A clamping device and clamping method for shaft products

Abstract

A shaft product clamping device comprises a base and a workboard, wherein a groove is formed in the middle of the upper surface of the workboard and used for fixedly mounting a positioning bar; the positioning bar extends in the front-and-back direction; at least three sets of hold-down components are distributed on each of the left side and the right side of the positioning bar; each hold-down component particularly comprises a compressing block, a V-shaped pressing block, a cylinder pull rod and a clamping cylinder; a set of positioning component is arranged on the outer side of each of the hold-down components on the two sides of the positioning bar; each positioning component particularly comprises a positioning and supporting plate, a pneumatic fixing plate, an auxiliary plate, a jacking rod, a wedge block and a positioning cylinder. The shaft product clamping device limits four degrees of freedom in the vertical and horizontal directions through the V-shaped positioning blocks, automatically aligns to the axis, achieves automatic alignment of positioning surfaces of a processed product in the Y direction and the Z direction through 45-degree V-shaped grooves and locates the cylindrical reference surface through the V-shaped grooves; pneumatic clamping is synchronously completed through a fixing and positioning point and a sloping block movement device in the X direction, so that not only is the requirement for processing a plurality of products by a pair of clamps satisfied, but also the repeated clamping frequency is reduced.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a clamping device and a clamping method for shaft products. Background technique [0002] Machinery manufacturing is inseparable from metal cutting machine tools, and machine tool fixtures are one of the indispensable important process equipment to ensure the quality of machining, improve production efficiency, reduce labor intensity, reduce excessive requirements for workers' skills, and realize the automation of production process. Machine tool fixtures are widely used in the manufacturing industry, and the use of a large number of special machine tool fixtures provides the necessary conditions for mass production. In the past, after the line was drawn on the workpiece, the four-jaw chuck was used to install it according to the line, and then the inner hole was processed. During the correction process, when the two claws clamped on the cylindrical surface are adjusted, ...

AI Technical Summary

Problems solved by technology

[0004] In the lateral milling of rotary products, the commonly used milling clamping method is to use V-shaped blocks for positioning and clamping. However, this process method is only suitable for clamping a single product, and it is manually operated. Other existing clamping methods Methods Two-way flat-nose pliers are used for positioning and clamping, or a three-jaw self-centering chuck is used for clamping

These clamping and positioning methods are difficult to guarantee the accuracy in terms of position and symmetry, and uneven force will cause deformation, long clamping time and low efficiency

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