JPH0243621Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Technical Field" The present invention relates to an electrode attachment device for detachably attaching an electrode to an electrical discharge machine.

"Prior Art and its Problems" Electrical discharge machines can make holes in hard materials such as cemented carbide, and are used for manufacturing press molds and the like. The electrode of an electric discharge machine must be replaced depending on the shape of the intended hole, etc., and for this reason, the electric discharge machine is provided with a device for detachably attaching the electrode.

Conventionally, as shown in FIG. 9, such an electrode mounting device has been provided with an angular accommodating portion 13 in which the electrode 12 is installed in a main body 11 that is detachably attached to an electrical discharge machine, and an X-axis fixing bolt 14 and A device in which the electrode 12 is pressed and fixed toward the housing portion 13 using a Y-axis fixing bolt 15 has been used.

However, in the conventional electrode mounting device as described above, it is necessary to tighten both the X-axis fixing bolt 14 and the Y-axis fixing bolt 15 to fix the electrode 12, which makes the replacement operation complicated.
Workability was not good. In addition, the X-axis fixing bolt 1
It was difficult to adjust the tightening of the Y-axis fixing bolts 4 and Y-axis fixing bolts 15, and the pressing force was not uniform, causing the electrode 12 to wobble during electrical discharge machining. Furthermore, if the electrode 12 is a round bar, etc., the X-axis fixing bolt 1
4 and the tips of the Y-axis fixing bolts 15 may become misaligned, causing the electrode 12 to come off.

``Purpose of the invention'' The purpose of the invention is to solve the problems of the prior art described above, and to create a discharge discharge system that makes it possible to easily replace the electrodes and firmly fix the electrodes with uniform pressing force. An object of the present invention is to provide an electrode attachment device for a processing machine.

"Structure of the invention" The electrode mounting device of the electrical discharge machine according to the invention is as follows:
a main body that is detachably attached to an electric discharge machine and has an electrode housing section; an X-axis slider that is attached to the main body so as to be slidable in the X-axis direction;
an X-axis fixed arm that is attached to the axis slider and presses the electrode in the X-axis direction; a Y-axis slider that is attached to the body so as to be slidable in the Y-axis direction; and an X-axis fixed arm that is attached to the Y-axis slider and presses the electrode in the Y-axis direction; A Y-axis fixed arm that presses in the Y-axis direction, an XY interlocking member pivotally supported on the main body so as to be swingable within the XY plane, the X-axis slider and the XY interlocking member are connected, and the X-axis slider is It includes an X-axis bolt that slides, and a Y-axis bolt that connects the Y-axis slider and the XY interlocking member and slides the Y-axis slider.

Therefore, positioning the upper part of the electrode in the housing part,
When the X-axis bolt and Y-axis bolt are tightened, the X-axis slider and Y-axis slider will slide.
Accordingly, the X-axis fixing arm and the Y-axis fixing arm press the electrode toward the housing part, and the electrode is fixed. In this case, after pressing the electrode to some extent,
When either the X-axis bolt or the Y-axis bolt is tightened, the other bolt is pulled through the XY interlocking member, so the X-axis slider and Y-axis slider slide simultaneously, and the X-axis fixed arm and Y-axis fixed arm are tightened. Both arms press against the electrode. In this way, by tightening either the Y-axis bolt or the Y-axis bolt, pressure is applied by both the X-axis fixed arm and the Y-axis fixed arm, so the pressing force is equalized and the electrode is held firmly. Can be fixed. In addition, when replacing the electrode, the electrode can be easily removed by loosening either the X-axis bolt or the Y-axis bolt.
Extremely easy to operate.

``Embodiment of the invention'' FIGS. 1, 2, and 3 show an embodiment of the electrode attachment device according to the invention.

In particular, as shown in FIG. 2, this electrode attachment device 21 has a main body 22 formed in an angled shape, and the angled portion forms a housing portion 24 for an electrode 23. As shown in FIG. A plurality of mounting holes 25 are formed on the upper surface of the main body 22, and these mounting holes 25 are connected to the electrical discharge machine.
It can be detachably attached to the electric discharge machine via bolts 26 etc. fixed to the electric discharge machine. A member 27 having a trapezoidal shape in plan view is attached to the upper part of the accommodating part 24, and a pin 29 is inserted into a gap 28 formed between this member 27 and the accommodating part 24. The pin 29 is connected to a screw 30 attached to the member 27.
The upper end of the electrode 23 is positioned by being pressed and fixed by the upper end of the electrode 23. An X-axis slider 31 is attached to the main body 22 so as to be slidable in the X-axis direction, and an X-axis fixing arm 32 that presses the electrode 23 in the X-axis direction is attached to the tip of the X-axis slider 31. In this case, a through hole 33 is formed in the X-axis fixed arm 32, and the X-axis fixed arm 32 is fixed to the X-axis slider 31 by a screw 34 inserted into the through hole 33. By moving the fixed part by the screw 34 along the
The protrusion length can be adjusted. Similarly, a Y-axis slider 35 is attached to the main body 22 so as to be slidable in the Y-axis direction.
A Y-axis fixing arm 36 is attached to the tip of the electrode 5 to press the electrode 23 in the Y-axis direction. A through hole 37 is formed in the Y-axis fixing arm 36, and the Y-axis fixing arm 36 is fixed to the Y-axis slider 35 by a screw 38 inserted through the through hole 37. Furthermore, machining fluid injection ports 39 and 40 are formed in the main body 22, and machining fluid injection pipes (not shown) are attached to these machining fluid injection ports 39 and 40.

In particular, as shown in FIG.
has a tongue piece 41 protruding from inside the slide groove, and an X-axis bolt 42 is inserted through this tongue piece 41. The X-axis bolt 42 is adapted to be rotated by a knob 43. Similarly, the Y-axis slider 35 has a tongue piece 44 protruding from within its slide groove.
A Y-axis bolt 45 is inserted through this tongue piece 44. The Y-axis bolt 45 is adapted to be rotated by a knob 46. Note that 47 and 48 are nuts that restrict the axial movement of each bolt 42 and 45. At the rear corner of the main body 22, an XY interlocking member 49 is pivotally supported by a pin 50 so as to be swingable within the XY plane. In this case, the XY interlocking member 49 is always urged by a spring (not shown) to return to the neutral position. Further, the XY interlocking member 49 has a notch 51, and this notch 51
Inside, blocks 52 and 53 are connected to pins 54 and 53, respectively.
54 so as to be rotatable. The tip of the X-axis bolt 42 is screwed into a screw hole 55 passing through the block 52, and the Y-axis bolt 42 is screwed into a screw hole 55 passing through the block 52.
The tip of the block 53 is screwed into a screw hole 56 passing through the block 53. Further, a plurality of machining fluid jet ports 57 are formed on the bottom surface of the main body 22 so as to surround the electrode 23, and these machining fluid jet ports 57 communicate with the machining fluid inlets 39 and 40 described above. .

Next, how to use this electrode attachment device 21 will be explained.

First, the upper end portion of the electrode 23 is brought into contact with the housing portion 24 . In that case, by loosening the screw 30 and moving the pin 29 up and down, the upper end regulating position of the electrode 23 can be adjusted, and the length of the downward protrusion of the electrode 23 can be adjusted. Next, for example, by turning the knob 43 to rotate the X-axis bolt 42 and moving the screwed part to the block 52 at its tip, the X-axis slider 31 is moved to the
Slide in the axial direction. Then, as shown in FIG. 4, the tip of the X-axis fixed arm 32 is moved to an appropriate distance x from the electrode 23. Similarly, by turning the knob 46 to rotate the Y-axis bolt 45 and moving the threaded part on the block 53 at its tip, the Y-axis slider 35 is slid in the Y-axis direction via the tongue piece 44. . Then, as the knob 46 is rotated, as shown in FIG.
The tip of the shaft fixing arm 36 contacts the electrode 23.
Furthermore, when the knob 46 is rotated, the Y-axis fixed arm 36 contacts the electrode 23 and does not move, so the sixth
As shown in the figure, the interlocking member 49 rotates, the X-axis fixed arm 32 comes into contact with the electrode 23, and the electrode 23
The shaft fixing arm 32 and the Y-axis fixing arm 36 press and fix it. In this case, Y-axis bolt 4
Since the clamping force of 5 is applied equally to the X-axis fixing arm 32 and the Y-axis fixing arm 36 via the interlocking member 49, the electrode 23 can be firmly pressed and fixed with an even force. Furthermore, when removing the electrode 23, by turning the knob 46 and loosening the Y-axis bolt 45, the spring contained in the interlocking member 49 causes the interlocking member 49 to return to the neutral position, as shown in FIG. As shown in the X-axis fixed arm 3
2 returns to a distance x from the electrode 23. Then, when the Y-axis bolt 45 is further loosened, the Y-axis fixing arm 36 also separates from the electrode 23, as shown in FIG.
Electrode 23 can be easily removed. If the diameter of the electrode 23 to be replaced is almost the same, insert the upper part of the electrode 23 to be replaced into the accommodating part 24 and tighten either the X-axis bolt 42 or the Y-axis bolt 45 to remove the electrode. 23 can be fixed. Therefore, the electrode 23 can be replaced extremely easily. In addition, the machining fluid injected from the machining fluid inlets 39 and 40 is ejected from the machining fluid spout 57 provided near the electrode 23 and thoroughly wets the electrode 23, thereby cooling the machining part and removing chips. Removal can be carried out effectively.

In the above embodiment, the X and Y directions in which the sliders 31 and 35 slide are orthogonal to each other, but the sliding directions of the sliders do not necessarily need to be orthogonal to each other.

"Effect of the invention" As explained above, according to the invention, the X-axis bolt that drives the X-axis slider and the Y-axis bolt that drives the Y-axis slider are interlocked by the XY interlocking member. Therefore, by turning either one of the bolts, the X-axis slider and the Y-axis slider can be slid at the same time. This allows the X-axis fixed arm and the
Since the shaft fixing arms also move at the same time, the electrodes can be firmly fixed by equalizing the pressing force from each arm. Further, since the electrode can be fixed and removed by turning either the X-axis bolt or the Y-axis bolt, the electrode replacement operation becomes extremely easy. Furthermore, the X-axis fixed arm and Y-axis fixed arm can be precisely controlled by each slider.
Since it moves in the XY directions, even if the shape of the electrode is, for example, a round bar, there will be no displacement of the pressing part of the electrode.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the electrode mounting device according to the present invention, FIG. 2 is a top perspective view of the electrode mounting device, FIG. 3 is a bottom perspective view of the electrode mounting device, and FIGS. Figures 5, 6, 7 and 8
The figure is a schematic plan view for explaining the operation of the electrode mounting device, and FIG. 9 is a plan view schematically showing a conventional electrode mounting device. In the figure, 21 is an electrode attachment device, 22 is a main body, 2
3 is an electrode, 24 is a housing part, 31 is an X-axis slider, 32 is an X-axis fixing arm, 35 is a Y-axis slider, 36 is a Y-axis fixing arm, 42 is an X-axis bolt,
45 is a Y-axis bolt, 45 is an XY interlocking member, 50 is a pin, 52 and 53 are blocks, 54 is a pin, 5
5 and 56 are screw holes.

Claims (1)

[Scope of utility model registration request] a main body that is detachably attached to an electric discharge machine and has an electrode housing; an X-axis slider that is attached to the main body so as to be slidable in the X-axis direction; an X-axis fixed arm that presses the electrode in the Y-axis direction; a Y-axis slider that is attached to the main body so as to be slidable in the Y-axis direction; and a Y-axis fixed arm that is attached to the Y-axis slider and presses the electrode in the Y-axis direction. , an XY interlocking member pivotally supported on the main body so as to be swingable in the XY plane, an X-axis bolt that connects the X-axis slider and the XY interlocking member and slides the X-axis slider, and the Y-axis slider. and the XY interlocking member and the Y
An electrode mounting device for an electrical discharge machine, comprising: a Y-axis bolt for sliding an axis slider.