| 摘要 |
PROBLEM TO BE SOLVED: To obtain an inexpensive angle selection jig in which a handling is simple, certain and convenient and the number of parts is less by directly mounting on an upper surface of a milling machine table utilizing a mounted vice on the milling machine or the like. SOLUTION: A positioning straight pin 3 is inserted to a standard hole 1A of a base plate 1 and is made as a center of a rotation radius. A moving plate 2 corresponding to an angle selection is superposed and selects an angle and then the other positioning straight pin 3 is inserted to an angle selection hole 1B. The angle selection hole 1B is arranged at a space of 5 deg. and angle setting surfaces 2B are provided on two positions at the moving plate 2 and then, an angle of a space of 0.5 deg. can be set on three kinds of moving plates 2. An angle selection other than a space of 0.5 deg. is carried out in a similar method to a sine bar system in which a positioning straight pin is not inserted to the angle selection hole and a moving plate 2 of which the angle setting surface 2B is parallel is used and the angle can be set.
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