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US 8,769,797 B2Granted
Method for mounting a bush around a part of a shaft by means of a tight fitting
AssigneeAtlas Copco Airpower, Naamloze Vennootschap
InventorAleksandr Pulnikov
Life of this patent
Estimating the term…
Abstract
Method for mounting a bush round a part (2) of a shaft with a force fit, which method comprises the following steps: providing a guide element (7, 23) with an outer surface (8) which is at least partly conical; providing the guide element (7, 23) in the extension of the aforesaid part (2) of the shaft (1); pushing the bush (5) over the guide element (7, 23) on the part (2) of the shaft (1).
Claims18
A method for mounting a bush around a part of a shaft with a force fit, comprising the steps:
- providing a bush with different layers of composite and having an axis, which either are or are not fibre-reinforced, wherein the layers which are located near an outer perimeter of the bush have a greater elasticity than the layers located near an inner wall of the bush, wherein providing the bush includes making the bush of a fibre-reinforced composite with at least one of the following layers or a combination thereof:
- an inner layer whose fibres are wound in a direction extending between +/−70° and 90° in relation to the axis of the bush, wherein the inner layer is made with carbon fibre;
- an intermediate layer whose fibres are wound in a direction extending according to a direction between +/−70° and 90° in relation to the shaft;
- an axial layer whose fibres are wound in a direction extending according to a direction between 0 and +/−70° in relation to the shaft;
- and,
- an outer layer whose fibres are wound in a direction extending between +/−70° and 90° in relation to the shaft;
- providing a guide element on the extension of said part of the shaft, said guide element having an outer surface which is at least partly conical and whose largest diameter deviates maximally five percent from the outer diameter of said part of the shaft;
- positioning the guide element such that the largest diameter of the conical part is directed to said part of the shaft;
- pushing the bush over the guide element, on the side of the guide element with the smallest diameter, and to said part of the shaft;
- moving a press axially towards the conical part during a first step in sliding the bush over the guide element, wherein the press is provided with a bearing face on which the entire end face of the bush rests during the pressing;
- using a press element with an inner diameter which is equal to or larger than the outer diameter of said part of the shaft during another step in sliding the bush over the guide element;
- and
- partly or entirely removing the outer layer, the axial layer and/or the intermediate layer after the bush has been applied over the part of the shaft.
10 more elements
Dependencies are inferred from the claim text.