초록 ▼

The invention discloses a means of increasing the maximum allowable load on mechanical elements that roll on each other, such as the members of constant or variable speed friction drives, ball or roller bearings, rollers, etc. The increased allowable load is achieved by constructing at least one of

The invention discloses a means of increasing the maximum allowable load on mechanical elements that roll on each other, such as the members of constant or variable speed friction drives, ball or roller bearings, rollers, etc. The increased allowable load is achieved by constructing at least one of the elements that roll on each other in two parts, including a rolling-surface part that is heavily preloaded by one or more additional parts that induce large compressive stresses on the principal planes normal to the rolling-surface. Optimum materials for the rolling-surface part are those that have a large modulus of resilience, since these materials afford the maximum allowable load capacity. In addition to hardened steels, such materials include shape-memory materials, reinforced plastics, bronze and aluminum alloys, and chilled cast iron. Shape-memory materials in particular have the advantage of simplifying the supporting structure, especially when the rolling surface is convex.

대표청구항 ▼

A pair of bodies, one of which is mounted to roll on the other, one of said pair being composed of at least two parts, including a first part that has a surface in rolling contact with the other of said pair and at least one additional part that applies to said first part forces that induce at the p

A pair of bodies, one of which is mounted to roll on the other, one of said pair being composed of at least two parts, including a first part that has a surface in rolling contact with the other of said pair and at least one additional part that applies to said first part forces that induce at the point of contact of said bodies compressive stress on a first plane normal to said surface at said point, said compressive stress being greater than one-fourth the yield point stress in simple tension for the material of said first part.