KR20050029111A - Cutting device and cutting method - Google Patents

Abstract

A cutting device and a cutting method are provided to start a predicted cut position detection or a parallel table moving operation before a cutting unit reaches a top point of a vertical motion, thereby carrying out the detection or the moving operation concurrently with a cutting operation, consequently time can be minimized. When a disk-type cam(15) is rotated at 180 degrees, a cutting blade(23) reaches the lowest point while cutting a ceramic laminate block(30). If a cutting unit driving motor(9) is rotated, the cutting blade(23) is changed into a rise state from a drop state. When an end of the cutting blade(23) is taken out of the ceramic laminate block(30), a trigger signal generator transmits a trigger signal to an image processor. If the image processor receives the trigger signal, both sections of the ceramic laminate block(30) are photographed by CCD cameras(5a,5b) while a photographed image is obtained to detect a predicted cut position. The cutting blade(23) keeps rising.

Description

Cutting device and cutting method {CUTTING DEVICE AND CUTTING METHOD}

The present invention relates to a cutting device and a cutting method.

In the manufacture of multilayer ceramic electronic parts such as multilayer ceramic capacitors, a process of printing a plurality of internal electrodes on the surface of a mother ceramic green sheet, laminating a plurality of the ceramic green sheets of the mother, and pressing them in close contact with each other, the unfired ceramic A press molding step of forming a laminated block, a cutting step of cutting each laminated ceramic chip by cutting the ceramic laminated block in accordance with the arrangement of the internal electrodes, a step of firing the cut laminated ceramic chip, and an external electrode on the fired laminated ceramic chip. The step of forming a film is performed sequentially.

On the other hand, before cutting the multilayer ceramic chip by cutting the ceramic laminated block at a predetermined position, a printing mark for cutting position determination is also printed in the process of printing a plurality of internal electrodes on the ceramic green sheet. Then, a plurality of ceramic green sheets are laminated and pressed to form a ceramic laminated block in which a positioning mark composed of a plurality of printing marks is exposed on a cross section. Subsequently, this positioning mark is picked up by a CCD camera or the like and detected to obtain position data of the positioning mark. Based on this position data, the movement distance of the table of a cutting device is calculated, a cutting position is correctly determined, and each laminated ceramic chip is cut (for example, refer patent document 1).

(Patent Document 1) Japanese Unexamined Patent Publication No. 2000-357628

By the way, the conventional cutting device performs the cutting operation by a cutting blade, the positioning mark detection operation by a CCD camera, and the movement movement of a table in series in time series. On the other hand, when transitioning from the cutting operation by the cutting blade to the positioning mark detection operation by the CCD camera, the timing at which the edge of the cutting blade during the rising out of the ceramic laminate block starts the positioning mark detection operation do.

However, the conventional cutting device does not have a configuration capable of detecting this timing, and only after confirming that the cutting blade has reached the highest point of the vertical motion, the positioning mark detection operation is started. Therefore, in the case of the transition from the cutting operation to the positioning mark detection operation, there has been a problem that a meaningless time occurs.

In addition, the conventional cutting device does not have a configuration capable of detecting the timing, and thus cannot perform a series of operations of the cutting operation, the positioning mark detection operation, and the table moving operation in order. In order to execute in order, the next cutting operation is not executed until the positioning mark detection operation and the table moving operation are completed. Therefore, the cutting operation becomes an intermittent operation and there is a problem that the processing speed cannot be increased.

Accordingly, an object of the present invention is to provide a cutting device and a cutting method which have a higher work efficiency and are capable of high-speed processing as compared with the prior art.

In order to achieve the above object, the cutting device according to the present invention

(a) a table for mounting ceramic laminated blocks,

(b) cutting means disposed above the table,

(c) a cutting drive for vertically moving the cutting means;

(d) a cutting means position detecting portion for detecting the position of the cutting means,

(e) a cut scheduled position detector for detecting a cut planned position of the ceramic laminate block;

(f) a parallel drive for relatively parallel moving the table and cutting means, and

(g) When the position of the cutting means in the rise detected by the cutting means position detection unit reaches a predetermined position between the highest point and the lowest point of the vertical motion of the cutting means, at least the detection operation of the cutting scheduled position detection unit and the parallel drive unit It is characterized by including the control part which starts any one operation | movement of a movement operation.

More specifically, the cutting drive part is provided with the cam mechanism which converts rotational motion into a vertical motion. As a result, it is easy to obtain a transition start timing from the cutting operation to the cutting scheduled position detection operation or the like, and at the same time, the cutting means can be moved up and down in a constant rhythm.

By the above structure, since the detection operation of a cutting plan position detection part, or the parallel movement operation of a parallel drive part is started before a cutting means reaches the highest point of an up-and-down motion, in the case of transition from a cutting operation to a cutting plan position detection operation etc., In that senseless time does not occur. Particularly, when the blade tip of the cutting means during ascending reaches the position coming out of the ceramic laminated block, at least one of the detection operation of the cutting scheduled position detection unit and the parallel movement operation of the parallel drive unit is started, and the blade edge is again applied to the ceramic laminated block. When the detection operation and the parallel movement operation are completed until entering, the cutting operation and other operations can be executed in parallel, and the processing speed can be further increased.

Further, in the cutting device according to the present invention, when the position of the cutting means during the falling down detected by the cutting means position detecting unit reaches a predetermined position before the cutting edge of the cutting means enters the ceramic laminated block, the control unit controls the table and the cutting means. It is characterized by checking whether the relative parallel movement of is completed, and if it is not completed, stopping the cutting drive part.

With the above configuration, it is possible to prevent breakage of the cutting device and poor cutting of the ceramic laminated block.

Further, in the cutting method according to the present invention, the cutting means moves up and down at a constant speed to cut the ceramic laminated block, and each time the cutting means is placed at a predetermined position between the highest point and the lowest point of the vertical movement of the cutting means. When it reaches | attains, the operation | movement of any one of at least the cutting plan position detection operation | movement and the relative parallel movement operation | movement of a table and a cutting means is characterized.

In addition, "cutting" includes not only the case where the ceramic laminated block is divided into two along the cutting line (full cutting), but also the case of forming the groove for the brake according to the cutting line (half cutting). do.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of the cutting device and cutting method which concern on this invention is described with reference to an accompanying drawing. In the present embodiment, a multilayer capacitor is described as an example, but needless to say, a multilayer ceramic electronic component such as a multilayer inductor, a multilayer LC composite component, a multilayer device, or a multilayer substrate may be used.

(Example)

[Schematic Configuration of Apparatus, Figs. 1 and 2]

BACKGROUND OF THE INVENTION In general, a multilayer ceramic capacitor is manufactured by press-molding a ceramic laminate block in which a plurality of ceramic green sheets having a plurality of internal electrodes provided on the surface thereof are laminated, and pressed and adhered to form an unfired ceramic laminate block. A cutting step of cutting to match the arrangement of the electrodes, cutting each laminated ceramic chip, firing the cut laminated ceramic chip, and forming an external electrode on the fired laminated ceramic chip are sequentially performed.

Here, the cutting process is performed using the cutting device 1 in which the system configuration is shown in FIG. 1 and the machine configuration is shown in FIG. The cutting device 1 includes a memory 2, a computing unit (CPU) 3, an image processing unit 4, CCD cameras 5a and 5b, a display unit (display such as a CRT) 6, a data input unit (keyboard or mouse). (7), motor control unit 8, motor for cutting means 9 and encoder 13, table parallel drive motor 10, table rotation drive motor 11, trigger signal generator 12 , The cutting blade 23, the table 21, and the like.

The memory 2 is mainly for registering data for cutting the ceramic laminated block in the cutting member. The calculation unit (CPU) 3 calculates using the data registered in the memory 2, and calculates the distance from the cutting mark to the next cut position.

The image processing unit 4 is connected to the CCD cameras 5a and 5b and the trigger signal generation unit 12, and the distance is based on the cut marks and the scheduled cutting positions captured by the CCD cameras 5a and 5b in the same field of view. Detection is performed. The detection data is transmitted to the memory 2 or the calculation unit 3.

The CCD cameras 5a and 5b are disposed to face each other so that the opposite cross sections of the ceramic laminated block 30 can be picked up. Thereby, the distortion of the rotation direction of the ceramic laminated block 30 can be calculated by the calculating part 3, and can be rotationally corrected. In particular, it is effective when the position of the laminated ceramic chip in the ceramic laminated block 30 is distorted (not parallel) due to the gap in manufacturing.

The operator inputs predetermined data by the data input unit (keyboard or mouse) 7 while viewing the screen projected on the display unit (CRT) 6.

The motor control unit 8 is connected to the motors 9, 10, 11, and drives the appropriate motors 9, 10, 11 by a command from the calculation unit 3. The motor for driving the cutting means 9 vertically moves the cutting blade 23 in the direction of the arrow K1.

The cutting blade 23 is held by a holder 22, and a force that is always pushed up by the set of cylinders 14 acts on the holder 22. The surface of the holder 22 is in close contact with the outer circumferential surface of the disc shaped cam 15. The disc cam 15 is connected to the motor 9 for cutting means and the encoder 13 via the shaft 16 attached to the position eccentrically from the center axis. The disc cam 15 converts the rotational motion of the motor 9 into a vertical motion and is sent to the holder 22. The motor 9 and the encoder 13 cooperate with each other to constantly measure the rotation angle of the disc shaped cam 15.

The encoder 13 detecting the position of the cutting blade 23 transmits the measured rotation angle data of the disc shaped cam 15 to the trigger signal generator 12. The trigger signal generator 12 transmits a trigger signal to the image processor 4 when the rotation angle of the disc shaped cam 15 reaches a preset angle. Receiving the trigger signal, the image processing unit 4 captures the cutting marks and the cutting scheduled position detecting electrodes formed on the end surface of the ceramic laminated block 30 using the CCD cameras 5a and 5b, and calculates the data. (3) to send. The table parallel drive motor 10 moves the table 21 in parallel in the direction of an arrow K2. The table rotation drive motor 11 rotates the table 21 in the direction of an arrow K3.

[Operation of Cutting Method and Cutting Device, Figs. 3 to 16]

Next, the operation | movement of the cutting device 1 is demonstrated with the cutting procedure of a ceramic laminated block. 3 is a plan view showing an example of a ceramic green sheet of a mother for producing a multilayer ceramic electronic component (in this embodiment, a multilayer ceramic capacitor). The mother green sheets 25 of the mother are printed with a plurality of internal electrodes 26 for multilayer ceramic capacitors and electrodes 28 for cutting position detection, which are cut in a later step. The electrodes 28 formed on the upper and lower ends of the green sheet 25 in FIG. 3 are intended for detecting a predetermined position when the cutting blade 22 is moved in the Y direction. In order to detect a predetermined position in the case of moving the cutting blade 22 in the X direction, the capacitor internal electrode 26 formed at the left and right ends of the green sheet 25 is used. The internal electrodes 26 are exposed at the left and right ends at their left and right ends, with their longitudinal ends cut off.

The intended cutting position detection electrode 28 has a rectangle in which the Y direction is the width direction, and the width direction is smaller than the dimension in the longitudinal direction of one internal electrode 26, and the scheduled cutting position is detected in the Y direction. The dragon electrode 28 is provided to be located between the internal electrodes 26.

In the X direction, the internal electrodes 26 formed at the left and right ends are electrodes for detecting the scheduled cutting position, but the cutting scheduled position detecting electrodes may be provided separately in the X direction.

As shown in FIG. 4, the ceramic green sheets 25 are alternately stacked and pressed while being alternately staggered in the Y direction to form ceramic multilayer blocks 30 as illustrated in FIG. 5 (upper and lower internal electrodes). The ceramic green sheet which is not formed is laminated). On the left and right end surfaces of the ceramic multilayer block 30, the capacitor internal electrodes 26 are exposed in a band state or in a state in which they are arranged side by side in the thickness direction (see the portion M1 in FIG. 5). The center line 27a in the thickness direction of the portion sandwiched by the portion M1 in which the capacitor internal electrode 26 is exposed in a band state, that is, the portion 27 in which the capacitor internal electrode 26 is not exposed. It becomes a center line of the cut planned position of this X direction. In addition, the determination method of the center line 27a uses various methods, such as a binarization method and a pattern matching method.

In the cross section just before and inside the ceramic laminated block 30, the cutting | disconnection scheduled position detection electrode 28 is exposed in the state arranged in the zigzag direction by the thickness direction (refer the part of M2 of FIG. 5). The center line 29a in the thickness direction of the non-exposed portion 29 of the cutting scheduled position detection electrodes 28 arranged in a zigzag, that is, the cutting target position detecting electrode 28, is the center line of the planned cutting position in the Y direction. Becomes The cutting scheduled position detecting electrode 28 may overlap in the thickness direction, and the cutting scheduled position detecting electrode 28 may be directly cut. The determination method of the center line 29a is the same method as the center line 27a.

The ceramic laminated block 30 to be cut is disposed on a table 21 of the cutting device 1 shown in FIG. 2 through a sheet such as paper or porous resin, and a suction device or an adhesive sheet provided on the table 21. The lower surface is fixed by. And, if necessary, the cross section of the ceramic laminated block 30 is fixed by a reference guide (not shown).

Then, when the ceramic laminated block 30 is fixed on the table 21 of the cutting device 1, in the case of performing the first cutting, the calculation unit 3 stores the data of the cutting start position registered in the memory 2. Transmits a command to the motor control section 8 based on. The motor control part 8 which received the command operates the table parallel drive motor 10 and the table rotation drive motor 11 to move the table 21 to a desired position. When the calculating part 3 receives the movement completion signal of the table 21 from the motor control part 8, it transmits a command to the image processing part 4. The image processing unit 4 picks up both opposing end surfaces of the ceramic laminated block 30 fixed on the table 21 of the cutting device 1 by the CCD camera 5a or 5b.

In addition, instead of moving the table 21, the cutting blade 23 may be moved, and both may be relatively movable.

At this time, when the ceramic green sheet 25 is thinned, the portions M1 and M2 of the capacitor internal electrode 26 and the cutting position detecting electrode 28 are exposed in a band state, and the ordinary CCD camera 5a, Imaging with 5b) is considered as one quadrangular mass as shown in FIG. 6 shows the cross section of the ceramic laminated block 30, and the area | region enclosed by the solid line A has shown the visual field of CCD camera 5a, 5b. The picked-up image including the unexposed portion 29 is displayed on the display 6.

Next, the calculating part (CPU) 3 calculates the center line 29a of the non-exposed part 29 in the position of the cutting line C based on a picked-up image. It is actually cut along this centerline 29a. In addition, the movement distance of the table 21 is calculated from the difference (position difference amount) between the data value of this centerline 29a and the data value of the cutting start position previously registered in the memory 2.

The calculating part 3 transmits a command to the motor control part 8 based on the position difference amount. The motor control part 8 which received the command operates the table parallel drive motor 10 and the table rotation drive motor 11, finely moves the table 21 to the center line of a precise cutting planned position, and performs cutting positioning correction. Do it. When the calculating part 3 receives the cutting positioning correction completion signal from the motor control part 8, it transmits a command to the motor control part 8, operates the cutting means drive motor 9, and the ceramic laminated block 30 is carried out. The first cut is made. The operation of the cutting blade 23 and the disc shaped cam 15 in that case is explained in full detail below.

When the calculating part 3 receives the first cutting completion signal from the motor control part 8, it transmits a command to the image processing part 4. As shown in FIG. The image processing unit 4 picks up both cross sections of the ceramic laminated block 30 with the CCD cameras 5a and 5b, respectively, and detects the first cut marks 31 and the next cut scheduled positions as shown in FIG. The picked-up image 29 including the cutting scheduled position 29 for the same field of view is obtained.

The calculating part 3 calculates the center line 29a of the next cutting plan position based on a picked-up image. Then, the difference between the data value of the center line 29a and the data value of the uncut side 31a of the ceramic laminated block 30 of the initial cut marks 31, that is, the next cut scheduled position from the first cut marks 31 The distance L to is calculated.

The calculating part 3 transmits a command to the motor control part 8 based on the distance L. FIG. The motor control part 8 which received the command operates the table parallel drive motor and the table rotation drive motor, and moves the next 2nd cutting plan position table 21, as shown in FIG. The distance L is already included in the position difference correction amount, and the table 21 is moved to the center line 29a of the correct cut-off position 29. When the calculating part 3 receives the movement completion signal from the motor control part 8, the cutting blade 23 performs the 2nd cutting of the ceramic laminated block 30. FIG. Cutting after 3rd is performed similarly to 2nd cutting | disconnection.

9 schematically shows a cutting method of the ceramic laminated block 30. First, in the case of 1st cutting | disconnection, the table 21 is moved to the position which the cutting planned position 29 of the position P1 enters in the visual field of CCD camera 5a, 5b. After imaging the scheduled cutting position 29 of the position P1 by the CCD cameras 5a and 5b, the amount of position difference of the ceramic laminated block 30 is calculated by image processing, and cutting is performed after position correction. .

In the second and subsequent cutting, immediately after the previous cutting, the cutting scheduled position 29 existing at the position where the next cutting should be performed is imaged by the CCD cameras 5a and 5b, and the cutting marks immediately before the image processing ( The distance L between the uncut side 31a of the ceramic laminated block 30 of 31 and the centerline 29a of the position 29 at which the next cut should be made is calculated. Thereafter, the table 21 is moved by the distance L and cut.

In this way, the cutting device 1 cuts at the cutting start position and moves the table 21 by one chip dimension every time the ceramic laminated block 30 is cut once by the cutting blade 23. When the cutting of the ceramic laminated block 30 in the Y direction is finished, the table rotation driving motor 11 is operated to rotate the table 21 every 90 times, and then the cutting in the X direction is performed in the same manner. In addition, the cutting order of a Y direction and a X direction may be reversed.

As described above, the cutting device 1 picks up the next cutting scheduled position 29 with the CCD cameras 5a and 5b every time after cutting after the second cutting, from the cutting marks 31 based on the obtained image. Since the distance L to the centerline 29a of the next scheduled cutting position 29 is determined, it is not necessary to first image all the positioning marks. That is, the distance L from the cutting mark 31 determined by the cutting device 1 to the next cutting scheduled position 29 already includes a position difference correction amount, so that the imaging of the planned cutting position 29 is 1 The circuit is good.

Also with respect to the movement of the table 21, it is only necessary to move directly by the distance L from the present position, and it is not necessary to finely move and correct the position after the movement.

In addition, the operation | movement of the cutting blade 23 and the disc shaped cam 15 in the cutting of the ceramic laminated block 30 is demonstrated with reference to FIGS.

As shown in Fig. 10, in the first cutting, the cutting blade 23 is stopped at the position of the highest point of the vertical motion. When the calculating part 3 receives the cutting positioning correction completion signal from the motor control part 8, it transmits a command to the motor control part 8, and drives the cutting means drive motor 9 to rotate. The disc cam 15 converts the rotational drive of the motor 9 into the up-and-down motion through the shaft 16 and transmits it to the holder 22. The holder 22 descends together with the cutting blade 23.

In the trigger signal generator 12, the rotation angle θ1 of the disc shaped cam 15 just before the cutting edge 23 enters the ceramic laminated block 30 is registered in advance. As shown in FIG. 11, the trigger signal generator (at a time when the rotation angle θ of the disc-shaped cam 15 transmitted from the encoder 13 coincides with the registered rotation angle θ1). The trigger signal is transmitted from the 12 to the motor controller 8.

When the motor control part 8 receives a trigger signal, it confirms that the movement operation | movement of the table 21 is completed. When the movement operation | movement of the table 21 is not completed, the cutting means drive motor 9 is paused, and it waits to complete the movement operation | movement of the table 21, and restarts it. As a result, the edge of the cutting edge 23 is not likely to enter the ceramic laminated block 30 during movement, thereby preventing the cutting device 1 from being broken or cutting the ceramic laminated block 30. can do. When the movement operation | movement of the table 21 is completed, rotation drive of the cutting means drive motor 9 is continued.

As shown in FIG. 12, when the disk cam 15 rotates 180 degrees, the cutting blade 23 reaches the lowest point, and cuts the ceramic laminated block 30. As shown in FIG. In addition, when the cutting means drive motor 9 is rotated, the cutting blade 23 changes from descending to rising.

In the trigger signal generator 12, the rotation angle θ2 of the disc shaped cam 15 immediately after the blade edge of the cutting blade 23 exits the ceramic laminated block 30 is registered in advance. And as shown in FIG. 13, when the rotation angle (theta) of the disc shaped cam 15 transmitted from the encoder 13 matches with the registered rotation angle (theta) 2, a trigger signal generation part ( The trigger signal is transmitted from the 12) to the image processing unit 4.

When the image processing unit 4 receives the trigger signal, the CCD cameras 5a and 5b respectively image both end surfaces of the ceramic laminated block 30 to detect the first cut marks 31 and the next cut scheduled positions. The picked-up image 29 containing the cutting planned position 29 (refer FIG. 7) in the same field of view is obtained. At this time, as shown in Fig. 14, the cutting blade 23 continues to rise.

The calculating part 3 calculates the distance L from the initial cutting mark 31 to the next cut position based on the picked-up image transmitted from the image processing part 4. The calculating part 3 transmits a command to the motor control part 8 based on the distance L. FIG. The motor control part 8 which received the command drives the table parallel drive motor 10 and the table rotation drive motor 11, and moves the table 21 as shown in FIG.

At this time, the cutting means drive motor 9 continues the rotation drive. And, as shown in FIG. 16, when the disc shaped cam 15 rotates 360 degrees, the cutting blade 23 returns to the original highest point. And the disk-shaped cam 15 does not stop but continues rotation further, and the cutting blade 23 changes from a rising to falling. In this manner, the cutting blade 23 basically repeats the vertical movement continuously at a constant speed, and cuts the same as the first cutting operation.

As mentioned above, since the cutting device 1 is equipped with the encoder 13 which detects the position of the cutting blade 23, and the trigger signal generation part 12 which takes the timing of the start of a cutting scheduled position detection, The time until the detection of the cutting scheduled position can be minimized. In addition, since it is possible to perform the cutting scheduled position detection operation and the table moving operation in parallel with the cutting operation (up and down movement of the cutting blade 23), the cutting operation can be continuously performed without basically stopping, A cutting device 1 capable of high speed processing can be obtained.

In addition, by adopting the disc-shaped cam 15, the timing of transition start from cutting operation to cutting scheduled position detection operation can be easily taken, and the cutting blade 23 can be vertically moved up and down by a constant rhythm. Do.

[Other Embodiments]

In addition, the cutting device and cutting method which concern on this invention are not limited to the said Example, It can change variously within the range of the summary.

The ceramic laminated block of the member to be cut may be in an unbaked state or in a sintered state. Moreover, as cutting means, pull cutting by a rotary blade etc. other than press cutting by a cutting blade may be sufficient.

In addition, the present invention, in addition to forming a ceramic laminated block by laminating and pressing a ceramic sheet, in addition to applying and drying the ceramic slurry, and then repeating the process of forming the required electrode thereon to form a ceramic laminated block and simultaneously applied It is also possible. Moreover, the correction method of a position difference is not limited to the said Example, Various correction methods are employ | adopted according to specification.

According to the present invention, since the cutting means can start the cutting position detection operation, the parallel movement operation of the table, and the like before the cutting means reaches the highest point of the vertical movement, the cutting means is scheduled to be cut in parallel with the cutting operation (vertical movement of the cutting blade). The position detection operation, the parallel movement operation of the table, and the like are performed. Therefore, in the case of the transition from the cutting operation to the cutting scheduled position detection operation or the like, no meaningless time occurs. As a result, the work efficiency can be increased as compared with the conventional one, and the high speed processing can be achieved.

1 is a system configuration diagram of a cutting device according to the present invention.

2 is a perspective view showing a main portion of a cutting device according to the present invention.

3 is a plan view illustrating an example of a ceramic green sheet for manufacturing multilayer ceramic electronic components.

FIG. 4 is a plan view illustrating a state in which the ceramic green sheets illustrated in FIG. 3 are stacked.

5 is a perspective view of a part of the ceramic laminate block after pressing.

6 is a schematic view of a captured image for explaining an embodiment of a cutting method according to the present invention.

FIG. 7 is a schematic view of a captured image showing a procedure following FIG. 6.

FIG. 8 is a schematic view of a captured image showing handwriting following FIG. 7. FIG.

9 is a schematic view for explaining an embodiment of a cutting method according to the present invention.

It is a schematic diagram which shows the operation procedure of a cutting blade and a disk cam.

FIG. 11 is a schematic diagram illustrating an operation sequence following FIG. 10.

12 is a schematic diagram illustrating an operation sequence following FIG. 11.

It is a schematic diagram which shows the operation handwriting following FIG.

14 is a schematic diagram illustrating an operation sequence following FIG. 13.

FIG. 15 is a schematic diagram illustrating an operation sequence following FIG. 14.

FIG. 16 is a schematic diagram illustrating an operation sequence following FIG. 15.

<Explanation of symbols for the main parts of the drawings>

1: cutting device

2: memory

3: calculator

4: image processing unit

5a, 5b: CCD camera

6: display unit

7: data input

8: motor control unit

9: Motor for driving cutting means

10, 11: table driving motor

12: trigger signal generator

13: encoder

21: table

23: cutting blade

26: internal electrode for capacitor

27, 29: non-exposed part

28: electrode for detection of the scheduled cutting position

30: ceramic laminated block

Claims (6)

A cutting device for cutting a ceramic laminated block formed with a plurality of internal electrodes, Table for mounting the ceramic laminated block, Cutting means disposed above the table, Cutting drive unit for vertically moving the cutting means, Cutting means position detection unit for detecting the position of the cutting means, A planned cutting position detector for detecting a planned cutting position of the ceramic laminated block; A parallel drive for relatively parallel moving the table and the cutting means, and When the position of the cutting means during the rise detected by the cutting means position detecting unit reaches a predetermined position between the highest point and the lowest point of the vertical motion of the cutting means, at least the detection operation of the cutting scheduled position detecting unit and the parallel A cutting device, comprising: a control unit for starting one of the parallel movement operations of the drive unit. The operation of any one of the detection operation of the cutting planned position detection unit and the parallel movement operation of the parallel drive unit is started at least when the blade tip of the cutting means during the rise reaches the position exiting from the ceramic laminated block. Cutting device, characterized in that. The cutting device according to claim 1, wherein the cutting drive unit has a cam mechanism for converting a rotational motion into a vertical motion. The said control means of Claim 1 or Claim 2, When the position of the said cutting means in the descent detected by the said cutting means position detection part reaches a predetermined position before the blade edge | tip of the said cutting means enters the said ceramic laminated block, the said control part will be carried out with the said table. It is confirmed whether the relative parallel movement of the said cutting means is complete, and when it is not completed, the said cutting drive part is paused, The cutting device characterized by the above-mentioned. A cutting method of cutting a ceramic laminate block in which a plurality of internal electrodes are formed, When the cutting means moves up and down at a constant speed to cut the ceramic laminated block, and every time the cutting means reaches a predetermined position between the highest point and the lowest point of the vertical movement of the cutting means, at least the cutting is scheduled. The cutting method characterized by starting any one of a position detection operation | movement and the relative parallel movement operation | movement of a table and a cutting means. The operation according to claim 5, wherein when the blade tip of the cutting means during the rise reaches a position coming out of the ceramic laminate block, at least one of the cutting scheduled position detection operation and the relative parallel movement operation of the table and the cutting means is performed. Disclosed is a cutting method.