Patent · US Expired

Two-section tool spindle having a channel for carrying pressurized fluid

US4957398A · kind A · utility

21Cited by

6References

5Claims

0Family size

Assignee

Friedrich Deckel Aktiengesellschaft · DE

Inventors

Manfred Schneider · Lichtenfels, DE
Bernd Driesner · Penzberg, DE
Joerg Luetzkendorf · Ludwigsburg, DE

Key dates

Filing date	Apr 28, 1988
Grant date	Sep 18, 1990
Priority date	—
Expiry date	Apr 28, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T409/309464
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The invention relates to a tool-spindle arrangement comprising a main spindle rotatably supported in a spindle housing and an electrical drive motor drivingly connected to the main spindle. The main spindle is constructed hollow to receive operating elements of the spindle arrangement. It is suggested that the motor shaft of the electrical drive motor itself is constructed as a main spindle. The main spindle is part of the drive motor. It is preferably constructed in two parts, namely, a spindle section and a motor-shaft section which, when connecting the drive motor to the machine, are coupled with one another. The motor-shaft section is also constructed hollow to receive operating elements, for example clamping members for chucking of the tool, air-blast pipes, cooling-medium pipes, etc.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.