公开(公告)号：US10414036B2

公开(公告)日：2019-09-17

申请号：US15528216

申请日：2015-11-17

Applicant: Hilti Aktiengesellschaft

Inventor： Roland Schaer ,  Antonios Draganis ,  Peter Hricko ,  Franz Moessnang ,  Erwin Manschitz

IPC: B25D16/00 ,  B25F5/00 ,  B23Q11/00 ,  B23Q11/04 ,  B25D11/00 ,  B23Q17/22

Abstract: The control method for a hammer drill (1) provides the following steps. During basic operation, the motor (5) rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder (2) and to drive the hammer mechanism (6) with a nominal striking power. The torque coupling (21) is monitored with the aid of a sensor (26). If a disengagement of the torque coupling (21) occurs, the striking power of the hammer mechanism (6) is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (21), and the torque coupling (21) is driven. When the disengagement of the torque coupling (21) ends, the striking power of the hammer mechanism (6) is increased to the nominal striking power and the torque coupling (21) is driven at the operating speed for the drilling operation with chiseling action.

公开(公告)号：US10222784B2

公开(公告)日：2019-03-05

申请号：US15106392

申请日：2014-12-17

Applicant: Hilti Aktiengesellschaft

Inventor： Tobias Drexl ,  Ralf Pfeiffer ,  Roland Schaer ,  Dieter Profunser

IPC: G05B19/042 ,  G05B19/4093 ,  G05B19/416

Abstract: A method for controlling a device system is disclosed, and the device system includes a tool device and a motorized advancing apparatus during the machining of a workpiece composed of a first material and a second material different from the first material. The method includes machining the workpiece by the device system initially in a first operating mode with first machining parameters that are stored for the first material. After the start of the machining of the workpiece in the first operating mode, the method includes measuring and storing a first machining progress of the tool device as a reference value. During the machining of the workpiece in the first operating mode, the method also includes regularly measuring and comparing with a first threshold value a current machining progress of the tool device.

公开(公告)号：US10688614B2

公开(公告)日：2020-06-23

申请号：US16070565

申请日：2017-01-24

Applicant: Hilti Aktiengesellschaft

Inventor： Roland Schaer

IPC: B23Q11/00 ,  B25D16/00 ,  B25F5/00 ,  B23Q11/04

Abstract: A control method for a power tool for rotary tools comprises rotating a tool holder continuously about a working axis by a rotary drive. A rotary movement of a handle about the working axis is sensed by a motion sensor. A first angle of rotation of the handle is estimated by a first motion estimator, wherein rotary movements beneath a limit value are discounted. A second angle of rotation of the handle is estimated by a second motion estimator, wherein rotary movements beneath the limit value are taken into account. A measure for reducing the torque output of the rotary drive is activated when the first angle of rotation exceeds a first triggering threshold (A1), and when the second angle of rotation exceeds a second triggering threshold (A2) and at the same time a power output of the rotary drive exceeds a power threshold (L).

公开(公告)号：US10675747B2

公开(公告)日：2020-06-09

申请号：US15528280

申请日：2015-11-17

Applicant: Hilti Aktiengesellschaft

Inventor： Manuel Gut ,  Roland Schaer ,  Michael Wierer ,  Thomas Kinkeldei

IPC: B25F5/00 ,  B25D16/00 ,  B23Q11/00 ,  B25F5/02

Abstract: A control method is provided for a hand-held power tool (1), which includes a motor (5) for rotationally driving a tool holder (2) about a working axis (12), including the following steps: detecting a rotary motion of the hand-held power tool (1) about the working axis (12); detecting a rotary or pivoting motion about a transverse axis (18) extending transversely to the working axis (12); triggering a safety function for reducing the torque output of the motor (5) when the rotary motion about the working axis (12) exceeds a limiting value, and suppressing the safety function when the rotary or pivoting motion about the transverse axis (18) is greater than a threshold value.

公开(公告)号：US20170320205A1

公开(公告)日：2017-11-09

申请号：US15528216

申请日：2015-11-17

Applicant: Hilti Aktiengesellschaft

Inventor： Roland Schaer ,  Antonios Draganis ,  Peter Hricko ,  Franz Moessnang ,  Erwin Manschitz

IPC: B25D16/00

CPC classification number: B25D16/00 ,  B23Q11/0092 ,  B23Q11/04 ,  B23Q17/22 ,  B25D11/005 ,  B25D16/006 ,  B25D2211/068 ,  B25D2250/035 ,  B25D2250/165 ,  B25D2250/201 ,  B25D2250/221 ,  B25F5/001

Abstract: The control method for a hammer drill (1) provides the following steps. During basic operation, the motor (5) rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder (2) and to drive the hammer mechanism (6) with a nominal striking power. The torque coupling (21) is monitored with the aid of a sensor (26). If a disengagement of the torque coupling (21) occurs, the striking power of the hammer mechanism (6) is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (21), and the torque coupling (21) is driven. When the disengagement of the torque coupling (21) ends, the striking power of the hammer mechanism (6) is increased to the nominal striking power and the torque coupling (21) is driven at the operating speed for the drilling operation with chiseling action.

公开(公告)号：US11027389B2

公开(公告)日：2021-06-08

申请号：US16314438

申请日：2017-06-22

Applicant: Hilti Aktiengesellschaft

Inventor： Michael Wierer ,  Roland Schaer ,  Philipp Lorenz

IPC: B23Q11/00 ,  F16D59/02 ,  F16D121/22

Abstract: A handheld power tool includes a tool holder for holding a tool, an electric motor, a shaft connecting the tool holder and the electric motor, and a protective device for stopping the tool holder in an uncontrolled situation. The protective device includes a sensor for detecting the uncontrolled situation, a switchable current source and a normally closing magnetic brake. The switchable current source outputs a first current not equal to zero in response to signals of the sensor if an uncontrolled situation is not detected; the current source does not output a current or outputs a second current different from the first current if an uncontrolled situation is detected. The normally closing magnetic brake engages on the shaft and does not apply a torque to the shaft when energized by the first current. The normally closing magnetic brake applies a torque counteracting the rotational movement of the shaft when not energized or when energized by the second current.

公开(公告)号：US20180043521A1

公开(公告)日：2018-02-15

申请号：US15528231

申请日：2015-11-17

Applicant: Hilti Aktiengesellschaft

Inventor： Franz Moessnang ,  Antonios Draganis ,  Roland Schaer ,  Peter Hricko ,  Erwin Manschitz ,  Bernd Gillmeier

IPC: B25F5/02 ,  B23Q5/10 ,  B23D59/00

CPC classification number: B25F5/028 ,  B23D59/001 ,  B23Q5/10 ,  B25D2250/221 ,  B25F5/00 ,  B25F5/025

Abstract: A hand-held power tool (1) includes a tool holder (2) for holding a tool on a working axis (11) and a motor (5) for rotationally driving the tool holder (2) about the working axis (11). The motor (5) is situated in a power-tool housing (16) and a handle (9) is fastened on the power-tool housing (16) for guiding the hand-held power tool (1) during operation. A rotary motion sensor (15) detects a rotary motion of the power-tool housing (16) about the working axis (11). A monitor (19) ascertains a holding force based on an amplitude of the rotary motion in a frequency range between 0.4 Hz and 4 Hz. A safety device (13) reduces a torque output to the tool holder (2) when the detected rotary motion exceeds a limiting value, the limiting value being set as a function of the holding force.