JPH03265458A - Assembling method of linear motor - Google Patents

Abstract

PURPOSE:To facilitate assembling by inserting a bolt from above a primary frame opposing to the secondary where a permanent magnet and a guide rail are arranged in the longitudinal direction in order to retain a linear bearing block on the primary and then adjusting the gap between the primary and the secondary sides. CONSTITUTION:Many permanent magnets (not shown) are arranged, with alternating polarity, in the advancing direction between the guide rails 7 on the opposite sides (only one side is shown) of a secondary base 3 thus forming a secondary track. A primary runner R, to be guided on the guide rail 7, is constituted of a bearing block 9 and a primary frame 11 provided with an armature winding (not shown) in the center of the rear surface thus forming a permanent magnet linear motor 1. Four assembling bolts 17 are screwed into the frame 11 and the ends thereof are brought into contact with the linear bearing block 9. The gap between the frame 11 and the linear bearing block 9 is adjusted by rotating the bolts 17, a gap adjusting shim is inserted and a bolt 13 is tightened to set a predetermined gap and then the bolt 17 is removed.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Field of Industrial Application) The present invention is directed to the use of permanent magnets in the magnetic circuits of permanent magnet type linear pulse motors, hybrid type linear pulse motors, permanent magnet type linear synchronous motors, etc. The present invention relates to a method for assembling a linear motor that can be applied to the used linear motor.

(Prior Art) Conventionally, as a linear motor, for example, a linear synchronous motor 1 is provided with a secondary base 3 made of flat iron, as shown in FIG. At the center of the upper surface in the longitudinal direction of this secondary base 3, permanent magnets 5 are arranged so that the polarity is alternated.
is provided.

On both sides of the upper surface of the secondary base 3 on which the permanent magnet 5 is provided, guide rails 7 extending parallel to each other are provided along the longitudinal direction of the secondary base 3.

The aluminum primary frame 11 has a plurality of linear bearing blocks 9 (four in the figure) guided by both guide rails 7 on its lower surface, fastened with bolts 13, and mounted above the secondary base 3. It is being This linear bearing block 9
The gap between the primary side 71 norm 11 and the secondary side base 3 is maintained constant.

At the center of the lower surface of the primary frame 11, armatures 1 and 5 having three-phase windings facing the permanent magnet 5 are provided.

As shown in FIG. 3, the assembly method is such that after the linear bearing block 9 is fastened to the primary frame 11 with bolts 13, the linear bearing block 9 is attached to the guide rail 7 in the direction of the arrow A.
It was inserted into.

This assembly method was adopted because it was difficult to assemble the primary frame 11 from above the secondary base 3 due to the vertical force exerted by the permanent magnets 5.

(Problems to be Solved by the Invention) However, such an assembly method using insertion may cause problems such as the balls (not shown) of the linear bearing block 9 falling off, or the work required for assembly being too long, which may impede operation. There was a problem.

The purpose of the present invention is to improve the above-mentioned problems by having a simple structure, easy handling, shortened assembly time, and
An object of the present invention is to provide a method for assembling a linear motor that causes less trouble in operation.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides permanent magnets with alternating polarities on the upper surface of the secondary base in the longitudinal direction, and An armature is provided on the lower surface facing the permanent magnet, a guide rail is provided in the longitudinal direction of the secondary base on which the permanent magnet is arranged, and a linear bearing block movably guided by the guide 1 knoll is connected to the primary A linear motor is installed on the bottom of the side frame L.
Insert the assembly pole I from above the primary side frame, press the linear bearing block with the tip of the assembly bolt, insert a shim between the primary side frame and the linear bearing block, and connect the primary side 71 norm. The method for assembling a linear motor is characterized in that the length of the gap between the linear motor and the secondary base is adjusted (5), the primary frame is assembled to the secondary base, and then the assembly bolts are removed.

(Function) By adopting the linear motor assembly method of the present invention, when the assembly bolt is inserted into the primary frame from above, the tip provided on the lower surface of the primary frame is pressed against the linear bearing block, and the assembly bolt is pressed against the linear bearing block. A shim is inserted between the side frame and the linear bearing block to adjust the gap length between the primary frame and the secondary base, and the primary frame is assembled from the upper surface of the secondary base. After that, by removing the adjustment bolt, 1. Its structure is simple, easy to handle, and assembly time is shortened.
Fewer obstacles to driving.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 shows a schematic configuration diagram of an embodiment of the present invention. In this figure, parts having the same functions as those in FIG. 2 are given the same reference numerals. For example, a permanent magnet type linear synchronous motor 1 is provided with a plurality of assembly bolts, four in this embodiment, on the primary side frame 11, and the tip thereof is in contact with the linear bearing block 9. ing.

Turn this assembly bolt 17 to create a gap between the primary frame 11 and the linear bearing block 9, insert the gap adjustment shim in the direction of the arrow A, tighten the bolt 13, and move the primary frame 1] By pulling it down in direction B, the gap length between the primary frame 11 and the secondary base 3 is adjusted and assembly is accomplished. After this assembly, the assembly bolts 17 are removed from the primary frame 11. Note that the influence of such gap length on linear motor performance characteristics has already been described in various documents.

Therefore, in the assembly method of the present invention, the assembly bolt 17
By providing this, the primary side frame]] can be assembled from the top surface of the secondary side base 3, and after the linear bearing block 9 is fastened to the primary side frame 11 with bolts 15, which is the conventional assembly method, the guide This effectively solves the problem caused by inserting and assembling the linear bearing block 9 into the I/~ Lua in the direction of the arrow A.

Note that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments by making appropriate design changes. For example, in this embodiment, a permanent magnet type linear synchronous motor is used as the linear motor, but the present invention can also be implemented with a permanent magnet type linear pulse motor, a hybrid type near pulse motor, etc., which uses a permanent magnet in the magnetic circuit. .

[Effects of the Invention] As already clear from the above description, the method for assembling a linear motor of the present invention includes providing assembly bolts on the primary frame and inserting shims between the primary frame and the linear bearing block. By adjusting the gap length between the primary frame and the secondary base and assembling the primary frame from the upper surface of the secondary base, the problems of the prior art are effectively solved. It has a simple structure, is easy to handle, shortens assembly time, and causes little trouble in operation.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention, FIG. 2 is a perspective view of a conventional linear motor, and FIG. 3 is a diagram showing a method of assembling the linear motor shown in FIG. 2. 1... Permanent magnet type linear synchronous motor 3... Secondary side base 5... Permanent magnet 79.4 guide tray, 1°9... Linear bearing block 11... Primary side frame

Claims (1)

[Claims] Permanent magnets are provided on the upper surface of the secondary side base in the longitudinal direction so that the polarities alternate as much as possible, an armature is provided on the lower surface of the primary side frame facing the permanent magnets, and the secondary side base on which the permanent magnets are arranged is provided in the longitudinal direction of the secondary side base. A guide rail is provided on the primary side frame, and a linear bearing block movably guided by the guide rail is installed on the lower surface of the primary side frame as a linear motor, and assembly is performed by inserting assembly bolts from above the primary side frame. Hold the linear bearing block with the tip of the bolt, insert a shim between the primary frame and the linear bearing block to adjust the gap length between the primary frame and the secondary base, and A method for assembling a linear motor, comprising assembling the primary frame to the secondary base and then removing the assembly bolts.