ANSI B7.1-2000 pdf download Safety Requirements for Use, Care and Protection of Abrasive Wheels
1 .2.20 device: A piece of equipment or a mechanism designed to serve a special purpose or perform a special function. (See de- vice, safety.)
1 .2.21 device, auxiliary: A device that by itself does not safeguard hazards but is required to ensure the proper operation of the safeguarding (guards, safety devices or methods).
1 .2.22 device, safety: A means that detects or prevents inadvertent access to a hazard (see safeguarding).
1 .2.23 discrete parts or assemblies: Separate or distinct units or elements that are considered output or work in progress of an industrial machine or manufacturing system.
1 .2.24 dressing:* Dressing is the process of removing bond material from around the cutting grains or diamonds in order to expose new, sharp cutting edges and to provide chip clearance for the material removal process. (See truing.)
1 .2.25 enclosure, additional: Additional en- closure is protection which isolates the operation from people in the surrounding area. (See splash shield.)
1 .2.26 exhaust zone: The effective area of the ventilation system used for control of dust and fumes.
1 .2.27 flanges: Flanges are collars, discs or plates between or against which wheels are mounted and are referred to as adaptor, sleeve, straight relieved or straight unrelieved types.
1 .2.28 frame: See base.
1 .2.29 grind cycle: The period of time, either continuous or intermittent, during which the grinding tool is engaged to remove material from the workpiece.
1 .2.30 grinding machine:* A grinding machine, designed primarily for metal removal, presents a grinding tool against a workpiece, producing a change in shape, size, and surface finish. It may also be used for grinding material other than metals such as glass, ce- ramics, plastics, and rubber.
1 .2.31 grinding surface or face: The grinding surface or face is the surface of the abrasive wheel upon which grinding is properly performed.
1 .2.32 grinding tool: See section 1 .2.1 .
1 .2.33 guard:* A barrier that prevents entry into the point of operation or other hazard area.
1 .2.34 guard, adjustable barrier: A guard with provisions for adjustment to accommodate various jobs or tooling setups.
1 .2.35 guard, fixed barrier: A guard affixed to the frame, bolster or other surface in such a manner so as to enclose all or part of the point of operation or other hazard area.
1 .2.36 guard, interlocked: A fixed or mov- able barrier or section of a barrier interlocked with the machine control system to (1 ) prevent normal machine actuation when the barrier is open or (2) prevent opening of the barrier or section of the barrier while the machine is in motion.