JPH02284847A - Turret turn control system and device thereof in numerically controlled lathe - Google Patents

Abstract

PURPOSE:To improve safety at the time of performing a turret turn by comparing a turret number, in which a tool causing the interferene is mounted, with an interference matter area data while automatically deciding a turn direction causing no interference, and performing a control of the turret turn. CONSTITUTION:A keyboard or the like sets 1 to a storage place corresponding to a turret number, in which a special tool of a special tool memory 1 is mounted, and 0 to a storage place corresponding to a turret number in which a tool except the special tool is mounted. while the keyboard or the like sets 1 to a storage place corresponding to a turret number of an area, where interfer ence matter of an interference matter area memory 2 is present, and 0 to an area where no interference matter is present. Then a turret turn direction auto matic decision circuit 3, when it inputs a turret turn command, reads contents of the special tool memory 1 and the interference matter area memory 2, auto matically deciding to output a turn direction avoiding the interference, and a turret turn control circuit 4, inputting the automatically decided output, performs a turn control being based on a decision result of the circuit 3.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention performs control so that when the turret rotates, a tool attached to the turret does not interfere with the lathe body or the workpiece. The present invention relates to a turret rotation control method and device for an NG (numerical control) lathe.

(Prior art) Turret rotation control in numerically controlled lathes is generally
Control is performed by taking a short detour or by specifying the turning direction, and in either case, it can be controlled in both left and right directions. At this time, when the turret rotates with the tool attached to the turret tool post, if the tool interferes with the lathe body or the workpiece, conventionally the programmer takes steps to avoid interference. The turret rotation direction was specified on the Nitrogram.

(Problem to be Solved by the Invention) However, according to the conventional turret rotation control method and device for numerically controlled lathes as described above, it is difficult to create a cannibal program, and even in one place there is an error in the creation. Otherwise, there was a risk that the tool would collide with the lathe body or the workpiece, which could lead to a serious accident.

The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide a turret rotation control method for a numerically controlled lathe that can improve safety during turret rotation and reduce the burden on the programmer. and to provide its equipment.

(Means for Solving the Problems) The present invention provides numerical control for controlling so that when the turret rotates, a tool attached to the turret does not interfere with the lathe body or the workpiece. The present invention relates to a turret rotation control method and device for a lathe, and the above object of the present invention is to prevent the attachment of a tool from interfering with the lathe body or a workpiece when the turret on which a tool is attached in a numerically controlled lathe turns. The turret number that is currently being used and interfering object area data representing the position of the lathe body or workpiece relative to the turret number are set and stored in advance, and upon receiving a turret rotation command, the tool that causes the interference is determined. This is achieved by comparing the number of the turret to be attached with the interfering object area data, automatically determining a turning direction that does not cause the interference, and controlling the turning of the turret. Also, the numerical value rr
A special tool information storage means for storing a turret number on which a tool is attached that causes interference with the lathe body or a workpiece when the turret on which the tool is attached in the IJ lathe rotates; Interfering object area storage means that stores interfering object area data representing the position of the main body or workpiece, and upon receiving a turret rotation command, the turret number on which the tool causing the interference is attached and the interfering object. This is achieved by comprising a control means for automatically determining a turning direction that does not cause the interference and controlling the turning of the turret by comparing the turning direction with the fA area data.

(Function) In the present invention, the turret number on which the tool that interferes with the lathe body or the workpiece is installed when the turret rotates, and the interfering object area data representing the position of the interfering object are set and stored in advance. Interference can be avoided reliably and easily by automatically determining a turning direction that does not cause interference while comparing these data and controlling the turning of the turret.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram of a turret rotation control device in a numerically controlled lathe according to the present invention. Moreover, FIG. 2 is a diagram showing an example of a case where a special tool interferes with the lathe main body, for explaining the present invention.

First, in FIG. 2, a square turret 1 is placed on the saddle 12.
1 is arranged, and a duct 13 containing a control line connected to the inside of the square l/foot 1 is connected to the saddle 12.
and is attached to the square turret 11. Also, the square turret 11 has a tool 14. +5.1F+, 17 are installed, among which tools 15, 15.17 do not interfere when the square turret 11 turns, but tool 14 has a large protrusion, so it is a special tool that interferes with the duct 13 when turning. It's a tool.

Next, the present invention shown in FIG. 1 will be described in detail using the above-mentioned apparatus as a specific example. First, in the special tool memory 1, ° "1" is set in the storage location corresponding to the turret number where the special tool is installed, and "1" is set in the storage location corresponding to the turret number where a non-special tool is installed.
``0'' is set using a keyboard or the like (not shown). In the specific example, the turret number ■ is set to °“1”. In addition, in the interfering object area memory 2, °°1°'' is set in the storage location corresponding to the turret number, which is the area where the interfering object exists, and °O'' is set in the area where the interfering object does not exist using the keyboard, etc. In the specific example, since there is an interfering object between turret number ■ and turret number ■, °''1'' is set for turret numbers ■ to ■.Therefore, the automatic turret rotation direction determination circuit 3, when the turret rotation command is given manually, the special tool memory 1
The turret rotation control circuit 4 reads the contents of the interfering object area memory 2, automatically determines and outputs the rotation direction to avoid interference, and manually inputs the determination result to perform rotation control based on the determination result.

FIG. 3 is a diagram showing a control operation procedure based on the present invention.

First, when a turret rotation command is input (step St
), it is determined whether or not 1'' is set in the special tool memory 1 (step S2), and if it is set, then it is determined whether or not "l" is set in the interference object area memory 2. (Step S3). If "1" is set in the interference area memory 2, the clockwise rotation is performed based on the turret rotation command, the current turret position, the information in the special tool memory 1 and the interference area memory 2. It is determined whether interference will occur if the rotation is made (step S4).

If it is determined in step S4 that no interference will occur, a right turning direction is designated (step S5).

On the other hand, if it is determined that interference will occur, whether or not interference will occur when turning left is determined based on the turret rotation command, current turret position, special tool memory 1, and interference area memory 2 information. (Step S6).

If it is determined in step S6 that no interference will occur, the left turning direction is designated (step S7). In addition, in steps S2 and S3, "1" is set in either the special tool memory 1 or the interfering object area memory 2. If not set, the turning direction is not specified (step S8).

Step S5. Once the turning directions are determined in step S7 and step S8, the turret turning control is executed based on the turning directions (step s9), and upon completion, the next command is given.

On the other hand, if it is determined in step S6 that interference will occur during a left turn, the command is deemed impossible to execute and the operation is interrupted (step 510). Wait for the command to be canceled (step 5ll) and wait for the next command.

As a modification of the above embodiment, it is also possible to store two-dimensional data indicating areas in the special tool memory 1 and interfering object area memory 2, and to make the determination based on the overlap of the areas.

(Effects of the Invention) As described above, according to the turret rotation control method and its device in a numerically controlled lathe of the present invention, the tool that causes interference is determined by the turret number on which the tool that causes interference is installed and the interfering object area data. Since the turning control is performed by automatically determining the turning direction that does not cause the turret to occur, safety during turning of the turret can be improved and the burden on the programmer can be reduced.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a turret rotation control device in a numerically controlled lathe of the present invention, Fig. 2 is a diagram illustrating an example of the case where a special tool and the lathe itself interfere with each other to explain the present invention, and Fig. 3 is a block diagram of a turret rotation control device in a numerically controlled lathe of the present invention. FIG. 3 is a diagram showing a control operation procedure based on the present invention. 1... Special tool memory, 2... Interfering object area memory,
3... Turret rotation direction automatic determination circuit, 4... Turret rotation control circuit. Tea diagram

Claims (1)

[Claims] 1. The number of the turret on which the tool is attached that causes interference with the lathe body or the workpiece when the turret on which the tool is attached in a numerically controlled lathe turns, and the lathe body with respect to the turret number. Alternatively, interfering object area data representing the position of the workpiece is set and stored in advance, and upon receiving a turret rotation command, the turret number on which the tool causing the interference is installed and the interfering object area data are stored. A turret rotation control method for a numerically controlled lathe, characterized in that the rotation direction of the turret is controlled by automatically determining a rotation direction that does not cause the interference by comparing the above. 2. A special tool information storage means that stores the turret number on which a tool is attached that causes interference with the lathe body or workpiece when the turret on which the tool is attached in a numerically controlled lathe rotates, and Interfering object area storage means storing interfering object area data representing the position of the lathe main body or the workpiece; and upon receiving a turret rotation command, storing the turret number and the number of the turret to which the tool causing the interference is attached. turret turning in a numerically controlled lathe, characterized in that it is configured to include a control means for automatically determining a turning direction that does not cause the interference and controlling the turning of the turret by comparing data with interfering object area data. Control device.