JP2649846B2 - Polishing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a polishing apparatus for automatically polishing an object to be polished such as a ferrite core.

(Problems to be Solved by the Related Art and the Invention) Conventionally, there has not been proposed an apparatus for automatically performing operations from loading of a ferrite core to polishing and unloading. There was troublesome manual work for taking out and the like.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a polishing apparatus capable of automatically executing a process from supply of a workpiece to polishing and discharge.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a polishing unit having a reciprocating moving table, a rotary grindstone for polishing an object to be polished on the moving table, A supply-side conveyor for transferring the polished object, a discharge-side conveyor for transferring the polished object after polishing, a supply-side transfer unit for transferring the polished object from the supply-side conveyor onto the moving table, And a discharge-side transfer unit for transferring the polished work to the discharge-side conveyor from the transfer table, and further moving the polished work remaining in the discharge-side transfer unit to the movement of the transfer table. An elimination means for removing by using the polisher is provided so as to be movable up and down in the polishing section.

In the above-described polishing apparatus, a deburring unit for performing deburring of the bottom surface of the object to be polished is provided in the middle of the supply side conveyor, and the object to be polished is fixed on the moving table with the bottom surface of the object to be polished down. Configuration.

Further, the moving table may have a guide ridge on an upper surface thereof, and the moving table may be provided with clamping means for clamping the object to be polished between the guide ridge and the moving table. When the object to be polished is a magnetic material, the moving table may constitute an electromagnetic chuck for attracting the object to be polished.

The supply-side and discharge-side transfer units may be configured to have at least one chuck for holding the workpiece.

(Operation) In the polishing apparatus of the present invention, the object to be polished is supplied to the polishing section via the supply side conveyor and the supply side transfer section, and the object to be polished by the polishing section is transferred to the discharge side transfer section and the polishing section. The paper is discharged through the discharge conveyor, and no manual work is required in each of these steps. Therefore, polishing can be performed extremely efficiently. In addition, by performing deburring on the bottom surface of the workpiece before transferring it to the polishing section, and by securely holding the workpiece on the moving table of the polishing section, high-precision polishing is possible. Can be processed. Further, by the removing means provided in the polishing section, the object to be polished left in the discharge side transfer section can be removed from the moving table, and the object to be polished on the moving table falls down on the moving table. It is possible to prevent a situation in which the remaining processing causes inconvenience in the subsequent processing.

(Embodiment) Hereinafter, an embodiment of the polishing apparatus according to the present invention will be described with reference to the drawings.

FIGS. 1 to 3 show the overall structure of a polishing apparatus. The polishing apparatus has a rotary grindstone for polishing an object to be polished, such as a U-shaped or rectangular parallelepiped ferrite core, and performs a polishing process. Unit 1 and supply-side conveyors 2A and 2B for transferring the material to be polished
And a discharge side conveyor 3 for transferring the polished material after polishing.
And a supply-side transfer unit 4 for transferring an object to be polished from the supply-side conveyor 2B to the polishing unit 1, and a polished object to be polished from the polishing unit 1 onto the discharge-side conveyor 3. A deflashing processing unit 6 disposed between the discharge-side transfer unit 5 and the supply-side conveyors 2A and 2B for performing deburring processing of the object to be polished;
And a grinding fluid supply unit 7 for supplying a grinding fluid to the polishing unit 1.

The polishing section 1 has a moving table 11 that is slidably arranged in a horizontal direction with respect to a base 10 and that reciprocates at a constant cycle.

In addition, four guide rods 12 are vertically installed and fixed on the base 10, and ball bushes 14 fixed to the elevating table 13 are slidably fitted on the respective guide rods 12. Lifting table 13
A rotating shaft of a disk-shaped rotary grindstone 15 is rotatably supported, and the rotary grindstone 15 is driven to rotate by a motor 16 mounted on a lift 13.

A fixed base 20 is fixed to the upper end of the guide rod 12,
A height adjusting mechanism 21 for adjusting the height of the elevating table 13 is attached to the fixed table 20. The adjustment mechanism 21 is configured by, for example, a ball screw or the like that is screwed into a nut on the lifting platform 13 side.

As shown in FIG. 4, the elevator 13 is a linear scale.
The distance between the moving table 11 and the rotating grindstone 15 facing the moving table 11, which is directly connected to the linear scale 25, that is, the polishing amount is arbitrarily set.

The rotation center axis Z of the disc-shaped rotary grindstone 15 is made to completely coincide with the perpendicular to the upper surface of the moving table 11, or is inclined by a small angle θ as shown in FIG. The angle θ is, for example, about 0 ° 1′12 ″ The reason for such an inclination will be described later.

Each of the supply-side conveyors 2A and 2B is a general belt conveyor, and transfers an object to be polished before processing toward the polishing section 1. At the tip of each of the conveyors 2A and 2B, a polished object separating mechanism 30A and 30B having a separation chuck 31, first and second optical sensors 32A and 32B, and a stopper 33 as shown in FIGS. Is arranged.

The supply-side conveyors 2A and 2B are arranged such that the surface to be polished of the object to be polished 40 such as a U-shaped or rectangular parallelepiped ferrite core is directed upward, and the longitudinal direction of the object to be polished is arranged at right angles to the conveying direction, one after another. The separation chuck 31 has a function of holding the work 40 on the conveyor and blocking the flow of the work.

The stopper 33 is moved from the advanced position on the conveyor end of the solid line P in FIG.
Conversely, the solid line P from the retracted position of the virtual line R through the virtual line Q
Reciprocating movement toward the forward position of
The workpiece to be polished that has passed through the separation chuck 31 at the advance position
It serves to keep a group of 40 at the end of the conveyor.

After the first and second optical sensors 32A, 32B both detect the presence of an object to be polished and a predetermined time (by setting a timer) elapses, the separation chuck 31 clamps the object to be polished 40 and other polishing objects. Dust damping, separation of a group of polished objects 40 by advancement of the stopper 33 to the end of the conveyor (solid line P position), and removal of those polished objects by the deburring processing unit 6 or the chuck of the supply-side transfer unit 4 Group of holding transfer, stopper
33. The object to be polished remaining without being chucked is dropped from the conveyor by the retreating upward movement (the virtual line R), and the separation chuck 31 is removed.
Performs a series of operations of releasing the dam on the polished material.

The polished object separation mechanism 30 having a similar mechanism is provided at the tip of the discharge side conveyor 3 for transferring the polished object to be polished.
C is placed. This is to enable automatic transfer to a step of performing cleaning or the like of the object to be polished.

FIG. 7 shows a deburring processing unit 6 which is disposed between the supply-side conveyors 2A and 2B and performs the deburring processing of the object to be polished. The purpose of providing this deburring processing unit 6 is to
Foreign matter adhering to the bottom when is a sintered body such as a ferrite core (material particles of about 0.1 to 0.3 mm adhering during molding or powder coming out of the tray on which the material to be fired is placed during firing)
This is to prevent the polishing accuracy from becoming poor when the polished surface (surface opposite to the bottom surface) is polished while the foreign matter remains attached to the bottom surface.

The deburring processing unit 6 includes a rodless cylinder 41 disposed between the conveyors 2A and 2B,
The chuck 42 performs a horizontal movement from the front end of the conveyor 2A to the rear end of the conveyor 2B and a return movement in the opposite direction.
And deburring abrasive disc (circular sandpaper) 43
And the polishing disk rotation drive motor 44.

The chuck 42 holds a group of the polished objects 40 separated at the end of the conveyor 2A by the polished object separation mechanism 30A and moves in the direction of the conveyor 2B from above the conveyor 2A, and in the middle thereof, the bottom surface of the polished object 40. Is applied to the polishing disk 43 to remove burrs on the bottom surface, and then a group of the objects to be polished is transferred onto the conveyor 2B. Here, the polishing disk axis S is inclined with respect to the vertical axis by an angle φ (where φ is 3 to 5 °). Due to this inclination, when a group of the workpieces 40 separated at the end of the conveyor 2A is clamped by the chuck 42, even if the clamping positions vary (even if the workpieces come in and out), the workpieces are polished. The polishing disk 43 is pressed against the bottom surface.

FIGS. 8 and 9 show the configuration and operation of the supply-side transfer unit 4. The supply-side transfer unit 4 is separated at the end of the supply-side conveyor 2B by the polished object separation mechanism 30B. The moving table 11 of the polishing section 1 while holding a group of
Has a function to transfer to the top.

The supply-side transfer section 4 includes a fixed support frame 50 horizontally fixed at a predetermined height with respect to the base 10, a ball screw 51 horizontally supported by the fixed support frame 50, A servo motor 52 that rotationally drives the ball screw 51, a lateral moving frame 53 that has a nut that is screwed into the ball screw 51 and moves laterally by the rotation of the ball screw 51, and is vertically movable with respect to the lateral moving frame 53. It has an elevating member 54 attached thereto, and two pairs of chucks 55A and 55B attached to the elevating member 54. The lifting drive of the lifting member 54 is performed by an air cylinder 56 attached to the horizontal moving frame 53, and the opening and closing of the chucks 55A and 55B are performed by air cylinders (not shown) arranged on the lifting member 54 side, respectively. Further, the distance between the chucks 55A and 55B can be changed by another air cylinder.

Now, on the conveyors 2A and 2B, the polished objects 40 are arranged in one row, whereas on the moving table 11 of the polishing section 1, the polished objects 40 are arranged in two rows. Therefore, the left and right chucks 55A,
55B are opened, the gap between the chucks 55A and 55B is increased, and the supply-side transfer unit 4
9A, the first half of a group of the workpieces 40 separated at the end of the conveyor 2B is clamped by the left side chuck 55A as shown in FIG. 9 (A), and then the horizontal moving frame 53 is moved by a predetermined amount. Then, the latter half of the group to be polished is held by the right chuck 55B as shown in FIG. Thus, the supply-side transfer unit 4
The workpieces 40 held in a row are transported above the moving table 11 by the raising and lowering members 54 and the horizontal moving frame 53, and further by the lowering members 54 as shown in FIG. At a position close to the moving table 11. However, at this time, the holding of the chuck is still continued, and the object to be polished 40 is arranged on the left and right across the guide ridge 60 at the center of the moving table 11. Thereafter, the gap between the chucks 55A and 55B is reduced, and the left and right polished objects 40 are brought closer to the guide ridges 60 and brought into contact as shown in FIG. Is lowered, and the objects to be polished 40 arranged in two rows are placed on the moving table 11 as shown in FIG.

The moving table 11 constitutes an electromagnetic chuck (with a built-in electromagnet). The object to be polished 40, which is a magnetic substance, is attracted to the table by electromagnetic force, and after the objects to be polished are released from the chucks 55A and 55B, the ascent is returned, As shown in FIG. 9 (F), the objects to be polished are arranged in two rows by a clamp arm 61 provided on the moving table 11.
The table is mechanically sandwiched between 40 and guide ridges 60
Mechanically secure to 11

The mechanism of the discharge-side transfer unit 5 for transferring the polished workpiece 40 from the polishing unit 1 onto the discharge-side conveyor 3 is the same as the supply-side transfer unit 4 described above. The operation is as follows. After the clamp arm 61 of the moving table 11 is opened and the electromagnetic chuck is turned off, the group of polished objects 40 arranged in two rows as shown in FIG. 10 (A) is simultaneously held by two pairs of chucks 55A and 55B. As shown in FIG. 7B, the holder 55 is moved upward while increasing the distance between the chucks 55A and 55B and moved sideways to cover one row of the right chuck 55B on the discharge side conveyor 3 as shown in FIG. Abrasive 4
Then, the workpieces 40 for one row of the chuck 55A on the left side are placed thereon, and the workpieces 40 are transferred onto the conveyor 3 so as to be arranged in one row.

A wiper mechanism 65 as shown in FIGS. 11 and 12 is provided on the side of the polishing unit 1 where the supply-side transfer unit is disposed, and the wiper mechanism 66 wipes the transfer table 11 with a rubber wiper 66. ing. In those figures, a vertical slide guide 67 is fixed to a support plate 67A fixed to the base 10 side,
A slide rod 68 penetrates the slide guide 67 slidably in the vertical direction. A mounting member 69 is fixed to the lower end of the slide rod 68, and a rubber wiper 66 is fixed to the mounting member 69. The vertical slide guide 67
An air cylinder 70 is provided between the air cylinder 70 and the mounting member 69. When the air cylinder 70 is contracted, the wiper 66 is in the raised position, and when the air cylinder 70 is extended, the wiper 66 is lowered and pressed against the moving table 11 to perform required wiping. Perform the operation. The wiper 66 is formed with a notch 72 for avoiding the guide ridge 60 on the moving table side. The wiping operation of the wiper 66 is performed at the time of the movement operation (movement in the direction of the arrow X in FIG. 1) of the normal movement table 11 to the supply-side transfer unit 4 side.

A grinding liquid supply port 71 for supplying the grinding liquid onto the moving table 11 is also provided near the lower end of the wiper 66.

Further, on the arrangement side of the discharge side transfer unit of the polishing unit 1,
Polished material left behind by the transfer unit 5 after polishing
An object to be polished 75 is provided to remove 40 by utilizing the reciprocating motion of the moving table 11. As shown in FIG. 13, a vertical slide guide 77 is fixed to a support plate 76 fixed to the base 10 side, and a slide rod 78 slides the slide guide 77 in the vertical direction. It penetrates freely. Further, a metal removing member 79 is fixed to the lower end of the slide rod 78. A notch 80 is formed in the removing member 79 to avoid the guide ridge 60 on the moving table side. Vertical slide guide 77 and rejection member
An air cylinder 81 is provided between the air cylinders 81, and when the air cylinder 81 is contracted, the removing member 79 is in the raised position. Transfer table for polishing object 40 left behind by transfer unit 5
During the movement operation (11 in the direction of the arrow X in FIG. 1) to the supply-side transfer section 4 of FIG.

As shown in FIG. 1, the grinding fluid supply unit 7 has a clean tank 90, a dirty tank 91, and a centrifuge 92. Rotary grindstone 15 of polishing section 1 from clean tank 90
And the clean grinding fluid supplied to the wiper 66 cools the rotary grindstone 15 and the like, and flows dirt on the workpiece 40 and the moving table 11 to become dirty grinding fluid. Collected in the tank 91. Dirty tank
The grinding fluid in 91 is sent to a centrifugal separator 92, where it is filtered and supplied to a clean tank 90 as a clean grinding fluid.

 Next, the overall operation of the embodiment will be described.

The workpieces 40 transported in a single row on the supply side conveyor 2A are separated into a group of workpieces 40 by the workpiece separation mechanism 30A at the tip of the conveyor 2A. While being transported in the direction of the conveyor 2B while being held in the direction shown in FIG. Polished material 40 left behind by chuck 42
The stopper 33 of the separation mechanism 30A drops from the tip of the conveyor as the conveyor 2A travels due to the movement of the stopper 33 to the retreating and rising position to the position of the virtual line Q in FIG.

A group of polished objects 40 held by the chuck 42 and subjected to the deburring process of the bottom surface is transferred onto the conveyor 2B, reaches the tip of the conveyor 2B by the transport operation of the conveyor 2B, and is separated by the polished object separation mechanism 30B. It is separated into a group of abrasives 40. These are the left and right chucks 55A, 55A of the supply-side transfer section 4.
The moving table 11 of the polishing section 1 is held in two rows by B
(The state has been moved to the right as shown by the solid line in FIG. 1). At this time, the polishing target 40 remaining without being held by the chucks 55A and 55B is the stopper 3 of the separation mechanism 30B.
3 When the conveyor 2B moves to the retreating and ascending position, the conveyor 2B falls from the tip of the conveyor.

The object to be polished in two rows arranged on the moving table 11 of the polishing section 1 is moved with the polished surface facing upward.
The upper surface of the moving table 11 is moved to the discharge-side transfer unit 5 side (in the direction of the arrow AX in FIG. 1) by the disk-shaped rotating grindstone 15 by suction and fixed by the electromagnetic chuck 11 and the mechanical clamp arm 61. Undergoes plane polishing.

When the rotation center axis Z shown in FIG. 2 of the disc-shaped rotary grindstone 15 completely coincides with the perpendicular to the upper surface of the moving table 11, the polished surface of the workpiece 40 is as shown in FIG. When the rotation center axis Z is slightly tilted, the iris state is not obtained as shown in FIG.

After the movement of the moving table 11 in the direction of the arrow AX is completed and all the objects to be polished 40 on the table have been polished, the objects to be polished 40 are arranged in two rows by the two pairs of chucks of the discharge-side transfer unit 5. Are sandwiched and transferred to the discharge-side conveyor 3 in a single-row arrangement. Then, the sheet is sent to the front end side by the transport operation of the discharge side conveyor 3.

The object 40 to be polished remaining without being held by the chuck of the discharge-side transfer portion 5 is moved downward by setting the removing member 79 of the object-to-be-polished removing means 75 to the descending position close to the moving table 11.
The moving table 11 drops from the table by moving in the direction of the arrow X.

(Effects of the Invention) As described above, according to the polishing apparatus of the present invention, each process from supply of the object to be polished to polishing and discharging can be automatically executed, thereby saving labor and improving the efficiency of the polishing operation. Can be achieved. Further, the object to be polished can be reliably and accurately held on the table, and a high-precision polishing can be realized by performing a deburring process or the like of the bottom surface of the object to be polished before polishing.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a polishing apparatus according to the present invention,
FIG. 2 is a front view, FIG. 3 is a side view, FIG. 4 is a side view showing a linear scale portion of the polishing section in the embodiment, FIG. 6 is a front view of the same, FIG. 7 is a front view of the deburring section, FIG. 8 is a side view showing the supply-side transfer section, FIG. 9 is an operation explanatory view of the supply-side transfer section, FIG. Is an explanatory view of the operation of the discharge-side transfer section, FIG. 11 is a front view showing the wiper mechanism, FIG. 12 is a side view of the same, FIG.
FIG. 13 is a front view showing an object-to-be-polished removing means, and FIG. 14 is an explanatory view showing a state of a polished surface of the object to be polished. 1 ... polishing section, 2A, 2B ... supply side conveyor, 3 ... discharge side conveyor, 4 ... supply side transfer section, 5 ... discharge side transfer section, 6 ... deburring processing section, 7 ... ... Grinding fluid treatment unit, 11 ...
… Movable table, 15… Disc-shaped rotary whetstone, 16,44,52 ……
Motor, 25 Linear scale, 30A, 30B, 30C Separation mechanism for polished object, 31 Separation chuck, 33 Stopper,
40: Polished object, 41: Rodless cylinder, 42, 55A, 5
5B ... Chuck, 43 ... Abrasive disk, 56,70,81 ... Air cylinder, 60 ... Guide ridge, 65 ... Wiper mechanism, 75 ... Equipment removal mechanism.

Claims (5)

(57) [Claims] 1. A polishing section having a moving table for reciprocating movement, a rotary grindstone for polishing an object to be polished on the moving table, a supply side conveyor for transferring the object to be polished, and a polishing object after polishing. A discharge-side conveyor for transferring objects, a supply-side transfer unit for transferring an object to be polished from the supply-side conveyor onto the moving table, and an object to be polished after being polished from the moving table onto the discharge-side conveyor. And a discharge-side transfer unit for transferring the object.The polishing unit is provided with an elimination unit that removes the object to be polished remaining in the discharge-side transfer unit by using the movement of the moving table so as to be movable up and down. A polishing device characterized by the following. 2. A deburring section for performing a deburring process on the bottom surface of the object to be polished is provided in the middle of the supply side conveyor, and the object to be polished is fixed on the moving table with the bottom surface of the object to be polished down. The polishing apparatus according to claim 1, wherein the polishing is performed. 3. The moving table has a guide ridge on an upper surface thereof, and a clamp means for clamping an object to be polished between the guide and the guide ridge is provided on the movable table. 2. The polishing apparatus according to 2. 4. The polishing apparatus according to claim 1, wherein the object to be polished is a magnetic material, and said moving table constitutes an electromagnetic chuck for attracting said object to be polished. 5. The supply-side and discharge-side transfer section has at least one chuck for holding an object to be polished.
The polishing apparatus according to 1, 2, 3 or 4.