Rack and method for producing a rack for a steering gear of a motor vehicle

A technology for motor vehicles and steering devices, applied in mechanical steering gears, steering gears, steering mechanisms, etc., can solve problems such as uneconomical and slow processing management, and achieve the effects of short processing time, high dimensional accuracy, and avoidance of critical hardness increase.

Active Publication Date: 2019-03-01
THYSSENKRUPP PRESTA AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Slower processing management does avoid any critical hardness increase, but requires a higher effort in terms of time and is therefore uneconomical

Method used

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  • Rack and method for producing a rack for a steering gear of a motor vehicle
  • Rack and method for producing a rack for a steering gear of a motor vehicle
  • Rack and method for producing a rack for a steering gear of a motor vehicle

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Experimental program
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Embodiment Construction

[0088] In the individual figures, identical parts always have the same reference numerals, so they are usually identified or mentioned only once in each case.

[0089] figure 1 A schematic perspective view of a steering system 1 of a motor vehicle is shown, wherein a torque as steering torque can be introduced by the driver via a steering wheel 102 into a steering shaft 101 . The steering torque is transmitted via the steering shaft 101 to a steering pinion 104 meshing with the rack 2 , which in turn transmits a predetermined steering angle to steerable wheels 110 of the motor vehicle via corresponding tie rods 108 . Together with the rack 2 , the steering pinion 104 forms a steering device 105 . The steering device 105 has a housing (not shown here) in which the steering pinion 104 is mounted rotatably and the rack 2 is mounted rotatably in a longitudinal direction A, also called axial direction A, which Longitudinal displacement in both directions indicated by double arrow...

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PUM

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Abstract

The invention relates to a method for producing a rack (2) for a steering gear of a motor vehicle, having at least one toothed section (21) with a toothing (22) and at least one shaft section (24) comprising at least one functional section. Separate segments, comprising at least one toothed segment (61) and a shaft segment (62), are provided, the segments are oriented on a common longitudinal axis(L), and the axial joint surfaces (28) of the segment, said joint surfaces being oriented towards one another, are connected together at a welding point by means of friction welding. For the purposesof the friction welding process, the joint surfaces (28) are brought into frictional contact, the segments (61, 62) are rotated relative to each other about the longitudinal axis (L) in order to rubtogether, the joint surfaces (28) are pressed against each other with a pressing force, - the segments (61, 62) are moved towards each other in the axial direction (A) by a specified joining distance(X), and the segments (61, 62) are held in position without rubbing. The aim of the invention is to improve the joining process of segments of a constructed rack. This is achieved according to the invention in that the method has the following steps: rubbing with a pressing force amounting to a rubbing force, rubbing so as to introduce heat with a heat-introducing force which equals 5 to 12 timesthe rubbing force, and pressing the joint surfaces together until the specified joining distance (X) is reached with a welding force which approximately equals 10 to 20 times the rubbing force.

Description

Background technique [0001] The invention relates to a method for producing a rack for a steering device of a motor vehicle, said rack having at least one toothed part with teeth and at least one shaft part with at least one functional part, in which In the method, a divided section comprising at least one toothed section and a shaft section is provided, the divided sections are aligned on a common longitudinal axis, and the divided sections pass through the at least one belt Axial joint surfaces leading towards each other of the tooth segment and a shaft segment are connected to each other at the welded joint by friction welding, wherein for friction welding: [0002] - bring the mating surfaces into frictional contact; [0003] - the segments are rotated relative to each other about the longitudinal axis for friction; [0004] - joint surfaces are compressed against each other by contact pressure; [0005] - the segments are moved towards each other in the axial direction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D3/12B23K20/12
CPCB23K20/12B62D3/126B23K20/129B23K20/227B23K20/24B23K2101/008B23K2103/04B23K2103/18B23K20/121B21K1/767
Inventor 拉尔夫·埃克斯坦赫尔穆特·布劳恩韦尔特·贝诺尔德德特勒夫·林德纳
Owner THYSSENKRUPP PRESTA AG
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