A machining fixture for assembling an inclined hole of a gearbox housing

Abstract

The utility model discloses a kind of machining clamps for gearbox shell assembly inclined hole, belong to gearbox shell processing field.The device includes the base pole of fixed setting in the surface of processing table, the clamping pole of setting sliding in the surface of base pole, the end of clamping pole is set with the clamping block that assembly box shell surface bearing hole inner wall is in close contact, the position of bearing hole is limited by clamping block, and then the position of multiple bearing holes is limited by multiple clamping poles, multiple bearing hole positions are fixed, and then the position of assembly box shell is fixed, contact block is set simultaneously, contact block is close to the side of processing table and assembly box shell surface contact, further limit its position;While the position and angle of clamping pole on the surface of base pole are not limited, can be changed according to the distribution position of assembly box shell surface assembly hole, can be adapted to different sizes and different assembly hole quantity assembly box shell clamping, and then the use range of overall device is further expanded.

Description

Technical Field

[0001] This utility model relates to the field of gearbox housing processing, and in particular to a processing fixture for assembling oblique holes in gearbox housings. Background Technology

[0002] The gearbox housing refers to the housing structure used to install the transmission mechanism and its accessories. The surface of the gearbox housing generally needs to be provided with a system of holes such as bearing holes, oil injection holes, and assembly holes. When making holes, bearing holes are made first, followed by other hole systems. Among them, the assembly holes of the gearbox housing are generally used to install bolts, screws or other fasteners, or to guide oil pipes, wires or other pipelines.

[0003] In gearbox housing assembly holes, some holes have axes that form a certain angle with the gearbox housing surface or related reference planes; these are called assembly angled holes. Machining these angled holes requires a machining fixture to hold the gearbox housing. Existing machining fixtures fall into two categories: one type sets contact limiting structures on the gearbox housing surface, using multiple limiting structures to confine the gearbox housing to a certain area; however, the positions of these limiting structures are generally fixed, limiting the applicable gearbox housing sizes. The other type uses locating pins that pass through bearing holes on the gearbox housing surface, with nuts or other structures on the locating pin surface contacting the gearbox housing to restrict its position; however, the fixed position of the locating pins in this type of device also limits the type of gearbox housing, restricting the position of the bearing holes and thus limiting the size and type of the gearbox housing.

[0004] In summary, existing machining fixtures for assembling oblique holes in gearbox housings, when using housing contact clamping or bearing hole limiting clamping, limit the types or sizes of gearbox housings that can be fixed on the surface of the machining fixture, thus restricting the applicability of the machining fixture. Utility Model Content

[0005] This utility model provides a machining fixture for assembling oblique holes in gearbox housings, which can solve the problem that in the prior art, when machining fixtures for assembling oblique holes in gearbox housings are clamped by contact with the outer shell or by limiting clamping with the bearing hole, the types or sizes of gearbox housings that can be fixed on the surface of the machining fixture are limited, thus restricting the applicability of the machining fixture.

[0006] A machining fixture for assembling oblique holes in a gearbox housing includes a machining table, the surface of which is provided with a clamping mechanism, the clamping mechanism comprising:

[0007] A base rod is fixedly installed on the surface of the processing table, and a plurality of limiting teeth are fixedly provided on the surface of the base rod; the length of the limiting teeth is less than the length of the base rod.

[0008] A number of clamping rods are slidably disposed on the surface of a base rod. Each clamping rod has a sliding tooth fixedly connected to its inner wall. The sliding tooth is adapted to a limiting tooth. A limiting ring is detachably connected to the surface of the base rod. The surface of the limiting ring contacts the side of the clamping rod away from the processing table.

[0009] Several clamping columns are provided, each of which is detachably mounted at the end of a clamping rod. Several clamping blocks are slidably connected inside each clamping column, and the clamping blocks are in contact with the inner wall of the bearing hole on the surface of the assembly box housing.

[0010] A contact block is slidably disposed on the surface of the processing table, and the side of the contact block near the processing table is in contact with the assembly box shell.

[0011] Optionally, the surface of the processing table is fixedly connected with a plurality of meshing teeth, which are arranged in a ring array relative to the base rod. The end of the clamping rod away from the limiting ring is fixedly connected with a plurality of connecting teeth, which are evenly divided into two groups and symmetrically arranged relative to the clamping rod. The connecting teeth are adapted to the meshing teeth.

[0012] Optionally, the limiting ring is fixedly connected to a plurality of clamping teeth on the side near the processing table. The plurality of clamping teeth are arranged in a circular array relative to the base rod, and the clamping teeth are adapted to the connecting teeth.

[0013] Optionally, the end of the clamping rod away from the base rod is threadedly connected to an extension rod; the end of the extension rod contacts the surface of the processing table; and the surface of each clamping column is provided with an inner groove, which is adapted to the extension rod.

[0014] Optionally, the clamping post is fixedly connected to two connecting shafts on the side near the clamping rod, and the surface of the clamping rod is provided with an insertion groove, which is adapted to the connecting shaft.

[0015] Optionally, the clamping rod has two connecting rods slidably connected to its surface, and a connecting spring is fixedly connected between the connecting rod and the clamping rod. The connecting rod is perpendicular to the insertion groove. The connecting shaft has two transition grooves on its surface, and the transition grooves are adapted to the connecting rods.

[0016] Optionally, an operating column is rotatably connected to the surface of the clamping column, and both the clamping column and the operating column are provided with sliding grooves. The projections of the two sliding grooves are superimposed and have an included angle. A sliding shaft is fixedly connected to the surface of the clamping block, and the sliding shaft is adapted to the sliding groove.

[0017] Optionally, an operating rod is slidably connected inside the operating column, and several triangular teeth are fixedly connected to the end of the operating rod and inside the clamping column. The triangular teeth on the surfaces of the operating rod and the clamping column are staggered, and a return spring is fixedly connected between the operating rod and the operating column.

[0018] Optionally, a cylinder is fixedly connected to the surface of the processing table, and an elevation platform is fixedly connected to the end of the piston rod inside the cylinder. The contact block is detachably connected to the elevation platform.

[0019] Optionally, the contact block has two insert rods slidably connected inside, and a fixing spring is fixedly connected between the two insert rods. The surface of the raising platform is provided with an oblique groove and several interval grooves. The interval grooves are adapted to the insert rods, and the oblique grooves are connected to the several interval grooves.

[0020] This utility model provides a machining fixture for assembling oblique holes in a gearbox housing. It includes a base rod fixedly mounted on the surface of a machining table, sliding clamping rods on the surface of the base rod, and clamping blocks at the ends of the clamping rods that fit against the inner wall of bearing holes on the surface of the gearbox housing. The clamping blocks define the positions of the bearing holes, and multiple clamping rods further define the positions of multiple bearing holes. Fixing the positions of the multiple bearing holes fixes the position of the gearbox housing. A contact block is also provided, with its side near the machining table contacting the surface of the gearbox housing to further define its position. Furthermore, the position and angle of the clamping rods on the surface of the base rod are unrestricted and can be changed according to the distribution of the assembly holes on the surface of the gearbox housing. This allows for the clamping of gearbox housings of different sizes and with different numbers of assembly holes, thus further expanding the overall applicability of the device. Attached Figure Description

[0021] Figure 1 A schematic diagram of a machining fixture structure for assembling oblique holes in a gearbox housing, provided by this utility model;

[0022] Figure 2 An exploded three-dimensional view of the base rod and clamping rod provided for this utility model;

[0023] Figure 3 A three-dimensional structural cross-sectional view of the clamping column provided by this utility model;

[0024] Figure 4 An exploded three-dimensional view of the contact block provided by this utility model;

[0025] Figure 5 A diagram showing the usage state of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Processing table;

[0028] 21. Base rod; 22. Limiting tooth; 23. Clamping rod; 24. Sliding tooth; 25. Limiting ring; 26. Clamping post; 27. Clamping block; 28. Contact block;

[0029] 31. Engaging teeth; 32. Connecting teeth; 33. Clamping teeth; 34. Extension rod; 35. Inner groove;

[0030] 41. Connecting shaft; 42. Insertion slot; 43. Connecting rod; 44. Connecting spring;

[0031] 51. Operating column; 52. Sliding groove; 53. Sliding shaft; 54. Operating lever; 55. Triangular tooth; 56. Return spring;

[0032] 61. Raising platform; 62. Insertion rod; 63. Fixing spring; 64. Spacing groove. Detailed Implementation

[0033] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0034] like Figures 1 to 5 As shown in the figure, an embodiment of the present invention provides a machining fixture for assembling oblique holes in a gearbox housing, including a machining table 1 for placing the assembly housing. The surface of the machining table 1 is provided with a clamping mechanism, which includes:

[0035] A base rod 21 is fixedly installed on the surface of the processing table 1. A plurality of limiting teeth 22 are fixedly provided on the surface of the base rod 21. The plurality of limiting teeth 22 are arranged in a partially annular array on the surface of the base rod 21. The length of the limiting teeth 22 is less than the length of the base rod 21.

[0036] A number of clamping rods 23 are slidably disposed on the surface of the base rod 21. Each clamping rod 23 has a sliding tooth 24 fixedly connected to its inner wall. The sliding tooth 24 is adapted to the limiting tooth 22. A limiting ring 25 is detachably connected to the surface of the base rod 21. The surface of the limiting ring 25 contacts the side of the clamping rod 23 away from the processing table 1.

[0037] A plurality of clamping posts 26 are provided, each of which is detachably mounted at the end of the clamping rod 23. A plurality of clamping blocks 27 are slidably connected inside the clamping posts 26, and the clamping blocks 27 are in contact with the inner wall of the bearing hole on the surface of the assembly box housing.

[0038] A contact block 28 is slidably disposed on the surface of the processing table 1, and the side of the contact block 28 near the processing table 1 is in contact with the assembly box shell.

[0039] In summary, the present invention provides a machining fixture for assembling oblique holes in a gearbox housing, comprising a base rod 21 fixedly mounted on the surface of a machining table 1, a sliding clamping rod 23 mounted on the surface of the base rod 21, and a clamping block 27 at the end of the clamping rod 23 that fits against the inner wall of the bearing hole on the surface of the gearbox housing. The clamping block 27 defines the position of the bearing hole, and the multiple clamping rods 23 define the positions of multiple bearing holes. The fixed positions of the multiple bearing holes thus fix the position of the gearbox housing. A contact block 28 is also provided, with the side of the contact block 28 near the machining table 1 contacting the surface of the gearbox housing to further define its position. At the same time, the position and angle of the clamping rod 23 on the surface of the base rod 21 are not limited and can be changed according to the distribution of the assembly holes on the surface of the gearbox housing. It can be adapted to clamp gearbox housings of different sizes and with different numbers of assembly holes, thereby further expanding the application range of the overall device.

[0040] In some specific implementations, a plurality of meshing teeth 31 are fixedly connected to the surface of the processing table 1. The plurality of meshing teeth 31 are arranged in a ring array relative to the base rod 21. A plurality of connecting teeth 32 are fixedly connected to the end of the clamping rod 23 away from the limiting ring 25. The plurality of connecting teeth 32 are evenly divided into two groups and are symmetrically arranged in a staggered manner relative to the clamping rod 23. The connecting teeth 32 are adapted to the meshing teeth 31. After the clamping rod 23 slides, the connecting teeth 32 can be adapted to the meshing teeth 31, limiting the angle between the processing table 1 and the clamping rod 23. At the same time, due to the staggered arrangement of the connecting teeth 32 on both sides of the end, the connecting teeth 32 of adjacent clamping rods 23 can mesh with each other, so that the clamping rods 23 are superimposed.

[0041] In a further embodiment, a plurality of clamping teeth 33 are fixedly connected to the side of the limiting ring 25 near the processing table 1. The plurality of clamping teeth 33 are arranged in a circular array relative to the base rod 21. The clamping teeth 33 are adapted to the connecting teeth 32. After the clamping teeth 33 and the connecting teeth 32 on the surface of the limiting ring 25 are engaged, the limiting ring 25 and the clamping rod 23 are in contact, limiting the position of the clamping rod 23 on the surface of the base rod 21.

[0042] In some specific implementations, the end of the clamping rod 23 away from the base rod 21 is threadedly connected to an extension rod 34; the end of the extension rod 34 contacts the surface of the processing table 1; the distance between one end of the clamping rod 23 and the processing table 1 is fixed by the extension rod 34.

[0043] In a further embodiment, the surface of each clamping post 26 is provided with an inner groove 35, which is adapted to the extension rod 34;

[0044] In some specific implementations, the clamping post 26 is fixedly connected to two connecting shafts 41 near the clamping rod 23. The surface of the clamping rod 23 has an insertion groove 42 that is adapted to the connecting shafts 41. The surface of the clamping rod 23 is slidably connected to two connecting rods 43. A connecting spring 44 is fixedly connected between the connecting rods 43 and the clamping rod 23, and the connecting rods 43 are perpendicular to the insertion grooves 42. The surface of the connecting shaft 41 has two transition grooves that are adapted to the connecting rods 43. By sliding the connecting rods 43 into the transition grooves, the relative positions of the connecting rods 43 and the connecting shafts 41 are fixed, thereby limiting the relative positions of the connecting shafts 41 and the connecting rods 43, and further limiting the positions of the clamping post 26 and the contact rod.

[0045] In some specific implementations, the limiting ring 25 has several through grooves on its surface, the base rod 21 has several limiting grooves on its surface, and the limiting grooves and through grooves are threaded with fixing rods.

[0046] In some specific implementations, a cylinder is fixedly connected to the surface of the processing table 1, and an elevation platform 61 is fixedly connected to the end of the piston rod inside the cylinder. The contact block 28 is detachably connected to the elevation platform 61.

[0047] In a further embodiment, two insertion rods 62 are slidably connected inside the contact block 28, and a fixing spring 63 is fixedly connected between the two insertion rods 62. The surface of the raising platform 61 is provided with an inclined groove and several interval grooves 64. The interval grooves 64 are adapted to the insertion rods 62, and the inclined grooves are connected to the several interval grooves 64. The cross-section of the inclined groove is a right trapezoidal shape.

[0048] In some specific implementations, the surface of the clamping column 26 is rotatably connected to the operating column 51, and both the surface of the clamping column 26 and the operating column 51 are provided with sliding grooves 52. The projections of the two sliding grooves 52 are superimposed and have an included angle. The surface of the clamping block 27 is fixedly connected to the sliding shaft 53, and the sliding shaft 53 is adapted to the sliding groove 52.

[0049] In a further embodiment, an operating rod 54 is slidably connected inside the operating column 51. Several triangular teeth 55 are fixedly connected to the end of the operating rod 54 and inside the clamping column 26. The triangular teeth 55 on the surface of the operating rod 54 and the clamping column 26 are misaligned. A return spring 56 is fixedly connected between the operating rod 54 and the operating column 51.

[0050] The working principle of this utility model:

[0051] First, select the number of clamping rods 23 according to the number and position of the bearing holes on the surface of the gearbox housing, and align the clamping rods 23 to a suitable angle. Stack the clamping rods 23, and engage the connecting teeth 32 on the surfaces of adjacent clamping rods 23. Then, slide the assembled clamping rods 23 into the base rod 21, so that the connecting teeth 32 and the engaging teeth 31 contact each other. Place the limiting ring 25, and place the fixing rod between the limiting groove and the through groove to limit the position of the limiting ring 25. Then, place the extension rod 34 at the end of the clamping rod 23, so that the end of the extension rod 34 contacts the surface of the machining table 1. Then, place the individual bearing holes on the surface of the gearbox housing around the base rod 21, and then insert the clamping post 26 into the remaining bearing holes and engage with the clamping rod 23. Hold rod 23 in place, then pull operating rod 54 to disengage the triangular teeth 55 on the surface of operating rod 54 from the triangular teeth 55 inside clamping column 26. Rotate operating rod 54 to rotate operating column 51, causing clamping block 27 to slide and its surface to fit against the inner wall of bearing hole. Release operating rod 54, and operating rod 54 will reset under the action of return spring 56. Finally, control cylinder to make lifting platform 61 contact gearbox housing, press two insertion rods 62 to disengage from spacer groove 64, and make contact block 28 fit against gearbox housing. Release insertion rod 62, and under the action of fixing spring 63, insertion rod 62 will insert into spacer groove 64, thus completing the position fixation of gearbox housing.

[0052] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A machining fixture for assembling an inclined hole of a gearbox housing, comprising a machining table (1), characterized in that, The surface of the processing table (1) is provided with a clamping mechanism, the clamping mechanism comprising: A base rod (21) is fixedly installed on the surface of the processing table (1), and a plurality of limiting teeth (22) are fixedly installed on the surface of the base rod (21); the length of the limiting teeth (22) is less than the length of the base rod (21); A number of clamping rods (23) are slidably disposed on the surface of the base rod (21). Each clamping rod (23) has a sliding tooth (24) fixedly connected to its inner wall. The sliding tooth (24) is adapted to the limiting tooth (22). A limiting ring (25) is detachably connected to the surface of the base rod (21). The surface of the limiting ring (25) contacts the side of the clamping rod (23) away from the processing table (1). A plurality of clamping posts (26) are provided, each of which is detachably mounted at the end of a clamping rod (23). A plurality of clamping blocks (27) are slidably connected inside the clamping posts (26), and the clamping blocks (27) are in contact with the inner wall of the bearing hole on the surface of the assembly box housing. The processing table (1) has a contact block (28) slidably disposed on its surface, and the side of the contact block (28) close to the processing table (1) is in contact with the assembly box shell.

2. The machining fixture for assembling oblique holes in a gearbox housing as described in claim 1, characterized in that, The processing table (1) has several meshing teeth (31) fixedly connected to its surface. The meshing teeth (31) are arranged in a ring array relative to the base rod (21). The clamping rod (23) is fixedly connected to several connecting teeth (32) at the end away from the limiting ring (25). The connecting teeth (32) are evenly divided into two groups and are symmetrically arranged opposite to the clamping rod (23). The connecting teeth (32) are adapted to the meshing teeth (31).

3. The machining fixture for assembling oblique holes in a gearbox housing as described in claim 2, characterized in that, The limiting ring (25) is fixedly connected to a number of clamping teeth (33) on the side near the processing table (1). The clamping teeth (33) are arranged in a ring array relative to the base rod (21). The clamping teeth (33) are adapted to the connecting teeth (32).

4. The machining fixture for assembling oblique holes in a gearbox housing as described in claim 1, characterized in that, The clamping rod (23) is threaded to an extension rod (34) at the end away from the base rod (21); the end of the extension rod (34) is in contact with the surface of the processing table (1); the surface of the clamping column (26) is provided with an inner groove (35), and the inner groove (35) is adapted to the extension rod (34).

5. A machining fixture for assembling oblique holes in a gearbox housing as described in claim 1, characterized in that, Two connecting shafts (41) are fixedly connected to the clamping column (26) near the clamping rod (23). An insertion groove (42) is provided on the surface of the clamping rod (23), and the insertion groove (42) is adapted to the connecting shaft (41).

6. A machining fixture for assembling oblique holes in a gearbox housing as described in claim 5, characterized in that, The clamping rod (23) has two connecting rods (43) slidably connected to its surface. A connecting spring (44) is fixedly connected between the connecting rod (43) and the clamping rod (23), and the connecting rod (43) is perpendicular to the insertion groove (42). The connecting shaft (41) has two transition grooves on its surface, and the transition grooves are adapted to the connecting rod (43).

7. A machining fixture for assembling oblique holes in a gearbox housing as described in claim 1, characterized in that, The clamping column (26) is rotatably connected to the operating column (51). The surfaces of the clamping column (26) and the operating column (51) are both provided with sliding grooves (52). The projections of the two sliding grooves (52) are superimposed and have an included angle. The surface of the clamping block (27) is fixedly connected to a sliding shaft (53). The sliding shaft (53) is adapted to the sliding groove (52).

8. The machining fixture for assembling oblique holes in a gearbox housing as described in claim 7, characterized in that, An operating rod (54) is slidably connected inside the operating column (51). Several triangular teeth (55) are fixedly connected to the end of the operating rod (54) and inside the clamping column (26). The triangular teeth (55) on the surfaces of the operating rod (54) and the clamping column (26) are misaligned. A return spring (56) is fixedly connected between the operating rod (54) and the operating column (51).

9. A machining fixture for assembling oblique holes in a gearbox housing as described in claim 1, characterized in that, A cylinder is fixedly connected to the surface of the processing table (1), and an elevation platform (61) is fixedly connected to the end of the piston rod inside the cylinder. The contact block (28) is detachably connected to the elevation platform (61).

10. A machining fixture for assembling oblique holes in a gearbox housing as described in claim 9, characterized in that, The contact block (28) has two slidingly connected insertion rods (62), and a fixing spring (63) is fixedly connected between the two insertion rods (62). The surface of the raising platform (61) is provided with an oblique groove and several interval grooves (64). The interval grooves (64) are adapted to the insertion rods (62), and the oblique grooves are connected to the several interval grooves (64).

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