SU844193A1 - Apparatus for electroerosion cutting out by wire electrode - Google Patents

Description

one

The invention relates to an electroerosive treatment using an electrode-wire cutter, which is rewinding during processing, and may find application in electroerosive wire machines in the processing of complicated parts.

A device for wire processing, equipped with guide rollers mounted for free rotation on a bracket that interacts with swinging arms, which are hingedly connected to each other by a rigid link and form a hinged parallelogram with the wire electrode, is known. translational movement 1. In the event that this device is used for electro-erosion treatment, the absence of rewinding of the wire will lead to its rapid wear and burnout.

The aim of the invention is to increase the efficiency of the process by tending the wire during erosion treatment a reciprocating movement and a rewinding movement.

The goal is achieved by the fact that additional rollers are inserted into the device, two of which are mounted on the bracket in such a way that the branches of the electrodewires form an inflection. The axes of the branches pass through the swing axes of the arms of the hinge parallelogram, and two rollers are mounted on the free arms of the levers. FIG. 1 shows schematically a general view of an electroerosive treatment device with a vibrating wire electrode; in fig. 2 is a section A-A of FIG. one.

A device for electroerosive treatment with an oscillating electrode includes a bracket 1 with freely rotating rollers 2, levers 3 rotating around axis 4 and having freely rotating rollers 5 at the ends, as well as a rigid link 6. On the bracket 1 there is another pair of free rotating rollers 7 in the area of the axes of rotation of the levers 3. The upper lever 3 is connected to the vibrator 8 by means of an ilok spring 9. The electric wire 10 from the tension mechanism (not shown) passes along the guide roller 11, bends around the lower roller 7, flips through the rollers 5 and 2, it skirts the upper NII of the roller 7 and goes to the rewind mechanism to the receiving machine (not shown).

When the rewinding mechanism (drawing) of the electrode-wire and the vibrator is turned on, the following occurs. Vibrator 8

It transmits oscillatory movements by means of a flat spring 9 by levers 3, which oscillate synchronously, since they are connected by a rigid hinge link 6.

Together with the levers 3, the area of the electrode-wire oscillates thrown over the rollers 5 to the axis 4. The area of the wire after axis 4 does not oscillate. Oscillating movements of the electrode-wire between the rollers 5 will be maximum and do not interfere with the simultaneous pulling (rewinding) of the wire, since the wire sections from the axis 4 to the rewinding mechanism and to the tension mechanism do not oscillate. .

The maximum oscillations of the electrode-wire, which occur at the ends of the levers 3, attenuate completely at the point of inflection. The rollers 2 serve as guides for the electrode-wire during the EDM process and perform the functions of guiding the oscillating movement of the electrode-wire and the movement from rewinding.

Claims (1)

Invention Formula A device for electroerosive cutting with an electrode wire, equipped with guide rollers mounted with the possibility of free turning, on a bracket that interacts with swinging arms, which are articulated with a rigid link and form a hinged parallelogram with an electrode wire, and one of the arms A reciprocating drive acts, characterized in that the purpose of improving processing efficiency is to introduce additional rollers into the device, and two of them are set on the bracket in such a way that the branches of the electric wire form an inflection and the axes of the branches pass through the swing axes of the arms of the articulated parallelogram, and the other two rollers are mounted on the free arms of the levers. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 569437, cl. B 24V 21/02, 1976. J