CN112828613A - Machining method of special-shaped bearing bush - Google Patents
Machining method of special-shaped bearing bush Download PDFInfo
- Publication number
- CN112828613A CN112828613A CN202011611160.1A CN202011611160A CN112828613A CN 112828613 A CN112828613 A CN 112828613A CN 202011611160 A CN202011611160 A CN 202011611160A CN 112828613 A CN112828613 A CN 112828613A
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- Prior art keywords
- base body
- workpiece
- special
- inclined hole
- shaped bearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turning (AREA)
Abstract
The invention relates to the technical field of special-shaped bearing bush production, and discloses a processing method of a special-shaped bearing bush, which comprises the following steps: the clamp comprises a base body, wherein an inclined hole is formed in the base body, a stop block is connected to the end wall of one end of the base body in a threaded mode, one side of the stop block blocks part of the inclined hole, a first expansion joint and a plurality of second expansion joints are formed in the base body, the first expansion joints and the plurality of second expansion joints are uniformly distributed on the base body around the circumferential direction of the inclined hole, the first expansion joints penetrate through the base body, and the first expansion joints are communicated with the inclined hole; A. clamping a workpiece; B. installing a clamp; C. cutting an inclined plane for the first time; D. and (5) secondary bevel cutting. According to the invention, the inclination of the cutting inclined plane is obtained by setting the inclination degree of the inclined hole, the lathe tool is not required to perform other movements during feeding, and the lathe tool is not easy to damage during cutting, so that the problems that the inclination of the cutting inclined plane is inaccurate, and the lathe tool is easy to damage due to the fact that the lathe tool needs to walk a specific route during cutting in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of special-shaped bearing bush production, in particular to a processing method of a special-shaped bearing bush.
Background
With the continuous development of productivity, the problems originally encountered in processing are continuously overcome by people; the special-shaped bearing bush is a special accessory for small-sized and high-power vehicles, and because of the high processing difficulty and high cost, the international large-sized vehicle development and research conference in 2019 provides that vehicle manufacturers also want accessory enterprises to improve the processing of the special-shaped bearing bush so as to better reduce the processing difficulty and cost of the special-shaped bearing bush.
The special-shaped bearing bush is a nonstandard cylindrical bearing bush, the end face of the special-shaped bearing bush is often provided with an inclined plane part, and the current process for machining the inclined plane is as follows: first, blanking is carried out, fixed round pipes are bent through punching of a punching process, then, each round pipe is subjected to slope cutting, the slope machining allowance at the moment is very large, if a turning tool is directly used for machining, the turning tool needs to walk on a specific route in the rotating process of the round pipe to complete the machining, a manual lathe is directly used, the inclination angle of the slope is often inaccurate, and therefore the modes of wire cutting, numerical control lathe machining and the like are adopted in the prior art, and the manual lathe machining with low equipment cost is not selected by people. But the numerical control lathe is higher in cost per se, and in the machining process, the turning tool walks a specific route to cut, so that the stress of the turning tool is constantly changed, the cutting is unstable, the turning tool is easy to damage, the service life of the tool is shortened, the replacement frequency of the tool is increased, and the machining efficiency of the lathe is greatly reduced.
Disclosure of Invention
The invention aims to provide a processing method of a special-shaped bearing bush, which can directly realize the processing of the inclined plane of the special-shaped bearing bush by using a motor lathe and solve the problems that the cutting inclined plane has inaccurate gradient and a turning tool is easy to damage due to the fact that the turning tool needs to walk a specific route in the cutting process in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a processing method of a special-shaped bearing bush comprises the following steps:
the clamp comprises a base body, wherein an inclined hole is formed in the base body, a stop block is connected to the end wall of one end of the base body in a threaded mode, one side of the stop block blocks part of the inclined hole, a first expansion joint and a plurality of second expansion joints are formed in the base body, the first expansion joints and the plurality of second expansion joints are uniformly distributed on the base body around the circumferential direction of the inclined hole, the first expansion joints penetrate through the base body, and the first expansion joints are communicated with the inclined hole;
A. workpiece clamping: inserting a tubular workpiece into the inclined hole of the base body, wherein the tubular workpiece is inclined, and one end of the workpiece is blocked and limited in the inclined hole by the stop block;
B. installing a clamp: clamping the base body by using a chuck of a lathe, so that the circle center of a rotating track at the cutting point of the workpiece is collinear with the rotating center of the chuck;
C. primary bevel cutting: the lathe chuck rotates to drive the workpiece to rotate, the turning tool is adjusted to a preset position to carry out direct feed, and the turning tool can cut an inclined surface on the workpiece;
D. secondary bevel cutting: and C, after an inclined plane is cut at one end, the clamp is detached from the chuck, the cutting excess material is reset to the inclined plane, the workpiece is loaded into the substrate in a state that the cutting excess material faces inwards, and then the steps B and C are repeated, so that the inclined plane can be cut at the other end. The technical principle and the beneficial effects of the invention are as follows:
according to the invention, the inclined hole with the inner diameter slightly larger than or equal to the outer diameter of the workpiece is arranged, the base body is expanded from the first expansion joint, an operator can easily insert the workpiece into the inclined hole, and due to the existence of the second expansion joint, the base body has enough deformation space during expansion, so that the base body is prevented from being broken and damaged. After the workpiece is inserted into the inclined hole, one end of the workpiece abuts against a pre-adjusted stop block, then the base body can be placed into a lathe chuck for clamping, the chuck applies force to the base body, the first expansion joint and the second expansion joint are tightened, the workpiece is clamped and fixed, then the chuck is rotated, the base body drives the workpiece to rotate, the lathe tool is linearly fed at a preset fixed position, and an inclined plane can be cut on the workpiece; when the inclined plane of the other end of the workpiece is cut, the cutting excess material can be reset on the inclined plane and then the workpiece is put into the base body, so that the other end of the workpiece is in contact with the cutter, then the chuck is used for clamping, secondary inclined plane cutting is completed, and the change of the length of the workpiece can be avoided.
1. Compared with the prior art, the technical scheme of the invention can obtain the inclination of the cutting inclined plane by setting the inclination degree of the inclined hole, and prevent the inclined plane with inaccurate cutting inclination angle from occurring.
2. Compared with the prior art, the technical scheme of the invention has the advantages that the workpiece is inclined through the arrangement of the inclined hole, the movement similar to a circle or an ellipse can be carried out, the lathe tool can reach a fixed position after being fed, and other movements are not needed, so that the lathe tool is uniformly stressed in the cutting process and is not easy to damage, the service life of the lathe tool is prolonged, and the cost is prevented from being increased.
3. Compared with the prior art, the technical scheme of the invention only adds the clamp, has a very simple structure, improves the production efficiency and the production practicability, and is convenient to popularize and promote.
In order to realize the processing of the special-shaped bearing bush inclined plane on a common manual lathe, the inventor conducts a series of researches. The inclined plane is cut by changing the feed track of the cutter, which seriously shortens the service life of the turning tool. Therefore, the inventor develops a new method, the cutter is not moved, the cutting of the inclined plane is realized by changing the motion track of the workpiece, and the new requirements are provided for the clamp for clamping the workpiece: the workpiece is placed in an inclined mode, the workpiece rotates to form a similar circular or oval motion track, meanwhile, the stability of workpiece clamping is guaranteed, the structure of the clamp is very complex, the inventor continuously researches and improves, the clamp is simple in structure in the scheme, the requirements can be met simultaneously, and the scheme is finally obtained.
Furthermore, the base body is a cylinder, and the inclined hole is eccentrically arranged on the base body.
Has the advantages that: the purpose is that after a workpiece is placed in the clamp, when the lathe drives the clamp to rotate, the workpiece placed in the eccentric hole of the clamp makes a motion similar to an ellipse, and after a lathe tool is used for machining, the end part of the workpiece is inclined.
Further, the inclination of the inclined hole is greater than 0 ° and 21.3 ° or less.
Has the advantages that: the inclination of the formed part is determined by the size of an included angle formed by the intersection of the central line of the base body and the central line of the eccentric hole, the included angle is set to be theta, and the inclined plane with the angle larger than 0 degree and smaller than or equal to 21.3 degrees can be well processed.
Furthermore, the number of the second expansion joints is at least two, and the width of the second expansion joint is 1.3 mm-1.6 mm.
Has the advantages that: in order to facilitate the effective clamping of a workpiece, the outer edge of the clamp is provided with a first expansion joint and a second expansion joint, so that a blank piece can be conveniently placed in the clamp, the clamp can be better fixed, and the rotation can be prevented; the second rises the seam and is two at least for first and second rises seam total number more than or equal to 3, and the quantity is more, and the centre gripping is more steady, and the second rises the seam width and between 1.3mm ~ 1.6mm, makes the stress more balanced, and the centre gripping fastness further improves.
Furthermore, the substrate is made of No. 45 steel, and the distance from the bottom of the second expansion joint to the inclined hole is 2.8-3.2 mm.
Has the advantages that: according to the strength requirement of No. 45 steel, the distance between the bottom of the second expansion joint and the inner wall of the base body is set to be 2.8-3.2 mm, and the distance is too small, so that the clamp is easy to break after clamping; too big distance, can't carry out effectual centre gripping, cause the fashioned problem of influence after the unexpected rotation of work piece easily.
Furthermore, the width of the first expansion joint is 2 mm-2.2 mm.
Has the advantages that: the width of the first expansion joint is between 2mm and 2.2mm, and the width of the second expansion joint is between 1.3mm and 1.6mm, so that the stress is more balanced, and the clamping firmness is further improved.
Furthermore, a marking groove is formed in one end, far away from the stop block, of the base body, and in the step A, the marking groove corresponds to an initial processing mark of the workpiece or a mark marked on the workpiece by using a marking pen.
Has the advantages that: after the workpiece is subjected to some inclined plane cutting or secondary inclined plane cutting, the workpiece can be judged not to be deviated according to the fact that the marking groove corresponds to the mark or the seal mark, and the workpiece can be judged to be deviated according to the fact that the marking groove does not correspond to the mark or the seal mark.
Furthermore, the end wall of one end of the base body connected with the stop block is provided with a threaded hole, the stop block is provided with a through hole, and the base body connected with the stop block further comprises a hexagon bolt, and the hexagon bolt penetrates through the through hole and is in threaded connection with the threaded hole.
Has the advantages that: according to the length of the workpiece, the hexagon bolt is screwed, and the position of the stop block is adjusted, so that the workpiece with different lengths is adapted.
Drawings
Fig. 1 is a perspective view of a clamp for clamping a workpiece according to an embodiment of a method for machining a special-shaped bearing bush of the invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a base body 1, a workpiece 2, a first expansion joint 3, a second expansion joint 4, a hexagon bolt 5, a stop block 6, a marking groove 7 and an inclined hole 8.
Examples
See in particular fig. 1:
a processing method of a special-shaped bearing bush comprises the following steps:
a clamp is required to be used, the clamp comprises a base body 1, the base body 1 can be made of No. 45 steel or spring steel, the base body 1 is a cylinder, an inclined hole 8 is formed in the base body 1, the inclined hole 8 is eccentrically formed in the base body 1, the inclination of the inclined hole 8 is greater than 0 degrees and less than or equal to 21.3 degrees, the inclination of the inclined hole 8 is 12 degrees, a threaded hole is formed in the end wall of the left end of the base body 1, the clamp further comprises a stop block 6 and a hexagonal bolt 5, a through hole is formed in the stop block 6, the hexagonal bolt 5 penetrates through the through hole and is connected into the threaded hole in a threaded manner, a part of the inclined hole 8 is blocked on the upper side of the stop block 6, a first expansion joint 3 and three second expansion joints 4 are formed in the base body 1, the first expansion joint 3 and the plurality of second expansion joints 4 are uniformly distributed on the base body 1 in the circumferential direction around the inclined hole 8, the first expansion joint 3 penetrates through the base body 1, the width of the second expansion joint 4 is 1.5mm, the distance from the bottom of the second expansion joint 4 to the inclined hole 8 is 3mm, a marking groove 7 is formed in the right side end of the base body 1, a mark of the workpiece 2 initially processed by the marking groove 7 or a mark marked by a marking pen corresponds to the marking groove 7, and after processing, whether the workpiece 2 deviates or not can be judged according to the correspondence between the marking groove and the mark or the mark;
A. workpiece clamping: the base body 1 is opened from the first expansion joint 3, then the tubular workpiece 2 is inserted into the inclined hole 8 of the base body 1, the base body 1 retracts to clamp the workpiece 2, the workpiece 2 is inclined, the hexagonal bolt 5 is screwed according to the length of the workpiece 2, the stop block 6 reaches a proper position, then the left end of the workpiece 2 is abutted against the stop block 6, the stop block 6 limits the workpiece 2 in the inclined hole 8, and the impression or mark of the workpiece 2 corresponds to the marking groove 7 in position;
B. installing a clamp: clamping the clamp base body 1 by using a chuck of a lathe, enabling the circle center of a rotating track at the cutting position of the workpiece 2 to be collinear with the rotating center of the chuck, and enabling the base body 1 to stably clamp the workpiece 2 due to the existence of the first expansion joint 3 and the second expansion joint 4;
C. primary bevel cutting: the lathe chuck is driven to rotate, the chuck drives the base body 1 to rotate, the base body 1 drives the workpiece 2 to move in a similar elliptical track, the turning tool is adjusted to a preset fixed position to perform direct feed, and the turning tool can cut a required inclined plane on the workpiece 2 without other movement;
D. secondary bevel cutting: after the inclined plane is cut out to work piece 2 right-hand member, the chuck stops rotating, observe whether mark groove 7 corresponds with the position of impression or seal of a government organization in old china, if correspond, then work piece 2 does not take place the skew during processing, operating personnel can demolish anchor clamps from the chuck, and reset the cutting clout to work piece 2 right-hand member behind the inclined plane, in with the state that the cutting clout is inwards with work piece 2 reload into base member 1, then repeat above step B and C, can cut out the inclined plane to work piece 2 left end, after processing, still need observe whether mark groove 7 corresponds with the position of impression or seal of a government organization in old china, if correspond, then be qualified product.
When the inclined plane of another gradient needs to be processed to work piece 2, only need pull down base member 1, change base member 1 that has another inclined hole 8 (the gradient is different) and come centre gripping work piece 2, lathe tool and other parts of lathe need not to change, can cut out required inclined plane, convenient operation to work piece 2.
In this scheme, rely on the rotatory similar oval orbit of work piece 2, the inclined plane can be cut out in the direct feed of lathe tool, and other complicated motions need not to be done to the lathe tool, and the effectual lathe tool that has protected has prolonged the life of lathe tool.
The base body 1 is broken off from the first expansion joint 3, the workpiece 2 is placed in, and the base body 1 retracts to clamp the workpiece 2, so that the workpiece 2 is stably clamped (the existence of the second expansion joint 4 provides enough deformation space for the base body 1 and the base body 1 is prevented from being damaged and broken); and the clamping stability of the workpiece 2 is further improved by fixing the chuck. In addition, the workpiece 2 is subjected to resistance exerted by the inclined surface of the inclined hole 8 in the radial direction in the rotating process, the radial deviation of the workpiece 2 can be effectively avoided, in addition, the stop block 6 blocks the axial movement of the workpiece 2, the clamping stability of the workpiece 2 is further improved, and the inclination accuracy of the cutting inclined surface is further ensured.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A processing method of a special-shaped bearing bush is characterized by comprising the following steps:
the method comprises the following steps:
the clamp comprises a base body, wherein an inclined hole is formed in the base body, a stop block is connected to the end wall of one end of the base body in a threaded mode, one side of the stop block blocks part of the inclined hole, a first expansion joint and a plurality of second expansion joints are formed in the base body, the first expansion joints and the plurality of second expansion joints are uniformly distributed on the base body around the circumferential direction of the inclined hole, the first expansion joints penetrate through the base body, and the first expansion joints are communicated with the inclined hole;
A. workpiece clamping: inserting a tubular workpiece into the inclined hole of the base body, wherein the tubular workpiece is inclined, and one end of the workpiece is blocked and limited in the inclined hole by the stop block;
B. installing a clamp: clamping the base body by using a chuck of a lathe, so that the circle center of a rotating track at the cutting point of the workpiece is collinear with the rotating center of the chuck;
C. primary bevel cutting: driving a lathe chuck to rotate to drive a workpiece to rotate, adjusting a turning tool to a preset position to perform direct feed, and cutting the workpiece into an inclined surface by the turning tool;
D. secondary bevel cutting: and C, after an inclined plane is cut at one end of the workpiece, the clamp is detached from the chuck, the cutting excess material is reset to the inclined plane, the workpiece is loaded into the substrate in an inward state, and then the steps B and C are repeated, so that the inclined plane can be cut at the other end of the workpiece.
2. The method for machining a special-shaped bearing shell according to claim 1, wherein the base body is a cylindrical body, and the inclined hole is eccentrically formed in the base body.
3. The method for machining a special-shaped bearing shell according to claim 2, wherein the inclination of the inclined hole is greater than 0 ° and less than or equal to 21.3 °.
4. The processing method of the special-shaped bearing bush as recited in claim 2, wherein the number of the second expansion joints is at least two, and the width of the second expansion joint is 1.3mm to 1.6 mm.
5. The processing method of the special-shaped bearing bush as recited in claim 4, wherein the base body is made of 45 steel, and the distance from the bottom of the second expansion joint to the inclined hole is 2.8 mm-3.2 mm.
6. The machining method for the special-shaped bearing bush as recited in claim 5, wherein the width of the first expansion joint is 2 mm-2.2 mm.
7. A method for machining a special-shaped bearing shell according to claim 1, wherein a marking groove is formed in one end of the base body, which is far away from the stop block, and in the step a, the marking groove is made to correspond to an impression originally made on the workpiece by machining or an impression marked on the workpiece by using a marking pen.
8. The processing method of the special-shaped bearing bush as claimed in claim 1, wherein the end wall of the base body connected with the stopper is provided with a threaded hole, the stopper is provided with a through hole, and the processing method further comprises a hexagon bolt, and the hexagon bolt penetrates through the through hole and is in threaded connection with the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011611160.1A CN112828613B (en) | 2020-12-30 | 2020-12-30 | Machining method of special-shaped bearing bush |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011611160.1A CN112828613B (en) | 2020-12-30 | 2020-12-30 | Machining method of special-shaped bearing bush |
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| CN112828613A true CN112828613A (en) | 2021-05-25 |
| CN112828613B CN112828613B (en) | 2022-09-23 |
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| CN203863397U (en) * | 2014-05-29 | 2014-10-08 | 浙江信息工程学校 | Clamp for efficient machining of inclined plane |
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| CN104948589A (en) * | 2015-05-29 | 2015-09-30 | 江苏飞月轴瓦有限公司 | Integrated thrust bearing shell |
| CN104948587A (en) * | 2015-05-29 | 2015-09-30 | 江苏飞月轴瓦有限公司 | Three-layer structure main bearing shell |
| CN209539830U (en) * | 2018-07-26 | 2019-10-25 | 浙江诸暨市轴瓦总厂有限公司 | A kind of bearing bush structure being easily installed |
| CN210655737U (en) * | 2019-08-30 | 2020-06-02 | 湘煤立达矿山装备股份有限公司 | Movable wheel assembly and multi-rope friction type elevator head sheave device |
| CN210849264U (en) * | 2019-11-05 | 2020-06-26 | 大冶华瑞机械制造有限公司 | Cylindrical workpiece inclined plane cutting clamp |
| CN211163165U (en) * | 2019-12-09 | 2020-08-04 | 东莞吉鑫五金科技有限公司 | Lathe tool grinding device |
| CN111975403A (en) * | 2020-08-25 | 2020-11-24 | 江西福事特液压有限公司 | Machining clamp for drilling inclined hole |
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2020
- 2020-12-30 CN CN202011611160.1A patent/CN112828613B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1596239A (en) * | 1977-04-04 | 1981-08-19 | Bruss Fiz Tech I An | Toolholder for rotary cutting tools |
| CN202517512U (en) * | 2011-12-23 | 2012-11-07 | 瑞钛（南京）科技有限公司 | Cutter for processing slant-ended rubber-plastic sealing ring |
| CN202591914U (en) * | 2012-05-02 | 2012-12-12 | 成都大宏立机器制造有限公司 | Vertical machine tool capable of performing inclined surface machining |
| CN203863397U (en) * | 2014-05-29 | 2014-10-08 | 浙江信息工程学校 | Clamp for efficient machining of inclined plane |
| CN104526106A (en) * | 2014-12-15 | 2015-04-22 | 柳州金盾机械有限公司 | Structural member inclined surface machining method |
| CN104948589A (en) * | 2015-05-29 | 2015-09-30 | 江苏飞月轴瓦有限公司 | Integrated thrust bearing shell |
| CN104948587A (en) * | 2015-05-29 | 2015-09-30 | 江苏飞月轴瓦有限公司 | Three-layer structure main bearing shell |
| CN209539830U (en) * | 2018-07-26 | 2019-10-25 | 浙江诸暨市轴瓦总厂有限公司 | A kind of bearing bush structure being easily installed |
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| CN211163165U (en) * | 2019-12-09 | 2020-08-04 | 东莞吉鑫五金科技有限公司 | Lathe tool grinding device |
| CN111975403A (en) * | 2020-08-25 | 2020-11-24 | 江西福事特液压有限公司 | Machining clamp for drilling inclined hole |
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| Publication number | Publication date |
|---|---|
| CN112828613B (en) | 2022-09-23 |
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