Jig for machining of columnar workpieces

Abstract

The invention discloses a jig for machining of columnar workpieces. The jig comprises a rectangular bottom plate, a backing stand, a V-shaped cushion block, a compression head and a hydraulic cylinder. A stand plate is fixedly disposed on the upper side of one end of the rectangular bottom plate; the V-shaped cushion block is fixedly mounted on the stand plate; a U-shaped support is fixedly mounted on the upper side of the other end of the rectangular bottom plate; the hydraulic cylinder is fixedly disposed on the upper side of the U-shaped support; a piston rod of the hydraulic cylinder is fixedly connected with one end of a push rod; the compression head is fixedly disposed at the other end of the push rod; the push rod is slidably mounted on a guide block; the guide block is fixedly mounted on the upper side of the middle of the rectangular bottom plate; and the backing stand is fixedly disposed on the upper side of the rectangular bottom plate and below the V-shaped cushion block. The jig for machining of the columnar workpieces has the following characteristics of being reasonable in design, high in automation and intelligent level, easy and convenient to operate, low in labor intensity, high in production efficiency, long in service life and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing and relates to a simple clamp, in particular to a work clamp for clamping a cylindrical workpiece. Background technique [0002] At present, during the machining of columnar workpieces, the most commonly used clamping tool is a three-jaw chuck because the outer contour of the columnar workpiece has a certain curvature. The three-jaw chuck is composed of a chuck body, movable jaws and jaw driving mechanism. Under the guide part of the three claws on the three-jaw chuck, there are threads that mesh with the plane threads on the back of the bevel gear. When the small bevel gear is turned with a wrench through the square hole, the bevel gear rotates, and the plane threads on the back simultaneously Drive the three jaws to approach or withdraw from the center to clamp workpieces with different diameters. However, if the three-jaw chuck is used for a long time, the chuck will wear out, an...

AI Technical Summary

Problems solved by technology

Under the guide part of the three claws on the three-jaw chuck, there are threads that mesh with the plane threads on the back of the bevel gear. When the small bevel gear is turned with a wrench through the square hole, the bevel gear rotates, and the plane threads on the back simultaneously Drive the three jaws to approach or withdraw from the center to clamp workpieces with different diameters. However, if the three-jaw chuck is used for a long time, the chuck will wear out, and the three jaws will also appear bell-mouthed, making the three jaws deviate from the chuck. In addition, when using the three-jaw chuck, the operator must manually clamp the workpiece, which cannot be done automatically. The operator has high labor intensity, low degree of automation, and low production efficiency.

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