Numerical control programming method and apparatus for blade rotary milling process

Abstract

The present disclosure provides a numerical control programming method and apparatus for a blade rotary milling process. The numerical control programming method for the blade rotary milling process comprises: constructing a blade three-dimensional model; formulating a blade rotary milling machining scheme; dividing a blade machining area; acquiring a tool contact file: selecting a ball-end milling machining method, setting milling parameters, determining a cutting direction of the milling tool on the blade machining area, and generating tool contact data of the divided blade machining area; constructing a rotary milling tool track: sequentially constructing tool contact data of the rotary milling scheme according to the tool contact data of the divided machining area; and generating a machining program: combining the principle of the rotary milling envelope, and using the tool contact data to generate tool point data of the ring cutter, and further to generate the machining program ofthe rotary milling. According to the technical scheme of the present disclosure, the tool track calculation accuracy and programming efficiency under the conditions of the cyclone milling process areimproved.

Description

technical field [0001] The disclosure belongs to the field of numerical control machining, and in particular relates to a numerical control programming method and device for blade rotary milling technology. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Blade parts widely exist in electromechanical equipment such as aero-engines, turbines, compressors, fans, propellers, etc., and play an important role in many industrial fields. High-efficiency, high-quality, and low-cost manufacturing of blades is of great significance to national economic and social development. [0004] The commonly used CNC machining methods for the curved surface of the blade body are: (1) end milling method with ball end milling cutter, also known as point milling method, that is, the curved surface is gradually enveloped by ball end milling cutter; (2) side milli...

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Problems solved by technology

The inventors found that when using this method, the calculation of the tool path is also very cumbersome, and it is impossible to directly use existing commercial CAM software (such as Ug, Creo, MasterCam, etc.) to carry out numerical control programming. and other general calculation tools to manually calculate the tool path and compile the NC machining program

Since the blades are mostly free-form surfaces, the calculation of the tool path data is quite cumbersome, the workload is heavy, the efficiency of manual programming is low, error-prone, and it is difficult to proofread, and some even cannot be completed at all.

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