Driving axle housing machining method

Abstract

The invention discloses a drive axle housing machining method, and relates to the technical field of automobile part machining, the machining method is carried out based on a machining device, the machining device comprises a base, a sliding table is arranged on the base, a clamp assembly is slidably connected to the sliding table, and a cutter assembly is connected to the interior of the clamp assembly; two groups of pressing devices are arranged on the base, the pressing devices are used for fixing an axle housing, one side of the base is fixedly connected with a four-axis rotary table, the outer side of the four-axis rotary table is connected with a three-jaw chuck, and the other side of the base is fixedly connected with an ejector pin; two sets of cutters are used for machining the axle housing at the same time, multiple procedures are completed in one-time clamping, the production technology is simplified, the machining precision error caused by multiple times of clamping is reduced, in the axle housing machining process, the axle housing is further fixed through the pressing assembly, the deviation situation in the machining process is avoided, and the machining efficiency is improved. And the machining precision of the axle housing is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, and in particular to a driving axle housing processing method. Background Art

[0002] The automobile drive axle housing is a key supporting component of the axle assembly. Its main function is to support the quality of the car. The two ends of the outside of the axle are used to install the brake base and connect the wheels. The inside is used to install the main reducer, differential, half-axles and other components, protect the transmission system components installed on the bridge housing and prevent mud and water from infiltrating, and fix the axial relative position of the left and right drive wheels.

[0003] The Chinese patent application number 202322740008.9 discloses a hydraulic clamp for processing a drive axle housing, comprising: a base, on which a plurality of main positioning seats for positioning a workpiece are arranged, on which a clamping device and a rotating positioning device for clamping the workpiece are arranged, and the clamping device cooperates with the rotating positioning device to clamp and position the workpiece; and a power mechanism is connected to the clamping device. The processing device is difficult to operate and has low processing efficiency.

[0004] For heavy-duty vehicles, in order to ensure sufficient strength, rigidity and lightness, the bridge housing blank is usually made of integral casting hollow blank. Since the integral casting bridge housing is formed in one go, it has better integrity and uniformity, and can provide better structural stability and strength. At present, the bridge housing products are diverse in models, with high precision requirements, complex processing procedures and inconsistent positioning benchmarks, resulting in large errors in position accuracy and dimensional accuracy.

[0005] Therefore, it is necessary to design a drive axle housing processing method to solve the above-mentioned technical problems. Summary of the invention

[0006] The purpose of the present invention is to disclose a method for processing a drive axle housing to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A method for processing a drive axle housing, the method is performed based on a processing device, the processing device comprises a base, a slide is arranged above the base, a fixture assembly is slidably connected to the slide, and a tool assembly is connected inside the fixture assembly; The base is provided with two sets of clamping devices, which are used to fix the bridge housing. A four-axis turntable is fixedly connected to one side of the base, a three-jaw chuck is connected to the outside of the four-axis turntable, and an ejector pin is fixedly connected to the other side of the base; The bridge housing includes a bridge package, and the bridge package symmetrically extends shaft necks to both sides. A connecting plate is provided on the outer side of the shaft neck, and the connecting plate is connected to the shaft tube outwardly. The bridge package, the shaft neck, the connecting plate and the shaft tube are cast as a whole.

[0008] Preferably, the tool assembly comprises a tool rod, one end of which is provided with a tool pressing groove, a tool is connected inside the tool pressing groove, and the tool is fixedly connected to the tool rod by a bolt.

[0009] Preferably, the clamp assembly comprises a sliding block, a moving block is slidably connected to the sliding block, and a side wall of the moving block is rotatably connected to a limiting rod.

[0010] Preferably, the clamping device is arranged on the axle tubes on both sides of the bridge housing.

[0011] Preferably, the upper end surface and the lower end surface of the knife bar at one end close to the clamp assembly are both provided with bar surface grooves, and the bar surface grooves are fixedly connected to the clamp assembly.

[0012] A method for processing a drive axle housing comprises the following steps: S1: Use a three-jaw chuck to clamp one end of the axle housing, and use a thimble to push and lock the other end, so that the axle housing is coaxially arranged; S2: Control the synchronous movement of two sets of tool assemblies, and use three steps of rough machining, semi-finishing and finishing to turn and mill the outer circle of the shaft tube on both sides; S3: The outer circle of the journal is machined by turning instead of grinding to ensure that the outer circle of the journal meets the requirements; S4: Two sets of clamping devices are used to fix the bridge housing, and one side of the bridge package is processed in two steps: rough milling and fine milling; Loosen the clamping device to release the fixation of the bridge housing, use the four-axis turntable to control the flipping of the bridge housing, use the clamping device again to fix the bridge housing, and continue processing the other side of the bridge package.

[0013] Compared with the prior art, this application has the following advantages: 1. The present invention uses two sets of cutting tools to process the bridge housing at the same time, so that multiple processes can be completed in one clamping, which simplifies the production process and reduces the processing accuracy error caused by multiple clamping. In the process of processing the bridge package, the clamping assembly is used to further fix the bridge package to avoid deviation during the processing and ensure the processing accuracy of the bridge package.

[0014] 2. The present invention provides a tool assembly in which the tool bar is made of a material with relatively high rigidity, so that the tool bar has excellent rigidity and impact resistance, thereby effectively avoiding vibration of the tool during processing.

[0015] 3. The present invention arranges the processing procedures reasonably, first performs rough processing to remove most of the excess, then performs semi-finishing and finishing, and in the finishing stage, uses turning instead of grinding to improve the surface finish of the bridge housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the bridge housing structure of the present invention; Figure 3 It is a schematic diagram of the structure of the tool assembly of the present invention; Figure 4 It is a schematic diagram of the structure of the clamp assembly of the present invention.

[0017] In the figure: 1. bridge housing; 101. bridge package; 102. journal; 103. connecting plate; 104. shaft tube; 2. base; 3. slide; 4. fixture assembly; 401. sliding block; 402. moving block; 403. limit rod; 5. tool assembly; 51. tool rod; 52. tool; 53. rod face groove; 54. tool pressing groove; 6. clamping device; 7. four-axis turntable; 8. three-jaw chuck; 9. ejector pin. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1: like Figure 1-Figure 3 As shown, this embodiment discloses a method for processing a drive axle housing, which is based on a processing device, wherein the processing device includes a base 2, which can provide stable support for the processing device, a slide 3 is arranged above the base 2, a fixture assembly 4 is slidably connected to the slide 3, the fixture assembly 4 can move horizontally on the slide 3, a tool assembly 5 is connected inside the fixture assembly 4, the tool assembly 5 includes a tool rod 51 and a tool 52 with enhanced rigidity, the tool 52 is arranged inside the tool rod 51, and two groups of the tool assembly 5 are arranged. Since the side connecting plate 103 of the axle housing 1 is located at the position of the shaft neck 102 on both sides, the protruding part is relatively long, which will cause the tool 52 to extend longer. At this time, the tool 52 has poor rigidity and is prone to vibration. The tool rod 51 is made of a material with greater rigidity, so that the tool rod 51 has good rigidity and impact resistance, thereby effectively avoiding the vibration of the tool 52 during processing.

[0020] like Figure 4As shown, the fixture assembly 4 includes a sliding block 401, on which a moving block 402 is slidably connected, and the side wall of the moving block 402 is rotatably connected to a limiting rod 403. When the tool assembly 5 needs to be close to or away from the bridge housing 1, the limiting rod 403 is controlled to rotate and move away from the moving block 402. At this time, the limiting rod 403 no longer locks the sliding block 401, prompting the moving block 402 to move to the target position, and then the limiting rod 403 is rotated to approach and cling to the moving block 402 to achieve the function of locking the moving block 402. At this time, the moving block 402 synchronously drives the two sets of tools 52 to move to the target position. Figure 1 As shown, one side of the base 2 is fixedly connected to the four-axis turntable 7, the outer side of the four-axis turntable 7 is connected to the three-jaw chuck 8, and the other side of the base 2 is fixedly connected to the ejector 9. When in use, one end of the bridge housing 1 is clamped by the three-jaw chuck 8, and the other end is tightened and locked with the ejector 9, so that the bridge housing 1 is coaxially arranged to ensure the coaxiality of the two ends of the bridge housing 1. Then, the four-axis turntable 7 is controlled to rotate at a set speed, and the outer circle of the shaft tube 104 on both sides is milled in three steps of rough machining, semi-finishing and finishing. After the outer circle machining of the shaft tube 104 is completed, the positions of the two sets of tools 52 are readjusted, and the outer circle of the journal 102 is machined by turning instead of grinding to ensure that the outer circle finish of the journal 102 meets the requirements.

[0021] Specifically, two sets of clamping devices 6 are provided on the base 2. When the bridge package 101 is processed, since the bridge package 101 is an eccentric component, the bridge package 101 is prone to rotation during the processing, which leads to processing errors. Therefore, the clamping devices 6 are arranged on the shaft tubes 104 on both sides of the bridge housing 1 to fix the bridge housing 1, thereby further fixing the bridge package 101, avoiding displacement during the processing, and ensuring the processing accuracy of the bridge package 101. When in use, the two sets of clamping devices 6 fix the bridge housing 1, and process one side of the bridge package 101 in two steps of rough milling and fine milling. Then, the clamping devices 6 are released to release the fixation of the bridge housing 1, and the four-axis turntable 7 is used to control the flipping of the bridge housing 1. The clamping devices 6 are used to fix the bridge housing 1 again, and the other side of the bridge package 101 is processed. It should be noted that the present embodiment uses a CNC boring and milling head to process the bridge package 101, which is a commonly used technical means for those skilled in the art and is not shown in the accompanying drawings.

[0022] More specifically, the bridge housing 1 includes a bridge package 101, and the bridge package 101 symmetrically extends a journal 102 to both sides, and a connecting plate 103 is provided outside the journal 102, and the connecting plate 103 is externally connected to an axle tube 104. It should be noted that the bridge package 101, the journal 102, the connecting plate 103 and the axle tube 104 are cast into a whole, and have good integrity and uniformity.

[0023] More specifically, the upper end face and the lower end face of one end of the tool rod 51 connected to the clamp assembly 4 are both provided with a rod face groove 53, and the other end of the tool rod 51 is provided with a tool pressing groove 54. The clamp assembly 4 clamps the tool rod 51 through the rod face groove 53 of the tool rod 51, and the tool 52 is arranged inside the tool pressing groove 54 of the tool rod 51 and is fastened by a fastening bolt.

[0024] Embodiment 2: A method for processing a drive axle housing, the method comprising the following processing steps: S1: Use a three-jaw chuck 8 to clamp one end of the axle housing 1, and use a thimble 9 to push and lock the other end, so that the axle housing 1 is coaxially arranged; S2: Control the two sets of tool assemblies 5 to move synchronously, and use three steps of rough machining, semi-finishing machining and finishing machining to turn and mill the outer circle of the shaft tube 104 on both sides; S3: machining the outer circle of the journal 102 by turning instead of grinding to ensure that the outer circle finish of the journal 102 meets the requirements; S4: two sets of clamping devices 6 are used to fix the bridge housing 1, and one side of the bridge package 101 is processed in two steps of rough milling and fine milling; The clamping device 6 is released to release the fixation of the bridge housing 1 , and the bridge housing 1 is turned over by using the four-axis turntable 7 . The clamping device 6 is used again to fix the bridge housing 1 , and the other side of the bridge package 101 is continued to be processed.

[0025] In the above process, two sets of tool assemblies 5 are used for simultaneous processing, thereby avoiding the processing accuracy error caused by multiple clamping of the bridge housing 1 during the processing, and further fixing the bridge housing 101 by using the clamping assembly during the processing of the bridge housing 101, thereby avoiding the occurrence of displacement during the processing, and ensuring the processing accuracy of the bridge housing 101. At the same time, by reasonably arranging the processing procedures, rough processing is first performed to remove most of the excess, and then semi-finishing and finishing are performed, and in the finishing stage, the method of turning instead of grinding is adopted to improve the surface finish of the bridge housing 1.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for processing a drive axle housing, the method being performed based on a processing device, and characterized in that: The processing device comprises a base (2), a slide table (3) is provided on the base (2), a fixture assembly (4) is slidably connected to the slide table (3), and a tool assembly (5) is internally connected to the fixture assembly (4); The base (2) is provided with two sets of clamping devices (6), the clamping devices (6) are used to fix the bridge housing (1), one side of the base (2) is fixedly connected to a four-axis turntable (7), the outer side of the four-axis turntable (7) is connected to a three-jaw chuck (8), and the other side of the base (2) is fixedly connected to a ejector pin (9); The bridge housing (1) comprises a bridge package (101), the bridge package (101) symmetrically extending shaft necks (102) on both sides, a connecting plate (103) is provided outside the shaft neck (102), the connecting plate (103) is externally connected to a shaft tube (104), and the bridge package (101), the shaft neck (102), the connecting plate (103) and the shaft tube (104) are cast as one body.

2. A drive axle housing processing method according to claim 1, characterized in that: The tool assembly (5) comprises a tool rod (51), one end of the tool rod (51) is provided with a tool pressing groove (54), a tool (52) is connected inside the tool pressing groove (54), and the tool (52) is fixedly connected to the tool rod (51) via a bolt.

3. A method for processing a drive axle housing according to claim 1, characterized in that: The clamp assembly (4) comprises a sliding block (401), a moving block (402) being slidably connected to the sliding block (401), and a side wall of the moving block (402) being rotatably connected to a limiting rod (403).

4. A method for processing a drive axle housing according to claim 1, characterized in that: The clamping device (6) is arranged on the axle tubes (104) on both sides of the axle housing (1).

5. A method for processing a drive axle housing according to claim 2, characterized in that: The upper end surface and the lower end surface of the knife rod (51) at one end close to the clamp assembly (4) are both provided with a rod surface groove (53), and the rod surface groove (53) is fixedly connected to the clamp assembly (4).

6. A method for processing a drive axle housing according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: Use a three-jaw chuck (8) to clamp one end of the bridge housing (1), and use a thimble (9) to push and lock the other end, so that the bridge housing (1) is coaxially arranged; S2: Controlling the two sets of tool assemblies (5) to move synchronously, and turning and milling the outer circles of the shaft tubes (104) on both sides in three steps of rough machining, semi-finishing and finishing; S3: The outer circle of the journal (102) is machined by turning instead of grinding to ensure that the surface finish of the outer circle of the journal (102) meets the requirements; S4: two sets of clamping devices (6) are used to fix the bridge housing (1), and one side of the bridge package (101) is processed in two steps of rough milling and fine milling; The clamping device (6) is released to release the fixation of the bridge housing (1), the bridge housing (1) is turned over by controlling the four-axis turntable (7), the clamping device (6) is used again to fix the bridge housing (1), and the other side of the bridge package (101) is processed continuously.

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