| 摘要 |
#CMT# #/CMT# The device has groove-shaped longitudinal channels (25) for a cooling agent produced at an area of a front part (2a) of a central opening (2) in a base (1). A stop screw (20) is provided with a central cooling agent channel (22) and fastened in the rear part (2b) of the central opening. A cylindrical tool-shaft (3) having a front surface (3a) is supportable at the stop screw. The cooling agent channel is connectable with the longitudinal channels by an area (24) limited by a passage surface (2c) of the central opening on one side and by the front surface of the tool shaft on another side. #CMT#USE : #/CMT# Chucking device i.e. hydraulic expansion chuck, for a machine-cutting tool i.e. end milling cutter. #CMT#ADVANTAGE : #/CMT# The cooling agent channel is connectable with the longitudinal channels by the area limited by the passage surface of the central opening on one side and by the front surface of the tool shaft on another side, thus ensuring trouble-free and simple clamping of even cylindrical tool shafts, and steel and carbide metal-shafts of small diameter of 6 mm with high clamping forces without requiring expensive devices such as shrinking or pressing units. The chucking device hence ensures high concentricity, high damping and high durability of cutting. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a longitudinal sectional view of a chucking device with a tool-shaft supported at a stop screw. 1 : Base 2 : Central opening 2a : Front part 2b : Rear part 2c : Passage surface 3 : Cylindrical tool-shaft 3a : Front surface 20 : Stop screw 22 : Central cooling agent channel 24 : Area 25 : Groove-shaped longitudinal channels. |
