A thread rolling machine for shaft parts

Abstract

The application relates to a thread rolling machine for shaft parts, which comprises a base, a thread rolling mechanism, clamping mechanisms and an auxiliary feeding mechanism. The thread rolling mechanism comprises two symmetrically arranged thread rollers and a driving assembly for driving the thread rollers to move close to or away from each other. The driving assembly is fixedly connected to the base, and the thread rollers are rotationally connected to the driving assembly. The clamping mechanisms are arranged at the two ends of the thread rollers and at the middle position between the two thread rollers. The auxiliary feeding mechanism comprises a supporting block and an adjusting assembly. The supporting block is arranged between the clamping mechanisms, and the adjusting assembly is connected to the supporting block to adjust the relative distance between the supporting block and the clamping mechanisms. The application has the effect of assisting feeding and adapting to different shaft end diameters.

Description

Technical Field

[0001] This application relates to the technical field of machining, and in particular to a thread rolling machine for shaft parts. Background Technology

[0002] A thread rolling machine is a multi-functional cold extrusion forming machine tool. Within its rolling pressure range, it can perform thread rolling, straight knitting, and oblique knitting on workpieces in a cold state. Thread machining of shaft parts is a crucial step in the manufacturing process; high-quality thread machining ensures the stability and reliability of shaft parts during assembly and use.

[0003] In related technologies, existing thread rolling machines have significant defects when processing asymmetric shaft parts (such as stepped shafts) with varying outer diameters along the axial direction. Due to the offset of the part's center of gravity, traditional brackets are adapted to different shaft lengths, causing the part to roll or tilt when initially placed. Therefore, a thread rolling machine that solves the above problems is needed. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a thread rolling machine for shaft parts.

[0005] The present application provides a thread rolling machine for shaft parts, which adopts the following technical solution: A thread rolling machine for shaft parts, comprising: a base;

[0006] The thread rolling mechanism includes two symmetrically arranged thread rollers and a drive assembly that drives the thread rollers to move closer or further apart. The drive assembly is fixedly connected to the base, and the thread rollers are rotatably connected to the drive assembly.

[0007] A clamping mechanism is disposed at both ends of the wire rollers and located in the middle between the two wire rollers; and

[0008] An auxiliary feeding mechanism is provided, comprising a support block and an adjustment component. The support block is disposed between the clamping mechanisms, and the adjustment component is connected to the support block to adjust the relative distance between the support block and the clamping mechanisms.

[0009] By adopting the above technical solution, the base provides the mounting foundation for each component of the thread rolling machine; the two symmetrical thread rollers of the thread rolling mechanism move closer or further apart under the action of the drive assembly, enabling thread rolling of shaft parts; the clamping mechanism is located at the middle of both ends of the thread rollers, which can effectively clamp the shaft parts; the support block of the auxiliary feeding mechanism is located between the clamping mechanisms, and the adjustment component can adjust the relative distance between the support block and the clamping mechanism, which facilitates the feeding operation of shaft parts and can adapt to shaft parts of different sizes and shapes. The clamping mechanism and the auxiliary feeding mechanism work together to actively counteract the overturning moment caused by the sudden change in outer diameter of asymmetrical shaft parts (such as stepped shafts) in the initial feeding stage, thus preventing the parts from rolling or tilting.

[0010] Preferably, the drive assembly includes a first cylinder, a mounting frame, and a drive motor. The first cylinder is fixedly mounted on the base, the mounting frame is connected to the first cylinder, the wire roller is rotatably connected to the mounting frame, and the output shaft of the drive motor is keyed to the wire roller.

[0011] By adopting the above technical solution, the first cylinder can push the mounting frame to move, so that the wire rollers move closer or further apart, making it convenient to adjust the wire roller spacing to adapt to different processing requirements; the mounting frame provides mounting support for the wire rollers; the drive motor drives the wire rollers to rotate through a key connection, realizing the wire rolling processing of shaft parts.

[0012] Preferably, the clamping mechanism includes top blocks and a fastening assembly. The top blocks are provided with two parts, which are respectively connected to the base and the fastening assembly. The fastening assembly is used to adjust the relative distance between the top blocks.

[0013] By adopting the above technical solution, the base serves as the supporting foundation, and the drive component of the thread rolling mechanism can drive the wire rollers to move closer or further apart to achieve the thread rolling operation. The auxiliary feeding mechanism can adjust the relative distance between the support block and the clamping mechanism to facilitate feeding. On this basis, the clamping mechanism is equipped with a top block and a fastening component. By using the fastening component to adjust the relative distance between the two top blocks, the reliable clamping of shaft parts can be effectively achieved, ensuring the stability of the parts during the thread rolling process.

[0014] Preferably, the opposite end of the top block has a conical structure.

[0015] By adopting the above technical solution, the thread rolling machine for shaft parts has a base, a thread rolling mechanism, a clamping mechanism, and an auxiliary feeding mechanism, which can complete the thread rolling work of shaft parts. The thread rolling mechanism consists of a first cylinder, a mounting frame, a drive motor, and a thread roller, which can realize the movement of the thread roller towards and away from the roller and drive it to rotate. The clamping mechanism consists of a top block and a fastening assembly, which can fix the shaft parts. The opposite end of the top block has a conical structure, which is more conducive to accurate positioning and stable clamping of shaft parts, preventing the parts from shifting during the thread rolling process, and improving processing accuracy and stability.

[0016] Preferably, the fastening assembly includes a slide, a guide rod, a mounting base, and a second cylinder. The slide is fixedly mounted on the base, the guide rod is fixedly connected to the slide and arranged parallel to the slide, the mounting base is slidably connected to the guide rod, the second cylinder is fixedly mounted on the mounting base, and the top block is connected to the end of the second cylinder near the base.

[0017] By adopting the above technical solution, the thread rolling machine for shaft parts has a base, a thread rolling mechanism including two symmetrical thread rollers and a drive assembly, a clamping mechanism located at the middle of both ends of the thread rollers, and an auxiliary feeding mechanism with support blocks and adjustment components. The fastening assembly includes a slide, a guide rod, a mounting base, and a second cylinder. The slide is fixed on the base, the guide rod is parallel to the slide, and the mounting base can slide along the guide rod. The second cylinder is mounted on the mounting base and connected to the top block, which enables the clamping mechanism to adjust the relative distance between the top blocks more flexibly and stably, facilitating precise clamping of shaft parts and ensuring the smooth progress of thread rolling processing.

[0018] Preferably, the adjustment assembly includes a third cylinder, a connecting rod, and a movable base. The slide table has a sliding groove, the third cylinder is fixedly installed in the sliding groove, the movable base is configured to cooperate with the sliding groove, and the two ends of the connecting rod are respectively connected to the third cylinder and the movable base. The third cylinder is used to drive the movable base to move along the sliding groove.

[0019] By adopting the above technical solution, the base can serve as the supporting foundation of the equipment. The thread rolling mechanism can use two thread rollers to perform thread rolling on shaft parts under the action of the drive component. The clamping mechanism can clamp and position the shaft parts at the middle position of both ends of the thread rollers. The adjustment component of the auxiliary feeding mechanism includes a third cylinder, a connecting rod, and a movable base. The third cylinder is installed in the slide groove of the slide table and can drive the movable base to move along the slide groove through the connecting rod, thereby adjusting the relative distance between the support block and the clamping mechanism, which facilitates the feeding operation of shaft parts and can adapt to shaft parts of different sizes and shapes.

[0020] Preferably, the top of the support block has a V-shaped placement groove with the opening facing upwards, and the apex of the placement groove has an arc-shaped structure.

[0021] By adopting the above technical solution, shaft parts can be stably placed in the V-shaped placement groove of the support block, and the arc-shaped apex of the placement groove can avoid damaging the surface of the shaft parts, thus improving the support and protection effect of the shaft parts.

[0022] Preferably, a limiting block is provided at one end of the slide table near the base. The limiting block includes a buffer part and a mounting part. The buffer part is cylindrical and the mounting part is block-shaped.

[0023] By adopting the above technical solution, the thread rolling machine for shaft parts includes a base, a thread rolling mechanism with a thread roller and a drive assembly, a clamping mechanism set at the middle of both ends of the thread roller, and an auxiliary feeding mechanism including a support block and an adjustment assembly. The drive assembly consists of a first cylinder, a mounting frame and a drive motor. The clamping mechanism includes a top block and a fastening assembly. The fastening assembly consists of a slide, a guide rod, a mounting base and a second cylinder. The adjustment assembly includes a third cylinder, a connecting rod and a movable base. A limiting block with a cylindrical buffer part and a block-shaped mounting part is set at one end of the slide near the base, which can limit the movement range of related components. The buffer part can play a buffering role, reduce impact and vibration, and protect the equipment components.

[0024] Preferably, a cooling assembly is provided on the base, the cooling assembly including a cooling pipe disposed on the base and above the wire roller, and a nozzle disposed on the cooling pipe near the end of the wire roller.

[0025] By adopting the above technical solution, a cooling component is set on the base of the thread rolling machine for shaft parts. The cooling pipe is located above the wire roller and the nozzle is located at the end of the cooling pipe near the wire roller. This can cool the wire roller and shaft parts during the thread rolling process, prevent damage to the parts and wire roller due to frictional heat, and improve processing quality and equipment service life.

[0026] Preferably, it also includes a control box mounted on the base, through which the drive motor, the first cylinder, the second cylinder, and the third cylinder are controlled.

[0027] By adopting the above technical solution, the thread rolling machine for shaft parts can achieve centralized control. The operation of the drive motor, the first cylinder, the second cylinder and the third cylinder can be uniformly controlled through the control box, which improves the convenience of operation and the coordination of equipment operation.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The thread rolling mechanism adopts two symmetrically arranged thread rollers and drive components, which can flexibly adjust the gap between the thread rollers and quickly adapt to the processing of shaft parts of different sizes, thus improving the versatility of the equipment;

[0030] 2. The clamping mechanism is located at both ends of the wire roller and in the middle position, which can accurately clamp shaft parts, avoid machining errors, and improve product quality;

[0031] 3. The support block and adjustment components of the auxiliary feeding mechanism can adjust the relative distance with the clamping mechanism, which can well adapt to the feeding requirements of shaft parts of different specifications, and improve feeding efficiency and accuracy; Attached Figure Description

[0032] Figure 1This is a schematic diagram of the structure of a thread rolling machine for shaft parts provided in an embodiment of this application;

[0033] Figure 2 yes Figure 1 A partial sectional view;

[0034] Figure 3 This is a schematic diagram of the cooperation structure between the clamping mechanism and the auxiliary feeding mechanism;

[0035] Figure 4 This is a structural diagram of the support block.

[0036] Explanation of reference numerals in the attached drawings: 1. Base; 2. Thread rolling mechanism; 21. Thread roller; 22. Drive assembly; 221. First cylinder; 222. Mounting frame; 223. Drive motor; 3. Clamping mechanism; 31. Top block; 32. Fastening assembly; 321. Slide table; 3211. Slide groove; 322. Guide rod; 323. Mounting seat; 324. Second cylinder; 4. Auxiliary feeding mechanism; 41. Support block; 411. Placement groove; 42. Adjustment assembly; 421. Third cylinder; 422. Connecting rod; 423. Moving base; 5. Limiting block; 51. Buffer part; 52. Mounting part; 6. Cooling assembly; 61. Cooling pipe; 62. Nozzle; 7. Control box. Detailed Implementation

[0037] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0038] This application is applicable to shaft parts with asymmetrical overall dimensions, especially for shaft parts with different outer diameters along the axial direction. Since the length dimensions are also different for different outer diameters, when performing thread rolling on such shaft parts, an auxiliary feeding mechanism can be used for initial positioning to facilitate subsequent clamping operations.

[0039] refer to Figure 1 The thread rolling machine for shaft parts provided in this application includes a base 1, a thread rolling mechanism 2, a clamping mechanism 3, and an auxiliary feeding mechanism 4. The thread rolling mechanism 2, the clamping mechanism 3, and the auxiliary feeding mechanism 4 are all mounted on the base 1. The thread rolling mechanism 2 is used to perform thread rolling on shaft parts, the clamping mechanism 3 is used to fix the shaft parts, and the auxiliary feeding mechanism 4 is used to initially position the shaft parts. This configuration improves the efficiency and quality of thread rolling on shaft parts.

[0040] refer to Figure 1 and Figure 2Specifically, the thread rolling mechanism 2 includes two symmetrically arranged thread rollers 21 and a drive assembly 22 that drives the thread rollers 21 to move closer or further apart. The drive assembly 22 includes a first cylinder 221, a mounting frame 222, and a drive motor 223. The first cylinder 221 is fixedly mounted on the base 1 and can push the mounting frame 222 to move. The mounting frame 222 is connected to the first cylinder 221, and when the first cylinder 221 is activated, it drives the mounting frame 222 to move on the base 1. The thread rollers 21 are rotatably connected to the mounting frame 222, which acts as a stable support, allowing the thread rollers 21 to rotate smoothly. The output shaft of the drive motor 223 is keyed to the thread rollers 21, and the drive motor 223 provides the rotational power for the thread rollers 21. The first cylinder 221 here can also be replaced by an electric push rod, which can also achieve the function of pushing the mounting frame 222; the drive motor 223 can also be replaced by a hydraulic motor, which can provide greater torque and make the rotation of the wire roller 21 more stable.

[0041] refer to Figure 1 and Figure 3 Specifically, the clamping mechanism 3 is located at both ends of the wire roller 21 and in the middle between the two wire rollers 21. It includes a top block 31 and a fastening assembly 32. There are two top blocks 31, which are respectively connected to the base 1 and the fastening assembly 32. The opposite end of the top block 31 has a conical structure. This conical structure can better hold the end of the shaft-like parts, making their positioning more accurate.

[0042] The fastening assembly 32, used to adjust the relative distance between the top blocks 31, includes a slide 321, a guide rod 322, a mounting base 323, and a second cylinder 324. The slide 321 is fixedly mounted on the base 1, providing support for the movement of other components. The guide rod 322 is fixedly connected to the slide 321 and parallel to it, serving as a guide to allow the mounting base 323 to move along a fixed direction. The mounting base 323 can be bolted to different positions as needed. The mounting base 323 is slidably connected to the guide rod 322. The second cylinder 324 is fixedly mounted on the mounting base 323, and the top block 31 is connected to the end of the second cylinder 324 near the base 1. When the second cylinder 324 actuates, it moves the top block 31 closer to or further away from the shaft-like parts, achieving clamping and releasing of the shaft-like parts. The slide table 321 here can also be replaced by a slide rail, which can provide a smoother sliding effect; the second cylinder 324 can also be replaced by a combination of a stepper motor and a lead screw and nut pair, and the precise adjustment of the distance of the top block 31 can be achieved through the precise control of the stepper motor.

[0043] refer to Figure 1 , Figure 3 and Figure 4Specifically, the auxiliary feeding mechanism 4 includes a support block 41 and an adjusting component 42. The support block 41 is disposed between the clamping mechanisms 3, and the adjusting component 42 is connected to the support block 41 to adjust the relative distance between the support block 41 and the clamping mechanism 3. The adjusting component 42 includes a third cylinder 421, a connecting rod 422, and a movable base 423. The slide table 321 has a slide groove 3211, the third cylinder 421 is fixedly installed in the slide groove 3211, and the movable base 423 is configured to cooperate with the slide groove 3211. The two ends of the connecting rod 422 are respectively connected to the third cylinder 421 and the movable base 423. The third cylinder 421 is used to drive the movable base 423 to move along the slide groove 3211. The top of the support block 41 has a V-shaped placement groove 411 with the opening facing upward. The apex of the placement groove 411 is an arc-shaped structure. This V-shaped placement groove 411 can better adapt to shaft parts of different diameters, and the arc-shaped apex can avoid damage to the surface of the shaft parts. The third cylinder 421 here can be replaced by a linear motor, which can achieve more precise linear motion; the material of the support block 41 can be selected according to the material of the shaft parts. For example, for shaft parts with high hardness, the support block 41 can be made of hardened steel.

[0044] refer to Figure 1 In addition, a cooling assembly 6 is provided on the base 1. The cooling assembly 6 includes a cooling pipe 61 disposed on the base 1 and above the wire roller 21, and a nozzle 62 disposed on the end of the cooling pipe 61 near the wire roller 21. During the wire rolling process, the cooling pipe 61 can deliver coolant to the nozzle 62, which sprays the coolant onto the wire roller 21 and shaft parts, providing cooling and lubrication, extending the service life of the wire roller 21, and improving processing quality. The cooling pipe 61 can be made of rubber or metal; rubber has better flexibility, while metal is more durable. The nozzle 62 can be an atomizing nozzle, which can evenly spray the coolant onto the processing area.

[0045] refer to Figure 1 The thread rolling machine also includes a control box 7 mounted on the base 1. The drive motor 223, the first cylinder 221, the second cylinder 324, and the third cylinder 421 are controlled by the control box 7. The control box 7 precisely controls the actions of each component to achieve automated processing.

[0046] The implementation principle of a thread rolling machine for shaft parts according to an embodiment of this application is as follows: The clamping mechanism 3 is fixed at the middle position between the two thread rollers 21 to ensure the radial positioning accuracy of the shaft parts. The auxiliary feeding mechanism 4 dynamically adjusts the distance between the support block 41 and the clamping mechanism 3 through the adjusting component 42, so that the V-shaped placement groove 411 always adapts to the shaft end diameter. Specifically, when the same batch of shaft parts needs to be thread rolled, the mounting base 323 is fixed in a suitable position, and the position of the support block 41 is adjusted according to the distance of the shaft section of the part. After the support block 41 is in a suitable position, the shaft part is placed in the V-shaped placement groove 411 of the support block 41, and one end abuts against the tip of the top block 31 installed on the base 1. The second cylinder 324 is controlled to drive the top block 31 to approach the part and press against the part. After the part is fixed, the first cylinder 221 controls the two thread rollers 21 to approach each other and drives the motor 223 to drive the thread rollers 21 to rotate, thereby realizing the thread rolling process of the shaft parts.

[0047] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A thread rolling machine for shaft parts, characterized in that, include: abutment(1); The thread rolling mechanism (2) includes two symmetrically arranged thread rollers (21) and a drive assembly (22) for driving the thread rollers (21) to move closer or further away from each other. The drive assembly (22) is fixedly connected to the base (1), and the thread rollers (21) are rotatably connected to the drive assembly (22). A clamping mechanism (3) is provided at both ends of the wire roller (21) and located in the middle between the two wire rollers (21); as well as An auxiliary feeding mechanism (4) includes a support block (41) and an adjustment component (42). The support block (41) is disposed between the clamping mechanisms (3). The adjustment component (42) is connected to the support block (41) to adjust the relative distance between the support block (41) and the clamping mechanism (3).

2. The thread rolling machine for shaft parts according to claim 1, characterized in that: The drive assembly (22) includes a first cylinder (221), a mounting frame (222), and a drive motor (223). The first cylinder (221) is fixedly mounted on the base (1). The mounting frame (222) is connected to the first cylinder (221). The wire roller (21) is rotatably connected to the mounting frame (222). The output shaft of the drive motor (223) is keyed to the wire roller (21).

3. The thread rolling machine for shaft parts according to claim 2, characterized in that: The clamping mechanism (3) includes a top block (31) and a fastening assembly (32). The top block (31) has two parts that are respectively connected to the base (1) and the fastening assembly (32). The fastening assembly (32) is used to adjust the relative distance between the top blocks (31).

4. A thread rolling machine for shaft parts according to claim 3, characterized in that: The top block (31) has a conical structure at one of its opposite ends.

5. A thread rolling machine for shaft parts according to claim 3, characterized in that: The fastening assembly (32) includes a slide (321), a guide rod (322), a mounting base (323), and a second cylinder (324). The slide (321) is fixedly mounted on the base (1). The guide rod (322) is fixedly connected to the slide (321) and is arranged parallel to the slide (321). The mounting base (323) is slidably connected to the guide rod (322). The second cylinder (324) is fixedly mounted on the mounting base (323). The top block (31) is connected to the end of the second cylinder (324) near the base (1).

6. A thread rolling machine for shaft parts according to claim 5, characterized in that: The adjustment assembly (42) includes a third cylinder (421), a connecting rod (422), and a movable base (423). The slide table (321) has a slide groove (3211). The third cylinder (421) is fixedly installed in the slide groove (3211). The movable base (423) is configured to cooperate with the slide groove (3211). The two ends of the connecting rod (422) are respectively connected to the third cylinder (421) and the movable base (423). The third cylinder (421) is used to drive the movable base (423) to move along the slide groove (3211).

7. A thread rolling machine for shaft parts according to claim 6, characterized in that: The support block (41) has a V-shaped placement groove (411) with the opening facing upwards at the top, and the top corner of the placement groove (411) is an arc-shaped structure.

8. A thread rolling machine for shaft parts according to claim 6, characterized in that: The slide (321) is provided with a limiting block (5) at one end near the base (1). The limiting block (5) includes a buffer part (51) and a mounting part (52). The buffer part (51) is cylindrical and the mounting part (52) is block-shaped.

9. A thread rolling machine for shaft parts according to claim 1, characterized in that: A cooling assembly (6) is provided on the base (1). The cooling assembly (6) includes a cooling pipe (61) disposed on the base (1) and above the wire roller (21) and a nozzle (62) disposed on the cooling pipe (61) near the end of the wire roller (21).

10. A thread rolling machine for shaft parts according to claim 6, characterized in that: It also includes a control box (7) installed on the base (1), and the drive motor (223), the first cylinder (221), the second cylinder (324) and the third cylinder (421) are controlled by the control box (7).

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