JP7150673B2 - Beveling machine and fixing method for beveling machine - Google Patents

Description

The present invention provides a beveling machine and fixing of the beveling machine used when performing beveling on the end of a pipe joint having a bent portion used in facilities such as power plants and chemical plants. Regarding the method.

Pipe joints used in facilities such as power plants and chemical plants, when joining the end of this pipe joint and the end of piping (steel pipe), or the end of this pipe joint and the end of the pipe joint Butt welds are used when joining parts.

When performing this butt welding, both ends are beveled (shaped).

In particular, when a part of a pipe joint that is already installed in a facility (existing state) is cut and the existing pipe joint is welded to a mating member such as a pipe or pipe joint, With a groove processing machine, the end of the pipe joint in the existing state and the end of the pipe or pipe joint that will be the mating member are cut into a tapered structure or a chamfered structure, etc., and processed into the required groove shape. (perform beveling).

Grooving of the ends of pipes and pipe fittings is performed by pressing a metal cutting blade against the ends of pipes and pipe fittings and applying power to rotate the cutting blades to achieve the required opening. It is processed into a tip shape.

There are two types of fixing of pipes and pipe joints to be processed: an outer chuck mechanism for fixing from the outer diameter side and an inner chuck mechanism for fixing from the inner diameter side.

JP-A-2008-260079 (Patent Document 1) is a background art in this technical field.

Patent Document 1 discloses a pipe beveling machine that performs beveling on the end of a pipe connected to equipment, in which foreign matter such as chips and dust generated from the end of the pipe enters the pipe. A pipe beveling machine is disclosed that can prevent this and reliably remove foreign matter remaining in the pipe. Patent Document 1 describes a pipe beveling machine having a sponge having a cross-sectional area larger than the cross-sectional area of the opening of the pipe, and the sponge being attached to a chuck mechanism (see abstract). .

JP-A-2008-260079

Patent Literature 1 describes a pipe beveling machine (beveling machine) that performs beveling on the end of an existing pipe (piping).

However, Patent Literature 1 does not describe a beveling machine that performs beveling on the end of an existing pipe joint having a bent portion such as an elbow or tee.

Therefore, the present invention has an inner chuck mechanism that is fixed to the pipe joint to be processed from the inner diameter side when performing groove processing on the end of a pipe joint that is in an existing state and has a bent portion such as an elbow or a tee. A beveling machine and a fixing method for the beveling machine are provided.

In order to solve the above-mentioned problems, the beveling machine of the present invention provides a drive section for rotating a cutting blade that cuts the end of a pipe joint, and a drive section that is fixed from the inner diameter side of the pipe joint to bend the pipe joint. a first inscribed member that inscribes the bottom of the pipe joint; a second inscribed member that fixes the driving portion from the inner diameter side of the pipe joint and inscribes the bent portion of the pipe joint; a third inscribed member that is fixed from the pipe joint and inscribed on the outside of the bent portion of the pipe joint; a shaft that connects the first inscribed member and the driving portion; a first screw shaft connecting the second inscribed member and the shaft; and a second screw shaft connecting the third inscribed member and the shaft.

In order to solve the above-described problems, a method for fixing a beveling machine according to the present invention fixes a drive unit for rotating a cutting blade that cuts an end of a pipe joint from the inner diameter side of the pipe joint, Rotating the shaft to fix a first inscribed member, which is connected to the drive section via the shaft and inscribed in the bottom of the bent portion of the pipe joint, from the inner diameter side of the pipe joint; fixing the second inscribed member inscribed in the pipe joint from the inner diameter side of the pipe joint by rotating the shaft to extend the first screw shaft that connects the second inscribed member and the shaft; and fixing the third inscribed member inscribed on the outside of the pipe joint from the inner diameter side of the pipe joint by rotating the shaft to extend the second screw shaft connecting the third inscribed member and the shaft. characterized by

According to the present invention, when groove processing is performed on the end of a pipe joint that is in an existing state and has a bent portion such as an elbow or a tee, it has an inner chuck mechanism that fixes the pipe joint to be processed from the inner diameter side. A beveling machine and a fixing method for the beveling machine can be provided.

Problems, configurations, and effects other than those described above will be clarified by the following description of the embodiments.

1 is a cross-sectional view for explaining a cross-sectional configuration of a beveling machine 100 described in this embodiment. FIG. FIG. 3 is an explanatory diagram for explaining the relationship between the shaft 3, the screw shaft 82, and the screw shaft 83 of the beveling machine 100 described in this embodiment. It is an explanation explaining the relationship between the shaft 3 and the screw shaft 84 and the screw shaft 85 of the beveling machine 100 described in the present embodiment. It is an explanatory view explaining drive part 2 of beveling machine 100 indicated in this example. FIG. 3 is an explanatory diagram for explaining the relationship between an inner peripheral gear 23 and an outer peripheral gear 24 of the drive section 2 of the beveling machine 100 described in this embodiment. FIG. 2 is an explanatory diagram illustrating a state before the beveling machine 100 described in the present embodiment performs beveling on the end portion of the pipe joint 1; FIG. 3 is an explanatory diagram illustrating a state in which a beveling machine 100 described in the present embodiment is beveling an end portion of a pipe joint 1;

Embodiments of the present invention will be described below with reference to the drawings. It should be noted that substantially the same or similar configurations are denoted by the same reference numerals, and the description may be omitted if the description is redundant.

First, the cross-sectional configuration of the beveling machine 100 described in this embodiment will be described.

FIG. 1 is a cross-sectional view for explaining the cross-sectional configuration of a beveling machine 100 described in this embodiment.

The beveling machine 100 described in the present embodiment is particularly suitable for beveling the end of a pipe joint having a bent (curved) portion such as an elbow or tee in an existing state (a state already installed in equipment). is executed. And it is a type of inner chuck mechanism that fixes the beveling machine 100 and this pipe joint from the inner diameter side of the pipe joint.

In this embodiment, an elbow (hereinafter referred to as "pipe joint 1") will be used for explanation.

In addition, the facility is, for example, a device or a container in which a pipe or a pipe joint is installed to be connected to the pipe joint 1, but is not limited to this, as long as the pipe joint 1 is installed. good.

A beveling machine 100 described in this embodiment includes a drive unit 2 that rotates a cutting blade 11 that cuts the end of a pipe joint 1 , and a drive unit 2 that is fixed from the inner diameter side of the pipe joint 1 . An inscribed member (first inscribed member) 51 inscribed in the bottom of the bent portion of the pipe joint 1, and an inscribed member ( a second inscribed member) 52, an inscribed member (third inscribed member) 53 that fixes the driving portion 2 from the inner diameter side of the pipe joint 1 and inscribes the outside of the bent portion of the pipe joint 1, and an inscribed member A shaft (axis center) 3 that connects 51 and drive unit 2 , a handle 9 that rotates shaft 3 and presses (presses) inscribed member 51 to the bottom, and inscribed member 52 and shaft 3 are connected. It has a screw shaft (first screw shaft) 82 and a screw shaft (second screw shaft) 83 that connects the inscribed member 53 and the shaft 3 .

A force to move horizontally is transmitted to the screw shaft 82 by the rotation of the shaft 3, and the screw shaft 82 moves (moves) horizontally (inwardly of the bent portion of the pipe joint 1).

A force to move horizontally is transmitted to the screw shaft 83 by the rotation of the shaft 3, and the screw shaft 83 moves (moves) horizontally (toward the outside of the bent portion of the pipe joint 1).

That is, the inscribed member 51 is installed at the tip of the shaft 3 and pressed against the bottom of the bent portion of the pipe joint 1 .

Also, the inscribed member 52 is installed at the distal end of the screw shaft 82 and pressed to the inside of the bent portion of the pipe joint 1 .

In addition, the inscribed member 53 is installed at the tip of the screw shaft 83 and pressed to the outside of the bent portion of the pipe joint 1 .

The cutting blade 11 is connected to the drive section 2 by an arm 12. As shown in FIG. Then, the cutting blade 11 is fixed at the installation position by the lock mechanism 13 according to the diameter (radius) of the pipe joint 1 .

In other words, the cutting edge 11 is fixed to the extendable arm 12 so that beveling can be performed for pipe joints 1 of various calibers (diameters (radii)). The arm 12 adjusts the position at which the cutting blade 11 is installed so that beveling can be performed on pipe joints 1 of various diameters.

The lock mechanism 13 fixes the arm 12 at the position where the cutting blade 11 is installed so that beveling can be performed on the pipe joints 1 of various diameters.

By installing the arm 12 and the lock mechanism 13 in this way, it is possible to perform beveling for pipe joints 1 of various diameters.

That is, the beveling machine 100 described in this embodiment adjusts the position where the cutting blade 11 is installed (installation position of the cutting blade 11), and the extendable arm 12 and the lock mechanism 13 for fixing the arm 12 , can be used to perform beveling for pipe fittings 1 of various diameters.

The handle 9 has a mechanism for fixing the rotation of the shaft 3 when the inscribed member 52 and the inscribed member 53 are fixed inside the bent portion of the pipe joint 1 and outside the bent portion of the pipe joint 1. (not shown) is installed.

Next, the relationship between the shaft 3, the threaded shaft 82, and the threaded shaft 83 of the beveling machine 100 described in this embodiment will be described.

FIG. 2 is an explanatory diagram illustrating the relationship between the shaft 3, the screw shaft 82, and the screw shaft 83 of the beveling machine 100 described in this embodiment.

A gear 31 is installed on the shaft 3 of the beveling machine 100 described in this embodiment. This gear 31 rotates together with the shaft 3 .

The screw shaft 82 has a spring mechanism 42 and a screw mechanism 72 that fixes the inscribed member 52 in the circumferential direction.

This screw mechanism 72 converts the rotational force of the gear 31 into a force that moves the screw shaft 82 in the horizontal direction. That is, the torque of the gear 31 is transmitted to the screw shaft 82, and the screw shaft 82 has a screw mechanism 72 that is threaded so as to move (operate) the screw shaft 82 in the horizontal direction. As a result, the screw shaft 82 extends inside the bent portion of the pipe joint 1 .

In addition to the screw mechanism 72 , the screw shaft 82 is provided with a spring mechanism 42 that presses the inscribed member 52 toward the inside of the bent portion of the pipe joint 1 . The spring mechanism 42 has a spring 62A that is installed around the screw shaft 82 and a spring stop 62B that secures the spring. As a result, the screw shaft 82 extends to the inside of the bent portion of the pipe joint 1 , the inscribed member 52 presses against the inside of the bent portion of the pipe joint 1 , and the screw shaft 82 extends to the inside of the bent portion of the pipe joint 1 . When extended inward, the spring 62A contracts, and a repulsive force (tension acting from the shaft 3 toward the contact peripheral surface of the pipe joint 1) is generated in the spring 62A, causing the inscribed member 52 to move toward the bent portion of the pipe joint 1. Press inward.

Thus, the combination of the spring mechanism 42 and the screw mechanism 72 can stably fix to the contact surface.

The screw shaft 83 has a spring mechanism 43 and a screw mechanism 73 that fixes the inner contact member 53 in the circumferential direction.

This screw mechanism 73 converts the rotational force of the gear 31 into a force that moves the screw shaft 83 in the horizontal direction. That is, the torque of the gear 31 is transmitted to the screw shaft 83, and the screw shaft 83 has a screw mechanism 73 that is threaded so as to move (operate) the screw shaft 83 in the horizontal direction. As a result, the screw shaft 83 extends outside the bent portion of the pipe joint 1 .

In addition to the screw mechanism 73 , the screw shaft 83 is provided with a spring mechanism 43 that presses the inscribed member 53 to the outside of the bent portion of the pipe joint 1 . The spring mechanism 43 has a spring 63A installed around the screw shaft 83 and a spring stop 63B for fixing the spring. As a result, the screw shaft 83 extends to the outside of the bent portion of the pipe joint 1 , the inscribed member 53 presses against the outside of the bent portion of the pipe joint 1 , and the screw shaft 83 extends to the outside of the bent portion of the pipe joint 1 . When extended outward, the spring 63A contracts, and a repulsive force (tension acting from the shaft 3 toward the contact peripheral surface of the pipe joint 1) is generated in the spring 63A, causing the inscribed member 53 to move toward the bent portion of the pipe joint 1. Press outward.

Thus, the combination of the spring mechanism 43 and the screw mechanism 73 can be stably fixed to the contact surface.

As a result, the beveling machine 100 described in this embodiment can reliably perform beveling on the end portion of the existing pipe joint 1 .

The length C2 of the inscribed member 52 and the length C3 of the inscribed member 53 preferably have a relationship of C2≧C3 (C2 is greater than or equal to C3). Thereby, the inscribed member 52 and the inscribed member 53 can be more reliably fixed from the inner diameter side of the bent portion of the pipe joint 1 .

When the pipe joint is a tee, it is preferable that there is a relationship of C2=C3 (C2 and C3 are approximately equal).

Around the gear 31, the screw mechanism 72 of the screw shaft 82, and the screw mechanism 73 of the screw shaft 83, a mechanism (not shown) for holding them is installed.

2 indicate the direction of rotation of the gear 31 and the direction of movement of the screw shafts 82 and 83. As shown in FIG.

Next, the relationship between the shaft 3 and the screw shafts 84 and 85 of the beveling machine 100 described in this embodiment will be described.

FIG. 3 is an explanation for explaining the relationship between the shaft 3 and the screw shafts 84 and 85 of the beveling machine 100 described in this embodiment.

A gear 32 is installed on the shaft 3 of the beveling machine 100 described in this embodiment. This gear 32 rotates together with the shaft 3 .

The beveling machine 100 described in the present embodiment has the driving part 2 fixed from the inner diameter side of the pipe joint 1, the inscribed member 54 inscribed in the bent part of the pipe joint 1, and the driving part 2 of the pipe joint 1. It is preferable to have an inscribed member 55 that is fixed from the inner diameter side and that inscribes the bent portion of the pipe joint 1 .

The inscribed member 54 and the inscribed member 55 are installed in a direction orthogonal to the direction in which the inscribed member 52 and the inscribed member 53 are installed. As a result, the beveling machine 100 can be more reliably fixed from the inner diameter side of the bent portion of the pipe joint 1 .

The inscribed member 54 is installed at the tip of the screw shaft 84 and pressed against the bent portion of the pipe joint 1 . The inscribed member 55 is installed at the tip of the screw shaft 85 and pressed against the bent portion of the pipe joint 1 .

The screw shaft 84 has a spring mechanism 44 and a screw mechanism 74 that fixes the inscribed member 54 in the circumferential direction.

This screw mechanism 74 converts the rotational force of the gear 32 into a force that moves the screw shaft 84 in the horizontal direction. That is, the torque of the gear 32 is transmitted to the screw shaft 84, and the screw shaft 84 has a screw mechanism 74 threaded so as to move (operate) the screw shaft 84 in the horizontal direction. Thereby, the screw shaft 84 extends in the side direction of the bent portion of the pipe joint 1 .

In addition to the screw mechanism 74 , the screw shaft 84 is provided with a spring mechanism 44 that presses the inscribed member 54 in the side direction of the bent portion of the pipe joint 1 . The spring mechanism 44 has a spring 64A that is installed around the screw shaft 84 and a spring stop 64B that secures the spring. As a result, the screw shaft 84 extends in the side direction of the bent portion of the pipe joint 1 , the inscribed member 54 presses in the side direction of the bent portion of the pipe joint 1 , and the screw shaft 84 further extends in the side direction of the bent portion of the pipe joint 1 . When the portion is extended in the side direction, the spring 64A contracts, and a repulsive force (tension acting from the shaft 3 toward the contact peripheral surface of the pipe joint 1) is generated in the spring 64A, causing the inscribed member 54 to move toward the pipe joint 1. Press in the side direction of the bend.

Thus, the combination of the spring mechanism 44 and the screw mechanism 74 can be stably fixed to the contact surface.

The screw shaft 85 has a spring mechanism 45 and a screw mechanism 75 that fixes the inner contact member 55 in the circumferential direction.

This screw mechanism 75 converts the rotational force of the gear 32 into a force that moves the screw shaft 85 in the horizontal direction. That is, the torque of the gear 32 is transmitted to the screw shaft 85, and the screw shaft 85 has a screw mechanism 75 that is threaded so as to move (operate) the screw shaft 85 in the horizontal direction. Thereby, the screw shaft 85 extends in the side direction of the bent portion of the pipe joint 1 .

In addition to the screw mechanism 75 , the screw shaft 85 is provided with a spring mechanism 45 that presses the inscribed member 55 in the side direction of the bent portion of the pipe joint 1 . The spring mechanism 45 has a spring 65A installed around the screw shaft 85 and a spring stop 65B for fixing the spring. As a result, the screw shaft 85 extends in the side direction of the bent portion of the pipe joint 1 , the inscribed member 55 presses in the side direction of the bent portion of the pipe joint 1 , and the screw shaft 85 further extends in the side direction of the bent portion of the pipe joint 1 . When the portion is extended in the side direction, the spring 65A contracts, and a repulsive force (tension acting from the shaft 3 toward the contact peripheral surface of the pipe joint 1) is generated in the spring 65A, causing the inscribed member 55 to move toward the pipe joint 1. Press in the side direction of the bend.

Thus, the combination of the spring mechanism 45 and the screw mechanism 75 can stably fix to the contact surface.

The length C4 of the inscribed member 54 and the length C5 of the inscribed member 55 preferably have a relationship of C4=C5 (C4 and C5 are substantially equal). As a result, the inscribed member 52 and the inscribed member 53 can be more reliably fixed from the inner diameter side of the bent portion of the pipe joint 1, and the shaft 3 can be installed at the center of the pipe joint 1. .

When the pipe joint is a tee, it is preferable to have a relationship of C2=C3 (C2 and C3 are approximately equal). , can be omitted.

In addition, it is preferable that the gear 31 installed on the shaft 3 is installed higher than the gear 32 installed on the shaft 3 (a position farther from the bottom of the pipe joint 1). Thereby, the inscribed member 52 and the inscribed member 53 can be more reliably fixed from the inner diameter side of the bent portion of the pipe joint 1 .

Further, around the gear 32, the screw mechanism 74 of the screw shaft 84, and the screw mechanism 75 of the screw shaft 85, a mechanism (not shown) for holding them is installed.

The arrows in FIG. 3 indicate the rotating direction of the gear 32 and the moving directions of the screw shafts 84 and 85 .

A method of fixing the beveling machine 100 (a method of fixing the beveling machine 100 from the inner diameter side of the pipe joint 1) is as follows.

Here, the fixing method of the beveling machine 100 is to fix the drive unit 2 that rotates the cutting blade 11 that cuts the end of the pipe joint 1 from the inner diameter side of the pipe joint 1. It is a fixing method to the joint 1 .

The fixing method of the beveling machine 100 described in this embodiment is an inscribed member (first inscribed member) 51 that is connected to the drive section 2 via the shaft 3 and inscribed in the bottom of the bent portion of the pipe joint 1. is fixed from the inner diameter side of the pipe joint 1 by rotating the shaft 3; A step of extending a threaded shaft (first threaded shaft) 82 that connects the inscribed member 52 and the shaft 3 and fixing it from the inner diameter side of the pipe joint 1; A step of fixing the (third inscribed member) 53 from the inner diameter side of the pipe joint 1 by extending the screw shaft (second screw shaft) 83 that connects the inscribed member 53 and the shaft 3 by rotating the shaft 3. and have

Specifically, the fixing method of the beveling machine 100 described in this embodiment is as follows.

First, spring mechanisms (including 42, 43, preferably including 44, 45) and screw mechanisms (72, 73, preferably including 74, 75) from which threaded shafts (82, 83, preferably including 84, 85) are formed. ) are shrunk and inserted into the pipe joint 1 .

Next, the handle 9 connected to the shaft 3 is rotated to extend the shaft 3 and press the inscribed member 51 against the bottom of the bent portion of the pipe joint 1 .

At the same time, the screw shafts (82, 83, preferably including 84, 85) connected to the shaft 3 extend with the rotation of the shaft 3, and the inscribed members (52, 53, preferably including 54, 55) are It is pressed against the inner surface (peripheral contact surface) of the bent portion of the pipe joint 1 .

Finally, the rotation of the shaft 3 is fixed, and the inscribed members (including 51, 52, 53, preferably 54, 55) are fixed to the bent portion of the pipe joint 1. Thereby, the beveling machine 100 is fixed from the inner diameter side of the pipe joint 1 .

When fixing the beveling machine 100 to the pipe joint 1, the diameter of the pipe joint 1 and the curvature of the bent portion should be taken into account. 85). Also, the position of connecting the screw shafts (82, 83, 84, 85) to the shaft 3 is adjusted in consideration of the diameter of the pipe joint 1.

Next, the drive unit 2 of the beveling machine 100 described in this embodiment will be described.

FIG. 4 is an explanatory diagram for explaining the drive unit 2 of the beveling machine 100 described in this embodiment.

The drive unit 2 of the beveling machine 100 described in this embodiment includes a motor 21 for rotating the cutting blade 11, an inner peripheral member 25 connected to the central shaft of the motor 21, and a It has an inner peripheral gear 23 formed, an outer peripheral gear 24 that meshes with and rotates with the inner peripheral gear 23 , and an outer peripheral member 26 formed on the outer periphery of the outer peripheral gear 24 .

The peripheral gear 24 and the peripheral member 26 are installed around the shaft 3 and rotate around the shaft 3 . In addition, the cutting blade 11 is installed on the outer peripheral member 26 via the arm 12, and when the outer peripheral member 26 rotates around the shaft 3, the cutting blade 11 also rotates around the shaft 3, and the pipe joint Cut the end of 1.

That is, when the motor 21 rotates, the inner peripheral gear 23 rotates, and the outer peripheral gear 24 rotates around the shaft 3 as the inner peripheral gear 23 rotates.

A through hole 27 through which the shaft 3 penetrates is formed in the center of the driving portion 2 . The through hole 27 is threaded. Further, the shaft 3 passing through the through hole 27 is also threaded. The threading applied to the through hole 27 and the threading applied to the shaft 3 are fitted.

When the shaft 3 rotates as the handle 9 rotates, the shaft 3 fitted in the through hole 27 extends toward the bottom of the pipe joint 1 . As a result, the inscribed member 51 installed at the tip of the shaft 3 is pressed against the bottom of the bent portion of the pipe joint 1 .

Further, the shaft 3 is formed with a screw 92 for fixing the shaft 3 to the handle 9 , and the shaft 3 is fixed to the handle 9 .

Further, the handle 9 has a mechanism (for example, a pin 91) that fixes the rotation of the shaft 3 when the inscribed members (51, 52, 53, 54, 55) are fixed to the bent portion of the pipe joint 1. Installed.

In this embodiment, two sets of the motor 21, the inner peripheral member 25, and the inner peripheral gear 23 are installed in the drive unit 2. As shown in FIG. However, the drive unit 2 may be provided with one set, or three or four sets. Preferably, one to four of these sets are installed, depending on the power of the cutting blades 11 .

Next, the relationship between the inner peripheral gear 23 and the outer peripheral gear 24 of the drive section 2 of the beveling machine 100 described in this embodiment will be described.

FIG. 5 is an explanatory diagram for explaining the relationship between the inner peripheral gear 23 and the outer peripheral gear 24 of the drive section 2 of the beveling machine 100 described in this embodiment. 24 is a top view of 24 as viewed from above.

The drive unit 2 includes an inner peripheral member 25 connected to the central shaft of the motor 21, an inner peripheral gear 23 formed on the outer periphery of the inner peripheral member 25, an outer peripheral gear 24 meshing with the inner peripheral gear 23 and rotating, A peripheral member 26 formed on the outer periphery of the gear 24 is formed.

The outer peripheral gear 24 and the outer peripheral member 26 are installed around the shaft 3 and rotate around the shaft 3 .

Although mechanical gears such as the inner peripheral gear 23 and the outer peripheral gear 24 are used in this embodiment, magnetic gears may be used for these. For example, the inner magnetic gear has 8 permanent magnets (4 S poles and 4 N poles are alternately arranged on the circumference), and the outer magnetic gear has 24 permanent magnets (12 S poles and 4 N poles). Permanent magnets with alternating 12 poles on the circumference can also be used.

Next, the beveling machine 100 described in this embodiment performs beveling on the end of the pipe joint 1 before beveling on the end of the pipe joint 1. explain the state.

FIG. 6 is an explanatory diagram illustrating a state before the beveling machine 100 described in this embodiment performs beveling on the end portion of the pipe joint 1 .

FIG. 7 is an explanatory diagram illustrating a state in which the beveling machine 100 described in this embodiment is beveling the end portion of the pipe joint 1 .

The beveling machine 100 described in this embodiment is fixed from the inner diameter side of the pipe joint 1 . Then, the drive unit 2 is slightly moved, that is, the cutting edge 11 is brought into contact with the end of the pipe joint 1, and the end of the pipe joint 1 is cut into a tapered structure or a grooved structure to obtain a required groove. Machine to shape (perform beveling).

A taper structure, a ridged structure, or the like can be selected depending on the shape of the cutting edge 11 .

In other words, the beveling of the end of the pipe joint 1 is performed by pressing the cutting blade 11 made of a metal material against the end of the pipe joint 1 and applying power from the motor 21 of the drive unit 2 to rotate the cutting blade 11. It is processed into the required groove shape.

The inscribed members (51, 52, 53, 54, 55) are in close contact with the inner surface (peripheral contact surface) of the pipe joint 1, and particularly in close contact with the bent portion (bent portion) of the pipe joint 1. It is something to do. The inscribed members (51, 52, 53, 54, 55) fix the beveling machine 100 from the inner diameter side of the pipe joint 1, that is, the shaft 3 and the screw shafts (82, 83, 84, 85). is fixed from the inner diameter side of the pipe joint 1 , it is preferable that it deforms according to the shape of the inner surface of the pipe joint 1 . For example, rubber, silicone, elastomer, etc. can be used, but not limited thereto. It is formed from a material such as rubber.

As a result, when groove processing is performed on the end portion of the pipe joint 1 that is in an existing state and has a bent portion, the groove processing machine 100 of the inner chuck mechanism that is fixed to the pipe joint 1 to be processed from the inner diameter side can be used. , can be stably fixed.

In this way, since the beveling machine 100 can be fixed from the inner diameter side of the pipe joint 1, the existing pipe joint 1 can be cut, and the pipe and the pipe joint, which are the mating members, can be butt-welded. can be used (bonded).

According to the present embodiment, even when the existing pipe joint and the pipe or pipe joint serving as the mating member are welded, the existing pipe joint and the mating member can be welded by a simple operation. Pipes and pipe joints can be joined.

Thus, the beveling machine 100 described in this embodiment includes the shaft 3, the inscribed members (51, 52, 53, 54, 55), the spring mechanisms (42, 43, 44, 45) and the screw mechanisms ( 72, 73, 74, 75), the shaft 3, spring mechanisms (42, 43, 44, 45) and screw mechanisms (72, 73, 74, 75). ) to press the inscribed members (51, 52, 53, 54, 55) against the inner surface of the pipe joint 1, and press the inscribed members (51, 52, 53, 54, 55) against the pipe joint 1 It is to be brought into close contact with the inner surface of the

Then, the inscribed members (51, 52, 53, 54, 55) are deformed according to the shape of the inner surface of the pipe joint 1, so that they are in closer contact with the inner surface of the pipe joint 1, 51, 52, 53, 54, 55) are stably fixed to the tangent surface.

According to this embodiment, the end portion of the pipe joint 1 in the existing state can be beveled. Further, according to the present embodiment, cost reduction can be expected due to the shortening of the construction process associated with the procurement of materials and the reduction in the number of welding points.

Further, according to the present embodiment, when one end of the pipe joint 1 in the existing state is cut and the cut end is grooved, the end of the pipe joint having a bent portion is particularly suitable. It is possible to provide the beveling machine 100 for beveling. Further, it is possible to provide the beveling machine 100 having an inner chuck mechanism that is fixed to the pipe joint 1 to be processed from the inner diameter side.

In addition, the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the above-described embodiments are specifically described in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Also, part of the configuration of one embodiment can be replaced with part of the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. Moreover, it is also possible to add, delete, or replace a part of other configurations with respect to a part of the configuration of each embodiment.

DESCRIPTION OF SYMBOLS 1... Pipe joint, 2... Drive part, 3... Shaft, 9... Handle, 11... Cutting blade, 12... Arm, 13... Lock mechanism, 21... Motor, 23... Inner peripheral gear, 24... Outer peripheral gear, 25... Inside Peripheral member 26... Peripheral member 27... Through hole 31, 32... Gears 42, 43, 44, 45... Spring mechanism 51, 52, 53, 54, 55... Inscribed member 62A, 63A, 64A, 65A... spring, 62B, 63B, 64B, 65B... spring stopper, 72, 73, 74, 75... screw mechanism, 82, 83, 84, 85... screw shaft, 91... pin, 92... screw, 100... groove processing machine.

Claims (5)

a drive unit that rotates a cutting blade that cuts the end of the pipe joint;
a first inscribed member that fixes the driving portion from the inner diameter side of the pipe joint and inscribes the bottom portion of the bent portion of the pipe joint;
a second inscribed member that fixes the driving portion from the inner diameter side of the pipe joint and inscribes the bent portion of the pipe joint;
a third inscribed member that fixes the driving portion from the inner diameter side of the pipe joint and inscribes the outer side of the bent portion of the pipe joint;
a shaft that connects the first inscribed member and the drive unit;
a handle that rotates the shaft and presses the first inscribed member to the bottom;
a first screw shaft connecting the second inscribed member and the shaft;
a second screw shaft connecting the third inscribed member and the shaft;
A beveling machine characterized by having: An extendable arm that adjusts the installation position of the cutting blade,
a lock mechanism for fixing the arm;
The beveling machine according to claim 1, characterized by comprising: A gear that rotates together with the shaft is installed on the shaft, and a screw mechanism is installed on the first screw shaft and the second screw shaft to convert the rotational force of the gear into a force that moves horizontally. The beveling machine according to claim 1, characterized in that: 2. The beveling machine according to claim 1, wherein the length C2 of the second inscribed member and the length C3 of the third inscribed member have a relationship of C2≧C3. A fixing method for a beveling machine for fixing a drive unit for rotating a cutting blade that cuts an end of a pipe joint from the inner diameter side of the pipe joint, comprising:
a step of fixing a first inscribed member connected to the driving portion via a shaft and inscribed in the bottom portion of the bent portion of the pipe joint from the inner diameter side of the pipe joint by rotating the shaft;
A second inscribed member inscribed inside the bent portion of the pipe joint is rotated to extend a first threaded shaft connecting the second inscribed member and the shaft to extend the inner diameter side of the pipe joint. a step of fixing from
A third inscribed member inscribed on the outside of the bent portion of the pipe joint is rotated to extend a second threaded shaft connecting the third inscribed member and the shaft, thereby extending the inner diameter side of the pipe joint. a step of fixing from
A fixing method for a beveling machine, comprising:

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