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Method for installing wrap spring

A winding and winding technology, which is applied in the field of installing wound springs, can solve problems such as winding springs getting stuck, reduce the risk of obstruction, avoid friction-related resistance, and allow automatic installation

Active Publication Date: 2021-09-21
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has been found that tensioned wound springs can seize when threaded and threaded connections fail

Method used

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  • Method for installing wrap spring
  • Method for installing wrap spring
  • Method for installing wrap spring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] for installation figure 1 In the wrap-around spring clutch 10 partially shown in FIG. 1 , first a first sleeve 12 is provided, into which the wrap-around spring 14 is to be inserted. To this end, by providing an angle α between the central axis 16 of the wrap spring 14 and the first longitudinal axis 18 of the first sleeve, the robotic arm holding the wrap spring 14 can apply the wrap spring 14 at an angle to The first sleeve 12. The wrap spring 14 can be elastically twisted in the winding direction before it is applied to the first sleeve 12, while it is applied to the first sleeve 12, or after it is applied to the first sleeve 12, thereby reducing The outer diameter of the small wound spring 14. In the elastic torsion state of the wrap spring 14 , the outer diameter of the wrap spring 14 is smaller than the inner diameter of the inner side surface 20 of the first sleeve 12 .

[0028] like figure 2 As shown, the wrap spring 14 can be threaded onto the first sleeve 1...

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Abstract

The invention relates to a method for installing a wrap spring (14), in which method: a first sleeve (12) is provided; a wrap spring (14) designed to frictionally abut a lateral surface (20) of the first sleeve (12) is applied, in the relaxed state, to the lateral surface (20) of the first sleeve (12) at an angle to a first longitudinal axis (18) of the first sleeve (12) extending in the axial direction; then the wrap spring (14) is elastically twisted while the wrap spring (14) contacts the lateral surface (20) of the first sleeve (12); a resulting angle (a) between the first longitudinal axis (18) and a central axis (16) of the wrap spring (14) is reduced; the wrap spring (14) is threaded onto the first sleeve (12); and subsequently the wrap spring (14) is relaxed in order to establish frictional contact with the lateral surface (20) of the first sleeve (12). This enables a simple, in particular automated, installation of a wrap spring (14).

Description

technical field [0001] The invention relates to a method by means of which a wrap-around spring provided for frictional abutment against a sleeve can be mounted. Background technique [0002] For example, it is known from DE 10 2009 052 611 A1 to arrange a wrap-around spring between an inner sleeve and an outer sleeve, wherein by twisting the wrap-around spring in or against the winding direction, for example by generating or interrupting the motor vehicle The torque flow between the engine shaft of the motor vehicle engine and the pulley used to drive the auxiliary unit can establish or cancel the frictional engagement with the inner or outer sleeve. In order for the wrap spring to produce frictional engagement in the relaxed state, it is necessary during installation to elastically twist the wrap spring in or against the winding direction to such an extent that the tensioned wrap spring can be screwed into the inserted on the slope. However, it has been found that tensio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F1/04F16F1/06F16F1/12F16F15/12F16F15/121
CPCF16F1/06F16F1/042F16F1/12F16F2226/04F16F15/1203F16F15/1216F16D41/206F16D2300/12B23P19/048F16D2250/0084F16F7/065F16D13/12F16D13/08
Inventor 沃尔夫冈·沃尔克
Owner SCHAEFFLER TECH AG & CO KG
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