Gearbox shell machining self-centering device

Abstract

The utility model relates to the technical field of gearbox shell machining, and discloses a gearbox shell machining self-centering device which comprises a base, the top of the base is fixedly connected with a fixing cylinder, a lifting motor is fixedly installed at the bottom in the fixing cylinder, and the lifting motor is fixedly connected with a threaded rod A through an output shaft of the lifting motor. According to the gearbox shell machining device, the supporting mechanism is arranged, so that when a gearbox shell needs to be machined, the axis of the gearbox shell penetrates through the centering column, the supporting ring can support the bottom of the gearbox shell, and the gearbox shell can be machined conveniently; and then a supporting motor is started to drive a rotating rod to rotate, at the moment, a bevel gear A, a bevel gear B, a threaded rod B and other assemblies are matched to drive a supporting block to move towards the outer side of a centering column to support the inner wall of the gearbox shell, the overall centering effect is good, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of gearbox housing processing technology, and in particular to a self-centering device for gearbox housing processing. Background Technology

[0002] The gearbox housing is a housing structure used to install the transmission mechanism and its accessories. It is one of the important components of a car and has a significant impact on the overall performance of the vehicle. During the production and processing of the gearbox housing, it needs to undergo multiple processes such as cutting and grinding. In order to ensure the processing accuracy, the gearbox housing to be processed needs to be positioned.

[0003] Patent document CN118321938A discloses a self-centering device for machining a gearbox housing, comprising: a fixture base plate, a positioning component disposed on the fixture base plate, and a centering body connected to the positioning component; the positioning component includes a positioning base, an oil-free bushing disposed inside the positioning base, a limiting cover disposed on the positioning base, and a spring assembly disposed inside the positioning base; the centering body includes a positioning shaft disposed inside the positioning base, a height limiting ring disposed on the positioning shaft, and a circumferential self-centering component.

[0004] In the aforementioned patent document, the workpiece to be processed (gearbox housing) is fitted onto the centering body. The coarse positioning mechanism initially defines the relative position between the centering body and the workpiece to be processed. The workpiece is supported by a height limiting ring. During the centering operation, when the adjusting nut is tightened, the adjusting nut causes the compression washer to press the centering shaft into the circumferential centering seat. This method is relatively cumbersome to use, easily affects the efficiency of processing the gearbox housing, and has a poor effect on supporting the inner wall of the gearbox housing. Therefore, it needs to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the centering operation in the prior art is relatively troublesome, which can easily affect the efficiency of processing the gearbox housing and has a poor effect on supporting the inner wall of the gearbox housing. Therefore, we propose a self-centering device for processing gearbox housing.

[0006] To achieve the above objectives, this application adopts the following technical solution: a self-centering device for processing a gearbox housing, comprising: a base, a fixed cylinder fixedly connected to the top of the base, a lifting motor fixedly installed at the bottom of the fixed cylinder, a threaded rod A fixedly connected to the output shaft of the lifting motor, a centering column slidably connected inside the fixed cylinder, and a support mechanism provided on the surface of the centering column; the support mechanism includes a rotating rod, a support motor, a support ring, a fixed disk, and a support plate, the support ring and the fixed disk are both fixedly connected to the surface of the centering column, the rotating rod is rotatably connected inside the centering column, a bevel gear A is fixedly connected to the surface of the rotating rod, a telescopic cylinder is fixedly connected inside the fixed disk, a telescopic rod is slidably connected inside the telescopic cylinder, a support block is fixedly connected to the end of the telescopic rod away from the telescopic cylinder, a support plate is fixedly connected inside the centering column, a threaded rod B is rotatably connected through the side of the support plate, a bevel gear B is fixedly connected to the side of the threaded rod B, and a buffer mechanism is provided on the top of the support ring.

[0007] Preferably, the centering column has internal threads, and the centering column is threaded to the threaded rod A through the internal threads. When the threaded rod A rotates, it will drive the centering column to move upward through the engagement of the threads.

[0008] Preferably, bevel gear A and bevel gear B mesh perpendicularly, and the telescopic rod is threadedly connected to the threaded rod B through an internal thread. When bevel gear A rotates, it will drive bevel gear B to rotate. When threaded rod B rotates, it will drive the telescopic rod to move outward through the engagement of the threads.

[0009] Preferably, the support block is hemispherical in shape, and the inner wall of the gearbox housing is supported by the hemispherical rubber support block.

[0010] Preferably, the buffer mechanism includes an opening groove, which is opened at the top of the support ring. A buffer spring is provided inside the opening groove, and a buffer block is elastically connected inside the opening groove through the buffer spring. A damper is fixedly connected to the bottom of the opening groove.

[0011] Preferably, the buffer block protrudes from the top of the support ring in the initial state, and the end of the damper away from the bottom of the opening groove is fixedly connected to the bottom of the buffer block. When the bottom of the gearbox housing contacts the support ring, the buffer block will be impacted and move downward, and the damper will play a damping role.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention incorporates a support mechanism, which allows the gearbox housing to be processed when the shaft passes through the centering column. The support ring then supports the bottom of the gearbox housing. Subsequently, the support motor is activated to rotate the rotating rod. At this time, the support block moves outward from the centering column through the cooperation of components such as bevel gear A, bevel gear B, and threaded rod B, thus supporting the inner wall of the gearbox housing. The overall centering effect is good, and the operation is simple.

[0014] In this invention, a buffer mechanism is provided so that when the gearbox housing shaft passes through the centering column and the bottom of the gearbox housing contacts the support ring, the gearbox housing is also buffered by the cooperation of components such as buffer blocks and buffer springs to prevent damage caused by gravity falling. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a three-dimensional sectional view of the overall structure of the support mechanism of this utility model;

[0019] Figure 4 This is a three-dimensional sectional view of the support mechanism of this utility model;

[0020] Figure 5 This is a three-dimensional sectional view of the buffer mechanism structure of this utility model.

[0021] Legend: 1. Base; 2. Fixed cylinder; 3. Lifting motor; 4. Threaded rod A; 5. Centering column; 6. Support mechanism; 61. Rotating rod; 62. Support motor; 63. Bevel gear A; 64. Telescopic cylinder; 65. Telescopic rod; 66. Support block; 67. Support plate; 68. Threaded rod B; 69. Bevel gear B; 610. Support ring; 611. Fixed plate; 7. Buffer mechanism; 71. Opening slot; 72. Buffer spring; 73. Buffer block; 74. Damper. Detailed Implementation

[0022] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0023] Reference Figure 1 - Figure 5 As shown, this utility model provides a technical solution: a self-centering device for processing a gearbox housing, comprising: a base 1, a fixed cylinder 2 fixedly connected to the top of the base 1, a lifting motor 3 fixedly installed at the bottom of the interior of the fixed cylinder 2, a threaded rod A4 fixedly connected to the output shaft of the lifting motor 3, a centering column 5 slidably connected inside the fixed cylinder 2, the centering column 5 having a thread inside, and the centering column 5 being threadedly connected to the threaded rod A4 through the internal thread. When the threaded rod A4 rotates, it will drive the centering column 5 to move upward through the engagement of the threads. A support mechanism 6 is provided on the surface of the centering column 5; the support mechanism 6 includes a rotating rod 61, a support motor 62, a support ring 610, a fixed plate 611, and a support plate 67. The support ring 610 and the fixed plate 611 are both fixedly connected to the surface of the centering column 5, the rotating rod 61 is rotatably connected to the interior of the centering column 5, and a cone is fixedly connected to the surface of the rotating rod 61. A telescopic cylinder 64 is fixedly connected inside the gear A63 and the fixed disk 611. A telescopic rod 65 is slidably connected inside the telescopic cylinder 64. The bevel gear A63 and the bevel gear B69 mesh perpendicularly. The telescopic rod 65 is threadedly connected to the threaded rod B68 through an internal thread. When the bevel gear A63 rotates, it will drive the bevel gear B69 to rotate. When the threaded rod B68 rotates, it will drive the telescopic rod 65 to move outward from the telescopic cylinder 64 through the engagement of the threads. A support block 66 is fixedly connected to the end of the telescopic rod 65 away from the telescopic cylinder 64. The support block 66 is hemispherical in shape. The inner wall of the gearbox housing is supported by the hemispherical rubber support block 66. The support plate 67 is fixedly connected inside the centering column 5. The threaded rod B68 is rotatably connected through the side of the support plate 67. The bevel gear B69 is fixedly connected to the side of the threaded rod B68. A buffer mechanism 7 is provided on the top of the support ring 610.

[0024] The buffer mechanism 7 includes an opening groove 71, which is located at the top of the support ring 610. A buffer spring 72 is installed inside the opening groove 71, and a buffer block 73 is elastically connected inside the opening groove 71 through the buffer spring 72. A damper 74 is fixedly connected to the bottom inside the opening groove 71. In the initial state, the buffer block 73 protrudes from the top of the support ring 610. The end of the damper 74 away from the bottom inside the opening groove 71 is fixedly connected to the bottom of the buffer block 73. When the bottom of the gearbox housing contacts the support ring 610, the buffer block 73 will be impacted and move downwards, and the damper 74 will play a damping role.

[0025] Working principle: The user inserts the gearbox housing shaft through the centering column 5. The bottom of the gearbox housing contacts the support ring 610 for support. Turning on the support motor 62 drives the rotating rod 61 to rotate. The rotation of the rotating rod 61 drives the bevel gear A63 to rotate, which in turn drives the bevel gear B69 to rotate. The rotation of the bevel gear B69 drives the threaded rod B68 to rotate. When the threaded rod B68 rotates, the threaded engagement causes the telescopic rod 65 to move outwards towards the telescopic cylinder 64. This movement of the telescopic rod 65 outwards towards the telescopic cylinder 64 causes the hemispherical rubber support block 66 to contact the inner wall of the gearbox housing. The rubber support block 66 supports the inner wall of the gearbox housing. When the overall height needs to be adjusted, the lifting motor 3 is turned on to drive the threaded rod A4 to rotate. The rotation of the threaded rod A4 will drive the centering column 5 to move upward through the engagement of the threads, thereby adjusting the overall height. When the bottom of the gearbox housing contacts the support ring 610, the buffer block 73 will be impacted and move downward. The downward movement of the buffer block 73 will transfer the impact force to the buffer spring 72. The buffer spring 72 absorbs the impact force and is compressed. At the same time, the damper 74 plays a damping role, thereby achieving the buffering effect and preventing the gearbox housing from being damaged due to gravity falling.

[0026] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A gearbox housing machining self-centering device, characterized in that, Include: The base, the top of the fixed connection has fixed cylinder, the inside bottom of the fixed installation of the fixed cylinder has lifting motor, the output shaft of the lifting motor is fixedly connected with the threaded rod A, the inside of the fixed cylinder is slidingly connected with the centering column, and the surface of the centering column is provided with a supporting mechanism; The supporting mechanism includes a rotating rod, a supporting motor, a supporting ring, a fixed disc and a support plate, the supporting ring and the fixed disc are fixedly connected to the surface of the centering column, the rotating rod is rotatably connected to the inside of the centering column, the surface of the rotating rod is fixedly connected with the bevel gear A, the inside of the fixed disc is fixedly connected with the telescopic cylinder, the inside of the telescopic cylinder is slidingly connected with the telescopic rod, the end of the telescopic rod away from the telescopic cylinder is fixedly connected with the supporting block, the inside of the centering column is fixedly connected with the support plate, the side of the support plate is rotatably connected with the threaded rod B, the side of the threaded rod B is fixedly connected with the bevel gear B, and the top of the supporting ring is provided with a buffer mechanism.

2. A gearbox housing machining self-centering device according to claim 1, characterized in that: The inside of the centering column is provided with a screw thread, and the centering column is screwed with the threaded rod A through the built-in screw thread.

3. A gearbox housing machining self-centring device according to claim 2, characterised in that: The bevel gear A and the bevel gear B are perpendicular to each other, and the telescopic rod is screwed with the threaded rod B through the built-in screw thread.

4. A gearbox housing machining self-centring device according to claim 3, characterised in that: The supporting block is hemispherical in shape.

5. A gearbox housing machining self-centring device according to claim 4, characterised in that: The buffer mechanism includes an open slot, the open slot is provided on the top of the supporting ring, the inside of the open slot is provided with a buffer spring, the inside of the open slot is elastically connected with a buffer block through the buffer spring, and the inside bottom of the open slot is fixedly connected with a damper.

6. A gearbox housing machining self-centring device according to claim 5, characterised in that: The buffer block protrudes from the top of the supporting ring in the initial state, and the end of the damper away from the inside bottom of the open slot is fixedly connected with the bottom of the buffer block.

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