Centering shaft pressing mechanism

Abstract

The utility model discloses a centering shaft pressing mechanism, which relates to the technical field of generator production, and comprises an equipment base, a pressing positioning module, a jacking positioning module, a workpiece jig and a servo electric cylinder, the pressing positioning module can press a workpiece downwards, the jacking positioning module can jack the workpiece upwards, the workpiece jig can bear the workpiece to be pressed, and the servo electric cylinder is arranged on the equipment base. A press-fitting head is installed at the telescopic end of the servo electric cylinder and can apply pressure to a workpiece. According to the centering shaft pressing mechanism, the downward pressing positioning module and the jacking positioning module which are arranged on the centering shaft pressing mechanism, the claw level can be clamped and positioned in a mutual approaching mode before press fitting, in the claw level positioning process, the downward pressing positioning module can also position a shaft rod, press fitting is conducted after double positioning, and the positioning efficiency is greatly improved. And the error of the obtained claw-level shaft rod combination body is within an allowable range, so that the yield of press fitting is improved, and the quality of a generator is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of generator production, in particular to a centering and pressing shaft mechanism. Background Art

[0002] During the generator manufacturing process, the claws and shaft are core components, and their quality and assembly precision directly impact the overall performance and stability of the generator. Traditionally, the claw and shaft assembly process typically involves two main steps: pre-assembly and press-fitting. Pre-assembly involves manual assembly of the claws and shaft, followed by transfer to the press for final press-fitting.

[0003] However, existing technologies have significant limitations in this process. Especially after pre-assembly, due to the lack of effective positioning methods, the relative position between the claw stage and the shaft rod relies solely on the pre-assembly process performed by the staff, which makes it difficult to ensure a precise match between the two. Therefore, when entering the press-fitting stage, the error problem caused by position mismatch becomes particularly prominent. This error not only affects the quality of the claw stage and shaft rod combination, but also directly leads to a low press-fitting yield rate. In actual production, a large number of substandard products need to be reworked or scrapped, which not only increases production costs but also seriously affects the production efficiency and market competitiveness of the generator.

[0004] In summary, in view of the problems of inaccurate positioning, large errors and low yield rate in the existing technology during the claw stage and shaft press assembly process, a new technical solution is urgently needed to improve this assembly process in order to improve the production quality and efficiency of the generator. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a centering and pressing mechanism to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a centering and pressing mechanism, including a device base, and also including:

[0007] A downward pressing positioning module, which is installed on the upper part of the equipment base and can press the workpiece downward;

[0008] A lifting and positioning module, which is located inside the pressing and positioning module and can lift the workpiece;

[0009] A workpiece jig, located on the upper part of the lifting and positioning module, capable of carrying the workpiece to be pressed;

[0010] A servo electric cylinder, wherein a pressing head is installed at the telescopic end of the servo electric cylinder, and can apply pressure to the workpiece.

[0011] Furthermore, the downward pressure positioning module includes a plurality of columns installed on the upper part of the equipment base, the top ends of the plurality of columns are commonly connected to a top plate, and the outsides of the plurality of columns are commonly slidably connected to a lifting plate, the bottom end of the top plate is installed with a downward pressure driving cylinder, the telescopic end of the downward pressure driving cylinder is connected to the lifting plate, a through hole is reserved in the middle of the lifting plate, and a clamping cylinder is installed in the middle of the lifting plate adjacent to the through hole.

[0012] Furthermore, the jacking and positioning module includes a jacking drive assembly and a hard support assembly installed on the top of the equipment base. The hard support assembly is located below the jacking drive assembly and can support the jacking drive assembly. A jig lifting assembly is installed on the upper part of the jacking drive assembly.

[0013] Furthermore, the jacking drive assembly includes a jacking drive cylinder and a plurality of guide shafts symmetrically installed on the top of the equipment base, and the telescopic end of the jacking drive cylinder and the top of the guide shaft are commonly connected to a jacking plate.

[0014] Furthermore, a limit seat is installed on the top of the lifting plate, the interior of the limit seat is movably connected to a push rod, the exterior of the push rod is respectively sleeved with a retaining ring and a spring, and the spring abuts between the limit seat and the retaining ring.

[0015] Furthermore, the jig lifting assembly includes a lifting drive cylinder and several guide shafts 2 symmetrically installed on the top of the jacking drive assembly. The telescopic end of the lifting drive cylinder and the top of the guide shaft 2 are commonly connected to a support plate, and the workpiece jig is located on the upper part of the support plate.

[0016] Furthermore, the hard support assembly includes a base installed on the top of the equipment base and brackets located on both sides of the base. The upper part of the base is slidably connected to a hard support block, and a support drive cylinder is installed on the top of the bracket. The telescopic end of the support drive cylinder is connected to the hard support block.

[0017] Furthermore, a slide groove is reserved at the top of the base, and a protrusion is connected to the bottom end of the hard support block, and the protrusion slides inside the slide groove.

[0018] The utility model provides a centering and pressing mechanism. Compared with the prior art, it has the following beneficial effects:

[0019] The centering and pressing mechanism is provided with a downward positioning module and a lifting positioning module, which will clamp and position the claw stage by moving closer to each other before pressing. In the process of claw stage positioning, the downward positioning module can also position the shaft rod. After double positioning, the press-fitting is carried out, and the error of the claw stage and shaft rod combination obtained will be within the allowable range, thereby improving the yield rate of press-fitting and improving the quality of the generator. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a structural diagram of the middle and lower pressure positioning module of the utility model;

[0022] Figure 3 This is a schematic diagram of the disassembly of the jacking and positioning module in the present utility model;

[0023] Figure 4 This is a schematic diagram of the assembly of the jacking and positioning module in the present invention;

[0024] Figure 5 This is a structural diagram of the jacking drive assembly in the present utility model;

[0025] Figure 6 This is a schematic diagram of the split buffer structure of the push rod in the utility model;

[0026] Figure 7 This is a structural diagram of the fixture holding up components in the present invention;

[0027] Figure 8 This is a schematic diagram of the disassembly of the hard support assembly in the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the claw stage and the shaft rod located on the workpiece fixture in the present invention;

[0029] Figure 10 It is a half-section view of the present invention.

[0030] In the figure: 1. Equipment base; 2. Downward pressure positioning module; 21. Column; 22. Top plate; 23. Lifting plate; 24. Downward pressure drive cylinder; 25. Through hole; 26. Clamping cylinder; 3. Lifting positioning module; 31. Lifting drive assembly; 311. Lifting drive cylinder; 312. Guide shaft rod 1; 313. Lifting plate; 314. Limit seat; 315. Push rod; 316. Retaining ring; 317. Spring; 32. Fixture lifting assembly; 321. Lifting drive cylinder; 322. Guide shaft rod 2; 323. Support plate; 33. Hard support assembly; 331. Base; 332. Bracket; 333. Hard support block; 334. Support drive cylinder; 335. Slide; 336. Bump; 4. Workpiece fixture; 5. Servo electric cylinder; 51. Pressing head; 6. Claw stage; 7. Shaft rod. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1 、 9 10. The present invention provides a technical solution: a centering and pressing mechanism, which consists of an equipment base 1, a downward pressing positioning module 2, a lifting positioning module 3, a workpiece fixture 4, and a servo electric cylinder 5, wherein the downward pressing positioning module 2 is mounted on the upper part of the equipment base 1, the lifting positioning module 3 is located inside the downward pressing positioning module 2, the workpiece fixture 4 is located above the lifting positioning module 3, the servo electric cylinder 5 is mounted on the upper part of the downward pressing positioning module 2, and a pressing head 51 is installed at the telescopic end of the servo electric cylinder 5;

[0033] During the operation of the mechanism, the claw stage 6 and the shaft rod 7 are pre-assembled by the staff, placed on the workpiece fixture 4, and then fixed as a whole on the jacking positioning module 3. During the pressing process, first, the pressing positioning module 2 and the lifting positioning module 3 move toward each other at the same time, so that the claw stage 6 is pressed between the pressing positioning module 2 and the lifting positioning module 3 to position the claw stage 6. At the same time, the pressing positioning module 2 can also clamp and position the shaft rod 7. After the above-mentioned double positioning, the servo electric cylinder 5 will push the pressing head 51 downward to press the shaft rod 7 into the inside of the claw stage 6, and the error will be greatly reduced, thereby improving the yield rate of pressing.

[0034] See also Figure 2 、 10 The downward pressure positioning module 2 includes a plurality of columns 21 installed on the upper part of the equipment base 1, the top ends of the plurality of columns 21 are commonly connected to a top plate 22, and the outsides of the plurality of columns 21 are commonly slidably connected to a lifting plate 23, and a downward pressure driving cylinder 24 is installed at the bottom end of the top plate 22, and the telescopic end of the downward pressure driving cylinder 24 is connected to the lifting plate 23, and a through hole 25 is reserved in the middle of the lifting plate 23, and a clamping cylinder 26 is installed in the middle of the lifting plate 23 adjacent to the through hole 25.

[0035] When the downward positioning module 2 is working, the downward driving cylinder 24 extends, pushing the lifting plate 23 down until it contacts the claw stage 6, thereby forming downward pressure on the claw stage 6 for positioning. At the same time, the shaft rod 7 passes through the lifting plate 23 through the through hole 25, and the clamping cylinder 26 clamps the part through which the shaft rod 7 passes to position the shaft rod 7.

[0036] See also Figure 3 、 4The jacking and positioning module 3 includes a jacking drive assembly 31 and a hard support assembly 33 installed at the top of the equipment base 1. The hard support assembly 33 is located below the jacking drive assembly 31 and can support the jacking drive assembly 31. A fixture holding assembly 32 is installed on the upper part of the jacking drive assembly 31;

[0037] See also Figure 5 、 6 10. The lifting drive assembly 31 includes a lifting drive cylinder 311 and a plurality of guide shafts 312 symmetrically mounted on the top of the equipment base 1. The telescopic end of the lifting drive cylinder 311 and the top of the guide shaft 312 are commonly connected to a lifting plate 313. A limit seat 314 is mounted on the top of the lifting plate 313. The limit seat 314 is movably connected to a push rod 315 inside. A retaining ring 316 and a spring 317 are respectively sleeved on the outside of the push rod 315. The spring 317 abuts between the limit seat 314 and the retaining ring 316.

[0038] See also Figure 7 、 10 The fixture lifting assembly 32 includes a lifting drive cylinder 321 and a plurality of guide shafts 322 symmetrically mounted on the top of the lifting drive assembly 31. The telescopic end of the lifting drive cylinder 321 and the top of the guide shaft 322 are commonly connected to a support plate 323. The workpiece fixture 4 is located on the upper part of the support plate 323.

[0039] See also Figure 8 、 10 The hard support assembly 33 includes a base 331 installed at the top of the equipment base 1 and a bracket 332 located on both sides of the base 331. The upper part of the base 331 is slidably connected to the hard support block 333. The top of the bracket 332 is installed with a support driving cylinder 334. The telescopic end of the support driving cylinder 334 is connected to the hard support block 333. A slide groove 335 is reserved at the top of the base 331. The bottom end of the hard support block 333 is connected to the protrusion 336, and the protrusion 336 slides inside the slide groove 335.

[0040] When the lifting and positioning module 3 is working, first, the lifting drive cylinder 311 pushes the lifting plate 313, so that the lifting plate 313 and the fixture holding assembly 32 move up synchronously, and then the lifting drive cylinder 321 pushes the supporting plate 323 and the workpiece fixture 4 to move up, and pushes the claw stage 6 and the shaft rod 7 to the lifting plate 23 that is moving down, until the supporting plate 323 and the lifting plate 23 jointly position the fixed claw stage 6, and then the two supporting drive cylinders 334 extend and push the two hard support blocks 333. Under the action of the slide groove 335 and the protrusion 336, the two hard support blocks 333 move together and are located below the lifting plate 313. The two hard support blocks 333 are against the lifting plate 3 13 is supported to prepare for the subsequent servo electric cylinder 5 to press the shaft 7 into the interior of the claw stage 6. During the rising process of the lifting plate 313, the push rod 315 will also rise synchronously. The push rod 315 will push the shaft 7 upward, so that the shaft 7 and the claw stage 6 move up synchronously until the shaft 7 is clamped and positioned by the clamping cylinder 26. Then the servo electric cylinder 5 drives the pressing head 51 to move downward. When the pressing head 51 contacts the shaft 7 and generates a slight downward pressure, the clamping cylinder 26 releases the shaft 7. At this time, the pressing head 51 continues to press down. During the downward pressing process, the spring 317 contracts and the push rod 315 moves downward synchronously until the shaft 7 is pressed into the interior of the claw stage 6.

Claims

1. A centering and pressing mechanism, comprising a device base (1), characterized in that: Also includes: A downward pressing positioning module (2), the downward pressing positioning module (2) being installed on the upper portion of the equipment base (1) and capable of pressing down the workpiece; A lifting and positioning module (3), the lifting and positioning module (3) is located inside the pressing and positioning module (2) and is capable of lifting a workpiece; A workpiece jig (4), the workpiece jig (4) being located above the lifting and positioning module (3) and capable of carrying a workpiece to be pressed; A servo electric cylinder (5), wherein a press head (51) is installed at the telescopic end of the servo electric cylinder (5) and is capable of applying pressure to the workpiece; The downward pressure positioning module (2) includes a plurality of columns (21) installed on the upper part of the equipment base (1), the top ends of the plurality of columns (21) are commonly connected to a top plate (22), and the outsides of the plurality of columns (21) are commonly slidably connected to a lifting plate (23), a downward pressure driving cylinder (24) is installed at the bottom end of the top plate (22), the telescopic end of the downward pressure driving cylinder (24) is connected to the lifting plate (23), a through hole (25) is reserved in the middle of the lifting plate (23), and a clamping cylinder (26) is installed in the middle of the lifting plate (23) adjacent to the through hole (25); The jacking and positioning module (3) comprises a jacking drive assembly (31) and a hard support assembly (33) installed at the top of the equipment base (1); the hard support assembly (33) is located below the jacking drive assembly (31) and can support the jacking drive assembly (31); and a fixture holding assembly (32) is installed on the upper part of the jacking drive assembly (31).

2. A centering and pressing mechanism according to claim 1, characterized in that: The jacking drive assembly (31) includes a jacking drive cylinder (311) and a plurality of guide shafts (312) symmetrically mounted on the top of the equipment base (1); the telescopic end of the jacking drive cylinder (311) and the top of the guide shaft (312) are commonly connected to a jacking plate (313).

3. A centering and pressing mechanism according to claim 2, characterized in that: A limit seat (314) is installed at the top end of the lifting plate (313), and a push rod (315) is movably connected inside the limit seat (314). A retaining ring (316) and a spring (317) are respectively sleeved on the outside of the push rod (315), and the spring (317) is abutted between the limit seat (314) and the retaining ring (316).

4. A centering and pressing mechanism according to claim 1, characterized in that: The fixture lifting assembly (32) includes a lifting drive cylinder (321) and a plurality of guide shaft rods (322) symmetrically installed on the top of the jacking drive assembly (31); the telescopic end of the lifting drive cylinder (321) and the top of the guide shaft rods (322) are commonly connected to a support plate (323); and the workpiece fixture (4) is located on the upper part of the support plate (323).

5. The centering and pressing mechanism according to claim 1, characterized in that: The hard support assembly (33) comprises a base (331) mounted on the top of the equipment base (1) and brackets (332) located on both sides of the base (331); the upper portion of the base (331) is slidably connected to a hard support block (333); a support driving cylinder (334) is mounted on the top of the bracket (332); and the telescopic end of the support driving cylinder (334) is connected to the hard support block (333).

6. A centering and pressing mechanism according to claim 5, characterized in that: A sliding groove (335) is reserved at the top of the base (331), and a protrusion (336) is connected to the bottom end of the hard support block (333), and the protrusion (336) slides inside the sliding groove (335).

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