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1. WO1996003252 - ROTATABLE TOOLHOLDER HAVING A STATIONARY, THROUGH-CENTER COOLANT FEED SYSTEM

Publication Number WO/1996/003252
Publication Date 08.02.1996
International Application No. PCT/US1995/002948
International Filing Date 10.03.1995
Chapter 2 Demand Filed 12.02.1996
IPC
B23Q 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL, CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
1Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
CPC
B23Q 11/103
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING
11Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work
10Arrangements for cooling or lubricating tools or work
1015by supplying a cutting liquid through the spindle
103Rotary joints specially adapted for feeding the cutting liquid to the spindle
B23Q 2220/008
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING
2220Machine tool components
008Rotatable tool holders coupled in parallel to a non rotating accessory
Y10T 408/45
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
408Cutting by use of rotating axially moving tool
44with means to apply transient, fluent medium to work or product
45including Tool with duct
Y10T 409/304032
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
409Gear cutting, milling, or planing
30Milling
303976with means to control temperature or lubricate
304032Cutter or work
Applicants
  • KENNAMETAL INC. [US]/[US]
Inventors
  • MEACHUM, Donald, E.
Agents
  • PORCELLI, James, G.
Priority Data
08/279,46125.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ROTATABLE TOOLHOLDER HAVING A STATIONARY, THROUGH-CENTER COOLANT FEED SYSTEM
(FR) PORTE-OUTIL ROTATIF A SYSTEME FIXE D'ALIMENTATION DE LUBRIFIANT PAR LE MOYEU
Abstract
(EN)
A rotatable toolholder (1) is provided having a stationary coolant feed system (60) for directing a through-center, non-rotating coolant stream to a coolant conducting bore (82) in a rotating cutting tool (25). The rotatable toolholder (1) comprises a stationary housing (3), a driven shaft (5) having an output end (13) rotatably mounted in the housing (3), and a tool coupling (17) rotatably mounted on an opposite side of the housing (3) for holding and rotating the end of a cutting tool (25). The coolant system (60) of the toolholder (1) includes a nozzle assembly (70) stationarily mounted within the housing (3) and having a nozzle (76) for directing a non-rotating stream of coolant into the coolant conducting bore (82) of the tool (25), and a stationary conduit (48) for conducting a coolant flow from a source (63) of pressurized coolant to the nozzle assembly (70) while isolating the coolant flow from the rotating components within the housing (3). A transmission assembly (100) is provided within the housing for transmitting rotary power from the driven shaft (5) to the tool coupling (17). The use of a stationary nozzle assembly (20) isolates the flow of coolant from centrifugal forces that the rotating components within the housing (3) would otherwise apply to it, while the isolating function of the coolant supply conduit (48) obviates the need for dynamic fluid seals between the housing (3) and the driven shaft (5) and tool coupling (17) that leak and create frictional drag, and also renders unnecessary micro particle filtration of recirculated coolant.
(FR)
Un porte-outil rotatif (1) comporte un système d'alimenation de lubrifiant fixe (60) dirigeant un courant lubrifiant non rotatif, traversant le moyeu, dans un alésage (82) acheminant le lubrifiant dans un outil de coupe rotatif (25). Le porte-outil rotatif (1) comprend un corps fixe (3), un arbre moteur (5) comportant une extrémité d'entraînement (13) montée rotative dans le corps (3), et un serre-outil (17) monté rotatif sur un côté opposé du corps (3) afin de retenir et faire tourner l'extrémité d'un outil de coupe (25). Le système (60) du lubrifiant du porte-outil (1) comprend un ensemble ajutage (70) monté inamovible dans le corps (3) et pourvu d'un ajutage (76) dirigeant un courant non rotatif de lubrifiant dans le canal (82) de l'outil (25), et un conduit fixe (48) acheminant l'écoulement de lubrifiant d'une source (63) de lubrifiant sous pression à l'ensemble ajutage (70) tout en isolant cet écoulement des composants en rotation du corps (3). Un ensemble de transmission (100) est ménagé dans le corps (3) pour transmettre une force rotative de l'arbre moteur (5) au serre-outil (17). L'ensemble ajutage fixe (20) évite à l'écoulement de lubrifiant d'entrer en interférence avec les forces centrifuges que les composants en rotation du corps (3) appliquent normalement sur l'écoulement, et cette non-interaction au niveau du conduit d'amenée (48) du lubrifiant rend superflu, d'une part, l'emploi d'un dispositif de joints dynamiques fluides entre le corps (3), l'arbre moteur (5) et le serre-outil (17), dispositif qui fuit et crée un effet de friction, et, d'autre part, la filtration des microparticules du lubrifiant soumis à une recirculation.
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