JP6374699B2 - Thickening equipment for disk-shaped material - Google Patents

Description

  The present invention relates to a disk-shaped material thickening apparatus for performing a thickening process by relatively pressing a forming roller on the outer periphery of a disk-shaped material.

  2. Description of the Related Art Conventionally, in a drive plate of an automobile, a thickening process is performed on a peripheral portion of a disk-shaped material, and a gear is formed on the increased thickness portion. In addition, during the above-described thickening process, a molding roller having a molding groove is relatively pressed against the peripheral edge of the disk-shaped material, and the peripheral edge of the disk-shaped material is plastically deformed to the shape of the molding groove. It is known to use a thickening apparatus for making meat. In such a case, if the thickness is increased at once with one molding roller, distortion and wrinkles are likely to occur in the disk-shaped material. In view of this, for example, as disclosed in Patent Document 1, a technique for gradually increasing the thickness using a plurality of types of forming rollers having different forming groove dimensions has been proposed.

  Specifically, in Patent Document 1, a disk-shaped material is held on a mandrel (holding jig), and first to third thickening rollers (first to third forming rollers) are arranged on the outer peripheral side of the mandrel. The disk-shaped material is rotated and the first to third thickening rollers are sequentially pressed against the peripheral edge of the disk-shaped raw material to increase the thickness of the peripheral edge of the disk-shaped material.

JP 2009-241130 A (particularly paragraph 0029, page 7, FIG. 3)

  In the thing of patent document 1, when making it thicken with the 1st-3rd thickening roller, since a common mandrel is used, if it makes it thicken greatly for every thickening roller, buckling and distortion will occur in a disk-shaped material. May occur. Therefore, the size to increase the thickness at a time for each thickening roller is limited. Furthermore, the number of thickening rollers provided on the outer peripheral side of the mandrel is limited.

  The present invention has been made in view of such points, and the object of the present invention is to prevent the disk-shaped material from being buckled or distorted when the peripheral edge of the disk-shaped material is increased in thickness. The reason is that it can increase the thickness.

  In order to achieve the above object, according to the present invention, a disk-shaped material thickening apparatus is constituted by a plurality of processing stations having holding jigs having different outer diameters, and the disk-shaped material is placed in each processing station. Progressive feed to increase the thickness.

Specifically, in the first invention, a holding jig that sandwiches a disk-shaped material from both sides in the thickness direction and rotates around the center of the disk-shaped material, and a peripheral portion of the disk-shaped material are inserted. A molding roller having a molding groove for increasing the thickness of the disk, and while rotating the disk-shaped material, the peripheral edge of the disk-shaped material is relatively moved between the holding jig and the molding roller. It is premised on an apparatus for increasing the thickness of a disk-shaped material that is plastically deformed so as to have a shape corresponding to the molding groove by pressing in the radial direction of the disk-shaped material. And the said thickening processing apparatus is provided with the said holding jig and the said forming roller, respectively, and is equipped with two or more processing stations for feeding the said disk-shaped raw material forward and increasing the peripheral part in steps. The outer diameter of the holding jig provided at the last processing station is smaller than the outer diameter of the holding jig provided at the first processing station. The molding roller includes a molding roller that presses a peripheral edge of the disk-shaped material in a radial direction of the disk-shaped material to increase the thickness of the peripheral edge of the disk-shaped material. By holding the disc-shaped material with the small holding jig, the thickening at the first processing station is performed with the radially inner portion exposed from the thickened portion at the first processing station. The done Meat portion, characterized in Rukoto with another of said forming roller to thickened portions that issued said exposure by pressing in the radial direction of the disk-shaped material.
Further, as the second invention, in the first invention, the last processing station is increased in thickness by the first processing station by holding the disk-shaped material with the holding jig having a small outer diameter. You may make it provide the said other shaping | molding roller which increases the thickness of this exposed part in steps in the state which the part inside radial direction is exposed rather than the thickened part. According to this configuration, it is possible to smoothly increase the thickness on the radially inner side of the increased thickness portion increased at the first processing station.
Further, as a third invention, in the second invention, the exposed portion is increased in thickness, and further, the increased thickness portion increased in the first processing station and the increased thickness in the last processing station. A plurality of other forming rollers may be provided so as to integrally increase the thickness of the thickened portion. According to this configuration, since different molding rollers can be used for each stage in the last processing station, the radially inner portion can be increased more smoothly than the increased thickness portion increased in the first processing station. be able to.

According to a fourth invention, in any one of the first to third inventions, the outer diameter of the holding jig provided in each processing station is in the order of the processing stations in which the disk-shaped material is sequentially fed. It is characterized by becoming smaller.

According to a fifth invention, in any one of the first to fourth inventions, the above-mentioned processing station is provided with two of the above-mentioned two opposite sides of the forward feed path on both sides of the forward feed path of the disk-shaped material. A forming roller is provided.

According to a sixth aspect , in the fifth aspect, the depths of the forming grooves of the two forming rollers facing each other are different from each other.

In a seventh invention, in the fifth or sixth invention, the disk-shaped material thickening apparatus comprises a first processing station, a second processing station, and a third processing station arranged in parallel. One processing station includes a first forming roller and a second forming roller, the second processing station includes a third forming roller and a fourth forming roller, and the third processing station includes a fifth forming roller and a sixth forming roller. A molding roller is provided.

  As described above, according to the first invention, the disk-shaped material is sequentially fed to a plurality of processing stations to increase the thickness, and the holding jig is used in the last processing station rather than the first processing station. Since the outer diameter is small, the holding position with respect to the disk-shaped material can be changed in the radial direction. Therefore, it is possible to prevent buckling and distortion of the disk-shaped material during the thickening process.

According to the fourth invention, since the processing stations are arranged side by side so that the outer diameter of the holding jig gradually decreases, the thickness can be increased gradually, and the disk-shaped material buckling or Distortion can be more effectively prevented.

According to the fifth invention, since the forming rollers are provided on both sides of the progressive feed path of the disk-shaped material, the progressive feed to the processing station is smoothly performed.

According to the sixth aspect of the invention, the depth of the forming groove of the two forming rollers facing each other is different, so that the thickness increase processing width in the same processing station can be adjusted.

According to the seventh invention, the thickness increase processing is performed at three processing stations each including two forming rollers, and therefore the accuracy of the thickness increase processing can be further improved. Furthermore, since the thickness is increased by the first to sixth molding rollers, the molding burden on the individual molding rollers is reduced, and the life of the molding rollers is extended.

FIG. 1 is a schematic plan view in which a part of the thickening apparatus according to the embodiment of the present invention is omitted. FIG. 2 is a cross-sectional view showing a state of thickening processing by the thickening processing apparatus according to the embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its use.

(Embodiment 1)
Based on FIG.1 and FIG.2, the structure of the thickening processing apparatus of the disk shaped raw material which concerns on this invention is demonstrated.

  As shown in FIG. 1, the disk-shaped material thickening apparatus 1 includes a first processing station 11, a second processing station 12, and a third processing station 13 arranged in a straight line from the left side. .

  The basic configuration of the first processing station 11, the second processing station 12, and the third processing station 13 is the same, and a disk-shaped material 5 that becomes a drive plate or the like is held by the holding unit 3 so as to sandwich them. Further, the pressurizing units 2 and 2 are provided to face each other.

  Each of the pressure units 2 includes a circular forming roller 6 for press-forming the disk-shaped material 5. As shown in FIG. 2, a molding groove 6 a into which the peripheral edge 5 a of the disk-shaped material 5 is relatively inserted is formed on the outer periphery of each molding roller 6. Each of the forming rollers 6 is rotatable around the central axis P2 and is controlled by the hydraulic servo unit Y so as to gradually approach and separate from the disk-shaped material 5 in the radial direction.

  Each holding part 3 includes a disk-like holding jig 4. The holding jig 4 includes an upper mold 4a and a lower mold 4b, and a positioning pin 30 is provided at the center of the lower mold 4b. On the other hand, a positioning hole 5 b is provided at the center of the disc-shaped material 5, and the positioning hole 5 b is fitted to the positioning pin 30 and positioned coaxially with the holding jig 4. Then, the disk-shaped material 5 is held between the upper mold 4a and the lower mold 4b so as to be sandwiched from above and below (that is, both sides of the disk-shaped material 5 in the plate thickness direction). The holding jig 4 is driven to rotate about the central axis P1, and the rotation speed, the number of rotations, and the like are controlled by a hydraulic servo unit (not shown).

  As shown in FIG. 2, the holding jig 4 (upper mold 4 a and lower mold 4 b) is formed so that the outer diameter thereof is smaller than the outer diameter of the disk-shaped material 5. The peripheral edge 5 a is in a state of protruding beyond the outer periphery of the holding jig 4.

  Although details will be described later, when the disk-shaped material 5 is rotated while being held by the holding portion 3 and the disk-shaped material 5 is pressed by the forming roller 6 from the outside in the radial direction to the inside, The forming groove 6a rotates while pressing against the peripheral edge portion 5a of the disk-shaped material 5, and the peripheral edge portion 5a protruding from the holding jig 4 is plastically deformed into the shape of the forming groove 6a to increase the thickness. . The disk-shaped material 5 is sequentially fed in the order of the first processing station 11, the second processing station 12, and the third processing station, and is subjected to a thickening process.

  Hereinafter, the first to third processing stations 11 to 13 will be described.

  In FIG. 2, FIG. 2 (a) shows only the disk-shaped material 5 before processing, and FIGS. 2 (b), 2 (c) and 2 (d) show the first processing station 11 respectively. The processing states at the second processing station 12 and the third processing station 13 are shown. 2B to 2D, the right side shows a state before molding by each molding roller 6, and the left side shows a state molded by each molding roller 6. Further, as shown in FIG. 1, the forming rollers 6 are arranged to face each other at each processing station. However, in FIG. 2, the forming rollers 6 are shown at the same left side position for convenience of explanation.

  As shown in FIG. 1, the first processing station 11 includes a holding unit 3 for holding the disk-shaped material 5 and pressurizing units 2 and 2 provided to face each other with the holding unit 3 interposed therebetween. The 1st pressurizing part 21 and the 2nd pressurizing part 22 are provided. The holding unit 3 includes a first holding jig 41 as the holding jig 4. The first holding jig 41 includes a first upper mold 41a as the upper mold 4a and a first lower mold 41b as the lower mold 4b. As shown in FIGS. 1 and 2, the peripheral portion 5a of the disc-shaped material 5 that protrudes outside the outer diameter S1 of the holding jig 41 (the first upper die 41a and the first lower die 41b) is thick. Plastic deformation (thickening) is performed. The 1st pressurization part 21 is provided with the 1st forming roller 61 as the forming roller 6 which presses against the peripheral part 5a of the disk-shaped raw material 5, and is thickened. The second pressure unit 22 includes a second forming roller 62 as the forming roller 6. As shown in FIG. 2, on the outer periphery of the first molding roller 61 and the second molding roller 62, the first molding groove 61a and the molding groove 6a into which the peripheral edge portion 5a of the disk-shaped material 5 is relatively inserted. Second molding grooves 62a are respectively formed. The second molding groove 62a is slightly wider and shallower than the first molding groove 61a, and the peripheral edge portion 5a of the disc-shaped material 5 is the second molding groove 62a than the first molding groove 61a. In addition, it is becoming thicker.

  The second processing station 12 includes a holding unit 3 for holding the disc-shaped material 5 and a third pressurizing unit 23 as the pressurizing units 2 and 2 provided to face each other with the holding unit 3 interposed therebetween. And a fourth pressure unit 24. The holding unit 3 includes a second holding jig 42 as the holding jig 4. The second holding jig 42 includes a second upper mold 42a as the upper mold 4a and a second lower mold 42b as the lower mold 4b. In the second processing station 12, the peripheral edge 5a of the disk-shaped material 5 that protrudes outside the outer diameter S2 of the second holding jig 42 (second upper mold 42a and second lower mold 42) of the holding section 3 is removed. It is plastically deformed so that the meat becomes thick. At this time, the outer diameter S2 of the second holding jig 42 is smaller than the outer diameter S1 of the first holding jig 41 of the first processing station 11 (S1> S2). The portion inside the portion processed to increase the thickness at the first processing station 11 protrudes from the second holding jig 42, and this protruding portion and the portion processed to increase the thickness at the first processing station 11 together. Then, the second processing station 12 is plastically deformed so that the meat becomes thick. Therefore, the second processing station 12 is subjected to a thickening process so that the thickness is further thicker than that of the first processing station 11.

  Specifically, the third pressurizing unit 23 includes a third molding roller 63 as the molding roller 6 that presses the peripheral edge 5 a of the disk-shaped material 5 to increase the thickness. The fourth pressure unit 24 includes a fourth forming roller 64 as the forming roller 6. As shown in FIG. 2, on the outer periphery of the third molding roller 63 and the fourth molding roller 64, the third molding groove 63a and the molding groove 6a into which the peripheral edge portion 5a of the disk-shaped material 5 is relatively inserted. Fourth molding grooves 64a are respectively formed.

  The third molding groove 63a is formed in the second molding of the first processing station 11 so that the portion protruding from the second holding jig 42 on the inner side of the portion thickened in the first processing station 11 can be thickened. It is formed slightly wider than the groove 62a. The fourth molding groove 64a is formed to be slightly wider and shallower than the third molding groove 63a, and the peripheral edge portion 5a of the disk-shaped material 5 is larger than the third molding groove 63a. The thickness is further increased by the four molding grooves 64a.

  The third processing station 13 is provided with a holding unit 3 for holding the disc-shaped material 5 and a fifth pressurizing unit 25 as the pressurizing units 2 and 2 provided to face each other with the holding unit 3 interposed therebetween. And a sixth pressure unit 26. The holding unit 3 includes a third holding jig 43 as the holding jig 4. The third holding jig 43 includes a third upper mold 43a as the upper mold 4a and a third lower mold 43b as the lower mold 4b. In the third processing station 13, the peripheral edge portion 5 a of the disc-like material 5 that protrudes outside the outer diameter S <b> 3 of the third holding jig 43 is plastically deformed so that the thickness is thick. At this time, the outer diameter S3 of the third holding jig 43 is smaller than the outer diameter S2 of the second holding jig 42 of the second processing station 12 (S2> S3). The portion inside the portion processed to increase the thickness at the second processing station 12 protrudes from the third holding jig 43. The protruding portion and the portion processed to increase the thickness at the second processing station 12 together. Then, the third processing station 13 is plastically deformed so that the meat becomes thick. Therefore, at the third processing station 13, the thickness is increased so that the thickness becomes thicker than that of the second processing station 12.

  Specifically, the fifth pressure unit 25 includes a fifth molding roller 65 as the molding roller 6 that presses the peripheral edge 5a of the disk-shaped material 5 to increase the thickness. The sixth pressure unit 26 includes a sixth forming roller 66 as the forming roller 6. As shown in FIG. 2, on the outer periphery of the fifth molding roller 65 and the sixth molding roller 66, as the molding groove 6a into which the peripheral portion 5a of the disk-shaped material 5 is relatively inserted, the fifth molding groove 65a and Sixth molding grooves 66a are respectively formed.

  The fifth forming groove 65a is formed by the fourth forming of the second processing station 12 so that the portion protruding from the third holding jig 42 inside the portion increased in thickness by the second processing station 12 can also be processed to increase the thickness. It is formed slightly wider than the groove 64a. The sixth molding groove 66a is formed so as to be slightly wider and shallower than the fifth molding groove 65a, and the peripheral portion 5a of the disk-shaped material 5 is sixth molding than the fifth molding groove 65a. The thickness is further increased by the groove 66a.

  Next, the processing steps by the thickening apparatus 1 will be described with reference to FIGS.

  First, the unprocessed disk-shaped material 5 shown in FIG. 2A is put into the first processing station 11.

  And the disk-shaped raw material 5 pinched | interposed into the 1st holding jig 41 (holding part 3) of the 1st processing station 11 is rotated around the central axis P1, and the first pressurizing part 21 (pressurizing part 2) is rotated. The first forming roller 61 (forming roller 6) is brought close to the disc-shaped material 5. Then, the peripheral portion 5a of the disk-shaped material 5, that is, the portion protruding from the outer periphery of the first holding jig 41 (the first upper die 41a and the first lower die 41b) is the first forming groove of the first forming roller 61. It enters 61a (the forming groove 6a). When the first molding roller 61 is further pressed against the disk-shaped material 5, the first molding roller 61 rotates around the central axis P <b> 2 while pressing the disk-shaped material 5. And the peripheral part 5a of the disk-shaped raw material 5 plastically deforms along the shape of the 1st shaping | molding groove 61a, and the peripheral part 5a is thickened in the 1st shaping | molding groove 61a.

  Thereafter, the first molding roller 61 is separated from the disk-shaped material 5, and then the second molding roller 62 of the second pressure unit 22 is brought close to and pressed against the disk-shaped material 5. Since the second molding groove 62a is wider and shallower than the first molding groove 61a, the peripheral edge 5a of the disk-shaped material 5 further increases along the shape of the second molding groove 62a. Meated.

  As shown in FIG. 2B, the disk-shaped material 5 that has been thickened at the first processing station 11 is sequentially fed to the second processing station 12. At the same time, another unprocessed disc-shaped material 5 shown in FIG. 2A is put into the holding unit 3 of the first processing station 11. At this time, each pressurizing unit 2 of the first processing station 11 and the second processing station 12 is provided on both sides of the holding unit 3, that is, on both sides of the forward feed path, so that the forward feed path is not hindered, It is possible to proceed to the next process smoothly.

  The disc-shaped material 5 put into the second processing station 12 is sandwiched between second holding jigs 42 (second upper mold 42a and second lower mold 42b). At this time, since the outer diameter of the second holding jig 42 is smaller than that of the first holding jig 41 (S1> S2), the radial pressing position with respect to the disk-shaped material 5 is relatively inward. . Then, similarly to the processing method at the first processing station 11, as shown in FIG. 2C, the third forming roller 63 and the fourth forming roller 64 further increase the thickness.

  At this time, since the outer diameter S1 of the first holding jig is larger than the outer diameter S2 of the second holding jig, the volume that can be increased in the thickness of the second processing station 12 is larger than that of the first processing station 11, and more The thickness can be increased, and the holding position (pressing position) with respect to the disk-shaped material 5 is gradually shifted radially inward, so that the disk-shaped material 5 is not easily buckled or distorted.

  Then, the disk-shaped material 5 subjected to the thickening process at the second processing station 12 is sequentially fed to the third processing station 13, and the disk-shaped material 5 subjected to the thickness increasing process at the first processing station 11 is subjected to the second processing. An unprocessed disc-shaped material 5 is input to the station 12 and the first processing station 11 is input. That is, the three disk-shaped materials 5, 5, and 5 are each subjected to a thickening process. Also in the 3rd processing station 13, since the pressurization parts 2 and 2 are provided in the both sides of the progressive path | route, it forwards smoothly.

  The disc-shaped material 5 put into the third processing station 13 is sandwiched between the third holding jigs 43 (the third upper mold 43a and the third lower mold 43b). At this time, since the third holding jig 43 has an outer diameter smaller than that of the second holding jig 42 (S2> S3), the radial pressing position with respect to the disk-shaped material 5 is further inside. Then, similarly to the processing method in the first processing station 11 and the second processing station 12, as shown in FIG. 2D, the fifth forming roller 65 and the sixth forming roller 66 perform further thickening processing. . In the processing by the sixth forming roller 66, the thickened portion is formed so as to have a substantially rectangular cross section.

  Thus, in order to increase the thickness by pressing the peripheral portion 5a of the disk-shaped material 5 protruding from the outer periphery of the holding jig 4 from the radially outer side to the inner side, as shown by a two-dot chain line K in FIG. If the outer diameter of the holding jig 4 is constant, the protruding dimension of the disk-shaped material 5 (the dimension of the portion protruding from the holding jig 4) becomes relatively long in the first thickening process, and buckling or distortion occurs. Is likely to occur. However, according to the thickening processing apparatus 1 according to the present invention, since the holding jig 4 is divided into three processing stations 11 to 13 and the outer diameter is different for each processing station, the thickening processing state can be achieved. Accordingly, the protruding dimension of the disk-shaped material 5 can be adjusted for each processing station.

  Specifically, as shown in FIG. 2, the outer diameter of the holding jig 4 is gradually reduced in order of S1> S2> S3 over the first to third processing stations 11 to 13. The pressing position in the radial direction of the disk-shaped material 5 can be shifted inward in a stepwise manner. In this way, by increasing the outer diameter of the holding jig 4 step by step, the increaseable volume of the disk-shaped material 5 can be increased step by step, and the thickening process is increased to a thick wall at a time. Therefore, buckling and distortion are less likely to occur in the disk-shaped material 5. As a result, it is possible to increase the thickness neatly without buckling the disk-shaped material even in the process of increasing the thickness of a thin disk-shaped material which is easily buckled or the thickness of a thick gear part.

  In the present invention, the disk-shaped material 5 is sequentially fed to the three processing stations 11 to 13, and predetermined processing is always performed on each of the three disk-shaped materials 5 at each processing station. In each processing station, the thickness is increased successively by two forming rollers 6 and 6. Accordingly, if the thickness increasing time (tact time) by each forming roller 6 is t, the tact time at each processing station is 2t. That is, since the thickening process is performed in parallel at each processing station, the processed workpieces after all the thickening processes can be sequentially sent out with a tact time 2t. Therefore, when all the thickening processes are performed at one processing station provided with all the forming rollers (for example, three forming rollers) around one holding jig, the tact time is equal to the number of forming rollers. In contrast to being determined (3 t in the case of three), the present invention can shorten the tact time (2 t) and improve productivity.

(Other embodiments)
The outer diameter of the holding jig 4 is S1>S2> S3, but may be the same outer diameter (for example, S1 = S2> S3) in some processing stations.

  In each processing station, the two forming rollers 6 are provided to face each other. However, the number of forming rollers 6 is not necessarily two. In some cases, one may be provided, or conversely, three or more may be provided. .

  Moreover, you may increase the number of processing stations not only in the 1st-3rd processing station but providing a 4th processing station.

  In this embodiment, the holding jig and the forming roller are driven and controlled by the hydraulic servo unit. However, other control methods such as an electric actuator and a pneumatic actuator may be used.

  In the present embodiment, the drive plate for automobiles is taken as an example. However, the present invention is not limited to this, and other disk-shaped materials such as an outer peripheral tooth forming drum and an inertia ring may be used. Especially for products that require heat treatment after external processing, such as external gears, if the thickening is performed at a large volume at once, scratches and distortions are likely to occur during heat treatment. The invention is particularly suitable for such products.

  INDUSTRIAL APPLICABILITY The present invention is useful for a thickening apparatus that performs a thickening process on the peripheral portion of a disk-shaped material in the manufacturing process of drive plates and gear parts.

Claims (7)

A holding jig that sandwiches the disk-shaped material from both sides in the thickness direction and rotates around the center of the disk-shaped material;
A molding roller having a molding groove for thickening into which the peripheral edge of the disk-shaped material is inserted;
While rotating the disk-shaped material, the peripheral edge of the disk-shaped material is relatively pressed between the holding jig and the molding roller in the radial direction of the disk-shaped material, thereby forming the molding material. In a thickening device for a disk-shaped material that is plastically deformed to have a shape corresponding to the groove,
Each of the holding jig and the forming roller is provided, and the disk-shaped material is sequentially fed to include two or more processing stations for increasing the thickness of the peripheral portion in stages.
The outer diameter of the holding jig provided in the last processing station is smaller than the outer diameter of the holding jig provided in the first processing station ,
The first processing station includes the molding roller that presses the peripheral portion of the disc-shaped material in the radial direction of the disc-shaped material to increase the thickness of the peripheral portion of the disc-shaped material,
The last processing station is
In the state where the portion on the inner side in the radial direction is exposed from the increased thickness portion increased in thickness at the first processing station by holding the disc-shaped material with the holding jig having a small outer diameter,
Disc, wherein Rukoto with another of said forming roller to the first thickening the the thickening been bulking meat portions at the processing station has issued said exposure by pressing in the radial direction of the disk-shaped material portion Thickening equipment for shaped material. In claim 1,
The last processing station is a state in which the inner portion in the radial direction is exposed from the thickened portion that has been thickened in the first processing station by holding the disc-shaped material with the holding jig having a small outer diameter. so,
Another of the forming roller discoid material thickening processing apparatus, wherein Rukoto provided with which the the exposed out portions are stepwise thickening. In claim 2 ,
The last processing station is
The exposed portion is increased in thickness, and the increased thickness portion increased at the first processing station and the increased thickness portion increased at the last processing station are integrally increased. another disc-shaped material thickening processing apparatus, wherein Rukoto provided with the forming rollers. In any one of Claims 1 thru | or 3 ,
The outer diameter of the holding jig provided on each processing station, said processing stations in order of stepwise smaller becomes optionally thickening processing disc-shaped material, characterized in Rukoto that the disc-shaped element is forward apparatus. In any one of Claims 1 thru | or 4 ,
The aforementioned each processing station, on both sides of the disk-shaped material forward path, a circular plate-shaped material thickening of characterized that you have provided two of said forming roller so as to face each other across the that order feed path Processing equipment. In claim 5,
An apparatus for increasing the thickness of a disk-shaped material, wherein the depths of the molding grooves of the two molding rollers facing each other are different. In Claim 5 or 6, the said disk-shaped raw material thickening apparatus is,
The first processing station, the second processing station, and the third processing station are arranged side by side,
The first processing station includes a first forming roller and a second forming roller,
The second processing station includes a third forming roller and a fourth forming roller,
The third processing station includes a fifth forming roller and a sixth forming roller.

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