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Compensation method for overcut of ruled surface impeller blades

A technology of impeller blades and compensation methods, which is applied in the direction of instruments, computer control, simulators, etc., can solve problems such as difficult correction of overcut errors, achieve consistency and stability, and achieve the effect of qualified dimensions

Active Publication Date: 2020-10-02
无锡航亚科技股份有限公司
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  • Abstract
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a compensation method for the overcutting of the ruled surface impeller blades, so as to solve the overcutting error of the triangular area near the tip of the front edge caused by the five-axis linkage of the machine tool in the prior art, but it is difficult to correct , technicians manually adjust the shape of these surfaces, which is prone to some uncontrollable quality problems.

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  • Compensation method for overcut of ruled surface impeller blades
  • Compensation method for overcut of ruled surface impeller blades
  • Compensation method for overcut of ruled surface impeller blades

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Embodiment Construction

[0028] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0029] see Figure 1-5 , a preferred embodiment of the present invention provides a method for compensating for blade overcut of a ruled surface impeller, including: Step 1: optimize the ruled surface of the impeller through the ruled surface function of NX software, and use the extraction curve command to extract the model Then use the ruled surface or grid surface function to reshape the new blade ruled surface, the new blade ruled surface can be finished with the sid...

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Abstract

The invention discloses a compensation method for overcut of ruled surface impeller blades. The method comprises the following steps: directly carrying out compensation in NX software through simple size chain calculation without manually adjusting the shapes of ruled surfaces of the blades by technicians, wherein consistency and stability of the compensation have a direct influence on the size ofthe impeller; releasing allowance through finish machining for trial cutting of the blades; obtaining dimensional parameters of the blade, overcut parameters near the leading edge and the tip portion, calculating the error angle through reverse conversion of the parameters; and finally, compensating the error angle into the size parameters of the cutter, and calculating a compensated numerical control finish machining program, so that the size of the impeller blade is qualified. The method can solve the problem that due to existing five-axis linkage, the overcut error of the triangular area,close to the blade tip, of the leading edge is caused.

Description

technical field [0001] The invention relates to the technical field of impeller blade disc processing, in particular to a compensation method for overcutting of ruled surface impeller blades. Background technique [0002] In the field of turbomachinery and aerospace, in order to pursue the high efficiency of compressor compression, the accuracy of the impeller blades is required to be higher and higher, so a large number of straight-grained impellers are designed and used, because the straight-grained impellers can use tapered balls The head milling cutter is processed and formed at one time. Compared with the free-form impeller, the processing efficiency is increased by more than 5 times. While the efficiency of the ruled surface impeller is improved, the dimensional requirements are not reduced. This puts forward higher requirements for five-axis machining and NC programming. Requirements, now with the help of intelligent CAM software, impeller machining can be realized, b...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/35408
Inventor 刘振仝周进韩威齐盼盼
Owner 无锡航亚科技股份有限公司
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