JP4764782B2 - Centrifugal barrel polishing machine and method for loading workpiece of centrifugal barrel polishing machine - Google Patents

Description

  The present invention relates to a centrifugal barrel polishing machine and a workpiece charging method of a centrifugal barrel polishing machine.

Conventionally, there is a centrifugal barrel polishing machine described in Patent Document 1. This is a rotating plate that is provided with a plurality of barrel tanks that are capable of rotating at intervals in the circumferential direction. A work to be polished is put into the barrel tank to revolve the rotating plate and rotate the barrel tank. By doing so, the work in the barrel tank is polished. The operation of this centrifugal barrel polishing machine is automatically performed by the processing data input to the sequence program, and basically uses all barrel tanks (for example, if there are four barrel tanks, four are operated). I am going to drive.
Japanese Unexamined Patent Publication No. 63-185656

In the centrifugal barrel polishing machine as described above, when the workpiece enters the final stage of the production lot or when the workpiece is a prototype, there is not enough quantity to be put into all barrel tanks. It is desirable to operate using only two barrel tanks that are diagonally arranged in the tank.
However, in the conventional centrifugal barrel polishing machine, the sequencer is programmed to load workpieces into all four barrel tanks, so when using only two barrel tanks among the four barrel tanks, It was necessary to perform a manual operation so as not to put workpieces into the two barrel tanks.
The present invention has been completed based on the above-described circumstances, and distinguishes between barrel tanks that require workpiece loading and barrel tanks that do not require workpiece loading, and automatically control workpiece loading operations. The purpose is to be able to.

As means for achieving the above object, the invention of claim 1 comprises a revolving rotating plate, and at least four barrel tanks provided on the rotating plate so as to be capable of rotating at intervals in the circumferential direction. The at least four barrel tanks are sequentially moved to the workpiece loading position by intermittent rotation of the rotating plate, and at the workpiece loading position, the workpiece is loaded into the barrel tank to which the workpiece is to be loaded and loaded into the barrel tank. The workpiece is to be polished, and when the workpiece is not put into some of the at least four barrel tanks, the barrel tank and the workpiece to be charged should be charged. said barrel tank not, a centrifugal barrel polishing machine balance during rotation is adapted to be arranged so as not to collapse, requiring introduction of the workpiece the Introduction of barrel tank and work to identify the unwanted said barrel tank comprises a sequencer for controlling the introduction of workpiece, said sequencer, said at least four of said barrel should not be charged with the work of the barrel tank A storage unit for storing dummy data indicating that charging is not necessary with respect to the tank, and when the barrel tank is moved to the workpiece charging position, the dummy data regarding the barrel tank is stored on the condition that the dummy data is stored. And a control unit that controls a workpiece loading operation and executes a workpiece loading operation on the barrel tank on condition that the dummy data regarding the barrel tank is not stored.

  The invention of claim 2 comprises the work discharge means for discharging the work from the barrel tank when the barrel tank moves to the work discharge position after completion of polishing, according to the invention of claim 1. The control unit, with respect to the barrel tank to be charged with a workpiece, a storage operation for storing in the storage unit identification data indicating that the workpiece has been loaded as the workpiece is loaded into the barrel tank, When the workpiece is discharged from the barrel tank for the first time after completion of polishing, an erase operation for erasing the storage of the dummy data, and when the barrel tank moves to the workpiece discharge position, the barrel tank The discharge operation of the workpiece to the barrel tank is restricted on the condition that the dummy data is erased and the identification data is not stored. The identification data has a feature where the is adapted to perform a control operation to execute the discharging operation of the work for the barrel tank on condition that it is stored that.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the rotating plate is arranged differently from the other barrel tanks for each barrel tank, and all the barrels are arranged. In the tank, there is provided a plurality of dogs that are unified as either an even number or an odd number, and includes a single parity check sensor, and a detection means comprising a plurality of sensors arranged to correspond to all the dogs. It has features where it is provided.

According to a fourth aspect of the present invention, there is provided a centrifugal barrel in which at least four barrel tanks are provided on a revolving rotating plate so as to be capable of rotating at intervals in the circumferential direction, and a workpiece thrown into the barrel tank is polished. In the polishing machine, the at least four barrel tanks are sequentially moved to the workpiece loading position by intermittent rotation of the rotating plate, and the barrel tank that requires workpiece loading and the barrel tank that does not require workpiece loading are identified, When the workpiece is loaded into the barrel tank to which the workpiece is to be loaded at the workpiece loading position, and the workpiece is ground without polishing the workpiece into some of the at least four barrel tanks, the workpiece is It said barrel tank should not be turned on the barrel tank and the workpiece to be turned, a work piece introducing method of arranging such balance during rotation does not collapse, Serial stored in the storage unit dummy data indicating that it is unnecessary turned with respect to said barrel tank should not be turned on a work of at least four barrel tank, when the barrel tank is moved to the workpiece loading position, the barrel tank The work is not inserted into the barrel tank on condition that the dummy data is stored, and the work is input to the barrel tank on condition that the dummy data is not stored on the barrel tank. It has the characteristics.

  According to a fifth aspect of the present invention, in the apparatus according to the fourth aspect of the present invention, with respect to the barrel tank to which a work is to be loaded, identification indicating that the work has been loaded as the work is loaded into the barrel tank. Data is stored, and when the barrel tank is moved to the workpiece discharge position after completion of polishing, the workpiece is discharged from the barrel tank. When the workpiece is discharged from the memory, the storage of the dummy data is deleted, and when the barrel tank is moved to the workpiece discharge position, the dummy data related to the barrel tank is deleted and the identification data is also stored. If the workpiece is not stored, the workpiece is not discharged from the barrel tank, and the identification data relating to the barrel tank is stored. Characterized in place of performing the discharge operation of the work that for the barrel tank on condition that.

<Invention of Claims 1 and 4>
By storing in advance dummy data related to barrel tanks that do not require workpiece loading, barrel tanks that require workpiece loading and barrel tanks that do not require workpiece loading are identified, and workpiece loading operations are performed. Can be controlled automatically.

<Invention of Claims 2 and 5>
Based on the presence / absence of the dummy data and the identification data, it is possible to determine whether or not the work discharging operation is required for the barrel tank, so that it is possible to avoid a wasteful process of executing the discharging operation for the empty barrel tank.

<Invention of Claim 3>
Since the arrangement of the dogs is different for each barrel tank, the position of each barrel tank can be detected based on the presence or absence of detection of the dog in each sensor. In addition, if the number of dogs corresponding to each barrel tank is an even number, if all the sensors are functioning normally, the number of sensors that detect dogs in any barrel tank is uniform. However, if one sensor stops functioning, the number of sensors that detect dogs in any barrel tank becomes an odd number, and based on this, it is possible to detect sensor malfunction. If the number of dogs related to one barrel tank is an odd number, contrary to the above, the number of sensors that detect dogs in any barrel tank becomes an even number, thereby detecting sensor abnormality. it can.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. 1 to 13.
<Overall configuration of centrifugal barrel polishing machine>
The centrifugal barrel polishing machine of this embodiment includes an input table mechanism 10, an in-tank input mechanism 20, a polishing mechanism 30, a discharge mechanism 52, a selection mechanism 53, and a sequencer 60. In the loading table mechanism 10, polishing stones and workpieces to be charged into the barrel tanks 33 </ b> A to 33 </ b> D are prepared, and the prepared polishing stones and workpieces are charged into the barrel tanks 33 </ b> A to 33 </ b> D by the tank charging mechanism 20. After the water and the compound are charged in 30, the workpiece is polished. After the polishing, the workpiece in the barrel tanks 33 </ b> A to 33 </ b> D is discharged by the discharging mechanism 52, and the discharged material is discharged in the sorting mechanism 53. Selected. Each operation of these mechanisms 10, 20, 30, 52, 53 is controlled by the sequencer 60.

<Input table mechanism 10>
The loading table mechanism 10 has a known structure in which three buckets (not shown) for loading polishing stones and workpieces are arranged on a rotatable table (not shown). The table stops rotating at intervals of 120 degrees, and at each of the three stop positions, the grinding stone loading means 11 for loading the polishing stone, the workpiece loading means 12 for loading the workpiece, and the bucket are raised. And the conveyor means 13 which replaces the contents in the input chute of the next process is provided.

<Introducing mechanism 20 in the tank>
The tank charging mechanism 20 also has a well-known structure, and has a charging chute (not shown) arranged so as to correspond to the raised position of the bucket of the conveyor means 13. From the raised bucket, polishing stones and workpieces are thrown into the throwing chute. Thereafter, the grinding chute and the workpiece are put into the barrel tanks 33A to 33D that stand by at the feeding position P of the polishing mechanism 30 (the workpiece discharge position, which is a constituent requirement of the present invention) by vibrating the feeding chute.

<Polishing mechanism 30>
The polishing mechanism 30 couples a pair of left and right rotating plates 31 so as to rotate integrally by a horizontal revolution shaft 32 concentric with the rotating plate 31, and from the center of rotation between the left and right rotating plates 31. The first to fourth four barrel tanks 33A to 33D are arranged at eccentric positions. The four barrel tanks 33A to 33D are arranged at intervals of 90 ° in the circumferential direction, and are supported to be rotatable relative to the rotating plate 31 by horizontal rotation shafts 34 provided on the left and right outer surfaces of the barrel tanks 33A to 33D. ing. Each of the barrel tanks 33A to 33D has a known hexagonal shape as viewed from the side, and has a known structure in which an opening (not shown) on the upper surface is provided with a lid 35 that can be opened and closed. When polishing, the revolving motor 36 is started, and the revolving motor 36 revolves the rotating plate 31 and the four barrel tanks 33A to 33D as a single body, and the multi-row revolving pulley provided on the revolving shaft 32. The barrel tanks 33A to 33D are made relatively to the rotating plate 31 by belts (not shown) hung on the rotation pulleys 34A to 34D provided on the rotation shafts 34 of the barrel tanks 33A to 33D. Rotate.

  On the outer surface of one rotating plate 31, first to fourth four detection units 38 </ b> A to 38 </ b> D spaced by 90 ° in the circumferential direction are 1: 1 so as to correspond. The four detection units 38A to 38D are configured by arranging two dogs 40a to 40d on a mounting plate 39 elongated in the radial direction, and each mounting plate 39 is located at a position far from a position near the rotation center of the rotating plate 31. Detection positions are set in order. As shown in FIG. 5, the dogs 40 a and 40 d of the first detection unit 38 </ b> A are disposed at the first detection position closest to the rotation center on the mounting plate 39 and the fourth detection position farthest from the rotation center. As shown in FIG. 3, the dogs 40a and 40c of the second detection unit 38B are arranged at the first detection position and the third detection position slightly inside the fourth detection position farthest from the rotation center. The dogs 40c and 40d of the third detection unit 38C are arranged at the third detection position and the fourth detection position. The dogs 40a and 40b of the fourth detection unit 38D are disposed at the first detection position and the second detection position slightly outside the first detection position. That is, the two dogs 40a, 40b, 40c, and 40d provided in each of the detection units 38A to 38D are arranged differently between the barrel tanks 33A to 33D, and thereby the rotation directions of the barrel tanks 33A to 33D. The position in the (circumferential direction) can be detected. In addition, the number of dogs 40a, 40b, 40c, and 40d arranged in each of the detection units 38A to 38D is unified to an even number (two) in all the detection units 38A to 38D (barrel tanks 33A to 33D). Among the four detection positions, empty detection positions where the dogs 40a, 40b, 40c, 40d are not arranged are also an even number (dogs 40a, 40b, 40c, 40c, 40d) in all the detection units 38A to 38D (barrel tanks 33A to 33D). The same number as 40d).

  Further, in the vicinity of the rotating plate 31 on the side where the dogs 40a, 40b, 40c, 40d are arranged, the revolution position detecting means 41 corresponding to the dogs 40a, 40b, 40c, 40d (detection which is a constituent requirement of the present invention). Means) are fixedly provided. The revolution position detection means 41 includes first to fourth four sensors 41a to 41d (proximity switches) corresponding to the first detection position to the fourth detection position, and each of the sensors 41a, 41b, 41c, 41d It is detected whether or not the dogs 40a, 40b, 40c, 40d are arranged at the corresponding detection positions. Of the four sensors 41a, 41b, 41c, and 41d, the first sensor 41a corresponding to the dog 40a at the first detection position is a parity check sensor.

  Furthermore, one rotation plate 31 is formed with a revolution restricting concave portion 42 in a form in which four positions at 90 ° intervals on the outer peripheral edge thereof are cut out into a substantially semicircular shape. When any one of the barrel tanks 33A to 33D is in a loading position P, which will be described later, a knock (not shown) of the revolution lock means 43 is fitted into the revolution regulating recess 42 and the rotating plate 31 is locked so as not to rotate. At the same time, the rotation of the rotating plate 31 is allowed in a state where the knock is not fitted into the revolution regulating recess 42.

  In each of the barrel tanks 33A to 33D, a circular detection plate 44 disposed outside the rotating plate 31 is provided so as to rotate integrally with the barrel tanks 33A to 33D. On the outer surface of each detection plate 44, a detected portion 45 is provided that is eccentric from the center of rotation. This detected part 45 is arrange | positioned so that it may respond | correspond with the direction of the lid | cover 35 (opening part) in barrel tank 33A-33D. On the other hand, in the vicinity of the detection plate 44, a rotation position detection means 46 for detecting the presence or absence of the detected portion 45 is provided. In addition, each detection plate 44 is formed with a rotation restricting recess 47 having a shape in which the outer periphery is cut into a semicircular shape. The rotation restricting recess 47 is arranged to correspond to the direction of the lid 35 (opening) in the barrel tanks 33 </ b> A to 33 </ b> D, similarly to the detected portion 45. When any one of the barrel tanks 33A to 33D is at a loading position P to be described later and the barrel tanks 33A to 33D are rotated by the rotation motor 37 so as to maintain a predetermined charging posture with the lid 35 facing upward, A knock (not shown) of the rotation lock means 48 is fitted into the rotation restricting recess 47 and the barrel tanks 33A to 33D and the detection plate 44 at the input position P are locked to be non-rotatable, and the knock is locked to the rotation restricting recess 47. In the state where it is not fitted, the barrel tanks 33A to 33D and the detection plate 44 are allowed to rotate.

  In the revolution path of the barrel tanks 33A to 33D, a loading position P for loading workpieces and the like into the barrel tanks 33A to 33D is set. When the barrel tanks 33A to 33D are at the loading position P, the barrel The detectors 38A to 38D corresponding to the tanks 33A to 33D are detected by the revolution position detecting means 41, and the detected part 45 of the barrel tanks 33A to 33D is detected by the rotation position detecting means 46. . 1 and 3 show a state in which the first barrel tank 33A is at the loading position P. Further, the polishing mechanism 30 includes water supply means 49 for supplying polishing water to the barrel tanks 33A to 33D locked at the input position P, and a barrel tank 33A locked at the input position P. Compound feeding means 50 for feeding a polishing compound to .about.33D is provided. Further, a manipulator 51 for opening and closing the lid 35 of the barrel tanks 33A to 33D is provided in the vicinity of the charging position P.

<Discharge mechanism 52>
The discharge mechanism 52 has a known structure having a conveyance surface (not shown) provided with a vibration motor (not shown), and further sprays the cleaning liquid from above the conveyance surface by a shower nozzle. . The grinding stones, workpieces, water, and compounds discharged from the barrel tanks 33A to 33D onto the conveyance surface are conveyed while being evenly diffused while receiving vibrations from the vibration motor.

<Selecting mechanism 53>
The grinding stone, work, water, and compound evenly diffused by the discharge mechanism 52 are transferred to the sorting mechanism 53. The sorting mechanism 53 has a well-known structure having a vibration motor (not shown) below the sorting net (not shown), and water, compound and grinding stone fall from the mesh of the sorting net, and the workpiece vibrates. It is conveyed on the mesh surface while receiving vibrations from the motor. The work conveyed to the end on the mesh surface enters a processed work bucket (not shown). On the other hand, the grinding stone that has fallen from the sorting net enters the grinding stone bucket that waits ahead while being vibrated and conveyed on the lower part of the mesh surface. The grinding stones contained in the grinding stone bucket are returned to the grinding stone input means 11 by a vacuum device (not shown).

<Sequencer 60>
The centrifugal barrel polishing machine described above is provided with a sequencer 60 for controlling the loading of workpieces into the barrel tanks 33A to 33D. The sequencer 60 includes a storage unit 61 and a control unit 67.
As shown in the block diagram of FIG. 6, the storage unit 61 includes storage areas 62A, 62B, and 62C for first to third buckets, a storage area 63 for in-vessel charging mechanisms, and a storage area 64A for first to fourth barrel tanks. To 64D, an ejection mechanism storage area 65, and a sorting mechanism storage area 66, as shown in the list of FIG. 7, the stored data of “L0” to “L326” corresponding to the storage area is stored. It is set as basic memory. The timing of storing and erasing each stored data will be specifically described together with the description of the polishing process described later.

The control unit 67 performs a storage operation for storing the stored data in the storage areas 62A to 66, an erasing operation for erasing the stored storage data, and polishing as the series of steps necessary for polishing the workpiece proceeds. And a control operation for controlling a series of mechanisms 10, 20, 30, 52, 53 required for the above. The specific operation of the control unit 67 will be specifically described together with a description of a polishing process described later.
Further, the sequencer 60 performs a polishing process in a two-tank mode in which polishing is performed using only two barrel tanks 33A to 33D out of four by operation in an operation mode on an operation panel (not shown), and four barrel tanks 33A. It is possible to switch to a 4-tank mode polishing process in which polishing is performed using all of ~ 33D. Hereinafter, the polishing process in the 2-tank mode and the polishing process in the 4-tank mode will be described.

<Two tank mode polishing process>
Next, the polishing process in the two tank mode will be described with reference to FIGS.
In the loading table mechanism 10, when the table rotates and the empty first bucket reaches the polishing stone charging stop position, the control unit 67 of the sequencer 60 activates the polishing stone charging means 11 to start the first operation. A polishing stone is put into one bucket, and the storage data “L0” of “Abrasive stone present” is set (stored) in the first bucket storage area 62A.

  Next, when the table rotates and the first bucket reaches the workpiece loading stop position, the workpiece loading means 12 is activated by the control operation of the control unit 67 and the workpiece is loaded into the first bucket. As a result of the erasing operation and the storage operation 67, the storage data “L0” of “Abrasive stone present” is erased in the first bucket storage area 62A, and the storage data “L20” and “work present” stored “Abrasive stone present” Data “L22” is stored. At this time, the empty second bucket that has moved to the stop position for inserting the polishing stone is charged with the polishing stone in the same manner as described above, and the storage data “the presence of the polishing stone” is stored in the second bucket storage area 62B. L0 "is stored.

  Thereafter, when the table rotates, the first bucket moves to the conveyor stop position. In the first bucket storage area 62A, the storage data “L20” for “with grinding stone” and the storage data “for work” are “ “L22” is erased, and the storage data “L40” of “with polishing stone” and the storage data “L42” of “with work” are stored. In addition, the second bucket moves to the workpiece loading stop position, the workpiece is loaded into the second bucket, and the storage data “L0” of “with grinding stone” is erased in the second bucket storage area 62B. , Storage data “L20” of “having a grinding stone” and storage data “L22” of “working” are stored. Further, the empty third bucket moves to the polishing stone charging stop position, and the polishing stone is loaded into the third bucket. In the third bucket storage area 62 </ b> C, the storage data “with polishing stone” is “ L0 "is stored.

  Thereafter, at the stop position for the conveyor, the conveyor means 13 raises the first bucket by the control operation of the control unit 67, and the polishing stone in the first bucket is placed on the charging chute of the tank charging mechanism 20 that waits ahead. Input the workpiece. Accordingly, the storage data “L40” of “Abrasive stone” and the storage data “L42” of “Work” are deleted from the first bucket storage area 62A by the storage operation and the deletion operation of the control unit 67. Then, the storage “L100” of “having a grinding stone” and the storage data “L102” of “with a workpiece” are stored in the storage area 63 for the charging mechanism in the tank.

As described above, the polishing mechanism 30 causes the first barrel tank 33 </ b> A to wait at the charging position P while the polishing stone and the workpiece are being charged into the tank loading mechanism 20. At this time, the dogs 40a and 40d of the first detection unit 38A of the rotating plate 31 are detected by the first sensor 41a (parity sensor) and the fourth sensor 41d of the revolution position detecting means 41, and the first sensor 41a to 1 Bit parity information is output to the control unit 67, and 3 bits of barrel tank information from the fourth sensor 41d (the second sensor 41b and the third sensor 41c are not provided with corresponding dogs. Bit information is detected, and only the fourth sensor 41d detects the dog and detects "1" bit information, so the 3-bit information of "001" is used as barrel tank information. Even when a dog is detected by one or two sensors 41b to 41d, the description will be given with 3 bits.) Is output to the control unit 67, and the first barrel tank 33A is It is detected which is located ON position P.
Subsequently, when the control unit 67 detects that the storage data (including the storage data “L203” of “with dummy work”) is not stored in the first barrel tank storage area 64A, the control is performed. By the control operation of the portion 67, the knock of the revolution lock means 43 is fitted into the revolution regulating recess 42, and the rotation of the rotating plate 31 (revolution of the first barrel tank 33A) is regulated. Thereafter, by the control operation of the control unit 67, the rotation motor 37 is operated to adjust the posture of the first barrel tank 33A so that the lid 35 and the opening portion face upward, and the knock of the rotation lock means 48 is the rotation restriction recess. The first barrel tank 33A is locked so as not to rotate (spin).

  When the first barrel tank 33A is fixed, the manipulator 51 descends from above by the control operation of the control unit 67, releases the tightening of the lid 35 of the barrel tank 33A, and then grips the lid 35 and retreats upward. The opening of the first barrel tank 33A is opened. Next, by the control operation of the control unit 67, the polishing stone and the work are introduced into the first barrel tank 33 </ b> A from the charging chute of the tank charging mechanism 20, and the storage operation and the erasing operation of the control unit 67 The storage data “L100” of “with polishing stone” and the storage data “L102” of “with workpiece” in the storage mechanism storage area 63 are erased, and the storage of “with polishing stone” is stored in the first barrel tank storage area 64A. The data “L200” and the storage data “L202” (identification data which is a constituent requirement of the present invention) of “work presence” are stored.

  Next, by the control operation of the control unit 67, the water input means 49 is activated to supply water to the first barrel tank 33A, and the storage data “L206” of “water existence” is stored in the first barrel tank storage area 64A. Remember. Subsequently, by the control operation of the control unit 67, the compound charging means 50 is activated to input the compound into the first barrel tank 33A, and the storage data “L204” “compounded” is stored in the first barrel tank storage area 64A. Remember. Thereafter, the manipulator 51 attaches the lid 35 to the opening of the first barrel tank 33A and automatically tightens it by the control operation of the controller 67. After tightening, the manipulator 51 is retracted upward.

  In addition, as described above, the operation of putting the grinding stone or the like into the first barrel tank 33A and the storage operation of the storage data in the first barrel tank storage area 64A are performed, and at the same time, the storage operation of the control unit 67 In the 2-barrel tank storage area 64B, storage data “L223” (dummy data which is a constituent of the present invention) of “with dummy work” is stored. When the dummy storage data “L223” is stored, the control unit 67 considers that the work has been put into the second barrel tank 33B. At this time, not only the second barrel tank storage area 64B but also the fourth barrel tank storage area 64D may store “D263” stored “L263”.

  Thereafter, the revolution lock and rotation lock of the first barrel tank 33A by knocking are released, the rotating plate 31 is rotated by 90 °, and the second barrel tank 33B is moved to the charging position P. Then, the dogs 40a and 40c of the second detection unit 38B are detected by the first sensor 41a and the third sensor 41c, and 1-bit parity information is output from the first sensor 41a to the control unit 67, and the third sensor 41c. 3 bits of barrel tank information (in this case “010”) is output to the controller 67, and it is detected that the second barrel tank 33B has reached the loading position P. Subsequently, when the control unit 67 detects that the storage “L223” of “with dummy work” is stored in the second barrel tank storage area 64B, the second barrel tank 33B is locked by knocking. The rotating plate 31 is rotated by 90 ° without performing the operation and the operation of putting the grinding stone, workpiece, water and compound.

  When the rotating plate 31 rotates 90 °, the third barrel tank 33C reaches the charging position P. Then, the dogs 40c and 40d of the third detection unit 38C are detected by the third sensor 41c and the fourth sensor 41d, and 3-bit barrel tank information (here, “011”) is obtained from the third sensor 41c and the fourth sensor 41d. ) Is output to the controller 67, and it is detected that the third barrel tank 33C has reached the charging position P. Thereafter, when the control unit 67 detects that the storage data (including the storage data “L243” of “with dummy work”) is not stored in the third barrel tank storage area 64C, Similar to the first barrel tank 33A, the third barrel tank 33C is locked in a state where its revolution and rotation are restricted, the lid 35 is removed by the manipulator 51, and the polishing stone and the workpiece are removed from the charging chute of the tank charging mechanism 20. It is thrown into the third barrel tank 33C. Then, the storage data “L100” of “with grinding stone” and the storage data “L102” of “with workpiece” in the storage mechanism storage area 63 in the tank are erased, and “polishing stone” is stored in the third barrel tank storage area 64C. The storage data “L240” of “Yes” and the storage data “L242” of “Work” are stored. Next, water and a compound are put into the third barrel tank 33C, and the storage data “L246” of “water existence” and the storage data “L244” of “compound” are stored in the storage area 64C for the third barrel tank. Then, the lid 35 is closed.

In addition, when the storage data “L263” of “with dummy work” is not stored in the storage area 64D for the fourth barrel tank during the charging operation to the first barrel tank 33A, the storage to the third barrel tank 33C is performed. When the loading is performed, the storage data “L263” of “with dummy work” is stored.
Note that the fourth barrel tank 33D is not moved to the loading position P because the storage data “L263” of “with dummy work” is stored in the fourth barrel tank storage area 64D.

Thus, the preparations for polishing the first to fourth barrel tanks 33A to 33D are completed. Thereafter, the revolution motor is activated to cause the four barrel tanks 33A to 33D to rotate and revolve for a predetermined time. As a result, the workpiece is polished in the first barrel tank 33A and the third barrel tank 33C.
When the polishing step is completed, the revolution and rotation of the barrel tanks 33A to 33D are stopped, and the first barrel tank storage area 64A, the second barrel tank storage area 64B, the third barrel tank storage area 64C, and the fourth barrel tank. The storage data “L208”, “L228”, “L248”, and “L268” of “polishing completed” are stored in the storage area 64D, respectively.

  When the rotating plate 31 stops, a barrel tank position indexing motor (not shown) is operated to rotate the rotating plate 31 at a low speed, and the first detection unit 38A is detected by the sensors 41a and 41d of the revolution position detecting means 41. When the control unit 67 detects that the storage data “L202” of “work is present” is stored in the first barrel tank storage area 64A, the rotation of the rotating plate 31 is stopped. Thereby, the first barrel tank 33A stops at the charging position P. Here, for convenience of explanation, the first detection unit 38A of the first barrel tank 33A is detected first, but when the third detection unit 38C of the third barrel tank 33C is detected first, the first barrel tank The third barrel tank 33C may be stopped at the charging position P before 33A. Subsequently, the rotation motor 37 is operated, and the first barrel tank 33A stops in a posture with the lid 35 facing upward.

Thereafter, the manipulator 51 descends from above, releases the tightening of the lid 35 of the first barrel tank 33A, subsequently holds the lid 35 and retracts upward, tilts the first barrel tank 33A, and The grinding stone, workpiece, water, and compound in the barrel tank 33A are discharged to the discharge mechanism 52. In the discharge mechanism 52, the discharged polishing stone, workpiece, water, and compound are vibrated and conveyed on the conveyance surface by the control operation of the control unit 67 and washed by the shower nozzle.
As a result of this discharge operation, the storage data “L200” of “Abrasive stone”, the storage data “L202” of “Work”, and “Compound” stored in the first barrel tank storage area 64A are stored. The stored data “L204”, the stored data “L206” of “Mizuyu”, and the stored data “L208” of “Polishing completed” are erased, and the stored data of “Polished stone” is stored in the discharge mechanism storage area 65. “L300”, “work-with” storage data “L302”, “compound with” storage data “L304”, and “water-with” storage data “L306” are stored.

  Simultaneously with the discharge operation from the first barrel tank 33A to the discharge mechanism 52 (the stored data erasing operation in the first barrel tank storage area 64A and the storage operation of the discharge mechanism storage area 65), the second barrel tank storage The stored data “L223” of “with dummy work” and the stored data “L228” of “polishing completed” stored in the area 64B are deleted. At this time, not only the storage data “L223” and “L228” of the second barrel tank storage area 64B but also the “dummy work present” storage “L263” and “ The stored data “L268” of “polishing completed” may be erased together.

  The grinding stone, workpiece, water, and compound discharged to the discharge mechanism 52 are conveyed to the sorting mechanism 53. Accompanying the transport to the sorting mechanism 53, the storage data “L300” of “Abrasive stone”, the storage data “L302” of “Work”, and “Water” stored in the discharge mechanism storage area 65 are stored. Storage data “L306” and “compound present” storage data “L304” are erased, and the sorting mechanism storage area 66 stores “polishing stone present” storage data “L320” and “work present”. The storage data “L322”, the storage data “L326” of “Mizuyu”, and the storage data “L324” of “Compound” are stored.

  In the sorting mechanism 53, the grinding stone and the work are sorted, and the work advances on the net surface and enters the processed work bucket that waits at the end, and the grinding stone falls from the sorting net, and at the tip. Enter the waiting stone bucket. When the sorting operation of the sorting mechanism 53 is completed, the storage data “L320” of “with polishing stone”, the storage data “L322” of “with work” stored in the storage area 66 for sorting mechanism, and “water” The stored data “L326” of “present” and the stored data “L324” of “compounded” are erased.

  Thereafter, when the rotary plate 31 rotates 90 ° and the second barrel tank 33B moves to the loading position P, the second barrel tank storage area 64B includes the storage data “L223” of “with dummy work”. The control unit 67 detects that the stored data is not stored, and based on the detection result without storage, the rotating plate 31 rotates 90 degrees without performing the discharging operation to the second barrel tank 33B. The third barrel tank C moves to the charging position P.

  When the third barrel tank 33C moves to the loading position P, the revolution position detecting means 41 detects the third detection unit 38C, thereby restricting the rotation of the rotating plate 31 (revolution of the third barrel tank 33C), and The rotation motor 37 is activated, and the third barrel tank 33C is locked in a posture with the lid 35 facing upward. Then, similarly to the first barrel tank 33A, the polishing stone, workpiece, water, and compound in the third barrel tank 33C are discharged to the discharge mechanism 52, and are stored in the third barrel tank storage area 64C together with this discharge operation. Storage data “L240” for “with grinding stone”, storage data “L242” for “work”, storage data “L244” for “compound”, and storage data “L246” for “water” , The storage data “L248” of “polishing completed” is erased, the storage data “L300” of “polishing stone”, the storage data “L302” of “work” is stored in the discharge mechanism storage area 65, “ The storage data “L304” of “compound present” and the storage data “L306” of “water present” are stored.

It should be noted that when the storage data “L300”, “L302”, “L304”, and “L306” are stored in the discharge mechanism storage area 65, the discharge mechanism storage is accompanied by the discharge operation of the first barrel tank 33A. The stored data stored in the area 65 has already been erased.
In addition, at the time when the discharge from the first barrel tank 33A to the discharge mechanism 52 is performed, the “dummy work” storage “L263” and “polishing completed” stored in the fourth barrel tank storage area 64D are stored. When the stored data “L268” is not erased, the stored data “L263” and “L268” are stored in the fourth barrel tank storage area in accordance with the discharging operation from the third barrel tank 33C to the discharging mechanism 52. Erase from 64D.

  When the grinding stone, workpiece, water, and compound are conveyed from the discharge mechanism 52 to the sorting mechanism 53, the storage data “L300” stored in the discharge mechanism storage area 65 is the same as in the case of the first barrel tank 33A. ”,“ L302 ”,“ L306 ”, and“ L304 ”are erased, and the storage data“ L320 ”,“ L322 ”,“ L326 ”, and“ L324 ”are stored in the storage area 66 for the sorting mechanism.

Since no storage data is stored in the fourth barrel tank storage area 64D including the storage data “L263” of “with dummy work”, the fourth barrel tank 33D is moved to the loading position P. No movement or discharge operation is performed.
Thus, the two-tank mode polishing process using the first barrel tank 33A and the third barrel tank 33C arranged diagonally is completed.

<4 tank mode polishing process>
Next, a four-tank mode polishing process in which polishing stones, workpieces, water, and a compound are put into all four barrel tanks 33A to 33D for polishing will be described with reference to FIGS.
The operation in the charging table mechanism 10 and [the operation in the tank charging mechanism 20 are the same as in the two-tank mode.
In the polishing mechanism 30, the loading operation of the workpiece and the like with respect to the first barrel tank 33A and the storage data and the storage and erasure regarding the first barrel tank 33A are performed in the same manner as in the two tank mode. Is stored in the second barrel tank storage area 64B, the storage data “L223” (dummy data which is a constituent of the present invention) of “with dummy work” is not stored. Further, the storage data “L263” (dummy data which is a constituent of the present invention) of “with dummy work” is not stored in the fourth barrel tank storage area 64D. Of course, regarding the first barrel tank storage area 64A and the third barrel tank storage area 64C, the storage operation of the storage data “L203” and “L243” of “with dummy work” is not performed.

Thereafter, when the second barrel tank 33B moves to the loading position P, the storage data “L223” of “with dummy work” is not stored in the second barrel tank storage area 64B. Similarly, an operation of loading a workpiece or the like with respect to the second barrel tank 33B and a storage operation and an erasing operation of the storage data with respect to the second barrel tank storage area 64B are performed.
As for the third barrel tank 33C, as in the two tank mode, the operation of loading workpieces and the like and the operation of storing and erasing stored data in the third barrel tank storage area 64C are performed. In the storage area 64B and the fourth barrel tank storage area 64D, the storage operation of the storage data “L223” and “L264” (dummy data which is a constituent element of the present invention) of “with dummy work” is not performed.

Similarly to the second barrel tank 33B, the fourth barrel tank 33D after this is not stored with the storage data “L263” of “with dummy work”, and therefore, similarly to the first to third barrel tanks 33A to 33C. Then, a work input operation, a storage data storage operation and an erasure operation are performed.
Furthermore, the operation | movement by the discharge mechanism 52 and the selection mechanism 53 is performed similarly to the above about all the barrel tanks 33A-33D.

<Switching from 4 tank mode to 2 tank mode>
When the workpiece to be polished is in the final stage of the production lot, the 4-tank mode is switched to the 2-tank mode for production volume adjustment. In this case, as shown in FIG. After discharging and sorting are completed for all 33D, switching to the two tank mode is performed. For example, when the 4-tank mode ends with the discharge of the fourth barrel tank 33D, in order to shorten the setup time, a polishing stone, a workpiece, water, and a compound are put into the fourth barrel tank 33D to perform the operation of storing the stored data. At the same time, the storage data “L203” of “with dummy work” is stored for the first barrel tank 33A arranged adjacent to the fourth barrel tank 33D. Subsequently, the grinding stone, work, water, and compound are put into the second barrel tank 33B to perform the storing operation, and at the same time, the storage data “L243” of “with dummy work” is stored in the third barrel tank 33C.

<Switching from 2 tank mode to 4 tank mode>
When moving from the final stage of the production lot to the next new production lot, the 2-tank mode is switched to the 4-tank mode. An example of the switching is shown in FIG. In this case, polishing is performed using the second barrel tank 33B and the fourth barrel tank 33D, but the polishing stones, workpieces, water, and compound in the fourth barrel tank 33D are discharged to store the fourth barrel tank storage area 64D. At the same time as erasing the stored data, the stored data “L203” of “with dummy work” in the first barrel tank storage area 64A is deleted. Next, a new production lot grinding stone, workpiece, water, and compound are sequentially placed in the fourth barrel tank 33D to store the stored data.

After this, when the first barrel tank 33A comes to the loading position P, a new production lot grinding stone, workpiece, water, and compound are sequentially added to store the stored data.
Next, when the second barrel tank 33B comes to the loading position P, the grinding stone, workpiece, water and compound in the second barrel tank 33B are discharged and the stored data is erased. The stored data “L243” of “Yes” is deleted. Thereafter, the grinding data, workpiece, water, and compound for a new production lot are sequentially placed in the second barrel tank 33B to store the stored data.
Thereafter, when the third barrel tank 33C comes to the loading position P, a new production lot grinding stone, workpiece, water, and compound are put in order to store the stored data.

In the present embodiment, the storage unit 61 that stores dummy data indicating that the two barrel tanks 33A to 33D that should not be loaded with workpieces among the four barrel tanks 33A to 33D are unnecessary, and the barrel tanks 33A to 33D. When the 33D moves to the loading position P, the workpiece loading operation to the barrel tanks 33A to 33D is restricted on the condition that dummy data relating to the barrel tanks 33A to 33D is stored, and the barrel tanks 33A to 33D are related. Since the sequencer 60 provided with the control part 67 which performs the loading operation | movement of the workpiece | work with respect to the barrel tanks 33A-33D on the condition that dummy data is not memorize | stored is provided, the barrel tanks 33A- 33D and the barrel tanks 33A to 33D that do not require the loading of workpieces are identified, and It can be automatically controlled to the closing operation.
That is, when the workpiece to be polished is in the final stage of the production lot or when the workpiece to be polished is in the prototype stage, polishing can be performed without using all the barrel tanks 33A to 33D. And since setup operation, such as throwing in the workpiece | work regarding the unused barrel tanks 33A-33D, is abbreviate | omitted, the whole setup change can be performed rapidly.

Moreover, the control part 67 of this embodiment is (a) About the barrel tanks 33A-33D which should throw in a workpiece | work, that the workpiece | work was thrown in as the workpiece | work was thrown into the barrel tanks 33A-33D. A storage operation for storing the identification data to be stored in the storage unit 61; and (b) an erasing operation for erasing the storage of the dummy data as the work is first discharged from the barrel tanks 33A to 33D after the polishing is completed. (C) When the barrel tanks 33A to 33D are moved to the workpiece discharge position (loading position P), the dummy tanks are deleted on the condition that the dummy data related to the barrel tanks 33A to 33D is erased and the identification data is not stored. The discharge operation of the workpiece to 33A to 33D is regulated, and on condition that the identification data regarding the barrel tanks 33A to 33D is stored. Control operation to perform the discharging operation of the workpiece relative to barrel tank 33A to 33D, it is adapted to perform and.
With this configuration, since it is possible to determine whether or not the work discharging operation is required for the barrel tanks 33A to 33D based on the presence or absence of dummy data and identification data, the discharging operation is executed for the empty barrel tanks 33A to 33D. The useless process can be avoided.

Further, in the present embodiment, the rotating plate 31 is provided with dogs 40a, 40b, 40c, and 40d that are different from the other barrel tanks 33A to 33D for each barrel tank 33A to 33D, and the dogs 40a, 40b, The number of 40c, 40d is standardized to two (even number) in all the barrel tanks 33A to 33D. Further, a revolution position detection comprising four sensors 41a, 41b, 41c, 41d including one parity check sensor (first sensor 41a) and arranged to correspond to all the dogs 40a, 40b, 40c, 40d. Means 41 are provided. According to such a configuration, since the arrangement of the dogs 40a, 40b, 40c, and 40d is different for each of the barrel tanks 33A to 33D, the presence or absence of detection of the dogs 40a, 40b, 40c, and 40d in each of the sensors 41a, 41b, 41c, and 41d. Based on the above, the positions of the barrel tanks 33A to 33D can be detected.
Further, since the number of dogs 40a, 40b, 40c, and 40d corresponding to each barrel tank 33A to 33D is two, any barrel can be used as long as all the sensors 41a, 41b, 41c, and 41d are functioning normally. Regarding the tanks 33A to 33D, the number of sensors 41a, 41b, 41c and 41d for detecting the dogs 40a, 40b, 40c and 40d is unified by two (even numbers), but one sensor 41a, 41b and 41c is used. , 41d does not function, the number of sensors 41a, 41b, 41c, 41d that detect the dogs 40a, 40b, 40c, 40d in any of the barrel tanks 33A-33D becomes one (odd number). Based on this, it is possible to detect a malfunction of the sensors 41a, 41b, 41c, and 41d.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) The dummy data may be stored before the work is first put into the barrel tank.
(2) The number of barrel tanks may be 5 or more. In this case, when the number of barrel tanks is relatively large, the number of barrel tanks may be a prime number, but when the number of barrel tanks is relatively small, polishing is performed without putting a workpiece into some barrel tanks. In order to prevent the balance from being lost during rotation, the number is preferably a number other than a prime number.
(3) It may be determined that the work discharging operation is not required on the condition that the dummy data is stored without erasing the dummy data.
(4) The number of dogs in each detector may be an odd number.
(5) The number of sensors constituting the detection means may be five or more. In this case, the number may be an odd number or an even number.

The side view showing arrangement of the barrel tank of Embodiment 1 Cross section of polishing mechanism Side view of polishing mechanism Partial enlarged side view of revolution position detection means Partial enlarged front view of revolution position detection means Block Diagram List of stored data List of stored data in 2 tank mode List of stored data in 4 tank mode Time chart showing polishing process in 2 tank mode Time chart showing polishing process in 4 tank mode Time chart showing changeover from 4 tank mode to 2 tank mode Time chart showing changeover from 2 tank mode to 4 tank mode

Explanation of symbols

31 ... Rotating plate 33A ... 1st barrel tank 33B ... 2nd barrel tank 33C ... 3rd barrel tank 33D ... 4th barrel tank 40a, 40b, 40c, 40d ... Dog 41 ... Revolution position detection means (detection means)
41a ... 1st sensor (parity check sensor)
41b ... 2nd sensor 41c ... 3rd sensor 41d ... 4th sensor 52 ... Discharge mechanism 60 ... Sequencer 61 ... Storage part 67 ... Control part L203 ... Storage data (dummy data) of "with dummy work"
L223: Storage data of “Dummy work” (dummy data)
L243 ... "Dummy work" stored data (dummy data)
L263 ... Storage data for "Dummy work" (dummy data)
L202 ... Stored data (identification data) of "work exists"
L222 ... Stored data (identification data) of "work exists"
L242 ... Stored data (identification data) of "work exists"
L262 ... "Stored" stored data (identification data)
P: Input position (work discharge position)

Claims (5)

A revolving rotating plate,
And at least four barrel tanks provided on the rotating plate so as to be able to rotate at intervals in the circumferential direction,
The at least four barrel tanks are sequentially moved to the workpiece loading position by intermittent rotation of the rotating plate,
At the workpiece loading position, the workpiece is loaded into the barrel tank where the workpiece is to be loaded,
The work put in the barrel tank is polished ,
When polishing in a state in which a part of the at least four barrel tanks is not charged with workpieces, the barrel tank to which workpieces are to be loaded and the barrel tank to which workpieces are not to be loaded are balanced during rotation. It is a centrifugal barrel polishing machine that is arranged so as not to collapse ,
A sequencer that controls the loading of workpieces by identifying the barrel vessel that requires workpiece loading and the barrel vessel that does not require workpiece loading,
The sequencer is
A storage unit that stores dummy data indicating that it is not necessary to insert a workpiece among the at least four barrel tanks that should not be charged with a workpiece;
When the barrel tank moves to the workpiece loading position, the workpiece loading operation for the barrel tank is restricted on the condition that the dummy data regarding the barrel tank is stored, and the dummy data regarding the barrel tank is stored. A centrifugal barrel polishing machine, comprising: a control unit that executes a workpiece loading operation on the barrel tank on condition that the barrel tank is not. When the barrel tank moves to the workpiece discharge position after completion of polishing, it is provided with a workpiece discharge means for discharging the workpiece from the barrel tank,
The controller is
With respect to the barrel tank to which a workpiece is to be charged, a storage operation for storing in the storage unit identification data indicating that the workpiece has been loaded as the workpiece is loaded into the barrel tank;
As the work is first discharged from the barrel tank after polishing is completed, an erasing operation for erasing the storage of the dummy data,
When the barrel tank moves to the workpiece discharge position, the dummy data relating to the barrel tank is erased and the identification data is not stored, and the discharge operation of the workpiece with respect to the barrel tank is regulated, and the barrel tank 2. The centrifugal barrel polishing machine according to claim 1, wherein a control operation for executing a work discharging operation for the barrel tank is performed on condition that the identification data relating to the tank is stored. The rotating plate is provided with a plurality of dogs that are arranged differently from the other barrel tanks, and that the number of arrangements is unified to either an even number or an odd number in all barrel tanks. ,
3. The centrifugal barrel polishing machine according to claim 1, further comprising detection means comprising a plurality of sensors arranged to correspond to all dogs, including one parity check sensor. . In the centrifugal barrel polishing machine in which at least four barrel tanks are provided on the revolving rotating plate so as to be capable of rotating at intervals in the circumferential direction, and the workpiece thrown into the barrel tank is polished.
The at least four barrel tanks are sequentially moved to the workpiece loading position by intermittent rotation of the rotating plate,
Identifying the barrel tank that requires workpiece input and the barrel tank that does not require workpiece input,
At the workpiece loading position, the workpiece is loaded into the barrel tank where the workpiece is to be loaded ,
Among the at least four barrel tanks, when polishing without putting workpieces into some of the barrel tanks, the barrel tank to which workpieces are to be loaded and the barrel tank to which workpieces are not loaded are It is a work input method to arrange so that the balance is not lost ,
Storing dummy data indicating that it is not necessary to insert a workpiece among the at least four barrel tanks with respect to the barrel tank;
When the barrel tank is moved to the workpiece loading position, the dummy data related to the barrel tank is not stored and the dummy data related to the barrel tank is stored on condition that the dummy data related to the barrel tank is stored. A workpiece loading method for a centrifugal barrel polishing machine, characterized in that the workpiece is loaded into the barrel tank on the condition that there is no workpiece. With respect to the barrel tank to which the workpiece is to be charged, the identification data indicating that the workpiece has been loaded with the workpiece being loaded into the barrel tank is stored,
When the barrel tank moves to the workpiece discharge position after completion of polishing, the workpiece is discharged from the barrel tank.
As the work is first discharged from the barrel tank after polishing is completed, the storage of the dummy data is erased,
When the barrel tank moves to the workpiece discharge position, the dummy data relating to the barrel tank is erased and the identification data is not stored, and the barrel is not discharged and the barrel is not discharged. 5. The work feeding method for a centrifugal barrel polishing machine according to claim 4, wherein the work is discharged from the barrel tank on condition that the identification data relating to the tank is stored.

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