A gripper for gripping a cylindrical workpiece

Abstract

A grasping and holding device for grasping and holding cylindrical workpieces comprises clamping rings and driving assemblies capable of stretching out and drawing back synchronously; the driving assemblies drive the clamping rings to stretch out and draw back synchronously; each clamping ring is of a ring-shaped structure formed by connecting a plurality of hinged connection units end to end through connecting rotation shafts; each hinged plate unit is of a v-shaped structure formed by a <-shaped rod and a rotating shaft, and the middle bent portions of every two <-shaped rods are hinged through the corresponding rotating shaft; the two ends of each <-shaped rod are hinged with the <-shaped rod at the corresponding position in the adjacent hinged connection unit through the corresponding connecting rotation shaft; each driving assembly is of an X-shaped structure formed by driving rods and a driving rotation shaft; and every two driving rods rotate around the corresponding driving rotation shaft; and one ends of every two driving rods are hinged to the two rotating shafts of the adjacent hinged connection units. The grasping and holding device for grasping and holding the cylindrical workpieces changes that an existing clamp only has a singular clamping function, and can perform center alignment positioning on the cylindrical workpieces.

Description

technical field [0001] The invention relates to the field of fixture technology, in particular to a gripper for gripping a cylindrical workpiece. Background technique [0002] The grippers in the prior art are generally open grippers, that is, open to grasp objects like a human hand. This type of gripper only has the function of grasping and transferring the object, and does not further limit the grip on the object, and the object is easily affected by the inertia of acceleration or deceleration during the transfer process. If the gripper The grasping center does not coincide with the center of the article, and the article is very easy to drop, which will greatly affect the production efficiency of the processing, and easily damage the grasped article. [0003] In addition, for grippers that only have a gripping effect, after the object is grasped and transferred, the placement of the object is only in a general orientation, and the center of the object cannot be aligned wi...

AI Technical Summary

Problems solved by technology

This type of gripper only has the function of grasping and transferring the object, and does not further limit the grip on the object, and the object is easily affected by the inertia of acceleration or deceleration during the transfer process. If the gripper The gripping center does not coincide with the center of the object, and the object is very easy to fall, which will greatly affect the production efficiency of the processing, and it is easy to damage the gripped object

[0003] In addition, for grippers that only have a gripping effect, after the object is grasped and transferred, the placement of the object is only in a general orientation, and the center of the object cannot be aligned with the center of the desired placement, such as placing a columnar workpiece When grasping and transferring and installing in the corresponding mounting hole, after the columnar workpiece is transferred, the worker needs to position and install the workpiece and the mounting hole, the labor intensity of the worker is high, and the processing efficiency is low

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