Method and means for cooling down a stationary twist drill by a coolant
AssigneeDornag
InventorWalter Dahinden
Life of this patent
Estimating the term…
Abstract
Coolant is supplied through a main delivery line and a conduit bored in the toolholder by coolant pumps. The coolant then enters into a ring having two opposite ball jets from which it is simultaneously conveyed in two concentrated streams on to both the grooves of the twist drill. Each of the streams of the coolant is directed at the respective beginning portions of the grooves. The ring is rotatably set up on the toolholder and is adjustable in the required position. The ball jets are swingable and securable in the required position in the ring by retaining screws.
Claims5
A method for cooling down a twist drill having a plurality of grooves formed therein on a toolholder, which drill remains stationary during the working process, coolant being supplied onto said drill through a conduit bored in said toolholder and through a plurality of jets, mounted on a rotatable ring disposed on said toolholder, which comprises:
- adjusting said rotatable ring so as to align said plurality of jets so as to correspond to said plurality of grooves;
- supplying the coolant under pressure through said plurality of jets in a plurality of simultaneous concentrated streams separate from each other onto the plurality of grooves of said twist drill;
- directing each of said streams of coolant at respective beginning portions of said plurality of grooves;
- and
- initially limiting application of said streams of coolant to said respective beginning portions of said plurality of grooves.
A machine tool cooling assembly comprising:
- a toolholder for holding a twist drill having a plurality of grooves formed therein;
- a ring member rotatably mounted on said toolholder adjacent said twist drill;
- a plurality of jets swivelably mounted on said rotatable ring member;
- coolant supply means communicating with said plurality of jets such that coolant is directed by said jets at respective beginning portions of said plurality of grooves and
- means mounted on said ring member for securing said plurality of jets in a predetermined position, said ring member including a countersunk portion and said means for securing said plurality of jets comprising a second ring member abutting each of said plurality of jets and securing members engaging said second ring member, said second ring member and said securing members being positioned within said countersunk portion of said ring member.
Dependencies are inferred from the claim text.