JPH06218450A - Working method and device therefor - Google Patents

Abstract

PURPOSE:To eliminate deviation in the positional relation between an upper die and a lower die during the working of a material to be worked and to perform a satisfactory working without deviation of the metallic dies. CONSTITUTION:In the working method in which a metallic die 1 is abutted on a material (a) to be worked, the working is performed while the position of the metallic dies 1 is controlled in order not to generate deviation in the positional relation between the upper die 1a and the lower die 1b of the metallic dies 1 during the working. The force that is generated in the direction X vertical to the processing direction in the upper die 1a is detected, and the positional control of the upper die 1a is performed so that such force in the vertical direction X becomes a prescribed value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for processing a workpiece with a die.

[0002]

2. Description of the Related Art Conventionally, as a method for aligning an upper die and a lower die during press working, JP-A-2-99232 has been proposed.
The technique described in the publication is known. In this method, the component force between the upper mold and the lower mold is measured, and the upper mold and the lower mold are matched.

[0003]

However, in such a method, an apparatus dedicated for die matching is required, and it is impossible to detect and control the positional deviation between the upper die and the lower die during processing. There was a problem. The present invention is intended to solve such a problem, and an object of the present invention is to prevent the deviation of the positional relationship between the upper die and the lower die during processing, as well as before processing, of the mold. It is an object of the present invention to provide a processing method and a device therefor which control the position.

[0004]

A processing method of the present invention is a method for processing a die 1 by bringing it into contact with a workpiece a.
A processing method in which the position of the mold 1 is controlled so that the positional relationship between the upper mold 1a and the lower mold 1b of the mold 1 does not shift during processing. The force generated in the vertical direction X is detected, and the position of the upper mold 1a is controlled so that the force in the vertical direction X becomes a predetermined value.

Further, in the processing method of the present invention, in the method of processing by contacting the mold 1 to the workpiece a, the positional relationship between the upper mold 1a and the lower mold 1b of the mold 1 is changed during processing. This is a machining method in which the position of the die 1 is controlled so as not to cause a deviation, and the torque T generated in the upper die 1a during machining is detected so that the value of the torque T becomes a predetermined value. It is characterized in that the rotation angle of the mold 1a is controlled.

Further, in the processing apparatus of the present invention, the movable body 3 holding the upper die 1a is movably held within a certain range by a low friction holding means such as pressurized air, and the movement of the movable body 3 is controlled. An electromagnet device 7, a position sensor 5 that detects the position of the movable body 3, and a control unit that controls the current to the electromagnet device 7 based on the detection result of the position sensor 5 to control the position / force of the upper die 1a. It is characterized by having.

Further, in the processing apparatus of the present invention, the electromagnet device 7 for controlling the movement of the movable body 3 holding the upper die 1a.
And a position sensor 5 for detecting the position of the movable body 3, and a current detected by the position sensor 5 to control the electric current to the electromagnet device 7 so that the electric field is increased in all directions except rotation around the axis in the machining direction. It is characterized in that a control means for controlling the position / force of the mold 1a is provided.

Further, in the processing apparatus of the present invention, the electromagnet device 7 for controlling the movement of the movable body 3 holding the upper die 1a.
A position sensor 5 for detecting the position of the movable body 3, and a control means for controlling the current to the electromagnet device 7 based on the detection result of the position sensor 5 to control the position / force of the upper die 1a in all directions. It is characterized by having.

[0009]

[Operation] In the upper die 1a, the direction X perpendicular to the processing direction
Is detected and the position control of the upper die 1a is performed so that the force in the vertical direction X reaches a predetermined value, whereby the positional relationship between the upper die 1a and the lower die 1b during processing of the workpiece a. Good processing is performed without causing a deviation in the position of the die 1 without causing a deviation.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of claims 1, 2 and 3 are shown in FIG. That is, the entire magnetic levitation apparatus A, which will be described later, is driven in the Z-axis direction, and when bending the workpiece a, the force of the Fx component in the vertical direction X of the upper die 1a with respect to the processing direction is detected, and this Fx component is detected. The bending is performed while controlling the upper die 1a in a direction in which the force of 0 becomes 0 or a predetermined value.

The embodiments of claims 1, 2 and 4 are shown in FIG. That is, the magnetic levitation apparatus A described later is driven in the Z-axis direction to punch the workpiece a,
In the drawing process, the bending process is performed while detecting the force F in the radial direction of the upper die 1a with respect to the processing direction and controlling the upper die 1a in the direction in which the force F becomes 0 or a predetermined value.

Embodiments of claims 1, 2 and 5 are shown in FIG. That is, the magnetic levitation apparatus A described later is driven in the Z-axis direction to detect the force F in the radial direction of the upper die 1a with respect to the machining direction during bending, drawing, and punching of the workpiece a. The upper die 1a is controlled in a direction in which F becomes 0 or a predetermined value, and the machining is performed while controlling the rotation of the rotation component θz with respect to the machining axis. Such processing methods include bending, drawing,
It is possible for all punching.

FIG. 4 shows a three-axis control machining apparatus as an example of the magnetic levitation apparatus A. The movable body 3 is restrained in the plane with a low friction force by compressed air, and the vertical method shown by the arrow A and the arrow RO are shown. It is possible to control the movement in the three directions of the horizontal direction shown in (1) and the rotational direction shown by arrow (3) by the attractive force of the electromagnet device 7. That is, the movable body 3 disposed between the first electromagnets 7a, which is a pair arranged in the vertical direction, is disposed therebetween.
The held part 3a of the first electromagnet 7a is moved in the direction of being brought close to the upper electromagnet or the lower electromagnet of the first electromagnet 7a, and the movable body disposed between the second electromagnets 7b arranged in the vertical direction. 3 to move the held portion 3a of the second electromagnet 7b in the direction of approaching to the upper electromagnet or the lower electromagnet of the second electromagnet 7b, thereby controlling the movement of the movable body 3 in the vertical direction indicated by the arrow a and in the rotation direction indicated by the arrow c. It is possible to do. Then, the pair of third electromagnets 7c arranged in the horizontal direction moves the held portion 3a of the movable body 3 disposed between them in a direction of approaching the left electromagnet or the right electromagnet of the third electromagnet 7c. Therefore, the movable body 3 can be moved in the horizontal direction indicated by the arrow B.

The control means includes the first to third electromagnets 7a in the electromagnet device 7 having three pairs of electromagnets.
Since it is necessary to perform the feedback control calculation in consideration of the interaction of the attraction forces of 7b and 7c, the microcomputer 6 configured to process the matrix calculation at high speed is used. First position sensor 8a and second position sensor 8 for detecting the position of the
A position sensor 8b, and three position sensors 8a of a position sensor 8c for detecting the horizontal position of the movable body 3,
The position detection results from 8b and 8c are the interface 10
The control output that is input to and output from the microcomputer 6 via the
Via the electromagnet device 7 via the electromagnets 7a, 7b, 7c
The current to the coil is controlled. Electromagnet 7a
Since the force of .. is proportional to the square of (current value / gap), a large force is output in the small gap range. Then, holding a tool such as an upper die 1a such as a punch, the workpiece a
A configuration for controlling the support portion of the tool for is known, for example, in the compliance mechanism in Japanese Patent Publication No. 63-207530.

The bending apparatus described above with reference to FIG. 4 can accurately perform the bending process. FIG. 5 shows all directions other than Z-axis rotation θz in three dimensions.
That is, it is a processing device capable of controlling 5 degrees of freedom (X, Y, Z, θx, θy). In such a processing apparatus, the upper die 1a has a cylindrical shape in the drawing process and the punching process, and the processes can be accurately performed only when the rotational component is not required.

FIG. 6 shows all directions in three dimensions, that is, 6
When a device that can control the degrees of freedom (X, Y, Z, θx, θy, θz) or a device that controls 5 degrees of freedom excluding the rotation θz of the Z axis is used, it is possible to measure in that direction on a certain surface. Become. In such processing equipment, drawing and punching,
Bending can be performed accurately.

[0017]

As described above, according to the present invention, the force generated in the upper die in the direction perpendicular to the machining direction is detected and the position of the upper die is controlled so that the force in the vertical direction becomes a predetermined value. In addition, there is an advantage that the positional relationship between the upper die and the lower die does not shift during the processing of the workpiece, and good processing can be performed without the position of the die shifting.

[Brief description of drawings]

FIG. 1 shows a bending method of the present invention, (a) is a flowchart, and (b) is an operation explanatory view.

FIG. 2 shows the punching and drawing methods of the above,
(A) is a flowchart, (b) is operation | movement explanatory drawing of punching, (c) is operation | movement explanatory drawing of drawing processing.

FIG. 3 shows a bending method with 6 degrees of freedom in the same as above, (a)
Is a flowchart, and (b) and (c) are operation explanatory diagrams.

FIG. 4 shows the above processing apparatus, (a) is a front sectional view,
(B) is a side sectional view, (c) is a plane sectional view, and (d) is a block circuit diagram of the control means.

FIG. 5 is a schematic view of a processing device with the same 5 degrees of freedom as the above.

FIG. 6 is a schematic view of a processing device with 6 degrees of freedom in the above.

[Explanation of symbols]

 1 Mold 1a Upper mold 1b Lower mold 3 Movable body 4 Electromagnet 5 Position sensor 6 Microcomputer 7 Electromagnet device a Workpiece

Claims (5)

[Claims] 1. A method of processing a mold by bringing the mold into contact with a workpiece, the position of the mold is controlled so that the positional relationship between the upper mold and the lower mold of the mold does not shift during processing. The machining method is performed while detecting the force generated in the upper die in a direction perpendicular to the machining direction, and performing position control of the upper die so that the force in the vertical direction becomes a predetermined value. Processing method. 2. A method of processing by contacting a mold with a workpiece, wherein the position of the mold is controlled so that the positional relationship between the upper mold and the lower mold of the mold does not shift during processing. A machining method which is performed while detecting the torque generated in the upper mold during machining and controlling the rotation angle of the upper mold so that the value of the torque becomes a predetermined value. 3. An apparatus for carrying out the method according to claim 1 or 2, wherein the movable body holding the upper die is movably held within a certain range by a low friction holding means such as pressurized air, An electromagnet device that controls the movement of the movable body, a position sensor that detects the position of the movable body, and a control unit that controls the current to the electromagnet device based on the detection result of the position sensor to control the position and force of the upper die. Processing equipment equipped with. 4. An apparatus for carrying out the method according to claim 1, wherein an electromagnet device for controlling movement of a movable body holding an upper die, a position sensor for detecting a position of the movable body, and a position A processing device equipped with a control means that controls the current to the electromagnet device based on the detection result of the sensor and controls the position and force of the upper die in all directions other than the rotation around the axis in the processing direction. 5. An apparatus for carrying out the method according to claim 1 or 2, wherein an electromagnet device for controlling movement of a movable body holding an upper die, a position sensor for detecting a position of the movable body, and a position A processing device equipped with a control means that controls the current to the electromagnet device based on the detection result of the sensor to control the position and force of the upper die in all directions.