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Electrolytic processing method for ribbed deep small holes and special tool cathode

A technology of tool cathode and processing method, applied in the direction of processing electrodes, electric processing equipment, electrode manufacturing, etc., can solve the problems of low processing efficiency and forming accuracy, easy detachment of photoresist, unstable processing process, etc.

Inactive Publication Date: 2007-04-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] The purpose of the present invention is to provide a ribbed deep hole electrolytic processing method and a special tool cathode to solve the current difficulty in making electrodes for bamboo hole processing, the photoresist is easy to fall off, the processing process is unstable, and the processing efficiency and forming accuracy are low. question

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  • Electrolytic processing method for ribbed deep small holes and special tool cathode
  • Electrolytic processing method for ribbed deep small holes and special tool cathode
  • Electrolytic processing method for ribbed deep small holes and special tool cathode

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Embodiment Construction

[0016] The following describes in detail how to process the ribbed cooling holes in the engine blade and the preparation of the tool cathode with reference to FIGS. 1 to 3 .

[0017] Step 1: Firstly, the light hole 1 is machined on the workpiece by electrolytic machining.

[0018] The second step: prepare the cathode 28 of the tool for processing bamboo joint holes as shown in FIG. 1 . Choose a metal tube 13 with good electrical conductivity as the basic material of the tool electrode, as shown in Figure 1(a), its cross-sectional shape is circular, and the metal material is corrosion-resistant. Adopt a reverse copy cathode 18, utilize the electrolytic machining reverse copy method to process the outer wall surface of the metal tube into a groove-shaped 16 structure as shown in Figure 2 (c), the depth of the groove 16 should be smaller than the difference between the outer diameter of the metal tube and the inner warp size, The width of the groove 16 can be processed according...

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Abstract

The present invention is electrolytic processing method for ribbed deep small hole and its special tool cathode, and belongs to the field of electrolytic machining technology. The method includes the following steps: electrolytic machining one metal pipe with one reversely copied cathode to form notches in the surface of the metal pipe; coating epoxy resin glue into the notches; installing positioning rack to the end of the tool electrode to make the forming tool electrode; machining smooth hole in the workpiece; stretching the forming tool electrode into the deep smooth hole to machine the ribbed deep small hole. The present invention has simple machining of the forming tool electrode, high ribbed hole machining precision, high machining stability and other advantages.

Description

technical field [0001] The ribbed deep hole electrolytic machining method and special tool cathode of the present invention belong to electrolytic machining [0002] technology field. Background technique [0003] With the continuous development of engine technology, the requirements for engine thrust-to-weight ratio and booster ratio are getting higher and higher, and an important way to increase the thrust-to-weight ratio is to increase the temperature in the combustion chamber, which requires the engine to work at a higher temperature. As a result, higher requirements are put forward for the design and manufacture of the combustion chamber, especially for the cooling of the turbine blades. Modern engines are required to operate normally at a high temperature of more than 1300 degrees, which far exceeds the temperature that the engine blade materials can withstand. In order to ensure the normal operation of the engine, it is particularly important to take effective measu...

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Application Information

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IPC IPC(8): B23H9/16B23H3/04B23H3/06
Inventor 朱荻王明环曲宁松
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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