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Broaching tool and method for machining the surfaces of bores

A technology of cutting processing and cutting head, which is applied in the field of broaches and can solve problems such as long processing time

Inactive Publication Date: 2008-08-27
MAPAL FAB FUR PRAZIONSWERKZEUGE DR KRESS KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, for some purpose hole surfaces, the processing time for making a certain groove is too long

Method used

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  • Broaching tool and method for machining the surfaces of bores

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Embodiment Construction

[0010] The broach 1 has a base body 3 and a cutting head 5 , which is mounted eccentrically and rotatably in the base body 3 .

[0011] FIG. 1 shows the part of the base body 3 which accommodates the cutting tip 5 . On the broken end of the base body opposite the tool head 5 in the figure, for example, a tool shaft can be provided, which serves as the connection of the base body 3 to the machine tool.

[0012] However, it is also possible to connect the base body 3 to the machine tool via an adapter, plug-in or the like. The machine tool is used to rotate the base body 3 while machining the hole surface and producing at least one groove in the hole surface.

[0013] During machining of the workpiece, the base body 3 therefore rotates about its central axis 7 , which coincides with the central axis of the bore surface to be machined.

[0014] The basic body has a base element 9 which is provided with a recess 11 in which a bearing arrangement 13 can be inserted. This bearing...

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Abstract

The invention relates to a broaching tool for machining the surfaces of bores in order to introduce at least one groove. Said tool comprises at least one cutting head (5) with at least one blade (69) and a base body (3) that supports the cutting head (5). The tool is characterised in that the cutting head (5) is mounted eccentrically in the base body (3) so that it can be displaced in a rotative manner and that the central axis (65) of the cutting head (5) forms an acute angle ( alpha ) with the central axis (7) of the base body (3).

Description

technical field [0001] The invention relates to a broach for cutting the surface of a hole, i.e. for making at least one groove, which broach comprises a cutting head with at least one cutting edge and a base body supporting the cutting head, and the invention relates to a A method for machining the surface of a hole. Background technique [0002] Broaches and methods for the machining of bore surfaces are known. They are used for a bore surface provided in at least one groove, said groove preferably having a helix, for example a 20° helix. The groove therefore extends on an imaginary helix with a helix angle of, for example, 20°, measured along the length of the hole to be produced. Known broaches perform an oscillating movement, also referred to as a pivoting movement, during such machining, which is carried out by a tool shaft that accommodates the broach. In carrying out the method for machining a bore surface, the broach is inserted in the axial direction into the bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D37/16B23D43/00B23D43/06
CPCB23D43/005Y10T409/40105Y10T409/402975Y10T407/15Y10T409/400175
Inventor D·克雷斯F·黑贝勒
Owner MAPAL FAB FUR PRAZIONSWERKZEUGE DR KRESS KG
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