计算机数控机床的安全和维护——毕业外文翻译、中英文翻译.docVIP

Safety and Maintenance For CNC Machine 1 Safety Notes for CNC machine Operations Safety is always a major concern in a metal-cutting Operation. CNC equipment is automated and very fast, and consequently it is a source of hazards , The hazards have to located and the personnel must be aware of them in order to prevent injuries and damage to the equipment. Main potential hazards include, rotating parts, such as the spindle, the tool in the spindle, chuck, part in the chuck, and the turret with the tools and rotating clamping devices, movable parts, such as the machining center table, lathe slides, tailstock center , and tool carousel, errors in the program such as improper use of the G00 code in conjunction with wrong coordinate value, which can generate an unexpected rapid motion, an error in setting or changing the offset value ,which can result in a collision of the tool with part or the machine, and a hazardous action of the machine caused by unqualified changes in a proven program, To minimize or avoid hazards, try the following preventive action: Keep all of the original covers on the machine as supplied by the machine tool builder Wear safety glasses, gloves, and proper clothing and shoes. Do not attempt to run the machine before you are familiar with its control. Before running the program, make sure that the parts is clamped properly. When proving a program, follow these safety procedures. Run the program using the machine Lock function to check the program for errors in syntax and geometry. Slow down rapid motions using the RAPID OVERRIDE switch or dry run the program. Use a single-block execution to confirm each line in the program before executing it. When the tool is cutting, slow down the feed rate using the FEED OVERRIDE switch to prevent excessive cutting conditions. Do not handle chip by hand and do not use chip hooks to break long curled chips. Program different cutting conditions for better chip control. Stop the machine if you need to properly