Method, system and jig for machining a transverse drive axle housing

Abstract

The application belongs to the field of machining of steering drive axle housing, and discloses a machining method, a machining system and a machining clamp for steering drive axle housing. The machining method comprises the following steps: clamping and positioning the steering drive axle housing by a first clamp arranged on a rotatable workbench of a horizontal boring and milling machine, so that the central axis of the reinforcing ring of the steering drive axle housing is parallel to the horizontal plane; rotating the rotatable workbench horizontally, so that the horizontal boring and milling machine processes the front side and the rear side of the steering drive axle housing respectively; clamping and positioning the steering drive axle housing by a second clamp arranged on the rotatable workbench, so that the central axis of the reinforcing ring is perpendicular to the horizontal plane; and processing the two fist ends of the steering drive axle housing by the horizontal boring and milling machine. By using the application, the number of times of re-clamping and positioning in the machining process can be reduced, the types and the number of required machining equipment can be reduced, thereby saving the process and the working hours, and improving the working efficiency.

Description

Technical Field

[0001] This invention relates to the field of steering drive axle housing machining technology, specifically to a machining method, machining system, and machining fixture for steering drive axle housings. Background Technology

[0002] In existing machining methods, the machining of the front and rear reinforcing rings of the steering drive axle housing requires two separate processes, each using different fixtures for clamping and positioning. Typically, a vertical machining center is used for machining the front and rear reinforcing rings. After machining the front and rear reinforcing rings, the machining equipment needs to be switched to a horizontal CNC boring and milling machine for machining the two fist-shaped ends. This process requires multiple clamping and positioning operations on the steering drive axle housing, consuming significant time. Furthermore, different machining equipment is required to complete the machining of the front and rear reinforcing rings and the two fist-shaped ends. This not only results in numerous machining steps and low efficiency, but also leads to mismatched cycle times between processes and significant equipment differences, further contributing to the long machining time and low efficiency. Summary of the Invention

[0003] In view of at least one of the above-mentioned defects or deficiencies in the prior art, the present invention provides a machining method, machining system and machining fixture for a steering drive axle housing, which can reduce the number of times the machining process requires re-clamping and positioning, reduce the types and quantities of machining equipment required, thereby saving processes and time and improving work efficiency.

[0004] To achieve the above objectives, a first aspect of the present invention provides a method for machining a steering drive axle housing, comprising:

[0005] The steering drive axle housing is clamped and positioned by a first fixture set on a rotatable worktable of a horizontal boring and milling machine so that the central axis of the reinforcing ring of the steering drive axle housing is parallel to the horizontal plane.

[0006] The horizontal rotation of the rotatable worktable allows the horizontal boring and milling machine to machine the front and rear sides of the steering drive axle housing, respectively.

[0007] The steering drive axle housing is re-clamped and positioned by a second clamp set on the rotatable worktable so that the central axis of the reinforcing ring is perpendicular to the horizontal plane.

[0008] The two fist-shaped ends of the steering drive axle housing are machined using the horizontal boring and milling machine.

[0009] Optionally, the front side of the steering drive axle housing is connected to two universal positioning blocks located on the radial sides of the front reinforcing ring, respectively.

[0010] The horizontal rotation of the rotatable worktable allows the horizontal boring and milling machine to machine the front and rear sides of the steering drive axle housing, respectively, including:

[0011] Two of the general positioning blocks are machined separately to produce positioning reference surfaces and positioning reference holes on both general positioning blocks;

[0012] The steering drive axle housing is repositioned by a second clamp set on the rotatable worktable so that the central axis of the reinforcing ring is perpendicular to the horizontal plane, including:

[0013] The positioning reference surface and the positioning reference hole on the two universal positioning blocks are used as the clamping positioning reference for the second fixture.

[0014] Optionally, the processing method further includes:

[0015] Before machining the steering drive axle housing using the horizontal boring and milling machine, two universal positioning blocks are welded onto the front side of the housing.

[0016] A second aspect of the present invention provides a machining system for a steering drive axle housing, comprising:

[0017] A horizontal boring and milling machine, including a rotatable worktable capable of horizontal rotation;

[0018] A first clamp, disposed on the rotatable worktable, is used to clamp and position the steering drive axle housing such that the central axis of the reinforcing ring is parallel to the horizontal plane; and

[0019] The second clamp is disposed on the rotatable worktable and is used to clamp and position the steering drive axle housing such that the central axis of the reinforcing ring is perpendicular to the horizontal plane.

[0020] By sequentially clamping and positioning the steering drive axle housing with the first and second fixtures and coordinating with the horizontal rotation of the rotatable worktable, the horizontal boring and milling machine can sequentially process the front side, rear side, and two fist-shaped ends of the steering drive axle housing.

[0021] A third aspect of the present invention provides a machining fixture for a steering drive axle housing, comprising:

[0022] Fixture base;

[0023] A reinforcing ring support assembly is provided on the clamp base for supporting the reinforcing ring of the steering drive axle housing such that the central axis of the reinforcing ring is parallel to the horizontal plane;

[0024] A housing clamping assembly, disposed on the clamp base, is used to clamp the housing of the steering drive axle housing; and

[0025] The fist-end positioning assembly is mounted on the clamp base and includes a half-shaft hole positioning mechanism for positioning the half-shaft hole of the steering drive axle housing and a main pin hole positioning mechanism for positioning the main pin hole of the steering drive axle housing.

[0026] Optionally, the axle hole positioning mechanism includes a axle hole positioning base and a axle hole positioning connecting member that passes through the axle hole positioning base in the horizontal direction and has one end that can pass through the axle hole. The master pin hole positioning mechanism includes a master pin hole positioning base and a master pin hole positioning connecting member that can pass through the peripheral wall of the axle hole positioning connecting member from top to bottom and enter the master pin hole positioning base downward.

[0027] Optionally, for the two kingpin hole positioning bases respectively provided on the two fist ends of the steering drive axle housing in the fist end positioning assembly, one of them is formed with a base positioning hole and the other is formed with a base limiting groove, and the base limiting groove extends in a direction parallel to the half shaft hole positioning connecting member.

[0028] Optionally, the fist end positioning assembly includes a fist end locking bolt that forms a threaded engagement with the half-shaft hole positioning base and is capable of pressing the fist end in a direction parallel to the half-shaft hole positioning connecting member.

[0029] Optionally, the fist-end positioning assembly includes a connecting bolt that forms a threaded engagement with the half-shaft hole positioning base and is capable of radially pressing against the peripheral wall of the half-shaft hole positioning connecting member.

[0030] Optionally, the half-shaft hole positioning connector is formed as a hollow insertion sleeve.

[0031] Optionally, the housing clamping assembly includes:

[0032] A liftable support base is used to support the housing and can drive the housing to rise and fall.

[0033] The front and rear clamping mechanism includes two housing side clamping bases respectively disposed on the front and rear sides of the liftable support base, and two housing side clamping bolt groups respectively threaded into the two housing side clamping bases and capable of jointly clamping the housing in the front-rear direction; and

[0034] The top clamping mechanism includes a top clamping plate that can be opened and closed to cover the top opening between the two housing side clamping bases.

[0035] Optionally, the reinforcing ring support assembly includes:

[0036] Reinforced ring support; and

[0037] Multiple arc-edge support mechanisms are vertically and vertically mounted on the reinforcing ring support base and are used to jointly support the outer peripheral wall of the reinforcing ring.

[0038] Optionally, the reinforcing ring support assembly, the housing clamping assembly, and the fist end positioning assembly are respectively connected to the clamp base in a sliding fit along the length direction of the steering drive axle housing.

[0039] The steering drive axle housing is machined using the machining method of the present invention. First, the steering drive axle housing is clamped and positioned using a first fixture. Then, the front and rear sides of the steering drive axle housing are machined using a horizontal boring and milling machine, achieving machining of both sides in a single clamping and positioning operation. Next, the steering drive axle housing is re-clamped and positioned using a second fixture, and the two fist-shaped ends of the steering drive axle housing are machined using a horizontal boring and milling machine. Furthermore, the machining system and machining fixture provided by the present invention are applicable to the aforementioned machining method for steering drive axle housings. The machining fixture for steering drive axle housings can serve as the first fixture in the machining method, and the machining system for steering drive axle housings serves as the machining system used to execute the machining method.

[0040] Compared to existing technologies, by using the machining method for steering drive axle housings of this invention, the machining of various features on the front and rear sides of the steering drive axle housing can be completed in a single clamping and positioning operation. This reduces the number of re-clamping and positioning operations, saves process steps, eliminates machining errors caused by secondary clamping and positioning, and improves product machining efficiency and quality. At the same time, the entire machining process can be completed on the same specification machining equipment. Through the rapid switching of fixtures, a single machine can complete the machining, reducing the types and number of machining equipment, making the cycle time between processes match, improving product machining efficiency, and facilitating the realization of production automation.

[0041] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0042] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0043] Figure 1 A flowchart illustrating a specific embodiment of the present invention for processing a steering drive axle housing;

[0044] Figure 2This is a schematic diagram of a machining fixture for clamping and positioning a steering drive axle housing according to a specific embodiment of the present invention.

[0045] Figure 3 for Figure 2 A front view of the steering drive axle housing;

[0046] Figure 4 for Figure 2 Top view of the steering drive axle housing;

[0047] Figure 5 for Figure 2 A schematic diagram of the housing clamping assembly of the machining fixture;

[0048] Figure 6 for Figure 2 A cross-sectional view of the half-shaft hole positioning and connecting piece in the machining fixture.

[0049] Explanation of reference numerals in the attached figures:

[0050] 1. Steering drive axle housing

[0051] 11 Front reinforcement ring 12 Rear reinforcement ring

[0052] 13 Fist end 14 Shell

[0053] 15 Universal Positioning Blocks

[0054] 131 Half-shaft hole; 132 Kingpin hole

[0055] 2. Machining fixtures

[0056] 21 Fixture base 22 Reinforcing ring support assembly

[0057] 23 Housing clamping assembly 24 Fist end positioning assembly

[0058] 221 Reinforcing ring support seat; 222 Arc edge support mechanism

[0059] 231 Liftable support base; 232 Front and rear clamping mechanism

[0060] 233 Top clamping mechanism 241 Half-shaft hole positioning mechanism

[0061] 242 Kingpin Hole Positioning Mechanism 243 Fist-End Locking Bolt

[0062] 244 Through-connector locking bolt

[0063] 232a Shell side pressure base 232b Shell side pressure bolt assembly

[0064] 233a Top pressure plate 241a Half shaft hole positioning base

[0065] 241b Half-shaft hole positioning connector; 242a Main pin hole positioning base

[0066] 242b Main pin hole positioning connecting piece Detailed Implementation

[0067] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0068] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0069] In the embodiments of the present invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of the components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0070] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0071] Before providing a detailed description of the specific implementation methods of the embodiments of the present invention, the steering drive axle housing 1 mentioned in the present invention will be explained in detail, such as... Figure 3 and Figure 4 As shown, the steering axle housing 1 includes a housing 14, a front reinforcing ring 11, a rear reinforcing ring 12, and two fist-shaped ends 13. Each fist-shaped end 13 has a half-shaft hole 131 and a kingpin hole 132. The central axis of the half-shaft hole 131 is perpendicular to the central axis of the reinforcing ring, and the central axis of the kingpin hole 132 is perpendicular to the central axis of the reinforcing ring.

[0072] The front-rear direction mentioned in this invention refers to the direction in which the steering drive axle housing 1 is installed on the vehicle. The front side of the steering drive axle housing 1 is the side facing the front of the vehicle when the steering drive axle housing 1 is installed on the vehicle. The front reinforcing ring 11 is located on the front side of the steering drive axle housing 1. The rear side of the steering drive axle housing 1 is the side facing the rear of the vehicle when the steering drive axle housing 1 is installed on the vehicle. The rear reinforcing ring 12 is located on the rear side of the steering drive axle housing 1.

[0073] like Figure 1 As shown, a first exemplary embodiment of the present invention provides a method for machining a steering drive axle housing, comprising:

[0074] Step S1: The steering drive axle housing 1 is clamped and positioned by the first fixture set on the rotatable worktable of the horizontal boring and milling machine so that the central axis of the reinforcing ring of the steering drive axle housing 1 is parallel to the horizontal plane.

[0075] Step S2: The horizontal boring and milling machine is used to machine the front and rear sides of the steering drive axle housing 1 by rotating the rotatable worktable horizontally.

[0076] Step S3: Re-clamp and position the steering drive axle housing 1 using the second clamp set on the rotatable worktable so that the central axis of the reinforcing ring is perpendicular to the horizontal plane;

[0077] Step S4: The two fist-shaped ends 13 of the steering drive axle housing 1 are machined using a horizontal boring and milling machine.

[0078] Specifically, when machining the steering drive axle housing 1 using the machining method of this embodiment, steps S1 to S4 are performed to complete the machining of the steering drive axle housing 1. First, the steering drive axle housing 1 is clamped and positioned using the first fixture, and the steering drive axle housing 1 is positioned as follows: Figure 3 The steering drive axle housing 1 is positioned and clamped in the first fixture, ensuring that the central axis of the reinforcing ring is parallel to the horizontal plane. The front side of the steering drive axle housing 1 is machined using a horizontal boring and milling machine. After machining the front side, the rear side of the steering drive axle housing 1 is machined by rotating the rotatable worktable horizontally. This allows for machining of both the front and rear sides of the steering drive axle housing 1 in a single clamping and positioning operation. The steering drive axle housing 1 is then repositioned and clamped using the second fixture, and the two fist-shaped ends 13 of the steering drive axle housing 1 are machined using a horizontal boring and milling machine.

[0079] In existing machining methods, machining the steering drive axle housing 1 requires first clamping and positioning the steering drive axle housing 1 using a fixture, such as... Figure 4 The steering drive axle housing 1 is positioned as shown in the diagram and clamped in place. A vertical machining center is used to machine the front side of the housing. After machining the front side, the steering drive axle housing 1 is flipped horizontally and clamped in place using another fixture. The steering drive axle housing 1 remains in the position shown in the diagram. Figure 4 The arrangement shown is clamped and positioned by a fixture, and then the rear side is machined using a vertical machining center. Since the central axis of the half shaft hole 131 and the central axis of the main pin hole 132 on the two fist ends 13 are relatively perpendicular to the central axis of the reinforcing ring, after the machining of the rear side is completed, the machining equipment needs to be switched to a horizontal boring and milling machine to machine the two fist ends 13. During the process, the machining of the front and rear sides of the steering drive axle housing 1 needs to be completed in two separate processes and by switching different fixtures. This not only results in low work efficiency, but also introduces positioning errors due to secondary clamping. The machining of the fist ends 13 requires switching machining equipment. Different machining equipment have large differences, and the cycle time between processes is mismatched, resulting in low work efficiency.

[0080] By employing the machining method for the steering drive axle housing 1 of the present invention, the steering drive axle housing 1 is machined. The machining of various features on the front and rear sides of the steering drive axle housing 1 is completed in one clamping and positioning, reducing the number of re-clamping and positioning operations, saving processes, eliminating machining errors caused by secondary clamping and positioning, and improving product machining efficiency and quality. At the same time, the entire machining process is based on a horizontal boring and milling machine as the machining equipment. Through the rapid switching of fixtures, a single machine can complete the machining, reducing the types and number of machining equipment, making the cycle time between processes match, improving product machining efficiency, and facilitating the realization of production automation.

[0081] In one embodiment, such as Figure 3 As shown, two universal positioning blocks 15 are connected to the front side of the housing 14 of the steering drive axle housing 1, which are located on the radial sides of the front reinforcing ring 11 respectively.

[0082] Step S2 includes:

[0083] Two universal positioning blocks 15 are machined respectively to machine positioning reference surfaces and positioning reference holes on both universal positioning blocks 15;

[0084] Specifically, during step S2, when the front side of the steering drive axle housing 1 is machined on the horizontal boring and milling machine, two universal positioning blocks 15 are connected to the front side of the housing 14. Thus, while machining the features of the front reinforcing ring 11, the two universal positioning blocks 15 are machined simultaneously to machine positioning reference surfaces and positioning reference holes on both universal positioning blocks 15. Then the rear side is machined.

[0085] Step S3 includes:

[0086] The positioning reference surfaces and positioning reference holes on the two universal positioning blocks 15 are used as the clamping positioning references for the second fixture.

[0087] Specifically, after machining the front and rear sides of the steering drive axle housing 1, the second fixture needs to be switched to re-clamp and position the steering drive axle housing 1 for machining the two fist-shaped ends 13. The clamping and positioning of the steering drive axle housing 1 by the second fixture uses the positioning reference surfaces and positioning reference holes on the two universal positioning blocks 15 as the clamping and positioning references. The two universal positioning blocks 15 are set on the housing 14. The positioning reference surfaces and positioning reference holes on the two universal positioning blocks 15 are machined by a horizontal boring and milling machine in the previous process. In this embodiment, the machining equipment used is a horizontal boring and milling machine of the same specification. The two universal positioning blocks 15 are set in a position that will not be affected by changes in the type of steering drive axle housing 1, so that the formed positioning reference will not be affected by changes in the type of steering drive axle housing 1. When the type of steering drive axle housing 1 to be machined changes, it is not necessary to replace the second fixture, thereby achieving flexible positioning.

[0088] In one embodiment, the processing method further includes:

[0089] Before machining the steering drive axle housing 1 using a horizontal boring and milling machine, two universal positioning blocks 15 are welded onto the front side of the housing 14.

[0090] Specifically, before performing step S1, two universal positioning blocks 15 must first be welded to the front side of the housing 14 of the steering drive axle housing 1. The resulting structure of the steering drive axle housing 1 can be as follows: Figure 3 As shown, this allows the steering drive axle housing 1, which is supplied from the previous process, to have two universal positioning blocks 15. This enables the positioning reference surface and positioning reference hole to be machined on both universal positioning blocks 15 during the execution of step S1, providing a positioning reference for the second fixture when executing step S3, thus achieving flexible positioning.

[0091] A second exemplary embodiment of the present invention provides a machining system for a steering drive axle housing, comprising:

[0092] A horizontal boring and milling machine, including a rotatable worktable capable of horizontal rotation;

[0093] A first clamp, mounted on a rotatable worktable, is used to clamp and position the steering drive axle housing 1 such that the central axis of the reinforcing ring is parallel to the horizontal plane; and

[0094] The second fixture is set on the rotatable worktable and is used to clamp and position the steering drive axle housing 1 so that the central axis of the reinforcing ring is perpendicular to the horizontal plane.

[0095] By clamping and positioning the steering drive axle housing 1 with the first and second fixtures in sequence, and cooperating with the horizontal rotation of the rotatable worktable, the horizontal boring and milling machine can sequentially process the front side, rear side and two fist-shaped ends 13 of the steering drive axle housing 1.

[0096] The machining system for the steering drive axle housing in this embodiment is applicable to the aforementioned machining method for the steering drive axle housing. When machining the steering drive axle housing 1 using the aforementioned machining method, the machining system for the steering drive axle housing in this embodiment can be used. Specifically, when machining the steering drive axle housing 1, the steering drive axle housing 1 is clamped and positioned using a first fixture, ensuring that the central axis of the reinforcing ring is parallel to the horizontal plane. In conjunction with the horizontal rotation of the rotatable worktable, a horizontal boring and milling machine is used to sequentially machine the front and rear sides of the steering drive axle housing 1. Then, the steering drive axle housing 1 is re-clamped and positioned using a second fixture, ensuring that the central axis of the reinforcing ring is perpendicular to the horizontal plane. Similarly, a horizontal boring and milling machine is used to machine the two fist-shaped ends 13. Throughout the machining process, the same horizontal boring and milling machine can be used to complete all processes, thereby reducing the number and types of machining equipment required in the production line, ensuring cycle time matching between processes, improving work efficiency, and facilitating production automation. At the same time, the front and rear sides of the steering drive axle housing 1 can be machined in one clamping and positioning. During the process, there is no need to switch fixtures and re-clamp and position, which reduces the number of re-clamping and positioning, thereby reducing the error caused by secondary clamping, saving processes and improving efficiency.

[0097] like Figure 2 As shown, a third exemplary embodiment of the present invention provides a machining fixture for a steering drive axle housing. The machining fixture 2 for the steering drive axle housing includes: a fixture base 21, a reinforcing ring support assembly 22, a housing clamping assembly 23, and a fist end positioning assembly 24.

[0098] Specifically, the reinforcing ring support assembly 22, the housing clamping assembly 23, and the fist-end positioning assembly 24 are all mounted on the fixture base 21. The reinforcing ring support assembly 22 is used to support the reinforcing ring of the steering drive axle housing 1 so that the central axis of the reinforcing ring is parallel to the horizontal plane. The housing clamping assembly 23 is used to clamp the housing 14 of the steering drive axle housing 1. The fist-end positioning assembly 24 includes a half-shaft hole positioning mechanism 241 for positioning the half-shaft hole 131 of the steering drive axle housing 1 and a main pin hole positioning mechanism 242 for positioning the main pin hole 132 of the steering drive axle housing 1.

[0099] When machining the steering drive axle housing 1, the steering drive axle housing 1 is clamped and positioned to machine the front reinforcing ring 11 and the rear reinforcing ring 12. The steering drive axle housing 1 is then positioned as follows: Figure 2The steering drive axle housing 1 is placed in the machining fixture 2 in the shown position. The housing 14 is pressed by the housing clamping assembly 23, and the reinforcing ring support assembly 22 supports the reinforcing ring so that the central axis of the reinforcing ring is parallel to the horizontal plane. The half shaft hole positioning mechanism 241 positions the half shaft hole 131, and the kingpin hole positioning mechanism 242 positions the kingpin hole 132. The steering drive axle housing 1 is positioned in the horizontal and vertical directions so that the steering drive axle housing 1 is clamped and positioned on the machining fixture 2, which facilitates the subsequent machining of the front reinforcing ring 11 and the rear reinforcing ring 12 on the steering drive axle housing 1.

[0100] By setting the above structure for clamping and positioning the steering drive axle housing 1, the steering drive axle housing 1 can be clamped and positioned on the machining fixture 2 with the central axis of the reinforcing ring parallel to the horizontal plane. When machining the features on the front reinforcing ring 11 and the rear reinforcing ring 12, a horizontal boring and milling machine can be used. Compared to the existing fixture clamping and positioning of the steering drive axle housing 1, after machining the features of the front reinforcing ring 11, the steering drive axle housing 1 needs to be horizontally flipped and the fixture needs to be changed before machining the features of the rear reinforcing ring 12. Furthermore, the existing fixtures are positioned based on the shape of the steering drive axle housing 1 to correct the center of the reinforcing ring, resulting in low work efficiency. The deformation of the steering drive axle housing 1 has a significant impact on machining, and uneven or even insufficient machining allowances are easily encountered during machining. By using the machining fixture 2 of this embodiment to clamp and position the steering drive axle housing 1, the machining of the various features on the front reinforcing ring 11 and the rear reinforcing ring 12 can be completed without changing the fixture or re-clamping and positioning the steering drive axle housing 1. This simplifies the machining process of the front reinforcing ring 11 and the rear reinforcing ring 12, reduces the number of times the fixture needs to be re-clamped and positioned, and improves work efficiency.

[0101] The machining fixture 2 for the steering drive axle housing 1 provided in this embodiment can serve as the first fixture in the aforementioned machining method for the steering drive axle housing 1, and is applicable to the aforementioned machining method for the steering drive axle housing 1. For example, in step S1 of the aforementioned machining method for the steering drive axle housing 1, the machining fixture 2 for the steering drive axle housing 1 of this embodiment can be used to clamp and position the steering drive axle housing 1 so that the central axis of the reinforcing ring of the steering drive axle housing 1 is parallel to the horizontal plane, so that when performing step S2, it is not necessary to re-clamp and position the steering drive axle housing 1 during the machining of the front and rear sides of the steering drive axle housing 1. Of course, the machining fixture 2 for the steering drive axle housing 1 provided in this embodiment can also serve as the first fixture in the aforementioned machining system for the steering drive axle housing 1.

[0102] In one embodiment, the axle hole positioning mechanism 241 includes axle hole positioning base 241a and axle hole positioning connecting piece 241b that passes through the axle hole positioning base 241a in a horizontal direction and has one end that can pass through the axle hole 131. The master pin hole positioning mechanism 242 includes a master pin hole positioning base 242a and a master pin hole positioning connecting piece 242b that can pass through the peripheral wall of the axle hole positioning connecting piece 241b from top to bottom and then pass downward into the master pin hole positioning base 242a.

[0103] Specifically, by having the axle hole positioning connector 241b pass horizontally through the axle hole positioning base 241a, with one end of the connector 241b connected to the axle hole 131, the horizontal centerline of the steering drive axle housing 1 can be positioned, providing some support for the steering drive axle housing 1 and achieving initial horizontal positioning of the steering drive axle housing 1. The kingpin hole positioning connector 242b is inserted downwards into the kingpin hole positioning base 242a, achieving initial vertical positioning of the steering drive axle housing 1. The diameters of the two ends of the kingpin hole positioning connector 242b that contact the kingpin hole 132 are set slightly smaller than the diameter of the kingpin hole 132 to compensate for deformation of the steering drive axle housing 1. For example, the deformation of the steering drive axle housing 1 can be torsional deformation caused by welding, or a change in the length of the steering drive axle housing 1 caused during welding, or other deformations.

[0104] A half-shaft hole positioning connector 241b penetrates horizontally through a half-shaft hole positioning base 241a, with one end connected to the half-shaft hole 131, to position the horizontal centerline of the steering drive axle housing 1. Then, a kingpin hole positioning connector 242b penetrates downwards through the peripheral wall of the half-shaft hole positioning connector 241b and into the kingpin hole positioning base 242a, thus achieving the positioning of the steering drive axle housing 1 in both the horizontal and vertical directions. Through the cooperation of the half-shaft hole positioning mechanism 241 and the kingpin hole positioning mechanism 242, the positioning of the steering drive axle housing 1 in both the horizontal and vertical directions is completed, ensuring the positioning of the steering drive axle housing 1 in both directions and providing initial locking to prevent displacement of the steering drive axle housing 1 in the horizontal and vertical directions, which could affect the machining quality.

[0105] In one embodiment, for the two kingpin hole positioning bases 242a respectively provided for the two fist ends 13 of the steering drive axle housing 1 in the fist end positioning assembly 24, one of them is formed with a base positioning hole and the other is formed with a base limiting groove. The base limiting groove extends in a direction parallel to the half shaft hole positioning connecting member 241b.

[0106] Specifically, the formed base positioning hole is matched with the main pin hole positioning connector 242b. The main pin hole positioning connector 242b passes into the main pin hole positioning base 242a with the base positioning hole, which can position the horizontal position of the steering drive axle housing 1, thus achieving horizontal positioning of the steering drive axle housing 1. The formed base limiting groove is matched with the main pin hole positioning connector 242b and extends in a direction parallel to the half-shaft hole positioning connector 241b, used to compensate for the deformation of the steering drive axle housing 1. For example, the deformation of the steering drive axle housing 1 can be a change in the length of the steering drive axle housing 1 caused by welding the steering drive axle housing 1. The main pin hole positioning connector 242b passes into the main pin hole positioning base 242a with the base limiting groove, which can position the vertical axis of the steering drive axle housing 1.

[0107] The machining fixture 2 provided in this embodiment uses the kingpin hole 132 and the half-shaft hole 131 of the steering drive axle housing 1 as positioning references to accurately position the horizontal axis of the steering drive axle housing 1 and the horizontal position of the reinforcing ring, and compensates for the positioning of the vertical axis of the steering drive axle housing 1, so that the machining allowance is uniform. The machining features and positioning references conform to the principle of mutual reference, which reduces the occurrence of uneven or insufficient machining allowances caused by the deformation of the steering drive axle housing 1, and improves the machining quality.

[0108] In one embodiment, the fist-end positioning assembly 24 includes a fist-end locking bolt 243 that forms a threaded engagement with the half-shaft hole positioning base 241a and can press against the fist end 13 in a direction parallel to the half-shaft hole positioning connecting member 241b. After the positioning of the steering drive axle housing 1 in the horizontal and vertical directions is completed by the cooperation of the half-shaft hole positioning mechanism 241 and the kingpin hole positioning mechanism 242, and the steering drive axle housing 1 is initially locked, the horizontal locking of the steering drive axle housing 1 is achieved by tightening the fist-end locking bolt 243.

[0109] In one embodiment, the fist-end positioning assembly 24 includes a connecting bolt 244 that forms a threaded engagement with the half-shaft hole positioning base 241a and is capable of radially pressing against the peripheral wall of the half-shaft hole positioning connecting member 241b. After the connecting members are connected and positioned in their respective positions, and the steering drive axle housing 1 is positioned in the horizontal and vertical directions, the connecting bolt 244 is tightened to press against and lock the half-shaft hole positioning connecting member 241b, thereby completing the positioning of the steering drive axle housing 1.

[0110] In one embodiment, such as Figure 6 As shown, the half-shaft hole positioning connector 241b is formed as a hollow insertion sleeve. This design can reduce the weight of the half-shaft hole positioning connector 241b. At the same time, the half-shaft hole positioning connector 241b has an opening through which the main pin hole positioning connector 242b can pass from top to bottom to achieve positioning of the main pin hole 132.

[0111] In one embodiment, such as Figure 5 As shown, the housing clamping assembly 23 includes:

[0112] The liftable support base 231 is used to support the housing 14 and can drive the housing 14 to rise and fall. The initial height position of the liftable support base 231 can be adjusted by rotating the rotatable support member on the liftable support base 231.

[0113] The front and rear clamping mechanism 232 includes two housing side clamping bases 232a respectively disposed on the front and rear sides of the liftable support 231, and two housing side clamping bolt groups 232b respectively threadedly engaged with the two housing side clamping bases 232a and capable of jointly clamping the housing 14 in the front and rear direction; and

[0114] The top clamping mechanism 233 includes a top pressure plate 233a that can be opened and closed to cover the top opening between the two housing side pressure bases 232a.

[0115] During use, the top pressure plate 233a of the top clamping mechanism 233 is opened, the initial position of the liftable support 231 is adjusted, and the steering drive axle housing 1 is hoisted and placed on the liftable support 231. By adjusting the height of the liftable support 231, the horizontal center line of the steering drive axle housing 1 is basically aligned with the height of the center axis of the half-shaft hole positioning connecting piece 241b at both ends. The housing 14 is clamped by the two housing side pressure bolt groups 232b together in the front and rear direction. Finally, the top pressure plate 233a is closed and locked to complete the clamping of the steering drive axle housing 1.

[0116] In one embodiment, the reinforcing ring support assembly 22 includes a reinforcing ring support base 221 and multiple arc-edge support mechanisms 222. The multiple arc-edge support mechanisms 222 are vertically and elliptically mounted on the reinforcing ring support base 221 and collectively support the outer peripheral wall of the reinforcing ring. The reinforcing ring support assembly 22 is mounted at a central position on the fixture base 21. The multiple arc-edge support mechanisms 222 collectively support the outer peripheral wall of the reinforcing ring to provide stable support for the steering drive axle housing 1, effectively reducing the impact of vibrations during processing on the stability of the steering drive axle housing 1.

[0117] In one embodiment, the reinforcing ring support assembly 22, the housing clamping assembly 23, and the fist end positioning assembly 24 are respectively connected to the clamp base 21 in a sliding fit along the length direction of the steering drive axle housing 1.

[0118] On the fixture base 21, and at the corresponding positions of the mounting reinforcing ring support assembly 22, housing clamping assembly 23, and fist-end positioning assembly 24, multiple sliding grooves extending along the length of the fixture base 21 can be provided. Through the sliding fit connection formed between the reinforcing ring support assembly 22, housing clamping assembly 23, fist-end positioning assembly 24, and fixture base 21, the distance between the housing clamping assemblies 23 can be changed, making the machining fixture 2 suitable for providing main clamping support for different types of drive axle housings 1. By changing the distance between the fist-end positioning assemblies 24, the machining fixture 2 can be suitable for clamping and positioning different types of steering drive axle housings 1. By sliding and adjusting the position of the reinforcing ring support assembly 22, auxiliary support can be provided for different types of drive axle housings 1, thereby enabling the machining fixture 2 to be used in the machining of different types of steering drive axle housings 1.

[0119] The following describes an operation process for clamping and positioning the steering drive axle housing 1 using a machining fixture 2:

[0120] Specifically, when using the machining fixture 2 to clamp and position the steering drive axle housing 1, first open the top pressure plate 233a. Rotate the screw on the liftable support 231 to allow it to rise and fall vertically, thus adjusting its initial position. This ensures the horizontal centerline of the steering drive axle housing 1 is roughly aligned with the center axis of the half-shaft hole positioning connectors 241b at both ends. Then, hoist the steering drive axle housing 1 onto the liftable support 231, insert the half-shaft hole positioning connectors 241b into the half-shaft holes 131 of the steering drive axle housing 1, and adjust the locking bolts 243 at the ends of the steering drive axle housing 1. Initial horizontal locking is achieved by inserting the kingpin hole positioning connector 242b from top to bottom through the half-shaft hole positioning connector 241b and into the kingpin hole positioning base 242a, thus completing the initial locking of the steering drive axle housing 1 in both the horizontal and vertical directions. Then, tighten the connector locking bolt 244 and the fist-end locking bolt 243 respectively to lock the steering drive axle housing 1 in both the horizontal and vertical directions. Simultaneously, adjust and tighten the liftable support 231, the front and rear clamping mechanisms 232, and the arc-edge support mechanism 222 to their appropriate positions. Finally, close the top pressure plate 233a and lock the top clamping mechanism 233, thus completing the clamping and positioning of the steering drive axle housing 1. The machining program can then be started to perform machining on the various features on the front reinforcing ring 11 and rear reinforcing ring 12 of the steering drive axle housing 1.

[0121] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0122] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0123] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A method for machining a steering drive axle housing, comprising: The steering drive axle housing (1) is clamped and positioned by a first fixture set on a rotatable worktable of a horizontal boring and milling machine so that the central axis of the reinforcing ring of the steering drive axle housing (1) is parallel to the horizontal plane. The horizontal rotation of the rotatable worktable allows the horizontal boring and milling machine to machine the front and rear sides of the steering drive axle housing (1) respectively; The steering drive axle housing (1) is repositioned by a second clamp set on the rotatable worktable so that the central axis of the reinforcing ring is perpendicular to the horizontal plane; The two fist-shaped ends (13) of the steering drive axle housing (1) are machined using the horizontal boring and milling machine.

2. The machining method for a steering drive axle housing according to claim 1, wherein, The front side of the housing (14) of the steering drive axle housing (1) is connected to two universal positioning blocks (15) located on the radial sides of the front reinforcing ring (11). The horizontal rotation of the rotatable worktable allows the horizontal boring and milling machine to machine the front and rear sides of the steering drive axle housing (1) respectively, including: Two general positioning blocks (15) are machined respectively to machine positioning reference surfaces and positioning reference holes on both general positioning blocks (15); The steering drive axle housing (1) is repositioned by a second clamp on the rotatable worktable such that the central axis of the reinforcing ring is perpendicular to the horizontal plane, including: The positioning reference surface and the positioning reference hole on the two universal positioning blocks (15) are used as the clamping positioning reference of the second fixture.

3. The machining method for a steering drive axle housing according to claim 2, wherein, The processing method further includes: Before machining the steering drive axle housing (1) on the horizontal boring and milling machine, two universal positioning blocks (15) are welded to the front side of the housing (14).

4. A machining system for a steering drive axle housing, comprising: A horizontal boring and milling machine, including a rotatable worktable capable of horizontal rotation; A first clamp, disposed on the rotatable worktable, is used to clamp and position the steering drive axle housing (1) such that the central axis of the reinforcing ring is parallel to the horizontal plane; and The second clamp is provided on the rotatable worktable and is used to clamp and position the steering drive axle housing (1) so that the central axis of the reinforcing ring is perpendicular to the horizontal plane; By clamping and positioning the steering drive axle housing (1) in sequence with the first fixture and the second fixture, and cooperating with the horizontal rotation of the rotatable worktable, the horizontal boring and milling machine can sequentially process the front side, rear side and two fist ends (13) of the steering drive axle housing (1).

5. A machining fixture for a steering drive axle housing, comprising: Fixture base (21); A reinforcing ring support assembly (22) is provided on the clamp base (21) for supporting the reinforcing ring of the steering drive axle housing (1) so that the central axis of the reinforcing ring is parallel to the horizontal plane; A housing clamping assembly (23), disposed on the clamp base (21), is used to clamp the housing (14) of the steering drive axle housing (1); and A fist-end positioning assembly (24) is mounted on the clamp base (21) and includes a half-shaft hole positioning mechanism (241) for positioning the half-shaft hole (131) of the steering drive axle housing (1) and a master pin hole positioning mechanism (242) for positioning the master pin hole (132) of the steering drive axle housing (1). The half-shaft hole positioning mechanism (241) includes a half-shaft hole positioning base (241a) and a half-shaft hole positioning connecting piece (241b) that passes through the half-shaft hole positioning base (241a) in the horizontal direction and can be connected to the half-shaft hole (131) at one end. The master pin hole positioning mechanism (242) includes a master pin hole positioning base (242a) and a master pin hole positioning connecting piece (242b) that can pass through the peripheral wall of the half-shaft hole positioning connecting piece (241b) from top to bottom and enter the master pin hole positioning base (242a) downward.

6. The machining fixture for a steering drive axle housing according to claim 5, wherein, For the two kingpin hole positioning bases (242a) provided in the fist end positioning assembly (24) corresponding to the two fist ends (13) of the steering drive axle housing (1), one of them has a base positioning hole and the other has a base limiting groove. The base limiting groove extends in a direction parallel to the half shaft hole positioning connecting member (241b).

7. The machining fixture for a steering drive axle housing according to claim 6, wherein, The fist end positioning assembly (24) includes a fist end locking bolt (243) that forms a threaded engagement with the half-shaft hole positioning base (241a) and is capable of pressing the fist end (13) in a direction parallel to the half-shaft hole positioning connecting member (241b).

8. The machining fixture for a steering drive axle housing according to claim 5, wherein, The fist-end positioning assembly (24) includes a connecting bolt (244) that forms a threaded engagement with the half-shaft hole positioning base (241a) and is capable of radially pressing against the peripheral wall of the half-shaft hole positioning connecting bolt (241b).

9. The machining fixture for a steering drive axle housing according to claim 5, wherein, The half-shaft hole positioning connector (241b) is formed as a hollow insertion sleeve.

10. The machining fixture for a steering drive axle housing according to claim 5, wherein, The housing clamping assembly (23) includes: A liftable support base (231) is used to support the housing (14) and can drive the housing (14) to rise and fall; The front and rear clamping mechanism (232) includes two housing side clamping bases (232a) respectively disposed on the front and rear sides of the liftable support base (231) and two housing side clamping bolt groups (232b) respectively threadedly engaged with the two housing side clamping bases (232a) and capable of jointly clamping the housing (14) in the front and rear direction; and The top clamping mechanism (233) includes a top clamping plate (233a) that can be opened and closed to cover the top opening between the two housing side clamping bases (232a).

11. The machining fixture for a steering drive axle housing according to claim 5, wherein, The reinforcing ring support assembly (22) includes: Reinforcing ring support (221); and Multiple arc-edge support mechanisms (222) are vertically mounted on the reinforcing ring support base (221) and are used to jointly support the outer peripheral wall of the reinforcing ring.

12. The machining fixture for a steering drive axle housing according to any one of claims 5 to 11, wherein, The reinforcing ring support assembly (22), the housing clamping assembly (23), and the fist end positioning assembly (24) are respectively connected to the clamp base (21) in a sliding fit along the length direction of the steering drive axle housing (1).

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