Abstract
For realizing automatic data collecting of the touch probing system on the CNC machine tool and practicing the application technology of big data from the CNC machining process, a special NC program was developed on the Siemens 840D SL controller to record data with a defined text format, and they were uploaded onto the host computer automatically. With the help of DB management software in the host PC, data obtained were sent into the MES database regularly, and then automatic data collecting of manufacturing process information was realized. With the big data technology, three applications based on big data technology have been listed. They are duo active error detection on the probing system, geometrical accuracy monitoring, and management of the cutting parameter and tool life. Tests of cutting on the platen of an injection molding machine with a PAMA SR3000 floor-type CNC boring-milling machine proved that the new technology achieves its design objectives.
Highlights
An increasingly complex production process is accompanied by huge comprehensive information, covering environment, equipment comprehensive accuracy, tools, technology, efficiency, quality, etc
A trigger probe is advanced digital measurement equipment that is commonly used in high-end CNC machine tools and flexible manufacturing systems (FMSs). e native natural digital feature can support the acquisition of data about quality and process from production
It is found in practical applications that most of the measurement errors are based on systemic reasons. e system accuracy of a machine tool could be affected by many factors, and it is difficult to find, trace, and repair immediately, so the method of studying the error of the trigger probe itself is too limited
Summary
Version 4.7 SP1, Siemens 840D SL CNC systems have added a ‘Process Data Share’ function, which enables simple NC programming to write data segments outward to a fixed text file at a specified address on the LAN, enabling a basic digital communication of machining data at a very low cost. By running the NC program cycle, the CNC machine saves the information and data as the text file and transfers it to the buffer area temporally. E interactive system is the window for inputting, displaying, maintaining, and managing the information It could be with different authorizations for reading and writing. E information system consists of a buffer area, a database, and a library of executable instructions for receiving, storing. It processes the requested instruction from the interactive system. e host computer in this paper is equivalent to the buffer area, which is used to store temporary data. e interactive system is generally developed autonomously and customized on demand
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