Dynamic generation method of flexible production line processing coordinate system

Abstract

The invention discloses a dynamic generation method of a flexible production line machining coordinate system. Selecting a fixed position of a standard tray on any machine tool in the production line as a reference point; measuring original coordinates of the machine tool in advance; and calling user variables before product processing to automatically generate a machine tool reference coordinate system. Then establishing a theoretical position relationship among the to-be-processed product, the tool and the standard tray in a programming environment containing the to-be-processed product, the tool and the standard tray; and creating a system macro program containing a position relationship between the initial processing coordinate system of the product and the reference coordinate system of the machine tool, and automatically generating the initial processing coordinate system of the product in the machine tool environment. And finally, creating an automatic measurement alignment program under the initial processing coordinate system of the product. Firstly, a reference edge of a product is measured, the angle deviation is calculated and automatically compensated, and a transition machining coordinate system is generated; and then measuring the X, Y and Z direction positioning surfaces of the product, calculating and correcting the position deviation between the product positions in the X, Y and Z directions and the transition processing coordinate system, and generating a final processing coordinate system.

Description

technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a method for dynamically generating a workpiece numerical control machining coordinate system on multiple numerical control machining machine tools of a flexible production line. Background technique [0002] In the field of digital processing, the digital control of all processing movements is based on the processing coordinate system. For each part machined on a CNC machine tool, a specific machining coordinate system and its mapping relationship with the machine tool's original coordinate system must be established first. [0003] With the gradual development of processing technology in the direction of intelligence, based on digital processing, the flexible production line manufacturing mode integrating intelligent control technology is more and more applied to the field of processing and manufacturing. Because in the flexible production line manufacturin...

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Problems solved by technology

However, the shortcomings of this traditional solution are also obvious: the accuracy of product clamping is greatly improved, and the manufacturing difficulty of the automatic clamping system is increased; the error caused by the clamping system is difficult to eliminate, which brings certain products. Accuracy is lost, and with the long-term use of the clamping system, the range of error fluctuations is further increased; especially for flexible production lines that use automatic pallet exchange processing, the allocation and scheduling of pallets between machine tools is uncertain, which again increases product quality. The accumulation of errors in processing on different machine tools; in addition, for flexible production lines, large product types and large quantities are its main characteristics and advantages, and this solidified coordinate system establishment method is very important for hundreds of types of continuous production lines. For changing products, the flexibility of the production line is reduced

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