Straightening device for spline machining of cross shaft type universal coupling

Abstract

The utility model relates to the technical field of universal coupling spline machining, and discloses a straightening device for machining a cross shaft type universal coupling spline, which comprises a workbench, and two vertical plates are fixedly connected to the surface of the workbench. According to the straightening device for machining the spline of the cross shaft type universal coupling, through the arrangement of the clamping mechanism, when the straightening device is used, a universal coupling body is placed between two clamping blocks, a driving motor on one side is started, and the driving motor drives a positive and negative lead screw at the tail end to rotate; then, moving plates in threaded connection with the surfaces of the positive and negative screw rods move relatively until friction blocks arranged on one sides of clamping blocks are firmly attached to the surface of the universal coupling body, and a hydraulic rod and a straightening arc-shaped block which are arranged at the top of the universal coupling body are matched; therefore, the effect of automatically straightening the spline on the surface of the universal coupling body is achieved, manual operation is not needed, and the straightening efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of universal joint spline machining technology, and in particular to a straightening device for machining splines of cross-type universal joints. Background Technology

[0002] Universal joints, as key components in mechanical transmission, play an indispensable role in numerous industrial equipment and mechanical systems. They enable reliable and continuous power transmission even when two shafts are at a certain angle, and are widely used in the automotive, aerospace, machine tool, metallurgical equipment, and various engineering machinery industries. In automotive transmission systems, universal joints connect the gearbox and drive axle, ensuring the smooth and efficient transmission of engine power to the wheels and guaranteeing normal vehicle operation. In the aerospace field, they provide precise and stable power transmission to various moving parts of aircraft, which is crucial for flight safety and performance. In spline machining, the quality of the raw material and the distribution of internal stress significantly affect the deformation of the spline shaft. Residual stress may be generated during the rolling process of steel, and this residual stress is released during subsequent processing, causing the spline shaft to bend. Furthermore, the inhomogeneity of the raw material, such as differences in hardness and inconsistent metallographic structure, can also lead to different deformation amounts in different parts during processing, thus causing the spline shaft to bend.

[0003] Traditional straightening methods, such as manual hammering, are not only labor-intensive but also slow. Straightening a single spline shaft can take a long time, severely impacting production efficiency. Therefore, a straightening device for processing splines on cross-shaped universal couplings is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a straightening device for processing splines of cross-type universal couplings, so as to solve the problem of traditional straightening methods mentioned in the background art, such as manual hammering straightening. Manual straightening is not only labor-intensive, but also slow. Straightening a spline shaft may take a long time, which seriously affects production efficiency.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: A straightening device for processing splines on a cross-shaped universal coupling, comprising a worktable, two vertical plates fixedly connected to the surface of the worktable, a motor housing fixedly connected to the surface of the vertical plates, a clamping mechanism fixedly connected inside the motor housing, a support frame fixedly connected to one edge of the top surface of the worktable, a hydraulic rod fixedly connected to the top of the support frame, a connecting block fixedly connected to the output end of the hydraulic rod, a straightening arc block inserted inside the connecting block, matching limiting holes provided inside the connecting block and the straightening arc block, an installation mechanism inserted inside the limiting holes, the clamping mechanism comprising a drive motor fixedly connected inside the motor housing, a positive and negative lead screw fixedly connected to the output end of the drive motor, a moving plate threadedly connected to the surface of the positive and negative lead screw, two clamping blocks fixedly connected to the top of the moving plate, and friction blocks fixedly connected to the inner wall of the clamping blocks; the installation mechanism comprising a pin inserted into the limiting hole, two limiting posts fixedly connected to the end of the pin.

[0008] As a further embodiment of this utility model, a universal coupling body is attached to one side of the friction block, and a number of spline grooves are provided on the top of the universal coupling body. The spline grooves serve to adapt to the straightening groove.

[0009] As a further embodiment of this utility model, the straightening arc block has a cavity inside, and the cavity is provided with a straightening groove that matches the spline groove. The cavity serves to install the straightening groove.

[0010] As a further embodiment of this utility model, a limiting hole is provided on one side of the movable plate, and a limiting rod is slidably connected inside the limiting hole. The limiting rod serves to limit the movement of the movable plate.

[0011] As a further embodiment of this utility model, the bottom of the workbench is fixedly connected with four support legs, and each support leg is fixedly connected with a reinforcing rib on both sides. The reinforcing ribs improve the structural strength of the support legs.

[0012] As a further embodiment of this utility model, a PLC controller is fixedly connected to the surface of the upright plate. One side of the PLC controller is electrically connected to the surface of the drive motor via a power cord. The PLC controller controls the start and stop of the drive motor.

[0013] As a further embodiment of this utility model, the end of the positive and negative lead screw is rotatably connected to a rotating shaft, which is fixedly connected to the surface of the vertical plate. The positive and negative lead screws are designed to drive the moving plate to move.

[0014] (III) Beneficial Effects

[0015] This utility model provides a straightening device for machining splines in a cross-shaft universal coupling, which has the following advantages:

[0016] 1. This straightening device for spline machining of universal joints utilizes a clamping mechanism. During use, the universal joint body is placed between two clamping blocks. The drive motor on one side is activated, causing the end screws to rotate. This, in turn, causes relative movement of the moving plates connected by the threads on the screw surfaces, until the friction block on one side of the clamping block firmly adheres to the surface of the universal joint body. Combined with the hydraulic rod and straightening arc block on the top of the universal joint body, this achieves automated straightening of the splines on the surface of the universal joint body, eliminating the need for manual operation and improving straightening efficiency.

[0017] 2. This straightening device for spline machining of the cross-shaft universal coupling, through the setting of the installation mechanism, allows for the installation and disassembly of the straightening arc block. By rotating the pin on the upper surface of the straightening arc block, the two limiting posts at the end of the pin rotate to the appropriate position. At this time, the limiting posts form a passage with the limiting holes opened on the surface of the straightening arc block and the connecting block. Simply pulling the pin outward can separate the straightening arc block, thereby achieving the effect of quickly installing and disassembling the straightening arc block, improving the installation efficiency of the installers, and facilitating its replacement and maintenance in the future. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation mechanism structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the friction block structure of this utility model.

[0022] In the diagram: 1. Workbench; 2. Vertical plate; 3. Motor housing; 4. Clamping mechanism; 401. Drive motor; 402. Positive and negative lead screws; 403. Moving plate; 404. Clamping block; 405. Friction block; 5. Frame; 6. Hydraulic rod; 7. Connecting block; 8. Straightening arc block; 9. Installation mechanism; 901. Pin; 902. Limiting post; 10. Universal coupling body; 11. Limiting rod; 12. Support leg; 13. Reinforcing rib; 14. PLC controller. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1 to 4 This utility model provides a technical solution: a straightening device for processing splines on a cross-shaft universal coupling, including a worktable 1. Two vertical plates 2 are fixedly connected to the surface of the worktable 1, and a motor housing 3 is fixedly connected to the surface of the vertical plates 2. A clamping mechanism 4 is fixedly connected inside the motor housing 3. Through the clamping mechanism 4, the splines on the surface of the universal coupling body 10 can be automatically straightened without manual operation, thus improving the straightening efficiency. A support frame 5 is fixedly connected to one edge of the top surface of the worktable 1, and a hydraulic rod 6 is fixedly connected to the top of the support frame 5. A connecting block 7 is fixedly connected to the output end of the hydraulic rod 6. A straightening arc block 8 is inserted into the connecting block 7. Both the connecting block 7 and the straightening arc block 8 have matching limiting holes inside, and an installation mechanism 9 is inserted into the limiting holes. Through the installation mechanism 9, the straightening arc block 8 can be quickly installed and disassembled, improving the installation efficiency of the installers and facilitating its replacement and maintenance later.

[0025] The clamping mechanism 4 includes a drive motor 401 fixedly connected inside the motor housing 3. The output end of the drive motor 401 is fixedly connected to a positive and negative lead screw 402. A moving plate 403 is threadedly connected to the surface of the positive and negative lead screw 402. Two clamping blocks 404 are fixedly connected to the top of the moving plate 403. A friction block 405 is fixedly connected to the inner wall of the clamping block 404.

[0026] The mounting mechanism 9 includes a pin 901 that is inserted into the limiting hole, and two limiting posts 902 are fixedly connected to the end of the pin 901.

[0027] One side of the friction block 405 is connected to the universal coupling body 10. The top of the universal coupling body 10 is provided with several spline grooves. The spline grooves are designed to fit the straightening groove.

[0028] The straightening arc block 8 has a cavity inside, and a straightening groove that matches the spline groove is set inside the cavity. The cavity serves to install the straightening groove.

[0029] A limiting hole is provided on one side of the movable plate 403, and a limiting rod 11 is slidably connected inside the limiting hole. The limiting rod 11 serves to limit the movement of the movable plate 403.

[0030] The bottom of the workbench 1 is fixedly connected with four support legs 12, and each support leg 12 is fixedly connected with a reinforcing rib 13 on both sides. The reinforcing rib 13 improves the structural strength of the support leg 12.

[0031] A PLC controller 14 is fixedly connected to the surface of the upright plate 2. One side of the PLC controller 14 is electrically connected to the surface of the drive motor 401 through a power line. The PLC controller 14 controls the start and stop of the drive motor 401.

[0032] The end of the positive and negative lead screw 402 is rotatably connected to a rotating shaft, which is fixedly connected to the surface of the vertical plate 2. The positive and negative lead screw 402 is used to drive the moving plate 403 to move.

[0033] In this invention, the working steps of the device are as follows:

[0034] First step: When using, place the universal coupling body 10 in the middle of the two clamping blocks 404, start the drive motor 401 on one side, drive motor 401 drives the end positive and negative screws 402 to rotate, thereby causing the moving plate 403 threaded on the surface of the positive and negative screws 402 to move relative to each other, until the friction block 405 set on one side of the clamping block 404 is firmly attached to the surface of the universal coupling body 10, in conjunction with the hydraulic rod 6 and straightening arc block 8 set on the top of the universal coupling body 10;

[0035] The second step: When installing and removing the straightening arc block 8, rotate the pin 901 on the upper surface of the straightening arc block 8 so that the two limiting posts 902 at the end of the pin 901 rotate to the appropriate position. At this time, the limiting posts 902 form a passage with the limiting holes opened on the surface of the straightening arc block 8 and the connecting block 7. Simply pull the pin 901 outward to separate the straightening arc block 8.

[0036] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A straightening device for spline machining of a cross shaft type universal joint, comprising a worktable (1), characterized in that: Two upright plates (2) are fixedly connected to the surface of the workbench (1). A motor housing (3) is fixedly connected to the surface of the upright plates (2). A clamping mechanism (4) is fixedly connected inside the motor housing (3). A support frame (5) is fixedly connected to one edge of the top surface of the workbench (1). A hydraulic rod (6) is fixedly connected to the top of the support frame (5). A connecting block (7) is fixedly connected to the output end of the hydraulic rod (6). A straightening arc block (8) is inserted into the connecting block (7). Both the connecting block (7) and the straightening arc block (8) have matching limiting holes. An installation mechanism (9) is inserted into the limiting holes. The clamping mechanism (4) includes a drive motor (401) fixedly connected inside the motor housing (3). The output end of the drive motor (401) is fixedly connected to a positive and negative lead screw (402). The surface of the positive and negative lead screw (402) is threadedly connected to a moving plate (403). The top of the moving plate (403) is fixedly connected to two clamping blocks (404). The inner wall of the clamping block (404) is fixedly connected to a friction block (405). The mounting mechanism (9) includes a pin (901) inserted into the limiting hole, and two limiting posts (902) are fixedly connected to the end of the pin (901).

2. The straightening device for spline machining of a cross axle type universal joint according to claim 1, characterized in that: One side of the friction block (405) is connected to the universal coupling body (10), and the top of the universal coupling body (10) is provided with several spline grooves.

3. The straightening device for spline machining of a cross-shaft universal coupling according to claim 1, characterized in that: The straightening arc block (8) has a cavity inside, and the cavity is provided with a straightening groove that matches the spline groove.

4. The straightening device for spline machining of a cross axle type universal joint according to claim 1, characterized in that: A limiting hole is provided on one side of the movable plate (403), and a limiting rod (11) is slidably connected inside the limiting hole.

5. The straightening device for spline machining of a cross axle type universal joint according to claim 1, characterized in that: The bottom of the workbench (1) is fixedly connected to four support legs (12), and the two sides of each support leg (12) are fixedly connected to reinforcing ribs (13).

6. The straightening device for spline machining of a cardan shaft type universal joint according to claim 1, characterized in that: A PLC controller (14) is fixedly connected to the surface of the upright plate (2), and one side of the PLC controller (14) is electrically connected to the surface of the drive motor (401) via a power line.

7. A straightening device for spline machining of a cross-shaft universal coupling according to claim 1, characterized in that: The end of the positive and negative lead screw (402) is rotatably connected to a rotating shaft, which is fixedly connected to the surface of the vertical plate (2).

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