KR20200116697A - Manufacturing equipment and method for disk for electromagnetic clutch in compressor - Google Patents

Abstract

The present invention relates to equipment and a method for manufacturing a disk of an electromagnetic clutch. According to the present invention, the equipment for manufacturing a disk of an electromagnetic clutch comprises: a support unit; a transfer unit for transferring a member; a first piercing punch; a second piercing punch; a pressing punch for punching the member to process a plurality of rivet grooves; a slotting punch; a blanking unit; and a separation unit. According to the present invention, a disk can be prevented from being damaged.

Description

Electronic clutch disk manufacturing facility and manufacturing method {MANUFACTURING EQUIPMENT AND METHOD FOR DISK FOR ELECTROMAGNETIC CLUTCH IN COMPRESSOR}

The present invention relates to a disk manufacturing facility and a manufacturing method for an electronic clutch.

In general, a compressor constituting an automobile air conditioner is a device that compresses the refrigerant supplied from the evaporator while being driven by the power of the engine and sends it to the condenser. It is installed to selectively receive and drive the engine power by the intermittent action of the electronic clutch . Referring to Republic of Korea Patent No. 1436803 (name: disk of an electronic clutch and its manufacturing method, hereinafter referred to as'prior patent literature'), filed and registered by the applicant of the present invention, conventionally, from the member 1 The cut disk 100 falls downward by its own weight and is collected. Therefore, in the related art, there is a concern that the disk 100 may be damaged by other disks or trays for collection while the disk 100 is dropped and collected.

Korean Patent Registration No. 1436803 (Name: Electronic clutch disk and its manufacturing method) Korean Patent Registration No. 1603088 (Name: ring assembly for electronic clutch, outer ring constituting it, ring assembly for electromagnetic clutch, and manufacturing method of outer ring constituting the same)

The present invention is to solve the problems caused by the prior art as described above, and an object of the present invention is to provide a disk manufacturing facility and a manufacturing method for an electronic clutch configured to prevent damage to the disk during the manufacturing process. .

One aspect of the disk manufacturing equipment for an electromagnetic clutch according to an embodiment of the present invention for achieving the above object includes an inner disk having a through opening; An outer disk whose inner circumferential surface is positioned adjacent to the outer circumferential surface of the inner disk; And a plurality of bridges connecting the inner disk and the outer disk. A manufacturing facility for manufacturing a disk of an electronic clutch comprising: a support unit supporting a bottom surface of a member made of a metal material having a strip shape; A transfer unit for transferring the member supported by the support unit; A first piercing punch striking the member to process the through opening; A second piercing punch striking the member to process a plurality of rivet holes so as to be disposed at equal intervals on a virtual arc concentric with the through opening; A pressing punch for hitting the member to process a plurality of rivet grooves so that the rivet hole is located therein; A slotting punch striking the member to process a plurality of slots in an arc shape so as to be disposed at the same central angle on another virtual arc concentric with the through opening; In order to cut a part of the member including the through opening, a rivet hole, a rivet groove, and a slot from the rest of the member to form the disk having a shape concentric with the through opening and corresponding to the outer circumferential surface of the outer disk. A blanking unit hitting the bottom of the member; A separation unit for separating the disk cut from the rest of the member by the blanking unit above the member from the rest of the member; Including, the first and second piercing punches, pressing punches, slotting punches, blanking units, and separation units are continuously disposed on a path through which the member is transferred by the transfer unit.

In one aspect of the embodiment of the present invention, a portion in the thickness direction of the disk cut by the blanking unit protrudes upward with respect to the upper surface of the member, and the rest of the thickness direction of the disk cut by the blanking unit Is positioned to overlap the member in the horizontal direction.

In an aspect of an embodiment of the present invention, the blanking unit includes: a blanking punch for hitting the bottom of the member for cutting the disk; A blanking pad supporting an upper surface of the disk; And a blanking die piece supporting the remaining upper surface of the member except for the disk. Including, in a state in which the upper surface of the disk and the rest of the member are supported by the blanking pad and the blanking die piece, when the blanking punch hits the bottom surface of the member, a part in the thickness direction of the disk is It protrudes upward with respect to the upper surface of the member and the rest of the disk in the thickness direction is positioned to overlap the member in the horizontal direction.

In one aspect of the embodiment of the present invention, the blanking pad elastically supports the upper surface of the disk.

In one aspect of the present invention, the blanking pad moves upward while the blanking punch strikes the bottom surface of the member while elastically supporting the upper surface of the disk.

In one aspect of the embodiment of the present invention, 70% or more and 90% or less in the thickness direction of the disk cut from the member by the blanking unit protrudes upward with respect to the upper surface of the member, and by the blanking unit More than 10% and less than 30% in the thickness direction of the disk cut from the member are positioned to overlap the member in the horizontal direction.

In one aspect of the embodiment of the present invention, the separating unit separates the disk cut by the blanking unit from the rest of the member above the member by magnetic force.

An aspect of a method of manufacturing a disk for an electronic clutch according to an embodiment of the present invention includes an inner disk having a through opening; An outer disk whose inner circumferential surface is positioned adjacent to the outer circumferential surface of the inner disk; And a plurality of bridges connecting the inner disk and the outer disk. A manufacturing method for manufacturing a disk of an electronic clutch, comprising: processing the through opening by hitting a strip-shaped metal member by a first piercing punch; Processing a plurality of rivet holes by hitting the member so that the second piercing punch is disposed on a virtual arc concentric with the through opening at equal intervals; A pressing punch presses the member to process a plurality of rivet grooves in which the rivet hole is located; Processing a plurality of slots by hitting the member in an arc shape so that the slotting punch is disposed at the same central angle on another virtual arc concentric with the through opening; The blanking unit is concentric with the through opening and hits the bottom surface of the member to form the disk having a shape corresponding to the outer circumferential surface of the outer disk, and the member including the through opening, a rivet hole, a rivet groove, and a slot Cutting a portion from the rest of the member; And separating, by a separation unit, the disk cut from the remainder of the member by the blanking punch above the member from the remainder of the member. Including, wherein the member is transferred by a transfer unit in a state supported by a support unit, and the first and second piercing punches, pressing punches, slotting punches, blanking units and separation units are in the transfer unit. Thus, the member is continuously disposed on the path through which it is conveyed.

In one aspect of the embodiment of the present invention, a portion in the thickness direction of the disk cut by the blanking unit protrudes upward with respect to the upper surface of the member, and the rest of the thickness direction of the disk cut by the blanking unit Is positioned to overlap the member in the horizontal direction.

In one aspect of the embodiment of the present invention, in the process of cutting the disk from the rest of the member by the blanking unit, the top surface of the disk is supported by a blanking pad and the rest of the member is supported by a blanking die piece. In, when the blanking punch hits the bottom surface of the member, a portion in the thickness direction of the disk protrudes upward with respect to the upper surface of the member, and the rest in the thickness direction of the disk is positioned to overlap the member in a horizontal direction. do.

In one aspect of the present invention, the blanking pad moves upward while the blanking punch strikes the bottom surface of the member while elastically supporting the upper surface of the disk.

In one aspect of the embodiment of the present invention, 70% or more and 90% or less in the thickness direction of the disk cut by the blanking unit protrude upward with respect to the upper surface of the member, and the cut by the blanking unit. More than 10% and less than 30% in the thickness direction of the disk are positioned to overlap the member in the horizontal direction.

In one aspect of the embodiment of the present invention, the separating unit separates the disk cut by the blanking unit from the rest of the member above the member by magnetic force.

In the disk manufacturing equipment and manufacturing method for an electronic clutch according to an embodiment of the present invention, the disk cut from the member by the blanking unit is separated from the member by the separating unit above the member. Accordingly, according to the exemplary embodiment of the present invention, damage to the disk occurring in the process of dropping the disk downward and being separated from the member can be prevented as in the prior art.

In particular, in the embodiment of the present invention, the disk cut by the blanking unit is not completely separated from the member, but is separated from the member by the separating unit in the state of being caught on the member. Accordingly, in the embodiment of the present invention, it is possible to prevent a phenomenon in which the disk is separated from the member before being separated from the member by the separating unit and is moved from the original position or is damaged by contact with the member while moving relative to the member.

1 is a plan view showing a disk of an electromagnetic clutch according to an embodiment of the present invention.
2 and 3 are process flow diagrams showing members in a process of manufacturing a disk of an electronic clutch according to an embodiment of the present invention.

Hereinafter, a disk of an electromagnetic clutch according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a plan view showing a disk of an electromagnetic clutch according to an embodiment of the present invention.

Referring to FIG. 1, the disk 101 according to the present embodiment is formed by processing a strip-shaped metal member 100 (see FIGS. 2 and 3). In more detail, the disk 101 includes an inner disk 110, an outer disk 120, and a plurality of bridges 130.

More specifically, the inner disk 110 and the outer disk 120 are formed in a ring shape having the same circular center, and the inner peripheral surface of the outer disk 120 is spaced apart from the outer peripheral surface of the inner disk 110 Is located. In addition, the inner disk 110 and the outer disk 120 are connected by the bridge 130. A through opening 111 is formed in the center of the inner disk 110 and a plurality of rivet holes 121 are formed in the outer disk 120. In addition, a rivet groove 123 is formed in a part of the outer disk 120 including the rivet hole 121. The rivet groove 123 is a place where a rivet (not shown) for coupling with the ring assembly is mounted. Substantially, the rivet groove 123 is formed by recessing a portion of the upper surface of the disk 101. The rivet hole 121 and the rivet groove 123 may be composed of three arranged at equal intervals on a virtual arc concentric with the through opening 111.

In addition, the bridge 130 is substantially defined by an area excluding a plurality of slots 131 formed between the inner disk 110 and the outer disk 120. That is, it may be said that the bridge 130 and the slot 131 are substantially alternately positioned between the inner disk 110 and the outer disk 120. The slots 131 may be formed of three arc-shaped pieces arranged at the same central angle on another virtual arc concentric with the through opening 111.

Meanwhile, the inner disk 110 and the bridge 130 are substantially defined by partially cutting the member 100 to form the through opening 111 and the slot 131. In addition, the outer disk 120 includes a portion of the member 100 including the through opening 111 and the slot 131 in a shape corresponding to the outer peripheral surface of the outer disk 120. It is defined by being cut from the rest. In addition, the rivet hole 121 is formed by cutting a plurality of holes in the member 100 defining the outer disk 120.

Hereinafter, a process of manufacturing a disk for an electronic clutch according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

2 and 3 are process flow diagrams showing members in a process of manufacturing a disk of an electronic clutch according to an embodiment of the present invention.

2 and 3, as shown in (A) to (F) of FIGS. 2 and 3, a member 100 made of a metal material having a strip shape has its bottom surface supported by the support unit 10. In the state, the disk 101 is manufactured while being processed while being transported by the transport unit 20. Substantially, first and second piercing punches 31 and 41, pressing punches 51, and slotting punches that are continuously disposed on the path through which the member 100 is transferred by the transfer unit 20 The member 100 is processed by 61, the blanking unit 70 and the separating unit 80. For example, while the central portion of the member 100 is supported by the support unit 10, both ends of the member 100 may be transferred while being fixed to the transfer unit 20.

More specifically, as shown in FIGS. 2 and 3A, the first piercing punch 31 strikes the member 100 to process the through opening 111. And, as shown in Figures 2 and 3 (B), the second piercing punch 41, a plurality of rivet holes so as to be disposed at equal intervals on a virtual arc concentric with the through opening 111 ( The member 100 is hit to process 121). In addition, as shown in Figures 2 and 3 (C), the pressing punch 51, in order to process a plurality of rivet grooves 123 so that the rivet hole 121 is located inside the member ( 100). Next, as shown in FIGS. 2 and 3(D), the slotting punch 61 is an arc to be disposed at the same central angle on another imaginary arc concentric with the through opening 111. ) Hitting the member 100 to process a plurality of slots 131 in a shape.

The first and second piercing punches 31 and 41, the pressing punch 51 and the slotting punch 61 are, as shown in FIGS. 2 and 3 (A) to (D), the member You can hit the top of (100). In addition, although not shown, when the first and second piercing punches 31 and 41, pressing punches 51 and slotting punches 61 hit the bottom of the member 100, when hitting A separate pad may support the upper surface of the member 100. In addition, the order of processing by the first and second piercing punches 31 and 41, pressing punches 51 and slotting punches 61 may be changed, but the second piercing punch 41 After the rivet hole 121 is processed, the rivet groove 123 is processed by the pressing punch 51. Further, although not shown, the processing of the through opening 111, the rivet hole 121, and the slot 131 may be performed by two or more processes, or a restructuring process may be added before and after each processing process.

Next, as shown in FIGS. 2 and 3E, the blanking unit 70 substantially cuts the disk 101 from the member 100. More specifically, the blanking unit 70 has the through opening 111 to form the disk 101 having a shape concentric with the through opening 111 and corresponding to the outer circumferential surface of the outer disk 101. , A part of the member 100 including the rivet hole 121, the rivet groove 123, and the slot 131 is cut from the rest of the member 100.

In particular, in the present embodiment, a part of the disk 101 in the thickness direction cut by the blanking unit 70 protrudes upward with respect to the upper surface of the member 100, and is attached to the blanking unit 70. The rest of the cut disk 101 in the thickness direction is positioned to overlap the member 100 in the horizontal direction. In other words, the disk 101 cut from the member 100 by the blanking unit 70 is not completely separated from the member 100 and is held in a state that is caught by the member 100.

In more detail, the blanking unit 70 includes a blanking punch 71, a blanking pad 72, and a blanking die piece 73. The blanking punch 71 hits the bottom surface of the member 100 for cutting the disk 101. Further, the blanking pad 72 and the blanking die piece 73 support an upper surface of the disk 101 and the remaining upper surfaces of the member 100 excluding the disk 101, respectively. At this time, the blanking pad 72 elastically supports the upper surface of the disk 101 and elastically supports the upper surface of the disk 101, and the blanking punch 71 is the bottom surface of the member 100 It moves upward in the process of hitting. Therefore, while the upper surface of the disk 101 and the rest of the member 100 are supported by the blanking pad 72 and the blanking die piece 73, the blanking punch 71 is When hitting the bottom surface, a part of the disk 101 in the thickness direction protrudes upward with respect to the upper surface of the member 100, and the rest of the disk 101 in the thickness direction is horizontal with the member 100 Can be positioned to overlap.

On the other hand, as shown in Figures 2 and 3 (F), the separation unit 80 is cut from the rest of the member 100 by the blanking unit 70 above the member 100 The disk 101 is separated from the rest of the member 100. In particular, in the present embodiment, the separating unit 80, the disk 101 cut by the blanking unit 70 from the rest of the member 100 above the member 100 by magnetic force. It is separated by adsorption. In other words, in this embodiment, the disk 101 in the state of being caught by the member 100 is adsorbed by the separating unit 80 by magnetic force and separated from the rest of the member 100. To this end, the separating unit 80 may include an electromagnet that selectively provides a magnetic force for separating the disk 101 from the rest of the member 100.

As described above, a part of the disk 101 in the thickness direction protrudes upward with respect to the upper surface of the member 100, and the rest of the disk 101 in the thickness direction is horizontal with the member 100 That is, that the disk 101 is positioned to be overlapped with each other, that is, maintaining the state in which the member 100 is caught, the disk 101 moves relative to the member 100 and is spaced apart from the original position or the This is to prevent damage due to contact with the member 100.

In other words, as described above, the first and second piercing punches 31 and 41, pressing punches 51, slotting punches 61, and blanking units 70 are provided in the transfer unit 20. Accordingly, the member 100 is continuously disposed on a path through which the member 100 is transported and strikes the member 100. Therefore, when the disk 101 is completely separated from the rest of the member 100, the disk 101 is applied to the rest of the member 100 by an external force acting in the process of processing the member 100. You can move against the opponent. And when the member 100 moves relative to the disk 101, the magnetic force of the separating unit 80 does not accurately act on the disk 101, so that the disk 101 There is a concern that it cannot be separated from the rest.

In addition, when the disk 101 is completely separated from the rest of the member 100, the member 100 repeatedly bounces and falls upward by an external force acting on the member 100 in the vertical direction. ) Can be contacted. And if such contact is repeated, the disk 101 may be damaged or further, the disk 101 may fall to the outside of the support unit 10.

In this embodiment, 70% or more and 90% or less in the thickness direction of the disk 101 cut from the member 100 by the blanking unit 70 upwardly with respect to the upper surface of the member 100 More than 10% and less than 30% in the thickness direction of the disk 101 protruding and cut from the member 100 by the blanking unit 70 are positioned to overlap the member 100 in the horizontal direction. . In this way, the disk 101 protrudes and overlaps from the member 100 in the thickness direction, while the disk 101 is adsorbed and detachable by the magnetic force of the separating unit 80, and the member 100 It is determined to prevent a phenomenon in which the disk 101 is arbitrarily separated from the rest of the member 100 due to an external force acting on ). In other words, the extent in which the disk 101 protrudes upward with respect to the upper surface of the member 100 in its thickness direction is less than the above-described range (the disk 101 is horizontal with the member 100 in the thickness direction). If the range overlapping in the direction exceeds the above-described range), the magnetic force required to separate the disk 101 from the rest of the member 100 may be excessively increased, so that a high-power electromagnet may be required. . Conversely, the range in which the disk 101 protrudes upward with respect to the upper surface of the member 100 in its thickness direction exceeds the above-described range (the disk 101 is horizontally aligned with the member 100 in the thickness direction If the overlapping range is less than the above-described range), the disk 101 is separated from the rest of the member 100 before being separated by the separation unit 80 by an external force acting on the member 100. There is a risk of separation.

Within the scope of the basic technical idea of the present invention, many other modifications are possible for those of ordinary skill in the art, as well as the scope of the present invention should be interpreted based on the appended claims. .

100: disk 100A: first cut surface
100B: second cut surface 110: inner disk
120: outer disk 130: bridge

Claims (13)

An inner disk 101 in which a through opening 111 is formed; An outer disk 101 whose inner circumferential surface is positioned adjacent to the outer circumferential surface of the inner disk 101; And a plurality of bridges 130 connecting the inner disk 101 and the outer disk 101. In the manufacturing equipment for manufacturing the disk 101 of the electronic clutch comprising:
A support unit 10 on which a bottom surface of the member 100 of a metal material having a strip shape is supported;
A transfer unit 20 for transferring the member 100 supported by the support unit 10;
A first piercing punch (31) striking the member (100) to process the through opening (111);
A second piercing punch (41) striking the member (100) to process a plurality of rivet holes (121) arranged at equal intervals on a virtual arc concentric with the through opening (111);
A pressing punch 51 hitting the member 100 to process a plurality of rivet grooves 123 so that the rivet hole 121 is positioned therein;
A slotting punch 61 hitting the member 100 to process a plurality of slots 131 in an arc shape so as to be disposed at the same central angle on another virtual arc concentric with the through opening 111 ;
The through opening 111, the rivet hole 121, the rivet groove 123 and the through opening 111 to form the disk 101 having a shape concentric with the through opening 111 and corresponding to the outer circumferential surface of the outer disk 101 A blanking unit (70) striking the bottom of the member (100) in order to cut a portion of the member (100) including the slot (131) from the rest of the member (100);
A separation unit 80 for separating the disk 101 cut from the rest of the member 100 by the blanking unit 70 above the member 100 from the rest of the member 100; Including,
The first and second piercing punches 31 and 41, pressing punches 51, slotting punches 61, blanking units 70, and separation units 80 are formed by the transfer unit 20. A disk manufacturing facility of an electronic clutch that is continuously disposed on a path through which the member 100 is transported.
The method of claim 1,
A portion of the disk 101 in the thickness direction cut by the blanking unit 70 protrudes upward with respect to the upper surface of the member 100, and the disk 101 cut by the blanking unit 70 ) The rest of the thickness direction of the disk manufacturing facility of the electronic clutch is positioned to overlap the member 100 in the horizontal direction.
The method of claim 1,
The blanking unit 70,
A blanking punch 71 hitting the bottom surface of the member 100 for cutting the disk 101;
A blanking pad 72 supporting an upper surface of the disk 101; And
A blanking die piece 73 supporting the rest of the upper surface of the member 100 except for the disk 101; Including,
With the blanking pad 72 and the blanking die piece 73 supporting the upper surface of the disk 101 and the rest of the member 100, the blanking punch 71 is the bottom surface of the member 100 When hitting, a portion of the disk 101 in the thickness direction protrudes upward with respect to the upper surface of the member 100, and the rest of the disk 101 in the thickness direction is horizontal with the member 100. An electronic clutch disk manufacturing facility positioned to be overlapped.
The method of claim 3,
The blanking pad 72 is a disk manufacturing facility for an electronic clutch that elastically supports the upper surface of the disk 101.
The method of claim 4,
The blanking pad 72 elastically supports the upper surface of the disk 101, while the blanking punch 71 strikes the bottom surface of the member 100, manufacturing a disk of an electronic clutch that moves upward equipment.
The method according to any one of claims 2 to 7,
70% or more and 90% or less in the thickness direction of the disk 101 cut from the member 100 by the blanking unit 70 protrudes upward with respect to the upper surface of the member 100, and the blanking The disk manufacturing of an electronic clutch that is positioned to overlap with the member 100 in a horizontal direction exceeding 10% and less than 30% in the thickness direction of the disk 101 cut from the member 100 by the unit 70 equipment.
The method according to any one of claims 2 to 5,
The separating unit 80 is of an electronic clutch that adsorbs and separates the disk 101 cut by the blanking unit 70 from the rest of the member 100 above the member 100 by magnetic force. Disk manufacturing equipment.
An inner disk 101 in which a through opening 111 is formed; An outer disk 101 whose inner circumferential surface is positioned adjacent to the outer circumferential surface of the inner disk 101; And a plurality of bridges 130 connecting the inner disk 101 and the outer disk 101. In the manufacturing method for manufacturing the disk 101 of the electronic clutch comprising:
Processing the through opening 111 by hitting the member 100 of a metal material having a strip shape by the first piercing punch 31;
Processing a plurality of rivet holes 121 by hitting the member 100 so that the second piercing punch 41 is disposed on a virtual arc concentric with the through opening 111 at equal intervals;
A pressing punch 51 pressing the member 100 to process a plurality of rivet grooves 123 in which the rivet hole 121 is located therein;
A plurality of slots 131 are processed by hitting the member 100 in an arc shape so that the slotting punch 61 is disposed at the same central angle on another virtual arc concentric with the through opening 111 Step to do;
The blanking unit 70 strikes the bottom surface of the member 100 to form the disk 101 having a shape concentric with the through opening 111 and corresponding to the outer circumferential surface of the outer disk 101 to penetrate the Cutting a portion of the member 100 including the opening 111, the rivet hole 121, the rivet groove 123, and the slot 131 from the rest of the member 100; And
Separating, by the separation unit 80, the disk 101 cut from the rest of the member 100 by the blanking punch 71 above the member 100 from the rest of the member 100 ; Including,
The member 100 is transferred by the transfer unit 20 in a state supported by the support unit 10,
The first and second piercing punches 31 and 41, pressing punches 51, slotting punches 61, blanking units 70, and separation units 80 are formed by the transfer unit 20. A method of manufacturing a disk of an electronic clutch that is continuously disposed on a path through which the member 100 is transferred.
The method of claim 8,
A portion of the disk 101 in the thickness direction cut by the blanking unit 70 protrudes upward with respect to the upper surface of the member 100, and the disk 101 cut by the blanking unit 70 ) The rest of the thickness direction of the disk manufacturing method of the electronic clutch is positioned to overlap the member 100 in the horizontal direction.
The method of claim 8,
In the process of the blanking unit 70 cutting the disk 101 from the rest of the member 100,
When the upper surface of the disk 101 is supported by the blanking pad 72 and the rest of the member 100 is supported by the blanking die piece 73, the blanking punch 71 is When hitting the bottom surface, a part of the disk 101 in the thickness direction protrudes upward with respect to the upper surface of the member 100, and the rest of the disk 101 in the thickness direction is horizontal with the member 100 Disc manufacturing method of the electronic clutch that is positioned to be overlapped.
The method of claim 10,
The blanking pad 72 elastically supports the upper surface of the disk 101, while the blanking punch 71 strikes the bottom surface of the member 100, manufacturing a disk of an electronic clutch that moves upward Way.
The method according to any one of claims 9 to 11,
70% or more and 90% or less in the thickness direction of the disk 101 cut by the blanking unit 70 protrudes upward with respect to the upper surface of the member 100, and by the blanking unit 70 A method of manufacturing a disk of an electronic clutch in which more than 10% and less than 30% of the cut disk 101 in the thickness direction are positioned to overlap the member 100 in a horizontal direction.
The method according to any one of claims 9 to 11,
The separating unit 80 is of an electronic clutch that adsorbs and separates the disk 101 cut by the blanking unit 70 from the rest of the member 100 above the member 100 by magnetic force. Disc manufacturing method.

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