- Patent Title: Apparatus for metal-cutting machining of wear-affected bit holders of road milling machines, and use of an apparatus for overhauling such wear-affected bit holders
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Application No.: US15826794Application Date: 2017-11-30
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Publication No.: US11273502B2Publication Date: 2022-03-15
- Inventor: Stefan Abresch , Thomas Lehnert , Markus Reindorf , Cyrus Barimani
- Applicant: Wirtgen GmbH
- Applicant Address: DE Windhagen
- Assignee: Wirtgen GmbH
- Current Assignee: Wirtgen GmbH
- Current Assignee Address: DE Windhagen
- Agency: Patterson Intellectual Property Law, PC
- Agent Lucian Wayne Beavers
- Priority: DE102016224606.2 20161209
- Main IPC: B23C3/36
- IPC: B23C3/36 ; B24B23/08 ; B24B7/16 ; B23Q9/00 ; B23C3/00 ; B24B27/00

Abstract:
An apparatus for metal-cutting machining of wear-affected bit-head-proximal end regions of bit holders of road milling machines encompasses: a rotary actuator having an output member rotating around an actuator rotation axis; at least one material-removing tool, rotatable around a tool rotation axis, which is coupled or couplable to the output member so as to rotate together; a positioning arbor, extending along an arbor axis, which is embodied for introduction into a bit receptacle opening of a bit holder and which comprises an abutment segment, located radially remotely from the arbor axis and facing away from the arbor axis in a direction having a radial component, which is embodied for abutment against an inner wall of the bit receptacle opening. A material-removing region, populated with cutting edges, of the material-removing tool is arranged between the positioning arbor and the output member.
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