Collision preventing device for a measuring apparatus and measuring apparatus having collision preventing unit

Abstract

A collision preventing device includes: a holder 20; an annular collision detecting portion 30; holding means 40; and switching means 50. The holder 20 is attached to a non-contact probe 18. The annular collision detecting portion 30 covers the non-contact probe 18. The holding means 40 holds the collision detecting portion 30 displaceably and returnably in a Z-axis direction with respect to the holder 20. The switching means 50 detects a relative displacement occurring between the holder 20 and the collision detecting portion 30 and commands a driving system to stop the movement of the non-contact probe 18 or move the non-contact probe 18 in a escape direction. Accordingly, it is possible to prevent the breakage of the non-contact probe 18, the main body of the measuring apparatus, the work, and the like due to the collision.

Dependencies are inferred from the claim text.