A positioning device for gearbox housing polishing

Abstract

The utility model provides a kind of positioning device for gearbox shell polishing, belong to positioning device technical field, including support plate, the top of support plate is fixed with fixed positioning column and is symmetrically provided with two guide through slots in the top of support plate, the inside of two the guide through slots is respectively penetrated with movable positioning column one and movable positioning column two, the bottom of fixed positioning column, movable positioning column one and movable positioning column two is evenly provided with oil cylinder, the inner side position of movable positioning column one and movable positioning column two outer side wall close to guide through slot is evenly provided with guide block;The utility model can make fixed positioning column, movable positioning column one and movable positioning column two fully adhere in the hole inner wall of gearbox shell for installation by the guiding cooperation between shaft center positioning block and contract block, ensure that fixed positioning column, movable positioning column one and movable positioning column two are on the same axis with hole, to avoid that gearbox shell is slightly offset after positioning.

Description

Technical Field

[0001] This utility model belongs to the technical field of positioning devices, specifically relating to a positioning device for polishing gearbox housings. Background Technology

[0002] The gearbox housing is a core component of the automotive transmission system. As the skeleton of the gearbox, it supports key parts such as gears and bearings, and withstands the vibrations and impacts transmitted from the engine. Its machining quality directly affects the assembly accuracy, transmission efficiency, and service life of the gearbox.

[0003] During the processing of the gearbox housing, its end face needs to be polished. In order to ensure the polishing accuracy, the gearbox housing needs to be positioned. Since the size of the gearbox housing varies according to different usage scenarios, the positioning device needs to be changed according to different gearbox housings. If the positioning device is not changed, the gearbox housing will be offset during processing, resulting in processing failure. Moreover, when positioning the gearbox housing, the outer wall of the gearbox housing is easily deformed by the pressure of the positioning device.

[0004] Therefore, a positioning device for polishing gearbox housings is proposed. Summary of the Invention

[0005] This utility model provides a positioning device for polishing gearbox housing, the purpose of which is to solve the problems mentioned above.

[0006] This utility model provides a positioning device for polishing a gearbox housing, including a support plate. A fixed positioning post is fixedly fixed through the top of the support plate, and two guide slots are symmetrically opened on the top of the support plate. A movable positioning post one and a movable positioning post two are respectively installed through the interior of the two guide slots. A hydraulic cylinder is provided at the bottom end of each of the fixed positioning post, the movable positioning post one, and the movable positioning post two. A guide block is provided on the outer side wall of each of the movable positioning post one and the movable positioning post two near the inner side of the guide slot. A shaft positioning block is installed through the outer side wall of each of the fixed positioning post one and the movable positioning post two. A guide surface is provided on the top of the shaft positioning block. A piston rod moves piston-like inside each of the fixed positioning post one and the movable positioning post two. A connecting post is provided at the center of the top of the piston rod. A wedge is provided on the top of the connecting post. A spring is provided between the bottom of the piston rod and the bottom of the hydraulic cylinder. A shut-off valve is provided on the top of the hydraulic cylinder, and an oil pipe is provided on the top of the shut-off valve.

[0007] Furthermore, conical teeth blocks are provided on the outer peripheral surfaces of the first and second movable positioning posts, a bracket is provided on the outer peripheral surface of the fixed positioning post, a bracket is provided at the bottom of the support plate, a conical tooth plate is connected between the first and second brackets by a positioning pin, a rotating sleeve is fitted on the outer peripheral surfaces of the first and second movable positioning posts, a connecting plate is provided on one side of the rotating sleeve, a plurality of docking holes are equally spaced on one side of the outer wall of the connecting plate, and a support frame is provided at the bottom of the support plate.

[0008] Furthermore, the guide block is located inside the guide groove, and the guide block and the guide groove are slidably connected;

[0009] By adopting the above technical solution, the guide channel can guide and limit the guide block, ensuring the stability of the guide block's movement, thereby allowing for positional adjustment of movable positioning post one and movable positioning post two.

[0010] Furthermore, the opposing sidewalls of the axial positioning block and the wedge block are provided with parallel inclined surfaces;

[0011] By adopting the above technical solution, the parallel inclined surfaces can generate an inclined guiding force when the axial positioning block and the wedge block are pressed together, thereby converting a part of the force in the horizontal direction into a force in the vertical direction. When the axial positioning block is pressed and moves into the interior of the fixed positioning post, the first movable positioning post and the second movable positioning post, the wedge block can move vertically downward.

[0012] Furthermore, both the conical tooth block and the conical tooth plate are provided with conical teeth with a cross-section of a right triangle, and the right-angled sides of the conical tooth block and the conical tooth plate abut and engage with each other;

[0013] By adopting the above technical solution, a unidirectional meshing structure can be formed, thereby enabling relative unidirectional movement between the bevel tooth block and the bevel tooth plate.

[0014] Furthermore, the first and second movable positioning posts are slidably connected to the rotating sleeve via an annular slider and an annular groove.

[0015] By adopting the above technical solution, the annular sliding structure allows the rotating sleeve to rotate along the outer circumferential surfaces of the first and second movable positioning posts, thereby adjusting the position of the protrusion on the rotating sleeve and facilitating the fixing of the connecting plate between the two rotating sleeves.

[0016] Furthermore, the rotating sleeve and the connecting plate are fixed together by screws, the screws passing through the mating hole and screwed together with the rotating sleeve;

[0017] By adopting the above technical solution, the connecting plate can be fixed with screws, thus achieving positional fixation of the connecting plate.

[0018] Furthermore, the fixed positioning post, the first movable positioning post, and the second movable positioning post are all slidably connected to the axial positioning block;

[0019] By adopting the above technical solution, the stability of the horizontal linear motion of the shaft positioning block is ensured, and the positional deviation of the shaft positioning block during the movement is avoided.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. This utility model, through the guiding cooperation between the shaft positioning block and the wedge block, allows the fixed positioning post, movable positioning post one, and movable positioning post two to fully fit against the inner wall of the hole used for installation on the gearbox housing, ensuring that the fixed positioning post, movable positioning post one, and movable positioning post two are on the same axis as the hole, thereby avoiding slight displacement of the gearbox housing after positioning. Moreover, using the hole on the gearbox housing as the positioning force point can reduce the pressure on the gearbox housing, effectively preventing the gearbox housing from being deformed under pressure. Furthermore, using hydraulic oil as the power source to maintain the position of the shaft positioning block can ensure the firmness of the shaft positioning block in position, thereby ensuring the accuracy of positioning.

[0022] 2. This utility model uses movable positioning post one and movable positioning post two to adjust their positions relative to the fixed positioning post, thereby positioning gearbox housings of different sizes. It has high adaptability. Furthermore, the triangular support structure formed by two bevel plates and a connecting plate ensures the stability of the movable positioning post one and movable positioning post two after adjustment, thus ensuring the firmness and stability of the gearbox housing after positioning.

[0023] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0024] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0025] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the support plate structure according to an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the movable positioning column according to an embodiment of the present utility model;

[0028] Figure 4 This is a three-dimensional cross-sectional view of the movable positioning column according to an embodiment of the present utility model;

[0029] Figure 5 This is a schematic diagram of the conical tooth plate structure according to an embodiment of the present utility model;

[0030] Reference numerals in the attached drawings: 1. Support plate; 2. Fixed positioning post; 3. Guide groove; 4. Movable positioning post one; 5. Movable positioning post two; 6. Hydraulic cylinder; 7. Guide block; 8. Shaft positioning block; 9. Guide surface; 10. Piston column; 11. Connecting column; 12. Wedge block; 13. Spring; 14. Shut-off valve; 15. Oil pipe; 16. Conical tooth block; 17. Bracket one; 18. Bracket two; 19. Conical tooth plate; 20. Positioning pin; 21. Rotating sleeve; 22. Connecting plate; 23. Docking hole; 24. Support frame. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] Example 1

[0033] Reference Figure 1-4This utility model provides a positioning device for polishing a gearbox housing, including a support plate 1. A fixed positioning post 2 is fixedly installed through the top of the support plate 1, and two guide grooves 3 are symmetrically opened on the top of the support plate 1. A movable positioning post 4 and a movable positioning post 5 are respectively installed through the interior of the two guide grooves 3. A hydraulic cylinder 6 is provided at the bottom end of each of the fixed positioning post 2, the movable positioning post 4, and the movable positioning post 5. The outer side walls of the movable positioning post 4 and the movable positioning post 5 are located near the inner side of the guide grooves 3. Guide blocks 7 are provided at each position. The guide blocks 7 are located inside the guide groove 3 and are slidably connected to the guide groove 3. The guide groove 3 can guide and limit the movement of the guide blocks 7, ensuring the stability of their movement. This allows for the adjustment of the positions of the movable positioning post 1 4 and the movable positioning post 2 5. A central positioning block 8 is provided through the outer wall of each of the fixed positioning post 2, the movable positioning post 1 4, and the movable positioning post 2 5. The fixed positioning post 2, the movable positioning post 1 4, and the movable positioning post 2 5 are all connected to the central positioning block. The 8-phase sliding connection ensures the stability of the horizontal linear movement of the shaft positioning block 8 and prevents the shaft positioning block 8 from shifting position during movement. The top of the shaft positioning block 8 is provided with a guide surface 9. The piston column 10 is used for piston-like movement inside the fixed positioning column 2, the movable positioning column 1 4, and the movable positioning column 2 5. A connecting column 11 is provided at the center of the top of the piston column 10. A wedge block 12 is provided at the top of the connecting column 11. The side walls of the shaft positioning block 8 and the wedge block 12 facing each other are provided with parallel inclined surfaces. Through the parallel inclined surfaces, the shaft positioning block 8 and the wedge block 12 can generate an inclined guiding force when they are pressed together, thereby converting part of the force in the horizontal direction into a force in the vertical direction. When the shaft positioning block 8 is pressed and moves into the interior of the fixed positioning column 2, the movable positioning column 1 4, and the movable positioning column 2 5, the wedge block 12 can move vertically downward. A spring 13 is provided between the bottom of the piston column 10 and the bottom of the interior of the oil cylinder 6. A shut-off valve 14 is provided at the top of the oil cylinder 6. An oil pipe 15 is provided at the top of the shut-off valve 14.

[0034] Specifically, when positioning the gearbox housing, the positions of movable positioning pin 1 4 and movable positioning pin 2 5 are adjusted according to the positions of the mounting holes on the bottom of the gearbox housing, and then the movable positioning pin 1 4 and movable positioning pin 2 5 are fixed in their positions so that the fixed positioning pin 2, movable positioning pin 1 4, and movable positioning pin 2 5 can all pass through the aforementioned holes. Then, the gearbox housing is moved vertically downwards. As the gearbox housing moves, the holes on the gearbox housing fit onto the fixed positioning pin 2, movable positioning pin 1 4, and movable positioning pin 2 5. As the gearbox housing moves downwards, the outer peripheral walls of the holes on the gearbox housing contact and press against the shaft. The axial positioning block 8, guided by the horizontal sliding of the axial positioning block 8, presses the wedge block 12 after linear motion. Under the guidance of the inclined surface between the axial positioning block 8 and the wedge block 12, the wedge block 12 is pressed and pulls the connecting column 11 and the piston column 10 to move vertically downward. The spring 13 is compressed, the hydraulic oil pressure in the oil cylinder 6 increases, and the hydraulic oil is squeezed out through the shut-off valve 14. After the bottom of the gearbox housing is attached to the top of the support plate 1, the shut-off valve 14 is closed. The fixed positioning column 2, the movable positioning column 1 4 and the movable positioning column 2 5 position and limit the gearbox housing, and then polish it using a polishing tool.

[0035] Example 2

[0036] Reference Figure 1-5 Based on the above embodiments, this utility model embodiment also proposes a positioning device for polishing gearbox housing, including a support plate 1, a fixed positioning post 2 through and fixedly fixed on the top of the support plate 1, and two guide grooves 3 symmetrically opened on the top of the support plate 1, with movable positioning post 1 4 and movable positioning post 2 5 respectively through and fixedly fixed on the inside of the two guide grooves 3.

[0037] Conical tooth blocks 16 are provided on the outer peripheral surfaces of movable positioning post 1 4 and movable positioning post 2 5. A bracket 17 is provided on the outer peripheral surface of fixed positioning post 2. A bracket 2 18 is provided at the bottom of support plate 1. A conical tooth plate 19 is pinned between bracket 1 17 and bracket 2 18 via a positioning pin 20. The conical tooth plate 19 is made of elastic steel. Both the conical tooth blocks 16 and the conical tooth plate 19 are provided with conical teeth with a right-angled triangular cross-section. The right-angled sides of the conical tooth blocks 16 and the conical tooth plate 19 abut and engage, forming a unidirectional meshing structure. This allows for relative unidirectional movement between the conical tooth blocks 16 and the conical tooth plate 19. Rotating sleeves 21 are fitted onto the outer peripheral surfaces of movable positioning post 1 4 and movable positioning post 2 5. The rotating sleeves 21 are slidably connected by an annular slider and an annular groove. Through the annular sliding structure, the rotating sleeves 21 can rotate along the outer circumference of the movable positioning post 1 4 and the movable positioning post 2 5, thereby adjusting the position of the protrusion on the rotating sleeves 21, which facilitates fixing the connecting plate 22 between the two rotating sleeves 21. The connecting plate 22 is provided on one side of the rotating sleeves 21. The rotating sleeves 21 and the connecting plate 22 are fixed together by screws. The screws pass through the docking holes 23 and are screwed together with the rotating sleeves 21. The connecting plate 22 can be fixed by the screws, thus fixing the position of the connecting plate 22. Several docking holes 23 are evenly spaced on one side of the outer wall of the connecting plate 22. The bottom of the support plate 1 is provided with a support frame 24.

[0038] Specifically, when adjusting the positions of movable positioning post 14 and movable positioning post 25, as movable positioning post 14 and movable positioning post 25 move linearly along the guide groove 3, the conical tooth blocks 16 on movable positioning post 14 and movable positioning post 25 move synchronously. As the conical tooth blocks 16 move, they press against the conical tooth plate 19 during the movement, causing the conical tooth plate 19 to deform to allow the conical tooth blocks 16 to move along it. Because the cross-sections of the conical teeth on the conical tooth blocks 16 and the conical tooth plate 19 are right-angled triangles, the conical tooth blocks 16 can only move unidirectionally along the conical tooth plate 19. After the movable positioning pin 1 4 and the movable positioning pin 2 5 are moved to the required positions, the rotating sleeve 21 on the outer circumferential surface of the movable positioning pin 1 4 and the movable positioning pin 2 5 is rotated so that the protrusions on the rotating sleeve 21 are on the same surface. Then, the connecting plate 22 is fixed to the protrusions on the two rotating sleeves 21, and the movable positioning pin 1 4 and the movable positioning pin 2 5 form a connecting support. At this time, the two bevel plates 19 and the connecting plate 22 form a triangular support structure, which can ensure the stability of the position of the movable positioning pin 1 4 and the movable positioning pin 2 5 after adjustment, thereby ensuring the firmness and stability of the gearbox housing after positioning.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning device for polishing a gearbox housing, characterized in that: The support plate (1) has a fixed positioning post (2) through its top and two guide slots (3) symmetrically opened on its top. Movable positioning post one (4) and movable positioning post two (5) are respectively installed inside the two guide slots (3). A hydraulic cylinder (6) is installed at the bottom of each of the fixed positioning post (2), movable positioning post one (4), and movable positioning post two (5). Guide blocks (7) are installed on the outer walls of each of the movable positioning post one (4) and movable positioning post two (5) near the inner side of the guide slots (3). The fixed positioning post (2), movable positioning post one (4), and movable positioning post two (5) are also equipped with hydraulic cylinders (6). A central positioning block (8) is provided through the outer wall of the second (5). A guide surface (9) is provided on the top of the central positioning block (8). The piston column (10) moves inside the fixed positioning column (2), the movable positioning column one (4) and the movable positioning column two (5). A connecting column (11) is provided at the center of the top of the piston column (10). A wedge (12) is provided on the top of the connecting column (11). A spring (13) is provided between the bottom of the piston column (10) and the bottom of the inside of the oil cylinder (6). A shut-off valve (14) is provided on the top of the oil cylinder (6). An oil pipe (15) is provided on the top of the shut-off valve (14).

2. The positioning device for polishing a gearbox housing according to claim 1, characterized in that: The outer peripheral surfaces of the movable positioning post 1 (4) and movable positioning post 2 (5) are provided with conical teeth blocks (16), the outer peripheral surface of the fixed positioning post (2) is provided with bracket 1 (17), the bottom of the support plate (1) is provided with bracket 2 (18), the bracket 1 (17) and bracket 2 (18) are connected by a positioning pin (20) with a conical tooth plate (19), the outer peripheral surfaces of the movable positioning post 1 (4) and movable positioning post 2 (5) are both provided with rotating sleeves (21), a connecting plate (22) is provided on one side of the rotating sleeve (21), a plurality of docking holes (23) are equally spaced on one side of the outer wall of the connecting plate (22), and a support frame (24) is provided at the bottom of the support plate (1).

3. The positioning device for polishing a gearbox housing according to claim 1, characterized in that: The guide block (7) is located inside the guide groove (3), and the guide block (7) and the guide groove (3) are slidably connected.

4. The positioning device for polishing a gearbox housing according to claim 1, characterized in that: The axial positioning block (8) and the wedge block (12) have parallel inclined surfaces on their opposite side walls.

5. A positioning device for polishing a gearbox housing according to claim 2, characterized in that: Both the conical tooth block (16) and the conical tooth plate (19) are provided with conical teeth with a cross-section of a right triangle, and the right-angled sides of the conical tooth block (16) and the conical tooth plate (19) abut and engage with each other.

6. A positioning device for polishing a gearbox housing according to claim 2, characterized in that: The movable positioning post one (4) and movable positioning post two (5) are slidably connected to the rotating sleeve (21) through an annular slider and an annular groove.

7. A positioning device for polishing a gearbox housing according to claim 2, characterized in that: The rotating sleeve (21) and the connecting plate (22) are fixed together by screws, which pass through the docking hole (23) and are screwed together with the rotating sleeve (21).

8. A positioning device for polishing a gearbox housing according to claim 1, characterized in that: The fixed positioning post (2), the first movable positioning post (4), and the second movable positioning post (5) are all slidably connected to the axial positioning block (8).

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