Patent · US Active

Control method and portable power tool

US10906166B2 · kind B2 · utility

0Cited by

2References

7Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Carsten Peters · Dresden, DE
Helene Wesseler · Munich, DE
Markus Hartmann · Mauerstetten, DE
Klaus-Peter Bohn · Gams, CH
Thilo Hammers · Geltendorf, DE
Bastian Pluemacher · Pfänderhof, DE

Key dates

Filing date	Dec 6, 2016
Grant date	Feb 2, 2021
Priority date	—
Expiry date	Jun 14, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/221
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A control method for a bore-chiseling portable power tool for machining a substrate by a drill bit includes superimposing a periodic striking on the drill bit at an impact rate and a rotating of the tool holder at a rotational speed in a rotational direction, identifying a material of the substrate being machined by the drill bit by a sensor, adjusting the rotational speed and/or the rotational direction to a first rotational speed and a first rotational direction when the identified material is an iron-based material, and adjusting the rotational speed and/or the rotational direction to a second rotational speed and a second rotational direction when the identified material is a mineral material. The first rotational speed is less than the second rotational speed and the first rotational direction is counter-clockwise and the second rotational direction is clockwise.

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