A kind of electric discharge machining device and machining method of three-degree-of-freedom ball gear

Abstract

An electric spark machining device and a machining method for a three-degree-of-freedom ball gear belong to the technical field of machining. Among them, a three-degree-of-freedom ball gear EDM device includes a plurality of profiling electrode rods 1, a plurality of profiling electrode rods 2, a plurality of profiling electrode tool heads 1, a plurality of profiling electrode tool heads 2, A plurality of guide grooves one, a plurality of guide grooves two, a rotating shaft and a feeding disc. The side surfaces of the profiling electrode tool head used in the processing method and device disclosed in the present invention are the conjugate curved surfaces of the workpiece to be processed, and are suitable for all tooth-shaped gears. The machining method is EDM, which realizes the finishing of the workpiece to be machined at one time by controlling the feed amount of the profiling electrode tool head. It is a one-time machining, which is conducive to improving the pulse utilization rate and efficient machining. The processing method and device utilize the principle of electrothermal fusion to produce rapidly, the processing path of the profiling electrode tool head is simple, the efficiency is high, and it can be used for batch processing.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to an electric discharge machining device and a machining method for a three-degree-of-freedom ball gear. Background technique [0002] See the master's thesis "Structural Design and Analysis of Ball Gear CNC Gear Grinding Machine" published by Pan Cunyun et al. of National University of Defense Technology. The two-degree-of-freedom ball gear mechanism described in this paper uses a designed CNC gear grinding machine for precision grinding, but for Tooth surfaces with a precision of grade 6 or above need to be processed with special grinding tools designed to match the tooth shape. Even the local tooth surfaces of the three-degree-of-freedom ball gear cannot be finished at all, and the precision is greatly affected by the processing method and equipment. SUMMARY OF THE INVENTION [0003] In order to solve the problem that it is difficult to finish the loc...

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Problems solved by technology

[0003] In order to solve the problem in the prior art that it is difficult to finish the local tooth surface when processing complex tooth surfaces of three-degree-of-freedom spherical gears, the present invention proposes an electric discharge machining device and a processing method for three-degree-of-freedom spherical gears. The method is suitable for gears of all tooth shapes, economical, efficient and suitable for batch processing

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