JPH01127255A - Supervisory device for machining part - Google Patents

Abstract

PURPOSE:To prevent an accident before occurrence safely supervising a machining part by mounting a camera being able to adjust its position to a spindle head or to a part following a movement of the spindle head and enabling an NC image and a machining image to be divisionally displayed in a CRT image plane. CONSTITUTION:A waterproof cover 13 with a built-in industrial small camera is mounted being able to adjust a position of camera angle to the point end of a spindle head 3 through a mounting metal fixture, being constituted so as to display an image in an image plane of a CRT8 in an NC unit, and an NC image and a machining image can be divisionally displayed. As the result, a machining part can be safely supervised by enabling the vision of difficulty due to overlapping both the images to be avoided. Accordingly, early discovering unexpected abnormality during cutting with a less hazard by an error control of tool length correction, original point correction, etc., an accident can be prevented before occurrence.

Description

[Detailed Description of the Invention] Industrial Application Field This invention is an application for installing a small camera on the spindle head of a machine tool.
The present invention relates to a monitoring device that displays a processed portion on a CRT screen of a C device.

Conventional technology Monitoring of the machining area during cutting was usually done from outside the splash guard because chips, cutting fluid, etc., were often scattered and dangerous. In addition, when displaying images of the processing section on a separate CRT screen at exhibitions, etc., a television camera was installed in a fixed area. Furthermore, Japanese Patent Laid-Open No. 120944/1984 discloses a method in which the workpiece machining state of an NC machine tool is visualized using a TV camera, and the image is superimposed with NC information and displayed on a video display device.

Problems to be solved by the invention Monitoring of the machined part during cutting is very important to prevent damage due to machining errors and collisions, but there is a point of view that is difficult to see from outside the splash guard. ing.

Furthermore, the method of JP-A No. 62-120944 has the problem that the image of the workpiece machining state and the NC information are displayed superimposed, making it difficult to see, and since it does not have a VTR device, it is not possible to record. There was a problem.

In addition, when displaying the machining part on both sides of a CRT, if the camera is installed on a fixed part, the machining part will move with the spindle head, making it impossible to maintain an appropriate camera angle, and a separate CRT requires a large installation space for regular use. Furthermore, there was a problem in that the cost was high.

Means for solving the problem A camera 12 is installed in a position adjustable manner on the spindle head 3 of the NC machine tool or on a part that follows the movement of the spindle head, and the image of the camera 12 and the information of the NG device are displayed separately. CRT
8.

Examples Examples of the present invention are shown in Figs. 1 to 31! The explanation will be based on 1. In a known horizontal machining center, a column 2 having a sliding guide surface in the Y-axis direction is installed on the right side of a bed 1, and a spindle head 3 is provided on the column 2 so as to be movable and positionable. A main spindle 4 is rotatably supported on the main spindle head 3 by a plurality of bearings, and a tool T is attached to the tip of the main spindle 4.

A saddle 5 is movably positioned on a sliding guide surface in the Z-axis direction cut on the left side of the bed 1, and a barre 7 is placed on the sliding guide surface in the X-axis direction cut on the saddle 5. ) A table 6 is provided so that it can be moved and positioned and rotated and indexed in a horizontal plane. Furthermore, an NG device and an E
An NC control box 7 containing a built-in C device is installed, and a display CRT is mounted on the left side of the NC control box 7 so as to be able to rotate around a vertical support shaft.
8, an NC control box 7 is provided with terminals 7a and 7b, and a VTR 10 installed nearby.
and an external keyboard 22 for inputting characters.

A waterproof cover 13 containing a small industrial camera 12 is attached to the tip of the support shaft 3 via a mounting bracket 11 so that the camera angle can be adjusted.

A position near the front end of the camera 12 is fixed to a partition plate 14 fixed at a position close to the front end inside the waterproof cover 13 , and a camera cable 15 is inserted through the rear end surface 13 a of the waterproof cover 13 and connected to the camera 12 . The portion outside the waterproof cover is covered with a protective blade 16. Furthermore, an air vibrator 17 is installed inside the waterproof cover 13 in parallel with the camera 12. The tip of the air vibrator 17 is attached to the partition plate 14 and opens toward the front chamber of the waterproof cover 13, and the rear end is connected to the waterproof cover 13. It is connected to an air pipe 19 connected to an air source (not shown) via a joint 18 provided on the rear end surface 13a. Furthermore, waterproof cover 1
The large diameter side of a tapered front plate 20 is fixed to the tip of 3.
The tip of the camera 12 is fitted into the hole 20a on the small diameter side of the front plate 20 with a slight gap, and gold 1421 with a mesh slightly smaller than the lens diameter is provided on the front of the camera 12, and it blows out from the small gap. The lens portion of the camera 12 is protected from cutting fluid and chips by the air blower and wire mesh 21.

Note that it is of course possible to adjust the position of the camera angle of the waterproof cover 13 by remote control.

Operation: A workpiece is fixed to a pallet mounted on a pallet table 6 of a machining center, and cutting is performed using a tool T mounted on a main spindle. Spindle head 3
Camera 12 built into waterproof cover 13 attached to
The air flowing out from the tip of the air vibrator 17 is connected to the front plate 20.
The CR installed in the IM9 blows away scattered chips and cutting fluid from the gap between the camera 12 and the camera 12, and provides a clear image that is not interfered with by the chips or cutting fluid.
Display on 78 screens.

The display method on the CR78 screen is a switching screen display method in which a changeover switch (not shown) provided on the operation panel 9 is used to switch between the original NC operation display and the machining section monitoring display, or as shown in Figure 4. Split the CR7 screen into NC
A split screen display method or the like is selected in which a part of the screen is displayed for monitoring the machining section at the same time as the program is displayed, and machining progresses while monitoring the constantly changing machining status displayed using either method.

In addition, by connecting the VTR 10, it is possible to record the above-mentioned images, and at the same time record other screens that are not displayed on the CRT screen, such as the load values of each axis, by using a switch (not shown), and also record numerical data from devices outside the machine. For example, character input from the external keyboard 22 can also be recorded together with the processed video.

Of course, processing can be performed without displaying the CRT display by turning off the changeover switch.

Effects As detailed above, the present invention is capable of attaching a camera to the spindle head or a part connected to the movement of the spindle head so that its position can be adjusted, and displaying the image on the CRT screen of the NC device so as to display the NC image and the processed image. Since it can be displayed separately, it is possible to avoid the difficulty of viewing due to the overlapping of both images, and the machining area can be monitored safely. There is less danger from erroneous operations such as tool length correction and origin correction. It has the effect of early detecting unexpected abnormalities during cutting and preventing accidents, and the simultaneous display of the NC program, current position, trajectory, etc. makes it easy to understand the machining status, and it also makes it easier to understand the machining status.
R by IN (simulation silane of a machining, confirmation when repeating work with a small frequency.

Machine status monitoring by simultaneous recording of load status data.

This has the effect of preserving materials for consideration when investigating problems, etc. by recording alarms.

[Brief explanation of the drawing]

Fig. 1 is a front view of a horizontal machining center with a monitoring device according to the present invention, Fig. 2 is a perspective view of the camera unit attached to the spindle head, Fig. 3 is a cutaway view of the waterproof cover containing the camera, and Fig. 4
The figure is an explanatory diagram of the effect of displaying a split screen. 3. Main axis! J[8...CRT IO...VTR12...Camera 22...Keyboard box 4 Figure

Claims (3)

[Claims] (1) A camera that is installed in an adjustable position on the spindle head of an NC machine tool or a part that follows the movement of the spindle head, and a CRT that displays images from the camera and information in the NC device in one screen. A processing unit monitoring device comprising: (2) A camera mounted in an adjustable position on the spindle head of the NC machine tool or a part that follows the movement of the spindle head, and a CRT that displays the image of the camera and the information in the NC device dividedly on one screen; A monitoring device for a processing section, comprising a VTR connected to the NC device and recording images on the CRT. (3) A camera installed in a position adjustable manner on the spindle head of the NC machine tool or a part that follows the movement of the spindle head;
A monitoring device for a processing section comprising an external input keyboard connected to a C device, and a CRT that displays not only images from the camera and information in the NC device, but also external information from the keyboard.