(1) Size accuracy: The width, length, and depth of the groove have a certain size and accuracy requirements, especially for parts that matches other parts, and the size and accuracy requirements are relatively high. For example, on both sides of the key slot, because of the combination of the flat key, the width size tolerance is less than equal to 0.052mm.
(2) Skill accuracy: After the various shapes of the groove are processed by milling precision parts, the shape accuracy requirements of the pattern shall be met. The right -angle grooves and the special grooves are composed of flat planes. Therefore, there are usually basic requirements for flatness and linearity. For planes that are used in cooperation, their shape requirements are relatively high, such as the two sides of the key slot, the two sides of the T -shaped groove benchmark, V -shaped surface of the V -shaped groove, and the slope of the dovetail groove.
(3) Position accuracy: Generally there are location accuracy requirements between the precision part processing slot and the benchmark. Requires, the parallelism between several T -shaped grooves is required. In addition, the grooves distributed on the axis parts have the requirements of equal accuracy or angle.
(4) Surface roughness: There are surface roughness requirements for each surface of the composition groove. The surface roughness value of the surface requires less. For example Therefore, it is required to have a small surface roughness value.
