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Method for producing a lift transfer component

A technology for transmitting components and manufacturing methods, applied in bearing components, engine components, machines/engines, etc., and can solve problems such as long processing time

Active Publication Date: 2014-07-02
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, an important disadvantage of this method results from the relatively long machining times required to traverse the loop and thus offset the short cycle times for producing the lift transmission components

Method used

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  • Method for producing a lift transfer component

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Embodiment Construction

[0020] The method for realizing the lift transmission part of the present invention will be from image 3 begin to explain, the image 3 A cross-sectional view of part of a finger valve train known per se of an internal combustion engine 1 is shown. In this preferred case of use, the lift transmission part 2 is configured as a large tandem finger, which is pivotally mounted at one end on the support element 3 and transmits the lift of the cam 4 to the row via the other end. Valve 5. The finger 2 comprises a housing, which in this case is constructed in the form of a shaft symmetrical with respect to the central axis of the finger, and comprises two parallel side walls 6 which are separated from each other and comprise aligned receiving holes, and said finger 2 further comprises a bearing pin 7 fixed in the receiving hole, and a roller mounted on the bearing pin 7 by means of a needle bearing and thus receiving the lift of the cam 4 with low friction 8. The bearing pin 7 is...

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Abstract

The invention relates to a method for the production of a lift transmission part (2) driven in particular for a gas exchange valve train or a fuel pump of an internal combustion engine (1), said lift transmission part (2) having a housing (6), mounted on Bearing pins (7) in socket holes (9) of the housing and rollers (8) supported thereon by plain bearings or roller bearings, wherein the bearing pins are through-hardened over their entire axial extension , so as to have a core hardness of at least 650 HV, and the through-hardened pin end (10) of said bearing pin expands radially relative to the socket bore to positively connect the bearing pin to the housing. The hardness of said bearing pin should not exceed 780HV, wherein the radial expansion of one of said pin ends is formed by a deformation die (11) which travels parallel to the axis of the bearing pin while simultaneously Apply force on the circumference of the bearing pin and at the transition between the end faces.

Description

technical field [0001] The invention relates to a method for the manufacture of a lift transfer component, in particular for a gas exchange valve train or a fuel pump drive of an internal combustion engine, said lift transfer component comprising a housing, a Bearing pins and rollers supported on them by means of sliding bearings or roller bearings, said bearing pins being through-hardened over the entire axial length to a core hardness of at least 650 HV (Vickers hardness), and through-hardened The pin end of the hardened bearing pin is radially widened relative to the receiving bore, so that the bearing pin can be connected to the housing by form fit. Background technique [0002] A lift transmission part configured as a roller tappet for actuating a push rod of a gas exchange valve of an internal combustion engine via a bottom camshaft is known from US 5,099,807. Roller tappets consist of cam-actuated rollers which are mounted via roller bearings on bearing pins which ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/14F01L1/18F16C43/04
CPCF01L2105/02Y10T29/49938Y10T29/49915F01L2103/00Y10T403/4634F01L1/18Y10T29/49707Y10T29/49247F01L1/14Y10T29/5168Y10T29/4992F01L1/185F01L2103/01F01L2820/01F01L2001/187F01L2305/02F01L2303/01F01L2303/00
Inventor 彼得·卡雷斯马可·梅斯伯恩
Owner SCHAEFFLER TECH AG & CO KG