CN211071478U - Clamping structure of lower punch of stamping device - Google Patents
Clamping structure of lower punch of stamping device Download PDFInfo
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- CN211071478U CN211071478U CN201922151348.1U CN201922151348U CN211071478U CN 211071478 U CN211071478 U CN 211071478U CN 201922151348 U CN201922151348 U CN 201922151348U CN 211071478 U CN211071478 U CN 211071478U
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Abstract
The utility model provides a clamping structure of stamping device lower punch belongs to stamping equipment technical field. The problem that the central axis of a clamping structure of the existing lower punch is not aligned is solved. The clamping structure of the lower punch of the punching device comprises a locking nut, a chuck and a connecting cylinder positioned in the punching device, wherein the bottom of the chuck is embedded into the connecting cylinder, the locking nut is sleeved outside the chuck and can enable the chuck to be fixedly connected with the connecting cylinder through the locking nut, the top of the chuck is provided with a plurality of buffer grooves extending towards the bottom of the chuck, and the bottom of each buffer groove is outwards expanded to form a buffer hole. The clamping structure of the lower punch of the stamping device has the advantage of improving the processing precision.
Description
Technical Field
The utility model belongs to the technical field of stamping equipment, a clamping structure of stamping device lower punch is related to.
Background
In the production and processing process of products, punching equipment is required to be used, punches are fixedly connected to the punching equipment, and some punching equipment also comprises an upper punch and a lower punch, and the products are punched through the cooperation of the upper punch and the lower punch, so that the processes of punching, punching marks and the like are realized.
For example, chinese patent literature discloses a clamping structure of a lower punch of a punching apparatus [ application No.: 201821773876. X; authorization notice number: CN208928990U ], the clamping structure of this stamping equipment lower punch includes the fixed cylinder, the chuck, a positioning cylinder and lock nut, the lateral wall at chuck top is for being conical first inclined plane, the lateral wall of chuck bottom is for being conical second inclined plane, the top of chuck has first fluting, the bottom of chuck has the second fluting, the positioning cylinder is worn to establish in the fixed cylinder and positioning cylinder and fixed cylinder circumference location, it is conical third inclined plane to have on the inside wall at positioning cylinder top, the bottom of chuck stretches into in the top of positioning cylinder and the second inclined plane supports and leans on the third inclined plane, the top of chuck is arranged in lock nut, link firmly mutually through lock nut and the top of positioning cylinder and make the chuck fix in positioning cylinder and lock nut, lock nut supports and leans on the fixed cylinder.
This kind of clamping structure has the constant head tank of recessed setting on the lateral wall of a location section of thick bamboo, has the fixed orifices that runs through the lateral wall in the solid fixed cylinder, passes the fixed orifices through the round pin axle and wears to establish and make a location section of thick bamboo and solid fixed cylinder circumference location in the constant head tank, and a location section of thick bamboo and solid fixed cylinder are split type, and the assembly links firmly the back, has the problem in clamping clearance between a location section of thick bamboo and the solid fixed cylinder, leads to the skew mounted position who sets for of lower punch, reduces the machining precision. Meanwhile, the sizes of the inner ends of the first open groove and the second open groove of the clamping structure are the same as those of the rest parts, when the clamping head is pressed to clamp the punch, the clamping head can deform to a certain degree, the buffer amount of the inner ends of the first open groove and the second open groove is limited, and the inner ends of the first open groove and the second open groove are broken, so that the machining precision is reduced.
Disclosure of Invention
The utility model aims at the above-mentioned problem that exists among the prior art, provide a clamping structure of stamping device lower punch, the technical problem of solution is how to improve the machining precision.
The purpose of the utility model can be realized by the following technical proposal: the utility model provides a clamping structure of stamping device lower punch, includes lock nut and chuck, its characterized in that, clamping structure still includes the connecting cylinder of location in stamping device, the bottom of chuck is embedded into in the connecting cylinder, lock nut overlaps outside the chuck, and passes through lock nut enables chuck and connecting cylinder and links firmly mutually, the top of chuck has the dashpot that a plurality of extends to the chuck bottom, the outside expansion in bottom of dashpot forms the buffering hole.
The connecting cylinder is the integral type, does not have the problem of fit-up gap, and for split type, the centrality is better to improve stamping device's machining precision. The punch is installed downwards from the top of the chuck, so that the buffer groove extending from the top of the chuck to the bottom of the chuck is arranged, and the chuck is simple in structure. When the punch is installed, the locking nut can drive the chuck to contract inwards to compress the punch, the end part of the bottom end of the buffer slot bears internal stress, the stress is dispersed through the buffer hole, a better buffer effect is achieved, the chuck cannot crack in the position, and therefore the positioning precision of the punch is improved, and finally the machining precision of the punching device is improved.
In the clamping structure of foretell stamping device lower punch, the connecting cylinder includes the main part, the outside protrusion setting in middle part of main part forms the location and keeps off the shoulder, is located the wall thickness of the main part of location fender shoulder top is less than the wall thickness of the main part that is located location fender shoulder below, is located have on the lateral wall of the main part of location fender shoulder top with lock nut matched with external screw thread. The connecting cylinder is placed in a positioning hole of the stamping device, the positioning shoulder abuts against the connecting cylinder to realize positioning of the connecting cylinder, the positioning shoulder plays a role in positioning and fixing, and the positioning is simple; the wall thickness of main part top is less than the wall thickness of main part below, for lock nut's installation vacation space, the rational utilization space.
In the clamping structure of the lower punch of the stamping device, the outer side wall of the chuck is provided with a step surface which protrudes outwards, and the top of the connecting cylinder is abutted against the step surface. The structure enables the chuck to be installed in place, improves the firm degree of chuck positioning, prevents the chuck from shaking after being installed, and improves the processing precision of the punching device.
In the clamping structure of the lower punch of the punching device, the outer side wall of the chuck is also provided with the obliquely arranged pressing surface, the edge of the bottom end of the pressing surface is connected with the edge of the outer side of the step surface, the inner side wall of the lock nut is provided with the pressing part which is arranged to protrude inwards, and the pressing part is pressed on the pressing surface. This kind of structure improves the firm degree of chuck location, makes simultaneously that the chuck can be better carry the drift, can not appear the problem of rocking after making the chuck installation, improves the centrality of drift, improves stamping device's machining precision.
In the clamping structure of the lower punch of the punching device, the buffer grooves are arranged at equal intervals along the axial direction of the chuck, and the number of the buffer grooves is 3-8.
Compared with the prior art, the utility model provides a clamping structure of stamping device lower punch has following advantage:
1. the connecting cylinder of the clamping structure is integrated, the problem of assembly clearance does not exist, and the concentricity is better compared with a split type connecting cylinder, so that the processing precision of the stamping device is improved.
2. This clamping structure is through setting up the buffer hole and come the dispersed stress, plays better cushioning effect, makes this department of chuck can not appear the crack, improves the positioning accuracy of drift, improves the centrality of drift, finally improves stamping device's machining precision.
Drawings
Fig. 1 is an overall structural sectional view of a clamping structure of a lower punch of the punching device.
Fig. 2 is a schematic view of the entire structure of the lower punch of the punching device after installation.
Fig. 3 is a schematic overall structure diagram of the lower punch clamping structure chuck of the punching device.
In the figure, 1, a lock nut; 11. a pressing part; 2. a chuck; 21. a step surface; 22. a compression surface; 3. a connecting cylinder; 31. a main body; 32. positioning the shoulder; 4. a buffer tank; 5. and a buffer hole.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the clamping structure of the lower punch of the punching device comprises a locknut 1, a chuck 2 and a connecting cylinder 3.
The connecting cylinder 3 comprises a main body 31, the middle part of the main body 31 protrudes outwards to form a positioning shoulder 32, the wall thickness of the main body 31 above the positioning shoulder 32 is smaller than that of the main body 31 below the positioning shoulder 32, and the outer side wall of the main body 31 above the positioning shoulder 32 is provided with an external thread matched with the locking nut 1. The inner side wall of the locking nut 1 is provided with a pressing part 11 which is arranged to protrude inwards, and the inner side wall of the locking nut 1 is also provided with an internal thread.
As shown in fig. 3, the outer side wall of the chuck 2 is provided with a step surface 21 protruding outwards, the outer side wall of the chuck 2 is further provided with a pressing surface 22 arranged obliquely, and the edge of the bottom end of the pressing surface 22 is connected with the edge of the outer side of the step surface 21. The top of chuck 2 has the dashpot 4 that extends to chuck 2 bottom, and the bottom of dashpot 4 outwards expands and forms dashpot 5, and dashpot 4 sets up with dashpot 5 one-to-one, and the equidistant setting of axial of chuck 2 is followed to dashpot 4, and in this embodiment, the quantity of dashpot 4 is four, and in actual production, the quantity of dashpot 4 can be three or eight.
The bottom of chuck 2 is embedded into connecting cylinder 3, and lock nut 1 cover is outside chuck 2, and the pressure portion 11 is pressed on compressing tightly the face 22, and enables chuck 2 and connecting cylinder 3 to link firmly mutually through lock nut 1, and the top of connecting cylinder 3 supports and leans on step face 21.
During installation, the connecting cylinder 3 is placed in the punching device, the bottom of the chuck 2 is embedded into the connecting cylinder 3, the punch is embedded into the chuck 2, the locking nut 1 is sleeved on the punch, the pressing part 11 abuts against the pressing surface 22, then the locking nut 1 is rotated, and the chuck 2 contracts to lock the punch until the locking nut 1 cannot rotate.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the terms of the lock nut 1, the pressing portion 11, the collet 2, the step surface 21, the pressing surface 22, the connector barrel 3, the body 31, the positioning shoulder 32, the buffer groove 4, the buffer hole 5, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (5)
1. The utility model provides a clamping structure of stamping device lower punch, includes lock nut (1) and chuck (2), its characterized in that, clamping structure still includes connecting cylinder (3) of location in stamping device, during connecting cylinder (3) were embedded into to the bottom of chuck (2), lock nut (1) cover is outside chuck (2), and passes through lock nut (1) enables chuck (2) and connecting cylinder (3) and links firmly mutually, the top of chuck (2) has buffer slot (4) that a plurality of extended to chuck (2) bottom, the bottom of buffer slot (4) outwards expands and forms buffer hole (5).
2. The clamping structure of the lower punch of the punching device is characterized in that the connecting cylinder (3) comprises a main body (31), the middle part of the main body (31) protrudes outwards to form a positioning stop shoulder (32), the wall thickness of the main body (31) above the positioning stop shoulder (32) is smaller than that of the main body (31) below the positioning stop shoulder (32), and the outer side wall of the main body (31) above the positioning stop shoulder (32) is provided with an external thread matched with the locking nut (1).
3. The clamping structure of the lower punch of the punching device according to the claim 1 or 2, characterized in that the outer side wall of the clamping head (2) is provided with a step surface (21) which is convexly arranged outwards, and the top of the connecting cylinder (3) is abutted against the step surface (21).
4. The clamping structure of the lower punch of the punching device is characterized in that the outer side wall of the clamping head (2) is further provided with an obliquely arranged pressing surface (22), the edge of the bottom end of the pressing surface (22) is connected with the edge of the outer side of the step surface (21), the inner side wall of the locking nut (1) is provided with a pressing part (11) which protrudes inwards, and the pressing part (11) presses on the pressing surface (22).
5. The clamping structure of the lower punch of the punching device according to the claim 1 or 2, characterized in that the buffer grooves (4) are arranged at equal intervals along the axial direction of the chuck (2), and the number of the buffer grooves (4) is 3-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922151348.1U CN211071478U (en) | 2019-12-04 | 2019-12-04 | Clamping structure of lower punch of stamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922151348.1U CN211071478U (en) | 2019-12-04 | 2019-12-04 | Clamping structure of lower punch of stamping device |
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| Publication Number | Publication Date |
|---|---|
| CN211071478U true CN211071478U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922151348.1U Active CN211071478U (en) | 2019-12-04 | 2019-12-04 | Clamping structure of lower punch of stamping device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122475A (en) * | 2020-09-14 | 2020-12-25 | 嘉兴考普诺机械科技有限公司 | High-pressure-resistant stamping clamp |
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2019
- 2019-12-04 CN CN201922151348.1U patent/CN211071478U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112122475A (en) * | 2020-09-14 | 2020-12-25 | 嘉兴考普诺机械科技有限公司 | High-pressure-resistant stamping clamp |
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