Steel clamp forming die for aircraft static brake disc

Abstract

The present disclosure relates to a kind of steel clamping forming die for aircraft static brake disc, comprising: lower die base plate, lower die module is fixed on the upper surface of the lower die base plate, stripping plate is arranged above lower die base plate, and the stripping plate is connected with lower die base plate by compression mechanism;The upper surface of stripping plate is provided with arc-shaped recess, and the middle part of the arc-shaped recess is provided with forming slot hole penetrating stripping plate, and the lower die module enters into forming slot hole when stripping plate descends;It also includes upper die plate, the lower surface of lower die plate is fixedly connected with upper die module, the lower surface of upper die module is provided with arc-shaped protrusion matched with arc-shaped recess, and upper die module is provided with forming hole penetrating the upper die plate, and lower die plate enters into forming hole by passing forming slot hole;Using clamping forming die improves production efficiency under the condition of ensuring machining precision, the dimensional consistency of product after forming is very high, product surface has no machining trace, improves product pass rate and product precision, and greatly reduces production cost.

Description

Technical Field

[0001] This disclosure relates to the field of aircraft braking technology, specifically to a steel clamp forming mold for aircraft static brake discs. Background Technology

[0002] Aircraft wheels consist of hubs, tires, and braking systems. The braking system itself comprises brake housings, cylinder blocks, and brake discs. There are two types of brake discs: moving discs and stationary discs. The moving disc has a keyway on its outer circumference, which engages with a guide rail on the wheel, allowing it to rotate with the wheel. The stationary disc has a keyway on its inner circumference, which engages with a key on the brake housing. Since the brake housing does not rotate, the stationary disc also does not rotate. The moving and stationary discs are staggered on the brake housing. When braking is required, the piston in the cylinder block applies pressure along the axial direction of the brake housing. Under this pressure, the brake discs press against each other. The friction between the stationary disc and the rotating moving disc generates braking torque, converting the aircraft's kinetic energy into heat energy, thus bringing the aircraft to a stop. As brake discs are used repeatedly, their condition deteriorates. To protect them, measures such as... Figure 6 The steel clamp shown protects the brake disc; The steel clips used in aircraft static brake discs currently require extremely high dimensional accuracy, demanding a tight fit after assembly. Furthermore, the static brake discs are subjected to various complex loads and high temperatures during braking. Therefore, the steel clips used in aircraft static brake discs are made of corrosion-resistant, high-strength steel (which is difficult to process). The steel clips for aircraft static brake discs have a unique shape, with an arc surface and bent edges on both sides. Conventional processing involves manually forming the clips from cold-rolled sheet metal. This manual forming process results in inconsistent dimensional accuracy, obvious surface machining marks, a very low pass rate, and extremely low work efficiency. Summary of the Invention

[0003] The purpose of this disclosure is to provide a steel clamp forming mold for aircraft static brake discs that improves the production efficiency of steel clamps while ensuring the precision and strength of the steel clamps.

[0004] To achieve the above objectives, the present invention provides a steel clamp forming mold for aircraft static brake discs, comprising: a lower die base plate fixedly connected to a stamping press fixed die base, a lower module fixedly disposed on the upper surface of the lower die base plate, and a stripper plate disposed above the lower die base plate, wherein the stripper plate and the lower die base plate are connected by a compression mechanism. The upper surface of the stripping plate is provided with an arc-shaped groove, and the middle part of the arc-shaped groove is provided with a forming slot hole that passes through the stripping plate. When the stripping plate descends, the lower module enters the forming slot hole. It also includes an upper template fixedly connected to the stamping die holder, an upper module fixedly connected to the lower surface of the upper template, an arc-shaped protrusion that mates with the arc-shaped groove on the lower surface of the upper module, and a forming hole through the upper module. When the upper template moves downward, the lower module passes through the forming groove and enters the forming hole.

[0005] Preferably, a punching block is provided in the forming hole, and the arc surface of the lower surface of the punching block and the arc surface of the arc protrusion are located on the same arc surface; an impact column is fixedly connected above the punching block, and the upper end of the impact column extends upward through the upper template.

[0006] Preferably, the compression mechanism includes vertically upward columns fixed at the four corners of the lower mold base plate, the columns being slidably connected to through holes provided on the stripper plate; a spring is sleeved on the column, the spring being located between the lower mold base plate and the stripper plate.

[0007] Preferred, an installation template that is fixedly connected to the fixed die base of the stamping machine is fixedly connected below the lower die base plate.

[0008] Preferably, the four corners of the installation template are provided with vertically upward guide posts, and the four corners of the upper template are provided with guide cylinders corresponding to the guide posts. When the upper template moves downward, the guide posts enter the guide cylinders for positioning.

[0009] Preferably, the arc of the arc groove is 30°-40°.

[0010] The beneficial effects of this invention are: 1. During the forming process, the cut sheet material is placed onto the stripper plate. At this time, the upper template drives the upper module to descend. The arc-shaped protrusion on the upper module forms the sheet material placed on the stripper plate in one step, pressing the sheet material into the arc-shaped groove on the stripper plate to form an arc-shaped sheet material. Then, the upper template drives the upper module to continue to descend, which in turn drives the stripper plate to descend. The lower module passes through the forming slot on the stripper plate and presses the arc-shaped sheet material into the forming hole of the upper module to complete the second forming and complete the production of the steel clamp. The use of steel clamp forming mold improves production efficiency while ensuring processing accuracy. The dimensional consistency of the formed products is very high, and there are no processing marks on the product surface, which improves the product qualification rate and product accuracy and greatly reduces production costs.

[0011] 2. A punch block is installed inside the forming hole, and an impact column is fixedly connected to the upper end of the punch block. During the secondary forming process, the arc-shaped plate is pressed into the forming hole. At this time, the punch block moves upward along the forming hole. After the forming is completed, the upper template moves upward, driving the upper module to move upward. When it reaches the top, the impact column collides with the upper part of the press. The impact column moves downward and pushes out the steel clamp that has entered the forming hole, which can quickly complete the demolding of the steel clamp and improve efficiency. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the steel clamp forming mold in this invention; Figure 2 This is a front view structural schematic diagram of the steel clamp forming mold in this invention; Figure 3 This is a side view of the steel clamp forming mold in this invention. Figure 4 This is an exploded structural diagram of the steel clamp forming mold in this invention; Figure 5 This is a schematic diagram of the sheet metal structure before the steel clamp is formed in an embodiment of the present invention; Figure 6 This is a schematic diagram of the steel clamp after it has been formed in an embodiment of the present invention.

[0013] 1. Lower mold base plate; 2. Lower module; 3. Stripper plate; 4. Upper module; 5. Ejector block; 6. Impact column; 7. Upper template; 8. Column; 9. Spring; 10. Mounting template; 11. Guide column; 12. Guide cylinder; 301. Arc-shaped groove; 302. Forming slot; 401. Arc-shaped protrusion; 402. Forming hole. Detailed Implementation

[0014] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure. Example

[0015] Because aircraft static brake discs can suffer damage after repeated use, posing a safety hazard to the aircraft, it is necessary to install features such as... Figure 6 The steel clamps shown are used to effectively protect the aircraft's static brake discs, in order to manufacture... Figure 6 The steel clamp shown uses Figure 5 The sheet metal shown is processed to prepare steel clips, while in the preparation of such... Figure 6 The steel clamps shown are currently made by hand sheet metal forming. The steel clamps made by hand sheet metal forming have inconsistent dimensional accuracy, obvious surface processing marks, a very low pass rate, and extremely low work efficiency.

[0016] To address the shortcomings of low pass rates and low efficiency in steel clamp production caused by current manual sheet metal work, this implementation example... Figure 1The disclosed invention relates to a steel clamp forming mold for an aircraft static brake disc, comprising: a lower mold base plate 1 fixedly connected to a fixed mold base of a stamping press. The stamping press is a conventional piece of equipment in the stamping forming field. In this embodiment, the forming mold is mounted on the stamping press, which provides stamping power to the forming mold. Specifically, during installation, a mounting template 10 is first fixed to the fixed mold base of the stamping press (which is basically located on the operating platform of the stamping press) using bolts; then, the lower mold base plate 1 is fixedly connected to the mounting template 10 using bolts, thus completing the fixed connection between the lower mold base plate 1 and the fixed mold base of the stamping press. The upper template 7 is fixedly connected to the moving die base of the stamping machine by bolts. The moving die base of the stamping machine drives the upper template 7 to move up and down, providing the power for stamping. like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a lower module 2 is fixedly connected to the upper surface of the lower mold base plate 1. The width of the lower module 2 is as shown in the figure. Figure 6 The inner grooves of the steel clamps shown are the same width. The lower module 2 is provided with an integral mounting base plate below it. The mounting base plate and the lower mold base plate are fixedly connected by bolts to complete the fixed connection between the lower module 2 and the lower mold base plate 1.

[0017] A stripper plate 3 is provided above the lower mold base plate 1, and the stripper plate 3 is connected to the lower mold base plate 1 through a compression mechanism; the upper surface of the stripper plate 3 is provided with an arc-shaped groove 301, the arc of which is 30°-40°, and the arc-shaped groove 301 is used for... Figure 5 The mold groove shown is used to bend the plate in one step. The middle of the arc-shaped groove 301 is provided with a forming groove hole 302 that passes through the stripper plate 3. When the stripper plate 3 is lowered, the lower module 2 enters the forming groove hole 302. An upper module 4 is fixedly connected to the lower surface of the upper template 7 by bolts. The lower surface of the upper module 4 is provided with an arc-shaped protrusion 401 that cooperates with the arc-shaped groove 301. The arc-shaped protrusion 401 and the upper module 4 are an integral structure. The arc of the arc-shaped protrusion 401 is the same as the arc of the arc-shaped groove 301. In this embodiment, the arc is 35°. At the same time, the arc part of the arc-shaped protrusion 401 extends through the front and rear end faces of the upper module 4, which can ensure that when the arc-shaped protrusion 401 cooperates with the arc-shaped groove 301 for stamping, the arc of the sheet metal after one-time forming is the same as the arc of the steel clamp design. The upper module 4 is provided with a forming hole 402 that penetrates the upper module 4. The lower module 2 enters the forming hole 402 and performs stamping in the stamping space formed in the forming hole 402. At the same time, the size of the gap between the lower module 2 and the forming hole 402 is the same as the thickness of the steel clamp. Specifically, during the stamping process, as follows: Figure 5The sheet material shown is placed on the upper surface of the stripper plate 3. A limiting groove is provided on the upper surface of the stripper plate 3 to facilitate the placement of the sheet material. Once the sheet material is in position, the stamping machine is started. The moving die base of the stamping machine drives the upper die plate 7 downwards. When the arc-shaped protrusion 401 of the upper die plate 4 contacts the sheet material, the sheet material is stamped. The arc-shaped protrusion 401 presses the sheet material into the arc-shaped groove 301 to form an arc-shaped sheet material. At this time, the upper die plate 7 continues to descend. Since the stripper plate 3 and the lower die base plate 1 are connected by a compression mechanism, the upper die plate drives the stripper plate 3 downwards during the descent. At this time, the lower die plate 2 passes through the forming slot 302 of the stripper plate 3. The one-time formed arc-shaped plate is pushed into the forming hole 402 for secondary forming, completing the bending of both sides of the steel clamp and completing the stamping forming of the steel clamp; after the forming is completed, the stamping machine drives the upper template 7 to move upward, the lower template 2 exits from the forming hole 402, and the formed steel clamp is demolded from the forming hole 402, and the stripper plate 3 is reset; the steel clamp is formed in one stamping and two forming processes using a steel clamp forming mold, and the forming of each steel clamp takes about 1 second, which effectively improves production efficiency and reduces manufacturing costs. At the same time, the use of forming molds results in very high dimensional consistency of the formed products, and there are no processing marks on the product surface, which improves the product qualification rate and product precision.

[0018] In another embodiment, such as Figure 1 , Figure 2 and Figure 3 A punch block 5 is provided inside the forming hole 402. The punch block 5 is slidably connected to the forming hole 402 and can move up and down in the forming hole 402. The arc-shaped surface of the lower surface of the punch block 5 and the arc-shaped surface of the arc-shaped protrusion 401 are located on the same arc-shaped surface. This ensures that when the arc-shaped protrusion 401 impacts the sheet metal to form an arc-shaped plate, there will be no other bending surfaces or stamping marks. An impact post 6 is fixedly connected above the punch block 5 to the arc-shaped protrusion 401. The upper end of the impact post 6 extends upward through the upper template 7. Specifically, during stamping, when... When the lower module 2 pushes the one-time formed arc-shaped sheet into the forming hole 402 for secondary forming, it pushes the ejector block 5 to rise. At this time, the impact column also rises. After the forming is completed, the upper template 7 rises, taking the ejector block 5 with it. When it reaches the top, the impact column 6 collides with the upper platform of the stamping machine. After the collision, the impact column 6 pushes the ejector block 5 downward in the forming hole 402. At this time, the ejector block pushes out the steel clamp located in the forming hole 402 after the forming is completed, which can realize the demolding function of the steel clamp and improve the efficiency of stamping.

[0019] In another embodiment, the compression mechanism includes vertically upward-pointing columns 8 fixedly disposed at the four corners of the lower mold base plate 1. The lower end of the column 8 is fixedly connected to the lower mold base plate 1 by bolts, and the upper end of the column 8 is slidably connected to a through hole provided on the stripper plate 3, ensuring that the stripper plate 3 can move up and down along the column 8. A spring 9 is sleeved on the column 8, and the spring 9 is located between the lower mold base plate 1 and the stripper plate 3. Specifically, during operation, when the upper module 4 drives the stripper plate 3 downward, the stripper plate 3 moves downward along the column 8, at which time the spring 9 is compressed. When the upper module 4 separates from the stripper plate 3, the compressed spring resets, causing the stripper plate to rise to the designed position.

[0020] In another embodiment, to ensure the lower die accurately enters the forming hole 402 during stamping and avoids damage to the mold, vertically upward guide posts 11 are provided at the four corners of the mounting template 10, and guide cylinders 12 corresponding to the guide posts 11 are provided at the four corners of the upper template 7. When the upper template 7 moves downward, the guide posts 11 enter the guide cylinders 12 for positioning. During stamping, when the moving die holder of the stamping machine drives the upper template 7 downward, the guide posts 11 first enter the guide cylinders 12 to achieve guiding and positioning, providing path guidance for the mold during subsequent impact, preventing the upper and lower dies from offsetting and colliding during stamping, thus effectively protecting the mold.

[0021] The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0022] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0023] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A steel clamp forming mold for aircraft static brake discs, characterized in that, include: The lower die base plate (1) is fixedly connected to the fixed die base of the stamping machine, the lower module (2) is fixedly provided on the upper surface of the lower die base plate (1), and the stripper plate (3) is provided above the lower die base plate (1), and the stripper plate (3) is connected to the lower die base plate (1) through a compression mechanism; The upper surface of the stripping plate (3) is provided with an arc-shaped groove (301), and the middle part of the arc-shaped groove (301) is provided with a forming slot (302) that passes through the stripping plate (3). When the stripping plate (3) descends, the lower module (2) enters the forming slot (302). It also includes an upper template (7) fixedly connected to the stamping die holder. An upper module (4) is fixedly connected to the lower surface of the upper template (7). The lower surface of the upper module (4) is provided with an arc-shaped protrusion (401) that cooperates with the arc-shaped groove (301). The upper module (4) is provided with a forming hole (402) that penetrates the upper module (4). When the upper template (7) moves downward, the lower module (2) passes through the forming groove (302) and enters the forming hole (402).

2. The steel clamp forming mold for aircraft static brake discs according to claim 1, characterized in that, The forming hole (402) is provided with a punching block (5), and the arc surface of the lower surface of the punching block (5) and the arc surface of the arc protrusion (401) are located on the same arc surface; an impact column (6) is fixedly connected above the punching block (5), and the upper end of the impact column (6) extends upward through the upper template (7).

3. The steel clamp forming mold for aircraft static brake discs according to claim 1, characterized in that, The compression mechanism includes columns (8) fixed at the four corners of the lower mold base plate (1) and vertically upward. The columns (8) are slidably connected to the through holes provided on the stripper plate (3). A spring (9) is sleeved on the columns (8) and the spring (9) is located between the lower mold base plate (1) and the stripper plate (3).

4. The steel clamp forming mold for aircraft static brake discs according to claim 1, characterized in that, The lower die base plate (1) is fixedly connected to the mounting template (10) which is fixedly connected to the fixed die base of the stamping machine.

5. The steel clamp forming mold for aircraft static brake discs according to claim 4, characterized in that, The four corners of the installation template (10) are respectively provided with vertically upward guide posts (11), and the four corners of the upper template (7) are respectively provided with guide cylinders (12) corresponding to the guide posts (11). When the upper template (7) moves downward, the guide posts (11) enter the guide cylinders (12) for positioning.

6. The steel clamp forming mold for aircraft static brake discs according to claim 1, characterized in that, The arc of the arc-shaped groove (301) is 30°-40°.

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