CN110549186A - 2.5D glass cambered surface machining equipment and cambered surface machining method - Google Patents

2.5D glass cambered surface machining equipment and cambered surface machining method Download PDF

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Publication number
CN110549186A
CN110549186A CN201810500141.8A CN201810500141A CN110549186A CN 110549186 A CN110549186 A CN 110549186A CN 201810500141 A CN201810500141 A CN 201810500141A CN 110549186 A CN110549186 A CN 110549186A
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CN
China
Prior art keywords
glass substrate
glass
height
probe
cambered surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810500141.8A
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Chinese (zh)
Inventor
周群飞
陈强
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Lens Technology Co Ltd
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Lens Technology Co Ltd
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Publication date
Application filed by Lens Technology Co Ltd filed Critical Lens Technology Co Ltd
Priority to CN201810500141.8A priority Critical patent/CN110549186A/en
Publication of CN110549186A publication Critical patent/CN110549186A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00—Component parts such as frames, beds, carriages, headstocks
    • B24B41/06—Work supports, e.g. adjustable steadies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/10—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
    • B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
    • B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
    • B24B9/08—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain of glass

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

the invention provides 2.5D glass cambered surface processing equipment and a cambered surface processing method, and relates to the field of glass panels. The cambered surface processing equipment can be used for relieving the technical problem of low 2.5D glass cambered surface processing yield caused by the cambered surface processing method, and the purpose of improving the cambered surface processing yield is achieved.

Description

2.5D glass cambered surface machining equipment and cambered surface machining method
Technical Field
The invention relates to the field of glass panel processing, in particular to cambered surface processing equipment and a cambered surface processing method for 2.5D glass.
Background
The 2.5D glass is a glass with a plane in the middle and an arc surface formed by downwards sinking the edge part, and compared with the common glass, the 2.5D glass has good touch and visual effect. At present, 2.5D glass is mostly adopted for mobile phone screens.
In the existing processing technology, the processing yield of the cambered surface is only about 60%. The inventor finds that in the process of processing a 2.5D product by adopting a numerical control processing technology, the flatness of the supplied materials of the glass substrate, the deformation of the base, the cleanliness of the base and the repeated positioning precision of the grinding tool can influence the processing precision of the grinding tool each time. In the existing processing technology, each processing position of the grinding tool is basically fixed, but because each glass substrate has a certain thickness and flatness error (approximately about 0.005 mm), the base also has a certain deformation (approximately about 0.01 mm), the base has a certain cleanliness problem (the particle size of glass dust falling on the base is approximately about 0.007 mm), and the main shaft of the grinding tool has a certain deviation in repeated positioning (the repeated positioning precision of the main shaft is approximately about 0.005 mm), all of which affect the surface height of the glass substrate placed on the base.
Typically, the arc width to thickness ratio of the 2.5D glass arc is 30: the glass substrate surface height value can be influenced by the thickness and flatness errors of glass, base deformation, base cleanliness problem and repeated positioning precision of a grinding tool spindle in the thickness direction. The control tolerance of the arc width of the cambered surface of the qualified 2.5D glass is +/-0.15 mm, the range error is 0.3mm, the error range of the arc width caused by the influence factors is (0.005+0.01+0.007+0.005) × 30 is 0.81mm, and the error range is far larger than the control range error by 0.3mm, and at the moment, if the machining height of the grinding tool is not adjusted, the problems of poor cambered surface machining such as incomplete machining or overlarge machining size and the like often occur.
Disclosure of Invention
The invention aims to provide 2.5D glass cambered surface processing equipment and a cambered surface processing method, which are used for relieving the technical problem of low 2.5D glass cambered surface processing yield caused by the existing cambered surface processing method.
in order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the 2.5D glass cambered surface processing equipment comprises a base used for placing a glass substrate, a probe used for detecting the surface height of the glass substrate and a grinding tool used for processing the glass cambered surface, wherein the probe and the grinding tool are respectively connected with a controller.
further, the detection precision of the probe is less than or equal to 0.001 mm.
A method for processing an arc surface of 2.5D glass comprises the following steps:
a) Firstly, detecting the surface height value H 1 of a glass substrate placed on a base by using a probe, and feeding back the surface height value H 1 of a detection signal to a controller by using the probe;
b) And the controller calculates a height difference delta H between the surface height value H 1 and a preset grinding tool machining height H 2, then inputs the height difference delta H as a compensation value into a grinding tool machining path formula to adjust the machining path of the grinding tool, and controls the grinding tool to machine the cambered surface of the glass substrate according to the adjusted machining path after the adjustment is finished.
Further, in the step a), the height values of at least three points on the glass substrate are detected by using a probe, and the average value is obtained to obtain the surface height value H 1 of the glass substrate.
further, in the step a), the height values of the four corner positions on the glass substrate are detected by using a probe, and the average value is obtained to obtain a surface height value H 1 of the glass substrate.
Furthermore, the difference of the height values of different points on the glass substrate is less than or equal to 0.005 mm.
Further, when the difference of the height values of different point positions on the glass substrate is larger than 0.005mm, the glass substrate is subjected to flat grinding treatment, and then the cambered surface of the glass substrate is processed.
Furthermore, when the difference of the height values of different point positions on the glass substrate is larger than 0.005mm, the base is cleaned first, and then the cambered surface of the glass substrate is processed.
Furthermore, when the difference of the height values of different point positions on the glass substrate is larger than 0.005mm, the flatness of the base is adjusted first, and then the cambered surface of the glass substrate is processed.
Compared with the prior art, the invention has the following beneficial effects:
The 2.5D glass cambered surface processing equipment provided by the invention is additionally provided with the probe for detecting the height of the surface position of the glass substrate, the probe is connected with the controller, the probe can transmit the height information of the detected surface position of the glass substrate to the controller, the controller obtains the information for adjusting the position of the grinding tool through calculation, and the controller adjusts the processing path of the grinding tool according to the adjustment information, so that each piece of glass is processed in a targeted manner. Utilize this cambered surface processing equipment, before beginning to polish, utilize this probe to survey the surface height that glass was located earlier, then give the controller with the detected signal transmission, the controller does the calculation with preset's machined height, and regard this calculation difference as the route of polishing of offset control adjustment grinding apparatus, avoid because of glass thickness and roughness error own, the base deformation, base cleanliness factor problem and grinding apparatus main shaft repeated positioning precision cause grinding apparatus machined path too high or low, thereby can effectively prevent the appearance of bad problems such as glass cambered surface machined dimension does not target in place or machined dimension is too big.
the invention provides a method for processing an arc surface of 2.5D glass, which comprises the steps of firstly detecting the surface height value H 1 of a glass substrate placed on a base, feeding a detection signal back to a controller by a probe, then calculating the height difference delta H between the height value H 1 and the preset grinding tool processing height H 2 by the controller, controlling and adjusting the processing path of a grinding tool by taking the height difference delta H as a compensation value, and processing the arc surface of the glass substrate.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In one aspect, the invention provides 2.5D glass cambered surface processing equipment which comprises a base used for placing a glass substrate, a probe used for detecting the surface height of the glass substrate and a grinding tool used for processing a glass cambered surface, wherein the probe and the grinding tool are respectively connected with a controller.
The 2.5D glass cambered surface processing equipment provided by the invention is additionally provided with the probe for detecting the height of the surface position of the glass substrate, the probe is connected with the controller, the probe can transmit the height information of the detected surface position of the glass substrate to the controller, the controller obtains the information for adjusting the position of the grinding tool through calculation, and the controller adjusts the processing path of the grinding tool according to the adjustment information, so that each piece of glass is processed in a targeted manner. Utilize this cambered surface processing equipment, before beginning to polish, utilize this probe to survey the surface height that glass was located earlier, then give the controller with the detected signal transmission, the controller does the calculation with preset's machined height, and regard this calculation difference as the route of polishing of offset control adjustment grinding apparatus, avoid because of glass thickness and roughness error own, the base deformation, base cleanliness factor problem and grinding apparatus main shaft repeated positioning precision cause grinding apparatus machined path too high or low, thereby can effectively prevent the appearance of bad problems such as glass cambered surface machined dimension does not target in place or machined dimension is too big.
In the present invention, the probe is selected to have a specification model such as Renyao OMP 40-2. During installation, the probe is installed on the equipment rack, and the probe can move in the space above the base corresponds after installation so that the surface height value of different positions of the glass substrate can be detected. The height direction is defined as the height direction by taking the plane of the base as a reference plane or taking any plane parallel to the plane of the base as a reference plane and the direction of a perpendicular line along the reference plane. When the glass substrate is placed on the base, the thickness direction of the glass substrate is the height direction. Before arc surface processing is carried out each time, the initial position of the grinding tool is always defined as the same fixed position, and then the processing path of the grinding tool is adjusted according to the detection result of the probe.
In addition, the grinding tool is also arranged on the equipment frame, and after the grinding tool is arranged, the grinding tool can be used for processing the cambered surface of the edge of the glass substrate placed on the base. The installation position of the probe cannot influence the operation of the grinding tool, and similarly, the installation position of the grinding tool cannot influence the operation of the probe. After the probe detection is finished and the original point is returned, the grinding tool is started to operate to process the cambered surface.
In order to further reduce the fraction defective due to systematic errors, in some embodiments of the invention, the probe has a detection accuracy of 0.001mm or less. The smaller the value of the detection precision is, the higher the accuracy of the probe is, and the accuracy of the grinding tool machining path can be further improved by improving the detection precision of the probe.
On the other hand, the invention provides a method for processing an arc surface of 2.5D glass, which comprises the following steps:
a) Firstly, detecting the surface height value H 1 of a glass substrate placed on a base by using a probe, and feeding back the surface height value H 1 of a detection signal to a controller by using the probe;
b) And the controller calculates a height difference delta H between the surface height value H 1 and a preset grinding tool machining height H 2, then inputs the height difference delta H as a compensation value into a grinding tool machining path formula to adjust the machining path of the grinding tool, and controls the grinding tool to machine the cambered surface of the glass substrate according to the adjusted machining path after the adjustment is finished.
the invention provides a method for processing an arc surface of 2.5D glass, which comprises the steps of firstly detecting the surface height value H 1 of a glass substrate placed on a base, feeding a detection signal back to a controller by a probe, then calculating the height difference delta H between the surface height value H 1 of the glass substrate and the preset grinding tool processing height H 2 by the controller, controlling and adjusting the processing path of a grinding tool by taking the height difference delta H as a compensation value, and processing the arc surface of the glass substrate.
The definition of the height direction in the arc surface processing method is as described in the arc surface processing equipment, and is not described herein again.
In some embodiments of the present invention, in step a), the height values of at least three positions on the glass substrate are detected by using the probe, and the height values are averaged to obtain the surface height value H 1. for example, the height values of four corner positions on the glass substrate are detected by using the probe, and the average value is averaged to obtain the surface height value H 1. by measuring the height values of at least three positions and then averaging, the accuracy of the processing path of the grinding tool can be further improved, and the fraction defective caused by errors can be reduced.
In order to further improve and reduce the defect rate caused by errors, in some embodiments of the invention, the difference between the height values of different points on the glass substrate is less than or equal to 0.005 mm.
By limiting the difference between the height values of different points on the glass substrate to 0.005mm or less, the influence of the systematic error can be minimized at the very beginning. When the difference of the height values of different point positions on the glass substrate is larger than 0.005mm, whether the thickness dimension of the glass substrate is out of tolerance or not can be checked, and if the thickness dimension of the glass substrate is out of tolerance, the cambered surface of the glass substrate can be processed again after flat grinding; if the dimension is out of tolerance caused by deformation of the base, the base can be adjusted or replaced to eliminate system errors; if the size is out of tolerance due to the cleanliness of the base, the system error can be eliminated by cleaning the base. Through the difference in height to different position on the glass substrate management and control, exceed and set for the threshold value scope and shut down promptly, can avoid because of the difference in height is too big the product yield after leading to processing low, and repair cost bigger, or the direct condemned problem of glass.
In the above embodiment, the difference in height values between different spots on the glass substrate is set to 0.005mm or less based on the following consideration:
Since the arc width to thickness ratio of the 2.5D glass product is 30: 1, the allowable tolerance of the arc width of the qualified 2.5D glass product is +/-0.15 mm, so the error in the height direction is controlled within 0.01mm, after the glass substrate is clamped and fixed on the base, the processing precision of the arc surface of the glass substrate is only influenced by the repetition precision of the main shaft, at the moment, the repetition precision of the main shaft is removed by 0.005mm, the allowable error of the glass substrate per se is controlled within 0.005mm, and the final 2.5D glass product can be effectively prevented from exceeding the qualified line.
Examples
The embodiment is a method for processing an arc surface of 2.5D glass, and the equipment for processing the arc surface of the 2.5D glass used in the method for processing the arc surface comprises a base used for placing a glass substrate, a probe used for detecting the surface height of the glass substrate, and a grinding tool used for processing the arc surface of the glass, wherein the probe and the grinding tool are respectively connected with a controller. Wherein the detection precision of the probe is less than 0.001 mm. Specifically, the arc surface processing method comprises the following steps:
a) in the embodiment, the surface height value H 1 is an average value after testing the height values of multiple points on the surface of the glass substrate, specifically, the controller controls the probes to respectively detect the height values of four corner positions on the glass substrate, the probes feed back the height values of the four corner positions on the surface of the glass substrate of a detection signal to the controller, and the controller calculates the average value to obtain the surface height value H 1 of the glass substrate;
b) And the controller calculates the height difference delta H between the surface height value H 1 of the glass substrate and the preset machining height H 2 of the grinding tool, then inputs the height difference delta H as a compensation value into a machining path formula of the grinding tool to adjust the machining path of the grinding tool, and controls the grinding tool to machine the cambered surface of the glass substrate according to the adjusted machining path after the adjustment is finished.
10000 glass substrates are processed by the cambered surface processing method, and the processing qualified rate of the cambered surface of the obtained 2.5D glass is 90%.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims (9)

1. the 2.5D glass cambered surface processing equipment is characterized by comprising a base for placing a glass substrate, a probe for detecting the surface height of the glass substrate and a grinding tool for processing the glass cambered surface, wherein the probe and the grinding tool are respectively connected with a controller.
2. The apparatus for machining the arc surface of 2.5D glass according to claim 1, wherein the probe has a detection accuracy of 0.001mm or less.
3. The method for processing the cambered surface of the 2.5D glass is characterized by comprising the following steps of:
a) Firstly, detecting the surface height value H 1 of a glass substrate placed on a base by using a probe, and feeding back the surface height value H 1 of a detection signal to a controller by using the probe;
b) And the controller calculates a height difference delta H between the surface height value H 1 and a preset grinding tool machining height H 2, then inputs the height difference delta H as a compensation value into a grinding tool machining path formula to adjust the machining path of the grinding tool, and controls the grinding tool to machine the cambered surface of the glass substrate according to the adjusted machining path after the adjustment is finished.
4. The method for processing the cambered surface of 2.5D glass according to claim 3, wherein in the step a), the height values of at least three points on the glass substrate are detected by using a probe, and the average value is obtained to obtain the surface height value H 1 of the glass substrate.
5. The method for processing the arc surface of the 2.5D glass as claimed in claim 4, wherein in the step a), the height values of four corner positions on the glass substrate are detected by using a probe, and the average value is obtained to obtain the surface height value H 1 of the glass substrate.
6. The method of claim 4 or 5, wherein the difference between the height values of different points on the glass substrate is less than or equal to 0.005 mm.
7. The method of claim 6, wherein when the height difference between different points on the glass substrate is greater than 0.005mm, the glass substrate is first ground and then processed into the arc surface.
8. The method of claim 6, wherein when the difference between the height values of different points on the glass substrate is greater than 0.005mm, the base is cleaned and then the glass substrate is processed to form the arc surface.
9. The method of claim 6, wherein when the height difference between different points on the glass substrate is greater than 0.005mm, the flatness of the base is adjusted and then the glass substrate is processed.
CN201810500141.8A 2018-05-22 2018-05-22 2.5D glass cambered surface machining equipment and cambered surface machining method Pending CN110549186A (en)

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CN201810500141.8A CN110549186A (en) 2018-05-22 2018-05-22 2.5D glass cambered surface machining equipment and cambered surface machining method

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CN201810500141.8A CN110549186A (en) 2018-05-22 2018-05-22 2.5D glass cambered surface machining equipment and cambered surface machining method

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Publication number Priority date Publication date Assignee Title
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JP2016132605A (en) * 2015-01-21 2016-07-25 ＡｖａｎＳｔｒａｔｅ株式会社 Method for manufacturing glass substrate
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CN102133725A (en) * 2010-01-27 2011-07-27 均豪精密工业股份有限公司 Improved substrate invalid edge removing system
CN204076012U (en) * 2014-08-13 2015-01-07 深圳市远洋翔瑞机械股份有限公司 A kind of device processing sapphire glass cover plate
JP2016132605A (en) * 2015-01-21 2016-07-25 ＡｖａｎＳｔｒａｔｅ株式会社 Method for manufacturing glass substrate
CN104786119A (en) * 2015-03-20 2015-07-22 苏州市智诚光学科技有限公司 Grinding tool used for machining glass cover plate
CN106643602A (en) * 2016-12-24 2017-05-10 上海与德信息技术有限公司 Probe reference compensation system and method
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Application publication date: 20191210