Spiral thread rolling tool for grooved bolt

Abstract

The utility model relates to the technical field of thread rolling of grooved bolts, in particular to a thread rolling tool for grooved bolts, which comprises a workbench, a fixed thread rolling plate, a fixed frame, a movable thread rolling plate, an electric sliding table, a limit block, a bolt rough blank and a feeding mechanism. The fixed frame is fixedly arranged on the workbench, the movable thread rolling plate is arranged in the fixed frame in a sliding mode, the electric sliding table is fixedly arranged between the fixed frame and the movable thread rolling plate, and the limiting block is arranged to be in an arc shape. Therefore, the notch is always aligned with the limiting blocks in the feeding process, and the problem that the thread rolling effect is affected due to the fact that the notch in the surface of the bolt rough blank and the first limiting block on the movable frame are prone to dislocation in the feeding process in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of thread rolling of grooved bolts, in particular to a spiral thread rolling tool for grooved bolts. Background Art

[0002] A bolt is a cylindrical threaded fastener that is matched with a nut. It is a type of fastener consisting of a head and a screw (a cylinder with external threads). It needs to be matched with a nut to fasten two parts with through holes. During the bolt processing process, it is necessary to roll the spiral thread on it.

[0003] When using a thread rolling plate to roll grooved bolts, burrs are likely to appear at the groove. Since the thread rolling is a cold process, when the bolt is rolled and extruded, excess material in the thread rolling area is likely to accumulate at the groove, causing the groove to deform. The bolt needs to be corrected a second time, which not only wastes time, but also some products cannot be repaired, or the repair cost is too high, resulting in increased production costs for the company.

[0004] In order to solve the problem of notch deformation, after searching, the utility model patent with publication number CN219520361U in the prior art discloses a spiral thread rolling tool for grooved bolts, which belongs to the field of bolt technology and includes a processing table, and a fixed thread rolling plate is fixed on the top of the processing table. The utility model drives the movable part to push the bolt rough blank between the fixed frames backward through an electric push rod, and at the same time, the center of the back of the movable part and the center between the fixed frames are not in the same position. The movable part can be used to push the bolt rough blank while rotating the bolt rough blank, so that the notch of the bolt rough blank is clamped with the second limit block, which is convenient for adjusting the position of the bolt rough blank. At the same time, when the bolt rough blank contacts with the movable thread rolling plate, the first limit frame can be just clamped with the notch, so as to avoid deformation of the notch during the extrusion process due to the lack of support for the inner cavity of the notch by the first limit block when the movable thread rolling plate and the fixed thread rolling plate are processing the bolt rough blank.

[0005] When the above-mentioned prior art is in use, the center of the back side of the movable part and the center between the fixed frames are not in the same position, and the rough bolt blank can be rotated while being pushed by the movable part and the rough bolt blank. However, while pushing the rough bolt blank to move, since the center of the back side of the movable part and the center between the fixed frames are not in the same position, the force of the movable part pushing the rough bolt blank is unbalanced, which affects the degree of squeezing of the conveyor belts on both sides of the rough bolt blank during movement, thereby causing misalignment between the notch and the limit block, thereby affecting the engagement effect between the notch and the first limit block, and further affecting the processing effect of the rough bolt blank. Utility Model Content

[0006] The utility model provides a spiral thread rolling tool for grooved bolts, which solves the problem in the related art that during the feeding process, the groove on the surface of the bolt blank is easily misaligned with the first limiting block on the movable frame, thus affecting the thread rolling effect.

[0007] The technical scheme of the utility model is as follows: a spiral thread rolling tool for grooved bolts, comprising a workbench, a fixed thread rolling plate, a fixed frame, a movable thread rolling plate, an electric slide, a limit block, a bolt blank and a feeding mechanism;

[0008] The fixed thread rolling plate is fixedly arranged on the workbench;

[0009] The fixing frame is configured to be L-shaped, and the fixing frame is fixedly disposed on the workbench;

[0010] The movable thread rolling plate is slidably arranged in the fixed frame;

[0011] The electric slide is fixedly arranged between the fixed frame and the movable thread rolling plate;

[0012] The limit block is configured in an arc shape, and a plurality of the limit blocks are respectively fixedly disposed on the fixed thread rolling plate and the movable thread rolling plate;

[0013] The bolt blank is movably arranged between the fixed thread rolling plate and the movable thread rolling plate;

[0014] Wherein, a plurality of notches are provided on the bolt blank, and the notches are adapted to the shape of the limit block;

[0015] The feeding mechanism is arranged on the workbench and is used for feeding the bolt blank between the movable thread rolling plate and the fixed thread rolling plate.

[0016] Preferably, the feeding mechanism comprises:

[0017] A feeding seat, wherein two feeding seats are provided, and the two feeding seats are fixedly arranged on the workbench;

[0018] A material pushing groove, wherein two of the material pushing grooves are provided, and the two material pushing grooves are symmetrically opened on two side walls close to the material feeding seat;

[0019] A pusher block, the pusher block is arranged between the feed seats, and two ends of the pusher block extend into the pusher groove respectively and are slidably connected with the side wall of the pusher groove;

[0020] Positioning blocks, two of which are slidably arranged in each of the pushing grooves, and the positioning blocks are fixedly connected to the pushing blocks;

[0021] A positioning opening, wherein the positioning opening is provided on the positioning block, and a lead screw nut is fixedly disposed in the positioning opening;

[0022] A reciprocating screw, the reciprocating screw being rotatably disposed in the pushing groove, and the reciprocating screw passing through the screw nut;

[0023] A first motor, wherein the first motor is fixedly disposed on the feed seat, and an output end of the first motor is fixedly connected to the reciprocating screw;

[0024] A positioning mechanism is arranged on the feed seat and is used to position the rotation angle of the bolt blank.

[0025] Furthermore, the positioning mechanism includes:

[0026] Positioning grooves, each of the feed seats is provided with positioning grooves on both sides of the push groove;

[0027] Positioning posts, two of which are rotatably arranged in each of the positioning slots;

[0028] A conveyor belt, wherein the two positioning posts in each positioning groove are sleeved with the conveyor belt;

[0029] A locking block, a plurality of which are fixedly provided on the side wall of the conveyor belt;

[0030] Wherein, the engaging block is adapted to the shape of the notch;

[0031] An angle adjustment mechanism is arranged on the pushing block and is used to control the rotation of the bolt blank.

[0032] Furthermore, the angle adjustment mechanism includes:

[0033] A driving groove, the driving groove is arranged on a side wall of the pushing block close to the movable thread rolling plate;

[0034] A driving frame, wherein the driving frame is slidably disposed in the driving groove;

[0035] An anti-skid plate, the anti-skid plate being fixedly arranged on a side wall of the driving frame close to the movable thread rolling plate;

[0036] A reciprocating mechanism is arranged in the driving slot and is used to control the driving frame to reciprocate.

[0037] Furthermore, the reciprocating mechanism comprises:

[0038] A rack, the rack being fixedly disposed on an inner wall on an opposite side of the driving frame;

[0039] An incomplete gear, the incomplete gear being arranged in the driving groove for rotation corresponding to the driving frame, the incomplete gear being meshed with the rack;

[0040] A second motor, wherein the second motor is fixedly arranged on the pushing block, and an output end of the second motor is fixedly connected to the incomplete gear.

[0041] Based on the above solution, a gradient angle is provided on the side walls of the fixed thread rolling plate and the movable thread rolling plate on the side close to each other.

[0042] The working principle and beneficial effects of the utility model are:

[0043] 1. In the utility model, through the setting of the feeding mechanism, after the rough bolt is placed in the gap between the feeding seats, the operation of the first motor can drive the reciprocating screw to move, and then the cooperation of the reciprocating screw and the screw nut drives the pusher block to move, so that the bolt is pushed by the pusher block, so as to facilitate the feeding of the bolt;

[0044] 2. In the utility model, by setting the positioning mechanism, the movement of the driving frame and the anti-slide plate can drive the bolt blank to rotate simultaneously during the feeding process, so that the engagement block and the notch are engaged by the rotation of the bolt blank, so that the angle of the bolt blank is positioned during the feeding process;

[0045] 3. In the utility model, through the setting of the angle adjustment mechanism, the operation of the second motor can drive the incomplete gear to rotate, and at the same time, the meshing of the incomplete gear and the gear drives the driving frame and the anti-slip plate to move, and at the same time, the contact between the anti-slip plate and the bolt blank drives the bolt blank to rotate;

[0046] 4. In the utility model, through the arrangement of the workbench, the fixed thread rolling plate, the fixed frame, the movable thread rolling plate, the electric slide, the limit block, the bolt blank and the feeding mechanism, it is convenient to rotate the bolt blank during the feeding process so that the locking block extends into the slot, so that the slot is always aligned with the limit block during the feeding process, thereby solving the problem in the related art that the slot on the surface of the bolt blank is easily misaligned with the first limit block on the movable frame during the feeding process, thereby affecting the thread rolling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0048] Figure 1 It is a schematic diagram of the structure of the utility model;

[0049] Figure 2 This is a schematic diagram of the rough structure of the bolt of the utility model;

[0050] Figure 3 This is a schematic diagram of the structure of the feed seat of the utility model;

[0051] Figure 4 This is a schematic diagram of the structure of the feeding mechanism of the utility model;

[0052] Figure 5 It is a schematic cross-sectional structure diagram of the angle adjustment mechanism of the utility model.

[0053] In the figure: 1. workbench; 2. fixed thread rolling plate; 3. fixed frame; 4. movable thread rolling plate; 5. electric slide; 6. limit block; 7. bolt blank; 8. notch; 9. feed seat; 10. push block; 11. positioning block; 12. reciprocating screw; 13. first motor; 14. conveyor belt; 15. engaging block; 16. driving frame; 17. anti-skid plate; 18. rack; 19. incomplete gear; 21. gradient angle. DETAILED DESCRIPTION

[0054] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] like Figure 1~Figure 5 As shown, the present embodiment proposes a spiral thread rolling tool for grooved bolts, including a workbench 1, a fixed thread rolling plate 2, a fixed frame 3, a movable thread rolling plate 4, an electric slide 5, a limit block 6, a bolt rough blank 7 and a feeding mechanism, the fixed thread rolling plate 2 is fixedly arranged on the workbench 1, the fixed frame 3 is arranged in an L shape, the fixed frame 3 is fixedly arranged on the workbench 1, the movable thread rolling plate 4 is slidably arranged in the fixed frame 3, the electric slide 5 is fixedly arranged between the fixed frame 3 and the movable thread rolling plate 4, and the limit block 6 is arranged in an arc shape. shape, a plurality of limit blocks 6 are fixedly arranged on the fixed thread rolling plate 2 and the movable thread rolling plate 4, respectively, a bolt blank 7 is movably arranged between the fixed thread rolling plate 2 and the movable thread rolling plate 4, wherein a plurality of slots 8 are opened on the bolt blank 7, and the slots 8 are adapted to the shape of the limit blocks 6, a feeding mechanism is arranged on the workbench 1, and is used for feeding the bolt blank 7 between the movable thread rolling plate 4 and the fixed thread rolling plate 2, and a gradient angle 21 is opened on the side walls of the fixed thread rolling plate 2 and the movable thread rolling plate 4 on the side close to each other.

[0056] Specifically, after the bolt blank 7 is moved to the surface of the movable thread rolling plate 4 through the feeding mechanism, the limit block 6 extends into the slot 8, and the operation of the electric slide 5 drives the movable thread rolling plate 4 to move left and right. The bolt blank moves under the drive of the movable thread rolling plate 4, and then, with the cooperation of the fixed thread rolling plate 2 and the movable thread rolling plate 4, the bolt blank is threaded. Since the bolt blank can make the slot 8 and the limit block 6 engage during the rotation, the slot 8 is supported by the limit block 6, thereby ensuring that the shape of the slot 8 will not be deformed during the thread rolling process.

[0057] Among them, the feeding mechanism includes a feeding seat 9, a pushing groove, a pushing block 10, a positioning block 11, a positioning port, a reciprocating screw 12, a first motor 13 and a positioning mechanism. The feeding seat 9 is set to two, and the two feeding seats 9 are fixedly arranged on the workbench 1. The pushing groove is set to two, and the two pushing grooves are symmetrically opened on two side walls close to the feeding seat 9. The pushing block 10 is arranged between the feeding seats 9. The two ends of the pushing block 10 respectively extend into the pushing groove and are slidably connected to the side walls of the pushing groove. Two positioning blocks 11 are slidably arranged in each pushing groove, and the positioning block 11 is fixedly connected to the pushing block 10. The positioning port is opened on the positioning block 11, and a screw nut is fixedly arranged in the positioning port. The reciprocating screw 12 is rotatably arranged in the pushing groove, and the reciprocating screw 12 passes through the screw nut. The first motor 13 is fixedly arranged on the feeding seat 9, and the output end of the first motor 13 is fixedly connected to the reciprocating screw 12. The positioning mechanism is arranged on the feeding seat 9, which is used to position the rotation angle of the bolt blank 7.

[0058] Specifically, after the operator places the bolt blank 7 into the gap between the feed seats 9, the operator controls the first motor 13 to work. The operation of the first motor 13 can drive the reciprocating screw 12 to rotate, and then the push block 10 is driven to move through the cooperation of the reciprocating screw 12 and the screw nut, so that the bolt is pushed by the push block 10, thereby facilitating the feeding of the bolt.

[0059] Among them, the positioning mechanism includes a positioning groove, a positioning column, a conveyor belt 14, a clamping block 15 and an angle adjustment mechanism. Each feed seat 9 is provided with positioning grooves on both sides of the push groove. Two positioning columns are rotatably arranged in each positioning groove. A conveyor belt 14 is mounted on the two positioning columns in each positioning groove. A plurality of clamping blocks 15 are fixedly arranged on the side wall of the conveyor belt 14, wherein the clamping block 15 is adapted to the shape of the slot 8. The angle adjustment mechanism is arranged on the push block 10, which is used to control the rotation of the bolt blank 7.

[0060] Specifically, during the feeding process of the bolt blank 7, the angle adjustment mechanism can be used to control the rotation of the bolt blank 7, so that the locking block 15 can be extended into the slot 8 in coordination with the movement of the bolt blank 7. Then, when the pushing block 10 pushes the bolt for feeding, the conveyor belt 14 also moves accordingly, so that the slot 8 is always aligned with the limit block 6 until the bolt blank 7 moves to the surface of the movable thread rolling plate 4 and the limit block 6 is extended into the slot 8.

[0061] Among them, the angle adjustment mechanism includes a driving groove, a driving frame 16, an anti-slip plate 17 and a reciprocating mechanism. The driving groove is opened on the side wall of the push block 10 close to the movable thread rolling plate 4. The driving frame 16 is slidably set in the driving groove. The anti-slip plate 17 is fixedly set on the side wall of the driving frame 16 close to the movable thread rolling plate 4. The reciprocating mechanism is set in the driving groove for controlling the driving frame 16 to reciprocate. The reciprocating mechanism includes a rack 18, an incomplete gear 19 and a second motor. The rack 18 is fixedly set on the inner wall on the opposite side of the driving frame 16. The incomplete gear 19 is set in the driving groove for rotation corresponding to the driving frame 16. The incomplete gear 19 is meshed with the rack 18. The second motor is fixedly set on the push block 10, and the output end of the second motor is fixedly connected to the incomplete gear 19.

[0062] Specifically, the operation of the second motor can drive the incomplete gear 19 to rotate, and at the same time, the engagement of the incomplete gear 19 with the gear drives the drive frame 16 and the anti-skid plate 17 to move, and at the same time, the contact between the anti-skid plate 17 and the bolt blank 7 drives the bolt blank 7 to rotate.

[0063] In this embodiment, when in use, after the operator puts the bolt blank 7 into the gap between the feeding seats 9, the operator controls the first motor 13 to work, and the operation of the first motor 13 can drive the reciprocating screw 12 to rotate, and then the cooperation between the reciprocating screw 12 and the screw nut drives the push block 10 to move, so that the bolt is pushed by the push block 10, so as to facilitate the feeding of the bolt. During the feeding process, the operation of the second motor can drive the incomplete gear 19 to rotate, and at the same time, the engagement of the incomplete gear 19 with the gear drives the drive frame 16 and the anti-skid plate 17 to move, and at the same time, the contact between the anti-skid plate 17 and the bolt blank 7 drives the bolt blank 7 to rotate, so that the bolt blank 7 cooperates with the rotation of the bolt blank 7 during the movement to make the engaging block 15 extends into the slot 8, and then the movement of the anti-slip plate 17 will no longer drive the bolt blank 7 to rotate, so that when the pushing block 10 pushes the bolt to feed, the conveyor belt 14 also moves accordingly, so that the slot 8 is always aligned with the limit block 6, until the bolt blank 7 moves to the surface of the movable thread rolling plate 4 and the limit block 6 extends into the slot 8. At this time, the operation of the electric slide 5 drives the movable thread rolling plate 4 to move left and right, and the bolt blank moves under the drive of the movable thread rolling plate 4, and then, with the cooperation of the fixed thread rolling plate 2 and the movable thread rolling plate 4, the bolt blank is threaded. Because the bolt blank can make the slot 8 engage with the limit block 6 during the rotation process, the slot 8 is supported by the limit block 6, thereby ensuring that the shape of the slot 8 will not be deformed during the thread rolling process.

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

Claims

1. A spiral thread rolling tool for grooved bolts, characterized in that: include: Workbench (1); A fixed thread rolling plate (2), wherein the fixed thread rolling plate (2) is fixedly arranged on the workbench (1); A fixed frame (3), the fixed frame (3) being arranged in an L shape, and the fixed frame (3) being fixedly arranged on the workbench (1); A movable thread rolling plate (4), wherein the movable thread rolling plate (4) is slidably arranged in the fixed frame (3); An electric slide (5), the electric slide (5) being fixedly arranged between the fixed frame (3) and the movable thread rolling plate (4); A limit block (6), the limit block (6) being arranged in an arc shape, and a plurality of the limit blocks (6) being fixedly arranged on the fixed thread rolling plate (2) and the movable thread rolling plate (4); A bolt blank (7), the bolt blank (7) being movably arranged between the fixed thread rolling plate (2) and the movable thread rolling plate (4); The bolt blank (7) is provided with a plurality of notches (8), and the notches (8) are adapted in shape to the limiting block (6); A feeding mechanism, the feeding mechanism being arranged on the workbench (1) and being used for feeding the bolt blank (7) between the movable thread rolling plate (4) and the fixed thread rolling plate (2); Wherein, the feeding mechanism comprises: A feeding seat (9), wherein two feeding seats (9) are provided, and the two feeding seats (9) are fixedly arranged on the workbench (1); A material pushing groove, wherein two of the material pushing grooves are provided, and the two material pushing grooves are symmetrically opened on two adjacent side walls of the feed seat (9); A pusher block (10), the pusher block (10) being arranged between the feed seats (9), the two ends of the pusher block (10) respectively extending into the pusher groove and being slidably connected to the side wall of the pusher groove; Positioning blocks (11), two of the positioning blocks (11) are slidably disposed in each of the pushing grooves, and the positioning blocks (11) are fixedly connected to the pushing blocks (10); A positioning opening, the positioning opening being formed on the positioning block (11), a lead screw nut being fixedly disposed in the positioning opening; A reciprocating screw (12), the reciprocating screw (12) being rotatably disposed in the material pushing groove, the reciprocating screw (12) penetrating the screw nut; a first motor (13), the first motor (13) being fixedly disposed on the feed seat (9), the output end of the first motor (13) being fixedly connected to the reciprocating screw (12); a positioning mechanism, the positioning mechanism being arranged on the feed seat (9) and being used to position the rotation angle of the bolt blank (7); Wherein, the positioning mechanism comprises: Positioning grooves, each of the feed seats (9) is provided with positioning grooves on both sides of the push groove; Positioning posts, two of which are rotatably arranged in each of the positioning slots; A conveyor belt (14), wherein the two positioning posts in each positioning groove are sleeved with the conveyor belt (14); A snap-fit ​​block (15), a plurality of the snap-fit ​​blocks (15) being fixedly disposed on the side wall of the conveyor belt (14); Wherein, the engaging block (15) is adapted to the shape of the notch (8); An angle adjustment mechanism, the angle adjustment mechanism being arranged on the pushing block (10) and being used for controlling the rotation of the bolt blank (7); Wherein, the angle adjustment mechanism comprises: A driving groove, the driving groove being formed on a side wall of the pushing block (10) close to the movable thread rolling plate (4); A driving frame (16), the driving frame (16) being slidably disposed in the driving groove; An anti-skid plate (17), the anti-skid plate (17) being fixedly arranged on a side wall of the driving frame (16) close to the movable thread rolling plate (4); A reciprocating mechanism, the reciprocating mechanism being arranged in the driving slot and being used for controlling the driving frame (16) to perform reciprocating movement.

2. A spiral thread rolling tool for grooved bolts according to claim 1, characterized in that: The reciprocating mechanism comprises: a rack (18), the rack (18) being fixedly arranged on an inner wall on an opposite side of the driving frame (16); an incomplete gear (19), the incomplete gear (19) being arranged in the driving groove so as to rotate correspondingly to the driving frame (16), the incomplete gear (19) being meshed with the rack (18); A second motor, wherein the second motor is fixedly arranged on the pushing block (10), and an output end of the second motor is fixedly connected to the incomplete gear (19).

3. A spiral thread rolling tool for grooved bolts according to claim 2, characterized in that: A gradient angle (21) is provided on the side walls of the fixed thread rolling plate (2) and the movable thread rolling plate (4) on the side close to each other.

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