Machine tool with a cooled motor spindle
AssigneeIndex-Werke Komm.-Ges. Hahn & Tessky
InventorsGuenther H. Trautmann, Helmut F. Link
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Abstract
In order to improve a machine tool with a motor spindle, including a main motor integrated into a work spindle coaxially with the spindle axis, the main motor, for its part, comprising a rotor and a stator, and with a cooling device for supplying cooling surfaces of the main motor with a gaseous coolant, so that simple and effective cooling of the main motors of the motor spindles is possible, it is proposed that the stator be comprised of stator plates which, for their part, form cooling surfaces, and that the gaseous coolant be conducted directly along the cooling surfaces of the stator plates.
Claims20
A machine tool comprising:
- a motor spindle having a work spindle and a main motor, said main motor being integrated into and carried by said work spindle coaxially with a spindle axis thereof, said work spindle being mounted in at least two bearings, one of said bearings comprising a spindle bearing facing a working area of said machine tool, said main motor having a rotor and a stator, said stator having stator plates forming, for their part, cooling surfaces;
- and
- a cooling device designed to supply a gaseous coolant to said main motor under pressure above atmospheric, said gaseous coolant being conducted directly along said cooling surfaces of said stator plates and to said spindle bearing facing said working area for acting upon said spindle bearing to counteract penetration of dirt and liquid from said working area into said spindle bearing.
A machine tool comprising:
- a machine frame,
- a spindle drum rotatably mounted about an axis in said machine frame,
- several motor spindles mounted in said spindle drum, each motor spindle having a work spindle and a main motor, said main motor being integrated into said work spindle coaxially with a spindle axis thereof, said main motor having a rotor and a stator, said stator having stator plates forming, for their part, cooling surfaces, said cooling surfaces forming cooling channels extending in a radial direction of said axis of said spindle drum;
- and
- a cooling device supplying said cooling channels with a flow of gaseous coolant fed in said radial direction to said cooling channels, said gaseous coolant being conducted directly along said cooling channels.
Dependencies are inferred from the claim text.