CN117718780B - Adjustable clamping tool for machining special-shaped copper bush - Google Patents
Adjustable clamping tool for machining special-shaped copper bush Download PDFInfo
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- CN117718780B CN117718780B CN202410172290.1A CN202410172290A CN117718780B CN 117718780 B CN117718780 B CN 117718780B CN 202410172290 A CN202410172290 A CN 202410172290A CN 117718780 B CN117718780 B CN 117718780B
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- 241000227287 Elliottia pyroliflora Species 0.000 title claims abstract description 13
- 238000003754 machining Methods 0.000 title claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 5
- 125000003003 spiro group Chemical group 0.000 claims description 4
- 206010066054 Dysmorphism Diseases 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910021654 trace metal Inorganic materials 0.000 description 1
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Abstract
The invention discloses an adjustable clamping tool for processing a special-shaped copper bush, which comprises a base, wherein the bottom of the base is provided with a mounting mechanism, and the front side and the rear side of the top of the base are fixedly connected with side plates.
Description
Technical Field
The invention relates to the technical field of special-shaped copper sleeve machining, in particular to an adjustable clamping tool for special-shaped copper sleeve machining.
Background
Copper bush, also called copper axle sleeve, divide into multiple, including machine copper roller, copper bearing etc. is used in various light industry, large-scale, heavy machinery, is the important component on the machinery, and the product has traditional tin bronze bearing function, is used electrolytic copper as raw materials to join in marriage multiple trace metal element, through high temperature sintering, through the centrifugal casting processing of atmospheric pressure to get final product, hardness is high, the wearability is faltering, difficult production bites the dead phenomenon, has better castability and machinability, has good corrosion resistance in atmosphere and fresh water, under lack of lubricant and with aqueous lubricant condition, slidability and self-lubricating ability are good, easy cutting, the castability is poor, corrosion resistance to dilute sulfuric acid is good.
Because the copper bush uses the field extremely extensively, therefore, copper bush 'S shape and size are different according to equipment operation requirement, and common like U-shaped, S-shaped etc. current copper bush is when processing, and fixing tool is not ideal to its centre gripping effect, can't be applicable to the copper bush centre gripping of different shapes and sizes.
Disclosure of Invention
The invention solves the technical problem of overcoming the defects of the prior art and providing an adjustable clamping tool for processing a special-shaped copper sleeve.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a clamping tool with adjustable dysmorphism copper sheathing processing is with centre gripping frock, includes the base, the bottom of base is equipped with installation mechanism, both sides department all fixedly connected with curb plate around the top of base, and two be equipped with the screw thread cover that sets up about two between the curb plate, two the equal spiro union of inner chamber of screw thread cover has first threaded rod, two equal fixedly connected with has two bearings that set up about the curb plate, and two the rear end of first threaded rod is pegged graft respectively in adjacent bearing inner chamber, two the front end of first threaded rod runs through adjacent bearing inner chamber respectively to all fixed connection is in first hand wheel, two equal fixedly connected with riser in top of screw thread cover, and a plurality of screw hole has evenly been seted up from top to bottom, the inner chamber of any screw hole that is located both sides all spiro union has the screw thread post, and two the one end that the screw thread post kept away from all fixedly connected with first hand wheel, two the outer lateral wall of screw thread post all overlaps and is equipped with the annular, just the annular inside wall is provided with the internal thread, two annular splint the annular inner diameter is the annular pin array is the blind hole is drawn through the annular pin, and is arranged to the annular center pin is the annular pin array and is equipped with the annular pin, and is three blind hole's the annular pin is arranged in the annular center pin is connected with the annular center pin that is connected with the annular center of one side, and the annular locating pin is fixed with the annular pin is arranged, and the annular center pin is connected with the annular blind hole is arranged, a longitudinal clamping mechanism is arranged between the two side plates.
Preferably, the bottoms of the two threaded sleeves are fixedly connected with sliding plates, limit grooves matched with the sliding plates are formed in the positions, close to the left side and the right side, of the top of the base, and the bottoms of the two sliding plates are respectively inserted into inner cavities of the adjacent limit grooves.
Preferably, the mounting mechanism comprises two L-shaped plates, one sides of the two L-shaped plates are welded at the bottom of the base close to the left side and the right side respectively, and the upper surfaces of the two L-shaped plates are provided with two fixing holes which are arranged front and back.
Preferably, the vertical fixture includes two barrels, and two the barrel laminating sets up respectively in two curb plate adjacent one sides, two the equal fixedly connected with T shape slider in one side that the barrel kept away from mutually, two the T shape spout that matches each other with T shape slider is all seted up to the adjacent one side of curb plate, and two the inner chamber at adjacent T shape spout is slided respectively to T shape slider, two the equal fixedly connected with first spring in one side that the T shape slider kept away from mutually, just the other end of first spring and the inside wall fixed connection of adjacent T shape spout, two the equal sliding connection of inner chamber of barrel has the stopper, and two first perforation has all been seted up in barrel adjacent one side centre of a circle department, two first perforation inner chamber all runs through and is equipped with the telescopic link, just the one end and the stopper fixed connection of telescopic link, two the outside of telescopic link all overlaps and is equipped with the second spring, just the both ends of second spring respectively with barrel and stopper fixed connection, two the equal fixedly connected with rectangle splint of telescopic link one end, and two equal fixedly connected with rectangular splint are kept away from to one side of the equal fixedly connected with of baffle.
Preferably, rectangular slots are formed in the rectangular clamping plate, which is close to the left side and the right side, a supporting plate matched with the rectangular slots is arranged in a penetrating manner in an inner cavity of the rectangular slots on one side of the rectangular clamping plate, a movable plate is fixedly connected to one side, away from the center of the top of the base, of the supporting plate, second through holes are formed in the movable plate, which is close to the left side and the right side, of the rectangular clamping plate, fixing rods are arranged in the penetrating manner in the inner cavity of the second through holes, one ends of the fixing rods are fixedly connected with the rectangular clamping plate, the other ends of the fixing rods are fixedly connected with the fixing plates, third springs are sleeved on the outer sides of the fixing rods, and two ends of each third spring are fixedly connected with the movable plate and the fixing plate respectively.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the invention, the first hand-shaking wheel is rotated to drive the first threaded rod to rotate and drive the threaded sleeve to longitudinally move, so that the threaded columns can be driven to longitudinally move synchronously, the threaded columns can be driven to transversely move in the threaded hole inner cavity by rotating the second hand-shaking wheel, the second threaded rod can be rotated in the threaded blind hole inner cavity and three positioning pins with different sizes are rotationally switched by rotating the disc, so that the positioning pins can be inserted into the linear copper sleeve inner cavity after the two threaded columns transversely move, the linear copper sleeves with different aperture sizes are clamped and fixed by matching with the annular clamping plate, and the Z-shaped copper sleeve can be clamped and fixed by adjusting the vertical positions of the threaded columns in the threaded hole inner cavities on the vertical plate;
2. according to the invention, the first hand-shaking wheel is rotated to drive the first threaded rod to rotate, the two threaded sleeves are driven to longitudinally move to the side, away from the two rectangular clamping plates, of the two rectangular clamping plates, the two rectangular clamping plates are pushed to overcome the resistance of the adjacent first springs to be away from each other, the first hand-shaking wheel is rotated reversely, so that the two annular clamping plates are respectively attached to the adjacent position blocking plates, then, after the two first hand-shaking wheels are rotated again, the two rectangular clamping plates can be driven to relatively move against the resistance of the adjacent second springs, after the S-shaped or M-shaped copper sleeves are placed on the two supporting plates, the S-shaped or M-shaped copper sleeves can be clamped and fixed after the two rectangular clamping plates relatively move, and the applicability of the clamping tool to the clamping and fixing of the special-shaped copper sleeves is further improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a rectangular clamping plate of the component of the invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic top view of the component cartridge of the present invention;
FIG. 5 is a left side view of the component disk of the present invention;
Fig. 6 is an enlarged view at a in fig. 3.
Reference numerals in the drawings: 1. a base; 2. a side plate; 3. a thread sleeve; 4. a first threaded rod; 5. a first hand wheel; 6. a riser; 7. a threaded hole; 8. a threaded column; 9. a second rocking wheel; 10. an annular clamping plate; 11. an annular gasket; 12. a threaded blind hole; 13. a second threaded rod; 14. a disc; 15. a positioning pin; 16. a cylinder; 17. a rectangular clamping plate; 18. a limiting block; 19. a telescopic rod; 20. a second spring; 21. a supporting plate; 22. a movable plate; 23. rectangular slotting; 24. a bit blocking plate; 25. t-shaped sliding grooves; 26. a T-shaped slider; 27. a first spring; 28. an L-shaped plate; 29. a fixing hole; 30. a sliding plate; 31. a limit groove; 32. a fixed rod; 33. a fixing plate; 34. and a third spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
Referring to fig. 1-6, the present invention provides a technical solution: the utility model provides an adjustable centre gripping frock is used in dysmorphism copper sheathing processing, including base 1, the bottom of base 1 is equipped with installation mechanism, both sides department all fixedly connected with curb plate 2 around the top of base 1, and be equipped with the screw thread cover 3 that sets up about two curb plate 2, the bottom of two screw thread covers 3 all fixedly connected with sliding plate 30, the spacing groove 31 that matches each other with sliding plate 30 has all been seted up near left and right sides department in the top of base 1, and peg graft respectively in adjacent spacing groove 31 inner chamber in the bottom of two sliding plate 30, can vertically spacing screw thread cover 3, the equal spiro union of inner chamber of two screw thread covers 3 has first threaded rod 4, all fixedly connected with is controlled the bearing that sets up on two curb plate 2, and the rear end of two first threaded rod 4 peg graft respectively in adjacent bearing inner chamber, the front end of two first threaded rod 4 runs through adjacent bearing inner chamber respectively, the two thread sleeves 3 are fixedly connected with a vertical plate 6 at the top, a plurality of threaded holes 7 are uniformly formed in the vertical plate 6 from top to bottom, the inner cavity of any threaded hole 7 at two sides is in threaded connection with a threaded column 8, one end, far away from the threaded column 8, of each threaded column 8 is fixedly connected with a second hand wheel 9, the outer side walls of the two threaded columns 8 are sleeved with an annular clamping plate 10, the inner side walls of the annular clamping plates 10 are provided with internal threads, the two annular clamping plates 10 are in threaded connection with the adjacent threaded columns 8 through the internal threads, the adjacent sides of the two annular clamping plates 10 are fixedly connected with an annular gasket 11, one end of each threaded column 8 close to the center of the top of the base 1 is provided with a threaded blind hole 12, the inner cavity of each threaded blind hole 12 is in threaded connection with a second threaded rod 13, one end of each second threaded rod 13 extends to the outer side of each threaded blind hole 12 and is fixedly connected with a disc 14, the other side of the disc 14 is fixedly connected with three positioning pins 15, the three positioning pins 15 are arranged in a triangular array shape by taking the center of the disc 14 as the center, the outer diameter length of the three positioning pins 15 is in annular increasing arrangement, copper sleeves with different aperture sizes can be clamped and fixed, and a longitudinal clamping mechanism is arranged between the two side plates 2.
The mounting mechanism comprises two L-shaped plates 28, one sides of the two L-shaped plates 28 are welded at the bottom of the base 1 near the left side and the right side respectively, and two fixing holes 29 which are arranged front and back are formed in the upper surfaces of the two L-shaped plates 28.
The longitudinal clamping mechanism comprises two cylinders 16, the two cylinders 16 are respectively attached to one side adjacent to the two side plates 2, T-shaped sliding blocks 26 are fixedly connected to one sides, away from the two cylinders 16, of the two cylinders, T-shaped sliding grooves 25 matched with the T-shaped sliding blocks 26 are respectively formed in one side adjacent to the two side plates 2, the two T-shaped sliding blocks 26 are respectively and slidably connected to inner cavities of the adjacent T-shaped sliding grooves 25, first springs 27 are fixedly connected to one sides, away from the two T-shaped sliding blocks 26, of the other ends of the first springs 27 are fixedly connected with inner side walls of the adjacent T-shaped sliding grooves 25, limiting blocks 18 are respectively and slidably connected to the inner cavities of the two cylinders 16, first through holes are respectively formed in circle centers of the adjacent sides of the two cylinders 16, the inner cavities of the two first through holes are respectively provided with telescopic rods 19 in a penetrating mode, one ends of the telescopic rods 19 are fixedly connected with the limiting blocks 18, second springs 20 are respectively sleeved on the outer sides of the two telescopic rods 19, the two ends of the second spring 20 are fixedly connected with the cylinder 16 and the limiting block 18 respectively, the adjacent ends of the two telescopic rods 19 are fixedly connected with the rectangular clamping plates 17, the far sides of the two rectangular clamping plates 17 are fixedly connected with the blocking plates 24, rectangular grooves 23 are formed in the positions, close to the left side and the right side, of the rectangular grooves 23 on one side, supporting plates 21 matched with the rectangular grooves 23 are penetrated through the inner cavities of the rectangular grooves 23, one side, far from the center of the top of the base 1, of the supporting plates 21 is fixedly connected with a movable plate 22, the positions, close to the left side and the right side, of the movable plate 22 are respectively provided with a second perforation, the inner cavities of the second perforation are penetrated with fixing rods 32, one ends of the two fixing rods 32 are fixedly connected with the rectangular clamping plates 17, the other ends of the two fixing rods 32 are fixedly connected with fixing plates 33, the outer sides of the two fixing rods 32 are respectively sleeved with a third spring 34, and both ends of the third spring 34 are fixedly connected with the movable plate 22 and the fixed plate 33, respectively.
Working principle: when the invention is used, firstly, the clamping tool bolt can be fixed on a workpiece processing table through the arrangement of the L-shaped plate 28 and the fixing hole 29, the first hand-shaking wheel 5 is rotated to drive the first threaded rod 4 to rotate and drive the threaded sleeve 3 to longitudinally move, the threaded sleeve 3 can be longitudinally limited by longitudinally sliding the sliding plate 30 in the cavity of the limiting groove 31, so that the threaded column 8 can be driven to longitudinally move synchronously, the threaded column 8 can be driven to transversely move in the cavity of the threaded hole 7 by rotating the second hand-shaking wheel 9, so that the horizontal distance between the two threaded columns 8 can be regulated, the second threaded rod 13 is rotated in the cavity of the threaded blind hole 12 by rotating the disc 14 and the three positioning pins 15 with different sizes are rotationally switched, so that the positioning pins 15 can be inserted into the cavities of the wire-incoming copper sleeve after the two threaded columns 8 transversely move, the two annular clamping plates 10 are moved to the end parts of the adjacent ends of the two threaded columns 8, then the copper bush with larger inner diameter can be clamped and fixed, and after the first hand wheel 5 is rotated to drive the first threaded rod 4 to rotate and drive the two threaded sleeves 3 to longitudinally move to the side of the two rectangular clamping plates 17 away from each other, the two rectangular clamping plates 17 are pushed to overcome the resistance of the adjacent first springs 27 to be away from each other, and the first hand wheel 5 is reversely rotated, so that the two annular clamping plates 10 can be respectively attached to the adjacent position blocking plates 24, when the two first hand wheels 5 are rotated again, the two rectangular clamping plates 17 can be driven to relatively move against the resistance of the adjacent second springs 20, after the S-shaped or M-shaped copper sleeves are placed on the two supporting plates 21, the two rectangular clamping plates 17 can relatively move and then clamp and fix the S-shaped or M-shaped copper sleeves, and the applicability of the clamping fixture to clamping and fixing the special-shaped copper sleeves is further improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a centre gripping frock with adjustable dysmorphism copper sheathing processing, includes base (1), its characterized in that: the base (1) is provided with a mounting mechanism at the bottom, side plates (2) are fixedly connected to the front side and the rear side of the top of the base (1), two threaded sleeves (3) are arranged between the side plates (2), a first threaded rod (4) is evenly screwed into the inner cavities of the threaded sleeves (3), two bearings are fixedly connected to the side plates (2), two bearings are respectively inserted into the inner cavities of adjacent bearings at the rear ends of the first threaded rod (4), two front ends of the first threaded rod (4) respectively penetrate through the inner cavities of the adjacent bearings and are fixedly connected to first hand shaking wheels (5), two vertical plates (6) are fixedly connected to the top of the threaded sleeves (3), a threaded post (8) is evenly screwed into the inner cavities of any threaded hole (7) on two sides from top to bottom, one end, far away from the threaded post (8), of each second wheel (9) is fixedly connected to one end, far away from the threaded post (8), of each annular clamping plate (10) is provided with two annular clamping plates (10), two annular clamping plates (10) are connected with annular clamping plates (10), screw thread post (8) are close to one end at base (1) top center and have been seted up screw thread blind hole (12), just the inner chamber spiro union of screw thread blind hole (12) has second threaded rod (13), the one end of second threaded rod (13) extends to the outside of screw thread blind hole (12) to fixedly connected with disc (14), the opposite side fixedly connected with three locating pin (15) of disc (14), three locating pin (15) are triangle-shaped array form with the centre of a circle of disc (14) as the center and arrange, and three the external diameter length of locating pin (15) is annular increment setting, two be equipped with vertical fixture between curb plate (2).
2. The adjustable clamping tool for machining of the special-shaped copper bush according to claim 1, wherein the adjustable clamping tool is characterized in that: two the bottom of thread bush (3) all fixedly connected with sliding plate (30), limit groove (31) that matches each other with sliding plate (30) have all been seted up in the top of base (1) near left and right sides department, and two the bottom of sliding plate (30) is pegged graft respectively in adjacent limit groove (31) inner chamber.
3. The adjustable clamping tool for machining of the special-shaped copper bush according to claim 1, wherein the adjustable clamping tool is characterized in that: the mounting mechanism comprises two L-shaped plates (28), one sides of the two L-shaped plates (28) are welded at the left side and the right side of the bottom of the base (1) respectively, and two fixing holes (29) which are arranged front and back are formed in the upper surfaces of the two L-shaped plates (28).
4. The adjustable clamping tool for machining of the special-shaped copper bush according to claim 1, wherein the adjustable clamping tool is characterized in that: the vertical clamping mechanism comprises two cylinders (16), and two cylinders (16) are respectively attached to one side adjacent to two side plates (2), two T-shaped sliding blocks (26) are fixedly connected to one side, away from each other, of each cylinder (16), T-shaped sliding grooves (25) matched with the T-shaped sliding blocks (26) are respectively formed in one side adjacent to each other, the two T-shaped sliding blocks (26) are respectively and slidably connected to inner cavities of the adjacent T-shaped sliding grooves (25), first springs (27) are fixedly connected to one side, away from each other, of each T-shaped sliding block (26), the other end of each first spring (27) is fixedly connected with the inner side wall of each adjacent T-shaped sliding groove (25), limiting blocks (18) are fixedly connected to the inner cavities of each cylinder (16), first through holes are respectively formed in the circle centers of the adjacent sides of the cylinders (16), one ends of the telescopic rods (19) are fixedly connected with the inner cavities of the limiting blocks (18), the two ends of the two telescopic rods (19) are fixedly connected with the two limiting blocks (20), the two ends of each limiting block (20) are fixedly connected with the two adjacent rectangular sliding blocks (20), and the sides of the two rectangular clamping plates (17) which are far away from each other are fixedly connected with a blocking plate (24).
5. The adjustable clamping tool for machining the special-shaped copper bush according to claim 4, wherein the adjustable clamping tool is characterized in that: rectangular grooves (23) are formed in the rectangular clamping plate (17) close to the left side and the right side, supporting plates (21) matched with the rectangular grooves (23) are penetrated through the inner cavities of the rectangular grooves (23) on one side, the supporting plates (21) are far away from one side of the center of the top of the base (1) and fixedly connected with movable plates (22), second through holes are formed in the positions, close to the left side and the right side, of the movable plates (22), the second through holes are penetrated through the inner cavities, fixing rods (32) are formed in the second through holes, one ends of the fixing rods (32) are fixedly connected with the rectangular clamping plate (17), the other ends of the fixing rods (32) are fixedly connected with fixing plates (33), third springs (34) are sleeved on the outer sides of the fixing rods (32), and two ends of each third spring (34) are fixedly connected with the movable plates (22) and the fixing plates (33) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410172290.1A CN117718780B (en) | 2024-02-07 | 2024-02-07 | Adjustable clamping tool for machining special-shaped copper bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410172290.1A CN117718780B (en) | 2024-02-07 | 2024-02-07 | Adjustable clamping tool for machining special-shaped copper bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117718780A CN117718780A (en) | 2024-03-19 |
| CN117718780B true CN117718780B (en) | 2024-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410172290.1A Active CN117718780B (en) | 2024-02-07 | 2024-02-07 | Adjustable clamping tool for machining special-shaped copper bush |
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| CN (1) | CN117718780B (en) |
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| CN215317145U (en) * | 2021-06-03 | 2021-12-28 | 苏州天大通利高分子材料有限公司 | Fixing clamp for antenna housing production |
| CN215201625U (en) * | 2021-06-07 | 2021-12-17 | 昆山纽博尔钢模有限公司 | Die carrier profile shapes production line fixed clamping device |
| CN216633834U (en) * | 2021-11-18 | 2022-05-31 | 广东钡瑞家具制造有限公司 | Furniture processing is with plank curve processing equipment |
| CN218362196U (en) * | 2022-07-19 | 2023-01-24 | 吉林省洋洋不锈钢水箱有限公司 | Stainless steel perforating device for lining plastic stainless steel water tank |
| CN218800510U (en) * | 2022-07-26 | 2023-04-07 | 江西刀父科技有限公司 | Machine parts processes fixing device |
| CN115647850A (en) * | 2022-09-20 | 2023-01-31 | 江苏立一新材料科技有限公司 | Draw gear is used in processing of bearing copper sheathing |
| CN219443504U (en) * | 2023-04-13 | 2023-08-01 | 天津市福京机械有限公司 | Pin body fixing hole machining tool for cylindrical pin |
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| CN117718780A (en) | 2024-03-19 |
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