JP4895004B2 - Surface motor - Google Patents

Description

  The present invention relates to a surface motor having a good production yield.

  Prior art documents related to the surface motor include the following.

Japanese Patent No. 3673499

FIG. 4 is a diagram illustrating the configuration of a conventional example that is generally used, and FIG. 5 is a detailed diagram illustrating the main part of FIG. 4. FIG. 4A is a front view, and FIG.
In the surface motor, a platen 2 made of an electromagnetic steel ingot is arranged facing the slider 1, and a platen base 3 is provided to support the platen 2.
An arrow A indicates an example of an operation direction of the slider 1. The movement direction performs omnidirectional movement on a two-dimensional plane.

As shown in FIG. 5, the platen 2 has grooves 4 machined into a two-dimensional lattice pattern by etching, cutting or grinding.
The groove 4 is filled with a nonmagnetic material body 5 such as resin, and the surface of the platen 2 is made into a precise plane by grinding.
The platen 2 and the platen base 3 are fixed by welding or adhesion.

FIG. 6 is a diagram illustrating the configuration of another conventional example that is generally used.
In this conventional example, the platen 6 is configured by laminating thin steel plates that are electrically insulated.
Compared to the conventional example of FIG. 4, the iron loss can be reduced and the characteristics and efficiency of the motor can be improved.

However, the conventional example of FIG. 6 has the following problems.
The problem of the laminated platen 6 is in the processing of the two-dimensional lattice grooves.
Unlike the platen 2 of the magnetic steel ingot, the processing of the groove 4 in the vicinity of the lamination boundary causes peeling or missing of the laminated plate as shown in FIG.

This deteriorates motor characteristics and product quality.
The cause of the peeling is that a thinned portion of the processed laminated board is generated. If it is thin, it will be caught in the machined teeth, causing peeling or missing.
When thin steel plates having a certain thickness tolerance are laminated, deviation from the machining position of the groove 4 occurs due to accumulation of variations, and peeling occurs when the position of the groove 4 approaches the lamination boundary surface.

As a measure against peeling, the processing of the groove 4 can prevent peeling by aiming at the thickness center of the laminated plate and leaving a large amount of remaining white.
Although there is a method of aligning the same plate thickness as much as possible, it is necessary to sort out, which increases the cost and is not practical.

  An object of the present invention is to solve the above problems, and to provide a surface motor that can prevent peeling of a thin laminated sheet and has a good production yield.

In order to achieve such a problem, in the present invention, in the surface motor of claim 1,
In a surface motor comprising a laminated steel plate in which a plurality of magnetic thin plates are laminated and provided with a grid-like groove, and a platen base on which the laminated steel plate is fixed, the side surface of the groove is any laminated steel plate A laminated steel plate body comprising a plurality of unit laminated bodies laminated in a predetermined number so as to pass through substantially the center of the thickness, a side surface of a projection provided on the platen base, and a unit laminated body in contact with the side surface of the projection. And a thickness direction positioning means for positioning the unit laminated body in the thickness direction for each unit laminated body.

In the surface motor according to claim 2 of the present invention, in the surface motor according to claim 1,
A length formed by a protrusion provided on the platen base and a notch groove provided on the bottom surface of the unit laminate and fitted to the protrusion, for positioning the unit laminate in the longitudinal direction for each unit laminate. A vertical direction positioning means is provided.

In the surface motor according to claim 3 of the present invention, in the surface motor according to any one of claims 1 to 2 ,
The protrusion has a quadrangular prism shape.

□ In the surface motor according to claim 4 of the present invention, in the surface motor according to any one of claims 1 to 3 ,
□ The protrusions are arranged in a staggered pattern on the platen base.

In the surface motor according to claim 5 of the present invention, in the surface motor according to any one of claims 1 to 4 ,
The laminated steel plate is made of pure iron, an electromagnetic steel plate, or a magnetic material having a high saturation magnetic flux density.

According to claim 1 of the present invention, there are the following effects.
When the lattice-like grooves on the surface of the platen made of laminated steel plates are processed, a surface motor with good production yield can be obtained without peeling of the laminated steel plates.

According to claim 2 of the present invention, there are the following effects.
Since the length direction positioning means for positioning the unit laminated body in the length direction is provided for each unit laminated body provided on the platen base, a surface motor capable of aligning the unit laminated body in the length direction can be obtained. .

According to claim 3 of the present invention, there are the following effects.
Since the protrusion has a quadrangular prism shape, the positioning surface is flat, and a surface motor capable of reliable positioning can be obtained.

According to claim 4 of the present invention, there are the following effects.
Since the protrusions are arranged in a staggered manner on the platen base, the thickness direction positioning means and the length direction positioning means can be easily positioned without colliding with each other. A surface motor that can be formed is obtained.

According to claim 5 of the present invention, there are the following effects.
Since the laminated steel sheets are laminated with magnetically insulated magnetic bodies, a surface motor that can reduce iron loss can be obtained.

Hereinafter, the present invention will be described in detail with reference to the drawings.
1A and 1B are explanatory views of the main configuration of an embodiment of the present invention. FIG. 1A is a front view, FIG. 1B is a plan view, FIG. 2C is a side view, and FIG. ) Is a front view, (b) is a plan view, (c) is a side view, and FIG. 3 is an explanatory view of FIG.
In the figure, the same symbol structure as in FIG. 6 represents the same function.
Only the difference from FIG. 6 will be described below.

In FIG. 1, a laminated steel sheet body 11 has a plurality of unit laminated bodies 111 that are laminated in a predetermined number so that the cut side surface of the groove 4 passes through the approximate center of the thickness of any laminated steel sheet.
In this case, one unit laminated body 111 is constituted by eight laminated steel plates. For ease of understanding, FIG. 2 (a) shows each unit stack 111. In FIG. 2 (a), one unit laminated body 111 is shown by six laminated steel plates for easy identification.
In this case, the laminated steel plate is made of pure iron, electromagnetic steel plate or a magnetic material having a high saturation magnetic flux density.

The thickness direction positioning means 12 is provided on the platen base 3 and positions the unit stacked body 111 in the thickness direction for each unit stacked body 111.
In this case, as shown in FIG. 3, the thickness direction positioning means 12 includes a side surface D of a quadrangular prism-shaped projection 121 precisely provided on the platen base 3 and a unit laminate 111 in contact with the side surface D of the projection 121. The outer surface F of the laminated surface is in contact.

The length direction positioning means 13 is provided on the platen base 3 and positions the unit stacked body 111 in the length direction for each unit stacked body 111.
In this case, as shown in FIG. 3, the length direction positioning means 13 is provided on the platen base 3 with the quadrangular prism-shaped projection 121 and the bottom surface of the unit laminate 111, and is cut into the projection 121. And a notch groove 112.

In this case, as shown in FIG. 2, the protrusions 121 are arranged in a staggered manner on the platen base 3 and are formed integrally with the platen base 3 from the beginning.
When thin plate laminated steel plates are laminated and lattice processing of the grooves 4 is performed on the platen, accumulation of variations in plate thickness of the thin plate laminated steel plates cannot be ignored.

  Therefore, the laminated body 11 side is configured by stacking a plurality of unit laminated bodies 111 that are a set of a small number of predetermined sheets, and a structure that eliminates dimensional errors for each unit laminated body 111 is constructed on the platen base 3 side. did.

In the above configuration, a plurality of unit laminated bodies 111 are created by laminating thin steel plates every few predetermined sheets. The unit laminate 111 is laminated to form the laminate 11.
As shown in FIG. 2, the positioning projections 121 are formed in a staggered pattern on the platen base 3.
When the unit laminated body 111 is fixed in accordance with the positioning projections 121 of the platen base 3, the unit laminated body 111 is positioned in the thickness direction.

That is, the positioning in the thickness direction for each stacked body 111 is determined by abutting the hatched portions of the unit stacked body 111 and the protrusion 121 with each other as shown in FIG. As a result, the accumulated error of the laminate can be removed.
The platen base 3 serving as a support for the unit laminate 111 is an integral type, and the unit laminate 111 is fixed to the platen base 3 in close contact with the platen base 3.

As a result,
When the lattice-shaped grooves 4 are processed, a surface motor can be obtained in which the laminated steel sheets are not peeled off and the manufacturing yield is good.

  Since the thickness direction positioning means 12 is configured by the side surface of the protrusion 121 provided on the platen base 3 and the outer surface of the stacked surface of the unit stacked body 111 in contact with the side surface of the protrusion 121, An inexpensive surface motor can be obtained.

  Since the length direction positioning means 13 provided in the platen base 3 for positioning the unit laminated body 111 in the length direction is provided for each unit laminated body 111, the unit laminated body 111 can be aligned in the longitudinal direction. A face motor is obtained.

  The length direction positioning means 13 is composed of a protrusion 121 provided on the platen base 3 and a notch groove 112 provided on the bottom surface of the unit laminate 111 and fitted into the protrusion 121. An inexpensive surface motor can be obtained.

  Since the protrusion 121 has a quadrangular prism shape, the positioning surface is a flat surface, and a surface motor capable of reliable positioning is obtained.

  Since the protrusions 121 are arranged in a zigzag pattern on the platen base 3, the thickness direction positioning means 12 and the length direction positioning means 13 do not interfere with each other, and the thickness direction positioning means 12 and the length direction positioning means 12 do not interfere with each other. A surface motor that can be easily formed with the positioning means 13 is obtained.

  The laminated steel sheet can provide a surface motor capable of reducing iron loss by laminating electrically insulated magnetic materials.

The above description merely shows a specific preferred embodiment for the purpose of explanation and illustration of the present invention.
Therefore, the present invention is not limited to the above-described embodiments, and includes many changes and modifications without departing from the essence thereof.

BRIEF DESCRIPTION OF THE DRAWINGS It is principal part structure explanatory drawing of one Example of this invention, (a) is a front view, (b) is a top view, (c) is a side view. 1A is a front view, FIG. 1B is a plan view, and FIG. 1C is a side view. It is explanatory drawing of FIG. It is structure explanatory drawing of the prior art example generally used conventionally. FIG. 5 is an explanatory diagram of a main part configuration of FIG. It is composition explanatory drawing of the other conventional example generally used conventionally. It is explanatory drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Slider 2 Platen 3 Platen base 4 Groove 5 Nonmagnetic material body 6 Platen 11 Laminated steel plate body 111 Unit laminated body 112 Notch groove 12 Thickness direction positioning means 121 Protrusion 13 Length direction positioning means A Arrow D Side surface F of the protrusion 121 The outer surface of the laminate surface of the unit laminate 111

Claims (5)

In a surface motor including a platen base on which a lattice-like groove is provided in a laminated steel plate in which a plurality of magnetic thin plates are laminated, and the laminated steel plate is fixed,
A laminated steel sheet body comprising a plurality of unit laminates laminated in a predetermined number so that the side surface of the groove passes through the approximate center of the thickness of any laminated steel sheet;
Thickness that is configured by the side surface of the protrusion provided on the platen base and the outer surface of the stacked surface of the unit stacked body in contact with the side surface of the protrusion, and that positions the unit stacked body in the thickness direction for each unit stacked body A surface motor comprising: a vertical direction positioning means. A protrusion provided on the platen base;
A lengthwise positioning means for positioning the unit laminate in the lengthwise direction for each unit laminate, comprising a notch groove provided on the bottom surface of the unit laminate and fitted into the protrusion. The surface motor according to claim 1. The surface motor according to claim 1, wherein the protrusion has a quadrangular prism shape. The surface motor according to any one of claims 1 to 3, wherein the protrusions are arranged in a staggered manner on the platen base. The surface motor according to any one of claims 1 to 4 , wherein the laminated steel plate is made of pure iron, an electromagnetic steel plate, or a magnetic body having a high saturation magnetic flux density.

Images