Airplane spring clip bending tool
By designing a combined device including a folded base, a fixing block, a pressure block, a positioning pin, a bent base, and a bent mandrel, the problem of insufficient machining accuracy of aircraft spring clips was solved, achieving efficient precision control and a low scrap rate.
Patent Information
- Application Number
- CN202422881143.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-11-26
AI Technical Summary
Existing technology cannot guarantee the bending precision of aircraft spring clips, resulting in a high product scrap rate.
A combination device consisting of a folded base, a fixing block, a pressure block, a positioning pin, a bent base, a bent mandrel, and a bent block is used to ensure that the folded angle, bending length, spacing, and arc angle of the spring clip meet the design requirements through precise positioning and alignment.
It improves the accuracy and efficiency of spring clip bending processing, reduces product scrap rate, and meets the dimensional requirements of design drawings.
Smart Images
Figure CN223557126U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of aviation equipment manufacturing technology, and relates to an aircraft spring clip bending tooling, specifically a positioning device that can ensure the accuracy of the aircraft spring clip bending. Background Technology
[0002] This type of aircraft spring clip is a typical three-dimensional spatial product. It primarily functions within the aircraft's integrated detection and alarm system, controlling the self-test devices of various onboard equipment and acting as a rotary switch to monitor the real-time operational status of these devices. To ensure the proper functioning of the aircraft's integrated detection and alarm system, the bending dimensions of this spring clip must meet the requirements of the drawings. This type of aircraft spring clip product ( Figure 2 (As shown) The spring clip is formed by bending spring steel wire. Its initial state is the shape after two bends at the middle position. The final product of the spring clip requires that eight dimensions be guaranteed in terms of spatial position: first, the bending angles α and β; second, the bending length dimensions L1 and L2; third, the spacing d1 and d2; and fourth, the arc angles r1 and r2. The traditional manufacturing method is to use manual bending. However, because this type of aircraft spring clip is a spatial angle, it is difficult to accurately locate the reference plane. Conventional measurement methods cannot guarantee accuracy, resulting in a very high product scrap rate. Currently, there is no device in the field of aerospace equipment manufacturing that can guarantee the bending processing accuracy of this product. Therefore, designing a bending device that can guarantee manufacturing accuracy for the bending processing of this type of aircraft spring clip is crucial for the quality control of the bending processing of the spring clip. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides a bending tooling for aircraft spring clips, which can improve the machining accuracy of bending spring clips to meet the requirements of design drawings and reduce the scrap rate of this type of aircraft spring clip bending tooling.
[0004] The present invention adopts the following technical solution:
[0005] A bending fixture for aircraft spring clips, the bending fixture comprising an angled base 1, a fixing block 2, a pressure block 3, a positioning pin 4, a bending base 5, a bending mandrel 6, a bending block 7, and a positioning mandrel 8.
[0006] The aforementioned angled base 1 is a block structure with a V-shaped groove on one side of its upper surface. The included angle of the bottom of the V-shaped groove is equal to α, which is used to process the bending angle α of the spring clip. The upper surface of the angled base 1 is also provided with an irregular groove. The outline of the irregular groove is consistent with the shape of the spring wire after the bending angle α is processed. This is used to place the product before processing and to ensure the shape and position after processing. The upper surface outside the V-shaped groove of the angled base 1 is provided with a threaded hole.
[0007] The fixing block 2 is generally square and is placed on the angled base 1 to press and fix the spring steel wire to be processed. A strip-shaped hollow with the same width as the V-shaped groove is made at the position corresponding to the V-shaped groove on the angled base 1. A coaxial threaded through hole is made at the position corresponding to the threaded hole on the angled base 1, which is used to screw in the positioning pin 4 to fix and press the fixing block 2 on the angled base 1.
[0008] The pressure block 3 is strip-shaped, and its length matches the strip-shaped cutout on the fixing block 2. Its width and bottom match the V-shaped groove on the angled base 1. The pressure block 3 passes through the cutout of the fixing block 2 and is placed in the V-shaped groove of the angled base 1, bending the spring steel wire to form a bending angle α.
[0009] The upper surface of the bent base 5 has four slots, two of which are located in the middle of the upper surface. Two bent mandrels 6 are inserted into these two slots with a clearance fit for the spring steel wire to bend around them. The other two slots are near the edge and are used to place the positioning mandrels 8 with a clearance fit. The upper surface of the bent base 5 also has a shaped groove, the shape of which is consistent with the shape of the spring steel wire after bending around the bent mandrels 6 at the bending angle α. This groove is used to place the product before processing and to assist in forming. The groove length of the shaped groove corresponding to the bending length dimension L1 of the spring card is consistent with the final dimension of the spring card.
[0010] The bent block 7 is a strip block with a triangular cross-section. Two slots are machined on its bottom surface to place the positioning mandrel 8 with clearance fit, and it is connected to the bent base 5 through the positioning mandrel 8. The edge where the inclined surface of one side of the bent block 7 intersects with the bottom surface is made into an arc edge, and the arc and included angle meet the final size requirements. The bent block 7 is machined with irregular grooves, and its surface and the irregular grooves on the bent base 5 together form the final surface of the spring clip. The key position dimensions are consistent with the key dimensions of the final formed product of the spring clip, which are used to assist in bending and fixing.
[0011] The bending fixture is used as follows:
[0012] First, manually bend the spring steel wire to its initial state and place it in the irregular groove of the angled base 1. Place the fixing block 2 on the angled base 1 and fix the fixing block 2 and the angled base 1 with the positioning pin 4. Then, press the pressure block 3 through the hollow of the fixing block 2 into the V-shaped groove of the angled base 1 to press the spring steel wire into an angle to meet the process requirements. Remove the spring steel wire and place the bent part in the irregular groove of the bending base 5. Insert the bending mandrel 6 into the hole groove of the bending base 5 and press along the bending mandrel 6... The spring steel wire is bent until it is completely placed in the irregular groove, ensuring that the dimensions of the spring steel wire from the bent part to the end of the irregular groove meet the process requirements. The bending base 5 and the bending block 7 are connected and fixed using the positioning mandrel 8. The spring steel wire is bent along the arc corner edge of the bending block 7, ensuring that the bending angle and arc meet the process requirements. At the same time, the spring steel wire is shaped and cut along the irregular groove of the bending block 7 and completely placed in the irregular groove of the bending block 7, ensuring that the remaining dimensions of the product meet the process requirements.
[0013] Two additional slots are made on the upper surface of the curved base 5, and two corresponding slots are also made on the bottom surface of the curved block 7. These are used to connect the curved block 7 to the curved base 5 via the positioning mandrel 8, and the positioning mandrel 8 and the slots are in clearance fit.
[0014] The beneficial effects of this utility model are as follows:
[0015] Existing methods are inconvenient to operate, make it difficult to guarantee the processing accuracy of spring bending, and result in an extremely high product scrap rate.
[0016] 1. This utility model ensures that the angle dimensions of the product meet the process requirements through the cooperation of the angle base, fixing block, pressure block and positioning pin.
[0017] 2. By cooperating with the bent base and the bent mandrel, as well as with the bent base, the bent block, and the positioning mandrel, the bending angle, bending length, spacing, and arc angle of the product are ensured to meet the process requirements.
[0018] 3. This utility model has a simple structure, is easy to install and disassemble, and can significantly improve the efficiency of spring bending processing while ensuring the accuracy of key dimensions. Attached Figure Description
[0019] Figure 1 The diagram shows the assembly of the bending tooling, where (a) is a diagram of the combination of the angled base, the fixing block, the pressure block and the positioning pin, (b) is a diagram of the combination of the bending base and the bending mandrel, and (c) is a diagram of the combination of the bending base, the bending mandrel, the bending block and the positioning mandrel.
[0020] Figure 2The diagram shows a spring clip product, where (a) is the initial state of the spring steel wire, (b) is the complete state of the product, and (c) is the AA view. In the diagram, α and β are the bending angles of the spring clip, L1 and L2 are the bending length dimensions of the spring clip, d1 and d2 are the spacing, and r1 and r2 are the arc angles.
[0021] Figure 3 This is a schematic diagram of a folded base, where (a) is a top view and (b) is a side view;
[0022] Figure 4 This is a schematic diagram of the fixing block using the device described in this utility model, wherein (a) is a top view and (b) is a side view;
[0023] Figure 5 This is a schematic diagram of a pressing block using the device described in this utility model, wherein (a) is a side view and (b) is a front view;
[0024] Figure 6 This is a schematic diagram of the curved base of the device described in this utility model, wherein (a) is a top view and (b) is a perspective view.
[0025] Figure 7 The diagram shows a bent block using the device described in this utility model, where (a) is a top view and (b) is a side view.
[0026] Among them, 1—angled base; 2—fixing block; 3—pressure block; 4—positioning pin; 5—bent base; 6—bent mandrel; 7—bent block; 8—positioning mandrel. Detailed Implementation
[0027] The technical solution of this utility model will now be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments that are improved or adjusted by those skilled in the art based on the embodiments of this utility model are within the protection scope of this utility model.
[0028] A bending fixture for aircraft spring clips, comprising an angled base 1, a fixing block 2, a pressure block 3, a positioning pin 4, a bending base 5, a bending mandrel 6, a bending block 7, and a positioning mandrel 8, as shown below. Figure 1 As shown.
[0029] like Figure 3 As shown, the angled base 1 is a block structure with a V-shaped groove on one side of its upper surface. The included angle of the bottom of the V-shaped groove is equal to α, which is used to process the bending angle α of the spring clip. The upper surface of the angled base 1 is also provided with an irregular groove. The outline of the irregular groove is consistent with the shape of the spring wire after the bending angle α is processed. It is used to place the product before processing and to ensure the shape and position after processing. The upper surface outside the V-shaped groove of the angled base 1 is provided with a threaded hole.
[0030] like Figure 4 As shown, the fixing block 2 is generally square and is placed on the angled base 1 to press and fix the spring steel wire to be processed. A strip-shaped hollow with the same width as the V-shaped groove is made at the position corresponding to the V-shaped groove on the angled base 1. A coaxial threaded through hole is made at the position corresponding to the threaded hole on the angled base 1, which is used to screw in the positioning pin 4 to fix and press the fixing block 2 on the angled base 1.
[0031] like Figure 5 As shown, the pressure block 3 is strip-shaped, its length matches the strip-shaped cutout on the fixing block 2, and its width and bottom match the V-shaped groove on the angled base 1. The pressure block 3 passes through the cutout of the fixing block 2 and is placed in the V-shaped groove of the angled base 1, bending the spring steel wire to form a bending angle α.
[0032] like Figure 6 As shown, the upper surface of the bent base 5 has four slots, two of which are located in the middle of the upper surface. Two bent mandrels 6 are inserted into these two slots with a clearance fit for the spring steel wire to bend around it. The other two slots are near the edge and are used to place the positioning mandrels 8 with a clearance fit. The upper surface of the bent base 5 also has a shaped groove, the shape of which is consistent with the shape of the spring steel wire after bending around the bent mandrels 6 at the bending angle α. This groove is used to place the product before processing and to assist in forming. The groove length of the shaped groove corresponding to the bending length dimension L1 of the spring card is consistent with the final dimension of the spring card.
[0033] like Figure 7 As shown, the bent block 7 is a strip block with a triangular cross-section. Two slots are machined on its bottom surface to place the positioning mandrel 8 with clearance fit, and it is connected to the bent base 5 through the positioning mandrel 8. The edge where the inclined surface of one side of the bent block 7 intersects with the bottom surface is made into an arc edge, and the arc and included angle meet the final size requirements. The bent block 7 is machined with irregular grooves, and its surface and the irregular grooves on the bent base 5 together form the final surface of the spring clip. The key position dimensions are consistent with the key dimensions of the final formed product of the spring clip, which are used to assist in bending and fixing.
[0034] The bending fixture is used as follows:
[0035] First, manually bend the spring steel wire to its initial state and place it in the irregular groove of the angled base 1. Place the fixing block 2 on the angled base 1 and fix the fixing block 2 and the angled base 1 with the positioning pin 4. Then, press the pressure block 3 through the hollow of the fixing block 2 into the V-shaped groove of the angled base 1 to press the spring steel wire into an angle to meet the process requirements. Remove the spring steel wire and place the bent part in the irregular groove of the bending base 5. Insert the bending mandrel 6 into the hole groove of the bending base 5 and press it along the bending mandrel 6. The spring steel wire is bent until it is completely placed in the irregular groove, ensuring that the dimensions of the spring steel wire from the bent part to the end of the irregular groove meet the process requirements. The bending base 5 and the bending block 7 are connected and fixed using the positioning mandrel 8. The spring steel wire is bent along the arc edge of the bending block 7, ensuring that the bending angle and arc meet the process requirements. At the same time, the spring steel wire is shaped and cut along the irregular groove of the bending block 7 and completely placed in the irregular groove of the bending block 7, ensuring that the remaining dimensions of the product meet the process requirements.
[0036] When bending aircraft spring clips, the spatial dimensions mainly include eight: bending angles α and β, bending lengths L1 and L2, spacing d1 and d2, and arc angles r1 and r2. The accuracy of these eight dimensions can be effectively guaranteed by applying this invention. This invention has a simple structure and is easy to install. While ensuring the accuracy of the aforementioned key dimensions, it can also significantly improve the manufacturing efficiency of bending aircraft spring clips.
[0037] The above-described embodiments are merely illustrative of the implementation of this utility model, but should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A bending fixture for aircraft spring clips, characterized in that, The bending fixture includes a folded base (1), a fixing block (2), a pressing block (3), a bending base (5), a bending mandrel (6), and a bending block (7); The angled base (1) is a block structure with a V-shaped groove on one side of its upper surface. The angle between the bottom of the V-shaped groove is equal to α, which is used to process the bending angle α of the spring clip. The upper surface of the angled base (1) is also provided with an irregular groove. The outline of the irregular groove is consistent with the shape of the spring wire after the bending angle α is processed, which is used to place the product before processing and to ensure the shape and position after processing. The fixing block (2) is square in shape and is placed on the corner base (1) to press and fix the spring steel wire to be processed. A strip-shaped hollow with the same width as the V-shaped groove is made at the position corresponding to the V-shaped groove on the corner base (1). The pressure block (3) is strip-shaped, its length matches the strip-shaped cutout on the fixed block (2), and its width and bottom match the V-shaped groove on the angled base (1). The pressure block (3) passes through the cutout of the fixed block (2) and is placed in the V-shaped groove of the angled base (1) to bend the spring steel wire to form a bending angle α. The upper surface of the bent base (5) has two holes and slots located in the middle of the upper surface. Two bent mandrels (6) are inserted into the holes and slots with clearance fit, which are used for the spring steel wire to bend around it. The upper surface of the bent base (5) also has a special-shaped groove, whose shape is consistent with the shape of the spring steel wire after bending around the bent mandrel (6) at the bending angle α. It is used to place the product before processing and to assist in forming. The groove length of the special-shaped groove corresponding to the bending length dimension L1 of the spring card is consistent with the final dimension of the spring card. The bent block (7) is a strip block with a triangular cross section. The edge where one of its inclined surfaces intersects with the bottom surface is made into an arc edge. Its curvature and included angle meet the final size requirements. The bent block (7) is machined with irregular grooves. Its surface and the irregular grooves on the bent base (5) together form the final surface of the spring clip, which is used to assist in bending and fixing.
2. The aircraft spring clip bending fixture according to claim 1, characterized in that, The upper surface outside the V-groove of the angled base (1) has a threaded hole, and the corresponding position of the fixing block (2) has a coaxial threaded through hole for screwing in the positioning pin (4) to fix and press the fixing block (2) onto the angled base (1).
3. The aircraft spring clip bending fixture according to claim 1, characterized in that, Two additional slots are made on the upper surface of the curved base (5), and two slots are also made on the corresponding positions on the bottom surface of the curved block (7) for connecting the curved block (7) to the curved base (5) through the positioning mandrel (8), and the positioning mandrel (8) and the slots are in clearance fit.