Dynamic auxiliary electrolyte feeding clamp and electrolyte feeding way for electrolytic machining of vane cascade channel of blisk

Abstract

The invention relates to a dynamic auxiliary electrolyte feeding clamp and an electrolyte feeding way for electrolytic machining of a vane cascade channel of a blisk, which belong to the field of electrolytic machining. A clamp body comprises a main electrolyte inlet (8) and an auxiliary electrolyte inlet (9), wherein a first path of electrolyte flows from the main electrolyte inlet (8) to a first side face (18) of a tool cathode, and then enters from the side face to a machining clearance on a front end face (20) of the tool cathode; a second path of electrolyte enters from the auxiliary electrolyte inlet (9) to a supplementary electrolyte elongated slot (12) on following supplementary electrolyte, enters from the supplementary electrolyte elongated slot (12) to an outlet of the following supplementary electrolyte, and then enters the machining clearance on the front end face (20) of the tool cathode; the two paths of electrolytes are intersected at the machining clearance on the front end face (20) of the tool cathode; the electrolytes after intersection flow to a second side face (16) of the tool cathode, and then pass by a root portion (17) of the tool cathode, and flow out of an electrolyte outlet (13) of a clamp base. According to the dynamic auxiliary electrolyte feeding clamp and the electrolyte feeding way disclosed by the invention, a flow field of the machined electrolytes is improved, and a machining stability is enhanced.

Description

technical field [0001] The invention relates to a dynamic auxiliary liquid supply fixture and a liquid supply mode for the electrolytic machining of the cascade channel of an integral blisk, belonging to the technical field of electrolytic machining. [0002] Background technique [0003] Electrolytic machining is based on the principle of electrochemical anodic dissolution, using a pre-formed tool cathode to dissolve the metal workpiece as an anode in the electrolyte according to the shape and size of the tool cathode to achieve material removal and workpiece forming. Compared with other mechanical processing methods, electrolytic machining has the advantages of wide processing range, high processing efficiency, good surface quality, no loss of tools, and no mechanical cutting force. It has been widely used in aerospace, weapons, automobiles, molds and other industries. Applications. [0004] The blisk is an integral structural part with complex structure, twisted surface...

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Problems solved by technology

[0006] Radial feed electrolytic machining has the above advantages at the same time, due to the use of side flow electrolyte flow channel ( Image 6 ), there are also the following disadvantages: 1. Due to the use of a cylindrical cathode rod, the bonding surface can only be in the middle of the cylinder, that is, the bisecting plane of the blade part of the workpiece blank, and the electrolyte is easy to flow from the bonding surface during processing. surface leakage, forming stray corrosion areas of the workpiece, which will affect the geometric accuracy and surface quality of the molding; After the electrolytic processing product, it flows to the other side of the cathode of the tool. Due to the drastic change of the flow channel in the part of the processing gap, the electrolyte will lack liquid, resulting in a short circuit of the cathode or the workpiece, which affects the stability of the processing.

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