Invention Grant
- Patent Title: Reversing mode for core drilling systems
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Application No.: US15569354Application Date: 2016-04-22
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Publication No.: US10583499B2Publication Date: 2020-03-10
- Inventor: Tobias Drexl , Andreas Hartig , Thomas Schmalholz , Bernhard Link , Goran Golubovic
- Applicant: Hilti Aktiengesellschaft
- Applicant Address: LI Schaan
- Assignee: Hilti Aktiengesellschaft
- Current Assignee: Hilti Aktiengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Davidson, Davidson & Kappel, LLC
- Priority: EP15165313 20150428
- International Application: PCT/EP2016/059020 WO 20160422
- International Announcement: WO2016/173943 WO 20161103
- Main IPC: B23B51/04
- IPC: B23B51/04 ; B28D7/00 ; B23B49/00 ; B28D1/04 ; B23B35/00 ; B23Q5/20

Abstract:
A control method for the use of a core drilling system including a core drill and a feed device for driving the core drill along a machine holding device. The method includes the steps of determining the end of a core drilling operation on the basis of reaching a predetermined threshold value for at least one corresponding predefined drilling parameter; and of selecting a reversing mode for retracting a drilling tool out of a borehole at a reversing rotational speed which corresponds to a multiple of a predetermined tapping rotational speed of the drilling tool at the beginning of the core drilling operation.
Public/Granted literature
- US20180297126A1 REVERSING MODE FOR CORE DRILLING SYSTEMS Public/Granted day:2018-10-18
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