JP7767930B2 - Eyeglass lens processing device and eyeglass lens processing control program - Google Patents

Description

This disclosure relates to an eyeglass lens processing device for processing eyeglass lenses and an eyeglass lens processing control program.

There are known eyeglass lens processing devices equipped with processing tools that process the periphery of eyeglass lenses. For example, there is an eyeglass lens processing device equipped with multiple end mills or cutters as processing tools and a mechanism for rotating each processing tool with a spindle (see Patent Document 1), and an eyeglass lens processing device equipped with multiple processing tools that can be selectively switched between (see Patent Document 2).

JP 2014-198360 A Japanese Patent Application Laid-Open No. 2000-218487

The resin materials used in eyeglass lenses can be broadly divided into thermosetting and thermoplastic. Thermosetting lenses include a common plastic known as CR39, as well as high-refractive-index plastics and acrylic. Thermoplastic lenses include Trivex and polycarbonate.

It was discovered that using a single cutter as a processing tool to roughly process eyeglass lenses made of these various materials could result in problems such as damage to the eyeglass lenses (lens breakage, cracks, etc.) and reduced durability of the processing tool.

In consideration of the problems with the conventional technology described above, the technical objective of this disclosure is to provide an eyeglass lens processing device and eyeglass lens processing control program that can improve the durability of processing tools and reduce damage to eyeglass lenses. It is also a technical objective to provide an eyeglass lens processing device and eyeglass lens processing control program that can prevent increases in device costs.

In order to solve the above problems, the present disclosure is characterized by having the following configuration.
(1) A spectacle lens processing device according to a first aspect of the present disclosure is a spectacle lens processing device that processes the periphery of a spectacle lens held by a lens holding shaft, and is characterized by comprising: a lens material acquisition means that acquires material data of the spectacle lens; a processing tool having a processing area for processing the periphery of the spectacle lens, the processing tool having the processing area within a same member that is integrally manufactured from a common material; a moving means that changes the relative positional relationship between the spectacle lens held by the lens holding shaft and the processing tool; and a control means that controls the moving means so as to change an area within the processing area within the same member to process the spectacle lens based on the acquired material data.
(2) A spectacle lens processing device according to a second aspect of the present disclosure is a spectacle lens processing device that processes a periphery of a spectacle lens held by a lens holding shaft, and includes: a lens material acquisition means that acquires material data of the spectacle lens; a processing tool having a processing area that processes the periphery of the spectacle lens; a moving means that changes the relative positional relationship between the spectacle lens held by the lens holding shaft and the processing tool; a control means that controls the moving means to change an area within the processing area to process the spectacle lens based on the acquired material data; and a refractive surface position acquisition means that acquires refractive surface position data of at least one of the front refractive surface and the rear refractive surface of the spectacle lens in the axial direction of the lens holding shaft, and the control means acquires the material data of a predetermined first lens having thermoplasticity. If the material data is a predetermined second lens material, the eyeglass lens is processed within a first region set in the processing area of the processing tool, and if the material data is a predetermined second lens material that is thermosetting, the moving means is controlled to process the eyeglass lens within a second region set in the processing area of the processing tool, the second region being set in an area different from the first region, and the control means controls the moving means, based on the refractive surface position data acquired by the refractive surface position acquisition means, to process the eyeglass lens within the first region if the eyeglass lens is made of the first lens material, and to process the eyeglass lens within the second region if the eyeglass lens is made of the second lens material.
(3) The eyeglass lens processing control program according to the present disclosure is a eyeglass lens processing control program executed by an eyeglass lens processing device that includes: a processing tool having a processing area for processing the periphery of an eyeglass lens, the processing tool having the processing area within a same member that is integrally manufactured from a common material; a moving means that changes the relative positional relationship between the eyeglass lens held by a lens holding shaft and the processing tool; and a lens material acquisition means that acquires material data of the eyeglass lens. The program is characterized in that, when executed by a control unit of the eyeglass lens processing device, the program causes the eyeglass lens processing device to execute a control step of controlling the moving means to change an area within the processing area within the same member based on the acquired lens material data and process the eyeglass lens.

2 is a diagram illustrating the configuration of a processing mechanism unit in the eyeglass lens processing device. FIG. FIG. 2 is a diagram illustrating a roughing tool according to an embodiment. 10A and 10B are diagrams illustrating the minimum machining diameter of an eyeglass lens that can be machined by a rough machining tool. FIG. 2 is a schematic configuration diagram of a lens shape measuring unit. FIG. 2 is a control block diagram of the eyeglass lens processing device. 10 is an example of a display screen when setting processing conditions. FIG. 10 is a diagram showing an example of a machining path in rough machining. 10A to 10C are diagrams illustrating a specific processing operation in which the rear region and the front region of the processing tool are changed depending on the lens material.

One typical embodiment will be described below with reference to the drawings. Figures 1 to 5 are diagrams for explaining the eyeglass lens processing device according to this embodiment. Note that the items grouped in < > below can be used independently or in conjunction with each other.

[overview]
For example, an eyeglass lens processing device (e.g., eyeglass lens processing device 1) processes the periphery of an eyeglass lens held by a lens holding shaft (e.g., lens chuck shaft 102). For example, the eyeglass lens processing device includes a processing tool (e.g., a roughing tool 423, a cutter, an end mill). For example, the processing tool has a processing area (e.g., a processing area PA) for processing the periphery of the eyeglass lens. For example, the rotation axis of the processing tool (e.g., the second processing tool rotation axis 412) may be inclined so that the tip side of the processing tool approaches the lens holding shaft (i.e., the axis of the processing tool is inclined). Note that the inclination of the rotation axis of the processing tool may be fixed or may be changeable.

For example, the eyeglass lens processing device is equipped with a moving means (e.g., a moving unit 300). For example, the moving means changes the relative positional relationship between the eyeglass lens held by the lens holding shaft and the processing tool. For example, the moving means may be a moving mechanism that moves the lens holding shaft relative to the processing tool, or a moving mechanism that moves the processing tool relative to the eyeglass lens held by the lens holding shaft, or may be a configuration that combines both of these moving mechanisms.

For example, the eyeglass lens processing device includes a lens material acquisition means (e.g., data acquisition unit 10). The lens material acquisition means acquires material data of the eyeglass lens. For example, the lens material acquisition means may acquire material data by inputting the material data of the eyeglass lens using a data input means (e.g., input unit 13), or may acquire material data based on the detection results of a lens material detection device for detecting the material of the eyeglass lens. For example, the lens material detection device may utilize the technology disclosed in JP 2001-88014 A, which detects the lens material based on the Abbe number, which represents the chromatic dispersion of light in an eyeglass lens, and the refractive index of the eyeglass lens. The lens material acquisition means may also acquire material data by selectively inputting material data from a database.

For example, the eyeglass lens processing device may be equipped with a refractive surface position acquisition means (e.g., lens shape measurement unit 200). For example, the refractive surface position acquisition means acquires refractive surface position data of at least one of the anterior and posterior refractive surfaces of the eyeglass lens in the axial direction of the lens holding shaft. For example, the refractive surface position acquisition means may be equipped with a probe (e.g., probe 261, probe 262) that is brought into contact with at least one of the anterior and posterior refractive surfaces of the eyeglass lens, and may be configured to acquire refractive surface position data based on the detection results of the position of the probe in the axial direction of the lens holding shaft. Also, for example, the refractive surface position acquisition means may acquire refractive surface position data by inputting refractive surface curve data via data input means (e.g., input unit 13).

For example, the eyeglass lens processing device includes a control means (e.g., a control unit 50). For example, the control means controls the movement means to change the area within the processing area of the processing tool to process the eyeglass lens based on material data acquired by the lens material acquisition means. For example, the control means controls the movement means to divide the processing area of the processing tool into multiple areas (e.g., a first area, a second area) and selectively change the divided areas based on the material data to process the eyeglass lens. This makes it possible to process eyeglass lenses of different materials with a single processing tool, improving the durability of the processing tool and reducing damage to the eyeglass lens. Furthermore, since there is no need to prepare dedicated processing tools for processing eyeglass lenses of different materials, an increase in device costs can be suppressed. Note that in the present disclosure, for example, the processing area of a processing tool refers to an area within a single processing tool. Furthermore, for example, multiple areas divided within the processing area of a processing tool refer to areas integrally made from a common material (e.g., cemented carbide).

For example, if the material data indicates a predetermined first lens material (e.g., Trivex), the control means controls the movement means to process the eyeglass lens within a first region (e.g., the rear region RPA) set in the processing area of the processing tool; and if the material data indicates a predetermined second lens material (e.g., at least one of CR39 general plastic, high-refractive-index plastic, and acrylic), the control means controls the movement means to process the eyeglass lens within a second region (e.g., the front region FPA) set in the processing area of the processing tool, which is set in an area different from the first region. For example, the first lens material is a thermoplastic material, and the second lens material is a thermosetting material. As a result, for example, the second region used to process the thermosetting second lens material is not used to process the first lens material (e.g., Trivex), thereby improving the durability of the second region and reducing damage to the thermosetting lens of the second lens material.

For example, based on the refractive surface position data (e.g., refractive surface position data of at least one of the anterior and posterior refractive surfaces) acquired by the refractive surface position acquisition means, the control means controls the movement means to process the eyeglass lens within a first region if the eyeglass lens is made of a first lens material, and controls the movement means to process the eyeglass lens within a second region if the eyeglass lens is made of a second lens material. This makes it possible to appropriately divide the processing region according to the lens material, even when processing highly curved lenses, without increasing the effective blade length (processing region PA) of the processing tool.

For example, when processing an eyeglass lens in a front region (e.g., front region FPA) located in front of the processing tool (e.g., toward the tip) within the first and second regions, the control means controls the moving means so that the front refractive surface of the eyeglass lens is located at a first reference position (e.g., processing reference position Sfp) set toward the rear within the front region. For example, when processing an eyeglass lens in a rear region (e.g., rear region RPA) located behind the processing tool (e.g., toward the rear end or base) within the first and second regions, the control means controls the moving means so that the back refractive surface of the eyeglass lens is located at a second reference position (e.g., processing reference position Srp) set toward the front within the rear region. This makes it possible to minimize the minimum processing diameter of the eyeglass lens that can be processed when processing an eyeglass lens in the rear region, and to minimize tool shake when processing a lens in the front region, thereby enabling stable processing of the eyeglass lens. Additionally, by processing the thermosetting lens, which is frequently processed, in the anterior region, the minimum processing diameter of the thermosetting lens can be reduced.

In addition, at least the second region of the processing area of the processing tool may be coated to reduce wear on the processing tool when processing thermosetting eyeglass lenses. This can further improve the durability of the processing tool even with a single processing tool, and also reduce damage to eyeglass lenses, allowing more eyeglass lenses to be processed. This coating may be applied to the entire processing area of the processing tool.

In the above, even if the reference positions (e.g., processing reference position Srp, processing reference position Sfp) for positioning a predetermined position (e.g., anterior refraction surface position, posterior refraction surface position, anterior refraction surface and posterior refraction surface and center position, etc.) in the edge direction of the eyeglass lens (e.g., the X direction in Figure 1) within the processing area are simply set to different positions within the processing area of the processing tool based on the lens material, this is also included in the technology of "changing the area within the processing area of the processing tool based on acquired material data" in the present disclosure.

Note that this disclosure is not limited to the device described in this embodiment. For example, an eyeglass lens processing control program (software) that performs the functions of the following embodiment may be supplied to a system or device via a network or various storage media. The control device (e.g., a CPU) of the system or device may then read and execute the program.

For example, when the eyeglass lens processing control program is executed by the control unit of the eyeglass lens processing device, it causes the eyeglass lens processing device to execute a control step of controlling the movement means so as to change the area within the processing area and process the eyeglass lens based on lens material data.

[Example]
One exemplary embodiment of the present disclosure will be described with reference to the drawings. Fig. 1 is a diagram illustrating the configuration of a processing mechanism unit in an eyeglass lens processing device 1 according to the embodiment.

For example, the eyeglass lens processing apparatus 1 includes a lens holding unit 100, which is an example of a lens holding means having a lens holding shaft for holding an eyeglass lens (hereinafter referred to as lens LE), which is the lens to be processed. For example, the eyeglass lens processing apparatus 1 includes a lens shape measuring unit 200 configured to acquire the shape of the lens LE (refractive surface shape of the lens LE, outer shape of the lens LE) (see Figure 2). In this embodiment, the lens shape measuring unit 200 is provided on the base 2 of the eyeglass lens processing apparatus 1.

For example, the eyeglass lens processing apparatus 1 includes a first processing tool unit 150. The first processing tool unit 150 is configured to rotate a processing tool that processes the periphery of the lens LE. For example, the eyeglass lens processing apparatus 1 includes a second processing tool unit 400. The second processing tool unit 400 is configured to rotate a rough processing tool (e.g., rough processing tool 423) that roughly processes the periphery of the lens LE. For example, the eyeglass lens processing apparatus 1 includes a moving unit 300, which is an example of a moving means for changing (adjusting) the positional relationship between the lens LE held by the lens holding shaft and various components such as the processing tool. The moving unit 300 is used to change (adjust) the relative positional relationship between the lens LE and the processing tool held by the first processing tool unit 150. The moving unit 300 is also used to change (adjust) the relative positional relationship between the lens LE and the processing tool held by the second processing tool unit 400. The movement unit 300 is also used to change (adjust) the relative positional relationship between the lens LE and the measuring probe held by the lens shape measurement unit 200.

<Lens holding unit>
For example, the lens holding unit 100 includes a lens chuck shaft 102, which is an example of a lens holding shaft for holding (clamping) the lens LE, and a carriage 101. The lens chuck shaft 102 includes a pair of lens chuck shafts 102L and 102R. The lens chuck shaft 102L is rotatably held by the left arm 101L of the carriage 101, and the lens chuck shaft 102R is rotatably held by the right arm 101R of the carriage 101. The lens chuck shaft 102 (i.e., the lens LE) is rotated by a motor 120, which is an example of a lens rotation means. In addition, a motor 110 is disposed on the right arm 101R for moving the right chuck shaft 102R toward the left chuck shaft 102L. When the right chuck shaft 102R is moved toward the left chuck shaft 102L, the lens LE is held by the two lens chuck shafts 102L and 102R.

<First processing tool unit>
The first processing tool unit 150 includes a motor 160 for rotating a processing tool rotation shaft 161. The processing tool rotation shaft 161 is rotatably held by a rotation shaft holding unit 162 in a positional relationship parallel to the lens chuck shaft 102. The rotation shaft holding unit 162 is attached to the base 2. A plurality of processing tools 163 for processing the periphery of the lens LE are attached to the processing tool rotation shaft 161. For example, the processing tools 163 include at least one of a high-curve lens finishing tool 163a, a mirror-finishing tool 163b, a low-curve lens finishing tool 163c, and a glass roughing tool 163d. The mirror-finishing tool 163b and the finishing tool 163c each include at least one of a V-groove for beveling and a flat finishing surface for flat processing. For example, a grinding wheel is used as the processing tool 163, but a cutter may also be used.

<Second processing tool unit>
For example, the second processing tool unit 400 is disposed behind the carriage 101. The second processing tool unit 400 includes a roughing tool 423 for roughly processing the peripheral edge of the lens LE. For example, a cutter is used as the roughing tool 423, but an end mill may also be used. Furthermore, for example, the second processing tool unit 400 includes a chamfering tool 415 for chamfering the corners of the edge of the lens LE. For example, a grinding wheel is used as the chamfering tool 415.

The chamfering tool 415 is connected to the first tool rotation shaft 410. The first tool rotation shaft 410 is rotatably held inside the second rotation shaft A2. The first tool rotation shaft 410 is also connected to the drive shaft 400a of the motor 421 via a connecting member (not shown). When the motor 421 is rotated, the chamfering tool 413 is rotated.

The roughing tool 423 is attached to the second processing tool rotation shaft 412. The second processing tool rotation shaft 412 is rotatably held in the holder 411. The second processing tool rotation shaft 412 is connected to the drive shaft 400a of the motor 421 via a connecting member (not shown). In this embodiment, the second processing tool rotation shaft 412 is positioned differently from the drive shaft 400a of the motor 421. That is, the rotation of the drive shaft 400a of the motor 421 is transmitted to the second processing tool rotation shaft 412 via a one-way clutch (not shown), bearings, etc. As a result, the rotation of the motor 421 is transmitted to the second processing tool rotation shaft 412, and the roughing tool 423 is rotated by the motor 421.

Figure 2 is a diagram illustrating the roughing tool 423 of the embodiment. The cutting area PA, which is the effective cutting edge length of the roughing tool 423, is divided into a front area FPA located at the tip end of the roughing tool 423 and a rear area RPA located at the rear end (root end) of the roughing tool 423. In this embodiment, the rear area RPA is the first area for machining thermoplastic Trivex lenses, and the front area FPA is the second area for machining common thermosetting plastic lenses such as CR39. For example, the first and second areas of the cutting area PA of the roughing tool 423 are integrally fabricated from cemented carbide alloy material to be suitable for machining thermoplastic lens materials. At least the front area FPA of the second area is coated to reduce tool wear when machining thermosetting lens materials. In this disclosure, the coating is diamond-like carbon, but is not limited to this. Any coating that can reduce tool wear may be used. The coating may be applied to the entire processing area PA, including the rear area RPA of the first area. While it is preferable for the processing area PA to be coated, it is not necessary.

Alternatively, the rear area RPA may be the second area, and the front area FPA may be the first area. The diameter Dt of the roughing tool 423 is, for example, 4 mm.

In addition, the second processing tool rotation axis 412 of the rough processing tool 423 is inclined at an angle α with respect to the lens chuck axis 102 so that the tip side of the rough processing tool 423 approaches the lens chuck axis 102. For example, the angle α is 10 to 15 degrees.

3 is a diagram illustrating the minimum machining diameter of the lens LE that can be machined by the roughing tool 423 when the holding portion 411, which has a diameter larger than that of the roughing tool 423 and the second processing tool rotation shaft 412, is brought close enough to the lens chuck shaft 102 (and the cup holder 103 to which the lens fixing jig is attached, which is attached to the tip of the lens chuck shaft 102L) without coming into contact with the lens chuck shaft 102 (and the cup holder 103 to which the lens fixing jig is attached, which is attached to the tip of the lens chuck shaft 102L). As shown in FIG. 3(a), when the second processing tool rotation shaft 412 is parallel to the lens chuck shaft 102, the minimum machining diameter of the lens LE that can be machined is radius RM1. In contrast, as shown in FIG. 3(b), when the tip side of the roughing tool 423 is inclined at an angle α so as to approach the lens chuck shaft 102, the minimum machining diameter of the lens LE that can be machined is radius RM2, which is smaller than radius RM1. This allows for a wider range of applicable lens shapes (rims) of eyeglass frames that can be handled by the eyeglass lens processing device 1.

In FIG. 1, the second rotation axis A2 is rotatably connected inside the base portion 402. The second rotation axis A2 is a different rotation axis from the first rotation axis A1. The second rotation axis A2 is rotated by driving power (e.g., a motor) not shown. The rotation of the second rotation axis A2 causes the holding portion 411 connected to the second rotation axis A2 to rotate about the second rotation axis A2. As a result, the second processing tool drive shaft 412 held by the holding portion 411 rotates about the second rotation axis A2, and the rough processing tool 423 is moved to a predetermined processing position.

The second processing tool unit 400 may also be equipped with a rotation mechanism for changing the position of the processing tool 423 (the inclination angle α of the processing tool rotation axis 412). For example, the first rotation axis A1 is disposed inside the base portion 402 and fixed to the support block 401. The base portion 402 is connected to the first rotation axis A1 via a bearing (not shown) and is held rotatably about the first rotation axis A1 relative to the support block 401. The first rotation axis A1 is rotated by driving a motor (not shown). The base portion 402 is rotated about the first rotation axis A1 by the rotation of the first rotation axis A1.

The configuration of the second processing tool unit 400 can be that described in Japanese Patent Application Laid-Open No. 2017-177234, so please refer to this publication for details.

<Mobile unit>
The moving unit 300 includes a first moving unit 310 that changes the relative positional relationship between the lens LE and the processing tools (the processing tool 163, the roughing tool 423, etc.) in the axis L1 direction (hereinafter referred to as the X direction) of the lens chuck shaft 102. The moving unit 300 also includes a second moving unit 330 that changes the relative positional relationship between the lens chuck shaft 102 and the processing tool rotation shafts (the processing tool rotation shaft 161 and the second processing tool drive shaft 412, etc.) in the inter-axial distance direction (hereinafter referred to as the Y direction). The second moving unit 330 is also used to change the positional relationship in the Y direction between the tracing stylus 260 and the tracing stylus 263 (see FIG. 4 ) of the lens shape measuring unit 200 and the lens LE held by the lens chuck shaft 102. The first moving unit 310 is also used to change the positional relationship in the X direction between the stylus 260 (see FIG. 4) held by the lens shape measuring unit 200 and the lens LE held by the lens chuck shaft 102. In this embodiment, the Y direction is a direction perpendicular to the X direction.

The first moving unit 310 is equipped with a motor 315. Rotation of the motor 315 moves the moving support base 301 in the X direction. This causes the carriage 101 and lens chuck shaft 102 (lens LE) mounted on the moving support base 301 to move in the X direction. Note that the first moving unit 310 may be configured to move each processing tool, such as the roughing tool 423, and each measuring probe, such as the measuring probe 290, in the X direction.

The second moving unit 330 is equipped with a motor 335 for moving the carriage 101 (lens chuck shaft 102) in the Y direction. A shaft 333 extending in the Y direction is attached to the moving support base 301. A motor 335 is fixed to the moving support base 301. The rotation of the motor 335 is transmitted to a ball screw 337 extending in the Y direction, and the rotation of the ball screw 337 moves the carriage 101 (lens chuck shaft 102 and lens LE) in the Y direction.

In the embodiment, the second moving unit 330 is configured to move the lens chuck shaft 102 in the Y direction, but it may also be configured to move each processing tool, such as the roughing tool 423, and the measuring probe, such as the measuring probe 290, in the Y direction.

<Lens shape measurement unit>
FIG. 4 is a schematic diagram of the lens shape measuring unit 200. The lens shape measuring unit 200 includes a tracing stylus 260 for measuring the refractive surface shape of the lens LE. In this embodiment, the tracing stylus 260 includes a tracing stylus 261 that contacts the front surface of the lens LE and a tracing stylus 262 that contacts the rear surface of the lens LE. The tracing stylus 262 has a cylindrical side surface. The side surface of the tracing stylus 262 is used as a tracing stylus 263 that contacts the outer periphery of the lens LE to measure the external shape of the lens LE. The lens shape measuring unit 200 also includes a sensor (detector) 271 for detecting the movement positions of the tracing stylus 261 and 262 in the X direction, and a sensor (detector) 273 for detecting the movement position of the tracing stylus 263 in a direction away from the lens chuck shaft 102.

The probes 261 and 262 are held by an arm 265 that is movable in the X direction. In this embodiment, the arm 265 has a U-shape. Also, in this embodiment, the arm 265 is attached to a support 267, which is held by a block 269 so that it can move in the X-axis direction. The support 267 is biased toward the front and rear of the lens LE by springs (biasing members) (not shown), with the state in Figure 2 being its neutral position. The movement positions of the probes 261 and 262 in the X direction are detected by a sensor 271 via the arm 265 and the support 267. A well-known configuration is used for the sensor 271.

When measuring the refractive surface shape of the lens LE, the lens LE is rotated by rotating the lens chuck shaft 102, and the movement of the lens chuck shaft 102 in the Y direction is controlled based on the target lens shape, allowing the sensor 271 to detect the X direction positions of the front and rear surfaces of the lens LE corresponding to the target lens shape. Note that in the device of this embodiment, the refractive shape of the front and rear surfaces of the lens LE is measured by also utilizing the X direction movement control of the lens chuck shaft 102.

The configuration of the lens shape measuring unit 200 is not limited to the above, and may be any configuration that can measure the refractive surface shapes of the front and rear surfaces of the lens LE. For example, the configuration may be such that the measuring probe is brought into contact with the front and rear refractive surfaces simultaneously, and the front and rear refractive surfaces are measured simultaneously.

The support pillar 267 is attached to the block 269 so as to be tiltable rearward (away from the lens chuck shafts 102L and 102R) around an axis S1 extending parallel to the X direction. The support pillar 267 is constantly biased forward by a spring (biasing member) (not shown). The forward tilt of the support pillar 267 is limited in the state shown in Figure 2 by a limiting member (not shown). When measuring the outer shape of the lens LE, the tracing stylus 263 comes into contact with the outer periphery of the lens LE, and the lens LE is rotated, thereby moving the tracing stylus 263 in a direction away from the lens chuck shaft 102 in accordance with the outer shape of the lens LE. In other words, the support pillar 267 is tilted around the axis S1 in accordance with the outer shape of the lens LE. The tilt of the support pillar 267 is detected by the sensor 273. In other words, the sensor 273 detects the movement position of the tracing stylus 263 in a direction away from the lens chuck shaft 102. This allows the outer shape of the lens LE to be measured around the lens chuck axis 102.

<Control system configuration>
Fig. 5 is a control block diagram of the eyeglass lens processing apparatus 1. The eyeglass lens processing apparatus 1 includes a control unit 50. The electrical components (motors, sensors, etc.) of each unit shown in Figs. 1 and 4 are connected to the control unit 50. The control unit 50 controls the motors of each unit to process the periphery of the lens LE.

The eyeglass lens processing apparatus 1 includes a data acquisition unit 10. The data acquisition unit 10 may also function as an input unit. For example, the data acquisition unit 10 includes a display 60. For example, the data acquisition unit 10 includes an input unit 13. For example, the display 60, which is an example of a display means, may have touch panel functionality and be configured to include the input unit 13. For example, the control unit 50 constitutes part of the data acquisition unit 10 and acquires various data. For example, the control unit 50 also functions as an output means for outputting various information. A memory 20 is connected to the control unit 50, and various data acquired by the data acquisition unit 10 is stored in the memory 20. The memory 20 also stores various programs for controlling the operation of the eyeglass lens processing apparatus 1. For example, the memory 20 stores a program for obtaining a predicted value (described below) of the processing load when processing the lens LE with a processing tool. For example, the memory 20 stores a program related to peripheral processing of the lens LE.

The data acquisition unit 10 may be connected to a lens shape measuring device 30. For example, the lens shape measuring device 30 measures the rim of an eyeglass frame to obtain the lens shape of the lens LE (the target outer shape for processing the periphery of the lens LE). The lens shape may also be stored in memory 20. The data acquisition unit 10 acquires lens shape data from the lens shape measuring device 30 or memory 20. Note that a "lens shape" is a two-dimensional shape defined by a radius vector length and a radius vector angle. The data acquisition unit 10 also serves as a lens material acquisition means for acquiring material data of the lens LE.

<Operation>
The operation of the eyeglass lens processing apparatus 1 having the above configuration will be described. First, the data acquisition unit 10 acquires the lens shape data TD (radial vector length r, radial vector angle θ) of the lens LE. For example, the contour shape of the rim of the eyeglass frame measured by the lens shape measuring device 30 is input to the data acquisition unit 10. The lens shape data TD may be acquired by the data acquisition unit 10 by calling up data stored in the memory 20.

<Setting processing conditions>
Once the lens shape data TD has been acquired, the operator sets (inputs) the processing conditions for processing the periphery of the lens LE using the display 60. FIG. 6 shows an example of the screen of the display 60 when setting the processing conditions. In FIG. 6, a right-eye lens shape figure TGR and a left-eye lens shape figure TGL are displayed on a screen 610 of the display 60. For processing the periphery of the lens LE, layout data for locating the optical center position of the lens LE relative to the lens shapes is input. For example, the layout data includes the distance FPD between the left and right lens centers (the distance between the geometric center TCR of the right-eye lens TGR and the geometric center TCL of the left-eye lens TGL), the interpupillary distance PD (the distance between the optical center OCR for the right eye and the optical center OCL for the left eye), and the height distance of the optical centers relative to the geometric centers of the left and right lens shapes. These values can be input using a numeric keypad that appears when the display field on the screen is touched.

Furthermore, as a processing condition, the material of the lens LE can be set in the input field 621a. For example, a general plastic known as CR39, high refractive index plastic, acrylic, etc. can be selected as the material for a thermosetting lens. Furthermore, Trivex, polycarbonate, etc. can be selected as the material for a thermoplastic lens. The material information for the lens LE set in the input field 621a is acquired by the data acquisition unit 10.

Other processing conditions can be set using input fields 621b, 621c, 621d, 621e, and 621f, including the frame type (metal, cell, rimless, etc.), lens edge processing mode (auto beveling, forced beveling, flat processing, etc.), whether to have a mirror finish, whether to have a chamfer, and the lens chucking mode (frame center mode, optical center mode).

Once the processing conditions have been set, the operator holds the lens LE on the lens chuck shaft 102 and starts operation of the eyeglass lens processing device 1.

<Lens shape measurement>
Prior to peripheral processing of the lens LE, the control unit 50 executes an eyeglass lens shape measurement program, and the lens shape measuring unit 200 measures the shape of the lens LE. For example, first, the outer shape of the lens LE is measured. The control unit 50 drives the first moving unit 310 to move the lens LE to a position within the measurement range of the tracing stylus 263. Then, the second moving unit 330 drives the lens LE in the Y direction (toward the tracing stylus 263) so that the outer periphery of the lens LE contacts the tracing stylus 263. The contact of the lens LE with the tracing stylus 263 is detected by the sensor 273. Then, with the lens LE in contact with the tracing stylus 263, the lens LE is rotated once, thereby measuring the outer shape of the lens LE. In this embodiment, the movement control of the lens chuck shaft 102 in the Y direction is utilized, and outer shape data of the lens LE is obtained based on the movement position of the lens chuck shaft 102 in the Y direction and the detection result of the sensor 273. The external shape data of the lens LE is stored in the memory 20 .

Next, the lens shape measurement unit 200 measures the front and rear shapes of the lens LE. Measurement of the front and rear shapes of the lens LE is performed, for example, based on two measurement trajectories (first measurement trajectory, second measurement trajectory) corresponding to the target lens shape data. For example, the first measurement trajectory may be the trajectory of the target lens shape, or it may be a trajectory that varies a certain distance in the radial direction (inward or outward) relative to the target lens shape. For example, the second measurement trajectory is a trajectory that is a certain distance (e.g., 0.8 mm) outward from the first measurement trajectory.

For example, the front surface of the lens is measured first. The control unit 50 controls the drive of the moving unit 300, and moves the lens LE (lens chuck shaft 102) in the Y direction so that the position of the tracing stylus 261 in the Y direction is the position of the first measurement trajectory. Next, the lens LE is moved in the X direction so that the front surface of the lens comes into contact with the tracing stylus 261. Contact of the front surface of the lens with the tracing stylus 261 is detected based on the output signal of the sensor 271. The X-direction position of the front surface of the lens at this time is obtained based on the control data (drive data of the motor 315) for moving the lens chuck shaft 102 in the X direction and the detection data of the sensor 271. Then, the lens LE is rotated and the drive of the moving unit 300 is controlled, and the lens LE is moved in the Y direction so that the position of the tracing stylus 261 in the Y direction is the position of the measurement trajectory. Furthermore, the lens LE is moved in the X direction based on the measurement results of the front surface of the lens so that the position of the tracing stylus 261 in the X direction is within a predetermined range. Then, by rotating the lens LE once, the shape of the lens front surface in the X direction on the first measurement trajectory is obtained based on the detection results of the sensor 271 and the control data in the X direction of the lens chuck shaft 102. Note that the control operation during this measurement can use the technology described in Japanese Patent Application Laid-Open No. 2014-4678, so please refer to that publication for details.

In addition, during rough machining using the cutter or end mill rough machining tool 423, the lens LE is cut at multiple locations from the periphery of the lens LE's outer shape to the rough machining path corresponding to the lens shape. The lens shape measuring unit 200 also measures the refractive surface shape of the lens LE along these multiple cutting paths.

For example, Figure 7 is a diagram showing an example of a machining path for rough machining. Figure 7 shows the movement of the rough machining tool 423 relative to the lens LE. In Figure 7, the rough machining tool 423 moves along paths M1, M2, M3, and M4 in that order. The rough machining path LM3 is determined so as to leave a predetermined finishing allowance (e.g., 0.8 mm) relative to the target lens shape data TD (i.e., the finish machining path LF1). The machining path LM1 of path M1 is a path in the 0-degree direction of the target lens shape, extending from the periphery of the lens LE to the rough machining path LM3. The machining path LM2 of path M2 is a path 180 degrees opposite to the machining path LM1, extending from the periphery of the lens LE to the rough machining path LM3.

For example, when measuring the refractive surface shape of the front surface of a lens corresponding to the processing trajectory LM1, the rotation of the lens LE is stopped when the tracing stylus 261 is positioned in the 0-degree direction of the target lens shape, and the lens LE (lens chuck shaft 102) is moved in the Y direction from the first measurement trajectory toward the lens outer shape while the tracing stylus 261 remains in contact with the front surface of the lens. The sensor 271 detects that the tracing stylus 261 has reached the outer shape of the lens LE by a sudden change in its position in the X direction. This allows the refractive surface shape of the front surface of the lens corresponding to the processing trajectory LM1 to be obtained.

Similarly, when measuring the refractive surface shape of the front surface of the lens corresponding to the processing trajectory LM2, the rotation of the lens LE is stopped when the stylus 261 is positioned 180 degrees from the target lens shape, and the lens LE is moved in the Y direction while the stylus 261 remains in contact with the front surface of the lens. This allows the refractive surface shape of the front surface of the lens corresponding to the processing trajectory LM2 to be obtained.

Next, the front surface of the lens is measured using similar control based on the second measurement trajectory. Note that if the refractive surface shape of the processing trajectories LM1 and LM2 has been obtained, measurement based on the processing trajectories LM1 and LM2 does not need to be performed during the measurement stage of the second measurement trajectory. By obtaining the shape of the front surface of the lens based on the two measurement trajectories, curve information for the front surface of the lens and the tilt angle near the target lens shape can be obtained.

Next, the rear surface of the lens is similarly measured based on the first and second measurement trajectories. The refractive surface shape of the rear surface of the lens corresponding to the processing trajectories LM1 and LM2 is also measured. Then, by obtaining the shape of the rear surface of the lens based on the two measurement trajectories, curve information of the rear surface of the lens and the tilt angle near the target lens shape are obtained. The refractive surface shape data of the front and rear surfaces of the lens is stored in memory 20.

In the above, the refractive surface shape is measured based on two measurement trajectories (first measurement trajectory, second measurement trajectory). However, measurement can also be performed in one rotation of the lens LE by determining one measurement trajectory that has a component that is partially displaced in the radial direction relative to the first measurement trajectory (see JP 2021-133465 A for details).

<Rough processing>
After the measurement of the lens shape is completed, the process proceeds to the roughing process. In the roughing process of the present disclosure, a first area (rear area RPA) and a second area (front area FPA) within the processing area PA of the roughing tool 423 shown in FIG. 2 are selectively changed based on the lens material information acquired by the data acquisition unit 10.

Here, we will explain why the first area (rear area RPA) and the second area (front area FPA) are changed depending on the lens material information.

Conventionally, in eyeglass lens processing devices such as those disclosed in Patent Document 1 (JP 2014-198360 A), dedicated rough cutting tools have been prepared for processing thermoplastic lenses and thermosetting lenses, respectively, from the perspective of cutting performance. For example, a cutting tool made of cemented carbide is used as is for processing thermoplastic lenses. On the other hand, a cutting tool with artificial diamond brazed to the cutting edge is prepared for processing thermosetting lenses. However, preparing two types of cutting tools requires a mechanism to rotate each tool, which complicates the device configuration and increases the device costs.

To address this issue, we first prepared a tool (e.g., a cutter) made of cemented carbide that is suitable for processing thermosetting lenses. The tool's processing area PA is coated (e.g., with diamond-like carbon) to reduce wear on the tool (cutting edge) when processing thermosetting lenses. While brazing artificial diamond to the cutting edge of a tool results in a thicker cutting edge, the coating is only a few microns thick, eliminating the need to increase the cutting edge (i.e., the diameter of the tool).

However, it was discovered that if a single tool was used to process a small number of Trivex lenses (e.g., around 10 lenses) and then a thermosetting lens (e.g., a typical CR39 plastic lens), damage such as cracking of the lens occurred. It was discovered that processing a thermoplastic Trivex lens with a cemented carbide tool caused damage to the tool, which then had an effect on the fragile thermosetting lens. The damage to the tool is thought to occur primarily when Trivex cutting chips are fused to the cutting edge of the tool when processing a Trivex lens, which cools and hardens. When the next lens is processed, the fused portion peels off, causing chips in the cutting edge of the tool. Therefore, using a single tool in the usual way was not enough to process both thermoplastic and thermosetting lenses without any problems.

In this disclosure, by selectively changing the first region (rear region RPA) and the second region (front region FPA) within the processing area PA depending on the lens material, it is possible to process both thermoplastic and thermosetting lenses with a single rough processing tool 423. While coating the processing area PA is not essential, applying a coating further improves the durability of the processing tool, making it possible to process a larger number of thermosetting lenses. Furthermore, even with a coated processing tool, when processing thermoplastic lenses such as Trivex, it was possible to process a certain number of eyeglass lenses (e.g., 1,000 or more) without damaging the eyeglass lenses or significantly reducing cutting performance.

Returning to the explanation of the roughing operation, the control unit 50 rotates the holder 411 of the second processing tool drive shaft 412 around the second rotation axis A2 to position the roughing tool 423 at a predetermined processing position. Based on the refractive surface position data of at least one of the front and rear refractive surfaces of the lens LE acquired by lens shape measurement, the control unit 50 then controls the moving unit 300 to process the lens LE within the rear area RPA of the first area set in the processing area PA of the roughing tool 423 if the lens material is thermoplastic Trivex. If the acquired lens material is thermosetting CR39 general plastic, high refractive index plastic, or acrylic, the control unit 50 controls the moving unit 300 to process the lens LE within the front area FPA of the second area set in the processing area PA of the roughing tool 423.

Figure 8 is a diagram illustrating a specific processing operation in which the rear area RPA and front area FPA are changed depending on the lens material. Note that rough processing using the rough processing tool 423 involves moving the rough processing tool 423 along processing trajectories LM1, LM2, and LM3 in this order, which correspond to the paths M1, M2, M3, and M4 shown in Figure 7.

<Rough processing of thermoplastic Trivex lenses>
8A is a diagram illustrating the processing operation for a lens made of Trivex, an example of a thermoplastic lens material. In FIG. 8A, a processing reference position Srp is set at a position a certain distance dr (e.g., 3 mm) away from the boundary point Bp between the rear region RPA and the front region FPA of the roughing tool 423 toward the rear end of the roughing tool 423 (in other words, a position set closer to the front of the rear region RPA). The certain distance dr is determined based on the maximum curve of the rear refractive surface LEr of the lens LE that can be processed, the maximum diameter of the lens LE that can be processed, the inclination angle α of the second processing tool rotation axis 412, and the diameter Dt of the roughing tool 423. This distance dr is determined so that the processing position of the lens LE processed at the position of the roughing tool 423 farther from the lens chuck shaft 102 does not enter the front region FPA.

First, to process the lens LE along the processing path LM1, the control unit 50 controls the driving of the moving unit 300 so that the processing reference position Srp is positioned along the rear refractive surface LEr of the lens LE on the processing path LM1, and moves the lens LE in the Y and X directions. Next, to process the lens LE along the processing path LM2, the control unit 50 temporarily releases the lens LE from the rough processing tool 423 and then rotates the lens LE 180 degrees. Thereafter, the control unit 50 controls the driving of the moving unit 300 so that the processing reference position Srp is positioned along the rear refractive surface LEr of the lens LE on the processing path LM2, and moves the lens LE in the Y and X directions, processing until the rough processing tool 423 reaches the processing path LM3.

After the roughing tool 423 reaches the processing path LM3, the control unit 50 controls the drive of the moving unit 300 while rotating the lens LE so that the posterior refractive surface LEr of the lens LE corresponding to the roughing path LM3 is positioned at the processing reference position Srp. By moving the lens LE in the Y and X directions, the roughing tool 423 moves relatively along the roughing path LM3. As the roughing tool 423 moves relatively to the previously processed path M1, the portion of the lens outside path M3 is cut off. Furthermore, as the roughing tool 423 moves relatively to path M2, the remaining portion of the lens outside path M4 is cut off. This completes the roughing of the thermoplastic Trivex lens LE. Through this control, the thermoplastic Trivex lens LE is processed within the posterior region RPA (i.e., the thermoplastic Trivex lens is processed without extending into the anterior region FPA within the second region, which is the processing region for the thermoset lens).

As described above, when processing the lens LE within the rear area RPA, the moving unit 300 is controlled so that the rear refractive surface LEr is positioned at the processing reference position Srp, which is set on the central side of the processing area PA of the rough processing tool 423 (closer to the boundary point Bp). This makes it possible to reduce the minimum processing diameter of the lens LE that can be processed when the rough processing tool 423 is tilted at an angle α. Furthermore, this control makes it possible to make the edge thickness of the lens LE that can be processed within the rear area RPA as thick as possible.

<Rough processing of thermosetting lenses>
8B is a diagram illustrating the processing operation when the lens LE is a thermosetting lens (for example, a normal plastic lens made of CR39). The rough processing trajectory of the rough processing tool 423 is the same as that shown in FIG.

In Figure 8 (b), the processing reference position Sfp is set at a position a certain distance df (e.g., 2 mm) away from the boundary point Bp of the roughing tool 423 toward the front end of the roughing tool 423 (in other words, a position set toward the rear within the front area FPA), and the thermosetting lens LE is processed in the front area FPA. Note that the certain distance df assumes a zero curve (flat) of the front refractive surface LEf of the lens LE, and is determined based on the inclination angle α of the second processing tool rotation axis 412 and the diameter Dt of the roughing tool 423 as a distance such that the processing position of the lens LE processed at the position of the roughing tool 423 away from the lens check shaft 102 does not enter the rear area RPA.

In the case of a thermosetting lens LE, the control unit 50 controls the driving of the moving unit 300 and moves the lens LE in the Y and X directions based on the position information of the front refractive surface LEf corresponding to the processing trajectories LM1, LM2, and LM3 so that the front refractive surface LEf is positioned at the processing reference position Sfp. Through this control, the thermosetting lens LE is processed within the front area FPA (i.e., the thermosetting lens is processed without extending into the rear area RPA of the first area, which is the processing area for thermoplastic lenses).

As described above, when processing the lens LE within the front area FPA, the moving unit 300 is controlled so that the front refractive surface LEf is positioned at the processing reference position Sfp set at the center of the processing area PA of the rough processing tool 423 (closer to the boundary point Bp). This reduces the impact of vibration of the rough processing tool 423 compared to when processing the lens LE in front of the front area FPA, and allows the peripheral edge of the lens LE to be processed with high precision. Furthermore, this control makes it possible to make the edge thickness of the lens LE as thick as possible within the front area FPA.

Furthermore, as described above, based on the positional information of the front refractive surface LEf and the rear refractive surface LEr, if the lens material is Tribex, the moving unit 300 is controlled to process the lens LE in the first region (rear region RPA), and if the lens material is thermoplastic, the moving unit 300 is controlled to process the lens LE in the second region (front region FPA).This makes it possible to appropriately divide the processing region according to the lens material and process the lens LE even if it is a highly curved lens (a lens with a strong curve) without increasing the effective blade length (processing region PA) of the roughing tool 423.

In this disclosure, the second area for processing thermosetting lenses is set in the anterior area FPA because, in terms of the ratio of thermosetting Trivex lenses and thermosetting lenses used, the anterior area FPA generally has a higher ratio of thermosetting lenses and is therefore more advantageous as it reduces the minimum processable diameter of the lens LE.

Although polycarbonate lenses are thermoplastic, they cause less damage to cemented carbide machining tools than Trivex lenses, and are comparable to machining other thermosetting lenses. For this reason, polycarbonate lenses may be machined in the second area (anterior area FPA) for machining thermosetting lenses, or in the first area (posterior area RPA) for machining Trivex lenses, which are specified thermoplastic lenses. In this example, taking into account the minimum machining diameter that can be machined for the lens LE, the polycarbonate lens is set to be machined in the second area (anterior area FPA).

<Finishing processing>
The operation of the finishing process will be briefly described. After the roughing process is completed, the process proceeds to the finishing process. For example, if the lens LE is a low-curve lens and beveling is set, the control unit 50 uses a predetermined calculation method to determine a finishing trajectory LF1 (see FIG. 7 ) including the X-direction position of the bevel apex position corresponding to the target lens shape, based on the measurement results of the lens shape measuring unit 200. The control unit 50 then controls the drive of the moving unit 300 based on the finishing trajectory LF1, causing the finishing tool 163c to finish the periphery of the roughly finished lens LE. Note that if the lens LE is a high-curve lens and beveling is set, the finishing process is performed by the finishing tool 163a. Also, if flat finishing is set, the finishing process is performed using the flat finishing surface of the finishing tool 163c.

<Example of transformation>
In the above description, the case where the second processing tool rotation axis 412 of the roughing tool 423 is inclined at the angle α has been described, but the second processing tool rotation axis 412 may be parallel to the lens chuck axis 102. In this case, the minimum processing diameter at which the lens LE can be processed is the same regardless of where the lens LE is processed within the processing area PA, so the first area for processing thermoplastic lenses may be set as the front area FPA, and the second area for processing thermosetting lenses may be set as the rear area RPA.

In addition, in the above explanation, when processing the lens LE using the rear area RPA, the processing reference position Srp is set at a position a certain distance dr toward the rear end of the roughing tool 423, and the rear refractive surface LEr of the lens LE is controlled to be located at that processing reference position Srp, but this control is not limited to this. In other words, when the second processing tool rotation axis 412 is parallel to the lens chuck axis 102, there is no need to consider the minimum processing diameter of the lens LE. Therefore, for example, as with processing the lens LE using the front area FPA, the processing reference position Srp may be set to the rear side within the rear area RPA, and the front refractive surface LEf of the lens LE may be controlled to be located at that processing reference position Srp.

Furthermore, when it is not necessary to consider the minimum processing diameter of the lens LE, in lens processing using the posterior region RPA, the processing reference position Srp may be set to the center of the posterior region RPA, and the central positions of the front refractive surface LEf and the posterior refractive surface LEr of the lens LE may be controlled to be located at the processing reference position Srp. In lens processing using the anterior region FPA, the processing reference position Sfp may also be set to the center of the anterior region FPA, and the central positions of the front refractive surface LEf and the posterior refractive surface LEr of the lens LE may be controlled to be located at the processing reference position Sfp.

Furthermore, if the inclination angle α of the second processing tool rotation axis 412 is configured to be changeable, the fixed distance dr for determining the processing reference position Srp and the fixed distance df for determining the processing reference position Sfp may be changed according to the angle α.

Furthermore, in the above, two examples of the processing area that changes depending on the lens material, the first area and the second area, have been described, but the processing area PA may also be divided into three or more areas to accommodate three or more lens materials.

Furthermore, in the above description, the processing tool that selectively changes the processing area based on the material data of the lens LE is the rough processing tool 423, but this is not limited to this. For example, if the finishing processing tool is a cutter, the technology disclosed herein may also be applied to the finishing processing tool.

The above describes typical embodiments of the present disclosure, but the present disclosure is not limited to the embodiments shown here, and various modifications are possible within the scope of the same technical concept of the present disclosure.

REFERENCE SIGNS LIST 1 eyeglass lens processing device 10 data acquisition unit 50 control unit 102 lens chuck shaft 200 lens shape measuring unit 300 moving unit 412 second processing tool rotation axis 423 rough processing tool PA processing area RPA rear area FPA front area

Claims (6)

An eyeglass lens processing device that processes the periphery of an eyeglass lens held by a lens holding shaft,
a lens material acquisition means for acquiring material data of the eyeglass lens;
A processing tool having a processing area for processing the periphery of an eyeglass lens, the processing tool having the processing area in a single member integrally manufactured from a common material ;
a moving means for changing the relative positional relationship between the eyeglass lens held by the lens holding shaft and the processing tool;
a control means for controlling the moving means so as to change an area within the processing area within the same member and process the eyeglass lens based on the acquired material data;
An eyeglass lens processing device comprising: 2. The eyeglass lens processing apparatus according to claim 1,
The eyeglass lens processing device is characterized in that the processing tool is a single processing tool consisting of a cutter or an end mill . 3. The eyeglass lens processing apparatus according to claim 1 ,
The eyeglass lens processing device is characterized in that the control means controls the moving means so that, when the material data is a predetermined thermoplastic first lens material, the eyeglass lens is processed within a first area set in the processing area of the processing tool, and, when the material data is a predetermined thermosetting second lens material, the eyeglass lens is processed within a second area set in the processing area of the processing tool, which is set in an area different from the first area . An eyeglass lens processing device that processes the periphery of an eyeglass lens held by a lens holding shaft,
a lens material acquisition means for acquiring material data of the eyeglass lens;
a processing tool having a processing area for processing the periphery of the eyeglass lens;
a moving means for changing the relative positional relationship between the eyeglass lens held by the lens holding shaft and the processing tool;
a control means for controlling the moving means so as to change an area within the processing area and process the eyeglass lens based on the acquired material data;
a refractive surface position acquisition means for acquiring refractive surface position data of at least one of the front and rear refractive surfaces of the eyeglass lens in the axial direction of the lens holding shaft,
The control means controls the moving means so that, when the material data indicates a predetermined thermoplastic first lens material, the eyeglass lens is processed within a first region set in the processing region of the processing tool, and, when the material data indicates a predetermined thermosetting second lens material, the eyeglass lens is processed within a second region set in the processing region of the processing tool, which is set in a region different from the first region;
The eyeglass lens processing device is characterized in that the control means controls the moving means to process the eyeglass lens within the first area if the eyeglass lens is made of the first lens material, and controls the moving means to process the eyeglass lens within the second area if the eyeglass lens is made of the second lens material, based on the refractive surface position data acquired by the refractive surface position acquisition means. 5. The eyeglass lens processing apparatus according to claim 4 ,
The rotation axis of the processing tool is inclined so that the tip side of the processing tool approaches the lens holding axis,
The control means (a) controls the moving means so that the position of the anterior refractive surface of the eyeglass lens is located at a first reference position set closer to the rear within the front region when processing the eyeglass lens in a front region of the first region and the second region that is located in front of the processing tool, and (b) controls the moving means so that the position of the posterior refractive surface of the eyeglass lens is located at a second reference position set closer to the front within the rear region when processing the eyeglass lens in a rear region of the first region and the second region that is located closer to the rear of the processing tool than the front region. A spectacle lens processing control program executed by a spectacle lens processing device comprising: a processing tool having a processing area for processing a periphery of a spectacle lens, the processing tool having the processing area in a single member integrally manufactured from a common material; a moving means for changing the relative positional relationship between the spectacle lens held by a lens holding shaft and the processing tool; and a lens material acquisition means for acquiring material data of the spectacle lens,
By being executed by the control unit of the eyeglass lens processing apparatus,
A spectacle lens processing control program characterized by causing an eyeglass lens processing device to execute a control step of controlling the moving means so as to change an area within the processing area within the same member and process the eyeglass lens based on acquired lens material data.