Rolling clamp

Abstract

The utility model relates to the field of bolt rolling, and provides a rolling clamp which comprises a base, a positioning cylinder, a spiral cylinder and a driving structure. By arranging the positioning cylinder and the spiral cylinder, a rolled bolt can be driven to rotate and advance according to a set spiral track under the pushing of the output shaft, so that the output shaft only stretches out and draws back, and the action is simple and efficient; meanwhile, a stepped hole is formed in the spiral cylinder, and a plurality of limiting pieces are arranged at the end part of the spiral cylinder, so that the rolled bolt can be clamped, and the axis is ensured not to deflect; meanwhile, the driving structure is arranged to be matched with the spiral barrel and the rolled bolt, it is guaranteed that the rolled bolt does not deviate in the radial direction, it is guaranteed that the rolled bolt can move synchronously with the driving structure and the spiral barrel, and the bolt can conduct set motion trail when the bolt is rolled; and meanwhile, by arranging the driving structure and the spiral cylinder, the rolled bolt can be quickly mounted and dismounted, the positioning time is greatly shortened, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of bolt rolling, in particular to a rolling fixture. Background Art

[0002] When a bolt is rolled, a fixture is needed to position the bolt. Generally, the existing bolt positioning fixtures adopt three-point positioning. When picking up and placing the workpiece to be rolled, the fixture needs to be adjusted at any time. Each adjustment takes some time, which will affect the processing efficiency. Moreover, if the three-point positioning is offset, the processing quality will be affected. Summary of the Utility Model

[0003] The utility model provides a rolling fixture. By setting a positioning cylinder and a spiral cylinder, the bolt to be rolled can be driven to rotate forward along a set spiral track under the push of an output shaft. Therefore, the output shaft only needs to perform telescopic actions, and the actions are simple and efficient. At the same time, by setting a stepped hole in the spiral cylinder and a plurality of limiting pieces at the end, the bolt to be rolled can be clamped to ensure that the axis will not be deflected. At the same time, a driving structure is provided to cooperate with the spiral cylinder and the bolt to be rolled, ensuring that the bolt to be rolled will not have a radial offset and ensuring that the bolt to be rolled can move synchronously with the driving structure and the spiral cylinder, meeting the requirement that the bolt can perform a set movement track when rolling the bolt. At the same time, by setting the driving structure and the spiral cylinder, the rapid installation and disassembly of the bolt to be rolled are satisfied, greatly reducing the positioning time and effectively improving the work efficiency.

[0004] The technical solution of the utility model is realized as follows:

[0005] A rolling fixture, comprising: a base;

[0006] It further comprises a positioning cylinder, a spiral cylinder and a driving structure;

[0007] The positioning cylinder is installed on the base;

[0008] A driving internal thread is arranged in the positioning cylinder;

[0009] A driving external thread is arranged outside the spiral cylinder;

[0010] The spiral cylinder is sleeved in the positioning cylinder;

[0011] One end of the driving structure is matched with the spiral cylinder;

[0012] The other end of the driving structure is installed on an output shaft matched with the rolling fixture.

[0013] Further, a stepped hole is arranged in the spiral cylinder,

[0014] The bolt to be rolled is installed in the stepped hole;

[0015] On one side of the small-diameter end of the stepped hole of the spiral cylinder, a plurality of limiting pieces are arranged, and the plurality of limiting pieces are clamped on the screw of the bolt to be rolled.

[0016] Furthermore, the length of the limiting piece is less than the length of the blank of the bolt to be rolled.

[0017] Furthermore, the driving structure includes a connecting hole, a bearing, a connecting shaft and a driving shaft;

[0018] The connecting hole is arranged at the end of the output shaft;

[0019] One end of the connecting shaft is rotatably installed in the connecting hole through the bearing;

[0020] The driving shaft is connected to the other end of the connecting shaft;

[0021] The spiral cylinder is matched with the driving shaft.

[0022] Furthermore, the connecting shaft and the driving shaft are of an integrally formed structure.

[0023] Furthermore, a first driving block is arranged at the center of the right end face of the driving shaft, and a second driving block is also arranged on the right end face of the driving shaft;

[0024] The first driving block is matched with the cross slot or flat slot of the bolt to be rolled;

[0025] A limiting slot is arranged on the left end face of the spiral cylinder, and the second driving block is matched with the limiting slot.

[0026] Furthermore, a plurality of the second driving blocks are arranged, and the plurality of second driving blocks are evenly distributed in a circle. Correspondingly, a plurality of the limiting slots are arranged, and the plurality of limiting slots are evenly distributed in a circle.

[0027] By arranging the positioning cylinder and the spiral cylinder, the utility model can drive the bolt to be rolled to rotate and advance along a set spiral track under the push of the output shaft. Therefore, the output shaft only needs to perform telescopic actions, and the actions are simple and efficient. At the same time, by arranging a stepped hole in the spiral cylinder and a plurality of limiting pieces at the end, the bolt to be rolled can be clamped to ensure that the axis will not deviate. At the same time, a driving structure is arranged to cooperate with the spiral cylinder and the bolt to be rolled, ensuring that the bolt to be rolled will not have a radial offset, and at the same time ensuring that the bolt to be rolled can move synchronously with the driving structure and the spiral cylinder, meeting the requirement that the bolt can perform a set movement track during the rolling of the bolt. At the same time, by arranging the driving structure and the spiral cylinder, the rapid installation and disassembly of the bolt to be rolled are satisfied, greatly reducing the positioning time and effectively improving the work efficiency. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of a rolling fixture in a specific embodiment of the present invention;

[0030] Figure 2 For Figure 1 It is a schematic diagram of the structure of the output shaft of a rolling fixture shown;

[0031] Figure 3 For Figure 1 It is a schematic diagram of the structure of the bearing of the driving structure of a rolling fixture shown;

[0032] Figure 4 For Figure 1 It is a schematic diagram of the structure of the driving shaft of the driving structure of a rolling fixture shown;

[0033] Figure 5 For Figure 1 It is a schematic diagram of the structure of the screw barrel of a rolling fixture shown;

[0034] Figure 6 For Figure 1 It is a schematic diagram of the structure of the positioning barrel of a rolling fixture shown;

[0035] Explanation of reference numerals: base 1; positioning barrel 2; driving internal thread 21; screw barrel 3; driving external thread 31; stepped hole 32; limiting piece 33; limiting groove 34; driving structure 4; connecting hole 41; bearing 42; connecting shaft 43; driving shaft 44; first driving block 441; second driving block 442; output shaft 5. Specific embodiments

[0036] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0037] In the specific embodiment of the present invention, see Figures 1-6 , a rolling fixture includes: base 1;

[0038] It further includes a positioning cylinder 2, a spiral cylinder 3 and a driving structure 4. The positioning cylinder limits the traveling track of the spiral cylinder, and the driving structure is used to drive the spiral cylinder to move forward spirally along the positioning cylinder;

[0039] The positioning cylinder 2 is installed on the base 1;

[0040] A driving internal thread 21 is provided inside the positioning cylinder 2;

[0041] A driving external thread 31 is provided outside the spiral cylinder 3;

[0042] The spiral cylinder 3 is sleeved inside the positioning cylinder 2;

[0043] One end of the driving structure 4 is matched with the spiral cylinder 3;

[0044] The other end of the driving structure 4 is installed on the output shaft 5 that is matched with the rolling fixture. Under the action of the output shaft 5, the driving structure 4 and the spiral cylinder 3 move forward. Under the action of the spiral cylinder 3 and the positioning cylinder 2, the driving structure 4 and the spiral cylinder 3 rotate synchronously.

[0045] In a specific embodiment of the present invention, see Figures 1-6 , a stepped hole 32 is provided inside the spiral cylinder 3. The stepped hole 32 is used to provide an accommodation space for the bolt to be rolled, and position and limit it;

[0046] The bolt to be rolled is installed inside the stepped hole 32, and there is a clearance connection between the small-diameter hole of the stepped hole 32 and the screw rod of the bolt to be rolled;

[0047] On one side of the spiral cylinder 3 at the small-diameter end of the stepped hole 32, a plurality of limiting pieces 33 are provided, and the plurality of limiting pieces 33 are clamped on the screw of the bolt to be rolled;

[0048] The plurality of limiting pieces clamp the bolt, and at the same time cooperate with the driving structure to firmly fix the bolt to be rolled in the stepped hole, ensuring that during the entire processing process, the bolt to be rolled always moves synchronously with the spiral cylinder and will not shift or rotate, etc.

[0049] In a specific embodiment of the present invention, see Figures 1-6 , the length of the limiting piece 33 is less than the blank length of the bolt to be rolled, ensuring the normal progress of the rolling work of the bolt.

[0050] In a specific embodiment of the present invention, see Figures 1-6 , the driving structure 4 includes a connection hole 41, a bearing 42, a connection shaft 43 and a driving shaft 44;

[0051] The connection hole 41 is provided at the end of the output shaft 5;

[0052] One end of the connecting shaft 43 is rotatably installed in the connecting hole 41 through the bearing 42, ensuring that the driving structure 4 moves synchronously with the spiral cylinder 3 and the bolt to be rolled during the working process;

[0053] The driving shaft 44 is connected to the other end of the connecting shaft 43;

[0054] The spiral cylinder 3 is matched with the driving shaft 44;

[0055] This application sets a separate driving structure to cooperate with the spiral cylinder. When problems occur in the driving structure or the spiral cylinder respectively, they can be replaced in time, and it is more convenient and faster to replace the bolt, greatly reducing the positioning time, thus effectively improving the work efficiency.

[0056] In a specific embodiment of the present utility model, see Figures 1-6 , the connecting shaft 5 and the driving shaft 44 are of an integrally formed structure.

[0057] In a specific embodiment of the present utility model, see Figures 1-6 , a first driving block 441 is provided at the center of the right end face of the driving shaft 44, and a second driving block 442 is further provided on the right end face of the driving shaft 44;

[0058] The first driving block 441 is in a cross shape or a straight shape. On the semi-finished bolt to be rolled, a cross groove or a straight groove is provided. The first driving block 441 cooperates with the cross groove or the straight groove of the bolt to be rolled. At the same time, the first driving block 441 has magnetic attraction and can adsorb the bolt, facilitating the positioning of the bolt;

[0059] A limiting groove 34 is provided on the left end face of the spiral cylinder 3. The second driving block 442 cooperates with the limiting groove 34. The cooperation between the second driving block 442 and the limiting groove 34 can ensure the synchronous movement of the driving structure 4 and the spiral cylinder 3;

[0060] By providing the first driving block 441 and the second driving block 442, the spiral cylinder 2 can be driven to perform synchronous spiral forward movement, ensuring the normal and orderly progress of the bolt rolling work.

[0061] In a specific embodiment of the present utility model, see Figures 1-6 , a plurality of the second driving blocks 442 are provided, and the plurality of second driving blocks 442 are evenly distributed in a circumferential manner. Correspondingly, a plurality of the limiting grooves 34 are provided, and the plurality of limiting grooves 34 are evenly distributed in a circumferential manner.

[0062] In a specific embodiment of the present utility model, see Figures 1-6, during operation, the first driving block and the second driving block drive synchronously. The first driving block drives the bolt to be rolled forward, and the second driving block drives the screw cylinder forward. At the same time, under the action of the external thread and the internal thread of the screw cylinder and the positioning cylinder, the screw cylinder and the bolt to be rolled move forward in a spiral manner;

[0063] During the movement, the bolt to be rolled is tightly limited between the conical platform of the driving shaft and the conical platform of the stepped hole. At the same time, under the action of multiple limiting pieces, it is ensured that the bolt to be rolled will not deviate during the movement.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rolling fixture, comprising: Base; It is characterized by: it also includes a positioning cylinder, a spiral cylinder and a driving structure; The positioning cylinder is installed on the base; The positioning cylinder is provided with a driving internal thread; The spiral cylinder is provided with a driving external thread on the outside; The spiral cylinder is sleeved in the positioning cylinder; One end of the driving structure cooperates with the spiral cylinder; The other end of the driving structure is mounted on an output shaft matched with the rolling fixture.

2. A rolling fixture as claimed in claim 1, characterized in that: The spiral cylinder is provided with a stepped hole. A rolled bolt is installed in the stepped hole; A plurality of limiting plates are arranged on one side of the spiral cylinder at the small diameter end of the stepped hole, and the plurality of limiting plates are clamped on the screws of the rolled bolts.

3. A rolling fixture as claimed in claim 2, characterized in that: The length of the limiting piece is smaller than the length of the blank space of the rolled bolt.

4. A rolling fixture as claimed in claim 2, characterized in that: The driving structure comprises a connecting hole, a bearing, a connecting shaft and a driving shaft; The connecting hole is arranged at the end of the output shaft; One end of the connecting shaft is rotatably mounted in the connecting hole through the bearing; The driving shaft is connected to the other end of the connecting shaft; The spiral cylinder cooperates with the driving shaft.

5. A rolling fixture as claimed in claim 4, characterized in that: The connecting shaft and the driving shaft are an integrally formed structure.

6. A rolling fixture as claimed in claim 4, characterized in that: A first driving block is arranged at the center of the right end surface of the driving shaft, and a second driving block is also arranged on the right end surface of the driving shaft; The first driving block cooperates with the cross groove or the slotted groove of the rolled bolt; A limiting groove is arranged on the left end surface of the spiral cylinder, and the second driving block cooperates with the limiting groove.

7. A rolling fixture as claimed in claim 6, characterized in that: There are a plurality of second driving blocks, which are evenly distributed around the circumference. Accordingly, there are a plurality of limiting grooves, which are evenly distributed around the circumference.

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