Research Into NC Program Transfer Basded On Web And Simulation

With the development of technology and science, Machine manufacturing gives a higher request to the quality of product. Numerical control tools are developing quickly and are used widely because they are more roboticized, less errors of machined parts, products' quality are steady, easy to product exploder and easy to realize computer aid manufacture. But if you give a vertical look to the use of domestic numerical control tools, you can know that quite a number of numerical control tools making less use of, and their efficiency are not bring into full play. These phenomena are caused by many factors. Firstly, most of CNC don't have network function and big capability of store facility in the early. Secondly, Numerical control program/control parameter/tools compensation must be inputted by hand on-line. With the development of CAD/CAM system, this software goes into practical machining. It is a effectual way to improve numerical controls' efficiency by use auto-program system or CAD/CAM soft to make numerical control programs, controls parameter and tools compensation off-line, after NC programs are validated by imitated, they are transferred from local server computer to CNC by a data transfer protocol.This paper gives a detail research to FANUC-0 upright numeral control milling machine of numerical control and mould develop graduate school. It uses RS-232C series interface as a communication interface. We use VC++6.0 as a empolder tool, give some research as fellows:(1) The communication of local server computer and FANUC-0 CNC is researched: RS-232C series interface is used as communication breakthrough, RS-232C's pins definition, numerical control system configuration, the connection mode between CNC and PC, format of numerical control program, communication parameter definition, communication mode, stream transfer protocol definition are lucubrated. Photoelectricity reader and tape puncher were simulated and thecommunication between CNC and local server PC is made true. (2) The research of building Computer net, realizing the net communication between local server PC and CAD/CAM design computer is done. Include: Web analysissite, juncture mode and communication protocol are chose. NC programs and control parameters made by long-distance CAD/CAM software are transferred to local server computer, then are transferred to CNC's memory in the form of text file. NC program and control parameters are loaded through long-distance and are transferred by internet/intranet.(3) NC programs made by CAD/CAM software are imitated as machine tool machining in order to validate the correctness of the program. CNC's setting parameters and machining time can be inquired about. Machining tool's route is imitated to make designer to optimize NC programs better based on CNC's setting parameters.(4) Microsoft Visual C++ 6.0 based on Windows is used as exploder tool. Imitate function and user interface are designed, and the mathematics modeling is made. Numerical control program imitation software is developed, too.