CN112091687A - Fixing clamp for numerical control machine tool - Google Patents
Fixing clamp for numerical control machine tool Download PDFInfo
- Publication number
- CN112091687A CN112091687A CN202011122663.2A CN202011122663A CN112091687A CN 112091687 A CN112091687 A CN 112091687A CN 202011122663 A CN202011122663 A CN 202011122663A CN 112091687 A CN112091687 A CN 112091687A
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- China
- Prior art keywords
- plate
- fixing
- machine tool
- control machine
- numerical control
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a fixing clamp for a numerical control machine tool, which comprises a fixing plate, wherein a supporting plate and a connecting plate are arranged on the front side of the fixing plate, the fixing plate is fixedly connected with the supporting plate through screws, the connecting plate is positioned between the fixing plate and the supporting plate, the connecting plate is in sliding connection with the fixing plate through a sliding groove, two connecting rods are symmetrically arranged on the lower side of the connecting plate, two fixing rods are symmetrically arranged on the supporting plate, one ends of the fixing rods are inserted into the supporting plate, the bottom ends of the fixing rods are in pin connection with the connecting rods through pin shafts, springs and connecting seats are arranged at the upper ends of the fixing rods, the springs are positioned on the lower side of the connecting seats. Compared with the traditional fixing clamp for the numerical control machine tool, the invention completes the fixing of the workpiece by arranging the pressing plate which can move up and down and the fixed backing plate which are both detachable, is convenient to replace and effectively improves the processing efficiency.
Description
Technical Field
The invention relates to the technical field of machine tool fixtures, in particular to a fixing fixture for a numerical control machine tool.
Background
On a numerically controlled machine tool, a fixture is one of the more important components. Most of the existing numerical control machine tool clamps are fixed and do not have adjusting capability, when different workpieces are machined, only different clamps can be replaced, the clamps are mainly fixed on the numerical control machine tool through screws, the replacement is very troublesome, and the machining efficiency is seriously influenced. In addition, the conventional jig tends to be unwieldy in the face of workpieces of different shapes, particularly special-shaped pieces, and tends to pay less attention to positioning in the horizontal direction when positioning the workpiece, and if the force of the cutter in the horizontal direction is too large, a certain fixing force is required for horizontal positioning of the workpiece.
Therefore, we propose a fixing clamp for a numerical control machine tool to solve the above problems.
Disclosure of Invention
The invention aims to provide a fixing clamp for a numerical control machine tool, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a fixing clamp for a numerical control machine tool comprises a fixing plate, wherein a supporting plate and a connecting plate are arranged on the front side of the fixing plate, the fixing plate is fixedly connected with the supporting plate through screws, the connecting plate is arranged between the fixing plate and the supporting plate, the connecting plate is in sliding connection with the fixing plate through a sliding groove, two connecting rods are symmetrically arranged on the lower side of the connecting plate, two fixing rods are symmetrically arranged on the supporting plate, one ends of the fixing rods are inserted into the supporting plate, the bottom ends of the fixing rods are in pin joint with the connecting rods through pin shafts, springs and connecting seats are arranged at the upper ends of the fixing rods, the springs are arranged on the lower side of the connecting seats, the springs and the connecting seats are both sleeved on the fixing rods, a pressing plate is welded on one side of the connecting seats, fixing nuts are, the upper end of the fixed plate is provided with an air cylinder, and a piston rod of the air cylinder is fixedly connected with the connecting plate.
Preferably, the back of the fixing plate is provided with a connecting column, and the connecting column is provided with a screw fixing hole.
Preferably, the connecting plate is L-shaped, and a T-shaped sliding block is arranged at the back of the connecting plate.
Preferably, the supporting plate and the fixing plate are perpendicular to each other, and an opening corresponding to the connecting plate is formed in the back of the supporting plate.
Preferably, one end of the connecting rod is in threaded connection with the connecting plate through a thread groove, and the other end of the connecting rod is provided with a pin hole.
Preferably, the bottom of dead lever is equipped with the jack that is used for fixed link, and the top of dead lever is equipped with the screw thread fixed column.
Preferably, the clamping blocks are symmetrically arranged on two sides of the supporting plate, and the clamping blocks are in an L shape.
Preferably, the fixing plate is provided with a fixing groove for fixing the cylinder, and the fixing groove is fixedly connected with the cylinder through a screw.
Preferably, two pressing plates are provided with pressing blocks, the pressing blocks are provided with threaded through holes arranged in a matrix, a screw rod is rotatably arranged in the threaded through holes, the bottom end of the screw rod is provided with an open slot, a joint block is movably arranged in the open slot, the top end of the joint block is provided with a pressure spring, the pressure spring is arranged in the open slot at the bottom end of the screw rod, a lower pressing rod is movably arranged at the bottom end of the joint block positioned at the inner ring, and the bottom end of the lower pressing rod is coated with a rubber sleeve; be located the outer lane splice piece bottom movable mounting has lower spliced pole, the medial surface rotation of spliced pole sets up the side lever down, the downside of side lever through the extension spring with the spliced pole is connected down, side lever rotation angle is 0 to 90 degrees, the outer end cladding of side lever has the gum cover.
Preferably, the side bars are extension bars.
Compared with the prior art, the invention has the beneficial effects that: the workpiece clamping device is provided with the fixing plate with the supporting plate and the connecting plate, the connecting plate is provided with the connecting rod, the supporting plate is provided with the fixing rod, one end of the fixing rod is connected with the connecting rod, the other end of the fixing rod is fixedly provided with the pressing plate, the connecting plate can be pushed to move downwards through the air cylinder so as to drive the fixing rod and the pressing plate to move downwards to clamp a workpiece, the backing plate plays a role of limiting the workpiece, the limiting bulge matched with the workpiece is arranged on the backing plate, the backing plate is clamped with the supporting plate through the clamping block, the replacement is convenient, the pressing plate is fixed on the connecting seat, the connecting seat is sleeved on the fixing rod and locked through the fixing nut, different pressing plates and backing plates are used for fixing different workpieces, and when the pressing plate needs. Compared with the traditional fixing clamp for the numerical control machine tool, the invention completes the fixing of the workpiece by arranging the pressing plate which can move up and down and the fixed backing plate which are both detachable, is convenient to replace and effectively improves the processing efficiency.
Drawings
FIG. 1 is a side view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a top view of the support plate of the present invention;
FIG. 4 is a side view of the web of the present invention;
fig. 5 is a partially enlarged view of a portion a in fig. 2.
In the figure: 1. a fixing plate; 2. a support plate; 3. a connecting plate; 4. a connecting rod; 5. fixing the rod; 6. an opening; 7. a spring; 8. a connecting seat; 9. pressing a plate; 10. fixing a nut; 11. a base plate; 12. a clamping block; 13. a cylinder; 14. connecting columns; 15. a T-shaped slider; 16. fixing grooves; 17. briquetting; 18. a screw; 19. a joint block; 20. a pressure spring; 21. a lower pressure lever; 22. a rubber sleeve; 23. a lower connecting column; 24. a side lever; 25. a tension spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the invention provides a fixing clamp for a numerical control machine tool, comprising a fixing plate 1, a supporting plate 2 and a connecting plate 3 are arranged on the front side of the fixing plate 1, the fixing plate 1 and the supporting plate 2 are fixedly connected through screws, the connecting plate 3 is positioned between the fixing plate 1 and the supporting plate 2, the connecting plate 3 is slidably connected with the fixing plate 1 through a chute, two connecting rods 4 are symmetrically arranged on the lower side of the connecting plate 3, two fixing rods 5 are symmetrically arranged on the supporting plate 2, one end of each fixing rod 5 is inserted into the supporting plate 2, the bottom end of each fixing rod 5 is connected with the corresponding connecting rod 4 through a pin shaft, a spring 7 and a connecting seat 8 are arranged at the upper end of each fixing rod 5, the spring 7 is positioned on the lower side of the connecting seat 8, the spring 7 and the connecting seat 8 are both sleeved on the fixing, the upside of backup pad 2 is equipped with backing plate 11, and backing plate 11 passes through fixture block 12 and backup pad 2 joint, and the upper end of fixed plate 1 is equipped with cylinder 13, and the piston rod and the connecting plate 3 fixed connection of cylinder 13 are equipped with spacing arch or spacing recess that agree with mutually with the work piece on backing plate 11, and different clamp plate 9 and backing plate 11 are used for fixing the work piece of difference.
The back of the fixed plate 1 is provided with a connecting column 14, the connecting column 14 is provided with a screw fixing hole, and the fixed plate 1 is fixed on the machine tool through the connecting column 14. The connecting plate 3 is L-shaped, and a T-shaped sliding block 15 is arranged at the back of the connecting plate 3. The supporting plate 2 and the fixing plate 1 are arranged perpendicular to each other, and the back of the supporting plate 2 is provided with an opening 6 corresponding to the connecting plate 3. One end of the connecting rod 4 is in threaded connection with the connecting plate 3 through a thread groove, and the other end of the connecting rod 4 is provided with a pin hole. The bottom of dead lever 5 is equipped with the jack that is used for fixed link 4, and the one end of connecting rod 4 is pegged graft on dead lever 5 during the installation, and the top of dead lever 5 is equipped with the screw fixation post, and the screw fixation post is used for fixing fixation nut 10. The clamping blocks 12 are symmetrically arranged on two sides of the supporting plate 2, the clamping blocks 12 are L-shaped, the lower end of the backing plate 11 is provided with a T-shaped base, and the clamping blocks are directly inserted between the two clamping blocks 12 during fixing. Be equipped with the fixed slot 16 that is used for fixed cylinder 13 on the fixed plate 1, and fixed slot 16 passes through screw and cylinder 13 fixed connection, during the installation with cylinder 13 peg graft in fixed slot 16 and through screw locking can.
For a better understanding of the present invention by those of ordinary skill in the art, the operation of the present invention will be briefly described with reference to the accompanying drawings in which: by arranging a fixing plate 1 with a supporting plate 2 and a connecting plate 3, the connecting plate 3 is provided with a connecting rod 4, a fixed rod 5 is arranged on the supporting plate 2, one end of the fixed rod 5 is connected with the connecting rod 4, the other end is fixed with a pressing plate 9, the connecting plate 3 can be pushed to move downwards through an air cylinder 13, thereby driving the fixed rod 5 and the pressing plate 9 to move downwards to clamp the workpiece, the backing plate 11 plays a role of limiting the workpiece, the limiting bulge matched with the workpiece is arranged on the backing plate 11, the backing plate 11 is clamped with the supporting plate 2 through the clamping block 12, the replacement is convenient, the pressing plate 9 is fixed on the connecting seat 8, the connecting seat 8 is sleeved on the fixed rod 5 and locked through the fixing nut 10, different pressing plates 9 and backing plates 11 are used for fixing different workpieces, when the pressing plate 9 needs to be replaced, the fixing nut 10 is unscrewed, and then the connecting seat 8 is replaced.
Preferably, the two pressing plates 9 are provided with pressing blocks 17, the pressing blocks 17 are provided with threaded through holes arranged in a matrix, the threaded through holes are internally provided with screws 18 in a rotating mode, the number of the threaded through holes is large, at least three rows and at least three rows of threaded through holes need to be used for surrounding two rings, the number of the threaded through holes is large, and the types of fixing of the special-shaped workpieces can be completed are large. An open slot is formed in the bottom end of the screw rod 18, a joint block 19 is movably arranged in the open slot, a pressure spring 20 is arranged at the top end of the joint block 19, the pressure spring 20 is arranged in the open slot in the bottom end of the screw rod 18, and the joint block 19 can reciprocate in the open slot of the screw rod 18. The lower pressing rods 21 are movably mounted at the bottom ends of the joint blocks 19 located on the inner ring, rubber sleeves 22 cover the bottom ends of the lower pressing rods 21, the workpieces are positioned by the plurality of lower pressing rods 21 together, the rubber sleeves 22 at the bottom ends of the lower pressing rods 21 can press the workpieces downwards by rotating the screw rods 18, and the pressure springs 20 play a role in buffering. When facing a special-shaped workpiece, the positions of the plurality of pressing rods 21 can be different from a horizontal plane so as to complete the pressing and positioning of the workpiece.
The bottom end of the joint block 19 positioned on the outer ring is movably provided with a lower connecting column 23, the inner side surface of the lower connecting column 23 is rotatably provided with a side rod 24, the lower side surface of the side rod 24 is connected with the lower connecting column 23 through a tension spring 25, the rotating angle of the side rod 24 is 0-90 degrees, and the outer end of the side rod 24 is coated with a rubber sleeve 22. In the process of descending the press block 17, the outer ends of the side rods 24 correspond to the side faces of the workpiece, the side rods 24 rotate upwards, and the tension springs 25 give downward acting force to the side rods 24, so that acting force is given to the side faces of the workpiece, and clamping of the workpiece is completed. The side bar 24 positions and fixes the side surface of the workpiece. The workpiece is prevented from moving in the horizontal direction in the moving and processing process. The side bar 24 is rotated through an angle of 0 to 90 degrees, and the purpose of the side bar 24 is to provide a horizontal force to the workpiece as well as a downward force to the workpiece during use. Preferably, the side rods 24 are elongated rods, and this design can reduce the number of side rods 24 and also reduce the number of threaded through holes.
The preferred commissioning procedure is: placing the sample piece on the backing plate 11, enabling the pressing block 17 on the pressing plate 9 to be close to the workpiece, selecting a proper joint block 19 to install the lower connecting column 23, ensuring that the distance between the lower connecting column 23 and the side surface of the workpiece is less than the length of the side rod 24, then pressing the workpiece, continuing to enable the pressing block 17 to be close to the workpiece, fixing the horizontal direction of the workpiece by the side rod 24, and enabling the side rod 24 to have a certain downward pressure on the workpiece; then, the plurality of screw rods 18 are adjusted, so that the rubber sleeve 22 at the bottom end of the lower pressing rod 21 presses the special-shaped workpiece, and the workpiece is fixed in the vertical direction. And reversely controlling the pressing block 17 to ascend to finish the debugging of the clamp. Subsequently, the workpiece is placed on the backing plate 11 to complete the fixing.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a mounting fixture for digit control machine tool, includes fixed plate (1), its characterized in that: the front side of the fixed plate (1) is provided with a supporting plate (2) and a connecting plate (3), the fixed plate (1) is fixedly connected with the supporting plate (2) through screws, the connecting plate (3) is positioned between the fixed plate (1) and the supporting plate (2), the connecting plate (3) is in sliding connection with the fixed plate (1) through a sliding chute, the lower side of the connecting plate (3) is symmetrically provided with two connecting rods (4), the supporting plate (2) is symmetrically provided with two fixing rods (5), one ends of the fixing rods (5) are inserted into the supporting plate (2), the bottom ends of the fixing rods (5) are in pin joint with the connecting rods (4) through pin shafts, the upper end of each fixing rod (5) is provided with a spring (7) and a connecting seat (8), the spring (7) is positioned on the lower side of the connecting seat (8), and the spring (7) and the connecting seat (8) are both sleeved on, one side welding of connecting seat (8) has clamp plate (9), the top of dead lever (5) is equipped with fixation nut (10), the upside of backup pad (2) is equipped with backing plate (11), and backing plate (11) pass through fixture block (12) and backup pad (2) joint, the upper end of fixed plate (1) is equipped with cylinder (13), and the piston rod and connecting plate (3) fixed connection of cylinder (13).
2. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: the back of the fixing plate (1) is provided with a connecting column (14), and the connecting column (14) is provided with a screw fixing hole.
3. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: the connecting plate (3) is L-shaped, and a T-shaped sliding block (15) is arranged at the back of the connecting plate (3).
4. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: the supporting plate (2) and the fixing plate (1) are perpendicular to each other, and an opening (6) corresponding to the connecting plate (3) is formed in the back of the supporting plate (2).
5. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: one end of the connecting rod (4) is in threaded connection with the connecting plate (3) through a thread groove, and the other end of the connecting rod (4) is provided with a pin hole.
6. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: the bottom of dead lever (5) is equipped with the jack that is used for fixed link (4), and the top of dead lever (5) is equipped with the screw thread fixing post.
7. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: the clamping blocks (12) are symmetrically arranged on two sides of the supporting plate (2), and the clamping blocks (12) are L-shaped.
8. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: the fixing plate (1) is provided with a fixing groove (16) used for fixing the air cylinder (13), and the fixing groove (16) is fixedly connected with the air cylinder (13) through a screw.
9. The stationary fixture for a numerical control machine tool according to claim 1, characterized in that: pressing blocks (17) are arranged on the two pressing plates (9), threaded through holes arranged in a matrix are formed in the pressing blocks (17), a screw rod (18) is arranged in the threaded through holes in a rotating mode, an open slot is formed in the bottom end of the screw rod (18), a joint block (19) is movably arranged in the open slot, a pressure spring (20) is arranged at the top end of the joint block (19), the pressure spring (20) is arranged in the open slot in the bottom end of the screw rod (18), a lower pressing rod (21) is movably arranged at the bottom end of the joint block (19) located in the inner ring, and the bottom end of the lower pressing rod (21) is coated with a rubber; be located the outer lane joint piece (19) bottom movable mounting has down spliced pole (23), the medial surface of spliced pole (23) is rotatory to set up side lever (24) down, the downside of side lever (24) through extension spring (25) with spliced pole (23) are connected down, side lever (24) rotation angle is 0 to 90 degrees, the outer end cladding of side lever (24) has gum cover (22).
10. The stationary fixture for a numerical control machine tool according to claim 9, characterized in that: the side rods (24) are extension rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122663.2A CN112091687A (en) | 2020-10-20 | 2020-10-20 | Fixing clamp for numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122663.2A CN112091687A (en) | 2020-10-20 | 2020-10-20 | Fixing clamp for numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112091687A true CN112091687A (en) | 2020-12-18 |
Family
ID=73785463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011122663.2A Withdrawn CN112091687A (en) | 2020-10-20 | 2020-10-20 | Fixing clamp for numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112091687A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399712A (en) * | 2021-05-19 | 2021-09-17 | 广东职业技术学院 | Clamp and lathe |
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| CN104175142A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Drilling clamp for pump body of clutch master pump |
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| CN208736901U (en) * | 2018-08-08 | 2019-04-12 | 东莞市点精电子有限公司 | A kind of fixture for PCBA test |
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| CN209110636U (en) * | 2018-11-08 | 2019-07-16 | 青岛雷默精密设备有限公司 | A kind of auto parts and components clamp for machining |
| CN209830926U (en) * | 2019-01-28 | 2019-12-24 | 河北工业职业技术学院 | Special-shaped valve fixture |
| CN210938247U (en) * | 2019-09-09 | 2020-07-07 | 运城市大恒汽车配件制造有限公司 | Clamping device for machining automobile part mold |
| CN111438651A (en) * | 2020-05-15 | 2020-07-24 | 珠海东方重工有限公司 | Movable U-rib assembling machine |
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2020
- 2020-10-20 CN CN202011122663.2A patent/CN112091687A/en not_active Withdrawn
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|---|---|---|---|---|
| DE202013002889U1 (en) * | 2013-03-20 | 2013-04-18 | Rainer Förster | United welder |
| CN104175142A (en) * | 2014-07-19 | 2014-12-03 | 芜湖恒坤汽车部件有限公司 | Drilling clamp for pump body of clutch master pump |
| CN106334961A (en) * | 2016-11-09 | 2017-01-18 | 翎创机电（上海）有限公司 | Shape Adjusting Tool |
| CN206519767U (en) * | 2017-02-21 | 2017-09-26 | 东莞市民特英电子有限公司 | One kind can timesharing clamp system |
| CN107877345A (en) * | 2017-11-28 | 2018-04-06 | 桂阳磊腾新材料科技有限公司 | A kind of adjustable artificial quartz burnishing device |
| CN108333392A (en) * | 2017-12-14 | 2018-07-27 | 海安睿华纺织科技有限公司 | A kind of installing engineering of city electricity electric power detection device and its application method |
| CN108098415A (en) * | 2018-02-05 | 2018-06-01 | 胡忠梁 | A kind of building material machining workbench automatic fastening device |
| CN207858156U (en) * | 2018-02-14 | 2018-09-14 | 荆州市智翔机械科技股份有限公司 | A kind of auto parts processing retaining clip tool |
| CN208736901U (en) * | 2018-08-08 | 2019-04-12 | 东莞市点精电子有限公司 | A kind of fixture for PCBA test |
| CN209110636U (en) * | 2018-11-08 | 2019-07-16 | 青岛雷默精密设备有限公司 | A kind of auto parts and components clamp for machining |
| CN109676408A (en) * | 2018-12-25 | 2019-04-26 | 陕西东方航空仪表有限责任公司 | Modular board class part processing clamp |
| CN209830926U (en) * | 2019-01-28 | 2019-12-24 | 河北工业职业技术学院 | Special-shaped valve fixture |
| CN210938247U (en) * | 2019-09-09 | 2020-07-07 | 运城市大恒汽车配件制造有限公司 | Clamping device for machining automobile part mold |
| CN111438651A (en) * | 2020-05-15 | 2020-07-24 | 珠海东方重工有限公司 | Movable U-rib assembling machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113399712A (en) * | 2021-05-19 | 2021-09-17 | 广东职业技术学院 | Clamp and lathe |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201218 |