JP5479954B2 - Coil manufacturing method - Google Patents

Coil manufacturing method Download PDF

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JP5479954B2
JP5479954B2 JP2010051703A JP2010051703A JP5479954B2 JP 5479954 B2 JP5479954 B2 JP 5479954B2 JP 2010051703 A JP2010051703 A JP 2010051703A JP 2010051703 A JP2010051703 A JP 2010051703A JP 5479954 B2 JP5479954 B2 JP 5479954B2
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winding
coil
phase
bobbin
core
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JP2011188636A (en
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浩司 渡邊
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クロノファング株式会社
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Description

  The present invention relates to a coil manufacturing method, and more particularly to a manufacturing method suitable for a coil for a linear motor or a solenoid.

  There are various types of linear motors, but when a large driving force is not required, the linear motor is often composed of a combination of a permanent magnet and a coil. Such a linear motor using a combination of a permanent magnet and a coil is applied as a driving source for a precision microstage or a precision positioning stage, for example, in the field of semiconductor manufacturing equipment. This is because the linear motor drive mechanism has a higher drive speed and higher positioning accuracy than the ball screw drive mechanism that has been the mainstream until now, and high repeat positioning accuracy, overshoot and undershoot during driving and stopping. This is because there are many advantages such as a small speed ripple at the time of constant speed movement.

  A three-phase linear motor proposed by the present inventor will be described with reference to FIG. This linear motor is disclosed in Patent Document 1.

  In FIG. 11, the linear motor includes a shaft body (hereinafter referred to as a stator) 10 containing a plurality of electromagnet coils (hereinafter abbreviated as coils) continuously arranged, and magnetic flux from these coils. And a movable magnet body (hereinafter referred to as a movable element) 20 that can travel in the same direction as the direction in which the stator 10 extends. The stator 10 is bridged between two brackets 31 fixed on the base 30 at intervals.

  With reference also to FIG. 12, the internal structure of the stator 10 and the needle | mover 20 is demonstrated. The stator 10 includes a hollow shaft-shaped center core 11, a plurality of coils 12 mounted around the center core 11, and a pipe 13 combined to cover the outer peripheral side of the plurality of coils 12. The coil 12 includes a U-phase coil, a V-phase coil, and a W-phase coil connected to the motor connection terminal of the control driver 40, and each of these coils has a magnetic pole axis around the center core 11 and an axis of the center core 11. It is mounted over the travel range of the mover 20 so as to be parallel.

  The mover 20 includes a plurality of annular permanent magnets 21 that can surround the pipe 13 and a magnet case 22 that accommodates the plurality of permanent magnets 21. The plurality of permanent magnets 21 have the same length dimension, are combined in series so that adjacent magnetic poles are opposite to each other, and the magnetic pole axes are parallel to the axis of the center core 11, thereby forming a magnet case 22. Is housed in. The sizes of the coil 12 and the permanent magnet 21 vary depending on conditions such as thrust and the overall size of the linear motor, but all the permanent magnets 21 have the same axial dimension, and in the case of a three-phase linear motor, the axial dimension has the same dimension. The coil 12 is made to be three times the dimension in the magnetic pole axis direction. The permanent magnet may have a U-shaped cross section.

  The inner diameter of the pipe 13 is slightly larger than the outer diameter of the coil 12, and the outer diameter is slightly smaller than the inner diameter of the permanent magnet 21. In this way, gaps are formed between the outer surface side of the pipe 13 and the inner surface side of the permanent magnet 21 and between the outer surface side of the coil 12 and the inner surface side of the pipe 13. And the hollow part of the center core 11, the gap between the outer surface side of the coil 12 and the inner surface side of the pipe 13 depending on the case is utilized as a cooling space by gas or liquid. The pipe 13 is made of a nonmagnetic metal material such as stainless steel, but other materials such as a resin material may be used. The pipe 13 may be omitted.

  The mover 20 needs to be moved in a state of maintaining a gap with respect to the outer periphery of the pipe 13, that is, in a non-contact state with the pipe 13. This is realized by the guide block 23 and the guide rail 32. That is, two guide blocks 23 are combined with the magnet case 22, and these two guide blocks 23 are slidably guided by the guide rails 32 arranged on the base 30 along the traveling direction of the mover 20. ing.

  Returning to FIG. 11, the linear scale 33 for the linear encoder is disposed on the base 30 along the traveling direction of the movable element 20, and the encoder head 24 is provided on the magnet case 22 so as to face the linear scale 33. ing. A detection signal from the encoder head 24 is input to the control driver 40 via a caterpillar-shaped cable carrier (not shown) having a flexible signal cable. Needless to say, the detection signal from the encoder head 24 is used for positioning control of the movable element 20. Each coil 12 in the stator 10 is connected to a three-phase power cable 35 via a bracket 31, and the power cable 35 is connected to a control driver 40. When connected to a single-phase 100V AC power supply 50, the control driver 40 has a built-in single-phase to three-phase converter, and each of the U-phase, V-phase, and W-phase is a U-phase coil, V-phase coil, and W-phase. Connected to the coil. However, the U-phase, V-phase, and W-phase of the power source are not necessarily connected to the U-phase coil, V-phase coil, and W-phase coil in a one-to-one relationship. There are various forms of connection between the power source and the U-phase coil, V-phase coil, and W-phase coil. Also connected to the control driver 40 is a computer 41 such as a personal computer as control data input means and data processing means. Based on the data given from the computer 41, the movable element 20 is positioned using the detection signal from the encoder head 24. Control and speed control are executed by fully closed loop control.

  FIG. 13 shows an example of connection in the case of using three sets of the basic configuration including three U-phase coils, W-phase coils, and V-phase coils, that is, a total of nine coils and a control driver 40. Indicates. Here, for the U-phase coil, the winding start end S of the first coil U1 is connected to the U terminal of the control driver 40, and the winding end E of the first coil U1 is connected to the winding end E of the second coil U2. Connected to. The winding start end S of the second coil U2 is connected to the winding start end S of the third coil U3, and the winding end end E of the third coil U3 is connected to the common terminal. Similarly, for the W-phase coil, the winding end E of the first coil W1 is connected to the W terminal of the control driver 40, and the winding start end S of the first coil W1 is connected to the winding start end S of the second coil W2. Connected to. The winding end E of the second coil W2 is connected to the winding end E of the third coil W3, and the winding start S of the third coil W3 is connected to the common terminal. On the other hand, for the V-phase coil, the winding start end S of the first coil V1 is connected to the V terminal of the control driver 40, and the winding end E of the first coil V1 is connected to the winding end E of the second coil V2. Connected. The winding start end S of the second coil V2 is connected to the winding start end S of the third coil V3, and the winding end E of the third coil V3 is connected to the common terminal.

  In short, when nine coils are provided as shown in FIG. 13, for two phases, an intermediate coil among the three coils, a coil on both sides thereof, a winding start end S, and a winding end E are provided. For the remaining one phase, the coils on both sides of the three coils are connected to the coil between them with the winding start end S and winding end E reversed.

  Speaking of the case where there are 12 or more coils, that is, 4 or more sets of coils, a plurality of U-phase coils, a plurality of W-phase coils, and a plurality of V-phase coils in the plurality of sets are connected in series for each phase. Then, it is connected to the control driver 40 by star connection. In addition, the plurality of coils in the two phases are connected so that the magnetic poles in the even-numbered set are opposite to the magnetic poles in the odd-numbered set, and the plurality of coils in the remaining one phase have the magnetic poles in the odd-numbered set in the two phases. Are connected in such a way that the magnetic poles in the odd-numbered sets of the plurality of coils are opposite to the magnetic poles in the even-numbered sets.

  The above linear motor is suitable for miniaturization, and by fixing the coil and making the permanent magnet movable, the cooling structure for heat generation in the coil can be simplified, and power is supplied to the movable part. Since there is no need, there is no need to drag a flexible power cable, and there are various advantages such as fewer troubles of disconnection due to dragging.

JP 2002-291220 A

  Incidentally, a coil for a three-phase linear motor as shown in FIG. 13 is manufactured as follows.

  Referring also to FIG. 14, when nine coils are mounted on the outer periphery of the center core 11, three U-phase coils U1 to U3, three V-phase coils V1 to V3, and three W-phase coils W1. ˜W3 are arranged in phase order, connected in series for each phase, and connected to the control driver 40 by star connection. In other words, when there are three sets of coils for each of the U phase, the V phase, and the W phase, as described in relation to FIG. 13, the three coils in the two phases (the U phase and the V phase in FIG. 13) The three coils in the remaining one phase (the W phase in FIG. 13) are connected so that the magnetic poles in the even group are opposite to the magnetic poles in the odd group. The poles in the odd set of coils are opposite in orientation, and the poles in the even set are connected in the opposite direction to the poles in the even set of three coils in the two phases.

  That is, the U-phase coils U1 to U3, the V-phase coils V1 to V3, and the W-phase coils W1 to W3 shown in FIG. In order to make the orientation, it is necessary to change the connection for each coil. For example, regarding the U-phase coils U1 and U2 in FIG. 13, the winding end E of the U-phase coil U1 in FIG. 14 needs to be soldered to the winding end E instead of the winding start end S of the U-phase coil U2. There is.

  That is, the conventional coils for linear motors require the soldering connection of the windings for each coil.

  An object of the present invention is to produce a coil having a plurality of coils per phase and capable of forming a plurality of coils per phase with a single continuous winding even when polarity needs to be considered. It is to provide a method.

  According to a first aspect of the present invention, there is provided a coil manufacturing method including a step of forming a coil having two or more phases in which one phase is composed of a plurality of coils on the outer periphery of an axial core, Grooves extending in the axial direction are formed on the outer periphery over a range longer than the coil formation region, and a step of preparing a winding corresponding to each phase for each phase, and a winding start portion of the winding of each phase The step of extending from the one end side to the other end side of the core in the state accommodated in the groove, and in the state where the winding other than the winding of the phase to be wound first is accommodated in the groove, A first step of winding a winding of a phase to be initially wound over a predetermined range to form an initial coil; and after the completion of the initial coil formation, the initial winding following the first coil The second work for accommodating the winding of the phase to perform in the groove With the windings other than the winding of the phase to be wound next received in the groove, the winding of the phase to be wound next is adjacent to the first coil. A third step of forming the next coil by winding over a predetermined range, and after the formation of the next coil, the winding of the next winding phase following the next coil is formed in the groove And a fourth step of housing the coil.

  The method for manufacturing a coil according to the present invention may be realized in the following form.

  A plurality of bobbin mountings for preparing windings corresponding to the respective phases wound around bobbins for each phase, and having a holding portion for holding the core at one end thereof, and individually mounting the bobbins for each phase And holding the one end side of the core by the holding portion of the chuck member, and bobbins other than the phase to be wound are in a state of being mounted on the bobbin mounting portion. The bobbin of the phase to be performed is removed from the bobbin mounting portion and is held in a state where the winding of the phase to be wound is held at a substantially right angle to the core at a predetermined position near the region where the winding is to be performed. Turn the winding of the phase to be turned.

  The chuck member holding the core is driven to rotate about the central axis of the core, thereby winding the winding of the phase to be wound, or the bobbin of the phase to be wound Is wound around the central axis of the core at a location close to the region where the winding is to be performed, thereby winding the winding of the phase in which the winding is performed.

  A bobbin body made of an insulating material is attached to a part of the core that is to form the coil, and the bobbin body has coils corresponding to the number of coils to be formed by a plurality of partitions provided at equal intervals. A slit is formed in a region corresponding to the groove in order to form a receiving portion and expose the groove formed in the core.

  The winding of the winding phase of the winding is performed after the coil formation on the coil receiving portion is completed, the winding of the winding phase following the coil is in the axial direction of the coil receiving portion. It is performed so that it may be located in the edge part near the said chuck member among both ends.

  When at least one of the plurality of coils in the one phase has a polarity opposite to that of the coil formed in the first step, a bobbin wound with a winding for forming the at least one coil In a state where the winding for forming the at least one coil at a point symmetrical with respect to the predetermined location is held substantially perpendicular to the core, and the winding direction of the winding is Winding of the winding for forming the at least one coil is performed in the direction opposite to the winding direction of the winding in the first step.

  According to the second aspect of the present invention, a coil having two or more phases including first and second phases each having a plurality of coils is formed on the outer periphery of a cylindrical bobbin body made of an insulating material. The manufacturing method of the coil including the process to perform is provided.

  In the manufacturing method according to the second aspect, the winding corresponding to each phase is prepared for each phase, and the winding start end of the first phase winding to be wound first is on one end side of the bobbin body. A first step of winding the first phase winding around the first region around the bobbin body in the derived state to form a first coil of the first phase; The winding start end of the second phase winding to be rotated is led out to one end side of the bobbin body, and the second phase winding is wired along the outer periphery of the first coil. A second step of winding the second phase winding around a second region around the bobbin body adjacent to the first coil to form a first coil of the second phase; ,including. In particular, in the manufacturing method according to the second aspect, when the N-th coil (N is a positive integer) is formed by winding the first-phase winding, the first-phase (N -1) In the state where the first phase winding connected to the winding end of the first coil is wired along the outer circumference of the (N-1) th coil of the second phase When the N-th coil is formed while the N-th coil is formed by winding the second-phase winding, at the end of winding of the (N-1) -th coil of the second phase The second phase N-th coil is formed in a state where the connected second-phase winding is wired along the outer periphery of the first-phase N-th coil. To do.

  According to the method for manufacturing a coil according to the present invention, even if the coil is composed of a plurality of coils per phase and coils having different polarities are present, continuous winding with one winding is possible. Since a plurality of coils can be formed in the form, secondary connection such as soldering is not required, and the risk of ground fault and short circuit can be greatly reduced.

  Since no physical connection (soldering or the like) is required between a plurality of coils per phase, it is also effective in reducing the size of the coil unit.

It is a figure for demonstrating the structural member prepared in 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 1st operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 2nd operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 3rd operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 4th operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 5th operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 6th operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 7th operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 8th operation | work of 1st Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure which shows the state after formation of nine coils was complete | finished by the manufacturing method of the coil by the 1st Embodiment of this invention. It is a figure for demonstrating the linear motor proposed by this inventor with which application of this invention is considered, and its peripheral device. It is a figure for demonstrating the internal structure of the linear motor shown by FIG. It is a figure for demonstrating the connection form of the three-phase coil in the linear motor shown by FIG. It is the figure which showed the arrangement | positioning form of the several coil which comprises the three-phase coil shown by FIG. It is sectional drawing of the principal part of the linear motor with which this invention can be applied. It is a figure for demonstrating the structural member prepared in 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 1st operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 2nd operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 3rd operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 4th operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 5th operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 6th operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 7th operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure for demonstrating the 8th operation | work of 2nd Embodiment of the manufacturing method of the coil which concerns on this invention. It is a figure which shows the state after formation of nine coils was complete | finished by the manufacturing method of the coil by the 2nd Embodiment of this invention. It is a figure for demonstrating the application to the linear motor which reciprocates the track | orbit with a curvature as a modification of the 2nd Embodiment of this invention.

(First embodiment)
Below, with reference to drawings, 1st Embodiment of the manufacturing method of the coil which concerns on this invention is described in work order.

  1st Embodiment is an example applied when manufacturing the stator 10 (three-phase coil) for linear motors demonstrated in FIG.

  FIG. 1 shows components suitable for producing a three-phase coil for a linear motor consisting of nine coils as described in FIG. In the first embodiment, in addition to the three sub-bobbins 100U, 100V, and 100W, in which the windings are wound in advance separately, and the disc-shaped bobbin chuck 200 that can be rotated with these sub-bobbins attached, Although the coil unit 300 is prepared as a constituent member, the three sub-bobbins and the bobbin chuck 200 are constituent members necessary for the manufacturing operation, and the coil unit 300 becomes a part of the three-phase coil.

  The bobbin chuck 200 has a plurality of (six in this case) sub-bobbin mounting portions 210 on which the sub-bobbins can be mounted on one surface side, with a circumferential interval therebetween, and the coil unit 300 at the central portion on one surface side. It has the holding | maintenance part 220 which can hold | maintain one end side. Here, the sub bobbin mounting portion 210 is a shaft body that holds the sub bobbin by being inserted into a through hole at the center of the sub bobbin, and the holding portion 220 is a cylindrical receiving portion into which one end side of the coil unit 300 can be inserted. have. Although not shown, the bobbin chuck 200 is installed on a table or the like so that it can be rotated about its center by a rotation drive mechanism. For this reason, it is desirable that the sub bobbin is held in a structure that does not rotate with respect to the sub bobbin mounting portion 210 and does not easily fall off from the sub bobbin mounting portion 210. On the other hand, it is desirable that the coil unit 300 is also held by a structure that does not rotate with respect to the holding unit 220 and does not easily fall off the holding unit 220. The rotation prevention can be realized by, for example, a key and a key groove. In the following, it is assumed that the sub-bobbins 100U, 100V, and 100W are for forming U-phase, V-phase, and W-phase coils, respectively.

  The coil unit 300 includes a hollow core body 310 made of a magnetic material and serving as the center core 11 described with reference to FIG. 12, and a bobbin body 320 attached and fixed to the outer periphery of the core body 310. The bobbin body 320 is made of an insulative resin material and is not shown in FIG. 12, but in order to be able to form nine coils, each defining a coil length and partitioned into an insulating state. A plurality of bowl-shaped partitions 321 are provided at equal intervals. Hereinafter, a portion between two adjacent partitions 321 in the bobbin body 320 may be referred to as a coil receiving portion. A groove 311 extending along the central axis is formed on the outer periphery of the core body 310 over a longer range than the bobbin body 320. For reasons described later, the groove 311 needs to be exposed from the bobbin body 320. For this reason, the bobbin body 320 is formed with a cut 322 (FIG. 2) along the groove 311 of the core body 310. That is, the bobbin body 320 has a substantially C-shaped cross section.

  FIG. 2 is a view for explaining a first operation associated with the manufacture of the coil, and one end portion of the core body 310 of the coil unit 300 is set in the holding portion 220 of the bobbin chuck 200. Hereinafter, one end of the coil unit 300 on the holding unit 220 side may be referred to as a root side, and the opposite end of the coil unit 300 may be referred to as a distal end side.

  FIG. 3 is a diagram for explaining the second operation associated with the manufacture of the coil, and the sub bobbins 100U, 100V, and 100W are mounted on the three adjacent sub bobbin mounting portions 210 of the bobbin chuck 200, respectively. At this time, a part of the windings 110U, 110V, and 110W wound around the sub bobbins 100U, 100V, and 100W is pulled out as a winding start portion, and each is extended to the tip side of the groove 311 while being accommodated in the groove 311. The respective tip portions are temporarily fixed to the core body 310 with an adhesive tape or the like.

  FIG. 4 is a view for explaining a third work associated with the manufacture of the coil, and particularly a work for starting the formation of the U-phase coil U1 shown in FIG. In this work, first, the sub bobbin 100U is removed from the sub bobbin mounting portion 210, and the winding 110U is substantially perpendicular to the central axis of the core body 310 near the tip of the first coil receiving portion from the tip side of the coil unit 300. In this state, the sub bobbin 100U is held. In this state, the sub bobbin 100U is held by a holding mechanism (not shown), but the sub bobbin 100U is not completely fixed, and moves to some extent in the direction of the central axis or in a direction perpendicular thereto (direction approaching or moving away from the coil unit 300). Held in a possible state.

  FIG. 5 is a view for explaining a fourth work associated with the manufacture of the coil, and is a view for explaining a winding winding work for the U-phase coil U1 shown in FIG. In this operation, the bobbin chuck 200 is driven to rotate in the direction of the arrow shown (clockwise in FIG. 5). As a result, the coil unit 300 rotates to start winding the winding 110U around the first coil receiving portion. At this time, the windings 110V and 110W are temporarily attached to the core body 310 with an adhesive tape or the like so that the winding 110V of the sub bobbin 100V and the winding 110W of the sub bobbin 100W in the groove 311 do not fall out of the groove 311 due to rotation. It is desirable to keep it fixed.

  As the coil unit 300 rotates, the winding position of the winding 110U shifts. When the winding position shifts to the opposite end of the coil receiving portion, the first layer winding ends, but the coil unit 300 rotates. Is maintained, and the winding of the second layer is performed by shifting the winding position toward the tip side. When the winding position is shifted to the end of the coil receiving portion, the second layer winding is finished, and then the third layer winding is started in the same manner as the first layer described above.

  FIG. 6 is a view for explaining the fifth work associated with the manufacture of the coil, and is a view for explaining the work after the winding winding work of the U-phase coil U1. When the winding winding operation of the U-phase coil U1 having a desired number of turns is completed, the rotation of the bobbin chuck 200 is stopped. At this time, it is preferable that the groove 311 of the core body 310 is located above. This is because when the winding operation of the U-phase coil U1 is completed, it is necessary to return the sub bobbin 100U to the sub bobbin mounting portion 210 of the bobbin chuck 200, and at this time, the winding 110U is accommodated in the groove 311. It is necessary. FIG. 6 shows this state.

  After the end of the formation of the U-phase coil U1, the winding 110U following the U-phase coil U1 is located at the end on the side close to the bobbin chuck 200 in both axial ends of the coil receiving portion. This is due to the following reason.

  When the winding winding operation is completed, it is necessary to return the sub bobbin 100U to the sub bobbin mounting portion 210 while accommodating the winding 110U in the groove 311 without getting over the U-phase coil U1 after the winding ends. For this purpose, the winding position of the winding 110U at the end of the winding winding operation is closer to the end closer to the bobbin chuck 200 (opposite end) of the axial ends of the coil receiving portion. Need to be. This can be realized by setting the number of winding layers of the U-phase coil U1 to an odd number. If there is a situation where the number of winding layers of the U-phase coil U1 must be an even number, the winding position at the beginning of winding 110U is set to the bobbin chuck 200 at both ends in the axial direction of the coil receiving portion. Needless to say, it may be closer to the end near the end.

  The above points are the same in the winding work of the V-phase coil and the W-phase coil.

  FIG. 7 is a diagram for explaining a sixth operation associated with the manufacture of the coil. In particular, in order to reverse the polarity of the coil, the winding direction of the winding is changed to the winding of the U-phase coil U1. It is a figure for demonstrating the coil | winding winding operation | work performed in the direction opposite to the time of an operation | work.

  Note that the winding direction of the windings in the first set of coils is opposite to that of the W-phase coil W1 in FIGS. 13 and 14, which is the third winding winding operation in order. However, in order to shorten the description, here, the winding direction of the winding is reversed for the second time, and the description will be made assuming that it is the V-phase coil V1.

  In this operation, the sub bobbin 100V is removed from the sub bobbin mounting portion 210, and on the side opposite to the holding position of the sub bobbin 100U near the tip side of the second coil receiving portion from the tip side of the coil unit 300, The sub bobbin 100V is held in a state where the winding 110V is substantially perpendicular to the central axis of the core body 310. The holding of the sub bobbin 100V in this state is also performed by a holding mechanism (not shown) and is held in a state in which the sub bobbin 100V can move to some extent in the central axis direction or a direction perpendicular thereto (direction approaching or moving away from the coil unit 300).

  FIG. 8 is a view for explaining a seventh work associated with the manufacture of the coil, and is a view for explaining a winding winding work for the V-phase coil V1. In this operation, the bobbin chuck 200 is rotationally driven in the direction indicated by the arrow in FIG. 8 (counterclockwise direction in FIG. 8) opposite to the winding operation of the U-phase coil U1. As a result, the coil unit 300 rotates in the opposite direction to that of the winding operation of the U-phase coil U1, so that the winding of the winding 110V to the second coil receiving portion starts. As in the winding operation of the U-phase coil U1, the windings 110U and 110W are arranged so that the winding 110U of the sub bobbin 100U and the winding 110W of the sub bobbin 100W in the groove 311 do not fall out of the groove 311 due to rotation. It is desirable to temporarily fix the core body 310 with an adhesive tape or the like.

  As the coil unit 300 rotates, the winding position of the winding 110V shifts to the bobbin chuck 200 side, and the winding of the first layer is completed when the winding position shifts to the opposite end of the second coil receiving portion. However, the rotation of the coil unit 300 is maintained, and the winding of the second layer is performed by shifting the winding position toward the tip side. When the winding position is shifted to the end of the second coil receiving portion, the second layer winding is finished, and then the third layer winding is started in the same manner as the first layer.

  FIG. 9 is a diagram for explaining an eighth operation associated with the manufacture of the coil, and is a diagram for explaining an operation after the winding of the V-phase coil V1 is completed. When the winding of the desired number of turns of the V-phase coil V1 is completed, the rotation of the bobbin chuck 200 is stopped. At this time, the groove 311 of the core body 310 is located above. When the winding operation of the V-phase coil V1 is completed, the sub-bobbin 100V is returned to the sub-bobbin mounting portion 210 while being housed in the groove 311 without getting over the winding 110V over the V-phase coil V1 after the winding. For this reason, it goes without saying that the number of winding layers of the V-phase coil V1 is the same odd number as the number of winding layers of the U-phase coil U1.

  FIG. 10 shows a state where coils are formed in all nine coil receiving portions of the bobbin body 320 by repeating the winding winding operation as described above. Referring to FIG. 14, the arrangement is U1-V1-W1-U2-V2-W2-U3-V3-W3 in order from the front end side. Further, referring to FIG. 13, the first and third sets of W-phase coils W1 and W3, and the second set of U-phase coils U2 and V-phase coil V2 are opposite in winding direction. It will be wound in the direction.

  In the conventional method of manufacturing a three-phase coil for a linear motor, the winding direction of all the coils is the same. It was necessary to perform soldering after cutting at the end of the winding and changing the connection with the winding of the adjacent coil.

  On the other hand, according to the first embodiment, the coil that needs to be reversed in polarity is realized by reversing the winding direction of the winding, so the connection between the coils is changed in the middle. There is no need to do. That is to say, with regard to the U phase, the U phase coil U1, the U polarity coil U2 having the opposite polarity, and the U phase coil U3 are formed by one continuous winding without cutting or changing the connection in the middle. be able to.

  The sub bobbins 100U, 100V, and 100W are all returned to the sub bobbin mounting portion 210, and the winding end portions of the respective windings 110U, 110V, and 110W are led out from the grooves 311. As described above, there is no portion that is exposed to the soldering connection or outside the coil between the winding start portion and the winding end portion of the winding.

  Thereafter, the winding end portions of the windings 110U, 110V, and 110W are cut at a predetermined length, and the coil unit 300 is detached from the bobbin chuck 200 and used to form a stator as described in FIG. Is done. Of course, the adhesive tape or the like used for temporarily fixing the winding to the core body 310 in the groove 311 is removed. The winding start and winding end portions of the windings 110U, 110V, and 110W are used for connection for star or delta connection and connection to the control driver 40 described in FIG.

  In the first embodiment, the bobbin chuck 200 side is rotationally driven. However, the bobbin chuck 200 and the coil unit 300 are fixed, and the winding is wound at a location close to the coil receiving portion. The winding may be wound by turning (rotating) the held sub bobbin side about the coil unit 300.

(Effects of the first embodiment)
According to the method for manufacturing a coil according to the first embodiment, even if the coil is composed of a plurality of coils per phase and coils having different polarities are present in the coil, the coil is continuously wound by one winding. Since a plurality of coils can be formed in the form of winding, secondary connection such as soldering is not required, and the risk of ground fault and short circuit can be greatly reduced.

  As shown in FIG. 15A, since the wiring is moved inside the coil, the outer diameter of the coil becomes almost flat. Therefore, when configuring the linear motor, the distance between the coil and the permanent magnet can be reduced. As a result, an efficient magnetic circuit design is possible and the efficiency of the linear motor is improved.

  Since no physical connection (soldering or the like) is required between a plurality of coils per phase, it is also effective in reducing the size of the coil unit.

  In addition, when the core body 310 is hollow, it is suitable for reducing the overall weight or for use as a cooling medium passage when it is necessary to cool the heat generated by the coil. It may be rod-shaped.

  Moreover, although the number of coil receiving parts of the bobbin body 320 is made to correspond to the number of coils to wind, you may make it the following forms. When the number of coil receiving portions is 6 types of bobbin bodies A, 12 bobbin bodies B,..., N bobbin bodies N, for example, and the number of coils is 6 or less. If the bobbin body A has 7 to 12 bobbins, the use of the bobbin body B can provide versatility.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.

  FIG. 15 is a cross-sectional view of the main part of the linear motor, and FIG. 15A shows a cross-section of the main part of the linear motor using the coil manufactured according to the first embodiment. Since the wiring of the windings of the plurality of coils is performed through the groove 111 formed on the outer periphery of the core 11, there is no protrusion on the outer diameter side of the coil, and the outer periphery of the coil and the inner periphery of the annular permanent magnet It can be seen that the distance between the can be reduced. FIG. 15B shows a cross section of the main part of a linear motor using a permanent magnet 21 ′ having a U-shaped cross section instead of a ring as a permanent magnet. In this case, there is a space between the outer periphery of the coil 12 and the inner surface side of the permanent magnet 21 ′ that is not opposed via a gap. Therefore, the wiring crossing of the windings of the plurality of coils is performed using this space. May be. That is, in FIG. 15B, the windings of the plurality of coils are crossed on the outer peripheral side of the coil 12.

  The second embodiment is an example applied to the case of manufacturing the stator (three-phase coil) for the linear motor shown in FIG. 13 as in the first embodiment shown in FIG.

  FIG. 16 shows components suitable for manufacturing a three-phase coil for a linear motor composed of nine coils as described in FIG. Also in the second embodiment, in addition to the three sub bobbins 100U, 100V, 100W in which the windings are wound in advance separately, and the disc-shaped bobbin chuck 200 that can be rotated with these sub bobbins mounted, A coil unit 300 ′ is prepared as a constituent member. The three sub bobbins and the bobbin chuck 200 are constituent members necessary for the manufacturing operation, and the coil unit 300 ′ is a part of the three-phase coil.

  The three sub bobbins 100U, 100V, and 100W and the bobbin chuck 200 may be the same as those described in the first embodiment, and thus the description thereof is omitted.

  The coil unit 300 ′ includes a hollow core body 310 ′ made of a magnetic material and serving as the center core 11 described with reference to FIG. 12, and a bobbin body 320 ′ attached and fixed to the outer periphery of the core body 310 ′. The bobbin body 320 ′ is made of an insulative resin material, and a plurality of hook-shaped partitions 321 are equally spaced so that each of the nine coils can be formed by defining the coil length and partitioning it into an insulating state. Is provided. Also in the second embodiment, a portion between two adjacent partitions 321 in the bobbin body 320 'is referred to as a coil receiving portion.

  In 2nd Embodiment, since the groove | channel 311 formed in the outer periphery of the core body 310 in 1st Embodiment is unnecessary, the cut | interruption 322 formed in the bobbin body 320 in 1st Embodiment is also unnecessary. That is, the bobbin body 320 'may have a cylindrical cross section.

  FIG. 17 is a diagram for explaining a first operation associated with coil manufacture, and one end of the core body 310 ′ of the coil unit 300 ′ is set in the holding unit 220 of the bobbin chuck 200. Hereinafter, one end of the core body 310 ′ (coil unit 300 ′) on the holding unit 220 side may be referred to as a root side, and the opposite end of the core body 310 ′ may be referred to as a distal end side.

  FIG. 18 is a diagram for explaining a second operation associated with coil manufacture. Sub-bobbins 100U, 100V, and 100W are mounted on three adjacent sub-bobbin mounting portions 210 of the bobbin chuck 200, respectively. At this time, a part of the windings 110U, 110V, 110W wound around each of the sub bobbins 100U, 100V, 100W is pulled out as a winding start portion, and the respective leading ends are attached to the base side of the core body 310 ′ with an adhesive tape or the like. Temporarily fix.

  FIG. 19 is a view for explaining a third work associated with coil manufacture, and particularly a work for starting the formation of the U-phase coil U1 shown in FIG. In this operation, first, the sub bobbin 100U is removed from the sub bobbin mounting portion 210, and the winding 110U is substantially perpendicular to the central axis of the core body 310 ′ near the base side of the first coil receiving portion from the base side of the coil unit 300 ′. In this state, the sub bobbin 100U is held. In this state, the sub bobbin 100U is held by a holding mechanism (not shown). However, the sub bobbin 100U is not completely fixed, and is somewhat fixed in the central axis direction or a direction perpendicular thereto (direction approaching or moving away from the coil unit 300 ′). It is held in a movable state.

  FIG. 20 is a view for explaining a fourth work associated with coil manufacture, and is a view for explaining a winding winding work for U-phase coil U1 shown in FIG. In this operation, the bobbin chuck 200 is driven to rotate in the direction of the arrow shown (clockwise in FIG. 20). As a result, the coil unit 300 'rotates to start winding the winding 110U around the first coil receiving portion. At this time, since the winding 110V of the sub bobbin 100V and the winding 110W of the sub bobbin 100W are temporarily fixed to the base side of the core body 310 'with an adhesive tape or the like, they are not separated from the core body 310' by rotation.

  As the coil unit 300 ′ rotates, the winding position of the winding 110U shifts, and when the winding position shifts to the end of the coil receiving portion, the first layer winding ends. The rotation is maintained, and the winding of the second layer is performed by shifting the winding position toward the opposite end side (the end opposite to the tip). When the winding position is shifted to the opposite end of the coil receiving portion, the second layer winding is completed, and then the third layer winding is started in the same manner as the first layer described above.

  FIG. 21 is a diagram for explaining a fifth operation associated with coil manufacture, and is a diagram for explaining an operation after the winding winding operation of U-phase coil U1 is completed. When the winding winding operation of the U-phase coil U1 having a desired number of turns is completed, the rotation of the bobbin chuck 200 is stopped.

  After the formation of the U-phase coil U1, the winding 110U following the U-phase coil U1 may be located on either the tip end side or the opposite end side of both end portions in the axial direction of the coil receiving portion. This is due to the following reason.

  In the first embodiment, since the wiring winding of the coil winding is performed inside the coil, when the winding winding operation is completed, the sub bobbin is not passed over the U-phase coil U1 after the winding 110U is wound. It was necessary to return 100 U to the sub bobbin mounting part 210. On the other hand, in the second embodiment, since the wiring winding of the coil winding is performed along the outer periphery of the coil, the winding 110U following the U-phase coil U1 is arranged in the axial direction of the coil receiving portion. It may be located on either the tip end side or the opposite end side of both ends. Incidentally, when the number of winding layers is an odd number, the position of the winding 110U following the U-phase coil U1 is on the tip side, and when the number of winding layers is an even number, the position of the winding 110U following the U-phase coil U1 is opposite. It goes without saying that it becomes the end side.

  After the formation of the U-phase coil U1, the sub bobbin 100U is returned to the bobbin chuck 200. At this time, the winding 110U following the U-phase coil U1 is preferably temporarily fixed to the outer periphery of the U-phase coil U1 with an adhesive tape or the like.

  The above points are the same in the winding work of the V-phase coil and the W-phase coil.

  FIG. 22 is a diagram for explaining a sixth operation associated with coil manufacture. In particular, in order to reverse the polarity of the coil, the winding direction of the winding is changed to the winding operation of the U-phase coil U1. It is a figure for demonstrating the coil | winding winding operation | work performed in the direction opposite to time.

  Note that the winding direction of the windings in the first set of coils is opposite to that of the W-phase coil W1 in FIGS. 13 and 14, which is the third winding winding operation in order. However, in order to shorten the description, here again, it is the second time that the winding direction of the windings is reversed, and the description will proceed with the V-phase coil V1.

  In this operation, the sub bobbin 100V is removed from the sub bobbin mounting portion 210, and on the opposite side of the second coil receiving portion from the root side of the coil unit 300 ′, the sub bobbin 100V is opposite to the holding position of the sub bobbin 100U. The sub bobbin 100V is held in a state where the winding 110V is substantially perpendicular to the central axis of the core body 310 ′. The holding of the sub bobbin 100V in this state is also performed by a holding mechanism (not shown), and is held in a state where it can move to some extent in the direction of the central axis and the direction perpendicular thereto (direction approaching or moving away from the coil unit 300 ′). .

  Since the tip of the winding start portion of the winding 110V is temporarily fixed with an adhesive tape on the base side of the core body 310 ′, the winding 110V is connected to the second coil receiving portion from the root side of the coil unit 300 ′. The wiring crossing for leading to the opposite end side is performed in parallel with the central axis along the outer periphery of the U-phase coil U1. And it is preferable to temporarily fix winding 110V along the outer periphery of U-phase coil U1 with an adhesive tape or the like.

  FIG. 23 is a diagram for explaining a seventh operation accompanying the manufacture of the coil, and is a diagram for explaining a winding winding operation for the V-phase coil V1. In this operation, the bobbin chuck 200 is rotationally driven in the direction indicated by the arrow in FIG. 23 (counterclockwise direction in FIG. 23) opposite to the winding operation of the U-phase coil U1. As a result, the coil unit 300 ′ rotates in the opposite direction to the winding operation of the U-phase coil U <b> 1, whereby winding of the winding 110 </ b> V around the second coil receiving portion starts. Similarly to the winding operation of the U-phase coil U1, the windings 110U and 110W are attached to the core body 310 ′ with adhesive tape or the like so that the winding 110U of the sub bobbin 100U and the winding 110W of the sub bobbin 100W do not fall off due to rotation. It is desirable to temporarily fix to.

  As the coil unit 300 ′ rotates, the winding position of the winding 110V shifts to the tip side of the coil unit 300 ′, and when the winding position shifts to the tip of the second coil receiving portion, the first layer winding is performed. Although the rotation is completed, the rotation of the coil unit 300 ′ is maintained, and the winding of the second layer is performed by shifting the winding position toward the opposite end side. When the winding position is shifted to the opposite end of the second coil receiving portion, the second layer winding is completed, and then the third layer winding is started in the same manner as the first layer.

  FIG. 24 is a diagram for explaining an eighth operation associated with the manufacture of the coil, and is a diagram for explaining an operation after the winding winding operation of the V-phase coil V1 is completed. When the winding of the desired number of turns of the V-phase coil V1 is completed, the rotation of the bobbin chuck 200 is stopped. When the winding operation of the V-phase coil V1 is completed, the sub bobbin 100V is returned to the sub bobbin mounting portion 210. The winding 110V following the V-phase coil V1 is preferably temporarily fixed to the outer periphery of the V-phase coil V1 with an adhesive tape or the like.

  FIG. 25 shows a state where coils are formed in all nine coil receiving portions of the bobbin body 320 ′ by repeating the winding winding operation as described above. Referring to FIG. 14, the arrangement is U1-V1-W1-U2-V2-W2-U3-V3-W3 in order from the base side of the core body 310 '. Further, referring to FIG. 13, the first and third sets of W-phase coils W1 and W3, and the second set of U-phase coils U2 and V-phase coil V2 are opposite in winding direction. It will be wound in the direction.

  In FIG. 25, the U-phase, V-phase, and W-phase sub-bobbins are removed from the bobbin chuck 200, and the windings 110U, 110V, and 110W are cut at positions close to the root side of the core body 310 ′ and connected in series. One end side (opposite end side) of each of the U-phase coil, the three V-phase coils, and the three W-phase coils is led to the base side of the core body 310 ′. The winding start and winding end portions of the windings 110U, 110V, and 110W are used for connection for star or delta connection and connection to the control driver 40 described in FIG.

  In the second embodiment, the wiring of the respective windings for forming the V-phase coil and the W-phase coil is performed on the outer periphery of the U-phase coil U1, and the U-phase coils U2, W on the outer periphery of the V-phase coil V1. Wiring of the respective windings for forming the phase coil W1 is performed. That is, on the outer periphery of the coil of a certain phase, the wiring of the winding for forming the coil of the other two phases is performed. The wiring crossing around each coil is preferably linear in the direction of the central axis of the core body 310 '.

  In the conventional method of manufacturing a three-phase coil for a linear motor, the winding direction of all the coils is the same. It was necessary to perform soldering after cutting at the end of the winding and changing the connection with the winding of the adjacent coil.

  On the other hand, according to the second embodiment, the coil whose polarity needs to be reversed is realized by reversing the winding direction of the winding, so the connection between the coils is changed in the middle. There is no need to do. That is to say, with regard to the U phase, the U phase coil U1, the U polarity coil U2 having the opposite polarity, and the U phase coil U3 are formed by one continuous winding without cutting or changing the connection in the middle. be able to.

  In the second embodiment as well, the bobbin chuck 200 and the coil unit 300 ′ are fixed, and the sub-bobbin side held near the coil receiving portion for winding the winding is connected to the coil unit 300. The winding may be wound by turning (turning) around '.

  In the second embodiment, the core body 310 ′ and the bobbin body 320 ′ are temporarily fixed, and when the predetermined number of coils are formed by the above method, the bobbin body 320 ′ in which a plurality of coils are formed. Can be removed from the core body 310 '. Then, as shown in FIG. 26, the removed bobbin body 320 ′ with a coil is mounted on a rod-like core body 310 ″ having a relatively small curvature, and fixed again, thereby reciprocating the track having a certain curvature. In this case, the bobbin body 320 ′ is preferably made of a flexible insulating resin material, whereas the inner diameter side of the mover 20 described with reference to FIG. The inner diameter side of the annular or U-shaped permanent magnet 21 is also made to have the above curvature as a whole.

(Effect of 2nd Embodiment)
According to the method of manufacturing a coil according to the second embodiment described above, even if the coil is composed of a plurality of coils per phase and there are coils having different polarities, one winding Since a plurality of coils can be formed in the form of continuous winding with wires, secondary connection such as soldering is not required, and the risk of ground fault and short circuit can be greatly reduced.

  As shown in FIG. 15B, since the wiring is moved outside the coil, the inner diameter of the coil becomes substantially flat. Therefore, the distance between the yoke and the permanent magnet can be reduced by configuring the linear motor in combination with a yoke having a U-shaped cross section. As a result, an efficient magnetic circuit design is possible and the efficiency of the linear motor is improved.

  Since no physical connection (soldering or the like) is required between a plurality of coils per phase, it is also effective in reducing the size of the coil unit.

  The above description of the first and second embodiments is an embodiment applied to the three-phase coil for a linear motor shown in FIG. 13, but the present invention is applied to a multi-phase coil or solenoid having two or more phases. Applicable.

  The manufacturing method according to the present invention is effective for manufacturing a coil for a linear motor, a coil such as a solenoid, etc., in which one phase is composed of a plurality of coils and these coils are continuously or intermittently connected.

  In addition, the manufacturing method according to the present invention can be applied to a multi-phase coil having two or more phases, and the connection can also correspond to delta, star, and the like.

DESCRIPTION OF SYMBOLS 10 Stator 11 Center core 12 Coil 13 Pipe 20 Movable element 21 Permanent magnet 22 Magnet case 23 Guide block 24 Encoder head 30 Base 31 Bracket 32 Guide rail 35 Power cable 41 Computer 41
100U, 100V, 100W Sub bobbin 110U, 110V, 110W Winding 200 Bobbin chuck 210 Sub bobbin mounting part 220 Holding part 300, 300 'Coil unit 310, 310' Core body 311 Groove 320, 320 'Bobbin body 321 Partition 322 Break

Claims (13)

  1. A method for manufacturing a coil, including a step of forming a coil of two or more phases in which one phase includes a plurality of coils on an outer periphery of an axial core,
    On the outer periphery of the core, a groove extending in the axial direction is formed over a range longer than the formation region of the coil,
    Preparing a winding corresponding to each phase for each phase;
    Extending the winding start portion of the winding of each phase from the one end side of the core to the other end side of the core in a state accommodated in the groove;
    With the windings other than the winding of the phase to be wound first kept in the groove, the winding of the phase to be wound first is wound over a predetermined range to form the first coil. A first step of:
    A second step of accommodating, in the groove, a winding of a phase to be wound at the beginning following the first coil after completion of the first coil;
    While the windings other than the winding of the phase to be wound next are housed in the groove, the winding of the phase to be wound next is adjacent to the first coil, and the predetermined winding A third step of winding over a range to form the next coil;
    A fourth step of accommodating, in the groove, a winding of the next winding phase following the next coil after completion of the next coil formation;
    The manufacturing method of the coil characterized by including.
  2. The winding corresponding to each phase is prepared in a state wound around a bobbin for each phase,
    A holding member for holding the core at one end thereof, and a chuck member having a plurality of bobbin mounting portions for individually mounting the different bobbins,
    The holding part of the chuck member holds one end side of the core, and bobbins other than the phase to be wound are mounted on the bobbin mounting part, while the bobbin of the phase to be wound is mounted on the bobbin The winding of the phase to be wound in a state where the winding of the phase to be wound is held so as to be substantially perpendicular to the core at a predetermined location near the region where the winding is to be removed. The coil manufacturing method according to claim 1, wherein winding is performed.
  3.   The winding of the phase in which the winding is performed is performed by rotationally driving the chuck member holding the core around the central axis of the core. Coil manufacturing method.
  4.   The winding of the winding phase is performed by turning the bobbin of the winding phase around the central axis of the core at a location close to the region where the winding is to be performed. The manufacturing method of the coil of Claim 2 characterized by these.
  5.   A bobbin body made of an insulating material is attached to a part of the core that forms the coil, and the bobbin body corresponds to the number of coils to be formed by a plurality of partitions provided at equal intervals. 5. The coil receiving portion is formed, and a slit is formed in a region corresponding to the groove so as to expose the groove formed in the core. Coil manufacturing method.
  6.   The winding of the winding phase of the winding is performed after the coil formation on the coil receiving portion is completed, the winding of the winding phase following the coil is in the axial direction of the coil receiving portion. The coil manufacturing method according to claim 5, wherein the coil manufacturing method is performed so as to be positioned at an end portion closer to the chuck member among both end portions.
  7.   When at least one of the plurality of coils in the one phase has a polarity opposite to that of the coil formed in the first step, a bobbin wound with a winding for forming the at least one coil In a state where the winding for forming the at least one coil at a point symmetrical with respect to the predetermined location is held substantially perpendicular to the core, and the winding direction of the winding is The coil manufacturing method according to claim 6, wherein the winding for forming the at least one coil is performed in a direction opposite to a winding direction of the winding in the first step.
  8. A method of manufacturing a coil including a step of forming a coil of two or more phases including a first phase and a second phase, each of which is composed of a plurality of coils, on an outer periphery of a cylindrical bobbin body made of an insulating material. ,
    Preparing a winding corresponding to each phase for each phase;
    In a state where the winding start end of the first phase winding to be wound first is led out to one end side of the bobbin body, the first phase winding is a first region around the bobbin body. A first step of winding to form a first coil of a first phase;
    The winding start end of the second phase winding to be wound second is led out to one end side of the bobbin body, and the second phase winding is routed along the outer periphery of the first coil. In this state, the second phase winding is wound around the second region around the bobbin body adjacent to the first coil to form the first coil of the second phase. Including two steps,
    Thereafter, when the N-th coil (N is a positive integer) is formed by winding the winding of the first phase, the winding end of the (N-1) -th coil of the first phase The Nth coil is formed in a state where the connected winding of the first phase is wired along the outer periphery of the (N-1) th coil of the second phase. When the N-phase coil is formed by winding the winding of the second phase, the winding of the second phase connected to the winding end of the (N-1) -th coil of the second phase is A method of manufacturing a coil, comprising forming the N-th coil of the second phase in a state where the wiring is extended along the outer periphery of the N-th coil of the first phase.
  9. The cylindrical bobbin body is attached to the outer periphery of the shaft-shaped core body, while the windings corresponding to the phases are prepared in a state of being wound around the bobbin separately.
    A holding member that holds the core body at one end side that is the same as the one end side of the bobbin body, and a chuck member that includes a plurality of bobbin mounting portions for individually mounting the different bobbins,
    The holding portion of the chuck member holds one end side of the core body, and bobbins other than the phase to be wound are mounted on the bobbin mounting portion, while the bobbin of the phase to be wound is the bobbin The winding of the phase in which the winding is performed in a state where the winding of the phase in which the winding is performed is held so as to be substantially perpendicular to the core body at a predetermined location near the region where the winding is to be removed from the mounting portion The coil manufacturing method according to claim 8, wherein the wire is wound.
  10.   10. The winding of the phase in which the winding is performed is performed by rotationally driving the chuck member holding the core body around the central axis of the core body. The manufacturing method of the coil of description.
  11.   The winding of the winding phase is performed by turning the bobbin of the winding phase around the central axis of the core at a location close to the region where the winding is to be performed. The method for manufacturing a coil according to claim 9.
  12.   The coil manufacturing method according to claim 10 or 11, wherein the bobbin body has a coil receiving portion corresponding to the number of coils to be formed by a plurality of partitions provided at equal intervals. .
  13.   When at least one of a plurality of coils in a phase has a polarity opposite to that of the first coil, a bobbin wound with a winding for forming the at least one coil is attached to the predetermined portion. The winding for forming the at least one coil at a point-symmetrical position is held so as to be substantially perpendicular to the core body, and the winding direction of the winding is the winding of the first coil. The method of manufacturing a coil according to claim 9, wherein the winding for forming the at least one coil is performed in a direction opposite to a winding direction of the wire.
JP2010051703A 2010-03-09 2010-03-09 Coil manufacturing method Expired - Fee Related JP5479954B2 (en)

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