JPH02109639A - Cutting method - Google Patents

Abstract

PURPOSE:To ensure an unmanned continuous work by cutting so that the body to be cut off is unable to separate in the separating direction and finishing a sampling hole in the desired specification in the reverse direction. CONSTITUTION:A wire electrode is worked by inclining A deg. so as to become wider in the upper direction. After completion of the working, generated residue 7 is held by the body 6 to be worked. The residue 7 is sticked to the adsorber 8 fixed to a robot arm 9 and removed. Also, a shape 17 is of straight working not inclining the wire electrode and first a 1st working is executed by inclining the wire electrode by A deg. so that only opposed two sides of this angular shape are widen to the upper side like a working shape 15. A 2nd working is executed by being divided in several times on the correction work area 16 provided with a shaded portion so as to cause no residue, finishing is made in an instructed shape 17 and the working as for a product is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a cutting method for a wire-cut electric discharge machining device, a laser machining device, a numerical control device, and the like.

[Conventional technology]

FIG. 3 is a diagram showing the machining shape of a workpiece, for example.
1) to (5) are the respective processed shapes. An example is shown in which a hole is drilled in the center of each processed shape and a square hole is formed using this hole as a starting point.

In FIG. 4, a conventional device such as a robot was used. (6) is a diagram showing an example of removing debris, (6) is a workpiece, (
7) The scrap is removed, (8) is the adsorption device such as an electromagnet attached to the robot arm, (9) is the rotatable robot arm, +1 (I is the axis that can be moved in the vertical direction, and a force is the lower processing fluid. The supply nozzle, a is a holder that supports the lower machining fluid supply nozzle, (11 is an insulating plate that fixes the holder, a)
m is the lower arm of the wire electrical discharge machining device.

Next, the operation will be explained.

As shown in Figure 3, from one workpiece (1) to (5)
) are processed continuously. First, the machining shape (1) is machined, and after the machining is completed, the cut-off scraps are automatically removed. Then, first process the processed shape (2),
After the machining is completed, the scraps that have fallen off the cut are automatically removed, and the machining shapes (3) to (5) perform the same operation in this way.
Perform unmanned continuous processing.

In addition, the method for removing the cutting scraps (7) is as shown in section 4. After the machining of the workpiece (6) is completed, the cutting scraps (7) that have been cut off are placed at the tip of the lower arm α4. It is supported so as not to fall into the processing tank by the lower nozzle αυ fixed to the support 02 on the attached insulating plate 0. The waste (7) is automatically removed by a suction device (8) attached to the tip of the arm (9).

However, in the shape of the workpiece (6) shown in FIG.

The scrap (7) cannot be supported by the lower nozzle αυ.

It cannot be automatically removed by the suction device (8).

[Problem to be solved by the invention] Since the conventional cutting method is as described above, depending on the machining shape, workpiece shape, and method of using jigs and tools,
There was a problem in that the scraps fell or tilted during punching after the machining was completed, and the scraps could not be automatically removed by a device such as a robot, making unattended continuous machining impossible.

This invention was made to solve the above-mentioned problems, and it is possible to prevent scraps from falling off or tilting the cut during cutting.

The purpose of this invention is to obtain a cutting method that can reliably perform unmanned continuous machining by using a function that automatically removes scraps using a device such as a robot.

[Means to solve the problem]

The cutting method according to the present invention includes the following steps.

(a) Cutting is performed so that the cross section of the hole in the direction perpendicular to the direction in which the object to be cut out is intended to leave has a different area at any given position, so that the object to be cut out cannot escape in the direction in which it is intended to leave. Process.

(1)) A process of pulling out the cut object in a direction opposite to the direction in which the cut object is about to be released.

(e) Process of finishing the hole to desired specifications.

[Effect]

The cutting method of the present invention prevents the object to be cut from falling or tilting by reducing the cross-sectional area of the hole in the direction in which the object to be cut is about to fall. The cross-sectional area of the hole increases in the direction opposite to the direction in which the cut object is about to fall, making it easier to pull out the cut object.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 1, (6) is the workpiece, and (7) is the scrap.

(8) is a suction device attached to the robot arm, (9) is a rotatable robot arm, α port is a vertically movable shaft, aυ is a lower machining fluid supply nozzle, (13 is a lower part)
(b) A receiver that supports the engineering fluid supply nozzle, ri3 is an insulating plate that supports the receiver, α4 is the lower arm of the wire electrical discharge machining device, and (A″) is the angle at which the wire electrode is tilted.

In Fig. 2, a is the shape processed by tilting the wire electrode A' (primary processing), 0e is the area to be corrected after the primary processing, diagonally lined, and (lη is the processed shape in the drawing). It is the shape.

As shown in FIG. 1, the wire electrode is processed with an X tilt so that it becomes wider in the upward direction. After processing is completed, the resulting punching scraps (
7) is held by the workpiece (6). Then, the scraps (
7) is absorbed and removed.

However, not all machining involves machining by tilting the wire electrode, so machining is performed through the steps of primary machining, in which the wire electrode is tilted, and then secondary machining, in which the shape is corrected to the specified shape. The process will be explained.

As shown in the wJz diagram, the specified shape (Lη is a straight machining in which the wire electrode is not tilted.First, the first machining is performed by machining only two opposite sides of this square shape, as in the machining shape al. Process the A゛ wire electrode inclination so that it becomes wider on the upper side.Next, the secondary processing is performed in the modified processing area with diagonal lines.
is processed in several batches to avoid producing scraps, and finished to the specified shape of 0η, completing the processing as a product.

Although the above embodiment has been explained in the case of a wire electrical discharge machining device, it can also be applied to cases where cutting is performed by punching in laser processing devices, numerical control devices, and other processing devices, and the same method can be applied. be effective.

Further, the workpiece may be an object other than metal.

It can be stone, plastic, wood, etc.

In addition, although an example of a suction device using an electromagnet has been given as a means for removing cut chips, other means such as a suction cup, adhesive, suction force, etc. may be used to remove υ.

〔Effect of the invention〕

According to this invention, the removal prevents dropping and tilting of scraps, and o
This has the effect of ensuring that the scraps are automatically removed using a device such as a bot.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the removal of scraps according to an embodiment of the present invention, Fig. 2 is a view showing this machining method, Fig. 3 is a view showing the workpiece to be cut, and Fig. 4 is a sectional view showing the removal of scraps. FIG. 5 is a diagram illustrating the removal of dregs using the conventional method. FIG. (6) is the workpiece, (7) is the scrap, and (8) is the suction device. (9) is the robot arm, αQ is the axis, I is the nozzle, a is the holder, α field is the insulating plate, and α◆ is the lower arm. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] When a hole is formed in an object by cutting out, the cutting method involves detaching the object to be cut out, the cutting method comprising the following steps: (a) detachment of the object to be cut out; A process of cutting in such a way that the cross section of the hole in the direction perpendicular to the direction in which the object is to be removed has a different area at an arbitrary position, so that the object to be cut out cannot be removed in the direction in which the object is to be removed; (c) A process of finishing the hole to desired specifications.