Abstract: An assembly apparatus for a magnet assembly is disclosed. The assembly apparatus includes first and second assembly nests and an assembly slide operable between an advanced position relative to the assembly nests and a retracted position for assembly. As disclosed the assembly apparatus is used to assemble spacer posts between opposed magnet/backiron assemblies. The assembly apparatus includes spacer nests proximate to the assembly nests for assembly of spacers between the opposed magnet/backiron assemblies.

Abstract: A magnetizing apparatus for magnetizing magnets including an assembly construction for easy maintenance and service which does not need to be completely disassembly for maintenance or service of magnetizing components and which does not require extension recalibration prior to resuming production.

Abstract: A storage tray for storing magnetized magnets for assembly in a disc drive. The tray includes a base having a support surface and a cover sized to cover the support surface. The base is formed of a material having magnetic properties for attracting magnetized magnets for removably supporting the magnets until assembled in a voice coil motor.

Abstract: A magnet assembly including spacers having chamfered posts insertable in post holes of opposed spaced backirons. For assembly, chamfered posts are inserted into post holes on a first backiron. A second backiron is supported above the first backiron by an assembly slide to retain the second backiron against the magnetic attraction between the first and second backirons for preassembly alignment of the post holes relative to spacer posts. The assembly slide is withdrawn from the second backiron so that the second backiron is attracted toward the first backiron and spacer posts are inserted into post holes on the second backiron. A method for assembling a magnet assembly using an assembly slide to support a second backiron above a first backiron and withdrawing the slide from the second backiron to assemble components.

Abstract: A magnet assembly including spacers having chamfered posts insertable in post holes of opposed spaced backirons. For assembly, chamfered posts are inserted into post holes on a first backiron. A second backiron is supported above the first backiron by an assembly slide to retain the second backiron against the magnetic attraction between the first and second backirons for preassembly alignment of the post holes relative to spacer posts. The assembly slide is withdrawn from the second backiron so that the second backiron is attracted toward the first backiron and spacer posts are inserted into post holes on the second backiron. A method for assembling a magnet assembly using an assembly slide to support a second backiron above a first backiron and withdrawing the slide from the second backiron to assemble components.

Abstract: A storage tray for storing magnetized magnets for assembly in a disc drive. The tray includes a base having a support surface and a cover sized to cover the support surface. The base is formed of a material having magnetic properties for attracting magnetized magnets for removably supporting the magnets until assembled in a voice coil motor.

Abstract: A magnetizing apparatus for magnetizing magnets including an assembly construction for easy maintenance and service which does not need to be completely disassembly for maintenance or service of magnetizing components and which does not require extension recalibration prior to resuming production.

Abstract: An instrument for measuring alignment of a magnet relative to a pole plate for a voice coil motor of a disc drive. The instrument includes a base and a platform coupled to the base and adapted to support a plate. The platform including a platform hole. A set of incrementally sized pins are included. The set of incrementally sized pins have incremental diameter dimensions to provide a selection of pins for insertion through plate hole and platform hole to match the dimension of the pin relative to the actual plate hole dimension to limit movement of the plate and magnet during measurement to reduce measurement errors.

Abstract: An apparatus for merging magnetized magnet segments to form a composite magnet for assembly in a voice coil motor for a disc drive. The apparatus includes first and second magnet segment nests for removably supporting magnetized magnet segments for assembly. The magnet segment nests are supported for operation between first and second positions. In the first position, the first and second magnet segment nests are spaced and in the second position, the first and second magnet segment nests are located in close proximity to merge first and second magnet segments.

Abstract: A device for assembling a magnet assembly for a voice coil motor for a data storage device. The device including a base, spacer nests and first and second assembly blocks for supporting plates for assembly of the magnet assembly. The first and second assembly blocks including nest bases having an x-y axis and including x-y datum members. The plates are biased toward x-y datum members via clamps operably coupled to the nest base. Retainer members are operably coupled to the assembly blocks and aligned relative to the nest base to retain plate relative to nest base for assembly. The assembly blocks are movably coupled to the base to operate between a retracted position and an advanced assembly position. In the advanced assembly position, the first and second assembly blocks being aligned with the spacer nest supporting spacers for assembling the magnet assembly.

Abstract: A device for assembling a magnet assembly for a voice coil motor for a data storage device. The device including a base, spacer nests and first and second assembly blocks for supporting plates for assembly of the magnet assembly. The first and second assembly blocks including nest bases having an x-y axis and including x-y datum members. The plates are biased toward x-y datum members via clamps operably coupled to the nest base. Retainer members are operably coupled to the assembly blocks and aligned relative to the nest base to retain plate relative to nest base for assembly. The assembly blocks are movably coupled to the base to operate between a retracted position and an advanced assembly position. In the advanced assembly position, the first and second assembly blocks being aligned with the spacer nest supporting spacers for assembling the magnet assembly.

Abstract: A bonding apparatus for bonding a magnetic piece to a backiron includes a base and a back assembly next to the base and having at least one back surface. A front assembly having a front surface facing the back assembly has at least one aperture for a locating pin. The locating pin is slip fit into the aperture of the front assembly. In addition, a method for replacing locating pins is provided.

Abstract: A high energy magnet and backiron assembly of an actuator assembly of a storage disc. Multiple magnet segments are bonded together to form a high energy composite magnet. The high energy composite magnet is bonded to a backiron to construct a higher capacity actuator motor. The composite magnet is bonded to a backiron via a bonding assembly which includes magnet and backiron nests. Retainers are included to secure a composite magnet in the magnet nest and a backiron in the backiron nests. Retainers provide sufficient pressure to counteract the attraction force between the magnet supported in the magnet nest and the backiron in the backiron nest. The magnet and backiron nests are coupled to a base of the bonding assembly and operate between a non-operational position and a bonding position. In the non-operatiornal position, the magnet nest and backiron nest are supported a spaced distance apart.

Abstract: A flux sensitive device for creating electrical signals from magnetic flux produced by a magnetic piece has a first member defining a surface for sliding the magnetic piece. A conductive trace and a backiron are located proximate the first member such that the conductive trace is between the first member and the backiron. The position of the conductive loop is fixed relative to the backiron and the first member. The backiron forms a magnetic flux path with the magnetic piece and the conductive trace creates an electrical signal when magnetic flux crosses the conductive trace.

Abstract: A method of calibrating a bonding station involves placing a first surface of calibration tool in contact with a fixed surface of a movable assembly. The position of an adjustable surface of the movable assembly is then changed so that the adjustable surface contacts a second surface of the calibration tool. In addition, a calibration tool for calibrating the bonding station is provided.