JPH06284684A - Method for positioning armature windings for linear motor - Google Patents

Abstract

PURPOSE:To reduce the manhour of linear motor assembly and to increase the accuracy of pole positions by making both edges of a very small gap which can be made by folding a strip coil agree with the center of a positioning hole to eliminate the displacement of a screwed fold coil. CONSTITUTION:A positioning hole 3 is provided in the position corresponding to a pole pair pitch (p) to be equal to the width of a screwed fold coil 2 in the direction of the width of a board 1 and along the direction of the length of the board 1. Next, since the screwed fold coil 2 is fixed in the board 1, an adhesive pre-preg 4 is applied thereto. Next, a screwed coil 2 is placed on the adhesive pre-preg 4, but a strip coil is bent in the shape of a screw at every pole pair pitch in the process of manufacturing the screwed fold coil 2, and therefore a very small gap G is produced at every pole pair pitch of the screwed fold coil 2. Both edges of the very small gap is so located as to agree with the center of a positioning hole 3, and the screwed fold coil 2 is heated and bonded by pressing to the board 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor for driving a precision positioning device for ultra-precision processing machines and semiconductor manufacturing / inspection, and more particularly to an armature winding positioning method for a linear motor.

[0002]

2. Description of the Related Art Conventionally, as armature windings constituting an armature of a linear motor for driving a precision positioning device, long coil sides of element coils corresponding to the number of phases are formed by winding a thin wire around a winding frame many times. Are joined together along their edges to form a plate-shaped screw-folded coil formed by bending a slender hexagonal strip-shaped coil integrally and flatly formed into a screw shape at a predetermined inclination angle and a predetermined number of times. Is disclosed (for example, Japanese Utility Model Publication No. 1-157579). When positioning this screw folding coil on the substrate, a marking line was placed on the substrate at a position corresponding to the pole pair pitch of the screw folding coil, and the pole pair pitch of the screw folding coil was visually aligned on the marking line. . Also, when the screw folding coil is mounted on both sides of the substrate, marking lines are similarly placed on both sides of the substrate for positioning.

[0003]

However, in the prior art, since the screw folding coil is placed on the scribe line of the substrate, the scribe line is hidden and an error occurs when the pole pair pitch is visually aligned with the scribe line. When the screw folding coils are mounted on both sides of the substrate, there are drawbacks that the vertical positions of the screw folding coils on both sides are displaced, it takes time to position the screw folding coils, and the polar position accuracy of the linear motor is lowered. An object of the present invention is to prevent the position of the screw-folding coil from shifting so as to reduce the number of steps for assembling the linear motor and maintain the pole position accuracy of the linear motor at a high level.

[0004]

In order to solve the above-mentioned problems, the present invention is to provide long coil sides of element coils corresponding to the number of phases, which are formed by winding a thin wire around a winding frame many times, along the edges thereof. An armature winding consisting of a plate-shaped screw-fold coil formed by bending a slender hexagonal strip-shaped coil integrally and flatly formed into a screw shape at a predetermined inclination angle and a predetermined number of times so as to be joined. In a linear motor armature winding positioning method for positioning on a substrate, a positioning hole is provided at a position equal to the width of the screw folding coil and corresponding to a pole pair pitch along the longitudinal direction of the substrate. By bending the strip-shaped coil into a screw shape at each pole pair pitch in the coil manufacturing process, both edges of a slight gap formed at each pole pair pitch are aligned with the center of the positioning hole. In particular, the positioning hole is formed by a notch hole that opens on both edges of the substrate, and the positioning part is inserted into the insertion part that fits into the positioning hole and the gap formed at each pole pair pitch of the screw folding coil. Providing a positioning jig with a protrusion protruding toward the center of the hole,
The protrusions of the positioning jig are inserted into both edges of the gap of the screw folding coil.

[0005]

With the above-mentioned means, since the strip-shaped coil is bent into a screw shape at each pole pair pitch in the process of manufacturing the screw folding coil 2, a slight gap can be formed at each pole pair pitch. Since both edges of this gap are aligned with the centers of the positioning holes provided for each pole pair pitch on the substrate, the positioning can be easily performed without the marking line.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an embodiment of the present invention. Figure 1
In FIG. 1A, a positioning hole is formed in the width direction of the substrate 1 at a position equal to the width W of the screw folding coil 2 shown in FIG. 1C and corresponding to the pole pair pitch p along the longitudinal direction of the substrate 1. 3 is provided. Next, in order to fix the armature winding consisting of the twisted coil 2 to the substrate 1, as shown in FIG.
Positioning hole 3 at the position where the screw folding coil 2 is fixed
Stick the adhesive prepreg 4 so that it will not be hidden.
The adhesive prepreg 4 is in the form of a sheet in which glass fiber or the like is impregnated with an epoxy resin. Next, the screw folding coil 2 is placed on the adhesive prepreg 4, and in the manufacturing process of the screw folding coil 2, the strip-shaped coil is bent into a screw shape at each pole pair pitch, so that as shown in FIG. , A slight gap G is generated for each pole pair pitch of the twisted coil 2. Both edges of the slight gap G formed for each pole pair pitch are aligned with the center of the positioning hole 3, and the screw folding coil 2 is heated and pressed onto the substrate 1 to be bonded as shown in FIG. . FIG. 2B shows a state in which the screw folding coils 2 are fixed on both surfaces of the substrate 1. In FIG. 3, the positioning hole 3 provided in the substrate 1 is formed by a notched hole having openings 31 on both edges of the substrate 1, and the screw folding coil 2 is positioned by a positioning jig. In this case,
As shown in (a) and (b), the opening 3 of the positioning hole 3 is formed.
The positioning jig 5 is provided with the insertion portion 51 that fits into the connector 1 and the projection portion 52 that projects so as to enter the gap G formed at each pole pair pitch of the screw folding coil 2. In addition, when fixing the screw folding coil 2 on both sides of the substrate 1,
As shown in (c) and (d), protrusions 5 are formed on both sides of the substrate 1.
The positioning jig 5 is used so that 2 is projected. When positioning the screw folding coil 2, as shown in FIGS. 5 and 6, the insertion portion 51 of the positioning jig 5 is inserted into the positioning hole 3 and the protrusion 52 enters the gap G of the screw folding coil 2. Thus, it suffices to place the screw folding coil 2 on the adhesive prepreg 4 of the substrate 1. Since the positioning holes are provided in the substrate and the gaps formed for each pole pair pitch of the screw folding coil are aligned with the positioning holes in this way, the positioning of the pole positions can be extremely easily and accurately performed.

[0007]

As described above, according to the present invention, positioning is performed by aligning the gap formed at each pole pair pitch of the armature winding composed of the screw-folded coil with the positioning hole. In addition to facilitating the positioning with respect to the substrate, the positioning can be performed accurately, the number of assembly steps of the linear motor can be reduced, and a highly accurate linear motor can be provided.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

2A and 2B are side cross-sectional views of a case where a screw folding coil is provided on one side of a substrate, and FIG. 2B is a side cross-sectional view when a screw folding coil is provided on both sides of the substrate according to an embodiment of the present invention. .

FIG. 3 is a front view of an essential part showing another embodiment of the present invention.

FIG. 4A is a front view showing a positioning jig for one side of the embodiment of the present invention, FIG. 4B is a bottom view, and FIG. 4C is a front view showing positioning jigs for both sides; Is.

FIG. 5 is a front view showing a state after assembling of the embodiment of the present invention.

FIG. 6 is a plan view showing a state after assembly of the embodiment of the present invention.

[Explanation of symbols]

 1 Board 2 Screw Folding Coil 3 Positioning Hole 31 Opening 4 Adhesive Prepreg 5 Positioning Jig 51 Insertion Part 52 Protrusion

Claims (2)

[Claims] 1. A slender tortoise shell shape integrally and flatly formed so that long coil sides of element coils corresponding to the number of phases formed by winding a thin wire around a winding frame many times are joined together. A method for positioning an armature winding of a linear motor, which positions an armature winding formed of a plate-shaped screw-fold coil formed by bending a strip-shaped coil into a screw shape at a predetermined inclination angle and a predetermined number of times on a substrate. , A positioning hole is provided at a position equal to the width of the screw-fold coil and corresponding to the pole-pair pitch along the longitudinal direction of the substrate, and the strip-shaped coil is screwed for each pole-pair pitch in the manufacturing process of the screw-fold coil. A method for positioning an armature winding of a linear motor, characterized in that both edges of a slight gap formed for each pole pair pitch are made to coincide with the center of the positioning hole by bending in a circular shape. 2. The positioning hole is formed as a notch hole that is open at both edges of the substrate, and is inserted into an insertion portion that fits into the positioning hole and a gap formed at each pole pair pitch of the screw folding coil. The linear motor according to claim 1, further comprising: a positioning jig having a protrusion protruding toward the center of the positioning hole, and the protrusion of the positioning jig is inserted into both edges of the gap of the screw folding coil. Armature winding positioning method.