SU1311878A2 - Apparatus for electro-erosion working - Google Patents

Abstract

The invention relates to electrophysical and electrochemical processing methods, in particular, cut-off electroerosive. machine tools, with devices refueling wire electro-1 da-tool. The purpose of the invention is to increase the reliability of capture and reduction. The invention relates to the field of electroerosive processing and can be used in machine-tool, instrument-making and tool industry, especially when creating automated electro-zing machines. . The purpose of the invention is to increase the reliability of the grip and reduce the consumption of the wire electrode tool. Fig. 1 shows the structure of the device proposed; 2 to 8 show the phases of operation of the device when the end of the wire electrode tool is pulled out; Fig. 9 shows the fastening of the drawn end of the wire of the pole tool of the type tool onto the receiving coil with a fastening device. The consumption of wire electrode-tool. The device contains a mechanism for rewinding the electrode-tool 1, consisting of receiving 7 and feeding 6 coils, guide rollers 5 forming the feed, working and receiving paths, upper 2 and lower 3 guides on both sides of the machining zone refueling the wire electrode-tool with the grip 10 and the catcher 13, as well as with the node 12 pieces of wire. Moreover, the gripper and the safety device are installed with the possibility of reciprocating movement, respectively, in the horizontal and vertical planes, and the gripper and the assembly of segments are located under the lower guide. 9 il. with S (L) The device consists of a wire electrode tool 1, located between the top 2 and bottom 3 guides, fixed on the clip 4, the guides of the pull rollers 5, the feed 6 and the receiving 7 coils, the working table 8, on which is set by the workpiece 9. Under the lower guide 3 there is a gripper 10 fixed at the end of the rod of a fixed pneumatic cylinder 11 for moving it in a horizontal direction, and a fixedly fixed unit 12 for cutting the wire electrode tool 1. 4, catcher 13 is installed, consisting of a tube 14, inside 00 00 oo

Description

which accommodates a movable retainer 15, made in the form of a rod with a conical tip and mounted on the rod of the pneumatic cylinder 16 of the actuator moving the brace 15. The safety device 13 with the pneumatic cylinder 16 is fixed on the rod of the telescopic pneumatic cylinder 17 of the actuator moving the catcher 13 in the vertical direction, and the pneumatic cylinder 17 mounted on the end of the rod fixedly mounted telescopic pneumatic cylinder 18 of the actuator moving the catcher 13 in the horizontal direction. The receiving coil 7 is provided with a fastener 19 on it of the end of the wire electrode tool 1.

The device works as follows.

After processing the technological contour of the next billet or when the wire electrode-tool 1 breaks during processing (FIG. 2), the gripper 10, clamping the wire electrode-tool 1, and the assembly

12 Cuts off its lighty end. The horizontal movement drives of the catcher 13 and the gripper 10 move them to the position of charging the wire electrode tool 1 (FIG. 3). The desktop 8 with the workpiece 9 at the same time move so that the OS of the technological opening of the workpiece 9 coincides with the axis of the catcher 13

(Fig, 4).

Cylinder 17 moves the safety device

13 in the lowest position (figure 5) In this case, the tension between the supply coil 6 and the gripper 10 section of the wire electrode-tool 1 falls into the gap between the ends of the tube

14 and a tapered tip retainer 15.

The pneumatic cylinder 16 (FIG. 6) moves the retainer 15 to the upper position, and the wire electrode tool 1 is clamped between the ends of the tube 14 and the cone tip of the retainer 15. Then the grip I) releases the wire electrode J and the cylinder 1 rotates the grip 10 to its original position -. the

The telescopic pneumatic cylinder 17 moves the safety device 13 to the extreme upper position (FIG. 7), and the telescopic P1 is the evmatic

0 5

0

five

g

five

the cylinder 18 moves it to its original position (Fig. 8). In this case, the work table 8 with the workpiece 9 also moves to the working position, and the wire electrode-tool 1 is located on the guides 2, 3 and the rollers 5.

The fixing unit 19 fixes the wire electrode-tool 1 on the receiving coil 7 (FIG. 9), and the cylinder 16 moves the lock 15 to the lowest position. This releases the end of the wire electrode tool 1, which is wound onto the receiving coil 7.

The gripper 10 is made in the form of movable jaws (not shown in the drawing), the clamping wire electrode-tool 1,

The assembly 12 of cutting the wire electrode-tool 1 with a diameter of less than 0.1 mm is advisable to perform as a contact sliding on the wire electrode-tool 1 (not shown), to which a pulse from the current generator is applied, burning.

And for a wire electrode with a diameter of more than O, 1 mm of soft metals, for example, brass, it is advisable to use mechanical knives,

The node 19 of the fastening of the wire electrode-tool 1 on the receiving coil 7 is made in the form of a movable cheek (not shown), clamping the wire electrode-tool 1 between the ends of the movable cheek and the base of the receiving coil 7.

Electromechanical and hydraulic actuators or a combination of various types of actuators can also be used to move the catcher 13, the gripper 10 and the clamp 15.

The reliability of the automatic charging of the wire electrode does not depend on its diameter and the materials allows wide use of the proposed device for electroerosive processing of the blanks of the main and tool production.

Claims (1)

Invention Formula A device for electroerosive processing with a wire electrode tool, comprising an electrode rewinding mechanism in the form of receiving and feeding coils, guide rollers forming the feed, working and receiving paths, the upper and lower guides located on both sides of the treatment area, and the wire filling mechanism Electrode-tool with a gripper and a catcher installed with the possibility of reciprocating movement , 11878 6 respectively in horizontal and vertical planes, and a wire cut-off assembly, characterized in that, in order to increase the gripping reliability and reduce the consumption of the wire electrode-tool, the gripper and the cut-off assembly are located under the lower guide. ten //////// 1 / Y7 Fig.Z 15 FIG, Y FIG. 7 311878