Use of barrier film for parts lubrication in hub to shaft press fit operation
AssigneeSeagate Technology LLC
InventorsSheth Champaklal Sanjay, Gordon Alan Kashiwagi, James Scott Bowdoin
Life of this patent
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Abstract
Methods or devices are provided to press fit operations using barrier film to lubricate parts or components of an assembly. Embodiments are capable of eliminating current common problems in press fit operations and related fields including the contamination of adjacent parts with oils or other lubricating fluids, the requirement of excessive and damaging Press Forces, and the presence of pronounced Force/Displacement “ripple” or “chatter.” Embodiments allow for a barrier film to act in place of a lubricant during the hub-shaft press operation, but require no press operator application or clean-off after pressing.
Claims20
A method of securely joining components of a press fit assembly comprising:
- applying a surface altering agent to a surface area of a first component that is to be placed in contact with a second surface area of a second component within the press fit assembly, and wherein the surface altering agent forms a barrier film;
- and
- pressing the surface area containing the barrier film into contact with the second surface area.
A press fit assembly comprising a hub and a shaft, and a surface altering barrier film between one or more areas of the hub and the shaft which are in contact with each other.
A method of securely joining components of a press fit assembly comprising:
- applying a surface altering agent to a surface area of a first component that is to be placed in contact with a second surface area of a second component within the press fit assembly, and wherein the surface altering agent forms a barrier film;
- pressing the surface area containing the barrier film into contact with the second surface area;
- applying the surface altering agent in a liquid form to the first surface area;
- and
- drying the liquid form surface altering agent at room temperature.
Dependencies are inferred from the claim text.