JP3673746B2 - Eyeglass lens processing method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spectacle lens processing method and apparatus for forming a hole, a notch, a groove or the like for mounting a part on an outer peripheral end face of a spectacle lens.
[0002]
[Prior art]
In recent years, rimless spectacles (rimless spectacles) have attracted attention due to advantages such as a wide field of view and light weight. As for such edgeless type glasses, a type called nyroll is hung around the lower part of the lens with a nylon thread, and a type called a two-point or three-piece type that is formed by penetrating a screw hole in the lens and stopping with a screw that penetrates the hole. In addition, there is a so-called pin-feel type in which a non-through hole is provided in the lens edge surface, and a pin-like protrusion of the spectacle lens holding member is inserted and fixed thereto.
[0003]
Each type of rimless eyeglasses mentioned above had its own characteristics, but in order to ensure sufficient effective field of view, durability, aesthetics, weight reduction, etc., for lenses of various thicknesses and materials. However, it was not always easy to design, and it was not always satisfactory from the viewpoint of processing cost.
[0004]
Therefore, in recent years, there has been proposed a rimless spectacle of a type in which a notch or the like is provided at the edge of the spectacle lens and an attachment member is fitted into the notch or the like. As this type of spectacles, for example, those described in Japanese Patent No. 2997438 (Japanese Patent Laid-Open No. 10-228000), those described in Utility Model Registration No. 2602605 (Japanese Utility Model Publication No. 7-32620), or The thing of Unexamined-Japanese-Patent No. 2000-147435 etc. are known.
[0005]
[Problems to be solved by the invention]
By the way, the spectacle lens usually has a different frequency for each wearer, and the shape of the lens also depends on the frame shape selected by the wearer. For this reason, it is common that thickness and a shape differ individually. Therefore, when processing a lens for rimless glasses according to the above-mentioned proposal with a numerically controlled processing device or the like, it is necessary to perform complicated positioning work for each one according to the shape and thickness, There was a problem that processing efficiency was remarkably bad.
[0006]
The present invention has been made under the above-described background, and it is easy to form a hole for mounting a part, a notch, a groove, or the like on the lens outer peripheral end face or the like for a wide variety of lens-shaped lenses. It is an object of the present invention to provide a spectacle lens processing method and apparatus that can be accurately and reproducibly operated.
[0007]
    As a means to solve the above problemsThe first means isIn a spectacle lens processing method of processing a spectacle lens of a predetermined shape by a processing device, a spectacle lens holding jig attaching step of attaching a spectacle lens holding jig to a predetermined position of the spectacle lens;
    The eyeglass lens holding jig is provided near the processing position of the processing device.The eyeglass lens holding jig is mounted on the fixing portion, and the eyeglass lens holding jig is attached to the fixing portion, and the eyeglass lens holding device is positioned by adjusting the vertical and horizontal positions thereof. By doing so, the spectacle lens is fixed to the fixing device so as to have a predetermined positional relationship with the fixing portion.A positioning reference plate having a left and right reference plane and an upper and lower reference plane provided in the vicinity of the processing apparatus, and the glasses on the left and right reference planes and the upper and lower reference planes of the positioning reference plate; When the predetermined position of the lens is brought into contact with the left and right reference planes and the upper and lower reference planes of the positioning reference plate configured so that the processing portion of the spectacle lens has a certain positional relationship with the processing reference position of the processing apparatus. A positioning step of positioning the spectacle lens in the vertical and horizontal directions by adjusting a vertical and horizontal position of the spectacle lens fixing device, and the spectacles positioned by the positioning step And a processing step of processing the lens by the processing device.The second means isAs the spectacle lens holding jig, the spectacle lens processing standard is used in advance as a jig for fixing the spectacle lens to the glazing processing apparatus before the spectacle lens glazing process for processing the spectacle lens to match the spectacle frame shape. A spectacle lens holding jig attached to a position is used, and the spectacle lens holding jig attaching step is performed before the spectacle lens glazing process.Take the first meansThis is a spectacle lens processing method.The third means isThe processing device for processing the spectacle lens after performing the lashing processing is a numerically controlled cutting device.1st or 2nd meansThis is a spectacle lens processing method.The fourth means isA processing device for processing a spectacle lens, and a spectacle lens fixing device provided in the vicinity of a processing position of the processing device, as a jig for fixing the spectacle lens to the lash processing device during the lashing processing A fixing portion for fixing a spectacle lens holding jig that is attached in advance to a processing reference position of the spectacle lens, and fixing the spectacle lens holding jig to the fixing portion;For the fixed partAn eyeglass lens fixing device having a position adjusting mechanism for fixing the eyeglass lens in a predetermined positional relationship and adjusting the position of the fixed eyeglass lens in the vertical and horizontal directions with respect to the processing device, and in the vicinity of the processing position of the processing device A positioning reference plate having a provided left and right reference plane and an upper and lower reference plane, and when the predetermined position of the spectacle lens is brought into contact with the left and right reference plane and the upper and lower reference plane of the positioning reference plate, the processing of the spectacle lens A positioning reference plate configured to have a fixed positional relationship with a processing reference position of the processing apparatus, and the position of the spectacle lens is adjusted by adjusting the vertical and horizontal position of the spectacle lens by the spectacle lens fixing device. By bringing a predetermined position of the spectacle lens into contact with the left and right reference planes and the upper and lower reference planes of a reference plate, the spectacle lens is vertically and horizontally Positioning is performed, a eyeglass lens processing apparatus characterized by processing the eyeglass lens by the processing device.
[0008]
According to the above first, second and fourth means,By attaching a spectacle lens holding jig to a predetermined position of the spectacle lens, fixing the holding jig to the fixing device, and bringing the predetermined position of the spectacle lens into contact with the predetermined position of the positioning reference plate, the processing unit of the spectacle lens is The position can be determined so as to have a certain positional relationship with the processing reference position of the processing apparatus. Thereby, even if the thickness and shape of the lens are different, the processing portion of the lens can be easily and quickly fixed at the processing position.Third meansAccording to this, cutting by numerical control can be performed efficiently.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 is a flowchart showing a procedure of a spectacle lens processing method according to an embodiment of the present invention, FIG. 2 is a diagram showing a configuration of a spectacle lens processing apparatus according to an embodiment of the present invention, FIG. 3 is an enlarged view of FIG. FIG. 4 is a diagram showing a configuration of a spectacle lens holding jig, FIG. 5 is a diagram showing an example of groove processing, and FIG. 6 is a diagram showing an example of eyeglasses to which an armor or a bridge is attached after the groove processing. Hereinafter, an eyeglass lens processing apparatus according to an embodiment of the present invention will be described first with reference to these drawings, and then a spectacle lens processing method according to an embodiment of the present invention will be described.
[0010]
In FIG. 2, the spectacle lens processing apparatus according to this embodiment performs grooving on the edge portions of the left and right spectacle lenses 100 by a numerically controlled cutting apparatus 200. That is, after positioning and fixing by the positioning reference plate 300 and the fixing device 400 so that the processing part of the spectacle lens 100 has a fixed positional relationship with the processing reference position of the processing device 200, for example, the position of the cutting blade 201, Process.
[0011]
The cutting device 200 performs predetermined processing such as grooving or drilling while rotating the cutting blade 201 in response to a processing command signal from a computer (not shown).
[0012]
As shown in FIG. 3, the positioning reference plate 300 is a metal block having a substantially trapezoidal cross section. When a surface facing the cutting blade 201 is an upper surface 301, a lower surface 302 substantially parallel to the upper surface, It has a front surface 303 (the rear surface is not shown) and left and right reference surfaces 305 and 306 which are left and right surfaces. The left and right reference surfaces 305 and 306 are inclined surfaces (inclination angles of 15 to 45 ° with respect to a surface perpendicular to the upper and lower surfaces), and these surfaces are used to restrict the position in the left and right direction. In addition, upper and lower reference surfaces 307 and 308 are provided at the lower ends of the left and right reference surfaces 305 and 306 to restrict the position in the vertical direction.
[0013]
The upper and lower reference surfaces 307 and 308 are also inclined surfaces, which are inclined by 10 to 30 ° with respect to the upper and lower surfaces 301 and 302, respectively. A predetermined position of the spectacle lens 100, for example, an end surface of the processing part is brought into contact with the left and right reference surfaces 305 and 306, and an optical surface of the processing part of the spectacle lens 100 is contacted with the upper and lower reference surfaces 307 and 308. When the position of the spectacle lens 100 is determined so that one edge is brought into contact, the position of the processing part of the spectacle lens 100 inevitably has a specific positional relationship with the reference position of the cutting blade 201 of the cutting apparatus 200. It is comprised so that it may become.
[0014]
In the positioning reference plate 300, a support shaft 310 is attached to the lower surface 302, the support shaft 310 is removably attached to the retracting mechanism portion 320, and the retracting mechanism portion 320 is attached to the front / rear moving table 330. . The front / rear moving table 330 is attached to the front / rear moving mechanism 340 so as to be movable back and forth. The front / rear moving mechanism 340 is fixed to the fixed table 350. The front / rear moving table 330 can adjust the front / rear position of the position reference plate 300 to a designated position accurately by rotating / adjusting the front / rear position adjustment knob 341.
[0015]
When set to the state at the time of the positioning operation, the positioning reference plate 300 is necessarily configured such that the vertical and horizontal positions of the positioning reference plate 300 have a specific positional relationship with respect to the processing reference position of the processing apparatus 200. Only the above-described back-and-forth moving table 330 can be changed. As will be described later, the front / rear position of the front / rear moving table 330 is determined from the lens shape data, edge thickness data, processing position data, etc. of the spectacle lens, and therefore a computer having a program for determining the position of the front / rear moving table 330 from these values. Based on this value, the front / rear position adjustment knob 341 is rotationally adjusted and set. After determining the position of the positioning reference plate 300 in this manner, the eyeglass lens 100 is positioned by bringing the end surface of the spectacle lens held by the spectacle lens fixing device 400 into contact with the above-described reference surface of the positioning reference plate 300. Made.
[0016]
At the time of processing, the positioning reference plate 300 is retracted to a position that does not interfere with the processing of the spectacle lens 100 by the cutting blade 201 by the retracting mechanism unit 320. That is, the support shaft 310 is moved in the direction in which the clamp pin 321 is guided by the guide groove 322 and is disposed outside the region of the machining locus of the cutting blade 201.
[0017]
The spectacle lens fixing device 400 holds and adjusts the position of the spectacle lens 100 and brings the end face of the spectacle lens 100 into contact with the reference surface of the positioning reference plate 300 described above, whereby the position of the spectacle lens 100 during processing is determined. Is fixed.
That is, as shown in FIG. 4, the eyeglass lens holding jig 110 is attached to the eyeglass lens 100 at a predetermined position during the edging process. The spectacle lens fixing device 400 includes a spectacle lens mounting portion 410 that mounts the spectacle lens holding jig 110 while the spectacle lens holding jig 110 is attached.
[0018]
The spectacle lens mounting portion 410 has a mounting hole 411, and the spectacle lens holding jig 110 is mounted in the mounting hole 411 via a rotation stopper 412. That is, the rotation stopper 412 is fitted in the mounting hole 411 while being fixed in the rotation direction, although not shown. A rotation stop protrusion 412 a is formed on the rotation stopper 412. Therefore, when the spectacle lens holding jig 110 is inserted into the mounting hole 411, the rotation stop projection 412 a is fitted into the bearing groove 11 provided in the spectacle lens holding jig 110 and is inserted into the mounting hole 411. Installed. In this case, the spectacle lens holding jig 110 is attached so that the center thereof is positioned at a specific position of the spectacle lens 100, usually the processing center, and the direction of the bearing groove 111 is also determined in a specific direction. Therefore, if at least one position of the spectacle lens is specified in a state of being attached to the mounting portion 410, each position can be specified by lens shape data or the like.
[0019]
The spectacle lens mounting portion 410 is attached to the vertical adjustment shaft 413, and the vertical adjustment shaft 413 is attached to the bearing box 420 so as to be movable up and down (Z-axis direction). The bearing box 420 is attached to the left / right moving mechanism 430 so as to be movable left / right (X-axis direction). The left / right moving mechanism 430 is attached to the base 500. The bearing box 420 is provided with a lock knob 421 that locks the movement of the vertical adjustment shaft 413, and the left-right movement mechanism 430 is provided with a lock knob 431 that locks the left-right movement. The bearing box 420 is attached to the left / right moving mechanism 430 so as to be inclined at a predetermined angle (0 to 30 °) with respect to the vertical direction. Since this mounting angle is preferably set to an appropriate value according to the base curve of the lens, an example in which this mounting angle is fixed is described in this embodiment, but an angle adjusting mechanism may be provided as necessary. .
[0020]
Further, a fixed clamp bar 440 is attached to the vertical adjustment shaft 413, and a movable clamp bar 441 is attached to the fixed clamp bar 440 so as to be movable up and down. The tip of the movable clamp bar 441 is connected to the spectacle lens mounting portion. A clamp head 442 is attached to the spectacle lens mounting portion 410 side at the tip thereof. The movable clamp bar 441 is movable up and down through two guide poles 443 having lower ends fixed to the fixed clamp bar 440. Further, the other side of the screw rod 444 screwed into the fixed clamp bar 440 on one side is fixed to the movable clamp bar 441 so as to be rotatable. Accordingly, by rotating the knob 445 formed on the other end of the screw rod 444, the movable clamp bar 441 is moved, and the clamp head 442 is attached to the spectacle lens 100 mounted on the spectacle lens mounting portion 410. Press to fix this.
[0021]
In the eyeglass lens fixing device 400, the position of the eyeglass lens 100 in the rotational direction (circumferential direction) and the position in the front-rear direction (Y-axis direction) are uniquely determined with the eyeglass lens 100 fixed. However, the position in the vertical direction (Z-axis direction) and the horizontal direction (X-axis direction) can be adjusted. Positions in the vertical direction (Z-axis direction) and the horizontal direction (X-axis direction) are positioned by the positioning reference plate 300.
[0022]
That is, while the spectacle lens 100 is fixed to the spectacle lens fixing device 400, the spectacle lens mounting part 410, the vertical clamp shaft 413 to which the fixed clamp bar 440, the movable clamp bar 441, and the like are moved, and at the same time, the left / right moving mechanism The eyeglass lens 100 is positioned by moving the vertical adjustment shaft 413 left and right together with the bearing box 420 by 430 and bringing the end face of the eyeglass lens 100 into contact with the above-described reference surfaces of the positioning reference plate 300. As a result, a specific position of the spectacle lens 100, for example, a processing site, has a specific relationship with the processing reference position of the processing apparatus 200. Therefore, predetermined processing can be performed by sending a predetermined processing command signal to the processing apparatus 200.
[0023]
The example shown in FIG. 2 is an example in which the left and right lenses are simultaneously positioned to process the armor mounting groove and the bridge mounting groove. That is, as shown in FIG. 5 and FIG. 6, the armor mounting groove means a groove 101 that fits and fixes the armor 150 to the end portion on the ear side of the spectacle lens 100 after the edging process. Further, the bridge mounting groove means a groove for fitting both ends of the bridge 160.
[0024]
In this process, after the positioning described above, the positioning reference plate 300 is retracted, and for example, the lens on the left side of the drawing is cut with the cutting blade 201 to form a groove for attaching the alloy. Next, the cutting blade 201 is moved to process the right lens. When this processing is completed, the left and right lenses are then exchanged, and the groove for attaching the bridge is processed in the same manner. In this case, the processing data is sent from a computer (not shown) as described above.
[0025]
Next, the spectacle lens processing method according to the embodiment will be described with reference to FIG. In FIG. 1, a lens means a raw round lens. The unprocessed round lens having a predetermined power and size is selected based on the prescription of the eye of the spectacle wearer, other necessary prescriptions, and shape data of the spectacle frame.
[0026]
The layout
As a premise for selecting the round lens, first, a lens layout is made. The lens layout means that the round lens is trimmed to fit the frame shape and fitted into the frame, and when the spectacle wearer wears the frame, the wearer's pupil center matches the optical center of the lens. This is to arrange the position of the optical center in the sliding shape (= lens shape = geometric shape). That is, in general, when the spectacle frame is worn due to the difference between the shape and size of the frame and the face size of the wearer, the pupil position matches the center position of the frame geometric shape (lens lens shape). Since it is rare, if the pupil position is made coincident with the geometric center of the lens, it will be displaced from the optical center, so an arrangement for correcting it must be made. In other words, the amount of deviation between the geometric center and the optical center in the target lens shape is obtained, the geometric center is displaced from the optical center of the round lens by the amount of deviation, and the geometric center is set as the center of the shape intended for edge processing. .
[0027]
blocking
Next, blocking is performed based on the result of the layout. This blocking refers to a spectacle lens holding jig 110 (see FIG. 4) for fixing a lens to a lens fixing shaft of the edging machine when the edging process is performed at a predetermined position of the spectacle lens. For example, it is attached to the optical center or geometric center position of the lens.
[0028]
The eyeglass lens holding jig 110 is attached to the eyeglass lens 100 with a strong and thin double-sided tape interposed between the eyeglass lens 100 and the eyeglass lens holding jig 110. In this case, since the spectacle lens is cut while applying cutting water, it is necessary that the double-sided tape is rich in water resistance, and further, the lens may be shaken or displaced when the lens is cut or when the lateral groove is processed. In order to avoid this, the thickness should be 0.5 mm or less. As a method of attaching the spectacle lens holding jig 110 to the spectacle lens 100, another method may be used. The surface to be attached may be the lens convex surface side or the concave surface side.
[0029]
Oval cutting
The lens shape cut is a process of edging a round lens in accordance with the frame shape. The eyeglass lens holding jig 110 attached to the spectacle lens 100 is attached to the lens fixing shaft of the edging machine and rotated. It is processed by a method such as shape copying grinding.
[0030]
Lens clamp
With the eyeglass lens holding jig attached, the eyeglass lens 100 that has undergone the edging process is attached to the eyeglass lens attachment portion 410, the moving clamp bar 441 is lowered, and the clamp head 442 is pressed against the eyeglass lens 100. The spectacle lens 100 is fixed. Note that the method for fixing the spectacle lens 100 is not limited to the above-described embodiment, and an air method, a hydraulic method, or an electric motor method may be used in addition to the screw type clamp.
[0031]
Reference plate set (bridge side)
When the spectacle lens 100 is fixed, the positioning reference plate 300 is set. That is, the front / rear position of the positioning reference plate 300 is accurately adjusted to the designated position by rotating the front / rear position adjustment knob 341. This position differs depending on the target lens shape and size. In this embodiment, the operator automatically causes the computer to read the work instruction so that the set position is automatically displayed on the computer display. The operator sets the position of the positioning reference plate 300 according to the value. Note that this adjustment may be performed manually instead of using an automatic adjustment mechanism directly connected to a computer.
[0032]
Positioning (bridge side)
Next, the clamped spectacle lens 100 is brought into contact with the reference surface of the positioning reference plate 300 and positioned. The NC processing machine accurately captures the position of the positioning reference plate 300 as a reference point in a three-dimensional space, and the cutting blade 201 moves according to each item based on the position of the positioning reference plate. Has been programmed. For this reason, the lens set according to the positioning reference plate can be processed into a predetermined shape at a predetermined position.
[0033]
Note that the abutting part of the positioning reference plate is pointed so that it touches the lens at one point, but even if the lens is slightly scratched by this point, this part is cut by the next process cutting. There is no particular problem. The reference planes 307 and 308 of the positioning reference plate 300 escape from the horizontal plane at an angle of about 20 degrees in this embodiment. For this reason, for most lens curves of the convex shape of the lens, the lens edge and the reference surface are in contact at one point.
[0034]
Reference plate offset
When the positioning is completed, the positioning reference plate 300 is retracted outside the region of the machining locus of the cutting blade 201. In this embodiment, the positioning reference plate 300 is pushed down and then fixed by being rotated at a right angle. However, the method is not particularly limited. As a result, any method can be used as long as the positioning reference plate 300 can be shifted to a position that does not interfere with the cutting blade during processing.
[0035]
NC cutting on bridge side
Next, the machining blade 200 moves the cutting blade 201 to a position determined in the Z-axis direction from the contact position of the positioning reference plate 300 by numerical control, and performs constant distance cutting in the X-axis direction. In this embodiment, the cutting direction is moved only in the X-axis direction parallel to the datum line, but the machining direction is not particularly limited. It may be moved smoothly on the XY plane, or may be moved to a previously determined shape (for example, in an oval shape). Further, not only the XY plane but also the Z direction may be moved together. By doing so, it becomes possible to provide grooves of various shapes in the lens with a single cutter.
[0036]
In this embodiment, the rotational speed of the cutting blade 201 is 1,000 to 3,000 r. p. m. However, it is not particularly limited by the type of glass to be processed or the shape of the cutter. During cutting, it is desirable to cool with air or cutting water in order to prevent the lens from melting due to processing heat.
[0037]
Lens unclamp
Loosen the clamp that holds the lens and remove the lens.
Lens left and right exchange
The left and right lenses fixed to the lens fixing device 400 are exchanged with each other. In that case, set it so that the vertical direction does not change.
Lens clamp
Fix the replaced lens in the same manner as above.
Reference plate on set
The retracted positioning reference plate 300 is returned to the set position.
Reference plate position set (Yoroi side)
The positioning reference plate 300 is set to a position where it is stable. The operator sets the position of the positioning reference plate 300 in accordance with the set value on the rough side displayed on the computer display.
[0038]
Positioning (Yoroi side)
In the same manner as described above, the spectacle lens is fixed at a predetermined position by bringing the spectacle lens 100 into contact with the reference surface of the positioning reference plate 300.
Reference plate offset
In the same manner as described above, the plate 300 is retracted to the positioning reference plane.
NC side cutting
Similarly to the above, by numerical control, it moves from the contact position of the cutting blade 201 positioning reference plate 300 to a position determined in the Z-axis direction, and performs constant distance cutting in the X-axis direction.
Lens removal
Loosen the clamp of the spectacle lens 100 and remove the lens.
[0039]
According to the above-described embodiment, the grooving jig is positioned and fixed without removing the spectacle lens holding jig fixed to the lens where the lashing process is finished, while the jig remains fixed. It can be performed. As a result, the groove processing for processing the groove from the end face of the spectacle lens toward the inside of the lens can be processed accurately and with good reproducibility by simple operation on a wide variety of lens lenses. . Furthermore, it is possible to improve the efficiency of a series of operations from the balling process to the groove process of the material lens.
[0040]
FIG. 7 is a diagram showing a configuration of an eyeglass lens processing apparatus according to another embodiment of the present invention. The spectacle lens processing apparatus shown in FIG. 7 is an example of an apparatus in which the spectacle lens 100 is held with its convex surface side facing upward and the cutting blade 201 is applied from the convex surface side of the lens for cutting. That is, in the above-described embodiment, an example in which the convex surface of the lens 100 is held downward and processed from the concave surface side is described. However, in the embodiment described below, the surface of the lens 100 is formed. This is an example of an apparatus which is held and processed in reverse to the case of the above-described embodiment.
[0041]
In this embodiment, since the lens surface is merely held in the opposite direction to the above-described embodiment, the structure is also composed of the same parts and the parts that are functionally substantially the same although the structures of the details are different. Therefore, in the following description, the same reference numerals are assigned to the same parts as those in the above-described embodiment, and the functionally same parts are different in the structure of the details but are the same as those in the above-described embodiments. In the following description, a numerical value of 1000 is added to the numerical value of the case code, and description that seems to overlap is omitted as appropriate.
[0042]
In FIG. 7, the spectacle lens processing apparatus according to this embodiment is shown in a circle indicated by a dotted line in FIG. 7 by a numerically controlled cutting apparatus 200 at the edge portions of the left and right spectacle lenses 100 subjected to edging. It is used when performing groove processing or the like having an opening on the convex surface side.
[0043]
The positioning reference plate 1300 is attached to the support shaft 310 with the positioning reference plate 300 in the above-described embodiment (see FIGS. 2 and 3) upside down, and the other structure is the case of the above-described embodiment. Is the same. Therefore, in FIG. 7, a portion corresponding to the reference surface 307 of the above-described embodiment is a reference surface 1307, and in the drawing, the portion where the end surface of the lens 100 is in contact corresponds to the reference surface 308 of the above-described embodiment. A reference surface is formed, and positioning is performed by bringing the processed portion of the lens 100 into contact with the reference surface. The retraction mechanism 320, the front / rear moving base 330, the front / rear moving mechanism 340, the fixed base 350 and the like to which the support shaft 310 is attached are the same as those in the above-described embodiment.
[0044]
The spectacle lens fixing device 1400 has the following configuration. That is, the left / right moving mechanism 1430 is fixed to the base 500. A bearing box 420 is fixed to the left / right moving mechanism 1430 by an L-shaped bracket for attachment. A vertical adjustment shaft 1413 is attached to the bearing box 420 so as to be movable up and down (Z-axis direction). The bearing box 1420 is provided with a lock knob 1421 for locking the movement of the vertical adjustment shaft 1413, and the left / right moving mechanism 1430 is provided with a lock knob 1431 for locking the left / right movement. The bearing box 1420 is attached to the left / right moving mechanism 1430 so as to be inclined at a predetermined angle (0 to 30 °) with respect to the vertical direction. Since this mounting angle is preferably set to an appropriate value according to the base curve of the lens, an example in which this mounting angle is fixed is described in this embodiment, but an angle adjusting mechanism may be provided as necessary. .
[0045]
A fixed clamp bar 1440 is attached to the vertical adjustment shaft 413 by a fixing bracket 1414, and a movable clamp bar 1441 is attached to the fixed clamp bar 1440 so as to be movable up and down. That is, the moving clamp bar 1441 is provided with two guide poles 1443 having a lower end fixed to the fixed clamp bar 1440 so as to be movable in the vertical direction. Further, the other side of the screw rod 1444 screwed to the movable clamp bar 1441 is rotatably fixed to the fixed clamp bar 1440, and a knob formed at the end of the other side of the screw rod 1444. The moving clamp bar 1441 is moved up and down by rotating 1445.
[0046]
In addition, a spectacle lens mounting portion 410 is mounted and fixed to the distal end portion of the fixed clamp bar 1440. Further, a clamp head 1442 is fixed to the tip of the movable clamp bar 1441. Therefore, by rotating the knob 1445 of the screw rod 1444, the moving clamp bar 1441 is moved, and the clamp head 1442 is pressed against the spectacle lens 100 mounted on the spectacle lens mounting portion 410 to fix it.
[0047]
The spectacle lens fixing device 1400 uniquely determines the position of the spectacle lens 100 in the rotation direction (circumferential direction) and the position in the front-rear direction (Y-axis direction) while the spectacle lens 100 is fixed. However, the position in the vertical direction (Z-axis direction) and the horizontal direction (X-axis direction) can be adjusted. Positions in the vertical direction (Z-axis direction) and the horizontal direction (X-axis direction) are positioned by the positioning reference plate 1300. According to this embodiment, positioning can be performed with the convex surface of the lens 100 facing upward, and processing as shown in the dotted circle in FIG. 7 can be performed efficiently.
[0048]
In the above-described embodiment, positioning is performed by bringing a predetermined position of the spectacle lens into contact with a predetermined position of the positioning reference plate, but instead of using the positioning reference plate, a predetermined position of the spectacle lens is used. You may use the contact-type or non-contact-type position detection means which can detect the position when becomes a specific position. That is, for example, a position detection means having a position detection probe that sends position information of a contact point when an object comes into contact with the probe may be used. Further, instead of the contact-type position detection probe, position detection means using a non-contact position detection using electromagnetic waves or the like may be used.
[0049]
【The invention's effect】
As is apparent from the above description, the present invention provides a predetermined spectacle lens on the reference plane of the positioning reference plate by the spectacle lens fixing device that can fix and adjust the position of the spectacle lens to which the spectacle lens holding jig is attached. By adjusting the position and making contact, the processing part of the spectacle lens is positioned so as to have a certain positional relationship with the processing reference position of the processing device. On the other hand, a spectacle lens processing method and apparatus that enable accurate and reproducible processing for forming parts mounting holes and grooves on the lens outer peripheral end face and the like with a simple operation have been obtained.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a procedure of a spectacle lens processing method according to an embodiment of the present invention.
FIG. 2 is a diagram showing a configuration of an eyeglass lens processing apparatus according to an embodiment of the present invention.
FIG. 3 is an enlarged view of FIG. 2;
FIG. 4 is a diagram showing a configuration of a spectacle lens holding jig.
FIG. 5 is a diagram showing an example of groove processing.
FIG. 6 is a view showing an example of eyeglasses to which an alloy or a bridge is attached after grooving.
FIG. 7 is a diagram showing a configuration of an eyeglass lens processing apparatus according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 ... Eyeglass lens, 200 ... Processing apparatus, 300 ... Positioning reference plate, 400 ... Eyeglass lens fixing device.

Claims (4)

In a spectacle lens processing method for processing a spectacle lens of a predetermined shape by a processing device,
A spectacle lens holding jig mounting step for mounting a spectacle lens holding jig at a predetermined position of the spectacle lens;
The fixing device is provided in the vicinity of the processing position of the processing apparatus and fixes the spectacle lens holding jig. The spectacle lens holding jig is attached to the fixing portion, and the vertical and horizontal direction positions thereof are adjusted. A spectacle lens for fixing the spectacle lens to the fixing device so as to have a predetermined positional relationship with the fixing portion by attaching the spectacle lens holding jig to the fixing portion of the spectacle lens fixing device to be positioned Fixing process;
A positioning reference plate having a left and right reference surface and an upper and lower reference surface provided in the vicinity of the processing device, wherein the predetermined position of the spectacle lens is in contact with the left and right reference surfaces of the positioning reference plate and the upper and lower reference surfaces Then, a predetermined position of the spectacle lens on the left and right reference planes and the upper and lower reference planes of a positioning reference plate configured so that a processing portion of the spectacle lens has a fixed positional relationship with a processing reference position of the processing apparatus. Positioning step of adjusting the vertical and horizontal directions of the spectacle lens by the spectacle lens fixing device so that the eyeglass lens contacts ,
A spectacle lens processing method comprising: processing a spectacle lens positioned by the positioning step by the processing device. As the spectacle lens holding jig, the spectacle lens processing standard is used in advance as a jig for fixing the spectacle lens to the glazing processing apparatus before the spectacle lens glazing process for processing the spectacle lens to match the spectacle frame shape. 2. The spectacle lens processing method according to claim 1 , wherein a spectacle lens holding jig attached at a position is used, and the spectacle lens holding jig attaching step is performed before the spectacle lens glazing process. 3. The spectacle lens processing method according to claim 1 , wherein the processing apparatus that processes the spectacle lens after performing the lashing process is a numerically controlled cutting apparatus. A processing device for processing eyeglass lenses;
A spectacle lens fixing device provided in the vicinity of a processing position of the processing device, which is attached in advance to a processing reference position of the spectacle lens as a jig for fixing the spectacle lens to the lash processing device during the lashing processing. A fixing portion for fixing the spectacle lens holding jig, and fixing the spectacle lens to the fixing portion in a predetermined positional relationship by fixing the spectacle lens holding jig to the fixing portion. An eyeglass lens fixing device having a position adjusting mechanism for adjusting the position of the fixed eyeglass lens relative to the processing device in the vertical and horizontal directions;
A positioning reference plate having a left and right reference surface and an upper and lower reference surface provided in the vicinity of a processing position of the processing device, wherein the predetermined position of the spectacle lens is set on the left and right reference surfaces and the upper and lower reference surfaces of the positioning reference plate. A positioning reference plate configured so that the processing part of the spectacle lens is in a fixed positional relationship with the processing reference position of the processing device when brought into contact;
By adjusting the vertical and horizontal positions of the spectacle lens by the spectacle lens fixing device and bringing the predetermined position of the spectacle lens into contact with the left and right reference planes and the vertical reference plane of the position reference plate, A spectacle lens processing apparatus that performs positioning in the left-right direction and processes the spectacle lens by the processing apparatus.

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