JPH10315029A - End surface machining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extremely easily machine an end surface by arranging a stabilizer to be pressed/energized to a workpiece by an elastic body at least in either side part of a transfer drum and a pressing body. SOLUTION: A stabilizer 7 to be pressed/energized to a steel pipe 6 being a workpiece is arranged on a main frame 2. When an end surface of the steel pipe 6 is machined by an end mill 5 being an end surface machining tool, a transfer drum 3 is inserted into the steel pipe 6, and the steel pipe 6 is sandwiched by a rotatably arranged pressing drum 4, and the stabilizer 7 is pressed to the steel pipe 6. In a rotating speed of the transfer drum 3, a transfer speed is desirably adjusted according to a construction material and a thickness or the like of the steel pipe 6 being a workpiece. For example, the speed is adjusted by using a torque motor as a transfer drum rotationally driving motor, or by controlling an electric current by a DC motor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an apparatus for cutting or grinding an end face of a steel pipe, a plate or the like.

[0002]

2. Description of the Related Art Generally, when welding is performed, a so-called beveling process for shaving a surface of a base material to be welded is performed.
By embedding the weld metal in the groove, the contact area is increased to increase the strength of the welded portion.
The groove processing is usually performed by a grinding process such as a grinder in addition to a cutting process using a milling machine or a lathe.

[0003] Further, as a device developed earlier by the present inventor, an apparatus for processing while being mounted on and transferred to an end portion of a workpiece such as a steel pipe, and a device for setting and transporting the workpiece while setting the workpiece. There is a processing machine. As disclosed in Japanese Patent Application Laid-Open No. Hei 7-51933, a work drum is rotated between a transfer drum driven by a rotary drive motor and a transfer drum urged in the direction of the transfer drum by a spring. It is constituted by a pressing body for sandwiching an object and a tool for processing an end face of the workpiece. According to this apparatus, since the processing is performed along the end portion of the workpiece by the transfer drum, the processing accuracy can be extremely increased.

[0004]

However, in an apparatus having a structure in which processing is performed while being transported along the end of a workpiece, for example, when a groove is formed around a tip end of a steel pipe, the apparatus body is used. Is transported along the circumference of the steel pipe, and there are upward and downward transport states. For this reason,
A problem arises in that the transfer speed varies depending on the weight of the apparatus main body. In particular, there are cases where the processing tool bites into the apparatus body when the apparatus main body changes from ascending to descending or damages the processing surface. It is considered that the cause of this is that the backlash of the transfer drum and the balance between the transfer drum and the pressing body, which sandwiches the workpiece, are lost due to the movement of the center of gravity of the apparatus main body.

[0005]

In view of the above-mentioned problems, the present inventor has accomplished the present invention as a result of further intensive studies. The feature of the present invention is that the apparatus body is connected to the end of the workpiece. An apparatus for processing an end portion of the workpiece by transporting the workpiece along a portion of the workpiece, the transport drum being rotationally driven by a rotary drive motor, and a spring biased in the direction of the transport drum by a spring. An apparatus body composed of a pressing body for sandwiching the workpiece between the drum and a tool for processing an end face of the workpiece, an elastic body is provided on at least one side of the transfer drum and the pressing body. A stabilizing device for pressing and biasing the workpiece.

Alternatively, there is provided a device for processing an end portion of a workpiece, wherein the device transfers the workpiece by bringing the end portion of the workpiece into contact with the device. A transfer drum to be driven; a pressing member urged by a spring in the direction of the transfer drum to press the work against the transfer drum; and a pressing member provided at a transfer portion of the work to be transferred by the transfer drum. A stabilizing device is provided on an apparatus main body constituted by an end face processing tool and at least one side portion of the transfer drum and the pressing body to press and urge the workpiece by an elastic body.

Here, the "workpiece" in this specification refers to a metal member for cutting or grinding the end face. For example, there is a case where a groove process for welding or a finishing process after fusing is performed. The workpiece to be processed by the apparatus of the present invention can be processed even when the shape of the end face thereof is linear or annular, such as a plate or a hollow pipe having a diameter of 200 mm or more, and is slightly curved or bent. .

[0008] The "transfer drum" means that the main body of the processing apparatus is transferred along the end portion of the workpiece by contacting and rotating the end portion of the workpiece, or The thing which transfers itself. The transfer drum is cylindrical or disk-shaped, and is rotationally driven by a rotational drive motor. For this reason, it is preferable to apply knurling or provide rubber or the like as an anti-slip on the outer peripheral surface. The transfer drum may be rotatably provided on a shaft provided on a main frame or the like and driven by a gear or belt by a rotation drive motor, or a rotation drive motor is built in and the rotation drive motor itself is used as a shaft. You may make it rotate.

The "pressing body" is a member for pressing the workpiece to the transfer drum, and is a member for sandwiching the workpiece with the transfer drum. The pressing body may be one that is supported so as to urge against the transfer drum,
For example, the transfer frame may be directly supported by a main frame, or a pressing frame may be rotatably or freely movably provided on the main frame and supported by the pressing frame. As a pressing body, a roller or a drum having a cylindrical or disk shape is rotatably supported and rolled, and a plate, a block, or a sled is formed so as to slide on a workpiece. Is also good. Since the pressing body is pressed against the transfer drum by urging itself or the pressing frame with a spring, a structure for adjusting the spring pressure so that the pressing force of the pressing body against the transfer drum can be adjusted. It is preferable to keep

The apparatus according to the present invention processes the end face of the workpiece by self-propelling along the edge face of the workpiece or by feeding the edge face of the workpiece. It is preferable that the processing tool is not separated from the end face of the workpiece. This depends on the rotation direction and processing speed of the processing tool, or the material and thickness of the workpiece, and the roughness of the processed portion.
By adjusting the method of supporting the pressing body, adjusting the pressing position of the pressing body against the transfer drum, or swaying the moving direction of the pressing body toward the inside of the workpiece, the work tool bites into the workpiece. The invention device is to be transported. Also,
A guide may be provided on the workpiece in advance and guided by the guide, or a resistor may be provided in the device of the present invention to contact the workpiece, and the self-running direction may be adjusted by the resistance of the resistor, or A separate device for pressing the device of the present invention against the workpiece may be used in combination.

The "tool for processing" refers to a tool for cutting or grinding an end face of a workpiece. The processing tool is provided, for example, on a processing frame, and is provided on the main frame so as to be capable of angle adjustment, up-down adjustment, and front-rear adjustment, thereby coping with a case where a groove angle is set. Examples of the end face processing tool include a cutting blade such as a milling cutter and a grinding wheel such as a grinder. For example, an electric tool in which a motor or the like is integrated may be directly attached to the processing frame.

The "stabilizing device" refers to a device provided on at least one of the side portions of the transfer drum and the pressing body, and for urging the workpiece with an elastic body. In other words, this stabilizing device stabilizes the transfer by the transfer drum by providing one or more on the side of the pressing body or the like so that the workpiece can be smoothly transferred while being sandwiched between the transfer drum and the pressing body. Things. Particularly, as in the case where the end face of a steel pipe is machined, the apparatus of the present invention moves along the peripheral edge on the end side of the pipe and prevents uneven transfer at the time of switching from ascending to descending.

As the stabilizing device, a cylindrical or disk-shaped roller or drum is rotatably supported and rolled as in the above-described pressing body, and a plate, block, or sled is formed. It may slide on an object. It is preferable that a rotating member such as a roller is pressed by an elastic body such as a spring or urethane rubber to control the rotation so as to provide resistance during transfer. Further, the rollers may be driven to rotate by a torque motor, and may be rotated at a speed lower than or reverse to the feed speed of the transfer drum. In addition, the transfer direction of the stabilizing device may be changed in a direction in which the processing tool bites into the workpiece. Therefore, by urging the stabilizing device against the workpiece, the holding of the workpiece by the transfer drum and the pressing body is stabilized, and the transport state is constant regardless of the ascent and descent, so that the processing surface with high accuracy is achieved. Can be obtained.

"Guiding device" refers to a device for guiding an end face machining tool in a direction to press against an end of a workpiece. As such a device, it is possible to function with the above-described pressing body or stabilizing device. However, by providing this guide device, it can function in place of the pressing body or the stabilizing device, or with the pressing body or the stabilizing device. To do. Further, the guide device may function as a stabilizer. It is preferable that the guide device is configured by a roller or a sled like the stabilizing device and is pressed by an elastic body such as a spring.
However, if the apparatus body is pressed against the end of the workpiece by the guide device, the frictional resistance of the main frame, etc., which comes into contact with the workpiece becomes large, and the transfer is not performed smoothly. There is. For this reason, it is preferable to provide a material such as a roller, a sled, or Teflon having a low coefficient of friction in a portion that comes into contact with the end of the workpiece.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments of the invention shown in the drawings.

FIG. 1 shows an example of an embodiment of an end face processing apparatus 1 according to the present invention. A transfer drum 3 is provided on a main frame 2 and a transfer drum 3 is provided by pressing and pressing in the direction of the transfer drum 3.
It is provided with two pressing drums 4 and an end mill 5 which is an end face processing tool. The main frame 2 is provided with a stabilizing device 7 for urging the steel tube 6 as a workpiece to be pressed. When the end face of the steel pipe 6 is machined, the transfer drum 3 is inserted into the steel pipe 6, the steel pipe 6 is pinched by a rotatable pressing drum 4, and the stabilizer 7 is pressed against the steel pipe 6.

As shown in FIG. 2, the transfer drum 3 is rotationally driven by a rotation driving motor 8 provided therein. This is because the rotation driving motor 8 is connected to the main frame 2.
, And the transfer drum 3 is supported by bearings 9 so as to be rotatable around the motor 8 body. The rotation speed of the transfer drum 3 is controlled by the steel pipe 6
It is preferable that the transfer speed can be adjusted according to the material, thickness, etc. For example, a torque motor is used as the rotation drive motor 8, or a DC motor controls the current to adjust the speed.

FIG. 3 shows another embodiment of the end face processing apparatus 1 according to the present invention. The pressing drum 4 is provided on a pressing frame 10 rotatably supported at one end of a main frame 2. It is a thing. The other end of the pressing frame 10 is biased by a pressing spring 11 as shown in FIG. The end mill 5 is a driving motor 1.
2 together with a processing frame 13 provided on the main frame 2 so as to be adjustable in angle, up and down, and front and rear. Further, the stabilizing device 7 includes a pressing frame 1 as shown in FIG.
A stabilizing arm 14 is rotatably supported on the zero side, a stabilizing roller 15 is provided on one end, and a pressing spring 11 is provided on the other end. In order to press the stabilizing roller 15 against the steel pipe 6, the operation lever 29 is turned in the direction of the arrow as shown by the dashed line, the operating rod 16 is turned, and the pressing spring 11 is pressed. This is performed by urging the stable roller 15 at the other end of the stable arm 14 to be pressed.

FIG. 4 shows still another example of the embodiment of the end face processing apparatus 1 according to the present invention, in which the pressing drum 4 is driven by a torque motor 17.
By rotating the pressing drum 4, it is possible to make adjustments such as lowering the rotation speed at the time of descent as compared with the time of ascending when moving along the peripheral surface of the steel pipe 6, thereby making the transfer of the end face processing device 1 more stable. Can be done. Further, the stable roller 15 shown in the present example is provided with a hard rubber 18 on the rotating shaft portion so as to increase the resistance at the time of rotation, but this is also driven by the torque motor 17 to adjust the rotational speed. It may be.

FIG. 5 shows still another example of the embodiment of the end face processing apparatus 1 according to the present invention, in which a guide roller 19 is provided on the main frame 2. The guide roller 19 moves the end face processing device 1 at right angles to the axial direction of a workpiece such as the steel pipe 6 by being guided along a guide rail 21 provided on a cylindrical guide 20. It is. That is, by providing a cylindrical guide 20 as a jig so as to abut against the inner peripheral surface of the steel pipe 6 so as to match the axis of the steel pipe 6, and providing the guide rail 21 on the guide 20, A very accurate right angle to the axis can be achieved. The guide roller 19 shown in this example is biased to the guide rail 21 by being locked to a catch lever 22 provided on the side of the stabilizing roller 15 and having a spring as shown in the figure. In this way, the engagement with the stabilizing roller 15 can also serve as the urging of the stabilizing roller 15. Of course, the stabilizing roller 15 is
And then press the catch lever 2 as in this example.
The use of No. 2 makes it possible to more reliably apply the pressing force.

When the end face of the workpiece is machined, there is a case where the machining tool such as the end mill 5 cannot be machined only by self-propelling or feeding by the transfer drum 3 without biting into the workpiece. For this reason, the pressing drum 4 and the stabilizing roller 15 may be provided so that the transport direction thereof is directed inward of the workpiece.
As shown in FIG. 6, a guide roller 23 whose transfer direction is swung toward the inside of the steel pipe 6 may be separately provided to press the apparatus body against the end face of the steel pipe 6. In this example, the guide roller 23 is provided on the main frame 2 and abuts on the inner peripheral surface of the steel pipe 6. However, the guide roller 23 may be provided on the pressing frame 10 or abut on the outer peripheral surface of the steel pipe 6. Normally, guide roller 2
The guide devices such as 3 are provided on both sides of the device main body so that one side of the main frame 2 or the like does not separate from the end of the workpiece.

If the apparatus main body is pressed against the end face of the workpiece by a guide device or the like, the frictional resistance with the main frame 2 or the like contacting the end face of the workpiece increases. Therefore, as shown in FIG.
4 is preferably provided. End face roller 24 shown in this example
Is provided with a guide flange 25 at one end thereof.
The other end of the guide roller 23 is rotatably provided at the base of the guide roller 23 supported by an arm provided rotatably.
1, the workpiece is sandwiched between the guide roller 23 and the flange 25. In this case, a guide roller 23 is provided instead of the flange 25, and the two guide rollers 23
Alternatively, the workpiece may be sandwiched. In this embodiment, the guide roller 23 and the end surface roller 24 are integrally formed, but may be provided separately.

FIG. 8 shows a state in which the end surface of the plate-like iron plate 26 is machined. The provision of the stabilizing device 7 makes it possible to transfer the apparatus body in a more stable state. Further, in this example, a guide roller 23 is provided so that the apparatus main body is pressed against the end face of the iron plate 26.

FIG. 9 shows still another example of the embodiment of the present invention, which is an end face processing apparatus 1 for processing by rotating a steel pipe 6. This is a flat end contact portion 27.
The transfer drum 3, the pressing drum 4, and the stabilizing device 7 are provided in a protruding state, and the steel pipe 6 is set between them and is rotated by an end mill 5 provided below the transfer drum 3 while rotating. It is of a structure that causes it. The transfer drum 3 is chain-driven (not shown) by a rotation driving motor, and the pressing drum 4 and the stabilizing device 7 are provided in a state pressed by a spring along the groove 28, respectively. The driving means of the transfer drum 3 may be a belt, a gear, or the like, and is not particularly limited. Further, in this processing apparatus 1, it is possible to easily set and process even a plate-like iron plate 26 as shown by a chain line in the figure. Further, in this end face processing apparatus 1, a guide device such as a guide roller 23 is provided,
By providing the transfer direction of the stabilizing device 7 in the direction in which the workpiece is pressed against the end face processing tool, the workpiece may be rotated so as to be drawn toward the processing apparatus 1.

[0025]

As described above, the end face machining apparatus according to the present invention is extremely compact in itself, and is simply set on the end portion of a workpiece such as a steel pipe or an iron plate, and the machine is automatically operated. The end face can be cut. For this reason, it is not necessary to position and set a workpiece such as a steel pipe in a cutting device or the like as in the prior art, and the end face can be processed extremely easily, and the effect becomes more remarkable as the workpiece becomes larger. Becomes For this reason, on-site processing is also possible, and the trouble of transferring the workpiece can be omitted, and the on-site dimension adjustment can be easily performed.

Further, the provision of the stabilizing device, which is a feature of the apparatus of the present invention, makes it possible to prevent the deviation of the transfer state when the processing apparatus main body is switched between ascending and descending, such as when processing a workpiece such as a steel pipe. Thus, the processing surface can be made uniform and the processing accuracy can be significantly increased. In addition, if the apparatus main body is pressed against the end face of the workpiece by a guide device or the like, the workpiece can be processed by following the workpiece regardless of the end face shape. Furthermore, the end face processing apparatus according to the present invention has a stabilizing device that stabilizes the transfer of the workpiece and improves the processing accuracy even when the processing is performed by transferring the workpiece while fixing the apparatus body. Can be done. Also, in this case, if the workpiece is transferred to the device body by a guide device or the like,
This has an extremely useful effect in practical use, such as improvement in processing efficiency.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an embodiment of an end face processing apparatus according to the present invention.

FIG. 2 is a sectional view of a transfer drum of the end face processing device shown in FIG.

3A is a side view showing another example of the embodiment of the end face processing apparatus according to the present invention, and FIG. 3B is a front view of FIG.

FIG. 4 is a bottom view showing still another example of the embodiment of the end face processing apparatus according to the present invention.

FIG. 5 is a front view showing still another example of the embodiment of the end face processing apparatus according to the present invention.

FIG. 6 is a plan view showing still another example of the embodiment of the end face processing apparatus according to the present invention.

FIG. 7 is a perspective view showing still another example of the embodiment of the guide device.

FIG. 8 is a front view showing a state where a plate-shaped iron plate is cut by the end face processing apparatus according to the present invention.

FIG. 9 is a front view showing still another example of the embodiment of the end face processing apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 End surface processing apparatus 2 Main frame 3 Transfer drum 4 Press drum 5 End mill 6 Steel pipe 7 Stabilizer 8 Rotation drive motor 9 Bearing 10 Press frame 11 Press spring 12 Drive motor 13 Processing frame 14 Stabilizing arm 15 Stabilizing roller 16 Operation Rod 17 Torque motor 18 Hard rubber 19 Guide roller 20 Guide 21 Guide rail 22 Catch lever 23 Guide roller 24 End face roller 25 Flange 26 Iron plate 27 End face contacting part 28 Groove 29 Operating lever

Claims (8)

[Claims] An apparatus for processing an end portion of a workpiece by transporting an apparatus body along an end portion of the workpiece, the transport drum being rotationally driven by a rotation driving motor. A pressing body urged in the direction of the transfer drum by a spring to pinch the workpiece between the transfer drum, and an apparatus main body constituted by a tool for processing an end face of the workpiece, the transfer drum, An end face processing apparatus, wherein a stabilizing device is provided on at least one of the side portions of the pressing body to press and urge the workpiece with an elastic body. 2. The end face processing device according to claim 1, wherein the stabilizing device includes a stabilizing roller whose rotation is controlled by an elastic body. 3. The end face processing apparatus according to claim 1, wherein the stabilizing device is provided with a stabilizing roller driven to rotate by a torque motor. 4. The end face processing apparatus according to claim 1, wherein the stabilizing device is provided in such a direction that the transfer direction is such that the end face processing tool is pressed against the end of the workpiece. 5. The end face processing apparatus according to claim 1, wherein the pressing body is provided in a direction in which a transfer direction of the pressing body presses the end face processing tool against an end of the workpiece. 6. The end face processing apparatus according to claim 1, wherein the apparatus main body is provided with a guide device for guiding an end face processing tool in a direction to press the end face of the workpiece. 7. The end face processing apparatus according to claim 6, wherein the guide device is a roller provided in a direction in which the rotation direction is such that the end face processing tool is pressed against the end of the workpiece. 8. An apparatus for processing an end portion of a workpiece, the workpiece being transferred by bringing the end portion of the workpiece into contact with the workpiece, and being rotated by a rotation drive motor. A transfer drum to be driven; a pressing member urged by a spring in the direction of the transfer drum to press the work against the transfer drum; and a pressing member provided at a transfer portion of the work to be transferred by the transfer drum. An apparatus body constituted by an end face machining tool is provided with a stabilizing device for urging the workpiece by an elastic body on at least one side of the transfer drum and the pressing body. Edge processing equipment.