Brake caliper turning clamp

Abstract

The utility model discloses a brake caliper turning fixture which is characterized in that the brake caliper turning fixture comprises a rotary fixture body, a positioning plate and a pressure head, the positioning plate is arranged at the front end of the rotary fixture body, a brake caliper containing cavity is arranged between the positioning plate and the rotary fixture body, and a cylindrical pin and a diamond pin are arranged on the positioning plate. When the brake caliper is positioned to the cylindrical pin and the rhombic pin and the rotation axis is kept coaxial with the axis of the rotation clamp body, the pressure head is slidably arranged on a central shaft hole of the rotation clamp body, a guide groove is formed in the pressure head, a guide pin limited in the guide groove is arranged on the rotation clamp body, and one end of the pressure head extends into the brake caliper containing cavity to abut against the rear end of the brake caliper. And the other end of the pressure head is connected with an ejector rod on the lathe. The clamp has the advantages that the coaxiality of the clamp and a lathe spindle after clamping is high, the balance block is arranged on the clamp body for dynamic balance adjustment, the clamp body rotates stably, displacement is avoided, machining precision is guaranteed, clamping of the clamp is convenient, and machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of machining fixtures, in particular to a brake caliper turning fixture. Background Art

[0002] The brake caliper is an important part of the disc brake. The existing brake caliper is mainly machined after casting. When machining the master cylinder hole of the brake caliper, the brake caliper needs to be fixed on the machine tool rotation first, and the turning tool processes the arc surface. Since the brake caliper has a non-circular structure, when the clamp on the existing machine tool fixes the brake caliper, the rotation center of the brake caliper and the rotation center of the machine tool spindle are easily offset, affecting the processing accuracy. Therefore, it is necessary to design a turning fixture with high positioning accuracy and convenient clamping. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a brake caliper turning fixture, which has a simple structure, is convenient for clamping and has high positioning accuracy.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A brake caliper turning fixture, characterized in that it includes a rotary clamp body, a positioning plate, and a pressure head, wherein the positioning plate is arranged at the front end of the rotary clamp body, a brake caliper accommodating cavity is defined between the positioning plate and the rotary clamp body, a cylindrical pin and a diamond pin are provided on the positioning plate, when the brake caliper is positioned to the cylindrical pin and the diamond pin and the rotary axis is kept coaxial with the rotary clamp body axis, the pressure head is slidably disposed on the central axis hole of the rotary clamp body, the pressure head has a guide groove, and a guide pin limitedly positioned in the guide groove is provided on the rotary clamp body, one end of the pressure head extends into the brake caliper accommodating cavity to press against the rear end of the brake caliper, and the other end of the pressure head is connected to the push rod on the lathe.

[0006] Furthermore, the lower half of the swivel clamp has a protruding arc-shaped support body, the positioning plate is connected to the end of the arc-shaped support body, the positioning plate is a left-right symmetrical arc-shaped plate, and the symmetry axis of the positioning plate coincides with the symmetry axis of the arc-shaped support body, and a balance block is provided on the upper half of the swivel clamp.

[0007] Furthermore, the cylindrical pin includes a first positioning portion, a limiting portion, a second positioning portion, and a threaded connection portion which are connected in sequence, wherein the first positioning portion is used to position the brake caliper, the limiting portion is limited at the inner end portion of the positioning plate, the second positioning portion is positioned in the positioning hole of the positioning plate, the threaded connection portion extends out of the outer end face of the positioning plate, and a locking nut is provided on the threaded connection portion, and a washer is provided between the locking nut and the end face of the positioning plate.

[0008] Furthermore, the rear end of the pressure head has a flange structure, the front end surface of the flange structure is in contact with the end surface of the central axis hole of the rotary clamp for limiting position, and the guide groove is arranged on the flange structure.

[0009] Furthermore, the swivel clamp specifically has a flange structure.

[0010] The beneficial effects of the utility model include: the coaxiality between the fixture and the lathe spindle is high after clamping, a balancing block is arranged on the fixture body for dynamic balancing adjustment, so that the fixture body rotates smoothly without displacement, thereby ensuring processing accuracy, and the fixture is easy to clamp and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 This is a specific front view of the rotary clamp of the utility model;

[0013] Figure 3 It is a front view of the positioning plate of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0015] A kind of Figure 1-3 The brake caliper turning fixture shown includes a rotary clamp body 1, a positioning plate 7, and a pressure head 3, wherein the positioning plate 7 is arranged at the front end of the rotary clamp body 1, and a brake caliper accommodating cavity is provided between the positioning plate 7 and the rotary clamp body 1. When clamping, the main end of the brake caliper is located in the accommodating cavity. The positioning plate 7 is provided with a cylindrical pin 5 and a diamond pin 6. When the brake caliper is positioned to the cylindrical pin 5 and the diamond pin 6 and the axis of rotation is kept coaxial with the axis of the rotary clamp body 1, the cylindrical pin 5 includes a first positioning portion 51, a limiting portion 52, a second positioning portion 53, and a threaded connection portion 54 connected in sequence, wherein the first positioning portion 51 is used to position the brake caliper, the limiting portion 52 is limited at the inner end of the positioning plate 7, the second positioning portion 53 is positioned in the positioning hole of the positioning plate 7, the threaded connection portion 54 extends out of the outer end face of the positioning plate 7, and a locking nut 9 is provided on the threaded connection portion 54, and a washer 8 is provided between the locking nut 9 and the end face of the positioning plate 7. The installation method of the diamond pin 6 is the same as that of the cylindrical pin 5.

[0016] The pressure head 3 is slidably arranged on the central axis hole of the rotary clamp body 1, and has a guide groove 31. The rotary clamp body 1 is provided with a guide pin 4 limitedly positioned in the guide groove 31. One end of the pressure head 3 extends into the brake caliper accommodating cavity to press against the rear end of the brake caliper, and the other end of the pressure head 3 is connected to the push rod on the lathe. The rear end of the pressure head 3 has a flange structure, and the front end surface of the flange structure contacts and limits the end surface of the central axis hole of the rotary clamp body 1, thereby preventing the pressure head 3 from sliding out of the range of the guide pin 4. In this embodiment, the guide groove 31 is arranged on the flange structure.

[0017] In order to ensure that the clamp body can maintain good stability during high-speed rotation, the lower half of the rotating clamp body 1 has a protruding arc-shaped support body 11, and the positioning plate 7 is connected to the end of the arc-shaped support body 11. The positioning plate 7 is a left-right symmetrical arc-shaped plate, and the symmetry axis of the positioning plate 7 coincides with the symmetry axis of the arc-shaped support body 11. A balance block 2 is provided on the upper half of the rotating clamp body 1. This structure ensures that the center of gravity of the clamp is on the rotation axis after clamping, and the jump is small during high-speed rotation, thereby improving the processing accuracy.

[0018] like Figure 2 As shown, the rotary clamp body 1 of this embodiment has a flange structure, and the flange structure is used to connect the rotary spindle of the machine tool.

[0019] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A brake caliper turning fixture, characterized in that: The invention comprises a rotary clamp body (1), a positioning plate (7), and a pressure head (3), wherein the positioning plate (7) is arranged at the front end of the rotary clamp body (1), a brake caliper accommodating cavity is provided between the positioning plate (7) and the rotary clamp body (1), a cylindrical pin (5) and a diamond pin (6) are provided on the positioning plate (7), the brake caliper is positioned to the cylindrical pin (5) and the diamond pin (6) and the rotary axis is kept coaxial with the axis of the rotary clamp body (1), the pressure head (3) is slidably arranged on the central axis hole of the rotary clamp body (1), the pressure head (3) has a guide groove (31), the rotary clamp body (1) is provided with a guide pin (4) limitedly located in the guide groove (31), one end of the pressure head (3) extends into the brake caliper accommodating cavity to press the rear end of the brake caliper, and the other end of the pressure head (3) is connected to the push rod on the lathe.

2. A brake caliper turning fixture according to claim 1, characterized in that: The lower half of the rotary clamp body (1) has a protruding arc-shaped support body (11), the positioning plate (7) is connected to the end of the arc-shaped support body (11), the positioning plate (7) is a left-right symmetrical arc-shaped plate, and the symmetry axis of the positioning plate (7) coincides with the symmetry axis of the arc-shaped support body (11), and the upper half of the rotary clamp body (1) is provided with a balancing block (2).

3. The brake caliper turning fixture according to claim 1, characterized in that: The cylindrical pin (5) comprises a first positioning portion (51), a limiting portion (52), a second positioning portion (53), and a threaded connection portion (54) which are connected in sequence, wherein the first positioning portion (51) is used to position the brake caliper, the limiting portion (52) is limited at the inner end portion of the positioning plate (7), the second positioning portion (53) is positioned in the positioning hole of the positioning plate (7), the threaded connection portion (54) extends out of the outer end surface of the positioning plate (7), and a locking nut (9) is provided on the threaded connection portion (54), and a washer (8) is provided between the locking nut (9) and the end surface of the positioning plate (7).

4. A brake caliper turning fixture according to claim 1, characterized in that: The rear end of the pressure head (3) has a flange structure, the front end surface of the flange structure contacts and limits the end surface of the central axis hole of the rotary clamp body (1), and the guide groove (31) is arranged on the flange structure.

5. The brake caliper turning fixture according to claim 1, characterized in that: The rotary clamp body (1) has a flange structure.

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