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Camshaft and method for producing a cam shape of a cam set of a camshaft

A technology of camshafts and cam groups, applied in valve drives, machines/engines, manufacturing tools, etc., can solve problems such as no description

Active Publication Date: 2019-09-03
THYSSENKRUPP PRESTA TECCENTER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the aforementioned document, such machining, in particular grinding of the contours of the individual cam elements with respect to the desired cam shape, is not described

Method used

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  • Camshaft and method for producing a cam shape of a cam set of a camshaft
  • Camshaft and method for producing a cam shape of a cam set of a camshaft
  • Camshaft and method for producing a cam shape of a cam set of a camshaft

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Embodiment Construction

[0043] In Figure 1 to Figure 13 Components with the same function and mode of action are marked with the same reference numerals.

[0044] 1 to 3 each show a substantially known embodiment of a cam set 11 in a side view. The cam set 11 has at least one fixed cam element 20 with a substantially known fixed cam profile 20a and one adjusting cam element 30 with a substantially known adjusting cam profile 30a. In FIG. 1 , the cam set 11 is at a 0° divergence angle position, while in FIG. 2 the cam set 11 is shown at a maximum divergence angle position. This means that the adjusting cam element 30 has been diverged or rotated relative to the fixed cam element 20, wherein such a stepless setting of the angular position between the adjusting cam element 30 and the fixed cam element 20 takes into account the requirements of the internal combustion engine of the vehicle. and load conditions are thus advantageous. Within the scope of the invention, stepless means that any angular po...

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Abstract

The invention relates to a method for producing the cam shape of a cam set of a camshaft having at least two relatively adjustable cam elements and a camshaft, wherein the camshaft has an outer shaft and is arranged concentrically and rotatably An inner shaft inside the outer shaft and at least one fixed cam element fixedly connected in rotation to the outer shaft and one adjusting cam element fixedly connected in rotation to the inner shaft, wherein the method has at least the following steps: The adjusting cam profile of the adjusting cam member is machined with a continuously reduced diameter at least in part, wherein the adjusting cam base circle is reduced to a diameter which is less than the fixed cam nominal circle diameter minus twice the adjusting cam base circle tolerance , and - machining the fixed cam profile of the fixed cam element by means of at least one area between the handover point and the machining point by reducing the fixed cam profile molding, on reaching the handover point, a circular movement of the cam element The contact element, which is converted into the linear movement of the valve, is transferred from the fixed cam element to the adjusting cam element.

Description

technical field [0001] The invention relates to a method for producing a cam shape of a cam set of a camshaft having at least two relatively adjustable cam elements. Furthermore, the invention relates to a camshaft, in particular a rotatable camshaft, advantageously having at least a cam set of at least two relatively adjustable cam elements. Background technique [0002] The use of camshafts is basically known in the field of automotive technology, by means of which a rotational movement is converted into a longitudinal movement and thus an intake valve and / or an exhaust valve of an internal combustion engine is actuated. The advantageously assembled camshaft has, for example, an outer shaft and an inner shaft concentrically, in particular coaxially, rotatably arranged inside the outer shaft, and at least one fixed cam element connected in rotation fixedly to the outer shaft and a Rotate the fixedly connected adjustment cam element. It is also basically known that at leas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/047F01L1/08F01L13/00
CPCF01L1/047F01L1/08F01L13/0057F01L2001/0473F01L2303/00B24B19/12F01L1/34413
Inventor 马赛尔·魏道尔贝恩德·曼马里奥·林德纳
Owner THYSSENKRUPP PRESTA TECCENTER AG