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Planetary rolled thread drive

A technology of planetary rollers and transmission mechanisms, which is applied to transmission devices, gear transmission devices, mechanical equipment, etc., and can solve problems such as the cost of intermediate rings

Active Publication Date: 2013-06-05
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is costly to manufacture intermediate rings that are consistent in width

Method used

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  • Planetary rolled thread drive
  • Planetary rolled thread drive
  • Planetary rolled thread drive

Examples

Experimental program
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Effect test

Embodiment Construction

[0028] figure 1 A planetary roller screw drive according to the invention is shown with a spindle nut 2 arranged on a threaded spindle 1 . The planets 3 are arranged distributed over the circumference between the spindle nut 2 and the threaded spindle 1 and are in rolling engagement with the spindle nut 2 and the threaded spindle 1 . Under the relative rotation between the threaded screw 1 and the screw nut 2, the planets 3 roll both on the inner circumference of the screw nut 2 and on the outer circumference of the screw nut 1 and around their own planet axis and Rotate around the screw axis. The planets 3 run along planetary orbits arranged perpendicular to the axis of the screw.

[0029] The threaded spindle 1 is provided with a thread 4 wound helically around the spindle axis, which thread is formed by a plurality of turns of thread grooves 5 . Instead of a single thread groove 5 , it is also possible to provide a multi-threaded thread with a large number of thread groo...

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Abstract

The invention relates to a planetary rolled thread drive. Planetary roller gear drive with a spindle nut (2) that is arranged on a threaded spindle (1) and is divided into nut parts (6, 7) that can be adjusted relative to each other in the axial direction, and with a plurality of planets (3) that are arranged distributed around a periphery and are in roller engagement with the spindle nut (2) and the threaded spindle (1). An adjustment part (20) set in the axial direction against the one nut part (6) that can be adjusted in the axial direction is provided and the one nut part (6) that can be adjusted in the axial direction is arranged between this adjustment part and the other nut part (7).

Description

technical field [0001] The invention relates to a planetary roller screw transmission mechanism, which converts the relative rotation between a screw nut and a screw screw into translational relative movement between the screw nut and the screw screw. Background technique [0002] A planetary roller screw drive is known from DE 85 13 093 U1, which is provided with a plurality of planetary elements distributed on the circumference, which are in rolling engagement with a threaded spindle and a spindle nut, wherein the threaded spindle has A plurality of helically wound threads of the at least one thread groove around the spindle axis. On its inner circumference, the spindle nut is provided with a nut-side profile, wherein the planet-side profile of the planets is in rolling engagement with the nut-side profile. The planet-side profile is formed by an annular closed groove arranged perpendicular to the planet axis. The planets move on planetary orbits arranged perpendicular t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/22
CPCF16H25/2003F16H1/30F16H25/2252B23P15/14F16D1/072Y10T29/49464
Inventor 于尔根·奥斯特尔兰格马可·梅斯伯恩
Owner SCHAEFFLER TECH AG & CO KG
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