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Tool and machine for machining operations posing an inverse operation risk

A technology for machining machine tools and machining tools, which is used in the field of machining and manufacturing workpieces, and can solve the problems of debris, tool wear, and tool damage at the cutting edge of the tool.

Active Publication Date: 2010-12-22
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] This is an improper use of the tool which can lead to premature tool wear or even immediate tool damage in the form of splinters on the cutting edge of the tool

Method used

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  • Tool and machine for machining operations posing an inverse operation risk
  • Tool and machine for machining operations posing an inverse operation risk
  • Tool and machine for machining operations posing an inverse operation risk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 The schematically represented processing machine tool 1 is adapted to rotate a cylindrical workpiece 2 comprising a prismatic surface 3 about an axis 4 . The workpiece 2 is prismatic and the normal 5 of the surface 3 at the intersection with the axis 4 is not parallel to this axis 4 .

[0030] The machine tool 1 also controls the tool rest 6 to move in directions 8 and 9 , and the tool 7 is fixed on the tool rest 6 .

[0031] The machine tool 1 is suitable for machining a surface with a constant feed depth on a prismatic surface 3 by means of a tool 7 . To this end, in addition to advancing the workpiece 2 in direction 8 , the machine tool 1 synchronizes the position of the tool 7 with the angular position of the workpiece 2 in direction 9 to follow the shape of the surface 3 and to impart the required depth of infeed to the surface 3 .

[0032] figure 2 and 3 are suitable for forming figure 1 Side view and front view of prior art tool 7A of tool 7 ( fig...

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PUM

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Abstract

The invention relates to a tool (7B) comprising a cutting edge (24) that is located at the junction between a rake face and a flank face (23), said rake face having a front facet (26) that is intended to be moved transversely to the relative direction of movement (29, 30) between the piece (2) and the tool (7B) during machining operations and an inclined facet (27) that is disposed between the front facet (26) and the flank face (23). The above-mentioned cutting edge (24) is located at the junction between the inclined facet (27) of the rake face and the flank face (23).

Description

technical field [0001] The invention relates to the field of machining and manufacturing workpieces. [0002] The invention relates in particular to tools and machine tools for performing machining operations on workpieces with the risk of travail à rebours. Background technique [0003] The danger of such reverse machining is encountered, for example, when carrying out a turning (tournage) machining method, which is used to machine a surface on a workpiece driven to rotate about an axis, although the surface is aligned with the axis of rotation. Transversely, the surface is prismaticized with respect to the axis of rotation by a central angle. [0004] In fact, since these methods can only machine shapes symmetrical to the axis of rotation of the workpiece, when it is desired to produce an asymmetrical surface under these conditions, conventional turning methods cannot be used. One therefore resorts to methods in which the workpiece is driven in rotation while the machini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B27/14
CPCB23B2215/40B23B2200/0461B23B2200/283B23B2226/31B23B27/145Y10T408/175Y10T407/23
Inventor A·古罗
Owner ESSILOR INT CIE GEN DOPTIQUE