Smoothing method of extremum region in polar coordinate interpolation for numerical control system
A technology of numerical control system and extreme value area, which is applied in the field of smooth processing of extreme value area by polar coordinate interpolation in numerical control system. High, satisfying the effect of real-time path changes
Active Publication Date: 2016-12-21
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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[0004] Aiming at the inaccurate determination of the extremum area and the unsmooth processing of the path of the tool center point in the extremum area in the prior art, the present invention provides a polar coordinate interpolation pole for a numerical control system that combines the C-axis constraint coefficient α and the transition coefficient β. Value area smoothing method to realize path smooth interpolation in the polar coordinate interpolation area
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[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0037] Such as figure 1 Shown is a schematic diagram of the machine tool used in the present invention. The turning center controlled by the CNC system consists of two linear axes (X, Z) that must be perpendicular to each other. The rotary axis (C) must be parallel to the linear axis Z (rotate around Z). The linear axis X and the rotary axis C intersect. For the XwYw path of the workpiece coordinate system plane for end-face machining, the F feed rate is programmed, and the numerical control system is converted to the XM axis and the CM axis for interpolation movement. The numerical control system uses the polar coordinate interpolation extremum area smoothing method, which is used for the numerical control system used by the turning center with two linear axes (X, Z) and rotary axis (C).
[0038] A machining program including direct multi...
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The invention relates to a numerical control system and a control method for controlling an XZ linear axis and a rotary C axis in the numerical control technology field. A turning center controlled by the numerical control system comprises two linear axes (X, Z) which must be perpendicular to each other, a revolving axis (C) must be in parallel with the linear axis Z and rotates around the Z, the linear axis X is crossed with the revolving axis (C), an XY path in an end face processing Cartesian plane is programmed at an F feeding speed, the numerical control system is switched to enable an X axis and a C axis to carry out interpolation motion, the numerical control system carries out acceleration and deceleration control of the XY path according to the extremum region of an approaching pole point (X=0, and Y=0) in the Cartesian plane, the C axis is prevented from being out of tolerance, and thereby smooth polar coordinate interpolation extremum region processing is realized.
Description
technical field [0001] The invention relates to a numerical control system and a control method for controlling an XZ linear axis and a rotary C axis in the technical field of numerical control, in particular to a method for smoothing the extreme value area of polar coordinate interpolation used by the numerical control system. Background technique [0002] When the face milling of the component is performed in the turning center (without Y coordinate axis), it is necessary to form a virtual orthogonal Cartesian X, Y, Z in the X, Z, C coordinate system of the machine tool through the linkage of the X and C axes Coordinate system to complete the general milling NC program compilation, ensure that the programming method is consistent with the milling programming method, bring convenience to user programming, improve processing efficiency, and enrich the functions of the turning center at the same time. There is a special point in the orthogonal Cartesian trajectory plane: X=...
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IPC IPC(8): G05B19/41
Inventor 王品郑飂默刘峰韩文业武南
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD