Device for performing pulse electrochemical precise broaching on long and thin inner hole

Abstract

The invention belongs to the field of non-traditional machining and relates to a device for performing pulse electrochemical precise broaching on a long and thin inner hole. According to the structure of the device, electrode bearing frames are symmetrically fixed to the two ends of a fixed workbench; linear guide rails are symmetrically installed on the fixed workbench and located between the two electrode bearing frames; a movable workbench is installed on the linear guide rails; a linear motor is installed between the fixed workbench and the movable workbench and located between the two linear guide rails; bearing plates are evenly distributed on and fixed to the movable workbench side by side; two bearing wheels are horizontally installed on the side face of each bearing plate; pressing plates are installed on the bearing plates; a rubber wheel is installed on the side face of one pressing plate; bearing wheels are installed on the side faces of the rest of the pressing plates; the rubber wheel is connected with a stepping motor; and two dynamic sealing devices are installed on vertical plates of the electrode bearing frames in a right opposite manner. An electrode penetrates the inner hole of a workpiece, strides over the two electrode bearing frames and is tensioned through threads. The device for performing pulse electrochemical precise broaching on the long and thin inner hole is simple and compact in structure, and the requirement for economically, stably and precisely machining a long and thin shaft part can be met.

Description

technical field [0001] The invention belongs to the field of special processing, and relates to a device for performing pulse electrochemical precise hole reaming on an elongated inner hole. Background technique [0002] Elongated holes are widely used in aerospace and other fields. At present, machining methods such as deep hole drilling are mainly used to process slender holes, but slender holes of difficult-to-machine materials such as stainless steel and titanium alloys are difficult to achieve by machining, especially for stepped holes. Conventional machining methods have problems such as easy skewing of the machining axis, poor rigidity of the tool holder, poor heat dissipation of the tool, easy wear, and difficulty in chip removal when machining slender holes. The electrochemical machining method does not generate mechanical force, the machining tool is not easy to deform and wear, and can process hard and brittle materials with high machining accuracy and good surfa...

AI Technical Summary

Problems solved by technology

However, there is currently a lack of a simple, economical and precise electrochemical machining method to realize the machining of special position holes such as reaming in the middle of elongated holes.

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