Electric spark forming and on-line detection device for turbine disk

Abstract

The invention relates to the technical field of non-traditional machining and discloses an electric spark forming and on-line detection device for a turbine disk. The device comprises an adapter plate, a measurement rod, a tool electrode shaft and a plurality of discharge electrodes, wherein one end of the tool electrode shaft is connected with the center of the adapter plate; the other end of the tool electrode shaft is connected with a spindle head of a machine tool; the measurement rod and the discharge electrodes are arranged at the outer edge of the adapter plate respectively; and distances from the discharge electrodes to the adapter plate are equal. The device is simple in structure, high in machining efficiency and precision and low in cost; the spindle head of the machine tool drives the tool electrode shaft to drive the adapter plate to rotate, so that the frequency of replacing the discharge electrodes after shutdown is reduced greatly; the measurement rod and the discharge electrodes are arranged on the same adapter plate, on-line replacement of the measurement rod is achieved, and the error measurement by dismounting the electrodes and then mounting the measurement rod is not required.

Description

technical field [0001] The invention relates to the technical field of special machining, in particular to an electric discharge machining and online detection device suitable for profiling machining of curved surfaces such as turbine discs. Background technique [0002] At present, the turbine disk is the core component of aviation and aerospace engines. Processing is difficult to achieve higher precision processing. EDM uses pulsed spark discharge between tools and workpieces to remove excess material. It has the advantages of high precision and wide material adaptability, and is the mainstream processing method for turbine disks. In the existing EDM technology of turbine disk, the spindle head drives the electrode for processing, and only one electrode can be clamped at a time for processing. [0003] Since EDM of turbine disk belongs to profiling machining, the process of machining is accompanied by electrode loss, and a dozen or even hundreds of electrodes are often c...

AI Technical Summary

Problems solved by technology

[0003] Since the turbine disk EDM is a profiling process, the machining process is accompanied by electrode loss, and a dozen or even hundreds of electrodes are often consumed to complete a turbine disk.

Obviously, this method needs to clamp the electrode multiple times, which will inevitably lead to an increase in the number of shutdowns to clamp the electrode, which not only reduces production efficiency, but also the positioning error when clamping the electrode each time will lead to an increase in the error of the entire machining process and make the processed parts The accuracy of

Images