JPS61501380A - Method and device for cutting amorphous metals - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Method and device for cutting amorphous metals background The present invention provides a method and apparatus for cutting amorphous metal, and more specifically, a method and apparatus for cutting amorphous metal foil. Regarding.

Amorphous metals are alloys in which no normal crystalline structure exists.

A summary of amorphous metal materials and their properties was published in IEEE Spectrum Journal, 1981, 1 Donald Ruskin and Lance A. Davis' article “Metallic Glasses: ・Magnetic Alterative''. simple Simply put, to form an amorphous metal, it takes a long time to form the normal crystalline structure of the metal. Cooling the molten alloy at extremely fast rates (typically in excess of 1 million degrees per second) do. Instead of forming a crystalline structure, metals form a state in which the disorder of the molten state is preserved. Freeze in stable condition.

Amorphous metals have a number of differences in their properties from the ordinary crystalline state of the same alloy. This makes it particularly suitable for the following applications. Amorphous metals are in a crystalline state harder, more abrasive, and more susceptible to mechanical stress than , has greater mechanical strength, flexibility and electrical resistivity, and is made of amorphous metal. The alloy has the softest magnetic properties of any material known to date. There is. The properties mentioned below are particularly desirable as a magnetic core material. This magnetizes magnetic materials and ease of demagnetization, as commonly occurs as core material in alternating current machines. The heat that occurs when a magnetic material is repeatedly magnetized, first in one direction and then in the opposite direction. This is because steresis loss is controlled.

For example, the primary winding of an AC distribution transformer is permanently connected to the AC line. this Therefore, the primary winding continuously circulates the transformer core between two extremes of magnetic strength. . Hysteresis is caused by the transformer core repeatedly going back and forth through a hysteresis loop. Although sys loss occurs, this must be compensated for by the 31st power. This kind of person Steresis losses represent load-independent overhead costs when operating a transformer.

Hysteria in the transformer core can occur even during periods when the load on the secondary side is light or zero. Power must be supplied to the primary side to compensate for sys losses. In the transformer core If the commonly used magnetic steel is replaced with a suitable amorphous metal, this hysteresis can be Indirect costs can be reduced by 1/4 or more.

Amorphous metals also have properties that have previously hindered their use. those mentioned above One problem that arises with amorphous metals made by Because it is necessary to increase the cooling rate during This is something you have to comb. A thickness of approximately 0.0761 is the maximum that can be made. and a more typical value is about 0.025 to about 0.0511. Usual The laminates of the transformer core are approximately 10 times thicker. For this reason, conventional laminated steel plates require It takes roughly 10 times as much amorphous material to form a transformer core with the same cross-section as A metal layer is required.

Space factor is important for many magnetic cores. The space factor is calculated based on the actual volume of the core material and the space occupied by the core. defined as the ratio of the physical volume of the The layers that make up the core fit tightly together. separated by air or other non-magnetic material). , the physical volume occupied by the core increases without a corresponding increase in magnetic properties. make it big The presence of bulges or irregularities on the edges or surfaces of the core laminates will cause the laminates to become tight. Therefore, the space factor deteriorates. required by the method of making amorphous metals. The essential thinness further exacerbates this problem. For example, the edges of ordinary iron core laminates In some cases, negligible edges and/or surface irregularities are or more layers are used, this may lead to a significant deterioration in the space factor.

Amorphous materials are very hard and abrasive, so molded strips can be used to form cores. It is extremely difficult to cut to the size and shape required to make it. Ordinary cutting method can be cut using, for example, a rotary shearing machine, an iron cutter, and a clamping cutter. However, all of these tools rely on sharp cutting edges to make clean cuts. Koui The sharp cutting edge required for the machine is made of a hard material such as suitable tungsten carbide. Even if they are made of materials, they deteriorate quickly due to the hard and abrasive material being cut. . Wheel-type tearing devices also have problems due to the thinness of the amorphous metal strips. That is, non- If the thickness of the strip of crystalline metal is, for example, about 0.0385 m, the cutting wheel will The gap must be set to about 0.0051 mm or less. Like this Tolerances require the best (and most expensive) tolerances achievable. Even if such tolerances are achieved, the cutting will be done at the temperature υ1@ must be carried out under certain conditions. When the cutting edge becomes fatigued, scratches or burrs may occur. Initially, it prevents successive layers of the core from coming together in full contact with each other, resulting in Occupancy rate deteriorates.

U.S. Pat. No. 4,328,411 and U.S. Pat. No. 4,356. The l2Fi wire is in the brittle crystalline state of the alloy, after which it is cut away to remove the remaining strip. The amorphous strips are evaporated so that it is easy to separate the desired shape from the cut out completely or heat the strip to a temperature above its crystallization temperature. By? J! Describes laser and/or electron beam cutting methods for forming rough shapes has been done. This method avoids deterioration of edge quality due to fatigued cutting tool edges. However, the space factor will still be low due to the raised edges. Furthermore, like this The heating that occurs along the cutting line leaves behind a crystallized alloy; , the magnetic properties of the area where amorphous material is intended to be used are degraded.

Objectives and summary The object of the invention is to provide a method and apparatus for cutting strips of brittle and very hard amorphous alloys. As a result, a clean, smooth edge can be obtained without forming any crystallized alloy on the edge. An object of the present invention is to provide a method and apparatus for

Another object of the invention is to provide a method and apparatus for cutting strips of amorphous metal. To provide a method and apparatus that utilizes the properties of amorphous metal itself to create eyes. .

Another object of the invention is to provide a method and method for cutting strips of amorphous metal of unlimited length. The purpose is to provide equipment.

Another object of the invention is to cut the strip along the cutting line defined by the scribe line. It is an object of the present invention to provide a method and apparatus for cutting a strip of crystalline metal into two strips.

Another object of the present invention is to provide a means for providing information along lines of indefinite length without the need for special environmental constraints. Therefore, it is an object of the present invention to provide a method and apparatus for cutting a strip of amorphous metal into two strips. Ru.

In an embodiment of the invention, a method of cutting a strip of amorphous metal includes a line on a first side of the strip. Mark the strip and fold both sides of the strip toward each other along Ha, and then Form a bending strip such that the above-mentioned - line comes within and limit the apex of the bending part, and then by creasing the bend and at least partially flattening the folded strip; the strips separating into first and second strips on either side of said line. child An apparatus for carrying out the method is also provided.

A feature of the invention is that the method for cutting a strip of amorphous metal includes: The wheel is shaped along the cutting line on the second side of the strip. Pull the cutting edge of the scribing tool to remove the amorphous metal under the cutting edge of the wheel-shaped scribing tool. Apply a scraping force to the wheel-shaped scribing tool that is effective in compressing the lines and creating an indentation. Form a bracing line and align the parallel first and second surfaces of the first and second mandrels at a predetermined distance. Separate the first and second edges of the strips with the scribe line in between them. By folding and pulling the strip between parallel first and second surfaces, , so that a fold is formed in the strip along the scribing line, and the fold is gradually By at least partially flattening the eye, said strips lie on either side of said scribe line. lateral separation into first and second strips and progressively at least partially flattened During the step of separating the first and second strips, the first and second strips are separated. It consists of the step of causing the cut edges of the strips to separate. The equipment that performs this method is also provide.

l! Simply put, this invention involves scribing lines on the surface of a strip, and drawing lines in the direction surrounding the scribed lines. , the amorphous metal strip is folded into the first and second strips by folding the strip and folding along the scored lines. Provides a method for separating into two strips. When the flattening operation proceeds along the strip.

The strip separates into first and second strips. The first and second strips are separated once they are separated. When released, the opposing severed edges separate. until the fold is completely flat , the flattening operation can be continued, or some or all of the creases can be reversed. You can also do that. Apparatus for carrying out this method is also provided.

A feature of the invention is that a device for cutting a strip of amorphous metal applies a predetermined tension to the strip. means for transporting the strip in one direction, and a wheel having a cutting edge; and a wheel-shaped scribing tool of a type in which the cutting edge has a radius of the cutting edge. , means for bringing the cutting edge into contact with a first surface of a strip of amorphous metal; and a wheel-shaped injury. a support surface facing the cutting tool and contacting the second surface of the strip; acts to apply a predetermined scribing force to the cutting edge, and the cutting edge radius and the predetermined force are combined. and a scribe line is made on said surface as the strip is transported past it. and further downstream from the wheel-shaped scribing tool by a second predetermined distance. first and second opposing surfaces located at a location and separated by a first predetermined distance; first and second mandrels having a structure and a flattened surface downstream of the first and second mandrels; and means downstream of the flattened surface for separating the newly separated edges of the strip. and the second predetermined distance is such that the strip is disposed between the first and second facing surfaces. This is effective for making it possible to fold around the marking line, and the first scheduled is effective to crease the strip around the scribe line, and said flattened surface is the predetermined tension is placed in contact with a second surface of the strip, and the predetermined tension is applied to flatten the fold. It is effective for flattening the surface (applied to the flattening surface), and the cutting edge radius, planned scraping force, and At least some of the predetermined distance, predetermined tension and separating means of 1 are: This acts to create a slit in the strip as it leaves the flattened surface.

Another feature of the invention is that the method of making the magnetic core includes: Mark a line and fold both sides of the strip toward each other along the line. forming a folded strip with said line in the section, and fully extending said both sides adjacent said line; by forming folds in close proximity and at least partially flattening the folds; such that the strip separates into first and second strips on either side of said line; winding at least one of the strips to form a magnetic core.

Briefly, this invention uses a scribing tool as a device for cutting strips of amorphous metal. is used to place scribe lines on the surface of the strip as it is transported past the scribe tool. Provides an apparatus for forming. Bend the scribed strip towards the scribe line and fold it between the mandrels. Make a crease. Next, the fold is flattened (by applying it to a flattened surface), and at this time the strip is Separate cleanly into second strip. Separation equipment downstream of the flattened surface is newly separated. Pull apart the separated edges. Radius of scribing tool cutting edge, scribing force, strip tension and separation Describe the functional relationships between at least some of the devices and explain the effective operation of these elements. Describe an empirical method to keep it within range.

The above and other objects, features and advantages of this invention will be described below with reference to the drawings. It will become clear from where you are. Use the same reference numerals for similar parts throughout the drawings. I'm there.

Brief description of the drawing A perspective view of a strip of amorphous metal to be separated into two strips along the substantially straight line of FIG. It is.

Figure 2 is a perspective view of the amorphous strip of Figure 1 after scoring on one side. be.

FIG. 3 is a sectional view taken along the line ■--■ in FIG. 2.

FIG. 4 is a microscopic view of an amorphous alloy material.

FIG. 5 is a cross-sectional view of an amorphous strip and support surface that may be used to practice this invention. One type of scribing tool that can be used is shown below.

FIG. 6 is a perspective view of a folded and creased strip of amorphous alloy.

Figure 7 is a cross-sectional view taken along ■-■ in Figure 6, showing a pair of opposite directions for creating creases in the strips. Indicate the matching mandrel.

FIG. 8 is a perspective view showing the process of flattening and separating the parts. .

FIG. 9 is a schematic diagram of a cleaving device according to one embodiment of the present invention.

Figure 10 is an enlarged plan view of a strip of amorphous alloy passing between a pair of cylindrical mandrels. Ru.

Figure 11 is an enlargement of a strip of amorphous alloy passing between a pair of stationary semi-cylindrical mandrels. FIG.

FIG. 12 is an enlarged plan view of a strip of amorphous alloy that has been flattened and separated.

FIG. 13 is a sectional view taken along xm-xm in FIG. 12.

FIG. 14 is a sectional view taken along the line XTV-XTV in FIG. 12.

FIG. 15 is a side view of a spindle-shaped crown roller according to one embodiment of the present invention.

FIG. 16 shows a turret-type wheel-type tearer suitable for use in one embodiment of the invention. It is a side view of a tool.

FIG. 17A shows winding from a strip of amorphous metal alloy cut by the apparatus of the present invention. 1 is a cross-sectional view of one type of magnetic core that can be used.

Figure 17B shows amorphous metal cut diagonally to form the magnetic core in Figure 17A. FIG. 2 is a perspective plan view of an alloy strip;

FIG. 18A shows the results obtained using a strip of amorphous metal alloy cut by the apparatus of the present invention. 1 is a cruciform cross-sectional view of a magnetic core that can be wound; FIG.

Figure 18B shows the amorphous material cut into steps to form the cruciform core of Figure 18A. FIG. 2 is a plan view of a strip of metal alloy in a reduced perspective.

FIG. 19A shows the results obtained using a strip of amorphous metal alloy cut by the apparatus of the present invention. 1 is a round cross-sectional view of a magnetic core that can be wound; FIG.

Figure 198 is cut sinusoidally to form the magnetic core with the round cross section of Figure 19A. FIG. 2 is a plan view of a strip of an amorphous metal alloy with a reduced perspective.

Figure 20 is a cross-section of Figure 9 so that the cut shapes of Figures 17A to 198 are obtained. It is an end view of the H position which controls the lateral position of a bracing tool in the υ direction.

FIG. 21 is a schematic diagram of another device for controlling the lateral position of a scribing tool;

Detailed Description of the Preferred Embodiment A strip 10 of amorphous metal alloy is shown in FIG.

Although this invention is not intended to be limited to specific alloys, this The following explanation will be given using one alloy as an example of a material using the method of the invention. is a 2605 S-2 alloy manufactured by Allied Corporation. , approximately 78% iron, 13% boron and 9% silicon. Other suitable It is understood that it is within the scope of this invention to use the method described above for amorphous alloys. I would like to be recognized. The strips of amorphous metal alloy 10 may have any convenient length and are known in the art. It has a width that can be molded using manufacturing methods that are currently available or that will be developed in the future. stomach. The desired cutting line 12 is shown as a dashed line. If the broken line 12 is straight, it is an amorphous metal. The case shown is consistent with the length dimension of the alloy strip 10, but the cut line 12 is Qualitative curvature may be included, and the method of the present invention provides a method for forming a strip 10 of amorphous metal alloy. Regardless of the angle of the cutting line 12 with respect to the length dimension of the Ru. That is, the cutting line 12 may be oriented parallel to the length dimension as shown, or It may be normal to the length dimension, or any angle in between. That's fine.

Referring now to FIG. 2, along the line previously defined by the cutting line 12, A scribing line 14 is formed. Marking l1114 marks the first strip of amorphous metal alloy 10. and a second portion 16.18, which portions are typically at the mark line 1. At point 4, they are bent slightly closer to each other.

Referring also to the cross-sectional view in FIG. form. If the amorphous metal alloy strip 1o were an ordinary crystalline material, After forming the postcard 1114, press the strip material to both sides along the scribe line 14. of the strips by pushing them upward together to form parallel straight peaks or shoulders. Material deforms. When such a peak or shoulder exists, the space factor deteriorates. However, As shown in Figure 3, the edge of the marking line 14 only creates a ridge that hardly causes any problems. , rather substantially flat and parallel to the surfaces of portions 16 and 18.

Although the method of this invention is not intended to be bound to any particular cause, it is currently It is shown in Figure 3 that the structure of the crystalline metal alloy strip 10 is different from that of an ordinary crystalline alloy. This is thought to be the reason why the shape of 1i114 is obtained. ordinary crystalline When the alloy solidifies, the crystals thus formed have very few, if any, voids. The orientation is automatically rearranged as necessary to create a variety of nearly solid pieces of metal. . On the other hand, alloys can be made quickly without having time to rearrange them to produce dense bodies. When cooled to form strips 10 of amorphous metal alloy, the alloy looks like the one shown at 20 in FIG. Trapped in a metastable amorphous state composed of alloy particles, the percentage of volume It is composed of void spaces 22 distributed throughout the purchase of the stock.

In reality, the dimensions of the particles 20 and voids 22 are on the atomic scale, but in FIG. This is an exaggeration for convenience. Scribble? ! When forming 14, mark the blank space 22 with I! 14 It can be displaced laterally away from the object. This displacement is the scribe l111 In the area along 4, mark I! 14, opposite the side in contact with the tool forming the A crack nucleus is created on the side of the strip 10 of the crystalline metal alloy, and the void 22 is located at this scribing line 1. Displaced to the area along 4. Therefore, without displacing the material on both sides and upwards, A postcard 114 can be created. Strain cracks that become seeds along marked line 14 These lines do not propagate independently into the surrounding material, but can grow and cause injury. In order to be able to separate the material along the Must wait for stress.

Marking l1114 can be done with any convenient tool such as a pierce, the tip of a knife, etc. can be formed. The material of the amorphous metal alloy strip 10 is hard and abrasive. However, it is not necessary for the marking fa14 to penetrate through the amorphous metal alloy strip 1o; It is possible to penetrate the strip by simply contacting the surface and being pressed against it. Therefore, compared to cutting methods where the cutting tool is exposed at the cut edge of the strip, Fatigue is substantially reduced. In this invention, a glass cutlet as shown in 24 in Fig. 5 is used. A wheel-shaped cutter of a similar type is particularly effective for forming the scribe line 14. I found out something. A wheel 26 is rotatably mounted on an axis 28 between the legs of the yoke 30. Supported. A support surface 32 supports the strip 10 of amorphous metal alloy. this strip contacts the cutting edge 34 of the wheel 26 to form the scribe line 14. Beautiful greetings I! 14, the support surface 32 is preferably hard and flat without yielding. Delicious. In the preferred embodiment, support surface 32 is hard steel.

A downward force, indicated by arrow 36, causes yoke 30 to contact strip 10 of amorphous metal alloy. , forming a scribing line 14.

In this invention, a functional relationship exists between the downward force 36 and the cutting edge radius 38. It turns out that That is, as the radius 38 of the cutting edge increases due to fatigue, the cutting A satisfying scribe to generate a ripping action! ! To get 14, a bigger bottom A directional force 36 must be applied. After re-sharpening the cutting edge 34, the measurement is now possible. When the radius of the cutting edge is set to 38, which is as small as possible, a very small downward force of 36 is sufficient. This is sufficient to generate the scribe line 14 obtained. For example, tungsten carbide with a diameter of 35cm Using Ten's wheel 26, a strip of amorphous metal alloy with a thickness of approximately 0°025111 10, use the newly resharpened cutting edge 34 to make a satisfactory scribe l1114. A downward force 36 of approximately 9 Newtons is effective. The required downward force is 36 The value increases as the cutting edge radius 38 increases and the downward force 36 of approximately 110 Newtons increases. increases up to the value. At this time, the radius 38 of the cutting edge is a value slightly smaller than approximately 0.03811. It has deteriorated. The acceptable range of the value of downward force 36 is It may be from about 50 to about 100 Newtons for the scribing to be obtained. blade If the previous radius 38 exceeds the value of approximately 0.038 mm and becomes worse, the downward Regardless of the value of the force 36, a satisfactory scribe line 14 cannot be created. of the cutting edge When radius 38 becomes fatigued beyond this value, resharpening or replacement is required. that There is a limit on the radius 38 of the cutting edge beyond which a satisfactory scribing line 14 cannot be created. It is noted that the threshold value is equal to approximately 1.5 times the thickness of the amorphous metal alloy strip 10. sea bream. This covers a reasonable range of thicknesses for the amorphous metal alloy strip 10 and Satisfaction of the relationship between the limit value of the radius 38 and the thickness of the strip 10 of amorphous metal alloy This can be said to be a possible approximation.

Next, let me explain about Figure 6. Illustrated J! 14 is formed , using any convenient means, cut the portions 16 and 16 with the scribe line 14 on the inside Fold portion 18 closer together. The marking line 14 constitutes the bending part, and therefore , the amorphous metal alloy strip 10 has a tendency to bend precisely along the score lines.

In this invention, at this stage, the strip 10 of the amorphous metal alloy is If you try to bend it, it may not be satisfactory because the bent part does not follow the marking line 14. It turned out that this was not the case. After this, portions 16 and 18 are marked with at least In the vicinity of l14, the A strip of crystalline metal alloy 10 is creased along the bend.

This folding and creasing involves folding one side against the other in one movement. by ordinary bending brakes, or by a pair of spaced apart stationary or rotating brakes. This can be done by drawing a strip 10 of amorphous metal alloy between the mandrels. come. Although the method described below is actually the preferred method of this invention, this method A strip of amorphous metal alloy 10 passes from a wheel-shaped scribing tool 24 to the mandrel. Sometimes, folding and creasing is performed on one of the strips 10 of the amorphous metal alloy. point, and is done when this point passes through the mandrel. Next, referring also to Figure 7, 1 A pair of mandrels 40, 42 are spaced apart and a strip of amorphous metal alloy 10 is drawn between them. When scored, section 16.18 of amorphous metal alloy strip 10 is aligned along score line 14. It has been shown that they can be moved closer together. In the most preferred embodiment, the mandrel 40 ．． 42 is a pair of rotatable rows facing each other. Fold by hand using only your fingers. It is also possible to perform bending operations satisfactorily.

In this invention, in order to successfully carry out this method, portions 16 and 18 are mutually exclusive. It has been found that it is not necessary to move until surface-to-surface contact occurs. In fact, amorphous metal alloys When the gold strip 10 passes between the mandrels 40.42, between the portions 16 and 18 Allowing face-to-face contact to occur in the area will cause the binding to occur, which will cause portions 16 and 18 to Prevents self-adjustment of movement direction. This is defined by scribe line 14. There may be a tendency to force creases away from the cut line. For this reason, the department The spacing between the mandrels is such that a space 44 may exist between the opposing surfaces of the portions 16 and 18. It is preferable to set it between 40 and 42. The optimal value of empty 1i544 is Although it may vary for different thicknesses of gold and amorphous metal alloy strips 1o, For an alloy with a thickness of approximately 0.03811, the present invention provides a The spacing is approximately three times the thickness of the amorphous metal alloy strip 10, i.e. approximately 0.075 mm. I found that I was satisfied. As a result, the space 44 becomes a strip of amorphous metal alloy. It can have a value approximately equal to the thickness of the piece 10.

Referring now to FIG. 8, a strip of amorphous metal alloy 10 is folded as described above. After bending, the fold is at least partially flattened. Part 16 and part 18 are folds , the amorphous metal alloy strip 1o neatly follows the marking line 14. Separation yields two separate strips. This flattening can be done in any convenient way. However, in a preferred embodiment, a strip 1o of amorphous metal alloy is formed as shown in the figure. Flatten one end and then gradually flatten towards the other end.

The degree of flattening required varies with the sharpness of the radius 38 of the cutting edge. newly resharpened Using cutting edge 34, portions 16 and 18 are fully flattened before the fold is completely flat. To separate. The duller the cutting edge 34, the more flattening is required before separation occurs. It becomes important. To extend the life of the wheel 26, make sure that the folds are only completely flat. It may be desirable to reverse the fold at least halfway. Fold it backwards like this. Returning, for example, parts 16 and 18 to 1. Approach it with the marking line 14 on the outside. so that this marking line defines the vertex of the opposite bend. extreme case , portions 16 and 18 are passed between another pair of mandrels (not shown) and these The mandrel extends the previously outer surface of portions 16 and 18 at least near the scratch line 14. The sides are moved closer together to complete the flip.

The gradual flattening shown in Figure 8 is commonly used to separate a sheet of paper into two sheets. Please note that the process of creasing and tearing is not the same as the answer. Fold like this When trying to cut a strip 10 of an amorphous metal alloy along the line 14 of the eye, , rather than the clean, flat edges obtained by the method of this invention, the edges are uneven. In some cases, even serrated edges are formed.

Mechanical interlocking of edges 46, 48 is avoided when parts 16 and 18 are separated from each other. Preferably, the separated edges 46,48 are spaced apart from each other so that the edges 46,48 are separated from each other. Make a notch, When folding, creasing, flattening and separating are performed as described above , the edges 46, 48 are clean and the space factor of the core wrapped with the strips thus separated is There are no burrs, bulges or other cutting artifacts that would be detrimental to the .

The flattening and separation described above can be performed manually. by one hand In this separation method, portions 16 and 18 are separated laterally from one end, approximately as shown in FIG. then pull it apart and gradually advance it to the other end. For example, in the lateral direction of a 1° strip of amorphous metal alloy When the length to be cut is relatively short, such as when cutting into section 16. It has been found that it is only necessary to pull the outer edges of 18 evenly outward. pulling force When the size of the bending section is different enough to make the bent part sufficiently flat, both sections almost simultaneously Separates along its entire length, almost explosively. obtained by this method When inspecting the freshly separated edges, the same results as achieved by other flattening methods It was found that edge cleanliness was achieved.

1 suitable for marking, folding, folding, flattening and separating One device is shown in FIG. The spool 50 takes up an amorphous metal alloy 54. 52, from which the alloy is dispensed under the control of conventional feeders.

This feeding device includes, for example, first and second idler rollers for forming a supply loop 6o. 56.58. Conventional sensing and control equipment (not shown) is used to control the length of the supply loop 60 and to control the amorphous metal alloy for subsequent operations. 54 reliable sources can be guaranteed.

For example, it may be a pair of braking rollers 62, 64, between which the braking device passes. A predetermined braking force is applied to the amorphous metal alloy 54. The brake rollers 62 and 64 are It may be of any conventional type, such as magnetic particle brakes. wheel-shaped scriber The tool 24 is placed at the first (!l) of the amorphous metal alloy 54. A support roll 66 is arranged on the opposite side of 4. The wheel-shaped scribing tool 24 In FIG. 9, a scoring line 14 is made on the upper surface of the amorphous metal alloy 54.

Any convenient means may be used to generate the downward force 36 (see Figure 5). However, in the embodiment shown in FIG. A replaceable weight 68 is used. The radius of the cutting edge of the wheel 26 becomes large while it is being used. As the weight increases, as mentioned above, the mass of the replaceable weight 68 is increased to achieve a satisfactory level. The radius of the cutting edge increases to the point where it is no longer possible to make 1il14 When the wheel-shaped scribing tool 24 was used, the wheel had just been resharpened. It must be replaced with the shape marking tool 24.

At this time, the mass of the replaceable weight 68 is appropriately reduced and another series of uses is started. .

Those skilled in the art will be able to maintain a desired amount of downward force 36 on the wheeled scribing tool 24. It will be understood that other suitable devices may be satisfactorily used for this purpose; It will be understood that this does not depart from the scope of the invention. For example, instead of the replaceable weight 68 The downward force 36 can be generated using elastic means such as a spring (not shown). I can do that. In this invention, the radius of the cutting edge of the wheel-shaped scribing tool 24 is reduced due to fatigue. It has been found that as the width of the scribe line 14 increases, the width of the scribe line 14 also increases. this Therefore, the width of the scribe line 14 can be used as an indication of the required value of the downward force 36. I can do it.

Kegaki I! Feedback υJI dynamically adjusts the value of the downward force 36 according to the width of 14 By using the II unit N (not shown), the downward force 36 is further transferred to F[ Furthermore, control can be achieved with even better response. In such a return υ1 garden device, For example, using a conventional device such as a photo-optical sensor, the marking line 14 can be The width of the can be measured. Use this width to create lookup tables, for example. to obtain the required value of the downward force 36, for example using an ordinary mechanical or A downward force of this value is applied to the wheel scribe tool 24 using a hydraulic force actuator. Apply force 36. In this invention, the width of the marking line 14 is measured and this measured value is used. It forms part of this invention to set a corresponding value of the downward force 36. However, the width of the scribe line 14 is measured, and this width is adjusted to the downward direction of the force 36. The equipment required for conversion to the corresponding town is well known and therefore specifically shown on the drawings. No, and no explanation.

After passing through the wheel-shaped scribing tool 24, the amorphous metal alloy 54 is attached to the mandrel 40.42. as it approaches A crease is formed along the line. Flow between wheel-shaped scribing tool 24 and mandrel 40.42 The gap 72 along the wheel 26 of the wheel scribe tool 24 is The edge of the amorphous metal alloy 54 can be curved upward without lifting the edge at any time. It's enough to make it look like this. There is no contact between the wheel-shaped scribing tool 24 and the mandrel 40.42. If the crystalline metal alloy 54 is unconstrained, the required value of the separation 72 is 54 width. The minimum value of the gap 72 is about 2 widths of the amorphous metal alloy 54. It is 3 times as much. The maximum value is determined by the dimensions of the equipment performing the cutting operation. . In practice, the amorphous metal alloy mandrels 4o, 42 are shown as a pair of spaced apart rollers. has been done. In this invention, since the axles 40, 42 are relatively widely spaced apart, i.e. The contact force between the material thickness 2 of the amorphous metal alloy 54 whose spacing is very light, and the roller Even if a roller is used, the amorphous metal alloy 54 passes between them, causing the roller to rotate. It turns out there is little, if any, to do. Next, we will explain about Figure 10. Then, the mandrels 40 and 42 of the actual dust example of this invention shown in FIG. 9 are shown. mandrel Since the contact force of 40.42 and therefore its fatigue is very light, the freely rotatable mandrel 40, 42 may not be advantageous due to its cost and lJ complexity.

To explain FIG. 11, along the markings l1i14 on the amorphous metal alloy 54, A fixed, non-rotating type of axle 40', 42' useful for creating the fold is shown. ing.

Referring again to FIG. 9, after the crease is made on the mandrel 40.42, the amorphous The metal alloy 54 passes through the downstream gap 74 and then over the flattening roller 76. Ru. The contact angle between the amorphous metal alloy 54 and the flattening row 576 and the amorphous metal alloy 54 With the appropriate combination of tension, the amorphous metal alloy 54 will be able to hold the amorphous metal alloy 54 until it is just the flattening roller. When in contact with la 76, it flattens laterally. Before contacting the flattening roller 76, At the contact gate or subsequent point, the amorphous metal alloy 54 splits and the first and a second partial strip 78,80. Partial strip 78.80 is pyramid It passes through both sides of the apex 81 of the rod-shaped prism 82. This prism is a partial strip 78.8o and separate the just separated edges so that the just separated edges are mechanically Avoid getting caught. The pyramidal prism 82 In addition to preventing undesirable mechanical interlock, the amorphous alloy strips 54 are 576, the folded portion is at least partially folded back. fold Partial everting occurs due to conditions, particularly the sharpness of the cutting wheel 26 and the downward force 36. A combination of values may help achieve separation.

A drive roller 84 and a pinch roller 86 on each side of the partial strip 78.8o , by pulling the amorphous metal alloy 54 through the tearing device in the manner described above. collaborate with

A tension drive motor 88 applies torque to the drive roller 84, which causes the amorphous metal alloy 5 to 4 to apply a predetermined tension. Drive roller 84 and pinch roller 86 After being pulled through the tearing device under tension by the partial strip 78. 80 is fed to a conventional take-up reel (not shown).

The elements constituting this invention are illustrated in FIG. The diagram is significantly simplified to make it easier to understand. For those skilled in the art, in the actual machine , it will be appreciated that other conventional components may be desirable. For example, amorphous metal alloy Ordinary equipment to measure tension of 54! (not shown), amorphous metal alloy In order to maintain the tension of 54 at the predetermined value, the tension drive motor 88 is dynamically adjusted by υ1 m. is preferred. Alternatively, the tension drive motor 88 can be controlled manually, as will be explained later. generating tension in the amorphous metal alloy 54 that satisfies empirical parameters; I can do it.

The location and shape of the pyramidal prism 82 is such that the amorphous metal alloy 54 is approximately flattened. Where there is no longer contact with the roller 76, the applied separation force is small and the quality of the edge is poor. the edges of the partial strips 78, 80 may become distorted due to separation force and bending of an amount effective to separate the partial strips 78.80 without The amorphous metal alloy 54 is set so that the amorphous metal alloy 54 is partially bent. Pyra Using a mid-shape prism 82 means that this prism has a partial strip 78.800 It has the advantage of simplicity in that it is a completely passive component placed within the passageway. . However, one skilled in the art will recognize that other positions can be used to accomplish this effect. It will be understood that FIG. 12 shows the pyramid-shaped prism 82 of FIG. An embodiment of the invention is shown replacing the first and second diagonal separating rollers 90,92. It is. The diagonal separation row 590.92 may be stationary or rotatable. If it is rotatable, it may be a passive type or a driven type.

Generated by diagonal separating rollers 90,92 (or pyramidal prisms 82) The separation force caused by the separation force and the partial folding of the bent portion are caused by the tension of the amorphous metal alloy 54 and Combined with the sharpness of the wheel 26 and the downward force thereon, a clean tear is achieved. You can get the connections you had. The point at which separation takes place is especially when the wheel 26 is resharpened. Contact with the flattening roller 76 from a point on the upstream side of the flattening roller 76 when the It may change to a point that is touching or to a point downstream of the flattening roller 76. diagonal separation It is even possible for the separation to occur downstream of the rollers 90,92.

Just before or after the amorphous metal alloy 54 first contacts the flattening roller 76. The most stable operation of the device is achieved when adjusting the parameters so that later separation occurs. It will be done.

The cross-sectional views in Figures 13 and 14 show that the tension and separation forces as parameters are correct. Empirical results of the combination are shown. The amorphous metal alloy 54 is indicated by the broken line 9 in FIG. Along the line indicated by 4, it first contacts the flattening roller 76, and remains in contact with the flattening roller 76 throughout the rotational angle of the part), and then the second The contact with the flattening roller 76 is lost due to the break 196 . Just before reaching the dashed line 94, As shown in FIG. 13, the amorphous metal alloy 54 is only partially flat. Then the 14th In the figure, just when the amorphous metal 3 containing metal 54 contacts the flattening row 576 at the dashed line 94, Flattened O - becomes substantially flat against the rough 6 and thus lies on the previously scored line 14. Straighten the folds. When using the correct values of tension and separation force, exactly Figure 14 At the point shown in Figure 1, a clean tear begins at eye 102 and remains stable in this state. - The amorphous metal alloy 54 is neatly separated into two partial strips 78.80. be done.

In the above description, the amorphous metal alloy 54 is applied to the surface of the rotatable flattening roller 76. Although the case where the flattening surface is used has been explained, the present invention can also be applied using other types of flattening surfaces. is within the range of For example, instead of the flattened O-rough 6, a fixed surface of suitable shape (as shown in the figure) can be used. ), and on the other hand, in exactly the same way as described above, we apply an amorphous metal alloy. ) can be made flat. In another embodiment of the invention, the flattening roller 76 and The action of the diagonal separation rollers 90.92 (or pyramidal prisms) Both can be accomplished by a spindle-shaped crowned roller 98 as shown.

In addition to the tension and separation force parameters mentioned in the previous paragraph, these parameters and , the sharpness of the cutting edge 34 and the value of the downward force 36 used when forming the scribing line 14 There is a degree of interaction between However, from the explanation given in the previous paragraph, it is clear to those skilled in the art that If so, equivalent experiments are not required in making and using the pre-dissection device of this invention. Probably.

FIG. 16 shows an improved wheel-shaped scribing tool 2 that can be used in this invention. 4' is shown. In order to obtain a longer elongation for tearing, the ninth The wheel-shaped scribing tool 24 in the figure is a multi-wheel-shaped scribing tool located on a turret device. 24' and if one cutting edge 34 becomes dull or damaged, the operating time of the device The new cutting edge 34 can now be pivoted into position without losing the ing.

Another possibility for increasing the running time of the cutting edge 34 is to connect the cutting edge 34 during use. Includes continuous sharpening. Install the diamond-impregnated grinding wheel (not shown) on the wheel. 26 and optionally rotated to extend the cutting travel of the cutting edge 34. As a result, the sharpness can be maintained to a satisfactory degree.

As mentioned previously, one reason for the amorphous metal alloy 54 to tear is when it is wrapped around a mandrel. , if only square or rectangular cross-sections are available, the wire wrapped around them Separate shapes that yield a cross-section that more closely conforms to the shape of the coil. It's about getting. One possibility is shown in Figures 17A and 17B, and this In the figures, the length dimensions are significantly shortened for illustrative purposes. Amorphous metal alloy 54 is 1 divided into two triangular partial strips 78.80 by two diagonal cuts 102. separated. Winding each partial strip 78,80 onto a mandrel (not shown) The core can be made with a triangular cross section, or the end can be made with a triangular cross section as shown in Figure 17A. It is possible to make an iron core 104 with a square cross section by butting the two together and winding them. iron core The laminate extends in the direction of the cross-section line.

The single diagonal cut 102 in Figure 178 allows all of the cut material to be used. There are some advantages. At present, the cost of amorphous metal alloy 54 is very high, so ordinary In some applications, the cost of iron cores whose manufacturing involves a fairly high scrap rate of materials. are not compatible. For applications where cost is not an issue, there is a significant scrap rate. 18A, 18B, 19A, and 198. The improved cross-sectional shape provided by the tear pattern can be used.

In the embodiment shown in FIGS. 18A and 188, one edge of the amorphous metal alloy 54 is along the stepped cut 102 and along the opposite edge of the second amorphous metal alloy 54'. Two strips are obtained by the corresponding stepped cuts 102', which When wrapped around the mandrel with the unfinished edges butted together, a cruciform or any other suitable shape is formed. An iron core 106 with a stepped cross section is obtained. Dissection of Figures 18A and 188 This method can produce almost any desired polygonal cross section.

To explain about FIGS. 19A and 19B, it is possible to make a substantially round iron core 108. The resulting tear pattern is shown. Cutting on both sides of amorphous metal alloy 54.54' The mouth 102.102' follows a long sinusoidal path and passes through the amorphous metal alloy 54.54'. When the uncut edges 103 are brought together and wound, the iron core 10 becomes round or oval. 8 is obtained.

The tearing patterns and resulting core shapes described above are examples; It is not intended to be exhaustive of the possibilities of this invention. This invention can be applied to virtually any desired iron core. It is flexible enough to produce finished strips that can be wrapped with cross-sectional shapes.

The length of the amorphous metal alloy 54 is measured in kilometers, and the width is at most a few C. 1, so the lateral position of the cut 102 must be determined in order to create the desired cross section of the iron core! I.J. 　WJ is not a task that can be taken lightly. Next, Fig. 20 will be explained. It is used to plot the movement of the wheel-shaped scribing tool 24# from one side to the other side. An example device is shown that can also be used. Mark the lead screw 110 into a wheel shape Screw onto the main body 112 of tool 24#. Connect the lead screw 110 to the marking drive motor 114. Therefore, rotate it. This motor responds to the υ1tM] signal from the m control device 116. drive the wheel 26 laterally across the amorphous metal alloy 54, thus creating a corresponding shape. Create the desired shape of the scribe line 14 so that a 1°2 cut is obtained. Sensing wheel 11 8 is in contact with the peripheral surface of the support roll 66 as shown in the figure, or the amorphous metal alloy 54 in response to the passage of the amorphous metal alloy 54 through the device. generates a length signal. This length signal is applied to the control device N116, where it is scribed. It is converted into a command to be applied to the drive motor 114. In the simplest case, tiIIw The J-equipment M116 detects when the amorphous metal alloy 54 of the predetermined quality has passed. It can be a regular pulse generator that generates one pulse each time the pulse 118 is sensed. I can do that. The scribe drive motor 114 responds to each pulse from the iwJ device 116. In response, it may be a step motor that takes small rotational steps in one direction. This time The pedestrian crossing causes a small translational advance in one direction of the wheel-shaped scribing tool 24". . A simple example of this kind is to make the diagonal cuts shown in Figures 17A and 178. is satisfactory. For more complex cutting patterns, the control device 1 16 is a length and width lookup table using a microprocessor, for example. , and can supply a bidirectional drive signal to the marking drive motor 114. Ru.

configuring a lookup table and generating a bidirectional drive signal in response; Since the hardware used is well known, it will not be described in detail.

Those skilled in the art will understand that a wheel-shaped scriber is used as a device equivalent to that described above. 24'' is immovable, and a device corresponding to the 1ilJ11] device 116 is used to It will be clear that there are devices in which the crystalline metal alloy 54 is moved laterally.

The wheel-shaped scribing tool 24″ translates in the width direction of the amorphous metal alloy 54 due to non-translation. The length that the crystalline metal alloy 54 passes between stages is relatively long and gradual. to maintain the desired tracking of the cutting edge 34 along the desired cutting line 12. There are no difficulties. The lateral translation of the wheel-shaped scribing tool 24" Instead of moving the score line 14 against the edge of the gold 54, the amorphous metal alloy 54 is physically If a tendency to shift laterally occurs, the scribe line 14 will be at the desired cut! a14 To help make it possible to track the wheel-shaped scribe tool 24" Additional trailing arm leg width (not shown) can be added.

The thickness of the amorphous metal strip made by the method of this invention is variable. Like this The variable thickness is due to the large number of layers that must be made of thin materials. to an auxiliary device 116 for controlling the lateral position of the wheel-shaped scribing tool 24''; As an input to the amorphous metal alloy 54 passing through the wheel-shaped scribing tool 24, If only the length is used, considerable changes will occur in the shape and magnetic properties of the core. Become. A preferred method is shown in Figure 21, where in this case half the Instead of being wound on a take-up reel, the piece 78 is wound directly onto the mandrel 122 and cut into pieces. While performing the work, the iron core 122 is formed. Sensing device W124 is wrapped The thickness or lamination thickness of the iron core 122 is sensed and a signal representing this value is sent to the control device 116. Ru. The control wJ device 116 utilizes the current stacking thickness of the iron core 122 and, as explained to Kiku, , to set the lateral position of the wheel-shaped scriber A24'.

Sensing device 124 may be any convenient device, such as electromechanical, electromagnetic, or electro-optical. It may be a format. Specifically, the sensing device 124 may include a variable resistor 126. The resistance value is elastic so that it comes into contact with the surface of the iron core 122. is changed by an actuating arm 128 connected to an idler roller 130 that is pressed against Ru.

Leap board i! ! Judgment of crucian carp lost

Claims (1)

[Claims] 1) In a method of cutting a strip of amorphous metal, (a) a line is drawn on the first surface of the strip; (b) Fold both sides of the strip closer to each other along the line so that the front forming a folded strip in which the marking line is within the fold; (c) bringing said sides sufficiently close together near said line to form a fold; (d) said fold is at least partially flattened so that said strip is on either side of said line; A method comprising the step of causing the first and second separated strips to separate into first and second separated strips. 2) In the method as set forth in claim 1), fewer of the first and second strips A method comprising the step of winding at least one magnetic core to form a magnetic core. 3) In the method described in claim 1) or 2), at least a portion of the fold is the step of flattening the folds at least partially folding back the folds. 4) In the method described in claim 1) or 2), the marking step is (a) supporting the second side of the strip with a hard, non-yielding support surface; (b) scoring said line on said first surface without substantially removing material from said strip; Methods that include. 5) In the method described in claim 4), the scribing step includes a radius of a certain cutting edge. A method comprising scribing using a wheel-shaped scribing tool with a holder. 6) In the method described in claim 5), the radius of the cutting edge is approximately 0.038 mm. Methods that include keeping it smaller. 7) In the method according to claim 6), the marking step comprises about 5 to about 11 A method comprising applying a scribing force of 0 newtons to the wheeled scribing tool. 8) In an apparatus for cutting a strip of amorphous metal, a means for transporting the strip in a certain direction is provided. and the means for transporting includes means for creating a predetermined tension in the strip, and further , a type of wheel that includes a wheel with a cutting edge, and the cutting edge has a certain cutting edge radius. an eel scribing tool and means for contacting said cutting edge with a first surface of a strip of amorphous metal; and a support opposite the wheel-shaped scribing tool and in contact with a second surface of the strip. and the contacting means acts to apply a predetermined scribing force to the cutting edge. However, the radius of the cutting edge and the predetermined force together are the same as when the strip is transported past. , acts to mark a scribing line on the surface, and further includes a first predetermined distance apart from the first predetermined distance. having first and second opposing surfaces and downstream of the wheel-shaped scribing tool; first and second axles disposed at a second predetermined distance, said second predetermined distance; The distance between the strips is such that the strips fit between the first and second opposing surfaces. It is effective to enable the folding around the marking line, and the first The predetermined distance is effective for making a crease in the strip about the scribe line. further downstream from the first and second mandrels and on a second surface of the strip. having flattened surfaces disposed in contact with each other, the predetermined tension being applied to the flattened surfaces; the first and second strips are effective to flatten the fold and are thus separated; further downstream of the flattened surface and of the first and second strips; means for pulling apart the newly separated edges, the radius of the cutting edge, the predetermined scribing force; , the first predetermined distance, the predetermined tension, and the separating means. The portion also serves to make a cut in the strip as it exits the flattening surface. device that is effective. 9) In the device according to claim 8), the means for applying a variable scribing force may include an alternating a removable weight; and a removable weight under the weight for providing at least a portion of the scribing force. means for transmitting a directional force to said wheel-shaped scribing tool; Replacing the weight with an exchangeable weight of different mass acts to change the force. device to do. 10) The apparatus according to claim 8), wherein each of the wheel-shaped scribing tools a plurality of wheels having cutting edges, and selectively attaching the cutting edge of one wheel to the strip; Apparatus containing means for applying. 11) In the apparatus according to claim 8), the scribing tool for the strip means for laterally moving one of said first and second strips; The transverse direction of the scribing tool with respect to said strip as a function of the stacking thickness of the core wound from device containing means for systematically changing the position of the 12) The device according to claim 11), wherein the means for moving in the lateral direction a lateral lead screw that engages the marking tool and a hand that systematically drives said lead screw; A device containing stages. 13) In the device according to claim 12), the lead screw is systematically driven. means for measuring the stacking thickness of the core wound from one of the first and second strips; and means for generating a control signal in response to said systematic control signal. the means for driving the control includes a scribing drive motor, the scribing drive motor driving the control; A device that drives the lead screw in response to a control signal. 14) In the device according to claim 13), the means for generating the control signal comprises: , generating a pulse in response to said strip of predetermined length passing through the scribing tool. means for causing said scriber drive motor to energize said parent mark in response to a nominal pulse. Step motors that generate the same scheduled movement increments and associated scribing tool movements. A device that is a data source. 15) In the device according to claim 8), the first scheduled distance is is more than twice the thickness of the first and second mandrels, so that the strip is While being inserted, the opposite surfaces of the strips do not engage each other and are kept at the first predetermined distance. When flattened by the flattening surface, the strip is connected to the first and second strips. A device small enough to form a fold that is effective for separating. 16) In the device according to claim 8), the separating means a prism whose apex is located between the newly separated edges downstream of the means for equipment containing. 17) In the device according to claim 16), the separating means comprises the first and second separating means. An apparatus including diagonal first and second separation rollers in contact with a second strip. 18) In the device according to claim 8), the flattening surface is a rotatable flat surface. a peripheral surface of the flattening roller, the strip extending over a substantial angular portion of the peripheral surface; contacts the circumferential surface, and the tension is applied to the circumferential surface and is effective for flattening the surface. A certain device. 19) In the device according to claim 8), the means for generating a predetermined tension is opposing drives disposed on both sides of the first and second strips downstream of the flattened surface; An apparatus including a drive roller and a pinch roller and means for driving the drive roller. Place. General Electric Company Agent (7630) Iku Numa 2