JP2009017711A - Spiral motor and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate forming of the spiral form provided to a spiral motor. <P>SOLUTION: The spiral form can be easily realized, by dividing a spiral form of the spiral motor and constituting it out of a plurality of blocks. In this motor which has a mover provided with a center line and a spiral part provided at an outer circumference of the center line, and a stator having a hollow electrode in a spiral form at a constant interval, in which the center line of the mover is located inside the hollow electrode of the stator, and the spiral part of the mover is made rotatable in the spiral form inside a spiral groove in the hollow electrode of the stator, and which linearly moves in an axial direction, while rotating the mover in the spiral form to the stator, the plurality of mover blocks and stator blocks are laid in a spiral form along the center line to constitute the mover and the stator, and the spiral part of the mover is introduced into the spiral groove of the hollow electrode of the stator, while rotating in the spiral form, and being assembled into a stator, together with the mover. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a spiral motor in which a rotor moves linearly in an axial direction while rotating with respect to a stator, and a manufacturing method thereof.

  When performing precise positioning while receiving external force, such as NC machines, large thrust and high rigidity are required. In order to obtain this large thrust, a method of decelerating the output of the motor with a gear and a direct drive method using a large magnetic field are known.

  When a large thrust is obtained by decelerating the motor output with the gear, there is a problem that the coulomb friction force greatly affects the positioning accuracy due to the gear, and when a large thrust is obtained with the direct drive system, There is a problem that becomes large.

  In particular, in the case of direct acting actuators, a configuration using a rotary motor and a ball screw is known as a method using a gear. However, a configuration combining a rotary motor and a ball screw is a problem of positioning accuracy. In addition, there is a problem that the apparatus becomes complicated. As a direct-acting actuator using a direct drive system, a configuration using a linear motor is known.

  Further, as a motor that generates a straight driving force, a N-pole and a S-pole are alternately magnetized at equal intervals in a cylindrical shape on a cylindrical surface to form a rotor, and the periphery is surrounded on a plane perpendicular to the axial direction. Thus, there has been proposed a spiral motor in which electromagnetic coils are arranged and used as a stator. For example, Patent Document 1 has been proposed as such a spiral motor.

  In the motor configuration described above, there is a problem that the device becomes complicated in order to obtain a large thrust. In addition, the spiral motor proposed in the above document has a problem that it is difficult to obtain a large thrust because the thrust depends on the facing area between the electromagnetic coil and the outer peripheral surface of the rotor.

  Therefore, in the conventional configuration known as a motor that generates a straight driving force, there is a problem in that it is impossible to simultaneously provide each point of small size, light weight, high accuracy, and high thrust.

  Accordingly, the inventors of the present application have proposed a spiral motor that solves the above-described problems and can simultaneously provide small, light, high accuracy, and high thrust points in a motor that generates a straight driving force (Patent Literature). 2).

  The spiral motor disclosed in Patent Document 2 integrates a screw mechanism that converts rotational motion into translational motion and a power mechanism that uses electromagnetic force, so that the linear motor simultaneously has small, light, high accuracy, and high thrust points. It constitutes a motor. This spiral motor eliminates the influence of friction by making the screw mechanism non-contact by electromagnetic force, thereby enabling highly accurate positioning control. Moreover, since the area of the screw mechanism portion on which the electromagnetic force is applied can be increased, the magnetic flux can be used effectively, and a larger thrust than that of a conventional linear motor having the same volume and weight can be obtained.

A spiral motor has a movable part and a fixed part that are both formed in a spiral shape, and by combining both spiral parts with each other, the spiral motor rotates in a spiral shape and linearly moves in the axial direction to generate thrust. With the configuration, a high thrust can be obtained in the same manner as the reduction gear, and a high thrust can be obtained by utilizing a large area facing the movable portion and the fixed portion in the axial direction.
JP-A-9-56143 Patent 3712073

  The above-described spiral motor is configured such that both the movable part and the fixed part are formed in a spiral shape, and the two spiral parts are combined with each other to generate a thrust force by linearly moving in the axial direction while rotating spirally. Therefore, in order to manufacture a spiral motor, it is necessary to form the movable part and the fixed part with the same spiral pitch.

  The components of rotors and stators provided in conventionally known motors are usually flat and generally symmetric with respect to the direction of the rotation axis. These components are processed by casting, forging, and electric discharge. It can be performed relatively easily by using a processing technique such as wire processing.

  On the other hand, each component of the movable part and the fixed part included in the spiral motor has a spiral shape that characterizes the spiral motor. Since such a spiral-shaped member has a generally asymmetric shape with respect to the rotation axis direction, the processing of these components cannot be easily performed depending on the processing technology normally used. Even if it is, it has the problem on processing that it is assumed that a large amount of cost and processing time are required.

  Accordingly, an object of the present invention is to solve the above-described problems and easily realize a spiral shape characterizing the spiral motor.

  According to the present invention, the spiral shape that characterizes the movable portion and the fixed portion of the spiral motor is divided into a plurality of blocks to easily realize the spiral shape. Here, the movable part of the spiral motor of the present invention is called a mover, and the fixed part is called a stator.

  The present invention has two modes: a spiral motor mode and a spiral motor manufacturing method mode.

  An aspect of the spiral motor of the present invention includes a mover including a central shaft and a spiral-shaped portion provided on the outer periphery of the central shaft, and a stator including a spiral hollow magnetic pole having the same pitch as the spiral-shaped portion of the mover. .

  The mover and the spiral motor are configured by dividing a spiral component into a plurality of divided blocks.

  The mover is composed of a plurality of mover blocks formed by dividing the spiral portion, and the mover blocks are arranged in a spiral shape along the central axis. On the other hand, the stator is composed of a plurality of stator blocks formed by dividing fan-shaped hollow magnetic poles, and the stator blocks are arranged in a spiral shape along the central axis.

  The central axis of the mover is arranged in the hollow magnetic pole of the stator, and the spiral part of the mover is rotatable in a spiral shape in the spiral groove of the hollow magnetic pole of the stator. Accordingly, the mover moves linearly in the axial direction while rotating spirally with respect to the stator.

  The mover of the present invention forms one pitch of a spiral by making six mover blocks adjacent to each other. In the stator of the present invention, one pitch of the spiral is formed by adjoining six blocks of the stator blocks.

  The mover block of the present invention includes permanent magnets on both sides of the spiral side surface in the axial direction of the spiral portion. In the stator block of the present invention, three-phase windings that are 120 degrees out of phase with each other are wound in the axial direction on both sides of the spiral shape in the axial direction of the hollow magnetic pole. The stator block has slots on both sides of the spiral shape of the hollow magnetic pole, and a winding is wound around the slots.

  The spiral spiral both side surfaces of the hollow magnetic pole provided in the stator block of the present invention have three surfaces: a central plane along the spiral direction and two inclined surfaces on both sides of the central plane. . The inclined surface is inclined in the opposite direction with respect to the central plane. In the magnetic pole surface of the stator block, when the side surface portion on the side of the adjacent stator block is an inclined surface, a step between the stator blocks can be reduced when the stator is configured by combining the stator blocks.

  In the present invention, in order to assemble a plurality of stator blocks in a spiral shape, a frame for fixing the stator blocks on the outer periphery thereof is provided. The frame of the present invention can be constituted by the same number of frame plates as the stator blocks corresponding to one pitch of the spiral. Each frame plate includes a groove for attaching a stator block at a pitch of one spiral. By incorporating the stator block into the groove, the stator block can be attached to the frame in a spiral configuration.

  An aspect of a method for manufacturing a spiral motor according to the present invention includes a mover including a central axis and a spiral-shaped portion provided on an outer periphery of the central shaft, and a stator including a spiral hollow magnetic pole having the same pitch as the mover spiral-shaped portion. The mover's central axis is placed in the stator's hollow magnetic pole, the mover's spiral is rotatable in the spiral groove of the stator's hollow magnetic pole, and the mover rotates in a spiral with respect to the stator. A method of manufacturing a spiral motor that moves linearly in the axial direction. In this manufacturing method, a plurality of mover blocks formed by dividing a spiral portion are arranged in a spiral shape along a central axis to form a mover, and a plurality of stator blocks formed by dividing a fan-shaped hollow magnetic pole are arranged in the center. A stator is arranged by spiral arrangement along an axis, and the mover is incorporated into the stator by introducing the mover spiral part into the spiral groove of the hollow magnetic pole of the stator while rotating in a spiral manner. .

  According to the stator manufacturing method of the present invention, the mover and the stator can each be configured by arranging a plurality of mover blocks in a spiral shape in the axial direction. Processing can be facilitated by processing each mover block and stator block obtained by dividing each of the mover block and the stator, instead of processing the spiral shape of the mover and stator integrally.

  According to the present invention, the spiral shape characterizing the spiral motor can be easily realized.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 5 are diagrams for explaining the configuration and manufacturing method of the mover, FIGS. 6 to 15 are diagrams for explaining the configuration and manufacturing method of the stator, and FIG. 16 shows the mover and the stator. It is a figure which shows a state combining.

  The spiral motor of the present invention includes a mover including a central axis and a spiral-shaped portion provided on the outer periphery of the central axis, and a stator including a spiral hollow magnetic pole having the same pitch as the mover spiral-shaped portion. The shaft is placed in the stator's hollow magnetic pole, the spiral part of the mover is rotatable in a spiral shape in the spiral groove of the stator's hollow magnetic pole, and the mover is rotated in the spiral direction relative to the stator in the axial direction. It is a direct-acting spiral motor.

  Here, in this spiral motor, the moving body side that moves linearly in the axial direction while rotating in a spiral shape is referred to as a mover, and the fixed body side with respect to the movement of the mover is referred to as a stator. The mover cooperates with the magnetic field formed on the stator side to generate a driving force, supports the magnetic pole portion, and applies the driving force including the generated rotational force and linear force to the outside. And a shaft portion to be provided. Further, the stator includes a fixing portion that generates a magnetic field for the magnetic pole on the mover side and generates an acting force on the mover.

  In the spiral motor of the present invention, the spiral mover and the stator are each divided into a plurality of blocks, and the plurality of mover blocks and the stator blocks are arranged in a spiral shape to constitute a spiral body.

  First, the mover will be described with reference to FIGS.

  1 and 2 are schematic perspective views of the mover block. The mover 20 includes a plurality of mover blocks 21 formed by dividing the spiral shape at a predetermined division pitch in the direction of spiral movement.

  The mover 20 forms a pseudo spiral shape by arranging the plurality of mover blocks 21 in a spiral shape. The division pitch of the mover block 21 can be determined by dividing one pitch interval of the spiral shape into a predetermined number. For example, when the division pitch is determined by dividing the number of divisions into six, one pitch interval of the spiral shape of the mover 20 is formed by arranging the six mover blocks 21 in a spiral shape.

  The mover block 21 includes a mover core 22 and permanent magnets 23 attached to both side surfaces of the mover core 22 in the axial direction. FIG. 1 shows the mover core 22, and FIG. 2 shows a state where the permanent magnet 23 is attached to the mover core 22.

  The mover core 22 has a small-diameter inner peripheral surface 22c and a large-diameter outer peripheral surface 22d, has a generally fan-like shape, and has side surfaces 21a and 21b that form axially opposed surfaces. For example, the mover core 22 may be formed by laminating electromagnetic steel plates such as silicon steel plates, or by machining such as cutting. Permanent magnets 23 are attached to the side surfaces 21a and 21b of the mover core 22 to form magnetic poles. The permanent magnet 23 can be attached to the mover core 22 by pinning, for example.

  Further, the circumferential end surfaces 21e and 21f of the mover core 22 are adjacent to each other when the mover cores 22 are arranged side by side in the spiral direction.

  FIG. 4 shows a schematic configuration of the mover, and FIG. 3 shows a state in the middle of forming the mover. The mover 20 is formed by attaching a mover block 21 to the outer periphery of the shaft 24 in a spiral shape. The mover blocks 21 are connected to each other by being attached at a predetermined angle with respect to the axial direction of the shaft 34, and the mover blocks 21 are sequentially shifted in the axial direction by a predetermined amount, thereby forming a spiral shape as a whole. .

  FIG. 5 shows a view of the mover 20 as seen from the side along the length direction of the shaft 24. The mover 20 is formed in a spiral shape by attaching a plurality of mover blocks 23 to the shaft 24 while being shifted at a predetermined pitch.

  The fan-shaped angle of the mover block 23 can be determined by, for example, the number of mover blocks 23 that are arranged while the spiral surface is shifted by one pitch. For example, when a spira surface for one pitch is formed by arranging six mover blocks 23, the center angle of the fan portion of each mover block 23 should be approximately 60 ° (= 360 ° / 6). Can do.

  Each mover block 23 is attached so as to be displaced in the axial direction by being arranged at a predetermined angle with respect to a direction orthogonal to the shaft 24. A predetermined number (e.g., six) of mover blocks 21 are attached while being shifted in the axial direction, and a spiral surface for one pitch is formed by attaching one turn. In addition, when the mover block 23 is attached to the shaft 24, the attachment angle with respect to the shaft 24 can be determined by one pitch of the spiral surface and the number of mover blocks 23 per turn.

  Next, the stator will be described with reference to FIGS.

  6 and 7 are schematic perspective views of the stator block. The stator 30 includes a plurality of stator blocks 31 formed by dividing the spiral shape at a predetermined division pitch in the direction of spiral movement. The stator 30 forms a pseudo spiral shape by arranging the plurality of stator blocks 31 in a spiral shape. The division pitch of the spiral block 31 can be determined by dividing one pitch interval of the spiral shape into a predetermined number. For example, when the division pitch is determined by dividing the number of divisions into six, one pitch interval of the spiral shape of the stator 30 is formed by arranging six spiral blocks 31 in a spiral shape.

  Here, the spiral motor combining the mover 20 and the stator 30 can be configured by determining the pitch of the spiral shape of the mover 20 together.

  The stator block 31 includes a stator core 32 and a coil 33 wound around the stator core 32. 6 shows the stator core 32, and FIG. 7 shows a state in which the coils 33 (33a, 33b) are wound around the stator core 32. FIG.

  The stator block 31 has a generally fan shape, and a coil is wound between the magnetic pole faces (first magnetic pole faces 32b and 32c) provided on both sides of the central core 32a and the central core 32a and the magnetic pole face. Coil winding cores 32d and 32e forming slots to be formed. By arranging the radial side portions of the fan-shaped stator block 31 adjacent to each other, a spiral magnetic stator 30 having a hollow magnetic pole through which the shaft 24 passes is formed in a fan-shaped main portion.

  Stator core 32 may be formed by laminating electromagnetic steel plates such as silicon steel plates, or by machining such as cutting. In forming the stator core 32, a slot for winding a coil and a magnetic pole portion are formed. Further, in order to prevent abnormal torque of harmonic asynchronous torque, skew may be provided by cutting obliquely.

  On the coil winding cores 32d and 32e of the stator block 31, three-phase coils whose phases are shifted by 120 degrees are wound in the axial direction. By supplying a drive current to the coil winding cores 32d and 32e, magnetic flux is generated from the first magnetic pole surface 32b and the first magnetic pole surface 32c. The magnetic flux generated from the first magnetic pole surface 32b and the first magnetic pole surface 32 acts on the magnetic flux of the permanent magnet 23 of the mover 20 facing in the axial direction to cause the mover 20 to generate a driving force. Since both the mover 20 and the stator 30 have spiral shapes on their opposing surfaces, it is possible to obtain two acting forces, that is, a rotating acting force and a linear acting force. The torque (rotational force) and thrust (straight force) of the spiral motor of the present invention are generated by electromagnetic forces that intersect between the spiral side surfaces of the opposing magnetic poles of the mover and stator, and are controlled independently. can do.

  8 to 10 show the state in which the stator 30 is configured by arranging the stator blocks 31 in a spiral shape. The stator 30 may have either a right-handed spiral structure or a left-handed spiral structure. The stator 20 and the mover 30 are formed so that the spirals are in the same winding direction. The stator 30 shown in FIG. 8 shows a right-handed spiral, and FIG. 9 shows a left-handed spiral. FIG. 10 shows a state in which the stator 30 is viewed from the lateral direction along the axial direction. Note that the left-handed spiral mover is not shown.

  By arranging the stator blocks 31 in a spiral shape, a spiral stator 30 is formed. In the figure, an example is shown in which one pitch of a spiral is formed by arranging six stator blocks 31. By connecting the spiral arrangement in the axial direction continuously, the stator 30 having an arbitrary length can be formed.

  Further, in the schematic configuration shown in FIGS. 8 to 10, the fan-shaped main portion of each stator block 31 has a hollow portion extending in the axial direction to form a space through which the shaft 24 of the mover 20 passes, and is adjacent in the axial direction. The spiral gap formed between the opposing magnetic poles between the stator blocks 31 to form a space through which the spiral magnetic pole surface of the mover 20 passes.

  11 and 12 show a state in which the stator block is fixed. The stator block 31 is an individually separated component, and the stator 30 is configured only after the components are arranged in a spiral shape. The mover 20 is driven by a driving force generated by the intersection of electromagnetic forces generated by the mover 20 and the stator 30. Therefore, it is necessary to arrange the stator blocks 31 in a spiral shape and fix them in an arranged state.

  The spiral motor 10 of the present invention uses the frames 40 and 41 to position the stator block 31 at a predetermined position and fix the stator block 31 at that position. FIG. 11 shows an example of a cylindrical frame 40, and FIG. 12 shows an example of a polygonal cylindrical frame 41.

  In the configuration example shown in FIG. 11, the stator blocks 31 are arranged in a spiral shape on the inner peripheral surface of a hollow cylindrical frame 40. Further, in the configuration example shown in FIG. 12, the stator blocks 31 are arranged in a spiral shape on the inner peripheral surface of a polygonal hollow frame 41.

  In these arrangements, in order to position the stator block 31, for example, a positioning groove is provided on the inner peripheral surface of the frame 40 or the frame 41, and the stator block 31 is fitted in the groove. The stator block 31 may be incorporated in the positioning rack, and the rack may be inserted into the frame 40 or the frame 41 for attachment.

  In the configuration example of FIG. 12, the frame 41 forms a polygonal cylindrical body by a plurality of frame plates 42a to 42f. For attachment of the stator block 31 to the frame 41, a plurality of frame plates 42a to 42f are combined to form a cylinder in advance, and each stator block 31 is attached to the cylinder, and each frame plate 42a to 42f is attached to the frame plate 42a to 42f. After attaching the stator block 31, these frame plates 42a to 42f may be combined to form a cylinder.

  FIGS. 13 and 14 are diagrams for explaining an example in which a cylindrical body is formed by combining frame plates 42a to 42f to which the stator block 31 is attached.

  In FIG. 13, each of the frame plates 42 a to 42 f is attached with the stator block 31 in a separated state. The mounting position of the stator block 31 is determined at a predetermined pitch interval so as to be arranged in a spiral shape when the frame 41 is configured by combining the frame plates 42a to 42f.

  For this positioning, as shown in FIG. 14, for example, a positioning and fixing groove 43 is formed on the frame plates 42a to 42f (FIG. 14A), and the stator block 31 is fitted in the groove 43. (FIG. 14B). The grooves are formed at a predetermined angle so that the stator blocks 31 are arranged in a spiral shape.

  In the frame plates 42a to 42f to which the stator block 31 is attached, side frames of adjacent frame plates are adjacent to each other, and the frame 41 is configured by combining the stator blocks 31 to be inside.

  In FIG. 13, each frame plate 42 a to 42 f shows an independent configuration, but each frame plate 42 a to 42 f is formed of a continuous plate member and is folded along a pre-formed fold. 41 may be configured.

  Further, the magnetic pole surfaces (the first magnetic pole surface 32b and the second magnetic pole surface 32c) of the stator core 32 provided in each stator block 31 have the same planar shape, and no step is generated at adjacent locations when arranged in a spiral shape. Thus, it can be set as a curved surface shape or the shape which combined several planes.

  FIG. 15 shows an example in which the magnetic pole surface of the stator core 32 is configured in a shape combining a plurality of planes. In the configuration example shown in FIG. 15, an example in which the magnetic pole surface of the stator core 32 is configured by three planes is shown. In FIG. 15, the magnetic pole surface 32 b includes a central plane 32 </ b> A, first inclined surfaces 32 </ b> B on both sides, and second inclined surfaces 32 along the radial direction connecting the fan-shaped main portion and the outer peripheral portion.

  FIG. 15B shows a cross section of the stator core 32. The first inclined surface 32B is inclined with respect to the plane 32A so as to descend toward the edge direction, while the second inclined surface 32C is inclined with respect to the plane 32A so as to rise toward the edge direction. The

  FIG. 15C shows an adjacent state when the stator blocks 31 are arranged in a spiral shape. In the adjacent state, the first inclined surface 32 </ b> B of one stator core 32 is adjacent to the second inclined surface 32 </ b> C of the other stator core 32. At this time, since the first inclined surface 32B and the second inclined surface 32C are inclined in opposite directions, the displacement between the stator cores due to the spiral shape is reduced and the amount of the step is reduced. The

  The mover 20 and the stator 30 are respectively formed as described above, and the spiral motor 10 is configured by combining the mover 20 and the stator 30. FIG. 16 shows the spiral motor 10 in a state where the mover 20 and the stator 30 are combined. Here, the frame is not shown.

  The combination of the mover 20 and the stator 30 is a spiral in which the shaft 24 of the mover 20 is inserted into a space formed in the axial direction in the central portion of the stator 30 and is sandwiched between spiral portions formed by the stator blocks 31 of the stator 30. In the gap, the spiral magnetic pole portion of the mover 20 can be inserted by rotating in a spiral shape.

  At this time, the pitch of the spiral of the mover 20 and the pitch of the spiral of the stator 30 are matched, so that the magnetic poles of the mover 20 and the magnetic poles of the stator 30 do not come into contact with each other while maintaining a predetermined surface interval and linear motion. And can be driven in a spiral.

It is a schematic perspective view of the mover block of this invention. It is a schematic perspective view of the mover block of this invention. It is a schematic perspective view of the mover block of this invention. It is a figure which shows the state in the middle of forming the mover of this invention. It is a figure which shows schematic structure of the mover of this invention. It is a schematic perspective view of the stator block of this invention. It is a schematic perspective view of the stator block of this invention. It is a perspective view which shows the outline of the stator of this invention. It is a perspective view which shows the outline of the stator of this invention. It is a top view which shows the outline of the stator of this invention. It is a figure which shows the stator block and frame of this invention. It is a figure which shows the stator block and frame of this invention. It is a figure which shows the combination of the stator block and frame of this invention. It is a figure which shows the combination of the stator block and frame of this invention. It is a figure which shows the example which comprises the magnetic pole surface of the stator core of this invention in the shape which combined several planes. It is a figure which shows the combined state of the mover and stator of the spiral motor of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Spiral motor, 20 ... Mover, 21 ... Mover block, 22 ... Mover core, 23 ... Permanent magnet, 24 ... Shaft, 30 ... Stator, 31 ... Stator block, 32 ... Stator core, 32a ... Central core, 32b ... First magnetic pole Surface, 32c ... 2nd magnetic pole surface, 32d ... Coil winding core, 32e ... Coil winding core, 33a ... Coil, 33b ... Coil, 40 ... Frame, 41 ... Frame, 42 ... Frame plate, 43 ... Groove.

Claims (8)

A mover comprising a central axis and a spiral-shaped portion provided on the outer periphery of the central axis;
A stator having spiral hollow magnetic poles having the same pitch as the spiral part of the mover,
The mover has a plurality of mover blocks formed by dividing the spiral portion, and the mover blocks are arranged in a spiral shape along the central axis.
The stator has a plurality of stator blocks formed by dividing the fan-shaped hollow magnetic pole, and the stator blocks are arranged in a spiral shape along the central axis.
A central axis of the mover is disposed in the hollow magnetic pole of the stator, and a spiral portion of the mover is spirally rotatable in a spiral groove of the hollow magnetic pole of the stator. A spiral motor characterized by linearly moving in an axial direction while rotating in a spiral shape.   The mover forms one pitch of the spiral by adjoining six blocks of the mover block, and the stator forms one pitch of the spiral by adjoining six blocks of the stator block. Item 2. The spiral motor according to Item 1.   2. The spiral motor according to claim 1, wherein the mover block includes permanent magnets on both sides of the spiral side surface in the axial direction of the central axis among the surfaces of the spiral part.   The stator block is characterized by winding three-phase windings that are shifted in phase by 120 degrees in the axial direction on both sides of the spiral shape in the axial direction of the central axis among the surfaces of the hollow magnetic pole. The spiral motor according to claim 1.   The spiral motor according to claim 1, wherein the stator block includes slots on both sides of the spiral shape of the hollow magnetic pole, and a winding is wound around the slots. The axially spiral side surfaces of the hollow magnetic pole provided in the stator block have three surfaces: a central plane along the spiral direction and two inclined surfaces on both sides of the central plane.
The spiral motor according to any one of claims 1 to 5, wherein the inclined surface is inclined in a reverse direction with respect to the central plane. A frame for fixing the stator block on its outer periphery;
The frame has the same number of frame plates as the stator block corresponding to one pitch of the spiral,
The spiral motor according to any one of claims 1 to 6, wherein the frame plate includes grooves for attaching the stator block at intervals of one pitch of the spiral. A mover comprising a central axis and a spiral-shaped portion provided on the outer periphery of the central axis;
A stator having spiral hollow magnetic poles having the same pitch as the mover spiral portion,
A central axis of the mover is disposed in a hollow magnetic pole of the stator, a spiral portion of the mover is rotatable in a spiral shape in a spiral groove of the hollow magnetic pole of the stator, and the mover is moved with respect to the stator. A method of manufacturing a spiral motor that linearly moves in an axial direction while rotating in a spiral shape,
A plurality of mover blocks formed by dividing the spiral portion are arranged in a spiral shape along the central axis to constitute a mover,
A plurality of stator blocks formed by dividing the fan-shaped hollow magnetic pole are arranged in a spiral shape along the central axis to constitute a stator,
A method for manufacturing a spiral motor, wherein a spiral portion of the mover is introduced into a spiral groove of a hollow magnetic pole of the stator while being spirally rotated to be incorporated into the stator.