| 摘要 |
A vise comprises mainly a base, a sliding member, a movable base, and an urging member. The base consists of a long slot extending axially in the middle thereof and of a holding base located at upper portion of the rear end thereof. The holding base comprises at front end thereof a jaw. The sliding member comprises on front end thereof a cooperating block of a predetermined shape and at front end thereof a circular arc portion having an appropriate curvature radius. The movable base consists of a bevel face with hole having at rear end thereof a bevel fave with a cavity disposed thereon for placing and positioning an intermediate member and of a protruded block with the protruded arc portions of predetermined curvature radii. The urging member is composed of a screw and a top block comprising at rear end thereof a recessed arc portion having a curvature radius corresponding to that of the circular arc portion.
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