Axle box positioning fixture

Abstract

This invention relates to the field of machining technology, specifically disclosing a positioning fixture for a shaft box, including a base, a support mechanism, a positioning mechanism, a clamping mechanism, and two auxiliary support components. Both the two support components and the two auxiliary support components can support the shaft box along its vertical direction. By adjusting the vertical installation position of the two auxiliary support components, the angle at which the shaft box rotates around a first direction can be adjusted. By adjusting the position of the second positioning fixture along the first direction, the position of the shaft box along both the first and second directions can be quickly positioned, improving the positional consistency during batch processing of the shaft box. The clamping mechanism then clamps the shaft box to ensure its installation stability during processing. By connecting the positioning structure with the positioning fit structure of the processing equipment, the installation position of the base is positioned, thereby improving the processing efficiency and product quality of the shaft box.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and in particular to a positioning fixture for axle box. Background Technology

[0002] The axle box is a key component of the bogie running gear in locomotives and urban rail vehicles, and an important part of the axle box assembly. Connecting to the axle, the axle box links the wheelset to the bogie frame and car body, transferring the car body weight and load to the wheelset to ensure the locomotive's operational stability. As a movable joint connecting the wheelset to the frame, it also fixes the wheelbase and transmits traction, braking force, and lateral and longitudinal dynamic loads.

[0003] In related technologies, the shaft holes of the shaft box body are precision machined in multiple processes using ordinary machine tools. This not only involves numerous processing steps, long machine tool occupancy time, high space requirements, and large personnel investment, but also adds a significant amount of unnecessary auxiliary time. Furthermore, multiple machine tool changes require multiple clamping operations, and the position will change after multiple re-clampings, causing datum offset and affecting the relative positional accuracy of dimensions. Summary of the Invention

[0004] The purpose of this invention is to provide a positioning fixture for axle boxes, which can improve the processing efficiency and product quality of axle boxes.

[0005] This invention provides a positioning fixture for axle box, comprising:

[0006] The base includes a positioning structure for connection with processing equipment;

[0007] The support mechanism includes two support components, each for supporting the shaft housing, and the two support components are respectively disposed at both ends of the base along a first direction;

[0008] The positioning mechanism includes two first positioning clamps and a second positioning clamp arranged opposite to each other along a first direction. The first positioning clamp has a first V-shaped groove on the side facing the second positioning clamp, and the first V-shaped groove includes two V-shaped sidewalls arranged opposite to each other along a second direction. The second positioning clamp has a second V-shaped groove on the side facing the first positioning clamp, and the second V-shaped groove includes two V-shaped sidewalls arranged opposite to each other along the second direction. The first positioning clamp is fixed to one of the supporting components, and the second positioning clamp is adjustablely positioned on the other supporting component along the first direction.

[0009] A clamping mechanism that can clamp the axle box body to the support assembly;

[0010] Two support auxiliary components are respectively disposed at both ends of the base along the second direction; each support auxiliary component includes a support auxiliary member, which is vertically adjustable on the base.

[0011] The first direction and the second direction are perpendicular to each other and to the vertical direction.

[0012] As an optional solution for the positioning fixture of the axle box, the support assembly includes:

[0013] Support base, which is fixed to the base;

[0014] Multiple support members are provided on the support base, and the multiple support members are arranged in a polygonal pattern.

[0015] As an optional solution for the positioning fixture of the axle box, in the support assembly corresponding to the second positioning fixture, a plurality of the support members include fixed support members and movable support members. The fixed support members are fixed to the support base, and the movable support members are disposed in the second positioning fixture.

[0016] As an optional solution for the positioning fixture of the axle box, the top surface of the support includes a first surface and two second surfaces respectively connected to the two ends of the first surface along the second direction, the second surfaces being set at an angle to the first surface; and / or,

[0017] The top surface of the base includes a third surface and two fourth surfaces respectively connected to the two ends of the third surface along the second direction, wherein the fourth surfaces are arranged at an angle to the third surface.

[0018] As an optional solution for the positioning fixture of the axle box, the clamping mechanism includes two first clamping components, which are respectively disposed on the two support components; the first clamping component includes a first pressing block, which is vertically adjustable on the support component.

[0019] As an optional solution for positioning the axle box, the bottom of the first pressure block is provided with a stepped surface.

[0020] As an optional solution for the positioning fixture of the shaft box, the clamping mechanism further includes a second clamping assembly, which includes:

[0021] A bracket, which is fixed to the base or the support assembly;

[0022] The second pressure block is vertically adjustable and positioned on the bracket; along the first direction, the second pressure block is located between the two support components.

[0023] As an optional solution for the positioning fixture of the axle box, the bracket includes:

[0024] Two columns are respectively disposed on two support components. Each support component includes a first side and a second side disposed opposite to each other along a second direction. One of the two columns is disposed on the first side of the corresponding support component, and the other is disposed on the second side of the corresponding support component.

[0025] A crossbeam, the two ends of which are connected to the two columns respectively along its axial direction, and the second pressure block is adjustablely positioned on the crossbeam along the vertical direction.

[0026] As an optional solution for the positioning fixture of the axle box, the second pressure block is adjustablely positioned on the crossbeam along the axial direction of the crossbeam.

[0027] As an optional solution for the positioning fixture of the axle box body, the positioning structure includes a first positioning part, the cross-section of which is polygonal; the cross-section of the first positioning part is a section perpendicular to the vertical direction; and / or,

[0028] The positioning structure includes a second positioning part, the cross-section of which is circular; the cross-section of which is perpendicular to the vertical direction.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] The axle box positioning fixture of the present invention supports both ends of the axle box along the first direction through two support components and supports both ends of the axle box along the second direction through two support auxiliary components. This can improve the support stability of the axle box. Moreover, by adjusting the installation position of the two support auxiliary components along the vertical direction, the angle of rotation of the axle box around the first direction can be adjusted, so that the surface of the axle box to be machined is perpendicular to the feed direction of the tool, which is beneficial to improving the machining accuracy of the shaft hole.

[0031] By adjusting the position of the second positioning fixture along the first direction, the axle box body can be clamped by the second positioning fixture and the first positioning fixture to position the axle box body along the first direction. At the same time, one end of the axle box body along the first direction can move towards the bottom of the first V-shaped groove along the second direction under the guidance of the side wall of the first groove, and the other end of the axle box body along the first direction can move towards the bottom of the second V-shaped groove along the second direction under the guidance of the side wall of the second groove, thereby positioning the axle box body along the second direction. This improves the positioning accuracy and efficiency of the axle box body clamping and also improves the positional consistency of the axle box body during batch processing. The axle box body is then clamped by a clamping mechanism to ensure the installation stability of the axle box body during the processing.

[0032] By connecting the positioning structure with the positioning matching structure of the processing equipment, the installation position of the base can be quickly and accurately positioned, improving the consistency of the base's position on the processing equipment.

[0033] Compared with the prior art, the positioning fixture for the axle box body in this embodiment can complete the machining of the shaft hole, threaded hole, etc. of the axle box body in one clamping, which can avoid the reference offset problem caused by multiple clamping, improve the positioning accuracy and position consistency of the axle box body clamping, and simplify the machining process, thereby improving the machining efficiency and product quality of the axle box body. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the axle box positioning fixture in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the first structure of the axle box positioning fixture and the axle box in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the second structure of the axle box positioning fixture and the axle box in an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the crossbeam and the second pressure block in an embodiment of the present invention;

[0038] Figure 5 This is a schematic diagram of the supporting auxiliary component in an embodiment of the present invention;

[0039] Figure 6 for Figure 5 A cross-sectional view of plane AA.

[0040] In the picture:

[0041] 100. Axle box body; 1. Base; 11. Positioning structure; 111. First positioning part; 112. Second positioning part; 12. Clearance groove; 13. Third surface; 14. Fourth surface; 15. Lifting lug; 2. Support mechanism; 21. Support assembly; 211. Support base; 2111. First surface; 2112. Second surface; 212. Support member; 2121. Fixed support member; 2122. Movable support member; 3. Positioning mechanism; 31. First positioning fixture; 311. First V-groove; 32. Second positioning fixture; 321. 4. Pressing mechanism; 41. First pressing assembly; 411. First pressing block; 412. First bolt; 42. Second pressing assembly; 421. Bracket; 4211. Column; 4212. Crossbeam; 42121. Long hole; 422. Second pressing block; 423. Adjusting seat; 424. Second screw; 425. Second nut; 426. Locking bolt; 427. Locking nut; 5. Support auxiliary assembly; 51. Support auxiliary component; 511. Abutment part; 52. Base; 53. Elastic component; 54. Auxiliary locking component. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0049] like Figures 1 to 6As shown, this embodiment provides a shaft housing positioning fixture, including a base 1, a support mechanism 2, a positioning mechanism 3, a clamping mechanism 4, and two support auxiliary components 5. The base 1 includes a positioning structure 11 for connecting with the positioning and mating structure of the processing equipment; the support mechanism 2 includes two support components 21, each for supporting the shaft housing 100, which are respectively located at both ends of the base 1 along a first direction; the positioning mechanism 3 includes two first positioning clamps 31 and a second positioning clamp 32 arranged opposite to each other along the first direction. The first positioning clamp 31 has a first V-groove 311 on the side facing the second positioning clamp 32. The first V-groove 311 includes two first groove sidewalls arranged in a V-shape, which are arranged along a second direction. The first positioning fixture 32 is provided with a second V-shaped groove 321 on the side facing the first positioning fixture 31. The second V-shaped groove 321 includes two V-shaped second groove sidewalls, which are arranged opposite each other along the second direction. The first positioning fixture 31 is fixed to one of the support components 21, and the second positioning fixture 32 is adjustablely disposed on the other support component 21 along the first direction. The clamping mechanism 4 can clamp the axle box 100 to the support component 21. Two support auxiliary components 5 are respectively disposed at both ends of the base 1 along the second direction. The support auxiliary components 5 include support auxiliary parts 51, which are adjustablely disposed on the base 1 along the vertical direction. The first direction and the second direction are perpendicular to the vertical direction.

[0050] It should be noted that the shaft box 100 has a surface to be machined on one side along the second direction, and the shaft hole to be machined is located on the surface to be machined. That is to say, the axial direction of the shaft hole to be machined is parallel to the second direction.

[0051] The shaft box positioning fixture of this embodiment supports the two ends of the shaft box 100 along the first direction through two support components 21, and supports the two ends of the shaft box 100 along the second direction through two support auxiliary components 5. This can improve the support stability of the shaft box 100. Moreover, by adjusting the installation position of the two support auxiliary components 51 along the vertical direction, the angle of rotation of the shaft box 100 around the first direction can be adjusted, so that the surface to be machined of the shaft box 100 is perpendicular to the feed direction of the tool, which is beneficial to improving the machining accuracy of the shaft hole.

[0052] By adjusting the position of the second positioning fixture 32 along the first direction, the axle box 100 can be clamped by the second positioning fixture 32 and the first positioning fixture 31 to position the axle box 100 along the first direction. At the same time, one end of the axle box 100 along the first direction can move towards the bottom of the first V-groove 311 along the second direction under the guidance of the side wall of the first groove, and the other end of the axle box 100 along the first direction can move towards the bottom of the second V-groove 321 along the second direction under the guidance of the side wall of the second groove, thereby positioning the axle box 100 along the second direction, thereby improving the positioning accuracy and efficiency of the axle box 100 clamping, and also improving the positional consistency of the axle box 100 during batch processing. Then, the axle box 100 is clamped by the clamping mechanism 4 to ensure the installation stability of the axle box 100 during the processing.

[0053] By connecting the positioning structure 11 with the positioning and fitting structure of the processing equipment, the installation position of the base 1 can be quickly and accurately positioned, thereby improving the positional consistency of the base 1 installed on the processing equipment.

[0054] Compared with the prior art, the positioning fixture of the axle box body in this embodiment can complete the machining of the shaft hole, threaded hole and other parts of the axle box body 100 in one clamping, which can avoid the reference offset problem caused by multiple clamping, improve the positioning accuracy and positional consistency of the axle box body 100 clamping, and simplify the machining process, thereby improving the machining efficiency and product quality of the axle box body 100.

[0055] It should be noted that before the axle box 100 is assembled with the axle box positioning fixture of this embodiment, the axle box 100 has already been machined with a first machined surface and a second machined surface. That is to say, the flatness of the first machined surface and the second machined surface is better, thereby improving the clamping stability and positioning accuracy of the axle box 100. Specifically, two support components 21 are respectively supported on the first machined surface. Two support auxiliary components 5 are supported on the second machined surface.

[0056] In some embodiments, the support assembly 21 includes a support base 211 and a plurality of support members 212. The support base 211 is fixed to the base 1. The plurality of support members 212 are all disposed on the support base 211 and are arranged in a polygonal configuration, thereby improving the support stability of the support assembly 21 on the shaft housing 100, which is beneficial to improving the installation stability of the shaft housing 100 during the processing and thus improving product quality. Specifically, the top ends of the plurality of support members 212 all abut against the first processing surface.

[0057] Specifically, in the same support assembly 21, there are four support members 212 arranged in a square pattern. That is, the four support members 212 are divided into two groups. In one group, two support members 212 are spaced apart along a first direction, and in the other group, two support members 212 are spaced apart along a second direction. Specifically, the tops of the four support members 212 are located on the same plane.

[0058] In some embodiments, the top surface of the support 211 includes a first surface 2111 and two second surfaces 2112 respectively connected to the two ends of the first surface 2111 along the second direction. The second surfaces 2112 are set at an angle to the first surface 2111, which can avoid some structures of the axle box 100, thereby improving the stability and positioning accuracy of the axle box 100.

[0059] Specifically, the second surface 2112 includes a first end and a second end disposed opposite to each other along a second direction, with the first end connected to the first surface 2111. The second surface 2112 is inclined downwards from the first end to the second end, resulting in better obstacle avoidance.

[0060] In some embodiments, in the support assembly 21 corresponding to the second positioning fixture 32, a plurality of support members 212 include a fixed support member 2121 and a movable support member 2122. The fixed support member 2121 is fixed to the support base 211, and the movable support member 2122 is disposed on the second positioning fixture 32. Thus, the movable support member 2122 can not only support the axle box 100, but also prevent the movable support member 2122 from interfering with the adjustment of the position of the second positioning fixture 32 along the first direction. This is beneficial to improving the convenience of operation of the axle box positioning fixture and improving the stability and positioning accuracy of the axle box 100 clamping.

[0061] Specifically, the positioning mechanism 3 also includes a slide block, which is slidably disposed on the support base 211 along the first direction. The second positioning clamp 32 and the movable support member 2122 are both fixedly disposed on the slide block.

[0062] Furthermore, the positioning mechanism 3 also includes a clamp driving assembly for driving the second positioning clamp 32 to move along the first direction.

[0063] Furthermore, the clamping drive assembly includes a first screw and a first nut. The first screw is rotatably mounted on the support base 211, and the first nut is mounted on the slide. The first nut is sleeved on the outside of the first screw and threadedly connected to it. By rotating the first screw, the first nut can be driven to move the slide along the first direction, thereby adjusting the position of the second positioning clamp 32 along the first direction. The second positioning clamp 32 and the first positioning clamp 31 clamp the axle box 100 to position it. It should be noted that the clamping of the axle box 100 mainly relies on the clamping mechanism 4 for clamping and fixing. The second positioning clamp 32 and the first positioning clamp 31 mainly serve to position the axle box 100. Therefore, after adjusting the position of the second positioning clamp 32 along the first direction, there is no need to set a locking mechanism to lock the second positioning clamp 32 to the support base 211.

[0064] In some embodiments, the clamping mechanism 4 includes two first clamping components 41, which are respectively disposed on two support components 21. Each first clamping component 41 includes a first pressing block 411, which is adjustable in position along the vertical direction on the support component 21. By clamping and fixing the two ends of the axle box 100 along the first direction with the two first clamping components 41, the stability of the axle box 100 clamping can be improved. By adjusting the height of the first pressing block 411 along the vertical direction, the axle box 100 can be clamped onto the support component 21. This not only makes operation convenient but also allows for clamping of axle boxes 100 of different shapes and sizes, which is beneficial to improving the versatility of the axle box positioning fixture.

[0065] In some embodiments, the bottom of the first pressure block 411 is provided with a stepped surface. It should be noted that the axle box 100 is provided with a through hole corresponding to the first pressure block 411. When the axle box 100 is placed on the support assembly 21, the through hole is aligned with the first pressure block 411, so that the bottom end of the first pressure block 411 can be inserted into the through hole and abut against the axle box 100 through the stepped surface, which helps to improve the stability of the axle box 100 clamping.

[0066] Specifically, the first clamping assembly 41 also includes a first bolt 412, one end of which passes through the first clamping block 411 and is threadedly connected to the support base 211. After inserting the bottom end of the first clamping block 411 into the through hole of the axle box 100, one end of the first bolt 412 passes through the first clamping block 411 and the through hole and is threadedly connected to the support base 211. Tightening the first bolt 412 will cause the first clamping block 411 to clamp and fix the axle box 100.

[0067] Furthermore, the first pressure block 411 is rectangular and has two stepped surfaces, which are located on both sides of the first pressure block 411, thereby preventing the first pressure block 411 from rotating and improving the positioning accuracy of the axle box 100 clamping.

[0068] In some embodiments, the clamping mechanism 4 further includes a second clamping component 42, which includes a bracket 421 and a second clamping block 422. The bracket 421 is fixed to the base 1 or the support component 21; the second clamping block 422 is adjustablely disposed on the bracket 421 in the vertical direction; and in the first direction, the second clamping block 422 is located between the two support components 21. That is, the second clamping block 422 can press against the top of the shaft box 100, further improving the clamping stability of the shaft box 100, ensuring that the deformation of the upper part of the shaft hole is controllable, and helping to improve the machining accuracy of the shaft hole.

[0069] In some embodiments, the bracket 421 includes two columns 4211 and a crossbeam 4212. The two columns 4211 are respectively disposed on two support components 21. The support components 21 include a first side and a second side disposed opposite to each other along a second direction. One of the two columns 4211 is disposed on the first side of the corresponding support component 21, and the other is disposed on the second side of the corresponding support component 21. The two ends of the crossbeam 4212 along its axial direction are respectively connected to the two columns 4211. The second pressure block 422 is vertically adjustable and disposed on the crossbeam 4212. It should be noted that the axle box 100 has a shaft hole to be machined in the middle of the axle box 100 along the first direction. That is, when machining the axle box 100, the cutting tool is located in the middle of the axle box 100 along the first direction. Through the above arrangement, the second pressure block 422 can be located in the middle of the axle box 100 along the first direction to improve the stability of the axle box 100 clamping, and the columns 4211 can avoid the cutting tool, improving the convenience of machining. By adjusting the height of the second pressure block 422 in the vertical direction, the axle box 100 can be pressed and fixed. This is not only convenient to operate, but also allows for clamping of axle box 100s of different shapes and sizes, which helps to improve the versatility of the axle box positioning fixture.

[0070] In some embodiments, the second pressure block 422 is adjustablely positioned on the crossbeam 4212 along the axial direction of the crossbeam 4212, which facilitates the alignment of the second pressure block 422 with the part of the axle box 100 that needs to be pressed, thereby improving the stability of the axle box 100 clamping and improving the machining accuracy of the axle box 100.

[0071] Specifically, the second clamping assembly 42 also includes an adjusting seat 423, a second screw 424, and a second nut 425. The adjusting seat 423 is adjustablely positioned on the crossbeam 4212 along the axial direction of the crossbeam 4212. The second screw 424 passes through the adjusting seat 423 and is threadedly connected to the adjusting seat 423. The second pressure block 422 is fixed to the bottom end of the second screw 424. The second nut 425 is sleeved on the outside of the second screw 424 and is threadedly connected to the second screw 424. Loosening the second nut 425 and rotating the second screw 424 can adjust the height of the second pressure block 422 in the vertical direction. After the height of the second pressure block 422 is adjusted, tightening the second nut 425 can lock the second screw 424 and the adjusting seat 423 to ensure that the second pressure block 422 presses against the shaft housing 100.

[0072] Furthermore, the crossbeam 4212 is provided with an elongated hole 42121, and the second clamping assembly 42 also includes a locking bolt 426 and a locking nut 427. The locking bolt 426 passes through the adjusting seat 423, and one end of the locking bolt 426 passes through the elongated hole 42121 and is threadedly connected to the locking nut 427. When it is necessary to adjust the position of the adjusting seat 423 along the axial direction of the crossbeam 4212, the locking nut 427 is loosened to move the adjusting seat 423; after the adjusting seat 423 is moved to the appropriate position, the locking nut 427 is tightened to lock the adjusting seat 423 to the crossbeam 4212, making the operation convenient. Furthermore, there are two sets of locking bolts 426 and locking nuts 427, which are respectively located on both sides of the second screw 424 to improve the installation stability of the adjusting seat 423.

[0073] In some embodiments, the positioning structure 11 includes a first positioning part 111, the cross-section of which is polygonal; the cross-section of the first positioning part 111 is a section perpendicular to the vertical direction, thereby enabling the shaft box positioning fixture to be installed quickly and accurately at a predetermined position on the processing equipment, improving the positional consistency and convenience of the shaft box positioning fixture installation.

[0074] In some embodiments, the positioning structure 11 further includes a second positioning part 112, the cross-section of which is circular; the cross-section of the second positioning part 112 is a section perpendicular to the vertical direction, thereby further improving the positional consistency and convenience of the axle box positioning fixture installation.

[0075] For example, the first positioning part 111 is a rhomboid positioning pin. The positioning and fitting structure of the processing equipment includes a rhomboid positioning hole that matches the rhomboid positioning pin. Further, the second positioning part 112 is a cylindrical positioning pin. The positioning and fitting structure of the processing equipment includes a circular positioning hole that matches the cylindrical positioning pin.

[0076] In some embodiments, the top surface of the base 1 is provided with a clearance groove 12. Specifically, there are two clearance grooves 12, which are located on both sides of the base 1 along the second direction, and the clearance groove 12 is located in the middle of the base 1 along the first direction. That is to say, the clearance groove 12 can avoid the cutting tool, thereby improving the convenience of the cutting tool in processing.

[0077] In some embodiments, the top surface of the base 1 includes a third surface 13 and two fourth surfaces 14 respectively connected to the two ends of the third surface 13 along the second direction. The fourth surfaces 14 and the third surface 13 are arranged at an angle, which can avoid some structures of the shaft box 100 and the cutting tool, thereby improving the stability and positioning accuracy of the shaft box 100 clamping and improving the convenience of the cutting tool for processing.

[0078] Specifically, the fourth surface 14 includes a third end and a fourth end disposed opposite to each other along the second direction, with the third end connected to the third surface 13. The fourth surface 14 is inclined downwards from the third end to the fourth end, resulting in better obstacle avoidance.

[0079] In some embodiments, the base 1 is provided with a plurality of lifting lugs 15, which facilitates the movement of the axle box positioning fixture by means of hoisting, thereby improving the convenience of assembling the axle box positioning fixture with the processing equipment. Exemplarily, there are four lifting lugs 15, which are respectively located at the four corners of the base 1.

[0080] In some embodiments, such as Figure 1 , Figure 5 and Figure 6As shown, the support auxiliary assembly 5 also includes a base 52, an elastic element 53, and an auxiliary locking element 54. The base 52 has an adjustment hole, the axis of which is parallel to the vertical direction. The elastic element 53 is disposed within the adjustment hole, and one end of the support auxiliary element 51 is inserted into the adjustment hole and abuts against the elastic element 53. That is, one end of the support auxiliary element 51 can move vertically within the adjustment hole. Furthermore, the auxiliary locking element 54 passes through the wall of the adjustment hole and is threadedly connected to the base 52. That is, the auxiliary locking element 54 can move in a second direction so that one end of the auxiliary locking element 54 abuts against the support auxiliary element 51, thereby locking or unlocking the support auxiliary element 51 from the base 52. It should be noted that when the shaft box 100 is placed on the support mechanism 2, the shaft box 100 presses down on the support auxiliary member 51, which in turn causes the support auxiliary member 51 to compress the elastic member 53, causing the elastic member 53 to undergo elastic deformation. Then, the operator can adjust the height of both ends of the shaft box 100 along the second direction, that is, adjust the angle at which the shaft box 100 rotates around the first direction. When the shaft box 100 is adjusted to the correct position (for example, the surface to be machined on the shaft box 100 is perpendicular to the feed direction of the tool), the auxiliary locking member 54 is rotated and pressed against the support auxiliary member 51, thus locking the support auxiliary member 51 to the base 52. This provides stable support to the shaft box 100, ensuring that the surface to be machined on the shaft box 100 is perpendicular to the feed direction of the tool, and making operation more convenient. When it is necessary to readjust the height of the support auxiliary member 51 in the vertical direction, the auxiliary locking member 54 is released, and the angle of the shaft box 100 is adjusted.

[0081] In some embodiments, the support member 51 has an abutment portion 511 on the side facing the auxiliary locking member 54, and the auxiliary locking member 54 contacts the abutment portion 511, thereby increasing the contact area between the auxiliary locking member 54 and the support member 51, which is beneficial to improving the stability of the auxiliary locking member 54 in locking the support member 51 and the base 52.

[0082] Specifically, the abutting part 511 is an abutting plane. For example, the supporting auxiliary member 51 has a groove on the side facing the auxiliary locking member 54, and the abutting plane is the inner wall of the groove.

[0083] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A positioning fixture for axle box, characterized in that, include: The base includes a positioning structure for connection with processing equipment; The support mechanism includes two support components, each for supporting the shaft housing, and the two support components are respectively disposed at both ends of the base along a first direction; The positioning mechanism includes two first positioning clamps and a second positioning clamp arranged opposite to each other along a first direction. The first positioning clamp has a first V-shaped groove on the side facing the second positioning clamp, and the first V-shaped groove includes two V-shaped sidewalls arranged opposite to each other along a second direction. The second positioning clamp has a second V-shaped groove on the side facing the first positioning clamp, and the second V-shaped groove includes two V-shaped sidewalls arranged opposite to each other along the second direction. The first positioning clamp is fixed to one of the supporting components, and the second positioning clamp is adjustablely positioned on the other supporting component along the first direction. A clamping mechanism that can clamp the axle box body to the support assembly; Two support auxiliary components are respectively disposed at both ends of the base along the second direction; each support auxiliary component includes a support auxiliary member, which is vertically adjustable on the base. The first direction and the second direction are perpendicular to the vertical direction in each other; The support assembly includes a support base and a plurality of support members. The support base is fixed to the base. The plurality of support members are all disposed on the support base and are arranged in a polygonal pattern. The top surface of the support base includes a first surface and two second surfaces respectively connected to the two ends of the first surface along the second direction, the second surfaces being arranged at an angle to the first surface; and / or, the top surface of the base includes a third surface and two fourth surfaces respectively connected to the two ends of the third surface along the second direction, the fourth surfaces being arranged at an angle to the third surface; The clamping mechanism includes two first clamping components, which are respectively disposed on the two support components; each first clamping component includes a first pressing block, which is vertically adjustable on the support component; The clamping mechanism further includes a second clamping assembly, which includes a bracket and a second clamping block. The bracket is fixed to the base or the support assembly. The second clamping block is vertically adjustable on the bracket. Along the first direction, the second clamping block is located between the two support assemblies. The bracket includes two uprights and a crossbeam. The two uprights are respectively disposed on two support components. Each support component includes a first side and a second side disposed opposite to each other along a second direction. One of the two uprights is disposed on the first side of the corresponding support component, and the other is disposed on the second side of the corresponding support component. The two ends of the crossbeam along its axial direction are respectively connected to the two uprights. The second pressure block is vertically adjustable on the crossbeam.

2. The axle box positioning fixture according to claim 1, characterized in that, In the support assembly corresponding to the second positioning fixture, the plurality of support members include fixed support members and movable support members. The fixed support members are fixed to the support base, and the movable support members are disposed in the second positioning fixture.

3. The axle box positioning fixture according to claim 1, characterized in that, The bottom of the first pressing block is provided with a stepped surface.

4. The axle box positioning fixture according to claim 1, characterized in that, The second pressure block is adjustablely positioned on the crossbeam along its axial direction.

5. The axle box positioning fixture according to any one of claims 1-4, characterized in that, The positioning structure includes a first positioning part, the cross-section of which is polygonal; the cross-section of the first positioning part is perpendicular to the vertical direction; and / or, The positioning structure includes a second positioning part, the cross-section of which is circular; the cross-section of which is perpendicular to the vertical direction.

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