Special butt joint detection tool for spaceflight servo mechanism
By designing a special docking and testing fixture for aerospace servo mechanisms, the problems of complex testing processes and inability to guarantee positional accuracy in existing technologies have been solved. This has enabled efficient and accurate testing, ensuring product precision and consistency and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-04
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, the operation process of using a coordinate measuring machine to inspect aerospace servo mechanisms is complicated, requiring the use of tooling to clamp components, which affects the inspection results and the positional accuracy cannot be guaranteed, leading to unsuccessful docking and affecting the batch production schedule.
Design a special docking inspection tool for aerospace servo mechanisms, including a docking inspection plate, an inspection mandrel, and positioning pins. Through the precise design of the docking inspection plate and the docking base of the servo mechanism, ensure that the accuracy and position of the pin holes and waist holes meet the requirements. Efficient inspection can be achieved by using a standard inspection mandrel.
It improves the accuracy of docking and the convenience of inspection, meets precision requirements, reduces site and equipment limitations, is suitable for parts manufacturing and overall delivery, ensures product consistency and reliability, and improves production efficiency.
Smart Images
Figure CN224095129U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to detection frock technical field, concretely is a kind of butt joint detection frock special for aerospace servo mechanism. BACKGROUND
[0002] Certain model aerospace servo mechanism has the characteristics of assembly precision, high sensitivity, servo mechanism and whole machine are butt joint through φ3H7 pin hole, 3H7 waist hole, require reliable butt joint.
[0003] Prior art scheme is, before butt joint, servo mechanism pin hole size is detected using three coordinate measuring instruments, using three coordinate measuring instruments to detect operation process is relatively complex, need to use frock clamping component, the frequency and method of point taking can also affect detection result, the key is that position degree cannot be guaranteed, even if detection is completed, still cannot guarantee certain butt joint success, affect batch production schedule.
[0004] In view of above problem, we carry out innovative design on the basis of original aerospace servo mechanism special butt joint detection frock structure. INVENTION CONTENTS
[0005] The utility model aims at providing a kind of butt joint detection frock special for aerospace servo mechanism, to solve the problem that the operation process is relatively complex using three coordinate measuring instruments for detection in the above background art, need to use frock clamping component, the frequency and method of point taking can also affect detection result, the key is that position degree cannot be guaranteed, even if detection is completed, still cannot guarantee certain butt joint success, affect batch production schedule.
[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of butt joint detection frock special for aerospace servo mechanism, including butt joint detection plate, first detection mandrel, second detection mandrel, positioning pin, the butt joint detection plate outside is provided with servo mechanism butt joint base, and positioning pin is fixedly installed in butt joint detection plate outside inside, the butt joint detection plate and servo mechanism butt joint base inside are respectively provided with pin hole, and the butt joint detection plate and servo mechanism butt joint base inside are respectively provided with waist hole, first detection mandrel and second detection mandrel are inserted into pin hole inside, reference end face is set in the butt joint detection plate inside.
[0007] Preferably, the first detection mandrel is provided with four groups, and the second detection mandrel is provided with two groups.
[0008] Preferably, the pin hole is symmetrically arranged about the midpoint of the servo mechanism butt joint base.
[0009] Preferably, the parallelism between the two sides of the servo mechanism butt joint base and the center line of the two pin holes is less than 0.015 MM.
[0010] Preferably, the perpendicularity between the reference end face and the two sets of pin holes is less than 0.012 mm.
[0011] Compared with existing technologies, this invention aims to solve the problem of difficult docking between a certain aerospace servo mechanism and the overall product. It effectively improves the accuracy of docking, meeting the requirements of pin hole φ3H7, perpendicularity to the reference end face less than 0.012mm, waist hole 3H7, perpendicularity to A less than 0.012mm, and parallelism of the line connecting the centers of the two flat holes and the two pin holes less than 0.015mm. This makes it convenient to use, unrestricted by site or equipment, and allows for testing anytime, anywhere. During testing, inserting a standard testing mandrel ensures the tooling meets the requirements. It is applicable to parts manufacturing and overall delivery. The beneficial effects of this invention are:
[0012] Three sets of this docking fixture are manufactured simultaneously. One set is used during parts production to inspect the accuracy, position, and perpendicularity of the φ3H7 and 3H7 waist holes on the servo mechanism docking base; one set is used for inspection during the finished product inspection of the servo mechanism at our company; and one set is used for inspection during the incoming inspection of the servo mechanism at a certain institute. In this way, from parts manufacturing to the servo mechanism leaving the factory, and until the product is fully docked at a certain institute, the accuracy of the pin holes and related screw holes and their positions is guaranteed, ensuring product consistency and reliability during overall docking. This not only facilitates the control of inspection accuracy but also improves efficiency, laying the foundation for batch production.
[0013] This tooling is easy to process and manufacture, with a short manufacturing cycle. It can easily realize the detection function of the accuracy and position of the mating holes, which is efficient and reliable; it is very conducive to the successful delivery of products and the realization of batch production. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0015] Figure 2 This is a front view structural diagram of the docking detection plate of this utility model;
[0016] Figure 3 This is a side view of the docking detection plate of this utility model.
[0017] Figure 4 This is a schematic diagram of the docking structure between the docking detection plate and the servo mechanism docking base of this utility model;
[0018] Figure 5 This is a three-dimensional structural diagram of the detection mandrel of this utility model;
[0019] Figure 6 This is a three-dimensional structural diagram of the positioning pin of this utility model.
[0020] In the diagram: 1. Docking detection plate; 2. First detection mandrel; 3. Second detection mandrel; 4. Positioning pin; 5. Servo mechanism docking base; 6. Pin hole; 7. Waist hole; 8. Reference end face. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figures 1-6 This utility model provides a technical solution: a special docking and testing fixture for aerospace servo mechanisms, comprising: a docking and testing plate 1, a first testing mandrel 2, a second testing mandrel 3, and a positioning pin 4. A servo mechanism docking base 5 is provided on the outer side of the docking and testing plate 1, and a positioning pin 4 is fixedly installed on the inner side of the outer side of the docking and testing plate 1. Pin holes 6 are respectively opened on the inner side of the docking and testing plate 1 and the servo mechanism docking base 5, and waist holes 7 are respectively opened on the inner side of the docking and testing plate 1 and the servo mechanism docking base 5. The first testing mandrel 2 and the second testing mandrel 3 are inserted into the inner side of the pin holes 6, and a reference end face 8 is opened on the inner side of the docking and testing plate 1.
[0023] The first detection spindle 2 is provided with four sets, and the second detection spindle 3 is provided with two sets; the pin holes 6 are symmetrically arranged about the center point of the servo mechanism docking base 5; the parallelism between the center line connecting the two sides of the servo mechanism docking base 5 and the center of the two sets of pin holes 6 is less than 0.015MM; the perpendicularity between the reference end face 8 and the two sets of pin holes 6 is less than 0.012MM.
[0024] Working principle: Place the servo mechanism docking base 5 on the testing table of the docking inspection plate 1, align it with the direction of the docking pin hole 6, and insert the first inspection mandrel 2 and the second inspection mandrel 3 for positioning. Then, use a φ3 standard inspection mandrel to insert into the φ3H7 pin hole 6 and the 3H7 waist hole 7. When the φ3 standard inspection mandrel can be smoothly inserted into the φ3H7 pin hole 6 and the 3H7 waist hole 7, it can be determined that the dimensional accuracy and positional accuracy of the φ3H7 pin hole 6 and the 3H7 waist hole 7 meet the requirements, and at the same time, the parallelism of the line connecting the two flat surfaces and the two pin holes 6 is less than 0. Requirements include a minimum diameter of 0.015mm and a minimum perpendicularity of 0.012mm between the two pin holes 6 and the reference end face 8. This fixture ensures that the accuracy and positional accuracy of the holes can be detected using a standard inspection mandrel on the same positioning reference. Requirements include a minimum parallelism of 0.015mm between the two flat surfaces and the two pin holes 6, and a minimum perpendicularity of 0.012mm between the two pin holes 6 and the reference end face 8. This fixture is easy to manufacture, has a short manufacturing cycle, and can conveniently realize the detection function of the accuracy and position of the mating holes. It is efficient, reliable, and highly conducive to successful product delivery and batch production.
[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A special docking inspection fixture for aerospace servo mechanisms, comprising a docking inspection plate (1), a first inspection mandrel (2), a second inspection mandrel (3), and positioning pins (4), characterized in that, The docking detection plate (1) is provided with a servo mechanism docking base (5) on its outer side, and a positioning pin (4) is fixedly installed on the inner side of the outer side of the docking detection plate (1). The docking detection plate (1) and the servo mechanism docking base (5) are respectively provided with pin holes (6), and the docking detection plate (1) and the servo mechanism docking base (5) are respectively provided with waist holes (7). The first detection mandrel (2) and the second detection mandrel (3) are inserted into the inner side of the pin hole (6). The docking detection plate (1) is provided with a reference end face (8).
2. The special docking and testing fixture for aerospace servo mechanisms according to claim 1, characterized in that: The first detection mandrel (2) is provided in four sets, and the second detection mandrel (3) is provided in two sets.
3. The special docking and testing fixture for aerospace servo mechanisms according to claim 1, characterized in that: The pin hole (6) is symmetrically arranged about the midpoint of the servo mechanism docking base (5).
4. The special docking and testing fixture for aerospace servo mechanisms according to claim 1, characterized in that: The parallelism between the center lines connecting the two sides of the servo mechanism docking base (5) and the center lines of the two sets of pin holes (6) is less than 0.015 mm.
5. The special docking and testing fixture for aerospace servo mechanisms according to claim 1, characterized in that: The perpendicularity between the reference end face (8) and the two sets of pin holes (6) is less than 0.012 mm.