Bolt cold heading clamp

Abstract

The utility model belongs to the technical field of bolt cold heading forming, and discloses a bolt cold heading clamp which comprises a bottom plate, a servo motor is fixedly connected to the top end of the bottom plate, a two-way screw is fixedly connected to the tail end of an output shaft of the servo motor, a guide rail is spirally connected to the outer side of the two-way screw, and a sliding groove is formed in the upper portion of the guide rail. A first sliding block is slidably connected into the sliding groove, a first supporting block is fixedly connected to the top end of the first sliding block, a first V-shaped clamping plate is attached to the top end of the first supporting block, a second sliding block is slidably connected into the sliding groove, a second supporting block is fixedly connected to the top end of the second sliding block, and a second V-shaped clamping plate is attached to the top end of the second supporting block. By means of the technical scheme, the problems that in the prior art, due to the fact that the bolt positioning precision is poor, the machining precision is low, the rejection rate is increased, economic losses are increased, bolts of different sizes cannot be effectively clamped, the clamping efficiency is low, and cold heading forming of bolts is not facilitated are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt cold heading forming, in particular to a bolt cold heading clamp. Background Art

[0002] Bolt cold heading is a metal forming process used to manufacture fasteners such as bolts. During the cold heading process, the metal material is subjected to huge pressure through the mold at room temperature, causing it to undergo plastic deformation, thereby directly forming it into the shape of the bolt head and shank. The bolt cold heading fixture is an important tool used to fix and clamp the workpiece during the bolt cold heading process. The clamping accuracy of the bolt cold heading fixture plays an important role in the quality of the bolt forming.

[0003] During use, the existing bolt cold heading fixture has poor positioning accuracy for the bolts, resulting in low processing accuracy, inability to effectively clamp bolts of different sizes, low clamping efficiency, and is not conducive to the cold heading of the bolts.

[0004] Therefore, a bolt cold heading fixture is proposed to solve the above problems. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a bolt cold heading fixture, which has the advantages of high positioning accuracy and can clamp bolts of different sizes.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bolt cold heading fixture, comprising a base plate, the top end of the base plate is fixedly connected to a servo motor, the end of the output shaft of the servo motor is fixedly connected to a bidirectional screw, the outer side of the bidirectional screw is spirally connected to a guide rail, the upper part of the guide rail is provided with a slide groove, the interior of the slide groove is slidably connected to a first slider, the top end of the first slider is fixedly connected to a first support block, the top end of the first support block is fitted with a first V-shaped clamp, the interior of the slide groove is slidably connected to a second slider, the top end of the second slider is fixedly connected to a second support block, and the top end of the second support block is fitted with a second V-shaped clamp.

[0007] Preferably, a worm is rotatably connected inside the second support block, a worm wheel is meshedly connected to the outside of the worm, a threaded rod is rotatably connected inside the worm wheel, a connecting block is sleeved on the top end of the threaded rod, and the connecting block is embedded inside the second V-shaped clamping plate.

[0008] Preferably, a support seat is sleeved on the outer side of the bidirectional screw, a bearing is embedded in the interior of the support seat, and the bearing sleeve is sleeved on the outer side of the bidirectional screw.

[0009] Preferably, an adjusting sleeve is rotatably connected to the interior of the second sliding block, a limiting column is embedded on the outer side of the adjusting sleeve, and a bidirectional screw is spirally connected to the interior of the adjusting sleeve.

[0010] Preferably, a limiting block is fixedly connected to the bottom surface of the slide groove, and one end of the limiting block is fixedly connected to a rubber pad.

[0011] Preferably, one end of the bidirectional screw is fixedly connected to a rotating block, and the rotating block is embedded in the guide rail.

[0012] Preferably, one end of the worm is fixedly connected to a handwheel, and the handwheel is outside the second support block.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] The first V-shaped clamping plate and the second V-shaped clamping plate are clamped and fixed by the first V-shaped clamping plate and the second V-shaped clamping plate. Because one end of the first V-shaped clamping plate and the second V-shaped clamping plate are V-shaped, the centering and positioning of bolts of different sizes can be carried out conveniently and quickly, with good positioning accuracy and high processing accuracy, thus reducing losses.

[0015] 2. The utility model sets a threaded rod. When cold heading forming process is performed on bolts of different lengths, the center of gravity of the bolts is different according to the length of the bolts. Therefore, according to the height of the center of gravity of the bolts, the worm is rotated, and the worm drives the worm wheel with outer meshing connection to rotate, and the worm wheel drives the threaded rod with internal rotation connection to rise, and the threaded rod drives the connecting block with the top to rise, and the connecting block drives the second V-shaped clamping plate to rise. Repeat the above operation to level the height of the first V-shaped clamping plate with the second V-shaped clamping plate, so that it can clamp the bolt more stably and with high clamping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the cutaway structure of the utility model;

[0018] Figure 3This is a schematic diagram of the cross-sectional structure of the second slider of the present invention;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the support seat of the utility model;

[0020] Figure 5 For this utility model Figure 2 Schematic diagram of the structure at point A.

[0021] In the figure: 1. Base plate; 2. Servo motor; 3. Bidirectional screw; 4. Guide rail; 5. Slide; 6. First slider; 7. First support block; 8. First V-shaped clamp; 9. Second slider; 10. Second support block; 11. Second V-shaped clamp; 12. Worm; 13. Worm gear; 14. Threaded rod; 15. Connecting block; 16. Support seat; 17. Bearing; 18. Adjusting sleeve; 19. Limit column; 20. Limit block; 21. Rubber pad; 22. Rotating block; 23. Handwheel. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] like Figures 1 to 5 As shown, the utility model provides a bolt cold heading fixture, including a base plate 1, the top of the base plate 1 is fixedly connected to a servo motor 2, the end of the output shaft of the servo motor 2 is fixedly connected to a bidirectional screw 3, the outer side of the bidirectional screw 3 is spirally connected to a guide rail 4, the upper part of the guide rail 4 is provided with a slide groove 5, the inside of the slide groove 5 is slidably connected to a first slider 6, the top of the first slider 6 is fixedly connected to a first support block 7, the top of the first support block 7 is fitted with a first V-shaped clamping plate 8, the inside of the slide groove 5 is slidably connected to a second slider 9, the top of the second slider 9 is fixedly connected to a second support block 10, the top of the second support block 10 is fitted with a second V-shaped clamping plate 11, one end of the first V-shaped clamping plate 8 and the second V-shaped clamping plate 11 are V-shaped, which can center and position bolts of different sizes, with good positioning accuracy and high processing accuracy.

[0024] Specifically, the second support block 10 is internally connected to a worm 12, the outer side of the worm 12 is meshedly connected to a worm wheel 13, the internal rotatable connection of the worm wheel 13 is connected to a threaded rod 14, the top end of the threaded rod 14 is sleeved with a connecting block 15, and the connecting block 15 is embedded in the interior of the second V-shaped clamping plate 11, and the height of the clamping plate can be adjusted according to the height of the center of gravity of the bolt, so that it can clamp the bolt more stably and improve the clamping efficiency.

[0025] Furthermore, a support seat 16 is provided on the outer side of the bidirectional screw 3, and a bearing 17 is embedded in the interior of the support seat 16, and the bearing 17 is provided on the outer side of the bidirectional screw 3. Under the action of the bearing 17, the friction coefficient between the bidirectional screw 3 and the support seat 16 can be reduced, thereby ensuring the rotation accuracy of the bidirectional screw 3 and reducing energy consumption.

[0026] Furthermore, the second slider 9 is internally rotatably connected to an adjusting sleeve 18, the outer side of the adjusting sleeve 18 is embedded with a limiting column 19, and the internal spiral connection of the adjusting sleeve 18 is a bidirectional screw 3. If the staff finds that the clamping center is not ideal, they can pull out the limiting column 19, rotate the adjusting sleeve 18, and move the second slider 9 to change the position of the clamping center, which has high practical performance.

[0027] It is worth noting that the bottom surface of the slide groove 5 is fixedly connected to a limiting block 20, and one end of the limiting block 20 is fixedly connected to a rubber pad 21. Under the action of the limiting block 20, the second slider 9 can be effectively prevented from sliding out of the interior of the slide groove 5. The rubber pad 21 can protect the second slider 9 to prevent it from being damaged by excessive extrusion force.

[0028] It is worth noting that one end of the bidirectional screw 3 is fixedly connected to a rotating block 22, and the rotating block 22 is embedded in the inside of the guide rail 4, which facilitates the rotation of the bidirectional screw 3 inside the guide rail 4, prevents it from deviating during rotation, and improves stability.

[0029] It is worth mentioning that one end of the worm 12 is fixedly connected to a handwheel 23, and the handwheel 23 is on the outside of the second support block 10. Under the action of the handwheel 23, it is convenient for the staff to apply rotational force to the worm 12, thereby improving work efficiency.

[0030] Among them, the servo motor 2 and the bearing 17 are existing technologies and will not be described in detail; at the same time, the present invention also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0031] Working principle and process:

[0032] When the bolt needs to be cold-forging, the cold-forging machine first pushes one end of the bolt to one side of the guide rail 4, then starts the servo motor 2 fixedly connected to the top of the base plate 1, and the servo motor 2 drives the bidirectional screw 3 fixedly connected to the end of the output shaft to rotate. Under the action of the bearing 17, the friction coefficient between the bidirectional screw 3 and the support seat 16 can be reduced, thereby ensuring the rotation accuracy of the bidirectional screw 3 and reducing energy consumption. The bidirectional screw 3 drives the first slider 6 and the second slider 9 to slide in the slide groove 5 opened on the upper part of the guide rail 4. Under the action of the limit block 20, the second slider can be effectively prevented from sliding. The block 9 slides out of the interior of the slide groove 5, and the rubber pad 21 can protect the second slider 9 to prevent it from being damaged by excessive extrusion force. Under the action of the rotating block 22, the bidirectional screw 3 is easy to rotate inside the guide rail 4 to prevent it from deflecting during the rotation process, thereby improving stability. The first slider 6 drives the first support block 7 fixedly connected to the top to move, and the first support block 7 drives the first V-shaped clamping plate 8 fitted at the top to approach the bolt. The second slider 9 drives the second support block 10 fixedly connected to the top to move, and the second support block 10 drives the second V-clamping plate 11 fitted at the top to approach the bolt The first V-shaped clamping plate 8 and the second V-shaped clamping plate 11 clamp and fix the bolt. Because one end of the first V-shaped clamping plate 8 and the second V-shaped clamping plate 11 is V-shaped, bolts of different sizes can be centered and positioned, which is convenient and fast, with good positioning accuracy and high processing accuracy, reducing losses. If the clamping center is found to be unsatisfactory, the limiting column 19 can be pulled out, the adjusting sleeve 18 can be rotated, and the second slider 9 can be moved to change the position of the clamping center. The practical performance is high. When the cold heading process is performed on bolts of different lengths, the center of gravity of the bolts is different according to the length of the bolts. Therefore, according to the height of the center of gravity of the bolt, the handwheel 23 is turned to drive the worm 12 to rotate. Under the action of the handwheel 23, it is convenient for the staff to apply rotational force to the worm 12, thereby improving work efficiency. The worm 12 drives the worm wheel 13 engaged on the outside to rotate, and the worm wheel 13 drives the threaded rod 14 connected to the inside to rise. The threaded rod 14 drives the connecting block 15 sleeved on the top to rise, and the connecting block 15 drives the second V-shaped clamping plate 11 to rise. Repeat the above operation to level the height of the first V-shaped clamping plate 8 with the second V-shaped clamping plate 11, so that it can clamp the bolt more stably and with high clamping efficiency.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bolt cold heading fixture, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixedly connected to a servo motor (2), the end of the output shaft of the servo motor (2) is fixedly connected to a bidirectional screw (3), the outer side of the bidirectional screw (3) is spirally connected to a guide rail (4), the upper part of the guide rail (4) is provided with a slide groove (5), the interior of the slide groove (5) is slidably connected to a first slider (6), the top of the first slider (6) is fixedly connected to a first support block (7), the top of the first support block (7) is fitted with a first V-shaped clamping plate (8), the interior of the slide groove (5) is slidably connected to a second slider (9), the top of the second slider (9) is fixedly connected to a second support block (10), and the top of the second support block (10) is fitted with a second V-shaped clamping plate (11).

2. A bolt cold heading fixture according to claim 1, characterized in that: The second support block (10) is internally rotatably connected to a worm (12), the outer side of the worm (12) is meshedly connected to a worm wheel (13), the inner side of the worm wheel (13) is internally rotatably connected to a threaded rod (14), the top end of the threaded rod (14) is sleeved with a connecting block (15), and the connecting block (15) is embedded in the interior of the second V-shaped clamping plate (11).

3. The bolt cold heading fixture according to claim 1, characterized in that: The outer side of the bidirectional screw (3) is sleeved with a support seat (16), the interior of the support seat (16) is inlaid with a bearing (17), and the bearing (17) is sleeved on the outer side of the bidirectional screw (3).

4. The bolt cold heading fixture according to claim 1, characterized in that: The second slider (9) is internally rotatably connected to an adjusting sleeve (18), a limiting column (19) is embedded on the outer side of the adjusting sleeve (18), and the interior of the adjusting sleeve (18) is spirally connected to a bidirectional screw (3).

5. The bolt cold heading fixture according to claim 1, characterized in that: The bottom surface of the slide groove (5) is fixedly connected to a limiting block (20), and one end of the limiting block (20) is fixedly connected to a rubber pad (21).

6. The bolt cold heading fixture according to claim 1, characterized in that: One end of the bidirectional screw (3) is fixedly connected to a rotating block (22), and the rotating block (22) is embedded in the interior of the guide rail (4).

7. The bolt cold heading fixture according to claim 2, characterized in that: One end of the worm (12) is fixedly connected to a hand wheel (23), and the hand wheel (23) is outside the second support block (10).

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