JP2012218132A - Deburring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deburring device that obtains excellent polishing performance at all time and executes deburring efficiently.SOLUTION: The deburring device includes a polishing unit 10 formed into a flat plate shape and provided with polishing belts 9 on a pair of surfaces thereof respectively, feeding units 21A, 21B that feed the polishing belts 9 respectively to respective surfaces of the polishing units 10, and an excitation unit 30 that vibrates the polishing units 10 in the direction along the surfaces. The polishing unit 10 includes a pair of holding plates 11 arranged to be parallel to each other at a predetermined interval, a turning unit 12 arranged on the distal end side of the holding plates 11, an introducing unit 13 arranged on the inner peripheral side of the base end side of the holding plates 11, and a delivering unit 14 arranged on the outer peripheral side of the base end side of the holding plates 11. A pair of the polishing belts 9 are arranged so as to be fed from the feeding units 21A, 21B to the introducing unit 13, to be made to pass between the holding plates 11 and turned at the turning unit 12, to be sent along the outer side of the holding plates 11, and to be collected from the delivering unit 14 to collecting units 21C, 21D.

Description

  The present invention relates to a deburring device for deburring a product using a polishing belt and renewing a polishing surface by sequentially feeding the polishing belt.

Conventionally, machine products are variously processed in a manufacturing factory. In a workpiece (work) that has been subjected to machining such as cutting, there is a case where unprocessed material (so-called burrs) adheres to the edges and corners of the product. For this reason, a deburring device is used for deburring the workpiece before sending the workpiece to the next process.
As a deburring device, a polishing belt coated with an abrasive is continuously fed to polish a workpiece like a so-called belt sander (Patent Document 1), and a surface in a state where the polishing belt is in contact with the workpiece. What grind | polishes by applying the vibration of a direction is known (patent document 2).
In such a vibration-type deburring apparatus, deburring is performed in a specific polishing region on the surface of the polishing belt. In the polishing region, the polishing performance decreases with the progress of deburring. In such a case, the polishing material disposed in the polishing region is renewed by feeding the polishing belt more than the polishing region, thereby recovering the polishing performance.

JP 2000-24901 A JP 2000-218485 A

By the way, in the apparatus of Patent Document 2 described above, a work is conveyed by a belt conveyor, and a polishing belt for deburring is brought into contact from above. For this reason, multi-direction deburring such as the front and back of the workpiece cannot be performed at once.
On the other hand, if the workpiece is lifted by an articulated robot arm that has been frequently used in recent years and the front and back surfaces of the workpiece are sequentially brought into contact with the polishing belt, multi-direction deburring can be performed collectively.
However, in order to turn the work upside down with the robot arm, a complicated operation such as turning the work upside down once away from the polishing belt is required, and there is a problem that the processing time becomes longer.

  A main object of the present invention is to provide a deburring device capable of always obtaining good polishing performance and efficiently performing deburring.

  A deburring apparatus according to the present invention includes a polishing unit that is flat and has a pair of surfaces on which a polishing belt is disposed, a vibration unit that vibrates the polishing unit in a direction along the surface, and the polishing unit. And a receiving portion that is installed between the vibrating portion and supplies the polishing belt to the polishing portion and collects the polishing belt from the polishing portion, and the receiving portion is provided on each surface of the polishing portion, respectively. A supply unit for supplying a polishing belt; and a recovery unit for recovering the polishing belt from each surface of the polishing unit, wherein the polishing units are arranged in parallel at a predetermined interval so that the inner surfaces face each other and the outer surface A pair of holding plates facing outward, a turning part installed on the side opposite to the excitation part of the holding plate, installed on the side of the excitation part of the holding plate, and from the supply part The introduction part where the polishing belt is introduced and the front A holding portion installed on the side of the vibrating portion of the holding plate and sending the polishing belt to the collecting portion; a pair of the polishing belts being supplied from the supply portion to the introducing portion and being held by the holding plate It is arranged so that it may be sent along the rolling plate, turned by the turning unit, returned along the holding plate, and collected from the sending unit to the collecting unit.

In the present invention, the polishing belt is supplied from the supply unit of the housing unit to the polishing unit, and in this state, the polishing unit is vibrated by the vibration unit, and the workpiece is brought into contact with the polishing belt by a robot arm or the like. Deburring by polishing can be performed.
At this time, since the polishing belt is disposed on each of the pair of surfaces in the polishing portion, the surface of the workpiece can be polished on one surface and the back surface of the workpiece can be polished on the opposite surface. That is, even when deburring the front and back of the work, it is not necessary to turn the work upside down and the deburring can be performed efficiently.
In addition, since the polishing belt can be sequentially updated by being collected by the collecting unit while being supplied from the supply unit to the polishing unit, good polishing performance can be always obtained in the polishing unit. In particular, since a pair of polishing belts is used and a fresh polishing belt can be supplied to each surface of the polishing portion, good polishing performance can be obtained at any time on any of the pair of surfaces.

  In the present invention, the introduction part is installed on the inner surface side of the holding plate on the exciting part side, and the feeding part is installed on the outer surface side of the holding plate on the exciting part side, and the supply The part is installed closer to the excitation part than the recovery part, and the pair of polishing belts are introduced from the supply part to the introduction part and sent through the inner surface side of the holding plate, and the turning part It is desirable to arrange so as to be turned around, returned along the outer surface side of the holding plate, delivered from the delivery unit, and collected by the collection unit.

  With this arrangement, the polishing belt passes through the inside of the polishing portion, that is, between the pair of holding plates, as a fresh polishing belt, and deburring is performed by the polishing belt that returns along the outer surface of the polishing portion. Since the arrangement is performed, it is possible to avoid the possibility that the burr or the like attached to the polishing belt between the pair of holding plates interferes with the surroundings to stop the operation, and an efficient deburring operation can be performed.

In the present invention, it is preferable that the supply unit has a supply reel on which the fresh polishing belt is wound, and the recovery unit has a recovery reel on which the recovered polishing belt is wound.
By using such a supply reel and a recovery reel, the handling performance of the polishing belt can be enhanced. By using reels of the same standard as the supply reel and the recovery reel, the reels can be used sequentially.

In the present invention, it is desirable that each of the rolling parts is a roller that rolls on a polishing belt. Such a roller enables smooth guide of the polishing belt.
In the present invention, it is desirable to use a structure for bringing the polishing belt along the holding plate in the introduction part and the recovery part. As the introduction portion, the end portion of the holding plate itself may be used as a guide, or a guide roller or the like may be installed at a position close to or apart from the guide plate. A roller or a restraining member can be used as the collection unit, and stability during polishing can be enhanced by pressing the polishing belt against the holding plate using a detachable restraining member.

In the present invention, it is desirable that a cushion material is stretched on the outer surface of the holding plate that is outside the polishing portion.
In the present invention, when the work is brought into contact with the surface side of the polishing belt, since the back side is a cushioning material, the polishing belt is slightly depressed, and sufficient contact between the polishing belt and the edge of the work is obtained. , Deburring performance can be improved.

In this invention, it has a floating mechanism which supports the said grinding | polishing part, The said floating mechanism supports the said grinding | polishing part so that a displacement in the thickness direction of the said holding plate, and the said grinding | polishing part is both sides of the said thickness direction. It is desirable that the pair of urging bodies be adjusted to an urging force that holds the polishing portion at substantially the center of the displacement range of the support body.
In the present invention, since the polishing portion is supported in a floating manner, when the workpiece is pressed against the polishing belt, the polishing portion appropriately escapes, and the contact pressure of the workpiece against the polishing belt can be maintained substantially constant. For this reason, it is possible to avoid excessive polishing of the workpiece due to excessive contact pressure and to perform appropriate deburring with constant contact pressure. Further, the floating mechanism can be appropriately displaced according to the contact of the workpiece, and even if there is a slight variation in the dimensions of the workpiece, this can be allowed.

The side view which shows one Embodiment of this invention. The top view which shows the said embodiment. Sectional drawing which shows the 3-3 cross section of the said embodiment. The enlarged front view which abbreviate | omitted the tip from the 3-3 cross section of the said embodiment. The perspective view which shows the principal part of the said embodiment. The side view which shows the holding plate of the said embodiment. The top view which shows the holding | maintenance plate of the said embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1, 2, 3, and 4, the deburring device 1 according to the present embodiment vibrates the flat plate-like polishing unit 10, the housing unit 20 that supplies a polishing belt to the polishing unit 10, and the polishing unit 10. And an excitation unit 30 to be operated. The storage unit 20 is provided on the upstream side of the polishing unit 10, and the vibration unit 30 is provided on the upstream side of the storage unit 20. Here, since the polishing belt is supplied from the storage unit 20 to the polishing unit 10, the storage unit 20 side is the upstream side with respect to the polishing unit 10 side.
The polishing unit 10 and the storage unit 20 are supported by the front frame 3 fixed to the base 2 installed on the ground. The vibration unit 30 is independent of the front frame 3 and is fixed to the base 2 via a rear frame 4 provided on the upstream side of the front frame 3.

The front frame 3 has a pair of frame plates 3A arranged in parallel, and a top plate 3B is fixed to the upper ends of these frame plates 3A. The frame plate 3A is arranged in a state perpendicular to the ground (so that the plate thickness direction is parallel to the ground), and the top plate 3B is in a state horizontal to the ground. It is fixed at the top of the.
A pair of guide rails 41 extending in the direction from the vibration unit 30 toward the polishing unit 10 is installed on the top surface of the top plate 3B, and a guide plate 42 is slidably supported on the guide rails 41 (FIG. 3). And FIG. 4). These guide rails 41 and guide plates 42 constitute a guide mechanism 40.

  A take-out member 43 is fixed on the upper surface of the guide plate 42, and the tip 43A on the polishing portion 10 side is formed one step lower. A floating rail 51 extending in the thickness direction of the polishing portion 10 is installed at this portion, and a floating plate 52 is slidably supported on the floating rail 51 (see FIGS. 1 and 4).

In FIG. 4, a pair of pins 53 and 54 are fixed to the tip of the take-out member 43, and a similar pin 55 is fixed to a portion 52 </ b> A that extends downward from the tip side of the floating plate 52. Ring-shaped cords 56 and 57 made of elastomer are stretched between the pin 53 and the pin 55 and between the pin 54 and the pin 55, respectively. The tension of the cords 56 and 57 causes the pin 55 to be pulled from both sides. Has received the urging power of The tension | tensile_strength of the cords 56 and 57 is made substantially equal, Therefore, the pin 55 is hold | maintained in the intermediate position of the pins 53 and 54 which the tension | tensile_strength from both sides balances.
Here, the floating rail 51 and the floating plate 52 constitute the support of the present invention, and the cords 56 and 57 correspond to the urging body of the present invention, and the floating mechanism 50 of the present invention by these support and urging body. The floating plate 52 is maintained at a substantially intermediate position of the floating rail 51 unless it receives an external force in a displaceable direction.

As shown in FIGS. 1, 2, and 4, the polishing unit 10 is supported by the front frame 3 via a floating mechanism 50 and a guide mechanism 40.
As shown in FIG. 5, the polishing unit 10 has a flat plate shape, and a polishing belt 9 is disposed on each of a pair of surfaces. The polishing unit 10 is parallel to each other at a predetermined interval and perpendicular to the ground ( A pair of holding plates 11 arranged in a state where the plate thickness direction is horizontal with respect to the ground), a turning portion 12 installed on the leading end side (downstream tip portion) of the holding plate 11, and the holding plate 11 It has an introduction portion 13 installed on the inner surface side of the base end side (upstream tip portion) and a clamp 14 as a delivery portion installed on the outer surface side of the holding plate 11 on the base end side.

A pair of holding plates 11 is fixed back to back on the upper surface of the floating plate 52, and a space is provided between each of them so that two polishing belts 9 can be overlapped.
As shown in FIGS. 6 and 7, the holding plate 11 is entirely made of a metal plate, and one surface has a proximal side (right side in the drawing) 3/5 to a distal side (left side in the drawing). ), A recess 11A is formed, and a sheet-like cushion material 11B is stretched in the recess 11A. The cushion material 11B is entirely formed of a synthetic resin material foam or the like, but has a surface film made of a low friction material on the surface, and is configured to reduce sliding resistance with the polishing belt 9. Has been.

Returning to FIG. 5, two holding plates 11 as described above and the cushion material 11 </ b> B are fixed back to back on the polishing portion 10 so that the cushion material 11 </ b> B is on the outer surface side.
The rolling unit 12 is composed of a guide roller 12A mounted on the front end side of the holding plate 11, and rotates the polishing belt 9 that has reached the front end side through the inside of the pair of holding plates 11 in a reverse direction. 11 can be sent out along the outer surface (the surface on which the cushion material 11B is stretched).

The introduction portion 13 is configured by opposing edges on the base end side of the pair of holding plates 11, and the accommodating portion 20 (a supply reel which is a supply portion described later) is formed in a gap formed by the edges of the pair of holding plates 11. The polishing belt 9 is supplied from 21A, 21B).
The clamp 14 serving as a delivery unit includes a holding member 14 </ b> A installed on the outer surface side of the base end side of the pair of holding plates 11. The holding member 14 </ b> A is driven by a drive source 14 </ b> B such as a solenoid or an air cylinder fixed to the upper surface of the take-out member 43, and can be pressed against or separated from the outer surfaces on the base end side of the pair of holding plates 11. In the polishing unit 10, when the polishing belt 9 is sent, the holding member 14 </ b> A is separated, and when polishing is performed, the polishing belt 9 is held by the holding member 14 </ b> A, so that the polishing belt 9 is brought into close contact with the holding plate 11. it can.

The accommodating part 20 accommodates the two polishing belts 9 used for polishing by the polishing part 10, and supplies and collects them on each side of the polishing part 10. For this purpose, the storage unit 20 includes a pair of supply reels 21A and 21B for supplying (unwinding) two fresh polishing belts 9 as supply units, and two used polishing belts 9 as recovery units. Is provided with a pair of recovery reels 21C and 21D.
The supply reel 21B is symmetrical with respect to the supply reel 21A, and the recovery reel 21D is symmetrical with respect to the center line in the width direction of the deburring device 1 (direction perpendicular to the supply direction of the polishing belt 9) with respect to the recovery reel 21C. Is arranged. Further, the supply reels 21A and 21B are disposed in the vicinity of the downstream side of the vibration unit 30, and the recovery reels 21C and 21D are disposed on the downstream side of the reels 21A and 21B.

Guide rollers 22A and 22B are installed in the middle of the path between the reels 21A and 21B on the unwinding side and the introducing portion 13, and between the pair of polishing belts 9 supplied to the introducing portion 13 from the supply reels 21A and 21B. The width dimension can be made close to the size of the gap of the introduction part 13.
Guide rollers 22C and 22D are installed in the middle of the path between the take-up reels 21C and 21D and the clamp 14, and the width dimension between the pair of polishing belts 9 collected from the clamp 14 to the collection reels 21C and 21D. Can be guided to the vicinity of the reels 21C and 21D while maintaining the width of the clamp 14 (the size of the gap between the pair of holding members 14A constituting the clamp 14).

The supply reels 21A and 21B and the recovery reels 21C and 21D described above are driven by drive motors 23A to 23D (see FIGS. 1 and 3) supported on the side surfaces of the front frame 3, respectively.
When the polishing belt 9 is fed, the supply reels 21A and 21B and the recovery reels 21C and 21D are driven to rotate. The rotation torque of the recovery reels 21C and 21D is supplied so that an appropriate tension is obtained for the polishing belt 9. It is desirable to make it slightly stronger than the reels 21A and 21B.
Further, it is desirable that the recovery reels 21C and 21D and the supply reels 21A and 21B are synchronized in rotation so that the pair of polishing belts 9 can be fed at a constant speed in the polishing unit 10.

The vibration unit 30 vibrates the polishing unit 10 in a direction along the surface thereof.
As shown in FIG. 1, the excitation unit 30 includes a cylindrical vibration generator 31 using an electric motor or the like, and the vibration generator 31 is orthogonal to the center line in the width direction of the deburring device 1. Both ends in the width direction of the deburring device 1 are rotatably supported by the rear frame 4 with the direction as an axis, and the amount of protrusion of the contact bolts 32A and 32B at the upper and lower two points on the back surface is adjusted to thereby adjust the vibration axis direction Can be adjusted.
Usually, the vibration axis direction of the vibration generator 31 is adjusted in accordance with the direction of the guide rail 41 of the guide mechanism 40.
The output shaft 31A of the vibration generating device 31 is connected to the guide plate 42 of the guide mechanism 40, and the vibration generated by the vibration generating device 31 is transmitted from the guide plate 42 to the polishing unit 10 via the floating mechanism 50.
Due to such vibration from the vibration unit 30, the polishing unit 10 generates vibration in the direction along the surface thereof, and the workpiece can be subjected to vibration polishing by pressing the workpiece against the polishing belt 9.

According to the embodiment described above, the polishing belt 9 is supplied from the storage unit 20 to the polishing unit 10, and in this state, the polishing unit 10 is vibrated by the vibration unit 30, and the workpiece is transferred to the polishing belt 9 by a robot arm or the like. By contacting, deburring by vibration polishing can be performed.
At this time, since the polishing belt 10 is disposed on each of the pair of surfaces in the polishing unit 10, the surface of the workpiece can be polished on one surface and the back surface of the workpiece can be polished on the opposite surface. That is, even when deburring the front and back of the work, it is not necessary to turn the work upside down and the deburring can be performed efficiently.

  Further, since the polishing belt 9 can be sequentially updated by the supply unit (supply reels 21A and 21B) and the recovery unit (collection reels 21C and 21D) of the storage unit 20, good polishing performance can always be obtained. In particular, since the polishing belts 9 are in a pair of two systems, and the fresh polishing belt 9 can be supplied to one surface of the polishing unit 10, good polishing performance can always be obtained on any surface. At this time, the polishing belt 9 passes through the inside of the polishing unit 10, that is, between the pair of holding plates 11 (between the inner surfaces facing each other) as a fresh polishing belt, and returns along the outer surface of the polishing unit 10. 9 is an arrangement in which deburring is performed, so that it is possible to avoid the possibility that the burr and the like attached to the polishing belt 9 between the pair of holding plates 11 interferes with the surroundings to stop the operation, and efficient deburring is achieved. Work can be done.

  Further, in the storage unit 20, replacement of the polishing belt 9 is performed by using supply reels 21 </ b> A and 21 </ b> B around which the fresh polishing belt 9 is wound and recovery reels 21 </ b> C and 21 </ b> D that wind up the recovered polishing belt 9. Handling performance such as transport, storage, etc. can be improved. Further, by using reels of the same standard as the supply reels 21A and 21B and the recovery reels 21C and 21D, the reels can be used sequentially.

In the rolling section 12, since the guide roller 12A that rolls on the polishing belt 9 is used, smooth guide can be performed even when the polishing belt 9 is largely folded back.
In the introduction part 13, since the end part itself of the holding plate 11 is used as a guide, the polishing belt 9 fed inward can be made to follow the holding plate 11 with a simple structure.
In the clamp 14 serving as the delivery portion, the polishing belt 9 is pressed against the holding plate 11 using the detachable holding member 14A, so that stability during polishing can be improved.

Since the cushioning material 11B is stretched on the outer surface of the holding plate 11 that is outside the polishing unit 10, the polishing belt 9 is slightly depressed when the work is brought into contact with the surface of the polishing belt 9, and the polishing belt 9 and the side of the work are removed. Contact with the edge or the like is sufficiently obtained, and the deburring performance can be enhanced.
Since the floating mechanism 50 that supports the polishing unit 10 is employed, when the workpiece is pressed against the polishing belt 9, the polishing unit 10 appropriately escapes, and the contact pressure of the workpiece against the polishing belt 9 can be maintained substantially constant. For this reason, it is possible to avoid excessive polishing of the workpiece due to excessive contact pressure, to cope with variations in workpiece dimensions, and to perform appropriate deburring with constant contact pressure.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications and the like within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the storage unit 20, it is not essential to use the reels 21 </ b> A to 21 </ b> D having the same standard for the supply unit and the collection unit, and different types of reels may be used. Further, the folded polishing belt 9 may be pulled out in the supply unit instead of the reel, and the polishing belt 9 may be immediately cut and discarded in the collection unit.
Further, all of the drive motors 23A to 23D for driving the reels 21A to 21D are not essential, as long as the polishing belt 9 can be driven so as to be pulled at least from the winding side. However, it is desirable to use all the drive motors 23A to 23D for smooth operation.

In the above-described embodiment, the vibration direction is regulated by the guide mechanism 40 having the guide rail 41. However, the guide mechanism is not limited to this as long as the vibration direction by the vibration unit 30 can be reliably regulated, and the guide mechanism is a simple sliding plate or the like. May be.
In the above-described embodiment, the polishing unit 10 is floatingly supported by the floating mechanism 50. However, the floating support may be omitted when the pressure regulation performance of the cushion material 11B is high.
In the floating mechanism 50, the urging means is not limited to the cords 56 and 57 but may be a coil spring or the like, or may utilize magnetic force or the like. Alternatively, an elastic body may be used for the portion that supports the holding plate 11 to allow escape from contact with the workpiece.

  In the above-described embodiment, the cushion material 11B is stretched on the holding plate 11. However, the holding plate 11 itself may be formed of a cushioning elastic body, and the polishing belt 9 is appropriately recessed by contact with the workpiece. I can do it.

DESCRIPTION OF SYMBOLS 1 ... Deburring apparatus 2 ... Base 3 ... Front frame 4 ... Rear frame 9 ... Polishing belt 10 ... Polishing part 11 ... Holding plate 11B ... Cushion material 12 ... Turning part 12A ... Guide roller 13 ... Introducing part 14 ... In sending part A certain clamp 14A ... restraining member 14B ... drive source 20 ... storage part 21A, 21B ... supply reel 21C, 21D as supply part ... recovery reel 22A-22D as recovery part ... guide roller 23A-23D ... drive motor 30 ... vibration Part 31: Vibration generator 40 ... Guide mechanism 41 ... Guide rail 42 ... Guide plate 50 ... Floating mechanism 51 ... Floating rail 52 ... Floating plate

Claims (4)

A polishing portion having a flat plate shape and a polishing belt disposed on each of a pair of surfaces, a vibration portion that vibrates the polishing portion in a direction along the surface, and between the polishing portion and the vibration portion A storage unit that is installed and supplies the polishing belt to the polishing unit and collects the polishing belt from the polishing unit;
The storage unit includes a supply unit that supplies the polishing belt to each surface of the polishing unit, and a collection unit that collects the polishing belt from each surface of the polishing unit,
The polishing unit is arranged in parallel at a predetermined interval, a pair of holding plates whose inner surfaces face each other and whose outer surfaces face outward, and a turning unit installed on the opposite side of the vibrating plate of the holding plate And an introduction portion that is installed on the vibration plate side of the holding plate and into which the polishing belt is introduced from the supply portion, and is installed on the vibration plate portion side of the holding plate and is connected to the recovery portion to the polishing belt And a sending part for sending
The pair of polishing belts are supplied from the supply unit to the introduction unit and are sent along the holding plate, are rotated by the turning unit and are returned along the holding plate, and are sent from the delivery unit to the recovery unit. The deburring device is arranged so as to be collected by the burrs. In the deburring apparatus according to claim 1,
The introduction part is installed on the inner surface side of the vibration plate side of the holding plate,
The delivery part is installed on the outer surface side of the excitation part side of the holding plate,
The supply unit is installed closer to the excitation unit than the collection unit,
The pair of polishing belts are introduced from the supply unit to the introduction unit, sent through the inner surface side of the holding plate, are rotated by the turning unit, and are returned along the outer surface side of the holding plate, The deburring device is arranged so as to be sent out from the sending unit and to be collected in the collecting unit. In the deburring apparatus according to claim 1 or 2,
A deburring apparatus, wherein a cushioning material is stretched on an outer surface of the holding plate that is outside the polishing portion. In the deburring apparatus according to any one of claims 1 to 3,
A floating mechanism that supports the polishing unit, the floating mechanism biasing the polishing unit to both sides in the thickness direction; a support that supports the polishing unit so as to be displaceable in the thickness direction of the holding plate; A deburring device comprising: a pair of urging bodies, wherein the pair of urging bodies is adjusted to an urging force that holds the polishing portion at substantially the center of a displacement range of the support body.

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