CN114986365A - Bearing piece machining line for automatic motor assembly - Google Patents
Bearing piece machining line for automatic motor assembly Download PDFInfo
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- CN114986365A CN114986365A CN202210602569.XA CN202210602569A CN114986365A CN 114986365 A CN114986365 A CN 114986365A CN 202210602569 A CN202210602569 A CN 202210602569A CN 114986365 A CN114986365 A CN 114986365A
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- fine grinding
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- 238000003754 machining Methods 0.000 title claims description 9
- 238000005498 polishing Methods 0.000 claims abstract description 319
- 238000004140 cleaning Methods 0.000 claims abstract description 87
- 238000012546 transfer Methods 0.000 claims abstract description 38
- 238000012545 processing Methods 0.000 claims abstract description 33
- 230000005347 demagnetization Effects 0.000 claims abstract description 19
- 238000004018 waxing Methods 0.000 claims description 74
- 238000003825 pressing Methods 0.000 claims description 51
- 239000007921 spray Substances 0.000 claims description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 13
- 239000004809 Teflon Substances 0.000 claims description 9
- 229920006362 Teflon® Polymers 0.000 claims description 9
- 210000000078 claw Anatomy 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 1
- 238000007670 refining Methods 0.000 description 31
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000007517 polishing process Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
- B24B29/04—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for rotationally symmetrical workpieces, e.g. ball-, cylinder- or cone-shaped workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0023—Other grinding machines or devices grinding machines with a plurality of working posts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0069—Other grinding machines or devices with means for feeding the work-pieces to the grinding tool, e.g. turntables, transfer means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/005—Feeding or manipulating devices specially adapted to grinding machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
- B24B5/06—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces internally
- B24B5/10—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces internally involving a horizontal tool spindle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B57/00—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents
- B24B57/02—Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents for feeding of fluid, sprayed, pulverised, or liquefied grinding, polishing or lapping agents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The invention relates to the technical field of automatic assembly of motors, in particular to a bearing piece processing line for automatic assembly of a motor, which comprises a conveying line, a transfer device, a fine grinding device, a first polishing device, a second polishing device, a cleaning device and a demagnetizing device, wherein a fine grinding station, a first polishing station, a second polishing station, a cleaning station and a demagnetizing station are sequentially arranged on the conveying line; the transfer device is used for grabbing the bearing piece to transfer on the conveying line; the fine grinding device is towards the fine grinding station, the first burnishing device is towards the first polishing station, the second burnishing device is towards the second polishing station, cleaning device is including setting up the clean shower nozzle in transfer chain both sides, and the demagnetization device is located the demagnetization box of rack including the rack that is used for placing the bearing spare and cover. The invention sequentially carries out fine grinding of the inner diameter, polishing of the outer diameter, cleaning and demagnetization, and is more convenient in subsequent automatic assembly.
Description
Technical Field
The invention relates to the technical field of automatic motor assembly, in particular to a bearing piece processing line for automatic motor assembly.
Background
At present, with the continuous development of motor technology, the direct drive motor is more and more widely applied. The direct drive motor can output power according to the motion parameters required by the equipment under the control of the system, including position accuracy, rotation speed, acceleration, torque and the like, so that all transmission parts from the motor to the final output shaft are omitted after the equipment is provided with the motor, the structure is simplified to the maximum extent, and the performance is improved.
In the aspect of a motor structure, the motor structure comprises a bearing piece, a stator component and a rotor component, wherein the bearing piece is required to be assembled on the stator component in the assembling process of an outer rotor motor; the existing assembly process is manually assembled, the assembly efficiency is low, and the precision is difficult to master; the bearing piece needs to be accurately ground, polished and demagnetized before being assembled, the existing machining process is manually and gradually machined, the production efficiency is low, and the subsequent automatic assembly efficiency is greatly influenced.
Disclosure of Invention
In order to solve the problems, the invention provides a bearing piece processing line for automatic assembly of a motor, which is more convenient in subsequent automatic assembly by sequentially carrying out fine grinding of inner diameter, inner diameter polishing, outer diameter polishing, cleaning and demagnetization.
The technical scheme adopted by the invention is as follows: a bearing piece processing line for automatic motor assembly comprises a conveying line, a transfer device, a fine grinding device, a first polishing device, a second polishing device, a cleaning device and a demagnetizing device, wherein a fine grinding station, a first polishing station, a second polishing station, a cleaning station and a demagnetizing station are sequentially arranged on the conveying line; the transfer device is used for grabbing the bearing piece to transfer on the conveying line; the fine grinding device faces the fine grinding station and is used for carrying out inner diameter fine grinding on the bearing piece on the fine grinding station; the first polishing device faces a first polishing station and comprises a propelling component, an inner diameter polishing driving component arranged on the propelling component, an inner diameter polishing shaft connected with the inner diameter polishing driving component and an inner diameter polishing waxing element positioned on one side of the inner diameter polishing shaft; the inner diameter polishing shaft is provided with an inner diameter polishing head, the inner diameter polishing and waxing element is used for waxing the inner diameter polishing head, and the inner diameter polishing head faces to the inner diameter polishing fixing position; the second polishing device faces a second polishing station and comprises a polishing support frame, a polishing lifting assembly arranged on the polishing support frame, an outer diameter polishing driving assembly connected to the polishing lifting assembly and an outer diameter polishing wheel connected to the outer diameter polishing driving assembly; the outer diameter polishing wheel is characterized in that a protective cover is arranged outside the outer diameter polishing wheel, an outer diameter polishing and waxing element is mounted on the protective cover, and the outer diameter polishing and waxing element is used for waxing the outer diameter polishing wheel; the cleaning device comprises cleaning spray heads arranged on two sides of the conveying line, and the cleaning spray heads are used for cleaning the polished bearing piece; therefore, the demagnetizing device comprises a placing frame for placing the bearing piece and a demagnetizing box body covered on the placing frame, and demagnetizers are arranged on two sides of the demagnetizing box body corresponding to the placing frame.
The further improvement of the scheme is that the conveying line comprises two opposite side plates, a conveying groove is formed between the two side plates, and the fine grinding station, the first polishing station, the second polishing station, the cleaning station and the demagnetizing station are sequentially arranged on the conveying groove.
The further improvement to the above scheme is that the accurate grinding station comprises two accurate grinding limiting rollers erected on the conveying groove, an accurate grinding position used for limiting the bearing piece is formed between the two accurate grinding limiting rollers, an accurate grinding pressing cylinder is arranged above the accurate grinding position, an accurate grinding pressing plate is arranged towards the accurate grinding position and used for pressing the bearing piece at the accurate grinding position, and the accurate grinding pressing plate is formed by processing a Teflon material.
The further improvement of the scheme is that the cleaning station comprises two cleaning limiting rollers erected on the conveying groove, a cleaning position used for limiting the bearing piece is formed between the two cleaning limiting rollers, a cleaning pressing cylinder is arranged above the cleaning position, a cleaning pressing plate is arranged on the cleaning pressing cylinder and faces the cleaning position, the cleaning pressing plate is used for pressing the bearing piece at the cleaning position, and the cleaning pressing plate is formed by machining a teflon material.
The further improvement of the scheme is that the first polishing station comprises two first limiting rollers erected between two side plates, a fixing position used for fixing a bearing piece is formed between the two first limiting rollers, a pressing cylinder is arranged above the fixing position, the pressing cylinder is connected with a fixing pressing plate towards the fixing position in a driving mode, and the fixing pressing plate is formed by processing teflon.
The further improvement of the scheme is that the second polishing station comprises two second limiting rollers which are rotatably erected between two side plates, a placing position used for placing the bearing piece is formed between the two second limiting rollers, two sides of the placing position are respectively provided with two sets of positioning elements which are oppositely arranged and used for positioning the bearing piece, each positioning element comprises a positioning cylinder and a positioning rod connected to the positioning cylinder, and the positioning rods are rotatably connected to the positioning cylinder.
The further improvement of the scheme is that the second limit roller is connected with a rotary driving shaft, the rotary driving shaft is connected with a linkage element, the linkage element is connected with a rotary driving motor, and the second limit roller is driven to enable the bearing piece to rotate on the placement position under the driving action of the rotary driving motor.
The further improvement of the scheme is that the fine grinding device comprises a fine grinding moving assembly, a fine grinding driving assembly connected to the fine grinding moving assembly and a fine grinding connecting chuck connected to the fine grinding driving assembly, wherein the fine grinding connecting chuck is provided with a fine grinding head, and the fine grinding head is used for the inner diameter fine grinding of the bearing piece.
The further improvement to above-mentioned scheme does, transfer the device and transfer the module including the straight line, install and transfer the module and follow the straight line and transfer the subassembly that snatchs that the module removed at the straight line, it includes first jacking cylinder, the second jacking cylinder of being connected with first jacking cylinder, connect in snatching the gas claw of second jacking cylinder and connect in the clamping jaw that snatchs the gas claw, the clamping jaw is used for snatching bearing spare.
The technical scheme is further improved in that the propelling assembly comprises a propelling cylinder, a propelling slide rail and a propelling slide block, the propelling cylinder drives the propelling slide block to slide along the propelling slide rail, the inner diameter polishing driving assembly is installed on the propelling slide block, the inner diameter polishing driving assembly comprises an inner diameter polishing motor and a rotating shaft sleeve connected with the inner diameter polishing motor, a fixed disc is arranged on the outer diameter of the rotating shaft sleeve, and a water inlet is formed in the fixed disc; the inner diameter polishing shaft is provided with a water through hole, the water through hole communicates the water inlet with the inner diameter polishing head, and the inner diameter polishing head is a fiber polishing head or a mesh cloth polishing head capable of permeating water.
The inner diameter polishing and waxing element comprises an inner diameter waxing driving element and an inner diameter waxing plate connected to the inner diameter waxing driving element, and the inner diameter waxing driving element drives the inner diameter waxing plate to move towards the inner diameter polishing head.
The further improvement to above-mentioned scheme does, the polishing support frame includes the under bracing frame and is located the last backup pad of under bracing frame top, go up and install jacking drive element on the backup pad, jacking drive element is connected with the jacking link, the jacking link is connected with the under bracing frame, polishing lifting unit includes lift driving motor and connects in lift driving motor's lifting screw, lifting screw connects in the protection casing.
The further improvement to above-mentioned scheme does, outer diameter polishing motor is installed to the under bracing frame, outer diameter polishing motor is connected with outer diameter polishing wheel, outer diameter polishing wheel is equipped with the rotation axis, rotation axis one end is equipped with the interface of intaking, the guide hole has been seted up to the external diameter of rotation axis, the guide hole intercommunication the interface of intaking, outer diameter polishing waxing component includes outer diameter waxing driving element and connects in outer diameter waxing driving element's outer diameter waxing board, outer diameter waxing driving element drives outer diameter waxing board and removes towards outer diameter polishing wheel.
The further improvement of the scheme is that the cleaning spray head comprises an outer diameter spray head and an inner diameter spray head, and the outer diameter spray head and the inner diameter spray head are respectively provided with a plurality of spray heads and face the cleaning station.
The further improvement to above-mentioned scheme does, the rack is installed at the demagnetization station, the standing groove that is used for placing the bearing spare has on the rack, the demagnetizer includes side direction demagnetization module and surface demagnetization module, the surface demagnetization module is connected with and pushes down drive element, the surface demagnetization module corresponds the demagnetization station and is equipped with the cushion.
The invention has the beneficial effects that:
compared with the existing automatic motor assembly, the automatic bearing assembly machine is used for automatically processing bearing pieces, and is more convenient for subsequent automatic assembly by sequentially performing fine grinding of inner diameter, inner diameter polishing, outer diameter polishing, cleaning and demagnetization, so that the problem of low processing efficiency of manual operation processing and polishing and demagnetization in the prior art is solved, full-automatic transfer processing is realized, the structure precision is high, the structure is reliable, and the practicability is high. The polishing device comprises a conveying line, a transfer device, a fine grinding device, a first polishing device, a second polishing device, a cleaning device and a demagnetizing device, wherein a fine grinding station, a first polishing station, a second polishing station, a cleaning station and a demagnetizing station are sequentially arranged on the conveying line; the transfer device is used for grabbing the bearing piece to transfer on the conveying line; the fine grinding device faces the fine grinding station and is used for carrying out inner diameter fine grinding on the bearing piece on the fine grinding station; the first polishing device faces a first polishing station and comprises a propelling component, an inner diameter polishing driving component arranged on the propelling component, an inner diameter polishing shaft connected with the inner diameter polishing driving component and an inner diameter polishing waxing element positioned on one side of the inner diameter polishing shaft; the inner diameter polishing shaft is provided with an inner diameter polishing head, the inner diameter polishing and waxing element is used for waxing the inner diameter polishing head, and the inner diameter polishing head faces to the inner diameter polishing fixing position; the second polishing device faces a second polishing station and comprises a polishing support frame, a polishing lifting assembly arranged on the polishing support frame, an outer diameter polishing driving assembly connected to the polishing lifting assembly and an outer diameter polishing wheel connected to the outer diameter polishing driving assembly; the outer diameter polishing wheel is characterized in that a protective cover is arranged outside the outer diameter polishing wheel, an outer diameter polishing and waxing element is mounted on the protective cover, and the outer diameter polishing and waxing element is used for waxing the outer diameter polishing wheel; the cleaning device comprises cleaning spray heads arranged at two sides of the conveying line, and the cleaning spray heads are used for cleaning the polished bearing piece; therefore, the demagnetizing device comprises a placing frame for placing the bearing piece and a demagnetizing box body covered on the placing frame, and demagnetizers are arranged on two sides of the demagnetizing box body corresponding to the placing frame. In the polishing process, the inner diameter and the outer diameter of the bearing piece are polished in sequence, so that the bearing piece is more convenient to assemble after polishing, and the polishing structure is combined with a waxing element and can be used for polishing a polishing head or a polishing wheel after waxing, so that the abrasion of the polishing head or the polishing wheel is reduced, and the polishing effect can be effectively improved; the problem of traditional polishing wheel or rubbing head life weak point is solved, polishing effect is poor. Still set up transfer chain and transfer device, under corresponding cooperation, be applicable to the full-automatic assembly line of motor, can accomplish the polishing of the internal diameter and the external diameter of bearing spare at the process of transferring, and then guaranteed follow-up equipment convenience, overall structure is reliable.
Drawings
FIG. 1 is a perspective view of a processing line of a bearing member for automatic assembly of a motor according to the present invention;
FIG. 2 is a perspective view of the bearing member processing line for automatic assembly of the motor shown in FIG. 1 from another perspective;
fig. 3 is a perspective view of a conveyor line of the bearing member processing line for automatic assembly of the motor in fig. 1;
fig. 4 is a perspective view of a first polishing apparatus and a first polishing apparatus of a processing line of a bearing member for automatic assembly of a motor in fig. 1;
FIG. 5 is a schematic perspective view of the first polishing apparatus of FIG. 4;
FIG. 6 is a perspective view of the first polishing apparatus of FIG. 4 from another perspective;
FIG. 7 is a schematic perspective view of the second polishing apparatus of FIG. 4;
FIG. 8 is a schematic view showing the construction of a rotary shaft of the second polishing apparatus of FIG. 7;
FIG. 9 is a schematic diagram of an outer diameter polishing wheel of the second polishing apparatus of FIG. 7;
fig. 10 is a perspective view of a demagnetizing device of a machining line for a bearing member for automatic assembly of the motor in fig. 1.
Description of reference numerals: the polishing device comprises a conveying line 1, a fine grinding station 11, a fine grinding limit roller 111, a fine grinding pressing cylinder 112, a fine grinding pressing plate 113, a first polishing station 12, a first limit roller 121, a pressing cylinder 122, a fixed pressing plate 123, a second polishing station 13, a second limit roller 131, a positioning element 132, a positioning cylinder 132a, a positioning rod 132b, a rotating driving shaft 133, a linkage element 134 and a rotating driving motor 135; a cleaning station 14, a cleaning limit roller 141, a cleaning pressing cylinder 142, a cleaning pressing plate 143, a demagnetizing station 15 and a side plate 16;
the device comprises a transfer device 2, a linear transfer module 21, a grabbing component 22, a first jacking cylinder 221, a second jacking cylinder 222, a grabbing air claw 223 and a clamping claw 224;
the refining device 3, the refining moving assembly 31, the refining driving assembly 32, the refining connecting chuck 33 and the refining head 34;
the first polishing device 4, the propelling assembly 41, the propelling cylinder 411, the propelling slide rail 412, the propelling slide block 413, the inner diameter polishing driving assembly 42, the inner diameter polishing motor 421, the rotating shaft sleeve 422, the fixed disc 423, the water inlet 424, the inner diameter polishing shaft 43, the inner diameter polishing waxing element 44, the inner diameter waxing driving element 441, the inner diameter waxing plate 442 and the inner diameter polishing head 45;
the polishing device comprises a second polishing device 5, a polishing support frame 51, a lower support frame 511, an upper support plate 512, a jacking driving element 513, a jacking connecting frame 514, a polishing lifting assembly 52, a lifting driving motor 521, a lifting screw 522, an outer diameter polishing driving assembly 53, an outer diameter polishing motor 531, an outer diameter polishing wheel 54, a rotating shaft 541, a water inlet port 542, a protective cover 55, an outer diameter polishing waxing element 56, an outer diameter waxing driving element 561 and an outer diameter waxing plate 562;
a cleaning device 6, a cleaning spray head 61, an outer diameter spray head 611, an inner diameter spray head 612;
a demagnetizing device 7, a placing frame 71, a demagnetizing box 72, a demagnetizing device 73, a lateral demagnetizing module 731 and a surface demagnetizing module 732.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1 to 10, a bearing piece processing line for automatic motor assembly is provided with a conveying line 1, a transfer device 2, a fine grinding device 3, a first polishing device 4, a second polishing device 5, a cleaning device 6 and a degaussing device 7, wherein the conveying line 1 is sequentially provided with a fine grinding station 11, a first polishing station 12, a second polishing station 13, a cleaning station 14 and a degaussing station 15; the transfer device is used for grabbing the bearing piece to transfer on the conveying line 1; the refining device 3 faces the refining station 11, and the refining device 3 is used for carrying out inner diameter refining on a bearing piece on the refining station 11; the first polishing device 4 faces the first polishing station 12, and the first polishing device 4 comprises a pushing assembly 41, an inner diameter polishing driving assembly 42 mounted on the pushing assembly 41, an inner diameter polishing shaft 43 connected to the inner diameter polishing driving assembly 42, and an inner diameter polishing waxing element 44 positioned on one side of the inner diameter polishing shaft 43; the inner diameter polishing shaft 43 is provided with an inner diameter polishing head 45, the inner diameter polishing waxing element 44 is used for waxing the inner diameter polishing head 45, and the inner diameter polishing head 45 faces the first polishing station 12; the second polishing device 5 faces the second polishing station 13, and the second polishing device 5 comprises a polishing support frame 51, a polishing lifting assembly 52 mounted on the polishing support frame 51, an outer diameter polishing driving assembly 53 connected to the polishing lifting assembly 52, and an outer diameter polishing wheel 54 connected to the outer diameter polishing driving assembly 53; a protective cover 55 is arranged outside the outer diameter polishing wheel 54, an outer diameter polishing and waxing element 56 is mounted on the protective cover 55, and the outer diameter polishing and waxing element 56 is used for waxing the outer diameter polishing wheel 54; the cleaning device 6 comprises cleaning spray heads 61 arranged at two sides of the conveying line 1, and the cleaning spray heads 61 are used for cleaning polished bearing pieces; therefore, the demagnetizing device 7 comprises a placing frame 71 for placing the bearing member and a demagnetizing box 72 covering the placing frame 71, and demagnetizers 73 are disposed on two sides of the demagnetizing box 72 corresponding to the placing frame 71.
Referring to fig. 3, the conveying line 1 comprises two opposite side plates 16, a conveying groove is formed between the two side plates 16, the fine grinding station 11, the first polishing station 12, the second polishing station 13, the cleaning station 14 and the degaussing station 15 are sequentially arranged on the conveying groove, and the conveying groove of the conveying line 1 is formed by the opposite arrangement of the two side plates 16, so that the bearing piece can be conveniently transferred; the bearing piece is conveniently transferred to each station in proper order, and the processing is convenient.
The fine grinding station 11 comprises two fine grinding limiting rollers 111 erected on a conveying groove, a fine grinding position used for limiting a bearing piece is formed between the two fine grinding limiting rollers 111, a fine grinding pressing cylinder 112 is arranged above the fine grinding position, a fine grinding pressing plate 113 is arranged towards the fine grinding position by the fine grinding pressing cylinder 112, the fine grinding pressing plate 113 is used for pressing the bearing piece at the fine grinding position, and the fine grinding pressing plate 113 is formed by processing a Teflon material; the further improvement is that the cleaning station 14 comprises two cleaning limit rollers 141 erected on the conveying trough, a cleaning position for limiting the bearing piece is formed between the two cleaning limit rollers 141, a cleaning and pressing cylinder 142 is arranged above the cleaning position, a cleaning pressing plate 143 is arranged on the cleaning and pressing cylinder 142 towards the cleaning position, the cleaning pressing plate 143 is used for pressing the bearing piece at the cleaning position, and the cleaning pressing plate 143 is formed by machining a teflon material; two limiting rollers are used for limiting the position of the placing position formed, the placing position can be used for fixing a bearing piece, and a pressing cylinder is arranged to be matched with a pressing plate to tightly press and fix a product, so that the precision of fine grinding and cleaning is guaranteed.
The first polishing station 12 comprises two first limiting rollers 121 erected between the two side plates 16, a fixing position for fixing a bearing piece is formed between the two first limiting rollers 121, a pressing cylinder 122 is arranged above the fixing position, the pressing cylinder 122 is connected with a fixing pressure plate 123 towards the fixing position in a driving mode, and the fixing pressure plate 123 is formed by processing teflon; in the inner diameter polishing process, the bearing piece is fixed in a fixing position, the fixing air cylinder 122 drives the fixing pressure plate 123 to compress tightly after fixing, and then the inner diameter of the bearing piece is polished through the first polishing device 4.
The second polishing station 13 comprises two second limiting rollers 131 rotatably erected between the two side plates 16, a placing position for placing a bearing piece is formed between the two second limiting rollers 131, two sides of the placing position are respectively provided with two groups of positioning elements 132 which are oppositely arranged and used for positioning the bearing piece, each positioning element 132 comprises a positioning cylinder 132a and a positioning rod 132b connected to the positioning cylinder 132a, and the positioning rod 132b is rotatably connected to the positioning cylinder 132 a; in the outer diameter polishing process, the bearing piece is placed to the placing position and is positioned through the positioning element 132, and the outer diameter of the bearing piece is polished through the second polishing device 5 after the positioning.
The second limiting roller 131 is connected with a rotary driving shaft 133, the rotary driving shaft 133 is connected with a linkage element 134, the linkage element 134 is connected with a rotary driving motor 135, the rotary driving motor 135 drives the second limiting roller 131 to enable the bearing piece to rotate on the placing position under the driving action, the second rotating roller can be driven to rotate under the action of the rotary driving motor 135 in the polishing process, and the bearing piece is made to rotate along with the rotation during the rotation so that the second polishing device 5 can polish.
The refining device 3 comprises a refining moving assembly 31, a refining driving assembly 32 connected to the refining moving assembly 31, and a refining connecting chuck 33 connected to the refining driving assembly 32, wherein the refining connecting chuck 33 is provided with refining grinding heads 34, and the refining grinding heads 34 are used for refining the inner diameter of a bearing piece; the refining drive assembly 32 is driven by the refining movement assembly 31 to move towards the refining station 11, and the refining drive assembly 32 drives the refining stones 34 to rotate, and when rotating, the inner diameter of the bearing member is subjected to refining processing.
The transfer device 2 comprises a linear transfer module 21 and a grabbing component 22 which is arranged on the linear transfer module 21 and moves along with the linear transfer module 21, wherein the grabbing component 22 comprises a first jacking cylinder 221, a second jacking cylinder 222 connected with the first jacking cylinder 221, a grabbing air claw 223 connected with the second jacking cylinder 222 and a clamping jaw 224 connected with the grabbing air claw 223, and the clamping jaw 224 is used for grabbing a bearing piece; in the transferring process, the module 21 is transferred through straight lines to perform straight line movement, two jacking cylinders are matched in the grabbing process, and jacking at two ends can be realized, so that the module can be placed and grabbed at different positions.
Referring to fig. 4 to 6, the propelling assembly 41 includes a propelling cylinder 411, a propelling slide rail 412, and a propelling slide block 413, the propelling cylinder 411 drives the propelling slide block 413 to slide along the propelling slide rail 412, the inner diameter polishing driving assembly 42 is mounted on the propelling slide block 413, the inner diameter polishing driving assembly 42 includes an inner diameter polishing motor 421 and a rotating shaft sleeve 422 connected to the inner diameter polishing motor 421, a fixed disc 423 is disposed on an outer diameter of the rotating shaft sleeve 422, and the fixed disc 423 is provided with a water inlet 424; the inner diameter polishing shaft 43 is provided with a water through hole, the water through hole communicates the water inlet 424 with the inner diameter polishing head 45, and the inner diameter polishing head 45 is a water-permeable fiber polishing head or a mesh cloth polishing head; in operation, the inner diameter polishing driving assembly 42 is driven by the propelling assembly 41 to move towards the bearing member, so that the inner diameter of the bearing member can be polished. Under the action of the water through hole and the water inlet interface, the polishing head 45 with the inner diameter can be injected with liquid (such as polishing oil, antirust oil and the like), so that heating can be reduced, and the polishing effect is better when the polishing head is matched with polishing wax, and the effect is better when the polishing head is assembled subsequently.
The inner diameter polishing and waxing element 44 comprises an inner diameter waxing driving element 441 and an inner diameter waxing plate 442 connected to the inner diameter waxing driving element 441, wherein the inner diameter waxing driving element 441 drives the inner diameter waxing plate 442 to move towards the inner diameter polishing head 45; the inner diameter waxing plate 442 is attached with a wax sheet and can be used for polishing in cooperation with a polishing head.
Referring to fig. 7 to 9, the polishing support frame 51 includes a lower support frame 511 and an upper support plate 512 located above the lower support frame 511, the upper support plate 512 is provided with a jacking driving element 513, the jacking driving element 513 is connected with a jacking connecting frame 514, the jacking connecting frame 514 is connected with the lower support frame 511, the polishing lifting assembly 52 includes a lifting driving motor 521 and a lifting screw 522 connected to the lifting driving motor 521, and the lifting screw 522 is connected to the protective cover 55; the lower support frame 511 and the upper support frame 512 are matched, and a jacking driving element 513 is arranged to drive the distance between the lower support frame 511 and the upper support frame 512, so that the distance between the outer diameter polishing wheel 54 and the bearing piece can be adjusted, the lifting driving motor 521 drives the lifting screw 522 to drive the protective cover 55 and the lower support frame 511 to move downwards and contact with the outer diameter of the bearing piece for polishing, and the lifting screw 522 is provided with a movable guide sleeve and is arranged on the lower support frame 511, so that the lifting screw can be movably connected to the lower support frame 511.
The lower support frame 511 is provided with an outer diameter polishing motor 531, the outer diameter polishing motor 531 is connected with the outer diameter polishing wheel 54, the outer diameter polishing wheel 54 is provided with a rotating shaft 541, one end of the rotating shaft 541 is provided with a water inlet port 542, the outer diameter of the rotating shaft 541 is provided with a guide hole, the guide hole is communicated with the water inlet port 542, the outer diameter polishing waxing element 56 comprises an outer diameter waxing driving element 561 and an outer diameter waxing plate 562 connected to the outer diameter waxing driving element 561, and the outer diameter waxing driving element 561 drives the outer diameter waxing plate 562 to move towards the outer diameter polishing wheel 54; the outer diameter polishing wheel 54 is driven to rotate to polish the outer diameter of the bearing piece through the outer diameter polishing motor 531 in the polishing process, meanwhile, the rotating shaft 541 can be used for guiding liquid (such as polishing oil, antirust oil and the like) through the water inlet port 542 and the guide hole, convenience of subsequent assembly is guaranteed, and meanwhile, the outer diameter waxing plate 562 is lowered through the air cylinder driving function in the waxing process and is used for waxing the outer diameter polishing wheel 54.
The cleaning spray head 61 comprises an outer diameter spray head 611 and an inner diameter spray head 612, the outer diameter spray head 611 and the inner diameter spray head 612 are respectively provided with a plurality of spray heads and face the cleaning station 14, the plurality of spray heads can be used for blowing air to clean the polished bearing piece, dust and the like remained on the bearing piece can be cleaned, and the subsequent assembly precision is ensured.
Referring to fig. 10, the placing frame 71 is installed at the demagnetizing station 15, a placing groove for placing a bearing piece is formed in the placing frame 71, the demagnetizer 73 includes a lateral demagnetizing module 731 and a surface demagnetizing module 732, the surface demagnetizing module 732 is connected with a pressing driving element, the surface demagnetizing module 732 is provided with a rubber pad corresponding to the demagnetizing station 15, and the lateral demagnetizing module 731 and the surface demagnetizing module 732 are used for demagnetizing the outer diameter surface and two side surfaces of the bearing piece, so that subsequent assembly is facilitated.
The automatic polishing machine is used for automatically processing bearing pieces, and is more convenient for subsequent automatic assembly, the problems of low processing efficiency of manual operation processing and polishing demagnetization are solved, full-automatic transfer processing is realized, the structural precision is high, the structure is reliable, and the practicability is high. Specifically, a conveying line 1, a transfer device 2, a fine grinding device 3, a first polishing device 4, a second polishing device 5, a cleaning device 6 and a demagnetizing device 7 are arranged, and a fine grinding station 11, a first polishing station 12, a second polishing station 13, a cleaning station 14 and a demagnetizing station 15 are sequentially arranged on the conveying line 1; the transfer device is used for grabbing the bearing piece to transfer on the conveying line 1; the refining device 3 faces the refining station 11, and the refining device 3 is used for carrying out inner diameter refining on the bearing piece on the refining station 11; the first polishing device 4 faces the first polishing station 12, and the first polishing device 4 comprises a pushing assembly 41, an inner diameter polishing driving assembly 42 mounted on the pushing assembly 41, an inner diameter polishing shaft 43 connected to the inner diameter polishing driving assembly 42, and an inner diameter polishing waxing element 44 positioned on one side of the inner diameter polishing shaft 43; the inner diameter polishing shaft 43 is provided with an inner diameter polishing head 45, the inner diameter polishing waxing element 44 is used for waxing the inner diameter polishing head 45, and the inner diameter polishing head 45 faces the first polishing station 12; the second polishing device 5 faces the second polishing station 13, and the second polishing device 5 comprises a polishing support frame 51, a polishing lifting assembly 52 arranged on the polishing support frame 51, an outer diameter polishing driving assembly 53 connected to the polishing lifting assembly 52, and an outer diameter polishing wheel 54 connected to the outer diameter polishing driving assembly 53; a protective cover 55 is arranged outside the outer diameter polishing wheel 54, an outer diameter polishing and waxing element 56 is mounted on the protective cover 55, and the outer diameter polishing and waxing element 56 is used for waxing the outer diameter polishing wheel 54; the cleaning device 6 comprises cleaning spray heads 61 arranged at two sides of the conveying line 1, and the cleaning spray heads 61 are used for cleaning polished bearing pieces; therefore, the demagnetizing device 7 comprises a placing frame 71 for placing the bearing member and a demagnetizing box 72 covering the placing frame 71, and demagnetizers 73 are disposed on two sides of the demagnetizing box 72 corresponding to the placing frame 71. In the polishing process, the inner diameter and the outer diameter of the bearing piece are polished in sequence, so that the bearing piece is more convenient to assemble after polishing, and the polishing structure is combined with a waxing element and can be used for polishing a polishing head or a polishing wheel after waxing, so that the abrasion of the polishing head or the polishing wheel is reduced, and the polishing effect can be effectively improved; the problem of traditional polishing wheel or rubbing head life weak point is solved, polishing effect is poor. Still set up transfer chain 1 and transfer device 2, under corresponding cooperation, be applicable to the full-automatic assembly line of motor, the polishing of the internal diameter and the external diameter of transferring the process and can accomplishing bearing spare, and then guaranteed follow-up equipment convenience, overall structure is reliable.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a motor is bearing spare processing line for automatic assembly which characterized in that: comprises that
The polishing device comprises a conveying line, a polishing device and a polishing device, wherein a fine grinding station, a first polishing station, a second polishing station, a cleaning station and a demagnetizing station are sequentially arranged on the conveying line;
the transfer device is used for grabbing the bearing piece to transfer on the conveying line;
the fine grinding device faces the fine grinding station and is used for carrying out inner diameter fine grinding on the bearing piece on the fine grinding station;
the first polishing device faces the first polishing station and comprises a propelling component, an inner diameter polishing driving component arranged on the propelling component, an inner diameter polishing shaft connected with the inner diameter polishing driving component and an inner diameter polishing waxing element positioned on one side of the inner diameter polishing shaft; the inner diameter polishing shaft is provided with an inner diameter polishing head, the inner diameter polishing and waxing element is used for waxing the inner diameter polishing head, and the inner diameter polishing head faces to the inner diameter polishing fixing position;
the second polishing device faces the second polishing station and comprises a polishing support frame, a polishing lifting assembly arranged on the polishing support frame, an outer diameter polishing driving assembly connected to the polishing lifting assembly and an outer diameter polishing wheel connected to the outer diameter polishing driving assembly; the outer diameter polishing wheel is characterized in that a protective cover is arranged outside the outer diameter polishing wheel, an outer diameter polishing and waxing element is mounted on the protective cover, and the outer diameter polishing and waxing element is used for waxing the outer diameter polishing wheel;
the cleaning device comprises cleaning spray heads arranged on two sides of the conveying line, and the cleaning spray heads are used for cleaning the polished bearing piece;
the demagnetizer comprises a placing frame for placing the bearing piece and a demagnetizing box body covering the placing frame, wherein demagnetizing devices are arranged on two sides of the demagnetizing box body corresponding to the placing frame.
2. The processing line of the bearing member for automatic assembly of a motor according to claim 1, wherein: the conveying line comprises two opposite side plates, a conveying groove is formed between the two side plates, and the fine grinding station, the first polishing station, the second polishing station, the cleaning station and the demagnetizing station are sequentially arranged on the conveying groove.
3. The bearing member processing line for automatic assembly of a motor according to claim 2, wherein: the fine grinding station comprises two fine grinding limiting rollers erected on the conveying groove, a fine grinding position used for limiting the bearing piece is formed between the two fine grinding limiting rollers, a fine grinding pressing cylinder is arranged above the fine grinding position, a fine grinding pressing plate is arranged on the fine grinding pressing cylinder and faces the fine grinding position, the fine grinding pressing plate is used for pressing the bearing piece to the fine grinding position, and the fine grinding pressing plate is formed by processing a Teflon material;
the cleaning station comprises two cleaning limiting rollers erected on the conveying groove, a cleaning position used for limiting the bearing piece is formed between the two cleaning limiting rollers, a cleaning compressing cylinder is arranged above the cleaning position, a cleaning pressing plate is arranged on the cleaning compressing cylinder and faces the cleaning position, the cleaning pressing plate is used for pressing the bearing piece on the cleaning position, and the cleaning pressing plate is formed by machining a teflon material.
4. The processing line of the bearing member for automatic assembly of a motor according to claim 3, wherein: the first polishing station comprises two first limiting rollers erected between two side plates, a fixing position for fixing a bearing piece is formed between the two first limiting rollers, a pressing cylinder is arranged above the fixing position, the pressing cylinder is connected with a fixing pressing plate towards the fixing position in a driving mode, and the fixing pressing plate is formed by processing Teflon;
the second polishing station comprises two second limiting rollers which are rotatably erected between the two side plates, a placing position for placing the bearing piece is formed between the two second limiting rollers, two sides of the placing position are respectively provided with two groups of positioning elements which are oppositely arranged and used for positioning the bearing piece, each positioning element comprises a positioning cylinder and a positioning rod connected with the positioning cylinder, and the positioning rods are rotatably connected with the positioning cylinders;
the second limiting roller is connected with a rotary driving shaft, the rotary driving shaft is connected with a linkage element, the linkage element is connected with a rotary driving motor, and the second limiting roller is driven to enable the bearing piece to rotate on the placement position under the driving action of the rotary driving motor.
5. The bearing member processing line for automatic assembly of a motor according to claim 1, wherein: the fine grinding device comprises a fine grinding moving assembly, a fine grinding driving assembly connected with the fine grinding moving assembly, and a fine grinding connecting chuck connected with the fine grinding driving assembly, wherein the fine grinding connecting chuck is provided with a fine grinding head, and the fine grinding head is used for fine grinding of the inner diameter of the bearing piece;
the transfer device comprises a linear transfer module, a grabbing assembly which is arranged on the linear transfer module and moves along the linear transfer module, the grabbing assembly comprises a first jacking cylinder, a second jacking cylinder connected with the first jacking cylinder, a grabbing gas claw connected to the second jacking cylinder, and a clamping jaw connected to the grabbing gas claw, and the clamping jaw is used for grabbing the bearing piece.
6. The bearing member processing line for automatic assembly of a motor according to claim 1, wherein: the inner diameter polishing driving assembly comprises an inner diameter polishing motor and a rotating shaft sleeve connected with the inner diameter polishing motor, a fixed disc is arranged on the outer diameter of the rotating shaft sleeve, and a water inlet is formed in the fixed disc; the inner diameter polishing shaft is provided with a water through hole, the water through hole communicates the water inlet with the inner diameter polishing head, and the inner diameter polishing head is a fiber polishing head or a mesh cloth polishing head capable of permeating water;
the inner diameter polishing and waxing element comprises an inner diameter waxing driving element and an inner diameter waxing plate connected to the inner diameter waxing driving element, and the inner diameter waxing driving element drives the inner diameter waxing plate to move towards the inner diameter polishing head.
7. The machining line for bearing members for automatic assembly of motors according to claim 6, characterized in that: the polishing support frame includes the under bracing frame and is located the last backup pad of under bracing frame top, upward install jacking drive element on the backup pad, jacking drive element is connected with the jacking link, the jacking link is connected with the under bracing frame, polishing lift assembly includes lift driving motor and connects in lift driving motor's lifting screw, lifting screw connects in the protection casing.
8. The machining line for bearing members for automatic assembly of motors according to claim 7, characterized in that: the utility model discloses a polishing machine for outer diameter, including bottom suspension strut, outer diameter polishing wheel, guide hole intercommunication, outer diameter polishing wax element, outer diameter polishing drive element, outer diameter polishing wheel, outer diameter polishing drive element, outer diameter polishing wax plate, outer diameter polishing wheel, outer diameter polishing motor, outer diameter polishing wheel, guide hole intercommunication, outer diameter polishing wheel, outer diameter polishing drive element, outer diameter polishing wheel, guide hole, outer diameter polishing wheel, outer diameter polishing wax plate, outer diameter polishing wheel, and outer diameter polishing wheel, and outer diameter polishing wheel, outer diameter, and outer diameter, outer diameter polishing wheel, outer diameter, and the drive element, outer diameter, and the drive element, and the outer diameter, and the wax, and the drive element, the outer diameter, the drive element, and the drive element, the outer diameter, and the outer diameter, the drive element, the outer diameter, the wax, the drive element, and the drive element, the outer diameter, the drive element, the wax, the drive element, the outer diameter, the wax, the.
9. The bearing member processing line for automatic assembly of a motor according to claim 1, wherein: the cleaning spray head comprises an outer diameter spray head and an inner diameter spray head, and the outer diameter spray head and the inner diameter spray head are respectively provided with a plurality of nozzles and face the cleaning station.
10. The bearing member processing line for automatic assembly of a motor according to claim 1, wherein: the rack is installed at the demagnetization station, the standing groove that is used for placing the bearing spare has on the rack, the demagnetizer includes side direction demagnetization module and surface demagnetization module, the surface demagnetization module is connected with and pushes down drive element, the surface demagnetization module corresponds the demagnetization station and is equipped with the cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210602569.XA CN114986365A (en) | 2022-05-30 | 2022-05-30 | Bearing piece machining line for automatic motor assembly |
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| CN202210602569.XA CN114986365A (en) | 2022-05-30 | 2022-05-30 | Bearing piece machining line for automatic motor assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117380597A (en) * | 2023-12-08 | 2024-01-12 | 常州市钧达轴承有限公司 | Cleaning device for inner ring and outer ring of bearing and working method of cleaning device |
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