Shrinking coil with direct tool cooling
AssigneeFranz Haimer Maschinenbau KG
InventorFranz Haimer
Life of this patent
Estimating the term…
Abstract
The present invention relates to a device for tensioning or de-tensioning tools, having a tool shaft in a tool chuck which has a sheath section open on the free end thereof and which is made of electrically conductive material, for receiving the tool shaft in a friction connection, having an induction coil which surrounds the sheath section of the tool chuck, to which preferably high-frequency alternating current can be applied, and which is designed as a ring or cylinder coil, wherein the device has at least one channel running between the inner peripheral surface of the induction coil and the sheath section of the tool chuck, through which flows a cooling agent which cools the sheath section of the tool chuck.
Claims23
A device for clamping and/or unclamping tools, comprising a tool shaft, in a tool chuck, which comprises a sleeve section, which is open at its free end and which is made of electrically conductive material for friction locked receiving of the tool shaft, with an induction coil, comprising the sleeve section of the tool chuck, which induction coil can be loaded with a current and which is configured as an annular coil or a cylindrical coil, wherein the device comprises at least one channel, extending between the inner circumferential surface of the induction coil and the sleeve section of the tool chuck, through which channel a coolant is flowed, which cools the sleeve section of the tool chuck.
A device for cooling a hot tool chuck, comprising an outer sleeve or collar which can be pushed over the sleeve section to be cooled, wherein the outer sleeve or collar comprises a channel, extending at its inside at least between the inside of the outer sleeve/collar and the sleeve section of the tool chuck, through which channel a coolant is flowed, which cools the sleeve section of the tool chuck.
Dependencies are inferred from the claim text.