Applied to the method of water cutting machine tool path planning

Abstract

The present invention relates to a method for tool path planning applied to water cutting machine tools, wherein the method includes collecting several feature points on the surface of the workpiece to be processed, and according to the measured points corresponding to the feature points on the surface of the workpiece to be processed Height, model the surface of the workpiece to be processed, and the cutter head of the water jet machine tool is processed according to the tool path obtained from the model planning. Adopting the method of the present invention applied to the planning of the tool path of the waterjet machine tool can effectively process the curved surface without designing an additional special altimeter. Compared with the prior art, it has the advantages of high efficiency and low cost.

Description

technical field [0001] The invention relates to the technical field of numerical control, in particular to the field of adjusting the height of the cutter path of a water cutting machine tool, and specifically refers to a method applied to planning the cutter path of a water cutting machine tool. Background technique [0002] When the waterjet machine tool is processing the workpiece, it is necessary to maintain a certain target distance to achieve the best processing effect. When the surface of the processed workpiece is not a horizontal plane, the numerical control system of the waterjet machine tool needs to obtain the height of the upper surface of the workpiece through the height measuring equipment to adjust the target distance of the cutter head, that is, to adjust the target distance of the cutter head by measuring the height so that the water Cutting machine tools can obtain the best processing results. [0003] In the prior art, the height measurement methods gene...

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Problems solved by technology

[0004] Among them, both manual height measurement and processing height measurement are to adjust the height of the cutter head after selecting a certain point in the workpiece for height measurement, but this method of selecting a certain point in the workpiece for height measurement can only obtain the height of the height measurement point. Height, when the surface of the workpiece is a curved surface with a large height change, the processing effect is very poor after using this height measurement method

[0005] The method of three-point height measurement is to obtain three points on the surface of the workpiece to be processed to obtain the inclination angle of the surface of the workpiece to be processed, thereby adjusting the height of the cutter head, but this method of height measurement is only suitable for the case where the workpiece to be processed is a flat workpiece Use under

[0006] Take the processing of a rectangular tool path with an inclination angle as an example. After using the method of three-point height measurement or height measurement during processing, the parallel sides of the rectangle have obvious bends, and the effect is very poor.

[0007] The real-time height measurement method is to adjust the height of the cutter head according to the real-time feedback results of the height gauge, but the cost of the height gauge used in this height measurement method is relatively high, and the probe head of the height gauge will be in real-time contact with the workpiece, which is easy to wear , with certain limitations

This method of real-time height measurement requires the selection of high-cost real-time height measurement equipment, and the height measurement equipment also needs to be turned on all the time during the processing, which is extremely expensive.

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