JPH0276630A - Wire discharge processing device - Google Patents

Abstract

PURPOSE:To prevent a used wire electrode from wrapping on a wire carryout means by providing a wire takeup means on the wire electrode sendoff side of the wire carryout means. CONSTITUTION:A wire takeup means 40 holds automatically the tip of a used wire electrode 10 sent out of a wire carryout means 28 and takes up immediately. A sliding means is separated when the wire electrode 10 is removed, and the taken-up wire electrode 10 is removed out externally.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire electrical discharge machining apparatus, and more particularly to a mechanism for recovering a wire electrode after being subjected to machining.

[Conventional technology]

FIG. 7 is a schematic diagram showing, for example, a conventional wire electrical discharge machining device, and in the figure, QO is 111 poles of wire, (2)
is a wire bobbin formed by winding a wire electrode αO, α4 is connected to a wire bobbin ①, is wound on the wire bobbin @, and sends out the wire ljtMQl to its feeding path while giving 1 ton of thenic acid to the wire electrode αG. Attachment means, (16a7.
is a tension generating means that applies tension to the wire electrode αG,
(E) is an upper wire equipped with a guide means for slidably supporting the wire electrode QO, a means for supplying machining current to the wire electrode αQ, and a nozzle for spouting machining liquid to the machining part, although not shown in the figure. removal means, anl, t column,
(A) supports the t part Wise guide means and 2
Tile installed in column Q11 so as to be able to slide freely in the axial direction; I don't, but Wise City Kashi αQy! - A lower wire guide means provided at the bottom of the workpiece, comprising a guide means for slidably supporting, a power supply means for supplying processing power to the wire electrode αO, and a nozzle for spouting processing liquid to the processing part. , the rod supports the lower wire guide means, and one end thereof is fixed to the column (2), and the lower arm is connected to a pair of first idlers provided at the lower part Cζ of the lower wire guide means. 1-li (82a).

A pair of second idler pulleys (ta2b, +) and a second idler pulley (82 h Used wire electrode α
This is a wire collection box that collects and stores a.

Next, the operation will be explained. The wire electrode αQ unwound from the wire bobbin (2) is connected to the first pulley (16a)
(To) 1st tension generation mechanism 2nd pulley (16hJ - 8th pulley (160) → Upper wire guide means → Workpiece (to) - Lower wire removal means (C) - Wire unloading means (H) )
It will be strung along the route of Next, the second idler boot +
3 (82bJ rotates, its rotational force is transmitted to the conveyor belt (to), and the first idler pulley (82aJ) and occasionally the wire electrode αQ is continuously fed while being sandwiched between the conveyor belts. At the same time, a machining current is supplied from a not-shown machining power source to the wire 1!!pole αQ through the power feeding means of the upper and lower wire guide means to create a gap between it and the workpiece @. Generate electrical discharge. Then the workpiece @
is mounted and fixed, and the y:X-Y cross table is arbitrarily moved in the X and Y axis directions to cut the workpiece into a desired shape.

In this manner, the wire electrode αO, which has been used to process the workpiece and has been consumed, is sent to the wire recovery box (to) by the wire carrying means (support) and recovered.

[Problem to be solved by the invention]

Since the conventional wire electrical discharge machining apparatus is configured as described above, when machining is performed using the ultra-fine wire electrode αG in 6, the wire electrode αG is wrapped around the wire delivery means (7). Therefore, there are problems such as constant monitoring is required, and in the event that wrapping occurs, it takes time to take recovery measures.

This invention was made to solve the above-mentioned problems, and it is an object of the present invention to provide a wire electrical discharge machining apparatus in which the wire electrode does not wrap around the wire carrying means.

[Means to solve the problem]

A wire electrical discharge machining apparatus according to the present invention includes a wire carrying means provided in a wire electrode feeding path for carrying out the wire electrode used for top machining out of the feeding path. A winding means consisting of a winding section for winding the electrode and a wire electrode removing section for removing the wound wire electrode to the outside, a driving means for rotationally driving the winding means, and a winding means identical to the winding means. It has a rotating shaft and freely rotates, and is provided so as to be able to reciprocate in opposition to the wire electrode removal section of the winding means, and in the past fits into the winding means and closes the wire W pole removal section. A sliding means is provided on opposing sides of the winding means and the sliding means, respectively, and when the sliding means completes movement toward the winding means, the wire w! is fed out from the wire transporting means. L
holding means for pinching and holding the tip of the wire, and the winding means 6ζ, and as the sliding means moves away from the winding means, the wire collection box wound on the winding part is A wire winding means comprising a wire removing means for sending out the wire in the direction of the removal section is provided on the wire electrode sending side of the wire transporting means.

[Effect]

In this invention, the wire winding means automatically holds the tip of the used wire electrode sent out from the wire carrying means and immediately winds it up, and the sliding means separates the wire when removing the pole. Then, the wound wire electrode is automatically removed to the outside.

[Embodiments of the invention]

Hereinafter, one embodiment tS of the present invention will be described. Note that in each of the following figures, the same reference numerals as in FIG. 7 showing the conventional example indicate the same parts, so a description thereof will be omitted. In FIG. 1, (g) is a wire winding means provided on the wire feeding side of the wire feeding means (to). FIG. 2 is a diagram showing details of the wire winding means, in which (6) is the column (to).
The housing is fixed to the housing (6), the motor corresponding to the driving means is attached to the housing (6), (g) is the first flange, - is the first flange (1) connected to the rotating shaft, (2) is a bearing that is provided between the housing (6) and the rotating shaft and rotatably supports the rotating shaft @a, and 蜀 is the rotating shaft (
Force to connect the motor (goods) to the motor (goods) shaft...Bling,
The figure shows a winding shaft (56a) on which a plurality of fixing devices are fixed at uniform intervals in a concentric circle at a plane tζ on the first flange. A plate that can be freely moved in the direction (56bJ is a plate (56&
It is provided on the circumference of J to connect the political religion (56a) and the first flange, and the plate (56a) is attached to the first flange.
56a First compression spring that applies repulsive force, t56
d) is a winding means consisting of a first flange - 1 rotation shaft (g), a first bearing ring, a curve ring - 1 plurality of first winding shafts, the ring is a plate (56) and a compression spring (
56h), ... is a second flange, - is a second bearing for supporting the rotation of the second flange, - is coupled to the second bearing This first piston group is arranged on the concentric circumference of the surface of the second flange, which is slightly smaller than the concentric circle of the first winding shaft (b) provided on the first flange. A plurality of them are provided at equal intervals so as to alternately engage with the winding shaft (goods) 1, and their tips are connected to the concave < F of the plate t5sa).
160) A second winding shaft that fits into the first flange; (■ is the first flange); the second flange is provided at approximately the center of the plane facing the first cylinder, (14i:i); ＠2)→Almost at the center of the first flange (2), the second cylinder is provided opposite the first flange (2), and qI is slidably provided on the first cylinder (2). second piston, +
711, the second cylinder f4+ζ is slidably provided r
This third piston, the ring is provided at the tip of the second piston (2) and is the first holding plate, the ring is provided at the tip of the eighth piston q4 and is the second holding plate, - is the second holding plate. The second compression spring provides the force to push the first presser plate in the direction of the second presser plate, and the third compression spring provides the force to push the second presser plate in the direction of the first presser plate. , ■ is the first cylinder C4
, second cylinder (+141.M2 piston qQ, third piston (c), first presser plate group.

Holding means consisting of a second presser plate ea, a second compression spring (to), and an eighth compression spring diagram, ... is an eighth cylinder that holds the first piston e4 in a slidable manner, V4 is the eighth cylinder A mounting plate - for fixing the cylinder to the column (2) is provided in the third cylinder, and slides the first piston - in one direction on the first flange to connect the second 7-lunge eQt first. The return spring that applies an opposing force to the flange of the third cylinder, - acts a force that separates the first piston from the first flange, against the force of the return spring in the third cylinder. Air (to) is an inlet for introducing air into the eighth cylinder, and (6) is for the second flange. Second bearing - 3 First piston - 1 A plurality of second winding shafts - 0 Eighth cylinder, return spring 6 Sliding means consisting of an inlet (to) (10IJ is a winding means (55d7)
This is a wire electrode removal section that removes a wire electrode (1G) from the wire electrode.

Figure 8 shows the wire winding means (7) with a perspective view, the fourth
The reason is that the distance between the first and second flanges (T) and rings is m in the wire winding means (2).The fifth reason is that the wire winding means winds up the wire electrode αa′ft. The sixth factor is the wire winding means.
FIG. 2 is a diagram showing how the wire electrode (roll) wound up is being discharged; each component is the same as that in FIG. 2, so a description thereof will be omitted.

Next, the operation will be explained. Note that the method of tensioning the wire electrode αO to the feeding path and the method of electrical discharge machining are the same as those shown in the conventional example for π, so the explanation thereof will be omitted. The collection method will be explained.

First, when the wire electrode αO is stretched on the feeding route, the wire winding means vessel is opened in the following steps.
A holding operation of the wire electrode αG is performed. That is, air supplied from a non-hydrating air source is introduced from the inlet of the third cylinder to move the first piston against the force of the return spring. Separate yourself from Funji's side. Due to this separating operation, the second
The second presser plate provided on the flange 64) is also separated, and the wire winding means (a) becomes open.

Next, the wire electrode α is sent out from the wire delivery means.
It is determined that G has reached between the first and second presser plates, for example, by detecting the time when the wire is sent out to the pole αO, and the air introducing operation is stopped, and Perform the exhaust operation. When the air is exhausted by this one action, the first piston is pushed out toward the first flange by the elastic force of the return spring.
The wire electrode αart is sandwiched between the first and second presser plates. Furthermore, the Weisse'fIt pole σG is reliably held by the strong elastic forces of the second and eighth compression springs (2) and (H). Also, at the same time as this operation, the plurality of second winding shafts move into the concave portion (56aJ) of the wire removing means.
and is compressed by the first compression spring (56t) J' to push the plate (56a) toward the first flange. Then, after the first piston is completely pushed out in the direction of the first flange, rotate the motor. As a result of this operation, the T wire electrode αQ, which is sandwiched between the first and second holding plates
and the second plurality of winding shafts [4, M are continuously wound around the outer periphery of the winding shafts [4, M].

Now, the wire *SaO wound up in this manner is removed at an appropriate time point according to the procedure shown below. First, the feeding of the wire electrode QO is stopped and π
At this point, the wire electrode αQ is wound by the wire winding means (2) and cut at the end of the winding, and air sakaki is introduced into the inlet (end) of the eighth cylinder. By introducing this air, as shown in FIG. 4 again, the first piston 41i4
'It should be separated from the first flange side. At this time, the wire electrode α held between the first and second holding plates
0 is opened, the mounting radius of the plurality of second winding shafts provided on the second flange... side is The installation of the winding shaft is set slightly smaller than the radius, so the wire 1 that has already been wound! The pole αG is a plurality of first
It will remain on the outer periphery of the winding shaft (goods). Furthermore, as the amount of air introduced increases, the opening gap of the wire winding means becomes larger, and the plate of the wire removing means becomes larger.
) is pushed out by the first compression spring (56 bJ of elastic force,
The wire electrodes wound around the outer peripheries of the plurality of first winding shafts are pushed out in the 1017 direction, and when the plate (56aJ) is fully extended, the plurality of wire electrodes are removed as shown in FIG. The wire electrode αG wound around the outer periphery of the first winding shaft is discharged to, for example, a wire collection box, and the operation is completed.

〔Effect of the invention〕

As described above, according to the present invention, a wire winding means is provided on the wire electrode delivery side of the wire delivery means, and the used wire electrode is automatically held and then wound up after being sent out from the wire delivery means. Furthermore, by retracting and opening the sliding means of the winding means, the wound wire electrode can be automatically removed, so that the wire electrode is not wound around the wire delivery means. This also has the effect of providing something that does not require monitoring.

[Brief explanation of the drawing]

FIG. 1 shows a wire electrical discharge machining apparatus according to an embodiment of the present invention.
FIG. 2 is a detailed view showing a wire winding means according to an embodiment of the invention, FIG. 3 is a perspective view showing a wire winding means according to an embodiment of the invention, and FIG. FIG. 5 is a diagram showing how the wire winding means according to an embodiment of the present invention is opened; FIG. 5 is a diagram showing how the wire winding means according to an embodiment of the present invention is winding up a wire electrode; The seventh figure is a diagram showing the configuration of a conventional wire electric discharge machining device. In FIG. 1γ, QG is a Wise W pole, (G) is a wire carrying means, Moe is a wire winding means, (Foundation) is a motor, Flash is a wire removing means, (56bJ is a winding means, ■ is a holding means, (B) is a sliding means, and (1017 is a wire electrode removal part.) In the figures, the same reference numerals indicate the same parts.

Claims (1)

[Claims] A wire electrical discharge machining device equipped with a wire discharging means provided in a wire electrode feeding path and transporting the wire electrode subjected to processing to the outside of the feeding path, a winding section for winding the wire electrode and a winding portion for winding the wire electrode. A winding means consisting of a wire electrode removal part for removing the wire electrode to the outside, a drive means for rotationally driving the winding means, and having the same rotation axis as the winding means and freely rotating, a sliding means that is reciprocably provided opposite to the wire electrode removing section of the winding means and that fits into the winding means and closes the wire electrode removing section; the winding means and the sliding means; Holding means are provided on opposite sides of the wire electrodes, and hold the tip of the wire electrode sent out from the wire delivery means when the sliding means completes its movement in the direction of the winding means; a wire removing means provided on the winding means and sending out the wire electrode wound on the winding section toward the wire electrode removing section as the sliding means moves away from the winding means; A wire electrical discharge machining apparatus characterized in that means is provided on the wire electrode sending side of the wire conveying means.