Crowning profile
AssigneeVolvo Lastvagnar AB
InventorMagnus Gustafsson
Life of this patent
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Abstract
A contact element that is arranged to follow, i.e. slide or roll, against a mating part includes a contact surface having a crowning profile on at least a part thereof. The crowning profile is defined by the function Y(X)=AX6 where Y is the crowning quantity, X is the distance from the centre of the contact surface of the contact element, A and B are real numbers and B is greater than 2.
Claims11
A contact element that is arranged to follow against a mating part comprises a contact surface having a crowning profile on at least a part thereof, wherein the crowning profile is defined by a function Y(X)=AXB where Y is a crowning quantity, X is a distance from a center of the contact surface of the contact element, and wherein A and B are real numbers and B is greater than 2.
A method for determining a crowning profile for at least part of a contact surface of a contact element that is to be arranged to be rotatably mounted and to abut against a mating part so as to come into rolling contact with the mating part, comprising:
- a) selecting a plurality of different values of A and B, where B is greater than 2,
- b) defining a plurality of crowning profiles using a function Y(X)=AXB using the A and B values,
- c) determining a total or maximum contact pressure on a contact element having each of the crowning profiles for a given contact force, and
- d) selecting the crowning profile that would subject the contact element to one of a lowest total or maximum contact pressure.
Dependencies are inferred from the claim text.