Aerospace motor shaft radial pin hole positioning device and machining process thereof

Abstract

The invention provides a spaceflight motor shaft radial pin hole positioning device and a machining process thereof. The spaceflight motor shaft radial pin hole positioning device comprises a fixed base, a V-shaped motor support, a positioning inclined block, a V-shaped shaft support, a lead screw shaft and a moving inclined block. The lead screw shaft is installed on the fixed base, the lead screw shaft penetrates through the moving inclined block with the top being an inclined face, the lead screw shaft is in transmission connection with the moving inclined block, the positioning inclined block is arranged on the top of the moving inclined block, and the moving inclined block is in transmission connection with the positioning inclined block. The V-shaped motor support is fixedly installed on the fixed base, and the V-shaped shaft support is installed on the top of the positioning inclined block. The geometric precision of the fixed base is fully utilized, and the machining position of the radial pin hole of the motor shaft can be supported and positioned through the precision of the V-shaped axis; redundant object protection in motor axial pin hole machining, damage of motor clamping force to the precision of the internal structure of the motor and damage of pin hole cutting force to the performance precision of the motor can be eliminated. Pin hole precision is controllable, and the deviation value of pin hole machining radial size consistency precision data is small.

Description

Technical Field

[0001] The present invention relates to the field of general assembly and general testing of aerospace vehicles, and specifically, to a radial pin hole positioning device for an aerospace motor shaft and its processing technology. Background Art

[0002] As a power output source, motors are widely used in mechanism products of aerospace vehicles. The spatial position between the motor shaft and the product needs to match the accuracy of the product itself. Due to the customized manufacturing mode of such products, there is an urgent need to solidify a set of pin hole positioning devices and processing technologies.

[0003] The existing Chinese patent with the publication number CN108544000A discloses a radial hole drilling fixture, which includes a positioning block and a drill sleeve. The bottom of the positioning block is V-shaped. It also includes a fixture body. The positioning block is installed on one side of the fixture body. A sleeve hole is opened on the positioning block, and the drill sleeve is installed in the sleeve hole. A pressing plate is provided below the positioning block. An eccentric clamping device is installed on the other side of the fixture body. The eccentric clamping device includes an eccentric wheel and an eccentric screw connected thereto. The eccentric screw passes through the fixture body and is connected to the pressing plate. A handle is connected to the top end of the eccentric screw.

[0004] The existing processing methods for radial position pin holes of conventional motor shafts or shafts of similar components are conventional methods such as using a flat-jaw vice in combination with a pressing plate and a spacer block. There are problems such as rigid deformation of the motor shaft caused by the clamping external force or the influence of the clamping external force on the internal installation accuracy of the motor, resulting in the influence on the accuracy and service life of the motor. At the same time, there is a problem that the cutting debris in the pin hole processing contaminates the inside of the motor and changes the performance of the motor.

[0005] Therefore, it is necessary to provide a radial pin hole positioning device for an aerospace motor shaft, which can realize the determination and fixation of the motor position, can realize the isolation of the machining cutting debris from the motor, and can eliminate the protection of debris in the axial pin hole machining of the aerospace motor, the damage of the motor clamping force to the internal structure accuracy of the motor, and the damage of the pin hole cutting force to the motor performance accuracy. Summary of the Invention

[0006] Aiming at the defects in the prior art, the purpose of the present invention is to provide a radial pin hole positioning device for an aerospace motor shaft and its processing technology.

[0007] According to a radial pin hole positioning device for an aerospace motor shaft provided by the present invention, it includes: a fixed base, a V-shaped motor support, a positioning inclined block, a V-shaped shaft support, a lead screw shaft, and a moving inclined block;

[0008] The fixed base is rectangular. Taking the short side of the fixed base as the X-axis, the long side of the fixed base as the Y-axis, and the vertical direction as the Z-axis, a spatial rectangular coordinate system is established;

[0009] The lead screw shaft is installed on a fixed base with its central axis arranged along the X-axis direction. The lead screw shaft passes through a moving inclined block with an inclined top surface. The lead screw shaft is in driving connection with the moving inclined block, and the moving inclined block can move along the X-axis direction. The positioning inclined block is arranged on the top of the moving inclined block, and the moving inclined block is in driving connection with the positioning inclined block, and the positioning inclined block can move along the Z-axis direction;

[0010] The V-shaped motor support is firmly installed on the fixed base. The V-shaped shaft support is installed on the top of the positioning inclined block. The V-shaped grooves of both the V-shaped motor support and the V-shaped shaft support are arranged along the Y-axis direction. The horizontally arranged aerospace motor is fixed on the V-shaped groove of the V-shaped motor support, and the motor output shaft of the aerospace motor is fixed on the V-shaped groove of the V-shaped shaft support.

[0011] Preferably, the center line of the fixed base and the center lines of the V-shaped grooves of both the V-shaped shaft support and the V-shaped motor support are located in the same vertical plane.

[0012] Preferably, first mounting side plates and second mounting side plates are symmetrically installed on both sides of the fixed base. Both ends of the lead screw shaft respectively pass through the first mounting side plate and the second mounting side plate and extend to the outside of the fixed base. A rotating handle is installed at one end or both ends of the lead screw shaft, and the lead screw shaft can rotate around its axial direction.

[0013] Preferably, the bottom of the moving inclined block is flat and placed on the fixed base. The moving inclined block is provided with a through hole along the X-axis direction. The outer surface of the lead screw shaft and the inner surface of the through hole of the moving inclined block are provided with mutually matching threads, and the moving inclined block is driven by the lead screw shaft to move along the X-axis direction.

[0014] Preferably, the bottom of the positioning inclined block is inclined, and the inclination degrees of the inclined surfaces of both the positioning inclined block and the moving inclined block are the same. The bottom surface of the positioning inclined block is attached to the top surface of the moving inclined block, and both side surfaces of the positioning inclined block are respectively abutted against the first mounting side plate and the second mounting side plate. When the positioning inclined block moves to the highest position, the positioning inclined block is not separated from both the first mounting side plate and the second mounting side plate.

[0015] Preferably, the top of the positioning inclined block is flat. The V-shaped shaft support is firmly installed on the top of the positioning inclined block. A V-shaped shaft pressing plate is installed on the top of the motor output shaft. The lower surface of the V-shaped shaft pressing plate is provided with a V-shaped groove matching the V-shaped shaft support, and the V-shaped shaft pressing plate is firmly connected to the V-shaped shaft support to clamp the motor output shaft.

[0016] Preferably, a V-shaped motor pressing plate is installed on the top of the aerospace motor. The middle part of the V-shaped motor pressing plate protrudes upward, and the V-shaped motor pressing plate is firmly connected to the V-shaped motor support to clamp the aerospace motor.

[0017] Preferably, one or more backing plates are placed in the V-groove of the V-shaped motor support.

[0018] Preferably, a foreign object baffle is provided on the fixed base.

[0019] According to a positioning and machining process for radial pin holes of an aerospace motor shaft provided by the present invention, using the above-mentioned positioning device for radial pin holes of an aerospace motor shaft, the following steps are included:

[0020] Step S1: Clean the fixed base and fix it to the pin hole machining equipment, and determine the outer dimension of the fixed base and the coordinate position dimension of the pin hole machining equipment.

[0021] Step S2: Install the aerospace motor on the V-shaped motor support and determine the position accuracy of the aerospace motor in the X, Y, and Z directions.

[0022] Step S3: The lead screw shaft drives the moving wedge to move, driving the positioning wedge to move to adjust the relative position of the V-shaped shaft support in the X direction, and fixing the motor output shaft through the V-shaped shaft pressing plate.

[0023] Step S4: Determine the position of the pin hole on the motor output shaft according to the outer dimension of the fixed base and machine the pin hole.

[0024] Step S5: Clean the pin hole and measure the machining accuracy of the pin hole. After passing the inspection, take out the aerospace motor.

[0025] Step S6: Clean the positioning device for radial pin holes of the aerospace motor shaft.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] By making full use of the geometric accuracy of the fixed base itself, the present invention can realize the support and positioning of the machining position of the radial pin hole of the motor shaft through the V-shaped axis accuracy between the positioning wedge, the V-shaped shaft support and the V-shaped motor support; the lead screw shaft drives the moving wedge to realize the radial support of the motor shaft, thereby eliminating the cutting force generated during the machining process; by using a foreign object baffle, it effectively eliminates the protection of foreign objects during the machining of the axial pin hole of the aerospace motor, the damage to the internal structure accuracy of the motor caused by the clamping force of the motor, and the damage to the performance accuracy of the motor caused by the cutting force of the pin hole; the structure is simple, the operation is convenient, it can be disassembled and assembled efficiently, and the pin hole accuracy is controllable. The deviation value of the consistency accuracy data of the radial dimension of the pin hole machining of the products in the same batch is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:

[0029] Figure 1 It is a schematic structural diagram mainly showing the positioning device for radial pin holes of an aerospace motor shaft of the present invention;

[0030] Figure 2 This is a schematic structural diagram mainly showing the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0031] Figure 3 This is a schematic structural diagram mainly showing the fixed base of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0032] Figure 4 This is a schematic structural diagram mainly showing the V-shaped motor support structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0033] Figure 5 This is a schematic structural diagram mainly showing the V-shaped motor pressing plate structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0034] Figure 6 This is a schematic structural diagram mainly showing the installation side plate structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0035] Figure 7 This is a schematic structural diagram mainly showing the positioning inclined block structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0036] Figure 8 This is a schematic structural diagram mainly showing the V-shaped motor pressing plate structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0037] Figure 9 This is a schematic structural diagram mainly showing the V-shaped shaft support structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0038] Figure 10 This is a schematic structural diagram mainly showing the lead screw shaft structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention;

[0039] Figure 11 This is a schematic structural diagram mainly showing the moving inclined block structure of the axial and radial pin hole positioning device of the aerospace motor shaft in the present invention.

[0040] As shown in the figure:

[0041] Specific embodiments

[0042] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all fall within the protection scope of the present invention.

[0043] Embodiment 1

[0044] As shown Figures 1-11 in the figure, a positioning device for the radial pin holes of a space motor shaft according to the present invention includes: a fixed base 1, a V-shaped motor support 2, a positioning inclined block 7, a V-shaped shaft support 9, a lead screw shaft 11, and a moving inclined block 12; the fixed base 1 is rectangular, taking the short side of the fixed base 1 as the X-axis, the long side of the fixed base 1 as the Y-axis, and the vertical direction as the Z-axis to establish a space rectangular coordinate system; the lead screw shaft 11 is installed on the fixed base 1 and its central axis is arranged along the X-axis direction, the lead screw shaft 11 passes through the moving inclined block 12 with a beveled top, the lead screw shaft 11 is in driving connection with the moving inclined block 12, and the moving inclined block 12 can move along the X-axis direction, the positioning inclined block 7 is arranged on the top of the moving inclined block 12, the moving inclined block 12 is in driving connection with the positioning inclined block 7, and the positioning inclined block 7 can move along the Z-axis direction; the V-shaped motor support 2 is firmly installed on the fixed base 1, the V-shaped shaft support 9 is installed on the top of the positioning inclined block 7, the V-shaped grooves of both the V-shaped motor support 2 and the V-shaped shaft support 9 are arranged along the Y-axis direction, the horizontally arranged space motor 3 is fixed on the V-shaped groove of the V-shaped motor support 2, and the motor output shaft of the space motor 3 is fixed on the V-shaped groove of the V-shaped shaft support 9.

[0045] This application can solve the problems that the spatial position of the motor shaft and the product needs to match the accuracy of the product itself, while eliminating the damage caused by the clamping force to the motor shaft and the single machine, and preventing the problem of foreign object pollution.

[0046] The center line of the fixed base 1 and the center lines of the V-shaped grooves of both the V-shaped shaft support 9 and the V-shaped motor support 2 are located in the same vertical plane, and the Y-direction and Z-direction position accuracies of the motor output shaft of the space motor 3 can be determined through the geometric parameters of the fixed base 1 itself.

[0047] The fixed base 1 is only fixedly connected to the cutting equipment, and a conventional pressing plate method can be used to achieve rigid connection. The external dimensions of the fixed base 1 provide a dimensional reference for the overall use, and the external accuracy is only used to determine the relative installation position of the space motor 3. The first installation side plate 5 and the second installation side plate 10 are symmetrically installed on both sides of the fixed base 1. The two ends of the lead screw shaft 11 respectively pass through the first installation side plate 5 and the second installation side plate 10 and extend to the outside of the fixed base 1. One end or both ends of the lead screw shaft 11 are installed with a rotating handle 6, and the lead screw shaft 11 can rotate around its axial direction.

[0048] The bottom of the moving inclined block 12 is flat and placed on the fixed base 1. The moving inclined block 12 is provided with a through hole along the X-axis direction. The outer surface of the lead screw shaft 11 and the inner surface of the through hole of the moving inclined block 12 are provided with mutually matching threads, and the moving inclined block 12 is driven by the lead screw shaft 11 to move along the X-axis direction.

[0049] The bottom of the positioning inclined block 7 is beveled, and the inclination degrees of the bevels of the positioning inclined block 7 and the moving inclined block 12 are the same. The bottom surface of the positioning inclined block 7 is arranged in contact with the top surface of the moving inclined block 12. The two side surfaces of the positioning inclined block 7 are respectively abutted against the first mounting side plate 5 and the second mounting side plate 10. When the positioning inclined block 7 moves to the highest position, the positioning inclined block 7 is not separated from the first mounting side plate 5 and the second mounting side plate 10. The two mounting side plates can finely adjust the perpendicularity of the axis of the lead screw shaft 11 to the side of the fixed base 1 to ensure flexible movement between the moving inclined block 12 and the fixed base 1. The driving lead screw shaft 11 can change the Z-direction position of the moving inclined block 12 relative to the positioning inclined block 7 and change the X-direction position dimension of the positioning inclined block 12, so as to realize the X-direction support of the motor output shaft and eliminate the cutting force generated by machining.

[0050] The top of the positioning inclined block 7 is flat. The V-axis support 9 is fixedly installed on the top of the positioning inclined block 7. The top of the motor output shaft is equipped with a V-axis pressing plate 8. The lower surface of the V-axis pressing plate 8 is provided with a V-shaped groove matching the V-axis support 9. The V-axis pressing plate 8 and the V-axis support 9 are fixedly connected to clamp the motor output shaft.

[0051] The top of the aerospace motor 3 is equipped with a V-shaped motor pressing plate 4. The middle part of the V-shaped motor pressing plate 4 protrudes upward. The V-shaped motor pressing plate 4 and the V-shaped motor support 2 are fixedly connected to clamp the aerospace motor 3. The spatial position axes of the V-axis support 9, the V-axis pressing plate 8, the V-shaped motor support 2, and the V-shaped motor pressing plate 4 are the same, which are only used for positioning and fixing the aerospace motor 3 and the motor shaft. The V-axis support 9 and the V-shaped motor support 2 can effectively support the motor shaft radially with a certain stiffness and axially position the motor and the motor shaft. The V-axis pressing plate 8 and the V-shaped motor pressing plate 4 are connected to the V-axis support 9 and the V-shaped motor support 2 by screws, which can realize the rapid positioning and simple disassembly of the motor.

[0052] One or more pads are placed in the V-shaped groove of the V-shaped motor support 2.

[0053] A foreign object baffle is arranged on the fixed base 1. The foreign object baffle can isolate the space between the machining position and the bearing of the motor shaft. The foreign object baffle is installed between the V-axis support 9 and the motor output shaft, which can effectively prevent mechanical cutting machining foreign objects from entering the motor and damaging the motor performance.

[0054] The materials of the fixed base 1, the moving inclined block 12, and the positioning inclined block 7 are 0Cr17, and after solution treatment, they are age-hardened to HRC40 - 45. The materials of the V-axis support 9, the V-axis pressing plate 8, the V-type motor pressing plate 4, the accessory backing plate, and the foreign object baffle are PA66 (nylon). The materials of the mounting side plates, the lead screw shaft 11, the rotating handle 6, and the V-type motor support 2 are 0Cr17, and after solution treatment, they are age-hardened to HRC28 - 32. The surfaces of the parts of the fixed base 1, the moving inclined block 12, the positioning inclined block 7, and the lead screw shaft 11 that participate in the contact movement are sputtered with a MoS2 multi-layer composite film, and the required film thickness is 1 - 2 μm (PVD solid lubricating film). For the moving contact parts of the fixed base 1, the moving inclined block 12, and the positioning inclined block 7, before sputtering the multi-layer composite film, the movement smoothness, stability, and service life can be increased by scraping and other methods. In other specific embodiments, the materials of the V-axis support 9, the V-axis pressing plate 8, the V-type motor pressing plate 4, the backing plate, and the foreign object baffle can also adopt the solutions of PTFE (polytetrafluoroethylene) and MDF (bakelite).

[0055] Furthermore, the outer dimension position of the fixed base 1 is the benchmark for the position accuracy of the product clamping space. The mounting side plates are paired in pairs and need to be processed by one-time clamping and combination. The device of the present application can be used to observe and clean the foreign objects generated during the machining process of the mechanical cutting equipment in the X direction and on both sides. The X direction can be used to add a small amount of coolant to improve the cutting performance and reduce the cutting heat.

[0056] The diameter range of the motor shaft targeted by the present application is to The diameter of the motor housing is to The diameter of the machined housing and the diameter of the motor shaft When they are in a certain situation, the accessory backing plate is not required. When machining motors with other diameters, it is necessary to adjust the Z-direction dimension of the V-groove of the V-type motor support 2 by using backing plates of different sizes. For motors with diameters exceeding the design size, it is necessary to adjust the dimensions of multiple parts such as the V-type motor support 2 and the V-axis support 9.

[0057] The present application effectively eliminates the protection of foreign objects in the axial pin hole machining of the aerospace motor 3, the damage to the internal structure accuracy of the motor caused by the clamping force of the motor, and the damage to the motor performance accuracy caused by the cutting force of the pin hole; realizes the effective management of the clamping force, machining cutting force, and cutting machining foreign objects during the machining process of the motor shaft pin hole; realizes efficient disassembly and assembly, and the machining process of the radial pin hole of the motor shaft realizes controllable pin hole accuracy.

[0058] This application can solve the problem of the need to match the spatial position of the motor shaft and the product with the accuracy of the product itself, while eliminating the damage caused by clamping force to the motor shaft and the single machine, preventing the problem of foreign object pollution, and achieving efficient disassembly and assembly. By making full use of the geometric accuracy of the fixed base 1, the V-axis accuracy between the positioning inclined block 7, the V-axis support 9 and the V-shaped motor support 2 can support the machining position of the radial pin hole of the motor shaft; the lead screw shaft 11 drives the moving inclined block 12 to achieve radial support for the motor shaft, thereby eliminating the cutting force generated during the machining process; realizing that the deviation value of the radial dimension consistency accuracy data of the pin hole machining of the same batch of products is less than 0.03 mm, effectively avoiding damage to the performance of the motor caused by various uncertain torques and cutting foreign objects generated by mechanical machining.

[0059] Embodiment 2

[0060] Based on Embodiment 1, a radial pin hole positioning and machining process for an aerospace motor shaft provided by the present invention includes the following steps:

[0061] Step 1: After cleaning the contact surface between the fixed base 1 and the pin hole machining equipment, use a pressing plate to fasten and connect, determine the outer dimension of the fixed base 1 and the coordinate position dimension of the pin hole machining equipment, and a micrometer can be used to determine the accuracy of the coordinate position dimension;

[0062] Step 2: Clean the V-shaped motor support 2 and the V-shaped motor pressing plate 4, install the foreign object baffle on the motor output shaft, form a relative physical isolation between the machining position of the motor shaft pin hole and the output end face of the motor shaft. After ensuring that the side of the foreign object baffle fits with the end of the motor output shaft, protect the motor cable and then install it on the V-shaped motor support 2. Rotate the motor housing slightly left and right to confirm that the contact between the motor housing and the V-shaped motor support 2 is stable and effective. Utilize the V-shaped positioning principle of the V-shaped motor support 2 and the V-axis support 9 to determine the position accuracy of the motor in the X, Y, and Z directions, and fix the motor weakly rigidly through the V-shaped motor pressing plate 4;

[0063] Step 3: Drive the lead screw shaft 11 by rotating the handle 6 to change the Z-direction position of the moving inclined block 12 relative to the positioning inclined block 7, and change the X-direction position dimension of the positioning inclined block 7 to achieve X-direction support for the motor shaft, thereby eliminating the cutting force generated during machining. Rigidly fix the motor shaft through the V-axis pressing plate 8; the relative position of the V-axis support 9 in the X direction can be used to determine the force condition of the motor shaft in the X direction with a 0.02 mm feeler gauge and a micrometer, and fix the position of the motor shaft with the V-axis pressing plate 8;

[0064] Step 4: Determine the position of the motor shaft pin hole according to the outer dimensions of the fixed base 1. After pre-drilling a center positioning hole on the motor shaft with a φ1 center drill, then machine the corresponding bottom hole according to the technical requirements, and ream the corresponding pin hole with a reamer of corresponding H7 precision. A small amount of coolant (the coolant is configured with carbon tetrachloride and kerosene in a ratio of 1:1) is used during the machining process, and a dust suction device is used to remove the excess cutting debris. After finishing the reaming, a chamfering tool is used to remove the burrs at the hole opening;

[0065] Step 5: After cleaning the machining position with a dust suction device, a brush, lint-free cloth, and anhydrous alcohol, use a measuring mandrel to check the machining accuracy of the pin hole. After passing the inspection, remove the corresponding device and take out the motor, take out the excess debris baffle, and clean the motor shaft again to remove the cable protection;

[0066] Step 6: Clean the positioning device for the radial pin hole of the aerospace motor shaft, apply a small amount of type 701 clock oil at the outer dimension reference of the fixed base 1, and wrap the positioning device for the radial pin hole of the aerospace motor shaft with oil paper as a whole.

[0067] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0068] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A radial pin hole positioning device for an aerospace motor shaft, characterized in that: include: A fixed base (1), a V-shaped motor support (2), a positioning bevel block (7), a V-shaped shaft support (9), a lead screw shaft (11) and a moving bevel block (12); The fixed base (1) is rectangular, and a spatial rectangular coordinate system is established with the short side of the fixed base (1) as the X-axis, the long side of the fixed base (1) as the Y-axis, and the vertical direction as the Z-axis; The screw shaft (11) is mounted on a fixed base (1) and its central axis is arranged along the X-axis direction; the screw shaft (11) passes through a moving inclined block (12) with an inclined top; the screw shaft (11) is transmission-connected to the moving inclined block (12); the moving inclined block (12) is movable along the X-axis direction; the positioning inclined block (7) is arranged on the top of the moving inclined block (12); the moving inclined block (12) is transmission-connected to the positioning inclined block (7); the positioning inclined block (7) is movable along the Z-axis direction; The V-shaped motor support (2) is fixedly mounted on the fixed base (1), the V-shaped shaft support (9) is mounted on the top of the positioning inclined block (7), the V-shaped grooves of the V-shaped motor support (2) and the V-shaped shaft support (9) are both arranged along the Y-axis direction, the horizontally arranged aerospace motor (3) is fixed on the V-shaped groove of the V-shaped motor support (2), and the motor output shaft of the aerospace motor (3) is fixed on the V-shaped groove of the V-shaped shaft support (9).

2. The aerospace motor shaft radial pin hole positioning device according to claim 1, characterized in that: The center line of the fixed base (1) and the center lines of the V-shaped grooves of the V-shaped shaft support (9) and the V-shaped motor support (2) are located on the same vertical plane.

3. The aerospace motor shaft radial pin hole positioning device according to claim 1, characterized in that: A first mounting side plate (5) and a second mounting side plate (10) are symmetrically mounted on both sides of the fixed base (1); two ends of the screw shaft (11) respectively pass through the first mounting side plate (5) and the second mounting side plate (10) and extend to the outside of the fixed base (1); a rotating handle (6) is mounted on one end or both ends of the screw shaft (11); and the screw shaft (11) is capable of rotating around its axial direction.

4. The aerospace motor shaft radial pin hole positioning device according to claim 3, characterized in that: The bottom of the moving inclined block (12) is flat and is placed on the fixed base (1); the moving inclined block (12) is provided with a through hole along the X-axis direction; the outer surface of the screw shaft (11) and the inner surface of the through hole of the moving inclined block (12) are provided with mutually matching threads; the moving inclined block (12) is driven by the screw shaft (11) to move along the X-axis direction.

5. The aerospace motor shaft radial pin hole positioning device according to claim 4, characterized in that: The bottom of the positioning inclined block (7) is an inclined surface, and the inclination degrees of the inclined surfaces of the positioning inclined block (7) and the moving inclined block (12) are consistent. The bottom surface of the positioning inclined block (7) and the top surface of the moving inclined block (12) are arranged in close contact with each other. The two side surfaces of the positioning inclined block (7) are respectively pressed against the first mounting side plate (5) and the second mounting side plate (10). When the positioning inclined block (7) moves to the highest point, the positioning inclined block (7) and the first mounting side plate (5) and the second mounting side plate (10) are not separated.

6. The aerospace motor shaft radial pin hole positioning device according to claim 1, characterized in that: The top of the positioning bevel block (7) is flat, the V-shaped shaft support (9) is fixedly mounted on the top of the positioning bevel block (7), a V-shaped shaft pressure plate (8) is mounted on the top of the motor output shaft, a V-shaped groove matching the V-shaped shaft support (9) is provided on the lower surface of the V-shaped shaft pressure plate (8), and the V-shaped shaft pressure plate (8) is fixedly connected to the V-shaped shaft support (9) to clamp the motor output shaft.

7. The aerospace motor shaft radial pin hole positioning device according to claim 1, characterized in that: A V-shaped motor pressure plate (4) is installed on the top of the aerospace motor (3), the middle part of the V-shaped motor pressure plate (4) protrudes upward, and the V-shaped motor pressure plate (4) is tightly connected to the V-shaped motor support (2) to press the aerospace motor (3).

8. The aerospace motor shaft radial pin hole positioning device according to claim 1, characterized in that: One or more pads are placed in the V-shaped groove of the V-shaped motor support (2).

9. The aerospace motor shaft radial pin hole positioning device according to claim 1, characterized in that: The fixed base (1) is provided with a surplus object baffle.

10. A radial pin hole positioning process for an aerospace motor shaft, characterized in that: The aerospace motor shaft radial pin hole positioning device according to any one of claims 1 to 9 comprises the following steps: Step S1, cleaning the fixed base (1) and fixing it to the pin hole processing equipment, and determining the outer dimensions of the fixed base (1) and the coordinate position dimensions of the pin hole processing equipment; Step S2, installing the aerospace motor (3) on the V-shaped motor support (2), and determining the position accuracy of the aerospace motor (3) in the X direction, the Y direction, and the Z direction; Step S3, the lead screw shaft (11) drives the moving inclined block (12) to move, driving the positioning inclined block (7) to move and adjust the relative position of the V-shaped shaft support (9) in the X direction, and fixes the motor output shaft through the V-shaped shaft pressure plate (8); Step S4, determining the position of the pin hole of the motor output shaft according to the outer dimensions of the fixed base (1), and machining the pin hole; Step S5, cleaning the pin hole and measuring the pin hole machining accuracy, and taking out the aerospace motor (3) after passing the test; Step S6, cleaning the radial pin hole positioning device of the aerospace motor shaft.

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