摘要:
The pitch static attitude of a slider in an integrated lead suspension head gimbal assembly of a disk drive is controlled at the manufacturing stage. The integrated lead suspension includes a load beam, a mount plate, a hinge and a flexure made out of a multi-layer material. The flexure legs and the outrigger leads are simultaneously plastically deformed to define the pitch static attitude. The flexure legs and the outrigger leads are deformed at approximately the same longitudinal location.
摘要:
A suspension assembly is designed to carry a slider and read/write head elements in a magnetic data storage device. The suspension assembly is formed from a composite laminate structure that includes first, second, third, fourth and fifth material layers. The layers are arranged such that the second layer is disposed between the first and third layers, and the fourth layer is disposed between the third and fifth layers. The laminate structure is configured using a suitable removal process, such as partial chemical etching, to define a mount plate, a hinge, a load beam functional end, and an electrical lead system. The laminate structure may be further formed with a flexure gimbal system that comprises the third, fourth and fifth layers.
摘要:
A capillary tube for a solder ball connection device connects a first connection surface of a pad to a second connection surface of a pad with a solder ball. The first connection surface is formed at a slider held by a slider holder in a disk unit. The second connection surface is formed at an end of a lead wired to the slider holder. The capillary tube has a ball regulator with a substantially conic, hollow portion. The solder ball regulator has an opening at its top that opens to the tip of the hollow portion. The center axes of the hollow portion and the opening are common. The solder ball regulator also has a pair of projections along the center axis around the opening, where the projections face each other with the center axis therebetween. The projections regulate the movement of the solder ball. The tip of the hollow portion is tapered when viewed from a line connecting the pair of projections and the extreme tips of the tapered tip portions.
摘要:
A single piece head gimbal assembly comprised of a load beam, a pair of flexure arms, a slider support member and a plurality of electrical lines. The head gimbal assembly is formed from a laminated material comprised of a support layer, a dielectric layer and a high strength electrically conductive layer. The electrical lines are formed in the high strength electrically conductive layer and extend along the backside of the load beam. The backside surface of a slider is accessible through an aperture formed between the flexure arms and the electrical lines are terminated to the backside of the slider. Alternatively, the electrical lines extend along the backside or frontside of the load beam and are terminated to the trailing edge of the slider.
摘要:
Disclosed are an electrical connection assembly for a data storage device and a method of fabricating the electrical connection between a transducer termination pad formed on a slider and a suspension having a conductive lead structure. A compliant cantilevered conductive pad is formed at the end of the conductive lead structure. A solder bump is formed on the transducer termination pad, and may be formed subsequent to dicing the sliders. The slider is placed in mechanical contact with the suspension for mechanical support such that the solder bump contacts the cantilevered conductive pad, which cantilevered conductive pad complies with the solder bump to absorb positional errors. Then, the solder bump is heated, preferably by a laser, so as to reflow the solder bump to make an approximately right angle solder fillet joint electrical connection with the cantilevered conductive pad.
摘要:
A planar head-suspension assembly for an information storage system is provided. The assembly comprises a planar head being of the type having an air bearing surface and a back side opposite the air bearing surface. The head has a read and/or write transducer formed therein and electrical leads terminating on the back side at termination pads. The assembly also includes a multilayered suspension having an etched conductive lead structure formed in a conductive patterned layer and having one or more openings passing through the suspension. Portions of the conductive lead structure project into the openings, and the back side of the head is placed to the suspension such that the termination pads are properly aligned with the openings. Last, a solder region is formed within each of the openings making electrical contact between the conductive lead structure and the termination pads.
摘要:
A flexure for use in a head gimbal assembly comprising a single narrow torsion beam that connects a suspension load beam to a slider support member. The flexure is centered underneath a read/write slider and may be comprised of a laminated material having a conductor layer, a dielectric layer and a support layer. A plurality of electrical leads may be formed in the conductor layer for attachment the slider. The slider is mechanically attached to the slider support member by a first set of solder balls the height of which create a space for accommodating deflections of the flexure and allowing the electrical leads to pass underneath the slider. Electrical connections to the slider are made using a plurality of right angle fillet joints between the slider and a second set of solder balls on the slider support member. The shape of the torsion beam may be varied to yield different levels of stiffness to pitch, roll and yaw movement of the flexure.
摘要:
A method for the fabrication of a data recording disk file slider-suspension assembly, the slider being of the type having an air bearing surface, a back side opposite the air bearing surface and a trailing edge having a read or write transducer formed as a thin film thereon with electrical leads formed solely on the trailing edge and terminating adjacent the slider back side at termination pads, and a suspension having etched conductive lead structures and conductive contact pads connected to the lead structures. The method comprising the steps of forming a solder bump on each of the termination pads and each of the contact pads, wherein one or more solder bumps are selectively flattened, mechanically attaching the back side of the slider to the suspension such that the termination pads are properly aligned with the contact pads, and heating the solder bumps so as to reflow the termination pad and contact pad bumps such that they electrically connect, wherein a selectively flattened bump extends along an axis defined by a point on one pad and a point on another pad when heated to make contact with another bump.
摘要:
In a data disk file a slider is mechanically attached to the suspension by means of reflowed solder balls. A pattern of solder contact pads is formed on the back side of the slider and a similar pattern of solder-wettable regions is formed on the suspension. Solder balls are formed on either the solder contact pads or the solder-wettable regions, the slider is located on the suspension so that the solder balls are in registration between the solder contact pads and solder-wettable regions, and the solder is heated to reflow, thereby forming solder joints as a mechanical connection between the slider and suspension. When a thin film transducer is formed on the slider trailing edge and the suspension is a laminated type with patterned conductors, solder balls are also formed on the transducer lead terminations on the trailing edge and on a row of solder-wettable regions on the suspension near the location where the trailing edge of the slider is to be located. In this embodiment, when the slider with thin film transducer, with solder balls on the lead terminations, is located over the suspension then all of the solder balls are heated. The solder balls for providing mechanical connection collapse during reflow, thereby causing the solder balls on the transducer lead terminations to come in contact with and flow together with the solder balls formed on the row of solder-wettable regions on the suspension. Thus the mechanical attachment of the slider is made simultaneously with the electrical connection of the transducer lead to the disk file read/write electronics.
摘要:
A copper base brazing alloy consisting of, in percent by weight, 25 to 40 manganese, 0 to 10 nickel, 0 to 10 iron, 0 to 6 indium and 0 to 10 tin with the combination of tin and indium being not less than 2, and the balance essentially copper, is suitable for brazing cemented carbide to steel in a temperature range 815.degree.-900.degree. C. (1500.degree.-1650.degree. F.). The brazing temperature of these filler alloys are at least 100.degree. F. lower than those of non-precious brazing filler alloys of the prior art used for this application and are considerably less expensive than prior art precious metal brazing alloys currently being used. The resulting cemented carbide to steel joints have high shear strength and good ductility.