CN108466168B - Novel mechanical grinding clamp with adjustable micro grinding thickness - Google Patents
Novel mechanical grinding clamp with adjustable micro grinding thickness Download PDFInfo
- Publication number
- CN108466168B CN108466168B CN201810466248.5A CN201810466248A CN108466168B CN 108466168 B CN108466168 B CN 108466168B CN 201810466248 A CN201810466248 A CN 201810466248A CN 108466168 B CN108466168 B CN 108466168B
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- Prior art keywords
- wedge block
- block
- mounting groove
- driven
- compression spring
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- 230000006835 compression Effects 0.000 claims abstract description 47
- 238000007906 compression Methods 0.000 claims abstract description 47
- 239000012188 paraffin wax Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 229910052594 sapphire Inorganic materials 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 20
- 238000013461 design Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 8
- 238000003754 machining Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/27—Work carriers
- B24B37/30—Work carriers for single side lapping of plane surfaces
-
- 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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/34—Accessories
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The novel mechanical grinding processing clamp comprises a clamp body, a workpiece carrying disc, a driving inclined wedge block, a driven inclined wedge block, a compression spring, an upper dovetail groove block, a lower dovetail groove block, a sheet-shaped workpiece, substitutes, differential heads and an end cover, wherein the substitutes are bonded on the lower end face of the clamp body through paraffin; the middle part of the clamp body is sequentially provided with a driving wedge block mounting groove, a driven wedge block mounting groove, a compression spring mounting groove and a dovetail groove block mounting groove from top to bottom along the vertical direction; the lower dovetail groove block and the upper dovetail groove block are mutually detachably matched and are installed in the dovetail groove installation groove together. The invention provides a novel mechanical grinding clamp with adjustable micro grinding thickness, which can realize accurate adjustment of different micro grinding thicknesses according to different thicknesses of a workpiece to be processed, and can remarkably improve grinding processing efficiency and workpiece processing surface quality by utilizing the design of substitutes and surface fine runners.
Description
Technical Field
The invention belongs to the technical field of plane grinding machining tool fixtures, and particularly relates to a novel mechanical grinding machining fixture with adjustable micro grinding thickness, in particular to a grinding machining tool fixture capable of obtaining higher surface quality and low damage.
Background
The surface removal amount of the material in the plane grinding process is in the micron order, the material removal amount in rough grinding is generally about 0.3mm, and the material removal amount in conventional grinding and fine grinding is generally about several microns to tens or tens of microns. In the plane grinding processing process, a workpiece to be processed is adhered to a workpiece carrying disc through paraffin, then the workpiece carrying disc is installed in a grinding clamp, in general, the workpiece of the same patch is of the same height, the thickness value of the removed workpiece can be known only after the workpiece is detached from the carrying disc, the grinding removal height of the workpiece, namely the machining allowance, cannot be adjusted and controlled in advance, the grinding removal height of the workpiece cannot be judged generally according to processing parameters such as grinding time, grinding pressure, abrasive grain granularity and the like, and the related micro grinding thickness measuring method and device are used for controlling the removal thickness in the processing process, but are complex and relatively high in cost. For general grinding processing, a method for taking off a workpiece on a clamp to measure can be adopted, but sometimes the workpiece cannot be detached or the positioning and the precision of subsequent processing are affected after being detached in the processing process, and the direct measurement method is unsuitable for achieving the required grinding processing allowance. Therefore, the design of a set of grinding fixture clamp which can realize the adjustment of micro grinding height and is suitable for grinding workpieces with different thicknesses is necessary.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the novel mechanical grinding processing clamp with adjustable micro grinding thickness, overcomes the defect that the grinding removal thickness of a workpiece, namely the processing allowance, cannot be adjusted and controlled in advance, can realize the accurate adjustment of different micro grinding thicknesses according to the different thicknesses of the processed workpiece, and can remarkably improve the grinding processing efficiency and the processing surface quality of the workpiece by utilizing the design of substitutes and surface fine runners.
The technical scheme adopted for solving the technical problems is as follows:
the novel mechanical grinding clamp comprises a clamp body, a workpiece carrying disc, a driving inclined wedge, a driven inclined wedge, a compression spring, an upper dovetail groove block, a lower dovetail groove block, a sheet-shaped workpiece, substitutes, differential heads and an end cover, wherein a stepped groove is formed in the workpiece carrying disc, the workpiece carrying disc is reversely buckled and installed on the lower end of the clamp body, and is at the same time level with the bottom surface of the clamp body, and the substitutes are bonded on the lower end surface of the clamp body through paraffin;
the middle part of the clamp body is sequentially provided with a driving wedge block mounting groove, a driven wedge block mounting groove, a compression spring mounting groove and a dovetail groove block mounting groove from top to bottom along the vertical direction; the lower dovetail groove block and the upper dovetail groove block are mutually detachably matched and are installed in the dovetail groove installation groove together, the sheet-shaped workpiece is adhered to the lower dovetail groove block through paraffin, and the clamp body is also provided with a fastening screw I for fastening the upper dovetail groove block; the driven inclined wedge block is arranged in the driven inclined wedge block mounting groove, the lower end of the driven inclined wedge block passes through the compression spring mounting groove and is fixedly connected with the upper dovetail groove block, and the compression spring is arranged in the compression spring mounting groove and is sleeved outside the driven inclined wedge block; the driving wedge block is arranged in the driving wedge block mounting groove, the wedge surface of the driving wedge block is tightly attached to the wedge surface of the driven wedge block, one end of the driving wedge block is arranged on the groove wall of the driving wedge block mounting groove through a small compression spring, the differential head is arranged on the clamp body and is radially fixed through the differential head nut serving as an axial fixing and fastening screw II, the small compression spring is tightly pressed by the spherical end of the differential head through pushing the other end of the driving wedge block, and the translation amount of the driving wedge block is regulated through regulating the differential head, so that the driven wedge block is driven to move up and down; the end cover is in contact with and tightly presses the upper end face of the driving wedge block, and is fixedly connected with the clamp body through a screw;
the width of the inclined wedge surface of the driving inclined wedge is smaller than that of the inclined wedge surface of the driven inclined wedge, the periphery of the driving inclined wedge is provided with a cylindrical small hole, and the end cover is provided with a circular hole through hole which is coaxially arranged with the cylindrical small hole. Because the width of the wedge surface of the driving wedge block is smaller than that of the wedge surface of the driven wedge block, the driving wedge block does not shade the cylindrical small hole.
Further, a small compression spring mounting groove II is formed in one side of the driving wedge mounting groove, a side wall round hole is formed in the other side of the driving wedge mounting groove, a small compression spring mounting groove I is formed in one end of the driving wedge, one end of the small compression spring is mounted in the small compression spring mounting groove II, and the other end of the small compression spring is mounted in the small compression spring mounting groove I; the micro-head is in interference fit with the side wall round hole.
Still further, driven slide wedge includes driven slide wedge section and cylinder, and driven slide wedge section installs in driven slide wedge mounting groove, the cylinder passes compression spring mounting groove and goes up dovetail piece fixed connection through hexagon socket head cap screw, compression spring with the cylinder is hugged closely and is set up.
Still further, the number of the sheet-like workpieces is five.
Still further, the wedge angles of the driving wedge block and the driven wedge block are 5.71 degrees, namely the ratio of the vertical height to the horizontal length of the wedge surface of the driving wedge block is 0.1, and the ratio of the vertical height to the horizontal length of the wedge surface of the driven wedge block is also 0.1; the roughness values of the wedge surface of the driving wedge block and the wedge surface of the driven wedge block are smaller than or equal to 0.4 mu m.
Still further, the material of the substitute has a modulus of elasticity greater than that of the sheet-like workpiece, and the substitute is made of sapphire and alumina ceramics.
Still further, a fine runner is formed on the surface of the substitute, and the fine runner is a straight micro runner or a cross micro runner.
Further, the precision of the differential head is 5 μm, and the measuring range is 6.5mm.
The beneficial effects of the invention are mainly shown in the following steps: the micro-head driving wedge block and the driven wedge block are adopted to drive the wedge block mechanism formed by the driving wedge block and the driven wedge block to accurately adjust the micro-grinding thickness of the grinding workpiece, the micro-adjustment precision is improved to 0.5 mu m from the original 10 mu m, the grinding requirements of the workpieces with different thicknesses can be met, the design of a fine runner on the surface of a substitute is favorable for improving the number of abrasive particles which participate in grinding processing at the same time, and the high-efficiency grinding processing and the plane grinding processing effect with low surface damage are hopefully achieved.
Drawings
Fig. 1 is a front cross-sectional view of the present invention.
FIG. 2 is an isometric view of a lower dovetail block of the present invention.
Fig. 3 is a top view of a single sheet-like workpiece of the present invention.
Fig. 4 is an isometric view of a driven wedge in accordance with the present invention.
Fig. 5 is a top view of the end cap of the present invention.
Fig. 6 is a top view of a sheet-like workpiece and a linear microchannel substitute of the present invention.
Fig. 7 is a top view of a sheet-like workpiece and cross-shaped microchannel substitute of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 7, the novel mechanical grinding processing clamp with adjustable micro grinding thickness comprises a small compression spring 1, a driven inclined wedge block 2, a clamp body 3, a compression spring 4, an upper dovetail groove block 5, a lower dovetail groove block 6, a sheet-shaped workpiece 7, a substitute 8, a workpiece carrying disc 9, a differential head 16, an end cover 19 and a driving inclined wedge 21, wherein a driving inclined wedge mounting groove 20, a driven inclined wedge mounting groove 14, a compression spring mounting groove 12 and a dovetail groove mounting groove 11 are sequentially processed in the middle of the clamp body 3 along the vertical direction of the clamp body 3, one side of the driving inclined wedge mounting groove 20 is provided with a small compression spring mounting groove ii 23, and the other side of the driving inclined wedge mounting groove 20 is provided with a side wall round hole 18. The substitute 8 is adhered to the lower end plane of the clamp body 3 through paraffin, five sheet-shaped workpieces 7 are adhered to the lower dovetail groove block 6 through paraffin, the upper dovetail groove block 5 and the lower dovetail groove block 6 are mutually matched and are installed in the dovetail groove installation groove 11 of the clamp body 3 together, one side of the upper dovetail groove block 5 is fastened by a fastening screw I10, a step groove is formed in the workpiece carrying disc 9, the workpiece carrying disc is reversely buckled and installed at the lower end of the clamp body 3 and is level with the bottom surface of the clamp body 3, the driven wedge block 2 consists of a driven wedge section 24 and a cylinder 25, the driven wedge block 2 is installed in the driven wedge block installation groove 14, the cylinder penetrates through the compression spring installation groove 12, the upper dovetail groove block 5 is fixedly connected with the cylinder 25 of the driven wedge block 2 through an inner hexagon screw 13 to enable the driven wedge block 2 and the upper dovetail groove block 5 to move up and down together, the compression spring 4 is sleeved outside the cylinder 25 of the driven wedge block 2 and is fixedly connected to one side of the compression spring mounting groove 12, the driven wedge block 2 is tightly attached to the compression spring 4, the driving wedge block 21 is mounted in the driving wedge block mounting groove 20, the wedge surface of the driving wedge block 21 is tightly attached to the wedge surface of the driven wedge block 2, one end of the driving wedge block 21 is provided with a small compression spring mounting groove I22, the small compression spring 1 is fixedly connected to a small compression spring mounting groove II 23 on the inner wall of the clamp body 3, the small compression spring mounting groove I22 on the driving wedge block 21 is tightly attached to the small compression spring 1, the differential head 16 is in interference fit with a side wall round hole 18 of the clamp body 3, and the differential head nut 15 is used as an axial fixing and fastening screw II 17 for radial fixing, the spherical end of the differential head 16 tightly presses the small compression spring 1 by propping against the other end of the driving wedge 21, the end cover 19 contacts with and presses against the upper end surface of the driving wedge 21 and is fixedly connected with the clamp body 3 through a screw, and a round hole through hole 27 on the end cover 19 is coaxial with a cylindrical small hole 26 on the driven wedge 2.
The number of the sheet-shaped workpieces 7 in the example is five, the number of the sheet-shaped workpieces can be adjusted according to the design width of the lower dovetail groove block 6, and the lower dovetail groove block 6 has different design heights for selection, so that the sheet-shaped workpieces 7 with the thickness of 1-5 mm can be subjected to grinding processing and micro-grinding height adjustment at one time;
the inclined wedge angles of the driving inclined wedge 21 and the driven inclined wedge 2 are 5.71 degrees and less than 11 degrees, so that the self-locking function is formed after the grinding height adjustment is finished, the ratio of the vertical height to the horizontal length of the two inclined wedges is 0.1, and in addition, the roughness value of the surfaces of the two inclined wedges is not higher than 0.4 mu m for ensuring the stable movement of the two inclined wedges;
the precision of the micro-head 16 is 5 mu m, the measuring range is 6.5mm, and the micro-grinding height adjusting precision is improved to 0.5 mu m through the proportion relation between the vertical and horizontal 0.1 of the inclined wedge mechanism, so that the micro-grinding height adjusting range is reduced to 0.65mm;
the elastic modulus of the material of the substitute 8 is larger than that of a grinding workpiece, generally more than 2 times, and the use of the substitute 8 can effectively reduce the grinding surface roughness value and surface damage of the sheet-shaped workpiece 7 by using sapphire and alumina ceramics;
to increase the efficiency of the grinding process, a fine runner of a certain size is provided on the surface of the substitute 8, and this example provides runners of two structures, one being a straight runner 28 and the other being a cross runner 29, as shown in fig. 5 and 6.
The main working process of the invention is as follows: when the micro grinding height of the sheet-shaped workpiece 7 is adjusted, the differential head 16 is rotated, the spherical end of the differential head 16 pushes the driving wedge block 21 to move, the driven wedge block 2 is driven to vertically move through the inclined plane fit between the driving wedge block 21 and the driven wedge block 2, so that the upper dovetail groove block 5 and the lower dovetail groove block 6 are driven to vertically move together, the height of the sheet-shaped workpiece 7 adhered to the lower dovetail groove block 6 is adjusted, when the adjusted grinding height reaches the required grinding removal amount, the fastening screw I10 is screwed to tightly jack the upper dovetail groove block 5, and then plane grinding processing is carried out. When the sheet-shaped workpieces 7 with different thicknesses are required to be replaced after machining, the elastic fixing screw I10 and the differential head 16 are screwed, a small cylindrical rod penetrates through the round hole through hole 27 in the end cover 19, the cylindrical small hole 26 in the driven inclined wedge block 2 is pressed downwards, the lower dovetail groove block 6 and the sheet-shaped workpieces are ejected out of the dovetail groove mounting groove 11 of the clamp body 3 under the action of the compression spring 4, then the lower dovetail groove block 6 is removed from the upper dovetail groove block 5, the machined sheet-shaped workpieces 7 are removed, finally the sheet-shaped workpieces 7 with the other thickness are replaced, and the micro grinding thickness adjustment of the next stage is performed.
The above embodiments are only preferred embodiments of the present invention, and are not limiting to the technical solutions of the present invention, and any technical solution that can be implemented on the basis of the above embodiments without inventive effort is considered to fall within the scope of protection of the patent claims of the present invention.
Claims (4)
1. The utility model provides a novel mechanical grinding adds clamping apparatus of micro-grinding thickness adjustable which characterized in that: the fixture comprises a fixture body, a workpiece carrying disc, a driving wedge block, a driven wedge block, a compression spring, an upper dovetail groove block, a lower dovetail groove block, a sheet-shaped workpiece, a substitute, a differential head and an end cover, wherein a stepped groove is formed in the workpiece carrying disc, the workpiece carrying disc is reversely buckled and installed on the lower end of the fixture body and is at the same time level with the bottom surface of the fixture body, and the substitute is bonded on the lower end surface of the fixture body through paraffin;
the middle part of the clamp body is sequentially provided with a driving wedge block mounting groove, a driven wedge block mounting groove, a compression spring mounting groove and a dovetail groove block mounting groove from top to bottom along the vertical direction; the lower dovetail groove block and the upper dovetail groove block are mutually detachably matched and are installed in the dovetail groove installation groove together, the sheet-shaped workpiece is adhered to the lower dovetail groove block through paraffin, and the clamp body is also provided with a fastening screw I for fastening the upper dovetail groove block; the driven inclined wedge block is arranged in the driven inclined wedge block mounting groove, the lower end of the driven inclined wedge block passes through the compression spring mounting groove and is fixedly connected with the upper dovetail groove block, and the compression spring is arranged in the compression spring mounting groove and is sleeved outside the driven inclined wedge block; the driving wedge block is arranged in the driving wedge block mounting groove, the wedge surface of the driving wedge block is tightly attached to the wedge surface of the driven wedge block, one end of the driving wedge block is arranged on the groove wall of the driving wedge block mounting groove through a small compression spring, the differential head is arranged on the clamp body and is radially fixed through the differential head nut serving as an axial fixing and fastening screw II, the small compression spring is tightly pressed by the spherical end of the differential head through pushing the other end of the driving wedge block, and the translation amount of the driving wedge block is regulated through regulating the differential head, so that the driven wedge block is driven to move up and down; the end cover is in contact with and tightly presses the upper end face of the driving wedge block, and is fixedly connected with the clamp body through a screw;
the width of the inclined wedge surface of the driving inclined wedge is smaller than that of the inclined wedge surface of the driven inclined wedge, the driven inclined wedge is provided with cylindrical small holes on the periphery of the driving inclined wedge, and the end cover is provided with a circular hole through hole which is coaxially arranged with the cylindrical small holes;
a small compression spring mounting groove II is formed in one side of the driving wedge block mounting groove, a side wall round hole is formed in the other side of the driving wedge block mounting groove, a small compression spring mounting groove I is formed in one end of the driving wedge block, one end of the small compression spring is mounted in the small compression spring mounting groove II, and the other end of the small compression spring is mounted in the small compression spring mounting groove I; the micro head is in interference fit with the side wall round hole;
the driven wedge block comprises a driven wedge block section and a cylinder, the driven wedge block section is arranged in a driven wedge block mounting groove, the cylinder penetrates through a compression spring mounting groove and is fixedly connected with an upper dovetail groove block through an inner hexagon screw, and the compression spring is tightly attached to the cylinder;
the wedge angles of the driving wedge block and the driven wedge block are 5.71 degrees, namely the ratio of the vertical height to the horizontal length of the wedge surface of the driving wedge block is 0.1, and the ratio of the vertical height to the horizontal length of the wedge surface of the driven wedge block is also 0.1; the roughness values of the wedge surface of the driving wedge block and the wedge surface of the driven wedge block are smaller than or equal to 0.4 mu m;
the elastic modulus of the material of the substitute is larger than that of the sheet-shaped workpiece, and the substitute adopts sapphire and alumina ceramics.
2. The novel mechanical grinding clamp with adjustable micro grinding thickness as set forth in claim 1, wherein: the number of the sheet-shaped workpieces is five.
3. A novel mechanical grinding clamp with adjustable micro grinding thickness as set forth in claim 1 or 2, wherein: the surface of the substitute is provided with a fine runner, and the fine runner is a straight micro runner or a cross micro runner.
4. The novel mechanical grinding clamp with adjustable micro grinding thickness as set forth in claim 1, wherein: the precision of the differential head is 5 mu m, and the measuring range is 6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810466248.5A CN108466168B (en) | 2018-05-16 | 2018-05-16 | Novel mechanical grinding clamp with adjustable micro grinding thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810466248.5A CN108466168B (en) | 2018-05-16 | 2018-05-16 | Novel mechanical grinding clamp with adjustable micro grinding thickness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108466168A CN108466168A (en) | 2018-08-31 |
| CN108466168B true CN108466168B (en) | 2024-04-12 |
Family
ID=63261230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810466248.5A Active CN108466168B (en) | 2018-05-16 | 2018-05-16 | Novel mechanical grinding clamp with adjustable micro grinding thickness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108466168B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109108823A (en) * | 2018-10-11 | 2019-01-01 | 梯伦豪斯机械（上海）有限公司 | Grinding head more changing device and centreless grinding Superfinishing machine equipped with the device |
| CN111451928A (en) * | 2020-05-15 | 2020-07-28 | 中国科学院微电子研究所 | Polishing head and polishing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203509628U (en) * | 2013-10-30 | 2014-04-02 | 宁波勋辉电器有限公司 | Novel tooling fixture for gearbox |
| CN105773192A (en) * | 2014-12-22 | 2016-07-20 | 重庆宝爵机械设备有限公司 | Wedged workpiece fixture |
| CN107030501A (en) * | 2017-04-28 | 2017-08-11 | 南京工业职业技术学院 | A kind of wedge clamping device |
| CN206632677U (en) * | 2016-12-27 | 2017-11-14 | 廊坊市北方天宇机电技术有限公司 | A kind of fixture with auto-lock function that can be used in a liquid |
| CN208323055U (en) * | 2018-05-16 | 2019-01-04 | 浙江工业大学 | A kind of adjustable novel mechanical attrition process fixture of trace grinding thickness |
-
2018
- 2018-05-16 CN CN201810466248.5A patent/CN108466168B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203509628U (en) * | 2013-10-30 | 2014-04-02 | 宁波勋辉电器有限公司 | Novel tooling fixture for gearbox |
| CN105773192A (en) * | 2014-12-22 | 2016-07-20 | 重庆宝爵机械设备有限公司 | Wedged workpiece fixture |
| CN206632677U (en) * | 2016-12-27 | 2017-11-14 | 廊坊市北方天宇机电技术有限公司 | A kind of fixture with auto-lock function that can be used in a liquid |
| CN107030501A (en) * | 2017-04-28 | 2017-08-11 | 南京工业职业技术学院 | A kind of wedge clamping device |
| CN208323055U (en) * | 2018-05-16 | 2019-01-04 | 浙江工业大学 | A kind of adjustable novel mechanical attrition process fixture of trace grinding thickness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108466168A (en) | 2018-08-31 |
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