JPH04318604A - Numerical controller - Google Patents

Abstract

PURPOSE:To facilitate the preparation of the machining program by setting a moving route evading an interference area when the actual moving route of the object to be controlled interferes with the interference area. CONSTITUTION:The data on the interference at a caused by the mechanical elements such as work, tool, etc., and the machining conditions, etc., is inputted from a keyboard 2 to an interference area setting means 5 and the interference area is set. A machining program analysis means 3 reads the machining program 1 from a paper tape, analyzes it, outputs moving command data and inputs this moving command data to an interference area comparison processing means 4. Then, the interference area comparison processing means 4 compares the moving command data with the preliminarily set interference area data and judges whether the moving route interferes with the interference area or not. When they interferes with each other, an interference area evasion processing means 6 sets a new moving route for evading the interference area and outputs it to a moving processing means 7. The object to be controlled is made to move by the moving processing means 7.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control device that moves a controlled object such as a tool and performs machining operations based on a machining program.

0002

2. Description of the Related Art FIG. 4 is a block diagram showing a conventional numerical control device. In the figure, 1 is a paper tape that stores a machining program, 3 is a machining program analysis means that reads the machining program stored on the paper tape 1 and analyzes the read commands, and 7 is a paper tape that stores a machining program. Movement data processing means 9 and 10 for calculating movement data are motors driven based on this movement data to directly move a controlled object such as a tool.

Next, the operation will be explained. paper tape 1
One block of commands of the machining program stored in is read by the analysis means 3 and analyzed. Based on this analysis result, movement data of a controlled object such as a tool is calculated and output to the motors 9 and 10, which are driven to perform machining operations based on the machining program. After completing the machining operation for one block, the movement data processing means 7 requests the analysis means 3 to read out instructions for the next block of the machining program from the paper tape 1. By the way, in such a machining program, for example, if a tool, which is a controlled object, is moved linearly over the shortest distance from the movement start point 21 to the movement end point 22, as shown by the broken line in FIG. For example, if there is a case where there is interference with the workpiece, create a movement path from the movement start point 21 to the first intermediate point 28, second intermediate point 29, and then movement end point 22 to avoid interference in the machining program. It must be programmed in advance.

0004

[Problem to be Solved by the Invention] When programming a machining program in the conventional numerical control device as described above, it is necessary to perform calculations in advance to prevent interference between the workpiece and the tool or between the tools. First, there was a problem in that programming became complicated.

[0005] The present invention has been made to solve these problems, and it is an object of the present invention to provide a numerical control device that facilitates the creation of machining programs.

[0006]

[Means for Solving the Problems] A numerical control device according to the present invention includes an interference region setting means for setting an interference region that interferes with a movement path based on a processing program of a controlled object by inputting from the outside in advance; Interference area comparison processing means for checking whether or not there is interference between an actual movement path based on a machining program and the interference area, and a new movement path that avoids the interference area when the movement path and the interference area interfere. and interference area avoidance processing means for setting.

[0007]

[Operation] The numerical control device configured as described above is capable of adjusting the interference area when the actual movement path of the controlled object based on the machining program interferes with the interference area input in advance. Automatically set an avoidable travel route.

[0008]

【Example】

Example 1. FIG. 1 is a block diagram showing an embodiment of the present invention, in which 1 is a paper tape storing a processing program;
2 is a keyboard as an external input means; 3 is a machining program analysis means for reading and analyzing a machining program stored on a paper tape; 4 is a movement command data obtained by analyzing the machining program; and an interference area setting means to be described later. Interference area comparison processing means for comparing the interference area data set in 5 and determining whether or not they interfere with each other; 5 is an interference area for setting an interference area in advance by inputting data regarding the interference area from the keyboard 2; 6 is an interference area avoidance processing unit that newly sets a movement route to avoid the interference area based on the output of the interference area comparison processing unit 4; 7 is a motor 9 based on the output of the interference area avoidance processing unit 6;
, 10.

Next, the operation will be explained with reference to the flowchart shown in FIG. First, work from keyboard 2,
Data regarding the interference area caused by mechanical elements such as tools, machining conditions, etc. is input to the interference area setting means 5, and the interference area is set (S30). On the other hand, the machining program analysis means 3 reads and analyzes the machining program from the paper tape 1, outputs movement command data, and inputs this movement command data to the interference area comparison processing means 4 (S31). The interference area comparison processing means 4 compares the movement command data with preset interference area data, and determines whether or not the moving route interferes with the interference area (S32).

As a result, if the two do not interfere with each other, the interference area avoidance processing means 6 takes in the movement command data on the machining program as is and outputs it to the movement processing means 7 (S32). Further, when the two interfere with each other, the interference area avoidance processing means 6 avoids the interference area, for example, as shown in FIG.
A new movement route as shown in is set, and the movement processing means 7
(S33).

As a result, the movement processing means 7 moves to the movement starting point 2 as shown in FIG. 2 based on the input command data.
The movement data of the movement route from 1 to the movement end point 22 via the intermediate points 28 and 29 is calculated, and the motors 9 and 10
A controlled object, such as a tool, is moved by a predetermined amount to perform a machining operation.

Example 2. In the first embodiment, the output of the machining program analysis means 3 is directly compared with the preset interference area, but as shown in FIG. The movement data output from the movement processing means 7 is compared and determined by the interference area comparison processing means 11 to determine whether or not it interferes with a preset interference area, and the interference area avoidance means 12 creates a new movement route. You can expect the same behavior even if you set it.

[0013]

[Effects of the Invention] Since the present invention is configured as explained above, simply by arbitrarily setting an interference area in advance, a new movement path for the controlled object to avoid the interference area can be generated. Therefore, there is no need to consider the presence or absence of interference in advance especially when programming a machining program, which simplifies the machining program and facilitates its creation.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a numerical control device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing the relationship between a moving route and an interference area according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a flowchart of Embodiment 1 of the present invention.

FIG. 4 is a block diagram showing the configuration of a numerical control device according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing the configuration of a conventional numerical control device.

[Explanation of symbols]

1 Paper tape 2 Input means 3. Machining program analysis means 4 Interference area comparison processing means 5 Interference area setting means 6 Interference area avoidance processing means 7. Movement processing means 9 Motor 10 Motor

Claims (1)

[Claims] 1. Interference area setting means for setting an interference area that interferes with a movement path based on a machining program of a controlled object by inputting in advance from the outside; It is characterized by comprising an interference area comparison processing means for checking the presence or absence of interference, and an interference area avoidance processing means for setting a new movement route that avoids the interference area when the movement route and the interference area interfere. Numerical control device.