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Blade profile electric spark shaping machining method for integral closed blade ring and clamp thereof as well as electrode

A forming processing and EDM technology, applied in electric processing equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of cutting tool, processing chatter, narrow air flow channel, and difficult machining, and achieve positioning accuracy and repeatability Guaranteed positioning accuracy, improved processing efficiency, and improved processing accuracy

Pending Publication Date: 2018-12-14
西安西航集团莱特航空制造技术有限公司
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Problems solved by technology

[0002] The integral closed leaf ring is a new type of part structure used in advanced aircraft engines. It is an aero-engine component with a complex overall structure. Most of these parts have a deep twisted leaf shape as a typical structure. more difficult
Especially the radius of the blade root is small, it is extremely difficult to clean the root, and the chatter problem is serious when the tool is connected and processed. The rigidity of the milling cutter, the diameter of the blade and the milling angle will be extremely restricted by conventional milling, making five-axis milling almost impossible. can not achieve

Method used

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  • Blade profile electric spark shaping machining method for integral closed blade ring and clamp thereof as well as electrode
  • Blade profile electric spark shaping machining method for integral closed blade ring and clamp thereof as well as electrode
  • Blade profile electric spark shaping machining method for integral closed blade ring and clamp thereof as well as electrode

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] The invention provides a method for EDM processing of an integral closed leaf ring with the following steps:

[0037] 1) Clamp the leaf ring to be processed on the workbench of the EDM machine tool, press it tightly and align it;

[0038] 2) Clamp the rough machining electrode on the electrode fixture, and then clamp it as a whole on the spindle head of the EDM machine tool, roughly machine the airflow channel 1 according to the requirements of the drawing for the leaf ring, and then remove the rough machining electrode from the electrode fixture. Replace it with a finishing electrode and f...

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Abstract

The invention belongs to the technical field of special machining, in particular to a blade profile electric spark shaping machining method for an integral closed blade ring and a clamp thereof as well as an electrode. The method depends on an electrode profile to guarantee blades and an airflow channel profile, and the method is not limited by the complexity degree of the blade profile; by usinga molding electrode, the multi-axis linkage electric spark shaping machining can be realized on an electric spark shaping machine by cooperating with an electrode clamp; the method comprises the following steps that the to-be-machined blade ring is clamped on a workbench of the electric spark shaping machine, and tight compressing and aligning are carried out; the rough machining electrode is clamped on the electrode clamp; then is integrally clamped on a main shaft head of the electric spark shaping machine, rough machining of the airflow channel is carried out on the blade ring according toa drawing; and then the rough machining electrode on the electrode clamp is detached, a finish machining electrode substitutes for the rough machining electrode to carried out finish machining on theairflow channel, and the machining of the integral closed blade ring is completed; and the machined blade ring is taken down from the workbench of the electric spark shaping machine. According to themethod, the electrode clamp and the electrode with a special structure are adopted to complete.

Description

technical field [0001] The invention belongs to the technical field of special processing, and in particular relates to a leaf-shaped electric discharge forming processing method for an integral closed leaf ring, as well as a clamp and an electrode. Background technique [0002] The integral closed leaf ring is a new type of part structure used in advanced aircraft engines. It is an aero-engine component with a complex overall structure. Most of these parts have a deep twisted leaf shape as a typical structure. It is more difficult. Especially the radius of the blade root is small, it is extremely difficult to clean the root, and the chatter problem is serious when the tool is connected and processed. The rigidity of the milling cutter, the diameter of the blade and the milling angle will be extremely restricted by conventional milling, making five-axis milling almost impossible. can not achieve. Contents of the invention [0003] In view of this, the main purpose of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H1/00B23H9/00B23H9/10B23H11/00
CPCB23H1/00B23H9/00B23H9/10B23H11/00
Inventor 石红敏李长青宋晓庆彭明友张永刚时俊强冯咏郑小松
Owner 西安西航集团莱特航空制造技术有限公司
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