Stud bolt machining conversion device

Abstract

The utility model discloses a double-end bolt machining conversion device which comprises a workbench horizontally arranged left and right, a sliding part is arranged on the upper surface of the workbench and connected with the upper surface of the workbench in a left-right sliding mode, the upper end of the sliding part is connected with a bolt hexagonal clamping mechanism through a rotating part, and the bolt hexagonal clamping mechanism is rotationally connected with the sliding part. The rotating axis is vertically arranged; the bolt hexagonal clamping mechanism comprises a vertically-arranged clamping support, a through hole is formed in the middle of the clamping support in the left-right direction, three sets of threaded holes are evenly formed in the circumferential direction of the through hole, and each set of threaded holes penetrate through the wall of the clamping support in the radial direction. A group of positioning screw rods are correspondingly arranged in each group of threaded holes in a penetrating manner, and each group of positioning screw rods are in threaded connection with the corresponding threaded holes; the double-end bolt semi-finished product clamping device can clamp a double-end bolt semi-finished product and can achieve one-time positioning adjustment of the double-end bolt semi-finished product at the same time.

Description

Technical Field

[0001] The utility model relates to the field of stud bolt machining, in particular to a stud bolt machining conversion device. Background Art

[0002] A stud is a cylindrical fastener with threads on both ends. As a threaded fastener, studs are widely used in power, chemical, oil refining, valves, railways, bridges, steel structures, auto parts, machinery, boiler steel structures, tower cranes, large-span steel structures, and large buildings.

[0003] The production of stud bolts requires the use of bolt clamping equipment and thread processing equipment, and the main processes are as follows: first, the material is pulled out, and the distorted raw material is straightened by the material pulling equipment; second, the straightened raw material is cut into the set length according to the drawing requirements by the cutting equipment; third, the cut short material is fixed and sent to the thread rolling equipment for thread processing; then the production is completed.

[0004] In reality, due to the large number of application scenarios of studs, there are many sizes and specifications of studs. Therefore, the fixing equipment of studs is often not very universal and cannot clamp and fix studs of various specifications, resulting in low production efficiency.

[0005] The applicant is aware of a stud bolt quick-install clamp (CN 113211378 B), which includes a first half sleeve; a second half sleeve, wherein the first half sleeve and the second half sleeve can be combined to form a sleeve member; corresponding internal threads are provided on the first ends of the contact surfaces of the first half sleeve and the second half sleeve along their length; after the first half sleeve and the second half sleeve are combined, the internal threads clamp the external threads of the stud bolt, and the internal threads and the external threads are engaged with each other; a fixing member, wherein a first end face of the fixing member is provided with a first insertion hole, the second end of the sleeve member can be inserted into the first insertion hole, and the inner wall of the first insertion hole presses the outer side face of the sleeve member; a first through hole is provided on the side face of the fixing member, and a second through hole is provided on the second end of the side face of the sleeve member, and the first through hole and the second through hole are interlocked. Coaxial arrangement; a first protrusion is provided at the second end of the first half sleeve, and a second protrusion is provided at the second end of the second half sleeve; after the first half sleeve and the second half sleeve are combined, the first protrusion and the second protrusion are combined to form a protrusion; a second socket is provided on the bottom surface of the first insertion hole, and the protrusion can be inserted into the second insertion hole; the second through hole passes through the first protrusion and the second protrusion, and the axial direction of the second through hole is perpendicular to the axial direction of the protrusion; a boss is provided on the inner wall of the first insertion hole; a slot is provided on the outer side surface of the sleeve member corresponding to the boss, and the boss can be inserted into the slot; the length direction of the slot is set at an angle to the length direction of the outer side surface of the sleeve member.

[0006] However, the above application has the following problems:

[0007] 1. The fixing structure of the stud bolt semi-finished product of the above equipment is relatively complex, and the equipment manufacturing cost is high;

[0008] 2. The above equipment cannot complete the thread rolling processing at both ends of the stud bolt semi-finished product by positioning the stud bolt semi-finished product once, resulting in repeated clamping and positioning of the stud bolt semi-finished product, affecting the thread rolling processing accuracy. Utility Model Content

[0009] The purpose of the utility model is to provide a stud bolt machining conversion device, which can clamp the stud bolt semi-finished product and, through one-time positioning and posture adjustment of the stud bolt semi-finished product, complete the thread rolling processing of the threads at both ends of the stud bolt semi-finished product, thereby improving work efficiency and ensuring process accuracy.

[0010] The utility model adopts the following technical solutions:

[0011] A stud bolt machining conversion device includes a horizontally arranged workbench, characterized in that: a sliding part is provided on the upper surface of the workbench and is connected to the workbench for left and right sliding, the upper end of the sliding part is rotated through a rotating part to connect to a bolt hexagonal clamping mechanism, and the rotation axis of the rotating part is vertically arranged; the bolt hexagonal clamping mechanism includes a vertically arranged clamping bracket, a through hole is opened in the middle part of the clamping bracket along the left and right directions, three groups of threaded holes are evenly opened in the circumference of the through hole, and each group of threaded holes is respectively penetrated radially through the side wall of the clamping bracket; a group of positioning screws is respectively penetrated in each group of threaded holes, and each group of positioning screws is respectively threadedly connected to the corresponding threaded holes.

[0012] Furthermore, the clamping bracket includes an upper bracket and a lower bracket that are correspondingly arranged. The upper bracket is hinged to the front end of the lower bracket, and the rear end is detachably connected through a locking portion.

[0013] Furthermore, the locking portion includes a boss arranged on the outer side of the rear end of the upper bracket and a limit pin arranged at the rear end of the lower bracket and horizontally arranged on the left and right sides, and the boss and the limit pin are arranged correspondingly up and down; a vertical rectangular through groove is opened in the middle of the boss along the horizontal direction, and a vertical locking threaded hole is opened in the middle of the limit pin at a position corresponding to the rectangular through groove. The boss is connected to the limit pin through a locking screw and the locking threaded hole, and the lower end of the nut of the locking screw is pressed against the upper surface of the rectangular through groove; a limit pin accommodating groove with an upper end opening is opened at the rear end of the lower bracket, and a limit pin accommodating hole is opened on the left end surface of the limit pin accommodating groove.

[0014] Furthermore, the sliding part adopts a slider that is slidably connected to the upper surface of the workbench. The upper surface of the workbench is provided with left and right sliding grooves. The slider is arranged in the sliding grooves and the slider is slidably connected to the upper surface of the workbench through the sliding grooves. A rotating part is provided on the upper end surface of the slider.

[0015] Furthermore, the rotating part is a bearing, the outer ring of the bearing fixes the upper end surface of the slider, and the inner ring of the bearing fixes the lower end surface of the clamping bracket.

[0016] Furthermore, a positioning system is provided between the upper surface of the workbench and the clamping bracket; the positioning system includes a positioning part and a positioning slot, the upper end of the positioning part is rotatably connected to the clamping bracket, and the lower end of the positioning part is detachably connected to the workbench through the positioning slot.

[0017] Furthermore, the positioning part can adopt a positioning pin, and the positioning groove can adopt a positioning square hole arranged on the front and rear sides of the slide groove on the upper surface of the workbench; the positioning square hole is vertically arranged, the positioning pin is cylindrical and the outer surface of the cylinder is inscribed in the left and right inner walls of the positioning square hole, the lower end of the positioning pin is inserted into the positioning square hole, and the lower end surface of the positioning pin forms an inclined surface with a set angle, and after the positioning pin is fully inserted into the positioning square hole, the upper end of the inclined surface is higher than the upper surface of the workbench; the upper end of the positioning pin is inserted into a fixed sleeve with an opening at the lower end and is connected to the fixed sleeve for sliding up and down, and the upper end of the fixed sleeve is rotatably connected to the lower end of the clamping bracket.

[0018] Furthermore, a pulley is rotatably provided at the inner end of each group of positioning screws, and the axis of the pulley shaft is arranged along the radial direction of the positioning screw.

[0019] Furthermore, a handle is connected to the outside of the fixing sleeve.

[0020] Furthermore, among the three groups of threaded holes, one group of threaded holes is vertically arranged.

[0021] The utility model provides a locking portion so that the hexagonal bolt clamping mechanism does not need to adjust each positioning screw separately when clamping the stud bolt semi-finished product, thereby simplifying the operation process during batch production.

[0022] By setting up the rotating part, the semi-finished stud bolt can be clamped at one time and the two ends can be converted and processed respectively, which improves the processing accuracy and efficiency;

[0023] By setting the sliding part and utilizing the guide rail sliding principle, the machine is suitable for processing stud bolt semi-finished products of various lengths.

[0024] By providing the positioning portion, the swing of the stud bolt semi-finished product caused by the vibration of the thread rolling equipment during the thread rolling process is prevented, thereby further improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the workbench of the utility model;

[0026] Figure 2 This is a schematic structural diagram of the positioning screw of the utility model;

[0027] Figure 3This is a structural diagram of a semi-finished stud bolt of the utility model;

[0028] Figure 4 This is a structural diagram of the bearing of the utility model;

[0029] Figure 5 This is a structural diagram of the positioning square hole of the utility model;

[0030] Figure 6 This is a structural diagram of the chute of the utility model;

[0031] Figure 7 This is a structural diagram of the fixed sleeve of the utility model.

[0032] In the figure, 1. workbench; 2. clamping bracket; 3. through hole; 4. threaded hole; 5. positioning screw; 6. upper bracket; 7. lower bracket; 8. stud bolt semi-finished product; 9. boss; 10. limit pin; 11. rectangular through groove; 12. locking threaded hole; 13. locking screw; 14. limit pin receiving groove; 15. limit pin receiving hole; 16. slide groove; 17. slider; 18. positioning square hole; 19. positioning pin; 20. bearing; 21. inclined plane; 22. fixing sleeve; 23. pulley; 24. handle. DETAILED DESCRIPTION

[0033] like Figures 1 to 7 As shown, the utility model describes a stud bolt machining conversion device, comprising a horizontally arranged workbench 1, a sliding portion provided on the upper surface of the workbench 1 which is slidably connected to the workbench 1 left and right, the upper end of the sliding portion is rotated through a rotating portion to connect the bolt hexagonal clamping mechanism, and the rotation axis of the rotating portion is vertically arranged; the bolt hexagonal clamping mechanism comprises a vertically arranged clamping bracket 2, a through hole 3 is provided in the middle part of the clamping bracket 2 along the left and right directions, and three groups of threaded holes 4 are evenly provided in the circumference of the through hole 3, and each group of threaded holes 4 is respectively radially penetrated through the side wall of the clamping bracket 2; a group of positioning screws 5 is respectively penetrated in each group of threaded holes 4, and each group of positioning screws 5 is respectively threadedly connected with the corresponding threaded holes 4.

[0034] During the working process, the stud bolt semi-finished product 8 with threads to be processed at both ends is horizontally passed through the through hole 3 opened in the middle of the clamping bracket 2 along the axial direction until the hexagonal part in the middle of the stud bolt semi-finished product 8 is in the through hole 3, and the inner end of the positioning screw 5 is moved inward by rotating the positioning screw 5, that is, the inner end of each group of positioning screws 5 is respectively pressed against the corresponding hexagonal plane of the stud bolt semi-finished product 8 (the three hexagonal planes of the stud bolt semi-finished product 8 pressed against by the inner ends of the three groups of positioning screws 5 are spaced apart from each other), which is used to limit the freedom of rotation of the stud bolt semi-finished product 8 along the horizontal axis; it is convenient for the subsequent thread rolling equipment to apply torque to the stud bolt semi-finished product 8 during the thread rolling process; the bolt hexagonal clamping mechanism is connected to the upper surface of the workbench 1 by sliding part to the left and right, driving the bolt The hexagonal clamping mechanism moves, so that one end of the stud bolt semi-finished product 8 to be processed with the thread moves toward the thread rolling equipment and enters the thread rolling equipment for thread rolling processing; after the thread rolling processing of one end of the stud bolt semi-finished product 8 is completed, the bolt hexagonal clamping mechanism is driven away from the thread rolling equipment, and the bolt hexagonal clamping mechanism is driven to rotate horizontally along the rotation axis by the rotating part, so that the other end of the stud bolt semi-finished product 8 to be processed with the thread rotates to face the thread rolling equipment, and then the bolt hexagonal clamping mechanism is driven to move, so that the other end of the stud bolt semi-finished product 8 to be processed with the thread moves toward the thread rolling equipment and enters the thread rolling equipment for thread rolling processing, and the thread rolling processing of the front and rear ends of the stud bolt semi-finished product 8 can be completed through one-time clamping and posture adjustment of the bolt hexagonal clamping mechanism.

[0035] When the three groups of positioning screws 5 position and limit the freedom of the stud bolt semi-finished product 8, they need to be rotated separately to adjust the position of each group of positioning screws 5, which is not conducive to mass production and affects work efficiency; in the utility model, the clamping bracket 2 includes a corresponding upper bracket 6 and a lower bracket 7, the upper bracket 6 and the lower bracket 7 are hinged at the front end, and the rear end is detachably connected through a locking part.

[0036] During the batch production process, each set of positioning screws 5 is adjusted so that the inner ends of the positioning screws 5 are respectively pressed against the corresponding hexagonal planes of the stud bolt semi-finished products 8, and the two ends of the stud bolt semi-finished products 8 are respectively processed by the thread rolling machine; after the processing is completed, the rear ends of the upper bracket 6 and the lower bracket 7 are disconnected by adjusting the locking part, and the stud bolt finished product can be taken out after the upper bracket 6 is rotated upward; because the hexagons of the stud bolt semi-finished products 8 have the same size specifications during the batch production process, there is no need to adjust each set of positioning screws 5 again during the process of limiting the hexagons of the next set of stud bolt semi-finished products 8. It is only necessary to rotate the upper bracket 6 downward and lock the rear ends of the upper bracket 6 and the lower bracket 7 by adjusting the locking part to achieve the limitation of the hexagonal plane of the stud bolt semi-finished products 8.

[0037] In this embodiment, the locking part includes a boss 9 arranged on the outer side of the rear end of the upper bracket 6 and a limit pin 10 arranged at the rear end of the lower bracket 7 and horizontally arranged on the left and right sides. The boss 9 and the limit pin 10 are arranged correspondingly up and down; a vertical rectangular through groove 11 is opened in the middle of the boss 9 along the horizontal direction, and a vertical locking threaded hole 12 is opened in the middle of the limit pin 10 at a position corresponding to the rectangular through groove 11. The boss 9 is connected to the limit pin 10 through a locking screw 13 and the locking threaded hole 12, and the lower end of the nut of the locking screw 13 is pressed against the upper surface of the rectangular through groove 11; a limit pin accommodating groove 14 with an upper end opening is opened at the rear end of the lower bracket 7, and a limit pin accommodating hole 15 is opened on the left end surface of the limit pin accommodating groove 14. The limit pin accommodating hole 15 limits the left end of the inserted limit pin 10, and finally forms a connection with the rear end of the lower bracket 7.

[0038] During the locking process, the locking part first places the limit pin 10 in the limit pin accommodating groove 14, and then moves the limit pin 10 to the left, so that the left end of the limit pin 10 is inserted into the limit pin accommodating hole 15 to form a limit, and at the same time adjusts the posture of the limit pin 10 so that the locking threaded hole 12 opens upward and corresponds to the rectangular through groove 11; the locking screw 13 passes through the rectangular through groove 11 and is threadedly engaged with the locking threaded hole 12, and the lower end face of the nut of the locking screw 13 is pressed against the upper surface of the rectangular through groove 11 by pre-tightening the locking screw 13; the rear ends of the upper bracket 6 and the lower bracket 7 are locked; by locking the rear ends of the upper bracket 6 and the lower bracket 7, rapid limiting of the hexagonal plane of the stud bolt semi-finished product 8 can be achieved, so there is no need to adjust the three sets of positioning screws 5 separately in mass production.

[0039] In this embodiment, the sliding part adopts a slider 17 that is slidably connected to the upper surface of the workbench 1. The upper surface of the workbench 1 is provided with left and right sliding grooves 16. The slider 17 is arranged in the sliding groove 16 and the slider 17 is slidably connected to the upper surface of the workbench 1 through the sliding groove 16. A rotating part is provided on the upper end surface of the slider 17.

[0040] In this embodiment, the rotating part is a bearing 20 , the outer ring of the bearing 20 fixes the upper end surface of the slider 17 , and the inner ring of the bearing 20 fixes the lower end surface of the clamping bracket 2 .

[0041] In order to prevent one end of the stud bolt semi-finished product 8 from shaking back and forth and left and right during the thread rolling process, resulting in low thread accuracy after thread rolling, in the utility model, a positioning system is also provided between the upper surface of the workbench 1 and the clamping bracket 2; the positioning system includes a positioning part and a positioning groove, the upper end of the positioning part is rotatably connected to the clamping bracket 2, and the lower end of the positioning part is detachably connected to the workbench 1 through the positioning groove.

[0042] In this embodiment, the positioning portion can be a positioning pin 19, and the positioning groove can be a positioning square hole 18 provided on the front and rear sides of the slide groove 16 on the upper surface of the workbench 1; the positioning square hole 18 is provided vertically, the positioning pin 19 is cylindrical, and the outer surface of the cylinder is inscribed in the left and right inner walls of the positioning square hole 18, and the lower end of the positioning pin 19 is inserted into the positioning square hole 18. In order to achieve a detachable connection, the lower end surface of the positioning pin 19 forms an inclined surface 21 with a set angle, and after the positioning pin 19 is fully inserted into the positioning square hole 18, the upper end of the inclined surface 21 is higher than the upper surface of the workbench 1; the upper end of the positioning pin 19 is inserted into a fixed sleeve 22 with an opening at the lower end and is connected to the fixed sleeve 22 in an up and down sliding manner. The upper end of the fixed sleeve 22 is rotatably connected to the lower end of the clamping bracket 2, so as to improve the convenience of using the positioning system.

[0043] During the thread rolling process, one end of the stud bolt semi-finished product 8 moves toward the thread rolling equipment and is thread rolled after reaching the set position. Under the action of gravity, the lower end of the positioning pin 19 moves downward until it is inserted into the positioning square hole 18. At this time, the fixing sleeve 22 is rotated until the inclined surface 21 of the lower end of the positioning pin 19 connected to the fixing sleeve 22 faces the front or rear side. Since the inner walls of the left and right ends of the positioning square hole 18 circumscribe the outer surface of the positioning pin 19, the hexagonal clamping mechanism of the bolt cannot move left and right and rotate relative to the upper surface of the workbench 1; after the thread rolling is completed, the fixing sleeve 22 is rotated so that the inclined surface 21 of the lower end of the positioning pin 19 connected to the fixing sleeve 22 faces away from the thread rolling equipment, and then The hexagonal bolt clamping mechanism is driven to move the positioning pin 19 to the side away from the thread rolling device. Since the inclined surface 21 at the lower end of the positioning pin 19 is in the same direction as the moving direction of the positioning pin 19, the side wall of the opening of the positioning square hole 18 and the inclined surface 21 at the lower end of the positioning pin 19 are squeezed, and the positioning pin 19 is driven to move upward along the fixed sleeve 22 until it is disengaged from the positioning square hole 18; at this time, the hexagonal bolt clamping mechanism can complete the rotation so that the other end of the stud bolt semi-finished product 8 is facing the thread rolling device, and then the hexagonal bolt clamping mechanism is driven to move the other end of the stud bolt semi-finished product 8 toward the thread rolling device until it reaches the set position. Under the action of gravity, the lower end of the positioning pin 19 is inserted into the positioning square hole 18 on the other side;

[0044] In order to prevent the inner end of the positioning screw 5 from scratching the hexagonal surface of the stud bolt semi-finished product 8 during the process of the inner end of the positioning screw 5 contacting the hexagonal surface of the stud bolt; in this embodiment, a pulley 23 is rotatably provided at the inner end of each group of positioning screws 5, and the axis of the pulley shaft is arranged along the radial direction of the positioning screw 5; by utilizing the outer side of the pulley 23 to contact the hexagonal surface of the stud bolt semi-finished product 8, the inner end of the positioning screw 5 can be effectively prevented from scratching the hexagonal surface of the stud bolt semi-finished product 8.

[0045] In order to facilitate driving the fixed sleeve 22 to rotate, in this embodiment, a handle 24 is further connected to the outer side of the fixed sleeve 22.

[0046] In order to facilitate the processing of the threaded holes 4 , in this embodiment, one of the three groups of threaded holes 4 is vertically arranged.

Claims

1. A stud bolt machining conversion device, comprising a horizontally arranged workbench, characterized in that: The upper surface of the workbench is provided with a sliding part which is connected to the workbench for sliding left and right movement. The upper end of the sliding part is connected to a bolt hexagonal clamping mechanism through a rotating part, and the rotation axis of the rotating part is vertically arranged; the bolt hexagonal clamping mechanism includes a vertically arranged clamping bracket, a through hole is opened in the middle part of the clamping bracket along the left and right directions, and three groups of threaded holes are evenly opened around the through hole, and each group of threaded holes is radially penetrated through the side wall of the clamping bracket; a group of positioning screws is correspondingly penetrated in each group of threaded holes, and each group of positioning screws is threadedly connected to the corresponding threaded holes.

2. The stud bolt machining conversion device according to claim 1, characterized in that: The clamping bracket includes an upper bracket and a lower bracket that are correspondingly arranged. The upper bracket and the lower bracket are hinged at the front end, and the rear end is detachably connected through a locking portion.

3. The stud bolt machining conversion device according to claim 2, characterized in that: The locking part includes a boss arranged on the outer side of the rear end of the upper bracket and a limit pin arranged at the rear end of the lower bracket and horizontally arranged on the left and right sides. The boss and the limit pin are arranged correspondingly up and down; a vertical rectangular through groove is opened in the middle of the boss along the horizontal direction, and a vertical locking threaded hole is opened in the middle of the limit pin at a position corresponding to the rectangular through groove. The boss is connected to the limit pin through a locking screw and a locking threaded hole, and the lower end of the nut of the locking screw is pressed against the upper surface of the rectangular through groove; a limit pin accommodating groove with an upper end opening is opened at the rear end of the lower bracket, and a limit pin accommodating hole is opened on the left end surface of the limit pin accommodating groove.

4. The stud bolt machining conversion device according to claim 1, characterized in that: The sliding part adopts a slider that is slidably connected to the upper surface of the workbench. The upper surface of the workbench is provided with left and right sliding grooves. The slider is arranged in the sliding groove and the slider is slidably connected to the upper surface of the workbench through the sliding groove. A rotating part is provided on the upper end surface of the slider.

5. The stud bolt machining conversion device according to claim 4, characterized in that: The rotating part is a bearing, the outer ring of the bearing fixes the upper end surface of the slider, and the inner ring of the bearing fixes the lower end surface of the clamping bracket.

6. The stud bolt machining conversion device according to claim 1, characterized in that: A positioning system is also provided between the upper surface of the workbench and the clamping bracket; the positioning system includes a positioning part and a positioning slot, the upper end of the positioning part is rotatably connected to the clamping bracket, and the lower end of the positioning part is detachably connected to the workbench through the positioning slot.

7. The stud bolt machining conversion device according to claim 6, characterized in that: The positioning part can adopt a positioning pin, and the positioning groove can adopt a positioning square hole arranged on the front and rear sides of the slide groove on the upper surface of the workbench; the positioning square hole is vertically arranged, the positioning pin is cylindrical and the outer surface of the cylinder is inscribed in the left and right inner walls of the positioning square hole, the lower end of the positioning pin is inserted into the positioning square hole, and the lower end surface of the positioning pin forms an inclined surface at a set angle, and after the positioning pin is fully inserted into the positioning square hole, the upper end of the inclined surface is higher than the upper surface of the workbench; the upper end of the positioning pin is inserted into a fixed sleeve with an opening at the lower end and is connected to the fixed sleeve for sliding up and down, and the upper end of the fixed sleeve is rotatably connected to the lower end of the clamping bracket.

8. The stud bolt machining conversion device according to claim 1, characterized in that: A pulley is rotatably arranged at the inner end of each group of positioning screws, and the axis of the pulley shaft is arranged along the radial direction of the positioning screw.

9. The stud bolt machining conversion device according to claim 7, characterized in that: The outer side of the fixing sleeve is also connected with a handle.

10. The stud bolt machining conversion device according to claim 1, characterized in that: Among the three groups of threaded holes, one group of threaded holes is vertically arranged.

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