Universal-joint holder excircle grinder

Abstract

The invention discloses a universal-joint holder excircle grinder which comprises a bottom plate. Damping devices are arranged on four corners of the lower end of the bottom plate; first placement boxes are fixed to two sides of the upper end of the bottom plate; auxiliary rotating devices are arranged in the first placement boxes; first support plates are fixed to one opposite sides of the two first placement boxes; third through holes are formed in the first support plates; second placement boxes are arranged in the third through holes in a penetrating way; clamping devices are arranged in the second placement boxes; one sides of the auxiliary rotating devices are fixed to one ends of the clamping devices; adjusting devices are arranged in the clamping devices; two second support platesare fixed onto the bottom plate; and a first fixed block is jointly fixed to the upper ends of the two second support plates. According to the universal-joint holder excircle grinder provided by the invention, through transforming the universal-joint holder excircle grinder, the problems that a holder cannot be sufficiently and fixedly clamped and is inconvenient to rotate and grind auxiliarily are solved; and in addition, a cutting tool is adjusted to a certain extent, so that the universal-joint holder excircle grinder is convenient to use and suitable to be popularized.

Description

technical field [0001] The invention relates to the technical field of cylindrical grinding machines, in particular to a cylindrical grinding machine for a universal joint cage. Background technique [0002] The grinding accuracy of the outer circle of the universal joint cage is the key to determining the product quality, and the key to determining the accuracy of the outer circle of the cage is the grinding equipment. Due to the special structure of the cage, the grinding of its outer circle requires special equipment. The existing cylindrical grinding equipment with a cage is composed of a body, a fixed plate, a workpiece support frame, a workpiece bracket, a grinding wheel, and a workpiece top frame, and the fixed plate, the workpiece bracket, the grinding wheel, and the workpiece top frame are fixed. Installed on the fuselage, the workpiece rest is fixedly installed in the end face of the fixed plate. During grinding, the cage is press-fitted on the workpiece support ...

AI Technical Summary

Problems solved by technology

Its main disadvantage is: the workpiece top frame uses a cylindrical contact point welded with a hard alloy material at the end of the ejector rod to contact the outer circular surface of the cage. During the high-speed rotation of the cage, the contact point of the workpiece top frame will be worn. At the same time, the outer circular surface is ground by the grinding wheel, which reduces the contact force between the workpiece top frame and the cage, and affects the grinding accuracy.

Moreover, during the grinding process, the cylindrical contact point of the cemented carbide material at the end of the top frame of the workpiece will scratch the outer surface of the cage, reducing the surface grinding accuracy. The existing cylindrical grinding machine cannot correct the cage Fully fixed clamping, and inconvenient to rotate, auxiliary grinding, can not move the tool conveniently, and play a certain shock absorbing device during the movement of the device

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