摘要:
An electric motor capable of ensuring insulation of proximal portions of coil edges of a stator projecting from end of a stator core, and a method of insulating the proximal portions of the coil edges of the stator. The insulation sheet has a folding portion for folding one or more coils of the same phase and two insertion portions extending from the folding portion so that distal ends are positioned away from a centerline of the folding portion. One or more coils of the same phase are folded by the folding portion and the two inserting portions are inserted into the slot or slots from which the one or more coils project. The inserting portions are drawn from inside of the stator core so that the folding portion spreads to fold the proximal portions of the coils. The inserting portions are securely held between the wall of the slots and the coils to prevent the insulation sheet from displacement, inclination and slip off to securely insulate the coils of different phases.
摘要:
A method of insulating the proximal portions of the coil edges of the stator. The insulation sheet has a folding portion for folding one or more coils of the same phase and two insertion portions extending from the folding portion so that distal ends are positioned away from a centerline of the folding portion. One or more coils of the same phase are folded by the folding portion and the two inserting portions are inserted into the slot or slots from which the one or more coils project. The inserting portions are drawn from inside of the stator core so that the folding portion spreads to fold the proximal portions of the coils. The inserting portions are securely held between the wall of the slots and the coils to prevent the insulation sheet from displacement, inclination and slip off to securely insulate the coils of different phases.
摘要:
An electric motor capable of ensuring insulation of proximal portions of coil edges of a stator projecting from end of a stator core, and a method of insulating the proximal portions of the coil edges of the stator. The insulation sheet has a folding portion for folding one or more coils of the same phase and two insertion portions extending from the folding portion so that distal ends are positioned away from a centerline of the folding portion. One or more coils of the same phase are folded by the folding portion and the two inserting portions are inserted into the slot or slots from which the one or more coils project. The inserting portions are drawn from inside of the stator core so that the folding portion spreads to fold the proximal portions of the coils. The inserting portions are securely held between the wall of the slots and the coils to prevent the insulation sheet from displacement, inclination and slip off to securely insulate the coils of different phases.
摘要:
Wedge guides 12 for holding a wedge 11 are mounted onto a base 10, and a stripper 15 is fixed to the other end of the wedge guide 12. A blade holder 13 including a plurality of blades 16 vertically installed is held in such a manner as to be freely advanceable and retractable in an up-and-down direction. A coil 30 wound is inserted between the blades 16, and alignment tool 7 is inserted at the tip ends of the blades. A stator iron core 40 is inserted into the alignment tool 7, and the stator iron core 40 is moved until the tip ends of the blades 16 penetrate the stator iron core 40. Thereafter, the stator iron core 40 and a connecting rod 19, the other end of which being connected to the blade holder 13, are pushed by a stator pusher 50, whereby the blade holder 13 is also caused to move together with the stator iron core 40 to insert the coil 30 into grooves in the stator iron core 40.
摘要:
A control unit (10) for a machine tool comprises: at least one vibration detection means (31 to 33) attached to a main shaft portion (30) of a machine tool or a movable body moving relative to the main shaft portion (30), for example, attached to a holding table for a workpiece; a storage means (11) for storing a vibration signal detected by the vibration detection means being related to operation information of the machine tool; a collision judgment means (12) for judging that a collision has occurred in the case where the vibration signal stored in the storage means exceeds a previously determined threshold value when comparing the vibration signal with the threshold value; and an output means (13) for outputting the vibration signal at the time of judging the occurring of the collision and also outputting the operation information stored in the storage means related to the vibration signal in the case where the collision judgment means judges that the collision has occurred. By the above constitution, the control unit is capable of grasping a specific circumstance of collision and quickly determining a cause of collision.
摘要:
A control unit for a machine tool at least one vibration detection device attached to a main shaft portion of a machine tool or a movable body; a storage device for storing a vibration signal detected by the vibration detection device being related to operation information of the machine tool; a collision judgment device for judging that a collision has occurred; and an output device for outputting the vibration signal at the time of judging the occurring of the collision. By the above constitution, the control unit is capable of grasping a specific circumstance of collision and quickly determining a cause of collision.
摘要:
An impact detection device includes a vibration sensor attached to an object, a receiving unit for receiving the output signal from the vibration sensor, a peak hold circuit for holding the largest value in a continuous output signal received by the receiving unit as a peak value, and an output unit for outputting the peak value held by the peak hold circuit as data for judging collision of the object.
摘要:
A cooling drum for metal cast strip by continuous casting has dimples 40 to 200 μm in average depth and 0.5 to 3 mm in diameter of circle equivalent formed on a plated peripheral surface of the cooling drum, adjacent to each other at rims of the dimples; and a film, containing oxides of at least one member selected from the group consisting of Ni—W, Ni—Co—W, Cr, Ni—Fe and Ni—Al, is formed on the peripheral surface.
摘要:
Dimples, preferably 40 to 200 μm in average depth and 0.5 to 3 mm in diameter of circle equivalent, are formed on the peripheral surface of a cooling drum, adjacent to each other at the rims of the dimples; and fine humps (preferably, fine humps 1 to 50 μm in height and 5 to 200 μm in diameter of circle equivalent on the surfaces of the dimples and/or fine humps 1 to 50 μm in height and 30 to 200 μm in diameter of circle equivalent at the rims of the dimples), fine holes (preferably, fine holes 5 μm or more in depth and 10 to 200 μm in diameter of circle equivalent), or fine unevenness (preferably, fine unevenness 1 to 50 μm in average depth and 10 to 200 μm in diameter of circle equivalent) are formed at the rims and/or on the indented surfaces of said dimples.
摘要:
In a stick-type ignition coil device for engines, a primary spool is disposed outside a secondary coil. The primary spool is made of PBT (polybuthylene telephthalate) having a low melting viscosity and a high flowability as a resin base material. The resin base material is admixed with an olefin rubber in 5 wt. %, glass fibers in 12.5 wt. % and silica in 12.5 wt. %. A primary coil 24 comprises a wire body coated with PET (polyethylene telephthalate), silicone or wax as a separating member, and is wound around the primary spool. The growth of trees in the primary spool 23 restricted even when electrical discharges occur between a secondary coil and the primary coil and the primary spool is eroded by the electrical discharges, because silica is added in the primary spool.