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Valve lever for reciprocating piston internal combustion engine and its manufacture

A valve lever, internal combustion engine technology, applied in valve devices, mechanical equipment, engine components, etc., can solve the problem that the structure space is small and cannot be used for matching seats or forging die seats, etc.

Active Publication Date: 2021-12-28
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem here is that the structural space between the outer shape of the ball socket and the side walls is so small that there is no room for a counter seat or a forging die seat in 360° around the outer shape of the ball socket

Method used

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  • Valve lever for reciprocating piston internal combustion engine and its manufacture
  • Valve lever for reciprocating piston internal combustion engine and its manufacture
  • Valve lever for reciprocating piston internal combustion engine and its manufacture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] exist Figures 1 to 4 , generally shown in detail, the valve operating lever obtained after stamping of a steel plate as slab 2 is designated as a whole by 1 from which such later valve actuating levers are formed, wherein the lateral The slats are bent to form the side walls 3 .

[0012] A cutout 4 is pressed into the blank 2 at a position adjacent to the ball socket 5 to be embossed later after bending the side wall 3 . As a result, a free space is formed on the inner side of the side wall 3 (see Figure 4 ), the mating seat or the anvil or the forging die seat can be placed therein so that the ball socket 5 can be formed by a punch.

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PUM

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Abstract

This invention relates to valve operating rods for reciprocating piston internal combustion engines and their manufacture. The invention proposes a valve operating rod (1) for a reciprocating piston internal combustion engine, which valve operating rod is supported by means of a ball socket (5) on the cylinder head or a component of the cylinder head of the internal combustion engine and interacts with the cam of the camshaft Connection, with a substantially inverted U-shaped cross-section laterally with side walls (3), produced from sheet steel by stamping, bending and / or deep-drawing measures, and having a shank for the gas exchange valve or for the middle part, wherein the ball socket (5) is deep-drawn after forming the side wall (3) by means of a punch and a counter-seat, also called an anvil or dolly block, and wherein, in Between the side wall (3) and the outer shape of the ball socket (5) a free space is provided for the surrounding of the counter seat.

Description

technical field [0001] The invention relates to a valve operating rod for a reciprocating piston internal combustion engine and its production. The valve operating rod is supported by means of a ball socket on the cylinder head or a component of the cylinder head of the internal combustion engine and is operatively connected (Wirkverbindung) to the cam of the camshaft. The substantially inverted U-shaped cross-section with side walls is produced from sheet steel by stamping, bending and / or deep-drawing and has a shank for the gas exchange valve or a support for the middle part. Background technique [0002] Such a valve actuating lever in the form of a rocker arm is known from DE 10 2004 002 290 A1. The rocker arm is produced from a pre-punched blank, in which the lateral slats are subsequently folded over to form the side walls, and a ball socket is produced by embossing, which is connected to a pin, which is usually fastened to the cylinder head. The rod forms the functio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/18
CPCF01L1/18F01L2301/00F01L2303/00F01L1/185
Inventor 马库斯·维德曼
Owner SCHAEFFLER TECH AG & CO KG