JPS63248528A - Press die - Google Patents

Abstract

PURPOSE:To prevent the inclination of a laminated core caused by a plate thickness deflection of the laminated core, by providing required numbers of neighboring caulking holes and caulking projections to laminate the laminating layers rotatingly by a prescribed angle or prescribed interval. CONSTITUTION:At first, a steel strip 3 is fed intermittently in the direction A positioning a pilot hole 4, then a punching is performed for a slot hole 5 and an inner core diameter 6 of the laminated core 2. The caulking hole 7 and the caulking projection 8 are disposed by the prescribed angle theta of the prescribed interval respectively, when the outer diameter 9 of the laminated core 2 is punched, to position the caulking projection 8 to a enable inserting and press fitting the caulking projection 8 into the caulking hole 7. The die of the press die is rotated by the prescribed angle theta or the prescribed interval to laminate and to fix the laminated core 2, to constitute an iron core 1 of a rotating machine. Therefore, the inclination of the iron core 1 caused by the plate thickness deflection is prevented and the iron core 1 of the rotating machine excellent in the laminating accuracy is obtained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a press mold that is suitable for use in a method for manufacturing a rotating machine core to prevent tilting of a laminated core caused by thickness deviation of the laminated core. be.

[Conventional technology]

FIG. 4 shows a single rotating machine core constructed by laminating laminated cores having thickness deviations.

In Figure 4, (1) is the rotating machine core, (2) is the laminated core that constitutes the rotating machine core (1), and ('r) is the cumulative thickness deviation (Δt) of the product j-core (2). This is the inclination of the rotating machine core (1) caused by.

Figure 5 shows the laminated core (2) constituting the rotating machine core (1).
) is a plan view showing the punching process, and (3) is a strip steel plate.

In Fig. 5, (3) indicates the steel strip from which laminated cores (2) are punched in sequence, and (4) indicates that when the steel strip (3) is sent inward, the steel strip (3) is exactly the same as the next one with the required dimensions. 1 piece of pyro is installed in the T-piece to make the cutting process easier)
... hole, (5) is the slot/J hole, (6) is the inner diameter of the laminated core (2), (7) jet m I@cocoa-2)
, (8) is the caulking protrusion, and (9) is the outer diameter of the laminated core (2).

Next, the operation will be explained.

First, the steel strip (3) is intermittently fed in the direction of the arrow fAJ by positioning the pilot hole (4) with a pilot.
Punch out the slot hole (5) and the inner diameter (6 mm) of the laminated core.

Next, punching of the caulking hole (7) and formation of the caulking projection (8) are performed in sequence.

In addition, the caulking hole (7) is the caulking hole (7) for rotating machine iron core (1).
This caulking hole (7) is used to separate the stator cores (1) that are stacked adjacent to each other when the stator core (1) and the caulking projection (8) are press-fitted and fixed together. ) is punched out by operating a plate cam αO as shown in FIG. The punch (6) for punching out the separation caulking hole (7) in (1) is moved to the protrusion of the cutting tool where punching is possible, and punching is performed.

Further, the caulking hole (7a) is formed at the same time as the caulking protrusion (8) is formed. In the final process, the outer diameter (9) of the laminated core (2) is punched out.
The rotating machine core (1) is constructed by fitting and press-fitting the caulking projection (8) into the caulking hole (7).

[Problem that the invention seeks to solve]

The conventional rotating machine iron core (1) is constructed in an imaginary manner, so a strip steel plate (3) from which the laminated core (2) is punched is used.
If there is a deviation in plate thickness due to steel plate rolling or the like, there is a problem in that the single laminated rotary machine core is stacked at an angle as shown in FIG.

In order to solve the above-mentioned problems, this invention is made by fitting and press-fitting the caulking holes and caulking protrusions of the laminated core and laminating and fixing the core (1). The purpose of this invention is to obtain a press die that can punch out a rotating machine core without tilting due to thickness deviation of the laminated core.

[First Means to Solve the Problems] The press die according to the present invention is a method for manufacturing a rotating machine core, and includes arranging a required number of caulking holes and caulking protrusions adjacent to each other at a predetermined angle or at a predetermined interval. After the caulking protrusion of the laminated core is fitted and press-fitted into the caulking hole, the laminated core is sequentially rotated at a predetermined angle or at a predetermined interval to be laminated.

[Effect]

The rotating machine core manufactured by the press die according to the present invention has caulking holes and caulking protrusions arranged so as to be adjacent to each other, and the laminated core is sequentially rotated once the caulking protrusions are fitted and press-fitted into the caulking holes of the laminated fur. Punching is performed so that the sheets are stacked on top of each other.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing the punching process of a laminated core constituting a rotating machine core, in which (3) is a strip steel plate from which laminated cores (2) are sequentially punched, and (4) is a strip steel plate (3) that is IA
In order to ensure that this strip-shaped copper plate (3) is accurately inserted into the next punching process with the required dimensions in the J-direction Cζ, one pyro lid hole (5) is provided, and the hole (5) is a slow one. −hole, (
6) is the inner diameter of the laminated core, (7) is the caulking hole of the laminated core (2), and (8) is the caulking protrusion. (9) is the outer diameter of the laminated core (2).

Next, the operation will be explained.

First, the strip steel plate (3) is positioned in the direction of arrow rAJ using the pilot hole (4), and while being fed intermittently, the slot hole (5) and the laminated core (2) are inserted. Inner diameter (
6) Perform punching.

Next, a caulking hole (7) is punched and a caulking projection (8) is formed. In the final process, T is formed on the laminated core (2).
A caulking protrusion (8) is fitted and press-fitted into this caulking hole (7) to form a rotating machine core (1), and one caulking hole (7) and a caulking protrusion (8) are formed in the laminated core (2). As shown in FIG. (8) is in a position where it can be fitted and press-fitted, punching is performed by rotating a press die (not shown) by a predetermined angle (θ) or a predetermined interval, and the laminated core (2) is laminated and fixed. Iron core (1)
Construct. In addition, when forming the rotor core (1) by press-fitting all the caulking holes (7) and the caulking protrusions (8) and laminating and fixing them, the rotor core (1) which is laminated adjacent to each other is The laminated core (2) is the lowest end of the rotor core for separation.
Drill a stem hole (8a) at the position where the caulking protrusion (8) will be formed in one or two of the sheets. The plate cam (1) shown in FIG.
0 is activated and the punch αD, which is normally sunken, is inserted into the stem hole (8
In the above embodiment, the stator core of the rotor core is explained, but the above procedure is also applied to the rotor core. It has the same effect as the example.

In addition, when skewing the throat in the rotor core, the placement of the caulking holes and caulking protrusions should be arranged in such a way that the adjacent slots...
The crimping hole and the crimping protrusion may be arranged at an angle of 1, which is increased or decreased by the angle between the skewing directions.

〔Effect of the invention〕

As described above, according to the present invention, the caulking hole and the caulking protrusion of the laminated core are arranged at a predetermined angle or at a predetermined interval, and when punching the outer diameter of the laminated core, the die of the press mold is rotated, The rotating machine core is configured such that the caulking protrusions fit and press-fit into the caulking holes.1 This has the effect of preventing the rotating machine core from tilting due to plate thickness deviation and providing a rotating machine core with high lamination accuracy. be·

[Brief explanation of drawings]

FIG. 1 is a plan view showing the punching process of laminated fur constituting the rotary machine core according to an embodiment of the present invention, and FIG.
FIG. 8 is a plan view of a laminated core according to an embodiment of the present invention; FIG. 8 is a partial cross-sectional view showing a caulking portion according to an embodiment of the present invention; FIG. FIG. 5 is a plan view showing a conventional punching process for a laminated core, and FIG. 6 is a plan view showing a commonly used punch drive unit. In the figure, (1) is a rotating machine core, (2) is a laminated core, (7) is a caulking hole, (8) is a caulking protrusion, and (θ) is a predetermined angle. In addition, in the figures, the same reference numerals indicate the same parts, and squares indicate corresponding parts.

Claims (1)

[Claims] In a press mold for manufacturing a rotating machine core, which is constructed by providing a laminated core with caulking holes and caulking protrusions, and sequentially fitting and press-fitting the caulking protrusions into the laminated cores, the laminated cores are provided with caulking holes and caulking protrusions adjacent to each other. A process of punching and forming the required number of cores at a predetermined angle or at a predetermined interval, and sequentially inserting the laminated cores at a predetermined angle or at a predetermined interval so that the caulking protrusions of the laminated cores can be fitted and press-fitted into the caulking holes.
1. A press mold comprising a punching step in which the molds are rotated at predetermined intervals and stacked and fixed.