Method and apparatus for forming a hole for using cooling air in hole forming process
AssigneeFuji Jukogyo Kabushiki Kaisha
InventorsTatsuya Ohta, Masami Moritani
Life of this patent
Estimating the term…
Abstract
A hole forming apparatus for forming a hole through the side wall of a hollow elongated work without any adhesion of dross generated not only during hole forming operation to the inner wall surface of the work but also without any burning of a rust preventing oil. To cool the working location, cooling air is blown through the opening end of the work so as to generate a stream of cooling air in the interior of the work.
Claims6
A hole forming apparatus having a plurality of receiving means for receiving a lengthy work mounted on a base frame, a lifter provided between said receiving means and said work for pushing said work to a predetermined position, a plurality of locators for setting said work at said predetermined position, a plasma torch mounted on said base frame for making a hole in said lengthy work, a robot provided at a vicinity of said hole forming apparatus for supporting said plasma torch and for allowing movement to at any direction, and a robot control unit for controlling said robot, comprising:
- an air blowing unit with a blowing nozzle mounted on a bracket of said base frame for blowing pressurized air to an open end portion of said work;
- and
- a space member interposed between a cooling head of said bracket and said work for spacing a gap to induce a fresh air into said open end portion and for cooling down said work while forming a hole in said work by said plasma torch so as to avoid rust and dross from adhering near said hole and to obtain a precise diameter of said hole.
A hole forming apparatus comprising:
- a plurality of receiving means for receiving a lengthy work mounted on a base frame,
- a lifter provided between said receiving means and said work for pushing said work to a predetermined position,
- a plurality of locators for setting said work at said predetermined position,
- a plasma torch mounted on said base frame for making a hole in said lengthy work,
- a robot provided at a vicinity of said hole forming apparatus for supporting said plasma torch and for allowing movement to at any directions,
- a robot control unit for controlling said robot,
- an air blowing unit with a blowing nozzle mounted on a bracket of said base frame for blowing pressurized air to an open end portion of said work;
- and
- a space member interposed between a cooling head of said bracket and said work for spacing a gap to induce a fresh air into said open end portion and for cooling down said work while forming a hole in said work by said plasma torch so as to avoid rust and dross from adhering near said hole and to obtain a precise diameter of said hole.
Dependencies are inferred from the claim text.