CN108380987B - Tapping handle of a knife of little extending structure - Google Patents
Tapping handle of a knife of little extending structure Download PDFInfo
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- CN108380987B CN108380987B CN201810306219.2A CN201810306219A CN108380987B CN 108380987 B CN108380987 B CN 108380987B CN 201810306219 A CN201810306219 A CN 201810306219A CN 108380987 B CN108380987 B CN 108380987B
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 68
- 238000001816 cooling Methods 0.000 claims abstract description 31
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- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 13
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
- B23G1/46—Equipment or accessories specially designed for machines or devices for thread cutting for holding the threading tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention discloses a tapping knife handle with a micro-telescopic structure, which comprises a blind rivet structure, a knife handle body unit, a cooling core, a fixing sleeve, a core rod, an adjusting screw with a water through hole, an elastic chuck and a locking nut, and further comprises a radial strong torque transmission mechanism and a sealing structure. The automatic micro-compensation type knife handle has the advantages of high automation degree, automatic micro-compensation, good sealing, long service life and high reliability.
Description
Technical Field
The invention relates to the field of machining, in particular to a tapping cutter handle with a micro-telescopic structure for a numerical control machine tool.
Background
Along with the improvement of the mechanical automation level, the informatization coverage of the mechanical processing industry gradually improves the precision of processed products so as to ensure the quality and the quality of the products. The existing tapping tool handles, such as rigid tapping tool handles commonly used in the market, are difficult to ensure synchronous zero error of forward and reverse rotation of a tap under a pulse command of a numerical control system in the tapping process, so that phenomena of tooth thinness, tooth decay or undercut and the like are caused in tapping.
However, the prior tapping shank micro-compensation structure mainly comprises the following schemes.
Case 1, knife handle with axial float mechanism and sliding friction clutch mechanism
The tapping handle of a knife of this structure has satisfied the requirement of tap in the function, but to the small-diameter screw hole, the machining effect can not guarantee the precision requirement of tap. Because the screw tap has smaller torque in the process of processing the small-diameter screw hole, and the sliding friction clutch in the structure generates larger friction coefficient, the screw tap cannot sensitively sense the small torque, and overload protection for the small-diameter screw tap is formed; the handle has a single transmission structure, is relatively large in external environment and is easy to fail; on the other hand, the sealing element is not used on the connecting and matching surface of the cutter handle structural part, so that the tightness of the cutter handle overall structure is poor, the structural part is poor in rust prevention function due to the fact that the radial and deflection angle are not floating, the matching precision is low, the screw tap is fast in abrasion, the small screw tap is easy to break and is clamped in the threaded hole, and the precision requirement of the screw thread cannot be guaranteed. The scrapping of the processed product and the frequent replacement of the tap are caused at the same time, so that the production cost is greatly increased.
Case 2 tapping handle with rigid Structure
The structure of the handle is simple and unitary, and the tapping requirement is basically met in function, so that the tapping is ensured. In the whole tapping process, the main shaft unit is connected with the cutter handle, the cutter handle is connected with the chuck, the chuck clamps the screw tap, the numerical control system gives a command control in the whole process, but the numerical control system gives a signal to feed and retract the screw tap, so that the screw tap is converted from forward transmission to reverse rotation, the pulse signal keeps the original movement process due to short delay, the reverse rotation of the main shaft and the short forward transmission of the screw tap form reverse opposite movements, two different reverse forces are formed, the cutter handle pulls the screw tap when driving the screw tap to retract, the screw tap is incompletely attached to a tooth-shaped meshing surface during tapping, and the original tooth shape is damaged, so that the abrasion and damage to teeth are caused. At the same time, the tap edge accelerates passivation, tap wear and even fracture.
Case 3, employing elastic large displacement compensation structure
For the rigid tapping handle of a knife, this structure effectively protects the broken condition of screw tap appearance when attacking the tooth, however the handle of a knife when tapping the minor diameter screw hole, and the moment of torsion that produces is less, so this structure handle of a knife can't perception little moment of torsion, so overload protection can't obtain effective protection to easy cracked minor diameter screw tap. In a certain tapping range, the displayed defects are consistent with those of the rigid structure tapping cutter handle, and for the rigid tapping cutter handle, the manufacturing cost of the cutter handle is higher, and the assembly difficulty is higher. So the tap still wears fast, the small tap is easy to break, and the tapping precision is difficult to ensure.
In conclusion, the existing tapping shank has a single and simple structure, adopts a single protection measure for tapping, especially for small-diameter tapping, does not realize compensation buffering of threaded holes with any diameter, especially can not ensure engagement of the front and back sides of tooth forms for the small-diameter threaded holes, damages the tap, and cannot ensure thread precision, so that the tapping shank has a low service life and low precision of processed products.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the tapping cutter handle with a micro-telescopic structure, which can solve the problems of tooth pouring, tooth breaking and even cutter breaking caused by untimely compensation of a small-diameter tapping process.
The invention adopts the following technical scheme:
The utility model provides a tapping handle of a knife of micro-telescopic structure, tapping handle of a knife includes blind rivet structure, handle of a knife body unit, cooling core, fixed cover, plug, band-pass water vent's adjusting screw, chuck and lock nut, and blind rivet structure passes through the internal thread connection of external screw thread and handle of a knife body unit cavity to adopt circlip location.
The lower end of the cutter handle body unit is propped against the upper end head and the upper end face of the cooling core through the upper section of the stepped hole, the lower section of the cooling core with the hollow flow guide through hole is propped against the inner hole of the upper section of the fixed sleeve and inserted into the inner hole of the upper section of the core rod, and the adjusting screw with the water through hole is arranged in the inner hole of the lower section of the core rod and the large hole of the upper section is sleeved with the lower section of the cooling core.
The lower section of the core rod is a conical-like cavity, and an inverted conical tap clamping piece is arranged in the conical-like cavity; the upper section of the tap is inserted into a tap clamping piece in a lower section similar conical cavity of the core rod, and the tap is screwed down and fixed through the thread fit of the locking nut.
The knife handle structure also comprises an axial micro-compensation structure, a radial strong torque transmission mechanism and a sealing structure.
Further, the axial micro-compensation structure is a micro-telescopic spring arranged in a cavity between a large inner hole at the lower section of the fixed sleeve and the peripheral wall of the core rod, the initial quantity of the micro-telescopic spring can be supported and regulated by the following adjusting screw, and the torque generated by the inversion of the cutter handle body unit and the inertia of the screw tap can be counteracted by the extension compression quantity of the micro-telescopic spring.
Further, the radial strong torque transmission mechanism comprises a fixed sleeve which is abutted against the threaded connection surface of the cutter handle body unit, the fixed sleeve is fixedly connected with the micro-telescopic spring through a screw, and the axial relative position is kept unchanged, so that the micro-telescopic spring is abutted against the end surface of the fixed sleeve; the micro-telescopic spring and the core rod penetrate through the radial positioning pin, so that the core rod is driven to rotate when the micro-telescopic spring rotates; the clamping head is an elastic clamping head, and the clamping head is extruded through threads and clamps the tap.
Further, the sealing structure comprises an elastic damping element which is arranged in the contact surface of the cooling core and the core rod and forms an elastic barrier.
Further, the inside of tapping handle of a knife adopts central water-cooling seal structure, sets up central water-cooling pipeline in the axle center of tapping handle of a knife, and the coolant liquid through its inside transport is evacuated tapping handle of a knife during operation heat that produces.
Compared with the prior art, the invention has the beneficial effects that: therefore, the prior art of tapping tool handles in the industry is not enough, and new structural innovation is performed on the technical structure, so that the axial force transmission of the tapping tool handles is uniform during tapping, the synchronous error generated when the tapping tool handles instantly correct meshing threads or reverse rotation of a tap is avoided, the tap is prevented from being broken off during tapping, the service life of the tap is ensured, and the precision of processing the threaded hole is ensured. The structural uniformity of the axial force transmission and the compensating effect on the tap movement must therefore be ensured. The tool shank is connected with the spindle and is tapped under the working condition, and has high-load and high-sensitivity micro compensation (the axial compensation amount is +/-0.15 mm), and the tool shank clamps the tap and shows higher combination precision (the deflection precision after the tap is installed is ensured to be within 0.005 mm). The clearance deflection amount when the screw tap is tapped is reduced, the machining precision of threads is guaranteed, the tool shank body is connected with the blind rivet, the numerical control main shaft pulls the blind rivet, and the micro-compensation transmission clamping mechanism in the tool shank is connected with the tool shank through threads and is positioned by leaning against the end face of the tool shank. The combination precision of the numerical control main shaft, the cutter handle body and the micro compensation mechanism is ensured by the matching mode, the micro telescopic induction spring is arranged in the micro compensation mechanism, so that transient forward transmission of the tap due to delay of pulse signals when a numerical control system gives out instructions for forward and reverse rotation can be buffered, signal pulse errors generated when the tapping cutter handle is meshed or reversely rotated through tiny telescopic instantaneous correction are ensured, abrasion of the tap and threads in the tapping process is prevented, thereby improving the thread precision and the thread surface quality, avoiding the poor machining problems of thread thinness, thread abrasion and thread unevenness, and simultaneously, the process is still sensitive to small torque of a small-diameter threaded hole; and simultaneously, good sealing and cooling effects are achieved.
Drawings
FIG. 1 is a schematic view of a tapping shank of the micro-telescoping structure of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at A;
FIG. 3 is a cross-sectional view taken at F-F in FIG. 1;
FIG. 4 is an enlarged view at B in FIG. 1;
Fig. 5 is a cross-sectional view at E-E in fig. 1.
In the figure: 101. a blind rivet structure; 102. a shank body unit; 103. a cooling core; 104. a radial positioning pin; 105. positioning steel balls; 106. a fixed sleeve; 107. a micro-expansion spring; 108. a core rod; 109. an axial locating pin; 110. a locking screw; 111. an aluminum sleeve; 112. an elastic chuck; 113. a lock nut; 114. a tap; 115. tap water outlet hole; 116. an adjusting screw; 401. a central water-cooled conduit; 402. an O-ring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
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 herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-5, the tapping shank comprises a blind rivet structure 101, a shank body unit 102, a cooling core 103, a fixing sleeve 106, a core rod 108, an adjusting screw 116 with a water through hole, an elastic chuck 112 and a locking nut 113, wherein the blind rivet structure 101 is connected with an internal thread of an inner cavity of the shank body unit 102 through an external thread and is positioned by adopting an elastic retainer ring; the lower end of the cutter handle body unit 102 is propped against the upper end head and the upper end face of the cooling core 103 through the upper section of the stepped hole, the lower section of the cooling core 103 with a hollow diversion through hole is propped against the inner hole of the upper section of the fixed sleeve 106 and inserted into the inner hole of the upper section of the core rod 108, and the adjusting screw 116 with the water through hole is arranged in the inner hole of the lower section of the core rod 108 and the large hole of the upper section is sleeved with the lower section part of the cooling core 103; the lower section of the core rod 108 is a conical-like cavity, and an inverted conical tap clamping piece is arranged in the conical-like cavity; the upper section of the tap 114 is inserted into a tap holder in the lower section of the tapered cavity of the mandrel 108, and the tap 114 is screwed down and fixed by the locking nut 113 in a threaded fit; the knife handle structure also comprises an axial micro-telescopic structure, a radial strong torque transmission mechanism and a sealing structure.
Specific examples are described below:
1. Axial micro-compensation structure
The blind rivet structure 101 is connected with the tool shank body unit 102. The numerical control main shaft tightening and pulling nail structure 101 enables the conical surface of the cutter handle body unit 102 to be completely attached to the main shaft surface and complete positioning, the cutter handle body unit 102 is indirectly connected with the core rod 108 and clamps the ER16 elastic chuck 112, so that the tap 114 is clamped, and the whole process completely depends on the transmission of axial torque force to drive the tap 114 to rotate for tapping.
In this work, the inner cavity at the lower end of the tool shank body unit 102 is connected with the external thread at the lower end of the cooling core 103 through the internal thread, and penetrates into the tool shank body unit 102 and the fixing sleeve 106 through the axial positioning pin 109, so that the absolute property of the axial positions of the tool shank body unit 102 and the fixing sleeve 106 is ensured, and the mandrel 108 is extruded and the initial quantity of the micro-telescopic spring 107 is adjusted by adjusting the screw-in quantity of the adjusting screw 116, so that the micro-telescopic spring 107 senses more sensitively.
When the tap 114 is rotated for tapping, the numerical control system gives a depth, and after the tapping at the depth is completed, the numerical control system gives a signal that the tap 114 is reversed. During the period of pulse buffering, the micro-telescopic spring 107 counteracts the strong torque force generated by the reverse rotation of the cutter handle body unit 102 and the inertia of the screw tap 114 through a small extension compression amount, the cutter handle body unit 102 is connected with the screw tap 114 through the micro-telescopic spring 107 with flexible buffering, and thus the absolute rest of the inertial motion of the screw tap is ensured through the micro-compensation of the micro-telescopic spring 107.
Because the axial relative position of the connecting piece is fixed and cannot be polluted by water, dust, gas and the like, the spring can be axially stretched and contracted to keep an absolute smooth movement effect. Therefore, the micro-telescopic structure corrects the engagement of the screw tap 114 and the screw thread, compensates for the synchronous error generated when the numerical control main shaft is reversed, prolongs the service life of the screw tap 114, and ensures the processing precision of the screw thread.
2. Radial strong torque transmission mechanism
The tap 114 must require a strong torque for rotational tapping, and the deeper the tap depth, the greater the torque transfer resistance, so the shank body unit 102 is required to transfer torque to the tap 114 with minimal loss.
The handle body unit 102 passes through threaded connection fixed sleeve 106 to rely on the terminal surface to press close to handle body unit 102 terminal surface to guarantee the location, numerical control main shaft rotates and drives the handle of a knife and rotate, and rotate for fixed sleeve 106 with the moment of torsion transmission, fixed sleeve 106 passes through locking screw 110 fastening connection little telescopic spring 107, keeps axial relative position unchanged, little telescopic spring 107 is close with fixed sleeve 106 terminal surface laminating in addition, relies on the laminating of plane position, has avoided handle body unit 102 to take place radial float at rotatory in-process, little telescopic spring 107 passes through radial locating pin 104 with plug 108 and cooperates location steel ball 105 realization radial positioning.
The micro-telescopic spring 107 rotates and drives the core rod 108 to rotate, so that torque of the cutter handle body unit 102 is transmitted to the core rod 108.
The elastic chuck 112 has high elastic performance, and the elastic chuck 112 is extruded and clamped to the screw tap 114 through high-strength threads, so that the maximum friction force is ensured, and the numerical control main shaft can maximally transmit torque to the screw tap 114, so that the absolute value of the rotation position of the screw tap 114 is completed. The fixing sleeve 106 is in threaded connection with the tool shank body unit 102, so that the inner micro-telescopic structure body can be quickly detached and replaced under the condition that the tool shank body unit 102 is unchanged, and high positioning accuracy is still maintained.
3. Structural sealing function
The inner structural members of the cutter handle body unit 102 are matched and installed, and in order to prevent gaps exist between the aluminum sleeve 111 and the core rod 108 at the contact position, an O-shaped ring 402 is used at the surface contact position, so that the elastic barrier of the damping body is formed. Because of the natural elastic property of the O-shaped ring, the aluminum sleeve 111 and the core rod 108 are assembled to extrude the O-shaped ring, and the existing assembly gap is subjected to surface compensation to achieve sealing, so that the penetration of cutting fluid outside the cutter handle is effectively prevented. The elastic characteristic of the O-ring 402 can be adjusted along with the change of the gap between the mating contact surfaces of the aluminum sleeve 111 and the core rod 108 of the assembly structural member, so that the complete fitting of the assembly mating surfaces of the parts is achieved, and the complete sealing effect of the internal structure of the cutter handle is ensured.
4. Cooling structure
The inside of tapping handle of a knife adopts central water-cooling seal structure, sets up central water-cooling pipeline 401 at the axle center of tapping handle of a knife, and the coolant liquid that carries through its inside is evacuated the heat that the tapping handle of a knife during operation produced, and the coolant liquid is discharged and recycle from the tap apopore 115 that sets up near the end of central water-cooling pipeline 401.
The tap reaches the set depth when the conventional tapping handle is tapped, and due to the tolerance of machine control, the accumulated angle error of the main drilling unit, which is formed by the tapping handle and the tap clamped by the tapping handle, causes certain rotation error and axial error, so that the load of the tap is suddenly changed under the condition of torque surge generated when the forward and reverse rotating shafts of the tap move to feed, shearing or fracture phenomenon occurs, and the quality of the processed thread is uneven, and the processed thread is thin, rotten or undercut and the like. And a signal is given out to withdraw the thread from the control unit of the numerical control machine tool, so that a transient tapping process can be reserved due to the buffering effect of the tap. In the structure, a micro compensation mechanism, namely a micro telescopic spring 107, is connected with an elastic chuck 112 and is transmitted to a screw tap 114 until the reserved torque force is reduced; in addition, the interface of the tool shank is a BT series high-tightness tool shank, the tool shank is compact in structure and is connected to a static spindle or a spindle box through the cooperation of the blind rivet structure 101 and a broach system of a machine tool spindle, the machine tool spindle rotates to drive the tool shank to rotate, the tool shank body unit 102 is connected with the fixing sleeve 106, the micro-telescopic spring 107, the core rod 108 and the final clamping screw tap 114 are connected, the fixing sleeve 106 is connected with the tool shank body unit 102 through threads, the absolute performance of the positions of the tool shank body unit 102 and the fixing sleeve 106 is guaranteed by virtue of the end face and the axial positioning pin, the fixing sleeve 106 is connected with the micro-telescopic spring 107 through screws, the micro-telescopic spring 107 is tightly attached to the end face of the fixing sleeve 106 through the assembly positioning of the radial positioning pin 104, and the plane position attachment is relied on, so that the tool shank body unit 102 is prevented from radial movement in the rotating process, and the maximum value of torque transmission is guaranteed; the internal structure of the tool handle adopts a central water-cooling sealing structure, the central water-cooling pipeline 401 conveys cooling liquid to ensure heat generated when the tool handle rotates, the tool handle body unit 102 and the cooling core 103 are assembled, so that the O-shaped ring 402 is arranged at the assembling surface to avoid exudation of the cooling liquid, the O-shaped ring has an elastic damping blocking effect due to the natural elastic property, and the interference extrusion of the O-shaped ring when the tool handle body unit 102 presses the cooling core 103 is ensured, so that the cooling liquid cannot enter. The tapping precision is guaranteed from the structural design function, the tap and the thread are prevented from malfunctioning, and the service life of the tap is prolonged.
Compared with a conventional cutter handle, the micro-compensation cutter handle has the advantages that synchronous errors generated during tooth engagement and tooth withdrawal reversal are corrected by small expansion and contraction of +/-0.15 mm under tapping, the micro-compensation cutter handle has high dynamic balance performance, the abrasion of a screw tap is strongly protected, the tapping accuracy is high, the automation degree of the cutter handle is high, the service life is long, the reliability is high, the high-accuracy tapping effect of the machining industry is directly improved, and the upgrading of the machining industry is promoted.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a tapping handle of a knife of micro-telescopic structure, tapping handle of a knife top-down sets up blind rivet structure, handle of a knife body unit, cooling core, fixed cover, plug, band-pass water vent's adjusting screw, chuck and lock nut, its characterized in that:
the tapping knife handle also comprises an axial micro-compensation structure, a radial strong torque transmission mechanism and a sealing structure;
The axial micro-compensation structure comprises a spring arranged in a cavity between a large inner hole at the lower section of the fixed sleeve and the peripheral wall of the core rod;
The radial strong torque transmission mechanism comprises a fixed sleeve which is abutted against the threaded connection surface of the cutter handle body unit, the fixed sleeve is fixedly connected with the spring through a locking screw, and the axial relative position is kept unchanged, so that the spring is abutted against the end surface of the fixed sleeve; the spring and the core rod penetrate through the radial positioning pin, so that the core rod is driven to rotate when the spring rotates; the clamping head is an elastic clamping head, and the clamping head is extruded through threads and clamps the tap;
The sealing structure comprises an elastic damping piece which is arranged in the contact surface of the cooling core and the core rod and forms elastic barrier;
The spring of the axial micro-compensation structure is a micro-telescopic spring, the axial locating pin penetrates into the cutter handle body unit and the fixed sleeve to axially locate, the initial quantity of the micro-telescopic spring is supported and regulated by the adjusting screw, and the stretching compression quantity of the micro-telescopic spring counteracts torque generated by reverse rotation of the cutter handle body unit and screw tap inertia.
2. The micro-telescoping tapping shank according to claim 1, wherein: the blind rivet structure is connected with the internal thread of the inner cavity of the cutter handle body unit through the external thread and is positioned by adopting the elastic retainer ring.
3. The micro-telescoping tapping shank according to claim 1, wherein: the lower end of the cutter handle body unit is propped against the upper end head and the upper end face of the cooling core through the upper section of the stepped hole, the lower section of the cooling core with the hollow flow guide through hole is propped against the inner hole of the upper section of the fixed sleeve and inserted into the inner hole of the upper section of the core rod, and the adjusting screw with the water through hole is arranged in the inner hole of the lower section of the core rod and is sleeved with the lower section part of the cooling core in the large hole of the upper section.
4. The micro-telescoping tapping shank according to claim 1, wherein: the lower section of the core rod is a conical-like cavity, and an inverted conical tap clamping piece is arranged in the conical-like cavity; the upper section of the tap is inserted into a tap clamping piece in a lower section similar conical cavity of the core rod, and the tap is screwed down and fixed through the thread fit of the locking nut.
5. The micro-telescoping tapping shank according to claim 1, wherein: the sealing structure also comprises an elastic damping piece arranged between the cutter handle body unit and the cooling core and between the fixing sleeve and the cutter handle body unit.
6. The micro-telescoping tapping shank according to claim 5, wherein: the elastic damping piece is an O-shaped ring.
7. The micro-telescoping tapping shank according to claim 1, wherein: the inside of tapping handle of a knife adopts central water-cooling seal structure the axle center of tapping handle of a knife sets up central water-cooling pipeline, and the coolant liquid through its inside transport is evacuated tapping handle of a knife during operation heat that produces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306219.2A CN108380987B (en) | 2018-04-08 | 2018-04-08 | Tapping handle of a knife of little extending structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810306219.2A CN108380987B (en) | 2018-04-08 | 2018-04-08 | Tapping handle of a knife of little extending structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108380987A CN108380987A (en) | 2018-08-10 |
| CN108380987B true CN108380987B (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810306219.2A Active CN108380987B (en) | 2018-04-08 | 2018-04-08 | Tapping handle of a knife of little extending structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465505B (en) * | 2018-12-30 | 2023-09-22 | 广西玉柴机器股份有限公司 | Safe broken-wire-preventing cone chuck |
| US11090746B2 (en) * | 2019-04-24 | 2021-08-17 | Hong Ann Tool Industries Co., Ltd. | Rotary cutter for cutting damaged threads of a bolt |
| CN111673514B (en) * | 2020-05-14 | 2022-06-14 | 山东宝骅精工科技有限公司 | Anti-breaking rivet and connection mode with handle of a knife |
| CN112222523B (en) * | 2020-09-28 | 2023-03-31 | 湖南南方机床有限公司 | Spiral broaching machine cutter bar capable of achieving three-axis linkage |
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| US8550755B2 (en) * | 2011-06-17 | 2013-10-08 | The Tapmatic Corporation | Tap driver for rigid/synchronous tapping |
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| DE2202104A1 (en) * | 1971-03-15 | 1972-10-05 | Tapmatic Corp | Tapping spindle with built-in release clutch and automatic depth control |
| CN106166635A (en) * | 2015-05-19 | 2016-11-30 | 株式会社韩亚微技术 | The metallic plate of impact is prevented when screw tap secure private dynamic torque tool and generation torsion thereof |
| CN205927388U (en) * | 2016-08-02 | 2017-02-08 | 宁波欧乐机械有限公司 | Micro stretching rigidity tapping handle of a knife that contracts |
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| CN108380987A (en) | 2018-08-10 |
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