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AssigneeGehring Technologies GmbH + Co. KG
InventorsErwin BAUMGARTNER, Michael RACH
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The present invention relates to a honing tool (31) for working several separate bores arranged coaxially in series (17a, 17b, 17c) and with different diameters. The honing tool (31) comprises several cutting bar groups (3, 4, 5) arranged coaxially in series, wherein a cross section formed by radially extendable cutting bars (18) of a cutting bar group (3, 4, 5) differs from the cross section of at leas one other cutting bar group (3, 4, 5). The cutting bar groups (3, 4, 5) are constructed and arranged in such a manner that a through bore (17a, 17c) can be worked during a single work step by at least one first cutting bar group (3, 5) and a stepped bore (17b) can be worked by at least one second cutting bar group (4).
A honing tool for working several separate bores (17a, 17b, 17c) arranged coaxially in series and with different diameters, wherein the honing tool (31) comprises several cutting bar groups (3, 4, 5) arranged coaxially in series, wherein a diameter of a cutting bar group (3, 4, 5) of the several cutting bar groups (3, 4, 5), which diameter is formed by radially extendable cutting bars (18), differs from a corresponding diameter of at least one other cutting bar group (3, 4, 5) of the several cutting bar groups (3, 4, 5), characterized in that either a centering bar group (7, 9) is arranged in an axial direction to a free end of the honing tool (31) on at least one cutting bar group (3, 5), or a guide bar group (6, 8) is arranged directly adjacent opposite the free end of the honing tool (31) on the at least one cutting bar group (3, 4, 5), or both the centering bar group (7, 9) and the guide bar group (6, 8) are arranged accordingly.
A combination of two honing tools (31.1, 31.2) for working several separate bores (17a, 17b, 17c) arranged coaxially in series and with different diameters, wherein a first honing tool (31.1) comprises several cutting bar groups (3, 5) arranged coaxially in series, wherein a diameter of a cutting bar group (3, 5) of the several cutting bar groups (3, 4, 5), which diameter is formed by cutting bars (18) which can be radially extended, differs from a corresponding diameter of at least one other cutting bar group (3, 5) of the several cutting bar groups (3 ,4, 5), wherein the at least one cutting bar groups (3, 5) of a first honing tool (31.1) are designed and arranged in such a manner that at least one through bore (17a, 17c) can be worked by the at least one cutting bar group (3, 5), wherein a second honing tool (31.2) comprises a respective cutting bar group (4) of the several cutting bar groups (3, 4, 5), that two guide bar groups (6, 8) are provided coaxially and at an axial distance to the respective cutting edge group (4) and that the axial distance of the two guide bar groups (6, 8) corresponds to an associated axial distance of the several cutting bar groups (3, 5) of the first honing tool (31.1).
Dependencies are inferred from the claim text.