Knuckle forge piece detection tool and detection method

Abstract

The invention provides a detection tool and a detection method for a steering knuckle forge piece, and the detection tool comprises a sliding seat which is provided with a positioning column and a centering positioning part; the main shaft supporting seat is matched with the centering positioning part to position the Y-direction center; the torsion supporting seat is matched with the main shaft supporting seat to position the Z-direction center; the limiting block is matched with the positioning column to position the X-direction reference; the measuring mechanism comprises a first measuring module, a second measuring module, a third measuring element and a fourth measuring module; the first measuring module is used for measuring the variable quantity of the distance A between the outer side edge of the tie rod ball head in the Y direction and the center line in the Y direction; the second measuring module is used for measuring the variable quantity of the distance B between the outer side edge of the tie rod ball head in the X direction and the flange surface; the third measuring element is used for measuring the variable quantity of the distance C between the torsion disc face and the flange disc face in the X direction. The fourth measuring module is used for measuring the variable quantity of the distance D between the tie rod ball and the center of the main shaft in the Z direction. Whether the knuckle forge piece is qualified or not can be judged by reading the numerical value of the measuring mechanism.

Description

Technical Field

[0001] This invention relates to the field of testing equipment, and in particular to a steering knuckle forging inspection tool and testing method. Background Technology

[0002] Heavy-duty integrated steering knuckle forgings have a complex structure, mainly composed of a main shaft, flange, long support arm, short support arm, torque disc, tie rod arm, and tie rod ball joint, and are heavy. Furthermore, steering knuckles are mostly forged in one piece, and the forging and heat treatment processes can easily cause deformation of the torque disc and tie rod arm, affecting machining quality. Therefore, dimensional inspection of easily deformable parts of the steering knuckle forging is necessary to ensure product quality. Current inspection methods rely on manual measurement, separately checking the spatial dimensions of the steering ball joint and the height difference of the torque disc. This is complex, inefficient, labor-intensive, and poses safety hazards. It also requires highly skilled inspectors, leading to misjudgments and the potential for defective products to be released. Summary of the Invention

[0003] The purpose of this invention is to provide a steering knuckle forging inspection tool and inspection method to solve the technical problems of existing technologies that use manual measurement, which is complicated to operate, has low inspection efficiency, high labor intensity and safety hazards, and requires high skill level of inspection personnel, which can lead to misjudgment and misidentification, and easily results in defective products being released.

[0004] To achieve the above and other related objectives, the present invention provides a steering knuckle forging inspection fixture, wherein the steering knuckle forging includes a main shaft, a flange, a long support arm, a short support arm, a torque disc, a tie rod arm, and a tie rod ball joint, and the inspection fixture includes: Base; A sliding block is slidably mounted on the base. The sliding block is provided with a positioning post and a centering positioning part. The positioning post is used to abut against the flange surface, and the centering positioning part is used to abut against the short support arm. The main shaft support seat is used to support the main shaft and cooperates with the centering and positioning part to position the Y-axis center of the steering knuckle forging; Torque support seat, used to support torque disc, cooperates with main shaft support seat to position the Z-axis center of steering knuckle forging; The limiting block is used to abut against the long arm and cooperate with the positioning column to position the X-axis reference of the steering knuckle forging; The measuring mechanism, mounted on the slide, includes a first measuring module, a second measuring module, a third measuring element, and a fourth measuring module; The first measurement module is used to measure the change in distance A between the outer edge of the tie rod ball head along the Y direction and a parallel line that is parallel to the center line of the main shaft and lies in the same plane as the tie rod ball head; The second measuring module is used to measure the change in distance B between the outer edge of the tie rod ball head along the X direction and the flange surface; The third measuring element is used to measure the change in distance C between the torque disk surface and the flange surface along the X direction; The fourth measurement module is used to measure the change in distance D between the tie rod ball head and the center of the main shaft along the Z direction.

[0005] Optionally, the measuring mechanism includes a left measuring unit and a right measuring unit symmetrically arranged on both sides of the slide along the Y direction. Each of the left measuring unit and the right measuring unit includes a first measuring module, a second measuring module, a third measuring element, and a fourth measuring module.

[0006] Optionally, the slide is provided with a mounting bracket, and the measuring mechanism is mounted on the mounting bracket.

[0007] Optionally, the first measuring module includes a first dial indicator and a first probe. The first probe is rotatably connected to the mounting bracket and abuts against the sensing end of the first dial indicator. A first return spring is provided between the first probe and the mounting bracket. The first probe is used to contact and engage with the outer edge of the pull rod ball head along the Y direction.

[0008] Optionally, the second measuring module includes a second dial indicator and a second probe. The second probe is rotatably mounted on the mounting bracket and abuts against the sensing end of the second dial indicator. A second return spring is provided between the second probe and the mounting bracket. The second probe is used to contact and cooperate with the outer edge of the pull rod ball head along the X direction.

[0009] Optionally, the third measuring element is a third dial indicator, and the sensing end of the third dial indicator is used to contact and engage with the end face of the torque disk along the X direction.

[0010] Optionally, the fourth measuring module includes a fourth dial indicator and a third probe. The third probe is rotatably connected to the mounting bracket and abuts against the sensing end of the fourth dial indicator. A third return spring is provided between the mounting bracket and the third probe. The third probe is used to contact and cooperate with the inner edge of the pull rod ball head along the Z direction.

[0011] Optionally, the slide is provided with a handle, which is used to drive the slide to move along the X direction so that the positioning post abuts against the flange surface and the centering positioning part abuts against the short support arm.

[0012] Optionally, the centering positioning part is slidably disposed on the slide block, the slide block is provided with a baffle, and a fourth return spring is provided between the centering positioning part and the baffle.

[0013] The present invention also provides a method for inspecting steering knuckle forgings, applied to the steering knuckle forging inspection fixture described above, the inspection method comprising: Place the spindle on the spindle support and the torque plate on the torque support. Push the slide block to slide along the X direction, so that the positioning pin contacts the flange surface, the centering positioning component abuts against the short support arm, and push the steering knuckle forging to move along the X direction to the long support arm abut against the limit block. The deformation of the steering knuckle forging is determined by reading the values ​​from the first measuring module, the second measuring module, the third measuring element, and the fourth measuring module.

[0014] As described above, the steering knuckle forging inspection fixture and inspection method of the present invention have the following beneficial effects: By placing the spindle on the spindle support seat and the torque plate on the torque support seat, the slide is pushed to move along the X direction, so that the positioning pin abuts against the flange surface, the centering positioning part abuts against the short support arm, and the steering knuckle forging is pushed to move along the X direction until the long support arm abuts against the limiting block, thereby completing the clamping and positioning of the steering knuckle forging and the inspection fixture. The Y-axis reference of the steering knuckle forging is positioned by the cooperation of the spindle support seat and the centering positioning part, the Z-axis reference of the steering knuckle forging is positioned by the cooperation of the torque support seat and the spindle support seat, and the X-axis reference of the steering knuckle forging is positioned by the cooperation of the limiting block and the positioning pin. Therefore, by reading the readings of the first measuring module, the second measuring module, the third measuring element, and the fourth measuring module set on the slide, the A, B, C, and D dimensional deformation of the steering knuckle forging can be determined. The steering knuckle forging inspection tool proposed in this application can determine the deformation of four key dimensions of the workpiece with only one clamping and positioning, which has the advantages of simple operation and high inspection efficiency. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0016] In the attached diagram: Figure 1 The image shown is a top view of a steering knuckle forging inspection fixture structure according to an embodiment of the present invention; Figure 2 The image shown is a front view of a steering knuckle forging fixture structure according to an embodiment of the present invention. Figure 3 This is a schematic diagram showing the positioning state of the left part of the steering knuckle forging inspection tool according to an embodiment of the present invention; Figure 4This is a schematic diagram showing the positioning state of the right part of the steering knuckle forging inspection tool according to an embodiment of the present invention; Figure 5 The diagram shown is a structural schematic of the left component of a steering knuckle forging according to an embodiment of the present invention. Figure 6 The diagram shown is a structural schematic of the right-side component of a steering knuckle forging according to an embodiment of the present invention. Figure 7 The image shown is a bottom view of a steering knuckle forging according to an embodiment of the present invention; Figure 8 The flowchart shown is a method for testing steering knuckle forgings according to an embodiment of the present invention.

[0017] The attached figures are labeled as follows: Main spindle 101, flange 102, long support arm 103, short support arm 104, torque plate 105, tie rod ball head 106, base 2, slide 3, positioning column 301, centering positioning part 302, mounting bracket 303, handle 304, baffle 305, main spindle support seat 4, torque support seat 5, limit block 6, first measuring module 7, first dial indicator 701, first probe 702, second measuring module 8, second dial indicator 801, second probe 802, third measuring element 9, fourth measuring module 10, fourth dial indicator 1001, third probe 1002, first return spring 11, second return spring 12, third return spring 13, fourth return spring 14. Detailed Implementation

[0018] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0019] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0020] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0021] Please see Figures 1 to 7 As shown, the present invention provides a steering knuckle forging inspection tool, the steering knuckle forging including a main shaft 101, a flange 102, a long support arm 103, a short support arm 104, a torque plate 105, and a tie rod ball joint 106.

[0022] In an exemplary embodiment of this application, the steering knuckle forging inspection fixture includes: Base 2; The slide block 3 is slidably mounted on the base 2. The slide block 3 is provided with a positioning post 301 and a centering positioning part 302. The positioning post 301 is used to abut against the flange 102, and the centering positioning part 302 is used to abut against the short support arm 104. The main shaft support 4 is used to support the main shaft 101 and cooperates with the centering and positioning part 302 to position the Y-axis center of the steering knuckle forging. Torque support seat 5 is used to support torque disc 105 and cooperates with main shaft support seat 4 to position the Z-axis center of steering knuckle forging; Limiting block 6 is used to abut against the long arm 103 and cooperate with the positioning column 301 to position the X-axis reference of the steering knuckle forging; The measuring mechanism, mounted on the slide 3, includes a first measuring module 7, a second measuring module 8, a third measuring element 9, and a fourth measuring module 10; The first measuring module 7 is used to measure the change in distance A between the outer edge of the tie rod ball head 106 along the Y direction and a parallel line parallel to the center line of the main shaft 101 and located in the same plane as the tie rod ball head 106. The second measuring module 8 is used to measure the change in distance B between the outer edge of the tie rod ball head 106 along the X direction and the surface of the flange 102; The third measuring element 9 is used to measure the change in distance C between the surface of the torque plate 105 and the surface of the flange 102 along the X direction; The fourth measuring module 10 is used to measure the change in distance D between the tie rod ball head 106 and the spindle center 101 along the Z direction.

[0023] In this embodiment, the spindle 101 is placed on the spindle support 4, and the torque disk 105 is placed on the torque support 5. This pushes the slide 3 to move along the X-direction, causing the positioning pin 301 to abut against the flange 102, the centering positioning part 302 to abut against the short support arm 104, and the steering knuckle forging to move along the X-direction until the long support arm 103 abuts against the limiting block 6, thus completing the clamping and positioning of the steering knuckle forging and the inspection fixture. The Y-direction reference of the steering knuckle forging is positioned by the spindle support 4 and the centering positioning part 302, the Z-direction reference of the steering knuckle forging is positioned by the torque support 5 and the spindle support 4, and the X-direction reference of the steering knuckle forging is positioned by the limiting block 6 and the positioning pin 301. Therefore, by reading the readings from the first measuring module 7, the second measuring module 8, the third measuring element 9, and the fourth measuring module 10 set on the slide 3, the A, B, C, and D dimension deformation of the steering knuckle forging can be determined. The steering knuckle forging inspection tool proposed in this application can determine the deformation of four key dimensions of the workpiece with only one clamping and positioning, which has the advantages of simple operation and high inspection efficiency.

[0024] In an exemplary embodiment of this application, the measuring mechanism includes a left measuring unit and a right measuring unit symmetrically arranged on both sides of the slide block 3 along the Y direction. Both the left measuring unit and the right measuring unit include a first measuring module 7, a second measuring module 8, a third measuring element 9, and a fourth measuring module 10.

[0025] In this embodiment, the steering knuckle forging includes a left part and a right part. The steering knuckle forging inspection fixture shown in this application embodiment includes a left part measuring unit and a right part measuring unit symmetrically arranged on both sides of the slide block 3 along the Y direction, so that this application can be compatible with the inspection of the left and right parts of the steering knuckle forging, avoid the repeated design and manufacture of the inspection fixture, and effectively reduce the manufacturing cost of the inspection fixture.

[0026] In an exemplary embodiment of this application, a mounting bracket 303 is provided on the slide 3, and a measuring mechanism is disposed on the mounting bracket 303.

[0027] In this embodiment, the mounting bracket 303 is connected to the slide block 3 by bolts. The left part measuring unit and the right part measuring unit are symmetrically installed on the bracket. Through the structure of the bracket, the measuring mechanism after installation corresponds to the dimension measuring part of the steering section forging, thereby completing the dimension deformation detection of the steering knuckle forging.

[0028] In an exemplary embodiment of this application, the first measuring module 7 includes a first dial indicator 701 and a first probe 702. The first probe 702 is rotatably connected to the mounting bracket 303 and abuts against the sensing end of the first dial indicator 701. A first return spring 11 is provided between the first probe 702 and the mounting bracket 303. The first probe 702 is used to contact and cooperate with the outer edge of the pull rod ball head 106 along the Y direction.

[0029] In this embodiment, after the steering knuckle forging is placed on the fixture and positioned, the outer edge of the tie rod ball joint 106 along the Y direction will contact the first probe 702. During the compression process, the first probe 702 will trigger the sensing end of the first dial indicator 701. By reading the value on the first dial indicator 701, the deformation of dimension A of the steering knuckle forging can be determined, thereby confirming whether dimension A of the steering knuckle forging is qualified. The first probe 702 is rotatably connected to the mounting bracket 303. When the steering knuckle forging compresses the first probe 702, the first probe 702 and the mounting bracket 303 rotate, thereby triggering the sensing end of the first dial indicator 701, and the first dial indicator 701 directly displays the value. The purpose of setting the first return spring 11 between the first probe 702 and the mounting bracket 303 is to ensure that after the measurement of the steering knuckle forging is completed, the first probe 702 can return to its original position under the action of the first return spring 11, avoiding the reading of the first dial indicator 701 remaining at the reading of the previous measurement process, which would affect subsequent measurements.

[0030] In an exemplary embodiment of this application, the second measuring module 8 includes a second dial indicator 801 and a second probe 802. The second probe 802 is rotatably mounted on the mounting bracket 303 and abuts against the sensing end of the second dial indicator 801. A second return spring 12 is provided between the second probe 802 and the mounting bracket 303. The second probe 802 is used to contact and cooperate with the outer edge of the pull rod ball head 106 in the X direction.

[0031] In this embodiment, after the steering knuckle forging is placed on the fixture and positioned, the outer edge of the tie rod ball joint 106 along the X direction will contact the second probe 802. During the compression process, the second probe 802 will trigger the sensing end of the second dial indicator 801. By reading the value on the second dial indicator 801, the deformation of dimension B of the steering knuckle forging can be determined, thereby confirming whether dimension B of the steering knuckle forging is qualified. The second probe 802 is rotatably connected to the mounting bracket 303. When the steering knuckle forging compresses the second probe 802, the second probe 802 and the mounting bracket 303 rotate, thereby triggering the sensing end of the second dial indicator 801, which directly displays the value. The purpose of setting the second return spring 12 between the second probe 802 and the mounting bracket 303 is to ensure that after the steering knuckle forging is measured, the second probe 802 can return to its original position under the action of the second return spring 12, preventing the reading of the second dial indicator 801 from remaining at the reading of the previous measurement process and affecting subsequent measurements.

[0032] In an exemplary embodiment of this application, the third measuring element 9 is a third dial indicator, and the sensing end of the third dial indicator is used to contact and cooperate with the end face of the torque disk 105 along the X direction.

[0033] In this embodiment, after the steering knuckle forging is placed on the inspection fixture and positioned, the end face of the torque disc 105 along the X direction will contact the sensing end of the third dial indicator. By reading the value on the third dial indicator, the deformation of dimension C of the steering knuckle forging can be determined, thereby confirming whether dimension C of the steering knuckle forging is qualified.

[0034] In an exemplary embodiment of this application, the fourth measuring module 10 includes a fourth dial indicator 1001 and a third probe 1002. The third probe 1002 is rotatably connected to the mounting bracket 303 and abuts against the sensing end of the fourth dial indicator 1001. A third return spring 13 is provided between the mounting bracket 303 and the third probe 1002. The third probe 1002 is used to contact and cooperate with the inner edge of the pull rod ball head 106 along the Z direction.

[0035] In this embodiment, after the steering knuckle forging is placed on the fixture and positioned, the inner edge of the tie rod ball joint 106 along the Z direction will contact the third probe 1002. During the compression process, the third probe 1002 will trigger the sensing end of the fourth dial indicator 1001. By reading the value on the fourth dial indicator 1001, the deformation of dimension D of the steering knuckle forging can be determined, thereby confirming whether dimension D of the steering knuckle forging is qualified. The third probe 1002 is rotatably connected to the mounting bracket 303. When the steering knuckle forging compresses the third probe 1002, the third probe 1002 and the mounting bracket 303 rotate, thereby triggering the sensing end of the fourth dial indicator 1001, and the value is directly displayed by the fourth dial indicator 1001. The purpose of setting the third return spring 13 between the third probe 1002 and the mounting bracket 303 is to ensure that after the steering knuckle forging is measured, the third probe 1002 can return to its original position under the action of the third return spring 13, so as to avoid the reading of the fourth dial indicator 1001 remaining at the reading of the previous measurement process, which would affect subsequent measurements.

[0036] In an exemplary embodiment of this application, the slide block 3 is provided with a handle 304, which is used to drive the slide block 3 to move along the X direction so that the positioning post 301 abuts against the flange 102 and the centering positioning part 302 abuts against the short support arm 104.

[0037] In this embodiment, by setting a handle 304 on the slide block 3 as a driving component of the slide block 3, the operator can easily apply force to drive the slide block 3 to move along the X direction, so that the positioning column 301 abuts against the flange 102 and the centering positioning part 302 abuts against the short support arm 104, thereby completing the positioning of the steering knuckle forging and the inspection tool.

[0038] In an exemplary embodiment of this application, the centering positioning part 302 is slidably disposed on the slide block 3, the slide block 3 is provided with a baffle 305, and a fourth return spring 14 is provided between the centering positioning part 302 and the baffle 305.

[0039] In this embodiment, the centering positioning part 302 is a V-shaped block, and the main shaft support seat 4 is also a V-shaped structure. Combined with the cooperation between the V-shaped centering positioning part 302 and the short support arm 104, and the cooperation between the V-shaped structure of the main shaft support seat 4 and the main shaft 101 of the steering knuckle forging, the centering of the steering knuckle forging in the Y direction is achieved, ensuring that the position of the steering knuckle forging remains unchanged and improving the accuracy of measurement. By setting the baffle 305 and the fourth return spring 14, the fourth return spring 14 presses the centering positioning part 302 close to the steering knuckle forging, so that the position of the steering knuckle forging is further positioned.

[0040] Please see Figure 8 As shown, this application also provides a method for inspecting steering knuckle forgings, which is applied to the steering knuckle forging inspection tool described above.

[0041] In an exemplary embodiment of this application, the detection method includes at least steps S110 to S130.

[0042] In step S110, the spindle 101 is placed on the spindle support 4, and the torque disk 105 is placed on the torque support 5.

[0043] For example, the Z-axis center of the steering knuckle forging is defined by the main shaft support 4 and the torsion support 5, and the D dimension is checked to see if it is qualified.

[0044] In step S120, the slide block 3 is pushed to slide along the X direction, so that the positioning pin 301 contacts the flange 102, the centering positioning part 302 abuts against the short support arm 104, and the steering knuckle forging is pushed to move along the X direction until the long support arm 103 abuts against the limiting block 6.

[0045] For example, the positioning pin 301 abuts against the flange 102, and the limiting block 6 abuts against the long support arm 103, thereby defining the X-axis reference of the steering knuckle forging and detecting whether the B and C dimensions are qualified; the centering positioning part 302 abuts against the short support arm 104, and the centering positioning part 302 combines with the main shaft support seat 4 to define the Y-axis center of the steering knuckle forging, thereby detecting whether the A dimension of the steering knuckle forging is qualified.

[0046] In step S130, the values ​​of the first measuring module 7, the second measuring module 8, the third measuring element 9, and the fourth measuring module 10 are read to determine the deformation of the steering knuckle forging.

[0047] For example, after the steering knuckle forging and the inspection fixture are positioned and installed, the parts of the steering knuckle forging that need to be inspected will come into contact with the corresponding measuring modules. By reading the readings of each measuring module, it can be quickly determined whether the dimensions A, B, C, and D of the steering knuckle forging are qualified.

[0048] The working principle is as follows: the spindle 101 is placed on the spindle support 4, and the torque plate 105 is placed on the torque support 5. This pushes the slide 3 to move along the X direction, causing the positioning pin 301 to abut against the flange 102, the centering positioning part 302 to abut against the short support arm 104, and the steering knuckle forging to move along the X direction until the long support arm 103 abuts against the limiting block 6, thus completing the clamping and positioning of the steering knuckle forging and the inspection fixture. The Y-axis reference of the steering knuckle forging is positioned by the cooperation of the spindle support 4 and the centering positioning part 302, the Z-axis reference of the steering knuckle forging is positioned by the cooperation of the torque support 5 and the spindle support 4, and the X-axis reference of the steering knuckle forging is positioned by the cooperation of the limiting block 6 and the positioning pin 301. Therefore, by reading the readings of the first measuring module 7, the second measuring module 8, the third measuring element 9, and the fourth measuring module 10 set on the slide 3, the A, B, C, and D dimension deformation of the steering knuckle forging can be determined. The steering knuckle forging inspection tool proposed in this application can determine the deformation of four key dimensions of the workpiece with only one clamping and positioning, which has the advantages of simple operation and high inspection efficiency.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A steering knuckle forging inspection fixture, the steering knuckle forging comprising a main shaft, a flange, a long support arm, a short support arm, a torque disc, and a tie rod ball joint, characterized in that, The inspection tool includes: Base; A sliding block is slidably mounted on the base. The sliding block is provided with a positioning post and a centering positioning part. The positioning post is used to abut against the flange surface, and the centering positioning part is used to abut against the short support arm. The main shaft support seat is used to support the main shaft and cooperates with the centering and positioning part to position the Y-axis center of the steering knuckle forging; Torque support seat, used to support torque disc, cooperates with main shaft support seat to position the Z-axis center of steering knuckle forging; The limiting block is used to abut against the long arm and cooperate with the positioning column to position the X-axis reference of the steering knuckle forging; The measuring mechanism, mounted on the slide, includes a first measuring module, a second measuring module, a third measuring element, and a fourth measuring module; The first measurement module is used to measure the change in distance A between the outer edge of the tie rod ball head along the Y direction and a parallel line that is parallel to the center line of the main shaft and lies in the same plane as the tie rod ball head; The second measuring module is used to measure the change in distance B between the outer edge of the tie rod ball head along the X direction and the flange surface; The third measuring element is used to measure the change in distance C between the torque disk surface and the flange surface along the X direction; The fourth measurement module is used to measure the change in distance D between the tie rod ball head and the center of the main shaft along the Z direction.

2. The steering knuckle forging inspection tool according to claim 1, characterized in that: The measuring mechanism includes a left measuring unit and a right measuring unit symmetrically arranged on both sides of the slide along the Y direction. Each of the left measuring unit and the right measuring unit includes a first measuring module, a second measuring module, a third measuring element, and a fourth measuring module.

3. The inspection fixture for steering knuckle forgings according to claim 1, characterized in that: The slide is provided with a mounting bracket, and the measuring mechanism is mounted on the mounting bracket.

4. The inspection fixture for steering knuckle forgings according to claim 3, characterized in that: The first measuring module includes a first dial indicator and a first probe. The first probe is rotatably connected to the mounting bracket and abuts against the sensing end of the first dial indicator. A first return spring is provided between the first probe and the mounting bracket. The first probe is used to contact and cooperate with the outer edge of the pull rod ball head along the Y direction.

5. The inspection fixture for steering knuckle forgings according to claim 3, characterized in that: The second measuring module includes a second dial indicator and a second probe. The second probe is rotatably mounted on the mounting bracket and abuts against the sensing end of the second dial indicator. A second return spring is provided between the second probe and the mounting bracket. The second probe is used to contact and cooperate with the outer edge of the pull rod ball head along the X direction.

6. The inspection fixture for steering knuckle forgings according to claim 3, characterized in that: The third measuring element is a third dial indicator, and the sensing end of the third dial indicator is used to contact and cooperate with the end face of the torque disk along the X direction.

7. The steering knuckle forging inspection fixture according to claim 3, characterized in that: The fourth measuring module includes a fourth dial indicator and a third probe. The third probe is rotatably connected to the mounting bracket and abuts against the sensing end of the fourth dial indicator. A third return spring is provided between the mounting bracket and the third probe. The third probe is used to contact and cooperate with the inner edge of the pull rod ball head along the Z direction.

8. The inspection fixture for steering knuckle forgings according to claim 1, characterized in that: The slide block is provided with a handle, which is used to drive the slide block to move along the X direction so that the positioning post abuts against the flange surface and the centering positioning part abuts against the short support arm.

9. The inspection fixture for steering knuckle forgings according to claim 8, characterized in that: The centering and positioning part is slidably mounted on the slide block, the slide block is provided with a baffle, and a fourth return spring is provided between the centering and positioning part and the baffle.

10. A method for inspecting steering knuckle forgings, applied to the steering knuckle forging inspection fixture as described in any one of claims 1 to 9, characterized in that, The detection method includes: Place the spindle on the spindle support and the torque plate on the torque support. Push the slide block to slide along the X direction, so that the positioning pin contacts the flange surface, the centering positioning component abuts against the short support arm, and push the steering knuckle forging to move along the X direction to the long support arm abut against the limit block. The deformation of the steering knuckle forging is determined by reading the values ​​from the first measuring module, the second measuring module, the third measuring element, and the fourth measuring module.

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