CN2274999Y

CN2274999Y - Top and bottom tensioning mechanism for electric spark wire electrode cutting machine tool

Info

Publication number: CN2274999Y
Application number: CN 96241926
Authority: CN
Inventors: 高影利
Original assignee: BEIJING AQI INDUSTRY ELECTRONIC Co Ltd
Current assignee: Beijing Agie Charmilles Industrial Electronics Ltd.
Priority date: 1996-11-08
Filing date: 1996-11-08
Publication date: 1998-02-25
Anticipated expiration: 2006-11-08

Abstract

The utility model relates to a tensioning mechanism of a wire electrode, particularly a high speed wire travel tensioning mechanism of an electric spark cutting machine tool. An upper tension wheel is arranged between two adjacent guide wheels on the upper side of a wire winding drum, and a tension wheel is arranged below the wire electrode positioned on the lower side of the wire winding drum. The tension difference of wire electrode positioned on a cutting area during the reciprocating run towards the upper side and the lower side can be reduced. The roughness and the precision of the surface size of spark cutting can be improved.

Description

The strainer up and down of electric spark linear cutting machine

The utility model relates to a kind of strainer of wire electrode, especially refers to the high speed travelling wire electrode thread intension mechanism of electric spark linear cutting machine.

At present, the high speed travelling wire wire electrode of electric spark machine tool is to adopt a regulating wheel mostly on the market, long electrode silk for high speed travelling wire, its tensioning degree changes greatly when reciprocating, spark discharge effect between wire electrode and the workpiece be must have influence on, thereby the surface size precision and the roughness of required electric spark cut workpiece are difficult to reach.

In view of this, the purpose of this utility model provides a kind of strainer up and down of electric spark linear cutting machine, regulating wheel all is set on the wire electrode that the wire storage tube upper and lower stretches out, and the afterburning size that can regulate regulating wheel, tension variation is reduced when making sealing ring type wire electrode reciprocating, to guarantee that spark discharge is even between wire electrode and the workpiece.

The purpose of this utility model is achieved in that a kind of strainer up and down of electric spark linear cutting machine, comprise a wire storage tube 1, a plurality of guide wheel 2, wire electrode 3, go up capstan 5 and capstan 6 down, it is characterized in that: above wire storage tube 1, be provided with regulating wheel 7 above the wire electrode 3 of 2 on adjacent two guide wheels, be provided with regulating wheel 8 down again below the wire electrode below wire storage tube 3.

Above-mentioned upward regulating wheel 7 is to be articulated in a fork 9 lower ends; Above-mentioned down regulating wheel 8 is to be articulated in a fork 9 lower ends, and this fork lower end connects cotton rope 11 1 ends again, and these cotton rope 11 other ends are walked around a fixed pulley 12 suspentions one weight 13; Pedestal 71 weight of regulating wheel 7 can be regulated above-mentioned weight 13 lower ends and are provided with dismountable polylith balancing weight 131 on above-mentioned fork 9 lower ends.

Owing to adopt such scheme: the surface size precision and the roughness that have improved the electric spark cutting.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 the utility model exemplary embodiments schematic diagram.

Regulating wheel and swing rod structure schematic diagram on Fig. 2 the utility model exemplary embodiments.

Regulating wheel and swing rod structure schematic diagram under Fig. 3 the utility model exemplary embodiments.

Fig. 4 the utility model exemplary embodiments weight structural representation.

Among the figure: regulating wheel on capstan on 1 wire storage tube, 2 guide wheels, 3 wire electrodes, 4 workpiece, 5, the 6 times capstans, 7,8 times regulating wheels, 9 forks, 10 pivots, 11 cotton ropes, 12 fixed pulleys, 13 weights, 131 balancing weights.

Present embodiment comprises a wire storage tube 1, a plurality of guide wheel 2, wire electrode 3, upper and

lower capstan

5,6, upper and lower regulating

wheel

7,8, as shown in Figure 1, wherein:

Wire storage tube 1 is to be supported on the lathe, by the motor (not shown) drive, rotating cylinder that can positive and negative rotation, be wound with wire electrode 3 (storing a certain amount of wire electrode 3) on it and belong to prior art.

Guide wheel 2 is the fixed pulleys that are supported on the lathe, is enclosed within respectively on the enclosed wire electrode 3 with its outer rim, changes the direction of wire electrode 3, and wire electrode 3 is moved back and forth at certain circuit (track), belongs to prior art.

Wire electrode 3 is that solderless wrapped connection is at wire storage tube 1 and be supported in several guide wheel that leaves 2 outer rims, the reciprocating sealing ring type conductive filament with the positive and negative rotation of wire storage tube 1; Part between last capstan 5 and following capstan 6 is passed workpiece to be processed 4, carries out spark discharge (workpiece 4 moves on request) and belong to prior art on the workbench of lathe.

Upper and

lower capstan

5,6 also belongs to a kind of fixed pulley, be supported in respectively on the upper and lower lathe in workpiece to be processed 4 positions, be used for specially, and assurance wire electrode 3 is done upper and lower straight reciprocating motion at cutting area supporting electrode silk 3, to improve the precision of electric spark cutting, belong to prior art.

Last regulating wheel 7 is to be supported on the lathe, to press 2 wire electrode 3 positions of first, second adjacent guide wheel, wire storage tube 1 top, changes the tensioning degree of wire electrode 3; Should go up the lower end that regulating wheel 7 usefulness bearing seats 71 are articulated in fork 9, and the upper end of fork 9 is suspended on the pivot 10 on the lathe with articulating, reach the deadweight of going up regulating wheel 7 with fork 9 and be pressed against wire electrode 3 tops, make its tensioning, and can increase or reduce pedestal 71 (metal) weight of fork 9 lower ends, as shown in Figure 1, 2.

Following regulating wheel 8 also is to be supported on the lathe, be pressed on wire electrode 3 belows (also being that wire electrode 3 tensionings are than slack strand) of 2 on guide wheel that wire storage tube 1 below is adjacent, make this segment electrode silk 3 tensionings, this time regulating wheel 8 usefulness bearing seats 81 (nonmetal) are articulated in the lower end of fork 9, and the upper end of this fork 9 is suspended at the pivot 10 of lathe with articulating, again with the lower end of the fixedly connected fork 9 of an end of cotton rope 11, and the other end of cotton rope 11 is walked around a fixed pulley 12 and suspend a weight 13 (lower end of weight 13 is provided with dismountable polylith balancing weight 131) in midair, with the weight of adjusting weight 13 (change balancing weight 131 what), change upwards tensile force of following 8 pairs of wire electrodes of regulating wheel 3, as Fig. 1,3, shown in 4, thereby, cutting area (is promptly gone up, following capstan 5, between 6) wire electrode 3 last, the tension degree variation reduces when back and forth moving down, discharge effect is improved, improve the surface roughness and the dimensional accuracy that are cut workpiece.

In addition, upper and lower regulating

wheel

7,8 can also adopt other spring, electromagnetic type boosting mechanism, adjusts the tensile force size of wire electrode 3.

Claims

1, a kind of strainer up and down of electric spark linear cutting machine, comprise a wire storage tube (1), a plurality of guide wheel (2), a wire electrode (3), last capstan (5) and following capstan (6), it is characterized in that: be provided with regulating wheel (7) above the wire electrode (3) between adjacent two guide wheels (2) in wire storage tube (1) top, be provided with regulating wheel (8) down again below the wire electrode below wire storage tube (3).

2, according to the strainer up and down of the described electric spark linear cutting machine of claim 1, it is characterized in that: above-mentioned upward regulating wheel (7) is to be articulated in a fork (9) lower end.

3, according to the strainer up and down of the described electric spark linear cutting machine of claim 1, it is characterized in that: above-mentioned regulating wheel (8) down is to be articulated in a fork (9) lower end, and this fork lower end connects cotton rope (11) one ends again, and this cotton rope (11) other end is walked around a fixed pulley (12) suspention one weight (13).

4, according to the strainer up and down of the described electric spark linear cutting machine of claim 1, it is characterized in that: pedestal (71) weight of regulating wheel (7) can be regulated on above-mentioned fork (9) lower end.

5, according to the strainer up and down of the described electric spark linear cutting machine of claim 1, it is characterized in that: above-mentioned weight (13) lower end is provided with dismountable polylith balancing weight (131).