Positioning device and positioning mechanism for same

摘要

A positioning device includes a base and two positioning mechanisms oppositely positioned on the base to position a workpiece. Each positioning mechanism includes a driver positioned on the base, a mounting member mounted on the base, a gear rack, a gear, and a positioning member. The mounting member defines a sliding groove. The gear rack slidably is received in the sliding groove and connected with the driver. The gear is rotatably connected with the mounting member and is meshed with the gear rack. The positioning member is fixedly-connected with the gear. The driver drives the gear rack to slide along the sliding groove to make the positioning member rotate and outstretch into an interior of the workpiece. The drivers drive two positioning members apply two opposite forces on the workpiece to positioning the workpiece.

主权项

1. A positioning device for positioning a workpiece, comprising:
a base; and two positioning mechanisms oppositely positioned on the base, each of the two positioning mechanisms comprising:
a driver positioned on the base;a mounting member movably mounted on the base adjacent to the driver, the mounting member defining a sliding groove with an end wall thereof being adjacent to the driver;a gear rack slidably received in the sliding groove, and connected to the driver;a gear rotatably connected to the mounting member, and meshed with the gear rack; anda positioning member non-rotatably connected to the gear, wherein the driver drives the gear rack to slide along the sliding groove to make the positioning member rotate and outstretch into an interior of the workpiece, when the gear rack resists against the end wall of the sliding groove, the driver drives the mounting member to move together with the positioning member, such that two positioning members of the two positioning mechanisms apply opposite forces on the workpiece to positioning the workpiece.