JPS6051456A - Manufacture of movable element of linear pulse motor - Google Patents

Abstract

PURPOSE:To improve the stopping accuracy and a thrust retention by forming a stator by laminating slider pieces punched from soft electromagnetic iron plates, contacting a positioning jig through a nonmagnetic metal member with both ends in a laminating direction and magnetically annealing and heating in vacuum. CONSTITUTION:Electromagnetic soft iron plates are punched to form many slider pieces 3 formed with slider teeth 2. Then, the pieces 3 are laminated to form stators 4, 4. Then, the stators 4, 4 are disposed oppositely to the teeth 2, and nonmagnetic metal members 5, 5 are disposed at both ends in a laminating direction. Eventually, positioning jigs 6, 6 having five blocks 6a are contacted so that the intervals of the teeth 2 of the stators 4, 4 become equal in such a manner that the blocks 6a are contacted with the stators 4, 4 through the members 5, 5 to be inserted between the teeth 2. In the next steps, the jigs 6, 6 are magnetically annealing and heated in vacuum at the stators 4, 4 by applying pressing force from upper and lower surfaces. Thus, the pieces 3 are closely secured, secured with the members 5, 5, thereby providing the movable element which is improved in the stopping accuracy and the thrust retention.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a mover for a linear pulse motor.

A linear pulse motor moves a movable element by exciting the movable element by energizing slider teeth formed on the movable element and facing stator teeth formed on a stator.

Traditionally, movers have been manufactured by stacking a large number of high-permeability iron plates punched into a predetermined shape and fixing the plates together by inserting pins into the plates, or by applying adhesive between the plates. to form a stator, and the two stators are made of plastic members,
A method of manufacturing a mover by assembling die-cast members has been used.

However, the method of fixing with pins has the disadvantage that production efficiency is significantly reduced because it requires a process of opening the bottle hole into the iron plate or inserting the pin into the bottle hole.

In addition, the method of fixing using adhesive has the disadvantage that the iron plates shift and stack due to uneven coating of the adhesive, and the rJJ distance between the mover and the stator is not constant, resulting in reduced stopping accuracy and variation in sustained thrust. there were.

In addition, either method requires two stator assembly steps, which further reduces production efficiency.

An object of the present invention is to provide a method for manufacturing a linear pulse smoker mover that can eliminate such drawbacks.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

First, as shown in FIG. 1, a large number of slider pieces 3 having slider teeth 2 formed thereon are formed by punching an electromagnetic soft iron plate 1 finished to a uniform thickness using a press.

Next, a large number of degreased slider pieces 3 are laminated to form two stators 4, 4 as shown in FIG.

Next, the stators 4, 4 are arranged with the slider teeth 2 facing each other, and the nonmagnetic metal members 5, 5 are arranged at both ends in the stacking direction.

Finally, positioning jigs 6, 6 made of a non-metallic material such as ceramic and having five block parts 6a are inserted so that the intervals between the slider teeth 20 of the stators 4, 4 are equal. It is applied to the stators 4, 4 through the non-magnetic metals 5, 5 so as to do so. By applying the positioning jigs 6, 6, the stacked stators 4, 4 without shifting as shown in FIG. Magnetic annealing heating is performed in a vacuum together with the positioning jigs 6 and 6 by applying force.

By magnetic annealing and heating in a vacuum, the slider pieces 3 are closely fixed together, the nonmagnetic metal members 5, 5 and the slider piece 3 are closely fixed, and the two stators 4, 4 are connected. Furthermore, the magnetic annealing heat eliminates processing strain caused by press working in the slider piece 3, and the magnetic properties of the stators 4 are improved.

Note that if the stator is formed by interposing a non-magnetic metal member such as stainless steel between each slider piece 3, the core loss of the stator can be further reduced and a movable element with good magnetic properties can be obtained.

In addition, as shown in FIG.
Alternatively, one stator may be formed by integrally punching the stator, and after magnetic annealing and heating in vacuum, the connecting portion 3a is cut off to separate the stator.

As described above, according to the present invention, by magnetically annealing the stator and a non-magnetic metal member in a vacuum, the slider pieces constituting the stator can be closely fixed without using bottles or adhesives as in the past. At the same time, it is possible to connect and fix the poetry electronics, thereby shortening the manufacturing process and improving the stopping accuracy and holding force of the movable element.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the slider piece, Figure 2 is a perspective view of two stators, Figure 3 is a perspective view of the process of placing non-metallic members on the stator, and Figure 4 is a perspective view of the positioning jig attached. FIG. 5 is a perspective view of the movable element, and FIG. 6 is a perspective view of another embodiment. ---J. 2...Slider tooth 3...Slider piece 4...Fixer 5...Non-magnetic metal member 6...Non-metal member Name of applicant Tokyo Heavy Equipment Industry Co., Ltd. Figure 1 1 Figure 2 JP-A-Sho GO-51456 (4)

Claims (1)

[Claims] A large number of slider pieces with slider teeth formed by punching an electromagnetic soft iron plate are formed, and the slider pieces are laminated to form a stator, and then a non-metallic member is inserted at both ends in the lamination direction with a non-magnetic metal member in between. A linear pulse smoke mover characterized in that a positioning jig is applied, and then the stator, the nonmagnetic metal, and the positioning jig are magnetically annealed and heated in a vacuum to tightly fix the nonmagnetic metal member and the slider piece. manufacturing method