A gear hobbing fixture for clamping multiple large ring gear parts

Abstract

The invention discloses a hobbing clamp for clamping a plurality of parts with big gear rings. The hobbing clamp for clamping the parts with the big gear rings comprises a pressing portion and a centering portion, wherein the centering portion comprises a base, a first spring, a locating sleeve, force transmission blocks, a lower pull rod and the like, a support is arranged on the top surface of the base, the support is sleeved with a supporting disk, the pressing portion comprises an upper pull rod and a press plate, the upper pull rod is sleeve with a disk spring and a pressing sleeve in sequence from top to bottom, the disk spring and the pressing sleeve are sleeved with a bushing in a spaced mode, a supporting plate is arranged at the bottom of the press plate, the top surface of the supporting plate is a big-end-down conical surface, the conical surface is attached to the bottom surface of the press plate, the lower end of the supporting plate is fixedly sleeved with a gland, the lower end of the upper pull rod is provided with a T-shaped portion, and the T-shaped portion penetrates through a small-diameter section of a center hole of a taper sleeve and a center hole of a reset spring, and then is clamped into a large-diameter section of a cylindrical hole formed by inner surfaces of all the force transmission blocks. According to the hobbing clamp for clamping the parts with the big gear rings, centering of workpieces with big gear rings can be well carried out through expansion blocks, the workpieces can be tightly pressed at the same time, and centering accuracy can be ensured.

Description

technical field [0001] The invention belongs to the field of fixtures, in particular to a hobbing fixture for clamping a plurality of large ring gear parts. Background technique [0002] The large ring gear part is a widely used part. Generally, multiple large ring gear parts (that is, the workpiece G) are placed outside the mandrel during gear hobbing, and the inner holes of each large ring gear part are matched with the mandrel. Then press the top surface of the uppermost large ring gear part with a pressure plate, so that multiple large ring gear parts are hobbed at the same time. [0003] Due to the large elastic deformation of the large ring gear parts in the free state, and the deformation size and shape of each large ring gear part are inconsistent, and the inner holes of each large ring gear part are matched with the mandrel clearance, which causes the traditional The centering accuracy of the fixture on the large ring gear part is poor, not only it is very difficul...

AI Technical Summary

Problems solved by technology

[0003] Due to the large elastic deformation of the large ring gear parts in the free state, and the deformation size and shape of each large ring gear part are inconsistent, and the inner holes of each large ring gear part are matched with the mandrel clearance, which causes the traditional The centering accuracy of the fixture on the large ring gear parts is poor, not only is it very difficult to clamp the workpiece G, but also the hobbing accuracy is difficult to be reliably guaranteed

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