JPH05337745A - Wire right-angling and vertical wire guide aligning jig in wire electrodischarge machine - Google Patents

Abstract

PURPOSE:To detect a job for wire right-angling of a wire electrodischarge machine and a distance between both upper and lower wire guide positions automatically and accurately. CONSTITUTION:A jig is featured that each of detecting surfaces 1A, 1B and 2, uncontacted with a wire, is installed in both upper and lower parts in and around each corner of two surfaces orthogonal with each other, while an incline 6, having each detecting surface uncontacted with the wire at the same time, is installed in at least one of the orthogonal surfaces or other surfaces orthogonal with the surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire right angle and vertical wire guide positioning jig in a wire electric discharge machine in which wire right angle and vertical wire guide positioning are accurate and easy.

[0002]

2. Description of the Related Art In a wire electric discharge machine, a wire right angle jig is used to manufacture accurate mold parts.
It is absolutely necessary to take the wire vertically, and therefore, there is provided a wire electric discharge machine manufacturer that can be installed and installed on the table. This jig is made of stainless steel or the like and has a rectangular parallelepiped shape.When used, the jig is placed and fixed on the table, and the wire is made vertical by using the vertical line as a reference and discharged. ,
Compare the line formed by the discharge to the reference vertical line,
I try to determine the verticality of the wire. Therefore, the vertical determination of the wire is not always accurate, and it is difficult to obtain accurate accuracy of the mold parts and the like.

Therefore, as an option, upper and lower detection surfaces are provided in the middle of orthogonal vertical surfaces, wires are brought into contact with these detection surfaces, and it is determined by the contact state whether the contact is up or down. Some of the devices detect the verticality of the wire by detecting it with an electric circuit connected thereto, but a power supply circuit and a control code for that are required, and it is necessary to insulate the upper and lower detection surfaces.

Further, when performing simultaneous four-axis machining, the positions of the upper and lower wire guides that support and guide the wires are accurately calculated, and the respective wire guides are set at predetermined positions within the horizontal plane of the reference positions. Although the work is performed by moving it so as to draw a trajectory, the upper and lower wire guide positions usually need to be constantly changed according to the processed member, and even then the upper and lower wire guides can be moved simultaneously in the X and Y directions. The distance between the upper and lower wire guides does not matter in the case of simultaneous two-axis machining that moves equally, but when performing simultaneous four-axis machining, the distance between the upper and lower wire guides in the vertical direction must be calculated accurately. There is a need. However, in the past, even the vertical position could not be automatically determined accurately, and it was not easy to find the distance between the upper and lower wire guides.

[0005]

The problem to be solved is that it is not possible to automatically and accurately position the wire vertically and position the upper and lower wire guides in the wire electric discharge machine.

[0006]

SUMMARY OF THE INVENTION According to the present invention, the wires are brought into contact with the upper and lower contact sensing surfaces separately, and the wires are vertically extended by moving the distances in the opposite directions according to the difference, and then the wires are obtained. From the vertical position, the upper and lower wire guides are moved in opposite directions on the respective horizontal planes to sense the wires on the inclined surface, and the upper and lower wire guides are positioned according to the moving distance and the inclination angle. Moreover,
This is a simple structure that does not require an extra circuit configuration, and can automatically perform vertical alignment of wires and alignment of upper and lower wire guides.

[0007]

1 is a perspective view of an embodiment of a jig A of the present invention, in which 1A and 1B are upper contact sensing surfaces, 2 and 3 are lower contact sensing surfaces, and 4 and 5 are inclined surfaces. A touch sensing surface is provided above and below 6, and a hole 7 is provided for fixing and fixing the jig A on the table. The height of the jig A is about 50 mm in this embodiment, but it can be selected to any size. Although the thickness, width and vertical length of the touch sensing surfaces 1A, 1B, 2 to 5 can be arbitrarily selected, it is preferable that the thickness is approximately 1 mm, the width is approximately 4,5 mm, and the vertical length is approximately 2 mm.

FIG. 2 is an explanatory view for obtaining the distance between the upper and lower positions of the wire guides. E and C show the positions of the upper and lower wire guides when vertical, and F and D show the upper and lower wire guides move horizontally. Position in the state of being inclined by α °, G
Is a line that passes through point D and is parallel to CE, and intersects with the extension of line EF. TL is the distance between the table surface T and the lower wire guide, and TU is the table surface T and the upper wire guide. Distance of T
0 is the height of the vertical surface below the inclined surface, and Va is FG
The distance, Ya, is the distance between C and D.

To obtain the perpendicularity to the Y direction, first, a wire is brought into contact with the touch sensing surface 2. Then, it is grounded through the jig A through the touch sensing surface, so that the voltage drops and it is sensed that the touch is made. Next, it moves in the X direction and is brought into contact with the touch sensing surface 1A, but if there is a movement in the Y direction from the time of contact with the touch sensing surface 2 by that time, the distance is calculated, and the calculated value is used as a factor. Then, it is moved in the opposite direction by numerical control to find the verticality in the Y direction. The same applies to the X direction.

The upper and lower wire guide positions when the vertical wire W obtained as described above is brought into contact with the lower contact surface 5 of the inclined surface 6 are set to E and C, and then the upper and lower wire guides are set to incline the wire W. Is moved in the horizontal plane, and the upper and lower wire guide positions when the wire W contacts the upper contact sensing surface 4 are F and D, and the tilt angle at that time is α. Tu = C0tα (Va−Ya), TL = C0tα · Ya, and the distance between the upper and lower wire guide positions can be expressed as Tu + TL = C0tα (Va−Ya) + C0tα · Ya. Since it is a value that can be set, the angle α is, for example, 3 ° (17 ° due to machine operation).
The following is preferable), and the distance between the upper and lower wire guide positions can be immediately obtained from those numerical values. An NC program for that purpose will be created separately.

FIG. 3 shows a vertical surface having a height T0 provided on the lower side of FIG. 2. When the wire W hits the lower side of the inclined surface of FIG. The area that is scraped off by the electric discharge is relatively reduced by increasing the area. Each position corresponding to the position in FIG. 2 is shown as (F → F0). In the above equation, Tu-T0 = C0tα (Va-Ya), TL + T0 = C0t
.alpha..Ya, and (Tu-T0) + (TL + T0) = Tu + T0 = C0t.alpha. (Va-Ya) + C0t.alpha.Ya. Therefore, similarly to FIG. 2, the tilt angle and the moving distance of the upper and lower wire guides can be obtained. For example, the distance between the upper and lower wire guides can be calculated.

[0012]

As described above, the wire right angle deriving and upper and lower wire guide locating jigs for wire electric discharge machining according to the present invention determine the position of the contact sensing surface simply by mechanical contact without providing a special circuit. The vertical position of the wire can be accurately detected by detecting it, and the moving distance of the upper and lower wire guides until it contacts the inclined surface is measured. It can be automatically requested.

[0013]

[Brief description of drawings]

FIG. 1 is a perspective view of a jig according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram for obtaining a distance between upper and lower wire guides.

FIG. 3 is an explanatory diagram for obtaining a distance between upper and lower wire guides.

[Explanation of symbols]

 1A, 1B Upper contact sensing surface 2, 3 Lower contact sensing surface 4, 5 Touch sensing surface 6 Inclined surface 7 Hole

Claims (2)

[Claims] 1. A detection surface that does not come into contact with a wire simultaneously is provided above and below the corners of two orthogonal surfaces, and at least one of the orthogonal surface or another surface orthogonal to the surface is provided.
A wire right angle positioning and upper and lower wire guide positioning jig in a wire electric discharge machine, characterized in that an inclined surface having a detection surface that does not come into contact with the wire at the same time is provided. 2. The wire perpendicularly extending and the upper and lower wire guide positions in the wire electric discharge machine according to claim 1, wherein the detection surface extends vertically from an outer end of the detection surface that contacts the tip of the inclined surface. Take-out jig.