Thread rolling tool

Abstract

The utility model relates to a kind of thread rolling tool for bolt processing, it is characterized by, including positioning shaft and mounting bracket mounted on thread rolling machine, the mounting bracket is equipped with the clamping groove for thread rolling plate sliding, the mounting bracket is equipped with the insertion hole being communicated with clamping groove, the thread rolling plate is equipped with the positioning hole being opposite with insertion hole, the positioning shaft can be inserted insertion hole and positioning hole in turn, to fix thread rolling plate, the mounting bracket is equipped with the locking device corresponding with insertion hole, after positioning shaft inserts insertion hole and positioning hole, the locking device is used to carry out radial force to positioning shaft, to prevent positioning shaft from producing shift in insertion hole and positioning hole.The utility model has the following advantages and effects: after positioning shaft inserts positioning hole, radial force can be carried out to positioning shaft, to prevent positioning shaft from producing shift in positioning hole.

Description

Technical Field

[0001] This utility model relates to the field of bolt processing technology, specifically to a thread rolling fixture for bolt processing. Background Technology

[0002] A thread rolling machine is a device used for machining bolt threads. Its working principle involves the mutual movement between a movable pressure plate and a fixed pressure plate with threaded profiles, thereby machining the threads on the bolt blank located between the movable and fixed pressure plates. Furthermore, to meet the thread rolling requirements of different thread specifications, it is necessary to change to thread rolling dies with different thread profiles, i.e., thread rolling fixtures.

[0003] For example, Chinese patent document CN221603156U discloses a screw thread rolling fixture, belonging to the field of thread rolling machine technology. It mainly includes a mounting frame with a slot, a thread rolling plate slidably connected to the slot, a positioning shaft slidably connected to the mounting frame, and a positioning hole on the thread rolling plate that mates with the positioning shaft.

[0004] In the above technical solution, by setting the positioning shaft and positioning hole to cooperate, the convenience of thread rolling plate installation is improved, the displacement of the thread rolling plate installation position caused by vibration is prevented, and the stability of thread rolling plate installation is improved.

[0005] However, in the above technical solution, the thread rolling plate is fixed by plugging the positioning shaft and the positioning hole. In order to facilitate the insertion of the positioning shaft into the positioning hole, the diameter of the positioning hole needs to be slightly larger than the cross-sectional diameter of the positioning shaft. Therefore, during thread rolling, as the thread rolling plate slides back and forth, the positioning shaft will be subjected to force in the radial direction, causing the positioning shaft to move inside the positioning hole, which generates a lot of noise and affects the stability of fixing the thread rolling plate. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a thread rolling fixture for bolt processing, which can apply radial force to the positioning shaft after it is inserted into the positioning hole, so as to prevent the positioning shaft from moving within the positioning hole.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a thread rolling fixture for bolt processing, comprising a positioning shaft and a mounting bracket mounted on a thread rolling machine. The mounting bracket is provided with a slot for the thread rolling plate to slide into, and a insertion hole communicating with the slot. The thread rolling plate is provided with a positioning hole opposite to the insertion hole. The positioning shaft can be inserted into the insertion hole and the positioning hole in sequence to fix the thread rolling plate. The mounting bracket is provided with a locking device corresponding to the insertion hole. After the positioning shaft is inserted into the insertion hole and the positioning hole, the locking device is used to apply radial force to the positioning shaft to prevent the positioning shaft from moving within the insertion hole and the positioning hole.

[0008] The present invention is further configured such that: the locking device includes a clamping seat, the clamping seat has a through channel in the center, the channel is opposite to the insertion hole, one end of the clamping seat is provided with a claw, the claws are multiple and evenly distributed around the circumference, the outer wall of the claws is provided with a coupling sidewall formed inclined in the direction of the axis, a locking seat is fitted on the outer periphery of the clamping seat, the inner wall of the locking seat is provided with a connecting sidewall that can couple with the coupling sidewall, and the locking seat moves along the axis of the clamping seat to push the claws inward through the connecting sidewall.

[0009] The present invention is further configured such that: the outer periphery of the clamping seat is provided with an external thread, the external thread is located below the clamping jaw, and the inner periphery of the locking seat is provided with an internal thread that can form a threaded engagement with the external thread.

[0010] The present invention is further configured such that: the clamping seat is provided with a connecting plate at the opposite end of the clamping claw; the mounting bracket is provided with a first connecting hole surrounding the insertion hole; the connecting plate is provided with a second connecting hole opposite to the first connecting hole; and the first connecting hole and the second connecting hole are fixed together by a locking member.

[0011] The present invention is further configured such that a handle is provided at one end of the positioning shaft.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] Because the mounting bracket is equipped with a locking device corresponding to the insertion hole, after the positioning shaft is inserted into the insertion hole and the positioning hole, the locking device can apply radial force to the positioning shaft to prevent the positioning shaft from moving within the insertion hole and the positioning hole, while also preventing the positioning shaft from coming out of the insertion hole and the positioning hole. In this way, when the mounting bracket and the thread rolling plate make reciprocating linear motion to roll the workpiece, the radial force on the positioning shaft can be avoided, which would cause it to hit the inner wall of the mounting bracket and the thread rolling plate and generate a lot of noise. This reduces the noise level generated during thread rolling and improves the stability of the thread rolling plate when it is mounted on the mounting bracket. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention when connected to a thread rolling machine;

[0015] Figure 2 This is an enlarged structural diagram of point A in this utility model;

[0016] Figure 3 This is an exploded view of the present invention;

[0017] Figure 4 This is a schematic diagram of the connection of the locking device in this utility model;

[0018] Figure 5 This is a longitudinal cross-sectional view of the locking device in this utility model.

[0019] In the figure: positioning shaft 1; mounting bracket 2; slot 21; thread rolling plate 3; positioning hole 31; clamping seat 41; jaw 411; coupling side wall 412; external thread 413; locking seat 42; connecting side wall 421; connecting plate 5; second connecting hole 51; handle 6; thread rolling machine 100; grip sleeve 7. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] like Figures 1 to 5 As shown, this utility model discloses a thread rolling fixture for bolt processing, including a positioning shaft 1 and a mounting frame 2. The mounting frame 2 is mounted on a thread rolling machine 100 and is part of the thread rolling motion fixture. A thread rolling plate 3 is mounted on the mounting frame 2. The mounting frame 2 and the thread rolling plate 3 are driven to reciprocate linearly by the actuator on the thread rolling machine 100, thereby realizing the thread rolling operation of the screw. The above is the prior art in this field, and will not be described in detail below.

[0023] In this embodiment, the connection structure between the thread rolling plate 3 and the mounting frame 2 is as follows: the mounting frame 2 is provided with a slot 21 for the thread rolling plate 3 to slide into. The slot 21 can guide the installation position of the thread rolling plate 3 so that the thread rolling plate 3 can slide to the target position on the mounting frame 2. Furthermore, magnetic blocks can be embedded on the contact surfaces of the mounting frame 2 and the thread rolling plate 3. Through the mutual attraction of the magnetic blocks on the mounting frame 2 and the thread rolling plate 3, the thread rolling plate 3 can be initially fixed after it slides to the target position.

[0024] In addition, the mounting bracket 2 is provided with a plug hole that communicates with the slot 21, and the thread rolling plate 3 is provided with a positioning hole 31 that is opposite to the plug hole. After the thread rolling plate 3 slides to the target position, the positioning shaft 1 can be inserted into the plug hole and the positioning hole 31 in sequence. Since the insertion direction of the positioning shaft 1 is perpendicular to the sliding direction of the thread rolling plate 3 into the slot 21, the thread rolling plate 3 can be fixed after the positioning shaft 1 is inserted.

[0025] In this embodiment, to prevent the positioning shaft 1 from moving within the insertion hole and positioning hole 31 after it is inserted, a locking device corresponding to the insertion hole is provided on the mounting frame 2. After the positioning shaft 1 is inserted into the insertion hole and positioning hole 31, the locking device can apply radial force to the positioning shaft 1 to prevent it from moving within the insertion hole and positioning hole 31, while also preventing it from coming out of the insertion hole and positioning hole 31. In this way, when the mounting frame 2 and the thread rolling plate 3 perform reciprocating linear motion to roll the workpiece, the radial force on the positioning shaft 1 can be avoided, which would cause it to impact the inner wall of the mounting frame 2 and the thread rolling plate 3 and generate a lot of noise. This reduces the noise level generated during thread rolling and improves the stability of the thread rolling plate 3 when it is mounted on the mounting frame 2.

[0026] In this embodiment, the locking device includes a clamping seat 41 with a through channel at its center, which is opposite to the insertion hole so that the positioning shaft 1 can be inserted into the insertion hole and the positioning hole 31 in sequence. One end of the clamping seat 41 has a gripper 411, which is a plurality of grippers evenly distributed circumferentially. The clamping seat 41 is made entirely of plastic, thus possessing inherent toughness. The outer wall of the gripper 411 has a coupling sidewall 412 formed inclined towards the axial direction. A locking seat 42 is fitted around the outer periphery of the clamping seat 41. The inner wall of the locking seat 42 has... There is a connecting sidewall 421 that can be coupled with the coupling sidewall 412. After the positioning shaft 1 is inserted into the insertion hole and the positioning hole 31, the locking seat 42 is moved along the axis of the clamping seat 41, so that the connecting sidewall 421 can gradually couple with the coupling sidewall 412. In this way, the gripper 411 can be gradually pressed towards the axis of the clamping seat 41, so that the gripper 411 can tightly abut against the positioning shaft 1, so that the positioning shaft 1 is subjected to radial force, thereby achieving clamping and fixing of the positioning shaft 1. This can prevent the positioning shaft 1 from moving within the insertion hole and the positioning hole 31.

[0027] The locking seat 42 is movable along the axis of the clamping seat 41. The clamping seat 41 has an external thread 413 on its outer periphery, which is located below the jaw 411. The locking seat 42 has an internal thread on its inner periphery that can form a threaded engagement with the external thread 413. Thus, the jaw 411 can be made to abut against the outer periphery of the positioning shaft 1 simply by rotating the locking seat 42. This allows the positioning shaft 1 to be quickly locked after it is inserted into the insertion hole and the positioning hole 31. In addition, a gripping sleeve 7 is fitted and fixed on the outer periphery of the locking seat 42. The gripping sleeve 7 is integrally formed with the locking seat 42, and the outer periphery of the gripping sleeve 7 has a pattern to increase friction. This makes it easier to apply force when the locking seat 42 needs to be rotated, thus improving the convenience of rotating the locking seat 42.

[0028] In this embodiment, the connection structure between the clamping seat 41 and the mounting frame 2 is as follows: a connecting plate 5 is integrally provided on the side of the clamping seat 41 opposite to the clamping claw 411. The mounting frame 2 is provided with a first connecting hole surrounding the insertion hole. The connecting plate 5 is provided with a second connecting hole 51 opposite to the first connecting hole. After the first connecting hole and the second connecting hole 51 are aligned, they can be fixed by a locking member. The locking member can be a rivet. By pressing the rivet into the first connecting hole and the second connecting hole 51, an interference fit can be generated through deformation, thereby improving the connection stability between the clamping seat 41 and the mounting frame 2.

[0029] In this embodiment, a handle 6 is provided at one end of the positioning shaft 1. The positioning shaft 1 and the handle 6 can be fixed by welding. In this way, the various positioning shafts 1 can be connected into a whole by the handle 6, so that the various positioning shafts 1 can be driven to perform insertion and removal operations in a synchronized manner by the handle 6, thereby improving the convenience of disassembling and assembling the thread rolling plate 3.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A thread rolling fixture for bolt processing, characterized in that, The device includes a positioning shaft and a mounting bracket mounted on a thread rolling machine. The mounting bracket has a slot for the thread rolling plate to slide into, and a insertion hole communicating with the slot. The thread rolling plate has a positioning hole corresponding to the insertion hole. The positioning shaft can be inserted into the insertion hole and the positioning hole in sequence to fix the thread rolling plate. The mounting bracket has a locking device corresponding to the insertion hole. After the positioning shaft is inserted into the insertion hole and the positioning hole, the locking device is used to apply radial force to the positioning shaft to prevent the positioning shaft from moving within the insertion hole and the positioning hole.

2. The thread rolling fixture for bolt processing according to claim 1, characterized in that, The locking device includes a clamping seat with a through channel at its center, the channel being opposite to a insertion hole. One end of the clamping seat has a jaw, which is a plurality of jaws evenly distributed around the circumference. The outer wall of the jaw has a coupling sidewall that is inclined toward the axial direction. A locking seat is fitted around the outer periphery of the clamping seat. The inner wall of the locking seat has a connecting sidewall that can couple with the coupling sidewall. The locking seat moves along the axial direction of the clamping seat to push the jaws inward through the connecting sidewall.

3. The thread rolling fixture for bolt processing according to claim 2, characterized in that, The clamping seat has an external thread on its outer periphery, which is located below the clamping jaws. The locking seat has an internal thread on its inner periphery that can form a threaded engagement with the external thread.

4. The thread rolling fixture for bolt processing according to claim 2, characterized in that, The clamping seat has a connecting plate on the opposite side of the clamping claw. The mounting bracket has a first connecting hole surrounding the insertion hole. The connecting plate has a second connecting hole opposite to the first connecting hole. The first connecting hole and the second connecting hole are fixed together by a locking member.

5. The thread rolling fixture for bolt processing according to claim 1, characterized in that, One end of the positioning shaft is provided with a handle.

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