CN2553941Y

CN2553941Y - Electrospark wire cutting machine of symmetric tensioning pole wire

Info

Publication number: CN2553941Y
Application number: CN 02263413
Authority: CN
Inventors: 王炎秋
Original assignee: Jiangsu Sanxing Machinery Manufacture Co ltd
Current assignee: Jiangsu Sanxing Machinery Manufacture Co ltd
Priority date: 2002-07-26
Filing date: 2002-07-26
Publication date: 2003-06-04
Anticipated expiration: 2012-07-26

Abstract

The utility model relates to an electric spark line cutting machine of a symmetrical tensioning wire. The utility model replaces a horizontal guideway in the prior art with a linear bearing in order to reduce the motion resistance of the movable plate, thus the movable plate can timely reflect and adjust the tension of the electrode wire; the installation of a positioning guide wheel improves the stability of the tension of the electrode wire when processing workpieces with different thickness; the interference of external environment is prevented by arranging a heavy hammer and a tensioning wire mechanism in a stanchion chamber. The tension of the electrode wire at the processing area of the utility model is more stable; therefore, the processing precision is high.

Description

The WEDM of symmetry tensioning silk

(1) technical field:

The utility model relates to a kind of WEDM of symmetrical tensioning silk.

(2) background technology:

WEDM is to pump cut workpiece by the wire electrode between the upper and lower capstan.The processing district electrode thread intension also keeps that tensile force is constant to have direct decision or influence for the fineness of machining accuracy, machining gap, processing work and the stability of machining accuracy etc.

Prior art is that the gravity by weight comes the tensioning wire electrode.Its technical solution has two kinds: one is by two weights difference tensioning two sections wire electrodes; Chinese patent 97249695.5 has proposed second kind of solution, and it draws a slide block that matches with horizontal guide rail by a weight, thus the two sections of tensioning simultaneously wire electrode.This technical solution has significant progress than the former, mainly shows: the pulling force sum that is subjected to when 1, this structure can keep the upper and lower reciprocal cutting movement of wire electrode is constant, thereby has guaranteed that wire electrode tension is stable between two capstans; 2, regulating wheel and each commutation guide wheel is in same perpendicular, thereby avoided wire electrode distortion between two capstans.Its weak point is: 1, the weight outside that is positioned at column has not only influenced attractive in appearance but also be vulnerable to external interference; 2, for the workpiece of processing different-thickness, upper block moves up, and the regulating wheel invariant position, certainly will cause the angle of wire electrode and the wire electrode of processing district between regulating wheel and capstan to change with the mobile of lifting column.This will bring negative effect to the tension stability of the wire electrode of processing district, and this is more obvious when the workpiece of the big thickness of processing; 3, horizontal guide rail frictional resistance is big, and reaction easily lags behind, and timely reflection and the stressing conditions of regulating the processing district wire electrode are played negative effect.Above weak point all has adverse effect for the tension stability of the wire electrode of processing district.

(3) summary of the invention:

The utility model aims to provide the WEDM of the more stable symmetrical tensioning silk of the tension force of a kind of processing district wire electrode.、

Technical solution of the present utility model is as follows:

A kind of WEDM of symmetrical tensioning silk comprises lathe bed, wire storage tube, wire electrode, two capstans, movable plate, fixed pulley, rope, weight etc. up and down.Wherein, lathe bed has the upper end and stretches out upper arm, by-level is stretched out the column of underarm, weight is fixed on the movable plate through fixed pulley by rope, and be the hang that suspends, wire electrode lays out up and down and forms the sealing silk through the upper and lower reverse wheel of underarm, the movable plate guide wheel, the capstan that are fixed on the movable plate in the two capstans outside from wire storage tube, above-mentioned commutation guide wheel, movable plate guide wheel, capstan all are positioned at same perpendicular, it is characterized in that: fix two linear bearings on the movable plate abreast, be fixedly connected on the column linear bearing axle horizontal.

Replace horizontal guide rail of the prior art with linear bearing in the above-mentioned technical scheme, reduced the resistance of motion of movable plate, make that the movable plate reaction is more sensitive, thereby in time reflect and regulated the tension force of processing district wire electrode, improved machining accuracy and stability.

Further technical scheme is:

On the described upper arm with last capstan be positioned at same level height and with underarm on the commutation guide wheel be positioned at same vertical line place and fixedly be equipped with necessarily to guide wheel, lay out up and down and through being fixed on the guide wheel on the movable plate and the wire electrode of above-mentioned commutation guide wheel from wire storage tube, walk around above-mentioned directional wheel and two capstans up and down respectively, form the sealing silk in the capstan outside.

This technical scheme can guarantee all that for the workpiece of processing different-thickness the wire electrode angle of two capstan both sides remains unchanged (vertically), and this tension force to the processing district wire electrode keeps stable and has a positive effect.

Another improvements are:

Have cavity in the described column, described weight, rope, fixed pulley, movable plate and the linear bearing that upward fixedly is equipped with thereof all are positioned at this cavity, have some holes on the described cavity to pass through wire electrode.This improvement project makes weight be suspended to column inside, and is not only attractive in appearance but also prevented extraneous interference.

(4) description of drawings:

Accompanying drawing is the schematic diagram of the utility model embodiment;

Each sequence number is respectively among the figure: the following commutation guide wheel of 1 lathe bed, 2 wire storage tubes, 3 wire electrodes, 4 columns, 5 movable plates, 6 linear bearings, 7 linear bearing axles, 8 ropes, 9 fixed pulleys, 10 weights, 11 cavitys, 12 holes, 13 movable plate guide wheels, 14 underarms, 15 underarms go up capstan on commutation guide wheel, 16 directional wheels, 17 upper arm, 18,19 times capstans, 20 underarms

(5) specific embodiment:

Referring to accompanying drawing, the utility model embodiment comprises lathe bed 1, wire storage tube 2, wire electrode 3, two

capstans

18,19, movable plate 5, fixed pulley 9, rope 8, weight 10 etc. up and down.Wherein, lathe bed 1 has the upper end and stretches out upper arm 17, by-level is stretched out the column 4 of underarm 20, these column 4 inside have the cavity 11 that has some holes 12, and the chamber is built-in with weight 10, rope 8, fixed pulley 9, movable plate 5,

commutation guide wheel

14,15 etc., wherein, described weight 10 utilizes rope 8 to be fixed on the movable plate 5 through fixed pulley 9, and suspend down and fall in the cavity 11, fix two linear bearings 6 on the described movable plate 5 abreast, linear bearing axle 7 flatly is fixedly connected on the column 4.Wire electrode 3 from wire storage tube 2 lay out successively the guide wheel of commutation up and down 14,15, directional wheel 16 up and down through movable plate guide wheel 13, underarm,

capstan

18,19 forms the sealing silk in two capstans, 18,19 outsides up and down, above-mentioned

commutation guide wheel

14,15, directional wheel 16,

capstan

18,19 all are positioned at same perpendicular, described directional wheel 16 is fixed on the upper arm 17, and it and last capstan 18 are positioned at same level height and are positioned on the same vertical line with the commutation guide wheel 15 of going up of underarm.

Claims

1, a kind of WEDM of symmetrical tensioning silk, comprise lathe bed, wire storage tube, wire electrode, two capstans up and down, movable plate, fixed pulley, rope, weight etc., wherein, lathe bed has the upper end and stretches out upper arm, by-level is stretched out the column of underarm, weight is fixed on the movable plate through fixed pulley by rope, and be the sagging position that suspends, wire electrode lays out up and down and through some commutation guide wheels from wire storage tube, be fixed on the guide wheel on the movable plate, capstan forms the sealing silk in the two capstans outside, above-mentioned commutation guide wheel, capstan is positioned at same perpendicular, it is characterized in that: fix two linear bearings on the movable plate abreast, be fixedly connected on the column linear bearing axle horizontal.

2, the WEDM of symmetrical tensioning silk according to claim 1, it is characterized in that: on the described upper arm with last capstan be positioned at same level height and with underarm on the commutation guide wheel be positioned at same vertical line place and fixedly be equipped with necessarily to guide wheel, lay out up and down and through being fixed on the guide wheel on the movable plate and the wire electrode of above-mentioned commutation guide wheel from wire storage tube, walk around above-mentioned directional wheel and two capstans up and down respectively, form the sealing silk in the capstan outside.

3, the WEDM of symmetrical tensioning silk according to claim 1, it is characterized in that: described column inside has cavity, described weight, rope, fixed pulley, movable plate and the linear bearing that upward fixedly is equipped with thereof all are positioned at this cavity, also have some holes on this cavity.

4, according to the WEDM of claim 1,2,3 arbitrary described symmetrical tensioning silks, it is characterized in that: described wire electrode from wire storage tube lay out successively the guide wheel of commutation up and down, directional wheel up and down through movable plate commutation guide wheel, underarm, capstan forms the sealing silk in the two capstans outside up and down.