Secondary positioning tool for machining aircraft brake device

Abstract

The secondary positioning tool for machining the aircraft brake device comprises a first shell of a cuboid structure, first air chambers are arranged on the two sides of the interior of the first shell, first push rods are arranged in the first air chambers, a brake rod is arranged in the middle of the first shell, and a second push rod is arranged in the middle of the first shell. The end of the brake rod and the end of the first push rod are fixedly connected with buckling plates, a plurality of first teeth are axially arranged on the side wall of the brake rod at equal intervals, a second shell is fixedly connected to the upper portion of the front face of the first shell, a second air chamber is arranged in the second shell, and a second push rod is arranged in the second air chamber. The end of the second push rod is fixedly connected with a brake part, the brake part comprises a cylinder, one end of the cylinder is provided with a semicircular concave cohesion face, the inner wall of the cohesion face is provided with a plurality of second teeth, and the first teeth are matched with the second teeth. By means of the brake rod, the brake piece and other components, it is ensured that the position of the buckling piece is kept.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clamping tooling, in particular to a secondary positioning tooling for processing aircraft brake devices. BACKGROUND

[0002] The deviation of repeated positioning of the semi-finished product causes the product to be scrapped. In the existing starting tooling, the brake cylinder directly clamps the main cylinder piston rod, and during the transfer process, the brake cylinder leaks to cause insufficient air pressure, the main cylinder stroke slides down, and the deviation of repeated positioning of the semi-finished product occurs. Based on this, in order to solve the problem of unstable brake device and high product scrap rate, a new brake device must be designed to improve the yield. SUMMARY

[0003] To solve the above problems, the present application discloses a secondary positioning tooling for processing aircraft brake devices, which comprises a first shell of a rectangular body structure, first air chambers are arranged on both sides of the inside of the first shell, a first push rod is arranged in the first air chamber, one end of the first push rod extends out of the inside of the first shell, a brake lever is arranged in the middle of the first shell and extends out of the inside of the first shell, and a clamping plate is fixedly connected to the end of the brake lever and the end of the first push rod. The first air chamber is used to drive the first push rod to act, so as to realize the clamping of the workpiece by the clamping plate.

[0004] A plurality of first teeth are arranged on the side wall of the brake lever at equal intervals in the axial direction, a second shell is fixedly connected to the upper part of the front face of the first shell, a second air chamber is arranged in the inside of the second shell, a second push rod is arranged in the second air chamber, a brake piece is fixedly connected to the end of the second push rod, the brake piece comprises a cylindrical body, a semicircular concave embracing surface is arranged at one end of the cylindrical body, a plurality of second teeth are arranged on the inner wall of the embracing surface, and the first teeth and the second teeth are matched. When the first push rod needs to be kept, the second push rod acts, the brake piece extends into the inside of the first shell, the embracing surface of the brake piece abuts against the brake lever, the first teeth and the second teeth are engaged, and the axial fixation of the brake lever is realized.

[0005] Preferably, first pistons are arranged at the end and the middle of the first push rod, and a sealing cover is arranged at one end of the first air chamber. The first piston at the end is fixedly connected with the first push rod, and the first piston at the middle is slidingly connected with the first push rod, and the first piston at the end is sequentially aerated on both sides, so as to realize the extension and contraction of the first push rod.

[0006] Preferably, second pistons are arranged at the end and the middle of the second push rod, and a fixing bolt is arranged in the middle of the brake piece and is threadedly connected with the second push rod. Similarly, the second piston at the end is fixedly connected with the first push rod, the second piston at the middle is slidingly connected with the second push rod, and the second piston at the end is aerated on both sides to realize the action of the brake piece.

[0007] Preferably, the side wall of the cylinder is provided with a limiting groove, and the limiting groove and the convex strip provided on the first shell are in sliding fit. The limiting groove and the convex strip ensure that the brake piece cannot rotate, further, reduce the processing difficulty of the first shell, and the axial stable sliding of the brake piece, the sliding sleeve is arranged between the first shell and the brake piece, the sliding sleeve is fixedly connected to the first shell, and the convex strip is arranged on the inner wall of the sliding sleeve.

[0008] Preferably, the lower end of the first shell is fixedly connected with a tail sleeve, and one end of the brake lever extends into the interior of the tail sleeve. The tail sleeve is arranged to protect the brake lever and accommodate the brake lever.

[0009] The beneficial effects of the present application are as follows:

[0010] The brake lever and the brake piece are arranged, and the sliding directions of the brake lever and the brake piece are perpendicular, the first tooth and the second tooth on the brake lever and the brake piece are in staggered fit, the brake lever is limited and fixed, even in the case that the cylinder is deflated, the position of the clamping plate can be kept unchanged, the position of the cylinder after clamping is ensured not to change, and the precision of clamping the workpiece again is high. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a perspective view of the present application;

[0012] Figure 2 It is a front view of the present application;

[0013] Figure 3 It is a side view of the present application;

[0014] Figure 4 It is a schematic view of the pneumatic components in the second shell of the present application;

[0015] Figure 5 It is a structure schematic view of the brake piece of the present application.

[0016] LIST OF REFERENCE NUMERALS

[0017] 1, first shell; 2, second shell; 3, clamping plate; 4, tail sleeve; 5, brake lever; 6, first piston; 7, first air chamber; 8, first push rod; 9, second piston; 10, fixing bolt; 11, second push rod; 12, brake piece;

[0018] 121, embracing surface; 122, cylinder; 123, limiting groove. DETAILED DESCRIPTION

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] like Figures 1 to 5 As shown, a secondary positioning fixture for machining aircraft brake devices includes a first housing 1 with a rectangular parallelepiped structure. First air chambers 7 are provided on both sides of the interior of the first housing 1. A first push rod 8 is disposed within each first air chamber 7. One end of the first push rod 8 extends from the interior of the first housing 1. A brake rod 5 is disposed in the middle of the first housing 1. Braking the brake rod 5 fixes the extension amount of the first push rod 8. Both the end of the brake rod 5 and the end of the first push rod 8 are fixedly connected to a clamping plate 3. When the first push rod 8 is activated, the clamping plate 3 extends or retracts. After the brake rod 5 is braked, the position of the clamping plate 3 is maintained.

[0021] The brake lever 5 has several first teeth evenly spaced along its sidewall. A second housing 2 is fixedly connected to the upper front of the first housing 1. The second housing is rectangular in shape. A second air chamber is provided inside the second housing 2. Both the first air chamber 7 and the second air chamber are cylindrical chambers. The axis of the second air chamber is perpendicular to the front of the first housing 1. A second push rod 11 is provided in the second air chamber. A brake component 12 is fixedly connected to the end of the second push rod 11. When the second push rod 11 is activated, it can push the brake component 12 into the first housing. Inside body 1, brake component 12 includes a cylinder 122. One end of cylinder 122 is provided with a semi-circular concave engagement surface 121, which satisfies the brake component 12 to engage with the side wall of brake lever 5. The inner wall of engagement surface 121 is provided with several second teeth, and the first teeth and second teeth cooperate. When the first teeth and second teeth are engaged, the axial movement of brake component 12 in brake lever 5 is restricted. At this time, brake lever 5 cannot move axially, that is, the clamping plate 3 is fixed.

[0022] First pistons 6 are provided at both the end and the middle of the first push rod 8. The first piston 6 at the end is fixedly connected to the first push rod 8, while the first piston 6 at the middle is slidably connected to the first push rod 8. A sealing cover is provided at one end of the first air chamber 7. After the components in the first air chamber 7 are assembled, the sealing cover can be installed to seal the first air chamber 7.

[0023] The end and middle part of the second push rod 11 are provided with the second piston 9, the installation mode of the two second pistons 9 is similar to that of the first piston 6, and details are not repeated here, the middle part of the brake piece 12 is provided with the fixing bolt 10, the fixing bolt 10 is in threaded connection with the second push rod 11, that is, the brake piece 12 is fixed on the second push rod 11, and similarly, the second piston 9 located at the end of the second push rod 11 is also fixedly connected to the second push rod 11 through the fixing bolt 10.

[0024] The side wall of the cylinder 122 is provided with the limiting groove 123, the limiting groove 123 and the convex strip pre-set on the first shell 1 are in sliding fit, and through the setting of the limiting groove 123 and the convex strip, it is ensured that the brake piece 12 will not appear the problem of rotation.

[0025] The lower end of the first shell 1 is fixedly connected with the tail cover 4, one end of the brake lever 5 extends into the inside of the tail cover 4, that is, the tail cover 4 is used for protecting the brake lever 5.

[0026] The technical means disclosed in the scheme of the application is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features.

Claims

1. A secondary positioning tool for processing an aircraft brake device, characterized in that, The utility model provides a kind of brake device, including the first shell (1) of cuboid structure, the inside of the first shell (1) is provided with first air chamber (7) on both sides, first air chamber (7) is provided with first push rod (8), one end of first push rod (8) extends from the inside of first shell (1), the middle of the first shell (1) is provided with brake lever (5), and brake lever (5) extends from the inside of first shell (1), and the end of brake lever (5) and the end of first push rod (8) are fixedly connected with buckle pressing plate (3); The side wall of the brake lever (5) is axially equidistantly provided with a plurality of first teeth, the upper portion of the front surface of the first shell (1) is fixedly connected with a second shell (2), the inside of the second shell (2) is provided with a second air chamber, and the second air chamber is provided with a second push rod (11), the end of the second push rod (11) is fixedly connected with a brake piece (12), the brake piece (12) includes a cylindrical body (122), one end of the cylindrical body (122) is provided with a semicircular concave embracing surface (121), the inner wall of the embracing surface (121) is provided with a plurality of second teeth, and the first teeth and the second teeth are matched.

2. The secondary positioning tooling for processing aircraft brake devices according to claim 1, characterized in that: The end and the middle of the first push rod (8) are provided with a first piston (6), one end of the first air chamber (7) is provided with a sealing cover.

3. The secondary positioning tooling for processing aircraft brake devices according to claim 1, characterized in that: The end and the middle of the second push rod (11) are provided with a second piston (9), the middle of the brake piece (12) is provided with a fixing bolt (10), and the fixing bolt (10) and the second push rod (11) are threadedly connected.

4. The secondary positioning tooling for processing aircraft brake devices according to claim 1, characterized in that: The side wall of the cylindrical body (122) is provided with a limiting groove (123), and the limiting groove (123) and the protrusion on the first shell (1) are slidingly matched.

5. The secondary positioning tooling for processing aircraft brake devices according to claim 1, characterized in that: The lower end of the first shell (1) is fixedly connected with a tail cover (4), and one end of the brake lever (5) extends into the inside of the tail cover (4).

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