CN111421367A

CN111421367A - Method for manufacturing plate

Info

Publication number: CN111421367A
Application number: CN201910787665.4A
Authority: CN
Inventors: 邱良芳; 史常青; 夏启; 李炎阳
Original assignee: Nano Precision Suzhou Co Ltd
Current assignee: Nano Precision Suzhou Co Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-07-17
Anticipated expiration: 2039-08-26
Also published as: CN111421367B

Abstract

The invention provides a manufacturing method of a plate, which comprises the following steps. The method comprises the steps of firstly providing a plate and a trial cutting block, arranging the trial cutting block on one side of the plate, enabling a first top surface of the trial cutting block to be flush with a second top surface of the plate, and cutting the trial cutting block according to a preset processing depth to form at least one trial cutting micro-groove. And finally, cutting the plate according to the corrected processing depth to form at least one micro groove. The manufacturing method of the plate has the advantages of simplifying the trial processing verification process of forming the micro-groove on the plate, saving verification time and improving the accuracy of processing and depth correction.

Description

Method for manufacturing plate

Technical Field

The present invention relates to a method for manufacturing a plate, and more particularly, to a method for manufacturing a plate having micro grooves.

Background

In order to meet the requirement of a display device, a backlight module or a lighting module for thinning, the light guide element is also thinned, and the light guide plate of the existing thinned product is easy to generate an obvious bright and dark band distribution phenomenon on the light incident side, so that the uniformity of the light emitted by the light guide plate is reduced. At present, the micro-groove is formed by progressive machining, but the depth tolerance of the micro-groove required by the progressive machining is at least required to be less than +/-0.2 um, if the depth tolerance of the micro-groove is not controlled well, the conditions that the depth fluctuation ratio of each micro-groove is large and the micro-groove is different in length easily occur, in order to improve the problem, the warm-up time is increased, and the trial machining verification is carried out for many times, so that the time is quite consumed, and the machining process is more complicated. Furthermore, in the current preprocessing process of the micro-trench, a photosensitive coupling device (CCD) is usually used to measure the width of the micro-trench, and then the depth of the micro-trench is calculated according to the width of the micro-trench to estimate the depth correction value. However, in this method, the cursor position of the photosensitive coupling element needs to be manually adjusted, which easily causes a large measurement error, and the depth estimation method based on the width of the micro-groove also easily causes an estimation error, so that it is difficult to obtain a precise micro-groove depth value, especially when the tolerance of the micro-groove depth is less than ± 0.2um, the measurement error of the micro-groove depth has a more significant effect on the overall processing accuracy.

The background section is only provided to aid in understanding the present disclosure, and thus the disclosure in the background section may include some prior art that does not constitute a part of the knowledge of one skilled in the art. The disclosure in the "background" section does not represent a representation of the disclosure or the problems that may be solved by one or more embodiments of the present invention, but is known or appreciated by those skilled in the art prior to the filing of the present application.

Disclosure of Invention

The invention provides a manufacturing method of a plate.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention.

In order to achieve one or a part of or all of the above or other objects, an embodiment of the invention provides a method for manufacturing a plate, including providing a plate and a trial cut block, the trial cut block being disposed on one side of the plate and having a top surface flush with a top surface of the plate, and cutting the trial cut block according to a predetermined processing depth to form at least one trial cut micro-groove. And finally, cutting the plate according to the corrected processing depth to form at least one micro groove.

Embodiments of the present invention have at least one of the following advantages. By means of the design of the embodiments, the trial cutting block is used for correcting the processing depth, the trial processing verification process of forming the micro-groove on the plate can be simplified, the verification time is saved, and the method of directly measuring the trial cutting micro-groove depth by using the conjugate focus microscope does not need to manually adjust the cursor position and does not need to calculate the depth according to the groove width, so that a more accurate depth measurement value can be obtained. In addition, the mode that the trial cutting block is arranged on one side of the plate in a flush mode and then the subsequent process is carried out can ensure that the trial cutting block and the plate carry out the subsequent process on the same processing reference surface, so that the accuracy of processing and depth correction can be improved.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention. In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic configuration diagram of a board to be processed and a trial cut block according to an embodiment of the invention.

Fig. 2 is a schematic configuration diagram of a board to be processed and a trial cut block according to another embodiment of the invention.

FIG. 3 is a schematic diagram showing a trimming and testing process according to an embodiment of the present invention.

FIG. 4 is a schematic view showing the trial cutting groove depth of a block by confocal microscopy in accordance with one embodiment of the present invention.

FIG. 5 is a schematic view illustrating the formation of micro-grooves on a plate according to one embodiment of the present invention.

Fig. 6 is a flowchart of a method for manufacturing a board according to an embodiment of the invention.

List of reference numerals

10 plate

10a first top surface

10b micro groove

12 trial cut block

12a second top surface

12b trial cutting of micro-groove

14 screw

16 jig

22 vacuum adsorption system

24 processing platform

26 dressing tool

32 machine tool

34 confocal microscope

H horizontal height

Method steps S10-S60.

Detailed Description

The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1 is a schematic configuration diagram of a board to be processed and a trial cut block according to an embodiment of the invention. In the present embodiment, a cutting process is used to cut the plate 10 into a plurality of micro grooves with a predetermined depth or gradually changing micro grooves, the actual depth of the micro grooves may be less than 0.5um, for example, and the plate 10 may be a mold core of a light guide plate, but is not limited thereto. In the present embodiment, the trial cut block 12 is first disposed on one side of the plate 10, the trial cut block 12 can be abutted against one side of the plate 10, and the first top surface 12a of the trial cut block 12 is made as flush as possible with the second top surface 10a of the plate 10, thereby providing a machining reference surface for subsequent processes such as trimming and cutting. It should be noted that the trial cut 12 can be disposed on one side of the plate 10 in various ways, for example, as shown in fig. 1, the trial cut 12 can be fixed on one side of the plate 10 by screws 14. In another embodiment, as shown in fig. 2, the jig 16 may be used to clamp the trial cut block 12 to dispose the trial cut block 12 on one side of the board 10, and the jig 16 and the board 10 may be selectively fixed on the processing platform 24 by the vacuum suction system 22 through vacuum suction.

Referring to fig. 1 and 3, as shown in fig. 3, after the trial cut block 12 is placed on one side of the plate 10, the trimming tool 26 may be used to perform a trimming process to ensure that the plate 10 and the trial cut block 12 have the same horizontal height H, i.e., the first top surface 12a of the trial cut block 12 and the second top surface 10a of the plate 10 are located on the same plane after the trimming process, so as to form the same processing reference surface, thereby making the subsequent processes of cutting, measuring, depth correction and the like more accurate. The trimming step is only required to ensure the effect of forming the same machining reference surface, and may include at least one of a planing step, a grinding step, and a polishing step, for example, without particular limitation. After the plate 10 and the trial cut block 12 have the same processing reference surface, the trial cut block 12 may be trial cut, and in this embodiment, the material of the trial cut block 12 may be the same as that of the plate 10. As shown in fig. 3, the machine tool 32 performs trial cutting on the trial cut piece 12 at a predetermined processing depth to form at least one trial cut micro groove 12 b. The test cut piece 12 may then be separated from the plate 10 after the test cut, and the actual depth of the test cut micro-grooves 12b of the removed test cut piece 12 may be measured by a confocal microscope 34 as shown in fig. 4. Therefore, a corrected processing depth can be obtained by comparing the actual depth of the trial cutting micro-groove 12b with the predetermined processing depth. For example, if the required depth of the micro-groove is 0.4um, the actual depth of the trial micro-groove 12b measured by the confocal microscope 34 is 0.6um, and thus the cutting depth should be corrected to be reduced by 0.2um to obtain a corrected machining depth of 0.2 um. Finally, the plate 10 is cut according to the corrected processing depth to form at least one micro groove 10b as shown in fig. 5. In one embodiment, the tolerance between the actual depth of the micro-groove 10b formed on the plate 10 and the required depth of the micro-groove may be less than ± 0.2um, but is not limited thereto, and the depth of the whole micro-groove 10b may be constant or gradually changed according to actual requirements.

In another embodiment of the present invention, a test step of setting a tool with a micro-groove may be performed before the trial cutting step. In the step of testing the tool setting of the micro-groove, the machine tool 32 first cuts the test block 12 at a predetermined position with a test processing depth to form a test micro-groove, so as to determine an absolute coordinate value of the tool setting point in the coordinate system of the machine tool 32, and then measures the test depth of the test micro-groove using, for example, a photosensitive coupling device (CCD), and then compares the actually measured test depth with the test processing depth to determine the predetermined processing depth.

Fig. 6 is a flowchart illustrating a method for manufacturing a board according to an embodiment of the invention. Referring to fig. 1 to 6, in the manufacturing method, a plate 10 and a trial cut 12 are provided, and the trial cut 12 is disposed on one side of the plate 10 such that a first top surface 12a of the trial cut 12 is flush with a second top surface 10a of the plate 10 (step S20). Next, after the tool setting test is performed on the trial cut piece 10, the trial cut piece 12 is cut to form at least one trial cut micro groove 12b according to a predetermined processing depth (step S30). Further, the actual depth of the trial cutting micro-groove 12b of the trial cut piece 12 is measured, and the actual depth of the trial cutting micro-groove 12b is compared with the predetermined machining depth to obtain a corrected machining depth (step S40), and finally, at least one micro-groove is formed by cutting the plate according to the corrected machining depth (step S50). However, the present invention is not limited thereto, and in other embodiments, the tool setting test may be omitted, and after step S20, the trial cut block 12 is trial cut to a predetermined processing depth to form at least one trial cut micro-groove 12 b.

Embodiments of the present invention have at least one of the following advantages. By means of the design of the embodiments, the trial cutting block is used for correcting the processing depth, the trial processing verification process of forming the micro-groove on the plate can be simplified, the verification time is saved, and the method of directly measuring the trial cutting micro-groove depth by using the conjugate focus microscope does not need to manually adjust the cursor position and does not need to calculate the depth according to the groove width, so that a more accurate depth measurement value can be obtained. Furthermore, the mode that the trial cutting block is arranged on one side of the plate in a flush mode and then the subsequent process is carried out can ensure that the trial cutting block and the plate carry out the subsequent process on the same processing reference surface so as to improve the accuracy of processing and depth correction.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents. It is not necessary for any embodiment or claim of the invention to achieve all of the objects or advantages or features disclosed herein. Furthermore, the terms first, second, etc. used in the description and the claims are only used for naming components or distinguishing different embodiments or ranges, and are not used for limiting the upper limit or the lower limit of the number of components.

Claims

1. A method of manufacturing a panel, comprising the steps of:

providing a plate and a trial cutting block, wherein the trial cutting block is arranged on one side of the plate, and the first top surface of the trial cutting block is flush with the second top surface of the plate;

cutting the trial cutting block according to a preset processing depth to form at least one trial cutting micro-groove;

measuring the actual depth of the trial cutting micro-groove of the trial cutting block, and comparing the actual depth with the preset processing depth to obtain a corrected processing depth; and

and cutting the plate according to the corrected processing depth to form at least one micro-groove.

2. The method of manufacturing a panel according to claim 1, further comprising the steps of:

and carrying out a trimming process on the plate and the trial cutting block to enable the first top surface to be flush with the second top surface, wherein the trimming process comprises at least one of planing, grinding and polishing.

3. The method of manufacturing a panel according to claim 2, further comprising the steps of:

before cutting the trial cut pieces, performing a testing step including:

cutting the test cutting block by a test processing depth to form a test micro groove, and measuring the test depth of the test micro groove; and

comparing the test depth to the test machining depth to obtain the predetermined machining depth.

4. The method of manufacturing a panel according to claim 1, further comprising the steps of:

separating the trial cut pieces from the plate before measuring the actual depth of the trial cut micro-grooves of the trial cut pieces.

5. The method as claimed in claim 1, wherein the plate is made of the same material as the trial cut pieces.

6. The method as claimed in claim 1, wherein the plate is a mold core of a light guide plate.

7. The method of manufacturing a panel according to claim 1, wherein the step of arranging the trial cut pieces on the side of the panel includes: and locking the trial cutting block on the side of the plate.

8. The method of manufacturing a panel according to claim 1, wherein the step of arranging the trial cut pieces on the side of the panel includes: and fixing the trial cutting block on a jig and arranging the jig and the trial cutting block on the side of the plate.

9. The method as claimed in claim 1, wherein the step of measuring the actual depth of the test cutting micro-grooves of the test cutting block is performed by a confocal microscope.

10. The method of manufacturing a plate member according to claim 1, wherein a tolerance of an actual depth of the micro-grooves of the plate member is less than ± 0.2 um.