JPS6335163A - Phase-shifting teeth for linear motor - Google Patents

Abstract

PURPOSE:To obtain phase tooth sheets with high accuracy of small tooth width and depth, by laying several kinds of sheets with one on top of the other comprising the crest and root, and then by attaching them. CONSTITUTION:Iron sheets A-D flat on both sides and constant in thickness and length are prepared. The first half of the total length of the iron sheet A has the height h1 comprising the drest and the latter half has the height h2 taking the depth of root from the crest. The iron sheet B has the height h1 of the crest in the whole length. The iron sheet C has the height h2 taking the depth of root from the crest in its first half and the height h1 of the crest in its latter half. The iron sheet D has the height h2 taking the depth of root from the crest in its whole length. By superposing and attaching these four kinds of iron sheets A-D sheet on sheet, the phase tooth plate of a linear motor is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a phase plate (or Combson plate) used in a +7 near motor.

[Conventional technology]

Recently, small, low-speed linear motors have begun to be used in various fields as control devices that require reliability and low cost, but at present there is no other method for manufacturing the phase teeth used in these motors other than the etching method. IJ created by etching method
Near slit plates differ in areas affected by etching, such as RK and width, between slit plates 11 and 11. Usually, what is expressed in the government industry as 1p 1 degree etching is soft iron (8T
In the case of C), it takes a reconnaissance interval (
P), on the other hand (depth), there is a variation of ±0.01 to 0.05.

[Problems to be solved by the present invention]

The problem to be solved by the present invention is to provide a phase plate at the foot of a high shrine with a width and depth (near the peaks and valleys) smaller than that which cannot be achieved with conventional etching techniques. It is.

[Means to solve the problem]

Using two or four types of iron plates, the phase teeth are created by bonding with adhesive or by welding the layers, and the tooth width is determined by the thickness of the clamp at the pressed end, and the depth of the groove is also determined by etching. The problem was solved by cutting and gluing or welding to make the thickness 1ft deeper.

The phase leakage plate for a motor of the present invention will be further explained with reference to the attached drawings.

Figure 1 shows that both sides of the four structures used in the present invention are flat, thick, e.g.
, ) also indicate certain thin iron plates A, B, C and D.

The height hl (for example, 2
0hX, ), and the rear half has a height h (for example, 10%) which is calculated by subtracting the depth of the valley from the peak. The total length of B is the height of the peak (hl). The front half of C has a height h8) which is the sum of the depth of the troughs subtracted from the depth of the troughs, and the rear half has the height hl) of the crests. The total length of D is hl), which is the height calculated by subtracting the depth of the valley from the peak.

A number of sets (for example, 75 or more sets) of the four flat thin iron plates described above are stacked together in this order with their flat side surfaces touching each other to obtain a phase tooth plate for a linear motor.

Figure 3 is a perspective view for explaining the state in which the length of the first one of the multiple pairs is layered together. In the plan view of the product viewed from above, the 6-hatched portions indicate grooves, and the hunting portions indicate peaks.

It is preferable to use a commercially available epoxy resin for the contact layer, but the length of each iron plate may be used as a bath layer.

The cases in FIGS. 1, 3, and 4 correspond to the case where n=l and there is a shift toward the valley plate.

Figure 2 is an explanatory diagram of the case where only the flat 114iI surfaces of iron plates A and C are connected to each other. show.

This case corresponds to the case where n = 0 and there is a deviation of 6%.

FIG. 6 corresponds to the case where n=2 and there is a deviation of &h.

The following five examples of phase teeth for a stepping motor (pulse motor) with one person≦L line d were manufactured.

1 Pitch Plate thickness Pitch deviation (However, total length of blank (
Capital) demon, to width 20) 2 0.4% 0.1$ y43 0.4%
0.29% 4 0.2% 0.05$ y45 0.2 Oni 0.19% In all cases, it was possible to obtain a near motor ft with satisfactory fine and smooth control.

[Brief explanation of drawings]

Figure 1 shows A and B, which are used together in the present invention.
, 01D4 Perspective view showing oak iron plate: Figure 2 is AC3 used when n = 0 when superimposed in the wood fiber invention.
An f+ view showing a seed iron plate; Figure 3 is a perspective view of the length of one set of ABap4m iron plates superimposed for the case of n = l;
Figure 4 is a plan view of two sets of MU-BGD iron plates stacked together and viewed from above; Figure 5 is a plan view of two sets of AO iron plates stacked together and viewed from above for n = 0; Figure 6 is 2 is a top plan view of two sets of MBOD iron plates placed together in the case of n;2; FIG. Applicant Seido Co., Ltd. Acting Patent Attorney Yoriura Tabe 0 Yaka 1) Ruler F Yu 1 Prisoner Waren Procedural Amendment Special Rogo Office Commissioner Kuro 1) Akio Tono
vawabl* qFJ DQEJl Display of case 1927 patent application No. 723-7
No. 3 Relationship with the case of the person making the amendment Patent applicant address 45@7 Miyagi-cho, Itabashi-ku, Tokyo Name (name) Kenshodo 4 Co., Ltd. Agent address 2-8-1 Seven, Shinjuku, Shinjuku-ku, Tokyo Bill No. 303 6 Number of inventions increased by amendment
No increase 7 Subject of amendment Section 8 of the title of the invention Contents of the amendment The title of the invention is corrected to [Phase tooth for linear motor].

Claims (5)

[Claims] (1) A phase tooth plate for a linear motor that is made by processing a steel plate of a predetermined thickness, stacking several types of thin plates with peaks and valleys, and then bonding them together. (2) The following four types of iron plates are flat on both sides and have a constant thickness and length: A: The front half of the total length has a height that constitutes a crest, and the rear half has a height that constitutes a crest and a depth from the crest to the trough. B: The total length has the height of the peaks. C: The front half has the height of the peaks minus the depth of the valleys, and the rear half has the height of the peaks. D: The total length is the height minus the depth of the valley from the peak. Use (A) + (nB) + (C) + (nD) (where n is 0 or 1).
The phase tooth plate (or comb tooth plate) according to claim 1, for use in a linear motor with fine density, which is constructed by overlapping the flat side surfaces in the order of , 2 or 3) and bonding or welding them with an adhesive. (3) The phase tooth according to claim 2, in which the tooth row is shifted by 1/2 pitch when n=0. (4) The phase teeth according to claim 2, in which n=1 and the tooth rows are shifted by 1/4 pitch. (5) The phase tooth according to claim 2, in which n=2 and the tooth rows are shifted by 1/6 pitch.