Method of mounting a magnetic head unit on a movable carrier
AssigneeU.S. Philips Corporation
InventorOelke Van de Bult
Life of this patent
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Abstract
A method of fixing a magnetic head unit on a carrying arm of a movable carrying arm arrangement for a magnetic disc storage device. The arm is arranged to be movable on a mounting aid by means of its own bearing, a previously manufactured fixing part for the magnetic head unit being also arranged on said aid in a well defined position leaving a space between the carrying arm and the fixing part. The space is filled with a suitable bonding agent, such as an adhesive, which, after curing, connects the fixing parts to the carrying arm in the correct position (FIG. 5).
Claims4
A method of mounting a magnetic head unit (6) on a carrying arm (3) of a movable carrier (2) of a magnetic disk storage device for digital data, which device comprises at least one rotating rigid magnetic disk (1) having a surface over which the magnetic head unit is moved for the storage and/or reproduction of the data in closely spaced tracks, and a bearing arrangement (29) which comprises bearing parts (31a, b;
- 32a, b) respectively connected to the movable carrier (2) and to a stationary frame (30) of the magnetic disk storage device, for accurately guiding the movements of the carrier (2) relative to the frame (30) and thereby guiding the movements of the magnetic head unit (6) over said surface of said magnetic disk (1) in an accurately defined plane, characterized in that the method comprises the following steps in the specified order:
- a. manufacturing a fixing part (9) for the magnetic head unit (6), the part being provided with locating faces, recesses, projections and openings for subsequent positioning and fixing of the magnetic head unit;
- b. arranging said carrying arm (3) and the fixing part (9) on a mounting aid (53) provided with first means (45) for positioning the carrying arm (3) relative to the mounting aid and second means (46, 47) for positioning the fixing part (9) relative to the mounting aid, the carrying arm 3 and the fixing part (9) assuming a relative position on the mounting aid (53) which is within the required positional tolerances of the finished product, but leaving a certain space between the fixing part (9) and the carrying arm (3);
- c. filling said space, at least partly, with a bonding agent in liquid form, such as an adhesive or solder;
- d. allowing the bonding agent to cure;
- thereby securing said fixing part and said carrying arm in said relative position determined in step b, and
- e. securing the magnetic head unit to the fixing part.
Dependencies are inferred from the claim text.