JPS6180408A - Numerical control cutting method - Google Patents

Abstract

PURPOSE:To attain the NC (numerical control) cutting with an optional material by obtaining the drive amounts of a cutter and an image pickup device from the drive of the cutter in the rail direction and the synthetic speed of the image pickup device, defining the form of a contour through the graphic processing and arranging parts to obtain the cutting information. CONSTITUTION:A detector 16 is operated by a manual operating board 24. Thus the shift amounts of servo drivers 18 and 19 are obtained from a pulse generator 21 and an encoder 22 as the digital amounts respectively. These digital amounts are supplied to a processor 26 and therefore defined as the spot coordinates. When the contour of a material 14 to be cut is followed up, the signals are sent to both drivers 18 and 19 from the board 24 for drive of both drivers. Then the detector 16 projects edge line of the material 14 on a picture tube 25, and the position shift of the detector 16 is corrected momentarily by the board 24. Computer systems 26-29 define the form of the contour of the material 14 and convert it into the numerical control data in consideration of the arrangement of parts. The obtained data are supplied to a numerical controller 30, and drivers 19 and 20 are operated to move a cutter main body and torch. Thus a prescribed cutting action is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for cutting parts from irregularly shaped materials such as scrap materials by numerical cutting.

<Prior art> Conventionally, when cutting irregularly shaped materials such as scraps, the cutting method is carried out by copying a photoelectric tube, or by marking a cutting line on the material in advance and manually copying it. lJi, and cutting was not performed by numerical control.

<Problems to be solved by the invention> As mentioned above (in the past, cutting was not done by numerical control; In reality, it is necessary to measure the shape of the material, match the coordinate axes of the NC cutting hole made with x-y coordinates with the position of the material, and place the part on the irregularly shaped material. It is impracticable and the 7 (and therefore NC9) cutter has never been employed for this type of purpose.

In view of the above points, the present invention provides a method in which the shape of the irregularly shaped material is easily expressed as numerical data, the parts are arranged in a load movement by graphic processing by a combination machine, and the parts are cut (replaced with tH). This is what we provide.

<Means for Solving the Problems> A name explaining one means according to the present invention for solving the above problems with reference to the drawings. No. 1121 is a plan view of an apparatus for implementing the method according to the present invention, in which l is a material to be cut having an arbitrary shape such as scrap material whose shape cannot be defined in advance, and a material to be cut is placed on the cutting surface plate 2. placed in appropriate condition.

3~1O is N by conventionally used gas cutting etc.
An example of a C19 cutting machine is shown, in which 3 is a rail forming one axis of orthogonal coordinates, 4 is a cutting torch, and 5 is a holder for setting and fixing the interval of the cutting torch 4, which is arranged on a cross beam 6. Further, 7 is a cross rail which serves as a reference for the other axis of the orthogonal coordinate system and is fixed to the cross frame 8 of the main body.

9.9' is a device for driving and tightening the cross beam 6 along the cross rail 7, and one side thereof is equipped with an NCC servomorph and a feedper device. Reference numeral 10 denotes a traveling saddle that fixes the cross frame 8, drives along the rail 3, and is equipped with an NG servo motor and feedback equipment.

Next, 11 to 13 are devices specially provided for the present invention to follow the shape of the material to be cut and output numerical data; 11 is another cross rail arranged parallel to the cross rail 6;
Reference numeral 12 denotes a detection device consisting of a television picture tube that picks up the edge of the official-shaped material, and is mounted on a detection boulder 13, which can be driven from a distance by an electric motor and detects the amount of movement. It is equipped with a pulse generator and an encoder.

Functions Next, the functions when operating the apparatus having the above configuration will be explained. Here, in Fig. 2, numeral 4 indicates the workpiece to be cut in the official shape, 15 indicates a fusing machine controlled by a number (1'#J), 16 indicates a contour detector constituted by an imager, and the rail of the cutter is It is mounted on a carry 17 that is driven in the X-axis direction perpendicular to the (X-axis). 18, 19 and 20 are servo drivers including the detector and the servo motors for the y-axis and the X-axis of the cutting machine, respectively. , and 21.22 is the imager and
This is a device that detects the amount of movement as a digital amount using a pulse generator or encoder attached to a shaft-driven driver.

First, a method for recognizing the outline of the machine to be cut 14 will be explained. When the detector 16 is first operated using the manual operation panel 24, the amount of movement of the driver 18.19 is detected as a digital star from the pulse generator or encoder 21.22. If this occurs and is input to the processing device 26, it will be defined as point coordinates. Generally, the outline of the material to be cut 14 does not directly form part of the product, so it is sufficient to have a rough idea of it (it is sufficient to drive the machine at the same speed and input point coordinates intermittently.

? , 1 When following the contour of the workpiece, the operator 23
A signal is sent from the manual operation panel 24 to the servo drivers 18 and 19 to drive them, and at the same time, the edge line of the workpiece 14 is projected onto the picture tube 25 by the detector 16. It will be revised from time to time.

Next, 26 to 29 are computer systems that define the shape of the contour of the object to be cut, consider the arrangement of parts, and convert it into numerical control data; 26 is a processing device; and 27 is a graphics system.

28 is a memory, and 29 is an input operation panel. The purpose of the external memory 28 is to store the shape of parts, etc. and to immediately pull out the necessary parts, and the input operation port 29 is used to input the material to be cut, the parts and the material to be cut, This is the part that operates the creation.

To perform cutting, an NC tape is created by the processing device 26, or a signal is directly input to the numerical control controller 30, and the servo drivers 19 and 20 are operated to drive the cutter body and torch to make the desired cut. Have them do it.

<Effects of the Invention> Conventionally, it was impossible to create \C information when placing a material to be cut of an arbitrary shape at an arbitrary position and cutting it by numerical control, but with the method of the present invention; By adding a digitizer function to the machine, it is possible to simply know the outline and position coordinates of the workpiece using an NC cutting machine.
Materials with complex shapes, which were previously considered impossible, can be cut using numerical control, making it easier to reuse materials that previously relied on manual labor, such as scrubbing and cleaning.
There are six.

4. [fiiT 'i' explanation of drawings] Figures 1 and 2
FIG. 1 is an explanatory diagram for carrying out the method of the present invention.

1.14 is the material to be cut, 2 is the cutting surface plate, 3.7.11 is the rail, 4 is the torch, 5 and 13 are the holders, 9 is the drive device, 12 is the detection device, 16 is the contour detector, 18° 19.2
0 is a servo driver, 21.22 is a detection device, 24 is a manual operation panel, 25 is a picture tube, 26 is a processing device, 27 is a display device, 28 is a memory, 2 is an input panel, 30
Ha: 17 ``There is an I-ray ζ.

Claims (1)

[Claims] A cross rail is installed in the direction perpendicular to the rail of the cutting machine,
An image pickup device driving on the rail detects the edge of the material to be cut of any shape and displays it on a picture tube, and manually follows it by the combined movement of the cutting machine's drive in the rail direction and the image pickup device, and calculates the amount of each drive. An NC cutting method in which the outline of the material to be cut is defined by extracting it as a digital signal, performing graphic processing, arranging the parts, and outputting the NC cutting information.