Shaft milling key slot fixture

Abstract

The invention discloses a shaft milling keyway fixture, which comprises a bottom plate, static thimbles arranged on the bottom plate in sequence along the axial direction, two V-shaped positioning mechanisms and a moving thimble assembly; the static thimble is fixedly connected to the bottom plate; the moving thimble assembly It includes a support seat, a moving thimble and a driving device. The driving device controls the support seat to drive the thimble to move axially; the axis lines of the static thimble and the moving thimble are located on the same straight line, and the directions are opposite; the V-shaped positioning mechanism includes an adjustable V-shaped The positioning assembly and the pressing mechanism, the adjustable V-shaped positioning assembly includes a traversing bracket, a V-shaped block and a fine-tuning screw, the pressing mechanism includes a threaded column, a spring sleeved outside the threaded column, and a pressure threaded on the threaded column. Tightening plate and compression nuts for compressing the compression plate. This fixture has high clamping stability and high positioning accuracy. It can adapt to step-shaped rotating shafts of various sizes by adjusting the position of the V-shaped position. It can reliably ensure the accurate positioning of the shaft and ensure the machining symmetry of the key groove of the shaft.

Description

technical field [0001] The invention relates to a clamp, in particular to a shaft milling keyway clamp, which belongs to the technical field of clamps. Background technique [0002] Shaft parts are one of the most basic and important components in the machine, and its main function is to transmit movement and torque and support rotating parts. The key connection is widely used in the fixing and transmission of shaft parts because of its simple structure, reliable operation, and convenient disassembly and assembly. Keyway milling is a process of milling a keyway on the surface of a workpiece with a milling cutter. The workpiece needs to be clamped and milled with a milling cutter. During the processing, the accuracy of the keyway is required to be high. The fixture is mainly a device for clamping the workpiece. It is used to fix the processing object in the process of mechanical manufacturing so that it can occupy the correct position to accept the device for construction or...

AI Technical Summary

Problems solved by technology

The fixture is mainly a device for clamping the workpiece. It is used to fix the processing object in the process of mechanical manufacturing so that it can occupy the correct position to accept the device for construction or testing. When clamping the keyway of the workpiece with different diameters, if ordinary Flat-nose pliers need to re-adjust the symmetry between the keyway and the diameter of the workpiece, and since shaft parts are generally multi-stage stepped shafts composed of multiple cylinders with different diameters, the size of the clamp for clamping ends with different diameters must be It is specially designed according to the size of the workpiece, so it is time-consuming, laborious and inconvenient to operate, which reduces the work efficiency. Therefore, it is necessary to specially design a special keyway milling fixture for shaft parts.

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