Gas turbine retaining ring positioning, centering and clamping device

Abstract

The utility model provides a gas turbine retaining ring positioning and centering clamping device. The gas turbine retaining ring positioning and centering clamping device comprises a jackscrew, a positioning seat, a clamp body, a positioning claw, a check block and a fixing screw. The positioning seat is connected with the clamp body through a fixing screw; two bosses are arranged on the positioning seat, grooves in the bottom of the retaining ring are clamped at the bosses when the retaining ring is installed, the jackscrews guarantee that the positioning claws abut against the retaining ring, and the radiating surface of the retaining ring is machined after threading. According to the utility model, the defects in the prior art are overcome, the bottom boss is adopted for positioning, and compared with the original direct processing of the radiating surface, the symmetry degree of the retaining ring can be better ensured. Alignment is easy and convenient, the percent of pass of part products is increased, and the production efficiency of parts is improved.

Description

Technical Field

[0001] This utility model belongs to the field of tooling, specifically relating to a positioning and centering clamping device for a gas turbine retaining ring. Background Technology

[0002] The gas turbine retaining ring is fitted to the gas turbine's moving blades to ensure airflow during unit operation. See the simplified diagram of the retaining ring structure for details. Figure 1 The retaining ring is made of high-temperature alloy K648, which has high hardness. Wire EDM is typically used when machining the radial surfaces on both sides. Therefore, it is necessary to ensure a secure clamping and a convenient reference surface for alignment during machining. The ribs must also be symmetrically distributed during machining. This fixture was designed for clamping and machining.

[0003] Traditional clamps are difficult to align and cannot guarantee the symmetry of the product after the retaining ring is cut. Utility Model Content

[0004] The purpose of this invention is to provide a positioning and centering clamping device for gas turbine retaining rings, which solves the problem of asymmetrical wire cutting of retaining rings and improves the precision of the product.

[0005] A gas turbine retaining ring positioning and clamping device includes a set screw, a positioning seat, a clamping body, a positioning claw, a stop block, and a fixing screw; the positioning seat and the clamping body are connected by the fixing screw; the positioning seat is provided with two bosses, and when the retaining ring is installed, the bottom groove of the retaining ring is locked at the bosses, the set screw ensures that the positioning claw is pressed tightly against the retaining ring, and the radial surface of the retaining ring is machined after the set screw is threaded.

[0006] Furthermore, the spacing between the positioning seat bosses is 10(+0.1 / 0)mm.

[0007] Furthermore, the top block of the clamp body has a size of R954.5mm.

[0008] Furthermore, the positioning claw has four claw-shaped structures that press against the protective ring.

[0009] Furthermore, the fixture body is provided with a window, through which a feeler gauge is inserted to adjust the retaining ring so that the retaining ring boss does not move and the boss is exactly in the middle position.

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

[0011] This invention overcomes the shortcomings of existing technologies by using a bottom boss for positioning, which better ensures the symmetry of the retaining ring compared to the original direct machining of the radial surface. Alignment is simplified, improving the pass rate of parts and increasing production efficiency. Attached Figure Description

[0012] Figure 1 A three-dimensional view of the retaining ring processed according to this utility model;

[0013] Figure 2 This is a front view of the overall structure of the retaining ring positioning and centering clamping device of this utility model;

[0014] Figure 3 This is a top view of the overall structure of the retaining ring positioning and centering clamping device of this utility model;

[0015] Figure 4 This is a structural diagram of the positioning seat of the retaining ring positioning and centering clamping device of this utility model; Detailed Implementation

[0016] The present invention will now be further described with reference to the accompanying drawings.

[0017] like Figures 1-4 As shown, a gas turbine retaining ring positioning and centering clamping device includes a set screw 1, a positioning seat 2, a clamping body 3, a positioning claw 4, a stop block 5, and fixing screws 6. The positioning seat 2 is connected to the clamping body 3 by two fixing screws 6. The positioning seat 2 has two bosses. When installing the retaining ring, the bottom groove of the retaining ring is precisely engaged with the bosses. A feeler gauge is inserted at the retaining ring through the window of the clamping body 3 to ensure assembly. The positioning claw 4 slides on the stop block 5. The set screw 1 is tightened to ensure that the positioning claw 4 is tightly pressed against the retaining ring. The fixture is placed horizontally on a wire EDM machine. After the end face is aligned and leveled, the pressure plate is pressed tight. After the wire is threaded into the inner cavity, it is pressed... Figure 4 Process the radial surface of the retaining ring.

[0018] Working principle: During use, the symmetrical position of the retaining ring is ensured by the cooperation between the boss of the positioning seat 2 and the groove of the retaining ring itself. The symmetry is finely adjusted by inserting a feeler gauge into the groove position through the window of the fixture body. After positioning, the retaining ring is tightened by the positioning claw in a point contact manner. After clamping, it is fixed on the wire EDM machine for wire cutting.

[0019] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A gas turbine retaining ring positioning and centering clamping device, characterized in that, It includes a set screw (1), a positioning seat (2), a clamp body (3), a positioning claw (4), a stop block (5), and a fixing screw (6); the positioning seat (2) is connected to the clamp body (3) by the fixing screw (6); the positioning seat (2) is provided with two bosses, and when the retaining ring is installed, the bottom groove of the retaining ring is stuck at the bosses. The set screw (1) ensures that the positioning claw (4) presses against the retaining ring, and the radial surface of the retaining ring is machined after the wire is threaded.

2. The gas turbine retaining ring positioning and centering clamping device according to claim 1, characterized in that, The spacing between the bosses of the positioning seat (2) is 10mm.

3. The gas turbine retaining ring positioning and centering clamping device according to claim 1, characterized in that, The top block of the clamp body (3) has a size of R954.5mm.

4. The gas turbine retaining ring positioning and centering clamping device according to claim 1, characterized in that, The positioning claw (4) has four claw-shaped structures that press against the protective ring.

5. The gas turbine retaining ring positioning and centering clamping device according to claim 1, characterized in that, The fixture body (3) is provided with a window, through which the wearer can observe and insert a feeler gauge to adjust the wearer ring so that the wearer ring boss does not move and the boss is exactly in the middle position.

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