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Data processing method of multi-axis linkage electric discharge machining feed rate post-processor based on space mapping

A multi-axis linkage and data processing technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as affecting the processing effect and speed mismatch, achieve stable EDM state, eliminate speed fluctuations, The effect of improving the efficiency of EDM

Active Publication Date: 2019-06-21
SHANGHAI JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

Due to the different dimensions of linear velocity and angular velocity, the direct synthesis without considering the radius of rotation of the rotating shaft will inevitably cause a speed mismatch, thereby affecting the processing effect

Method used

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  • Data processing method of multi-axis linkage electric discharge machining feed rate post-processor based on space mapping
  • Data processing method of multi-axis linkage electric discharge machining feed rate post-processor based on space mapping
  • Data processing method of multi-axis linkage electric discharge machining feed rate post-processor based on space mapping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] According to the measurement, the reference point on the selected workpiece is 120mm away from the center of rotation of the workpiece, and the reference point on the selected electrode is 27.5714mm away from the center of rotation of the electrode), such as Figure 5 shown.

[0039] Read the first line of code, then start to read the G code line by line from the second line, and calculate the displacement of the second line of G code relative to the first line in each movement axis Δx, Δy, Δz, Δa, Δb, Δc. Calculate the displacement Δs of the machine tool coordinate space extension line. Calculate the displacement δs of the reference point on the space electrode in the workpiece coordinate system relative to the reference point on the workpiece. Multiply the originally planned feedrate of the diverted G code by Δs / δs, and replace the original feedrate.

[0040] The original processing feed speed is planned to be f10 according to the empirical formula, and the feed sp...

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Abstract

The invention relates to the data processing method of a multi-axis linked electric discharge machining feeding speed postprocessor based on spatial mapping. With respect to electric discharge machining participated by a rotation axis, a control object is a relative distance between an electrode and a workpiece. According to the method, through start from a model of the electrode and the workpiece, displacements of each line of G codes under a machine tool coordinate system and a workpiece coordinate system are solved through spatial mapping; the ratio of the displacements is solved; the ratio is multiplied by an originally planned feeding speed of each line of G codes; and a machining program is updated. According to the method, speed fluctuation resulting from spatial transformation can be greatly reduced; the discharge state of movement participated by the rotation axis is protected from instability; occurrence of open circuit and short circuit states can be reduced; and the electric discharge machining efficiency can be improved.

Description

technical field [0001] The invention relates to electric spark process control, belongs to the technical field of special machining, and specifically relates to a data processing method of a multi-axis linkage electric spark machining feed rate postprocessor based on space mapping. Background technique [0002] Modern CNC machining includes several typical links of CAD (Computer Aided Design), CAM (Computer Aided Manufacturing), post-processing, and CNC machining, such as figure 1 shown. CAD designs the workpiece, CAM simulates the processing process to generate processing trajectory information, and the post-processing process optimizes the processing code for equipment or process to generate processing G code files, and the CNC processing system follows the G code for processing to obtain better results. Processing effect. [0003] EDM is a process of removing material from a workpiece by a series of spark discharges between the workpiece and the electrode. EDM is widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06F17/15
CPCG06F17/15G06F30/17G06F30/367
Inventor 陈昊奚学程刘宏达赵万生
Owner SHANGHAI JIAOTONG UNIV
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