摘要:
A system for checking the axial position of a bearing (30) inside an hole (31) of an E-block (29), preferably during the assembly of an HSA, comprises a reference system (3) that locates the E-block, a coupling element (17) that comes into contact with the bearing, a floating element (8) that, being connected to the coupling element, assumes the attitude of the bearing, two or more detection devices, for example optoelectronic, that cooperate with the floating element and detect at the same time, at checking areas spaced apart from each other, quantities indicative of the position and, in case, of the attitude of the bearing with respect to the E-block, and a processing unit (50) for receiving and processing the detected quantities. A corresponding method for checking comprises the steps of locating E-block and bearing to mutually movable parts of the reference system, detecting at the same time, at least at two checking areas spaced apart from each other, quantities indicative of the position and, in case, of the attitude of the bearing with respect to the E-block, and processing the detected quantities. The invention relates also to an equipment and a method for assembling HSAs, that respectively employ the above-mentioned system and method for checking the mutual position and, in case, the attitude of the bearing with respect to the E-block.
摘要:
An E-block actuator assembly having a plurality of arms separated by spaces formed concentrically about a hub. Each arm having a collar formed at one end that is fitted into the hub adjacent at least one spacer. The assembly also having a thermoplastic body molded about the hub and a portion of arms.
摘要:
Disc drives are made with an actuator designed with at least one asymmetrical arm having two masses that move out of phase. The arm is modified by removing a portion of the higher-energy (longitudinal) side, the one with the greater total time-averaged strain energy. This modification reduces the phase difference between the first and the second arm, particularly for a relevant frequency range of interest. Disc drives made by this method exhibit a generally reduced out-of-phase motion, enhancing performance during seeking and track following, especially for arms with two heads that interact with surfaces of opposing discs.
摘要:
A frictional connection device, wherein objects (1, 2) to be connected are pressed against each other and moved relatively each other so as to rub metal connection parts (3, 4) thereof against each other, whereby a frictional connection operation can be or stopped temporarily during the operation when the metal connection parts (3, 4) are frictionally connected to each other.
摘要:
A test method and apparatus for use with a plurality of magnetically sensitive elements (814) having a fixed relative physical sequence, and with a plurality of electrical lead sets (822) through each of which the magnetic field being experienced by a respective one of the magnetically sensitive elements (814) can be sensed. The method includes the steps of placing the magnetically sensitive elements in a variable magnetic field and determining a respective magnetic field setting at which each given one of the lead sets indicates the presence of a magnetic null. The results of such a test can be used to determine which lead sets are connected to which magnetic elements, and/or to determine whether at least one lead set is misconnected.
摘要:
The present invention relates to a head tester (30) for testing heads having a read element and a write element. The tester comprises a substrate (32) on which a read coil (36) is positioned to be sensitive to the write element of the head. A write coil (34) is also formed on the substrate and this coil is positioned such that the read element of the head to be tested is sensitive to the write coil.
摘要:
A suction nozzle (20) attracts and holds signal wires (14) by suction and positions and fixes the wires (14) to desired positions on a circuit board. As a result, the nozzle (20) can attract the wire (14) and easily hold it even if the ends of the wires (14) are spatially scattered, e.g., if the wires are somewhat away from the nozzle (20). Since the signal wires (14) are attracted into and held by the nozzle (20) in such a way, no excessive force is applied to the wires (14) over the sucking force of the nozzle (20) and the wires (14) are not cut during transfer even when they are transferred in the holding state.