CN208051070U - A new type of fixture for processing spiral bevel gears - Google Patents

Abstract

The utility model discloses a novel spiral bevel gear processing clamp, which comprises a workpiece box; the workpiece box comprises a box body, an A-axis rotary table arranged at the bottom of the box body, and a clamping assembly arranged on the A-axis rotary table; the clamping assembly comprises a lifting cylinder, a pull rod and a clamping block, wherein the pull rod is arranged at the telescopic end of the lifting cylinder through a locking nut, and the clamping block is hinged with the pull rod; a positioning block is movably arranged in the pull rod through a rotating pin; a limiting baffle is arranged at one end of the pull rod, which is far away from the lifting cylinder; the lower bottom surface of the limit baffle is provided with a telescopic cylinder; the telescopic end of the telescopic cylinder is connected with a push block; the two clamping blocks are symmetrically arranged on two sides of the pull rod, and an arc-shaped clamping groove is formed in the inner side of each clamping block; the novel spiral bevel gear machining clamp has the advantages of simple structure and convenient operation; the arc-shaped clamping groove is formed in the inner side of the clamping block, so that clamping operation can be realized, and the spiral bevel gear cannot be damaged in the clamping process.

Description

A new type of fixture for processing spiral bevel gears

technical field

The utility model relates to a gear processing device, in particular to a novel spiral bevel gear processing fixture, which belongs to the technical field of mechanical processing equipment.

Background technique

Spiral bevel gears are widely used in the fields of aviation, vehicles and lathes because of their strong load-carrying capacity, stable transmission and high transmission efficiency. Difficult, the existing technology mostly adopts the hole positioning structure, the structure is easy to install and the positioning is accurate, but when the workpiece is disassembled after machining, a negative pressure is formed due to the axial displacement of the workpiece, and it is difficult to remove the workpiece from the chuck structure; However, although the workpiece is not stuck after the processing of the fixture using the chuck, the tension of the chuck is achieved by manual wheel, which is inefficient, time-consuming and laborious. In addition, it is easy to cause the workpiece to slip due to the unstable grip of the chuck. Damaged gears due to incorrect machining.

Contents of the invention

In order to solve the above problems, the utility model proposes a novel spiral bevel gear processing fixture, which can realize the clamping operation without damaging the spiral bevel gear during the clamping process, and the processing effect is good.

The novel spiral bevel gear processing fixture of the utility model includes a workpiece box; the workpiece box includes a box body, an A-axis turntable installed at the bottom of the box body, and a clamping assembly installed on the A-axis turntable; The clamping assembly includes a lifting cylinder, a pull rod installed on the telescopic end of the lifting cylinder through a lock nut, and a clamping block hinged with the pull rod; a positioning block is installed inside the pull rod through a re-pin movement; the pull rod is away from the lifting cylinder One end is equipped with a limit baffle; the bottom surface of the limit baffle is equipped with a telescopic cylinder; the telescopic end of the telescopic cylinder is connected with a push block; the push block is movable above the positioning block; the two clamping blocks It is symmetrically arranged on both sides of the pull rod, and each of the clamping blocks is provided with an arc-shaped clamping groove; when clamping, place the workpiece (spiral bevel gear) to be processed on the follower plate, and the lifting cylinder moves to push The pull rod rises, so that the pull rod and the limit baffle pass through the spiral bevel gear and are located above the spiral bevel gear; then, the telescopic cylinder moves to drive the push block down, and uses the push block to push the positioning block to rotate, thereby moving the clamping block from the pull rod Then, the lifting cylinder drives the pull rod down, so that the arc-shaped clamping groove of the clamping block fits with the boss in the center of the spiral bevel gear. At this time, the telescopic cylinder drives the push block to rise, and the lifting cylinder continues to drive the pull rod Lower until the arc-shaped clamping groove of the clamping block is pressed against the boss in the center of the spiral bevel gear, and the clamping is completed.

Further, the side of the workpiece box is movably installed on the machine tool through the B-axis turntable.

Further, the top of the box is equipped with a follower plate for placing workpieces to be processed through bearings; before clamping, the limit baffle is arranged inside the follower plate.

Further, grooves for installing clamping blocks are provided on both sides of the pull rod along its axial direction; before clamping, the clamping blocks are located in the grooves on both sides of the pull rod, and the inner side wall of the clamping block is aligned with the positioning The block is tightly attached to its outer wall.

Further, a lower limit block is installed on the side of the pull rod away from the limit baffle.

Further, the lifting cylinder is fixed on the turntable of the A-axis turntable.

Compared with the prior art, the utility model has a novel spiral bevel gear processing fixture of the utility model, which has a simple structure and is easy to operate; a limit baffle is set to limit the rotation angle of the clamping block; The arc-shaped clamping groove can realize the clamping operation without damaging the spiral bevel gear during the clamping process, and the processing effect is good.

Description of drawings

Fig. 1 is the structural representation of the workpiece case of the present utility model.

Fig. 2 is a structural schematic diagram of the clamping assembly in the clamping state of the present invention.

The parts in the drawings are marked as: 1-box, 2-A-axis rotary table, 3-clamping assembly, 31-lifting cylinder, 32-lock nut, 33-tie rod, 34-clamping block, 35-positioning Block, 36-limit baffle, 37-telescopic cylinder, 38-push block, 39-arc clamping groove, 310-groove, 311-lower limit block, 312-revolving pin, 4-B axis turntable, 5-bearing, 6-follower plate.

Detailed ways

The new spiral bevel gear processing fixture shown in Figure 1 and Figure 2 includes a workpiece box; the workpiece box includes a box body 1, an A-axis rotary table 2 installed at the bottom of the box body 1, and an A-axis rotary table 2 on the clamping assembly 3; the clamping assembly 3 includes a lifting cylinder 31, and a pull rod 33 installed on the telescopic end of the lifting cylinder 31 through a lock nut 32, and a clamping block 34 hinged with the pull rod 33; the pull rod The inside of 33 is equipped with a positioning block 35 through the revolving pin 312; the limit baffle 36 is installed on the end of the pull rod 33 which is away from the lifting cylinder 31; the bottom surface of the limit baffle 36 is equipped with a telescopic cylinder 37; 37, its telescoping end is connected with a push block 38; the push block 38 is movably arranged above the positioning block 35; Arc clamping groove 39 is arranged.

Its side of described workpiece box is installed on the lathe through B-axis rotary table 4 movably.

The top of the box body 1 is installed with a follower plate 6 for placing workpieces to be processed through bearings 5; before clamping, the limit baffle 36 is arranged inside the follower plate 6.

Both sides of the pull rod 33 are provided with a groove 310 for installing the clamping block 34 along its axial direction; before clamping, the clamping block 34 is located in the groove 310 on both sides of the pull rod 33, and the clamping block 34 is The inner sidewall is in close contact with the outer sidewall of the positioning block 35 .

A lower limit block 311 is installed on the side of the pull rod 33 away from the limit baffle 36 .

The lifting cylinder 31 is fixed on the turntable of the A-axis turntable 2 .

The novel spiral bevel gear processing fixture of the utility model, when clamping, place the workpiece (spiral bevel gear) to be processed on the follower plate, and the lifting cylinder acts to push the pull rod up, so that the pull rod and the limit baffle pass through the spiral cone The gear is located above the spiral bevel gear; then, the telescopic cylinder acts to drive the push block down, and uses the push block to push the positioning block to rotate, thereby pushing the clamping block out of the groove of the tie rod; after that, the lifting cylinder drives the pull rod down, Make the arc-shaped clamping groove of the clamping block fit with the boss in the center of the spiral bevel gear. At this time, the telescopic cylinder drives the push block to rise, and the lifting cylinder continues to drive the pull rod down until the arc-shaped clamping groove of the clamping block meets the spiral bevel gear. The boss in the center of the bevel gear is pressed to complete the clamping; the limit baffle is set to limit the rotation angle of the clamping block; the clamping operation can be realized by setting an arc-shaped clamping groove inside the clamping block, And the spiral bevel gear will not be damaged during the clamping process, and the processing effect is good.

The above-mentioned embodiments are only preferred implementation modes of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the utility model are all included in the scope of the patent application of the utility model Inside.

Claims (6)

1. A new type of spiral bevel gear processing fixture, including a workpiece box; the workpiece box includes a box body (1), and an A-axis rotary table (2) installed at the bottom of the box body (1), and an A-axis rotary table (2). The clamping component (3) on the platform (2); it is characterized in that: the clamping component (3) includes a lifting cylinder (31), and is installed on the telescopic end of the lifting cylinder (31) through a lock nut (32). The pull rod (33), and the clamping block (34) hinged with the pull rod (33); the positioning block (35) is installed inside the pull rod (33) through the rotation pin (312); the pull rod (33) deviates from A limit baffle (36) is installed at one end of the lifting cylinder (31); a telescopic cylinder (37) is installed on the bottom surface of the limit baffle (36); a telescopic end of the telescopic cylinder (37) is connected with a push block ( 38); the push block (38) is movable above the positioning block (35); the two clamping blocks (34) are symmetrically arranged on both sides of the pull rod (33), and each of the clamping blocks (34) Arc-shaped clamping grooves (39) are arranged on the inner sides. 2. The new fixture for processing spiral bevel gears according to claim 1, characterized in that: the side of the workpiece box is movably installed on the machine tool through the B-axis rotary table (4). 3. The new-type spiral bevel gear processing fixture according to claim 1, characterized in that: the top of the box (1) is equipped with a follower plate (6) for placing the workpiece to be processed through a bearing (5); Before, the limit baffle (36) is arranged inside the follower plate (6). 4. The novel spiral bevel gear processing fixture according to claim 1, characterized in that: the two sides of the tie rod (33) are provided with grooves (310) for installing the clamping block (34) along its axial direction; Before holding, the clamping block (34) is located in the grooves (310) on both sides of the pull rod (33), and the inner side wall of the clamping block (34) is in close contact with the outer side wall of the positioning block (35). 5. The novel spiral bevel gear processing jig according to claim 1, characterized in that: a lower limit block (311) is installed on the side of the pull rod (33) away from the limit baffle (36). 6. The novel spiral bevel gear processing fixture according to claim 1, characterized in that: the lifting cylinder (31) is fixed on the turntable of the A-axis rotary table (2).