摘要:
When stator winding wires of respective phases are concentratedly wound on a plurality of tooth portions provided on a stator iron core via insulating bobbins the stator winding wires of the respective phases are wound in winding spaces in slot sides so that winding heights become gradually higher toward outside diameter sides from inside diameter sides of the insulating bobbins, and in spaces formed by the stator winding wires, at the radial insides of the insulating bobbins, at outsides in an axial direction relative to the stator winding wires, connecting wires of the stator winding wires of the respective phases and a neutral point at which distal ends thereof are star-connected are placed along the spaces.
摘要:
When stator winding wires of respective phases are concentratedly wound on a plurality of tooth portions provided on a stator iron core via insulating bobbins the stator winding wires of the respective phases are wound in winding spaces in slot sides so that winding heights become gradually higher toward outside diameter sides from inside diameter sides of the insulating bobbins, and in spaces formed by the stator winding wires, at the radial insides of the insulating bobbins, at outsides in an axial direction relative to the stator winding wires, connecting wires of the stator winding wires of the respective phases and a neutral point at which distal ends thereof are star-connected are placed along the spaces.
摘要:
Provided is an electric motor in which magnets are reduced in size, thus achieving a reduction in cost, and in which a magnetic torque and a reluctance torque are effectively used by adjusting the magnetic flux density to improve the efficiency, thus achieving a reduction in size and cost. The electric motor is equipped with a rotor that includes a cylindrical rotor iron core in which main magnetic poles and auxiliary magnetic poles are alternately disposed in the circumferential direction, a substantially V-shaped magnet insertion hole that is provided for each of the main magnetic poles and whose convex portion faces a rotor center and is centered on a d-axis passing through the rotor center and the circumference-wise center of the main magnetic pole, and two magnets per pole that are embedded in the magnet insertion hole in a substantially V-shaped manner.
摘要:
Provided is an electric motor in which magnets are reduced in size, thus achieving a reduction in cost, and in which a magnetic torque and a reluctance torque are effectively used by adjusting the magnetic flux density to improve the efficiency, thus achieving a reduction in size and cost. The electric motor is equipped with a rotor that includes a cylindrical rotor iron core in which main magnetic poles and auxiliary magnetic poles are alternately disposed in the circumferential direction, a substantially V-shaped magnet insertion hole that is provided for each of the main magnetic poles and whose convex portion faces a rotor center and is centered on a d-axis passing through the rotor center and the circumference-wise center of the main magnetic pole, and two magnets per pole that are embedded in the magnet insertion hole in a substantially V-shaped manner.
摘要:
A server device used in a mobile communication system which transfers a multicast packet sent from a sending terminal to a receiving terminal through a packet transfer network, includes: a multicast tree determination unit configured to determine a multicast tree showing a transfer route of the multicast packet; and an instruction unit configured to instruct a multicast-corresponding router within the packet transfer network to prepare a multicast transfer table used for transferring the multicast packet, in accordance with a determined multicast tree.
摘要:
An apparatus for displaying a ladder diagram in a numerical control system having a programmable sequence control function in which sequence processing is executed based on a sequence program to deliver commands from a numerical control device to a machine and signals from the machine to the numerical control device. A display unit displays the sequence program in the form of a ladder diagram made up of relays. The pictures of ladder diagrams in the sequence program which are displayed on a screen are generated by pattern and character information stored in a character generator. The identification of a relay of interest or the memory address storing the state of the relay is entered, an item of sequence data indicating the conditions which turn the relay on are selected, and a ladder diagram segments indicative of the conditions are displayed on the basis of the sequence data.
摘要:
The invention relates to a numerical control system equipped with a computerized man-machine interface controller (MMC unit) and including an NC unit (11), a programmable machine controller (13) for executing at least sequence control based on signals from the NC unit (11) and a machine tool (12), a computerized man-machine interface controller (14) having at least a CRT (14d) and a keyboard (14e), and a data exchange controller (15), wherein data are exchanged among the NC unit (11), programmable machine controller (13) and man-machine interface controller (14) under the control of the data exchange controller (15).
摘要:
A graphic is prepared by providing the starting points or end points of straight lines and circular arcs with identifiable marks such as black circles. Reading the graphic by an image reader (2h). A display controller of a display unit (2d) displays each of the graphic elements and black circles on a display screen as well as inquiries calling for the coordinates of the positions at which the black circles are provided and the nature of the graphic elements between black circles. The black circles relating to inquiries are made distinguishable from other black circles by being displayed in e.g. blinking fashion. Thereafter, the coordinates of a black circle which is made to blink and the nature of a graphic element (i.e. whether the element is a straight line or circular arc) are inputted from a keyboard (2f) in response to the inquiries, whereupon the next black circle blinks and the relevant inquiry is displayed. Data are thereafter inputted in similar fashion until all of the graphic data are finally inputted.
摘要:
Operation information is stored in a memory for numerically controlling a numerical control machine such as a machining tool. This information is displayed on a desired display, and an item of operation information is selected from the operation information displayed, so that the numerical control machine can be controlled in accordance with a predetermined program. Thus, a desired arbitrary item of operation information can be selected using a single machine operator's panel.
摘要:
The present invention increases screw cutting accuracy and simplifies the control of a screw cutting control system which performs screw cutting through the use of a numerically-controlled machine tool. A tapper (TPP) connected to a spindle, holds a tap (TAP) in a manner to be movable in the axial direction of the spindle, transmits the rotation of the spindle to the tap (TAP) for a predetermined range of forward axial movement of the tap (TAP) and transmits the rotation of the spindle to the tap (TAP) when the spindle is reversed. During screw cutting, feed by a feed motor (SZ) stops after the tap (TAP) enters a workpiece and the screw cutting is effected by the thrust of the tap itself resulting from the rotation of the spindle. The sequence of screw cutting is commanded by one block of command data.