On-line measuring method for radials profile of compressor disc-like part of engine

Abstract

The invention belongs to the field of automatic detection, particularly relates to an on-line measuring method for the radials profile of a compressor disc-like part of an engine. The method comprises the following steps that the measuring path of a measuring head is planned; the radius of sphere of the measuring head is corrected; characteristic points on the profile of a compressor disc are selected as measuring points; the motion program of the measuring head is edited; the motion track of the measuring head is optimized in virtual simulation software; the motion program of the measuring head is run; the measuring head traverses all the measuring points; the mean value of the measured values of the measuring points after errors are compensated is compared with the design theoretical value of the compressor disc part; when the measured values are within the design tolerance zone scope of the part, the processing size of the measured compressor disc part is considered to be qualified; otherwise, the processing and measurement are carried out again, until the size of the part is qualified. According to the method, a traditional manufacturing mode in the current industry that a design characteristic is matched with a set of measuring tooling is changed, so that the tooling manufacturing cost and the rework hours are saved, the one-time qualified rate of product processing is improved, the new product development cycle is shortened and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of automatic detection, and in particular relates to an on-line measurement method for the radial plate profile of an engine compressor disk part. Background technique [0002] At present, the manufacturing process of engine parts has generally achieved a high degree of specialization, informationization and automation, without manual intervention, and high-speed unmanned intervention processing technology is widely used. The comprehensive integration of multiple technologies such as tool length and radius automatic compensation technology, parts online measurement technology, automatic tool change technology, and parts automatic clamping and positioning technology is part of advanced digital, automated, precise, and composite highly integrated manufacturing technologies. , and the online measurement method of parts is the core and an important part of digital manufacturing. [0003] The online measurement method is ...

AI Technical Summary

Problems solved by technology

[0004] At present, the structure of the compressor disk parts obtained by turning in the engine manufacturing industry is shown in the attachment figure 1 And attached image 3 As shown, it is composed of spoke umbilicus, web profile, and installation edge, and its web profile is composed of circular arc, line segment or spline curve (non-linear profile). There are 2 feature points for checking and measuring the machining dimensional accuracy of the radial plate. There are 4 control points on the upper and lower sides. However, because the geometric shape of the radial plate is irregular and not parallel to the straight line or arc of the X-axis of the machine tool, the conventional measurement method It is necessary to dispatch 4 sets of special measuring tools to accurately measure the size of the radial plate surface after processing. However, the existing conventional process method of using special measuring tools to measure the characteristic points of the radial plate surface requires the special design of the structure of the special measuring tools , and then manufacture, the cost is high and the time-consuming is long, which seriously restricts the development cycle of new products. The tooling manufacturing time of special measuring tools accounts for about one-third to one-fourth of the overall development time. If the product is from the development stage to finalization Once the stage is remodeled, all the measuring tools are scrapped and need to be redistributed

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