Press tooling for large gear hobbing

A large-scale gear and gear hobbing technology is applied in the field of pressing tooling for large-scale gear gear hobbing, which can solve the problems of low pressing efficiency, high labor intensity of workers, and inability to tighten bolts.

Active Publication Date: 2019-01-08
CHONGQING WANGJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using heavy cutting to process large gears, the workpiece to be processed is subjected to a large force, and it is necessary to apply a sufficient compressive force to the workpiece to prevent the displacement of the workpiece to cause gear hobbing failure. The extended sleeve tightens the bolt to compress the workpiece to be processed. Repeatedly tightening and loosening the bolt with the sleeve is labor-intensive for the workers, and the compression efficiency is also low. Due to the limited space of the machine tool, it cannot be used in a narrow space. Tighten the bolts

Method used

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  • Press tooling for large gear hobbing
  • Press tooling for large gear hobbing
  • Press tooling for large gear hobbing

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Embodiment Construction

[0018] see figure 1 and figure 2 , is a specific embodiment of a pressing tool for hobbing large gears. The pressing tool for large-scale gear hobbing includes a base 1, on which a central shaft 2 extending vertically upwards is fixed. In this embodiment, a stepped hole 7 is provided in the center of the base 1. The large-diameter end of the stepped hole is located at the lower end of the base, and the small-diameter end of the stepped hole is located at the upper end of the base. The lower end of the central shaft 2 is provided with a step 8, so that the central shaft forms a stepped shaft. The shoulder of the central shaft 2 It forms an axial limit with the shoulder of the stepped hole 7 of the base 1, and a counterbore can also be set at the center of the base. The screw rod passes through the counterbore of the base 1, so that the head of the bolt is located in the large diameter section of the stepped hole, and the screw rod of the bolt passes through the base and fits...

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Abstract

The invention relates to a pressing tool for a large gear hob. The pressing tool comprises a base, wherein a center shaft which extends vertically upward is fixedly arranged on the base, the lower end of the center shaft is movably sleeved with a support sleeve, the upper end of the center shaft is movably sleeved with a press block, a space interval for instilling a workpiece is reserved between the support sleeve and the press block, the lower end of the support sleeve is fixed with the periphery of the base, a locating seam allowance which is used for centering the workpiece is arranged at the upper end of the support sleeve, a hydraulic nut is connected to an axial section, above the press block, of the center shaft through threads, and the hydraulic nut presses the press block. The pressing tool for the large gear hob is suitable for pressing the workpiece when the operation space is small and the hob is effectively and heavily cut, and enough clamping pressing force and clamping efficiency can be effectively guaranteed.

Description

technical field [0001] The invention relates to the field of large gear processing, in particular to a pressing tool for hobbing large gears. Background technique [0002] When machining large hobbing gears, such as gears for large wind power gearboxes, the diameter of the gears usually exceeds 400mm, which has the characteristics of large size and large modulus. When processing such large-size, large-modulus gears, it is necessary to use heavy-cutting processing methods, using one or two cutters to hob the teeth to the full tooth depth, so that the processing efficiency of gears is high, and large gears can be processed quickly. However, when using heavy cutting to process large gears, the workpiece to be processed is subjected to a large force, and it is necessary to apply a sufficient compressive force to the workpiece to prevent the displacement of the workpiece to cause gear hobbing failure. The extended sleeve tightens the bolt to compress the workpiece to be processe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F23/06
Inventor 牛中磊
Owner CHONGQING WANGJIANG IND
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