JPH08336744A - Automatic chamfering device - Google Patents

Abstract

PURPOSE: To automatically chamfer the whole circumference of a workpiece without changing posture of a workpiece. CONSTITUTION: A saddle 74 is arranged above a small member 12 fixed and held by a holding device 121 in such a manner as to be movable in the longitudinal direction and lateral direction of the member 12. A spindle head 80 is arranged on a rotating shaft 78 pivotally supported by the saddle 74 in such a manner as to be capable of sliding. A cutting tool 82 is attachably and detachably installed to a main spindle supported by the spindle head 80 in such a manner as to be replaceable. A cylinder 92 is arranged on a support plate 91 rotatably arranged on the rotating shaft 78 in such a manner as to be horizontally rockable. A piston rod 92a of the cylinder 92 is connected to a lever 93 arranged on the rotating shaft 78 in such a manner as to be integrally rotatable. The support plate 91 is unmovably positioned by a positioning pin 94 arranged on the saddle 74. A spur gear 96 rotated by a motor 95 arranged on the saddle 74 is geared with a spur gear 96 arranged on and fixed to the rotating shaft 78.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel chamfering device capable of automatically chamfering the edges of small reinforcing members arranged on structural members such as box girders and plate girders. It is a thing.

[0002]

2. Description of the Related Art For example, a large structural material such as a box girder or a plate girder used for a long structure such as a bridge is a plate-shaped stiffener material or splice material for the purpose of improving the strength and rigidity of the structural material. It is generally practiced to arrange a large number of small members (workpieces) such as. If the edge of this small member is at a right angle, there is a danger in handling and there is a problem in terms of strength due to lack of corners, and it is necessary to chamfer the edge. There is. In addition, structural materials used in the Gulf are subjected to special coating or vinyl coating to prevent salt damage.
In order to prevent the paint from peeling off, it is required that the edge portion of the small member is rounded so as to have a required roundness. In addition, since "rounding" is also generally called "R chamfering", "chamfering" is used in this specification to mean "rounding".

The work of chamfering the small member generally depends on a manual work performed by an operator using a grinder or the like. For this reason, there has been a problem that the production efficiency cannot be improved, and moreover, the metal powder is scattered to handle the grinder, which is dangerous. Further, the number of small members used for the structural material is extremely large, and the chamfering process for all the small members has been a drawback of compelling workers to perform heavy labor. In addition, there are various sizes and shapes of small parts, and the parts that require chamfering differ depending on the part to be used. Thus, chamfering is suitable for small parts with different conditions for each type. Processing was extremely complicated.

Therefore, as one means for dealing with the above-mentioned problem, a belt sander is arranged so as to be inclined with respect to the transfer line of the small member, and the belt sander is transferred while abutting the edge portion of the small member. It has been proposed to automatically chamfer the edges of the small article. According to this device, the worker can be freed from work that involves heavy labor and danger, and the production efficiency can be improved.

[0005]

It is pointed out that the above-mentioned apparatus using the belt sander has a short use life of the belt sander and a high running cost. Further, it is difficult to carry out chamfering with a belt sander while transporting small members at high speed, and the production efficiency is improved as compared with manual work, but it is not sufficiently satisfactory. Furthermore, if the small member has undulations, bends, etc., or if its corners are formed obliquely, the chamfering work will not be performed reliably at that part, and the chamfering work will be performed manually by the worker in the subsequent process. There was a problem that needed.

Further, in the above-mentioned apparatus, since the chamfering processing of the edge portion along the transfer direction of the small member is performed, the chamfering processing of the end edge portion in the direction intersecting the transfer direction of the small member is required. It is necessary to feed the small member into the apparatus again with the horizontal posture changed by 90 degrees. That is,
Since it is not possible to chamfer the entire circumference of a small member at once,
There was a problem that the number of work steps increased and the production efficiency could not be improved.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned various problems.
SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic chamfering device capable of automatically chamfering the edge of the entire circumference of the workpiece without changing the posture of the workpiece. And

[0008]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and to achieve a desired object, the present invention is an automatic chamfering device for chamfering an edge portion of a workpiece. A saddle disposed above a holding device capable of fixing and holding a material in a horizontal state, movably arranged vertically and horizontally with respect to a horizontal plane, a vertical rotation shaft pivotally supported by the saddle, and A main spindle head rotatably provided at a position radially offset from the axis of the rotary shaft and rotatably driven by a motor and integrally rotatable with the main spindle. A cutting tool that is disposed and that can cut the edge of the workpiece that is fixedly held by the holding device, and rotation that is disposed on the saddle and that is capable of positioning and rotating the rotation shaft at each required angle. Means and is rotatably supported with respect to the rotating shaft, The spindle head is oscillated by urging the rotary shaft to rotate in a predetermined direction while being disposed on a support member that is positioned and fixed by the position fixing means arranged on the saddle. Urging means for moving the cutting tool into contact with the edge of the workpiece, and rotating the rotating shaft by the rotating means according to the position of the edge of the workpiece to be processed. The spindle head is made to face the position where the cutting tool can be brought into contact with the edge portion by the biasing means.

[0009]

EXAMPLES Next, regarding the automatic chamfering apparatus according to the present invention,
A preferred embodiment will be described below with reference to the accompanying drawings. An example will be described in which the automatic chamfering device according to the embodiment is incorporated into an automatic chamfering system including a carry-in device, a deburring device, a material detection device, a reversing device, and a carry-out device.

(About the entire structure of the automatic chamfering system)
FIG. 1 is a plan view showing the entire automatic chamfering system according to the embodiment, and FIG. 2 is a side view showing the entire automatic chamfering system according to the embodiment. The illustrated automatic chamfering system 10
The conveyor 13 configured by arranging the first conveyor 13A, the second conveyor 13B, the third conveyor 13C, and the fourth conveyor 13D in series forms a processing line for the small member 12 and chamfers the line. A process section is provided. The system 10 includes a carry-in device 14 that selects the small members 12 placed on the carry-in pallet 11 in a required pattern and transfers them to the first conveyor 13A, and a burr of the small members 12 transferred by the first conveyor 13A. Deburring device 15 for removing the debris, a material detecting device 17 for confirming the shape of the small member 12 transferred by the second conveyor 13B through the deburring device 15, and a chamfer provided downstream of the material detecting device 17. The automatic chamfering device 19 arranged in the process section (arrangement region of the third conveyor 13C), the reversing device 20 for reversing the small member 12 sent from the automatic chamfering device 180 by 180 degrees, and the fourth reversing device 20 through the reversing device 20. Small article member 12 transferred to the downstream side by the conveyor 13D
Is basically configured from a carry-out device 23 that transfers the paper to the carry-out pallet 22 in a required pattern. The conveyor 13 is a roller conveyor, and the first to fourth conveyors 13A, 13B, 13C and 13D are independently driven and driven.

(Regarding Carry-In Device) At the take-out position of the small member 12 adjacent to the first conveyor 13A in the conveyor 13, three carry-in pallets 11 are arranged in parallel. Small members 12 of various sizes and shapes are placed on each pallet 11 in a required pattern (see FIG. 6), and these small members 12 are appropriately selected by the carry-in device 14 to be first
It is configured to be transferred to the conveyor 13A. That is, a plurality of columns 24 are erected around the first conveyor 13A and the three loading pallets 11 and the conveyor 13
A cross beam 25 is installed between the upper ends of the front and rear columns 24, 24 aligned in a direction intersecting the material transfer direction (see FIG. 4). Guide rails 2 on both cross girders 25, 25
6 are respectively provided, and both guide rails 2 are provided as shown in FIG.
A carriage 27 is movably mounted between 6 and 26. A rotary shaft 28 extending in the direction in which the guide rails 26, 26 are separated from each other is rotatably supported by the carriage 27.
The pinions 29 arranged at the both ends of the shaft 8 correspond to the corresponding cross girders 2.
5 is configured to mesh with the rack 30 disposed in the rack 5. Further, a drive motor 31 is disposed on the carriage 27, and the rotation shaft 28 is rotated in the forward and reverse directions by the motor 31, so that the carriage 27 is moved to each loading pallet 1 as shown in FIG.
It moves between the upper part of 1 and the upper part of the first conveyor 13A.

The carriage 27 includes a plurality of guide rods 3.
A holding body 33 which is horizontally supported via 2 is vertically movably provided vertically, and the holding body 33 is configured to move up and down by forward and reverse biasing of a cylinder 34 arranged in an inverted state on the carriage 27. Has been done. On the lower surface of the holding body 33, there are two rows in the width direction (moving direction of the carriage 27) and the length direction (guide rail 2
A total of twelve electromagnets 35 in six rows are vertically installed in the direction of (6, 26). The electromagnets 35 are provided on the loading pallet 11
ON / OFF control is individually performed according to the size, shape, etc. of the small member 12 placed on the selected small member 12
It is set to attract only the magnetic force.

The holder 33 is aligned in the width direction 2
A sensor holder 36 is arranged adjacent to the individual electromagnets 35, 35 so as to extend in the width direction, and a material sensor 37 is arranged in the holder 36. In this material sensor 37, when the holding member 33 is lowered by urging the cylinder 34, the detection piece 37 a arranged in the sensor holder 36 is attached to the small member 12.
It is set so that the corresponding electromagnet 35 is turned on when it comes into contact with. The reference end of the holder 33 (see FIG.
In the sensor holder 36 corresponding to the electromagnets 35, 35 located at the right end in FIG. 5, as shown in FIG. 5, five material sensors 37 are arranged at a required interval in the width direction. That is, the width dimension of the small member 12 placed on the carry-in pallet 11 is detected by the five material sensors 37, and the small member 1 is arranged by using one row of electromagnet groups aligned in the length direction.
It functions to select whether to magnetically attract 2 or to magnetically attract the small member 12 using two rows of electromagnet groups.

The loading pallet 11 is, for example, as shown in FIG.
As shown in (a), the first small member 12 is placed on the first
Pattern, a second pattern in which the small members 12 are placed in two rows in the width direction as shown in FIG. 6 (b), and two rows in each of the width direction and the length direction as shown in FIG. 6 (c). And the accessory member 12
There is a third pattern on which is placed. In any case, only the electromagnet 35 corresponding to the selected small article member 12 is turned on, and the other small article members 12 are not magnetically attracted. The order of the small articles 12 taken out from the carry-in pallet 11 is set by inputting them in advance to a control device (not shown).

(Regarding Deburring Device) A deburring device 15 is provided between the first conveyor 13A and the second conveyor 13B to remove burrs generated when a hole is formed in the small member 12 or when the small member 12 is cut. It is arranged. The deburring device 15 is
As shown in FIG. 2, two conventionally known belt sanders are arranged in series in the material transfer direction. The upstream belt sander 38 removes burrs on the lower surface side of the small article member 12, and The downstream belt sander 38 is configured to remove burrs on the upper surface side of the small member 12. In addition, each belt sander 38 is used to attach the small member 12
When removing the burr, the member 12 is pressed by the air pressure toward the belt sander 38 side.

(Regarding Material Detecting Device) A material detecting device 17 for confirming the shape of the small member 12 from which burrs have been removed is disposed downstream of the second conveyor 13B. The material detecting device 17 is set so that a CCD camera reads the state in which the small object member 12 transferred by the second conveyor 13B is irradiated with laser light, and inputs this to the control device.
Then, the shape of the small member 12 is accurately confirmed by three-dimensionally image-processing the small member 12 by the control device.
Based on this detection result, the automatic chamfering device 19 arranged in the chamfering process section is operated and controlled.

An ink jet printer 39 is arranged on the upstream side of the material detecting device 17 so that the index erased when the burr is removed by the deburring device 15 can be newly printed. The inkjet printer 39 is not an essential requirement, and the printer 39 can be omitted.

(Regarding Positioning Device) In the chamfering process section provided on the processing line, the small member 12 transferred from the second conveyor 13B to the third conveyor 13C and transferred to a predetermined position by the conveyor 13C is fixed. First positioning device 40 and second positioning device 4 for positioning in position
1 and 1 are provided.

As shown in FIG. 7, the first positioning device 40 faces the restriction plate 42 arranged on one side frame 16 of the third conveyor 13C and the restriction plate 42 with the third conveyor 13C interposed therebetween. And pusher 43.
The pusher 43 is a pair of bases 44, which are arranged outside the other side frame 16 of the third conveyor 13C, and which are movable in the forward and backward directions so as to be separated from each other in the material transfer direction and above the third conveyor 13C toward the regulation plate 42. Of the guide rods 45, 45, and a holding plate 46 is provided at the tip of the guide rods 45, 45 pointing toward the regulating plate 42. Further, between the guide rods 45, 45 on the base 44, the rod 45
A cylinder 47 is disposed in parallel with the cylinder 47, and its piston rod is connected to the holding plate 46. Then, by urging the cylinder 47, the holding plate 46 retracted laterally from above the third conveyor 13C is brought close to the regulation plate 42, and the small article member 12 located on the conveyor 13C.
The widthwise positioning is performed by contacting the side surface of the control plate 42 with the regulation plate 42. The cylinder 47
Is set such that the pressing plate 46 is retracted from above the third conveyor 13C by being reversely biased when an appropriate detection means (not shown) detects that the small member 12 is in contact with the regulation plate 42. Has been done.

As shown in FIG. 8, the second positioning device 41 is composed of a stopper 48 arranged downstream of the third conveyor 13C and a pushing device 49 arranged above the third conveyor 13C. It The stopper 48 is connected to a piston rod that is directed vertically above a cylinder 50 that is vertically arranged below the third conveyor 13C, and can be retracted from between adjacent rollers of the conveyor 13C by the forward and reverse biasing of the cylinder 50. Has been done.

A plurality of columns 51 are erected on both sides of the third conveyor 13C in the width direction so as to be spaced apart from each other in the material transfer direction. Inside the plurality of columns 51 aligned in the transfer direction, a third column 51 is provided. First guide rail 5 parallel to conveyor 13C
2 are arranged so as to extend a required length in the material transfer direction. A carriage 53 is movably mounted between the pair of first guide rails 52, 52 facing each other across the third conveyor 13C. In this carriage 53, as shown in FIG. 7, a pinion 55 rotated by a forward / reverse drive motor 54 arranged in the carriage 53 meshes with a rack 56 arranged in one of the first guide rails 52. There is. Therefore, by driving the drive motor 54 forward and backward, the carriage 53 reciprocates along the first guide rails 52, 52.

As shown in FIG. 7, a support member 58 is disposed below the carriage 53 at a position biased to the side where the restriction plate 42 is disposed, with a pair of brackets 57, 57 interposed therebetween.
A cylinder 59 is arranged above the support member 58 in parallel with the material transfer direction. A claw member 61 is integrally rotatably arranged on a shaft 60 pivotally supported by the support member 58, and a lever 62 is arranged on the shaft 60. The piston rod 59 of the cylinder 59 is attached to the protruding end of the lever 62.
a is connected and the claw member 61 is rotated between the operating position and the retracted position by urging the cylinder 59 forward and backward. The claw member 61 can come into contact with the rear end of the small member 12 facing the third conveyor 13C when facing the operating position, and the small member 12 facing the third conveyor 13C when facing the retracted position.
It is set not to interfere with. That is, by causing the stopper 48 to project above the third conveyor 13C and moving the carriage 53 toward the downstream side in the material transfer direction with the pawl member 61 facing the operating position, the third conveyor 13C is moved upward. The front end of the small member 12 can be brought into contact with the stopper 48 to perform positioning in the length direction. The pushing device 49 is configured so that when the appropriate detection means (not shown) detects that the small member 12 has come into contact with the stopper 48, the pawl member 6 is provided.
1 is moved to the retracted position, and the carriage 53 is set to the upstream side to a position where it does not interfere with the automatic chamfering device 19.

(Holding device) The third conveyor 13
Below C, there is a holding device 121 for immobilizing and holding the small object member 12 positioned at a fixed position by the first positioning device 40 and the second positioning device 41 in a state capable of being chamfered by the automatic chamfering device 19. It is arranged. That is, the third conveyor 13C and the conveyor 13C
As shown in FIG. 8, the movable table 65 is horizontally positioned via a pair of link mechanisms 64, 64 that are spaced apart from the fixed table 63 disposed below C in the material transfer direction of the table 63. It is supported so that it can move up and down while holding. The pair of link mechanisms 64, 64 are connected to a cylinder 66 arranged on the fixed table 63, and are configured to operate synchronously by urging the cylinder 66 forward and reverse. Therefore, by urging the cylinder 66 to operate the link mechanisms 64, 64, the movable table 65 moves up and down while maintaining the horizontal posture. Electromagnets 67 are erected on the upper surface of the movable table 65 at positions corresponding to the respective rollers of the third conveyor 13C. By moving the movable table 65 up and down, the electromagnets 67 face below the conveyor 13C. The retracted position and the fixed position protruding above the conveyor 13C are positioned. Then, by positioning the electromagnet 67 at the fixed position, the small member 12 is magnetically adsorbed and immovably held in a state of being lifted upward from the third conveyor 13C.

(Regarding the automatic chamfering device) A girder material 68 is installed between the upper ends of a plurality of columns 51 on which the first guide rails 52 are arranged, and a second guide rail 69 is provided on the upper surface of the girder material 68 for material transfer. It is arranged parallel to the direction. The second guide rails 69 facing each other with the third conveyor 13C interposed therebetween,
A girder 70 is movably mounted between 69 and a pinion 72 rotated by a motor 71 arranged on the girder 70 meshes with a rack 73 arranged on one of the girder members 68. Therefore, by driving the motor 71 forward and backward, the girder 70 reciprocates along the second guide rails 69, 69.

As shown in FIG. 7, on the rear surface of the girder 70, which faces the upstream side in the material transfer direction, a pair of guide rails 73, 73 are vertically spaced apart by a predetermined distance so as to be parallel to each other along the longitudinal direction of the girder 70. The guide rails 73, 7 are provided.
A saddle 74 is movably arranged on the shaft 3. On the rear surface of the girder 70, a screw shaft 75 is rotatably arranged in parallel between the guide rails 73, 73.
Is rotatably driven by a motor 76 disposed in the girder 70 and capable of normal and reverse rotation. The screw shaft 75 is
The saddle 74 is screwed into a nut 77 arranged and fixed to the saddle 74. Therefore, by rotating the screw shaft 75 in the forward and reverse directions by the motor 76, the saddle 74 is moved to the guide rail 73,
It reciprocates along 73. That is, the saddle 74 is the small member 12 that is immobilized and held by the holding device 121.
The horizontal (top) and the top (horizontal) of the
It is configured to be movable in the horizontal direction.

A pivot shaft 78 extending vertically is rotatably supported on the saddle 74, as shown in FIG.
As shown in FIG. 9, a guide surface 79 extending in the vertical direction is formed on the lower portion of the rotary shaft 78 depending from the saddle 74, and a spindle head 80 is slidably disposed on the guide surface 79. ing. The spindle head 80 is rotatably provided with a spindle 81 extending in the vertical direction, and a cutting tool 82 is detachably attached to an end portion of the spindle 81 projecting downward from the spindle head 80. Further, a support plate 83 is arranged at a position facing the upper part of the main shaft head 80 on the rotary shaft 78, and a motor 84 connected to the main shaft 81 is arranged on the support plate 83. Further, the hydraulic cylinder 85 is arranged upside down on the support plate 83, and its piston rod 85a is connected to the spindle head 80.
Connected to Therefore, by urging the hydraulic cylinder 85 in the forward and reverse directions, the spindle head 80 reciprocates in the vertical direction along the guide surface 79. A copying roller 87 is disposed on the spindle head 80 via a bracket 86, and the copying roller 87 is provided on the upper surface (front surface or back surface) of the small article member 12 when the spindle head 80 is biased downward by the hydraulic cylinder 85. It comes to abut. The hydraulic cylinder 85 is hydraulically controlled so that the chamfering process of the small member 12 by the cutting tool 82 causes the copying roller 87 to always contact the upper surface of the small member 12 at a required pressure. Further, the lower end portion of the copying roller 87 is the cutting tool 8 mounted on the spindle 81.
It is positioned so as to substantially coincide with the cutting portion of No. 2.

As shown in FIG. 9, a plurality of cutting tips 88 are arranged and fixed at the required intervals in the circumferential direction on the outer periphery of the lower part of the main body 82a of the cutting tool 82 arranged on the main shaft 81.
The cutting tip 88 chamfers the upper edge of the small member 12. The cutting tip 8
By changing the shape of 8, the chamfering process or the R chamfering process can be selectively applied to the edge portion of the small article member 12. A support shaft 89 is rotatably inserted into and supported by a through hole 82b formed along the axis of the tool body 82a. A copying roller 90 is integrally rotatably arranged at an end portion of the support shaft 89 that projects downward from the tool main body 82a, and an outer peripheral end of the copying roller 90 has a cutting tip 8a.
It is set so as to substantially coincide with the cutting portion of No. 8. And
The copying roller 90 is set so as to come into contact with the side surface of the small article member 12 when the main spindle head 80 is biased in the direction of approaching the small article member 12.

A support plate 91 is rotatably disposed on the upper portion of the rotary shaft 78 protruding upward from the saddle 74, and a cylinder 92 horizontally swings on the support plate 91. It is movably arranged. The piston rod 92a of the cylinder 92 is integrally and rotatably arranged and fixed to the shaft end of the rotating shaft 78, and is connected to the end of a lever 93 extending in the radial direction. Further, the support plate 91 is positioned immovably by a positioning pin 94 arranged on the saddle 74 at a position where the support plate 91 is horizontally displaced by 90 degrees with respect to the saddle 74. Therefore, if the cylinder 92 is urged forward and backward with the support plate 91 positioned, the rotation shaft 78 rotates with respect to the support plate 91. Here, the spindle head 80
Is radially displaced from the axis of the rotating shaft 78, the spindle head 80 swings around the axis of the rotating shaft 78 with the rotation of the rotating shaft 78. Cutting tool 82
Is brought into contact with the edge of the small member 12. The cutting tool 82 is set so as to always contact the end edge portion of the small object member 12 at a required pressure by urging the piston rod 92a of the cylinder 92 in the extending direction. The cylinder 92 is biased and controlled so that the chamfering process of the small member 12 by the cutting tool 82 causes the copying roller 90 to always contact the side surface of the small member 12 with a required pressure.

Since the urging direction of the cutting tool 82 by the cylinder 92 is one direction, in the same posture, the small member 1
Only the edge of one of the four sides in 2 can be chamfered. Therefore, the automatic chamfering device 1 of the embodiment
9, the positions of the spindle head 80 and the cylinder 92 are set to 9
By rotatably displacing in units of 0 degree, the chamfering process of the entire circumference of the small object member 12 can be performed (FIG. 1).
0). That is, a motor 95 is arranged on the saddle 74, and a spur gear 96 rotatably driven by the motor 95.
, Meshes with a spur gear 97 arranged and fixed so as to rotate integrally with the rotating shaft 78. The motor 95 is rotationally controlled so as to rotate the rotating shaft 78 in units of 90 degrees,
As shown in FIG. 10, the cylinder 92 and the spindle head 80 are made to face the positions corresponding to the end edges of each side of the small article member 12. The positioning pin 94 arranged on the saddle 74 is configured to move between a fixed position and a release position by the urging of a cylinder 98, and when the rotation shaft 78 is rotated by the motor 95, Support plate 91
The positioning of the support plate 91,
It is set so as to be allowed to rotate integrally with 8. When the cutting tool 82 is urged by the cylinder 92 to come into contact with the end edge of the small article member 12, the spur gears 9
It is configured to allow the rotation of the rotation shaft 78 when the gears 6, 97 are in mesh with each other.

(Reversing device) As shown in FIG. 1, between the third conveyor 13C and the fourth conveyor 13D, a small member whose front side edge is chamfered by the automatic chamfering device 19. A reversing device 20 is arranged so that the top and bottom of 12 are reversed and the back surface is directed upward. As shown in FIG. 11 and FIG. 12, this reversing device 20 is provided with a pair of rotating rings 99, 99 rotatably spaced apart from each other in the material transfer direction, and the first reversing conveyor 1 is provided between both rings 99, 99.
00 and the second reversing conveyor 101 are arranged vertically facing each other with a required space therebetween. Each of the reversing conveyors 100, 101 is provided with an attached motor 102, 1 capable of reversing.
By 03, they are individually driven to travel upstream or downstream in the material transfer direction. The first reversing conveyor 1
00 and the second reversing conveyor 101 include a rotating ring 9
When 9,99 is rotated 180 degrees about the axis line along the transfer direction of the small member 12, the conveyor 10 facing downwards
0, 101 transfer surface is the third conveyor 13C and the fourth
It is set to face the same level as the material transfer level of the conveyor 13D.

The rotating ring 99 has flanges 99a, 99a extending outward in the radial direction at both axial ends thereof, and an outer peripheral surface facing between the flanges 99a, 99a sandwiches the ring 99 for material transfer. It is slidably supported by guide rollers 104, 104 rotatably arranged on both sides intersecting the direction. Further, the guide rollers 104, 104 arranged on one side of both the rotary rings 99, 99 are integrally rotatably arranged on the common drive shaft 105.
Reference numeral 05 is connected to a motor 106 capable of reciprocating. A chain 107 is wound around the outer periphery of one flange 99a of each rotary ring 99, and a sprocket 108 engaging with the chain 107 is integrally rotatably arranged at a position corresponding to each chain 107 of the drive shaft 105. To be done. Therefore, by rotating the drive shaft 105 in the forward and reverse directions by the motor 106, both rotating rings 99, 99 rotate under the engagement action of the sprocket 108 and the chain 107. As shown in FIG. 13, the motor 106 rotates the rotating rings 99, 99 counterclockwise by 180 degrees from the state in which the first reversing conveyor 100 faces downward and the second reversing conveyor 101 faces upward, so that the second reversing is performed. It is set so that the first reversing conveyor 100 is again exposed to the lower side by moving the conveyor 101 to the lower side and rotating the rotary rings 99, 99 clockwise by 180 degrees from this state.

As shown in FIG. 13, the first reversing conveyor 100 is slidably mounted on a frame member 109 disposed inside both rotating rings 99, 99, and the ring 99, 99
It is configured to move closer to and away from the opposing second reversing conveyor 101 by the urging force of the cylinder 110 arranged at 99. Then, the two-side-up conveyor 100, 10
When the small article member 12 enters between the first and second conveyors 101 and 101, the small article member 12 is placed between the two conveyors 100 and 101 by bringing the first inversion conveyor 100 close to the second inversion conveyor 101.
The small object member 12 is inverted by sandwiching, and rotating the rotating rings 99, 99 in this state.

As shown in FIG. 13, each rotating ring 99 is
A cylinder 112 is arranged upside down on a frame body 111 surrounding the cylinder 112, and a piston rod 112 of the cylinder 112 is arranged.
a is connected to the frame body 111 via guide rods 113, 113 to a brake shoe 114 that is arranged so as to be able to move up and down (see FIG. 14). That is, by urging the cylinder 112 to extend the piston rod 112a,
The brake shoe 114 is configured to abut the outer peripheral surface of the rotating ring 99 to apply braking to the ring 99. In FIG. 13, reference numeral 115 indicates a driven roller that holds the rotating ring 99 from both sides in the axial direction and guides the rotation.

(About unloading device) Three unloading pallets 22 are arranged in parallel at the loading position of the small article members 12 adjacent to the fourth conveyor 13D in the processing line,
The small member 12 transferred to the fourth conveyor 13D is configured to be transferred by the transfer device 23 to each transfer pallet 22 in a required pattern. The carry-out device 23
Since the configuration is the same as the configuration of the carry-in device 14 described above, the same members are denoted by the same reference numerals and detailed description thereof will be omitted.

[0035]

Operation of the Embodiment Next, the operation of the automatic chamfering apparatus according to the embodiment thus constructed will be described together with the overall operation of the automatic chamfering system incorporating the same.

Prior to chamfering the small member 12,
Small members 12 of various sizes and shapes are placed on the three loading pallets 11 as shown in FIG. 6, for example. It should be noted that the small member 12 is formed by stacking a plurality of members having the same size and shape. In addition, the operator has an operation panel connected to the control device.
(Not shown), for example, the following information is input. As the small member 12, there are a splice material that requires chamfering of the edge portions on the front and back sides, and a stiffener material that chamfers only the edge portion on the front surface side. Therefore, the type of the material is specified. Also, the placement pattern of the small articles 12 placed on the loading pallet 11 and each pallet 1
Specify the position of 1. In addition, the loading pattern of the small object member 12 that has been chamfered to the unloading pallet 22 is designated. Further, the processing order data is designated.

When the system 10 is started, the drive motor 31 of the carry-in device 14 is driven based on the information input to the control device, and the carriage 27 is moved above the designated carry-in pallet 11. Next, trolley 27
The cylinders 34 arranged in the column are energized, and the electromagnets 35 are lowered together with the holding body 33, and the rows are aligned (in the width direction).
Detection piece 3 disposed at a position corresponding to the electromagnets 35, 35 of
Only the electromagnet 35 at the position where 7a is in contact with the small member 12 is turned on. Thereby, the target small member 12
Only the magnetic force is attracted to the electromagnet 35. The cylinder 34
In the state in which the small member 12 is lifted by reversely urging, the drive motor 31 is driven to move the carriage 27 above the first conveyor 13A. Then, the cylinder 34 is urged again to place the small article member 12 on the first conveyor 13A, and then the electromagnet 35 is turned off to transfer the small article member 12 to the first conveyor 13A.

The small member 12 transferred to the downstream side by the first conveyor 13A passes through the two belt sanders 38 in the deburring device 15 to remove burrs on the front surface (upper surface) and the back surface (lower surface). To be removed. Further, the small object member 12 that has passed through the deburring device 15 and is transferred to the downstream side by the second conveyor 13B is subjected to printing by the inkjet printer 39 as necessary, and
The material detection device 17 confirms the shape.
Then, the small article member 1 confirmed by the material detection device 17
The operation of the automatic chamfering device 19 on the downstream side is controlled based on the shape of No. 2.

When the small member 12 transferred from the second conveyor 13B to the third conveyor 13C arrives between the regulating plate 42 and the pusher 43 of the first positioner 40, the third conveyor 13C is stopped. Controlled. Then, the cylinder 47 of the pusher 43 is urged in the direction in which the piston rod is extended, and the pressing plate 46 is moved to the regulating plate 4.
By approaching 2, the small article member 12 on the third conveyor 13C is pushed by the holding plate 46 and pressed against the regulation plate 59. As a result, the small member 12 is positioned in the width direction. Further, when the cylinder 47 of the pusher 43 is biased in the reverse direction to retract the pressing plate 46 from the upper side of the third conveyor 13C to the outside, the stopper 48 of the second positioning device 41 shown in FIG. Is thus projected above the third conveyor 13C. Next, the cylinder 59 of the pushing device 49 is urged so that the claw member 61 facing the retracted position faces the operating position so that the claw member 61 can contact the rear end of the small member 12. Further, the drive motor 54 disposed on the carriage 53 is driven to move the carriage 53 toward the downstream side in the material transfer direction, whereby the small article member 12 on the third conveyor 13C is pushed by the claw member 61, and The front end contacts the stopper 48. Thereby, the accessory member 1
Positioning in the longitudinal direction of 2 is performed. Note that the pushing device 49
When the positioning of the small member 12 is completed, the claw member 61
After moving to the retracted position, it moves upstream to a position where it does not interfere with the automatic chamfering device 19.

Small member 12 on the third conveyor 13C
When the positioning is performed, the cylinder 66 of the holding device 121 is urged to move the movable table 65 upward through the pair of link mechanisms 64. Movable table 6
5, the plurality of electromagnets 67 protruding on the upper surface of the table 65 move from the retracted position facing the lower part of the conveyor 13C to the fixed position protruding upward of the conveyor 13C, and the small objects on the third conveyor 13C. Lift the member 12 upward (see FIG. 8). Further, the electromagnet 67 is excited, and the small article member 12 is held in an immobilized state in which the plurality of electromagnets 67 are magnetically attracted.

The automatic chamfering device 19 includes a holding device 12.
The small article member 1 shown in FIG.
2 is located above one corner A on the downstream side. In this device 19, the hydraulic cylinder 85 is urged to lower the spindle head 80 along the guide surface 79 of the rotary shaft 78 while the cutting tool 82 disposed on the spindle 81 is rotationally driven by the motor 84. Then, the copying roller 87 comes into contact with the surface of the small member 12 as shown in FIG. Further, a cylinder 92 arranged on the support plate 91.
The main spindle head 80 disposed on the rotary shaft 78 is swung in a direction in which it comes into contact with one side 12a of the small member 12 in the width direction. As a result, the copying roller 90 provided on the cutting tool 82 is brought into contact with the side 12a, and the cutting tip 88 of the cutting tool 82 is brought into contact with the front edge portion.

In this state, the motor 71 arranged in the girder 70 is driven, and the girder 70 moves upstream along the second guide rails 69, 69, whereby the surface of the side 12a of the small article member 12 is moved. The side edge portion is cut by a cutting tool 82 and chamfered. The hydraulic cylinder 8 is so arranged that the copying roller 87 and the copying roller 90 are always in contact with the surface and the side surface of the small article member 12.
Since the 5 and the cylinder 92 are controlled, even if the small member 12 has a deformed portion such as a corrugation or a bend, the cutting tool 82 can move according to the displacement of the deformed portion to perform a reliable chamfering process. it can.

When the cutting tool 82 reaches one corner B on the upstream side of the small member 12, the girder 70
Is stopped and the bias of the cylinder 92 is released.
Further, the positioning pin 94 disposed on the saddle 74 is operated by the cylinder 98 to release the positioning of the support plate 91. Next, the motor 95 arranged in the saddle 74 is driven to rotate the rotating shaft 78 by 90 degrees, and the cutting tool 82 is urged by the cylinder 92 to end the upstream side 12b of the small member 12. Be in a position where it can contact the edge. And the positioning pin 9
4, the support plate 91 is positioned in an immobilizing state, and then the cylinder 92 arranged on the support plate 91 is urged to move the copying roller 9 arranged on the cutting tool 82.
0 is brought into contact with the side 12b, and the cutting tip 88 of the cutting tool 82 is brought into contact with the edge portion on the front surface side. In this state,
The motor 76 disposed on the girder 70 is driven, and the saddle 74 is moved along the guide rails 73, 73 of the girder 70 toward the corner C of the small article member 12 to move the side 12 b of the small article member 12. The edge portion on the front surface side is cut by a cutting tool 82 and chamfered.

The cutting tool 82 is moved by the movement of the saddle 74.
When the small member 12 reaches the corner C, the saddle 74
After the rotation is stopped, the rotary shaft 78 is rotated by 90 degrees in the same manner as described above, and the main spindle head 80 is moved to the side 1 of the accessory member 12.
2c is displaced to a posture capable of chamfering. Then, by moving the girder 70 to the downstream side, the cutting tool 82 chamfers the edge portion of the side 12c of the small member 12, and after the cutting tool 82 reaches the corner D, the rotary shaft 78 is rotated again. Is rotated 90 degrees to displace the spindle head 80 into a posture in which the side 12d of the small member 12 can be chamfered. In this state, by moving the saddle 74 toward the corner portion A along the girder 70, chamfering is performed on the edge portion of the side 12d of the small article member 12 on the front surface side.

In this way, each side 12a of the small article member 12,
Every time the chamfering process of 12b, 12c, 12d is performed, the rotary shaft 78 is rotated by 90 degrees, so that the chamfering process of the entire circumference of the small member 12 can be performed by one automatic chamfering device 19. Since the automatic chamfering device 19 is controlled by the data of the shape of the small member 12 confirmed by the material detecting device 17, it is possible to accurately chamfer the four sides. Further, depending on the type of the small member 12, it is possible to skip the side that does not need to be chamfered.

The small member 1 by the automatic chamfering device 19
When the chamfering process on the surface side of 2 is completed, the holding device 1
21 moves the movable table 65 downward to move the small member 12 to the third position.
Place on conveyor 13C. The stopper 48 of the second positioning device 41 descends below the third conveyor 13C when the small member 12 is immobilized and held by the holding device 121. Therefore, by driving the third conveyor 13C, the small article member 12 is transferred to the downstream side,
Both inversion conveyors 100, 10 in the inversion device 20
Supplied during 1. In addition, in the reversing device 20, as shown in FIG.
As shown in, the first reversing conveyor 100 is located on the lower side, and its transfer surface faces the material transfer level of the third conveyor 13C and the fourth conveyor 13D.

The small member 12 is the double-sided conveyor 10.
When a suitable detecting means (not shown) detects that the first reversing conveyor 100 is supplied between 0 and 101, the first reversing conveyor 100 located on the lower side is moved by the cylinder 110 to the second reversing conveyor 10.
1, the small article member 12 is sandwiched by both conveyors 100 and 101. Next, the motor 106 is driven to drive the sprockets 108, 108 and the chains 107, 10.
Under the action of engaging with 7, the rotating rings 99, 99 rotate while being guided by the plurality of guide rollers 104 and the driven rollers 115. Then, when the second reversing conveyor 101 arrives at the lower side, the rotation of the rotating rings 99, 99 stops,
As a result, the back surface of the small member 12 is turned upside down. Also the rotating ring 99,99
When is rotated 180 degrees, the brake shoe 114 is brought into contact with each ring 99 by the cylinder 112 arranged on the frame body 111 to apply the braking.

After the cylinder 110 is biased in the reverse direction to separate the first reversing conveyor 100 from the second reversing conveyor 101, the second reversing conveyor 101 is driven to run in the direction opposite to the material transfer direction to cause the conveyor 101 to move. The mounted small member 12 is transferred to the chamfering process section again. And
In the chamfering process section, positioning, immobilization holding of the small article member 12 and chamfering of the rear edge of the small article member 12 are performed in the same order as described above. When the small member 12 whose chamfering processing has been completed on both front and back sides is sent to the downstream side from the chamfering process section, the second reversing conveyor 101 of the reversing device 20 is driven to run in the material transfer direction, and the small member 12 is moved to the fourth position. Hand it over to the conveyor 13D.

When an appropriate detecting means (not shown) detects that the small article 12 transferred by the fourth conveyor 13D has reached a required take-out position, the conveyor 13D is stopped and controlled. Next, the unloading device 23 is moved to above the fourth conveyor 13D, and the device 23 magnetically adsorbs the small member 12 on the fourth conveyor 13D, and the unloading device faces the loading position for a preset unloading. Transfer to pallet 22.

When chamfering only the edge of the small member 12 on the front surface side, when the small member 12 is sent to the reversing device 20 from the chamfering process section, the device 20 is operated.
The first reversing conveyor 100 located on the lower side is driven to run in the material transfer direction, and transfers the small article member 12 to the fourth conveyor 13D without sending it back to the chamfering process section. Then, the small article member 12 is transferred to the unloading pallet 22 through the unloading device 23 in a required pattern.

[0051]

As described above, according to the automatic chamfering apparatus of the present invention, the position of the cutting tool can be moved in accordance with the position of the edge portion of the workpiece to be chamfered. It is possible to chamfer the edge portion of the entire circumference of the work material in a short time without changing the position or the posture of the work piece. That is, chamfering of the entire circumference of the material to be processed can be performed fully automatically, and production efficiency can be dramatically improved. Further, since the chamfering of the material to be processed is performed by a cutting tool, high speed and extremely high production efficiency can be achieved. Furthermore, since the life of the cutting tool is longer than that of the belt sander, it is possible to keep running costs low.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an automatic chamfering system incorporating an automatic chamfering device according to an embodiment.

FIG. 2 is a schematic side view of an automatic chamfering system according to an embodiment.

FIG. 3 is a side view of the carry-in device.

FIG. 4 is a front view of the carry-in device.

FIG. 5 is a cross-sectional view of an essential part showing a disposition part of a material sensor in the carry-in device.

FIG. 6 is an explanatory diagram showing a pattern of small members placed on a carry-in pallet.

FIG. 7 is a rear view showing a positioning device, a holding device and an automatic chamfering device arranged in the chamfering process section.

FIG. 8 is a partially cutaway side view showing a positioning device, a holding device and an automatic chamfering device arranged in a chamfering process section.

FIG. 9 is a side view of an essential part showing a part of a disposition part of a spindle head in an automatic chamfering device.

FIG. 10 is an operation explanatory diagram when chamfering four sides of the small member by the automatic chamfering device.

FIG. 11 is a plan view of the reversing device.

FIG. 12 is a side view of the reversing device.

FIG. 13 is a rear view showing the reversing device with a part thereof cut away.

FIG. 14 is a side view of an essential part showing the reversing device with a part thereof cut away.

[Explanation of symbols]

 12 Small member 74 Saddle 78 Rotating shaft 80 Spindle head 81 Spindle 82 Cutting tool 84 Motor 91 Support plate 92 Cylinder 94 Positioning pin 121 Holding device

Claims (1)

[Claims] 1. An automatic chamfering device for chamfering an edge portion of a work material (12), the holding device capable of fixing and holding the work material (12) in a horizontal state.
A saddle (74) located above the (121) and movably arranged vertically and horizontally with respect to a horizontal plane, and a vertical rotation shaft (7) rotatably supported by the saddle (74).
8) and a vertical main shaft (81) rotatably disposed at a position radially offset from the axis of the rotating shaft (78) and driven to rotate by a motor (84). Spindle head (80)
And the holding device which is integrally rotatably disposed on the main shaft (81).
A cutting tool (82) capable of cutting the edge of the workpiece (12) fixedly held by (121) and the saddle (74), and the rotating shaft (78) at every required angle. Positioning is possible by means of a rotating means (95) capable of positioning and rotation, and a position fixing means (94) provided on the saddle (74) while being pivotally supported so as to be freely rotatable with respect to the rotating shaft (78). The support member is provided on the fixed support member (91).
By rotating and urging the rotary shaft (78) in a required direction with the (91) positioned and fixed, the spindle head (80) is swung to cut the cutting tool (82) into the workpiece (12). Urging means (92) for abutting against the edge of the rotating shaft (78) by the rotating means (95) according to the position of the edge of the workpiece (12) to be processed. The automatic chamfering device is configured so that the spindle head (80) is faced to a position where the cutting tool (82) can be brought into contact with the end edge by the biasing means (92).