Straightness measuring instrument

摘要

A straightness measuring instrument includes a base, two loading units, a center clamping apparatus, and a measure apparatus. The base includes two support rods and a sliding rod. The loading units are mounted on the base and are arranged along an axial direction of the support rods at intervals. The center clamping apparatus is mounted in the base and includes a fixed seat and a movable seat. The measure apparatus is mounted movably around the sliding rod. The loading units are adjustable for easy and quick movement depending on the length of a workpiece. Also, the center clamping apparatus can assist with clamping the workpiece that has different diameters.

主权项

1. A straightness measuring instrument comprising:
a base including
two support seats being upright straight and parallel with each other;two support rods mounted through one side of the support seats and parallel with each other;a driving rod mounted through the support seats and located under the support rods;a driving mechanism mounted on one of the support seats and connected with the driving rod; anda sliding rod mounted through another side of the support seats and parallel to the support rods; two loading units mounted on the base and arranged along an axial direction of the support rods at intervals; each loading unit including
a loading seat mounted movably around the support rods and the driving rod;two bearing units mounted in the loading seat and mounted around the support rods;a driving wheel mounted in the loading seat, mounted around the driving rod, and abutting against the bearing units; a center clamping apparatus mounted on the base and including
a fixed seat mounted on one of the support seats;a movable seat movably mounted around the support rods and located opposite to the fixed seat; the loading units located between the fixed seat and the movable seat; and a measure apparatus mounted movably around the sliding rod.