JP2006223090A - Method of winding cylindrical linear motor armature coil, and stator of cylindrical linear motor and cylindrical linear motor using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of winding a cylindrical linear motor armature coil, and a stator of a cylindrical linear motor and the cylindrical linear motor using it that make a bobbin for an annular coil unnecessary, that provide a space for processing the wiring and passing a crossover wire, and that make it easy to manufacture a yoke. <P>SOLUTION: The cylindrical linear motor is made up of a moving member 1 having a plurality of cylindrical magnets inside a cylindrical pipe that extends in the axial direction and the stator 2 that is concentrically arranged on the outside circumference of the moving member 1 via a magnetic gap in which the armature coil 6, which comprises a plurality of the annular coil groups, is provided in the axial direction on the inside circumference of a cylindrical yoke 7. This yoke 7 comprises an iron core of a thin plate blanked out roughly in a rectangular shape that is formed roughly in a cylindrical shape along the armature coil. A level difference 10 is provided at the joint portion formed when the iron core formed in roughly the cylindrical shape is wound. The winding process of the coil groups is performed utilizing the space 9 formed inside between the armature coil 6 and the level difference 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a winding method of a cylindrical linear motor armature coil, a cylindrical linear motor stator, and a cylindrical linear motor having a movable magnet structure including a cylindrical field and armature using the same.

Conventionally, a cylindrical linear motor having a cylindrical field and armature is as shown in FIG.
10A and 10B show the configuration of a cylindrical linear motor according to the first prior art, in which FIG. 10A is a schematic perspective view thereof, and FIG. 10B is a front sectional view taken along line BB in FIG.
In FIG. 10, 91 is a stator, 92 is a magnetic pole, 93 is a mover, 94 is a coil bobbin, 95 is a ring coil, and 96 is a cylindrical yoke. This cylindrical linear motor is of a movable coil type, and is a ring 91 wound around a stator 91 in which multipolar magnetic poles 92 are arranged in the axial direction, and a coil bobbin 94 arranged opposite to the stator 91 via a magnetic gap. The movable member 93 includes a coil 95 and a cylindrical yoke 96 that includes the ring-shaped coil 95. When a three-phase current corresponding to the position of the mover is passed through the ring-shaped coil 95 of the cylindrical linear motor, the mover 93 generates thrust and moves in the axial direction of the stator 91 (for example, , See Patent Document 1).

11A and 11B show the configuration of a cylindrical linear motor according to the second prior art, in which FIG. 11A is an overall perspective view and FIG. 11B is a front sectional view taken along line BB in FIG.
In FIG. 11, 101 is a stator, 102 is a mover, 103 is a permanent magnet, 104 is a field yoke, 105 is an armature winding, and 106 is an armature core. This cylindrical linear motor is different from the first prior art in that it forms a movable magnet type, and includes a cylindrical armature core 106, a cylindrical armature winding 105, and a field yoke 104. It is composed of a stator 101 and a mover 102 made of a field of a cylindrical permanent magnet 103.
FIG. 12 is a conceptual diagram showing an armature winding manufacturing process and manufacturing method according to the second prior art.
In FIG. 12, 107 represents the element coil of each phase. The stator 101 is a cylindrical armature winding that is wound around the armature core 106 in a spiral manner so that the element coils (107a, 107b, 107c) for each phase (U, V, W) have a pole pitch P. It consists of a line 105. In this case, after the element coils (107a, 107b, 107c) are combined to form the smooth armature coil 108, the armature winding is manufactured by spirally winding (see, for example, Patent Document 2). ).

FIG. 13 is a conceptual diagram showing a manufacturing process and a manufacturing method of an armature winding according to the third prior art.
As shown in FIG. 13, the armature coil is composed of six-phase bands (U, V, W, U ′, V ′, W ′), and after winding each coil in a cylindrical shape, each phase (U−U ′, There is also a connection between VV ′ and WW ′) (see, for example, Patent Document 3).
JP-A-8-275498 (Specification, page 4, FIGS. 1 to 2) Japanese Utility Model Publication No. 6-62787 (the second page of the specification, FIGS. 1 to 4) JP 2001-8430 A (page 20 of the specification, FIG. 11)

However, since the cylindrical linear motor of the first prior art uses the ring-shaped coil 95 wound around the coil bobbin 94 that includes the stator 91, the space factor of the winding is equivalent to the coil bobbin 94. There was a problem that decreased. In addition, since it is necessary to consider the space for connecting the ring-shaped coil 95 and passing the connecting wire of the multiphase coil, the outer diameter of the ring-shaped coil 95 is set to the cylindrical yoke 96 including the coil. It is necessary to make it smaller than the inner diameter. For this reason, there has been a problem that the space factor of the ring-shaped coil 95 decreases and the loss increases.
In addition, since the cylindrical yoke is manufactured by machining from a column or casting, a dedicated jig is required every time the outer diameter is different, and a lot of time must be spent.

  The present invention has been made to solve the above problems, and a first object of the invention is to eliminate the bobbin of the ring-shaped coil, to secure a space for connection processing and a crossover, and to include a yoke including the coil. It is an object of the present invention to provide a cylindrical linear motor armature coil winding method, a cylindrical linear motor stator, and a cylindrical linear motor using the same.

Then, in the cylindrical linear motor according to the second prior art, when the element coils are combined and manufactured as a smooth armature coil by spirally winding, it is not necessary to perform a wiring process between the phases, so that the winding is occupied. The product rate can be increased. However, in this case, there is a problem that it is difficult to manufacture a smooth armature coil, and the loss increases because the winding coefficient is small.
In addition, in the cylindrical linear motor of the third prior art, when a ring-shaped coil is manufactured and wire connection processing is performed between each phase (UU ′, VV ′, WW ′), In order to secure a space for performing the wiring process between the phases, there is a problem that the space factor of the winding is lowered and the loss is increased.

Although it is possible to wind in a state where a plurality of coils are connected in order to eliminate the wiring process, for example, a connection coil of 6-phase band (UW'-VU'-WV ') is produced. In this case, the winding direction is reversed for each coil, or a single-phase element coil (U-U ', V-V', WW ') is produced, and then a connection process is performed to produce a three-phase After the band connecting coil (UWWVUWW) is fabricated, the direction of the coil corresponding to the reverse phase (U ′, V ′, W ′) is reversed to obtain the 6 phase band (UW ′). −V−U′−W−V ′) is required to be manufactured.
Then, when the winding direction is reversed for each coil, there is a problem that when the winding direction is reversed, the entire coil rotates on the jig, the coil is unwound, and the connecting wire becomes long. In addition, when reversing the direction of the coil corresponding to the reverse phase after making the three-phase band (U-W-V-U-W-V) connected coil, the coil may be disconnected or incorrect when the coil is reversed. There is also a problem that the direction of the coil is reversed.

  The present invention has been made to solve the above-mentioned problems, and a second object of the present invention is to make it possible to easily produce a connection coil in which the winding directions of adjacent coils are different, and to reduce the space required for the jumper wire. It is to provide a winding method of a cylindrical linear motor armature coil that can increase the space factor of the armature, a cylindrical linear motor stator, and a cylindrical linear motor using the same. .

  In order to solve the above problems, the present invention is configured as follows.

  The invention of claim 1 is a method of winding an armature coil of a cylindrical linear motor, wherein a copper wire constituting a coil group of each phase of the armature coil is wound in a columnar shape extending in the axial direction. After being attached to the tool, the winding jig is rotated in a predetermined direction, and then the winding jig is moved in the axial direction, whereby the coil group of each phase of the previous stage attached to the winding jig A ring-shaped coil is continuously manufactured by a similar process for copper wires constituting a coil group of each phase of the next stage so as to be adjacent to each other.

  The invention of claim 2 is a winding method of an armature coil of a cylindrical linear motor, wherein copper wires constituting a coil group of each phase of the armature coil are folded in advance in a substantially U shape. After placing and attaching the folded portion of the copper wire to a cylindrical winding jig extending in the axial direction, the winding jig is rotated only in a single direction, and then attached to the winding jig Further, a ring-shaped coil is continuously manufactured by a similar process using copper wires constituting each phase coil group of the next stage so as to be adjacent to the coil group of each phase of the previous stage.

  According to a third aspect of the present invention, in the winding method of the cylindrical linear motor armature coil according to the second aspect, the folded portion of the copper wire is arranged so that the folded portion of the copper wire becomes a connecting wire of the coil group. It is characterized in that it is hooked on a crossover holding part for holding a crossover attached to the winding jig.

  According to a fourth aspect of the present invention, in the winding method of the cylindrical linear motor armature coil according to the third aspect, after the copper wire is wound around the winding jig to produce a coil group of each phase, the coil group The crossover holding portion to which the crossover wire is attached is housed on the inner diameter side of the winding jig.

  The invention according to claim 5 is an invention relating to a cylindrical linear motor stator, wherein a cylindrical yoke and a plurality of coil groups are arranged at equal pitches in the axial direction on the inner periphery of the yoke. And an armature coil manufactured by the winding method according to claim 1.

  According to a sixth aspect of the present invention, in the cylindrical linear motor stator according to the fifth aspect, the yoke is formed in a substantially cylindrical shape so that a thin plate-shaped iron core punched out into a substantially rectangular shape follows the outer periphery of the armature coil. It is characterized in that a step is provided in a joint portion formed when the thin plate-shaped iron core formed in the substantially cylindrical shape is wound.

  According to a seventh aspect of the present invention, in the cylindrical linear motor stator according to the sixth aspect, when the yoke of the stator is formed, a space formed on the inner surface between the armature coil and the step of the yoke is used. And the connection process of the multiphase coil group which comprises the said armature coil is performed, It is characterized by the above-mentioned.

  According to an eighth aspect of the present invention, in the cylindrical linear motor stator according to the sixth or seventh aspect, when the yoke of the stator is formed, positioning is performed using a step formed at the joint portion of the yoke. It is characterized by that.

  The invention of claim 9 relates to a cylindrical linear motor, wherein the stator according to claim 5 is disposed opposite to the inner periphery of the stator via a magnetic gap and is axial. And a mover having a plurality of columnar magnets magnetized by multiple poles inserted inside the pipe.

  A tenth aspect of the present invention is the cylindrical linear motor according to the ninth aspect, wherein the sum of the axial lengths of the plurality of columnar magnets inserted in the pipe is the armature coil according to the fifth aspect. It is equal to the sum of the axial length and the drive stroke of the mover, and the sum of the axial length of the armature coil and the drive stroke of the mover is equal to or less than the axial length of the yoke. Yes.

  An eleventh aspect of the present invention is the cylindrical linear motor according to the ninth or tenth aspect, wherein among the plurality of columnar magnets inserted in the pipe, the axial lengths of the magnets located at both ends of the pipe are provided. This is characterized in that it is shorter than the axial length of other magnets.

  A twelfth aspect of the present invention is the cylindrical linear motor according to the ninth or tenth aspect, wherein the cylindrical magnetic body is shorter than the axial length of the magnet between the plurality of columnar magnets inserted in the pipe. It is characterized by providing.

  Further, according to the invention described in claim 1, the polyphase continuous ring-shaped coil can be easily manufactured by fixing the multiphase copper wire and sliding the winding jig after the rotation. This makes it possible to omit the wire coil connection process.

  According to the second aspect of the present invention, it is possible to easily produce a connecting coil that is wound in the opposite direction in the adjacent coils of a cylindrical linear motor having a particularly long stroke. Then, since half of the connecting wires are arranged on the inner diameter side of the coil, the connecting wire between the coils can be shortened because the coil is not slid on the winding jig during connection coil production. .

  According to the third aspect of the present invention, an air-core ring-shaped connecting coil can be created.

  Further, according to the invention described in claim 4, since the space of the rising line of the copper wire necessary for the coil winding start portion can be omitted, by using a continuous coil that eliminates the space of the rising line, a cylindrical shape is obtained. The space factor of the armature coil of the linear motor can be increased, and as a result, the loss can be reduced.

  According to the invention described in claim 5, the armature winding manufactured by the winding method according to claim 1 or 2 is combined with the cylindrical yoke, so that a compact and space-saving cylindrical linear motor is obtained. A stator can be obtained.

  According to the sixth aspect of the present invention, the stator yoke of the cylindrical linear motor can be easily manufactured from a thin plate core.

  Further, according to the seventh aspect of the present invention, the ring-shaped coil can be connected with the same diameter without making the inner diameter of the ring-shaped coil smaller than the inner diameter of the stator yoke. For this reason, the space factor of a coil | winding can be improved with respect to the conventional cylindrical linear motor, and a loss can be reduced.

  Further, according to the invention described in claim 8, when a plurality of cylindrical linear motors according to any one of claims 1 to 4 are used side by side, a special jig necessary for positioning the individual motors is used. Positioning can be easily performed without newly adding.

  According to a ninth aspect of the present invention, the linear motor stator having a small loss according to the fifth to eighth aspects is arranged opposite to the linear motor movable element constituting the field, so that a cylindrical linear motor that does not generate heat is provided. Can be obtained.

  In addition, according to the invention described in claims 10 and 11, a constant thrust can be obtained at any location of the stroke considered by the cylindrical linear motor.

  According to the invention of claim 12, even when magnets having strong anisotropy are arranged with their magnetization directions opposed to each other, by arranging a columnar magnetic body shorter than the magnet between the magnets, The magnetic flux can flow in the direction perpendicular to the axial direction in the magnetic body portion between the magnets without canceling each other.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side sectional view of a cylindrical linear motor showing a first embodiment of the present invention, and FIG. 2 is a front sectional view taken along line AA of FIG.
1 and 2, 1 is a movable element, 2 is a stator, 3 is a pipe, 4 is a cylindrical magnet, 4a and 4b are cylindrical magnets provided at both ends of the pipe 3, 5 is a cylindrical magnetic body, 6 Is an armature coil, 7 is a yoke, 9 is a space, and 10 is a step.

The features of the present invention are as follows.
That is, the cylindrical linear motor includes a cylindrical pipe 3 that extends in the axial direction, a plurality of columnar magnets 4 that are magnetized in multiple poles inserted inside the pipe 3, and the cylindrical magnet 4. A mover 1 having a columnar magnetic body 5 inserted between them, a cylindrical yoke 7 arranged concentrically on the outer periphery of the mover 1 via a magnetic gap, and a ring shape on the inner periphery of the yoke 7 And a stator 2 having an armature coil 6 in which a plurality of coil groups wound around are arranged at an equal pitch in the axial direction.
Here, the sum of the axial lengths of the plurality of columnar magnets 4 inserted in the pipe 3 is equal to the sum of the axial length L _{C of} the armature coil 6 and the driving stroke S of the mover 1, In addition, the sum of the axial length L _{C of} the armature coil 6 and the drive stroke S of the mover 1 is set to be equal to or less than the axial length of the yoke 7.

  Specifically, the columnar magnet 4 inserted in the pipe 3 of the mover 1 is magnetized in the axial direction, and the magnetization direction is different by 180 ° between the adjacent magnets. In addition, among the plurality of columnar magnets 4 inserted in the pipe 3, the axial lengths of the magnets 8a and 8b located at both ends in the pipe 3 are shorter than the axial lengths of the other magnets, The axial length of the columnar magnetic body 5 entering between the plurality of columnar magnets is shorter than the axial length of the magnets on both sides sandwiching the magnetic body.

The yoke 7 used for the stator is formed in a substantially cylindrical shape along the outer periphery of the armature coil 6 with reference to one long side of the thin plate-shaped iron core punched into a substantially rectangular shape. A step 10 is provided at a joint portion between one long side and the other long side of the iron core, which is formed when a thin plate-shaped iron core formed in a substantially cylindrical shape is wound.
Further, when forming the yoke 7 of the stator, the space 9 formed on the inner surface of the armature coil 6 and the step 10 of the yoke 7 is used to perform the connection processing of the coil group constituting the armature coil. It has become.

FIG. 3 is a schematic diagram showing the connection of ring coils when a three-phase power source is used for the cylindrical linear motor in this embodiment.
In FIG. 3, 11 is a ring-shaped coil of each phase constituting the armature coil 6 of FIG. 2, and 12 is a crossover portion for performing a connection process. This crossover portion 12 is accommodated in a space 9 formed on the inner surface between the armature coil 6 and the step 10 of the yoke 7 shown in FIG.

FIG. 4 is a schematic diagram for explaining a winding method of the three-phase coil of the cylindrical linear motor in this embodiment.
4, reference numeral 13 denotes a winding jig, 14 denotes a winding direction, and 15 denotes a moving direction. A method of winding a three-phase coil at the same time will be described with reference to FIGS.
First, in (a), after attaching the copper wire constituting the coil group (U phase, V phase, W phase) of each phase of the armature coil to the cylindrical winding jig 13 extending in the axial direction, The winding jig 13 is rotated in a predetermined winding direction 14, and then the winding jig 13 is moved in the axial direction in (b). Subsequently, in (c), the winding in the step (a). The copper wire constituting the coil group of each phase of the next stage is wound around the jig again in the winding direction 14 so as to be adjacent to the coil group of each phase of the previous stage attached to the jig 13. As a result, two ring coils for three phases are produced in a continuous state. Thus, the steps (a) to (c) are repeated as shown in (d), and even when the stroke becomes long, a three-phase continuous ring-shaped coil is easily manufactured as shown in (e). It becomes possible to do.

  Since the first embodiment of the present invention is configured as described above, the stator yoke of the cylindrical linear motor can be easily manufactured from the thin plate-shaped iron core, and the yoke can be formed when the thin plate-shaped iron core is formed into a cylindrical shape. By using the space between the step at the joint and the armature coil, it is possible to easily perform connection processing and crossover processing of the coil group. This also makes it possible to easily produce a multi-phase continuous ring coil.

Next, a second embodiment of the present invention will be described.
FIG. 5 shows a case where a plurality of cylindrical linear motors according to the second embodiment of the present invention are arranged side by side, wherein (a) is a front sectional view thereof, and (b) is an enlarged view of a broken line portion of (a). is there. In the figure, 16 denotes a cross section of a plurality of cylindrical linear motors, 17 denotes a positioning portion, and LM denotes a cylindrical linear motor.
That is, for example, when a plurality of cylindrical linear motors LM are used side by side on an H-shaped jig as shown in the drawing, positioning is performed using a positioning unit 17 having a stepped portion in the cross section 16 of the cylindrical linear motor. Is done.
Since the second embodiment has the above-described configuration, a space for passing the connecting wire and the connecting wire of the ring-shaped coil constituting the armature coil can be secured at the manufacturing stage of the yoke, and a plurality of linear motors are used side by side. Each linear motor can be easily positioned.

Next, a third embodiment of the present invention will be described.
FIG. 6 is a view for explaining a winding method of a two-phase band (U-U ') coil of a cylindrical linear motor according to a third embodiment of the present invention. FIG. A state in which the wire is folded in advance on the jig, (b) is a state in which the copper wire is wound around the winding jig as a ring-shaped connection coil, and (c) is a state in which the copper wire is wound on the winding jig as a ring-shaped connection coil FIG. 10D is a front sectional view taken along line aa in FIG. In addition, (d) figure abbreviate | omits the cross section of the winding-up jig and illustrated.
In FIG. 6, 20 is a winding jig for a ring-shaped connecting coil, 21 is a copper wire for producing a ring-shaped coil, 22 is a portion to be wound on the left side of the copper wire 21 for producing a ring-shaped coil, and 23 is for producing a ring-shaped coil. The right winding target portion of the copper wire 21, 24 is a connecting wire connecting the ring-shaped coil 25 and the ring-shaped coil 26, 25 is a ring-shaped coil produced by the copper wire winding target portion 22, and 26 is a copper wire winding. A ring-shaped coil 27, which is manufactured by the target portion 23, is a two-phase band (UU ′) ring-shaped connecting coil composed of a crossover 24 and ring-shaped coils 25, 26.

7 is a schematic view showing the winding jig of FIG. 6, wherein (a) is a side view, (b) is a front sectional view, and FIG. 8 is a winding of a copper wire for producing a two-phase band connection coil. It is a conceptual diagram which shows the state arrange | positioned in the crossover holding part of a taking jig.
In FIG. 7, 28 is a connecting wire holding part, 29 is an expansion / contraction mechanism for expanding and contracting the connecting wire holding part in the radial direction, and 30 is an arrangement of a copper wire for producing a two-phase band (U-U ') ring-shaped connecting coil. .

First, in FIG. 6A, the copper wire 21 constituting the coil group of the two-phase band (U-U ') of the armature coil is previously folded and arranged in a substantially U shape, and the folded portion of the copper wire is arranged. Becomes a connecting wire of the coil group, and the connecting wire 24 is attached to a cylindrical winding jig extending in the axial direction. 6B and 6C, the winding jig 20 is rotated only in a single direction (the arrow direction in the drawing), and the copper wire 21 is wound around the winding jig 20. Subsequently, the copper coil 21 constituting each phase coil group of the next stage is continuously manufactured by the same process so as to be adjacent to the coil group of each phase of the previous stage attached to the winding jig 20. In addition, two-phase band (UU ′) ring-shaped connecting coils in which the winding directions of the adjacent coil groups 22 and 23 are different can be manufactured. Here, as shown in FIG. 6 (d), the crossover wires 24 are arranged on the inner diameter side of the coil group 25.
Specifically, the folded portion of the copper wire that becomes the connecting wire 24 described above is hooked on the connecting wire holding portion 28 for holding the connecting wire attached to the winding jig 20 as shown in FIG. In the state of the arrangement 30 of the copper wire attached to the crossover holding part 28 shown in FIG. 8, it is rotated in the arrow direction in the figure. Then, after the copper wires 22 and 23 are wound around the winding jig 20 to complete the production of the coil groups 25 and 26 of the respective phases, the crossover holding unit 28 to which the crossover wires 24 of the coil groups are attached is wound up. The retractable mechanism 29 provided inside the tool 20 is housed toward the radially inner side of the winding jig 20, and the winding jig 21 is pulled out from the connecting coil.
In FIG. 6C, only 10 turns per stage in the axial direction is provided, but the number of turns per stage can be freely adjusted by adjusting the length of the connecting wire 24. Of course, if the number of coils is increased, the number of turns per coil can be freely changed.
Therefore, in the third embodiment of the present invention, after the copper wire is folded in advance and placed on the winding jig, the ring-shaped connecting coil is produced simply by rotating the winding jig only in a single direction. Since it did in this way, it becomes possible to produce easily the connection coil wound in the reverse direction especially in the coil which adjoins a cylindrical linear motor with a long stroke.
In addition, since the connecting wire is arranged on the inner diameter side of the coil group, the coil does not slide on the winding jig regardless of whether or not the connection coil is being created. The crossover can be shortened. Moreover, since the space of the coil rising line can be omitted, the space factor of the coil can be increased.
Furthermore, when such an armature coil is applied to a cylindrical linear motor, there is no connection process between the coils, and a continuous coil that eliminates the space of the rising line of the copper wire necessary for the winding start portion of each coil can be used. The space factor of the armature coil of the cylindrical linear motor can be increased, and as a result, the loss can be reduced.

Next, a fourth embodiment of the present invention will be described.
FIG. 9 is a diagram for explaining a winding method of a six-phase band (UW′-VU′-WV ′) coil of a cylindrical linear motor according to a fourth embodiment of the present invention. (A) is arrangement | positioning of the copper wire at the time of producing a ring-shaped connection coil, (b) is the state wound 5 times as a ring-shaped connection coil, (c) is the state wound 10 times as a ring-shaped connection coil (D) is a front sectional view along the aa line in (c), and (e) is a front sectional view along the bb line in (c).
In FIG. 9, 31 is a copper wire for producing a U-phase coil among the ring-shaped connecting coils of the 6-phase band, 32 is a left winding target portion of the copper wire 31 for producing the ring-shaped coil, and 33 is copper for producing the ring-shaped coil. The right winding target portion of the wire 31, 34 is a connecting wire connecting the ring coil 35 and the ring coil 36, 35 is a ring coil produced by the copper wire winding target portion 32, and 36 is a copper wire winding target. A ring-shaped coil produced by the section 33, 41 is a copper wire for producing a V-phase coil among the ring-shaped connected coils of the 6-phase band, 42 is a portion to be wound on the left side of the copper wire 41 for producing the ring-shaped coil, 43 is A left winding target portion of the ring-shaped coil manufacturing copper wire 41, 44 is a connecting wire connecting the ring-shaped coil 45 and the ring-shaped coil 46, 45 is a ring-shaped coil manufactured by the copper wire winding target portion 42, 6 is a ring-shaped coil which is formed by a copper wire winding subject unit 43, 51 is a copper wire W phase coil fabricated out of 6 phase belts ring-shaped coupling coil.
The fourth embodiment is different from the third embodiment in that a connection coil of a six-phase band (UW'-VU'-WV ') is produced. That is, in the case of creating a 6-phase band connection coil, the two-phase band (U-U ') connection coil shown in the third embodiment is used as an element coil and arranged in three pieces (U -U ', VV', WW ').
First, in FIG. 9 (a), U, V, and W phase-coil-preparing copper wires 31, 41, 51 are previously folded and arranged in a substantially U shape, and the U-phase and V-phase copper wires are turned back. 9A and 9B are attached to the take-up jig 20 after connecting the crossover wires 34 and 44 of the coil group as well as the crossover wire (not shown by the arrow), which is the folded portion of the W-phase copper wire. ), The winding target portions 32 and 33 for the U phase, the winding target portions 42 and 43 for the V phase, and similarly the W phase winding target portion (not shown) are rotated in a single direction. Thus, the U-phase ring-shaped coils 35 and 36, the V-phase ring-shaped coils 45 and 46, and the W-phase ring-shaped coils (not shown) are produced. Note that the W phase is different in that the arrangement of the folded portion of the copper wire is opposite to the U phase and the V phase in the vertical direction, but the rest is the same.
Therefore, in the fourth embodiment of the present invention, when a connecting coil of 6-phase band (UW'-VU'-W-V ') is manufactured according to the prior art, the 2-phase band ( U-U ', V-V', and WW ') are produced, and a 6-phase band coupling coil is produced by combining the necessary number, as shown in FIG. A copper coil for producing a two-phase band (U-U ') connection coil is arranged side by side, and a six-phase band connection coil is easily produced simply by rotating the winding jig in a single direction. Can do.
Of course, not only the 6-phase band but also the N-phase band coupling coil can be easily manufactured by the same method. The winding procedure is the same as in the third embodiment.

  Since the cylindrical linear motor of the present invention can be easily positioned by utilizing the step formed on the outer surface of the cylindrical yoke of the stator, for example, a plurality of cylindrical linear motors are arranged side by side, a chip mounter head, etc. Can be applied to.

Side sectional view of a cylindrical linear motor showing a first embodiment of the present invention. Front sectional view along line AA in FIG. Schematic showing the connection of ring coils when a three-phase power source is used for the cylindrical linear motor in this embodiment Schematic for demonstrating the winding method of the three-phase coil of the cylindrical linear motor in a present Example It is a case where a plurality of cylindrical linear motors showing a second embodiment of the present invention are arranged side by side, wherein (a) is a front sectional view thereof, and (b) is an enlarged view of a broken line portion of (a). It is a figure for demonstrating the winding method of the two phase band (UU ') coil of the cylindrical linear motor which shows 3rd Example of this invention, Comprising: (a) is a copper wire to a winding jig | tool. A state where it is folded in advance, (b) is a state in which a copper wire is wound around a winding jig as a ring-shaped connecting coil, and (c) is a copper wire being wound around a winding jig as a ring-shaped connecting coil, 10 times. (D) is a front sectional view taken along line aa in (c). Cross section of winding jig The figure which shows the state which has arrange | positioned the copper wire for producing a two phase band (U-U ') coil on a winding jig | tool. It is a figure for demonstrating the winding method of the 6 phase belt | band | zone (UW'-VU'-WV ') coil of the cylindrical linear motor which shows 4th Example of this invention, (a ) Is an arrangement of copper wires when producing a ring-shaped connecting coil, (b) is a state where the ring-shaped connecting coil is wound five times, (c) is a state where the ring-shaped connecting coil is wound ten times, (d ) Is a front sectional view taken along line AA in (c), and (e) is a front sectional view taken along line BB in (c). The structure of the conventional cylindrical linear motor is shown, Comprising: (a) is the schematic perspective view, (b) is front sectional drawing which follows the bb line of (a). A perspective view and a front sectional view of a conventional cylindrical linear motor Diagram showing element coil and armature winding of conventional cylindrical linear motor Sectional view of a cylindrical linear motor using a conventional 6-phase band (U-W'-V-U'-W-V ') coil

Explanation of symbols

1 mover,
2 Stator,
3 pipes,
4 cylindrical magnets,
5 cylindrical magnetic material,
6 Armature coil,
7 Cylindrical yoke,
8a, 8b cylindrical magnets,
9 space,
10 joints (steps),
11 Ring coil,
12 Ring-shaped coil group connection processing and crossover section,
13 Winding jig,
14 Winding direction of the ring coil,
15 Movement direction after winding the ring-shaped coil,
16 Cross section of multiple cylindrical linear motors,
17 Positioning part,
20 Ring winding coil winding jig,
21 Copper wire for ring coil production,
22 The left winding target portion of the ring-shaped coil manufacturing copper wire,
23 The right winding target part of the copper wire for ring coil production,
24 Crossover connecting the ring coil 25 and the ring coil 26;
25 Ring-shaped coil produced by the copper wire winding target part 22,
26 Ring-shaped coil produced by the copper wire winding target part 23,
27 A two-phase band (UU ′) ring-shaped connecting coil composed of a jumper wire 24 and ring-shaped coils 25, 26;
28 Crossover holding part,
29 Extension mechanism of the crossover holding part,
30 Arrangement of a copper wire for producing a ring-shaped connecting coil of two-phase band (U-U '),
31 Copper wire for making a U-phase coil constituting a ring-shaped connecting coil of 6-phase band (UW'-VU'-WV '),
32 The left winding target portion of the ring-shaped coil manufacturing copper wire 31;
33 The right winding target portion of the ring-shaped coil manufacturing copper wire 31;
34 Crossover connecting the ring coil 35 and the ring coil 36;
35 Ring-shaped coil produced by the copper wire winding target part 32,
36 Ring-shaped coil produced by the copper wire winding object part 33,
41 Copper wire for producing a V-phase coil constituting a ring-shaped connecting coil of 6-phase band (UW'-VU'-WV '),
42 The left winding target portion of the ring-shaped coil manufacturing copper wire 41,
43 The portion to be wound on the left side of the ring-shaped coil manufacturing copper wire 41,
44 Crossover connecting the ring coil 45 and the ring coil 46;
45 Ring-shaped coil produced by the copper wire winding target part 42,
46 Ring-shaped coil produced by the copper wire winding target part 43,
51 Copper wire for producing a W-phase coil constituting a ring-shaped connecting coil of 6-phase band (UW'-VU'-WV '),
LM cylindrical linear motor

Claims (12)

A winding method of an armature coil of a cylindrical linear motor,
After attaching the copper wire constituting the coil group of each phase of the armature coil to a cylindrical winding jig extending in the axial direction, the winding jig is rotated in a predetermined direction, and then the winding is performed. By moving the take-up jig in the axial direction, the copper wire constituting the coil group of each phase of the next stage so as to be adjacent to the coil group of each phase of the previous stage attached to the take-up jig is the same process A winding method for a cylindrical linear motor armature coil, characterized in that a ring-shaped coil is continuously manufactured by the above method. A winding method of an armature coil of a cylindrical linear motor,
After the copper wire constituting the coil group of each phase of the armature coil is previously folded and arranged in a substantially U shape, and the folded portion of the copper wire is attached to a cylindrical winding jig extending in the axial direction The copper that constitutes each phase coil group of the next stage so that the winding jig is rotated only in a single direction and then adjacent to the coil group of each phase of the previous stage attached to the winding jig. A winding method for a cylindrical linear motor armature coil, characterized in that a ring-shaped coil is continuously manufactured by a similar process.   The folded portion of the copper wire is hooked to the connecting wire holding portion for holding the connecting wire attached to the winding jig so that the folded portion of the copper wire becomes a connecting wire of the coil group. A winding method for a cylindrical linear motor armature coil according to claim 2.   After winding the copper wire around the winding jig to produce a coil group of each phase, the connecting wire holding part on which the connecting wire of the coil group was mounted was housed on the inner diameter side of the winding jig. The winding method of the cylindrical linear motor armature coil according to claim 3.   A cylindrical yoke, and an armature coil manufactured by the winding method according to claim 1, wherein a plurality of coil groups are arranged on the inner periphery of the yoke at an equal pitch in the axial direction. A cylindrical linear motor stator characterized by that.   The yoke is obtained by forming a thin plate-shaped iron core punched into a substantially rectangular shape into a substantially cylindrical shape along the outer periphery of the armature coil, and when the thin plate-shaped iron core formed in the substantially cylindrical shape is wound. The cylindrical linear motor stator according to claim 5, wherein a step is provided in the joint portion that can be formed.   When forming the yoke of the stator, the connection process of the multi-phase coil group constituting the armature coil is performed using the space formed on the inner surface between the armature coil and the step of the yoke. The cylindrical linear motor stator according to claim 6.   8. The cylindrical linear motor stator according to claim 6, wherein when the yoke of the stator is formed, positioning is performed using a step formed at a joint portion of the yoke. 9. A stator according to claim 5;
A cylindrical pipe that is disposed opposite to the inner periphery of the stator via a magnetic gap and extends in the axial direction, and a plurality of columnar magnets that are magnetized in a multipole inserted inside the pipe. A mover having
A cylindrical linear motor characterized by comprising:   The sum of the axial lengths of the plurality of columnar magnets inserted in the pipe is equal to the sum of the axial length of the armature coil and the drive stroke of the mover according to claim 5, and the electric machine The cylindrical linear motor according to claim 9, wherein the sum of the axial length of the child coil and the driving stroke of the mover is equal to or less than the axial length of the yoke.   The axial length of magnets located at both ends in the pipe among the plurality of columnar magnets inserted in the pipe is shorter than the axial length of other magnets. The cylindrical linear motor according to 10.   The cylindrical linear motor according to claim 9 or 10, wherein a columnar magnetic body shorter than the axial length of the magnet is provided between the plurality of columnar magnets inserted in the pipe.

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