Positioning method, method for manufacturing disc-shaped substrate, positioning apparatus, and apparatus for manufacturing disc-shaped substrate

Abstract

To provide a positioning method, a method for manufacturing a disk-shaped substrate, a positioning device, and an apparatus for manufacturing of the disk-shaped substrate, capable of suppressing reduction in efficiency of positioning processing.SOLUTION: A positioning method includes: placing a disk-shaped substrate having an inner periphery and a hole surrounded by the inner periphery on a table; bringing a contact portion inserted into the hole from the table side into contact with the inner periphery; and positioning the disk-shaped substrate in a direction along a radial direction of the disk-shaped substrate before conveying the disk-shaped substrate to a predetermined position on the table of a processing apparatus.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a positioning method, a method for manufacturing a disk-shaped substrate, a positioning device, and a device for manufacturing a disk-shaped substrate. [Background technology]

[0002] Patent Documents 1, 2, and 3 disclose polishing machines equipped with an unmachined workpiece batch transfer device that transfers each workpiece waiting in an unmachined workpiece waiting section to a polishing section in a batch. In the polishing machine of Patent Document 1, a dish-shaped workpiece receiving section receives and positions the unmachined workpieces before transferring them in a batch. In the polishing machines of Patent Documents 2 and 3, a loader tray receives and positions the unmachined workpieces before transferring them in a batch. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 2535089 [Patent Document 2] Japanese Patent Application Laid-Open No. 2007-283457 [Patent Document 3] Japanese Patent Application Laid-Open No. 2013-103321 Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, when a dish-shaped member is used as a positioning member for a disk-shaped substrate, such as a disk-shaped unmachined workpiece, the disk-shaped substrate is positioned by contacting its outer periphery with the positioning member. Therefore, every time the outer diameter of the disk-shaped substrate changes, the dish-shaped member serving as the positioning member must be replaced with one having an inner diameter that matches the new outer diameter. As a result, the efficiency of the positioning process for positioning the disk-shaped substrate decreases.

[0005] Therefore, an object of the present disclosure is to provide a positioning method, a method for manufacturing a disk-shaped substrate, a positioning device, and a disk-shaped substrate manufacturing device that suppress a decrease in the efficiency of the positioning process. [Means for solving the problem]

[0006] The present disclosure includes the following aspects. <1> a disk-shaped substrate having an inner periphery and a hole surrounded by the inner periphery is placed on a table, and a contact portion inserted into the hole from the table side is brought into contact with the inner periphery, thereby positioning the disk-shaped substrate in a direction along the radial direction of the disk-shaped substrate before transporting it to a predetermined position of a processing device; Positioning method. <2> The disk-shaped substrate is positioned in a thickness direction of the substrate. <1> The positioning method according to claim 1. <3> the contact portion is brought into contact with the inner periphery of the disk-shaped substrate at a plurality of positions in the circumferential direction. <1> or <2> The positioning method according to claim 1. <4> the positioning unit including the contact portion positions the disk-shaped substrate having an outer periphery in a non-contact state with respect to the outer periphery; <1> ~ <3> 10. The positioning method according to claim 9, wherein the first and second positions are aligned in a plane parallel to each other. <5> a positioning step of placing a plurality of disk-shaped substrates, each having an inner periphery and a hole surrounded by the inner periphery, on a table, and positioning each of the plurality of disk-shaped substrates in a direction along the radial direction of the disk-shaped substrates by bringing contact portions inserted into the holes from the table side into contact with the inner periphery; a transport step of transporting the positioned disk-shaped substrate to a predetermined position of a processing device while maintaining the relative positional relationship of the plurality of disk-shaped substrates; a processing step of processing the disk-shaped substrate transported to the predetermined position; A method for manufacturing a disk-shaped substrate comprising: <6> a base on which a disk-shaped substrate having an inner periphery and a hole surrounded by the inner periphery is placed; a contact portion that is provided on the table so as to be insertable into the hole, and that contacts the inner periphery to position the disk-shaped substrate in a direction along the radial direction of the disk-shaped substrate before the disk-shaped substrate is transported to a predetermined position in a processing device; A positioning device comprising: <7> a positioning device including: a table on which a plurality of disk-shaped substrates, each having an inner periphery and a hole surrounded by the inner periphery, are placed; and a contact portion provided on the table so as to be insertable into the hole, the contact portion contacting the inner periphery to position each of the plurality of disk-shaped substrates in a direction along the radial direction of the disk-shaped substrate; a processing device that processes the disk-shaped substrate; a transport device that transports the plurality of disk-shaped substrates to a predetermined position in the processing device while maintaining the relative positional relationship of the disk-shaped substrates; An apparatus for manufacturing a disk-shaped substrate comprising: [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide a positioning method, a method for manufacturing a disk-shaped substrate, a positioning device, and a disk-shaped substrate manufacturing device that suppress a decrease in efficiency of the positioning process. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view illustrating a positioning device according to an embodiment of the present disclosure. [Figure 2] FIG. 10 is a plan view illustrating a positioning portion according to an embodiment of the present disclosure. [Figure 3] 3 is a side cross-sectional view of the positioning portion of the embodiment of the present disclosure, specifically, a cross-sectional view taken along line 3-3 of FIG. [Figure 4] 1 is a side cross-sectional view showing a positioning unit and a transport device according to an embodiment of the present disclosure. [Figure 5] FIG. 1 is a side view showing a manufacturing apparatus according to an embodiment of the present disclosure. [Figure 6] 10 is a side view illustrating a state in which a suction unit suctions a disk-shaped substrate positioned by a positioning unit in the manufacturing apparatus according to the embodiment of the present disclosure. FIG. [Figure 7]10 is a side view showing a state in which a conveying device conveys a disk-shaped substrate from a positioning unit to a stage of a processing device in the manufacturing apparatus according to the embodiment of the present disclosure. FIG. [Figure 8] 10 is a side view showing a state in which the transport device transports a disk-shaped substrate to a stage of a processing device in the manufacturing apparatus according to the embodiment of the present disclosure. FIG. [Figure 9] 1 is a side view showing a state in which a processing device processes a disk-shaped substrate in a manufacturing apparatus according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described. However, the present disclosure is not limited to the following embodiments. In the following embodiments, components are not essential unless otherwise specified. When embodiments are described with reference to the drawings in this disclosure, the configuration of the embodiment is not limited to the configuration shown in the drawings. Furthermore, the sizes of components in each drawing are conceptual. Therefore, the front-to-back, left-to-right, and top-to-bottom dimensional ratios of each component, and the front-to-back, left-to-right, and top-to-bottom dimensional ratios between components, are not limited to the illustrated dimensional ratios. Furthermore, the front-to-back, left-to-right, and top-to-bottom dimensional ratios of each component may differ from the actual dimensional ratios. Furthermore, unless otherwise specified in this disclosure, the number of each component element of this disclosure is not limited to one, and may be present in plural. Note that in the following description of the drawings, similar parts are denoted by similar reference numerals.

[0010] <Manufacturing equipment 90> As an example of the disk-shaped substrate manufacturing apparatus of the present disclosure, a manufacturing apparatus 90 will be described below with reference to the drawings. Note that the disk-shaped substrate manufacturing apparatus of the present disclosure is not limited to the manufacturing apparatus 90.

[0011] The manufacturing apparatus 90 is an apparatus that processes the disk-shaped substrate 100 to manufacture the disk-shaped substrate 200. In other words, the disk-shaped substrate 200 is a processed disk-shaped substrate obtained by processing the disk-shaped substrate 100. As shown in Fig. 5, the manufacturing apparatus 90 includes a positioning device 10, a transport device 30, and a processing device 40. The disk-shaped substrate 100, each part of the manufacturing apparatus 90, and modified examples of the manufacturing apparatus 90 will be described below.

[0012] <Disc-shaped substrate 100> The disk-shaped substrate 100 is a substrate formed in a disk shape, as shown in Figures 2 and 3. Specifically, the disk-shaped substrate 100 is formed in an annular shape having an inner periphery 100A, an outer periphery 100B, and a hole 100C surrounded by the inner periphery 100A in a plan view. Note that the plan view here refers to the case where the disk-shaped substrate 100 is viewed from one side in the thickness direction of the disk-shaped substrate 100. The disk-shaped substrate 100 is a substrate before processing by a processing device 40, which will be described later.

[0013] Furthermore, the disk-shaped substrate 100 is formed in a plate shape having one surface 100J and the other surface 100K. Hereinafter, the one surface 100J will be referred to as the first surface 100J. Hereinafter, the other surface 100K will be referred to as the second surface 100K. Note that the boundary portion between the first surface 100J and the inner circumference 100A of the disk-shaped substrate 100 and the boundary portion between the second surface 100K and the inner circumference 100A of the disk-shaped substrate 100 may be regarded as part of the inner circumference 100A. Also, the boundary portion between the first surface 100J and the outer circumference 100B of the disk-shaped substrate 100 and the boundary portion between the second surface 100K and the outer circumference 100B of the disk-shaped substrate 100 may be regarded as part of the outer circumference 100B. Note that the aforementioned boundary portions may also be referred to as ridge portions.

[0014] The disk-shaped substrate 100 may be, for example, a substrate for a magnetic recording medium. Furthermore, the disk-shaped substrate 100 may be a substrate formed of a metal material such as aluminum or an aluminum alloy substrate, or glass. Hereinafter, aluminum substrates, aluminum alloy substrates, and glass substrates are also collectively referred to as "substrates." Hereinafter, aluminum substrates and aluminum alloy substrates are also collectively referred to as "aluminum substrates." A plating layer may be formed on the surface of the aluminum substrate. Furthermore, the disk-shaped substrate 100 to be positioned by the positioning device 10 may be, for example, a plurality of types of disk-shaped substrates 100 having the same inner diameter but different outer diameters.

[0015] The use, material, type, etc. of the disk-shaped substrate 100 are not limited to those described above, and various disk-shaped substrates can be used as the disk-shaped substrate 100.

[0016] <Positioning device 10> The positioning device 10 is an example of a positioning device of the present disclosure. The positioning device 10 is a device that positions a disk-shaped substrate 100. Specifically, as shown in FIG. 1 , the positioning device 10 includes, for example, a plurality of positioning units 12 and a support 14.

[0017] As shown in Fig. 1, the support 14 has a function of supporting the positioning portion 12. The support 14 is formed in a disk shape. Specifically, the support 14 is formed in a substantially circular shape having an outer periphery 14B in a plan view. The plan view here refers to the case where the support 14 is viewed from one side in the thickness direction of the support 14.

[0018] 2 and 3, each of the positioning portions 12 contacts the inner periphery 100A of the disk-shaped substrate 100 and positions the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100. The direction along the radial direction of the disk-shaped substrate 100 can also be referred to as a direction along the first surface 100J or the second surface 100K of the disk-shaped substrate 100.

[0019] As shown in Fig. 1, for example, five of the positioning portions 12 are provided on the upper surface of the support body 14. As shown in Figs. 1, 2, and 3, each of the positioning portions 12 has, for example, a base 20, a plurality of contact portions 21, a plurality of spaces 22, and a support portion 23. In Fig. 1, each portion of one of the positioning portions 12 is assigned a reference symbol.

[0020] As shown in Fig. 3, a disk-shaped substrate 100 is placed on the upper surface of the base 20. As shown in Fig. 1, the base 20 is formed, for example, in a disk shape. Specifically, as shown in Fig. 2, the base 20 is formed in a circular shape having an outer periphery 20B in a plan view. The plan view here refers to the case where the base 20 is viewed from one side in the thickness direction of the base 20. Note that disk-shaped substrates 100 having different outer diameters can be interchangeably placed on the base 20.

[0021] The base 20 has a smaller diameter than the disk-shaped substrate 100. As shown in Figures 2 and 3, when the disk-shaped substrate 100 is placed on the base 20, the disk-shaped substrate 100 protrudes beyond the outer periphery 20B of the base 20 toward the outer periphery of the base 20.

[0022] As shown in FIGS. 2 and 3, each of the multiple contact portions 21 is provided so as to be insertable into a hole 100C of the disk-shaped substrate 100 from the base 20 side. Each of the multiple contact portions 21 is inserted into the hole 100C and comes into contact with the inner periphery 100A of the disk-shaped substrate 100. The multiple contact portions 21 are provided, for example, on the upper surface of the base 20, in the center of the base 20 in a plan view. Furthermore, the multiple contact portions 21 protrude upward from the base 20. The multiple contact portions 21 are inserted into the hole 100C of the disk-shaped substrate 100 placed on the base 20. The tips of the contact portions 21 pass from the second surface 100K side to the first surface 100J side.

[0023] The plurality of contact portions 21 are arranged along the circumferential direction of the base 20. Therefore, in the positioning unit 12, the plurality of contact portions 21 come into contact with the inner periphery of the disk-shaped substrate 100 at a plurality of positions along the circumferential direction, and position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100.

[0024] Specifically, three of the contact portions 21 are arranged along the circumferential direction of the base 20. Therefore, the contact portions 21 come into contact with the inner periphery 100A of the disk-shaped substrate 100 at three positions in the circumferential direction. The contact portions 21 are arranged, for example, at equal angular intervals.

[0025] As described above, the positioning unit 12 positions the disk-shaped substrate 100 in the radial direction of the disk-shaped substrate 100 by having the multiple contact portions 21 come into contact with the inner periphery 100A of the disk-shaped substrate 100. In other words, the positioning unit 12 restricts movement of the disk-shaped substrate 100 in the radial direction of the disk-shaped substrate 100 by having the contact portions 21 come into contact with the inner periphery 100A of the disk-shaped substrate 100. Specifically, the positioning unit 12 positions the disk-shaped substrate 100 in, for example, two different directions along the radial direction of the disk-shaped substrate 100. Specifically, the two different directions are two orthogonal directions. The two different directions can be understood as, for example, the Y direction and the X direction in FIG. 2. Note that the contact unit 21 may be fixed to the base 20 or may be movable, as long as it can contact the inner periphery 100A and position the disk-shaped substrate 100.

[0026] Each of the plurality of contact portions 21 has an outer peripheral surface 21B formed in an arc shape along the inner periphery 100A of the disk-shaped substrate 100, for example. In the contact portion 21, the outer peripheral surface 21B contacts a part of the inner periphery 100A of the disk-shaped substrate 100 in the circumferential direction. The outer peripheral surface 21B has a predetermined outer diameter. Specifically, the predetermined outer diameter corresponds to the inner diameter of the disk-shaped substrate 100.

[0027] The positioning unit 12 positions the disk-shaped substrate 100 in the thickness direction of the disk-shaped substrate 100 by placing the disk-shaped substrate 100 on the base 20. As described above, the positioning unit 12 positions the disk-shaped substrate 100 in the radial direction and thickness direction of the disk-shaped substrate 100.

[0028] The positioning portion 12 positions the disk-shaped substrate 100 without contacting the outer periphery 100B of the disk-shaped substrate 100. That is, in this embodiment, the positioning portion 12 does not have a portion that contacts the outer periphery 100B of the disk-shaped substrate 100. Note that this does not exclude a mode in which other members than the positioning portion 12, such as elastic members or movable members, come into contact with the outer periphery 100B of the disk-shaped substrate 100, as long as the effect of this embodiment is not impaired.

[0029] The spaces 22 are spaces for receiving the holding portions 82 (described later) that hold the disk-shaped substrate 100. The spaces 22 are arranged between the plurality of contact portions 21 along the circumferential direction of the base 20.

[0030] As shown in Fig. 3, the support portion 23 has a function of supporting the second surface 100K of the disk-shaped substrate 100 placed on the platform 20. Specifically, as shown in Fig. 2 and Fig. 4, the support portion 23 supports the second surface 100K of the disk-shaped substrate 100 at a position facing a contact position on the first surface 100J of the disk-shaped substrate 100 where an adsorption portion 33, described below, comes into contact. Hereinafter, the position facing the contact position will be referred to as the facing position.

[0031] The opposing position can also be said to be a position that overlaps the contact position in the thickness direction of the disk-shaped substrate 100. The opposing position only needs to overlap at least a portion of the contact position in the thickness direction of the disk-shaped substrate 100.

[0032] The support portion 23 is provided, for example, on the upper surface of the base 20, on the outer periphery of the contact portion 21. The support portion 23 is formed, for example, in an annular shape along the circumferential direction of the disk-shaped substrate 100. Specifically, the support portion 23 is, for example, an O-ring made of an elastically deformable material such as rubber. The support portion 23 is attached coaxially to the base 20 in a state where it protrudes upward from the upper surface of the base 20 relative to a groove 25 formed in the upper surface of the base 20.

[0033] As will be described later, a plurality of suction units 33 are arranged along the circumferential direction of the disk-shaped substrate 100, and come into contact with the first surface 100J of the disk-shaped substrate 100 at a plurality of contact positions along the circumferential direction. In contrast, the support units 23 support the second surface 100K of the disk-shaped substrate 100 at opposing positions that face the plurality of contact positions. In Fig. 2, the contact positions of the suction units 33 are indicated by the two-dot chain lines denoted by the reference numeral 33.

[0034] 3, the positioning unit 12 supports, for example, the disk-shaped substrate 100 placed above the upper surface of the base 20 only by the support portion 23. That is, a gap is formed between the disk-shaped substrate 100 supported by the support portion 23 and the base 20. The support portion 23 may be considered to be a member that constitutes part of the base 20.

[0035] As described above, in the positioning unit 12, the support unit 23 supports the second surface 100K at the opposing position, while the contact unit 21 positions the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100. In the positioning device 10, the contact unit 21 of each of the positioning units 12 contacts the inner periphery 100A of each of the disk-shaped substrates 100, and positions the disk-shaped substrates 100 in a direction along the radial direction of the disk-shaped substrate 100.

[0036] <Modifications of the positioning device 10> The positioning device 10 positions the disk-shaped substrate 100 in two orthogonal directions along the radial direction of the disk-shaped substrate 100, but is not limited thereto. The positioning device 10 may, for example, position the disk-shaped substrate 100 in two directions along the radial direction of the disk-shaped substrate 100 that intersect at an angle of less than 90 degrees. Furthermore, the positioning device 10 may, for example, position the disk-shaped substrate 100 in one direction along the radial direction of the disk-shaped substrate 100. That is, the positioning device 10 may be configured to position the disk-shaped substrate 100 in any direction along the radial direction of the disk-shaped substrate 100. In other words, the positioning device 10 may be configured to position the disk-shaped substrate 100 in any direction along the first surface 100J or the second surface 100K of the disk-shaped substrate 100. The one direction along the radial direction of the disk-shaped substrate 100 is, for example, the X direction or the Y direction shown in FIG. 2.

[0037] Furthermore, in the positioning device 10, the contact portion 21 comes into contact with the inner circumference 100A of the disk-shaped substrate 100 at three circumferential positions to position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100, but this is not limited to this. In the positioning device 10, the contact portion 21 may come into contact with the inner circumference 100A of the disk-shaped substrate 100 at four or more circumferential positions to position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100. Furthermore, in the positioning device 10, the contact portion 21 may come into contact with the inner circumference 100A of the disk-shaped substrate 100 at one or two circumferential positions to position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100.

[0038] Furthermore, in the positioning device 10, the positioning unit 12 positions the disk-shaped substrate 100 in the radial direction and thickness direction of the disk-shaped substrate 100, but this is not limited to this. The positioning unit 12 only needs to position the disk-shaped substrate 100 at least in the radial direction of the disk-shaped substrate 100.

[0039] The positioning device 10 includes, but is not limited to, a plurality of positioning units 12. The positioning device 10 is required to include at least one positioning unit 12, and the number of positioning units 12 is not limited to a plurality.

[0040] 1 illustrates one support 14, the positioning device 10 may include a plurality of supports 14 each provided with one or more positioning units 12. When the positioning device 10 includes a plurality of supports 14, the positioning device 10 may further include a support that supports the plurality of supports 14.

[0041] Although the positioning device 10 includes a support 14, the positioning device 10 does not necessarily have to include the support 14. In this case, for example, it is possible to use a single positioning device in which multiple positioning units 12 are integrally formed. In other words, the positioning device 10 may position multiple disk-shaped substrates 100 using a single positioning unit.

[0042] The positioning portion 12 has, but is not limited to, a base 20, a plurality of contact portions 21, a plurality of spaces 22, and a support portion 23. The positioning portion 12 may be any portion that comes into contact with at least the inner periphery 100A of the disk-shaped substrate 100 and positions the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100.

[0043] In the positioning device 10, the support portion 23 is formed in an annular shape, but is not limited to this. In the positioning device 10, the support portion 23 may be formed in a frame shape that is, for example, a polygonal shape such as a triangle or a rectangle in a plan view, and support portions 23 of various shapes can be used. Furthermore, the positioning device 10 may be configured such that a plurality of support portions 23 are arranged at contact positions along the circumferential direction of the disk-shaped substrate 100. In other words, the support portion 23 is not limited to being continuous along the circumferential direction of the disk-shaped substrate 100, but may be a plurality of support portions 23 arranged at intervals along the circumferential direction of the disk-shaped substrate 100.

[0044] The positioning unit 12 positions the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100 while supporting the second surface 100K of the disk-shaped substrate 100 at an opposing position opposing the contact position where the suction unit 33 contacts the first surface 100J of the disk-shaped substrate 100, but is not limited to this. The positioning unit 12 may also position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100 while supporting the second surface 100K of the disk-shaped substrate 100 at a position different from the opposing position.

[0045] <Conveyor device 30> 5, 6, 7, and 8, the transport device 30 is a device that transports the disk-shaped substrate 100 positioned by the positioning device 10 to a predetermined position in the processing device 40. Specifically, the transport device 30 transports the disk-shaped substrate 100 to the predetermined position, which is the destination, in a state in which a portion of the first surface 100J of the disk-shaped substrate 100 is sucked by a suction section 33, which will be described later.

[0046] In this embodiment, the transport device 30 transports the disk-shaped substrates 100 to the predetermined position while maintaining the relative positional relationship between the disk-shaped substrates 100 by moving the disk-shaped substrates 100 while holding the disk-shaped substrates 100. Specifically, the transport device 30 has, for example, a holding unit 32 and a moving mechanism 34.

[0047] The holding unit 32 holds the disk-shaped substrate 100. Specifically, the holding unit 32 has, for example, an adsorption unit 33, and holds the disk-shaped substrate 100 by adsorbing the first surface 100J of the disk-shaped substrate 100 with the adsorption unit 33. For example, a suction cup can be used as the adsorption unit 33. Note that the adsorption unit 33 may be one that adsorbs by suction, or other adsorption units may also be used.

[0048] As shown in Fig. 2, a plurality of suction units 33 are arranged along the circumferential direction of the disk-shaped substrate 100, and come into contact with the first surface 100J of the disk-shaped substrate 100 at a plurality of contact positions along the circumferential direction. Note that in Fig. 2, as described above, the contact positions of the suction units 33 are indicated by the two-dot chain lines indicated by the reference numeral 33. The transport device 30 transports one disk-shaped substrate 100 while the disk-shaped substrate 100 is held by the plurality of suction units 33. Note that, for example, three suction units 33 are provided.

[0049] The moving mechanism 34 is a mechanism that moves the holder 32. The moving mechanism 34 transports the disk-shaped substrate 100 by moving the holder 32 that is holding the disk-shaped substrate 100. For example, a three-axis robot that can move in the front-to-back, left-to-right, and up-and-down directions can be used as the moving mechanism 34. Note that the moving mechanism 34 is not limited to a three-axis robot, and any mechanism that can move the holder 32 can be used.

[0050] As shown in FIG. 6 , in the transfer device 30, the holder 32 holds the disk-shaped substrate 100 positioned by the positioning device 10 by contacting the suction portion 33 with the disk-shaped substrate 100 and adsorbing it. Next, in the transfer device 30, while the holder 32 is holding the disk-shaped substrate 100, the movement mechanism 34 moves the holder 32, for example, in a predetermined movement direction as shown in FIG. 7 , thereby transferring the disk-shaped substrate 100 to a predetermined position on the stage 42 of the processing device 40. The movement direction is, for example, the direction of arrow A and the direction of arrow B in FIG. 7 . Then, in the transfer device 30, the suction by the holder 32 is released, thereby placing the disk-shaped substrate 100 at a predetermined position on the stage 42 of the processing device 40. As a result, as shown in FIG. 8 , the transfer device 30 transfers the plurality of disk-shaped substrates 100 to predetermined positions on the stage 42 of the processing device 40 while maintaining the relative positional relationship between the disk-shaped substrates 100.

[0051] <Modification of the conveying device 30> The transfer device 30 transfers the disk-shaped substrates 100 positioned by the positioning device 10 to a predetermined position on the table 42 of the processing device 40 while maintaining the relative positional relationship between the multiple disk-shaped substrates 100, but is not limited to this. The transfer device of the present disclosure may, for example, transfer the multiple disk-shaped substrates 100 while changing the relative positions of the multiple disk-shaped substrates 100. Furthermore, the transfer device of the present disclosure may, for example, transfer the multiple disk-shaped substrates 100 one by one.

[0052] In the conveying device 30, the disk-shaped substrate 100 is held by the suction unit 33, but this is not limited to this. The conveying device of the present disclosure may use, for example, a holding unit that holds the disk-shaped substrate 100 by pressing it against at least one of the inner circumference 100A and the outer circumference 100B of the disk-shaped substrate 100.

[0053] <Processing equipment 40> The processing apparatus 40 shown in FIG. 9 processes a disk-shaped substrate 100 carried onto a table 42 by a transport apparatus 30. The processing apparatus 40 processes the disk-shaped substrate 100, for example, while the disk-shaped substrate 100 is placed on the table 42. As shown in FIG. 9, for example, a polishing apparatus including a table 42 as a lower surface plate and an upper surface plate 44 can be used as the processing apparatus 40. In the polishing apparatus, for example, the disk-shaped substrate 100 is accommodated in each of a plurality of accommodation holes 48 in a plate-shaped carrier 47 disposed between the table 42 and the upper surface plate 44. Then, for example, by rotating the carrier 47, the table 42, and the upper surface plate 44, the disk-shaped substrate 100 rotates relative to the table 42 and the upper surface plate 44, and each of the first surface 100J and the second surface 100K of the disk-shaped substrate 100 is polished.

[0054] The relative positional relationship of the plurality of accommodating holes 48 in the carrier 47 is the same as the relative positional relationship of the plurality of positioning parts 12 in the support body 14. The relative positional relationship of the plurality of accommodating holes 48 and the relative positional relationship of the plurality of positioning parts 12 may be misaligned within a range in which the plurality of disk-shaped substrates 100 can be accommodated in the accommodating holes 48 while maintaining the relative positional relationship in the positioning parts 12, and is not limited to being completely identical. In this embodiment, for example, the disk-shaped substrates 100 positioned by the plurality of positioning parts 12 by the transport device 30 are accommodated in the plurality of accommodating holes 48 in the carrier 47 while maintaining the relative positional relationship.

[0055] <Modification of the processing device 40> The processing apparatus of the present disclosure is not limited to a polishing apparatus. For example, the processing apparatus of the present disclosure may be a grinding apparatus that grinds a disk-shaped substrate. Furthermore, the processing apparatus of the present disclosure may be an apparatus that performs other processing on a table, as long as it is an apparatus that can process a disk-shaped substrate.

[0056] <Modification of Manufacturing Apparatus 90> As shown in FIG. 2, the manufacturing apparatus 90 may include a transport device 80 that transports the disk-shaped substrate 100 to the positioning unit 12 of the positioning device 10. The transport device 80 has, for example, a plurality of holding units 82 that hold the disk-shaped substrate 100 by pressing them against the inner periphery 100A of the disk-shaped substrate 100 at multiple locations. For example, three holding units 82 are provided along the circumferential direction of the disk-shaped substrate 100. In this transport device 80, the disk-shaped substrate 100 is transported to the positioning unit 12 by moving the holding units 82 to the table 20 of the positioning unit 12 while the holding units 82 are holding the disk-shaped substrate 100. At this time, for example, three holding units 82 are positioned in the space 22. As a result, the disk-shaped substrate 100 is positioned above the upper surface of the table 20 with the three contact units 21 inserted into the inner periphery 100A of the disk-shaped substrate 100.

[0057] According to the above-described configuration in which the holding portion 82 is pressed against the inner circumference 100A of the disk-shaped substrate 100 at multiple points to hold the disk-shaped substrate 100, it is possible to hold the disk-shaped substrate 100 even when the first surface 100J and the second surface 100K of the disk-shaped substrate 100 are wet.

[0058] The manufacturing apparatus 90 may further include one or more other devices necessary for manufacturing the disk-shaped substrates, such as a storage rack for storing disk-shaped substrates before or after processing, a cleaning device for cleaning the disk-shaped substrates, a drying device for drying the disk-shaped substrates, etc.

[0059] <Method of manufacturing the disk-shaped substrate 200> An example of the method for manufacturing a disk-shaped substrate according to the present disclosure will be described below with reference to the drawings. However, the method for manufacturing a disk-shaped substrate according to the present disclosure is not limited to the following example.

[0060] The manufacturing method of this embodiment is a method for manufacturing a disk-shaped substrate 200. The manufacturing method of this embodiment includes a first transfer step, a positioning step, a second transfer step, and a processing step. In the manufacturing method of this embodiment, the first transfer step, the positioning step, the second transfer step, and the processing step are performed in this order. The manufacturing method of this embodiment can be performed, for example, by using the above-mentioned manufacturing apparatus 90. In this case, for example, before performing the first transfer step, the manufacturing apparatus 90 including the positioning apparatus 10, the conveying apparatus 30, and the processing apparatus 40 is prepared.

[0061] <First conveying process> The first transport step is a step of transporting the disk-shaped substrate 100 to the positioning device 10. In the first transport step, for example, the disk-shaped substrate 100 accommodated in a storage unit (not shown) is held by a holding unit, and the holding unit is moved to remove the disk-shaped substrate 100 from the storage unit.

[0062] Next, in the first transfer step, the holding unit holding the disk-shaped substrate 100 is moved to the positioning device 10, and the disk-shaped substrate 100 is transferred to the positioning device 10. Next, in the first transfer step, the holding unit is lowered toward the positioning unit 12, and the disk-shaped substrate 100 is placed on the table 20 while inserting the contact unit 21 into the inner periphery 100A of the disk-shaped substrate 100. The disk-shaped substrate 100 placed on the table 20 is supported by the support unit 23, as shown in FIG.

[0063] In the first transport step, transport of the disk-shaped substrates 100 is repeated until a disk-shaped substrate 100 is placed on the table 20 of all the positioning units 12. Note that in the first transport step, for example, a predetermined number of disk-shaped substrates 100 may be taken out of the storage unit and transported to the positioning device 10. The predetermined number may be, for example, multiple substrates.

[0064] <Positioning process> The positioning step is a step of bringing the positioning portion 12 into contact with the inner periphery 100A of each of the plurality of disk-shaped substrates 100 to position the disk-shaped substrates 100 before transporting them to a predetermined position on the stage 42 of the processing device 40. In the positioning step, the disk-shaped substrate 100 placed on the stage 20 is positioned in a direction along the radial direction of the disk-shaped substrate 100.

[0065] In this way, in the positioning step, the positioning portion 12 is brought into contact with the inner periphery 100A of the disk-shaped substrate 100, so even if the outer diameter of the disk-shaped substrate 100 to be positioned changes, the disk-shaped substrate 100 can be positioned without replacing the positioning portion 12. This prevents a decrease in the efficiency of the positioning process in the positioning step. As a result, a decrease in productivity in the manufacturing method of the disk-shaped substrate 200 is prevented.

[0066] 2 and 3, in the positioning step, for example, the disk-shaped substrate 100 is positioned in two different directions along the radial direction of the disk-shaped substrate 100. In other words, in the positioning step of this embodiment, movement of the disk-shaped substrate 100 in two different directions along the radial direction is restricted. This suppresses misalignment of the disk-shaped substrate 100 on the base 20. The two different directions are, for example, two directions that are perpendicular to each other, and can be understood as, for example, the Y direction and the X direction in FIG.

[0067] Furthermore, in the positioning step of this embodiment, the disk-shaped substrate 100 is positioned in the thickness direction of the disk-shaped substrate 100. This prevents the disk-shaped substrate 100 from being displaced in the thickness direction.

[0068] In the positioning step of this embodiment, the positioning part 12 is brought into contact with the inner periphery 100A of the disk-shaped substrate 100 at a plurality of positions in the circumferential direction. Specifically, in the positioning step of this embodiment, the positioning part 12 is brought into contact with the inner periphery 100A of the disk-shaped substrate 100 at three positions in the circumferential direction. This prevents the disk-shaped substrate 100 from shifting out of position on the base 20.

[0069] In the positioning step of this embodiment, the positioning unit 12 positions the disk-shaped substrate 100 without contacting the outer periphery 100B. As a result, even if the outer diameter of the disk-shaped substrate to be positioned changes, the disk-shaped substrate 100 can be placed on the base 20, so there is no need to replace the positioning unit 12. As a result, a decrease in the efficiency of the positioning process in the positioning step is suppressed. The positioning step of this embodiment can be performed by using the positioning device 10 described above.

[0070] <Modification of the positioning process> In the positioning step of this embodiment, the disk-shaped substrate 100 is positioned in two perpendicular directions along the radial direction of the disk-shaped substrate 100, but this is not limited to this. In the positioning step of this embodiment, for example, the disk-shaped substrate 100 may be positioned in two directions along the radial direction of the disk-shaped substrate 100 that intersect at an angle of less than 90 degrees. Furthermore, in the positioning step of this embodiment, for example, the disk-shaped substrate 100 may be positioned in one direction along the radial direction of the disk-shaped substrate 100.

[0071] In the positioning step of this embodiment, the positioning units 12 are brought into contact with the inner circumference 100A of the disk-shaped substrate 100 at three circumferential positions to position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100, but this is not limited to this. In the positioning step of this embodiment, the positioning units 12 may be brought into contact with the inner circumference 100A of the disk-shaped substrate 100 at three or more circumferential positions to position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100. Furthermore, in the positioning step of this embodiment, the positioning units 12 may be brought into contact with the inner circumference 100A of the disk-shaped substrate 100 at one or two circumferential positions to position the disk-shaped substrate 100 in a direction along the radial direction of the disk-shaped substrate 100.

[0072] In the positioning step of this embodiment, the disk-shaped substrate 100 is positioned in the radial direction and thickness direction of the disk-shaped substrate 100, but this is not limitative. In the positioning step, it is sufficient to position the disk-shaped substrate 100 at least in the radial direction of the disk-shaped substrate 100.

[0073] The positioning step of this embodiment can be performed using the positioning device 10 described above, but may also be performed without using the positioning device 10 described above. The positioning step of this embodiment may be performed as an example of the positioning method of the present disclosure. When the positioning step of this embodiment is performed as a positioning method, it may be performed as a stand-alone step.

[0074] <Second conveying process> The second transfer step of this embodiment is a step of transferring the disk-shaped substrate 100 positioned in the positioning step to a predetermined position on the platform 42 while maintaining the relative positional relationship between the multiple disk-shaped substrates 100. The second transfer step starts transferring the disk-shaped substrate 100 after, for example, preparation for executing the processing step is completed in the processing device 40. The second transfer step of this embodiment can be performed, for example, by using the transfer device 30 described above.

[0075] In the second conveying step of this embodiment, for example, as shown in Figure 6, the holding portion 32 holds the disk-shaped substrate 100 by contacting and adsorbing the suction portion 33 to the disk-shaped substrate 100 positioned by the positioning device 10. Next, in the second transport process of this embodiment, while the holding unit 32 holds the disk-shaped substrate 100, the moving mechanism 34 moves the holding unit 32, for example, in a predetermined moving direction, as shown in Figure 7, thereby transporting the disk-shaped substrate 100 to a predetermined position on the table 42 of the processing device 40.

[0076] Then, in the second transfer step of this embodiment, the suction by the holder 32 is released, and the disk-shaped substrate 100 is placed at a predetermined position on the stage 42 of the processing device 40. As a result, in the second transfer step of this embodiment, the plurality of disk-shaped substrates 100 are transferred to predetermined positions on the stage 42 of the processing device 40 while maintaining the relative positional relationship between the plurality of disk-shaped substrates 100, as shown in FIG.

[0077] <Modification of the second conveying step> In the second transport step of the present embodiment, the disk-shaped substrate 100 positioned by the positioning device 10 is transported to a predetermined position on the stage 42 of the processing device 40 while maintaining the relative positional relationship between the plurality of disk-shaped substrates 100, but this is not limited to this. In the second transport step of the present disclosure, for example, the plurality of disk-shaped substrates 100 may be transported while changing the relative positions of the plurality of disk-shaped substrates 100. In addition, in the second transport step of the present disclosure, for example, the plurality of disk-shaped substrates 100 may be transported one by one.

[0078] In the second transfer step of the present embodiment, the disk-shaped substrate 100 is held by the suction unit 33, but this is not limiting. For example, the second transfer step of the present disclosure may use a holding unit that holds the disk-shaped substrate 100 by pressing it against at least one of the inner circumference 100A and the outer circumference 100B of the disk-shaped substrate 100. Furthermore, the second transport step of this embodiment can be performed using the transport device 30 described above, but may also be performed without using the transport device 30 .

[0079] <Processing process> In the processing step of this embodiment, processing is performed on the disk-shaped substrate 100 that has been transferred onto the table 42 in the second transfer step. Processing is performed on the disk-shaped substrate 100 that has been transferred onto the table 42 while it is placed on the table 42. Examples of such processing include polishing. This processing step can be performed, for example, by using the processing device 40 described above.

[0080] <Modification of the processing process> The processing performed in this processing step is not limited to polishing. For example, grinding may be used. Furthermore, the processing may be other processing performed on the stage 42, as long as it is processing performed on the disk-shaped substrate 100. Furthermore, this processing step can be performed using the processing device 40 described above, but may also be performed without using the processing device 40.

[0081] <Modification of manufacturing method> The method for manufacturing a disk-shaped substrate according to the present disclosure is not limited to the above-mentioned example, and may be any method that includes at least a positioning step, a transport step, and a processing step. In the present disclosure, the method for manufacturing the disk-shaped substrate 200 may include one or more other commonly known processes required for manufacturing the disk-shaped substrate 200 depending on the type of the disk-shaped substrate 200 .

[0082] For example, in the case of an aluminum substrate, the method for manufacturing the disk-shaped substrate 200 includes the following steps. Blank substrate preparation step: An aluminum alloy ingot is rolled to obtain an aluminum alloy plate material with a thickness of approximately 2 mm or less, and the obtained aluminum alloy plate material is punched into a disk shape to prepare an aluminum substrate of the desired dimensions. Cutting step: The prepared aluminum alloy substrate is subjected to chamfering of the inner and outer diameters and cutting of both main surfaces. Grinding process: In order to reduce the surface roughness and waviness of the aluminum alloy substrate after cutting, grinding is performed on both main surfaces of the aluminum alloy substrate using a grinding wheel. Plating process: After grinding, the surface of the aluminum alloy substrate is plated with NiP or other plating to impart surface hardness and reduce surface defects. Polishing step: Both main surfaces of the aluminum alloy substrate on which the plating film has been formed are polished. In the case of an aluminum substrate, the manufacturing method according to this embodiment may be carried out in, for example, either the grinding step or the polishing step, or in both steps.

[0083] In the case of a glass substrate, the method for manufacturing the disk-shaped substrate 200 includes, for example, the following steps. Blank substrate preparation process: A glass blank, which will be the material for a plate-shaped glass substrate for a magnetic recording medium and has a pair of main surfaces, is produced by press molding, and a circular hole is formed in the center of the produced glass blank to form a ring shape. Next, the glass blank is shaped to obtain a glass substrate with a chamfered surface. The inner and outer peripheral end surfaces of the shaped glass substrate are ground and polished. Grinding process: The main surfaces of the glass substrate after edge polishing are ground using fixed abrasive grains. Polishing step: The main surfaces of the glass substrate after the grinding step are polished with a predetermined abrasive. During the polishing step, the glass substrate may be subjected to a chemical strengthening treatment. In the case of a glass substrate, the manufacturing method according to this embodiment may be carried out in, for example, either the grinding step or the polishing step, or in both steps. [Explanation of symbols]

[0084] 10 Positioning device 12 Positioning part 20 units 21 Contact part 30 Conveyor device 40 Processing equipment 42 units 90 Manufacturing equipment 100 disc-shaped substrate 100A inner circumference 100B outer circumference 100C hole 200 disc-shaped substrate

Claims

1. a disk-shaped substrate having an inner periphery and a hole surrounded by the inner periphery is placed on a table, and a contact portion inserted into the hole from the table side is brought into contact with the inner periphery, thereby positioning the disk-shaped substrate in a direction along the radial direction of the disk-shaped substrate before transporting it to a predetermined position of a processing device; Positioning method.

2. The disk-shaped substrate is positioned in a thickness direction of the substrate. The positioning method according to claim 1 .

3. the contact portion is brought into contact with the inner periphery of the disk-shaped substrate at a plurality of positions in the circumferential direction. The positioning method according to claim 1 .

4. the positioning unit including the contact portion positions the disk-shaped substrate having an outer periphery in a non-contact state with respect to the outer periphery; The positioning method according to claim 1 .

5. a positioning step of placing a plurality of disk-shaped substrates, each having an inner periphery and a hole surrounded by the inner periphery, on a table, and positioning each of the plurality of disk-shaped substrates in a direction along the radial direction of the disk-shaped substrates by bringing contact portions inserted into the holes from the table side into contact with the inner periphery; a transport step of transporting the positioned disk-shaped substrate to a predetermined position of a processing device while maintaining the relative positional relationship of the plurality of disk-shaped substrates; a processing step of processing the disk-shaped substrate transported to the predetermined position; A method for manufacturing a disk-shaped substrate comprising:

6. a base on which a disk-shaped substrate having an inner periphery and a hole surrounded by the inner periphery is placed; a contact portion that is provided on the table so as to be insertable into the hole, and that contacts the inner periphery to position the disk-shaped substrate in a direction along the radial direction of the disk-shaped substrate before the disk-shaped substrate is transported to a predetermined position in a processing device; A positioning device comprising:

7. a positioning device including: a table on which a plurality of disk-shaped substrates, each having an inner periphery and a hole surrounded by the inner periphery, are placed; and a contact portion provided on the table so as to be insertable into the hole, the contact portion contacting the inner periphery to position each of the plurality of disk-shaped substrates in a direction along the radial direction of the disk-shaped substrate; a processing device that processes the disk-shaped substrate; a transport device that transports the plurality of disk-shaped substrates to a predetermined position in the processing device while maintaining the relative positional relationship of the disk-shaped substrates; An apparatus for manufacturing a disk-shaped substrate comprising:

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