Patent · US Active

Method for controlling and regulating a machine tool and handle for machine tool

US12311517B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Stefan Ringler · Schwabmühlhausen, DE
Ehsan Mahdizadeh · Kaufering, DE
Steffen Geiger · Asperg, DE

Key dates

Filing date	Nov 4, 2020
Grant date	May 27, 2025
Priority date	—
Expiry date	Nov 4, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB25D2250/265
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

Method for the open-loop and closed-loop control of a power tool, in particular a chipping hammer, having a drive, a control device, a sensor device, a transmission device and a handle apparatus, wherein the handle apparatus contains a lever element with a signal transmitter, said lever element being pivotable relative to the sensor device. The method includes: sensing a first and second position of the signal transmitter by the sensor device; determining an acceleration of the signal transmitter from the first position to the second position by the control device; setting a first rotational speed for the drive by the control device for the output of a first impact energy value of the transmission device when the determined acceleration reaches a first predetermined threshold value or setting a second rotational speed for the drive by the control device for the output of a second impact energy value of the transmission device when the determined acceleration reaches a second predetermined threshold value. A handle apparatus on a power tool, in particular a chipping hammer, is also provided.

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