KR20080076163A - Tracer for correctly reading groove position of the spectacle - Google Patents

Abstract

A tracer for reading a groove of a glass frame is provided to automatically measure the shape of the glass frame regardless of the position of the groove of the glass frame. A tracer includes a stylus, a mechanism unit(20), an electronic circuit unit(60), a processing unit(70) and a display unit(80). The stylus comes in contact with a groove of a glass frame. The mechanism unit rotates the stylus at 360 degrees, vertically and horizontally moves the stylus, and detects a vertical position, a horizontal position, and a rotation angle of the stylus. The electronic circuit unit controls the operation of the mechanism unit. The processing unit generates a predetermined control signal to the electronic circuit unit to control the operation of the mechanism unit according to the detection result of distances in the horizontal and vertical directions and the rotation angle of the mechanism unit. The display unit displays the shape of the glass frame obtained from the result of the mechanism unit throgh an image.

Description

Eyeglass frame shape measurer with eyeglass frame groove reading function {Tracer for correctly reading groove position of the spectacle}

1 is a block diagram schematically illustrating a spectacle frame shape measuring device according to the present invention.

Figure 2a is a perspective view schematically showing the appearance of the spectacle frame shape measuring device according to an embodiment of the present invention.

Figure 2b and Figure 2c is a perspective view and a cross-sectional view of the mechanism of the spectacle frame shape measuring device according to an embodiment of the present invention.

Figure 3 is a schematic diagram for explaining the operation of the spectacle frame groove reading of the spectacle frame shape measuring device according to an embodiment of the present invention.

Figure 4 is a flow chart showing the eyeglass frame home reading operation of the spectacle frame shape measuring device according to an embodiment of the present invention.

The present invention relates to a spectacle frame shape measuring device, and more particularly, to a spectacle frame shape measuring device that can accurately read the position of the groove of the spectacle frame.

As a device for processing a blank lens for a spectacle frame, a patternless lens processing machine for processing a spectacle blank lens without a pattern has recently been used. The patternless lens processing machine is a device that calculates data on the spectacle frame shape obtained from a spectacle frame shaper with a data calculation processing device, and processes the blank lens in the same manner as the spectacle frame shape using the arithmetic processing data.

The spectacle frame shape measuring device is a gripper for fixing the spectacle frame and a stylus that is free to move horizontally and vertically while rotating 360 degrees along the spectacle frame and contacting the inner groove of the spectacle frame fixed to the gripper, and the distance displacement according to the rotation angle of the stylus. Including an encoder for measuring (horizontal and vertical distance), data relating to the shape of the spectacle frame is calculated.

On the other hand, the conventional spectacle frame shape measuring device when the spectacle frame is gripped by a pair of gripper arms that are formed to protrude into the gripper, more specifically, the gripper, the center of the pair of gripper arms (that is, the middle part of the spectacle frame) Assuming that a groove is formed, it is designed to read eyeglass frame shape data by placing a stylus in the portion. The above-described conventional spectacle frame shape measuring device works well in spectacle frames (for example, plastic spectacle frames) having thin and long grooves.

However, according to the design type of the spectacle frame, the groove position may be formed to be biased on either side of the spectacle frame instead of the center portion of the spectacle frame thickness. For example, when the frame is produced by joining another main body with a groove into which the lens fits on the frame forming the frame of the frame (glass frame having a double groove), the shape of the frame is measured using a conventional frame shape measuring instrument. You will not be able to. That is, in the double frame of the spectacle frame, the part of the spectacle frame (1/2 point) that the stylus initially contacts is not the spectacle frame groove, so when the reading is attempted from this point, the spectacle frame is off the track. If the track is off, the spectacle frame shaper may retry the read operation or display a read operation failure message to inform the user. In the manual mode, the user checks the position of the eyeglass frame groove with his eyes and manually positions the stylus directly on the eyeglass frame groove. However, because the thickness of the frame is thin, it is difficult to visually check the home position of the eyeglass frame held by the gripper, and picking the stylus by hand and placing it in the home position is quite annoying for the user.

On the other hand, the lens processing machine is a device that pursues automation and convenience, and its additional device, an eyeglass frame shape measuring device, also seeks precision and automation of measurement, and the user of the lens processing machine fixes the eyeglass frame to the eyeglass frame shape measuring device and presses the operation button. When pressed, the lens processing machine receives the spectacle frame shape data output from the spectacle frame shape measuring device, and seeks to automatically process the blank lens in association with the spectacle frame shape data. However, when the eyeglass frame groove is not formed at the center of the thickness of the eyeglass frame as in the above-described double groove eyeglass frame and is removed to one side, the stylus cannot be positioned at the position of the eyeglass frame groove by the existing method or the simple method. It is difficult to automate the measurement of the shape of the spectacle frame, so automatic processing of the lens is not achieved.

Accordingly, an object of the present invention is to provide a spectacle frame shape measuring device that can accurately find the position of the spectacle frame groove mounted on the gripper. Still another object of the present invention is to provide a spectacle frame shape measuring device capable of measuring the spectacle frame shape regardless of the formation position of the groove of the spectacle frame. Still another object of the present invention is to provide a spectacle frame shape measuring device for automatically measuring the spectacle frame shape.

In order to achieve the above object, the spectacle frame shape measuring device according to the present invention, a gripper for mounting / fixing the spectacle frame; A stylus contacting the inner side of the spectacle frame fixed to the gripper; A first shaft motor for moving the stylus in a vertical direction; Position detecting means for detecting a position in the vertical direction of the stylus; a second shaft motor for moving the stylus in a horizontal direction; An electronic circuit unit configured to control the driving voltage of the first shaft motor and the driving voltage of the second shaft motor to adjust the vertical movement and the horizontal movement of the stylus, and the stylus is in contact with a predetermined position of the spectacle frame. In the state until the position information of the up-down direction of the stylus determined according to the increase or decrease of the driving voltage of the first shaft motor converges to the position information of the predetermined contact position, the first corresponding to the result of the position detecting means And a processing portion for generating a signal for controlling the driving voltage of the shaft motor and the driving voltage of the second shaft motor to the electronic circuit portion, so that the stylus is accurately contacted with the inner groove of the spectacle frame.

And, the processing unit, the position information in the vertical direction of the stylus generated when the force applied to the stylus in the up or down direction by increasing or decreasing the first axis motor driving voltage in a state in which the stylus is in contact with a predetermined position of the spectacle frame And determining whether a difference between the position information of the stylus in the up-down direction at the predetermined position occurs. In the first process, when it is found that there is no difference in the positional information of the stylus in the up and down direction, the stylus is separated / retracted horizontally from the predetermined contact position, moved to the upper or lower direction, and then contacted to the spectacle frame again. And a second process of checking whether the stylus converges to the predetermined contact position when a force is applied to the stylus up or down by the increase or decrease of the first shaft motor driving voltage at the moved contact position. ; In the second process, when the position information in the vertical direction of the moved contact position received from the position detecting means converges to the contact position of the first process, the contact position of the first process is determined as the eyeglass frame home position, A third step of performing an eyeglass frame reading operation; And generating a signal to control the power voltage of the second shaft motor to the electronic circuit unit when a difference in position information in the up and down direction occurs in the first process or convergence of the contact position does not occur in the second process. After the stylus is separated / retracted in the horizontal direction from the contact position of the first process or from the moving contact position of the second process, the first process is performed while changing the driving voltage of the first shaft motor to change the eyeglass frame contact position. And a recording medium on which a program for performing the fourth process of repeating the second process is recorded.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2a to 2c, the spectacle frame shape measuring device according to the present invention, the stylus (22 of FIG. 2b), the stylus (22 of FIG. 2b) in contact with the groove (not shown) of the eyeglass frame 360 The mechanism unit 20 which rotates and also moves in the vertical direction and the horizontal direction and detects the position (distance displacement), the position in the horizontal direction (distance displacement), the rotation angle, and the like of the stylus (22 in FIG. 2B). According to the detection result of the electronic circuit part 60 which controls the operation of the said mechanism part 20, the vertical direction of the said mechanism part 20, the distance of a horizontal direction, and a rotation angle, predetermined operation | movement of the said mechanism part 20 is controlled. A processing unit 70 for generating a control signal to the electronic circuit unit 60 and a display unit 80 for imaging and displaying the shape of the spectacle frame obtained from the result of the mechanical unit 20.

Referring to FIGS. 2A to 2C, the mechanism part 20 is a gripper 24 for mounting and fixing an eyeglass frame, and a stylus 22 contacting a groove inside the eyeglass frame fixed to the gripper 24 to rotate along the eyeglass frame groove. Means for moving the stylus 22 in the horizontal direction and measuring the distance displacement in the horizontal direction, means for moving the stylus 22 in the vertical direction and measuring the distance displacement in the vertical direction and the stylus 22. ) Means for rotating. More specifically, the gripper 24 is provided with a gripper arm 25 for protruding and fixing the spectacle frame. The stylus 22 is composed of a stylus tip 22a contacting the inner side of the spectacle frame fixed to the gripper arm 25 and a stylus fixing bar 22b to which the stylus tip 22a is fixedly mounted.

The means for measuring the distance displacement in the vertical direction by moving the stylus 22 in the vertical direction, the first shaft motor 32 for providing power to the power of the first shaft motor 32, the stylus fixing bar ( 22b) and the rod 33 and the stylus fixing bar 22b for converting the rotational motion by the first shaft motor 32 into a linear motion in the vertical direction to move in the vertical direction. (22b) is fitted to the linear motion device 36, the distance displacement measuring sensor 38 as the vertical position measuring means fixed to one side of the linear motion device 36, fixed to the stylus fixing bar (22b). A plurality of slots 39a are coupled to each other and include slot plates 39 that move together when the stylus fixing bar 22b moves up and down. Here, the slot formed in the slot plate is located inside the distance displacement measuring sensor 38.

Means for moving the stylus 22 in the horizontal direction and measuring the position in the horizontal direction include the use of the second axis motor 42, the linear motion device 36, which provides power for the horizontal movement of the stylus 22. A stylus transfer block 37 fixedly coupled to the other side is connected between the second motor 42 and the stylus transfer block 37 to transfer power of the second shaft motor 42 to the stylus transfer block 37. And a link connector 44 and the stylus 22 for moving the stylus feed block 37 in the horizontal direction by converting the rotational motion by the second shaft motor 42 into a linear linear motion in the horizontal direction. And an encoder 46 as a means for detecting the position in the horizontal direction. Therefore, when the stylus transfer block 37 moves in the horizontal direction, the stylus fixing bar 223b fixed to the stylus transfer block 37 also moves horizontally. Since the first shaft motor 32 and the stylus 22 are fixed to the feed block 37, the stylus 22 is moved horizontally by the second shaft motor 42 and at the same time the first shaft motor 32 is fixed. ) Will move in the vertical direction.

The means for rotating the stylus 22 by 360 degrees while the stylus tip 22a is in contact with the eyeglass frame groove includes a step plate 52 which provides power and a base plate engaged with the step motor 52. And a connecting portion 56 fixedly connected to the base plate 54 and the stylus transfer block 37.

Meanwhile, reference numeral '21', which is not described in FIGS. 2A to 2B, is a guide bar for adjusting the grippers 24 facing each other in order to fix the spectacle frame after being fitted to the gripper arm 24a. 'Indicates a portion where the electronic circuit unit 60 and the processing unit 70 of FIG. 1 are installed.

The electronic circuit unit 60 according to the present invention is configured to adjust driving voltages of the first shaft motor 32 and the second shaft motor 42 of the mechanism unit 20 under the control of the processing unit 70 to be described later. Since this is manufactured using a well-known circuit technique, it is not explained in detail in this specification.

The processing unit 60 according to the present invention includes the upper and lower portions of the stylus 22 determined according to the increase and decrease of the driving voltage of the first shaft motor 32 while the stylus 22 is in contact with a predetermined position of the spectacle frame. The driving voltage of the first shaft motor 32 and the second shaft motor 42 in response to the result of the distance displacement sensor 38 until the position information in the direction converges to the position information of the predetermined contact state. A recording medium (e.g., optical disk, magnetic disk, etc.) in which a program for generating a signal for controlling the driving voltage of the electronic circuit unit 60 is generated so that the stylus 22 is correctly contacted with the inner groove of the spectacle frame. Is made of.

That is, the stylus 22 initially contacts the recording medium of the processing unit 60 by applying a force to the stylus 22 in the up or down direction while the stylus 22 is in close contact with the inside of the spectacle frame. The process of checking whether the vehicle is dislocated from the vertical position, and using the characteristics of the 'V' groove of the spectacle frame, the stylus 22 is separated / retracted horizontally from the contact position and moved upward or downward a predetermined distance. A program including checking whether the stylus 22 converges to the initial contact position when it is brought into close contact with the spectacle frame and the force is applied to the stylus 22 in the up or down direction in close contact. It is. Whether the above-described stylus deviates from the initially contacted position and whether the stylus converges to the initial contact position is confirmed from the output of the distance displacement measuring sensor 38 which is a position detecting means in the vertical direction.

More specifically, a first process of contacting the stylus 22 to a predetermined position inside the spectacle frame by operating the second shaft motor 42 on a recording medium (not shown) of the processing unit 60; After the first process, a signal for controlling the driving voltage of the first shaft motor 32 is transmitted to the electronic circuit unit 60 to move the stylus 22 upward or downward from the contact position of the first process. And receiving the positional information in the up-down direction of the stylus 22 from the distance displacement measuring sensor 38, and calculating the difference from the positional information in the up-down direction of the contact position of the first process. In the second process of preliminarily determining whether the contact position is the eyeglass frame home position, and when the contact position of the first process is preliminarily determined as the eyeglass frame home position in the second process, the stylus 22 is removed from the inner contact of the eyeglass frame. The stylus 22 is further moved upward or downward, the stylus 22 is brought into contact with the inside of the spectacle frame again, and the driving voltage of the first shaft motor 32 is controlled to control the stylus 22. It moves up or down at the moved contact position, receives the position information at the upper or lower movement position of the contact position moved from the distance displacement measuring sensor 38, and up and down received from the distance displacement measuring sensor 38 A third step of checking whether the positional information of the direction converges to the contact position information of the first process, and the up-down position obtained from the distance displacement measuring sensor 38 in the third process is the contact position of the first process. When it is confirmed that the convergence is determined, the fourth process of determining the contact position of the first process as the eyeglass frame home position and performing the eyeglass frame reading operation, and the second lesson When the contact position of the first process is not determined as the eyeglass frame home position in the positive or third process, the driving voltage control signal of the second shaft motor 42 is generated to turn the stylus 22 into the contact position of the first process. The fifth process of repeating the first to the third process while changing the contact position of the spectacle frame by changing (increasing or decreasing) the driving voltage of the first shaft motor 32 after deviating / retracting in the horizontal direction The program to perform is recorded.

Referring now to Figures 3 and 4 will be described in detail the principle of the eyeglass frame groove reading and the groove reading process using the spectacle frame shape measuring apparatus according to the present invention.

In the currently used spectacle frame shape measuring device, the gripper 24a and 24b is moved along the guide bar (21a of FIG. 2A) connected to the gripper (24a and 24b of FIG. 2A) to firmly fix the spectacle frame to the gripper arm 25. And the stylus tip 22a is designed to contact the center part of the thickness of the spectacle frame. That is, the spectacle frame shape measurement is performed under the premise that the spectacle frame groove is formed in the middle of the thickness of the spectacle frame, and no separate operation for finding the spectacle frame groove is performed. On the contrary, in the present invention, after the stylus tip 22a is first contacted inside the thickness of the spectacle frame, the spectacle frame groove reading process is performed without performing the spectacle frame reading process, and then the spectacle frame-shaped reading process is performed.

In the present invention, the spectacle frame groove is generally 'V' shaped, and even when the stylus tip 22a in contact with the groove is moved upward or downward, it uses the property of converging to the first contacted position by the structure of the groove. That is, when the stylus tip (22a) is moved in the upper or lower direction in contact with the inside of the eyeglass frame, it is free to move, to confirm that there is a position of the eyeglass frame groove at the point where there is no change of position by position convergence in the vertical direction will be.

Fig. 3 shows a case in which the other main body having the groove 37a for fitting the lens on the frame main body forming the frame of the eyeglass frame is bonded to each other (glass frame having a double groove). Since both the 37a and the eyeglass frame groove 37b exist, the processing part 70 of the present invention includes an algorithm for distinguishing between the small groove 37a and the eyeglass groove 37b.

As shown in FIG. 3, the stylus tip 22a initially moves to the 'A' position, which is expected to be the eyeglass frame home position, in contact with the eyeglass frame 35. Here, the position 'A' means any part of the thickness of the spectacle frame, and as an example, 3 represents the middle part (half point of the thickness of the spectacle frame). If the 'V' shaped eyeglass frame groove is formed in the 'A' position, there will be no vertical position change even if the stylus tip 22a is moved up or down.

However, since the eyeglass frame groove is not formed at the 'A' position, when the stylus tip 22a moves up and down in contact with the eyeglass frame 35 at the 'A' position, the stylus tip 22a moves toward the inner side of the eyeglass frame 35. Thus it moves along the direction in which the force acts. When the stylus tip 22a moves downward, the stylus tip 22a moves toward the 'C', so that the initial position 'A' is not a circular frame groove. The stylus tip 22a is retracted from the spectacle frame 35 and then retracted to return to the original position 'A'. Then, the stylus tip 22a is moved upward or downward by a certain distance, and the stylus tip 22a is brought into contact with another part of the spectacle frame 35 again. The stylus is moved upward and downward in contact with the new position, and the operation of checking whether the stylus is changed is repeated.

If the stylus tip 22a moves in the upper or lower direction while being in contact with the 'B' position while repeating the above-described process, since the small groove 37a is formed in the 'B', the stylus tip 22a The change in the position of the up and down direction is not detected. On the other hand, the eyeglass frame shape measuring apparatus of the present invention handles because it is a frame having a double groove, in this case 'B' position is not the eyeglass frame home position, so do not directly determine the 'B' position as the eyeglass frame home position, secondary Perform the 'home position check' operation described below.

After leaving / retracting the stylus tip 22a at the 'B' position, returning to the initial position 'A', and then adjusting the driving voltage of the first shaft motor 32 to adjust the driving voltage of the upper and / or 'B' positions. After moving the stylus to the lower position 'contact with the eyeglass frame 37 inside again. Then, the driving voltage of the first shaft motor 32 is adjusted to apply a force to the stylus tip 22a in the up and down direction to see whether the stylus tip 22a converges to the 'B' position. When the stylus tip 22a receives the force from the upper portion 'D-2' portion of the 'B' position, the stylus tip 22a moves to the 'D' position. In addition, the stylus tip 22a moves toward the 'C' position at the 'A' below the 'B' position. That is, since it does not converge to the original position 'B' position, it is determined that the 'B' position is not the home position.

Meanwhile, the stylus tip 22a contacts the 'D' position while the stylus tip 22a is moved in the upper or lower direction while the stylus tip 22a is in contact with the inside of the spectacle frame 35 and the position change in the vertical direction is repeated. Will be. The eyeglass frame groove 37b is formed at the 'D' position. Therefore, if the stylus tip 22a is brought into contact with the 'D' position and moved in the vertical direction, the position information in the vertical direction is converged to the 'D' position by the 'V' structure of the groove 37b so that the position change is not detected. do. Next, the aforementioned 'home positioning operation' is performed. That is, after the stylus tip 22a is removed / retracted from the spectacle frame 35 at the 'D' position and returned to the 'A' position, the upper portion of the 'D' position (for example, the 'D-1' position) And the lower part (for example, 'D-2' after a predetermined distance and then contact with the moving position inside the spectacle frame 37. And when applying a force in the vertical direction to the stylus tip 22a in the contact state, the stylus Note that the tip 22a converges to the 'D' position When the stylus tip 22a is subjected to an upward and downward force at the 'D-1' position above the 'D' position, the stylus tip 22a is moved to the 'D' position. Position and if the stylus tip 22a is forced up and down in the 'D-2' position under the 'D' position, the stylus tip 22a moves toward the 'D' position. That is, it converges to the 'D' position, which is the original position, so the final determination of the 'D' position as the home position and the reading process The.

Meanwhile, the eyeglass frame reading process is a known technique, and rotates the stylus 22 or the stylus tip 22a 360 degrees along the eyeglass frame groove while maintaining contact with the eyeglass frame groove. The distance R in the horizontal direction between the stylus 22 and the eyeglass frame groove D and the distance displacement Z in the vertical direction at each time point of the rotation, for example, 360 degrees divided by 1440. ) Is detected by the distance displacement detection sensor 38 and the encoder 46, respectively.

Here, the vertical movement of the stylus tip 22a is achieved by adjusting the driving voltage of the first shaft motor 32, and the horizontal square movement (departure / retraction) of the stylus tip 22a is performed by the second shaft motor 42. Is achieved by adjusting the driving voltage.

Referring to FIG. 4, the glasses frame reading process will be described in more detail.

When the eyeglass frame reading operation button (not shown) is pressed in the spectacle frame shape measuring device, the first shaft motor 32 and the second shaft motor 42 operate under the control of the processing unit 70 and the electronic circuit unit 60 to operate the stylus 22. ) Is moved up and down and in the horizontal direction to contact the inner side of the spectacle frame (35 in Figure 3), this process is a process that is generally performed in the conventional spectacle frame shape measuring device (S1). Meanwhile, the driving voltage of the first shaft motor 32 used in the process S1 is referred to as 'reference voltage Vref', and the portion where the stylus tip 22a contacts is referred to as an 'initial position' or 'reference position Vpo'. The reference position Vpo is typically one half of the thickness of the spectacle frame.

After the process S1, in a state in which the stylus tip 22a is in contact with the reference position, a control signal is generated to increase or decrease the reference voltage Vref by ΔV to the electronic circuit unit 60 (S2). If the groove is not formed at the reference position, if the driving voltage of the first shaft motor 32 is increased or decreased, the position of the stylus tip 22a in the vertical direction is changed.

Next, the processing unit 70 receives the vertical position information of the stylus tip 22a obtained in the step S2 and the reference position information of the step S1 from the distance displacement measuring sensor 38 and calculates a difference between the information. (S3).

As a result of the calculation, when the difference between the reference position information and the position information in the up and down direction of the stylus tip 22a in step S2 appears (S4), a driving voltage control signal of the second shaft motor 42 is generated to generate the stylus ( 22) is separated from the spectacle frame 35 and retracted a predetermined distance in the horizontal direction and then returned to the reference position. Next, by controlling to change the driving voltage of the first shaft motor 32, for example, Vref + Vm, or Vref-Vm (where Vm is the driving voltage increase or decrease amount for changing the contact position, processing unit ( 70) can be set in consideration of the thickness of the spectacle frame and the number of contact positions, etc.), so that the stylus tip 22a is moved toward the upper gripper 24a or the lower gripper 24b. To move (S5). In this case, the changed driving voltage is referred to as a 'variable voltage', and the contact position of the spectacle frame is changed by the variable voltage.

After the process S5, the processes S1 to S4 are repeated, while the variable voltage of the first shaft motor 32 of the S4 process is constantly increased or decreased. In the iterative process, the part of the eyeglass frame that the stylus tip 22a contacts in step S1 becomes a 'moving contact position', and in steps S2 to S4, the 'reference position' is replaced with a 'moving contact position' and the 'reference voltage' Is replaced by 'variable voltage'.

On the other hand, as a result of the calculation by the step S3, the difference between the reference position information or the moving contact position information and the position information in the vertical direction of the stylus tip 22a according to the increase or decrease of the reference voltage or the variable voltage of the S2 process If not, the preliminary presumed that the eyeglass frame groove is formed at the reference position or the corresponding mobile contact position, and performs a 'home positioning process'.

First, the processing unit 70 generates a signal for controlling the driving voltage of the second shaft motor 42 to separate the stylus 22 from the spectacle frame 37 and retreat a predetermined distance in the horizontal direction to a reference position. Return Next, the stylus 22 is moved upward or downward from the reference position or the corresponding moving contact position by controlling the driving voltage of the first shaft motor 32 to be greater or smaller than the reference voltage or the variable voltage. Then, the second shaft motor 42 is operated to allow the stylus 22 to contact the inside of the spectacle frame (S6).

And after the process S6 generates a control signal for increasing or decreasing the corresponding drive voltage of the first shaft motor 32 by ΔV through the electronic circuit unit 60 in the contact state with the stylus tip 22a, the stylus tip 22a is moved to an up-down direction (S7). In addition, the vertical position information of the stylus tip 22a according to the increase or decrease of the corresponding driving voltage of the first shaft motor 32 is received from the distance displacement measurement sensor 38, and the vertical position information in the process S7 is the reference position or the corresponding movement. Check whether the information converges to the contact position (S8).

In step S8, when it is confirmed that the contact point of step S6 converges to the reference position or the corresponding moving contact position, the reference position or the corresponding moving contact position is determined as the eyeglass frame groove forming position, and the eyeglass frame reading operation is started ( S9).

On the other hand, in step S8, if it is confirmed that the contact position of the S6 process does not converge to the contact position of the process S1, the process proceeds to S5.

As described above, the spectacle frame shape measuring device according to the present invention, regardless of the type of the spectacle frame classified by the groove forming type is mounted on the tracer, pressing the eyeglass frame shape measurement operation button, the spectacle frame shape measuring device is a true groove Find and output the eyeglass frame shape information along the groove to the lens processor. Therefore, when reading the spectacle frame, it is possible to realize the real automation of the spectacle frame shaper and the lens processing machine by changing the user's perception that the concept of manual is sometimes entered, and also to increase the product reliability of the spectacle frame shaper.

Claims (4)

Grippers for Mounting / Fixing Eyeglass Frames A stylus contacting the inner side of the spectacle frame fixed to the gripper, A first shaft motor for moving the stylus in a vertical direction; Position detecting means for detecting a position in the vertical direction of the stylus; A second shaft motor for moving the stylus in a horizontal direction, An electronic circuit unit for controlling the driving voltage of the first shaft motor and the driving voltage of the second shaft motor to adjust the vertical movement and the horizontal movement of the stylus; In the state where the stylus is in contact with the predetermined position of the spectacle frame until the position information of the up-down direction of the stylus determined according to the increase or decrease of the driving voltage of the first shaft motor converges to the position information of the predetermined contact state. In response to the result of the position detecting means, generating a signal for controlling the driving voltage of the first shaft motor and the driving voltage of the second shaft motor to the electronic circuit unit, so that the stylus is correctly contacted with the inner groove of the spectacle frame. That includes a processing unit for the spectacle frame shape measurer. The method of claim 1, wherein the processing unit, When the stylus is in contact with a predetermined position of the spectacle frame, the position information in the up and down direction of the stylus generated when the force is applied upward or downward by the increase or decrease of the first shaft motor driving voltage and the predetermined position A first process of determining whether a difference between the position information of the stylus in the up and down directions occurs; In the first process, when it is found that there is no difference in the position information of the stylus in the up and down direction, the stylus is separated / retracted horizontally from the predetermined contact position and moved to the upper or lower direction and then contacted to the eyeglass frame again And a second process of checking whether the stylus converges to the predetermined contact position when a force is applied to the stylus up or down by the increase or decrease of the first shaft motor driving voltage at the moved contact position. , In the second process, when the position information in the vertical direction of the moved contact position received from the position detecting means converges to the contact position of the first process, the contact position of the first process is determined as the eyeglass frame home position, A third process of performing an eyeglass frame reading operation, and When the difference in the positional information in the up-down direction occurs in the first process or the convergence of the contact position does not occur in the second process, generating a signal to control the power voltage of the second shaft motor to the electronic circuit unit After the stylus is separated / retracted in the horizontal direction from the contact position of the first process or from the moving contact position of the second process, the first process is performed while changing the drive voltage of the first shaft motor to change the contact position of the eyeglass frame. And a recording medium on which a program for performing a fourth process of repeating the second process is recorded. 3. The method of claim 2, wherein the first process comprises: operating the second shaft motor to contact the stylus with a predetermined position inside the spectacle frame; (B) generating a signal for increasing or decreasing the power voltage of the first shaft motor after the step (a) to move the stylus up or down at the contact point of the step (a), (C) calculating the difference between the up-down position information of the stylus of step (b) and the up-down contact position information of the stylus of step (a) from the position detecting means, and calculating the difference between these information; If the difference in the position information in the up and down direction does not occur in the step (c), the step of preliminarily determining the contact position as the eyeglass frame groove forming position (d), eyeglass frame shape measuring device. The method of claim 2, wherein the second process comprises: After the first process, when it is found that there is no difference in the position information of the stylus in the vertical direction, a driving voltage control signal of the second shaft motor is generated to move the stylus from the contact position of the first process in the horizontal direction. (E) the process of leaving / retreating to After the process (e), after generating a signal for changing the drive voltage of the first shaft motor for changing the contact position to the electrical circuit portion to move the stylus up or down from the contact position of the first process, (F) contacting the stylus with a position different from the contact position of the first process by operating the second shaft motor; and In the state where the stylus is in contact with another contact position inside the spectacle frame, the drive voltage of the first shaft motor 32 is increased or decreased through the electronic circuit unit to move the stylus in the up and down direction, and through the position detecting means, the process f (G) confirming whether the contact position inside the spectacle frame converges to the contact position of the first process.

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