Safety Braking Device with Two Braking Stages
AssigneeRobert Bosch GmbH
InventorsJuergen Wiker, Daniel Dennis, Florian Esenwein
Life of this patent
Estimating the term…
Abstract
A safety braking device for a machine tool for braking a processing tool driven by means of an electric motor via an output unit, more particularly an output shaft, includes at least one braking device which is provided to halt rotation of the output unit in a braking process. The braking device has at least a first braking stage and a second braking stage. The disclosure further relates to a machine tool having the safety braking device and to a method for operating a safety braking device.
Claims16
A safety braking apparatus for a machine tool for braking a cutting tool which is driven by means of an electric motor via an output unit, comprising:
- at least one braking apparatus comprising at least a first braking stage and a second braking stage, the at least one braking apparatus configured to, in a braking operation, brake, or halt a rotation of the output unit.
A hand-held machine tool, comprising:
- an output unit
- an electric motor configured to drive a cutting tool via the output unit and
- a safety braking apparatus comprising:
- at least one braking apparatus comprising at least a first braking stage and a second braking stage, the at least one braking apparatus configured to, in a braking operation, brake or halt a rotation of the output unit.
A method for operating a safety braking apparatus having at least one braking apparatus configured to, in a braking operation, brake or halt a rotation of an output unit of a machine tool via which an electric motor of the machine tool drives a cutting tool, the method comprising:
- in response to detecting an approachment of a user to the cutting tool, braking or halting the rotation of the output unit is braked, in particular halted, at least substantially by via a first braking stage of the at least one braking apparatus and,
- in response to detecting a further approachment of the user to the cutting tool or a touching of the cutting tool by the user, braking or halting the rotation of the output unit at least substantially via a second braking stage of the braking apparatus.
Dependencies are inferred from the claim text.