Knockout tools
AssigneeBlack & Decker Inc.
InventorsJose Henrique Waechter, Andre Felipe Breternitz de Souza, Marco Lourenco
Life of this patent
Estimating the term…
Abstract
Power-driven knockout tools are provided, including knockout tool accessory devices for power-driven tools. A plurality of different die sets can be coupled to the knockout tools, for forming openings through rigid plate or sheet material. The knockout tool portion of the tools may include a transmission that provides for sufficient speed reduction and corresponding increase in output torque from an input speed/torque associated with a rotary force input to the transmission to an output speed and an output torque for the pulling of a punch portion of the die set through the rigid sheet or plate material.
Claims20
A knockout tool, comprising:
- a housing;
- a motor received in the housing;
- a transmission received in the housing and coupled to the motor;
- a driving member at least partially received in the housing and configured to be rotatably driven about a first axis by the motor and transmission, the driving member including a threaded first portion;
- and
- a driven member at least partially received in the housing and configured to be axially moveable along a second axis parallel to and offset from the first axis, the driven member including a coupling portion configured to be coupled to a punch of a die set and a threaded second portion engageable with the threaded first portion;
- wherein, during operation, in response to rotation of the driving member in a first direction, the threaded first portion and the threaded second portion are engaged such that rotation of the driving member about the first axis causes axial movement of the driven member and the punch in a first axial direction along the second axis to form a hole in a workpiece.
A knockout tool, comprising:
- a housing;
- a motor received in the housing;
- a battery pack coupled to the housing for powering the motor;
- a driving member at least partially received in the housing and configured to be rotatably driven about a first axis by the motor;
- a driven member at least partially received in the housing and configured to be driven along a second axis by the driving member in response to rotation of the driving member;
- and
- a punch of a die set coupleable to the driven member and configured to be movable axially with the driven member;
- wherein the knockout tool is configured to generate at least 50 kN of axial pulling force at the driven member for forming an opening in a workpiece with the die set.
Dependencies are inferred from the claim text.