Machining fixture for axle housings

Abstract

The application provides a machining tool for a bridge shell, comprising a workbench, two groups of first clamping assemblies arranged at intervals along the length direction of the workbench, the first clamping assembly being provided with a clamping groove extending along the length direction of the workbench, a second clamping assembly being arranged between the two groups of first clamping assemblies, at least two first clamping parts being arranged at intervals along the width direction of the workbench, the first clamping parts being arranged to form a first clamping area to limit the movement of the bridge shell body along the width direction of the workbench, and a third clamping assembly being arranged between the two groups of first clamping assemblies, at least two second clamping parts being arranged at intervals along the vertical direction, the second clamping parts being arranged to form a second clamping area to limit the movement of the bridge shell body along the vertical direction. The clamping assemblies are matched with the bridge shell to limit the horizontal movement and rotation of the bridge shell in the spatial coordinate system, so that the bridge shell is kept at a preset machining position, the positioning accuracy of the bridge shell is improved, and the waste rate of the bridge shell is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of bridge housing processing, and more specifically, to a processing fixture for bridge housings. Background Technology

[0002] The rear axle of a medium and heavy-duty truck is one of the most important components of a vehicle. The quality of the axle housing directly affects the quality of the vehicle and is closely related to its driving safety.

[0003] During the machining of the axle housing, a journal fixture is used to clamp the axle housing, and a machining center is used for positioning with the journal fixture of the axle housing. Due to insufficient positioning accuracy of the journal fixture, the center line of the journal fixture is easily misaligned with the machining center of the machining center, which increases the scrap rate of the axle housing.

[0004] There is currently no effective solution to the technical problem of poor positioning accuracy of the bridge housing. Summary of the Invention

[0005] The main objective of this invention is to provide a machining fixture for axle housings to solve the technical problem of poor positioning accuracy of axle housings.

[0006] To achieve the above objectives, according to one aspect of the present invention, a machining fixture for an axle housing is provided, comprising: a worktable; two sets of first clamping assemblies, the two sets of first clamping assemblies being spaced apart along the length direction of the worktable, each first clamping assembly having a clamping groove extending along the length direction of the worktable; and a second clamping assembly connected to the worktable, the second clamping assembly being located between the two sets of first clamping assemblies, the second clamping assembly having a plurality of first clamping portions, the first clamping portions being used to abut against the end face of the axle housing large flange, the plurality of first clamping portions... At least two of the clamping parts are spaced apart along the width direction of the worktable, and the plurality of first clamping parts surround to form a first clamping area to restrict the movement of the axle housing body along the width direction of the worktable; a third clamping assembly is connected to the worktable and is located between the two sets of first clamping assemblies. The third clamping assembly has a plurality of second clamping parts, which are used to abut against the outer peripheral surface of the axle housing large flange. At least two of the plurality of second clamping parts are spaced apart along the vertical direction, and the plurality of second clamping parts surround to form a second clamping area to restrict the movement of the axle housing body along the vertical direction.

[0007] Furthermore, the machining fixture also includes: a calibration assembly, which is rotatably connected to the worktable. The calibration assembly includes at least two calibration parts, and the calibration assembly rotates relative to the worktable so that each calibration part is in contact with the end face of the large flange of the axle housing.

[0008] Furthermore, the calibration assembly also includes: a support plate, which is rotatably connected to the worktable; and a movable plate, which is connected to the support plate via an elastic element. A calibration part is provided on the side of the movable plate away from the support plate. When the calibration part contacts the end face of the axle housing flange, the movable plate compresses the elastic element to press the calibration part against the end face of the axle housing flange.

[0009] Furthermore, the calibration assembly also includes: a guide hole located on the support plate; and a guide post connected to the movable plate, which is slidably connected to the support plate through the guide hole.

[0010] Furthermore, the calibration assembly also includes: a pressure testing pipeline connected to a gas source; a pressure testing channel passing through the calibration section, with the first end of the pressure testing channel connected to the pressure testing pipeline and the second end of the pressure testing channel facing the end face of the large flange of the axle housing; and a pressure sensor connected to the pressure testing pipeline, used to detect the gas pressure inside the pressure testing pipeline.

[0011] Furthermore, the machining fixture also includes: a positioning assembly, which is connected to the worktable. The positioning assembly has a positioning part, the axis of which extends along the length of the worktable. The positioning part is used to abut against the end face of the small flange of the axle housing to limit the axial position of the axle housing body.

[0012] Furthermore, the machining fixture also includes: a support assembly, which is connected to the worktable and is located between two sets of first clamping assemblies. The support assembly has multiple support parts for abutting against the outer peripheral surface of the axle housing flange, and the multiple support parts are arranged to form an accommodating space so that part of the outer peripheral surface of the axle housing flange is located within the accommodating space.

[0013] Furthermore, the first clamping assembly includes: a base, which is connected to the worktable via a locking assembly, and the locking assembly is adjusted to move the base along the length of the worktable; a first support base, which is connected to the base and has a first groove with one end open; and a clamping base, which is rotatably connected to the base and has a second groove with one end open. When the clamping base is rotated to a first preset position, the second groove and the first groove surround each other to form a clamping groove.

[0014] Furthermore, the second clamping assembly includes: a second support base connected to the worktable, wherein there are multiple second support bases spaced apart along the length direction of the worktable; a third support base connected to the worktable, wherein there are multiple third support bases spaced apart along the length direction of the worktable, wherein the multiple third support bases are arranged opposite to the second support bases along the length direction of the worktable; both the second and third support bases are provided with a first clamping portion, wherein the first clamping portion on the second support base and the first clamping portion on the third support base have a first position that is relatively close to each other to clamp the large flange of the axle housing, and a second position that is mutually distant to release the large flange of the axle housing.

[0015] Furthermore, the third clamping assembly includes: a fourth support base connected to the worktable, with a second clamping portion at its top; and a fifth support base located above the fourth support base and rotatably connected to the worktable, with a second clamping portion on the side of the fifth support base near the fourth support base. When the fifth support base is rotated to a second preset position, the second clamping portion on the fifth support base abuts against the outer peripheral surface of the axle housing flange. When the fifth support base is rotated to the second preset position, the second clamping portions on the fourth support base and the second clamping portions on the fifth support base are relatively close to each other to clamp the axle housing flange.

[0016] Applying the technical solution of this invention, two sets of first clamping assemblies respectively engage with the bridge housing journal through clamping grooves to restrict the bridge housing's axial movement. The second clamping assembly abuts against the end face of the bridge housing's large flange through multiple first clamping parts to restrict the bridge housing's movement along the width direction of the worktable. The third clamping assembly abuts against the outer peripheral surface of the bridge housing through multiple second clamping parts to restrict the bridge housing's movement in the vertical direction. These clamping assemblies, in conjunction with the bridge housing, restrict the bridge housing's horizontal movement and rotation within the spatial coordinate system. During processing, this keeps the bridge housing at a preset processing position, thereby improving the positioning accuracy of the bridge housing and reducing the scrap rate. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the machining tooling in this invention is shown;

[0019] Figure 2 This diagram illustrates the assembly relationship between the machining tooling and the bridge housing from a first-view perspective in this invention.

[0020] Figure 3 This diagram illustrates the assembly relationship between the machining tooling and the bridge housing from a second perspective in this invention.

[0021] Figure 4 A schematic diagram of the correction component in this invention is shown;

[0022] Figure 5 A schematic diagram showing the assembly relationship between the machining tooling and the measuring bar in this invention is shown.

[0023] The above figures include the following reference numerals:

[0024] 1. Workbench;

[0025] 11. Support block;

[0026] 2. First clamping assembly;

[0027] 21. Base; 22. Locking assembly; 23. First support seat; 231. First groove; 24. Pressing seat; 241. Second groove;

[0028] 221. Locking bolt; 222. Adjusting screw;

[0029] 3. Second clamping assembly;

[0030] 31. Second support base; 32. Third support base; 33. First clamping part;

[0031] 4. Third clamping component;

[0032] 41. Fourth support seat; 42. Fifth support seat; 43. Second clamping part;

[0033] 5. Calibration components;

[0034] 51. Support plate; 52. Movable plate; 53. Elastic element; 54. Support rod; 55. Correction part; 56. Pressure testing pipeline; 57. First driving element;

[0035] 521, Guide column; 551, Pressure testing channel;

[0036] 6. Positioning components;

[0037] 61. Positioning part; 62. Sixth support seat;

[0038] 7. Support components;

[0039] 71. Seventh support seat; 72. Support section;

[0040] 8. The axle housing body;

[0041] 81. Axle housing large flange; 82. Axle housing small flange; 83. Axle housing journal;

[0042] 9. Measuring rod. Detailed Implementation

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0046] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0047] Combination Figures 1 to 5 As shown, according to a specific embodiment of this application, a machining fixture for a bridge housing is provided.

[0048] Specifically, the machining fixture includes: a worktable 1, a first clamping assembly 2, a second clamping assembly 3, and a third clamping assembly 4. The first clamping assembly 2 consists of two sets, spaced apart along the length of the worktable 1. Each first clamping assembly 2 has a clamping groove extending along the length of the worktable 1. The second clamping assembly 3 is connected to the worktable 1 and located between the two sets of first clamping assemblies 2. The second clamping assembly 3 has multiple first clamping parts 33, which abut against the end face of the bridge housing flange 81. At least two of the multiple first clamping parts 33 are spaced apart along the width of the worktable 1, forming a first clamping area to restrict the movement of the bridge housing body 8 along the width of the worktable 1. The third clamping assembly 4 is connected to the worktable 1 and is located between the two sets of first clamping assemblies 2. The third clamping assembly 4 has a plurality of second clamping parts 43. The second clamping parts 43 are used to abut against the outer peripheral surface of the bridge housing large flange 81. At least two of the plurality of second clamping parts 43 are arranged at intervals in the vertical direction. The plurality of second clamping parts 43 surround to form a second clamping area to restrict the movement of the bridge housing body 8 in the vertical direction.

[0049] In the embodiments of this application, two sets of first clamping assemblies 2 respectively engage with the bridge housing journal 83 through clamping grooves to restrict the bridge housing from moving axially. Second clamping assemblies 3 abut against the end face of the bridge housing large flange 81 through multiple first clamping parts 33 to restrict the bridge housing from moving along the width direction of the worktable 1. Third clamping assemblies 4 abut against the outer peripheral surface of the bridge housing through multiple second clamping parts 43 to restrict the bridge housing from moving vertically. These clamping assemblies, in conjunction with the bridge housing, restrict the horizontal movement and rotation of the bridge housing within the spatial coordinate system. During processing, this keeps the bridge housing at a preset processing position, thereby improving the positioning accuracy of the bridge housing and reducing the scrap rate.

[0050] It should be noted that the axle housing includes axle housing body 8, axle housing journal 83, axle housing small flange 82, and axle housing large flange 81. The axle housing journal 83 is located at both ends of the axle housing body 8, the axle housing large flange 81 is located in the middle of the axle housing body 8, and the axle housing small flange 82 is located between the axle housing journal 83 and the axle housing large flange 81. The end face of the axle housing small flange 82 is perpendicular to the end face of the axle housing large flange 81.

[0051] In one exemplary embodiment of this application, the machining fixture further includes a correction assembly 5, which is rotatably connected to the worktable 1. The correction assembly 5 includes at least two correction parts 55, and rotates relative to the worktable 1 so that each correction part 55 is in contact with the end face of the bridge housing flange 81. A first driving member 57 is provided in the middle of the worktable 1. The first driving member 57 is generally a rotary cylinder, rotary hydraulic cylinder, or motor. The correction assembly 5 is connected to the driving end of the first driving member 57 by bolts, and the first driving member 57 is used to drive the correction assembly 5 to rotate relative to the worktable 1.

[0052] It should be noted that the correction part 55 has a correction end for fitting with the end face of the axle housing large flange 81, and the correction ends of each correction part 55 are all flush; after at least two correction parts 55 are fitted with the end face of the axle housing large flange 81, it indicates that the end face of the axle housing large flange 81 is in a vertical state and there is no tilting; the machining position of the axle housing is corrected by the correction assembly 5, which further improves the positioning accuracy of the axle housing and reduces the scrap rate of the axle housing.

[0053] Specifically, such as Figure 4 As shown, the calibration assembly 5 includes a support plate 51, a calibration part 55, an elastic element 53, and a movable plate 52. The support plate 51 is rotatably connected to the worktable 1, and the movable plate 52 is connected to the support plate 51 through the elastic element 53. The calibration part 55 is provided on the side of the movable plate 52 away from the support plate 51. When the calibration part 55 contacts the end face of the axle housing flange 81, the movable plate 52 compresses the elastic element 53 so that the calibration part 55 is pressed tightly against the end face of the axle housing flange 81. The support plate 51 has a support rod 54 in the middle and an elastic element 53 is a spring. The elastic element 53 is sleeved on the outside of the support rod 54. The first end of the elastic element 53 is connected to the support plate 51 and the second end of the elastic element 53 is connected to the movable plate 52. When the correction part 55 contacts the end face of the axle housing flange 81, the movable plate 52 compresses the elastic element 53, so that the elastic element 53 is in a compressed state. At this time, the elastic element 53 provides a restoring force so that the correction part 55 pushes the axle housing flange 81 to rotate and presses it against the end face of the axle housing flange 81.

[0054] To prevent the movable plate 52 from rotating relative to the support plate 51, the correction assembly 5 is also provided with guide holes and guide posts 521. Specifically, two guide holes are formed on the support plate 51, and the support rod 54 is located between the two guide holes. The guide posts 521 are connected to the movable plate 52 by bolts, and each guide post 521 corresponds to one of the guide holes. The guide posts 521 are slidably connected to the support plate 51 through the guide holes. When the movable plate 52 moves relative to the support plate 51, the guide posts 521 act as guides, so that the movable plate 52 moves along the axis of the guide posts 521.

[0055] In another exemplary embodiment of this application, the calibration assembly 5 further includes a pressure testing pipeline 56, a pressure testing channel 551, and a pressure sensor. Specifically, the pressure testing pipeline 56 is connected to an air source, the pressure testing channel 551 is disposed through the calibration part 55, the first end of the pressure testing channel 551 is connected to the pressure testing pipeline 56, the second end of the pressure testing channel 551 is disposed facing the end face of the bridge housing large flange 81, and the pressure sensor is connected to the pressure testing pipeline 56, and the pressure sensor is used to detect the air pressure in the pressure testing pipeline 56.

[0056] It should be noted that each calibration section 55 is equipped with a pressure testing channel 551, and these channels are connected in parallel, meaning all channels share a single pressure testing pipeline 56. After the calibration section 55 is fitted against the end face of the axle housing flange 81, gas is introduced into the pressure testing channel 551 through the pressure testing pipeline 56. Once the channel is full, a pressure sensor detects the gas pressure within the pipeline 56. If the pressure in the pipeline 56 reaches the preset pressure value, it indicates that the calibration section 55 is pressed tightly against the end face of the axle housing flange 81, meaning the flange is vertical. If the pressure in the pipeline 56 is lower than the preset pressure value, it indicates that the calibration section 55 is not pressed tightly against the flange, meaning the flange is tilted. Pressure testing further confirms the accuracy of the axle housing's positioning, thereby improving its positioning precision and reducing the scrap rate.

[0057] In another exemplary embodiment of this application, the machining fixture further includes a positioning component 6, which is connected to the worktable 1. The positioning component 6 has a positioning part 61, the axis of which extends along the length of the worktable 1. The positioning part 61 is used to abut against the end face of the bridge housing small flange 82 to define the axial position of the bridge housing body 8.

[0058] Specifically, such as Figures 1 to 3 As shown, the positioning component 6 includes a positioning part 61 and a sixth support base 62. The sixth support base 62 is fixedly connected to the base 21, wherein the base 21 is used to fix the first clamping component 2; the positioning part 61 is connected to the sixth support base 62, wherein the positioning part 61 can be a positioning column, hydraulic cylinder, air cylinder, electric push rod, etc.; in the embodiment of this application, the positioning part 61 is a hydraulic cylinder, and the positioning part 61 pushes the axle housing small flange 82 to a preset position and keeps it in contact with the axle housing small flange 82 to achieve axial positioning of the axle housing.

[0059] In another exemplary embodiment of this application, the machining fixture further includes a support assembly 7, which is connected to the worktable 1. The support assembly 7 is located between two sets of first clamping assemblies 2. The support assembly 7 has a plurality of support portions 72, which are used to abut against the outer peripheral surface of the bridge housing flange 81. The plurality of support portions 72 are arranged to form an accommodating space so that a portion of the outer peripheral surface of the bridge housing flange 81 is located within the accommodating space.

[0060] Specifically, such as Figure 1 As shown, the support assembly 7 includes a seventh support base 71 and support parts 72. The seventh support base 71 is located in the middle of the worktable 1 and is fixedly connected to the worktable 1. There are four support parts 72, which are rectangularly distributed on the top surface of the seventh support base 71. Each support part 72 is a vertically arranged support pin. The support assembly 7 is designed to support the middle of the bridge housing to prevent the bridge housing from bending due to gravity.

[0061] In another exemplary embodiment of this application, the first clamping assembly 2 includes: a base 21, a first support 23, and a clamping seat 24. The base 21 is connected to the worktable 1 via a locking assembly 22, and the locking assembly 22 is adjusted to move the base 21 along the length direction of the worktable 1. The first support 23 is connected to the base 21 and has a first groove 231 with one end open. The clamping seat 24 is rotatably connected to the base 21 and has a second groove 241 with one end open. When the clamping seat 24 is rotated to a first preset position, the second groove 241 and the first groove 231 surround each other to form a clamping groove.

[0062] Specifically, the locking assembly 22 includes a locking bolt 221 and an adjusting screw 222. A support block 11 is provided on the side of the worktable 1. The adjusting screw 222 is threadedly connected to the support block 11. By rotating the adjusting screw 222, the base 21 is pushed to move along the length direction of the worktable 1. After the position of the base 21 is adjusted, the base 21 is locked onto the worktable 1 by the locking bolt 221. The compression seat 24 is rotatably connected to the base 21. Specifically, the compression seat is connected to the base 21 through a linkage mechanism. The hydraulic cylinder drives the linkage mechanism to move, thereby pushing the compression seat 24 to rotate relative to the base 21. The first groove 231 and the second groove 241 are both V-shaped structures to reduce the alignment requirements between the bridge housing and the clamping groove, facilitating the placement of the bridge housing.

[0063] In another exemplary embodiment of this application, the second clamping assembly 3 includes: a second support base 31, a third support base 32, and a first clamping part 33. The second support base 31 is connected to the worktable 1, and there are multiple second support bases 31 spaced apart along the length of the worktable 1. The third support base 32 is also connected to the worktable 1, and there are multiple third support bases 32 spaced apart along the length of the worktable 1, with the multiple third support bases 32 positioned opposite to the second support bases 31 along the length of the worktable 1. Both the second support base 31 and the third support base 32 are provided with a first clamping part 33. The first clamping parts 33 on the second support base 31 and the third support base 32 have a first position where they are relatively close to each other to clamp the axle housing flange 81, and a second position where they are mutually distant to release the axle housing flange 81.

[0064] Specifically, there are two second support seats 31, which are spaced apart along the length of the worktable 1. Each second support seat 31 is provided with two first clamping parts 33, which are spaced apart vertically. The first clamping parts 33 on the second support seat 31 are hydraulic cylinders. The linear movement of the hydraulic cylinders is used to clamp and disengage from the large flange 81 of the axle housing. There are two third support seats 32, which are arranged one-to-one with the second support seats 31 along the length of the worktable 1. Each third support seat 32 is provided with two first clamping parts 33, which are spaced apart vertically. The first clamping parts 33 on the third support seat 32 are either support pins or hydraulic cylinders.

[0065] Further, the third clamping assembly 4 includes: a fourth support base 41, a fifth support base 42, and a second clamping part 43. The fourth support base 41 is connected to the worktable 1, and the second clamping part 43 is provided at the top of the fourth support base 41. The fifth support base 42 is located above the fourth support base 41 and is rotatably connected to the worktable 1. The second clamping part 43 is provided on the side of the fifth support base 42 near the fourth support base 41. When the fifth support base 42 is rotated to a second preset position, the second clamping part 43 on the fifth support base 42 abuts against the outer peripheral surface of the bridge housing large flange 81. When the fifth support base 42 is rotated to the second preset position, the second clamping parts 43 on the fourth support base 41 and the second clamping parts 43 on the fifth support base 42 are relatively close to each other to clamp the bridge housing large flange 81.

[0066] Specifically, the top of the fourth support 41 is inclined to be parallel to the tangent of the outer peripheral surface of the axle housing flange 81. The second clamping part 43 on the fourth support 41 is a hydraulic cylinder. Through the linear drive of the hydraulic cylinder, the second clamping part 43 is pressed tightly against the outer peripheral surface of the axle housing flange 81. The fifth support 42 is connected to the worktable 1 through a linkage mechanism. The hydraulic cylinder drives the linkage mechanism to rotate the fifth support 42 downward, so that the second clamping part 43 on the fifth support 42 is pressed tightly against the outer peripheral surface of the axle housing flange 81. The second clamping part 43 on the fifth support 42 is a support pin.

[0067] The machining fixtures described in the above embodiments are applied to machining centers, which are highly automated and multifunctional CNC machine tools used for milling, drilling, tapping, and other machining operations. Machining centers include X-axis, Y-axis, Z-axis, A-axis, and B-axis.

[0068] A-axis (swing axis): Usually connected to the worktable 1 or spindle box, it is used to realize rotation or oscillation in the vertical plane. The A-axis enables the machine tool to process the workpiece at different angles, thereby realizing more complex geometries.

[0069] B-axis (swivel axis): Usually mounted on the spindle and moves together with it. The B-axis allows the spindle to rotate or oscillate in the horizontal plane to achieve omnidirectional machining of the workpiece.

[0070] The A-axis is usually used in conjunction with the B-axis, enabling machining centers to process workpieces in three-dimensional space and achieve complex machining processes.

[0071] The X, Y, and Z axes are linear motion axes that control the movement of the machine tool in three main directions.

[0072] In the above embodiment, the machining fixture is connected to the B-axis. Before using the machining fixture, it is necessary to perform a coaxial test on the two first clamping components 2, that is, to test the coaxiality of the two clamping slots.

[0073] like Figure 5 As shown, the machining fixture is tested for coaxiality using a measuring bar 9 to ensure the coaxiality of the two clamping slots corresponding to the two first clamping components 2. The specific operating steps are as follows:

[0074] Step 1: Clamp the measuring rod 9 using the two first clamping components 2.

[0075] Step 2: A dial indicator is installed on the spindle end of the machining center. The coaxiality of the gauge bar 9 in Step 1 is measured by the dial indicator.

[0076] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0077] 1. The clamping assembly cooperates with the bridge housing to restrict the horizontal movement and rotation of the bridge housing in the spatial coordinate system. During the processing, the bridge housing is kept at the preset processing position to improve the positioning accuracy of the bridge housing and reduce the scrap rate of the bridge housing.

[0078] 2. The angle of the large flange 81 of the axle housing is corrected by the correction component 5 to avoid tilting of the large flange 81 of the axle housing, thereby further improving the positioning accuracy of the axle housing and reducing the scrap rate of the axle housing.

[0079] 3. The calibration component 5 further confirms the accuracy of the axle housing positioning through pressure testing, thereby improving the positioning accuracy of the axle housing and reducing the scrap rate of the axle housing.

[0080] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0081] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0082] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A machining fixture for bridge housings, characterized in that, include: Workbench (1); The first clamping assembly (2) consists of two sets of the first clamping assembly (2), which are spaced apart along the length direction of the worktable (1). The first clamping assembly (2) has a clamping groove that extends along the length direction of the worktable (1). The second clamping assembly (3) is connected to the worktable (1). The second clamping assembly (3) is located between two sets of first clamping assemblies (2). The second clamping assembly (3) has a plurality of first clamping parts (33). The first clamping parts (33) are used to abut against the end face of the bridge housing flange (81). At least two of the plurality of first clamping parts (33) are spaced apart along the width direction of the worktable (1). The plurality of first clamping parts (33) form a first clamping area to restrict the bridge housing body (8) from moving along the width direction of the worktable (1). The third clamping assembly (4) is connected to the worktable (1) and is located between the two sets of the first clamping assemblies (2). The third clamping assembly (4) has a plurality of second clamping parts (43). The second clamping parts (43) are used to abut against the outer peripheral surface of the bridge housing flange (81). At least two of the plurality of second clamping parts (43) are spaced apart in the vertical direction. The plurality of second clamping parts (43) form a second clamping area to restrict the bridge housing body (8) from moving in the vertical direction. The calibration assembly (5) is rotatably connected to the workbench (1). The calibration assembly (5) includes at least two calibration parts (55). The calibration assembly (5) rotates relative to the workbench (1) so that each calibration part (55) is in contact with the end face of the bridge housing flange (81). The correction component (5) also includes: Pressure testing pipeline (56), which is connected to the gas source; Pressure testing channel (551) is provided through the calibration part (55). The first end of the pressure testing channel (551) is connected to the pressure testing pipeline (56), and the second end of the pressure testing channel (551) is provided facing the end face of the bridge housing flange (81). A pressure sensor is connected to the pressure testing pipeline (56) and is used to detect the air pressure in the pressure testing pipeline (56).

2. The machining fixture for axle housing according to claim 1, characterized in that, The correction component (5) also includes: Support plate (51), which is rotatably connected to the worktable (1); The movable plate (52) is connected to the support plate (51) via an elastic element (53). The side of the movable plate (52) away from the support plate (51) is provided with the correction part (55). When the correction part (55) contacts the end face of the bridge housing flange (81), the movable plate (52) compresses the elastic element (53) so that the correction part (55) is pressed tightly against the end face of the bridge housing flange (81).

3. The machining fixture for a bridge housing according to claim 2, characterized in that, The correction component (5) also includes: A guide hole is located on the support plate (51); Guide post (521), the guide post (521) is connected to the movable plate (52), and the guide post (521) is slidably connected to the support plate (51) through the guide hole.

4. The machining fixture for axle housing according to claim 1, characterized in that, The machining fixture also includes: Positioning component (6), which is connected to the worktable (1), has a positioning part (61), the axis of which extends along the length of the worktable (1), and the positioning part (61) is used to abut against the end face of the bridge housing small flange (82) to limit the axial position of the bridge housing body (8).

5. The machining fixture for a bridge housing according to claim 1, characterized in that, The machining fixture also includes: A support assembly (7) is connected to the workbench (1). The support assembly (7) is located between two sets of first clamping assemblies (2). The support assembly (7) has multiple support parts (72). The support parts (72) are used to abut against the outer peripheral surface of the bridge housing flange (81). The multiple support parts (72) are arranged to form a receiving space so that part of the outer peripheral surface of the bridge housing flange (81) is located in the receiving space.

6. The machining fixture for a bridge housing according to claim 1, characterized in that, The first clamping component (2) includes: A base (21) is connected to the worktable (1) via a locking assembly (22). The locking assembly (22) is adjusted to allow the base (21) to move along the length of the worktable (1). The first support base (23) is connected to the base (21), and the first support base (23) is provided with a first groove (231) with one end open. The clamping seat (24) is rotatably connected to the base (21). The clamping seat (24) has a second groove (241) with one end open. When the clamping seat (24) is rotated to the first preset position, the second groove (241) and the first groove (231) surround each other to form the clamping groove.

7. The machining fixture for axle housing according to claim 1, characterized in that, The second clamping assembly (3) includes: The second support base (31) is connected to the worktable (1). There are multiple second support bases (31), and the multiple second support bases (31) are distributed at intervals along the length direction of the worktable (1). The third support (32) is connected to the workbench (1). There are multiple third support (32) and multiple third support (32) are distributed at intervals along the length direction of the workbench (1). The multiple third support (32) are arranged opposite to the second support (31) along the length direction of the workbench (1). The second support (31) and the third support (32) are both provided with the first clamping part (33). The first clamping part (33) on the second support (31) and the first clamping part (33) on the third support (32) have a first position that is relatively close to each other to clamp the bridge housing flange (81), and a second position that is relatively far apart to release the bridge housing flange (81).

8. The machining fixture for a bridge housing according to claim 1, characterized in that, The third clamping component (4) includes: The fourth support base (41) is connected to the workbench (1), and the top of the fourth support base (41) is provided with the second clamping part (43). The fifth support (42) is located above the fourth support (41). The fifth support (42) is rotatably connected to the workbench (1). The fifth support (42) is provided with a second clamping part (43) on the side of the fifth support (42) near the fourth support (41). When the fifth support (42) is rotated to a second preset position, the second clamping part (43) on the fifth support (42) abuts against the outer peripheral surface of the bridge housing flange (81). When the fifth support (42) is rotated to the second preset position, the second clamping part (43) on the fourth support (41) and the second clamping part (43) on the fifth support (42) are relatively close to each other to clamp the bridge housing large flange (81).

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