JP6824007B2 - Wire electric discharge machine - Google Patents

Description

The present invention relates to a wire electric discharge machine that processes an workpiece with a wire electrode.

The wire electric discharge machine supplies a wire electrode to a place where a work piece is placed, and generates a discharge between the wire electrode and the work piece to process the work piece. A wire supply mechanism for supplying a wire electrode is provided above (see Patent Documents 1 and 2). The wire supply mechanism is normally partially or wholly covered from the front side by an opening / closing member. During maintenance of the wire supply mechanism, the opening / closing member is opened and the front side of the wire supply mechanism is exposed.

Japanese Unexamined Patent Publication No. 08-318433 Japanese Unexamined Patent Publication No. 11-165218

Conventionally, as shown in FIGS. 6A and 6B, the opening / closing member 100 is attached to the cover body 102 by a hinge 101, and rotates about a virtual vertical axis with reference to the hinge 101. Then, it moves from the front side of the wire supply mechanism to expose the front side of the wire supply mechanism.
In order for the opening / closing member 100 to rotate, it is necessary to secure a space in front of the wire supply mechanism for the opening / closing member 100 to rotate, and this also applies to the opening / closing member that rotates around a virtual horizontal axis. is there.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a wire electric discharge machine capable of suppressing an increase in the space to be secured in front of a wire supply mechanism for opening and closing an opening / closing member. To do.

In the wire discharge processing machine according to the present invention according to the above object, a wire supply mechanism is arranged above the processing tank at a distance, and a wire electrode sent out from the wire supply mechanism is stretched in the processing tank. In the wire discharge processing machine for processing the workpiece, the front side is opened, and a cover body in which a part or the whole of the wire supply mechanism is arranged inside is rotatably connected to the cover body on the base side. An arm that rotates around a first virtual horizontal axis, an auxiliary support that is rotatably connected to the cover body and rotates around a second virtual horizontal axis, and the auxiliary support that can move. A guide attached to the arm, the tip side of the arm is attached to the arm, and an opening / closing member that rotates about the third virtual horizontal axis with respect to the tip side of the arm. The opening / closing member moves the lower part upward by the rotation of the arm and the auxiliary support from the state where the wire supply mechanism is covered from the front side, so that the front side of the wire supply mechanism is exposed. The opening / closing member covering the front side of the supply mechanism is arranged above the processing tank at a distance from the processing tank, and the opening / closing member covers the front side of the wire supply mechanism. A slide member that descends from the wire supply mechanism and covers the space between the processing tank is movably attached.

In the wire electric discharge machine according to the present invention, it is preferable that one side and the other side of the auxiliary support are connected to the cover body by hinges fixed to the cover body and the auxiliary support body, respectively.

In the wire electric discharge machine according to the present invention, the auxiliary support preferably has a roller that rolls the guide.

In the wire electric discharge machine according to the present invention, it is preferable that the slide member is maintained in a state of covering the space between the wire supply mechanism and the processing tank by a magnetic force.

In the wire discharge processing machine according to the present invention, the front side is opened and a part or the whole of the wire supply mechanism is rotatably connected to the cover body, and the base side is rotatably connected to the cover body. It has an arm that rotates around an axis, an auxiliary support that is rotatably connected to the cover and rotates around a second virtual horizontal axis, and a guide that is movably mounted on the auxiliary support. The front side of the arm is attached, and the opening / closing member is provided with an opening / closing member that rotates with respect to the arm about a third virtual horizontal axis with reference to the front side of the arm. The opening / closing member covers the wire supply mechanism from the front side. From this state, the lower part moves upward by the rotation of the arm and the auxiliary support to expose the front side of the wire supply mechanism, so secure it in front of the wire supply mechanism to open and close the opening / closing member. It is possible to prevent the power space from becoming large.

It is a front view of the wire electric discharge machine which concerns on one Embodiment of this invention. It is explanatory drawing of the mechanism which opens and closes an opening and closing member. It is explanatory drawing of the mechanism which opens and closes an opening and closing member. It is explanatory drawing which shows the state of opening and closing the opening and closing member. It is explanatory drawing of the slide member. (A) and (B) are explanatory views of the opening / closing member of the wire electric discharge machine according to the conventional example, respectively.

Subsequently, an embodiment embodying the present invention will be described with reference to the attached drawings, and the present invention will be understood.
As shown in FIG. 1, in the wire electric discharge machine 10 according to the embodiment of the present invention, the wire supply mechanism 12 is arranged above the processing tank 11 at a distance, and the wire is sent out from the wire supply mechanism 12. The electrode is stretched to process the workpiece in the processing tank 11. The details will be described below.

As shown in FIG. 1, the wire electric discharge machine 10 includes a processing tank 11, a processing tank cover 13 that covers the processing tank 11, and a wire supply mechanism 12 that is arranged above the processing tank 11 and supplies wire electrodes. A plurality of metal covers 39 to 44 for covering various members such as a motor are provided. The processing tank cover 13 is made of a magnetic material, and the wire supply mechanism 12 has a guide roller (not shown) for guiding the wire electrode.

Further, as shown in FIGS. 1 and 2, the wire electric discharge machine 10 has a horizontally arranged upper plate portion 51 and a side wall portion 52 whose upper ends are connected to both ends in the longitudinal direction of the upper plate portion 51. The cover body 54 including the 53 is provided at the same height as the wire supply mechanism 12.
A part or the whole of the wire supply mechanism 12 is arranged inside the cover body 54 whose front is open, that is, between the side wall portions 52 and 53, and the cover body 54 is a dust or the like floating in the air. Is prevented from adhering to the wire supply mechanism 12. As shown in FIGS. 1, 2, and 3, hinges 55 and 56 are attached to the front side of the upper plate portion 51 at intervals. As shown in FIG. 2, one side of the hinges 55 and 56 is fixed to the upper plate portion 51, and the other side of the hinges 55 and 56 is a long angle member 58 in the left-right direction as shown in FIGS. 2 and 3. It is fixed to the left end and the right end of the.

As shown in FIGS. 2 and 3, reinforcing members 59 and 60 are fixed to the left and right ends of the angle member 58, respectively, via a plurality of shaft members 61 to the front side of the left end of the angle member 58, respectively. A plurality of free rollers (an example of a roller) 61a are attached, and a plurality of free rollers (an example of a roller) 61b are attached to the front side of the right end portion of the angle member 58 via a plurality of shaft members 61, respectively.
An opening / closing member 62 that covers the wire supply mechanism 12 from the front side is provided at a position at a distance from the processing tank 11 above the processing tank 11 and on the front side of the cover body 54. In the present embodiment, unless otherwise specified, the arrangement of each member is described with reference to the state in which the opening / closing member 62 is closed.

As shown in FIGS. 2 and 3, the opening / closing member 62 includes a front plate portion 63 arranged on the front side of the wire supply mechanism 12, and a side wall portion 64 in which the front ends are connected to the left and right ends of the front plate portion 63, respectively. It has 65, and the upper and lower sides and the rear side are open. On the side wall portions 64 and 65, a left guide (an example) 66 that is long in the vertical direction in which a plurality of free rollers 61a are in contact from the left and right and a right guide (a guide) that is long in the vertical direction in which a plurality of free rollers 61b are in contact from the left and right Example) 67 is fixed via a support (not shown).

Each free roller 61a can roll the left guide 66, and each free roller 61b can roll the right guide 67.
In the present embodiment, the auxiliary is rotatably connected to the cover body 54 by hinges 55 and 56 mainly by an angle member 58, reinforcing members 59 and 60, a plurality of shaft members 61 and a plurality of free rollers 61a and 61b. The support 68 is configured. That is, the auxiliary support 68 has a free roller 61a that rolls the left guide 66 and a free roller 61b that rolls the right guide 67.

The cover body 54 has a left arm (an example of an arm) 70 whose base side is rotatably connected to a side wall portion 52 via a shaft member 69 and a base side which is rotatable to a side wall portion 53 via a shaft member 71. A right arm (an example of an arm) 72 connected to is attached. The shaft members 69 and 71 have the same front-rear direction position and height position, and the left arm 70 and the right arm 72 have the same shape. The left arm 70 and the right arm 72 have the first virtual horizontal axis as shown in FIGS. 2 and 4, with the virtual axis arranged along the axis of the shaft members 69 and 71 as the first virtual horizontal axis. It can rotate around the axis.

As shown in FIGS. 2 and 3, the front side of the left arm 70 is rotatably connected to the side wall portion 64 of the opening / closing member 62 via the shaft member 73, and the front side of the right arm 72 is the shaft member. It is rotatably connected to the side wall portion 65 of the opening / closing member 62 via the 74. The shaft members 73 and 74 have the same front-rear direction position and height position. The opening / closing member 62 is the front side of the left arm 70 and the right arm, as shown in FIGS. 2 and 4, with the virtual axis arranged along the axis of the shaft members 73 and 74 as the third virtual horizontal axis. It can rotate with respect to the left arm 70 and the right arm 72 about the third virtual horizontal axis with reference to the front side of 72. The left arm 70 and the right arm 72 are provided with dampers 75 and 76, which give resistance to the rotational movement of the opening / closing member 62 with respect to the left arm 70 and the right arm 72, respectively.

The auxiliary support 68 is rotatable about the second virtual horizontal axis, with the virtual axis arranged in the left-right direction at the center of the hinges 55 and 56 as the second virtual horizontal axis.
Therefore, as shown in FIGS. 2 and 4, the left arm 70 and the right arm 72 are first virtualized by applying an upward force to the opening / closing member 62 in a state where the wire supply mechanism 12 is covered from the front side. The auxiliary support 68 rotates around the horizontal axis, the auxiliary support 68 rotates around the second virtual horizontal axis, and the free rollers 61a and 61b roll the left guide 66 and the right guide 67, respectively.

Due to the rotation of the left arm 70, the right arm 72, and the auxiliary support 68, the opening / closing member 62 moves relative to the auxiliary support 68, and the left arm 70 and the right arm are centered on the third virtual horizontal axis. Rotating with respect to 72, the lower part moves upward. As a result, the opening / closing member 62 that covers the wire supply mechanism 12 from the front side leaves the front side of the wire supply function 12 exposed.
Hereinafter, the state in which the opening / closing member 62 covers the wire supply mechanism 12 from the front side is also referred to as a state in which the opening / closing member 62 is closed, and the state in which the opening / closing member 62 exposes the front side of the wire supply function 12 is a state in which the opening / closing member 62 is opened. Also called a state.

The rear side of the upper end of the opening / closing member 62 approaches the front side of the upper end of the cover body 54 with the opening / closing member 62 closed, and as the lower portion of the opening / closing member 62 moves upward, the upper end of the cover body 54 Gradually move away from the front side of.
By adopting the above-mentioned design in relation to the movement of the opening / closing member 62, the opening / closing member is changed from the closed state to the open state while keeping the predetermined position of the opening / closing member and the predetermined position of the cover body close to each other. In comparison with the above, when the opening / closing member 62 is changed from the closed state to the open state, it is possible to suppress an increase in the space to be secured in front of the wire supply mechanism 12.

As shown in FIG. 3, the opening / closing member 62 is provided with a bar 78 fixed to the left guide 66 and the right guide 67 and arranged in the left-right direction, and a handle 79 fixed to the bar 78. .. The operator can open and close the opening / closing member 62 by holding the handle 79 and applying a force to the opening / closing member 62. In addition, in FIGS. 2 and 4, the description of the bar 78 is omitted.

Further, as shown in FIG. 5, a slide member 81 is attached to the inside of the opening / closing member 62 so as to be movable in the vertical direction. The slide member 81 has a shape in which the left and right sides of a vertically arranged rectangular plate-shaped object are bent rearward, and is connected to a spring 80 arranged at the substantially center of the opening / closing member 62, with a space at the lower end. The arranged permanent magnets 82 and 83 are attached.
As shown in FIG. 5, the slide member 81 is arranged at the upper limit position accommodated in the opening / closing member 62 by the pulling force of the mainspring 80 in a state where no downward force is applied.

The left and right sides of the slide member 81 are movably connected to a vertically long left guide 84 and a right guide 85 fixed to the opening / closing member 62, respectively, and the opening / closing member 62 is subjected to a downward force. As shown in FIG. 1, the permanent magnets 82 and 83 descend along the left guide 84 and the right guide 85 until they come into contact with the upper ends of the processing tank cover 13, respectively.

The slide member 81 covers the space between the wire supply mechanism 12 and the processing tank 11 by lowering the permanent magnets 82 and 83 until they come into contact with the upper end of the processing tank cover 13. Since the processing tank cover 13 is a magnetic material, the permanent magnets 82 and 83 in contact with the processing tank cover 13 are in a state where the slide member 81 covers the space between the wire supply mechanism 12 and the processing tank 11 by magnetic force. maintain.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions that do not deviate from the gist are within the scope of the present invention.
For example, the auxiliary support may be connected to the cover body by a member other than the hinge.
Further, the auxiliary support does not need to have a roller, and may have, for example, a block that moves along a guide.
The slide member is not always necessary, and when the slide member is provided, it is not necessary to maintain the state in which the slide member covers the space between the wire supply mechanism and the processing tank by magnetic force.

10: Wire discharge processing machine, 11: Processing tank, 12: Wire supply mechanism, 13: Processing tank cover, 39 to 44: Metal cover, 51: Top plate part, 52, 53: Side wall part, 54: Cover body, 55 , 56: Hinge, 58: Angle material, 59, 60: Reinforcing material, 61: Shaft material, 61a, 61b: Free roller, 62: Opening and closing member, 63: Front plate part, 64, 65: Side wall part, 66: Left Guide, 67: Right guide, 68: Auxiliary support, 69: Shaft, 70: Left arm, 71: Shaft, 72: Right arm, 73, 74: Shaft, 75, 76: Damper, 78: Bar , 79: Handle, 80: Hinge spring, 81: Slide member, 82, 83: Permanent magnet, 84: Left guide, 85: Right guide

Claims (4)

In a wire electric discharge machine in which a wire supply mechanism is arranged at a distance above the processing tank, and a wire electrode sent out from the wire supply mechanism is stretched to process a workpiece in the processing tank.
A cover body in which the front side is opened and a part or the whole of the wire supply mechanism is arranged inside.
An arm whose base side is rotatably connected to the cover body and rotates about a first virtual horizontal axis,
An auxiliary support that is rotatably connected to the cover and rotates about a second virtual horizontal axis.
The auxiliary support has a movably mounted guide, the front side of the arm is attached, and the auxiliary support rotates about the third virtual horizontal axis with reference to the front side of the arm. Equipped with an opening / closing member
The lower part of the opening / closing member moves upward by the rotation of the arm and the auxiliary support from the state of covering the wire supply mechanism from the front side, so that the front side of the wire supply mechanism is exposed.
The opening / closing member covering the front side of the wire supply mechanism is arranged above the processing tank at a distance from the processing tank.
A slide member that descends from the opening / closing member that covers the front side of the wire supply mechanism and covers the space between the wire supply mechanism and the processing tank is movably attached to the opening / closing member. A wire electric discharge machine characterized by. The wire electric discharge machine according to claim 1 , wherein the slide member is maintained in a state of covering the space between the wire supply mechanism and the processing tank by a magnetic force. In the wire electric discharge machine according to claim 1 or 2 , the auxiliary support is connected to the cover by hinges having one side and the other side fixed to the cover and the auxiliary support, respectively. A characteristic wire electric discharge machine. The wire electric discharge machine according to any one of claims 1 to 3 , wherein the auxiliary support has a roller that rolls the guide.

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