Coolant pipe for toolholder

Details Coolant pipe for toolholder Coolant pipe for toolholder

1997-04-10

1998-08-04

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

With means to control temperature or lubricate

408 56, 408 57, 408 59, B23B 5106

Patent

active

057884331

ABSTRACT:
A holder for a tool comprises a tapered hollow shaft, having an upper opening, for clamping into a tool receptacle, and a coolant tube arranged in the interior of the tapered hollow shaft for delivery of coolant to the tool. The coolant tube comprises an inlet opening for coolant, facing the upper opening, as well as an upper tube section having a cylindrical outer enveloping surface with which, when the holder is clamped into the tool receptacle, a sealing ring, which is arranged in a delivery tube for coolant which then at least partly overlaps the coolant tube, is in contact. A cover for the inlet opening is provided, which prevents chips from getting into the coolant tube. In addition, a further tube section, the outside diameter of which is smaller than that of the upper tube section, adjoins the upper tube section at the bottom. Upon coupling of the holder, the sealing ring is located in the region of the further tube section, and is not brought into sealing contact with the enveloping surface of the upper tube section until clamping occurs.

REFERENCES:
patent: 2184919 (1939-12-01), Miller
patent: 2855614 (1958-10-01), Simon
patent: 3795957 (1974-03-01), Steusloff
patent: 4082472 (1978-04-01), Mossner et al.
patent: 4668135 (1987-05-01), Hunt
patent: 4992012 (1991-02-01), Cioci
patent: 5346344 (1994-09-01), Kress et al.
patent: 5405220 (1995-04-01), Ishikawa
European Search Report dated Aug. 25, 1997--EP 9710 5191.7.

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