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Fixture and method for electric discharge machining of special-shaped hole

A technology of EDM and special-shaped holes, which is applied in the field of EDM fixtures for special-shaped holes, can solve the problems that the accuracy and consistency of holes are difficult to guarantee, the difficulty of repeated positioning in step-by-step processing, and the impact on processing efficiency and consistency. Good quality and consistency, high dimensional accuracy and stability, low process difficulty and low cost

Active Publication Date: 2022-03-04
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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Problems solved by technology

[0006] The embodiment of the present invention provides a special-shaped hole EDM fixture and method. By improving the original single-structure electrode into a combined electrode with a special-shaped electrode and a cylindrical electrode, it solves the need for frequent replacement and adjustment of traditional electrodes, which affects processing efficiency and consistency. , Step-by-step processing and repeated positioning are difficult, the accuracy and consistency of hole positions are difficult to guarantee, and the technical problems of long production preparation time and low processing efficiency

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  • Fixture and method for electric discharge machining of special-shaped hole
  • Fixture and method for electric discharge machining of special-shaped hole
  • Fixture and method for electric discharge machining of special-shaped hole

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Embodiment Construction

[0035] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The detailed description and accompanying drawings of the following embodiments are used to illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments, without departing from the spirit of the present invention Any modification, substitution and improvement of parts, components and connection methods are covered under.

[0036] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0037] figure 1 It is a schematic structural diagram of a special-shaped hole electric discharg...

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Abstract

The invention relates to a jig and method for electric discharge machining of special-shaped holes. The fixture includes: a locking sealing sleeve, a special-shaped electrode fixing sleeve, a special-shaped electrode and a cylindrical electrode; one end of the locking sealing sleeve is provided with a fixing sleeve, one end of the cylindrical electrode is set in the fixing sleeve, and the other end of the locking sealing sleeve is used for connecting EDM processing equipment; both the special-shaped electrode fixing sleeve and the special-shaped electrode are hollow, one end of the special-shaped electrode is sleeved in the special-shaped electrode fixing sleeve, and the other end protrudes from the special-shaped electrode fixing sleeve to form the processing end of the special-shaped electrode; the special-shaped electrode is fixed The end of the sleeve away from the special-shaped electrode is set with a cylindrical electrode and is movably connected with the locking sealing sleeve. The special-shaped electrode fixing sleeve moves back and forth along the extension direction of the cylindrical electrode. The cylindrical electrode passes through the special-shaped electrode fixing sleeve and the special-shaped electrode, and the cylindrical electrode protrudes out of the special-shaped The electrode processing end forms a cylindrical electrode processing end.

Description

technical field [0001] The invention relates to the field of electric discharge machining of special-shaped holes, in particular to a jig and method for electric discharge machining of special-shaped holes. Background technique [0002] EDM technology is one of the special processing technologies. It mainly uses the high-temperature ablation phenomenon generated by the non-contact pulse EDM between the tool and the workpiece to remove the metal of the workpiece to achieve the purpose of processing a specific structure. It is widely used in various Machining of difficult-to-cut materials and complex feature structures. At present, military and civilian parts such as aero-engine turbine blades have been designed with special-shaped holes. The special-shaped holes are composed of two parts: a special-shaped end and a round hole end, which are densely distributed on the complex space surface. Dimensional accuracy is required to be high, and conventional methods cannot be proces...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H9/14
CPCB23H9/14
Inventor 孙超傅军英翟士民田冠远黄明涛
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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