Spline shaft machining and positioning tool

Abstract

The utility model relates to the technical field of spline shaft machining, and discloses a spline shaft machining positioning tool which comprises a clamping table for clamping and fixing, the outer wall of the top end of the clamping table is fixedly connected with a connecting pipe, the inner wall of the connecting pipe is connected with a second tooth groove ring through a tension set, and the inner wall of the second tooth groove ring is fixedly connected with a rotating rod. The bottom end of the rotating rod is connected with a transmission gear through a transmission set, the workbench is used for bearing and supporting, the inner wall of the bottom end of the workbench is slidably connected with a push rod, the front side and the rear side of the left end of the push rod are connected with first wedging blocks through extrusion sets, and the top ends of the first wedging blocks are fixedly connected with connecting columns. According to the utility model, spline shafts with different diameters can be clamped by the device, and accurate positions and postures of the spline shafts in the machining process are ensured, so that the machining precision is improved, and the tool adopts a modular design, so that maintenance personnel can conveniently disassemble and assemble each module.

Description

Technical Field

[0001] The utility model relates to the technical field of spline shaft processing, in particular to a spline shaft processing and positioning tool. Background Art

[0002] The spline shaft is a type of mechanical transmission. It has the same function as the flat key, semicircular key and wedge key, which are all used to transmit mechanical torque. There is a longitudinal keyway on the surface of the shaft, and the rotating parts on the shaft also have corresponding keyways, which can keep rotating synchronously with the shaft. While rotating, some can also slide longitudinally on the shaft, such as the gearbox shift gear, and the spline shaft processing and positioning tooling is used to clamp the spline shaft to keep it stable during processing.

[0003] After searching, the publication number CN214162107U shows a positioning fixture for processing a spline gear shaft, which includes a base, a first clamping block, and a second clamping block. A hydraulic rod is installed on the upper surface of the base, and the output end of the hydraulic rod passes through the upper end of the base and is installed with a first slide bar. The first slider is embedded in the outer surface of the left end of the first slide bar. At the same time, the front end of the first slide bar is rotatably connected to the mounting bolt, which is installed with one end of the first connecting rod. The other end of the first connecting rod is rotatably connected to the front end surface of the base via the mounting bolt. The rear end of the first slider is rotatably installed with the second connecting rod via the mounting bolt. At the same time, the second connecting rod is rotatably connected to the outer surface of the second slide bar via the mounting bolt. The second slider is embedded in the outer surface of the right end of the first slide bar. In this positioning fixture for processing a spline gear shaft, the first and second sliders embedded in the first slide bar connected by the hydraulic rod control the sliding of the second and third connecting rods, thereby adjusting the positions of the first and second clamping blocks.

[0004] Based on the above patent, the existing positioning tooling in its background technology is prone to shaking during the processing due to the special appearance of the spline shaft, which leads to quality problems. When processing the spline shaft, the size of the fixture must be changed according to its size, which increases the workload of the operator. In this regard, to address this technical problem, this application proposes a spline shaft processing positioning tooling. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a spline shaft processing and positioning tool, so that the device can clamp spline shafts of different diameters, improve the processing accuracy, and adopt a modular design of the tool, so that maintenance personnel can easily disassemble and install each module.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A spline shaft machining and positioning tool, comprising:

[0008] A clamping platform for clamping and fixing, wherein the outer wall of the top of the clamping platform is fixedly connected to a connecting pipe, the inner wall of the connecting pipe is connected to a second toothed ring through a tension group, the inner wall of the second toothed ring is fixedly connected to a rotating rod, and the bottom end of the rotating rod is connected to a transmission gear through a transmission group;

[0009] The workbench serves as a load-bearing support, and the inner wall of the bottom end of the workbench is slidably connected to a push rod. The front and rear sides of the left end of the push rod are connected to the first fitting blocks through an extrusion group. The top of the first fitting block is fixedly connected to a connecting column, and the four sides of the outer wall of the top end of the connecting column are connected to fixed tubes through a clamping group.

[0010] Furthermore, the tension group includes a strong tension spring fixedly connected to the bottom end of the inner wall of the second tooth groove ring, the other end of the strong tension spring is fixedly connected to the top end of the inner wall of the connecting tube, and the outer wall of the rotating rod is sleeved on the inner wall of the connecting tube.

[0011] Furthermore, the top end of the inner wall of the connecting tube is fixedly connected to the first tooth groove ring, and the top end outer wall of the second tooth groove ring is detachably connected to the bottom end outer wall of the first tooth groove ring.

[0012] Furthermore, the transmission group includes a driving gear fixedly connected to the bottom end of the rotating rod, and the top end of the inner wall of the clamping platform is rotatably connected with a double-sided gear ring. The outer diameter of the driving gear is meshed with the outer diameter of the double-sided gear ring, and the inner diameter of the driving gear is meshed with the outer diameter of the transmission gear.

[0013] Furthermore, a clamping claw is fixedly connected to the bottom end of the transmission gear, and the bottom end of the clamping claw is rotatably connected to the bottom end of the inner wall of the clamping platform.

[0014] Furthermore, the extrusion group includes a return spring fixedly connected on both the front and rear sides of the right end of the push rod, the other end of the return spring is fixedly connected to the inner wall of the workbench, and the outer wall of the bottom end of the first fitting block is tightly attached to the outer wall of the top end of the second fitting block.

[0015] Furthermore, the clamping group includes a connecting cover fixedly connected to the top end of the inner cavity tube, and the four sides of the outer wall of the top end of the connecting column are rotatably connected with fixing claws, the inner wall of the opposite end of the fixing claw is sleeved on the inner wall of the connecting cover, and the top end of the fixed tube is fixedly connected to the front and rear sides of the bottom end of the clamping platform.

[0016] The utility model has the following beneficial effects:

[0017] 1. In the utility model, the spline shaft is clamped by the clamping claws, so that the device can clamp spline shafts of different diameters, ensuring the precise position and posture of the spline shaft during the processing, thereby improving the processing accuracy and reducing the change time. It not only improves the processing efficiency, but also ensures the stability and accuracy of the clamping process, providing reliable protection for subsequent processing procedures.

[0018] 2. In the utility model, the clamping table and the workbench are fixed by the fixing claws, which facilitates the assembly between the two, so that the operator can easily disassemble and install the clamping table. The modular design of the tooling allows maintenance personnel to easily disassemble and install each module, further improving maintenance efficiency and extending the overall service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of a spline shaft machining and positioning tool proposed in the utility model;

[0020] Figure 2 This is a half-section diagram of a clamping table for a spline shaft machining and positioning tooling proposed in the present invention;

[0021] Figure 3 This is a half-section view of the connecting pipe of a spline shaft processing and positioning tool proposed in the utility model;

[0022] Figure 4 This is a half-section diagram of a workbench for a spline shaft machining and positioning tooling proposed in the utility model;

[0023] Figure 5 This is a half-section view of the inner cavity tube of a spline shaft processing and positioning tool proposed by the utility model.

[0024] Legend:

[0025] 1. Clamping table; 2. Connecting tube; 3. Rotating rod; 4. Double-sided gear ring; 5. Transmission gear; 6. Clamping claw; 7. Workbench; 8. Push rod; 9. First toothed ring; 10. Second toothed ring; 11. Fixed tube; 12. Inner cavity tube; 13. Return spring; 14. Strong tension spring; 15. Driving gear; 16. Connecting column; 17. First fitting block; 18. Second fitting block; 19. Fixed claw; 20. Connecting cover. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Reference Figure 1-Figure 3The utility model provides an embodiment: a spline shaft processing and positioning tool, including a clamping platform 1 for clamping and fixing, the top outer wall of the clamping platform 1 is fixedly connected to a connecting pipe 2, a strong tension spring 14 is fixedly connected to the bottom end of the inner wall of the second tooth groove ring 10, the other end of the strong tension spring 14 is fixedly connected to the top of the inner wall of the connecting pipe 2, the outer wall of the rotating rod 3 is sleeved on the inner wall of the connecting pipe 2, the inner wall of the second tooth groove ring 10 is fixedly connected to the rotating rod 3, and the bottom end of the rotating rod 3 is connected to the transmission gear 5 through a transmission group, The top end of the inner wall of the connecting tube 2 is fixedly connected to the first toothed ring 9, the outer wall of the top end of the second toothed ring 10 is detachably connected to the outer wall of the bottom end of the first toothed ring 9, the bottom end of the rotating rod 3 is fixedly connected to the driving gear 15, and the top end of the inner wall of the clamping platform 1 is rotatably connected to the bilateral toothed ring 4, the outer diameter of the driving gear 15 is engaged with the outer diameter of the bilateral toothed ring 4, the inner diameter of the driving gear 15 is engaged with the outer diameter of the transmission gear 5, and the bottom end of the transmission gear 5 is fixedly connected to the clamping claw 6, and the bottom end of the clamping claw 6 is rotatably connected to the bottom end of the inner wall of the clamping platform 1.

[0028] Specifically: after the spline shaft is placed in the clamping platform 1, by pressing the rotating rod 3, the second toothed ring 10 can be disengaged from the first toothed ring 9 and the locked state can be released. At this time, the rotating rod 3 is rotated, and the driving gear 15 will transmit the double-sided toothed ring 4. In the process of the rotating rod 3 driving the driving gear 15 to move in height, the meshing effect between the double-sided toothed ring 4 and the driving gear 15 can be kept unchanged, thereby ensuring that the double-sided toothed ring 4 can stably transmit the transmission gear 5. As the rotating rod 3 rotates, the transmission gear 5 drives the clamping claw 6 to deflect inward. The inward deflection of the clamping claw 6 enables it to tightly surround and clamp the spline shaft. When the rotating rod 3 is released, the strong tension spring 14 will immediately take effect, pulling the second toothed ring 10 so that it is re-engaged in the first toothed ring 9. This action not only maintains the rotation effect of the rotating rod 3, but also prevents the double-sided toothed ring 4 from accidentally rotating again through the precise meshing between the second toothed ring 10 and the first toothed ring 9, thereby ensuring that the clamping effect of the clamping claw 6 is stable and reliable.

[0029] Reference Figure 4 and Figure 5 , the workbench 7 serves as a load-bearing support, and the inner wall of the bottom end of the workbench 7 is slidably connected to a push rod 8. The front and rear sides of the right end of the push rod 8 are fixedly connected to a return spring 13, and the other end of the return spring 13 is fixedly connected to the inner wall of the workbench 7. The outer wall of the bottom end of the first fitting block 17 is tightly attached to the outer wall of the top end of the second fitting block 18. The top of the first fitting block 17 is fixedly connected to a connecting column 16, and the top of the inner cavity tube 12 is fixedly connected to a connecting cover 20. The four sides of the outer wall of the top end of the connecting column 16 are rotatably connected, and the inner wall of the opposite end of the fixing claw 19 is sleeved on the inner wall of the connecting cover 20. The top of the fixed tube 11 is respectively fixedly connected to the front and rear sides of the bottom end of the clamping platform 1.

[0030] Specifically: when disassembling the clamping table 1, pull the push rod 8, this action will make the second fitting block 18 remove the squeezing force on the first fitting block 17, thereby releasing the fixation of the connecting column 16, and through the gravity of the connecting column 16 itself, the fixing claw 19 will shrink inward along the connecting cover 20. As the fixing claw 19 shrinks, the connection between the fixing tube 11 and the inner cavity tube 12 will be released, so that the clamping table 1 can be easily separated from the workbench 7. After the disassembly is completed, if necessary, To re-fix the clamping table 1 and the workbench 7, it is only necessary to re-fit the fixed tube 11 and the inner cavity tube 12. At this time, the push rod 8 is automatically reset under the elastic force of the reset spring 13, and the push rod 8 squeezes the first fitting block 17 through the second fitting block 18, so that the connecting column 16 rises along the inner cavity tube 12. As the connecting column 16 rises, the fixing claw 19 will open outward along the connecting cover 20, thereby fixing the inner side of the fixed tube 11, ensuring a tight connection between the clamping table 1 and the workbench 7.

[0031] Working principle: When the spline shaft is placed in the clamping table 1, the rotating rod 3 is pressed to make the second toothed ring 10 fall off from the first toothed ring 9, and then the rotating rod 3 is rotated to make the driving gear 15 transmit the double-sided toothed ring 4, so that the double-sided toothed ring 4 drives the transmission gear 5 to make the clamping claw 6 deflect inward, so that the clamping claw 6 clamps the spline shaft. After releasing the rotating rod 3, the strong tension spring 14 pulls the second toothed ring 10 to make it stuck in the first toothed ring 9, thereby maintaining the rotation effect of the rotating rod 3, making it convenient for the clamping claw 6 to clamp spline shafts of different diameters. When the clamping table 1 needs to be disassembled, the push rod 8 is pulled to make the second fitting block 18 remove the first fitting block 17 The extrusion pressure causes the fixing claw 19 to retract inwardly along the connecting cover 20 by the gravity of the connecting column 16 itself, so that the fixing tube 11 and the inner cavity tube 12 fall off, thereby separating the clamping platform 1 and the workbench 7. After the fixing tube 11 and the inner cavity tube 12 are fitted together, the push rod 8 is pushed under the elastic force of the reset spring 13, so that the push rod 8 squeezes the first fitting block 17 through the second fitting block 18, thereby causing the connecting column 16 to rise along the inner cavity tube 12, so that the connecting column 16 allows the fixing claw 19 to open outward along the connecting cover 20, so that the fixing claw 19 fixes the inner side of the fixing tube 11, making it easy to disassemble the clamping platform 1 and the workbench 7.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A spline shaft processing and positioning tool, characterized in that: include: A clamping platform (1) having a clamping and fixing function, wherein the outer wall of the top end of the clamping platform (1) is fixedly connected to a connecting tube (2), the inner wall of the connecting tube (2) is connected to a second toothed ring (10) via a tension group, the inner wall of the second toothed ring (10) is fixedly connected to a rotating rod (3), and the bottom end of the rotating rod (3) is connected to a transmission gear (5) via a transmission group; The workbench (7) serves as a load-bearing support, wherein the inner wall of the bottom end of the workbench (7) is slidably connected to a push rod (8), and the front and rear sides of the left end of the push rod (8) are connected to a first fitting block (17) through an extrusion group, and the top end of the first fitting block (17) is fixedly connected to a connecting column (16), and the four sides of the outer wall of the top end of the connecting column (16) are connected to a fixed tube (11) through a clamping group.

2. A spline shaft machining and positioning tool according to claim 1, characterized in that: The tension group includes a strong tension spring (14) fixedly connected to the bottom end of the inner wall of the second tooth groove ring (10), the other end of the strong tension spring (14) is fixedly connected to the top end of the inner wall of the connecting tube (2), and the outer wall of the rotating rod (3) is sleeved on the inner wall of the connecting tube (2).

3. The spline shaft machining and positioning tool according to claim 1, characterized in that: The top end of the inner wall of the connecting tube (2) is fixedly connected to a first toothed ring (9), and the top end outer wall of the second toothed ring (10) is detachably connected to the bottom end outer wall of the first toothed ring (9).

4. The spline shaft machining and positioning tool according to claim 1, characterized in that: The transmission group includes a driving gear (15) fixedly connected to the bottom end of the rotating rod (3), and the top end of the inner wall of the clamping platform (1) is rotatably connected to the double-sided gear ring (4). The outer diameter of the driving gear (15) is meshed with the outer diameter of the double-sided gear ring (4), and the inner diameter of the driving gear (15) is meshed with the outer diameter of the transmission gear (5).

5. The spline shaft machining and positioning tool according to claim 1, characterized in that: The bottom end of the transmission gear (5) is fixedly connected to a clamping claw (6), and the bottom end of the clamping claw (6) is rotatably connected to the bottom end of the inner wall of the clamping platform (1).

6. The spline shaft machining and positioning tool according to claim 1, characterized in that: The extrusion group includes a return spring (13) fixedly connected to both the front and rear sides of the right end of the push rod (8), the other end of the return spring (13) is fixedly connected to the inner wall of the workbench (7), and the outer wall of the bottom end of the first fitting block (17) is tightly attached to the outer wall of the top end of the second fitting block (18).

7. The spline shaft machining and positioning tool according to claim 1, characterized in that: The clamping group includes a connecting cover (20) fixedly connected to the top of the inner cavity tube (12), and the four sides of the outer wall of the top of the connecting column (16) are rotatably connected to the fixing claws (19), and the inner wall of the opposite end of the fixing claw (19) is sleeved on the inner wall of the connecting cover (20), and the top of the fixed tube (11) is fixedly connected to the front and back sides of the bottom of the clamping platform (1).

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