CN205020975U - Thin wall ring gear class part gear shaping anchor clamps - Google Patents

Abstract

The utility model relates to a gear-shaping fixture for thin-walled inner gear ring parts, which comprises T-shaped bolts, washers, nuts, glands, positioning plates, hexagonal nuts, flat washers, stud bolts, pad irons, and hexagon socket head bolts. , Clamping plate, and positioning plate are fixed to the worktable of the gear shaping machine tool through T-shaped bolts, flat washers, and hexagonal nuts, and the outer circle of the workpiece is positioned with a small gap between the inner stop of the positioning plate. The inner step of the gland is pressed against the upper surface of the workpiece, the inner hole of the gland is matched with the outer circle of the workpiece, and the lower edge of the gland is pressed on the positioning plate through hexagonal nuts, flat washers, stud bolts, shims, and pressure plates. The utility model is simple in structure, convenient and reliable, and low in cost, not only compresses the workpiece, but also reduces the deformation of the workpiece and affects the processing accuracy, so it has a good application prospect in machining enterprises.

Description

Gear Shaping Fixture for Thin-walled Internal Gear Parts

technical field

The utility model relates to the technical field of gear shaping fixtures, in particular to a gear shaping fixture for thin-walled internal ring gear parts.

Background technique

There are wheel-side reduction mechanisms in the drive axles of many heavy trucks and engineering vehicles, and the ring gear parts are indispensable in the wheel-side reduction mechanisms. The tooth blank structure of this part is a thin-walled ring. During the gear shaping process, the workpiece is greatly deformed under the clamping force of the conventional fixture, which makes it difficult to guarantee the precision of the processed inner ring gear and fail to meet the product quality requirements.

Contents of the invention

The purpose of the utility model is to overcome the above-mentioned defects, and provide a simple-structure, convenient, reliable, and low-cost thin-walled inner ring gear-type parts gear-sharpening fixture.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a kind of thin-walled inner ring gear parts gear-shaping fixture, including a T-shaped bolt 1, a washer 2, a nut 3, a gland 4, a positioning plate 5, and a hexagonal nut 6 , flat washer 7, stud bolt 8, pad iron 9, hexagon socket head cap bolt 10, pressure plate 11, positioning plate 5 is fixed to the gear shaping machine table through T-shaped bolt 1, flat washer 2, hexagonal nut 3, and the workpiece 12 outer circles coordinate positioning with the small gap in the spigot 5 of the positioning disc. The inner step of the gland 4 is pressed against the upper end surface of the workpiece 12, and the inner hole of the gland 4 is in clearance fit with the outer circle of the workpiece 12. The lower end edge of the gland 4 is pressed on the positioning disc 5 through the hexagonal nut 6, the flat washer 7, the stud bolt 8, the parallel iron 9, and the pressing plate 11.

As a preferred solution, the fit gap between the inner hole of the gland 4 and the outer circle of the workpiece 12 is 1mm.

As a preferred solution, waist-shaped grooves 13 are uniformly opened on the outer surface of the gland 4 .

As a preferred solution, the number of pressing plates 11 is three.

The gland of the utility model adopts a structure with thicker upper and lower walls and a thinner middle wall, and a waist-shaped groove is evenly opened on the circumference, which ensures that the inner steps of the gland are evenly pressed on the upper end surface of the inner gear ring, so that the inner gear ring The upper end bears the pressing force evenly, which not only compresses the workpiece, but also reduces the deformation of the workpiece and affects the processing accuracy.

Description of drawings

Figure 1 is a schematic diagram of the overall composition of the utility model clamp.

FIG. 2 is a top view of FIG. 1 .

In the figure, 1—T-shaped bolt, 2—washer, 3—nut, 4—gland, 5—positioning plate, 6—hexagonal nut, 7—flat washer, 8—stud bolt, 9—horn, 10—inner Hexagon socket head bolt, 11—pressing plate, 12—workpiece.

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model will be further described.

As shown in Figures 1 and 2, the gear shaping fixture for thin-walled internal gear parts includes T-shaped bolts 1, washers 2, nuts 3, glands 4, positioning discs 5, hexagonal nuts 6, flat washers 7, and stud bolts 8 , pad iron 9, hexagon socket head bolt 10, pressure plate 11, positioning plate 5 is fixedly connected to the workbench of the gear shaping machine tool through T-shaped bolt 1, washer 2, nut 3, and the outer circle of workpiece 12 is smaller than the inner stop of positioning plate 5 Clearance fit positioning. The quantity of pressing plate 11 is 3 pieces.

The inner step of the gland 4 is pressed against the upper end surface of the workpiece 12, and the inner hole of the gland 4 is matched with the outer circle of the workpiece 12 to avoid interference with the accurate positioning of the workpiece. The matching clearance is preferably 1 mm. Waist-shaped grooves 13 are evenly opened on the outer surface of the gland 4 . The lower end edge of the gland 4 is pressed against the positioning plate 5 through the hexagonal nut 6, the flat washer 7, the stud bolt 8, the pad iron 9, and the pressure plate 11, so that the upper end of the inner gear ring bears the pressing force evenly, and the workpiece is pressed tightly. It also avoids the influence of workpiece deformation on machining accuracy.

The use steps of the fixture of the utility model are as follows: ①Install the fixture on the workbench of the gear shaping machine tool, and use the dial indicator to correct the positioning plate. The radial runout error of the inner stop is within 0.01mm, and the runout error of the end face of the inner stop is within 0.01mm. , Tighten the hexagonal nut; ② Put the workpiece tooth blank after finishing turning into the inner stop of the fixture positioning plate; ③ Put the gland cover on the inner gear ring of the workpiece; ④ Press the three pressure plates on the lower edge of the gland; ⑤Tighten the three hexagonal nuts evenly diagonally; ⑥After the gear shaping of the inner ring gear of the workpiece is completed, loosen the three hexagonal nuts, move the three pressure plates backward, remove the gland, and then take out the workpiece after gear shaping to complete a Working cycle for gear shaping.

The utility model is not limited to the above-mentioned embodiments, and various changes can be made without departing from the gist of the utility model within the scope of knowledge of those skilled in the art.

Claims (4)

1. a thin-wall annular gear class part gear-shaping clamp, comprise tommyhead bolt (1), packing ring (2), nut (3), gland (4), positioning disk (5), six square nuts (6), plain washer (7), stud (8), parallels (9), interior hexagonal cylindrical hook bolt (10), pressing plate (11), it is characterized in that: described positioning disk (5) is affixed by tommyhead bolt (1), packing ring (2), nut (3) and shaping machine workbench, and workpiece (12) cylindrical coordinates with positioning disk (5) inner stopper small―gap suture locates; Gland (4) interior step is pressed in workpiece (12) upper surface, gland (4) endoporus and workpiece (12) cylindrical matched in clearance; Gland (4) lower edge is pressed on positioning disk (5) by six square nuts (6), plain washer (7), stud (8), parallels (9), pressing plate (11).

2. thin-wall annular gear class part gear-shaping clamp according to claim 1, is characterized in that: the fit clearance of described gland (4) endoporus and workpiece (12) cylindrical is 1mm.

3. thin-wall annular gear class part gear-shaping clamp according to claim 1, is characterized in that: on the periphery of described gland (4), evenly offer kidney slot (13).

4. thin-wall annular gear class part gear-shaping clamp according to claim 1, is characterized in that: the quantity of described pressing plate (11) is 3 pieces.