Fixture for shaft keyway processing

Abstract

The invention discloses a fixture for shaft keyway processing, which comprises a bottom plate, a fixed V-shaped positioning block fixedly connected to the bottom plate, an adjustable V-shaped positioning assembly slidably connected to the bottom plate, and a fixed V-shaped positioning block arranged on the bottom plate. And the two pressing mechanisms on the adjustable V-shaped positioning block, the limiting plate arranged on one side of the bottom plate and the thimble assembly arranged on the other side of the bottom plate relative to the limiting plate; the limiting plate is fixed by screws Connected to the bottom plate; the thimble assembly includes a support seat, a thimble bracket, a thimble and a transmission screw, and the thimble can be adjusted to move axially and move up and down. This fixture has high clamping stability and high positioning accuracy. It can be adapted to step-shaped shafts of various sizes by adjusting the position of the adjustable V-shaped positioning component, which can reliably ensure the accurate positioning of the shaft and ensure the symmetry of the machining of the key groove of the shaft. Spend.

Description

technical field [0001] The invention relates to a fixture, in particular to a fixture for machining shaft key grooves, and belongs to the technical field of fixtures. 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 ...

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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