CN111302608A - Processing and forming method of curved surface glass with holes - Google Patents
Processing and forming method of curved surface glass with holes Download PDFInfo
- Publication number
- CN111302608A CN111302608A CN202010235439.8A CN202010235439A CN111302608A CN 111302608 A CN111302608 A CN 111302608A CN 202010235439 A CN202010235439 A CN 202010235439A CN 111302608 A CN111302608 A CN 111302608A
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- glass
- holes
- hole
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- forming
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- 239000011521 glass Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 title claims abstract description 17
- 238000013003 hot bending Methods 0.000 claims abstract description 18
- 238000003801 milling Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a processing and forming method of curved surface hole glass, which comprises the following steps: step 1): taking a piece of glass, milling holes with standard sizes, and then carrying out hot bending treatment on the glass; step 2): measuring the expansion amount of the hole subjected to the hot bending treatment, and calculating the expansion coefficient of the hole under the standard size; step 3): taking another piece of glass, increasing the length and width of the hole according to the expansion coefficient measured in the step 2), and milling the compensated hole; step 4): carrying out hot bending treatment on the glass in the step 3) so as to obtain holes with standard sizes; the invention has the advantages that the forming problem of most curved glass with holes can be effectively solved, the forming of the holes can reach the expected standard, and the size precision of the holes is greatly improved.
Description
Technical Field
The invention relates to a processing and forming method of glass, in particular to a processing and forming method of curved surface glass with holes.
Background
With the large-scale application of glass, glass products have become a necessity for people's daily life, but at the same time consumers also experience a certain degree of aesthetic fatigue. The performance of the glass meets the daily requirement of people, but the appearance of the glass does not change much, and the similar appearance is difficult to attract the eyes of consumers and stimulate the consumption desire of the consumers. Therefore, in order to solve the problem, the curved surface glass with holes is urgently needed to be developed, so that the consumption desire of consumers is improved, and the development of enterprises, industries and even countries is driven. However, the forming degree of the curved-surface holed glass on the market is poor, and the curved-surface holed glass is influenced by temperature, so that the forming of holes cannot meet the expected standard. Aiming at the problems of high processing difficulty and difficulty in ensuring precision, a new process is urgently needed to improve the processing of the curved-surface glass with holes.
Disclosure of Invention
The invention aims to: the processing and forming method of the curved-surface glass with the holes can effectively solve the forming problem of most curved-surface glass with the holes, the holes can be formed to meet the expected standard, and the size precision of the holes is greatly improved.
The technical scheme of the invention is as follows: the processing and forming method of the curved surface hole-containing glass is characterized by comprising the following steps of:
step 1): taking a piece of glass, milling holes with standard sizes, and then carrying out hot bending treatment on the glass;
step 2): measuring the expansion amount of the hole subjected to the hot bending treatment, and calculating the expansion coefficient of the hole under the standard size;
step 3): taking another piece of glass, increasing the length and width of the hole according to the expansion coefficient measured in the step 2), and milling the compensated hole;
step 4): carrying out hot bending treatment on the glass in the step 3), thereby obtaining holes with standard sizes.
As a preferable technical solution, the hot bending treatment method in step 1) and step 4) is as follows:
(a) the temperature was first raised to 650 ℃;
(b) then slowly heating to 750 ℃;
(c) then heating to 780 ℃ again, pressing the upper die downwards to enable the glass to form a curved surface, and keeping the temperature for 20 minutes;
(d) opening the mold cavity when the temperature in the mold cavity is reduced to 300 ℃ through a cooling system;
(e) and finally, cooling and forming the glass at room temperature.
As a preferred technical solution, the method for calculating the expansion coefficient of the hole with the standard size in step 2) is as follows:
assuming that the standard size of the hole is a1 and the size of the hole after the hot-bending treatment is a2, the expansion coefficient of the hole at the standard size = (a 1-a 2)/a 1.
As a preferable technical scheme, the CNC method is adopted to mill corresponding holes on the glass in the steps 1) and 3).
Preferably, the glass used in step 1) and step 3) is AG glass.
The invention has the advantages that:
the processing and forming method of the curved-surface glass with the holes can effectively solve the forming problem of most curved-surface glass with the holes, the holes can be formed to meet the expected standard, and the size precision of the holes is greatly improved.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a flow chart of the processing and forming method of curved surface holed glass of the present invention.
Detailed Description
Example 1:
referring to fig. 1, the method for processing and forming curved-surface holed glass in this embodiment includes the following steps:
step 100:
taking a piece of glass (the specification of 700mm 200mm 1.3mm, AG glass) and milling holes with standard sizes (the size of the holes is 150 mm) by a CNC method, putting the glass with the milled holes into a hot bending machine for hot bending treatment, firstly raising the temperature to 650 ℃, then slowly heating to 750 ℃ (the reason that the glass is heated too fast and is broken at the stage of slow heating), then heating to 780 ℃ again, pressing an upper mold downwards to form the glass into a curved surface, keeping the temperature for 20 minutes at constant temperature, opening the mold cavity when the temperature in the mold cavity is reduced to 300 ℃ by a cooling system, and finally cooling and forming the glass at room temperature.
Step 200:
because the glass expands when being heated during hot bending, the holes on the curved surface deform, and the sides of the holes extend inwards (the size of the measured holes is 149.85mm × 149.85 mm), so that the deformation amount is larger and is not in accordance with the design. At this time, the deformation amount of the size of the hole subjected to the hot bending treatment is measured, deviation is obtained by comparing the deformation amount with the standard size (the length and width deformation amounts reach 0.15 mm), and the expansion coefficient (the expansion coefficient is 1 per mill) of the hole under the standard size is obtained by calculation.
Step 300:
in order to prevent the holes on the curved glass from being deformed due to heating, the product is not qualified. When the holes are milled by adopting a CNC method, the length and width dimensions of the holes (the compensated holes are designed to be 150.15mm x 150.15 mm) are increased according to the expansion coefficient of the holes, so that after the product is heated, all sides of the holes are expanded inwards to play a role in size compensation, and the product meets the specification requirement.
Step 400:
and (5) verifying, and performing hot bending on the glass with the modified size. After the modified glass was hot bent, the holes were heated and the sides expanded inward, and the sides were compensated to standard dimensions (the hole size was measured 150mm x 150mm after heating), which were measured to meet the requirements.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The processing and forming method of the curved surface hole-containing glass is characterized by comprising the following steps of:
step 1): taking a piece of glass, milling holes with standard sizes, and then carrying out hot bending treatment on the glass;
step 2): measuring the expansion amount of the hole subjected to the hot bending treatment, and calculating the expansion coefficient of the hole under the standard size;
step 3): taking another piece of glass, increasing the length and width of the hole according to the expansion coefficient measured in the step 2), and milling the compensated hole;
step 4): carrying out hot bending treatment on the glass in the step 3), thereby obtaining holes with standard sizes.
2. The method for processing and forming curved-surface glass with holes according to claim 1, wherein the hot bending treatment in step 1) and step 4) is as follows:
(a) the temperature was first raised to 650 ℃;
(b) then slowly heating to 750 ℃;
(c) then heating to 780 ℃ again, pressing the upper die downwards to enable the glass to form a curved surface, and keeping the temperature for 20 minutes;
(d) opening the mold cavity when the temperature in the mold cavity is reduced to 300 ℃ through a cooling system;
(e) and finally, cooling and forming the glass at room temperature.
3. The method for processing and forming curved glass with holes according to claim 1, wherein the method for calculating the expansion coefficient of the holes under the standard size in step 2) is as follows:
assuming that the standard size of the hole is a1 and the size of the hole after the hot-bending treatment is a2, the expansion coefficient of the hole at the standard size = (a 1-a 2)/a 1.
4. The method for processing and forming curved glass with holes according to claim 1, wherein CNC is adopted in step 1) and step 3) to mill corresponding holes on the glass.
5. The method for processing and forming curved-surface glass with holes according to claim 1, wherein the glass used in step 1) and step 3) is AG glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235439.8A CN111302608A (en) | 2020-03-30 | 2020-03-30 | Processing and forming method of curved surface glass with holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235439.8A CN111302608A (en) | 2020-03-30 | 2020-03-30 | Processing and forming method of curved surface glass with holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111302608A true CN111302608A (en) | 2020-06-19 |
Family
ID=71158998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010235439.8A Pending CN111302608A (en) | 2020-03-30 | 2020-03-30 | Processing and forming method of curved surface glass with holes |
Country Status (1)
| Country | Link |
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| CN (1) | CN111302608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644448A (en) * | 2020-12-21 | 2022-06-21 | 余姚舜宇智能光学技术有限公司 | Curved glass and method for forming hole in curved glass |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100920616B1 (en) * | 2009-06-02 | 2009-10-08 | 이정호 | Cooling apparatus for manufacturing curved tempered glass |
| CN106430921A (en) * | 2016-09-29 | 2017-02-22 | 信利光电股份有限公司 | Method for manufacturing blind hole curved glass |
| CN107473574A (en) * | 2017-09-22 | 2017-12-15 | 贵州新中盛玻璃科技有限公司 | A kind of preparation method of curved glass panel |
| CN108262667A (en) * | 2018-01-19 | 2018-07-10 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | The method that bearing machining determines dimension compensation amount |
| CN109206002A (en) * | 2018-11-19 | 2019-01-15 | 江苏优视光学科技股份有限公司 | A kind of processing technology of 3D glass |
| CN109465517A (en) * | 2018-12-17 | 2019-03-15 | 云南昆钢重型装备制造集团有限公司 | A kind of thermal expansion amount control method of NC Flame Cutting part of the steel plate size |
-
2020
- 2020-03-30 CN CN202010235439.8A patent/CN111302608A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100920616B1 (en) * | 2009-06-02 | 2009-10-08 | 이정호 | Cooling apparatus for manufacturing curved tempered glass |
| CN106430921A (en) * | 2016-09-29 | 2017-02-22 | 信利光电股份有限公司 | Method for manufacturing blind hole curved glass |
| CN107473574A (en) * | 2017-09-22 | 2017-12-15 | 贵州新中盛玻璃科技有限公司 | A kind of preparation method of curved glass panel |
| CN108262667A (en) * | 2018-01-19 | 2018-07-10 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | The method that bearing machining determines dimension compensation amount |
| CN109206002A (en) * | 2018-11-19 | 2019-01-15 | 江苏优视光学科技股份有限公司 | A kind of processing technology of 3D glass |
| CN109465517A (en) * | 2018-12-17 | 2019-03-15 | 云南昆钢重型装备制造集团有限公司 | A kind of thermal expansion amount control method of NC Flame Cutting part of the steel plate size |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114644448A (en) * | 2020-12-21 | 2022-06-21 | 余姚舜宇智能光学技术有限公司 | Curved glass and method for forming hole in curved glass |
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Application publication date: 20200619 |
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