Patent · US Active

Reversing mode for core drilling systems

US10583499B2 · kind B2 · utility

0Cited by

6References

15Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Tobias Drexl · Weil, DE
Andreas Hartig · Augsburg, DE
Thomas Schmalholz · Kaufbeuren, DE
Bernhard Link · Schwabbruck, DE
Goran Golubovic · Munich, DE

Key dates

Filing date	Apr 22, 2016
Grant date	Mar 10, 2020
Priority date	—
Expiry date	Jun 12, 2036

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23B2270/54
WIPO fieldMachine tools
WIPO sectorMechanical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.