CN111496675A - Transmission output shaft internal grinding clamp - Google Patents
Transmission output shaft internal grinding clamp Download PDFInfo
- Publication number
- CN111496675A CN111496675A CN202010364416.7A CN202010364416A CN111496675A CN 111496675 A CN111496675 A CN 111496675A CN 202010364416 A CN202010364416 A CN 202010364416A CN 111496675 A CN111496675 A CN 111496675A
- Authority
- CN
- China
- Prior art keywords
- elastic expansion
- output shaft
- positioning hole
- expansion sleeve
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
An internal grinding clamp for a transmission output shaft relates to the technical field of machining, and adopts the technical scheme that the internal grinding clamp comprises a centering connecting disc, an elastic expansion sleeve and a pressing sleeve; the centering flange comprises a locking part and a base plate, and the locking part is provided with a conical main positioning hole with a large outer part and a small inner part; an auxiliary positioning hole is formed in the base plate and is coaxial with the main positioning hole; a hollow transition part is arranged between the chassis and the locking part; the elastic expansion sleeve is arranged in the main positioning hole, is provided with a conical outer surface and a cylindrical inner cavity, and can generate radial deformation and pressure after being axially extruded; the pressing sleeve comprises a pressing ring, a connecting portion is arranged on one side of the pressing ring, and the inner wall of the connecting portion is in threaded connection with the outer wall of the locking portion. The invention has high positioning accuracy and is slightly influenced by human factors; the clamping and positioning process is convenient and quick, and only the output shaft is required to penetrate into the clamp and the pressing sleeve is screwed down; the clamp is simple in structure and low in manufacturing cost.
Description
Technical Field
The invention relates to the technical field of machining, in particular to an internal grinding clamp for a transmission output shaft.
Background
The output shaft 4 is an important component of the transmission and has the functions of supporting transmission parts, realizing rotary motion and transmitting torque and power. When an inner hole of the output shaft 4 is machined, the outer circle is clamped and positioned by a three-jaw chuck in the traditional method, and the inner hole is machined after the taper outer circle is corrected. The play and the reaction force of the output shaft 4 are mainly born by the three-jaw chuck, and the contact area of the three-jaw chuck and the output shaft 4 is small, so that the end surface and the outer wall of the output shaft 4 are easily marked, and the output shaft 4 needs to be reprocessed.
The three-jaw chuck is generally of a manual type and a power type, the manual type is greatly influenced by human factors, the production efficiency is low, the power type needs additional hydraulic pressure, air pressure or electric power as a power source, the pipeline and line connection structure is complex, and the cost is high; the problem of unstable product quality caused by low positioning precision exists in both manual and power modes.
Disclosure of Invention
The invention provides an internal grinding clamp for an output shaft of a transmission, aiming at the problems that the precision of a traditional three-jaw chuck is not high and the output shaft is easily damaged when an inner hole of the output shaft is machined in the prior art.
The invention provides the following technical scheme: an internal grinding clamp for a transmission output shaft comprises a centering flange, an elastic expansion sleeve and a pressing sleeve; the centering flange comprises a locking part and a base plate, and the locking part is provided with a conical main positioning hole with a large outer part and a small inner part; an auxiliary positioning hole is formed in the base plate and is coaxial with the main positioning hole; a hollow transition part is arranged between the chassis and the locking part; the elastic expansion sleeve is arranged in the main positioning hole, is provided with a conical outer surface and a cylindrical inner cavity, and can generate radial deformation and pressure after being axially extruded; the pressing sleeve comprises a pressing ring, a connecting portion is arranged on one side of the pressing ring, and the inner wall of the connecting portion is in threaded connection with the outer wall of the locking portion.
As a specific implementation manner, a plurality of first tightening grooves and a plurality of second tightening grooves extending in the axial direction are uniformly arranged on the elastic expansion sleeve, the first tightening grooves and the second tightening grooves are arranged at intervals and have opposite opening directions, the open end of the first tightening groove is arranged at the first end of the elastic expansion sleeve, and the opening of the second tightening groove is arranged at the second end of the elastic expansion sleeve.
Preferably, the ends of the first tightening slot and the second tightening slot are provided with circular through holes extending along the radial direction of the elastic expansion sleeve.
Preferably, a plurality of anti-slip grooves are uniformly arranged on the outer side of the pressing sleeve.
The invention has the beneficial effects that: 1. the elastic expansion sleeve is extruded by the pressing sleeve, then moves along the axial direction, and simultaneously deforms in the radial direction under the limitation of the locking part, so that a gap between the locking part and the output shaft is filled, and a large enough friction force is generated on a joint surface formed between the elastic expansion sleeve and the output shaft to fix the output shaft; the elastic expansion sleeve has uniform deformation in the circumferential direction, high positioning accuracy and small influence of human factors. 2. The clamping and positioning process is convenient and fast, and only the output shaft is required to penetrate into the clamp and the pressing sleeve is screwed down. 3. The clamp is simple in structure and low in manufacturing cost.
Drawings
FIG. 1 is a three-dimensional schematic of one embodiment of the present invention.
Fig. 2 is a three-dimensional exploded view of one embodiment of the present invention.
Fig. 3 is a three-dimensional cross-sectional view of one embodiment of the present invention.
Fig. 4 is a three-dimensional schematic view of one embodiment of the elastic expansion sleeve of the present invention.
FIG. 5 is a cross-sectional view of one embodiment of the present invention.
FIG. 6 is a schematic diagram of the operation of one embodiment of the present invention.
Reference numerals: 1-centering flange, 11-locking part, 111-main positioning hole, 12-chassis, 121-auxiliary positioning hole, 13-transition part, 2-elastic expansion sleeve, 21-first tightening groove, 22-second tightening groove, 23-circular through hole, 3-pressing sleeve, 31-pressing ring, 32-connecting part, 33-anti-skidding groove and 4-output shaft.
Detailed Description
The embodiments of the present invention will be described in more detail with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments of the present invention after studying the specification. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an internal grinding clamp for a transmission output shaft as shown in figures 1, 2 and 3, which comprises a centering flange 1, an elastic expansion sleeve 2 and a pressing sleeve 3; the centering flange 1 comprises a locking part 11 and a chassis 12, wherein the locking part 11 is provided with a conical main positioning hole 111 with a large outer part and a small inner part; an auxiliary positioning hole 121 is formed in the chassis 12, and the auxiliary positioning hole 121 is coaxial with the main positioning hole 111; a hollow transition part 13 is arranged between the chassis 12 and the locking part 11; the elastic expansion sleeve 2 is arranged in the main positioning hole 111, is provided with a conical outer surface and a cylindrical inner cavity, and can be extruded to generate radial deformation and pressure; the pressing sleeve 3 comprises a pressing ring 31, a connecting portion 32 is arranged on one side of the pressing ring 31, and the inner wall of the connecting portion 32 is in threaded connection with the outer wall of the locking portion 11.
The centering receiving disc and the pressing sleeve can be made of hardened and tempered 40Cr steel subjected to high-frequency surface quenching, and are high in surface hardness and good in wear resistance.
As shown in fig. 6, the main positioning hole of the locking portion and the auxiliary positioning hole of the chassis are coaxial, so that the output shaft can penetrate out of the centering disk, the auxiliary positioning hole is in clearance fit with the auxiliary positioning portion of the output shaft, and the elastic expansion sleeve of the main positioning hole provides primary positioning and support for the output shaft when not acting.
The main positioning hole is a conical hole with a large outer part and a small inner part, and can be mutually extruded with the conical outer surface of the elastic expansion sleeve under the action of an external axial clamping force, so that the elastic expansion sleeve deforms in the radial direction.
The output shaft can follow the cylindrical inner chamber of the elastic expansion sleeve penetrates, the inner surface of the cylindrical inner chamber is the contact surface of the elastic expansion sleeve and the main positioning part of the output shaft, the contact area is large, the positioning accuracy is high, and better protection can be formed on the contact surface of the output shaft.
The inner diameter of the compression ring of the compression sleeve is smaller than the maximum diameter of the elastic expansion sleeve, so that the elastic expansion sleeve can be clamped by the compression ring, and a limiting effect is achieved; the connecting part is in threaded connection with the locking part, so that the pressing ring can move in the axial direction to provide axial clamping force for the elastic expansion sleeve.
When the centering device works, as shown in fig. 6, the output shaft can firstly penetrate into the pressing sleeve and the elastic expansion sleeve in sequence and finally penetrate out of the centering disc. Will press the cover to the chassis direction removes, drives the pressing ring and to the expanded cover of conical surface extrusion elasticity of main locating hole, and the elasticity expands the cover and produces radial deformation under the effect of axial clamping force, makes the conical part shrink of the expanded cover of elasticity to this eliminates the elasticity and expands the clearance between the main location portion of cover and output shaft, makes and forms interference fit between the two, and establish the specific pressure on the contact surface, interlock each other through frictional force, forms fixed structure and fixes a position the output shaft, and the precision is high.
As a specific embodiment, the elastic expansion sleeve 2 is uniformly provided with a plurality of first tightening grooves 21 and second tightening grooves 22 extending along the axial direction on the elastic expansion sleeve 2, the first tightening grooves 21 and the second tightening grooves 22 are arranged at intervals and have opposite opening directions, the open end of the first tightening groove 21 is disposed at the first end of the elastic expansion sleeve 2, and the opening of the second tightening groove 22 is disposed at the second end of the elastic expansion sleeve 2.
One embodiment of the elastic expansion sleeve is shown in fig. 4 and 5. The first tightening groove and the second tightening groove are through grooves penetrating through the side wall of the elastic expansion sleeve, are uniformly distributed on the side wall of the elastic expansion sleeve, are arranged at intervals and are opposite in direction, and therefore the deformation capacity and the uniformity of deformation of the elastic expansion sleeve in the circumferential direction can be improved, and the positioning accuracy is improved. The elastic expansion sleeve can be made of 65Mn spring steel.
Preferably, the ends of the first tightening slot 21 and the second tightening slot 22 are each provided with a circular through hole 23 extending in the radial direction of the elastic expansion sleeve 2.
The circular through hole enables the tail ends of the first tightening groove and the second tightening groove to be circular, and fatigue cracks caused by stress concentration when the elastic expansion sleeve deforms can be prevented.
Preferably, a plurality of anti-slip grooves 33 are uniformly arranged on the outer side of the pressing sleeve 3.
The pressing sleeve can be screwed or unscrewed by using a tool, such as a wrench, and the anti-slip groove can prevent relative rotation between the pressing sleeve and the tool.
The above is a description of one embodiment of the present invention in more detail and detail, but it should not be understood that the scope of the invention is limited thereby. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the spirit of the invention, which falls within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. The utility model provides a derailleur output shaft internal grinding anchor clamps which characterized in that: comprises a centering flange (1), an elastic expansion sleeve (2) and a pressing sleeve (3);
the centering flange (1) comprises a locking part (11) and a chassis (12), wherein the locking part (11) is provided with a conical main positioning hole (111) with a large outer part and a small inner part; an auxiliary positioning hole (121) is formed in the base plate (12), and the auxiliary positioning hole (121) is coaxial with the main positioning hole (111); a hollow transition part (13) is arranged between the chassis (12) and the locking part (11);
the elastic expansion sleeve (2) is arranged in the main positioning hole (111), is provided with a conical outer surface and a cylindrical inner cavity, and can generate radial deformation and pressure after being axially extruded;
the pressing sleeve (3) comprises a pressing ring (31), a connecting part (32) is arranged on one side of the pressing ring (31), and the inner wall of the connecting part (32) is in threaded connection with the outer wall of the locking part (11).
2. The transmission output shaft internal grinding clamp of claim 1, wherein: the elastic expansion sleeve (2) is uniformly provided with a plurality of first tightening grooves (21) and second tightening grooves (22) extending along the axial direction, the first tightening grooves (21) and the second tightening grooves (22) are arranged at intervals and have opposite opening directions, the open end of the first tightening groove (21) is arranged at the first end of the elastic expansion sleeve (2), and the opening of the second tightening groove (22) is arranged at the second end of the elastic expansion sleeve (2).
3. The transmission output shaft internal grinding clamp of claim 2, wherein: the tail ends of the first tightening groove (21) and the second tightening groove (22) are respectively provided with a circular through hole (23) extending along the radial direction of the elastic expansion sleeve (2).
4. The transmission output shaft internal grinding clamp of claim 1, wherein: a plurality of anti-skid grooves (33) are uniformly arranged on the outer side of the pressing sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010364416.7A CN111496675A (en) | 2020-04-30 | 2020-04-30 | Transmission output shaft internal grinding clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010364416.7A CN111496675A (en) | 2020-04-30 | 2020-04-30 | Transmission output shaft internal grinding clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111496675A true CN111496675A (en) | 2020-08-07 |
Family
ID=71876653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010364416.7A Pending CN111496675A (en) | 2020-04-30 | 2020-04-30 | Transmission output shaft internal grinding clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111496675A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746265A (en) * | 2021-08-09 | 2021-12-03 | 中国科学院上海光学精密机械研究所 | Motor shaft-holding mechanism |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427902A (en) * | 2009-05-20 | 2012-04-25 | 比谷阿尔法股份有限公司 | Chuck Device |
| JP2013129011A (en) * | 2011-12-21 | 2013-07-04 | Toshiba Mach Co Ltd | Tool holder |
| CN204262779U (en) * | 2014-11-07 | 2015-04-15 | 重庆市綦江区自力汽配有限公司 | Shaft forgings drill jig positioning tool |
| DE102013111674A1 (en) * | 2013-10-23 | 2015-04-23 | Esa Eppinger Gmbh | Tool or piece clamping device with a collet |
| CN204431049U (en) * | 2015-02-17 | 2015-07-01 | 哈尔滨汽轮机厂有限责任公司 | A kind of ball headed measuring rod clamp |
| CN105127463A (en) * | 2015-08-27 | 2015-12-09 | 宁波川景誉机械科技发展有限公司 | Shank structure for cutter clamping |
| CN210359337U (en) * | 2019-07-18 | 2020-04-21 | 东莞市捷亚刀具有限公司 | Spring chuck type dustproof knife handle |
-
2020
- 2020-04-30 CN CN202010364416.7A patent/CN111496675A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102427902A (en) * | 2009-05-20 | 2012-04-25 | 比谷阿尔法股份有限公司 | Chuck Device |
| JP2013129011A (en) * | 2011-12-21 | 2013-07-04 | Toshiba Mach Co Ltd | Tool holder |
| DE102013111674A1 (en) * | 2013-10-23 | 2015-04-23 | Esa Eppinger Gmbh | Tool or piece clamping device with a collet |
| CN204262779U (en) * | 2014-11-07 | 2015-04-15 | 重庆市綦江区自力汽配有限公司 | Shaft forgings drill jig positioning tool |
| CN204431049U (en) * | 2015-02-17 | 2015-07-01 | 哈尔滨汽轮机厂有限责任公司 | A kind of ball headed measuring rod clamp |
| CN105127463A (en) * | 2015-08-27 | 2015-12-09 | 宁波川景誉机械科技发展有限公司 | Shank structure for cutter clamping |
| CN210359337U (en) * | 2019-07-18 | 2020-04-21 | 东莞市捷亚刀具有限公司 | Spring chuck type dustproof knife handle |
Non-Patent Citations (1)
| Title |
|---|
| 王春福: "《机床家具上设计手册》", 31 August 2002, 上海科学技术出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746265A (en) * | 2021-08-09 | 2021-12-03 | 中国科学院上海光学精密机械研究所 | Motor shaft-holding mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105014112A (en) | Outer circle turning clamp for thin-walled parts for motor | |
| CN112719976A (en) | Thin-wall part turning clamping device | |
| CN110640521A (en) | Automatic clamp for positioning and pressing end face of thin-wall sleeve in outer surrounding mode | |
| CN111496675A (en) | Transmission output shaft internal grinding clamp | |
| CN215510003U (en) | Self-centering tool for machining center hole in end face of shaft head | |
| CN102922449A (en) | Cylindrical face fast clamping device | |
| CN108838417B (en) | Clamp for machining shaft sleeve parts | |
| CN212822770U (en) | Hydraulic chuck for machine tool | |
| CN110977515B (en) | Elastic disc type expansion shaft | |
| CN202088012U (en) | Mechanical clamping spring collet for holes | |
| CN211072756U (en) | Centering combined clamping device in long cylinder | |
| CN219310115U (en) | Multi-cylinder hydraulic knife handle | |
| CN208132016U (en) | Thin-wall sleeve swelling device | |
| CN211387715U (en) | Petal type product machining clamp | |
| CN212857808U (en) | Backing bearing internal expanding tool | |
| CN210937212U (en) | Clamping mechanism for turning outer circle of hollow slender pipe fitting | |
| CN210819066U (en) | Roller surface grinding clamp | |
| CN220030793U (en) | Manual expansion type clamp | |
| CN216371200U (en) | High-precision steel ball lever clamp structure | |
| CN220680133U (en) | Rotating shaft enclasping body | |
| CN221582765U (en) | Combined turning clamp for irregular revolving body thin-wall workpiece | |
| CN221516137U (en) | General internal expanding tool | |
| CN215659930U (en) | Fixed frock with inflation cover | |
| CN220161888U (en) | Shaft body clamping device | |
| CN104384544A (en) | Centering fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200807 |