Helical cutter turning trajectory error prediction method

A technology of error prediction and turning, applied in the direction of program control, instrument, computer control, etc., can solve the problems that the surface characteristics cannot be guaranteed accurately, large defects and loopholes, etc.

Active Publication Date: 2018-06-22
JILIN UNIV
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Problems solved by technology

[0004] The invention provides an error prediction method for the turning trajectory of a spiral tool to solve the problem that the existing error so

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  • Helical cutter turning trajectory error prediction method
  • Helical cutter turning trajectory error prediction method
  • Helical cutter turning trajectory error prediction method

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[0123] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. However, it should be understood that the explanation of the examples here is only used to describe the present invention in more detail, and is not used to limit the present invention.

[0124] In order to better explain the error prediction of the spiral tool turning trajectory of the present invention, taking the spiral tool turning trajectory used in sine wave cylindrical machining as an example, the error prediction solution process is introduced in detail, but it should be understood that The present invention is not limited to this, and is also applicable to the error prediction of the turning path of the spiral tool in the machining of free-form surface features, the machining of compound surface with multiple features of cylindrical surface,...

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Abstract

The invention relates to a helical cutter turning trajectory error prediction method and belongs to cutter turning trajectory prediction methods. The method includes: calculating a residue differencedelta 1 between adjacent two turning trajectory cutter contact points; calculating a residue difference delta 2 among straight lines between adjacent two turning trajectory cutter contact points; calculating arc height error delta 3: calculating step length 1BC between adjacent cutter contact points, solving, judging a relation between a distance 13 from the middle point of the step length to Z axis and 14, determining whether the arc height error is positive or negative, solving the arc height error delta 3 through a derived formula, comparing the arc height error delta 3 with required processing accuracy delta 0, determining processing parameters for subsequent processing if requirements are met, modifying corresponding parameters, calculating and re-comparing the above three kinds of errors if the requirements are not met. The method is used for predicting related errors in helical processing trajectories, and processing parameters are determined finally by constraining each error value to acquire processing trajectories.

Description

technical field [0001] The invention relates to an error prediction method for a turning track of a tool, in particular to an error prediction method for a turning track of a spiral tool. Background technique [0002] Helical tool turning trajectory is widely used in existing processing methods. For example, in the processing of optical free-form surfaces, tool trajectory planning generally adopts equal-angle and equal-arc-length tool trajectories. And in the processing of compound feature surfaces with these features, the trajectory planning of helical tool turning can also be used. For the trajectory planning of helical tool turning, it is necessary to consider the error related to constraints to set the trajectory planning parameters during the trajectory planning process. [0003] Existing mechanical processing usually adopts the method of trying to measure the processing accuracy, which is time-consuming and laborious, and has a certain degree of blindness. Error predic...

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Application Information

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IPC IPC(8): G05B19/401
CPCG05B19/401G05B2219/34242
Inventor 冀世军李建锋赵继孙昌瑞任勇聪闫俊杰
Owner JILIN UNIV
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