JPS62126857A - Movable element for linear motor and forming method thereof - Google Patents

Abstract

PURPOSE:To reduce the weight of a movable element and to obtain a movable element having a strength against a bending and good attenuation for a vibration by joining a yoke of a magnetic unit with the element of light alloy with a rectangular calking pin. CONSTITUTION:A movable element body 5 is formed of a magnetic unit in which an irregular tees are provided in a moving direction at a predetermined pitch on the surface of a yoke on the surface facing an opposite air gap. A movable element frame 6 is made of light alloy such as aluminum to form the outer frame of the body 5. The body 5 and the fame 6 are bonded by calking with a plurality of oblong calking pins 7.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a structure of a mover in a linear motor such as a pulse excitation or synchronous motor type and a method for making the same.

[Conventional technology]

Conventionally, the mover of this type of linear motor has been made by welding a yoke made of laminated silicon steel plates and an iron frame, or by using the iron plate itself to function as a mover, in order to form a magnetic path for the effective magnetic flux that generates the driving force. There are some that have been processed to hold.

On the other hand, in order to improve the damping performance of light and photographic photography, it is possible to combine the iron part, which is the magnetic path of the moving element's motor, with aluminum alloy, which has a low specific gravity and good damping performance. There is also a case where aluminum is fixed to the iron part using Daiki 11 strike.

Alternatively, there is a method of caulking the iron part and the aluminum part with a conventional caulking pin with a flat head.

[Problem that the invention seeks to solve]

However, if the mover is entirely made of iron, the mover is tf!
The ffi is heavy, which may affect the performance of the linear motor such as actual thrust and acceleration/deceleration.

In addition, when welding, the mover is distorted and there are disadvantages such as an uneven gap facing the stator side.

Note that die-casting means for fixing aluminum to the iron part distorts and deforms thin movers due to heat shrinkage of the die-casting.

Furthermore, with the conventional method of fixing the iron part and the aluminum part with a caulking pin, the head of the bottle protrudes outside the slider, which becomes an obstacle for a linear motor, and since the bottle cross section is circular, it is weak against bending. Distortion occurs in the mover when caulking.

Here, the present invention overcomes the ff11 point of the conventional example,
It is an object of the present invention to provide a lightweight moving element of a linear motor, and to provide a moving element that is strong against bending and has good damping properties for photographing, and a method for producing the same.

(Seventh Means for Solving the Problems) According to the present invention, a yoke made of at least a magnetic material (iron) and an aluminum slider frame are joined together using a rectangular crimping pin.

[For n]

Form a knock that extends both the yoke and the slider frame by 1 tatami in the thickness direction, drill a rectangular-shaped hole that passes through both, and engage a slightly thicker rectangular-shaped J-shimebin into the hole. and push it into the hole to secure them both.

(Example) A perspective view of an embodiment of the present invention is shown in FIG.

FIG. 2 shows a configuration diagram of a linear pulse motor according to the present invention, in which (a) is a front view and (b) is a side view.

FIG. 3 shows a side sectional view in the direction of arrows taken along line XX in FIG. 1, and FIG. 4 shows a front sectional view in the direction of arrows along Y-YFII in FIG.

FIG. 5 is a diagram of the crimped state according to the present invention, (a
) Haiii'fli(Q(111 cut iMi diagram, (b)
2 is a front cross-sectional view of FIG. 2A taken in the direction of arrows along the 2-Z line.

FIG. 6 is a perspective view showing the caulking pin of the present invention and its state before being crimped onto the slider.

Moreover, FIG. 7 is an explanatory diagram showing the crimping means included in the crimping jig in the present invention.

In FIG. 2, the mover 1 is connected to the stator 2 through a certain gap.
It is supported by rows 53 and 4 so that it can be translated in parallel.

Although not shown, the stator 2 includes a core and windings sufficient for the movable element 1 to operate (move) in parallel as a linear motor.

Each of the rollers 3.4 is provided with a collar so as to guide the slider 1.

As a result, the mover 1 can freely move η in a fixed direction when a predetermined current is applied to the windings in the stator 2.

FIG. 1 shows the features of the present invention, including a slider main body 5 having a plurality of teeth made of a magnetic material (iron), a slider frame 6 made of a light alloy such as aluminum, and a plurality of slider frames 6 to which both are fixed. It consists of caulking pin 7.

In order to maintain a constant gap between the tooth surface of the mover body 5 and the core surface inside the stator 2, the mover 1 needs to have a rigidity that is not bent by the magnetic force from the stator 2.

Next, from the side of FIG. 3 and FIG. 11, and the front sectional view, mover 1
Explain the structure of

The mover main body 5 is composed of teeth portions 8 and yoke portions 9. Both are made of magnetic material, and the teeth portion 8 is made of a thin plate with equally spaced slits punched out by a press or the like, and the yoke portion 9 is formed of a single block.
The recessed portion 9 is glued with adhesive.

A knock 10 for positioning with respect to the slider frame is provided on the outer circumferential side of the yoke portion 9, and is designed to engage with a knock provided on the inner circumference of the slider frame 6.

This determines the height of the upper surface of the teeth portion 8 and the gap side of the mover frame 6 facing the stator. At the same time, it serves as a positioning knock for caulking.

A plurality of rectangular holes 11 are provided in each of the yoke W9 knock and the six mover frame notches 1 as shown in FIG. , so that they are drilled correctly.

The caulking pin 7 is shown in Fig. 6 and has a rectangular shape.
The height direction is slightly smaller than the hole 11, and the width (slightly larger than the hole 11).The height of the bin 7 is slightly higher than the sum of the slider frame 6 and the yoke portion 9.

With the above configuration, the teeth portion 8 and the yoke portion 9 are adhered at predetermined positions to form the mover main body 5.

Next, the mover frame 6 and the mover main body 5 are assembled with the knock 10 as a reference, and the caulking pin 7 is engaged with the hole 11 for the caulking pin 7 to such an extent that the bottle does not tilt.

After the bottles 7 are fitted into all the holes 11, the bottles 7 are pressed using a jig as shown in FIG.

The method is as follows.

Stoppers 13, which are slightly higher than the thickness of the slider 1, are placed on the surface plate 12 on both sides of the slider 1, and a plurality of caulking pins 7 are pressed down and inserted into the holes 11 at the same time using a press 14.

The pressure of the press 14 is applied to the bottle 7 by the stopper 13.
Since no press pressure is applied to the mover main body 5 until the press suppression surface comes into contact with the mover 1, the mover 1 will not be distorted.

Since the caulking pin 7 is a little shorter in the length direction and a little thicker in the width direction than the hole 11, the force during caulking is minimized by the pin 7 extending in the longitudinal direction, thereby minimizing the deformation of the slider 1. suppress.

At this time, the caulking pin 7 bites into the members (slider frame 6, yoke part 9) in the width direction as shown in FIG. The portion exposed on the surface of 7 expands to above the teeth portion 8 by pressing, and the end of this tooth portion 8 is stopped.

In the mover 1 created as described above, the caulking head does not protrude much more than the mover 1, and for example, it is substantially 30 mm.
μ ~ 50μ, and the pin 7 itself is larger than a normal round-headed caulking pin and has strong rigidity in the bending direction, so even a thin and lightweight slider 1 can maintain the specified strength (9 can be done.

Another embodiment of the invention is a synchronous motor type linear D-type motor instead of a linear pulse motor.

In this case, the tooth portion 8 has 141 permanent stones, and the yoke portion 9 is attached with a permanent magnet.

Further, as another embodiment of the present invention, instead of caulking the mover main body 5 and the mover frame 6 in which the teeth portions 8 are in contact with the three-way portions 9, the yoke portion 9, the teeth portions 8, and the mover There is a way to caulk the frame 6 and the ball joints together at the same time.

〔Effect of the invention〕

Thus, according to the present invention, ■ It is possible to create a slider that is strong against bending even if it is thin. ■ It is possible to create a lightweight slider with good vibration damping properties. ■ The caulking pin (b) is a strength member, and
．． Less ■ The head of the caulking pin does not come out on the gap surface in the first direction to the stator ■ Move to the first direction of creation! Distort the 111th child! You can get the effect of a snow step that is not present.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a front view and side view of a linear motor according to the invention, and Figs. 3 and 4 are Y-Y and X-X of Fig. 1. 5th cross-sectional view along the line in the direction of arrows
The figures are a side sectional view of the main part after crimping, a sectional view taken along the line 2-2 in the direction of the arrow, Fig. 6 (a perspective view showing the state before the shim pin is pressed against the slider), and Fig. 7 is the main part. It is an explanatory view of the caulking means by the caulking jig of the invention. 1... Mover, 2... Stator, 3, 4... Roller, 5... Mover main body, 6... Mover frame , 7... caulking pin, 8...-door ease part, 9... yoke part,
10...Knock.

Claims (1)

[Claims of Claims] 1. A linear device that includes a mover that is supported so as to be movable in a straight line via a certain opposing gap and forms a magnetic path on the electromagnetic induction surface of a stator in which an excitation winding is wound around a magnetic material. In a motor, the main body of the mover is made of a magnetic material, and the outer frame of the main body of the mover is made of a light alloy. What is claimed is: 1. A mover frame for a linear motor, comprising: a mover frame having a shape of a rectangular shape; and a plurality of rectangular crimping pins; 2. A slider for a linear motor according to claim 1, wherein the teeth portion is also caulked together with the yoke portion and the slider frame. 3. In a linear motor, a linear motor is equipped with a mover that is supported so as to be movable in a straight line and forms a magnetic path through a certain opposing air gap on the electromagnetic induction surface of a stator in which an excitation winding is wound around a magnetic material. A mover body made of a magnetic material, the surface of which is provided with uneven teeth portions in the direction of movement at a constant pitch on the facing surface; a mover frame made of a light alloy and forming an outer frame of the mover body; A plurality of rectangular crimping pins are provided, and the outer periphery of the slider body and the inner periphery of the slider frame are formed into a knock shape, and the two are overlapped. Drill several holes, insert caulking pins into these holes without tilting, place stoppers on both sides of the slider that stop the press from being slightly thicker than the thickness of the slider, and press the stopper with the press. A method for creating a slider for a linear motor, the method comprising pressing a caulking pin until it comes into contact with a swivel pin.