SU979065A1 - Device to electric discharge machine for rewinding wire tool-electrode - Google Patents

Description

one

This invention relates to electrophysical and electrochemical processing methods.

A device to an electroerosive machine for rewinding a wire electrode tool from a supply drum through an intermediate feed roller fixed to a shaft of a brake motor with a working surface accommodating several turns of a wire electrode tool to a receiving drum 1 J is known.

The known device does not allow a constant tension of the wire electrode tool to be achieved and its radial oscillations to be eliminated, as a result of which the surface roughness increases.

The aim of the invention is to reduce the roughness of the treated surface by stabilizing the tension of the wire electrode tool.

The goal is achieved by the fact that an additional intermediate receiving roller is inserted into the device with a working surface accommodating several turns of the wire electrode tool, the roller is fixed on the shaft of the electric motor inserted into the device and is installed between the intermediate feed roller and the receiving drum.

FIG. 1 Shown in principle 10 on the device diagram; in fig. 2 - the location of the elements of the device on the bracket of the machine.

On bracket 1 with bracket 2, install 5 flax feed drum 3, supplied from the factory with a wire electrode tool k. The wire electrode tool k from the feed drum 3 is fed to the

20 daily feed roller 5. which provides tension on the wire electrode tool. On the working surface of the roller 5, there are four turns of the wire electrode-instrumental surface and mounted on the shaft of the brake motor 6. From the intermediate feed roller 5, the wire electrode-tool 4 passes through the guide and compensation roller 7, the current lead 8, the guide pins 9, the workpiece 10, a current lead 11, a guide roller 12, a wire break sensor 13 and is fed to an intermediate receiving roller T ,, which rewinds the wire electrode of tool A. th surface prSmezhutochnogo receiving roller 1 namota- is but four coil wire electro da tool. The roller 1 is mounted on the shaft of an electric motor 15 equipped with a worm gearbox. From the intermediate pickup roller, the developed 20 wire electrode tool C is fed to the receiving drum 16 driven by the drive 17. In the proposed device, the electric motors 6 and 15 have a wide range of speed control, and the electric motor 6, in addition, can work for a long time in the brake mode. On J, -o6pa3Hbie, the working surfaces of the ib of the rollers 5 and T are wound around four turns of the wire electrode tool along its movement. This ensures a constant tension and a constant feed rate of the wire electrode 35 of the tool into the treatment area, since the number of rewind turns of the wire electrode tool on the rollers 5 and H remains unchanged during the rewinding process. In addition, rollers with an образ-shaped working surface exclude the creation of radial oscillations of the electrode-tool, since the turns of the wire electrode-tool do not wind over each other (-45 hectares) and the winding process on the rollers 5 and T occurs very smoothly. The feed drum 3 is installed perpendicular to the axis of the drive shaft of the roller .5 at a distance equal to the triple jg length of the drum 3- The axis of the unwound wire electric tool passes through the center of the drum 3 with roller 5 provides a smooth flow of the wire electrode tool regardless of the position winding coils on the drum 3.

The proposed device works as follows.

Include all electric motors of the device. With the help of the driven motor 15, the rewind speed is set, and with the help of the brake motor 6, the tension of the wire electrode-tool 4 is set. The wire electrode-tool C is driven by the intermediate receiving roller Tt. The constant rewinding speed and constant tension of the wire electrode tool in the proposed device is ensured by the constant number of rewind turns (coil) on the rollers 5 and 1A. Thus, the use of the proposed device allows to reduce the roughness of the treated surface. The invention The device to an electroerosive machine for rewinding a wire electrode tool from a supply drum through an intermediate feed roller fixed to a shaft of a brake motor on a receiving drum, which is different from the fact that, in order to reduce the roughness of the surface being processed by stabilizing the tension of the wire electrode tool , an additional intermediate roller is inserted into the device with a working surface containing several turns of the wire electrotool, the roller is locked captured on the shaft of the electric motor introduced into the device and mounted between the intermediate feed drum and the pickup roller. Information sources. taken into account during the examination 1. USSR Copyright Certificate No. 09820, cl. B 23 P 1/08, 197A (prototype).

FIG. 2

Claims (1)

Claim A device for an EDM machine for rewinding a wire electrode-tool from a feeding drum through an intermediate feeding roller fixed to a brake motor shaft to a receiving drum, characterized in that, in order to reduce the roughness of the surface being treated by stabilizing the tension of the wire electrode-tool, an additional intermediate a roller with a working surface containing several turns of a wire electrode tool, the roller is mounted on a shaft inserted into an electric motor device and is installed between the intermediate feed drum and the pickup roller.