JP5198978B2 - Eyeglass frame shape measuring device - Google Patents

Description

  The present invention relates to a spectacle frame shape measuring apparatus for measuring the shape of a rim (lens frame) of a spectacle frame that frames a spectacle lens.

  A spectacle frame holding mechanism for holding the spectacle frame in an expected state, and a probe inserted into a groove of the rim (lens frame) of the spectacle frame is moved along the groove of the rim, and the movement of the probe is detected. A spectacle frame shape measuring apparatus is known that includes a measurement unit that obtains a three-dimensional shape of a rim, and a left-right movement mechanism that moves the measurement unit in the left-right direction between a right rim measurement position and a left rim measurement position ( For example, see Patent Documents 1 and 2). The spectacle frame holding mechanism includes two sliders that press from the vertical direction of the spectacle frame (vertical direction when worn) and determine the vertical position of the spectacle frame, and each slider has a clamp pin that clamps the left and right rims respectively. Is provided.

In this apparatus, in the case of both frame traces for measuring both the left and right rims, for example, the shape measurement of the right rim is completed and the probe is lowered after being removed from the rim groove. Thereafter, the measurement unit is moved to a predetermined initial position for measuring the left rim by the left-right movement mechanism. Then, similarly to the right rim, a measuring element is inserted into the groove of the left rim, and the shape of the left rim is measured. Based on the measurement results of both frame traces, information such as the center-to-center distance (FPD) of the left and right eyeglasses, the nose side edge distance of the left and right eyeglasses, and the warp angle of the spectacle frame is obtained.
JP 2000-314617 A JP-A-4-93163

  By the way, in recent years, with the diversification of eyeglass frame designs, the number of high-curve frames with sharp frame warping angles has increased, and the bridge connecting the left and right rims has largely pushed forward (the front side when worn). Has also been used. In both frame traces of such a spectacle frame, when the probe is moved in the direction from the right rim to the left rim, if the probe is not lowered sufficiently downward, it may contact the bridge of the spectacle frame. In other words, there is a problem of contact with the rim frame of the high curve frame. In the case of such a frame, the operator had to give up the traces on both frames, clamp only one rim with a clamp pin, and trace each frame. In this case, information such as the distance between the centers of the left and right rims and the curvature angle of the spectacle frame cannot be obtained by tracing both frames. To prevent the probe from coming into contact with the rim of the bridge or the high curve frame in both frame traces, it is necessary to lower the probe sufficiently from the clamp pin position. Turn into. In addition, if the distance of the vertical movement of the probe is increased to accommodate the measurement of the high curve frame, and the position of the lowest point where the probe is lowered when tracing both frames is greatly separated from the position of the clamp pin, The vertical height of the device tends to increase.

  The present invention provides a spectacle frame shape measuring apparatus capable of tracing both frames of a high-curved frame, a frame of a type in which a bridge protrudes to the front surface, etc. This is a technical issue.

  In order to solve the above problems, the present invention is characterized by having the following configuration.

(1) It has clamp pins for clamping the right lens frame and the left lens frame of the spectacle frame, respectively, and from the vertical direction (Y direction) when the frame is worn with respect to the left and right direction (X direction) of the right lens frame and the left lens frame. Eyeglass frame holding means having a first slider and a second slider for pressing and holding the right lens frame and the left lens frame ;
A measuring unit having a measuring element moving mechanism for moving a measuring element along the groove of the lens frame, and an XY moving mechanism for moving the measuring element in the radial direction (XY direction) of the lens frame and the radial direction of the lens frame A measuring unit that has a Z moving mechanism that moves the measuring element in a vertical direction (Z direction) perpendicular to Z, and that detects the movement of the measuring element to obtain a three-dimensional shape of the lens frame;
A left-right movement mechanism for moving the measurement unit in the left-right direction when tracing both frames;
In a spectacle frame shape measuring apparatus comprising:
A path formed in the first or second slider so that the measuring element can pass when the measuring unit is moved left and right during both-frame tracing , and the Z moving mechanism moves the measuring element. A passage formed below the clamp pin in the vertical direction ;
After the measurement of one lens frame is completed, the measuring element moving mechanism and the left / right moving mechanism are controlled, the measuring element is moved to the passage formed in the first or second slider, and the other lens frame is measured. Control means for moving the measuring element to a predetermined initial position;
It is characterized by providing.
(2) In the spectacle frame shape measuring apparatus of (1),
The control means controls the Z moving mechanism after the measurement of one lens frame is completed to move the measuring element below the clamp pin, and then controls the XY moving mechanism to lower the clamp pin. To move the probe to the path, and then actuate the left-right movement mechanism to move the probe to the other lens frame side, and then move the XY movement mechanism. To move the probe to the initial position of the other lens frame by passing below the clamp pin .
(3) In the spectacle frame shape measuring apparatus according to (2), the control means sets the position of the lens frame to be moved to the path by passing under the clamp pin after the measurement of one lens frame is completed. It sets based on the shape measurement result of this.
(4) The spectacle frame shape measuring device according to any one of claims 1 to 3 may be configured to pass the passage when the measuring element is moved to the initial measurement position of the other lens frame after the measurement of the one lens frame is completed. Selecting means for selecting a first path for moving the probe and a second path for moving the probe without passing through the passage;
When the second path is selected, the control means controls the left / right movement mechanism after the measurement of one lens frame is completed, and passes under the left and right lens frames to the initial position of the other lens frame. It is characterized by moving the measuring element directly.

  According to the present invention, it is possible to suppress the increase in size of the apparatus and to perform both-frame tracing on a high curve frame, a frame of a type in which a bridge protrudes to the front surface, and the like.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an external configuration of a spectacle lens processing apparatus incorporating a spectacle frame measuring apparatus. In FIG. 1, the spectacle frame measuring device 2 is disposed on the upper surface of the housing of the spectacle lens processing device 1. The spectacle frame measuring apparatus 2 includes a frame holding unit 200 configured as described later, a measuring unit 240 having a measuring element 280, and a left-right moving mechanism 240A for tracing both frames. On the upper surface of the processing apparatus 1, a switch panel 410 having a switch for inputting an operation signal to the spectacle frame measuring apparatus 2, a display 416 for displaying processing information, etc., input of processing conditions and instructions for processing A switch panel 420 having various switches to be performed is arranged. Reference numeral 402 denotes an opening / closing window for a processing chamber. The lens processing mechanism disposed in the processing apparatus 1 can be a well-known one described in Japanese Patent Application Laid-Open No. 2000-314617 and the like, and thus description thereof is omitted.

  FIG. 2 is a plan view of the frame holding unit 200 provided in the spectacle frame measuring apparatus 2 as viewed from above, and FIG. 3 is a view showing a main part of the AA cross section of FIG. The left-right direction of the paper surface of FIG. 2 is the X direction, and the vertical direction is the Y direction. A direction orthogonal to the XY plane is taken as a Z direction.

  2 and 3, a pair of first eyepieces positioned on the holding unit base 201 in the vertical direction of the spectacle frame F (the vertical direction when wearing spectacles) are opened and closed with the central reference line L1 as a center. A first slider 202 and a second slider 203 are arranged. The first slider 202 and the second slider 203 are slidably disposed on guide rails 204 and 205 disposed on the left and right of the holding unit base 201 and extending in the Y direction. The first slider 202 and the second slider 203 are pulled by a spring 213 in a direction toward the central reference line L1. By sliding one of the first slider 202 and the second slider 203 in the opening direction, an interval for holding the spectacle frame F is secured, and the first slider 202 and the second slider 203 are in a free state. The distance between the two is reduced by the biasing force of the spring 213. The first slider 202 and the second slider 203 press the eyeglass frame F from the up and down direction at the time of wearing, and determine the position of the eyeglass frame in the up and down direction. In this example, the first slider 202 is disposed on the front side (operator side) of the apparatus, and the second slider 203 is disposed on the back side (rear side) of the apparatus. As the configuration of the frame holding unit 200, one described in Japanese Patent Laid-Open No. 2000-214617 can be used.

  On the surface side of the first slider 202 facing the second slider, a pair of clamp pins 230Ra and 230Rb for clamping the right frame rim FR of the spectacle frame F from the thickness direction (vertical direction), and the left frame rim of the spectacle frame F A pair of clamp pins 230La and 230Lb are arranged to clamp the plate from the thickness direction (vertical direction). Similarly, clamp pins 231Ra and 231Rb for clamping the right frame rim FR and clamp pins 231La and 231Lb for clamping the left frame rim FL are arranged on the surface side of the second slider 203 facing the first slider 202. Yes. These clamp pins are arranged at the same height, and the spectacle frame F is held on the measurement reference plane.

  FIG. 4 is a configuration diagram of the clamp mechanism 230 of the clamp pins 230Ra and 230Rb disposed on the first slider 202. A base plate 2301 is disposed inside the first slider 202. The clamp pin 230Ra disposed on the upper side is attached to the tip of the first arm 2303. A central portion of the first arm 2303 is rotatably held by a rotation shaft 2304 with respect to the base plate 2301. The clamp pin 230 </ b> Rb disposed on the lower side is attached to the tip of the second arm 2305. A central portion of the second arm 2305 is rotatably held by a rotation shaft 2306 with respect to the base plate 2301. A compression spring 2307 is attached between the first arm 2303 and the second arm 2305, and the interval between the two clamp pins 230Ra and 230Rb is always urged in the opening direction. A gear 2309 having the same center as that of the rotation shaft 2304 is formed at the center of the first arm 2303. Similarly, a gear 2311 having the same center as the rotation shaft 2306 is formed at the center of the second arm 2305, and the gear 2309 is engaged with the gear 2311.

  A wire 2315 to which a spring 2313 is attached is fixed to the rear end of the first arm 2303, and the wire 2315 is attached to a shaft 220 shown in FIG. 2 via a pulley 2317 that is rotatably attached to a base plate 2301. It is attached. By rotating the shaft 220, the wire 2315 is pulled, and the first arm 2303 is rotated counterclockwise about the rotation shaft 2304. At this time, since the gear 2309 and the gear 2311 are meshed with each other, the second arm is rotated clockwise around the rotation shaft 2306. Thereby, the two clamp pins 230Ra and 230Rb are interlocked and closed.

  The shaft 220 is rotated by a clamping motor 223 shown in FIG. In FIG. 2, a motor 223 is attached to the back side of the holding unit base 201. A worm gear 224 is attached to the rotating shaft of the motor 223, and the rotation of the motor 223 is converted into the rotation of the shaft 220 by meshing with the 221 at one end of the shaft 220 rotatably attached to the holding portion base 201. The

  The clamp mechanism of the clamp pins 230La and 230Lb arranged on the first slider 202 and the clamp mechanism of the clamp pins 231Ra and 231Rb and clamp pins 231La and 231Lb arranged on the second slider are basically the same. The shaft 220 is rotated by driving the motor 223, and the four clamp pins are simultaneously opened and closed. As the configuration of such a clamp pin opening / closing mechanism, the one described in JP-A-4-93163 can be used.

  Next, the configuration of the measuring unit 240 having the measuring element 280 and the left / right moving mechanism 240A will be described with reference to FIGS. FIG. 5 is a plan view of the measurement unit 240 and the left / right moving mechanism 240A as viewed from above.

  In FIG. 5, the left-right moving mechanism 240A is configured as follows. The lateral movement base 241 is supported so as to be slidable in the left-right direction according to two rails 242, 243 that are supported by the holding portion base 201 and extend in the left-right direction. The lateral movement of the lateral movement base 241 is performed by driving a motor 244 attached to the holding unit base 201. A ball screw 245 is connected to the rotation shaft of the motor 244. The ball screw 245 is meshed with a female screw member 246 fixed to the lower side of the lateral movement base 241. When the motor 244 is rotated forward and backward, the lateral movement base 241 is moved in the left-right direction. When the command signals for both frame traces are input, for example, the lateral movement base 241 is first placed at a predetermined measurement position of the right rim FR, and the shape of the right rim is measured. Following the measurement of the right rim FR, the lateral movement base 241 is moved to a predetermined measurement position of the left rim FR by driving the motor 244 in order to measure the left rim FL.

  The measuring unit 240 includes an XY moving mechanism 250A that moves the measuring element 280 two-dimensionally in the radial direction of the rim, and a Z moving mechanism 260A that moves the measuring element 280 in a direction perpendicular to the radial direction of the rim. . The XY moving mechanism 250A further includes a rotating mechanism 250B and a lateral moving mechanism 250C. The rotation mechanism 250B is configured as follows. On the lateral movement base 241, a rotation base 250 is rotatably held by rollers 251 attached at three locations. As shown in FIG. 6, a gear portion 250 a is formed at the circumferential end of the rotation base 250, and a chevron-shaped guide rail 250 b that protrudes to the outer peripheral side is formed at the lower portion thereof. The guide rail 250b is in contact with the V-groove portion of each roller 251, and the rotation base 250 rotates while being held by the three rollers 251. The gear portion 250a of the rotation base 250 meshes with the idle gear 252. The idle gear 252 meshes with a gear 253 attached to the rotation shaft of the pulse motor 254 fixed to the lower side of the lateral movement base 241. Thereby, the rotation of the motor 254 is transmitted to the rotation base 250. A tracing stylus holding unit 255 including a lateral movement mechanism 250C and a Z movement mechanism 260A is attached to the lower surface of the rotation base 250.

  The configuration of the lateral movement mechanism 250C and the Z movement mechanism 260A will be described with reference to FIGS. 6 is a side view of the probe holding unit 255, and FIG. 7 is a view in the direction C of FIG. The lateral movement mechanism 250C is configured as follows. A fixed block 256 is fixed to the lower surface of the rotation base 250. A guide rail receiver 256a is attached to a side surface of the fixed block 256 so as to extend in the plane direction of the rotation base 250, and a lateral movement support base 260 having a slide rail 261 is slidably attached to the guide rail receiver 256a. ing. A DC motor 258 for moving the lateral movement support base 260 and an encoder 257 for detecting the movement amount are attached to the fixed block 256. A gear 257 a attached to the rotation shaft of the encoder 257 is meshed with a rack 262 fixed below the lateral movement support base 260. Further, the gear 257a is meshed with a gear attached to the rotation shaft of the motor 258 via the idle gear 259. As the motor 258 rotates, the lateral movement support base 260 is moved in the left-right direction in FIG. Further, the amount of movement of the lateral movement support base 260 is detected by the encoder 257.

  The Z moving mechanism 260A is configured as follows. A vertical support base 265 is supported on the lateral movement support base 260 so as to be vertically movable. The moving mechanism is the same as the lateral movement support base 260, and a slide rail (not shown) attached to the vertical support base 265 slides on a guide rail receiver 266 attached to the lateral movement support base 260 and extending in the vertical direction. It is held movable. A rack 268 extending in the vertical direction is fixed to the vertical support base 265. The rack 268 is meshed with a lateral movement support base 260 and a gear 270a attached to a rotary shaft of an encoder 270 attached by a fixed metal plate. Further, the gear 270a is engaged with a gear attached to the rotating shaft of the DC motor 272 via the idle gear 271. The vertical support base 265 is moved up and down by the rotation of the DC motor 272. The vertical movement position of the vertical support base 265 is detected by the encoder 270. The vertical support base 265 is reduced in load downward by the spring 275 attached to the lateral movement support base 260, and the vertical movement is smoothly performed with a light force.

  A measuring element shaft 276 is rotatably held by the vertical support base 265. An L-shaped attachment member 277 is provided at the upper end of the measurement element shaft 276, and a measurement element 280 is fixed to the upper part of the attachment member 277. The tip of the probe 280 coincides with the rotational axis of the probe shaft 276, and the tip of the probe 280 is inserted into the rim groove of the spectacle frame F at the time of measurement.

  A limiting member 281 is attached to the lower end of the tracing stylus shaft 276. The limiting member 281 has a substantially cylindrical shape, and a convex portion 281a is formed on the side surface along the vertical direction. Further, a convex portion 281a is also formed in the direction opposite to the paper surface in FIG. These two convex portions 281a are brought into contact with the notch surface 265a of the vertical support base 265 (the same notch surface 265a is also on the opposite side of the paper surface in FIG. 6), so that the rotation of the tracing stylus shaft 276 (that is, The rotation of the probe 280 is limited within a certain range. Further, an obliquely cut slope is formed below the limiting member 281. When the restriction member 281 is lowered together with the tracing stylus shaft 276 by the vertical movement of the vertical support base 265, the slope is brought into contact with the slope of the block 263 fixed to the lateral movement support base 260. The rotation of 281 is guided to the state of FIG. 6, and the direction of the tip of the measuring element 280 is corrected to the moving direction of the lateral movement support base 260.

  In the case of a high curve frame, it is necessary to increase the uppermost point at which the probe 280 is moved up and down. In this case, the length of the probe shaft 276 is increased, and the Z moving mechanism 260A is The distance of the guide rail receiver 266 is also increased.

  Here, at the time of both frame tracing, in order to enable measurement of a type of frame in which the high curve frame and the bridge are greatly protruded to the front side, the following configuration is made. 2 and 3, when the measurement unit 240 (measuring element 280) is moved from the right rim FR to the left rim FL (or from the left rim FL to the right rim FR), the first slider 202 has a right rim. A passage 300 is formed outside the FR and the left rim FL to allow the probe 280 to pass therethrough. In the present embodiment, the passage 300 is formed by a groove that is recessed inside the center portion of the first slider 202 so that the probe 280 can pass under the clamp pins 230Rb and 230Lb. The lateral width W (width in the X direction) of the passage 300 is wider than the interval W1 where the clamp pins 230Ra and 230Rb on the right rim FR side and the clamp pins 230La and 230Lb on the left rim FL side are arranged.

  Further, the width D in the front-rear direction (Y direction) of the passage 300 with respect to the surface of the first slider 202 facing the rim is such that the measuring element 280 is placed in the horizontal direction so that the measuring element 280 can be stored under the first slider 202. It is wider than the length d1. When the height h of the passage 300 from the upper surface of the lateral movement base 241 is made lower than the positions of the clamp pins 230Rb, 230Lb, the clamp mechanism 230, etc., and the probe 280 is lowered to the lowest point, A length that can be stored under one slider 202 is secured. In this embodiment, the passage 300 is provided on the first slider 202 side, but the passage 300 may be provided on the second slider 203 side.

  Next, the measurement operation of the spectacle frame measuring apparatus having the above configuration will be described with reference to the control block diagram of FIG. As shown in FIG. 2, the operator holds the spectacle frame F on the frame holding unit 200 by using four clamp pins arranged on the first slider 202 and the second slider 203. Thereafter, when a measurement start signal is input from the double-frame tracing switch 412 of the switch panel 410, the control unit 150 controls the driving of the XY moving mechanism 250A and the Z moving mechanism 260A of the measuring unit 240, so After measuring the shape of the rim FR, the shape of the left rim FL is continuously measured. When the apparatus is activated, the center of the probe 280 is positioned at the rotation center of the rotation base 250 of the measurement unit 240, and the center is initially set at a position P1 inside the right rim FR. The X direction of the position P1 coincides with the center of the clamp pin 230Ra (230Rb) of the first slider 202, and the Y direction of the position P1 coincides with the middle reference line L1. The rotation base 250 is rotated by the motor 254 so that the tip of the measuring element 280 faces the clamp pin 230Ra (230Rb). Further, the position of the measuring element 280 in the Z direction is lowered to the lowest point.

  When the measurement start signal is input, the controller 150 first drives the DC motor 272 to move the tip of the measuring element 280 to the clamp pin 230Ra side where the vertical center of the clamp pins 230Ra and 230Rb coincides, The tip of the probe 280 is inserted into the groove of the rim FR. During this movement, the drive current to the DC motor 258 is controlled, so that a measurement pressure is applied so that the rim is not deformed and the probe 280 does not come off the rim groove. The moving position of the probe 280 at the measurement start position at this time is detected by the encoder 257 and stored in the memory 161.

  Subsequently, the control unit 150 rotates the motor 254 for each predetermined number of unit rotation pulses, and rotates the probe holding unit 255 together with the rotation base 250. By this rotation, the probe 280 is moved along the groove of the rim. At this time, the amount of movement of the lateral movement support base 260 moved in the radial direction is detected by the encoder 257. The amount of movement of the vertical support base 265 moved in the Z direction is detected by the encoder 270. Then, the rotation base 250 is rotated once, and the three-dimensional shape (rn, rn, FR) of the right rim FR is calculated from the rotation angle θ of the motor 254 during one rotation, the detection amount r by the encoder 257, and the detection amount z by the encoder 270. θn, zn) (n = 1, 2,... N) is measured. The measurement data is stored in the memory 161.

  After the measurement of the right rim FR is completed, the control unit 150 drives the motor 258 to disengage the measuring element 280 from the groove of the rim FR and return it to the initial position P1 of the right rim FR. Subsequently, the controller 150 drives the motor 272 to lower the probe 280 to the lowest point. Here, in the case of both frame traces, in order to measure the left rim FL, the probe 280 is moved to the initial position P4 (see FIG. 2) defined in the left rim FL together with the lateral movement base 241 by the left / right moving mechanism 240A. Is done. However, when the measuring element 280 is directly moved from the position P1 to the position P4, the measuring element 280 interferes with a type of frame in which the high curve frame and the bridge are greatly protruded to the front side. In order to avoid this, the controller 150 moves the probe 280 as follows.

  The control unit 150 drives the motor 258 to move the lateral movement support base 260 toward the first slider 202, and places the probe 280 placed at the position P1 under the clamp pin 230Rb (including the vicinity thereof). It is moved to a position P2 that passes through the passage 300 formed in the first slider 202. As shown in FIG. 9, the distance LD for moving the probe 280 from the position P1 to the position P2 is the radial distance LDa in the Y direction measured at the measurement start position of the right rim FR, and a predetermined distance LDb. And set by The distance LDb is set so that the measuring element 280 is positioned outside the side surface 202a of the first slider 202 and can be stored under the first slider 202 (that is, the measuring element 280 is disengaged outside the rims FR and FL). ), A distance obtained by adding a margin distance to the length d1 of the measuring element 280. The fact that the probe 280 has reached the position P2 is obtained from the detection information of the encoder 257. The width D in the Y direction of the passage 300 is formed by a distance at which the probe 280 does not collide with the position P2.

  In moving the measuring element 280 to the position P2, it is not necessary to return to the initial position P1 after the measurement of the right rim FR. When the measuring element 280 is removed from the groove of the right rim FR, the measuring element 280 is removed. May be controlled to lower the position to the lowest point and to pass from the position below the clamp pin 230Rb to the position P2. The moving distance for detaching the measuring element 280 from the groove of the right rim FR can be determined as a distance including a margin with reference to the rim groove having the largest depth.

  When the probe 280 reaches the position P2, the control unit 150 controls the driving of the motor 244 and moves the lateral movement base 241 in the left direction in FIG. 2 (FIG. 9) to form the first slider 202. The probe 280 is moved to the position P3 in the passage 300. The moving distance at this time is the same as the moving distance in the X direction from the position P1 to the position P4. Next, the control unit 150 controls the driving of the motor 258 to move the measuring element 280 from the position P3 to the initial position P4 of the left rim FL by passing under the clamp pin 230Lb (including the vicinity thereof). Thereafter, as in the conventional case, after the probe 280 is inserted into the groove of the clamped left rim FL of the clamp pins 230La and 230Lb, the rotation base 250 is rotated once, so that the three-dimensional shape of the left rim FL is changed. Measured.

  It should be noted that when the probe 280 passes through the passage 300, the probe 280 only needs to be substantially out of the rims FR and FL (outside the frame). If the probe 280 does not interfere with the nose side ends of the bridge B or the rims FR and FL of the spectacle frame, the case where the probe 280 is moved away from the side surface 202a of the first slider 202 is also included.

  As described above, the stylus 280 is moved in the left-right direction while avoiding the right rim FR and the left rim FL, so that the high curve frame and the type of frame in which the bridge greatly protrudes to the front side are avoided. Both frame traces are enabled.

  If both frame traces are possible, the left and right target lens shapes are determined based on the measurement results of the three-dimensional shapes of the right rim FR and the left rim FL and the movement information when the lateral movement base 241 is moved by the left / right movement mechanism 240A. Information such as the center-to-center distance (FPD), the nose side edge distance of the left and right eyeglasses, and the curvature angle of the spectacle frame is obtained by the control unit 150.

  Further, as described above, since the position of the lowest point where the probe 280 is lowered from the clamp position of the rim of the clamp pin is not changed from the conventional one, the height of the main body of the spectacle frame measuring device 2 is not increased. Just do it. For this reason, the user who owns the spectacle lens processing apparatus 1 incorporating the conventional spectacle frame measuring device 2 replaces the spectacle frame measuring device 2 or replaces the first slider 202 having the passage 300 and controls the same. By rewriting the control program provided to the unit 150, it is possible to trace both frames of the high curve frame and the type of frame in which the bridge is greatly pushed forward.

  The embodiment described above can be variously modified. When performing both-frame tracing, the entire measurement time can be shortened by making it possible to select a path that the probe 280 moves between the left rim FL and the right rim FR according to the type of the spectacle frame F.

  For example, as shown in FIG. 10, as a path for moving the measuring element 280 from the position P1 to the position P4, a path 800 for directly moving the measuring element 280 from the position P1 to the position P4 as in the past, and a measuring element so as to avoid the bridge B. A path 801 for moving 280 obliquely via positions P5 and P6 and a path 802 for moving via positions P2 and P3 as described above are provided, and these can be selected. Which route is selected is determined by the operator by looking at the type of the frame F and is selected by the switches 413, 414, and 415 provided on the switch panel unit 410.

  When the bridge B of the frame does not protrude, the warp angle of the frame is small, and contact can be avoided even if the measuring element 280 is directly moved from the position P1 to the position P4, the operator selects the path 800. In this case, since the distance that the probe 280 is moved with respect to the path 801 and the path 802 is short, the measurement time is shortened accordingly.

  The bridge B of the frame protrudes, but in the case of a type of frame with a small frame warp angle, the measuring element 280 interferes with the bridge B but does not interfere with the spectacle frame F. In this case, it is only necessary to avoid interference with the bridge B, so the operator selects the path 801. When the path 801 is selected, the control unit 150 controls the driving of the motor 244 to move the lateral movement base 241 in the left direction and simultaneously moves the lateral movement support base 260 in the Y direction on the first slider 2 side. And move the probe 280 to the position P5. Thereafter, the position of the lateral movement support base 260 is left as it is, only the lateral movement base 241 is moved, the measuring element 280 is moved to the position P6, and then the lateral movement support base 260 is moved away from the first slider 2. By doing so, the probe 280 is moved to the position P4. In the selection of the route 801, since the moving distance is shorter than that of the route 802, the measurement time is shortened accordingly. Since the route 802 has been described above, the description thereof is omitted.

It is an external appearance block diagram of the spectacle lens processing apparatus incorporating a spectacle frame measuring apparatus. It is the top view which looked at the frame holding unit from the top. It is a figure which shows the principal part of the AA cross section of FIG. It is a block diagram of the clamp mechanism of a clamp pin. It is the top view which looked at the measurement unit and the left-right movement mechanism from the top. It is a side view of a probe holding unit. It is the figure which looked at the measuring element holding | maintenance unit of FIG. 6 from the C direction. It is a control block diagram of a spectacle lens processing apparatus. It is explanatory drawing about operation | movement of a spectacles frame measuring apparatus. It is explanatory drawing about the example of a change of operation | movement of a spectacles frame measuring apparatus.

Explanation of symbols

2 Eyeglass Frame Measuring Device 150 Control Unit 200 Frame Holding Unit 202 First Slider 203 Second Slider 230 Clamping Mechanism 240 Measuring Unit 240A Left / Right Moving Mechanism 255 Measuring Element Holding Unit 300 Path 410 Switch Panel

Claims (4)

It has clamp pins that clamp the right lens frame and left lens frame of the spectacle frame, respectively, and the right lens frame from the vertical direction (Y direction) when wearing the frame with respect to the left and right direction (X direction) of the right lens frame and left lens frame. Eyeglass frame holding means having a first slider and a second slider for pressing and holding the left lens frame ;
A measuring unit having a measuring element moving mechanism for moving a measuring element along the groove of the lens frame, and an XY moving mechanism for moving the measuring element in the radial direction (XY direction) of the lens frame and the radial direction of the lens frame A measuring unit that has a Z moving mechanism that moves the measuring element in a vertical direction (Z direction) perpendicular to Z, and that detects the movement of the measuring element to obtain a three-dimensional shape of the lens frame;
A left-right movement mechanism for moving the measurement unit in the left-right direction when tracing both frames;
In a spectacle frame shape measuring apparatus comprising:
A path formed in the first or second slider so that the measuring element can pass when the measuring unit is moved left and right during both-frame tracing , and the Z moving mechanism moves the measuring element. A passage formed below the clamp pin in the vertical direction ;
After the measurement of one lens frame is completed, the measuring element moving mechanism and the left / right moving mechanism are controlled, the measuring element is moved to the passage formed in the first or second slider, and the other lens frame is measured. Control means for moving the measuring element to a predetermined initial position;
An eyeglass frame shape measuring apparatus comprising: In the spectacle frame shape measuring apparatus according to claim 1,
The control means controls the Z moving mechanism after the measurement of one lens frame is completed to move the measuring element below the clamp pin, and then controls the XY moving mechanism to lower the clamp pin. To move the probe to the path, and then actuate the left-right movement mechanism to move the probe to the other lens frame side, and then move the XY movement mechanism. The spectacle frame shape measuring apparatus, wherein the measuring element is moved to the initial position of the other lens frame by controlling the position below the clamp pin . 3. The spectacle frame shape measuring apparatus according to claim 2, wherein the control means measures the position of the lens frame at a position where the measuring element is moved to the passage by passing under the clamp pin after the measurement of one lens frame is completed. A spectacle frame shape measuring apparatus, which is set based on a result. The spectacle frame shape measuring apparatus according to any one of claims 1 to 3 , wherein when the measuring element is moved to the initial measurement position of the other lens frame after the measurement of one lens frame is completed, the measuring element is passed through the passage. Selecting means for selecting a first path to be moved and a second path to move the probe without passing through the path;
When the second path is selected, the control means controls the left / right movement mechanism after the measurement of one lens frame is completed, and passes under the left and right lens frames to the initial position of the other lens frame. A spectacle frame shape measuring apparatus characterized by directly moving a measuring element.