Tools and Cutting Inserts for Power Grinding

Abstract

The invention concerns a power skiving tool of the type that includes a basic body (7), which is equipped with a plurality of replaceable cutting inserts (8), by means of which chips can be carved or peeled out of a workpiece with the purpose of forming, for instance, teeth. According to the invention, the individual cutting insert (8) is formed with only one cutting edge (15) and has a rear end in the form of a shoulder surface (16), against which an adjusting mechanism (27) is pressed for the fine adjustment of the radial position of the cutting insert in relation to the basic body. On the under side of the cutting insert, there is in addition control means, e.g. a serration connecting surface, which interacts with the corresponding control means in the appurtenant seat (9) in the basic body. In addition, the invention concerns a power skiving cutting insert as such.

Description

technical field [0001] In a first aspect, the invention relates to a power skiving tool of the type comprising, on the one hand, a base body having a peripheral edge, the base body lying on a reference plane extending perpendicularly to a central axis wherein the periphery is rotationally symmetric about the central axis, and the periphery comprises a plurality of tangentially spaced seats each comprising a bottom formed in the appropriate periphery and extending from the periphery radially protruding protrusions, and a hole with a female thread opening in the bottom; and on the other hand, a plurality of replaceable cutting inserts, each of which includes an upper side, a lower side, a An endless peripheral surface extending between the upper side and the lower side, and a through hole extending between the upper side and the lower side, each cutting insert has a length extension consisting of a front end and a rear end An extended longitudinal axis is defined, and the cutti...

AI Technical Summary

Problems solved by technology

[0006] However, the disadvantage of solid power grinding tools is that they can only be realized successfully in small embodiments, more precisely with a diameter of up to 150 mm and a maximum of about 10 cutting edges

This leads to the risk that the fine adjustment of the cutting insert is damaged, i.e. if the used cutting edge (and the clearance surface of the cutting edge) which is turned back towards the adjustment mechanism is damaged, for example by chipping or deformation of the plastic material due to a large amount of heat. damage

That is, even a modest deformation such as about 0.1 mm would make predictable fine-tuning down to 0.001 mm impossible if possible damage propagated to the clearance surface

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