An outer contour gauge for a planetary carrier

Abstract

The present application belongs to the technical field of profile matching degree detection, and particularly relates to an outer profile gauge for a planet carrier, which comprises a rack and a portal frame arranged on the rack, and further comprises a sliding gauge assembly, a lifting assembly, a coaxial retaining assembly, a horizontal reversing assembly, a reversing adjusting assembly, a lifting guide assembly and a connecting rod assembly. The sliding gauge assembly is arranged on the rack, and the lifting assembly is arranged in the sliding gauge assembly. Through reciprocating lifting of the quick-release coupling, the profile matching degree of the current feature can be detected through transverse sliding of the sliding gauge block when the planet carrier workpiece is at a low position, and the planet carrier workpiece can be adjusted in the horizontal direction through abutment with the contact disc when the planet carrier workpiece is at a high position. In addition, through expansion of the coaxial retaining assembly, the position of the central axis of the planet carrier workpiece can be kept unchanged after the planet carrier workpiece is lifted away from the positioning pin.

Description

Technical Field

[0001] This invention belongs to the field of contour matching degree detection technology, specifically referring to an outer contour inspection tool for a planetary carrier. Background Technology

[0002] The external contour of the planetary carrier is relatively complex. In addition to high-precision features such as mounting holes, there are also many clearance slots such as side grooves. These features do not require precision instruments such as coordinate measuring machines for inspection, but dimensional inspection is still necessary to avoid interference with gears after assembly.

[0003] Because the planetary carrier has a large number of side slot features, how to conduct efficient and effective detection has been a long-standing problem for those skilled in the art. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, this invention proposes a detection method that judges the qualification degree of a feature by the matching degree of the feature and the inspection block. This solution uses the reciprocating lifting of the quick-release coupling to perform matching degree detection of the current feature by the lateral sliding of the sliding inspection block when the planetary carrier workpiece is in a low position; and to adjust the horizontal direction by abutting against the contact plate when the planetary carrier workpiece is in a high position. In addition, by maintaining the expansion connection of the coaxial retaining components, the planetary carrier workpiece can still maintain the position of its central axis after rising and disengaging from the locating pin.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes an outer contour inspection fixture for a planetary carrier, including a frame and a gantry frame mounted on the frame, and further including a sliding inspection fixture assembly, a lifting assembly, a coaxial holding assembly, a horizontal reversing assembly, a reversing adjustment assembly, a lifting guide assembly, and a connecting rod assembly. The sliding inspection fixture assembly is mounted on the frame, the lifting assembly is mounted in the sliding inspection fixture assembly, and the coaxial holding assembly is mounted on the lifting assembly. The horizontal reversing assembly is mounted on the coaxial holding assembly, the reversing adjustment assembly is mounted on the lifting assembly, the horizontal reversing assembly is located above the sliding fixture assembly, the lifting guide assembly is located below the frame, and the connecting rod assembly is located between the sliding fixture assembly and the lifting guide assembly. Furthermore, the sliding fixture assembly includes a fixture base, a sliding inspection block, and a planetary carrier workpiece. The fixture base is mounted on the frame, the sliding inspection block is slidably mounted on the fixture base, and the planetary carrier workpiece is located on the fixture base.

[0006] After the lifting assembly lifts the planetary carrier workpiece, the horizontal reversing assembly can change the orientation of the planetary carrier workpiece, thereby enabling the one-by-one detection of the annularly distributed feature dimensions.

[0007] Preferably, the fixture base is provided with a sliding groove, the sliding inspection block is engaged and slidably disposed in the sliding groove, the fixture base is provided with locating pins evenly distributed in a ring, the top of the locating pin is provided with a guide ramp, and the sliding inspection block is provided with a protrusion. By the matching degree between the protrusion and the planetary carrier workpiece, it is possible to determine whether the dimensional characteristics of the planetary carrier workpiece meet the requirements.

[0008] The top of the positioning pin is provided with a guide ramp to guide the adjustment of the planetary carrier workpiece direction, thereby allowing the horizontal reversing assembly to have a certain error when adjusting the angle of the planetary carrier workpiece, thus improving the reliability and stability of the device in actual use.

[0009] Furthermore, the lifting assembly includes an input shaft, a reciprocating lead screw, a reciprocating nut, and a quick-release coupling. The input shaft is rotatably mounted in the gantry frame. The input shaft and the reciprocating lead screw are connected by the quick-release coupling, and the reciprocating nut and the reciprocating lead screw are connected by a threaded drive.

[0010] The reciprocating screw rotates with the input shaft, thereby driving the reciprocating nut to move up and down repeatedly during the rotation of the input shaft, thus achieving the lifting and resetting of the planetary carrier workpiece.

[0011] Furthermore, the coaxial retaining assembly includes a top block, an expansion frame, and an expansion wedge. The top block is rotatably disposed above the reciprocating nut, and the top of the top block is provided with a frustum portion. The expansion frame is located in the reciprocating lead screw, and the expansion wedge is engaged and slidably disposed in the expansion frame. The frustum portion and the expansion wedge are in sliding contact.

[0012] As the top block rises with the reciprocating nut, it can push the expansion wedge block to extend synchronously and abut against the planetary carrier workpiece, thereby maintaining the coaxiality of the planetary carrier workpiece with the fixture base during the horizontal angle adjustment process.

[0013] Furthermore, the horizontal reversing assembly includes a horizontal turntable and a contact plate, the contact plate being fixedly connected below the horizontal turntable; when the contact plate comes into contact with the planetary carrier workpiece, it can drive the planetary carrier workpiece to rotate.

[0014] Furthermore, the reversing adjustment assembly includes an adjustment base and a tension spring. The adjustment base is provided with a set screw mounting hole. The adjustment base is adjustablely mounted on the input shaft via the set screw. The tension spring is located between the adjustment base and the horizontal turntable.

[0015] By adjusting the longitudinal height of the base, the time it takes for the planetary carrier workpiece to contact the contact plate during the lifting process can be changed, thereby enabling the preset of the single rotation angle while keeping the rotation speed of the horizontal reversing component constant.

[0016] Preferably, the adjusting base is provided with slide bars evenly distributed in a ring, and the horizontal turntable is provided with slide grooves evenly distributed in a ring, corresponding to the slide bars.

[0017] Furthermore, the lifting guide assembly includes a guide rod, a guide seat, and an extension rod. The guide rod is fixedly connected to the lower part of the frame, the guide seat is engaged and slidably disposed on the guide rod, the extension rod is fixedly connected to the lower part of the reciprocating nut, and the extension rod is fixedly connected in the guide seat.

[0018] Furthermore, the linkage assembly includes a transverse slider, a hinge seat, and a hinge link. The transverse slider is fixedly connected to the lower part of the sliding block, the hinge seat is fixedly connected to the guide seat and the transverse slider, and the two ends of the hinge link are hinged to the hinge seat.

[0019] Through the synchronization of the linkage assembly, the sliding detector block can be driven to slide sideways and avoid displacement while the planetary carrier workpiece is rising, and the sliding detector block can be driven to reset and detect after the planetary carrier workpiece is falling, thus achieving the technical objective of simultaneous movement of the sliding detector block and the planetary carrier workpiece according to their own functional requirements.

[0020] The beneficial effects achieved by the present invention using the above structure are as follows: (1) After the lifting assembly lifts the planetary carrier workpiece, the direction of the planetary carrier workpiece can be changed by the horizontal reversing assembly, so as to detect the characteristic dimensions of the ring-shaped distribution one by one.

[0021] (2) The top of the positioning pin is provided with a guide ramp to guide the adjustment of the planetary carrier workpiece direction, thereby allowing the horizontal reversing assembly to have a certain error when adjusting the angle of the planetary carrier workpiece, thus improving the reliability and stability of the device in actual use.

[0022] (3) The reciprocating screw rotates with the input shaft, thereby driving the reciprocating nut to move up and down repeatedly during the rotation of the input shaft, thus realizing the lifting and resetting of the planetary carrier workpiece.

[0023] (4) While the top block rises with the reciprocating nut, it can push the expansion wedge block to extend synchronously and abut against the planetary carrier workpiece, thereby maintaining the coaxiality of the planetary carrier workpiece with the inspection fixture base during the horizontal angle adjustment process.

[0024] (5) By adjusting the longitudinal height of the base, the time when the planetary carrier workpiece contacts the contact plate during the lifting process can be changed, thereby achieving the preset of the single rotation angle under the premise that the rotation speed of the horizontal reversing component remains unchanged.

[0025] (6) Through the synchronization of the linkage assembly, the sliding detection block can be driven to slide and avoid the position while the planetary carrier workpiece is rising, and the sliding detection block can be driven to reset and detect after the planetary carrier workpiece is falling, so as to achieve the technical purpose of the sliding detection block and the planetary carrier workpiece moving simultaneously according to their own functional requirements. Attached Figure Description

[0026] Figure 1 This is a perspective view of a planetary carrier outer contour inspection fixture proposed in this invention; Figure 2 This is a front view of the outer contour inspection fixture for a planetary carrier proposed in this invention; Figure 3 This is a left view of the outer contour inspection fixture for a planetary carrier proposed in this invention; Figure 4 for Figure 2 A cross-sectional view along section line AA; Figure 5 for Figure 4 A cross-sectional view along the cutting line BB; Figure 6 for Figure 4 A magnified view of a section at point I; Figure 7 for Figure 5 Enlarged view of a section at point II; Figure 8 for Figure 1 A magnified view of section III in the middle.

[0027] The components include: 1. Sliding fixture assembly; 2. Lifting assembly; 3. Coaxial holding assembly; 4. Horizontal reversing assembly; 5. Reversing adjustment assembly; 6. Lifting guide assembly; 7. Linkage assembly; 8. Frame; 11. Fixture base; 12. Sliding inspection block; 13. Planetary carrier workpiece; 21. Input shaft; 22. Reciprocating lead screw; 23. Reciprocating nut; 24. Quick-release coupling; 31. Top block; 32. Expansion bracket; 33. Expansion wedge; 4. 1. Horizontal turntable; 42. Contact plate; 51. Adjusting base; 52. Tension spring; 61. Guide rod; 62. Guide seat; 63. Extension rod; 71. Transverse slider; 72. Hinge seat; 73. Hinge connecting rod; 81. Gantry frame; 111. Sliding groove; 112. Positioning pin; 113. Guide ramp; 121. Protrusion; 311. Frustum section; 411. Slide groove section; 511. Set screw mounting hole; 512. Slide bar section.

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] like Figures 1-8 As shown, the present invention proposes an outer contour inspection fixture for a planetary carrier, including a frame 8 and a gantry 81 mounted on the frame 8, and further including a sliding inspection fixture assembly 1, a lifting assembly 2, a coaxial holding assembly 3, a horizontal reversing assembly 4, a reversing adjustment assembly 5, a lifting guide assembly 6, and a connecting rod assembly 7. The sliding inspection fixture assembly 1 is mounted on the frame 8, the lifting assembly 2 is mounted in the sliding inspection fixture assembly 1, and the coaxial holding assembly 3 is mounted on the lifting assembly 2. The horizontal reversing assembly 4 is mounted on the coaxial holding assembly 3, the reversing adjustment assembly 5 is mounted on the lifting assembly 2, the horizontal reversing assembly 4 is located above the sliding fixture assembly 1, the lifting guide assembly 6 is located below the frame 8, and the connecting rod assembly 7 is located between the sliding fixture assembly 1 and the lifting guide assembly 6. The sliding inspection fixture assembly 1 includes an inspection fixture base 11, a sliding inspection block 12, and a planetary carrier workpiece 13. The inspection fixture base 11 is mounted on the frame 8, the sliding inspection block 12 is slidably mounted on the inspection fixture base 11, and the planetary carrier workpiece 13 is located on the inspection fixture base 11.

[0032] After the lifting assembly 2 lifts the planetary carrier workpiece 13, the horizontal reversing assembly 4 can change the direction of the planetary carrier workpiece 13, thereby detecting the annularly distributed feature dimensions one by one.

[0033] The fixture base 11 is provided with a sliding groove 111, and the sliding inspection block 12 is engaged and slidably disposed in the sliding groove 111. The fixture base 11 is provided with locating pins 112 evenly distributed in a ring, and the top of the locating pins 112 is provided with a guide ramp 113. The sliding inspection block 12 is provided with a protrusion 121. By the matching degree between the protrusion 121 and the planetary carrier workpiece 13, it is possible to determine whether the dimensional characteristics of the planetary carrier workpiece 13 meet the requirements.

[0034] The top of the positioning pin 112 is provided with a guide ramp 113 to guide and adjust the direction of the planetary carrier workpiece 13, thereby allowing the horizontal reversing assembly 4 to have a certain error when adjusting the angle of the planetary carrier workpiece 13, thus improving the reliability and stability of the device in actual use.

[0035] The lifting assembly 2 includes an input shaft 21, a reciprocating lead screw 22, a reciprocating nut 23, and a quick-release coupling 24. The input shaft 21 is rotatably mounted in the gantry frame 81. The input shaft 21 and the reciprocating lead screw 22 are connected by the quick-release coupling 24, and the reciprocating nut 23 and the reciprocating lead screw 22 are connected by a threaded drive.

[0036] The reciprocating lead screw 22 rotates with the input shaft 21, thereby driving the reciprocating nut 23 to reciprocate up and down during the rotation of the input shaft 21, thus realizing the lifting and resetting of the planetary carrier workpiece 13.

[0037] The coaxial retaining assembly 3 includes a top block 31, an expansion frame 32, and an expansion wedge 33. The top block 31 is rotatably disposed above the reciprocating nut 23. The top of the top block 31 is provided with a frustum portion 311. The expansion frame 32 is located in the reciprocating lead screw 22. The expansion wedge 33 is engaged and slidably disposed in the expansion frame 32. The frustum portion 311 and the expansion wedge 33 are in sliding contact.

[0038] As the top block 31 rises with the reciprocating nut 23, it can push the expansion wedge block 33 to extend synchronously and abut against the planetary carrier workpiece 13, thereby maintaining the coaxiality of the planetary carrier workpiece 13 with the inspection fixture base 11 during the horizontal angle adjustment process.

[0039] The horizontal reversing assembly 4 includes a horizontal turntable 41 and a contact plate 42. The contact plate 42 is fixedly connected to the lower part of the horizontal turntable 41. When the contact plate 42 comes into contact with the planetary carrier workpiece 13, it can drive the planetary carrier workpiece 13 to rotate.

[0040] The reversing adjustment assembly 5 includes an adjustment base 51 and a tension spring 52. The adjustment base 51 is provided with a set screw mounting hole 511. The adjustment base 51 is adjustable on the input shaft 21 by means of a set screw. The tension spring 52 is located between the adjustment base 51 and the horizontal turntable 41.

[0041] By adjusting the longitudinal height of the base 51, the time it takes for the planetary carrier workpiece 13 to contact the contact plate 42 during the lifting process can be changed, thereby achieving the preset of the single rotation angle under the premise that the rotation speed of the horizontal reversing component 4 remains unchanged.

[0042] The adjusting base 51 is provided with slide bars 512 evenly distributed in a ring, and the horizontal turntable 41 is provided with slide grooves 411 corresponding to the slide bars 512 evenly distributed in a ring.

[0043] The lifting guide assembly 6 includes a guide rod 61, a guide seat 62, and an extension rod 63. The guide rod 61 is fixedly connected to the lower part of the frame 8. The guide seat 62 is engaged and slidably mounted on the guide rod 61. The extension rod 63 is fixedly connected to the lower part of the reciprocating nut 23 and is fixedly connected in the guide seat 62.

[0044] The linkage assembly 7 includes a transverse slider 71, a hinge seat 72, and a hinge link 73. The transverse slider 71 is fixedly connected to the lower part of the sliding block 12, the hinge seat 72 is fixedly connected to the guide seat 62 and the transverse slider 71, and the two ends of the hinge link 73 are hinged to the hinge seat 72.

[0045] Through the synchronization of the linkage assembly 7, the sliding detection block 12 can be driven to slide and avoid a position while the planetary carrier workpiece 13 is rising, and the sliding detection block 12 can be driven to reset and detect after the planetary carrier workpiece 13 is falling, so as to achieve the technical purpose of the sliding detection block 12 and the planetary carrier workpiece 13 moving simultaneously according to their own functional requirements.

[0046] In practical use, the input shaft 21 is driven to rotate by an external input device such as a motor. The input shaft 21 drives the reciprocating screw 22 to rotate through the quick-release coupling 24. Since the reciprocating nut 23 can only move up and down and cannot rotate under the guidance of the lifting guide assembly 6, the reciprocating nut 23 will move up and down back and forth when the reciprocating screw 22 rotates. When the reciprocating nut 23 descends, it will drive the guide seat 62 to descend along the guide rod 61 through the extension rod 63. Through the linkage of the linkage assembly 7, the sliding detection block 12 will slide toward the planetary carrier workpiece 13. The matching degree between the protrusion 121 and the planetary carrier workpiece 13 will be used to feedback whether there is an excessive deviation in the dimensional characteristics of the planetary carrier workpiece 13. Ideally, the protrusion 121 should be able to be inserted into the slot of the planetary carrier workpiece 13, and the gap between them should be reduced; otherwise, it means that there is a significant error in the size of the planetary carrier workpiece 13.

[0047] When the reciprocating nut 23 rises, the sliding detection block 12 will slide away from the planetary carrier workpiece 13 through the linkage of the connecting rod assembly 7, and the protrusion 121 will also separate from the groove of the planetary carrier workpiece 13. When the top block 31 contacts the expansion wedge 33, it first pushes the expansion wedge 33 outward through the frustum portion 311 until the expansion wedge 33 abuts against the inner wall of the planetary carrier workpiece 13, and then the top block 31 carries the planetary carrier workpiece 13 upward; after the planetary carrier workpiece 13 separates from the positioning pin 112, the coaxial retaining assembly 3 can keep the central axis position of the planetary carrier workpiece 13 unchanged.

[0048] When the upper surface of the planetary carrier workpiece 13 abuts against the contact plate 42, the rotating horizontal reversing component 4 will drive the coaxial retaining component 3 and the planetary carrier workpiece 13 to rotate slowly together. During this process, the horizontal turntable 41 will slide axially relative to the adjusting base 51 to maintain the contact state between the contact plate 42 and the planetary carrier workpiece 13. When the contact plate 42 and the planetary carrier workpiece 13 separate again, the planetary carrier workpiece 13 has rotated to the next inspection station.

[0049] Then the coaxial retaining assembly 3 and the planetary carrier workpiece 13 follow the reciprocating nut 23 down until the locating pin 112 and the planetary carrier workpiece 13 re-engage. Since the top of the locating pin 112 is provided with a guide ramp 113 with guiding and adjustment functions, even if there is a small angular error when the planetary carrier workpiece 13 descends, it can be adjusted to the correct angle.

[0050] By reciprocating the lifting and lowering of the reciprocating nut 23, the annularly distributed side groove features of the planetary carrier workpiece 13 can be inspected one by one.

[0051] The number of locating pins 112 is related to the number of side groove features of the planetary carrier workpiece 13, and the single rotation angle of the planetary carrier workpiece 13 is the interval angle of the side groove features.

[0052] When it is necessary to adjust the single rotation angle of the planetary carrier workpiece 13, it is only necessary to adjust the height of the base 51 relative to the input shaft 21 by adjusting the set screw. This changes the time that the planetary carrier workpiece 13 contacts the contact plate 42 during the lifting cycle, thereby adjusting the single rotation angle.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A planetary carrier outer contour inspection fixture, comprising a frame (8) and a gantry (81) mounted on the frame (8), characterized in that: It also includes a sliding fixture assembly (1), a lifting assembly (2), a coaxial holding assembly (3), a horizontal reversing assembly (4), a reversing adjustment assembly (5), a lifting guide assembly (6), and a connecting rod assembly (7). The sliding fixture assembly (1) is mounted on the frame (8), the lifting assembly (2) is mounted in the sliding fixture assembly (1), and the coaxial holding assembly (3) is mounted on the lifting assembly (2). The horizontal reversing assembly (4) is mounted on the coaxial holding assembly (3), the reversing adjustment assembly (5) is mounted on the lifting assembly (2), the horizontal reversing assembly (4) is located above the sliding fixture assembly (1), the lifting guide assembly (6) is located below the frame (8), and the connecting rod assembly (7) is located between the sliding fixture assembly (1) and the lifting guide assembly (6). The sliding fixture assembly (1) includes a fixture base (11), a sliding inspection block (12), and a planetary carrier workpiece (13). The fixture base (11) is mounted on the frame (8), the sliding inspection block (12) is slidably mounted on the fixture base (11), and the planetary carrier workpiece (13) is located on the fixture base (11).

2. The planetary carrier outer contour inspection fixture according to claim 1, characterized in that: The lifting assembly (2) includes an input shaft (21), a reciprocating screw (22), a reciprocating nut (23), and a quick-release coupling (24). The input shaft (21) is rotatably mounted in the gantry (81). The input shaft (21) and the reciprocating screw (22) are connected by the quick-release coupling (24). The reciprocating nut (23) and the reciprocating screw (22) are connected by a threaded drive.

3. The planetary carrier outer contour inspection fixture according to claim 2, characterized in that: The coaxial retaining assembly (3) includes a top block (31), an expansion bracket (32), and an expansion wedge (33). The top block (31) is rotatably disposed above the reciprocating nut (23). The top of the top block (31) is provided with a frustum portion (311). The expansion bracket (32) is located in the reciprocating lead screw (22). The expansion wedge (33) is engaged and slidably disposed in the expansion bracket (32). The frustum portion (311) and the expansion wedge (33) are in sliding contact.

4. The planetary carrier outer contour inspection fixture according to claim 3, characterized in that: The horizontal reversing assembly (4) includes a horizontal turntable (41) and a contact plate (42), the contact plate (42) being fixedly attached to the bottom of the horizontal turntable (41); the contact plate (42) can drive the planetary carrier workpiece (13) to rotate when it comes into contact with the planetary carrier workpiece (13).

5. The planetary carrier outer contour inspection fixture according to claim 4, characterized in that: The reversing adjustment assembly (5) includes an adjustment base (51) and a tension spring (52). The adjustment base (51) is provided with a set screw mounting hole (511). The adjustment base (51) is adjustable on the input shaft (21) by a set screw. The tension spring (52) is located between the adjustment base (51) and the horizontal turntable (41).

6. The planetary carrier outer contour inspection fixture according to claim 5, characterized in that: The adjusting base (51) is provided with slide bars (512) evenly distributed in a ring, and the horizontal turntable (41) is provided with slide grooves (411) corresponding to the slide bars (512) evenly distributed in a ring.

7. The planetary carrier outer contour inspection fixture according to claim 6, characterized in that: The lifting guide assembly (6) includes a guide rod (61), a guide seat (62), and an extension rod (63). The guide rod (61) is fixed to the bottom of the frame (8). The guide seat (62) is engaged and slidably disposed on the guide rod (61). The extension rod (63) is fixed to the bottom of the reciprocating nut (23) and is fixed in the guide seat (62).

8. The planetary carrier outer contour inspection fixture according to claim 7, characterized in that: The linkage assembly (7) includes a transverse slider (71), a hinge seat (72), and a hinge link (73). The transverse slider (71) is fixedly connected to the lower part of the sliding block (12). The hinge seat (72) is fixedly connected to the guide seat (62) and the transverse slider (71). The two ends of the hinge link (73) are hinged to the hinge seat (72).

9. The planetary carrier outer contour inspection fixture according to claim 8, characterized in that: The fixture base (11) is provided with a sliding groove (111), and the sliding inspection block (12) is engaged and slidably disposed in the sliding groove (111). The fixture base (11) is provided with locating pins (112) evenly distributed in a ring. The top of the locating pin (112) is provided with a guide ramp (113). The sliding inspection block (12) is provided with a protrusion (121). By comparing the matching degree between the protrusion (121) and the planetary carrier workpiece (13), it is possible to determine whether the dimensional characteristics of the planetary carrier workpiece (13) meet the requirements.

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