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Driving device for controlled displaceable carriages

A driving device and controlled technology, which is applied in the direction of feeding device, electromechanical device, and mechanical energy control, can solve the problems of bearing scrapping and high temperature rise, and achieve the effects of reduced manufacturing cost, reduced weight, and light weight

Inactive Publication Date: 2009-11-25
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to a higher temperature rise in the tapered roller bearing and thus to premature failure of the bearing

Method used

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  • Driving device for controlled displaceable carriages

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 The shown drive according to the invention is used for the controlled movement of the not shown slide of the machine tool relative to the machine bed.

[0028] The drive means comprises an electric motor with a stator 02 and a rotor 03 arranged on a shaft 01 . Torque motors are preferably used as electric motors. The rotor 03 is supported by the shaft 01 and is centered on said shaft 01 by a cylinder of greater length. In this way, rotor 03 can be centered sufficiently precisely with minimal radial runout errors. The rotor 03 is fixed and clamped on the shaft 01 by means of the clamping assembly 04 . This ensures a slip-free torque transmission.

[0029] The electric motor is preferably arranged in a cooling jacket 05 surrounding the stator 02 . The electric motor is closed on both sides by means of a housing plate 06 . The shell plate 06 is fixedly connected to the cooling jacket 05 through a mechanical connector 07 . Recesses for receiving the two roll...

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Abstract

The invention relates to a driving device for controlled displaceable carriages of machine base frame in machine tool; the driving device is provided with a controllable electric motor mounted on a shaft(1); the controllable electric motor comprising a stator (2) and a rotor (03), a pinion (12) positioned on the shaft (1) and driven by the electric motor and a gear rod (13) joggled with the pinion (12); wherein the gear rod (13) is arranged at a machine base frame; and at least two movable bearings (09, 10) for supporting the shaft (01); wherein the movable bearings (09, 10) are mounted in the void of the housing plate (06). The driving device according to the invention is characterized in that: a movable bearing is configured into a fixed bearing (09) and a bearing is configured into a floating bearing (10); the rotor (03) and the shaft (01) are connected through the fixing element of the machine.

Description

technical field [0001] The invention relates to a drive for a machine tool for a controllably movable slide relative to the machine bed according to the preamble of appended claim 1 . Background technique [0002] Generic drives are used, for example, on tool and other production machines with long linearly guided axes or slides which are moved in a controlled manner. [0003] Linear axes, with which long and mechanically rigid axes can be realized, are currently usually driven by means of trapezoidal, spherical or roller screw drives. However, since there are often no hollow-shaft motors available, the spindle or the spindle nut and the electric servomotor have to be coupled by means of toothed belts. For reasons of power matching, a front-mounted transmission is generally required. [0004] The disadvantage of these solutions is that these systems are structurally complex and expensive to acquire due to the large number of components required (spindle, spindle nut, tooth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q5/00B23Q1/25H02K5/173H02K7/116H02K29/00
CPCB23Q5/28H02K7/083F16C19/163F16C35/067H02K5/1732B23Q5/385F16C35/12H02K7/116F16C19/184F16C2380/26
Inventor 托马斯·迪滕霍费尔冈特·施密特
Owner SCHAEFFLER TECH AG & CO KG
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