JPH10244322A - Branch tube collar making device of t-type connecting tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a connecting collar to be made along an inclining angle being along the inclining angle of cos-curve of a branch tube circumference edge and along the outer circumferential curve face of a main tube. SOLUTION: The rotation and lift means of a machining table 15 is composed by installing the table 15 freely rotating and lifting with individual servo motors MY, MZ on a base stand 10. The branch tube P2 circumference edge inclining means of a machining roller 21 is composed by rotating an arm 19 on the base stand 10 around the center with the servo motor MT and inclining it along the moving direction around the branch tube edge. The inclining means along the outer circumferential face of the main tube of the machining roller is composed by inclining with rotating the machining roller around the line of crossing to the axial center of rotation of the arm with the servo motor MR. Respective servo motors are synchronized mutually and controlled, the machining roller is moved around the circumference edge of the branch tube P2 along its undulation, by being inclined to the slope and inclining angle of the undulation, the branch tube circumference edge is formed into the connecting allowance (collar) curved in a prescribed angle vertically and horizontally over the total circumference.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch pipe of a T-type connecting pipe for forming a connection margin for connecting a branch pipe as a branch pipe to a main pipe of the duct, for example, when manufacturing a branch pipe of an air duct. The present invention relates to a flange setting device.

[0002]

BACKGROUND ART For example, in the piping of the air duct, the branch pipe, as shown in FIG. 16, is performed by connecting a branch pipe P ₂ on T type on the side surface of the main pipe P _1. During this connection, the flange-shaped connection margin a by bending required width outward is formed its edges to the periphery of the lateral pipe P ₂ (connection edge), the main pipe and the connection allowance a by spot welding or the like or rivet connecting the branch pipe P ₂ is fixed to P _1.

[0003] At this time, the periphery of the branch pipe P ₂ main pipe P ₁
Has a cos curve (curve) that rises and falls in accordance with the outer peripheral curved surface of the pipe. In order to make a connection without gap between the two pipes P ₁ and P ₂ , a connection margin a whose outer edge is bent outward is connected. that (against cracking) along the outer circumference curved surface of the main pipe P _1, FIG. (a), (b) alpha degrees with respect to the branch pipe axial direction as shown in (hereinafter, tilt angle of the flange), the branch pipe circumference It is necessary to incline by β degrees (hereinafter, the inclination angle of the flange) with respect to the direction, and the angles α and β change continuously along the connection edge, and
It also differs depending on the diameters D and d of both tubes P ₁ and P ₂ .

[0004] Connection margin (flange) a of such a complicated shape
Is conventionally sandwiched required width of the periphery of the branch pipe P ₂ a pair of rollers, with rotating the roller, the required angle branch P ₂ manually alpha, by turning in a fixed direction while tilting in the β formation or, respectively prepared each in the shape suits mold periphery of each branch pipe P ₂ (flange) is formed by bending using the mold.

However, the means by the pair of rollers, with accompanying risk for tasks such as fly branch P ₂ by the roller rotational force, for directing inclined branch pipe P ₂ by intuition human, finished hardly becomes constant, Poor finishing accuracy.
In addition, skill is required to obtain a usable connection allowance a, and improvement is desired today when the number of skilled workers is reduced.

Further, the means using molds, without requiring skilled relatively, although it is possible to obtain a connection margin a certain finishing accuracy, the number of combinations of the main pipe P ₁ and the branch pipe P ₂ A mold is required. For example, if there are 14 types of P ₁ and P ₂ , 14 × 14 = 196 patterns, and 196 molds are required. The increase in the number of dies increases the manufacturing cost of the dies and increases the cost burden.

Under such circumstances, as a technique for automatically forming the connection margin a, there is a technique disclosed in Japanese Patent Application Laid-Open No. Hei 6-339732. This technique, a roller which sandwiches the periphery of the branch pipe P _2, is moved to follow the periphery thereof, so along the outer curved surface of the main pipe P _1, by inclining the roller to the desired angle, a continuous connection allowance a At the required angle α with respect to the tube axis.

[0008]

The technique disclosed in the above-mentioned publication is excellent in that the connection margin a can be formed automatically, but the bending roller changes the angle β with respect to the branch pipe circumferential direction. because it does not support, the rolling bending roller is not smoothly performed, on top lacks workability smoothness, by not its corresponding, the problem of connecting margin a is not along snugly on the outer peripheral curved surface of the main pipe P ₁ is there.

Further, the bending roller generally consists of a pressure roller against cracking in the peripheral inner surface of the lateral pipe P _2, the receiving rollers against cracking in its peripheral outer surface, branch pipe in the roller receiving the pressure roller This is a configuration in which pressure contact is made with the peripheral edge interposed.
In this configuration, the technique disclosed in the above publication discloses that, when the peripheral edges of the branch pipes are clamped, the peripheral edge is bent at a time by a pressure roller to a required angle α, and the bending accuracy, that is, the finishing accuracy is low. In addition, when the tube thickness is increased, the tube cannot be bent. That is, the connection margin a cannot be formed.

SUMMARY OF THE INVENTION It is an object of the present invention to form a connection margin a exactly along the outer peripheral curved surface of the main pipe.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a branch pipe which is connected to a side surface of a main pipe in a T-shape by clamping a peripheral edge of the branch pipe with a bending roller. An apparatus for moving a roller over the entire circumference of a branch pipe and bending the circumference outward to form a flange, wherein the rotation moves the edge bending roller and the circumference of the branch pipe relatively around the edge. Means, elevating means for vertically moving the edge bending roller and the branch pipe relatively, vertical tilting means for vertically tilting the edge bending roller along a moving direction around the edge, and the edge Lateral tilting means for tilting the bending roller in a direction transverse to the moving direction around the edge, wherein the edge bending roller is moved relative to the branch pipe periphery along the periphery of the branch pipe by the rotating means. Up and down relative to the branch pipe by the lifting means And tilted in accordance with the inclination angle of the undulation by the vertical tilting means, and tilted in accordance with the connecting curved surface of the main pipe by the horizontal tilting means. The configuration is such that the peripheral edge of the branch pipe is bent at a required width and a required angle over the entire circumference by the edge bending roller at a required width (claim 1).

In this manner, the edge bending roller is tilted corresponding to the angle α with respect to the branch pipe axial direction and the angle β with respect to the branch pipe circumferential direction, and the flange (connection margin a) is formed on the outer peripheral curved surface of the main pipe P _1. It must be inclined along. At this time, by gradually setting the angle α of the edge bending roller with respect to the branch pipe axis direction to a required angle, that is, by performing edge bending stepwise, the operation can be performed smoothly and accurately, and ,
Even thick branch P ₂ are possible its collar formation.

[0013]

According to an embodiment of the present invention, the rotating means and the elevating means are provided on a base such that the fixed table for the branch pipe is rotatable and vertically movable about the axis of the branch pipe. The rotation and elevation are each performed by a separate servo motor, and the vertical tilting means supports a bearing of the edge bending roller on an arm extending forward from a support on the base, and the arm includes: The servo motor is configured to rotate around the support point of the arm of the column to tilt the edge bending roller in the vertical direction along the moving direction around the edge, and the lateral tilting means is driven by the servo motor. The edge bending roller is configured to rotate around a line perpendicular to the rotation axis of the arm and to be inclined in the lateral direction, and the servo motors are controlled by the controller in synchronization with each other. The edge bending roller is moved along the undulation around the edge of the branch pipe, and is tilted in accordance with the inclination angle of the undulation and the connecting peripheral curved surface of the main pipe, so that the peripheral edge of the branch pipe is formed all around. It is possible to adopt a configuration in which the connection margin is formed by being bent to a required length and width at a required width over the entire width (claim 2).

The operation of the position (angle) control by the servomotor is accurate, and therefore, a highly accurate flange (connection margin) can be obtained.

As a specific embodiment of the edge bending roller,
The pressure roller comprises a pressure roller applied to the inner peripheral surface of the branch pipe, and a receiving roller applied to the outer peripheral surface of the branch pipe.The pressure roller has a rotation axis along the inner peripheral surface of the branch pipe. A configuration may be adopted in which the rotation axis is positioned so as to be orthogonal to the outer peripheral surface of the branch pipe, and one of the two rollers can advance and retreat with respect to the other.

With this configuration, the pressure roller is pressed against the receiving roller via the peripheral edge of the branch pipe.
At this time, since the receiving surface of the receiving roller is a flat surface in the tangential direction of the peripheral edge of the branch pipe, the pinching point of both rollers is also at an accurate position, and therefore, the bending operation can be performed with high accuracy.

[0017]

FIG. 1 is a schematic perspective view of one embodiment, and FIGS.
1 shows a front view, a plan view, and a right side view of the embodiment. In each of these figures, a table support 11 is fixed to a front portion of a base 10, and a table support member 12 is mounted on the support 11.
Are provided so as to be liftable and non-rotatable. Support member 12
Is fit screws into the bearing portion 12a screw shaft 13, by the screw shaft 13 via the endless belt 14 is rotated by a servo motor M _Y, the support member 12 moves up and down.
The table support member 12 and the processing table (branch pipe P ₂ fixed table) 15 is rotatably provided, the branch pipe P ₂ on the machining table 15 is fixed on the same shaft by suitable means. This machining table 15 has a servo motor M _Z
As a result, it is rotated to a required angle via the rotation shaft 15a and the endless belt 15b.

At the rear of the base 10, a slide plate 17 on which a support 16 is provided is provided movably back and forth via a rail 18a, and a screw shaft 18 is mounted on a bearing 16a below the support 16. is screwed, by the screw shaft 18 is rotated by a servo motor M _X, struts 16 to move back and forth. At the top of column 16 is rotatably mounted V-shape of the arm 19 extending forward through the bearing 16b is at the center, required angle (example as in FIG. 4 the arm 19 by the servo motor M _T Then left and right 4
5 degrees). This servomotor M _T and the arm 19, vertical tilting means is configured according the claims.

[0019] Between the two ends of the arms 19 are inclined shaft 20 is rotatably provided through a bearing 20a, the shaft 20 is rotated to the required angle by the servo motor M _R. The center of the shaft 20 is on the rotation axis of the arm 19, and the processing unit U is provided at this position. The servo motor M _R , the bearing 20 a and the shaft 20 constitute a laterally tilting means described in the claims.

The processing unit U includes a processing roller 21, a receiving roller 22, a processing roller rotating servomotor M _S ,
And an air cylinder 23 for pressing the receiving roller 22.
Servomotor M _S is fixed to the casing 24, to rotate the working roller 21 at a predetermined speed via a shaft 21a therethrough. The receiving roller 22 is rotatably mounted on a T-shaped oscillating body 25, and the oscillating body 25 is pushed by a rod 23 a of an air cylinder 23 so that the receiving roller 2 is rotated.
2 is brought close to (pressed against) the pressure roller 21 (see FIG. 5B). Normally, the receiving roller 22 is retracted by a spring (not shown), and a branch pipe P is provided between the receiving roller 22 and the processing roller 21.
_A gap is formed in which the periphery of ₂ can smoothly enter (see FIG. 3A).

The processing roller 21 has a cylindrical shape and its rotating shaft 2
1a has a direction along the peripheral wall of the branch pipe P _2, whereas,
Receiving roller 22, and the cut's shape all around the frustoconical base portion, the rotation center axis is perpendicular to the peripheral wall of the branch pipe P _2. Therefore, when the rollers 21 and 22 pressed against interposed the peripheral wall of the branch pipe P ₂ (FIG. 5 (b)), the pressure roller 21 is pressed against the flat surface of the receiving roller 22 through the branch pipe wall This means that the pressure contact is also accurate.

Each of the servo motors M _X , M _Y ... M _S is controlled by a control panel (microcomputer) not shown. That is, for example, M _X is, 0.01 mm / p
ulse resolution, and the movement range of the support 16 is 2
80 mm, the maximum speed is 250 mm / sec. M _Y
Is controlled at a resolution of 0.01 mm / pulse, and the processing table 15 is moved up and down within a range of 210 mm. M
_Z is controlled at a resolution of 0.005 ° (degrees) / pulse to rotate the processing table 15. M _T is 0.
The arm 19 is controlled at a resolution of 024 ° / pulse, and rotates in a range of ± 45 ° with respect to the horizontal direction. M
_R is controlled at a resolution of 0.024 ° / pulse to rotate the processing unit U (shaft 20). M
_S rotates the processing roller 21 under the control of a resolution of 0.012 ° / pulse.

Next, each servo motor M based on the relationship between the rotation angle θ of the branch pipe P ₂ (working table 15) and the elevation / rotation / rotation / tilt / tilt of the working unit U (rollers 21, 22).
Control of _X ......, With reference to FIGS. 6 to 14, the required one rotation of the branch P ₂ angle theta _0, for example, 10
When divided into degrees (θ ₀ = 10 °) intervals, the cos curve C of the periphery of the branch pipe P ₂ becomes as shown in FIG. 6, and in this curve C, the angle β of the rollers 21 and 22 with respect to the branch pipe circumferential direction is set at each point. And the feed amount S of the processing roller 21 in the circumferential direction are the curve lengths between the divided angles. Roller 2
The angles α of the pipes 1 and 22 with respect to the axial direction of the branch pipe are tangent angles of the peripheral surface of the main pipe P _{1 at} respective points. These angles θ ₀ , α,
Control based on β etc.

That is, for example, the main pipe P ₁ : 400 mm
Diameter, the branch pipe P _2: When performing a peripheral flange formation process of the branch pipe P ₂ of the T-tube 300mm diameter, each of the servo motors M _X ......
Is controlled as follows.

The servomotor M _X is for setting the advance distance of the struts 16, the operation is advance distance = reference distance - branch radius (reference distance = distance between the machining table center and the machining unit standby position: 1)
It is assumed that e = 0.01 mm (see FIG. 8).

[0026] Note that after advancement of the struts 16, the servo motor M _X control microcomputer board each servomotor _{(M Y, M R, M} T, M S, M Z) 8000 pulses criteria to the control microcomputer board Transmit the signal at a constant frequency. This is because the M _X after the end positioning of the struts 16 is not driven, can be used the input signal (pulse) as a reference signal, using the call to the reference signal of the other servo motor.

The servo motor M _Y is _mounted on the machining table 1
5 to correspond to the branch pipe P ₂ perimeter, and it is intended for lifting in accordance with the curve C, the setting operation of the time, the elevating distance = reference distance - top apex of the length of the branch pipe (reference distance = Table the distance between the standby position and the processing roller position: fixed, top apex length of the branch pipe = lowest point length + main radius - (main radius ² - branch pipe radius ²⁾ of the square root, branch pipe nadir length: branch pipe 1 pulse = 0.01mm
(See FIG. 9).

The control corresponding to the peripheral curve C is as follows:
As shown in FIG. 10, following the length H of the perpendicular line drawn at the intersection of the outer circumference of each division point and the main pipe P ₁ on the peripheral circumference of the branch pipe P ₂ from the center line of the main pipe P ₁ (x ₂ axis) The difference (H
n ₋₁ −Hn) is defined as a displacement amount. H = (A ² − (B · si
n.theta) ²⁾ the square root, H; perpendicular length, A; radius of the main pipe P _1, B; radius of the lateral pipe P _2, theta; split point on the tube circumference branch pipe P ₂ and the branch pipe central point of (Rotation angle) between the dividing line connecting the center line and the center line (y-axis).

Therefore, the displacement amount from the highest point H ₀ of the curve C to the next position H ₁ rotated by 10 degrees is H ₀ = (200 ² − (150 sin 90) ² ) square root = (200 ² −150 ²⁾ the square root _{of) = 132.29, H 1 = (} 200 2 - (150sin80) 2) square root = - from ^{(200 2 (150 × 147.72)} 2) the square root = 134.83, (H ₀ -H ₁ ) = 132.29-134.83 = -2.
54, the table 15 rises by 2.54 mm. At this time, since one pulse is 0.01 mm, 2.5 /
It corresponds to 0.01 = 250 pulses. Similarly, 10
The displacement for each ° is obtained.

The servo motor M _Z is connected to the machining table 15
Since one pulse is set to 0.005 °, to rotate 10 °, 10 / 0.00
5 = 2000 pulses. That is, the machining table feed 2000 pulse signals to the servo motor M _Z 1
Turn 0 °.

The servomotor M _T is used to set the inclination angle β of the machining roller 21, the processing roller 21 must be tilted in accordance with the inclination of the peripheral edge of the branch pipe P _2, between each division point adjacent curve The inclination angle of C is obtained and set as the inclination angle β. For example, as shown in FIG. 11, a circumferential length L between position 0 and position 1 is L = 300π / 36 = 26.18, an amount of height displacement = H ₁ −H ₀ = 2.54, and an inclination angle is β. Then tan
β = 2.5 / 26.18 = 0.09549 to β = 5.
45 °, and one pulse is 0.024 °.
45 / 0.024 = 227 pulses.

The servo motor M _R tilts the processing roller 21 toward the outside of the branch pipe P ₂ , and sets a flange angle (tilt angle).
adjusts the alpha, is perpendicular line drawn from the tangent intersection point of intersection of the dividing point of the branch pipe P ₂ and the outer circumferential surface of the main pipe P ₁ to the main pipe centerline (x ₂ axis) as shown in FIG. 12 The angle formed is α, and α is obtained from the following equation. cosα = h /
A (h; length of a perpendicular drawn from the division point on the circumference of the branch pipe to the center line of the branch pipe, A: radius of the main pipe). As can be understood from FIG. 13, from α = 90 ° −γ and α ′ = 90 ° −γ, α = α ′, and cosα ′ = h / A = cosα. The above formula does so.

[0033] Here, if the tilt angle at the position 0 and _{α 0, cosα 0 = h 0} /200, h 0 = 150sin
90 = 150, becomes _{cosα 0 = 150/200, α} 0 = 41.41 °, the inclination angle alpha ₁ in the same way position _{1, cosα 1 = 150sin80 / 200 =} 0.
From 7386, α ₁ = 42.39 °, and since one pulse is 0.024 °, at position 0, 41.41 / 0.0
It is tilted by 24 = 1725 pulses and displaced from position 0 to position 1 by 42.39-41.41 = 0.98 °.
This is equivalent to 0.98 / 0.024 = 41 pulses.

The servo motor M _S is connected to the processing roller 21
Is set based on the circumferential length of 10 ° and the amount of vertical displacement of the table 15. That is, as shown in FIG. 14, the circumferential length of 10 ° = 300π / 36.
= 26.18, Y-axis displacement from position 0 to position 1 =
Assuming that the feed amount from the position 0 to the position 1 is S, the square root of S = (26.18 ² +2.54 ² ) = 2
6.3, where the outer diameter of the processing roller 21 is r, the circumference of the processing roller 21 is πr, and 26.3 mm is 360 × 26.3 / πr when converted to a rotation angle.
Since the pulse is 0.012 °, 360 × 26.3 /
πr / 0.012 (pulse).

The respective servo motors M _X are controlled as described above. Based on this control, the peripheral flange processing of the branch pipe P ₂ is performed as follows. That is, first, the control panel to enter information in diameter of the main pipe P _1, the branch pipe P _2, the control panel on the basis of this information, the microcomputer 10 of the branch pipe P ₂
Each displacement amount of the table height, the flange tilt angle α, the processing unit (flange) tilt angle β, the processing roller rotation angle, and the rotation angle θ of the processing table 15 at each division point of ° is calculated and stored.

Before and after inputting this information, the processing table 1
5 is placed to secure the branch pipe P ₂ on. At this time, the main pipe P
₁ , the edge of the mounting pipe (cos curve-shaped peripheral edge) is set to the upper side, and the highest vertex which undulates and draws the cos curve is processed unit U
(Rollers 21 and 22)
Fit center of the table center and the branch pipe P ₂ (see FIG. 7).

Next, based on the input information, the branch pipe P ₂
Of the support 16 (the processing unit U) is calculated from the diameter of the servo motor M _X
Send to The outgoing servomotor M _X is to advance the column 16 is driven to position the machining unit U to the periphery just above the branch pipe P _1. At this time, the gap between the receiving and the processing roller 21 of the unit U roller 22 is positioned directly above the periphery of the branch pipe P ₂ on the work table 15.

If it is located directly above, the diameter of the main pipe P ₁ and the branch pipe P
The elevating distance of the machining table 15 from the _second diameter is calculated, issues a pulse signal corresponding to the distance to the servo motor M _Y.

By this transmission, the servo motor M _Y rotates by a predetermined number of pulses to drive the screw shaft 13 and raise the working table 15 to a predetermined height. At this time, the uppermost apex of the periphery of the branch pipe P ₂ receives the processing roller 21 roller 22
Is set so as to enter about 8 mm as a connection margin a.

[0040] If it is the periphery of the branch pipe P ₂ between the rollers 21 and 22 set (FIG. 5 (a)), by operating the air cylinder 23, sandwiched by the roller 22 receives a branch pipe periphery and the processing roller 21 ( FIG. After this, each servo motor M _Y ,
M _Z, M _T, while M _R, the control microcomputer board M _S is for receiving 8000 pulse reference signal from the above-mentioned M _X control microcomputer board, described above in response to the divided angle theta ₀ = 10 ° Output the number of pulses based on the result calculated in advance for each drive shaft (screw shaft 13, shaft 1
5a, center axis of arm 19, shaft 20, axis 21a)
Drive.

[0041] With this drive, the processing table 15 performs lifting and rotating a predetermined amount, the processing unit U performs the required tilt-leaning inclination-tilt angle along the outer circumference curved surface of the main pipe P ₁ beta, the α A flange a is formed. In other words, the microcomputer board for controlling each servo motor receives the reference pulse of 8000 pulses indicating the displacement of 10 ° transmitted from the microcomputer board for controlling the reference axis (M _x ), and during that time, receives the above-mentioned calculation result. .. Are transmitted to the respective servo motors M _Y , M _Z.
...) Are sequentially driven in synchronization with each other to perform the collar processing over the entire circumference of the curve C. This processing may be completed in one rotation, but it is also possible to complete the processing in a plurality of rotations depending on the thickness of the pipe. Rather, the processing can be performed more smoothly and with higher precision. With three-turn processing, a pipe having a thickness of 0.1 to 0.4 mm could be processed smoothly.

The above example is main P ₁ is a straight tube, In other arithmetic expressions, it is possible to accurately process any taper pipe P ₁ shown in FIG. 15. That is, the main pipe P ₁ is also a variety of mounting portions, such as when the mounting portion of the branch pipe P ₂ is complicated as the tapered pipe, calculation formula can be processed by the same way exactly at obtain.

The processing table 15 stops rotating when it has turned 1/4 from the initial value. At this time, the processing unit U
Is located at the lowest part of the undulation of the peripheral edge of the branch pipe, and as shown in FIG. 5C, the flange (connection margin) a is in a state of being inclined by 90 °. In this state, since the gap between the rollers 21 and 22 is horizontal, if the receiving roller 22 is separated and retreated in the horizontal direction (if the support 16 is retracted), the processing unit U can easily separate from the flange a.
When the processing is completed, the air cylinder 23 is released, and the column 16 retreats to the original position (reference position). Thereafter, repeated peripheral flange machining of the lateral pipe P ₂ repeats the action of more than.

[0044] Further, the processing table 15 is prepared to replaceable from among various sizes (diameter), the branch pipe P ₂ in size, taking into account the interference degree, etc. of the other components, optimal Set things. Each drive shaft 13, 15a...
As a closed-loop control servo mechanism, high-precision positioning is performed to stabilize machining accuracy. Furthermore, the support 16
A ball screw mechanism is adopted for the drive shaft (screw shaft) 18 and the elevating shaft (screw shaft) 13 of the processing table 15 so that the position setting repeat accuracy is high.

The processing roller 21 may be able to advance and retreat with respect to the receiving roller 22 instead of the receiving roller 22.
Further, such as by causing back and forth movement of the slide plate 17 causes the circumferential movement of the struts 16 on the slide plate 17, if a machining unit U for movement in a circular shape along the periphery of the branch pipe P _2, the machining table 15 need not be a rotating one. Furthermore, the strut 16 is divided into two in its length direction,
The two parts are connected by a Baume screw mechanism,
If the processing unit U can be moved up and down, for example, by making it extendable, the processing table 15 that does not move up and down can be adopted.

[0046]

As described above, according to the present invention, it is possible to smoothly manufacture a branch pipe with a flange (connection allowance) which closely follows the outer peripheral curved surface of the main pipe. That is, the productivity, safety and quality of the branch pipe flange are greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an embodiment of a branch pipe flange setting device for a T-type connecting pipe according to the present invention.

FIG. 2 is a front view of the embodiment.

FIG. 3 is a plan view of the embodiment.

FIG. 4 is a right side view of the embodiment.

FIG. 5 is an explanatory view of the operation of the flange processing unit of the embodiment.

FIG. 6 is an explanatory view of a collar processing operation of the embodiment.

FIG. 7 is an explanatory view of a collar processing operation of the embodiment.

FIG. 8 is an explanatory view of a collar processing operation of the embodiment.

FIG. 9 is an explanatory view of a collar processing operation of the embodiment.

FIG. 10 is an explanatory view of a collar processing operation of the embodiment.

FIG. 11 is an explanatory view of a collar processing operation of the embodiment.

FIG. 12 is an explanatory view of a collar processing operation of the embodiment.

FIG. 13 is an explanatory view of a collar processing operation of the embodiment.

FIG. 14 is an explanatory view of a collar processing operation of the embodiment.

FIG. 15 is a perspective view of another example of the main pipe.

16A is a perspective view of a T-type connecting pipe, and FIG. 16B is a cross-sectional view of a connecting portion of the same branch pipe.

[Explanation of symbols]

P ₁ main P ₂ branch pipe a flange (connection margin) alpha flange inclination angle β flange inclination angle _{M X, M Y, M Z} , M T, M R, M S servomotor U processing unit 10 base plate 13 machining table lifting Screw shaft 15 working table 15a working table rotating shaft 16 support 18 support shaft longitudinal movement screw shaft 19 working unit tilting arm 20 working unit tilting shaft 21 working roller 22 receiving roller 23 air cylinder

Claims (3)

[Claims] 1. A sandwich with crimping the peripheral edge of the branch pipe P ₂ of the lateral pipe P ₂ which is connected to the T-type on the side surface of the main pipe P ₁ roller, moving over the edge bending roller to the branch pipe periphery all around is a device for issuing flange bending the peripheral edge outwards, and rotating means for relatively moving the peripheral edge of the edge-folding roller and the branch pipe P ₂ around its edge, said crimping rollers a lifting means for moving said branch pipe P ₂ relatively vertically, and a vertical tilting means for tilting the longitudinal direction of the hemming roller along the moving direction around the rim, the rim around the edge bending roller and a transverse tilting means for tilting with respect to the movement direction in the lateral direction of the hemming roller, with relatively moving the branch pipe circumference along the circumference edge of the branch pipe P ₂ by the rotating means, said lifting means Accordingly, the peripheral edge is moved relative to the vertical direction as the branch P ₂ Bend down to is associated, and, together with the inclined so as to correspond to the inclination angle of the undulations by the longitudinal tilting means, inclined so as to correspond to the connecting curved surface the main pipe P ₁ by the lateral tilting means, the branch pipe by its crimping rollers branch pipe flange out apparatus T type connection tube over the P ₂ edges all around, characterized in that bending vertically and horizontally required angle in a required width. 2. The method according to claim 1, wherein the rotating means and the elevating means are mounted on a base.
Above, the branch pipe P ₂ a fixed table 15 of the branch pipe P ₂
Provided in freely rotatable and the lift about the axis, the rotation and lifting separate each servomotor M _Z, is configured to form a M _Y, the vertical tilting means, forward from the posts 16 on the base 10 the hemming roller and the support, the arm 19 to arm 19 which extends, is rotated by a servo motor M _T around supporting point of the arm 19 of the strut 16, the movement direction around the edge of the edge-folding rollers The horizontal tilting means rotates the edge bending roller around a line orthogonal to the rotation axis of the arm 19 by the servo motor M _R , and are configured as inclined, each servo motor is controlled in synchronism with each other by the controller, together with the crimping roller is moved along the undulations around the edge of the branch pipe P _2, its The inclination angle and the angled in correspondence with the connection circumferential curved surface of the main pipe P ₁ undulations, characterized in that the branch pipe peripheral connection allowance bent vertically and horizontally required angle in a required width over the entire circumference is formed The branch pipe flange forming device for a T-type connection pipe according to claim 1, wherein Wherein said crimping rollers includes a branch pipe pressure roller 21 against cracking in the peripheral inner surface of the P _2, consists receiving rollers 22 for the covering divided into branch pipes peripheral outer surface, the pressure roller 21 that along the rotation axis is the periphery the inner surface of the lateral pipe P _2, the receiving roller 22 is positioned so that its rotational axis is perpendicular to the peripheral outer surface of the lateral pipe P _2, the two rollers 21,2
3. The branch pipe flange forming device for a T-type connecting pipe according to claim 1, wherein one of the two is movable with respect to the other. 4.