| 摘要 |
PROBLEM TO BE SOLVED: To provide a guide unit, of which manufacturing allowance to be maintained in relation to a space of a guide orbit is smaller in comparison with the conventional technique. SOLUTION: This guide unit has rolling members 18b, 19b, 20b, 21b to be inserted into each corresponding groove 18a-b, 19a-b, 20a-b, 21a-b of members 7, 8a, 8b to be guided opposite to each other. In this case, a part of a guide surface is formed of a chamfered flat surface of flat chamfered round bars 18d-e, 19d, 20d, 21d-e to be inserted into grooves 18b, 19b, 20b, 21b freely to be rotated. |
