JP2018122395A - Spectacle lens processing device and processing control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spectacle lens processing device capable of properly suppressing an adverse effect caused by a frictional force between a lens and a rim, and a processing control program.SOLUTION: A spectacle lens processing device comprises a specular working tool and a control part. The specular working tool applies specular working to a lens LE. The control part controls the spectacle lens processing device. The control part makes the specular working tool apply the specular working to a contact area, which is brought into contact with a rim of a spectacle frame, of an end surface part of the lens LE including a bevel 70 for fitting the lens LE into the rim.SELECTED DRAWING: Figure 8

Description

  The present disclosure relates to a spectacle lens processing apparatus and a processing control program for processing a peripheral edge of a spectacle lens.

  2. Description of the Related Art Conventionally, a spectacle lens processing apparatus that performs mirror processing on the peripheral edge of a spectacle lens is known. For example, the spectacle lens processing apparatus described in Patent Document 1 can partially perform mirror surface processing within a range designated by the user in the lens periphery after finishing. Conventional mirror finishing is performed in order to improve the aesthetics of the lens after processing. The processed lens is fitted into the rim of the frame, thereby completing the spectacles.

JP 2001-353649 A

  By the way, various adverse effects may occur due to the frictional force between the lens and the rim. For example, when stress concentrates on a part of the contact area between the lens and the rim, the lens slightly rubs against the rim against the frictional force, and an unpleasant sound may be uttered (this The phenomenon is sometimes called "squeaking"). Therefore, in some cases, the user manually polishes the peripheral edge of the lens processed by the spectacle lens processing apparatus in order to reduce the adverse effect due to the frictional force. As a result, the user's work man-hour has increased.

  A typical object of the present disclosure is to provide an eyeglass lens processing apparatus and a processing control program capable of appropriately suppressing an adverse effect caused by a frictional force between a lens and a rim.

  An eyeglass lens processing apparatus provided by an exemplary embodiment of the present disclosure includes a mirror surface processing tool that mirrors a lens, and a control unit that controls the spectacle lens processing apparatus, and the control unit includes an eyeglass frame. Of the edge portion of the lens including a bevel for fitting the lens to the rim, a mirror surface processing is performed on the contact area in contact with the rim by the mirror processing tool.

  A processing control program provided by an exemplary embodiment of the present disclosure is a processing control program executed by a spectacle lens processing apparatus including a specular processing tool for specularly processing a lens, the control unit of the spectacle lens processing apparatus The processing step of performing mirror surface processing by the mirror surface processing tool on the contact area in contact with the rim among the edge portions of the lens including the bevel for fitting the lens to the rim of the spectacle frame The spectacle lens processing apparatus is executed.

  According to the spectacle lens processing apparatus and the processing control program according to the present disclosure, adverse effects caused by the frictional force between the lens and the rim are appropriately suppressed.

1 is a diagram showing a schematic configuration of an eyeglass lens processing apparatus 1. It is a fragmentary sectional view showing an example of edge part 60 of processed lens LE. 1 is a block diagram showing an electrical configuration of a spectacle lens processing apparatus 1. It is a flowchart of a partial mirror surface processing. It is an example of a partial cross-sectional view of the rim 80S and the lens LE when the lens LE is fitted to the rim 80S of the cell frame. It is a figure which shows an example of the mirror surface process area | region set to the edge part of the lens LE when a frame kind is a cell frame. It is an example of the fragmentary sectional view of rim 80M and lens LE when fitting lens LE to rim 80M of a metal frame. It is a figure which shows an example of the mirror surface process area | region set to the edge part of the lens LE when a frame kind is a metal frame. It is a fragmentary sectional view of rim 80 and lens LE for explaining an example of a method of setting a mirror surface processing field according to depth D of groove 81 of rim 80. It is a fragmentary sectional view of rim 80 and lens LE for explaining an example of a method of setting a mirror surface processing field according to relative angle theta of rim 80 and lens LE.

<Overview>
An eyeglass lens processing apparatus exemplified in the present disclosure includes a mirror surface processing tool and a control unit. The mirror finish tool performs mirror finish on the lens. A control part performs a mirror surface process with a mirror surface processing tool in the contact area | region which contacts a rim among the edge parts of the lens containing a bevel.

  The inventor in the present application first focuses on the fact that the frictional force generated between the lens and the rim is reduced by performing the mirror surface processing, and the idea of reducing the adverse effect of the frictional force by performing the mirror surface processing on the edge portion. It came. However, when the mirror-finished portion protrudes from the rim, disturbance light incident on the mirror surface is diffusely reflected, which may impair the appearance of the spectacle wearer. The spectacle lens processing apparatus exemplified in the present disclosure performs mirror processing on a contact area of the edge portion with the rim when a part of the edge portion contacts the rim and the other portion does not contact the rim. As a result, the adverse effect caused by the frictional force between the lens and the rim is suppressed while the diffuse reflection of disturbance light is suppressed. As a result, the adverse effect caused by the frictional force is appropriately suppressed.

  The “contact area” may not be an area that always contacts the rim but may be an area that is expected to contact the rim (in other words, an area that is highly likely to contact the rim). Moreover, when performing mirror surface processing on the contact area, the spectacle lens processing apparatus may perform mirror surface processing on the entire contact area. In this case, the effect of suppressing the adverse effect due to the frictional force is increased. Moreover, the spectacle lens processing apparatus may perform mirror surface processing only on a part of the contact area. Even in this case, an adverse effect due to the frictional force is suppressed as compared with the case where the mirror processing is not performed on the contact area. That is, the spectacle lens processing apparatus may perform mirror surface processing on at least a part of the contact area. When mirror processing is performed on a part of the contact area, the ratio of the area where mirror processing is performed in the contact area (hereinafter referred to as “mirror processing area”) is preferably 70% or more, and more than 80%. It is more desirable that it is 90% or more.

  A control part is good also considering the non-contact area | region which does not contact a rim among edge parts as an opaque surface which is not a mirror surface. In this case, the adverse reflection caused by the frictional force between the lens and the rim is suppressed while the diffuse reflection of the disturbance light is more appropriately suppressed.

  The “non-contact region” may not be a region that does not necessarily contact the rim but may be a region that is expected not to contact the rim (in other words, a region that is highly unlikely to contact the rim). Further, when the non-contact area is an opaque surface, the spectacle lens processing apparatus may make the entire non-contact area an opaque surface. In this case, the effect of suppressing irregular reflection of disturbance light is increased. In the eyeglass lens processing apparatus, a part of the non-contact area may be an opaque area. Even in this case, the diffuse reflection of disturbance light is suppressed as compared with the case where all of the non-contact areas are mirror surfaces. That is, the spectacle lens processing apparatus may have at least a part of the non-contact area as an opaque surface. When a part of the non-contact area is an opaque surface, the ratio of the opaque surface in the non-contact area is preferably 70% or more, more preferably 80% or more, and 90% or more. Is more desirable.

  The control unit may set a mirror surface processing area for performing mirror processing in the edge part according to information on at least one of the frame and the edge part. When at least one of the frame and the edge part changes, the distribution of the contact area and the non-contact area in the edge part often changes. Therefore, the mirror surface processing region is set in accordance with at least one of the information on the frame and the edge portion, so that the mirror surface processing is performed in a more appropriate region.

  The control unit may set the mirror surface processing region according to the type of the spectacle frame to which the processed lens is fitted. In many cases, the distribution of the contact area and the non-contact area in the edge changes depending on the type of the spectacle frame. Therefore, by setting the mirror finish area according to the type of the spectacle frame, the mirror finish is performed on an appropriate area according to the type of the frame.

  For example, in the case of a metal frame, only the bevel at the edge portion is in contact with the rim, and the shoulder portion between the corner portion of the lens and the edge of the bevel often does not contact the rim. Therefore, when the frame type is a metal frame, the control unit may set the mirror finish region only on the bevel. On the other hand, in the case of a cell frame, the shoulder on the rear side of the lens often comes into contact with the rim together with the bevel. Therefore, when the frame type is a cell frame, the control unit may set a mirror finish region on the bevel and the rear shoulder.

  The control unit may set the mirror finish region according to the depth of the rim groove into which the bevel is fitted. When the depth of the rim groove changes, the distribution of the contact area and the non-contact area in the edge portion often changes. Therefore, the mirror surface processing region is set in accordance with the depth of the rim groove, so that the mirror surface processing is performed at an appropriate position in the edge portion.

  Further, the control unit may acquire information on the height of the bevel formed on the lens together with information on the depth of the rim groove or instead of information on the depth of the rim groove. The control unit may set the mirror-finished region according to the bevel height information. In this case, the mirror-finished region is appropriately set according to the distribution of the contact region that can change according to the height of the bevel.

  The control unit may set the mirror finish region according to information on the relative angle of the rim with respect to the edge of the lens when the lens is fitted to the rim. The contact area between the shoulder portion of the edge portion and the frame can be changed according to the relative angle. Therefore, the mirror surface processing region is set according to the relative angle, and the mirror surface processing is performed on an appropriate region.

  Further, the control unit may acquire information on the width in the front-rear direction of the rim, and set a mirror-finished region according to the acquired information on the width of the rim. In this case, the mirror-finished region is appropriately set according to the distribution of the contact region that can change according to the width of the rim.

<Embodiment>
Hereinafter, one exemplary embodiment of the present disclosure will be described with reference to the drawings. As shown in FIG. 1, a spectacle lens processing apparatus (lens edger) 1 according to the present embodiment includes a lens holding unit 10, a lens shape measuring unit 20, a first lens processing unit 30, and a second lens processing unit 40. Prepare. The eyeglass lens processing apparatus 1 holds the lens LE between the two lens chuck shafts 16L and 16R of the lens holding unit 10. The spectacle lens processing apparatus 1 processes the lens LE by changing the relative positional relationship between the first lens processing unit 30 and the second lens processing unit 40 and the lens LE sandwiched between the lens chuck shafts 16L and 16R. To do.

  In the following description, the direction in which the inter-axis distance between the lens chuck shafts 16L and 16R and the first processing tool rotation shaft 32 of the first lens processing unit 30 varies is the X direction. A direction in which the lens chuck shafts 16L and 16R extend is defined as a Z direction. The Y direction is substantially the vertical direction of the eyeglass lens processing apparatus 1. Further, the lower right side, the upper left side, the upper right side, and the lower left side in FIG. 1 are defined as the front side, the rear side, the right side, and the left side of the eyeglass lens processing apparatus 1, respectively.

  The lens holding unit 10 includes shafts 11 and 12, a Z-axis movement support base 13, and a carriage 15. The shaft 11 is fixed to a central portion in the front-rear direction of the base 2 in the spectacle lens processing apparatus 1. The shaft 12 is fixed to the left side of the front end of the base 2. The two shafts 11 and 12 both extend in the Z-axis direction (that is, the direction parallel to the lens chuck shafts 16L and 16R). The Z-axis movement support base 13 is supported by two shafts 11 and 12 so as to be movable in the Z-axis direction. The carriage 15 is mounted on the Z-axis movement support base 13.

  The carriage 15 includes a left arm 15L on the left side and a right arm 15R on the right side. The left arm 15L rotatably holds the lens chuck shaft 16L. The right arm 15R rotatably holds the lens chuck shaft 16R. The two lens chuck shafts 16L and 16R are located on the same axis. The right lens chuck shaft 16R is moved in the Z-axis direction by a clamping motor 161 mounted on the right arm 15R. The eyeglass lens processing apparatus 1 holds the lens LE between the two lens chuck shafts 16L and 16R by moving the right lens chuck shaft 16R to the left. The right arm 15R is provided with a lens rotation motor 162 that rotates the two lens chuck shafts 16L and 16R. When the lens rotation motor 162 rotates, the two lens chuck shafts 16L and 16R rotate around the shaft in synchronization.

  A Z-axis moving motor 171 is mounted near the left end of the shaft 11. A ball screw (not shown) extending in the Z-axis direction in parallel with the shaft 11 is provided at the rear portion of the Z-axis movement support base 13. When the Z-axis movement motor 171 rotates, the ball screw rotates. As a result, the Z-axis movement support base 13 and the carriage 15 linearly move in the Z-axis direction. The Z-axis moving motor 171 is provided with an encoder 172. The encoder 172 detects the movement of the carriage 15 in the Z direction by detecting the rotation of the Z-axis moving motor 171.

  A guide shaft 18 and a ball screw 19 are provided in parallel between the Z-axis movement support base 13 and the left arm 15L of the carriage 15. An X-axis movement motor 191 is provided in the vicinity of the front end of the Z-axis movement support base 13. When the X-axis moving motor 191 rotates, the ball screw 19 rotates. As a result, the carriage 15 rotates about the shaft 11. The eyeglass lens processing apparatus 1 changes the relative positional relationship between the first lens processing unit 30 and the second lens processing unit 40 and the lens LE sandwiched between the lens chuck shafts 16L and 16R by rotating the carriage 15. Let That is, the spectacle lens processing apparatus 1 drives the X-axis movement motor 191 to move the first lens processing unit 30 and the second lens processing unit 40 relative to the lens LE in the X direction. The eyeglass lens processing apparatus 1 may perform processing by moving the first lens processing unit 30 and the second lens processing unit 40. That is, the spectacle lens processing apparatus 1 only needs to have a configuration in which the first lens processing unit 30 and the second lens processing unit 40 are moved relative to the lens LE. The X-axis moving motor 191 is provided with an encoder 192. The encoder 192 detects the movement of the carriage 15 in the X direction by detecting the rotation of the X-axis movement motor 191.

  The lens shape measurement unit 20 is provided behind the carriage 15. The lens shape measuring unit 20 includes a measuring element 21 that contacts the front surface of the lens LE and a measuring element 22 that contacts the rear surface of the lens LE. The measuring elements 21 and 22 are held by an arm 23 movable in the Z direction. The lens shape measurement unit 20 includes a sensor that detects the position of the arm in the Z direction. When measuring the lens shape, the spectacle lens processing apparatus 1 rotates the lens chuck shafts 16L and 16R and controls the movement of the lens chuck shafts 16L and 16R in the X direction based on the target lens shape. As a result, the positions of the front and rear surfaces of the lens corresponding to the target lens shape in the Z direction are detected by the sensor. In the eyeglass lens processing apparatus 1 according to the present embodiment, the lens shape is measured using the movement control in the Z direction of the lens chuck shafts 16L and 16R.

  The first lens processing unit 30 is provided in front of the carriage 15. The first lens processing unit 30 includes a first processing tool 31, a first processing tool rotating shaft 32, and a first processing tool rotating motor 321. The first processing tool 31 includes a glass roughing grindstone 311, a normal finishing grindstone 312, a plastic roughing grindstone 313, and a mirror finishing grindstone (mirror surface processing tool) 314. The normal finishing grindstone 312 is formed with a V-groove (bevel groove) for forming a bevel 70 (see FIG. 2) and a flat processed surface at the edge of the lens LE.

  The grain size of the mirror finishing grindstone 314 is usually smaller than that of the finishing grindstone 312. When the lens LE is processed by the mirror finishing grindstone 314, the processed surface becomes a mirror surface. When the lens LE is processed by a grindstone other than the mirror-finishing grindstone 314 (for example, the normal finishing grindstone 312), the processed surface becomes an opaque surface. As an example, the mirror finishing grindstone 314 of the present embodiment is in contact with the lens LE in a state parallel to the edge of the lens LE and in contact with the lens LE in a state of being inclined with respect to the edge. And an inclined machining surface.

  Here, an example of a mirror surface processing method of the lens LE by the mirror finishing grindstone 314 will be described. First, an example of the edge portion 60 when the bevel 70 is formed on the lens LE will be described with reference to FIG. The edge portion 60 is a portion of the outer peripheral edge of the lens LE. As described above, in this embodiment, the normal finishing grindstone 312 is brought into contact with the lens LE so that the edge surface of the roughly processed lens LE and the flat processing surface of the normal finishing grindstone 312 are parallel to each other. Thus, a bevel 70 is formed on the edge 60 of the lens LE. The normal finishing grindstone 312 in this embodiment is provided with only one V groove. Therefore, the height of the bevel 70 to be formed is constant. However, it goes without saying that the bevel 70 of various heights may be formed.

  A front shoulder portion 73F and a rear shoulder portion 73B are formed on the edge portion 60 of the lens LE illustrated in FIG. The shoulder portion is a portion between the corner of the edge portion 60 of the lens LE and the heel of the bevel 70. Specifically, the front shoulder 73 </ b> F is a portion between the front corner 74 </ b> F in the edge 60 of the lens LE and the front collar 72 </ b> F of the bevel 70. The rear shoulder 73 </ b> B is a portion between the rear corner 74 </ b> B in the edge 60 of the lens LE and the collar 72 </ b> B on the rear side of the bevel 70. When the processed lens LE is fitted to the rim of the spectacle frame, the bevel 70 contacts the groove of the rim, and at least one of the front side corner portion 73F and the rear side corner portion 73B of the edge portion 60 contacts the rim. There is. However, even when at least one of the front side corner portion 73F and the rear side corner portion 73 is not formed in the edge portion 60, it is needless to say that at least a part of the technique exemplified in the present disclosure can be applied. Further, a portion between the apex of the bevel 70 and the front side ridge 72F is defined as a front side inclined surface 71F of the bevel 70. A portion between the apex of the bevel 70 and the rear side ridge 72B is defined as a rear side inclined surface 71B of the bevel 70.

  The spectacle lens processing apparatus 1 of this embodiment can perform mirror surface processing on a partial region of the edge portion 60 of the lens LE by changing the contact mode of the mirror finishing grindstone 314 with the lens LE. For example, the spectacle lens processing apparatus 1 uses the inclined surface of the mirror-finishing grindstone 314 as a mirror surface for some or all of the front-side inclined surface 71F and the rear-side inclined surface 71B of the bevel 70 of the edge portion 60 of the lens LE. can do. Further, the spectacle lens processing apparatus 1 uses the flat processed surface of the mirror finishing grindstone 314 as a mirror surface for some or all of the front shoulder 73F and the rear shoulder 73B of the edge 60 of the lens LE. be able to. The region where the mirror finish is not performed is an opaque surface formed by the normal finishing grindstone 312.

  However, the method for performing mirror processing on a part of the region in the edge portion 60 can be changed as appropriate. For example, the spectacle lens processing apparatus 1 may use a part of the edge portion 60 as a mirror surface by using an end mill whose contact area with the edge portion 60 is smaller than the mirror finishing grindstone 314. The spectacle lens processing apparatus 1 may include at least one mirror-finishing grindstone that contacts only a part of the edge portion 60. Further, the spectacle lens processing apparatus 1 performs a mirror surface processing on the entire surface of the edge portion 60 with a mirror surface processing tool (for example, a mirror finishing grindstone or an end mill), and then a processing tool for forming an opaque surface (for example, a normal surface) By bringing the finishing grindstone 312) into contact with the mirror surface again, a part of the edge portion 60 may be a mirror surface.

  Returning to the description of FIG. The second lens processing unit 40 is provided behind the carriage 15. The second lens processing unit 40 is arranged side by side with the lens shape measurement unit 20 outside the movement range of the lens shape measurement unit 20. The second lens processing unit 40 includes a second processing tool 44 and a second processing tool rotating motor 431. The second processing tool 44 is used when chamfering and grooving the lens LE.

  With reference to FIG. 3, the electrical configuration of the eyeglass lens processing apparatus 1 will be described. The spectacle lens processing apparatus 1 includes a CPU 5 that is a processor that controls the spectacle lens processing apparatus 1. A RAM 6, a ROM 7, a nonvolatile memory 8, an operation unit 50, a display 55, and an external communication I / F 59 are connected to the CPU 5 via a bus. Further, the CPU 5 includes various devices such as the motors described above (a clamping motor 161, a lens rotating motor 162, a Z-axis moving motor 171, an X-axis moving motor 191, a first processing tool rotating motor 321, a second processing tool. A tool rotation motor 431, an encoder 172, an encoder 192, and a sensor 231) are connected via a bus.

  The RAM 6 temporarily stores various information. The ROM 7 stores various programs, initial values, and the like. The non-volatile memory 8 is a readable / writable storage medium (for example, a flash ROM, a hard disk drive, etc.) that can retain stored contents even when power supply is interrupted. The nonvolatile memory 8 stores a control program (for example, a processing control program for controlling the partial mirror surface processing shown in FIG. 4) for controlling the operation of the eyeglass lens processing apparatus. The operation unit 50 is provided for receiving input of various instructions from the worker. For example, an operation button, a touch panel provided on the surface of the display 55, or the like can be used as the operation unit 50. The display 55 displays various information such as the shape of the lens LE and the shape of the frame. The external communication I / F 59 connects the eyeglass lens processing apparatus 1 to an external device (for example, a frame shape measuring apparatus 193).

  With reference to FIGS. 4 to 10, the partial mirror surface processing executed by the CPU 5 of the eyeglass lens processing apparatus 1 will be described. As described above, the non-volatile memory 8 of the eyeglass lens processing apparatus 1 stores a processing control program for executing the partial mirror surface processing. When the execution instruction of the partial mirror surface processing is input via the operation unit 50 or the like, the CPU 5 executes the partial mirror surface processing shown in FIG. 4 according to the processing control program.

  The spectacle lens processing apparatus 1 according to the present embodiment is a region in which mirror processing is partially performed in the edge portion 60 according to information on at least one of the eyeglass frame to which the lens LE is fitted and the edge portion 60 of the lens LE ( (Hereinafter referred to as “mirror surface processing region”) can be set. Specifically, the spectacle lens processing apparatus 1 according to the present embodiment includes a spectacle frame type (hereinafter referred to as “frame type”) to which the lens LE is fitted, a depth of a groove formed on the rim of the spectacle frame, and the lens. The mirror-finished region is set according to information on at least one of the relative angles of the rim with respect to the edge portion 60 of the LE. By operating the operation unit 50, the user can select whether to set the mirror surface processing region based on any of the frame type, the depth of the rim groove, and the relative angle between the edge portion 60 and the rim.

  As shown in FIG. 4, when it is selected that the frame type is considered (S1: YES), the CPU 5 acquires information on the frame type (S2). The method by which the CPU 5 acquires frame type information can be selected as appropriate. For example, the CPU 5 may cause the user to input information on the frame type by operating the operation unit 50. Further, information on the frame type may be acquired by reading an identifier (for example, a barcode) given to the spectacle frame. The CPU 5 sets a mirror finish region according to the acquired frame type information (S3). The process proceeds to S4.

  With reference to FIG. 5 to FIG. 8, an example of a method for setting the mirror-finished region according to the frame type information will be described. FIG. 5 is an example of a partial cross-sectional view when the lens LE is fitted to the rim 80S of the metal frame. Generally, the surface of the rim 80S of the metal frame that faces the lens LE (the surface on which the groove 81 is formed) is the edge surface of the lens LE (the front shoulder 73F and the rear shoulder 73B). It tends to be parallel to the surface. Therefore, when the depth of the groove 81 of the rim 80S is smaller than the height of the bevel 70, the front shoulder 73F and the rear shoulder 73B of the lens LE are unlikely to contact the rim 80S. That is, when the type of the spectacle frame is a metal frame, the front shoulder portion 73F and the rear shoulder portion 73B are in contact areas that are likely to contact the rim 80S in the edge portion 60 (see FIG. 2) of the lens LE. Is often not included.

  Therefore, when the type of the spectacle frame is a metal frame, the CPU 5 of the present embodiment has a mirror-finished region on the front side slope 71F and the rear side slope 71B (see FIG. 2) of the bevel 70 as shown in FIG. 85Y is set, and no mirror processing region is set in the front shoulder 73F and the rear shoulder 73B (FIG. 6 shows only the mirror processing region 85Y of the rear slope 71B, and the mirror surface of the front slope 71F. The illustration of the machining area is omitted). A portion of the edge portion 60 that is not set as the mirror-finished region is an opaque surface.

  FIG. 7 is an example of a partial cross-sectional view when the lens LE is fitted to the rim 80M of the cell frame. In general, the surface of the rim 80M of the cell frame that faces the lens LE (the surface on which the groove 81 is formed) is easily inclined with respect to the edge surface of the lens LE. Specifically, the rim 80M of the cell frame easily contacts the surface of the rear shoulder 73B together with the surface of the bevel 70. That is, when the type of the spectacle frame is a cell frame, a contact region that has a high possibility of contacting the rim 80M in the edge portion 60 (see FIG. 2) of the lens LE includes not only the bevel 70 but also the rear shoulder portion 73B. At least a part is also included.

  Therefore, when the type of the spectacle frame is a cell frame, the CPU 5 of the present embodiment, as shown in FIG. 8, includes at least the rear shoulder 73 </ b> B in addition to the front slope 71 </ b> F and the rear slope 71 </ b> B of the bevel 70. A mirror processing area 85K is also set in a part. In the example illustrated in FIG. 8, the CPU 5 sets the mirror-finished region 85K only in a part of the rear shoulder 73B based on the width in the front-rear direction of the rim 80M. However, the method of setting the mirror surface processing region 85K on the rear shoulder 73B may be changed. For example, when the frame type is a cell frame, the CPU 5 may set all the rear shoulders 73B in the mirror finish region 85K. As described above, a method of performing mirror finishing on only a part of the shoulder can be selected as appropriate. For example, in the example shown in FIG. 8, the spectacle lens processing apparatus 1 performs mirror-finishing once on the region including the rear corner of the rear side piece 73 </ b> B, and then near the rear corner. On the other hand, the processing tool (for forming an opaque surface) may be brought into contact with the mirror surface again.

  In addition, in this embodiment, the case where the kind of spectacles frame was a metal frame, and the case where a mirror surface processing area | region was set in the case of a cell frame were illustrated. However, even when other types of spectacle frames are used, it is of course desirable to set the mirror finish region according to the type of spectacle frame.

  Returning to the description of FIG. When it is selected to consider the depth of the groove 81 of the rim 80 (S4: YES), the CPU 5 acquires information on the depth of the groove 81 of the rim 80 (S5). The method by which the CPU 5 acquires information about the depth of the groove 81 of the rim 80 can be selected as appropriate. For example, the CPU 5 may cause the user to input the depth of the groove 81 by operating the operation unit 50. Further, the CPU 5 may acquire information on the depth of the groove 81 measured by a frame shape measuring device or the like. The CPU 5 sets a mirror finish region based on the acquired depth information of the groove 81 (S6). The process proceeds to S7.

  With reference to FIG. 9, an example of a method for setting the mirror-finished region according to the depth D of the groove 81 will be described. CPU5 of this embodiment determines the width | variety from the vertex of the bevel 70 of the mirror surface processing area | region set to the front side slope 71F and the back side slope 71B of the bevel 70 based on the depth D of the groove | channel 81 of the rim | limb 80. FIG. . As an example, the depth D of the groove 81 of the rim 80 illustrated in FIG. 9 is deeper than the depth of the groove 81 illustrated in FIG. In this case, the CPU 5 makes the width of the mirror surface processing region (the width in the direction from the apex of the bevel 70 toward the ridge) larger than the width of the mirror surface processing region 85Y illustrated in FIG. As a result, according to the depth D of the groove 81, mirror surface processing is performed in an appropriate region that is highly likely to contact the rim 80.

  Needless to say, the mirror-finished region may be set in consideration of both the frame type and the depth of the groove 81 (S3, S6). Further, the CPU 5 may set the mirror finish region according to the height information of the bevel 70. For example, when the height of the bevel 70 is smaller than the depth of the groove 81, the CPU 5 may set a mirror-finished region on the front shoulder 73F and the rear shoulder 73B together with the surface of the bevel 70.

  Returning to the description of FIG. If it is selected that the relative angle of the rim 80 with respect to the edge portion 60 of the lens LE is selected (S7: YES), the CPU 5 acquires information on the relative angle (S8). As shown in FIG. 10, the CPU 5 of the present embodiment includes a surface of the rim 80 that faces the lens LE (a surface on which the groove 81 is formed) and an edge surface of the lens LE (a front shoulder 73F). And information on the relative angle θ of the rear shoulder 73B). When the relative angle θ changes, the contact area between the shoulder 73 and the rim 80 (for example, whether or not the shoulder 73 and the rim 80 are in contact and the area when the shoulder 73 and the rim 80 are in contact) changes. To do. The CPU 5 can perform mirror surface processing on an appropriate region by setting the mirror surface processing region according to the relative angle θ (S9). The process proceeds to S10.

  The CPU 5 performs mirror surface processing on the mirror surface processing region set in S1 to S9 using the mirror surface finishing grindstone 314 (S10). Note that the mirror-finished region set in S1 to S9 is a region of the edge portion 60 that is expected to contact the rim 80 (in other words, a region that is highly likely to contact the rim 80). It is not an area to do. However, by setting a region having a high possibility of contacting the rim 80 as a mirror surface, adverse effects caused by the frictional force between the lens LE and the rim 80 are appropriately suppressed. Moreover, the spectacle lens processing apparatus 1 of this embodiment makes all the set mirror surface processing areas a mirror surface. However, even when mirror processing is performed only on a part of the set mirror processing region, adverse effects due to frictional forces are appropriately suppressed. Further, the region other than the mirror-finished region in the edge portion 60 is a region that is expected not to contact the rim 80 (in other words, a region that is unlikely to contact the rim 80), and is an opaque surface. As a result, the influence of diffuse reflection of disturbance light passing through the mirror surface is appropriately suppressed.

1 Eyeglass lens processing device 5 CPU
8 Non-volatile memory 31 First processing tool 60 Edge portion 70 Bend 71F Front side slope 71B Rear side slope 72F Front side collar 72B Rear side collar 73F Front side shoulder 73B Rear side shoulder 74F Front side corner 74B Rear side Corner portion 80 Rim 80S Cell frame rim 80M Metal frame rim 85Y, 85K Mirror surface processing region 314 Mirror surface finishing grindstone

Claims (7)

An eyeglass lens processing apparatus,
A mirror finishing tool that mirrors the lens;
A control unit that controls the spectacle lens processing apparatus;
With
The controller is
A spectacle lens processing apparatus, wherein a mirror surface processing tool performs mirror processing on a contact area in contact with the rim among edge portions of the lens including a bevel for fitting the lens to a rim of a spectacle frame. The eyeglass lens processing apparatus according to claim 1,
The controller is
An eyeglass lens processing apparatus, wherein a non-contact area that does not contact the rim in the edge portion is opaque. The spectacle lens processing device according to claim 1 or 2,
The controller is
Obtaining at least one of the spectacle frame into which the lens is fitted and the edge portion of the lens;
A spectacle lens processing apparatus, wherein a specular surface processing region for performing specular processing is set in the edge portion in accordance with the acquired information. The eyeglass lens processing apparatus according to claim 3,
The controller is
Obtaining information of the type of the spectacle frame into which the lens is fitted;
The spectacle lens processing apparatus, wherein the specular processing region is set according to the acquired information on the type of the spectacle frame. The spectacle lens processing device according to claim 3 or 4,
The controller is
Obtain information on the depth of the groove of the rim where the bevel is fitted,
The spectacle lens processing apparatus, wherein the specular processing region is set according to the acquired information on the depth of the groove. The eyeglass lens processing apparatus according to any one of claims 3 to 5,
The controller is
Obtaining information on the angle of the rim relative to the edge of the lens when the lens is fitted to the rim;
The spectacle lens processing device, wherein the specular processing region is set according to the acquired information of the angle. A processing control program executed by an eyeglass lens processing apparatus provided with a mirror surface processing tool for mirror processing a lens,
By being executed by the control unit of the spectacle lens processing apparatus,
Of the edge portion of the lens including a bevel for fitting the lens to a rim of a spectacle frame, the spectacle lens processing apparatus executes a processing step of performing mirror processing with the specular processing tool in a contact area in contact with the rim. A machining control program characterized by that.

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