Substantiation of application of the developed device for measurement of geometrical characteristics of parts in the course of processing on grinding operations

摘要

To increase the productivity of manufacture of parts and reduce the number of reject it is necessary to automate the process of monitoring directly in the processing of parts, especially in finishing operations. For this purpose machines are modernized by system for real-time measuring. The analysis of existing systems revealed potential of development of the instrument making, allowing to reduce cost of processing of a unit of production and a measurement uncertainty, to increase flexibility of change-over to a new type of processing work pieces even with a intermittent surface on retention of the maximum values of productivity in the course of processing on grinding machines. The objective of this research is the substantiation of joint application of grinding machines and the developed system for real-time measuring of geometrical characteristics of the parts, based on a new constructive principle, with maintenance of accuracy of measurement no more than 1...2 microns, fast change over for other size and possibilities of measurement of parts with a intermittent surface. The system for real-time measuring is developed on the basis of minimization on the created model of influence of the revealed possible components of a total processing and measurement uncertainty of parts. Economic feasibility of application of the new system for real-time measuring taking into account effect from reduction of time of grinding operation and effect from decrease in percent of reject rate is proved. The substantiation is made on an example of processing of a kit of parts of several names. High technological level and economic feasibility of results of the researches, appeal to practical implementation in manufacture of the created system for real-time measuring is proved. The research materials can be used as a substantiation of introduction in manufacture of carried out system for real-time measuring, and as for the further scientific perfection of processes of automation of control of geometrical characteristics of products in the processing of grinding operations in machine-building manufacture.