JPH05162053A - Automatic chamfering device - Google Patents

Abstract

PURPOSE:To attain sure chamfering work of a small member at high speed so as to remarkably improve productive efficiency. CONSTITUTION:A pair of pinch rollers 52 with which a member 12 can be pinchedly held are respectively arranged on the upper stream side and the lower stream side of a working part provided on a transfer line for a small member 12. A second saddle 65 provided with a spindle head 68 is elevatably arranged on a first saddle 62 movable in the direction crossing with the transfer line. A horizontal copy roller which can be brought in contact with the side of the small member 12 is arranged on the spindle head 68, and a vertical copy roller 75 which can be brought in contact with the upper face of the member 12 is arranged on the second saddle 65. In the contact condition of both copy rollers 75 with the small member 12, chamfering work on the end edge part of the member 12 is performed by means of a working tool 22 arranged on the spindle head 68.

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 provided with a large number of small plate-shaped members for the purpose of improving the strength and rigidity of the structural material. It is generally done. If the edges of this small member are right-angled, 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 all edges. ing. In addition, structural materials used in the Gulf are subjected to special coating or vinyl coating to prevent salt damage.In this case, the edges of the small parts are Is required to be rounded with the required roundness. In addition, since "rounding" is also generally called "R chamfering", "chamfering" in this specification means "rounding".
Shall be used in the meaning including.

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. Moreover, since the number of small members used for the structural material is extremely large, chamfering all of the small members has been a drawback of compelling workers to perform heavy labor.

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

[0005]

It is pointed out that in the above-mentioned device using the belt sander, the belt sander has a short service life and a high running cost. Further, it is difficult to carry out chamfering with a belt sander while transferring small members at a 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 waviness, bends, etc., or its corners are formed obliquely, the chamfering work is not performed reliably at that part, and the chamfering work by the operator's manual work in the post process. There was a problem that needed.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks inherent in chamfering a material to be processed, and has been proposed in order to solve the problem suitably. It is an object of the present invention to provide a means capable of achieving chamfering and dramatically improving the production efficiency.

[0007]

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 material to be processed. A pair of pinch rollers capable of sandwiching the material from above and below, provided with at least two at a predetermined interval in the material transport direction, and transporting the material to be processed in the required direction by rotating each pair of pinch rollers; A saddle which is arranged to be movable horizontally toward and away from the work material transfer line by a horizontal driving means, and a spindle head which is arranged to be movable up and down on the saddle and is vertically moved by a vertical driving means. And a horizontal copying roller which is disposed integrally with the spindle head, and which is capable of contacting the side surface of the material to be processed transferred by the transfer device when moving horizontally, and is integrally disposed with the spindle head, That rise The upper and capable of abutting vertical profiling rollers of the processed material to be transferred by the transfer device during the movement,
An end of the material to be processed which is rotatably disposed on the spindle head and faces the pair of pinch rollers when the horizontal and vertical copying rollers are brought into contact with the side surface and the upper surface of the material to be processed. A machining tool whose edge is positioned so that it can be cut, and the horizontal copying roller and the vertical copying roller are controlled by the machining tool so as to always contact the material to be processed. It is characterized in that the portion is configured to be chamfered.

[0008]

EXAMPLE Next, regarding the automatic chamfering apparatus according to the present invention,
A preferred embodiment will be described below with reference to the accompanying drawings. FIG. 1 is a vertical sectional front view showing an automatic chamfering apparatus according to a preferred first embodiment of the present invention, and FIG. 2 is a plan view of the automatic chamfering apparatus according to the first embodiment. For convenience of explanation, "front and rear" refers to the direction of the small article member with respect to the table, and "upstream" and "downstream" refers to the transport direction of the small article member.

(Regarding the overall structure of the automatic chamfering device) The illustrated automatic chamfering device 10 includes tables 14 and 16 on which small members 12 are mounted, and small members 12 mounted on the tables 14 and 16 on the downstream side. Transfer device 18 for transferring to
And a processing machine 20 for chamfering the edge of the small member 12.
And the processing tool 22 disposed on the processing machine 20 is attached to the small member 1
Basically, it is composed of a copying device 24 for copying the edge portion of the second. Then, while the small member 12 placed on the tables 14 and 16 is transferred by the transfer device 18, the processing tool 2
The chamfering is applied to the edge portion of the small article 12 by 2.

(Regarding Table) On the base 26 on which the transfer device 18 is installed, the supply table 14 and the discharge table 16 are arranged in series along the transfer line of the small article member 12, and both tables 14, 16 are arranged. Between small items 1
Two processing parts are defined. Both the tables 14 and 16 are roller tables provided with a plurality of rollers 27 rotatably, and the small object member 12 placed on the rollers is transferred via a transfer device 18. ..

(Regarding Transfer Device) The Supply Table 14
As shown in FIG. 3, a large-diameter roller 28 facing in parallel with the rollers 27 of the tables 14 and 16 is rotatably disposed in the processing section defined between the discharge table 16 and the discharge table 16. Lower pinch rollers 30, 30 are rotatably arranged upstream and downstream of the large-diameter roller 28. The transfer levels of the large diameter roller 28 and the lower pinch rollers 30, 30 are the same as those of the supply table 14 and the discharge table 1.
It is set to match the transfer level of 6.

A gear box 32 is arranged on the base 26, and the lower pinch rollers 30, 3 are attached to the gear box 32.
0 rotary shafts 34, 34 are rotatably supported, and each shaft 34
Gears 36, 36 are arranged at positions facing the gear box. A drive gear 38, which is commonly meshed with gears 36, 36 of both lower pinch rollers 30, 30, is rotatably supported by the gear box 32. A rotary shaft 40 of the drive gear 38 has a speed reducer 42. It is connected to a drive motor 44 arranged on the base 26 via the. Therefore, by driving the drive motor 44, both lower pinch rollers 30, 30 are rotationally driven in the same direction.

As shown in FIG. 4, the base 26 is provided with a support 46 standing upright across the drive system (gear box 32, speed reducer 42, drive motor 44) of the lower pinch rollers 30, 30.
On the front surface of the support base 46 that faces the processing portion (the supply table 14 and the discharge table 16), a guide rail 48 is arranged at a position corresponding to each of the lower pinch rollers 30 in a vertical direction over a predetermined length. ing. Each guide rail 48
5, a supporting body 50 is slidably arranged, and a piston rod 51a of a hydraulic cylinder 51 arranged on a supporting base 46 is connected to an upper end portion of the supporting body 50. .. The lower pinch roller 3 is attached to the lower end of the support body 50.
An upper pinch roller 52 forming a pair with 0 is rotatably supported. That is, by urging the hydraulic cylinder 51 in the direction of extending the piston rod 51a to lower the support body 50, the small pinch roller 30 and the upper pinch roller 52 can pinch the small article member 12.
Then, by rotating the lower pinch roller 30 in this state, the small object member 12 is transferred to the downstream side.

(Regarding Positioning Device) As shown in FIG. 5, a plurality of positioning devices 53 for the small members 12 are arranged on the bottom surface of the support base 46 at predetermined intervals in the transfer direction of the small members 12. .. That is, a guide rail 54 that intersects the transfer line is provided on the bottom surface of the support base 46, and a moving member 55 is slidably provided on the guide rail 54. An air cylinder 56 having a piston rod 56a connected to the rear end of the moving member 55 is arranged behind the guide rail 54 on the support base 46.
The moving member 55 is configured to move back and forth along the guide rail 54 by the forward and reverse urging.

An arm 57 is vertically provided at the front end of the moving member 55, and a roller 58 is rotatably supported by a vertical shaft arranged on the arm 57. This roller 58 corresponds to the supply table 14, the discharge table 16 or the large diameter roller 2
8 is movably positioned above the table 14,
16 or the small-diameter member 12 mounted on the large-diameter roller 28 is set so as to abut on one side surface. Further, a regulation plate 59 is provided at the edge of the supply table 14 or the discharge table 16 facing each other with the positioning device 53 and the roller group of the tables 14 and 16 interposed therebetween at substantially the same level as the roller 58. That is, the accessory member 12 is attached to the supply table 14.
Of the positioning device 53 when the air cylinder 56 of the positioning device 53 is placed.
By pushing the small member 12 against the opposing regulating plate 59 by the roller 58, the small member 12 can be brought to a fixed position (the end edge portion is the processing position of the processing machine 20). ing. The rollers 58 of all the positioning devices 53 are controlled so as to face the same position, and the small member 12 passing through the processing portion can be stably transferred at a fixed position.

(Regarding the processing machine) Another base 60 is arranged on the outside of the side of the base 26 on which the supply table 14 and the discharge table 16 are arranged. A processing machine 20 is arranged at a position corresponding to the processing section defined between the sixteen. That is, as shown in FIG. 2, on the upper surface of the base 60, a pair of guide rails 6 intersecting the transfer line at a predetermined interval in the transfer direction of the small object member 12.
1, 61 are arranged in parallel. This guide rail 6
A first saddle 62 is movably mounted on the first and the first saddles 62, and a piston rod 63a of a hydraulic cylinder 63 mounted on a base 60 is connected to a rear end portion of the first saddle 62. .. Therefore, by urging the hydraulic cylinder 63 forward and backward, the first saddle 62 moves the guide rails 61, 6
Move back and forth along 1.

As shown in FIG. 6, a pair of guide rails 6 arranged in parallel at a predetermined distance in a direction intersecting the transfer direction is provided on one side of the first saddle 62 which faces the upstream side.
4, 64 extend in the vertical direction over a predetermined length, and a second saddle 65 is movably arranged on the guide rails 64, 64. A hydraulic cylinder 66 is arranged upside down on the first saddle 62, and a piston rod (not shown) of the hydraulic cylinder 66 is connected to the second saddle 65. Therefore, when the hydraulic cylinder 66 is urged forward and backward, the second saddle 65 moves up and down along the guide rails 64.

The second saddle 65 is provided with a spindle head 68 which is rotatably provided with a spindle 67 which intersects the transfer line and is parallel to the guide rail 61. The spindle head 68 is horizontally arranged in the machining section. It is set to be directional. Further, a drive motor 69 is disposed on the second saddle 65, and the drive motor 6
9 and the spindle head 68 are connected to each other via a power transmission means 70 such as a pulley-belt, and the driving motor 69 is configured to rotate the spindle 67. A machining tool 22, such as a milling cutter, is arranged at the front end of the main shaft 67 that points toward the machining section.
It is designed to cut the edge of the. In addition, by changing the shape of the tip provided in the processing tool 22,
The chamfering process or the R chamfering process can be selectively applied to the edge portion of the small member 12.

(Regarding Copying Device) The spindle head 68 has
As shown in FIGS. 7 and 8, brackets 71 extending toward the processing portion are respectively arranged on both sides of the processing tool 22, and a horizontal copying roller 72 is rotatably supported at the tip of each bracket 71. There is. The end of the horizontal copying roller 72 on the processing portion side is positioned so as to substantially coincide with the cutting edge of the processing tool 22. Also, the hydraulic cylinder 63
When processing the small member 12, the first saddle 6
2 is moved forward, and the bias is controlled so that the horizontal copying rollers 72, 72 come into contact with the side surface of the small member 12 with a required pressure.
The bracket 71 is configured so that its position can be adjusted with respect to the spindle head 68, and the position of the horizontal copying roller 72 with respect to the cutting edge of the processing tool 22 can be adjusted appropriately.

The second saddle 65 is provided with a projecting member 73 projecting forward at a position facing above the spindle head 68, and a bracket facing the front of the working tool 22 at the tip of the projecting member 73. 74 is provided so as to be vertically adjustable in position. As shown in FIG.
, Vertical copying rollers 75, 75 are rotatably supported on both sides sandwiching the processing tool 22, and the vertical copying rollers 7 and
The lower end of 5 is positioned so as to substantially coincide with the cutting edge of the processing tool 22. When the small member 12 is processed, the hydraulic cylinder 66 lowers the second saddle 65 so that the vertical copying rollers 75, 75 are urged so as to contact the upper surface of the small member 12 with a required pressure.

That is, the small article member 12 facing the processed portion.
When the hydraulic cylinders 63 and 66 are urged to bring the horizontal copying roller 72 and the vertical copying roller 75 into contact with the side surface and the upper surface of the small member 12 during the machining of FIG. 7, as shown in FIG. Contact the edge of the small article member 12. As a result, the edge portion of the small article member 12 transferred by the transfer device 18 is chamfered.
Moreover, since both of the copying rollers 72 and 75 are set so as to always contact the small article member 12, the small article member 12 is temporarily assumed to be in contact.
Even if there is a deformed portion such as a wavy or curved portion and the transfer level fluctuates when passing through the machining portion, the machining tool 22 always faces the edge portion and can reliably perform machining.

[0022]

[Operation of the First Embodiment] Next, the operation of the automatic chamfering apparatus according to the first embodiment constructed as described above will be described.

In the preparatory step for chamfering, as shown in FIG. 1, the upper pinch rollers 52, 52 stand by at the raised position, and the working machine 20 stands by at the retracted position. Further, the positioning device 53 stands by at the retracted position where the roller 58 is separated from the supply table 14 or the discharge table 16.

In this state, the small member 1 is placed on the supply table 14.
When 2 is fed, first, the air cylinder 56 of the positioning device 53 is urged so that the roller 58 abuts on one side surface of the small member 12 placed on the table 14 and pushes the small member 12 against the regulating plate 59. wear. Thereby, the accessory member 1
The positioning of 2 is completed.

Next, when the tip of the small member 12 is fed to the upper portion of the lower pinch roller 30 on the upstream side, the hydraulic cylinder 51 is urged and the supporting body 50 is guided by the guide rail 48.
The small object member 12 that descends along the lower pinch roller 30 and faces the lower pinch roller 30 is sandwiched between the small member member 12 and the upper pinch roller 52. The drive motor 44 of the transfer device 18 is driven to drive the lower pinch roller 30.
When is driven to rotate, the small object member 12 nipped by the pinch rollers 52 and 30 on the upstream side is transferred toward the processing section.

In the processing machine 20, the hydraulic cylinder 63 is energized to drive the first saddle 62 to the guide rails 61, while the processing tool 22 disposed on the main shaft 67 is rotationally driven by the drive motor 69. While moving forward along 61, the hydraulic cylinder 66 is urged to lower the second saddle 65 along the guide rails 64, 64, and the working tool 22 is moved closer to the working portion. Then, as shown in FIG. 8, the horizontal copying rollers 72,
72 is brought into contact with the side surface of the small member 12 facing the processing portion, and the vertical copying rollers 75, 75 are brought into contact with the upper surface of the small member 12 so that the cutting edge of the processing tool 22 is at the edge of the small member 12. Bring to the club.

That is, the edge portion of the small member 12 transported by the pinch roller group is cut by the processing tool 22 and chamfered when passing through the processing portion. In this case, since the horizontal copying roller 72 and the vertical copying roller 75 are always in contact with the side surface and the upper surface of the small member 12, even if the small member 12 has a deformed portion such as waviness or bending, The machining tool 22 can be moved according to the displacement of the deformed portion to perform reliable chamfering.

[0028]

[Second Embodiment] FIG. 9 shows a second embodiment of the automatic chamfering apparatus according to the present invention. Since the basic structure is the same as that of the first embodiment, only different parts will be described and the same and similar members will be denoted by the same reference numerals.

A pair of guide rails 64, 64 (only one of which is shown) are arranged in parallel on the front surface of the first saddle 62 which is arranged on the base 26 so as to be movable forward and backward. A second saddle 65 is movably arranged on the guide rails 64, 64. This second saddle 65
Moves up and down by forward and reverse biasing of a hydraulic cylinder 66 arranged on the first saddle 62. A spindle head 68 is arranged on the second saddle 65 with the spindle 67 set vertically, and the machining tool 22 is arranged on the lower end of the spindle 67. The main shaft 67 is rotatably driven via a drive motor 69 and power transmission means 70 arranged in the second saddle 65.

As shown in FIG. 10, a horizontal copying roller 72 having the same diameter as the diameter of the cutting edge of the working tool 22 is arranged on the main shaft 67 projecting downward from the working tool 22, and the roller 72 is used as a working portion. The cutting edge of the processing tool 22 is set so as to face the end edge portion of the small member 12 by contacting the side surface of the small member 12 that faces the small member 12. In addition, the spindle head 68,
A bracket 76 is vertically provided so as to face the front of the processing tool 22, and a vertical copying roller 75 is rotatably supported by the bracket 76. By bringing the vertical copying roller 75 into contact with the upper surface of the small member 12,
The two cutting edges are set so as to face the edge portion of the small article member 12. Further, similarly to the first embodiment, the hydraulic cylinder 6
3, 66 are controlled to urge the first saddle 62 and the second saddle 65 so that the horizontal copying roller 72 and the vertical copying roller 75 always contact the side surface and the upper surface of the small member 12.

[0031]

[Operation of Second Embodiment] In the automatic chamfering device 10 according to the second embodiment, the pinch roller 5 of the transfer device 18 is used.
The horizontal copying roller 7 of the processing machine 20 is provided when the small member 12 that is conveyed while being sandwiched by the 2, 30 passes through the processing section.
The chamfering process is performed on the edge portion by the processing tool 22 in a state where the two and the vertical copying roller 75 are in contact with the side surface and the upper surface of the small article member 12. Even in this case, since the horizontal copying roller 72 and the vertical copying roller 75 are always in contact with the side surface and the upper surface of the small member 12, even if the small member 12 has a deformed portion such as a wavy or bent portion. The machining tool 22 can be moved according to the displacement of the deformed portion to perform reliable chamfering.

Further, in the second embodiment, since the horizontal copying roller 72 is set to have the same diameter as the diameter of the cutting edge of the working tool 22, as shown in FIG.
Even if the corners of the are formed obliquely, the processing tool 22 can be moved in accordance with the side surface shape. That is, when the inclined portion of the small member 12 is moved to the front side of the processing tool 22 from the state in which the linear portion of the small member 12 is being processed by the processing tool 22, the horizontal copying roller 72 is brought into contact with the inclined side surface first. The saddle 62 is advanced and the working tool 22 is capable of working on the beveled edge.

[0033]

As described above, according to the automatic chamfering device of the present invention, the chamfering process is carried out by cutting the edge portion of the material to be processed with the working tool, so that high speed automation is achieved. However, the production efficiency can be significantly improved. Further, since the life of the processing tool is longer than that of the belt sander, the running cost can be kept low. Further, since the processing tool can be moved by the copying roller according to the displacement of the material to be processed, the chamfering processing can be reliably performed on the edge portion of the material to be processed.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of an automatic chamfering apparatus according to a first embodiment.

FIG. 2 is a plan view of an automatic chamfering device.

FIG. 3 is a plan view showing a lower pinch roller and a drive system of the transfer device.

FIG. 4 is a vertical cross-sectional front view of essential parts showing a transfer device and a positioning device.

FIG. 5 is a side view of the transfer device.

FIG. 6 is a front view of a processing machine.

FIG. 7 is a front view of relevant parts showing a horizontal copying roller and a vertical copying roller of the processing machine in contact with a small member.

FIG. 8 is a side view of the main part in the state shown in FIG.

FIG. 9 is a front view showing a processing machine of an automatic chamfering device according to a second embodiment.

FIG. 10 is a front view of relevant parts showing a horizontal copying roller and a vertical copying roller of the processing machine in contact with a small member.

FIG. 11 is an operation explanatory view of the automatic chamfering device according to the second embodiment.

[Explanation of symbols]

 10 Automatic Chamfering Device 12 Small Parts 18 Transfer Device 22 Processing Tool 30 Lower Pinch Roller 52 Upper Pinch Roller 62 First Saddle 63 Hydraulic Cylinder 66 Hydraulic Cylinder 68 Spindle Head 72 Horizontal Copying Roller 75 Vertical Copying Roller

Claims (1)

[Claims] 1. An automatic chamfering device (10) for chamfering an edge portion of a material to be processed (12), comprising a pair of pinch rollers (52, 52) capable of sandwiching the material (12) from above and below. A transfer device (18) for transferring the material to be processed (12) in a required direction by rotating at least two pinch rollers (52, 30), each of which is provided with at least two (30) spaced apart by a predetermined distance in the material transfer direction. And a horizontal drive means for the transfer line of the work material (12).
The saddle (62) is arranged by the (63) so as to be movable toward and away from the horizontal direction, and the saddle (62) is arranged so as to be movable up and down, and the vertical drive means (6
6) A spindle head (68) that is moved up and down by a vertical movement, and a side surface of the work material (12) that is disposed integrally with the spindle head (68) and that is transferred by the transfer device (18) when moving horizontally. A horizontal copying roller (72) capable of contacting with, and a top surface of the material to be processed (12) which is disposed integrally with the spindle head (68) and which is transferred by the transfer device (18) when moving up and down. A vertical copying roller (75) that can come into contact with the main shaft head (68) is rotatably disposed, and the horizontal copying roller (72) and the vertical copying roller (75) are attached to the side surface of the material to be processed (12) and When brought into contact with the upper surface, the pair of pinch rollers (52, 30) consisting of a processing tool (22) positioned so as to be able to cut the edge of the material to be processed (12) facing between, The horizontal copying roller (72) and the vertical copying roller (75) are
The driving means (63, 6) is always contacted with the work material (12).
An automatic chamfering device characterized in that the chamfering process is performed on the edge portion by the working tool (22) while the force of (6) is controlled.