Electromachining tool for check ring type parts

Abstract

The utility model relates to an electromachining tool for retainer ring parts, which comprises a base and is technically characterized in that a stepped circular groove is formed in the center of the upper surface of the base and consists of an upper wide-diameter section and a lower narrow-diameter section, and a circular gland is buckled at the groove bottom of the lower narrow-diameter section of the stepped circular groove; the upper portion of the circular gland extends upwards to the height of the upper surface of the base, an annular clamping groove is formed between the outer peripheral wall of the upper portion of the circular gland and the inner peripheral wall of the upper wide-diameter section, the width of the annular clamping groove is equal to that of a check ring part to be machined, and a longitudinal positioning through hole is formed in the groove bottom of the upper wide-diameter section of the stepped circular groove. And positioning pins penetrate through the longitudinal positioning through holes. According to the tool, the problem of poor product consistency is solved, stable part machining is guaranteed, the percent of pass is high, replaceability is high, and meanwhile the production efficiency of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manufacturing parts of aviation engines, in particular to an electrical machining tool for retaining ring parts. Background Art

[0002] Retaining ring parts are widely used in aircraft engine combustion chambers, transmission systems, sealing components and other parts. High-temperature alloy materials are usually selected. In order to cope with complex temperature environments and stress conditions, each part needs to be heat treated once or multiple times. Aircraft engines have strict requirements on part dimensions, but the parts after heat treatment will have a certain degree of dimensional deformation, which is not conducive to subsequent electrical processing, such as the positioning and processing of the R angles and functional holes at both ends of the retaining ring, resulting in poor product consistency. Utility Model Content

[0003] The purpose of the utility model is to provide a simple-structured and reliable-use electrical machining tool for retaining ring parts, solve the problem of poor product consistency, ensure stable part processing, high pass rate, strong substitutability, and at the same time improve the production efficiency of the product.

[0004] The technical solution of the utility model is:

[0005] A tool for electro-machining retaining ring parts, including a base, and its technical highlights are: a stepped circular groove is provided in the center of the upper surface of the base, the stepped circular groove is composed of an upper wide diameter section and a lower narrow diameter section, a circular pressure cover is buckled on the bottom of the lower narrow diameter section of the stepped circular groove, the upper part of the circular pressure cover extends upward to the height of the upper surface of the base, an annular clamping groove is formed between the upper outer peripheral wall of the circular pressure cover and the inner peripheral wall of the upper wide diameter section, the width of the annular clamping groove is equal to the width of the retaining ring part to be processed, and a longitudinal positioning through hole is provided on the bottom of the upper wide diameter section of the stepped circular groove, and the longitudinal positioning through hole is used to penetrate a positioning pin.

[0006] In the above-mentioned electro-machining tooling for retaining ring parts, the top end of the locating pin protrudes from the bottom of the groove of the upper wide diameter section by a height equal to the thickness of the retaining ring part, and the diameter of the locating pin is consistent with the diameter of the functional hole of the retaining ring part to ensure accurate positioning after installation.

[0007] In the above-mentioned electromachining tooling for retaining ring parts, the base is cylindrical and a positioning plane is provided on its outer peripheral wall.

[0008] In the above-mentioned electro-machining tooling for retaining ring parts, the center of the base and the center of the circular gland are both provided with weight-reducing through holes.

[0009] In the above-mentioned electro-machining tooling for retaining ring parts, the inner diameter of the lower narrow diameter section of the stepped circular groove is equal to the outer diameter of the circular gland.

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

[0011] 1. When in use, the annular clamping groove limits the radial deformation of the retaining ring parts during the electrical machining process, which is conducive to positioning the two ends of the retaining ring parts and processing the R angle and functional holes, ensuring good product consistency, solving the problem of poor product consistency, ensuring stable part processing, high production quality, high pass rate, strong substitutability, and at the same time improving the production efficiency of the product.

[0012] 2. After completing the processing of the functional hole at one end, turn over the retaining ring part. Not only use the annular clamping groove to clamp the retaining ring part, but also use the locating pin to locate the functional hole at one end, which is conducive to processing the functional hole at the other end and ensuring that the orientation of the two functional holes meets the design requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 Bottom view of the (excluding retaining ring parts).

[0015] In the figure: 1. base, 101. positioning plane, 102. upper wide diameter section, 103. lower narrow diameter section groove, 2. retaining ring parts, 201. functional hole, 202. R angle, 3. round pressure cover, 4. positioning pin. DETAILED DESCRIPTION

[0016] The utility model is described in detail according to the accompanying drawings of the specification.

[0017] like Figure 1 , Figure 2 As shown, the electro-machining tooling for retaining ring parts includes a base 1.

[0018] A stepped circular groove is provided at the center of the upper surface of the base 1, and the stepped circular groove is composed of an upper wide diameter section 102 and a lower narrow diameter section 103. A circular pressure cover 3 is buckled at the bottom of the lower narrow diameter section groove 103 of the stepped circular groove, and the upper part of the circular pressure cover 3 extends upward to the height of the upper surface of the base 1. An annular clamping groove is formed between the upper outer peripheral wall of the circular pressure cover 3 and the inner peripheral wall of the upper wide diameter section 102, and the width of the annular clamping groove is equal to the width of the retaining ring part 2 to be processed. A longitudinal positioning through hole is provided on the bottom of the upper wide diameter section 102 of the stepped circular groove, and the longitudinal positioning through hole is used to penetrate the positioning pin 4.

[0019] In this embodiment, the top of the positioning pin 4 protrudes from the bottom of the groove of the upper wide diameter section 102 by a height equal to the thickness of the retaining ring part 2, and the diameter of the positioning pin 4 is consistent with the aperture size of the functional hole 201 of the retaining ring part 2 to ensure accurate positioning after installation. The inner diameter of the lower narrow diameter section 103 of the stepped circular groove is equal to the outer diameter of the circular gland 3. The base 1 is cylindrical, and a positioning plane 101 is provided on its outer peripheral wall. A weight-reducing through hole is provided at the center of the base 1 and the center of the circular gland 3.

[0020] Working principle:

[0021] 1. Place the retaining ring part 2 to be processed (a coiled structure like a spring with more than one circle) at the bottom of the upper wide diameter section 102 of the stepped circular groove, and then buckle the circular pressure cover 3 into the lower narrow diameter section 103 of the stepped circular groove. The annular clamping groove formed by the circular pressure cover 3 and the upper wide diameter section 102 limits the radial deformation of the retaining ring part 2.

[0022] 2. After the R angle 202 and the functional hole 201 (used to remove the retaining ring part in application) at the upper end of the retaining ring part 2 are processed, the retaining ring part 2 is removed, turned over and positioned in the annular clamping groove again.

[0023] 3. At this time, the top end of the positioning pin 4 passes through the processed functional hole 201, and realizes the azimuth positioning of the retaining ring part 2 relative to the center line of the tooling, so as to facilitate the processing of the R angle and the functional hole at the other end of the retaining ring part 2, and ensure the azimuth angle of the two functional holes.

[0024] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A tool for electro-machining of retaining ring parts, comprising a base, characterized in that: A stepped circular groove is provided at the center of the upper surface of the base, and the stepped circular groove is composed of an upper wide diameter section and a lower narrow diameter section. A circular pressure cover is buckled on the bottom of the lower narrow diameter section of the stepped circular groove, and the upper part of the circular pressure cover extends upward to the height of the upper surface of the base. An annular clamping groove is formed between the upper outer peripheral wall of the circular pressure cover and the inner peripheral wall of the upper wide diameter section. The width of the annular clamping groove is equal to the width of the retaining ring part to be processed. A longitudinal positioning through hole is provided on the bottom of the upper wide diameter section of the stepped circular groove, and the longitudinal positioning through hole is used to penetrate a positioning pin.

2. The electrical machining tool for retaining ring parts according to claim 1, characterized in that: The top end of the positioning pin protrudes from the bottom of the groove of the upper wide diameter section by a height equal to the thickness of the retaining ring part, and the diameter of the positioning pin is consistent with the diameter of the functional hole of the retaining ring part.

3. The electrical machining tool for retaining ring parts according to claim 1, characterized in that: The base is cylindrical, and a positioning plane is arranged on the outer peripheral wall thereof.

4. The electrical machining tool for retaining ring parts according to claim 1, characterized in that: The center of the base and the center of the circular gland are both provided with weight-reducing through holes.

5. The electro-machining tooling for retaining ring parts according to claim 1 is characterized in that: The inner diameter of the lower narrow diameter section of the stepped circular groove is equal to the outer diameter of the circular gland.

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