WO2022270229A1 - ロール製造方法、ロール製造装置、ロールおよび転写物 - Google Patents
ロール製造方法、ロール製造装置、ロールおよび転写物 Download PDFInfo
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- WO2022270229A1 WO2022270229A1 PCT/JP2022/021797 JP2022021797W WO2022270229A1 WO 2022270229 A1 WO2022270229 A1 WO 2022270229A1 JP 2022021797 W JP2022021797 W JP 2022021797W WO 2022270229 A1 WO2022270229 A1 WO 2022270229A1
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- roll
- cutting
- cutting blade
- radial direction
- cut
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
- B29C33/424—Moulding surfaces provided with means for marking or patterning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/02—Milling surfaces of revolution
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
- B29C59/046—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts for layered or coated substantially flat surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/00317—Production of lenses with markings or patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00009—Production of simple or compound lenses
- B29D11/0048—Moulds for lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2011/00—Optical elements, e.g. lenses, prisms
- B29L2011/0016—Lenses
Definitions
- the present disclosure relates to roll manufacturing methods, roll manufacturing apparatuses, rolls, and transfer materials.
- Microlens arrays in which a large number of microlenses are arranged two-dimensionally, are used in various applications such as diffusion plates, diffusion sheets, and head-up display screens.
- a pattern that is the inverse of the standard pattern of the microlens array (hereinafter referred to as a "transfer pattern") is formed on the surface of the mold, and the resin coated on the substrate is coated with the pattern.
- transfer pattern a pattern that is the inverse of the standard pattern of the microlens array
- a desired microlens array can be manufactured by cutting the cured resin as necessary.
- a roll mold with a transfer pattern formed on the surface of a cylindrical or columnar roll is used, and by using the roll-to-roll method, microlenses can be produced with high mass productivity and high quality uniformity. Arrays can be manufactured.
- Patent Literature 1 describes a technique for cutting a roll surface by reciprocating a cutting blade in the radial direction of the roll while rotating the roll.
- Patent Document 2 describes a technique for cutting a roll surface by rotating the electric spindle with a ball end mill attached to the tip of the electric spindle, and cutting the surface of the roll with the rotating ball end mill. It is
- burrs When a roll is cut to form a pattern for transfer, projections called burrs may occur on the surface of the roll due to cutting. It is known that transfer using a transfer pattern with burrs results in the transfer of a burr-containing shape that is different from the desired microlens array pattern, leading to deterioration in the quality of the manufactured microlens array. . In particular, it is known that when the height difference of the unevenness of the transfer pattern exceeds 20 ⁇ m, the generated burrs adversely affect the optical performance of the microlens array.
- the incident angle ⁇ which is the inclination of the wall surface of the recess with respect to the surface of the roll 1 at the open end of the recess, cannot be greater than the tool clearance angle.
- the cutting edge 100 has a tool clearance angle of about 40°. Therefore, when cutting the roll 1 using the cutting blade 100, it is difficult to set the incident angle of the cutting hole to 40° or more.
- Patent Document 2 has the problem that it takes an enormous amount of time to process because the holes are formed one by one by NC (Numerical Control) control.
- the object of the present disclosure which has been made in view of the above problems, is to form a cut hole by accurately cutting the same cut portion of the roll multiple times while suppressing an increase in processing time, and the incident angle is
- An object of the present invention is to provide a roll manufacturing method, a roll manufacturing apparatus, a roll, and a transfer material capable of forming larger cut holes.
- a roll manufacturing method comprises a rotating device including a rotary encoder that rotates a cylindrical or columnar roll in the circumferential direction and outputs a signal corresponding to the rotational position of the roll, and a radial direction of the roll.
- a cutting tool stage that holds a spindle part that can reciprocate in and is movable in the radial direction of the roll, and the spindle part is provided with a cutting blade that can rotate about the radial direction of the roll as a rotation axis 1.
- a roll manufacturing apparatus includes a rotating device that rotates a cylindrical or columnar roll in a circumferential direction and that includes a rotary encoder that outputs a signal corresponding to the rotational position of the roll, and a radial direction of the roll.
- a spindle portion equipped with a cutting blade rotatable with a rotation axis is held so as to be reciprocally movable in the radial direction of the roll, and a cutting tool stage movable in the radial direction of the roll, and output from the rotary encoder a signal generator for generating a control waveform representing a movement pattern of the cutting blade for reciprocating the cutting blade in the radial direction of the roll at a position corresponding to a predetermined cutting portion on the surface of the roll, based on the signal;
- a control unit for moving the cutting tool stage in the radial direction of the roll so as to rotate.
- a roll according to one embodiment is a cylindrical or columnar roll having a surface made of a metal or an alloy, and a plurality of recesses are formed in an array on the surface of the roll.
- a transfer product includes a transfer surface obtained by transferring the surface shape of the roll described above to a curable resin and curing the transfer surface.
- FIG. 2 is a diagram showing another example of the configuration of the cutting blade shown in FIG. 1;
- FIG. 3 is a view showing still another example of the configuration of the cutting blade shown in FIG. 1;
- FIG. 3 is a view showing still another example of the configuration of the cutting blade shown in FIG. 1;
- FIG. 3 is a view showing still another example of the configuration of the cutting blade shown in FIG. 1;
- FIG. 2B is a view showing a cut hole formed by the cutting blade shown in FIG. 2A;
- FIG. 2C is a view showing a cut hole formed by the cutting blade shown in FIG. 2B;
- FIG. 2D is a view showing a cut hole formed by the cutting blade shown in FIG. 2C;
- Figure 2d shows a cut hole formed by the cutting blade shown in Figure 2d;
- FIG. 2E shows a cut hole formed by the cutting blade shown in FIG. 2E;
- 2 is a diagram for explaining generation of a control waveform by a signal generator shown in FIG. 1;
- FIG. It is a figure which shows an example of the arrangement pattern of the cutting hole formed in a roll.
- 2 is a flow chart showing an example of the operation of the roll manufacturing apparatus shown in FIG. 1;
- 2 is a flowchart for explaining a roll manufacturing method by the roll manufacturing apparatus shown in FIG. 1;
- FIG. 10 is a view of the surface of a transfer material obtained by transferring a surface pattern of a roll having holes formed by a processing method that does not use a cutting blade.
- FIG. 10 is a view of the surface of a transfer material obtained by transferring a surface pattern of a roll having cut holes formed by a rotating cutting blade.
- FIG. 4 is a diagram showing an example of control waveforms;
- FIG. 10 is a diagram showing another example of control waveforms; It is the figure which image
- FIG. 1 is a diagram showing a configuration example of a roll manufacturing apparatus 10 according to one embodiment of the present invention.
- a roll manufacturing apparatus 10 cuts a cylindrical or columnar roll 1, and manufactures a roll 1 on which, for example, a pattern (transfer pattern) that is a reverse shape of a reference pattern of a microlens array is formed. It is a device.
- the patterned roll 1 is used, for example, as a roll mold for producing a transfer product such as a microlens array.
- a roll manufacturing device 10 shown in FIG. 10 A roll manufacturing device 10 shown in FIG.
- the rotating device 11 supports the cylindrical or columnar roll 1 from the axial direction and rotates the roll 1 in the circumferential direction.
- the roll 1 is made of metal such as SUS (Steel Use Stainless) as a base material, for example.
- the surface of the roll 1 is plated with a free-cutting plating such as Ni—P or Cu. That is, the surface of the roll 1 is made of metal or alloy.
- the roll 1 is not limited to plating, and may be made of a free-cutting material such as pure copper or aluminum.
- the rotating device 11 includes a rotary encoder 11a.
- the rotary encoder 11 a outputs a signal corresponding to the rotational position of the roll 1 to the signal generator 15 .
- the signals corresponding to the rotational position of the roll 1 include a trigger signal output each time the rotational position of the roll 1 reaches a predetermined reference position in one rotation, and a pulse signal output each time the roll 1 rotates a predetermined amount. including.
- the spindle portion 12 rotatably holds a cutting edge 12a for cutting the roll 1. Specifically, the spindle portion 12 holds the cutting blade 12a so that the cutting blade 12a can rotate about the radial direction of the roll 1 as a rotation axis.
- the cutting edge 12a is made of a hard material such as a ceramic tip, a diamond tip, or a cemented carbide tip.
- 2A to 2E are diagrams showing examples of the shape of the cutting edge 12a.
- 2A to 2E show a front view of the tip of the cutting blade 12a viewed from the front (viewed along the rotation axis of the cutting blade 12a) and a side view of the cutting blade 12a (viewed from the side of the cutting blade 12a). (seen) shows a side view and
- the tip of the cutting blade 12a has an R-shaped (curved in an arc) shape in a side view.
- a hemispherical cutting hole with an R-shaped bottom surface can be formed as shown in FIG. 3A.
- the tip of the cutting blade 12a has, for example, an angular shape as shown in FIG. 2B.
- a cylindrical cutting hole with a flat bottom surface can be formed as shown in FIG. 3B.
- the tip of the cutting blade 12a has a trapezoidal shape, for example, as shown in FIG. 2C.
- a frustum-shaped cutting hole can be formed as shown in FIG. 3C.
- the tip of the cutting blade 12a has, for example, a conical shape, as shown in FIG. 2D.
- a conical cutting hole can be formed as shown in FIG. 3D.
- the tip of the cutting edge 12a has a shape with different heights on both side surfaces, for example, as shown in FIG. 2E.
- the tip of the cutting edge 12a has a shape with different heights on both side surfaces, for example, as shown in FIG. 2E.
- the PZT stage 13 holds a spindle section 12 with a cutting edge 12a.
- the PZT stage 13 includes a PZT (lead zirconate titanate) piezoelectric element.
- the PZT piezoelectric element expands and contracts according to the voltage level of the drive signal, thereby reciprocating the spindle section 12 in the radial direction of the roll 1 . Therefore, the spindle portion 12 and the cutting blade 12 a held by the spindle portion 12 can reciprocate in the radial direction of the roll 1 by the PZT stage 13 .
- the driving means for driving the spindle portion 12 is not limited to the PZT piezoelectric element.
- the cutting tool stage 14 holds the PZT stage 13 and moves in the cutting axis direction (the radial direction of the roll 1) and the feed axis direction (the axial direction of the roll 1). As the cutting tool stage 14 moves, the PZT stage 13 and the spindle section 12 held by the cutting tool stage 14 also move in the cutting axis direction and the feed axis direction. While rotating the roll 1, the cutting edge 12a rotated by the spindle portion 12 is reciprocated by the PZT stage 13 in the radial direction of the roll 1 to cut the roll 1, and the PZT stage 13 is moved in the axial direction of the roll 1. By doing so, the cut holes can be formed over the entire surface of the roll 1 .
- the signal generation unit 15 Based on the signal output from the rotary encoder 11a, the signal generation unit 15 generates a control waveform representing the movement pattern of the cutting blade 12a, which reciprocates the cutting blade 12a at a position corresponding to a predetermined cutting location on the surface of the roll 1. Generate. Generation of control waveforms by the signal generator 15 will be described with reference to FIG.
- the rotary encoder 11a outputs a trigger signal each time the rotational position of the roll 1 reaches a predetermined reference position in one rotation. Specifically, the rotary encoder 11a outputs, as a trigger signal, a pulse signal that rises each time the rotational position of the roll 1 reaches a predetermined reference position in one rotation, for example, as shown in FIG. 4, the rotary encoder 11a outputs a pulse signal which rises each time the roll 1 rotates by a predetermined amount. The rotary encoder 11a outputs, as a pulse signal, a pulse signal that rises for each rotation amount obtained by dividing one rotation of the roll 1 by 1,440,000, for example.
- the signal generator 15 counts pulse signals based on the output timing of the trigger signal (the timing at which the trigger signal rises). Then, the signal generator 15 generates a control waveform according to the count number of pulse signals, as shown in FIG.
- the rotational position of the roll 1 from a predetermined reference position can be specified. Therefore, by generating a control waveform according to the count number of pulse signals based on the output timing of the trigger signal, it is possible to accurately and repeatedly cut a predetermined cutting portion of the roll 1 .
- FIG. 5 is a diagram showing an example of an arrangement pattern of cut holes cut in the roll 1.
- a rhombus in which one side and another opposite side are parallel to the axial direction and the other two sides are inclined by about 30 degrees to the circumferential direction are continuously arranged in the axial direction and the circumferential direction.
- the cutting holes are centered around the four vertices of each rhombus.
- the two cut holes centered on both ends of the axially parallel sides partially overlap.
- the two cut holes centered on both ends of the side inclined in the circumferential direction partially overlap.
- the distance between the centers of two cut holes adjacent in the circumferential direction is, for example, 2 ⁇ 3*A ⁇ m.
- the distance between the centers of two axially adjacent cut holes is, for example, 2*A ⁇ m.
- the distance between the centers of the two cut holes centered on both ends of the side inclined in the circumferential direction is, for example, 2*A ⁇ m.
- the signal generator 15 generates a control waveform that forms cut holes in the roll 1 according to the arrangement pattern of the cut holes described with reference to FIG. That is, the signal generator 15 generates a control waveform that causes the cutting blade 12a to cut the roll 1 at the rotational position of the roll 1 corresponding to the position of each cutting hole.
- the control unit 16 cuts the roll 1 by reciprocating the cutting blade 12a in the radial direction of the roll 1 according to the control waveform generated by the signal generation unit 15 . Specifically, the control unit 16 reciprocates the spindle unit 12 (cutting blade 12a) in the radial direction of the roll 1 based on the control waveform. Furthermore, the control unit 16 performs cutting so that the cutting process of cutting one or more times at a predetermined cutting depth by the spindle unit 12 (cutting blade 12a) that reciprocates a predetermined cutting location of the roll 1 is performed multiple times. The tool stage 14 is moved in the radial direction of the roll 1 . By doing so, the roll 1 is cut to a predetermined depth by the reciprocating cutting blade 12a. The depth of cutting and the number of times of cutting in each cutting process are input in advance to the control unit 16, for example. The controller 16 generates a drive signal for driving the PZT stage 13 and outputs it to the amplifier 17 .
- An example is a case where a cut hole is formed by a cutting step of cutting x times at a cutting depth d1 and a cutting step of cutting y times at a cutting depth d2.
- the control unit 16 drives the PZT stage 13 to reciprocate the cutting blade 12a in the radial direction of the roll 1 according to the control waveform. Then, the control unit 16 sequentially moves the cutting tool stage 14 so that the reciprocating cutting blade 12a cuts the roll 1 x times to the cutting depth d1. Next, the control unit 16 sequentially moves the cutting tool stage 14 so that the reciprocating cutting edge 12a cuts the roll 1 y times to the cutting depth d2.
- the amplification section 17 amplifies the drive signal output from the control section 16 and outputs it to the PZT stage 13 .
- the PZT stage 13 is driven by the amplified drive signal, and the spindle portion 12 (cutting blade 12a) reciprocates in the radial direction of the roll 1, thereby cutting the roll 1. As shown in FIG.
- a control waveform is generated based on the signal output from the rotary encoder 11a, and the spindle portion 12 (the cutting blade 12a rotated by the spindle portion 12) is reciprocated based on the control waveform.
- the incident angle ⁇ which is the inclination of the wall surface of the cutting hole, has a limitation that it cannot be greater than the tool clearance angle of the cutting edge 100 .
- the cutting blade 12a that rotates about the radial direction of the roll 1 is used to cut the roll 1, there is no such limitation. Therefore, a cut hole (concave portion) having a larger incident angle ⁇ can be formed.
- cutting locations are determined according to the number of counts of pulse signals based on the output timing of the trigger signal, and cutting is performed sequentially, so an increase in machining time can be suppressed.
- the same cut portion of the roll 1 is accurately cut a plurality of times to form cut holes, and the incident angle is increased. Large cut holes can be formed.
- the roll 1 manufactured by the roll manufacturing apparatus 10 is used as a mold (roll mold) for manufacturing a transfer product having a hardened transfer surface, such as a microlens array, by transferring the surface shape of the roll 1 to a curable resin.
- a mold roll mold
- a transcript can be produced, for example, as follows.
- An uncured curable resin for example, an acrylic UV curable resin
- a substrate made of PET Polyethyleneterephthalate
- the manufactured roll mold is pressed against the formed curable resin layer, and in this state, the curable resin layer is irradiated with UV light to cure the curable resin layer.
- the curable resin layer After curing the curable resin layer, by peeling the cured curable resin layer from the roll mold, it is possible to manufacture a transfer product having a transfer surface in which the surface shape of the roll 1 is transferred to the curable resin.
- FIG. 6 is a flow chart showing an example of the operation of the roll manufacturing device 10 according to this embodiment.
- the roll 1 is placed on the rotating device 11 (step S101).
- step S102 the roll 1 is flattened to flatten the plated layer on the surface of the roll 1 (step S102).
- the PZT stage 13 is set on the cutting tool stage 14, and the spindle section 12 is set on the PZT stage 13 (step S103).
- the cutting edge 12a is set on the spindle portion 12 (step S104).
- step 105 the rotational speed of the spindle section 12 is set.
- step S106 the rotation of the spindle section 12 is started.
- the cutting edge 12a held by the spindle portion 12 also rotates.
- step S107 the rotation speed (roll rotation speed) of the roll 1 by the rotation device 11 is set (step S107), and the rotation device 11 starts rotating the roll 1 at the set roll rotation speed (step S108).
- the position of the cutting tool stage 14 is set to the start position in the feed axis direction and the start position in the cutting axis direction (steps S109 and S110), and the cutting tool stage 14 starts driving (step S111).
- the rotating cutting blade 12a reciprocates in the radial direction of the roll 1, thereby cutting the roll 1 (step S112).
- the cutting tool stage 14 is moved to the end position in the direction of the feed axis, and the cutting process of cutting a predetermined cutting location to a predetermined cutting depth is repeated multiple times to complete the cutting of the cutting hole (step S113).
- step S114 When the cutting blade 12a wears and needs to be replaced, the cutting blade 12a is replaced (step S114) and the cutting blade 12a is positioned (step S115). The process is repeated.
- the signal generation unit 15 moves the cutting blade 12a in the radial direction of the roll 1 at a position corresponding to a predetermined cutting portion on the surface of the roll 1 based on a signal corresponding to the rotational position of the roll 1 output from the rotary encoder 11a.
- a control waveform for reciprocating movement is generated (step S201).
- the control unit 16 reciprocates the cutting blade 12a rotating about the radial direction of the roll 1 as a rotation axis in the radial direction of the roll 1 according to the control waveform generated by the signal generating unit 15 . Further, the control unit 16 moves the cutting tool stage 14 so that the cutting step of cutting one or more times with a predetermined cutting depth by the cutting edge 12a that reciprocates a predetermined cutting portion of the roll 1 is performed multiple times. Move in the radial direction of the roll 1 . (Step S202).
- control unit 16 generates a drive signal for the PZT stage 13 that causes the spindle unit 12 (cutting blade 12a) to move in the radial direction of the roll 1 according to the control waveform, and outputs the drive signal to the amplifier unit 17 .
- the control unit 16 also moves the cutting tool stage 14 in the radial direction of the roll 1 so that the roll 1 is cut to a predetermined cutting depth and number of times in the cutting process.
- the cutting edge 12a is reciprocated in the radial direction of the roll 1 at a position corresponding to a predetermined cut portion on the surface of the roll 1 based on the signal output from the rotary encoder 11a.
- a control waveform is generated based on the signal output from the rotary encoder 11a, and the rotating cutting blade 12a is reciprocated based on the control waveform to cut the roll 1, thereby accurately cutting a predetermined cutting portion. can. Therefore, even if the cutting step of cutting one or more times at a predetermined cutting depth is repeated multiple times, the same cutting portion can be accurately cut.
- cutting locations are determined according to the number of counts of pulse signals based on the output timing of the trigger signal, and cutting is performed sequentially, so an increase in machining time can be suppressed.
- the same cut portion of the roll is accurately cut a plurality of times to form cut holes, and cutting with a larger incident angle Pores can be formed.
- Example 1 A roll having a surface of SUS304 plated with Ni—P was prepared. The roll diameter was 130 mm and the roll length was 250 mm.
- the prepared roll was placed on the roll manufacturing apparatus according to this embodiment, and the Ni—P plated layer on the surface of the roll was flattened.
- a cut hole was formed by cutting the roll after flattening.
- the rotation speed of the roll was set to 0.1 min-1, and the cutting depth of the roll was set to 13.0 ⁇ m.
- the curvature of the cut hole was set to 50 ⁇ m.
- the number of revolutions of the spindle was 160000 min-1.
- the arrangement of the cut holes was arranged according to the arrangement pattern shown in FIG. As a result, a plurality of cut holes (recesses) were formed in an array, and as shown in FIG. 3A, a roll was manufactured in which the wall surfaces of the cut holes formed part of a spherical body (hemisphere).
- Example 2 In this example, the cutting depth was set to 20 ⁇ m. Other conditions were the same as in Example 1.
- Example 3 In this example, the cutting depth was set to 27.5 ⁇ m, and the curvature of the cut hole was set to 100 ⁇ m. Other conditions were the same as in Example 1.
- Comparative example 1 In this comparative example, the same processing as in Example 1 was performed using a general processing machine that cuts the roll one by one using NC control with a rotating cutting blade.
- Comparative example 2 In this comparative example, the same processing as in Example 1 was performed using the general processing machine described above.
- Comparative Example 3 In this comparative example, the same processing as in Example 3 was performed using the general processing machine described above.
- Example 1-3 and Comparative Example 1-3 the processing time required to form one round of cut holes in the roll was measured. Also, the incident angles of the cut holes formed in the rolls were measured in each of Example 1-3 and Comparative Example 1-3. In both Example 1-3 and Comparative Example 1-3, cut holes were formed with the set cutting depth and curvature.
- Table 1 shows the machining time and the incident angle of the cut hole in Example 1-3 and Comparative Example 1-3.
- Example 1-3 the processing time was shortened by about 1/10 to 1/16 as compared with Comparative Example 1-3. Therefore, according to this embodiment, it was confirmed that an increase in processing time can be suppressed.
- FIG. 8A shows the surface of a transfer material obtained by transferring the surface pattern of the roll 1 in which holes are formed without cutting with a cutting blade
- FIG. FIG. 2 is a view of the surface of a transfer material on which the surface pattern of the rolled roll 1 is transferred, taken by SEM (Scanning Electron Microscope).
- FIG. 8A no cutting marks were observed on the surface of the roll 1 and the transferred material obtained by transferring the surface pattern of the roll 1 when cutting was not performed with the cutting blade.
- FIG. 8B it was confirmed that when the roll 1 was cut with a rotating cutting blade, cutting traces were formed along the rotating direction of the cutting blade.
- Such cutting marks are permissible, for example, as long as they do not deteriorate the optical properties of the microlens array manufactured using the roll 1 .
- FIG. 10 is a SEM image of the surface of a transfer material on which the surface pattern of the roll 1 having cut grooves is transferred.
- FIG. 10 shows an example in which the trapezoidal control waveform shown in FIG. 9A and the triangular control waveform shown in FIG. 9B are combined.
- the control waveform shown in FIG. 9A is used, cutting grooves extending in the circumferential direction of the roll can be formed as shown in FIG. It was possible to form a plurality of continuous cutting holes in an oblique direction with respect to the direction.
- the signal generation unit 15 and the control unit 16 are configured by, for example, a computer having a memory and a processor.
- the signal generation unit 15 and the control unit 16 are realized by the processor reading and executing the program according to the present embodiment stored in the memory.
- the program describing the processing details for realizing each function of the signal generation unit 15 and the control unit 16 may be recorded on a computer-readable recording medium.
- a recording medium on which the program is recorded may be a non-transitory recording medium.
- the non-transitory recording medium is not particularly limited, but may be, for example, a recording medium such as CD-ROM or DVD-ROM.
- REFERENCE SIGNS LIST 10 roll manufacturing device 11 rotating device 11a rotary encoder 12 spindle section 12a cutting blade 13 PZT stage 14 cutting tool stage 15 signal generating section 16 control section 17 amplification section
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- Health & Medical Sciences (AREA)
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
SUS304の表面にNi-Pのめっきを施したロールを用意した。ロールの直径は130mmであり、ロールの長さは250mmであった。
本実施例では、切削深さを20μmとした。他の条件は、実施例1と同じとした。
本実施例では、切削深さを27.5μmとし、切削孔の曲率を100μmとした。他の条件は、実施例1と同じとした。
本比較例では、回転する切削刃により、NC制御を用いて、1か所ずつロールを切削する一般的な加工機を用いて、実施例1と同様の加工を行った。
本比較例では、上述した一般的な加工機を用いて、実施例1と同様の加工を行った。
本比較例では、上述した一般的な加工機を用いて、実施例3と同様の加工を行った。
11 回転装置
11a ロータリーエンコーダ
12 スピンドル部
12a 切削刃
13 PZTステージ
14 切削工具用ステージ
15 信号生成部
16 制御部
17 増幅部
Claims (6)
- 円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、前記ロールの径方向に往復移動可能なスピンドル部を保持し、前記ロールの径方向に移動可能な切削工具用ステージと、を備え、前記スピンドル部は、前記ロールの径方向を回転軸として回転可能な切削刃を備える、ロール製造装置によるロール製造方法であって、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する生成ステップと、
前記制御波形に従い、前記切削刃を回転させながら前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる切削ステップと、を含むロール製造方法。 - 請求項1に記載のロール製造方法において、
前記切削刃の先端部は、R状、円柱状、円錐状または錐台状である、ロール製造方法。 - 円筒状または円柱状のロールを円周方向に回転させ、前記ロールの回転位置に応じた信号を出力するロータリーエンコーダを備える回転装置と、
前記ロールの径方向を回転軸として回転可能な切削刃を備えるスピンドル部を、前記ロールの径方向に往復移動可能に保持し、前記ロールの径方向に移動可能な切削工具用ステージと、
前記ロータリーエンコーダから出力された信号に基づき、前記ロールの表面の所定の切削箇所に対応する位置で前記切削刃を前記ロールの径方向に往復移動させる前記切削刃の移動パターンを示す制御波形を生成する信号生成部と、
前記制御波形に従い、前記切削刃を回転させながら前記ロールの径方向に往復移動させ、前記所定の切削箇所を前記往復移動する切削刃により所定の切削深さで1または複数回切削する切削工程が複数回行われるように、前記切削工具用ステージを前記ロールの径方向に移動させる制御部と、を備えるロール製造装置。 - 表面が金属または合金からなる、円筒状または円柱状のロールであって、
前記ロールの表面には、複数の凹部がアレイ状に形成され、
前記凹部の壁面は、球面体の一部を構成し、
前記凹部の深さをdとし、前記凹部の開口端における、前記ロールの表面に対する前記凹部の壁面の傾きである入射角をθとすると、
d≧5μm、θ≧40°である、ロール。 - 請求項4に記載のロールにおいて、
前記凹部の底面は、R状、円錐状、逆円錐状または平面状である、ロール - 請求項4または5に記載のロールの表面形状を硬化性樹脂に転写して硬化した転写面を備える転写物。
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| KR1020237044076A KR20240012492A (ko) | 2021-06-24 | 2022-05-27 | 롤 제조 방법, 롤 제조 장치, 롤 및 전사물 |
| CN202280031130.4A CN117203035A (zh) | 2021-06-24 | 2022-05-27 | 辊制造方法、辊制造装置、辊以及转印物 |
| US18/567,121 US20240269756A1 (en) | 2021-06-24 | 2022-05-27 | Roll manufacturing method, roll manufacturing apparatus, roll, and transfer object |
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| JP2021-105084 | 2021-06-24 | ||
| JP2021105084A JP2023003795A (ja) | 2021-06-24 | 2021-06-24 | ロール製造方法、ロール製造装置、ロールおよび転写物 |
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| KR (1) | KR20240012492A (ja) |
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Citations (4)
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|---|---|---|---|---|
| JP2006116826A (ja) * | 2004-10-21 | 2006-05-11 | Seiko Epson Corp | マイクロレンズ基板製造用成形型、マイクロレンズ基板の製造方法、マイクロレンズ基板、透過型スクリーンおよびリア型プロジェクタ |
| JP2016107484A (ja) * | 2014-12-04 | 2016-06-20 | 澤村 一実 | 微細な溝を形成した金型、及びその製造方法 |
| WO2018051851A1 (ja) * | 2016-09-16 | 2018-03-22 | デクセリアルズ株式会社 | 原盤、転写物、および原盤の製造方法 |
| JP2020049646A (ja) * | 2018-09-21 | 2020-04-02 | デクセリアルズ株式会社 | 微細加工装置、微細加工方法、転写型、及び転写物 |
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| JP2012013748A (ja) | 2010-06-29 | 2012-01-19 | Hitachi Chem Co Ltd | マイクロレンズを備えた光学フィルムとその製造方法 |
| JP2013035057A (ja) * | 2011-08-11 | 2013-02-21 | Raitekku Kk | レーザー加工装置およびレーザー加工装置の制御方法 |
| JP2013113955A (ja) | 2011-11-28 | 2013-06-10 | Mitsubishi Rayon Co Ltd | 光学シート及びそれを用いた光学装置 |
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- 2022-05-27 CN CN202280031130.4A patent/CN117203035A/zh active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006116826A (ja) * | 2004-10-21 | 2006-05-11 | Seiko Epson Corp | マイクロレンズ基板製造用成形型、マイクロレンズ基板の製造方法、マイクロレンズ基板、透過型スクリーンおよびリア型プロジェクタ |
| JP2016107484A (ja) * | 2014-12-04 | 2016-06-20 | 澤村 一実 | 微細な溝を形成した金型、及びその製造方法 |
| WO2018051851A1 (ja) * | 2016-09-16 | 2018-03-22 | デクセリアルズ株式会社 | 原盤、転写物、および原盤の製造方法 |
| JP2020049646A (ja) * | 2018-09-21 | 2020-04-02 | デクセリアルズ株式会社 | 微細加工装置、微細加工方法、転写型、及び転写物 |
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| CN117203035A (zh) | 2023-12-08 |
| US20240269756A1 (en) | 2024-08-15 |
| KR20240012492A (ko) | 2024-01-29 |
| JP2023003795A (ja) | 2023-01-17 |
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