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Numerical controller for controlling feed speed

A technology of numerical control device and feeding speed, applied in automatic control device, program control, feeding device, etc., can solve problems such as speed dispersion

Active Publication Date: 2014-12-03
FANUC LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the above technique analyzes the functional pattern of the processing block to calculate the allowable speed, so the calculated speed may vary due to the difference in the time taken for the analysis.

Method used

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  • Numerical controller for controlling feed speed
  • Numerical controller for controlling feed speed
  • Numerical controller for controlling feed speed

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Embodiment Construction

[0026] First, use figure 1 The block diagram of illustrates an embodiment of the numerical control device of the present invention.

[0027] The CPU 21 is a processor that controls the numerical control device (hereinafter referred to as the numerical control device) 100 for a 4-axis machining machine as a whole, and reads the system program stored in the ROM area of ​​the memory 22 via the bus 38, and follows the read The system program controls the entire numerical control device. In the RAM area of ​​the memory 22, temporary calculation data, display data, and various data input by the operator via the display / MDI unit (manual data input unit) 50 are stored. In addition, in a nonvolatile memory area constituted by the SRAM of the memory 22 and the like, a machining program read via the interface 23, a machining program input via the display / MDI unit 50, and the like are stored.

[0028] The interface 23 can be connected to external devices (not shown) such as the numerical cont...

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Abstract

A numerical controller obtains a necessary moving distance for the completion of movement in each interpolation period, based on a moving distance for each block and the input ratio of a distance by which movement is completed in each interpolation period to the moving distance for each block. If the obtained moving distance is shorter than the moving distance for each interpolation period based on an initially set feed speed, the feed speed is changed to a speed for moving the moving distance in each interpolation period.

Description

Technical field [0001] The invention relates to a numerical control device for controlling a machine tool, in particular to a numerical control device for controlling the feed speed during linear interpolation and circular interpolation. Background technique [0002] In the numerical control device that controls the machine tool, the speed control of the arbitrary command feed speed is performed. Here, when a high-speed feedrate is commanded, in the state where multiple blocks overlap is valid, if the command is moved within the interpolation cycle to complete the block-length linear interpolation or circular interpolation, the interpolation cycle is As a unit, a straight line connects the control points of each interpolation cycle to the shape processing, so sometimes the program shape of the block inserted between them is not reflected. [0003] Therefore, when the program shape needs to be maintained during processing, the following deceleration function is generally used to co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q15/013B23Q15/12
CPCG05B19/402G05B2219/49001B23Q15/013B23Q15/12G05B19/416
Inventor 持田武志
Owner FANUC LTD
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