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Surface Finish - 1: What is Surface Finish?
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WARNING: Machine tools present a safety hazard. Improper operation can result in severe injury. These topics are for non-laboratory study only and are not to be used in conjunction with the operation of any tool or machine described herein. Never use a machine tool without the supervision of a qualified instructor. | ||||||||
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A note before beginning. This topic is derived from Machinery's Handbook 26th edition. It will focus on the ANSI/ASME B46.1-1995 standard. There are other standards.
Surface finish is an apparent witness of tool marks or - lack of same - on the machined surface of a
Surface finish is a characteristic of any machined surface. It is sometimes called surface texture or roughness. The design engineer is usually the person that decides what the surface finish of a work piece should be. They base their reasoning on what the work piece is supposed to do. Here are a few examples that the engineer considers when applying a surface finish spec:
The design engineer communicates their desires by using a blueprint. The blueprint is the communication medium that the machinist will use to make the work piece. The surface finish is defined and measured as a surface profile. The main components of a surface profile are waviness and roughness. |
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label: surface finish, finish, symbols, ANSI/ASME B46.1, forumlas, measuring, costs |
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