EP3922408A1 - Verfahren zur steuerung einer brillenglaslinsenbearbeitungsvorrichtung unter verwendung eines hallsensors - Google Patents

Verfahren zur steuerung einer brillenglaslinsenbearbeitungsvorrichtung unter verwendung eines hallsensors Download PDF

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Publication number
EP3922408A1
EP3922408A1 EP21177814.7A EP21177814A EP3922408A1 EP 3922408 A1 EP3922408 A1 EP 3922408A1 EP 21177814 A EP21177814 A EP 21177814A EP 3922408 A1 EP3922408 A1 EP 3922408A1
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EP
European Patent Office
Prior art keywords
lens
rotation
separation distance
polishing
carriage
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.)
Withdrawn
Application number
EP21177814.7A
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English (en)
French (fr)
Inventor
Seung Suk Ha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huvitz Co Ltd
Original Assignee
Huvitz Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huvitz Co Ltd filed Critical Huvitz Co Ltd
Publication of EP3922408A1 publication Critical patent/EP3922408A1/de
Withdrawn legal-status Critical Current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
    • B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
    • B24B13/06—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor grinding of lenses, the tool or work being controlled by information-carrying means, e.g. patterns, punched tapes, magnetic tapes
    • 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
    • B24B49/12—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 optical 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
    • 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
    • B24B9/14—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 of optical work, e.g. lenses, prisms
    • B24B9/148—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 of optical work, e.g. lenses, prisms electrically, e.g. numerically, controlled
    • 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
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • 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
    • B24B49/02—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 according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent
    • B24B49/04—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 according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent involving measurement of the workpiece at the place of grinding during grinding operation
    • 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
    • B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
    • 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
    • B24B9/14—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 of optical work, e.g. lenses, prisms

Definitions

  • the present invention relates to a method for controlling an eyeglass lens processing device, and more particularly, to a method for controlling an eyeglass lens processing device using a Hall sensor, configured to maintain the rotational speed of a lens rotation axis for processing a lens as constant as possible.
  • a commercially available circular lens (commonly referred to as a blank lens) must be processed into the shape of an intended eyeglass lens, for example, the shape of an eyeglass frame.
  • the conventional eyeglass lens processing apparatus of Patent Document 1 includes a pair of lens-clamping shafts 10 for clamping a lens on both sides of the lens to be processed (not shown), a carriage 12 for changing the position of the lens-clamping shafts 10 while supporting the lens-clamping shafts 10, a lens rotation motor 13 for rotating the lens-clamping shafts 10, a left-and-right driving means 16 for moving the carriage 12 in the left and right direction, an up-and-down driving means 18 for moving the carriage 12 in the up and down direction, and a polishing wheel 20 for polishing the lens clamped by the lens-clamping shafts 10.
  • the lens In order to process an eyeglass lens, the lens is first clamped between the lens-clamping shafts 10, and the lens rotation motor 13 is driven, so as to direct the part to be polished around the lens toward the polishing wheel 20. Next, by operating the left-and-right driving means 16 and the up-and-down driving means 18 to move the carriage 12 up and down, and left and right, so that the lens clamped by the lens-clamping shafts 10 and the polishing wheel 20 are brought into contact with each other, and the polishing wheel 20 is rotated at high speed to polish the lens.
  • the carriage 12 descends by the polishing depth of the lens due to gravity, and once the lens is polished to the target depth, the carriage 12 comes into contact with a movable block 22 (see Fig. 2 ) installed in a polishing wheel mount (i.e., the frame of the eyeglass lens processing apparatus) and is stopped.
  • a movable block 22 installed in a polishing wheel mount (i.e., the frame of the eyeglass lens processing apparatus) and is stopped.
  • Fig. 2 is a contact-type position detection structure between the carriage 12 and the movable block 22
  • Fig. 3 is a non-contact type position detection structure between the carriage 12 and the movable block 22 (see Patent Document 2).
  • the polishing depth (size) of the lens is determined in advance according to the shape of an eyeglass frame, and according to the polishing depth determined as such, the height of the movable block 22 installed in the polishing wheel mount is set. As shown in Fig.
  • the carriage 12 for fixing the lens descends and comes into contact with the movable block 22 positioned at the set height.
  • the eyeglass lens processing apparatus detects the contact between the carriage 12 and the movable block 22 and determines whether the lens has been completely processed to the polishing depth.
  • electrical contacts 12a and 22a are installed respectively at the contact position between the carriage 12 and the movable block 22, and it is determined whether the lens has been completely processed from the ON/OFF (energization) signal of the electrical contacts 12a and 22a.
  • the strength of the magnetic field generated by a magnet 32 mounted on the carriage 12 is detected by a Hall sensor 34 mounted on the movable block 22, so that the position of the carriage 12 is detected in a non-contact manner, thereby determining whether or not the lens has been completely processed.
  • the magnet 32 and the Hall sensor 34 described above are referred to as a Hall sensor detection unit 30. All contents of Patent Documents 1 and 2 are incorporated herein by reference.
  • the lens processing apparatus using the polishing wheel 20 brings the lens into close contact with the polishing wheel 20 with a constant pressure, and rotates the polishing wheel 20 to grind the lens.
  • the pressure that brings the lens into close contact with the polishing wheel 20 is equal to the total weight of the mechanism (carriage 12, etc.) that clamps the lens.
  • the lens needs to be rotated 360 degrees. Therefore, the pressure for bringing the lens into close contact with the polishing wheel 20 and the rotational speed of the lens are superimposed, to become a force applied to the final lens.
  • the force exerted on the lens is determined by the pressure that brings the lens into close contact with the polishing wheel 20 and the rotational acceleration of the lens.
  • a separate mechanism capable of adjusting the pressure that brings the lens into close contact with the polishing wheel 20 is installed, and the pressure may be adjusted automatically or manually according to the characteristics of the lens.
  • the force exerted on the lens is adjusted by adjusting the rotational acceleration of the lens rather than the pressure exerted on the lens.
  • the force generated by the rotation of the lens needs to be reduced by decreasing the rotational speed of the lens (i.e., by decreasing the processing speed) in a section where the lens thickness of the part to be processed is thick or the amount of processing is high.
  • the present invention provides a method for controlling an eyeglass lens processing device for processing a lens while controlling a rotational speed of a lens rotation axis, the method for controlling an eyeglass lens processing device using a Hall sensor, comprising:
  • the method for controlling an eyeglass lens processing device in accordance with the present invention it is possible to maintain the rotational speed of a lens rotation axis for processing a lens to be constant so as to prevent excessive acceleration and deceleration, to increase the processing speed, and to prevent the lens from slipping.
  • Fig. 3 is a diagram showing the structure of an eyeglass lens processing device provided with a Hall sensor that may be used in the present invention.
  • the eyeglass lens processing device that may be used in the present invention includes a movable block 22 installed in a polishing wheel mount; a carriage 12; and a Hall sensor detection unit 30 including a magnet 32 and a Hall sensor 34.
  • the movable block 22 is installed in the polishing wheel mount (i.e., a frame of the eyeglass lens processing device) on which a polishing wheel 20 (see Fig.
  • the movable block 22 is located relatively lower.
  • the movable block 22 moves up and down in the Y-axis direction using a motor, and the size of the lens to be processed is determined using the distance traveled by the motor, that is, the position (height) of the movable block 22.
  • the carriage 12 is a typical device, on which a lens is mounted and which can move the mounted lens to be in contact with the polishing wheel 20.
  • the carriage 12 moves the lens up and down and left and right, and rotates it to be in contact with the polishing wheel 20, and as the lens in contact with the polishing wheel 20 is polished, the carriage 12 descends, for example, by the action of gravity or the like, thereby causing the distance between the carriage 12 and the movable block 22 to be shortened.
  • the carriage 12 and the movable block 22 come into contact with each other and the carriage 12 can no longer descend, thereby stopping the polishing of the lens as well.
  • the eyeglass lens processing device used in the present invention uses the Hall sensor detection unit 30 to detect the positions of the movable block 22 and the carriage 12.
  • the Hall sensor detection unit 30 includes a magnet 32 and a Hall sensor 34, and the magnet 32 is mounted on one of the carriage 12 and the movable block 22, and the Hall sensor 34 is mounted on the other.
  • the physical contact between the movable block 22 and the carriage 12 only acts as a mechanical stopper for preventing a further descent of the carriage 12, and it is determined whether the movable block 22 and the carriage 12 are in contact with each other by means of a detection signal of the Hall sensor detection unit 30.
  • the eyeglass lens processing device may comprise lens-clamping shafts 10 configured to be rotated by a driving means 18 and to clamp the lens in a detachable manner, and having centers of their cross-section located on an extension line of the lens rotation axis; the movable block 22 in which the polishing wheel 20 for polishing the lens clamped and rotated by the lens-clamping shafts 10 is installed in the polishing wheel mount, and whose position changes according to the desired polishing depth of the lens; the carriage 12 configured to move the lens clamped and rotated by the lens-clamping shafts 10 to cause it to be in contact with the polishing wheel 20, and to come into contact with the movable block 22 when the lens in contact with the polishing wheel 20 is polished to the desired polishing depth; and the Hall sensor detection unit 30 in which the magnet 32 for detecting whether the movable block 22 and the carriage 12 are in contact and the Hall sensor 34 for detecting the strength of a magnetic field generated by
  • the Hall sensor 34 is a sensor that detects the direction and magnitude of a magnetic field using the Hall effect in which a voltage is generated in a direction perpendicular to an electric current and a magnetic field when the magnetic field is applied to an electrical conductor through which the current flows, and can obtain the position information of the magnet 32 by detecting the strength of the magnetic field generated by the magnet 32 with the Hall sensor 34. Therefore, it is possible to determine the positions of the movable blocks 22 and the carriage 12 (e.g., whether they are in contact) from output signals of the Hall sensor 34.
  • an output value of the Hall sensor 34 be A while the movable block 22 and the carriage 12 are in contact, then it may be determined that the movable block 22 and the carriage 12 are spaced apart from each other if an output value of the Hall sensor 34 is less than or greater than A (depending on the polarity of the magnet).
  • Fig. 4 is a flow diagram showing a method of changing a lens rotation speed in the typical eyeglass lens processing device shown in Fig. 1 .
  • one rotation (360 degrees) of a lens rotation axis is divided equally into m times to carry out the rotation, and each direction is processed. For example, if one rotation (360 degrees) of the lens rotation axis is divided equally into 180 times to carry out the rotation, the entire periphery (360 degrees) of the lens is processed by rotating 180 times with 2 degrees at a time.
  • the force F exerted on the lens is proportional to the weight M of the rotating body including the lens and the rotational acceleration a.
  • the rotational acceleration a was adjusted as in the manner of Fig. 4 .
  • step S 10 it is determined whether the contact sensor is in contact (On/Off) in the n th direction (n th time). At this time, if the contact sensor is in contact (On) in the n th direction, the rotational speed of the lens rotation axis is increased with an acceleration of a (S20) (however, the increased rotational speed is less than the maximum speed), and then the lens is rotated in the n+1 th direction (n+1 times) (S30).
  • step S30 the process proceeds to step S10 again.
  • the overall processing speed of the lens is determined according to the acceleration a. If the acceleration a is set to a predetermined maximum speed or higher (i.e., if processing while rotating the lens too fast), a phenomenon in which the lens slips occurs. In order to prevent the lens from slipping, it is necessary to decrease the acceleration, thereby reducing the overall processing speed. Therefore, in order to process the lens at high speed, it is necessary to find an appropriate rotational speed.
  • the lens volume L processed per unit time in Equation 1 indicates a grinding force, which also needs a separate measurement.
  • a Hall sensor is used to measure a relative grinding force and to set an appropriate processing speed, thereby processing the lens faster in the present invention.
  • Fig. 5 is a graph showing a change in the value of a Hall sensor according to a distance in the eyeglass lens processing device shown in Fig. 3 .
  • the Hall sensor 34 of a non-contact type is used to convert the strength of the magnetic force of the magnet 32 (y-axis in the graph, Value) into a distance (x-axis in the graph, mm)
  • the separation distance between the movable block 22 and the carriage 12 may be determined at a relatively short distance, and control the rotational speed of the lens.
  • the separation distance will be less than d1 + d2 in the second direction of rotation, and if the separation distance d2 in the second direction is equal to or less than the separation distance d1 in the first direction, it may be considered that the lens is sufficiently processed in the first direction.
  • the grinding force and the processing speed V in the corresponding rotation direction may be considered appropriate.
  • an absolute grinding force may not be measured, an appropriate grinding force can be determined by estimating relative magnitudes of the previous grinding force and the current grinding force from the separation distance d.
  • the processing speed Vn in the n th rotation direction may be considered the maximum speed Vmax.
  • the lens may have been processed with a more grinding force over a longer time.
  • the separation distance d becomes dn ⁇ dn-1 ⁇ dx, and so, it is necessary to increase the rotational speed (i.e., processing speed) of the lens again such that dn ⁇ dn+1 ⁇ dx.
  • the separation distance d becomes dn > dx, and so, it is necessary to decrease the processing speed such that dn+1 ⁇ dx.
  • the Hall sensor can determine a distance value in a certain section as shown in Fig. 5 , if the speed is controlled within a range by setting an upper limit dx_high and a lower limit dx_low of a constant separation distance, it is possible to prevent the occurrence of situations in which the speed must be reduced below the threshold. Since the lower limit dx_low is a value greater than '0,' setting the lower limit does not affect the processing speed. However, if the upper limit is set too high and the rotation is carried out at the existing speed with the upper limit, lens slippage may occur due to an insufficient grinding force. Therefore, it is necessary to set an appropriate upper limit dx_high.
  • the lens rotates 360/m degrees by one-time position control.
  • the radius of a typical eyeglass lens does not exceed 85 mm, and the radius of a normal lens does not exceed 50 mm.
  • the maximum separation distance for one rotation, dmax, generated by one rotation of the lens is "50 mm * tan (360/m)".
  • the amount of change in speed to keep the separation distance d within the constant separation distance dx is controlled according to the amount of increase in the separation distance, and the separation distance within the lower limit dx_low and the upper limit dx_high minimizes control elements to prevent unnecessary speed changes.
  • Fig. 6 is a flow diagram showing a method of changing a lens rotation speed using a Hall sensor in a method for controlling an eyeglass lens processing device in accordance with the present invention. Referring to Fig. 6 , the method for controlling an eyeglass lens processing device using a Hall sensor of the present invention is performed by the following steps.
  • the lens is polished in an n th rotation direction of what is obtained by equally dividing one rotation (360 degrees) of the lens rotation axis into m, and a separation distance dn between the movable block 22 and the carriage 12, that is, a distance between the magnet 32 and the Hall sensor 34 of the Hall sensor detection unit 30 is measured (S 100).
  • a position of the movable block 22 represents a target polishing position of the lens in the n th rotation direction
  • a position of the carriage 12 represents a polishing position of the lens in the n th rotation direction
  • the separation distance dn between the movable block 22 and the carriage 12 serves as a polishing index representing a difference between the target polishing position of the lens and the polishing position of the lens.
  • step S200 if the separation distance dn in the n th rotation is greater than or equal to the predetermined separation distance upper limit dx_high, it is determined whether (a separation distance dn-1 in an n-1 th rotation) / (a separation distance dn-2 in an n-2 th rotation) is greater than or equal to (the separation distance dn in the n th rotation) / (the separation distance dn-1 in the n-1 th rotation) (S210).
  • step S210 if (the separation distance dn-1 in the n-1 th rotation) / (the separation distance dn-2 in the n-2 th rotation) is greater than or equal to (the separation distance dn in the n th rotation) / (the separation distance dn-1 in the n-1 th rotation), the rotational speed of the lens rotation axis is rapidly increased (S220), thereby rotating the lens to the n+1 th rotation position (S400).
  • step S210 above if (the separation distance dn-1 in the n-1 th rotation) / (the separation distance dn-2 in the n-2 th rotation) is less than (the separation distance dn in the n th rotation) / (the separation distance dn-1 in the n-1 th rotation), the rotational speed of the lens rotation axis is increased slowly (S225), thereby rotating the lens to the n+1 th rotation position (S400).
  • step S200 if the separation distance dn in the n th rotation is less than the predetermined separation distance upper limit dx_high, it is determined whether the separation distance dn in the n th rotation is greater than or equal to a predetermined separation distance lower limit dx_low (S300).
  • step S300 if the separation distance dn in the n th rotation is less than the predetermined separation distance lower limit dx_low, it is determined whether (the separation distance dn-1 in the n-1 th rotation) / (the separation distance dn-2 in the n-2 th rotation) is less than (the separation distance dn in the n th rotation) / (the separation distance dn-1 in the n-1 th rotation) (S310).
  • step S310 if (the separation distance dn-1 in the n-1 th rotation) / (the separation distance dn-2 in the n-2 th rotation) is less than (the separation distance dn in the n th rotation) / (the separation distance dn-1 in the n-1 th rotation), the rotational speed of the lens rotation axis is rapidly decreased (S320), thereby rotating the lens to the n+1 th rotation position (S400).
  • step S310 if (the separation distance dn-1 in the n-1 th rotation) / (the separation distance dn-2 in the n-2 th rotation) is greater than or equal to (the separation distance dn in the n th rotation) / (the separation distance dn-1 in the n-1 th rotation), the rotational speed of the lens rotation axis is decreased slowly (S325), thereby rotating the lens to the n+1 th rotation position (S400).
  • step S300 if the separation distance dn in the n th rotation is greater than or equal to the predetermined separation distance lower limit dx_low, the lens is rotated to the n+1 th rotation position (S400).
  • the method for controlling an eyeglass lens processing device in accordance with the present invention it is possible to maintain the rotational speed of a lens rotation axis for processing a lens to be constant, to increase the average processing speed, and to prevent the lens from slipping.

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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)
EP21177814.7A 2020-06-11 2021-06-04 Verfahren zur steuerung einer brillenglaslinsenbearbeitungsvorrichtung unter verwendung eines hallsensors Withdrawn EP3922408A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020200070768A KR102409007B1 (ko) 2020-06-11 2020-06-11 홀 센서를 이용한 안경 렌즈 가공 장치의 제어 방법

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EP3922408A1 true EP3922408A1 (de) 2021-12-15

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EP21177814.7A Withdrawn EP3922408A1 (de) 2020-06-11 2021-06-04 Verfahren zur steuerung einer brillenglaslinsenbearbeitungsvorrichtung unter verwendung eines hallsensors

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US (1) US20210387304A1 (de)
EP (1) EP3922408A1 (de)
KR (1) KR102409007B1 (de)

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KR100645779B1 (ko) 2005-06-13 2006-11-14 주식회사 휴비츠 렌즈곡률 측정부를 구비한 안경렌즈 가공장치
EP2436481A2 (de) * 2010-09-30 2012-04-04 Nidek Co., Ltd. Vorrichtung zum Bearbeiten von Brillengläsern
EP2636485A2 (de) * 2012-03-09 2013-09-11 Nidek Co., Ltd Vorrichtung zum Bearbeiten von Brillengläsern
KR101897911B1 (ko) * 2017-05-04 2018-09-12 한국산업기술대학교산학협력단 안경렌즈 가공 장치
KR20190036409A (ko) * 2017-09-27 2019-04-04 주식회사 휴비츠 홀 센서를 이용한 안경 렌즈 가공 장치 및 방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3511327B2 (ja) * 1995-05-31 2004-03-29 Ｈｏｙａ株式会社 眼鏡レンズの溝堀り加工機
JP5405720B2 (ja) * 2007-03-30 2014-02-05 株式会社ニデック 眼鏡レンズ加工装置
JP5302029B2 (ja) 2009-02-04 2013-10-02 株式会社ニデック 眼鏡レンズ加工装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100645779B1 (ko) 2005-06-13 2006-11-14 주식회사 휴비츠 렌즈곡률 측정부를 구비한 안경렌즈 가공장치
EP2436481A2 (de) * 2010-09-30 2012-04-04 Nidek Co., Ltd. Vorrichtung zum Bearbeiten von Brillengläsern
EP2636485A2 (de) * 2012-03-09 2013-09-11 Nidek Co., Ltd Vorrichtung zum Bearbeiten von Brillengläsern
KR101897911B1 (ko) * 2017-05-04 2018-09-12 한국산업기술대학교산학협력단 안경렌즈 가공 장치
KR20190036409A (ko) * 2017-09-27 2019-04-04 주식회사 휴비츠 홀 센서를 이용한 안경 렌즈 가공 장치 및 방법
KR102055137B1 (ko) 2017-09-27 2019-12-12 주식회사 휴비츠 홀 센서를 이용한 안경 렌즈 가공 장치 및 방법

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