Rotary cutting tool having an energy harvesting arrangement
AssigneeIscar, Ltd.
InventorLior Beniluz
Life of this patent
Estimating the term…
Abstract
A rotary cutting tool has a tool holder and a cutting portion releasably attached to the tool holder. The tool holder includes a mounting portion designed to be attached to a spindle. The rotary cutting tool also has a fluid channel and an energy harvesting arrangement which includes a turbine located in the fluid channel. The fluid channel opens out to a channel inlet opening, for the supply of fluid, located at the mounting portion and a channel outlet opening in fluid communication with the channel inlet opening.
Claims25
A rotary cutting tool (20) having a tool central axis (A) which defines opposite forward and rearward directions (DF, DR) and about which the rotary cutting tool (20) is rotatable, the rotary cutting tool (20) comprising:
- a tool holder (22) comprising opposite rearward and forward ends (24, 26);
- a cutting portion (36) releasably attached to the forward end of the tool holder (22), the cutting portion (36) comprising a cutting edge (38);
- a fluid channel (46) comprising:
- a) a channel inlet opening (48) located at the rearward end (24) of the tool holder (22) and configured to receive a supply of fluid;
- b) a channel outlet opening (50) in fluid communication with the channel inlet opening (48) and configured to discharge fluid that entered at the channel inlet opening (48);
- c) a channel turbine chamber (52) located between the channel inlet and outlet openings (48, 50);
- and
- d) a channel turbine antechamber (54) adjoining the channel turbine chamber (52) and located rearward thereof with respect to the tool central axis (A);
- a turbine receptacle (53) formed as a separate element from the tool holder (22), the turbine receptacle (53) being received into the tool holder (22) and occupying the channel turbine chamber (52);
- and
- an energy harvesting arrangement (58) comprising:
- a turbine (60) located in the turbine receptacle (53) occupying the channel turbine chamber (52), the turbine (60) configured to be rotated by fluid flowing from the channel inlet opening (48) to the channel outlet opening (50), in a forward flow direction (FF);
- wherein:
- an axial length of the channel turbine antechamber (54) is smaller than an axial length of the channel turbine chamber (52);
- the channel outlet opening is located at the cutting portion (36);
- and
- the channel outlet opening is oriented to discharge said fluid that entered at the channel inlet opening (48) as a coolant, after said fluid has rotated the turbine (60).
A rotary cutting tool (20) having a tool central axis (A) which defines opposite forward and rearward directions (DF, DR) and about which the rotary cutting tool (20) is rotatable, the rotary cutting tool (20) comprising:
- a tool holder (22) comprising opposite rearward and forward ends (24, 26);
- a cutting portion (36) releasably attached to the forward end of the tool holder (22), the cutting portion (36) comprising a cutting edge (38);
- a fluid channel (46) comprising:
- a) a channel inlet opening (48) located at the rearward end (24) of the tool holder (22) and configured to receive a supply of fluid;
- b) a channel outlet opening (50) in fluid communication with the channel inlet opening (48) and configured to discharge fluid that entered at the channel inlet opening (48);
- and
- c) a channel turbine chamber (52) located between the channel inlet and outlet openings (48, 50);
- a turbine receptacle (53) formed as a separate element from the tool holder (22), the turbine receptacle (53) being received into the tool holder (22) and occupying the channel turbine chamber (52);
- and
- an energy harvesting arrangement (58) comprising:
- a turbine (60) located in the turbine receptacle (53) occupying the channel turbine chamber (52), the turbine (60) configured to be rotated by fluid flowing from the channel inlet opening (48) to the channel outlet opening (50), in a forward flow direction (FF);
- wherein:
- the channel outlet opening is located at the cutting portion (36);
- and
- the channel outlet opening is oriented to discharge said fluid that entered at the channel inlet opening (48) as a coolant, after said fluid has rotated the turbine (60).
Dependencies are inferred from the claim text.