JP2013178432A - Method of determining processing data of spectacle lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid the trouble that a lens is processed into an erroneous shape.SOLUTION: A method for determining processing data of a spectacle lens determines processing data including a lens shape with which a peripheral edge of a lens is to be processed by a spectacle lens peripheral edge processing device including a peripheral edge processing tool for processing a peripheral edge of a spectacle lens. The method includes: a fundamental lens shape acquisition step of acquiring a fundamental lens shape; a determination step of determining whether a lens can be processed into a fundamental lens shape by the peripheral edge processing tool or not on the basis of a diameter of the peripheral edge processing tool; and a processing lens shape determination step of, when it is determined in the determination step that the lens can be processed, determining the fundamental lens shape as lens shape data for processing for the peripheral edge processing tool.

Description

  The present invention relates to a spectacle lens processing data determination method for determining processing data including a target lens shape for processing a peripheral edge of a spectacle lens by a spectacle lens peripheral processing apparatus.

  In the eyeglass lens periphery processing apparatus, the periphery of the lens is processed by a peripheral processing tool such as a rough processing tool and a finishing processing tool based on the target lens shape. Conventionally, the target lens shape was obtained by tracing the rim of the spectacle frame or the demo lens, but the target lens shape obtained from the design data of the rim of the spectacle frame or the demo lens is registered in the database as processing data. Thus, the lens having the same target lens shape can be efficiently processed repeatedly without tracing the rim or the demo lens each time (for example, see Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 10-186293 JP-A-8-290348

  By the way, in recent years, the design of spectacle frames has been diversified. In particular, in rimless frames (so-called two-point frames) and half-rim frames (so-called nyroll frames), it is possible to give fashion to the outer diameter shape of lenses. For this reason, an increasing number of lenses are designed with a concave shape (inverted R shape) in which the outer shape of the lens is recessed inward.

  However, a lens having a concave shape smaller than the diameter of the peripheral processing tool such as a finishing grindstone of the spectacle lens peripheral processing apparatus is treated as processing data, and the operator is not aware of this, and usually based on the target lens If the lens periphery is processed under the above processing conditions, the lens is processed into an incorrect shape (a shape in which a concave shape smaller than the diameter of the processing tool is removed).

  It is an object of the present invention to provide a spectacle lens processing data determination method that can avoid the trouble of processing a lens into an incorrect shape and that can appropriately process a lens even if it is a lens having a concave shape. Let it be a technical issue.

In order to solve the above problems, the present invention is characterized by having the following configuration.
(1) A spectacle lens processing data determination method for determining processing data including a target lens shape for processing a lens periphery by a spectacle lens peripheral processing apparatus having a peripheral processing tool for processing the peripheral edge of the spectacle lens is a basic lens. A basic lens shape obtaining step for obtaining a mold, a determination step for determining whether or not a lens can be processed into the basic lens shape by the peripheral edge processing tool based on the diameter of the peripheral edge processing tool, and processing by the determination step A spectacle lens processing data determination method comprising: a processing target shape determination step for determining the basic target lens as processing target lens data by the peripheral processing tool when determined.
(2) In the spectacle lens processing data determination method according to (1), the peripheral processing tool includes a first peripheral processing tool having a large diameter and a second peripheral processing tool having a smaller diameter than the first peripheral processing tool, and the determination step. Includes a step of determining whether the lens can be processed into a basic target lens shape by the first peripheral processing tool based on the diameter of the first peripheral processing tool, and the processing target shape determining step is performed by the determining step. When it is determined that the processing is impossible, a step of determining a correction target shape obtained by correcting the processing impossible region by the first peripheral processing tool so as to be processed by the first peripheral processing tool; A method for determining spectacle lens processing data, comprising a step of determining an additional processing trajectory for additional processing by a peripheral processing tool and processing into a basic target lens shape.
(3) In the spectacle lens processing data determination method according to (2), a first registration step of registering the basic target lens shape as processing target lens data in a database when the determination step determines that processing is possible, and the determination step A second registration step of registering the corrected target shape determined in the processed target shape determination step and the additional processed locus in the database as processed data when it is determined that the processing is impossible. Processing data determination method.
(4) In the spectacle lens processing data determination method according to (3), the first registration step includes a step of registering the basic lens shape in association with identification data for registering the basic lens shape so as to be callable from a database. And the second registration step registers the processing data of the correction target lens and the additional processing trajectory in the database in association with identification data for registering the processing data of the correction target lens and the additional processing trajectory from the database. A method for determining spectacle lens processing data, comprising a step.
(5) In the spectacle lens processing data determination method of (2), the determination step includes adding the first peripheral edge to other processing points when the first peripheral processing tool is brought into contact with each processing point of the basic target lens shape. It is determined whether or not the lens can be processed into a basic target lens shape based on whether or not the tool diameter interferes, and the processing target lens determining step is performed when the first peripheral processing tool is brought into contact with each processing point of the basic target lens shape. A region where the diameter of the first peripheral processing tool interferes with another processing point is determined as a non-processable region by the first peripheral processing tool, and the concave shape that is recessed inside the basic target lens for the determined non-processing region A method for determining spectacle lens processing data, wherein the correction lens shape is determined by correcting the shape to be larger than the radius of the first peripheral processing tool.
(6) In the spectacle lens processing data determination method according to (5), the processing lens shape determination step obtains a shape in which the processing point that the first peripheral processing tool comes into contact with in the non-processable region is a correction ball. A method for determining spectacle lens processing data, wherein a type is determined.
(7) In the spectacle lens processing data determination method according to (2), the processing lens shape determination step includes a step of determining whether or not the non-processable region can be processed into a basic lens shape by the second peripheral processing tool. An eyeglass lens processing data determination method, wherein when the processing is impossible, an additional processing locus approximated to a basic target lens shape by processing the second peripheral processing tool is determined based on a diameter of the second peripheral processing tool.
(8) In the spectacle lens processing data determination method according to (1), when it is determined that processing is not possible in the determination step, a warning is given to that effect, and when the determination step determines that processing is possible, the basic lens shape is selected. A spectacle lens comprising: a registration step of registering in a database as processing target lens shape data, the registration step registering in association with identification data for registering the basic target lens shape so as to be callable from the database. Processing data determination method.

  According to the present invention, it is possible to avoid the trouble of processing a lens into an incorrect shape. Further, even if the target lens shape has a concave shape, an appropriate lens can be processed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Prior to the description of the spectacle lens processing data determination device according to the present invention, a configuration example of the spectacle lens peripheral processing device will be described. FIG. 1 is a schematic configuration diagram of a spectacle lens peripheral edge processing apparatus.

  On the base 170 of the eyeglass lens peripheral edge processing apparatus 1, a carriage 101 is mounted that rotatably holds a pair of lens chuck shafts 102L and 102R. The peripheral edge of the spectacle lens LE sandwiched between the chuck shafts 102L and 102R is processed by a large-diameter grindstone group 168 as a peripheral processing tool attached coaxially to a spindle (processing tool rotating shaft) 161a. The grindstone group 168 includes a rough grindstone 162, a finishing grindstone 164 having a bevel-forming V groove and a flat surface. A cutter may be used as the peripheral edge processing tool of the lens LE. The processing diameter of the rough grindstone 162 and the finishing grindstone 164 is about 100 mm. The larger the processing diameter of the processing tool, the more efficiently the peripheral edge of the spectacle lens is processed in a short time.

  The lens chuck shafts 102R and 102L are rotated by a lens rotating unit 120 having a motor 121 provided on the carriage 101. The lens chuck shafts 102R and 102L are moved in the X-axis direction (chuck shaft direction) by the X-axis direction moving unit 140, and the Y-axis direction (chuck shaft 102L) by the Y-axis direction moving unit 150 (inter-axis distance variation unit). , 102R and the grinding wheel spindle 161a are moved in the direction in which the distance between the axes is changed. The carriage 101 is mounted on a support base 141 that can move along shafts 103 and 104 extending in the X-axis direction, and is moved in the X-axis direction (the axial direction of the chuck shaft) by driving a motor 145. These constitute the X-axis direction moving unit 140. A Y-axis moving motor 150 is fixed to the support base 140. The rotation of the motor 150 is transmitted to a ball screw 155 extending in the Y axis direction, and the carriage 101 is moved in the Y axis direction by the rotation of the ball screw 155. Thus, the Y-axis direction moving unit 150 is configured.

  In FIG. 1, lens edge position detection units 300 </ b> F and 300 </ b> R are provided on the left and right above the carriage 101. A chamfering unit 200 is disposed on the front side of the apparatus main body 1.

  An auxiliary processing unit 400 for processing a mounting hole of the rimless frame in the lens is disposed behind the carriage unit 100. FIG. 2 is a configuration diagram of the auxiliary processing unit 400. A fixing plate 401 serving as a base of the unit 400 is fixed to a block 300a erected on the base 170 of FIG. A rail 402 extending in the Z-axis direction (direction orthogonal to the XY direction) is fixed to the fixed plate 401, and a movable support base 404 is slidably attached along the rail 402. The moving support base 404 is moved in the Z-axis direction when the motor 405 rotates the ball screw 406. A rotating support base 410 is rotatably held on the moving support base 404. The rotation support base 410 is rotated around its axis by a motor 416 via a rotation transmission mechanism. A rotating portion 430 is attached to the distal end portion of the rotating support base 410. A rotating shaft 431 orthogonal to the axial direction of the rotating support base 410 is rotatably held by the rotating portion 430. An end mill 435 as a drilling tool and a cutter (or grindstone) 436 as a grooving tool are coaxially attached to one end of the rotating shaft 431. The diameter of the end mill 435 is 0.8mm in diameter as a standard so as to be suitable for drilling, but the diameter 1.0mm, 1.2mm, 1.6mm, etc. can be selectively replaced and used. Has been. Note that the end mill 435 is also used as a small-diameter second finishing tool for partially cutting the lens periphery.

  FIG. 3 is a configuration diagram according to the spectacle lens processing data determination device. The processing data determination device 600 is a data input unit 601 for inputting target lens shape data and target lens design data acquired from a rim (lens frame) of an eyeglass frame, and the processing device 1 for processing the peripheral edge of the lens. An arithmetic unit 610 for determining processing data such as a target shape, a display 602 for displaying data, an input device 603 such as a keyboard, and the diameter of the peripheral processing tool of the processing apparatus 1 (the diameter of the finishing grindstone 164 and the end mill 435 The memory 605 for storing the diameter), the printer 606, the database 620 in which machining data including the target lens shape determined by the arithmetic unit 610 is registered (recorded and saved), and the data input and output of the machining apparatus 1 are performed. Input / output unit 607. A commercially available personal computer is used for the machining data determination apparatus 600 including the arithmetic unit 610, the display 602, the input device 603, and the like.

  The input / output unit 607 of the machining data determination device 600 is connected to the machining device 1, and machining data recorded and stored in the database is called out and output to the machining device 1. The data input unit 601 is connected to a communication unit 501 such as the Internet, and receives design data of a lens attached to a rim or spectacle frame designed by the frame manufacturer 500. The data input unit 601 can be connected to a tracing device 510 that traces the shape of the rim of the spectacle frame and the demo lens.

  Next, operations related to the machining data determination apparatus 600 will be described. In the frame maker 500, the rim of the spectacle frame and the shape of the lens attached to the rimless frame are designed by CAD, and the design data is input to the data input unit 601 through the Internet 501 or the like in a predetermined file format such as DXF. . Further, the shape of the demo lens attached to the spectacle frame is read by the trace device 510 and input to the data input unit 601. As the tracing device 510, an optical device is used in which a demo lens is picked up by a camera and a lens image picked up by the camera is processed to obtain a lens outer diameter shape. As this optical trace device, a well-known device described in Japanese Patent Application Laid-Open No. 2007-27599 can be used.

  The arithmetic unit 610 determines processing data including a target lens shape for causing the processing device 1 to process the periphery of the lens based on the lens shape data input via the data input unit 601 and the diameter of the finishing grindstone 164. Program to be stored. This program will be described below.

  The lens shape data input by the data input unit 601 is analyzed by the arithmetic unit 610. 4 and 5 are examples of the lens shape input to the data input unit 601. FIG. FIG. 4 is an example of a lens attached to the rimless frame. FIG. 5 shows an example of a lens attached to the rim of the spectacle frame. When the lens shape shown in FIG. 4 is input from the frame maker 500 as design data, the contour portion of the lens and the hole portion for attaching the rimless frame are segmented from the design data, and only the contour portion is extracted. For example, a line segment connected in a range of 10 to 80 mm in width and 10 to 60 mm in height is used as a contour portion of the outer diameter of the lens, and a hole portion HP existing in a range of 10 mm in diameter is provided inside the contour portion. , And extracted from the contour portion. The extracted contour portion is acquired as a target lens shape (hereinafter referred to as a basic target lens shape TS). The basic target lens TS is given in the form of radial length and radial angle data (rn, θn) (n = 1, 2, 3,... N) with reference to the geometric center FC. Also in FIG. 5, the extracted contour portion is acquired as the basic target lens TS.

  Note that the data input unit 601 may be responsible for the data acquisition function of the basic target lens TS and the hole portion HP. In addition, when the tracing device 510 has a function of acquiring a target lens shape, the basic target target lens shape TS is input from the data input unit 601 to the arithmetic unit 610.

  Next, the arithmetic unit 610 determines whether or not processing is possible without causing processing interference when the lens is processed into the basic target lens shape TS by the grindstone 164 included in the apparatus 1. In the basic target lens shape TS of FIG. 5, since there is no concave portion smaller than the diameter of the grindstone 164 in all regions, it is determined that machining is possible. When it is determined that processing is possible, a registration screen for registering the basic target lens TS in the database 620 as processing data is displayed on the display 602. FIG. 6 is an example of a registration screen displayed on the display 602. On the screen 700, a lens figure GTS for the right lens and a lens figure GTS for the left lens are displayed. The lens shape GTS for the left lens is displayed in a shape obtained by inverting the left and right with respect to the lens shape GTS for the right lens.

  In FIG. 6, an input field 702 for assigning a pattern number as an identification code for registering the target lens shape and the processed data to the database 620 so as to be readable is displayed on the upper side of the screen 700. In the input field 702, a pattern number is input by an input device 603 such as a keyboard. Further, the screen 700 is provided with fields 705, 706, and 707 for inputting the distance DBL between the left and right target lens shapes, the frame type, and the layout data of the chuck center. When the switch 704 is clicked, the processing data including the basic target lens TS and the layout data is registered in the database 620 in association with the identification code.

  When the registered machining data is called from the database 620, the machining data including the target lens shape (basic target lens TS) corresponding to the pattern number is called from the database 620 by inputting the pattern number on the pattern call screen (not shown). It is. The called data is output to the machining apparatus 1 connected to the arithmetic unit 610 via the input / output unit 607. In addition, when a work number corresponding to a pattern number is input on a job creation screen (not shown) and this is registered in the database 620, a work number instruction signal from the processing apparatus 1 is input via the input / output unit 607. As a result, the processing data of the target lens shape corresponding to the pattern number is called from the database 620 and output from the input / output unit 607 to the processing apparatus 1 side. The output of the data using the work number is performed by printing the barcode of the work number on the work mark from the printer 606 and then reading the barcode of the work mark with the barcode reader connected to the processing apparatus 1. Can be done efficiently.

  The case where the basic target lens shape TS input to the arithmetic unit 610 is FIG. 4 will be described. FIG. 7 is a diagram for explaining whether or not the basic target lens shape TS shown in FIG. 4 can be processed without causing processing interference at the radius Ra of the grindstone 164. In FIG. 7, between the points P1 and P2 on the basic target lens TS, the target lens region Ta other than the angle α with respect to the center FC has a convex shape. At each processing point of the target lens region Ta, when the grindstone 164 having the radius Ra is brought into contact, the grindstone 164 can be processed without interfering with other processing points. Each processing point is defined as a point Pm at which the grindstone 164 first contacts the ball shape when the axial distance L between the geometrical center FC of the ball shape and the center WC of the grindstone 164 is shortened for each radial angle θn of the ball shape. Desired. However, since the target lens region Tb in the range of the angle α from the point P1 to the point P2 has a concave shape (reverse R shape) smaller than the radius Ra of the grindstone 164, the grindstone 164 having the radius Ra is set at each processing point in this region. When contacted, the grindstone 164 interferes with other machining points, and machining becomes impossible.

  When it is determined that processing is not possible, an error message (warning) indicating that the target lens TS cannot be registered in the database 620 is displayed on the display 602, and registration processing in the database 620 is prohibited. The display 602 is also used as a warning device. By this warning, the operator can know that the target lens TS in FIG. 4 has a shape that cannot be processed by the grindstone 164 of the processing apparatus 1. Since the target lens TS determined to be unprocessable is not registered in the database 620, the processing using the target lens TS is not performed, and the trouble of processing the lens with an incorrect shape is avoided.

  Next, as shown in FIG. 7, even if the target lens TS has a concave shape, the hole processing end mill 435 included in the auxiliary processing unit 400 is used as the second peripheral processing tool for processing the peripheral processing of the lens. An embodiment in which the lens can be processed according to the target lens TS will be described.

  When the arithmetic unit 610 determines that there is a region Tb incapable of being processed by the grindstone 164 in the basic lens shape TS of FIG. 7, the arithmetic unit 610 obtains a corrected lens shape in which the unworkable region Tb is corrected to be machined by the grindstone 164 having the radius Ra. . As shown in FIG. 8, the arithmetic unit 610 has a region Tb in a range of an angle α from the point P1 to P2 (a range of a processing point where the grinding stone 164 interferes) so that the processing can be performed with the grinding stone 164 having the radius Ra. A correction target lens shape in which the concave shape recessed inward of Tb is corrected to be larger than the radius Ra of the grindstone 164 is determined. In other words, the arithmetic unit 610 determines a correction target shape by obtaining a shape in which the outer periphery of the grindstone 164 of the peripheral processing tool contacts one point in the non-processable region Tb. For example, the corrected target lens shape TC (rcn, θcn) (n = 1, 2, 3,..., N) corrected to the shape connected by the straight line Td is determined. The correction shape of the region Tb from the points P1 to P2 is not limited to a straight line, and may be a concave curve or a convex curve as long as the diameter is larger than the grindstone 164 having a radius R. The point may be one point instead of a plurality of points.

  Next, the arithmetic unit 610 determines the target lens portion of the region Tb from the points P1 to P2 as the trajectory TCb to be additionally processed by the end mill 435 as the second peripheral processing tool with respect to the correction target lens TC. The additional machining locus TCb is obtained from the radius vector data in the range of angles θp1 to θp2 in the radius vector data (rn, θn) of the basic target lens shape TS.

  When the end mill 435 having a diameter of 0.8 mm is used, if the concave shape of the additional machining locus TCb is larger than this diameter, the end mill 435 determines that additional machining is possible. When it is determined that processing is possible, a registration screen is displayed on the display 602.

  FIG. 9 is a screen example when registering the processing data of the basic target lens TS, the corrected target lens TC, and the additional processing trajectory TCb in the database 620. Similar to FIG. 6, the screen 700 displays a right lens lens figure GTS and a left lens lens figure GTS. On the target lens shape GTS, the correction portion Td for the basic target lens shape TS is displayed with a dotted line, and the additional processing locus TCb between the points P1 and P2 is displayed in a different color with respect to the portion without correction. Is done. By such display classification, the operator can know that the correction target shape TC and the additional processing locus TCb for the basic target shape TS exist. A hole HP extracted by the arithmetic unit 610 is also displayed in the target figure GTS.

  In FIG. 9, an input field 702 for assigning a pattern number as an identification code for registering the processing data including the target lens in the database 620 so as to be readable is displayed above the screen 700. In the input field 702, a pattern number is input by an input device 603 such as a keyboard. The screen 700 is provided with fields 705, 706, and 707 for inputting the distance DBL between the left and right target lens shapes, the frame type, and the layout of the chuck center. When the switch 704 is clicked, the processing data of the basic target lens TS, the correction target lens TC, and the additional processing locus TCb, the processing data of the hole HP, and other input data are registered in the database 620 in association with the identification code. .

  When calling up the registered target lens shape and pattern of processing data, the processing data including the target lens shape corresponding to the pattern number is called from the database 620 by inputting the pattern number on a pattern call screen (not shown). The called data is output to the processing apparatus 1 via the input / output unit 607. In addition, when a work number corresponding to a pattern number is input on the job creation screen and is registered in the database 620, the work number is used to call processing data from the database 620 as described above.

  The lens processing operation on the processing apparatus 1 side based on the processing data of the target lens shape in FIG. 9 will be described. Data such as the basic target lens TS, the corrected target lens shape TC, and the additional processing locus TCb transferred from the database 620 are stored in the memory of the apparatus 1. The lens LE held on the lens chuck shafts 102R and 102L is first roughly processed by the roughing grindstone 162 based on the correction target lens shape TC, and then finished by the finishing grindstone 164. In the finishing process, when the flat processing mode is set, the periphery of the lens LE is processed by the flat processing surface of the grindstone 164. Next, the auxiliary processing unit 400 is driven, and the lens LE processed by the correction lens shape TC is processed by the end mill 435 based on the additional processing locus TCb. Further, when there is position data and hole diameter data of the hole HP, the auxiliary processing unit 400 is driven based on the data, and the end mill 435 performs hole processing. Thus, even if the basic target lens TS is a concave shape (reverse R shape) smaller than the diameter of the grindstone 164, it can be processed appropriately.

  The finished surface of the lens LE processed by the end mill 435 may be rougher than the finished surface processed by the grindstone 164. In this case, it is possible to eliminate a difference from the processed surface by the grindstone 164 by performing well-known buffing on the part additionally processed by the end mill 435.

  The above embodiment can be variously modified. In the machining center, the machining data determination device 600 can be connected to a plurality of machining devices 1. If the diameter of the grindstone of the first finishing tool possessed by the processing apparatus 1 is smaller than that of the grindstone 164 shown in FIG. 1, for example, in the case of a grindstone having a diameter of 60 mm, the basic lens TS is formed by the grindstone of the first finishing tool. The determination of whether or not possible without interference is different. Moreover, the range of the non-processable area may be narrowed. In this case, as shown in FIG. 10, a screen 720 for changing the setting value of the diameter of the processing tool is displayed on the display 602, the setting value of the diameter of the first finishing tool is changed in the input field 721, and the value Is stored in the memory 605. Thereby, the processing data determination device 600 can appropriately determine whether or not the basic target lens TS can be processed according to the diameter of the finishing tool having a large diameter that the processing device 1 has.

  In the screen 720 of FIG. 10, the setting value of the diameter of the second finishing tool can also be changed in the input field 722. For example, the end mill 435 of the second finishing tool has a diameter of 1.0 mm, 1.2 mm, and 1.6 mm in addition to a diameter of 0.8 mm. The operator can change the set value in the input field 721 according to the diameter of the end mill 435. When the hole diameter to be processed in the lens is large, it is advantageous to change the end mill 435 to a larger diameter in accordance with it so that the hole processing can be performed quickly. However, when the diameter of the end mill 435 is increased, when the end periphery of the lens is additionally processed by the end mill 435, processing of a portion where the concave shape (reverse R shape) of the basic target lens TS is extremely small is performed. There are things you can't do. For example, as shown in FIG. 11, when a saw blade design is made between the point P1 and the point P2 of the basic target lens TS, and the concave portion has a shape smaller than the diameter of the end mill 435, the end mill Even if it is 435, additional processing cannot be performed according to the basic target lens TS. The arithmetic unit 610 determines whether or not it is possible to obtain the basic target lens TS by performing additional processing with the Edmill 435 with respect to the correction target lens TC based on the diameter of the end mill 435, and the basic target lens TS cannot be obtained. In such a case, a warning is displayed on the display 60. Thereby, the inconvenience of being processed in a state in which interference with the basic target lens shape TS is caused by the additional processing of the Edmill 435 can be avoided.

  In addition, for the concave portion of the basic target lens TS, a target target lens shape that approximates the basic target lens shape TS is obtained, leaving the shaded portion Te in FIG. 11 so as not to cause interference with the basic target lens shape TS by additional processing. As described above, the additional machining locus TCb may be determined. In this case, although it is slightly different from the designed basic target lens TS, it becomes possible to avoid the inability to process.

  Further, as the second finishing tool of the auxiliary processing unit 400, a finishing grindstone or a cutter having a smaller diameter (for example, a diameter of 10 to 20 mm) than the large diameter finishing grindstone 164 may be used instead of the end mill 435. . Even in this case, as described above, the setting value of the diameter of the finishing tool is input in the input field 722 on the screen of FIG. 10 and stored in the memory 605, so that additional processing can be performed by the arithmetic unit 610. Is determined.

It is a schematic block diagram of a spectacle lens periphery processing apparatus. It is a block diagram of an auxiliary processing unit. It is a block diagram concerning the spectacle lens processing data determination apparatus. It is an example of a lens shape. It is an example of a lens shape. It is an example of the registration screen displayed on a display. It is a figure explaining determination of whether it can be processed without processing interference by a grindstone. It is explanatory drawing of a correction | amendment lens shape and an additional process locus. It is an example of a registration screen. It is an example of a screen which changes the setting value of the diameter of a processing tool. It is an example of a target lens with a saw blade design.

DESCRIPTION OF SYMBOLS 1 Eyeglass lens peripheral processing apparatus 164 Finishing grindstone 435 End mill 501 Internet 510 Trace apparatus 600 Processing data determination apparatus 601 Data input unit 602 Display 603 Input device 605 Memory 607 Input / output unit 610 Arithmetic unit 700 Screen 702 Input column

Claims (8)

An eyeglass lens processing data determination method for determining processing data including a target lens shape for processing the periphery of a lens by an eyeglass lens periphery processing apparatus having a periphery processing tool for processing the periphery of an eyeglass lens,
A basic target obtaining step for obtaining a basic target,
A determination step of determining whether the lens can be processed into the basic target lens shape by the peripheral processing tool based on the diameter of the peripheral processing tool;
When it is determined by the determination step that processing is possible, the processing target shape determination step for determining the basic target lens as target target lens shape data by the peripheral processing tool;
An eyeglass lens processing data determination method comprising: In the spectacle lens processing data determination method according to claim 1,
The peripheral processing tool has a first peripheral processing tool having a large diameter and a second peripheral processing tool having a smaller diameter than the first peripheral processing tool.
The determination step includes a step of determining whether the lens can be processed into a basic target lens shape by the first peripheral edge processing tool based on the diameter of the first peripheral edge processing tool,
In the processing target shape determination step, when it is determined that the processing is impossible in the determination step, a correction target shape is determined in which a region that cannot be processed by the first peripheral processing tool is corrected so as to be processed by the first peripheral processing tool. And a step of determining an additional processing trajectory for processing the non-processable region into a basic target by further processing the non-processable region with the second peripheral processing tool. In the eyeglass lens processing data determination method according to claim 2,
A first registration step of registering the basic target lens shape in the database as target target lens shape data when it is determined in the determination step that processing is possible;
A second registration step of registering the correction target shape and additional processing locus determined by the processing target shape determination step in the database as processing data when it is determined by the determination step that processing is impossible;
An eyeglass lens processing data determination method comprising: In the spectacle lens processing data determination method according to claim 3,
The first registration step includes a step of registering the basic target lens in association with identification data for registering the basic target lens so as to be callable from a database;
The second registration step includes the step of registering the correction target lens shape and the processing data of the additional processing locus in the database in association with identification data for registering the correction target shape and processing data of the additional processing locus from the database so as to be callable. A method of determining spectacle lens processing data, comprising: In the eyeglass lens processing data determination method according to claim 2,
In the determining step, when the first peripheral edge processing tool is brought into contact with each processing point of the basic target lens, the lens is determined based on whether or not the diameter of the first peripheral processing tool interferes with another processing point. To determine whether or not
In the processing lens shape determining step, an area where the diameter of the first peripheral edge processing tool interferes with other processing points when the first peripheral edge processing tool comes into contact with each processing point of the basic target lens shape is added to the first peripheral edge processing tool. Obtaining as a non-workable region by a tool, and correcting the concave shape recessed inside the basic lens shape with respect to the determined non-workable region to a shape larger than the radius of the first peripheral edge processing tool, and determining the correction lens shape Characteristic spectacle lens processing data determination method. In the spectacle lens processing data determination method according to claim 5,
The eyeglass lens processing data determination method is characterized in that the processing lens shape determination step determines a correction lens shape by obtaining a shape in which the processing point that the first peripheral processing tool comes into contact with is one in the non-processable region. . In the eyeglass lens processing data determination method according to claim 2,
The processing lens shape determining step includes a step of determining whether or not the non-processable region can be processed into a basic target lens shape by the second peripheral edge processing tool, and when the processing is impossible, the basic processing is performed by processing the second peripheral edge processing tool. An eyeglass lens processing data determination method, wherein an additional processing locus approximated to a target lens shape is determined based on a diameter of the second peripheral edge processing tool. In the spectacle lens processing data determination method according to claim 1,
A step of warning when it is determined that machining is impossible by the determination step, and a registration step of registering the basic target lens shape as processing target lens data in a database when it is determined that processing is possible by the determination step. A registration step of registering the basic target lens in association with identification data for registering the basic target lens so as to be callable from a database.

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