Aircraft brake disc steel clip, machining die and machining method
By designing an arched steel clamp and processing mold for one-time stamping, the protection and precision issues of carbon composite brake discs were solved, improving production efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIAN DAPENG AVIATION TECH CO LTD
- Filing Date
- 2023-10-31
- Publication Date
- 2026-05-19
AI Technical Summary
In the existing technology, the keyway strength of carbon composite brake discs is reduced, the steel clamps have high dimensional accuracy requirements and low production efficiency, resulting in high costs. Furthermore, traditional processing methods cannot meet the contradiction between accuracy requirements and efficient production.
Design a steel clamp for aircraft brake discs, which adopts an arched part and a connecting part integrally formed, and uses a processing mold for one-time stamping to ensure the accuracy and strength of the steel clamp, while reducing weight.
This achieves effective protection of the brake disc, improves production efficiency, reduces production costs, and ensures the dimensional accuracy and strength of the steel clamp.
Smart Images
Figure CN117307631B_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of aircraft brake technology, and in particular relates to an aircraft brake disc steel clamp, a processing mold and a processing method. Background Technology
[0002] Currently, during the use of carbon composite brake discs, with the cumulative number of uses and the oxidation of the discs, the strength of the keyways decreases, and the keyways gradually widen, adversely affecting their use. To protect the keyways of the inner ring of the carbon composite brake disc, steel clips need to be installed on the inner ring for protection. Currently, a single steel clip is used to hold the brake disc on the side for protection. However, if the steel clip is too narrow, the protective effect on the brake disc is unstable; if the steel clip is too wide, the weight of the clip will increase, making it unsuitable for use in aircraft.
[0003] Meanwhile, because the steel clamps used on aircraft moving brake discs have very high dimensional accuracy requirements and must fit tightly to the moving brake discs after assembly, and because the moving brake discs are subjected to various complex loads and high temperatures during braking, the steel frame material on aircraft moving brake discs is a corrosion-resistant high-strength steel (which is not suitable for milling). Conventional aircraft moving brake discs are produced by machining in order to meet their accuracy requirements, that is, by milling a whole piece of material. Although this ensures the accuracy requirements of the steel clamps, the production efficiency is very low and the production cost is extremely high.
[0004] Application content
[0005] To solve the above-mentioned technical problems, this application provides a steel clip that can fully protect the aircraft brake disc, and also provides a steel clip processing mold and method that can ensure the accuracy of the steel clip while improving production efficiency and reducing production costs during the production of the steel clip.
[0006] To achieve the above objectives, this application employs the following technical solutions;
[0007] An aircraft brake disc steel clamp includes two symmetrically arranged arched portions fixedly connected to the side of the aircraft brake disc, and a connecting portion that fixes the tops of the two arched portions together.
[0008] Preferably, the two symmetrically arranged arched portions and the connecting portion are integrally formed by pressing steel plates using a processing mold.
[0009] Preferably, grooves are provided at the two sides of the connection between the arched part and the connecting part.
[0010] Preferably, the included angle between the arched portion and the connecting portion is between 135° and 145°, and the lower width of the arched portion is greater than the upper width.
[0011] A machining mold for an aircraft brake disc steel clamp includes a lower mounting base and an upper mounting base;
[0012] The lower molding mold base is fixedly installed on the upper end face of the lower mounting base;
[0013] A molding block is fixedly installed on the lower end face of the upper mounting base. A molding upper pressure plate is installed on the lower surface of the molding block, and a buffer device is provided between the molding upper pressure plate and the molding block.
[0014] The upper pressure plate of the forming mold is provided with two guide holes passing through the upper and lower end faces of the upper pressure plate of the forming mold, and the lower part of the two guide holes is close to the center of the two guide holes; the upper part of the forming mold pressure block is movably connected to two forming movable pressure blocks, and the two forming movable pressure blocks cooperate with the lower forming mold base to form a stamping cavity for a steel clamp for one-time stamping, and the two forming movable pressure blocks pass through the guide holes.
[0015] Preferably, the molding block has an elongated hole, and the upper end of the movable molding block passes through the elongated hole and connects to the molding block.
[0016] Preferably, the upper mounting base, the molding block, and the upper molding platen are fixedly connected by long bolts, and the end of the long bolt connecting the molding block and the upper molding platen is fitted with a first buffer spring.
[0017] Preferably, the buffer device is a second buffer spring, and the upper and lower ends of the second buffer spring are respectively located in the grooves on the connecting end faces of the molding die pressure block and the molding die upper pressure plate.
[0018] Preferably, the included angle between the two forming movable pressure blocks is 15°-25°.
[0019] A method for processing steel clamps for aircraft brake discs involves placing the workpiece to be processed onto the top end face of the lower forming mold base of the processing mold. A stamping machine drives the upper mounting base to descend. During the descent, the workpiece enters the positioning cylinder provided on the upper mounting base through the positioning rod provided on the lower mounting base to complete the positioning. After the upper mounting base continues to descend, the two forming movable pressure blocks contact the workpiece to be processed and press down. The workpiece enters the stamping cavity formed by the two forming movable pressure blocks and the lower forming mold base to complete one stamping, thus forming the steel clamp.
[0020] The beneficial effects of this application are:
[0021] 1. The steel clamp is located on the end face of the aircraft brake disc through two arched parts to effectively protect the brake disc. At the same time, it is connected by a connecting part to ensure the stability of the two steel clamps. This reduces the weight of the steel clamp while increasing the strength of the entire steel clamp.
[0022] 2. When preparing steel clips, the use of processing molds allows for one-time forming, and avoids rebound at the lower end of the arched part of the steel clip after forming. Compared with traditional milling, one-time stamping improves work efficiency and greatly reduces production costs. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the steel clamp in this application;
[0025] Figure 2 This is a side view of the steel clip structure of this application;
[0026] Figure 3 This is a schematic diagram of the processing mold in this application;
[0027] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure of the middle AA section;
[0028] Figure 5 This is an exploded view of the machining mold used in this application;
[0029] Figure 6 This is a schematic diagram of the structure of the part to be processed in this application. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0031] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0032] Example 1
[0033] like Figure 1As shown, an aircraft brake disc steel clip includes two symmetrically arranged arched portions 1 fixedly connected to the side of the aircraft brake disc, and a connecting portion 2 fixedly connecting the tops of the two arched portions 1 together. The two symmetrically arranged arched portions 1 and the connecting portion 2 are integrally formed by pressing steel plates through a processing mold. Specifically, the steel clip uses cold-rolled steel sheet, which is cut into the required shape according to design requirements. Then, the cut cold-rolled steel sheet is placed into a specially designed processing mold and integrally formed by pressing through the mold. Using cold-rolled steel sheet as the raw material for the steel clip results in better mechanical properties and strength than ordinary block materials. Furthermore, during use, such as... Figure 1 and Figure 2 As shown, the arched part is snapped onto the side of the brake disc groove to protect the brake disc. Specifically, two symmetrical arched parts are snapped onto the upper and lower sides of the brake disc groove respectively to strengthen the protection of the brake disc. At the same time, the two arched parts are connected by a connecting part, which reduces the weight of the steel clamp while ensuring rigidity and improving safety.
[0034] In another embodiment, grooves 3 are provided at the connection points on both sides of the arched portion 1 and the connecting portion 2. These grooves 3 are semi-circular. Providing grooves 3 at the connection points effectively prevents tearing and cracking of the arched portion 1 and the connecting portion 2 under stress. The included angle between the arched portion 1 and the connecting portion 2 is between 135° and 145°, preferably 140°, and the lower width of the arched portion 1 is greater than the upper width. This ensures that while increasing the contact area between the arched portion and the brake disc, the weight of the entire steel clamp does not increase. Specifically, during installation, the two arched portions 1 are fastened onto the brake disc, and then fixed to the brake disc by pins to protect the brake disc.
[0035] Example 2
[0036] like Figure 3 , Figure 4 and Figure 5 The mold shown is for processing aircraft brake disc steel clamps, including a lower mounting base 101 and an upper mounting base 102. The lower mounting base 101 and the upper mounting base 102 are fixedly mounted on a stamping machine. The drive end of the stamping machine drives the lower mounting base 101 / upper mounting base 102 to move up and down to perform the stamping operation. When designing the lower mounting base 101 and the upper mounting base 102, it is necessary to design according to the installation specifications of the stamping machine, which is a conventional method in this field. The specific parameters are not described in detail here.
[0037] The lower mounting base 101 is fixedly mounted with a lower forming mold base 103 on its upper end face; the lower forming mold base 103 is fixed to the lower mounting base 101 by long bolts.
[0038] A forming mold block 104 is fixedly installed on the lower end face of the upper mounting base 102. Specifically, the forming mold block 104 is fixedly installed to the upper mounting base 102 by bolts. A forming mold upper pressure plate 105 is installed on the lower surface of the forming mold block 104, and a buffer device is provided between the forming mold upper pressure plate 105 and the forming mold block 104. The buffer device can play a buffering role during stamping, and after stamping is completed, the forming mold upper pressure plate 105 and the forming mold block 104 can be separated and returned to the reset state.
[0039] The upper pressure plate 105 of the forming mold is provided with two guide holes 106 passing through the upper and lower end faces of the upper pressure plate 105 of the forming mold, and the lower part of the two guide holes 106 is close to the center of the two guide holes 106; the upper part of the forming mold pressure block 104 is movably connected to two forming movable pressure blocks 107, and the two forming movable pressure blocks 107 cooperate with the lower forming mold base 103 to form a stamping cavity for a steel clamp for one-time stamping, and the two forming movable pressure blocks 107 pass through the guide holes 106.
[0040] The cross section of the lower forming mold base 103 is as follows Figure 2 Similar to the side view of the steel clamp shown, the length of the lower forming die base 103 is equal to the length of the steel clamp, and the length of the forming movable pressure block 107 matches the length of the lower forming die base 103. During stamping, it will be as follows... Figure 6 The component to be processed is placed on the plane of the lower forming mold base 103. The press is then started, causing the lower mounting base 101 and the upper mounting base 102 to move relative to each other. When the upper pressure plate 105 of the forming mold contacts the lower forming mold base 103, the component to be processed is pressed between the upper pressure plate 105 and the lower forming mold base 103. Because a buffer device is provided between the upper pressure plate 105 and the forming mold pressure block 104, the forming mold pressure block 104 continues to drive the two movable forming pressure blocks 107 to continue moving downwards. At this time, the movable forming pressure blocks 107 move from the guide... The hole 106 protrudes and contacts the component to be processed, pressing down on the edge of the component to bend downwards, completing the stamping process; the two guide holes 106 are designed with a certain included angle to ensure that the forming movable pressure block 107 can form a certain angle during stamping. Specifically, during the forming process, the forming movable pressure block 107 will laterally press the steel clamp, causing the steel clamp to bend through a certain angle, thereby avoiding the material rebound affecting the dimensional accuracy of the product; after the forming is completed, the forming movable pressure block 107 is reset and disengaged from the steel clamp under the action of the buffer device, and the forming process of a steel clamp product is completed.
[0041] The steel clamp is formed in one step by the mold, which improves work efficiency and greatly reduces costs. At the same time, the forming movable pressure block 107 in the mold forms a certain angle during stamping, thereby avoiding the impact of material rebound on the dimensional accuracy of the product and improving the accuracy of the finished product.
[0042] In another embodiment, to ensure that the included angle between the two movable forming blocks 107 can be changed when the movable forming block 107 moves in the guide hole 106, an elongated hole 108 is provided on the forming die block 104. The upper end of the movable forming block 107 passes through the elongated hole 108 and is connected to the forming die block 104. Specifically, the movable forming block 107 is bolted to the elongated hole 108 to ensure that the movable forming block 107 can move along the elongated hole 108 to reach the angle required by the guide hole 106, thereby improving stamping efficiency.
[0043] In another embodiment, the upper mounting base 102, the molding die pressing block 104, and the molding die upper pressure plate 105 are fixedly connected by long bolts 109, and a first buffer spring 110 is sleeved on the end of the long bolt 109 connecting the molding die pressing block 104 and the molding die upper pressure plate 105; the buffer device is a second buffer spring 111, and the upper and lower ends of the second buffer spring 111 are respectively located in the grooves on the connecting end faces of the molding die pressing block 104 and the molding die upper pressure plate 105; the provision of the first buffer spring 110 and the second buffer spring 111 between the molding die pressing block 104 and the molding die upper pressure plate 105 can effectively ensure the molding die. When the pressure plate 105 contacts the lower forming mold base 103, the forming mold pressure block 104 drives the forming movable pressure block 107 to continue to move downward to complete the stamping. At the same time, during demolding, the compressed buffer spring needs to be reset, which drives the forming movable pressure block 107 into the guide hole. At this time, the stamped steel frame can separate from the stamping cavity of the steel clamp formed by the lower forming mold base 103 and the two forming movable pressure blocks 107, and quickly demold. At the same time, in order to ensure that the two forming movable pressure blocks 107 can recover with high precision when the steel clamp is bent through a certain angle, the included angle of the two forming movable pressure blocks 107 in this embodiment is 15°-25°.
[0044] In another embodiment, in order to ensure that the upper mounting base 102 and the lower mounting base 101 can be positioned during the stamping process, a vertically downward positioning cylinder 112 is fixed on the upper mounting base 102, and a vertically upward positioning rod 113 is provided on the lower mounting base 101. During stamping, the positioning rod 113 enters the positioning cylinder 112 to complete the positioning, which improves the stamping accuracy and effectively protects the entire mold.
[0045] Example 3
[0046] A method for machining aircraft brake disc steel clamps, which will... Figure 6 The workpiece to be processed is placed on the top end face of the lower forming mold base 103 of the processing mold. The stamping machine drives the upper mounting base 102 to descend. During the descent, the workpiece enters the positioning cylinder 112 on the upper mounting base 102 through the positioning rod 113 on the lower mounting base 101 to complete the positioning. When the upper pressure plate 105 of the forming mold contacts the lower forming mold base 103, the workpiece to be processed is pressed between the upper pressure plate 105 and the lower forming mold base 103. Since there is a buffer device between the upper pressure plate 105 and the forming mold pressure block 104, the forming mold pressure block 104 continues to drive the two forming movable pressure blocks 107 to continue to descend. The forming movable pressure blocks 107 pass through the guide hole 106 and contact the workpiece to be processed, pressing down the edge part of the workpiece to be processed and bending it downward, completing one stamping, and making it as shown. Figure 1 The steel clamp shown is made by stamping and cutting the workpiece from cold-rolled steel sheet before stamping. Figure 6 The shape shown is then stamped.
[0047] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.
Claims
1. A machining mold for an aircraft brake disc steel clamp, characterized in that, Includes a lower mounting base (101) and an upper mounting base (102); The lower molding base (103) is fixedly installed on the upper end face of the lower mounting base (101). A molding block (104) is fixedly installed on the lower end face of the upper mounting base (102), and a molding upper pressure plate (105) is installed on the lower surface of the molding block (104), and a buffer device is provided between the molding upper pressure plate (105) and the molding block (104). The upper pressure plate (105) of the forming mold is provided with two guide holes (106) passing through the upper and lower end faces of the upper pressure plate (105), and the lower part of the two guide holes (106) is close to the center of the two guide holes (106); the upper part of the forming mold pressure block (104) is movably connected with two forming movable pressure blocks (107), and the two forming movable pressure blocks (107) cooperate with the lower forming mold base (103) to form a stamping cavity for a steel clamp for one-time stamping, and the two forming movable pressure blocks (107) pass through the guide holes (106). The aircraft brake disc steel clamp includes two symmetrically arranged arched parts (1) fixedly connected to the side of the aircraft brake disc, and a connecting part (2) fixedly connecting the tops of the two arched parts (1) together; grooves (3) are provided at the connection points on both sides of the arched parts (1) and the connecting part (2).
2. The processing mold for an aircraft brake disc steel clamp according to claim 1, characterized in that, The molding block (104) is provided with an elongated hole (108), and the upper end of the molding movable block (107) passes through the elongated hole (108) and is connected to the molding block (104).
3. The processing mold for an aircraft brake disc steel clamp according to claim 1, characterized in that, The upper mounting base (102), molding block (104) and molding upper pressure plate (105) are fixedly connected by long bolts (109), and the end of the long bolt (109) connecting the molding block (104) and the molding upper pressure plate (105) is fitted with a first buffer spring (110).
4. The processing mold for an aircraft brake disc steel clamp according to claim 1, characterized in that, The buffer device is a second buffer spring (111), and the upper and lower ends of the second buffer spring (111) are respectively located in the grooves of the connecting end faces of the molding die pressing block (104) and the molding die upper pressure plate (105).
5. The processing mold for an aircraft brake disc steel clamp according to claim 1, characterized in that, The included angle between the two forming movable pressure blocks (107) is 15°-25°.
6. The processing mold for an aircraft brake disc steel clamp according to claim 1, characterized in that, The two symmetrically arranged arched parts (1) and connecting parts (2) are integrally formed by pressing steel plates through a processing mold.
7. The machining mold for an aircraft brake disc steel clamp according to claim 1, characterized in that, The included angle between the arched part (1) and the connecting part (2) is between 135° and 145°, and the lower width of the arched part (1) is greater than the upper width.
8. A method for processing steel clamps for aircraft brake discs, characterized in that, The workpiece to be processed is placed on the top end face of the lower forming mold base (103) of the processing mold for the aircraft brake disc steel clamp according to any one of claims 1-7. The stamping machine drives the upper mounting base (102) to descend. During the descent, the positioning rod (113) provided on the lower mounting base (101) enters the positioning cylinder (112) provided on the upper mounting base (102) to complete the positioning. After that, the upper mounting base (102) continues to descend. At this time, the two forming movable pressure blocks (107) contact the workpiece to be processed and press down. The workpiece to be processed enters the stamping cavity formed by the two forming movable pressure blocks (107) and the lower forming mold base (103) to complete one stamping and make the steel clamp.