Clamp for machining spiral bevel gear

Abstract

A clamp for spiral bevel gear machining belongs to the technical field of bevel gear machining. Comprising a chuck, a fixing shaft used for fixing is arranged on one side of the chuck, a first groove is formed in the other side of the chuck, a tip used for fixing a spiral bevel gear is arranged at the center of the bottom of the first groove, and a plurality of clamping assemblies which are annularly arranged are arranged on the side face, located on the outer side of the first groove, of the chuck. Each clamping assembly is connected with the chuck through the corresponding fixing assembly and comprises a clamping block, the narrow portion of each clamping block extends towards the center of the chuck, racks are arranged on the opposite side faces of the multiple clamping blocks, and the clamping blocks generate centrifugal force to clamp the spiral bevel gear through high-speed rotation of the chuck. A rack is arranged on the side face, clamping the spiral bevel gear, of the clamping block, friction can be increased, the clamping force is increased, the centrifugal force is increased due to increase of the rotating speed, and the clamping force on the spiral bevel gear is larger.

Description

Technical Field

[0001] The utility model belongs to the technical field of bevel gear processing, and particularly relates to a fixture for spiral bevel gear processing. Background Art

[0002] During the processing of spiral bevel gears, fixtures are required. The three-jaw chuck is a relatively common fixture. Although the three-jaw chuck has good self-centering ability and fast clamping speed, since the three-jaw chuck cannot individually adjust each jaw on the chuck, it is difficult to accurately adjust the rotation center of the spiral bevel gear. Therefore, it is difficult to meet the requirements of high-precision processing of spiral bevel gears. In addition, the three-jaw chuck may have insufficient clamping force during use, and the loading and unloading are relatively troublesome, which is not conducive to the processing operation of spiral bevel gears.

[0003] Therefore, the applicant has carried out beneficial exploration and attempts and found a solution to the above problems. The technical solution to be introduced below was generated under this background. Summary of the Utility Model

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a fixture for spiral bevel gear processing.

[0005] The above technical problems of the utility model are mainly solved by the following technical solutions: A fixture for spiral bevel gear processing, including a chuck. One side of the chuck is provided with a fixed shaft for fixation, and a first groove is opened on the other side of the chuck. The center of the bottom of the first groove is provided with a center point for fixing the spiral bevel gear. On the side surface of the chuck outside the first groove, a plurality of clamping components arranged in a ring are provided. Each clamping component is connected to the chuck through a fixing component. The clamping component includes a clamping block. One end of the clamping block extends towards the center of the chuck, and racks are provided on the opposite side surfaces of the plurality of clamping blocks.

[0006] Preferably, one end of the clamping block close to the center of the chuck is smaller than the end far from the center of the chuck.

[0007] Preferably, the fixing component includes a fixed block fixedly arranged on the chuck and a rotating block rotatably connected to the fixed block. A circular groove is opened on the side surface of the fixed block away from the chuck, and a sliding block that can rotate in the circular groove is provided on the side surface of the rotating block in contact with the fixed block. An annular clamping strip for preventing the sliding block from falling off is provided at the opening of the circular groove, and a third groove is opened on the side surface of the rotating block away from the fixed block.

[0008] Preferably, the clamping block and the rotating block are fixedly connected by screws. A fourth groove is formed on the side of the clamping block away from the chuck. A through hole is formed at the bottom of the fourth groove and penetrates through the clamping block for the screw to pass through. A fixing rod perpendicular to the chuck is arranged on the side of the chuck outside the fixing block. A corresponding annular sliding groove for the fixing rod to slide is formed on the clamping block.

[0009] Preferably, a threaded hole is formed on the side of the clamping block away from the center of the chuck, and a counterweight block is threadedly connected in the threaded hole.

[0010] The beneficial effects of the present utility model are as follows:

[0011] Compared with the prior art, the present utility model is provided with a plurality of fixing blocks on the chuck. A rotating block is rotatably connected to each fixing block, and a clamping block is fixedly arranged on the rotating block by screws. During use, the high-speed rotation of the chuck causes the clamping block to generate a centrifugal force, which plays a clamping role on the spiral bevel gear. A rack is arranged on the side of the clamping block for clamping the spiral bevel gear, which can increase friction and clamping force, and the centrifugal force will increase with the increase of the rotation speed, and the clamping force on the spiral bevel gear will also be greater, which well solves the problem of insufficient clamping force in the current use process. At the same time, an annular sliding groove is formed on the clamping block, and the clamping block can only rotate around the center on the chuck by a certain amplitude, so that the clamping block will automatically loosen the clamping of the spiral bevel gear due to rotation when it stops rotating, and can clamp the spiral bevel gear again when starting to rotate, which is convenient for loading and unloading. A threaded hole is formed at the position of the clamping block away from the center of the chuck, and the required counterweight block can be added according to different spiral bevel gears to be clamped, making the whole device more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is another schematic structural diagram of the present utility model;

[0014] Figure 3 is an exploded structural diagram of the present utility model;

[0015] Figure 4 is a partial structural diagram of the clamping assembly.

[0016] In the figure: 1, chuck; 2, fixed shaft; 3, first groove; 4, center point; 5, clamping assembly; 6, fixing assembly; 7, clamping block; 8, rack; 9, fixing block; 10, rotating block; 11, circular groove; 12, slider; 13, annular clamping strip; 14, third groove; 15, screw; 16, fourth groove; 17, through hole; 18, fixing rod; 19, annular sliding groove; 20, threaded hole; 21, counterweight block. Detailed implementation mode

[0017] The following is a further specific description of the technical solution of the present utility model through embodiments and in combination with the attached Figures 1 - 4 structure shown.

[0018] Embodiment: A fixture for machining spiral bevel gears, including a chuck 1, a fixing shaft 2 for fixing is arranged on one side of the chuck 1, a first groove 3 is opened on the other side of the chuck 1, a center of the bottom of the first groove 3 is provided with a center point 4 for fixing the spiral bevel gear, and a plurality of clamping assemblies 5 arranged in a ring are arranged on the side surface of the chuck 1 outside the first groove 3. Each clamping assembly 5 is connected to the chuck 1 through a fixing assembly 6. The clamping assembly 5 includes a clamping block 7. One end of the clamping block 7 extends towards the center of the chuck 1. Rack teeth 8 are arranged on the opposite side surfaces of the plurality of clamping blocks 7. During implementation, the arrangement of the rack teeth 8 can increase the friction force between the clamping block 7 and the clamped spiral bevel gear, and increase the clamping force; one end of the clamping block 7 close to the center of the chuck 1 is smaller than the end far from the center of the chuck 1.

[0019] The fixing assembly 6 includes a fixing block 9 fixedly arranged on the chuck 1 and a rotating block 10 rotatably connected to the fixing block 9. A circular groove 11 is opened on the side surface of the fixing block 9 far from the chuck 1. A sliding block 12 that can rotate in the circular groove 11 is arranged on the side surface of the rotating block 10 in contact with the fixing block 9. An annular clamping strip 13 for preventing the sliding block 12 from falling off is arranged at the opening of the circular groove 11. A third groove 14 is opened on the side surface of the rotating block 10 far from the fixing block 9. The clamping block 7 and the rotating block 10 are fixedly connected through a screw 15. A fourth groove 16 is opened on the side surface of the clamping block 7 far from the chuck 1. A through hole 17 penetrating the clamping block 7 and for the screw 15 to pass through is opened at the bottom of the fourth groove 16. A fixing rod 18 perpendicular to the chuck 1 is arranged on the side surface of the chuck 1 outside the fixing block 9. An annular sliding groove 19 for the fixing rod 18 to slide is opened on the clamping block 7 correspondingly. During implementation, the annular sliding groove 19 on the clamping block 7 is sleeved on the fixing rod 18, and then the screw 15 is inserted into the fourth groove 16 to be fixedly connected to the rotating block 10. During use, the processing equipment drives the chuck 1 to rotate at a high speed. The arranged clamping block 7 generates a clamping force on the clamped spiral bevel gear under the action of centrifugal force, and as the rotation speed increases, the clamping force will also increase.

[0020] A screw hole 20 is opened on the side surface of the clamping block 7 far from the center of the chuck 1. A weight 21 is threadedly connected in the screw hole 20. During implementation, when the diameter of the clamped spiral bevel gear is large and the clamping force generated by the clamping block 7 under the action of centrifugal force is insufficient, a weight 21 needs to be added to the clamping block 7 to increase the clamping force, so that the applicability of the entire device is stronger.

[0021] Working principle of the utility model:

[0022] During use, the chuck 1 is installed on the processing equipment. The center point 4 is pressed against one end of the spiral bevel gear, and the other end is fixed through another chuck 1. Starting the processing equipment can start the use. When the diameter of the processed spiral bevel gear is large and the clamping force of the clamping block 7 is insufficient, it can be achieved by adding a counterweight 21. The structure of the utility model is simple and the operation is convenient. A plurality of fixing blocks 9 are arranged on the chuck 1. A rotating block 10 is rotatably connected to each fixing block 9, and a clamping block 7 is fixedly arranged on the rotating block 10 through a screw 15. During use, the high-speed rotation of the chuck 1 causes the clamping block 7 to generate centrifugal force, which plays a role in clamping the spiral bevel gear. A rack 8 is arranged on the side surface of the clamping block 7 for clamping the spiral bevel gear, which can increase friction and the clamping force. Moreover, as the rotation speed increases, the centrifugal force also increases, and the clamping force on the spiral bevel gear is also greater, which well solves the problem of insufficient clamping force in the current use process. At the same time, an annular sliding groove 19 is formed in the clamping block 7, and the clamping block 7 only rotates around the center on the chuck 1 by a certain amplitude. When the clamping block 7 stops rotating, it will automatically loosen the clamping of the spiral bevel gear due to the rotation, and can clamp the spiral bevel gear again when starting to rotate, which is convenient for loading and unloading. A screw hole 20 is formed in the clamping block 7 away from the center of the chuck 1. According to different spiral bevel gears to be clamped, the required counterweight 21 can be added, making the whole device more applicable.

[0023] Finally, it should be pointed out that the above embodiments are only relatively representative examples of the utility model. Obviously, the utility model is not limited to the above embodiments and can have many variations. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model shall be considered to fall within the protection scope of the utility model.

Claims

1. A fixture for processing spiral bevel gears, comprising a chuck (1), characterized in that: A fixing shaft (2) for fixing is arranged on one side of the chuck (1), and a first groove (3) is opened on the other side of the chuck (1). A top (4) for fixing the spiral bevel gear is arranged at the center of the bottom of the first groove (3). A plurality of clamping assemblies (5) arranged in a ring shape are arranged on the side of the chuck (1) outside the first groove (3). Each of the clamping assemblies (5) is connected to the chuck (1) via a fixing assembly (6). The clamping assembly (5) comprises a clamping block (7), one end of which extends toward the center of the chuck (1), and racks (8) are arranged on opposite sides of the plurality of clamping blocks (7).

2. A fixture for processing spiral bevel gears according to claim 1, characterized in that: The end of the clamping block (7) close to the center of the chuck (1) is smaller than the end far from the center of the chuck (1).

3. The fixture for processing spiral bevel gears according to claim 1, characterized in that: The fixing assembly (6) comprises a fixing block (9) fixedly arranged on the chuck (1) and a rotating block (10) rotatably connected to the fixing block (9); a circular groove (11) is provided on the side of the fixing block (9) away from the chuck (1); a sliding block (12) rotatable in the circular groove (11) is provided on the side of the rotating block (10) in contact with the fixing block (9); an annular clamping strip (13) is provided at the opening of the circular groove (11) to prevent the sliding block (12) from falling off; and a third groove (14) is provided on the side of the rotating block (10) away from the fixing block (9).

4. A fixture for processing spiral bevel gears according to claim 3, characterized in that: The clamping block (7) and the rotating block (10) are fixedly connected by means of a screw (15); a fourth groove (16) is provided on the side of the clamping block (7) away from the chuck (1); a through hole (17) penetrating the clamping block (7) and allowing the screw (15) to pass through is provided at the bottom of the fourth groove (16); a fixing rod (18) perpendicular to the chuck (1) is provided on the side of the chuck (1) located outside the fixing block (9); and a corresponding annular sliding groove (19) is provided on the clamping block (7) for the fixing rod (18) to slide.

5. The fixture for processing spiral bevel gears according to claim 1, characterized in that: A screw hole (20) is provided on the side of the clamping block (7) away from the center of the chuck (1), and a counterweight block (21) is connected to the inner thread of the screw hole (20).

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