JP3538125B2 - Steel pipe combined processing equipment and steel pipe processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined steel pipe machining facility, and more particularly to a combined steel pipe machining facility for machining a joint portion of a steel pipe for piping and a method for machining a steel pipe.

[0002]

2. Description of the Related Art Steel pipes are widely used as pipes for transporting fluids. In this case, steel pipes cut to a predetermined length are joined to form a desired pipe system. As a joining method, a method is used in which a groove is formed at an end of a steel pipe, and ends of two steel pipes are abutted to weld an outer periphery of a joint.
Further, a method of welding a flange or the like to an end portion of a steel pipe in advance to form a steel pipe with a flange, and tightening the flanges with bolts and nuts on site is also performed. In addition, a method is also used in which a male screw is cut out on the outer surface of the pipe end and joined with a sleeve-type coupling having a female screw cut on the inner surface.

When a branch pipe is provided in a pipe, a hole is made in a side surface of the steel pipe using a machine or gas, and a short pipe adapted to the hole is welded.

[0004]

In many cases, pipes are installed at a high place, and the method of welding joints on site requires work on a scaffold, so that it is impossible to weld the entire circumference of the pipes. It is also necessary to take such measures, and there is a problem that unevenness or displacement occurs in the welded portion, and there is also a problem of danger to the surroundings due to sparks or the like. In addition, when the pipe is replaced or the pattern is changed, it is not easy because the pipe needs to be cut once and then re-welded.

[0005] Joining using a steel pipe with a flange is relatively easy to work at a high place because the bolts and nuts can be tightened. However, it is necessary to weld the flange to the steel pipe in advance, and the processing accuracy is reduced. If there is a problem, problems such as a liquid leak or a gas leak after the installation and a failure to provide piping in a predetermined path occur.

Recently, a flange is not welded directly to a steel pipe, but a loose flange whose inner peripheral surface is slidable along the outer surface of the steel pipe is fitted to the steel pipe, and then the end of the steel pipe is connected to the outside of the steel pipe. In the field, there is a method in which the packing is sandwiched between the flared parts to be joined, the flared part is sandwiched with the loose flange, and the bolts and nuts are tightened with bolts and nuts. It has come to be adopted as a method that can perform piping work.

[0007] Flare processing has been performed by applying a conventional processing machine, but as a dedicated machine, a single-stage processing head having a low-angle widening conical roller and a 90 ° wide-angle widening conical roller. And a two-stage processing head having the following. FIG. 19 is a schematic partial plan view showing the vicinity of a processing portion of a conventional steel pipe flange processing apparatus.

A slide unit 82 which can be moved up and down on the base (not shown) by operation of a hydraulic cylinder.
1 is a one-stage roller head 831 which can be moved in the left-right direction of the drawing by the operation of a hydraulic cylinder and each is driven to rotate.
And a two-stage roller head 841. A one-stage processing head 832 having a plurality of low-angle widening conical rollers is attached to the first-stage roller head 831 so as to be freely rotatable. A two-stage processing head 842 having a plurality of conical rollers for high-angle expansion is freely rotatably attached to the head 841.

The first-stage roller head 831 is aligned with the tip of the steel pipe 810 fixed to the clamp mechanism 881 by moving the slide unit 821,
31 is advanced while rotating the first stage processing head 832
Is further advanced while contacting the tip of the steel pipe 810, the tip of the steel pipe 810 is expanded to an angle corresponding to the angle of the conical roller as shown in the figure. Next, the first-stage roller head 831 is retracted, the slide unit 821 is moved to align the second-stage roller head 841 with the tip of the steel pipe 810 fixed to the clamp mechanism 881, and the second-stage roller head 841 is advanced while rotating. When the two-stage processing head 842 is further advanced while being in contact with the tip of the steel pipe 810, the tip of the steel pipe 810 is expanded to 90 ° corresponding to the angle of the conical roller as shown by the dotted line in the figure. The use of this steel pipe flange processing apparatus has made the flaring process more efficient.

However, the steel pipe used for the cold and hot water pipes has a hot-dip galvanized inner surface, and the flare process causes a peeling phenomenon of the plating film, and the hot-dip galvanizing film flaps due to pressing force and ironing force. There is a problem that the shape becomes uneven, and the sealing performance of the joint surface is deteriorated. For this reason, the hot dip galvanized coating inside the pipe end is removed by grinding with a grinder or sandpaper before flaring, or the plating layer is forcibly removed using a sander or the like after flaring to perform smooth finishing. The way was being taken.

To improve the efficiency of this work, Japanese Patent Application Laid-Open
Japanese Patent Application Publication No. 146623 discloses a steel pipe flange forming apparatus in which a scraper is provided in a two-stage roller head, and the joint surface is ground simultaneously with the expansion to 90 ° by the two-stage processing head. FIG.
It is a schematic diagram which shows the vicinity of the processing part of the flange processing apparatus of the steel pipe disclosed by No. 3, (a) is a partial plan view, (b)
Is a partial front view. A scraper 9 held by a scraper holder 952 between two two-stage machining heads 942
51 are arranged, and the scraper holder 952 is 2
It is held by a sleeve 954 provided on the step roller head 941 via a spring 955. When the two-stage roller head 941 is advanced toward the tip of the steel pipe 910, the two-stage processing head 942 moves the tip of the steel pipe 910 to 90 degrees.
At the same time, the scraper 951 is elastically pressed against the joint surface to grind the joint surface. This device has greatly improved the work of grinding the joint surfaces.

On the other hand, in a piping construction site, the arrangement of the piping system diagram and the actual site are often different or need to be changed in many cases. In the case of (1), it was necessary to return to the processing factory to make corrections and remanufacture, and there was a strong demand for flaring at the worksite. However, the flange processing apparatus for steel pipes as shown in FIGS. It is necessary to move a single-stage processing head having a conical roller for use and a two-stage processing head having a conical roller for widening the angle of 90 ° to the front of the fixed steel pipe, so that the form is large. Due to its heavy weight, it was difficult to bring it to the site.

Further, burring processing for providing a branch pipe in a pipe is performed by a burring processing machine.
Pilot hole processing and drawing head processing had to change the processing tool for each processing pipe size, and the branch pipe end face processing was the same and the processing process was complicated, so it was impossible to process without a dedicated processing machine .

Further, in order to protect the gas pipe and the water supply pipe from electric corrosion and corrosion, the inner and outer surfaces of the steel pipe are lined with hard vinyl chloride or the like. After that, the pipe was lined up to the inner and outer surfaces of the pipe and a part of the flange, but it was necessary to rework at the processing plant if a situation that did not fit the dimensions of the piping site occurred. For this reason, there has been a problem that pipe construction has to be interrupted for several days.

[0015] Further, in the conventional pipe construction, in the case of joining of pipes by welding, a welding joint is supplied by a manufacturer after beveling. However, since a required length of a steel pipe is not constant, it is required from a manufacturer. Usually supplied without beveling, the beveling process must be done by the user with a large lathe at the factory or by hand using a grinder, and at the construction site the beveling is done manually. There is a problem that a long time work is required to perform the processing, and the finish becomes uneven.

An object of the present invention is to provide a compact and easy to move, not only flaring of a steel pipe, but also forming of a branch pipe, external thread cutting, cutting and peeling of a lining, grinding of a flared surface and opening of a tip of a steel pipe as necessary. An object of the present invention is to provide a steel pipe composite processing facility capable of pre-processing and a processing method therefor.

[0017]

According to a first aspect of the present invention, there is provided a multi-piece steel pipe machining apparatus according to the first aspect, wherein two ends of the two steel pipes are connected by a loose flange whose inner peripheral surface is slidable along the outer wall of the steel pipe. A steel pipe processing device and a steel pipe holding device for performing a flare process of bending an end of the steel pipe to the outside of the steel tube so as to be able to fasten a portion, and a steel pipe holding device. A first processing head that expands the portion to a first position in the middle of the flange, and a second processing head that presses and deforms the end of the steel pipe expanded to the first position to a predetermined flange position. The steel pipe holding device includes a replaceable clamp chuck that clamps the outer surface of the steel pipe from both sides. The steel pipe processing equipment is mainly driven by a drive
A shaft and a rotation that is fixed to the main shaft and rotates with the main shaft
The frame and the first processing head unit are fixed at predetermined fixed points.
Guide grooves for turning and sliding around the turning center
With a slide that can be fixed slidably in the radial direction on the rotating frame.
Ride unit and its slide unit
And two guide grooves provided in the slide unit.
Are guided by two guide rollers engaging with
On the slide unit due to the expansion and contraction of the hydraulic cylinder
From the first position to the second position.
Processing head unit and first processing head unit thereof
At the first position of the first processing head unit and the main shaft.
A freely rotatable circle that is mounted to be parallel
A first processing head in the form of a column roller, wherein rotation of a main shaft is performed;
And the turning and sliding operation of the first machining head unit
The pipe end of the steel pipe whose first processing head contacts the inner surface
A first processing head that expands to a first position in the middle of the flange
And one end is pivotally supported on the slide unit.
The other end of the arm is pivotally supported by the first machining head unit.
First hydraulic pressure for turning and sliding the first processing head unit
To the cylinder and the second processing fixed on the rotating frame.
Head unit and its second machining head unit
Freely rotatable cylinder mounted in a direction perpendicular to
Roller-shaped second processing head, which extends to a first position.
The end of the opened steel pipe is located by rotating and advancing the spindle.
The second processing head that presses and deforms to a fixed flange angle
And the main shaft and the drive unit are stored, and the main shaft is rotated and pressed.
Slide base to hold as possible and its slide base
Slidably holds the slider between both sides of the drive and the bottom of the drive
Guide lot and its slide base in the main axis direction.
The second hydraulic cylinder to be moved and the hydraulic pressure
And a hydraulic pressure generating and distributing device that supplies and controls
The holding device can be replaced according to the outer diameter of the steel pipe to be machined.
There is a clamp that clamps the outer surface of the steel pipe from both sides.
Lock and its lock so that the steel pipe is held in place.
Third oil that supports and fixes the clamp chuck
With a pressure cylinder, and a common mount fixes the guide lot
Then, one end of the second hydraulic cylinder is fixed, and the hydraulic pressure is generated and distributed.
Equipment and a steel pipe holding device, a second hydraulic cylinder
And the fixed frame of the steel pipe holding device with a rod
You fixed.

Further, a lining cutting attachment for peeling and removing the lining provided on the steel pipe may be provided, and a surface finishing attachment for grinding and finishing the pipe end of the steel pipe pressed and deformed by flaring. May be provided, and a grooved attachment for processing a grooved portion for welding may be provided at the tip of the steel pipe.

Further, a burring attachment for forming a drawn branch pipe on the side of the steel pipe is provided, and the burring attachment is attached to a first machining head unit fixed on a slide unit by replacing the first machining head with the first machining head. A third machining head, a clamping chuck for burring, a pilot hole cutter, a bending tool, and a beveling tool. The third machining head is provided with a spindle and a first machining head unit. The pilot hole cutter, which is detachably fixed in the parallel direction and is attached to the tip of the third processing head, cuts the side wall of the steel pipe held so as to face the third processing head by rotation and advancement of the main shaft. To form a pilot hole in the side wall, and to form a pilot hole diagonally in the middle of the third processing head. The bending tool is slidably engaged with the hole, and can be fixed at the position where the tip end for bending the tube wall protrudes from the hole and the position housed in the hole, the bending tool is housed in the hole. After being advanced into the pilot hole in the state, the tip of the bending tool is protruded from the hole until the desired inner diameter of the drawn branch pipe is reached, and the wall of the steel pipe contacting the bending tool is bent outward by rotating and retracting the main shaft. Forming a drawn branch pipe portion, the bevel processing tool attached to the base of the third processing head having an inclined cutting blade at the tip portion, while contacting the cutting blade with the tip of the drawn branch pipe portion. By rotating and advancing the main shaft, the tip of the drawn branch pipe portion is shaped to form a groove, and the clamp chuck for burring can be replaced according to the outer diameter of the steel pipe to be processed. The drawing branch pipe forming portion in a direction perpendicular to the steel pipe and the main shaft held in front of the third machining head is supported fixed in the third hydraulic cylinder.

Further, a rolled screw processing attachment for rolling a screw outside the steel pipe may be provided.

According to a second aspect, there is provided a combined steel pipe machining apparatus for performing a burring process for forming a drawn branch pipe on a side surface of a steel pipe, wherein the combined steel pipe machining apparatus includes a steel pipe machining device and a steel pipe holding device; The steel pipe processing apparatus includes a main shaft that is rotated by a driving device, a rotary frame that is fixed to the main shaft and rotates together with the main shaft, a slide unit that can be slidably fixed on the rotary frame, and a processing head that is fixed on the slide unit. A unit, a processing head for burring provided with a pilot hole cutter, a bending tool, and a groove processing tool, which is fixed to the processing head unit so as to be detachable in a direction parallel to the main shaft, a main shaft, and a driving device. A slide base for holding the main shaft rotatably and pressably, and a slide between the both side surfaces of the slide base and the bottom surface of the driving device. The provided slidably held to guide rod, and an oil pressure cylinder Ru slide the slide base in the main axis direction, and a hydraulic pressure generating dispensing device which controls to supply the hydraulic pressure to the hydraulic cylinders. The steel pipe holding device is replaceable in accordance with the outer diameter of the steel pipe to be machined, and a burring clamp chuck that holds the steel pipe in a direction perpendicular to the main axis and a drawn branch pipe forming part in front of the burring machining head. When, steel pipe and a hydraulic cylinder to affix and support the lot clamping chuck burring to be held in place. A common mount fixes the guide lot and slides the slide base in the spindle direction
One end of the hydraulic cylinder is fixed to make, equipped with a hydraulic generating distributor and steel pipe holding device, the slide base spindle side
The fixing portion of the hydraulic cylinder that slides in the direction and the fixing frame of the steel pipe holding device are connected and fixed by a rod.

In the method for processing a steel pipe according to the first aspect of the present invention, in the flare processing according to the first aspect, a steel pipe holding apparatus is provided such that a center line of the steel pipe to be processed coincides with a center line of a main shaft by using the above-described combined steel pipe processing equipment. The first processing head , which is fixed at a predetermined position of the steel pipe composite processing equipment with a clamp chuck of
The cutting edge surface at the tip of the blade is the same as the outer periphery of the first machining head.
Cutting of lining cutting cutter arranged so that it becomes
The blade surface is brought into contact with either the inside or the outside of the steel pipe.
The steel pipe by rotating and advancing the spindle.
The mounted lining is peeled and removed, and the slide unit is slid in a state where the axial direction of the first processing head is parallel to the main axis, and the side of the first processing head is brought into contact with the inner surface of the steel pipe, and the main axis is rotated. In addition, the first hydraulic cylinder causes the first machining head unit to pivot around the boundary between the clamp portion of the steel tube clamp chuck and the unclamped portion so that the unclamped tube end of the steel tube is moved to the boundary position. After being expanded to the first position in the middle of the flange as a bending point, the first processing head unit is returned to the initial position, the main shaft is advanced, and attached to the second processing head unit in a direction orthogonal to the main shaft. The second free-rotatable cylindrical roller-shaped processing head is brought into contact with the pipe end of the steel pipe expanded to the first position, and the rotation and advance of the main shaft are performed. The pipe end portion of the steel pipe is pressed and deformed to a predetermined flange out angle I, comprising the step of opening the clamping chuck of a steel tube holding apparatus takes out the steel tube flare finish.

In the burring process of the second embodiment ,
Using a combined steel pipe machining facility, a steel pipe to be machined is drawn in a direction perpendicular to the main axis, and a branch pipe forming part is held in front of a third machining head for burring. A cutter fixed to the predetermined position of the multi-tasking equipment and cutting the opposite side of the steel pipe was attached to the tip, slidably engaged with the hole provided in the oblique direction, and the tip for bending the pipe wall protruded. A bending tool, which can be fixed at a position and a position stored in the hole, is attached to the intermediate portion, and a third machining head having a bevel machining tool having an inclined cutting blade at a tip portion attached to the base portion slides. Attaching and fixing to the processing head unit attached to the unit, the cutter is brought into contact with a predetermined position on the side of the steel pipe, the spindle is rotated and advanced, and the steel pipe is advanced. A pilot hole is formed in the side wall by cutting the side wall into a circle, and after the bending tool is advanced into the pilot hole with the bending tool housed in the hole, the tip of the bending tool has a desired inner diameter of the drawn branch pipe. With the bending tool pressed against the peripheral pipe wall around the pilot hole by the rotation and retreat of the main shaft, the wall surface of the steel pipe that comes into contact is expanded to the outside to form a drawn branch pipe part, and beveling After shaping the tip of the drawn branch pipe portion to form a groove by rotating and advancing the main shaft while contacting the cutting blade of the tool with the tip of the drawn branch pipe portion, and after retracting the third machining head And a step of opening a burring clamp chuck of the steel pipe holding device to take out the burring processed steel pipe.

In the thread rolling according to the third aspect, the steel pipe to be machined is fixed at a predetermined position of the combined steel pipe machining equipment by a clamp chuck of the steel pipe holding device so that the center line coincides with the center line of the main shaft. the slide through holes of the mounting bracket provided on both sides of the two machining head unit that is fixed diametrically opposite on the rotating frame with respect to the center line of the spindle to the spindle direction parallel Nejiten Die mounting base 4
The support leg of the book is slidably inserted via a spring, and a die for rolling a screw on the outer surface of the steel pipe to be engaged is attached by the rotation and advancement of the main shaft and the repulsive force of the spring. Attach it to the base, set the dice in a position where the die can roll the screw on the outer wall surface of the steel pipe, rotate the main shaft and advance it, and let the thread rolling die bite into the outer wall surface of the steel pipe by the repulsive force of the spring, After the screw is rolled by the rotation of the main shaft and the repulsive force of the spring, and the die is retracted, the clamp chuck of the steel pipe holding device is opened to take out the rolled screwed steel pipe.

[0025]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic side view of a steel pipe composite machining facility according to a first embodiment of the present invention.
FIG. 3 is a schematic top view of the steel pipe composite machining facility according to the first embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along line AA of FIG. 1 according to the first embodiment of the present invention. FIG. 4 is a schematic front view of a rotating frame provided with a processing head of the steel pipe composite machining facility according to the first embodiment of the present invention, and FIG. 5 is a steel pipe composite machining facility according to the first embodiment of the present invention. FIG. 6 is a schematic partial top view showing the vicinity of the processed part, and FIG. 6 is a schematic side view of a steel pipe holding device of the combined steel pipe processing equipment according to the first embodiment of the present invention.

The combined steel pipe machining equipment according to the first embodiment of the present invention has two steel pipes which can be fastened by connecting a loose flange whose inner peripheral surface is slidable along the outer wall of the steel pipe. This is a facility for performing flaring by bending the end to the outside of the steel pipe to form a flange. A steel pipe processing apparatus 120 for performing flaring on the steel pipe and a steel pipe holding apparatus 190 for holding the processing steel pipe in a predetermined position. And the steel pipe processing device 12
0 and a common base 190 on which the steel pipe holding device 190 is integrally mounted. When used as a stationary type, the steel pipe processing apparatus 120 and the steel pipe holding apparatus 190 may be installed on a foundation without using the common mount 190.

The steel pipe processing apparatus 120 includes a main shaft 121 rotated by a driving device 171 and a rotating frame 123 fixed to the main shaft 121 and rotated together with the main shaft 121.
And a slide unit 122 capable of sliding and fixing on the rotating frame 123. The slide unit 122 is rotated by a slide unit slide screw 126 provided on the rotation frame 123.
It is positioned and fixed at an arbitrary position above. The first machining head unit 131 is pivotally slid on the slide unit 122 about a predetermined fixed point as a pivot center.
A book guide groove 124 is provided.

A first processing head unit 131 is provided on a slide unit 122, and is guided by two guide rollers 125 engaged with two guide grooves 124 provided in the slide unit 122, By the expansion and contraction of the first hydraulic cylinder 133, the sliding sliding can be performed on the slide unit 122 from the first position to the second position.

A first rotatable cylindrical roller-shaped processing head 132 is attached to the first processing head unit 131 at a first position of the first processing head unit 131 in a direction parallel to the main axis. . Center line is spindle 12
The first working head 132 is brought into contact with the inner surface of the end of the working steel pipe 110 clamped so as to coincide with the center line of the first working head 110, and the first working head is rotated by the first hydraulic cylinder 133 while rotating the main shaft 121. By rotating the unit 131, the pipe end of the steel pipe 110 for processing whose first processing head 132 contacts the inner surface is expanded to a first position in the middle of the flange. The first position is usually the spindle 121
Is set at about 50 degrees.

The first hydraulic cylinder 133 has one end supported on the slide unit 122 and the other end connected to the first hydraulic cylinder 133.
The first processing head unit 131 is pivotally supported by the processing head unit 131 to rotate.

On the rotating frame 123, a pair of second processing head units 131 face each other in a direction orthogonal to the first processing head unit 131.
Is fixed. A second rotatable cylindrical roller-shaped second processing head 142 extends in a direction perpendicular to the main shaft 121.
The tube end of the steel pipe 110 expanded to the first position by the rotation and advancement of the main shaft 121 is pressed and deformed to 90 degrees which is a predetermined flange angle. The second processing head unit 141 is not limited to one pair, and the purpose can be achieved even if it is one set.

In the case where the end of the steel pipe is flanged by the second processing head 142, a bending phenomenon in which the inner surface of the steel pipe adjacent to the flanged portion bulges inward may occur in a thin steel pipe such as a stainless steel pipe. When the end of the steel pipe is flanged by the second processing head 142, the first processing head 132 is returned to the initial position and the main shaft 121 is rotated and advanced for processing by the second processing head 142. The bending phenomenon is prevented by rotating the first processing head 132 in contact with the inner surface of the steel pipe close to the flanged portion.

The main shaft 121 and the driving device 171 are held by a slide base 170, and the main shaft 121 has two bearings 17.
The guide lot 1 is rotatably held on the slide base 170 by the slider 5, and the slider 178 provided on the left and right slide bases 170 and the slider 178 provided on the lower surface of the driving device 171 are provided on the common frame 190.
The main shaft 121 and the driving device 171 held by the slide base 170 can move in the axial direction of the main shaft by being slidably engaged with 77.

The main shaft 121 is slid in the axial direction by a second hydraulic cylinder 134 via a thrust bearing 179, and each hydraulic cylinder is controlled by being supplied with hydraulic pressure by a hydraulic pressure generating and distributing device 174.

[0035] The steel pipe holding device 180 is a steel pipe 110 for processing.
A clamp chuck 181 that can be exchanged according to the outer diameter of the steel pipe 110 and clamps the outer surface of the steel pipe 110 from both sides, and the lot supports and fixes the clamp chuck 181 so that the steel pipe 110 is held at a predetermined position. And a third hydraulic cylinder 185.

A guide lot 177 provided on the common gantry 190 is slidably engaged with a slider 178 provided on the slide base 170 and the driving device 171. The common base 190 includes the slide base 170, the main shaft 121 held by the slide base 170, and the driving device 17.
1 is slidably held in the main shaft direction, one end of the second hydraulic cylinder 134 is fixed, and a hydraulic pressure generating / distributing device 174 and a steel pipe holding device 180 are mounted. Second hydraulic cylinder 1
34 and the clamp chuck fixing column 191 of the steel pipe holding device 180 are connected by a fixed connecting rod 191.
The escape of the steel pipe 110 due to the force applied to is suppressed.

FIG. 7 is a schematic sectional view near the main shaft 121 for explaining a method of supplying hydraulic pressure to the first hydraulic cylinder 133. Since it is necessary to supply hydraulic pressure to the first hydraulic cylinder 133 via the rotating rotary frame 123 and the main shaft 121, the main shaft 121 is provided with a second hydraulic motor provided in the main shaft.
An oil supply hole 176b and a first oil supply pipe 176a provided at the center of the second oil supply hole 176b and fixed to the main shaft 121 are provided, and a rotary hydraulic oil supply having an independent airtight chamber at each inlet. The device 176 is slipped. This is an example, and other methods may be used.

Next, a combined steel pipe machining facility according to a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, a lining cutting cutter is attached as an attachment to the first embodiment. FIG.
FIG. 4 is a schematic partial top view showing the vicinity of a processing part of a steel pipe combined processing facility according to a second embodiment of the present invention.

The first pin whose rotation is suppressed by the lock pin 235
A lining cutting cutter 233 is attached to the tip of the processing head 232 such that the cutting blade surface is substantially aligned in the same direction with the outer periphery of the first processing head 232. The cutting blade surface is brought into contact with either the inside or the outside of the steel pipe 210 fixed by the clamp chuck 181 before flaring, and the main spindle 2
By rotating and advancing 21, lining 212 covered on steel pipe 210 is peeled and removed.

If the cutting blade surface of the lining cutting cutter 233 is set to be the same as the outer periphery of the first processing head 232, the cutting blade surface is set in accordance with the lining portion of the steel pipe end surface, and the main shaft is moved by a predetermined distance. After rotating and moving forward,
By removing the lock pin 235 to make the first processing head 232 freely rotatable, stopping the advance of the main shaft and rotating the first processing head unit 231 only as in the first embodiment as in the first embodiment, the lining is separated and removed. Subsequently, flare processing can be performed.

When the lining 212 on the outer surface of the steel pipe 110 is peeled off, the first processing head 232 is retracted, and the first processing head 232 is brought into contact with the steel pipe 210 by the movement of the slide unit 222 and the advance of the main shaft 221. When the first processing head unit 231 is rotated as in the first embodiment, flare processing can be performed following the removal of the lining.

Although the lining cutter 233 is attached to the tip of the first machining head 232, it may be attached to the first machining head unit 231 as an independent lining cutter.

Normally, after the lining is peeled off and flare processing is performed, an inner surface rust-proof coating collar with an O-ring is inserted into the peeled portion of the lining to rust-proof the flared surface and the inner surface of the tube.

The construction and operation of the combined steel pipe machining equipment other than the lining cutting cutter 233 are the same as those of the first embodiment, and the description thereof will be omitted.

Next, a combined steel pipe machining apparatus according to a third embodiment of the present invention will be described with reference to the drawings. In the third embodiment, a surface finishing tool is attached as an attachment to the first embodiment. FIG. 9 is a schematic partial top view showing the vicinity of a processing part of the steel pipe composite processing equipment according to the third embodiment of the present invention.

A surface finishing tool 335 is attached to the surface finishing tool unit 337 and disposed on the first processing head unit 331 adjacent to the first processing head 332. The surface finishing tool 335 includes the first processing head 33.
The surface finishing tool unit 337 has a flare surface polishing tool 336 in a direction perpendicular to the axis 2 and is held by a support hole in the main axis direction provided in the surface finishing tool unit 337 via a spring. The steel pipe 31 in which the blade surface of the flared surface grinding tool 336 of the surface finishing tool 335 is pressed and deformed to a predetermined flange forming angle of 90 degrees.
The pipe end of the steel pipe 310 that has been pressed and deformed is ground by the rotation and advancement of the main shaft 321 by bringing the pipe end into contact with the pipe end of No. 0.

When the blade surface of the flared surface polishing tool 336 of the surface finishing tool 335 and the surface of the roller of the second processing head 342 on the steel pipe 310 side are set in a predetermined relationship, the steel pipe by the second processing head 342 is set. The pipe end of the steel pipe 310 can be ground and finished simultaneously with the pressing deformation of the tip of the pipe 310.

The configuration and operation of the combined steel pipe machining equipment other than the surface finishing tool 335 and the surface finishing tool unit 337 are the same as those in the first embodiment, and therefore description thereof is omitted. The steel pipe composite machining equipment according to the first embodiment may be provided with the lining cutting cutter 233 according to the second embodiment and the surface finishing tool 335 according to the third embodiment.

Next, the operation of the steel pipe composite machining equipment of the first embodiment provided with the lining cutting cutter 233 of the second embodiment and the surface finishing tool 335 of the third embodiment will be described. This will be described with reference to FIG. FIG. 10 is a process chart showing the operation of the steel pipe combined machining equipment of the first embodiment provided with the lining cutting cutter 233 of the second embodiment and the surface finishing tool 335 of the third embodiment. , (A) to (f) show each step. FIG. 11 is a flowchart showing the operation of the steel pipe combined machining equipment of the first embodiment provided with the lining cutting cutter 233 of the second embodiment and the surface finishing tool 335 of the third embodiment.

When the process is started (S101), the clamp chuck 181 corresponding to the steel pipe 110 to be processed is set in the steel pipe holding device 180 (S102), and the center line of the steel pipe 110 to be processed coincides with the center line of the main shaft. Then, it is fixed to a predetermined position of the combined steel pipe machining facility with the clamp chuck 181 (S103). If the lining 212 is not removed (S104N), the process proceeds to Step 108, and if the lining is removed (S104Y). ),
A lining cutting cutter 233 is attached to the tip of the first processing head 132 whose rotation has been suppressed such that the cutting blade surface is aligned in the same direction as the outer periphery of the first processing head 132, and the cutting blade surface of the lining cutting cutter 233 is attached. Steel pipe 110
(S105, FIG. 10a), and the spindle 121
Is rotated and moved forward to peel off and remove the lining 212 covered on the inner surface of the steel pipe to release the rotation of the first processing head 132 (S106, S107).

Next, the slide unit 122 is slid in a state where the axial direction of the first processing head 132 is parallel to the main axis, and the side surface of the first processing head 132 is brought into contact with the inner surface of the steel pipe. The center of rotation of the first machining head unit 131 is made to coincide with the boundary position between the clamped portion and the non-clamped portion of the steel pipe 110 (S108, FIG. 10).
b) By rotating the main shaft 121 and rotating and sliding the first processing head unit 131 with the first hydraulic cylinder 133, the unclamped pipe end of the steel pipe 110 is set at a boundary position as a refraction point, and is located in the middle of flange setting. Expand to the first position which is about 50 degrees (S109, S110,
10c), the first processing head unit is returned to the initial position.

If the connection surface is not ground, step 1
13 (S111N), if the connection surface is to be ground (S111Y), a surface finishing tool 335 having a cutting blade surface in a direction perpendicular to the axis of the main shaft 121 and urged in the direction of the steel pipe 110 is set. (S112) The main shaft 121 is advanced and the second processing head 142 in the form of a cylindrical roller that can be freely rotated and attached to the second processing head unit 141 in a direction perpendicular to the main shaft 121, and the surface finishing tool 335.
The cutting edge 336 of the steel pipe 110 is brought into contact with the pipe end of the expanded steel pipe 110 (S113, FIG. 10d), and the rotation and advance of the main shaft 121 bring the pipe end of the steel pipe 110 into a predetermined flange angle 9
Press and deform to 0 degrees (S114, S115, FIG.
e) The main shaft 121 is stopped and retracted (S116), the clamp chuck 181 is opened (S117), the flared steel pipe 110 is taken out (S118), and the process ends (S119).

When the flared portions of the flared steel pipes 110 are butted against each other with the packing 114 interposed therebetween and the loose flange 115 is fixed with bolts and nuts, the two steel pipes 110 are connected linearly (FIG. 10F).

The lining cutter 233 and the flare surface grinding tool 336 may be attached from the beginning.

Next, a combined steel pipe machining facility according to a fourth embodiment of the present invention will be described with reference to the drawings. In the fourth embodiment, a groove processing tool having a groove welding cutter for welding is provided as an attachment to the first embodiment. FIG. 12 is a schematic partial top view showing the vicinity of a processing part of the steel pipe composite processing equipment according to the fourth embodiment of the present invention.

A groove processing tool 446 having a groove processing cutter 447 is attached to the surface finishing tool unit 437 of the third embodiment in place of the surface finishing tool, and the first processing head unit 431 performs first processing. Head 4
32. Groove processing tool 446
Has a groove processing cutter 447 having a predetermined groove angle, and is fixed to a support hole provided in the surface finishing tool unit 437 in the main axis direction. The steel pipe 4 fixed to the clamp chuck 481 so that the center line of the groove processing cutter 447 of the groove processing tool 446 coincides with the center line of the main shaft.
By making contact with the front end of the steel pipe 10 and rotating and advancing the main shaft 421, the groove end for welding is performed on the pipe end of the steel pipe 310.

Although the bevel processing tool 446 is mounted using the surface finishing tool unit 437 of the third embodiment, a dedicated bevel processing tool unit may be used.

The construction and operation of the combined steel pipe machining equipment other than the groove machining tool 446 are the same as those of the first embodiment, and therefore the description thereof is omitted.

Next, a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a schematic partial top view showing the vicinity of a processing part of a composite steel pipe machining facility according to a fifth embodiment of the present invention, and FIG. 14 is a schematic diagram of the processing of the composite steel pipe machining facility according to the fifth embodiment of the present invention. It is a typical partial side view which shows a part vicinity and a steel pipe holding device.

The combined steel pipe machining equipment according to the fifth embodiment of the present invention is a combined steel pipe machining equipment for performing a burring process for forming a drawn branch pipe on a side surface of a steel pipe. This is a steel pipe combined processing equipment dedicated to burring using an attachment for burring that can be installed along with the processing equipment. By using only the burring processing, the object is only the steel pipe held laterally in the main axis direction, so that the range of forward and backward movement of the main spindle can be narrowed, and the first processing head, the second processing head, and the first hydraulic pressure can be reduced. Since a cylinder is not required, and a rotary hydraulic oil supply device is not required, it is possible to reduce the size and weight of the combined steel pipe machining equipment. Spindle,
Since the basic structure and operation of the rotating frame and the slide unit are the same as those of the first embodiment, they will be described with reference to FIGS.

The steel pipe composite machining equipment according to the fifth embodiment comprises:
The steel pipe processing apparatus 120 includes a steel pipe processing apparatus 120 and a steel pipe holding apparatus 180. The steel pipe processing apparatus 120 includes a main shaft 121 that is rotated by a driving device 171; a rotating frame 523 that is fixed to the main shaft 121 and rotates together with the main shaft 121; A slide unit 522 capable of sliding and fixing on the frame 523.

A third processing head 544 is fixed to the burring processing head unit 545 fixed to the slide unit 522 so as to be detachable in a direction parallel to the main shaft, and a side surface faces the third processing head 544. A pilot hole cutter 541 for cutting the side surface of the steel pipe 510 held as described above is attached to the tip, slidably engages a hole provided in an oblique direction, and a tip for bending the pipe wall projects from the hole. A bending tool 542, which can be fixed between the position and the position stored in the hole, is attached to the middle part, and a beveling tool 543 having an inclined cutting blade at the tip is attached to the base.

The pilot hole cutter 541 includes the main shaft 1
By rotating and advancing the 21, the side wall of the steel pipe 510 is cut to form a pilot hole in the side wall, and the bending tool 542 is stored in the hole in the bending tool 5.
42 is advanced to the inside of the pilot hole, and then the tip of the bending tool 542 is projected from the hole until the end of the bending pipe has a desired inner diameter, and the wall of the steel pipe 510 is brought into contact with the bending tool 542 by the rotation and retreat of the main shaft 121. Is bent outward to form a drawn branch pipe portion, and the groove processing tool 543 rotates the main shaft 121 while bringing a cutting blade having a cutting angle of about 30 degrees with respect to the main axis direction into contact with the tip of the drawn branch pipe portion. To form a groove by shaping the tip of the drawn branch pipe portion.

The main shaft 121 and the driving device 171 are held by a slide base 170, and the main shaft 121 has two bearings 17.
The guide lot 1 is rotatably held on the slide base 170 by the slider 5, and the slider 178 provided on the left and right sides of the slide base 170 and the slider 178 provided on the lower surface of the driving device 171 are provided on the common base 190.
The main shaft 121 and the driving device 171 held by the slide base 170 can move in the axial direction of the main shaft by being slidably engaged with 77.

The main shaft 121 is axially slid by a second hydraulic cylinder 134 via a thrust bearing 179, and is provided with a hydraulic pressure generating and distributing device 174 for supplying and controlling the hydraulic pressure to each hydraulic cylinder.

The steel pipe holding device 580 is a steel pipe 5 to be machined.
10 can be replaced according to the outer diameter of the steel pipe 510.
And a burring clamp chuck 582 for holding a drawn branch pipe forming portion in front of the third processing head in a direction orthogonal to the main shaft 121, and a burring clamp for holding the steel pipe in a predetermined position so that the steel pipe is held at a predetermined position. A third hydraulic cylinder 585 for supporting and fixing the chuck 582.

A guide lot 177 provided on the common base 590 is slidably engaged with a slider 178 provided on the slide base 170 and the driving device 171. The common frame 590 includes a slide base 170, the main shaft 121 held by the slide base 170, and the driving device 17.
1 is slidably held in the main shaft direction, one end of the second hydraulic cylinder 134 is fixed, and a hydraulic pressure generating / distributing device 174 and a steel pipe holding device 180 are mounted. Second hydraulic cylinder 1
34 and the clamp chuck fixing column 191 of the steel pipe holding device 180 are connected by a fixed connecting rod 191.
The escape of the steel pipe 510 due to the force applied is suppressed.

Next, a sixth embodiment of the present invention will be described with reference to the drawings. FIG. 15 is a schematic partial top view showing the vicinity of a processing part of the steel pipe composite processing equipment according to the sixth embodiment of the present invention.

The combined steel pipe machining apparatus according to the sixth embodiment of the present invention is capable of mounting the burring attachment according to the fifth embodiment to the combined steel pipe machining apparatus according to the first embodiment. This is a steel pipe combined processing equipment that enables flare processing and burring processing. The basic structure and operation of the equipment are the same as those of the first embodiment, and the description of the structure and operation of the portion related to the flare processing is omitted.

In the sixth embodiment, the first processing head unit 631 of the first embodiment is provided with the first processing head 1.
32, a third processing head 644 can be attached. The structure of the third processing head 644 is the fourth processing head 644.
Therefore, the description is omitted.

Next, the burring operation of the combined steel pipe machining apparatus according to the sixth embodiment will be described with reference to the drawings. FIG. 16 is a process chart showing the operation of the combined steel pipe machining equipment according to the sixth embodiment, and (a) to (j) show each process. FIG. 17 is a flowchart showing the operation of the combined steel pipe machining facility according to the sixth embodiment. The operation of the burring of the combined steel pipe machining apparatus of the fifth embodiment is also performed in step S2.
Except for 03, it is the same.

When the process is started (S 201), the burring clamp chuck 682 corresponding to the steel pipe 610 to be machined and having a machining portion opening 683 is pulled out in the direction perpendicular to the main shaft 121 so that the branch pipe forming portion is used for burring. The steel pipe 610 is set in the steel pipe holding device 680 so as to be held in front of the third processing head 644, and the steel pipe 610 is fixed (S
202), a pilot hole cutter 641 for cutting the opposite side of the steel pipe is attached to the tip, slidably engages a hole provided in an oblique direction, and is housed in a position where the tip for bending the pipe wall projects and the hole. A third processing head 644 for burring processing, in which a bending tool 642 that can be fixed at a set position is attached to an intermediate portion, and a beveling tool 643 having a cutting blade inclined at the tip is attached to a base. Is attached to the first processing head unit 631 in a state where the bending tool 642 is housed in the hole (S203), and the pilot hole cutter 6 for cutting is mounted.
41 is brought into contact with a predetermined position on the side surface of the steel pipe 610 (S2
16 and 16a), the main shaft 121 is rotated and advanced, and the side wall of the steel pipe 610 is cut into a circle to form a pilot hole in the side wall (S205, 206, FIG. 16).
b) With the bending tool 642 housed in the hole (S207), the bending tool 642 is advanced into the pilot hole (S208, FIG. 16c), and the tip of the bending tool 642 has the desired inner diameter of the drawn branch pipe. 16 (S209, FIG. 16d).
By the rotation and retreat of 1, the bending pipe 642 presses the surrounding pipe wall of the pilot hole with the bending tool 642, and expands the wall surface of the steel pipe in contact with the outside to form a drawn branch pipe portion (S 21).
0, S211, FIGS. 16e, f), groove processing tool 643
Main shaft 1 until the cutting blade of
21 is advanced (S212, FIG. 16g), and the leading end of the drawn branch pipe portion is shaped by rotating and advancing the main shaft 121 to form a groove (S213, S214, FIG. 16h).

Next, the spindle 121 is stopped and retracted to retract the third machining head 644 (S215), and the burring clamp chuck 682 of the steel pipe holding device 680 is provided.
Is opened (S216), and the burring-processed steel pipe 61 is opened.
0 is taken out (S217), and the process ends (S21).
8).

FIG. 16 (j) shows a state in which a drawn branch pipe is formed, and FIG. 16 (k) shows a state in which a short pipe 615 is welded to the drawn branch pipe at a welding portion 616.

Next, a seventh embodiment of the present invention will be described with reference to the drawings. FIG. 18 is a schematic partial top view showing the vicinity of a processing portion of the combined steel pipe processing equipment according to the seventh embodiment of the present invention.

The combined steel pipe machining apparatus according to the seventh embodiment of the present invention is capable of attaching a thread rolling die and a thread rolling die mount as attachments to the combined steel pipe machining apparatus according to the first embodiment, This is a combined steel pipe processing facility that enables flare processing and rolling screw processing with a single facility. The basic structure and operation of the equipment are the same as those of the first embodiment, and the description of the structure and operation of the portion related to the flare processing is omitted.

In the seventh embodiment, the thread rolling dies 75 are added to the second processing head unit 741 of the first embodiment.
2 and a thread rolling die mounting base 751 can be mounted, and two second diametrically opposed fixed to the center line of the main shaft 121 on the rotating frame 723.
The processing head unit 741 has main shafts 121 on both side surfaces.
A mounting bracket 743 having a through hole for sliding in a direction parallel to that of the second processing head unit 741 is provided in the through hole for sliding of the mounting bracket 743 of the second processing head unit 741. The thread rolling die 752 is slidably inserted in the main shaft direction via a spring. The thread rolling die 752 is fixed to the thread rolling die mounting base 751, and is engaged by the rotation and advancement of the main shaft 121 and the repulsive force of the spring. A screw is rolled on the outer surface of the steel pipe 710 to be formed.

Next, a description will be given of a process of thread rolling of a combined steel pipe machining facility according to a seventh embodiment of the present invention.

The steel pipe 710 to be machined is fixed at a predetermined position of the combined steel pipe machining equipment with the clamp chuck 781 of the steel pipe holding device 180 so that the center line coincides with the center line of the spindle. The sliding through holes provided in the mounting brackets 743 on both side surfaces of the two second processing head units 741 diametrically opposed to the center line and fixed in a direction parallel to the main shaft 121,
The four support legs of the thread rolling die mounting base 751 are slidably inserted via springs, and the steel pipe 71 engaged by the rotation and advancement of the main shaft 121 and the repulsive force of the springs.
A thread rolling die 752 for rolling a screw on the outer surface of the thread rolling die 0 is fixed to a thread rolling die mounting base 751. The thread rolling die 752 is set at a position where the thread rolling die 752 can roll a screw on the outer wall surface of the steel pipe 710, and when the main shaft 121 is rotated and advanced, the steel pipe 71 is elastically pressed by the spring.
At 0, the thread rolling die 752 bites and thread rolling is started. When the pressing of the second hydraulic cylinder 134 is stopped and the rotation of the main shaft is continued, the thread formed into a predetermined size is rolled, and the thread is rolled on the outer wall surface of the steel pipe 710. By reversely rotating the main shaft after the predetermined thread rolling, the thread rolling die 752 is retracted and detached from the thread-rolled steel pipe 710. The clamp chuck 781 of the steel pipe holding device is opened, and the steel pipe 710 which has been subjected to the rolling screw processing is taken out to complete the processing.

Next, an eighth embodiment of the present invention will be described with reference to the drawings. The steel pipe composite machining equipment according to the eighth embodiment is for performing flare processing according to the first embodiment, burring processing according to the sixth embodiment, and rolled screw processing according to the seventh embodiment on a steel pipe. This is a combined steel pipe processing facility, with reference to FIGS. 1 to 6 for the entire facility and flare processing, FIG. 15 for burring processing, and FIG. 18 for rolled screw processing.

The steel pipe complex processing equipment comprises a steel pipe processing device 120.
And a steel pipe holding device 180.
Is a rotary frame 123 that can rotate and move forward and backward with the main shaft 121, a slide unit 122 and a second processing head unit 141 provided on the rotary frame 123, and a first processing head unit attached to the slide unit 122. 131 and a first hydraulic cylinder 133.

The first processing head 131 for flaring is detachably attached to the first processing head unit 141, and the second processing head 142 is attached to the second processing head unit 141.

A pilot hole cutter 541 for cutting a side face of a steel pipe to form a pilot hole, and a bending tool 5 for bending a pipe wall around the pilot hole toward the outside of the steel pipe 510 to form a drawn branch pipe portion.
42 and a third processing head 544 to which a groove processing tool 543 having a cutting blade inclined at the distal end and forming a groove at the distal end of the drawn branch pipe portion are attached. Instead, it is detachably attached to the first processing head unit 131.

The four support legs of the thread rolling die mounting base 751 are slidably inserted in the main shaft direction via springs into the slide through holes of the mounting bracket 743 provided on the second processing head unit 141. Then, the thread rolling die 752 is fixed to the thread rolling die mounting base 751, and the thread is rolled on the outer surface of the steel pipe 710 to be engaged by the rotation, advancement of the main shaft 121, and the repulsive force of the spring.

Further, it is preferable to mount the lining cutter 233 described in the second embodiment or the surface finishing tool 335 described in the third embodiment. Further, the groove processing tool 446 described in the fourth embodiment.
Is attached to the surface finishing tool unit 437 in place of the surface finishing tool 335, thereby making it possible to perform the welding groove processing of the tip of the steel pipe.

The entire equipment and flaring are the first embodiment, the lining cutting is the second embodiment, the surface finishing is the third embodiment, and the welding groove processing is the first embodiment. In the fourth embodiment, the structure and operation of the burring process are described in detail in the sixth embodiment, and the rolling screw process is described in detail in the seventh embodiment.

Although the linear actuator has been described as a hydraulic cylinder, an electric linear actuator may be used.

[0088]

As described above, the combined steel pipe machining apparatus of the present invention has the following effects. That is, the first effect is
Flare processing, lining cutting and peeling processing, flare surface grinding, burring processing, welding steel pipe groove processing and rolling screw processing on steel pipes can be performed with one steel pipe combined processing equipment,
It is possible to provide a steel tube combined machining facility in which a combination of machining is selected depending on the application, because each machining tool can be attached to a common rotating frame as an attachment.

A second effect is that the steel pipe combined machining equipment can be moved to a piping site because of its reduced size and weight. This is because, unlike the conventional flaring machine, the primary processing tool and the secondary processing tool for flaring are mounted on a common spindle rotating frame, so that there is no need to rotate individually and movement in the direction perpendicular to the axis is possible. In addition, the equipment was reduced in size, and the main shaft was integrated with a reducer and drive unit, which is a rotary drive unit, and a rotary hydraulic lubricating device, which has a sliding function for the front and rear of the main shaft. A mechanism for sliding back and forth is provided, and a fixed connecting rod is disposed between the mounting and fixing position of the second hydraulic cylinder and the clamp chuck fixing column for holding the steel pipe, and is firmly fixed. The clamp chuck, which receives the pressure of the second cylinder, does not receive the one-way pressure and cancels the pressure with the fixed connecting rod. Can maintain the perpendicularity to the main shaft, and the common base, which used to be strong and required weight to establish machining accuracy, can now be used as a protective case. For example, about 5
This is because it was possible to reduce the weight to less than 1 ton while having multi-functions compared to the conventional flare processing machine which had a ton.

A third effect is that the lining steel pipe can be subjected to lining cutting and peeling without being brought into a processing plant. This is done by attaching a lining cutting and peeling attachment to the flaring attachment, cutting and peeling the lining of the fixed-length mass-produced lining steel pipe at the site and flaring it to the dimensions of the site. This is because the lining steel pipe can be processed and piped on site by filling and setting the rust-preventive coating collar with the ring.

The fourth effect is that burring can be easily performed without using a dedicated machine. This is because burring can be easily performed simply by replacing the flaring attachment with the burring attachment.

The fifth effect is that the size can be reduced and the working efficiency can be improved even when the burring processing machine is used. This is a pilot hole cutter that cuts the side of the steel pipe to form a pilot hole, a bending tool that bends the pipe wall around the pilot hole toward the outside of the steel pipe to form a drawn branch pipe part, and a tip that is inclined. A groove processing tool that has a cutting blade and forms a groove at the tip of the drawn branch pipe portion is attached to a common processing head, and only by rotating the spindle and moving forward and backward without changing the processing tool, This is because burring processing has been enabled.

A sixth effect is that the groove for welding of the end face of the steel pipe can be easily formed without manual work using a large lathe or a grinder. This is because the groove of the end face of the steel pipe can be machined by replacing the attachment.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a steel pipe composite machining facility according to a first embodiment of the present invention.

FIG. 2 is a schematic top view of the steel pipe composite machining facility according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 according to the first embodiment of the present invention.

FIG. 4 is a schematic front view of a rotating frame provided with a processing head of the steel pipe composite processing equipment according to the first embodiment of the present invention.

FIG. 5 is a schematic partial top view showing the vicinity of a processing portion of the steel pipe composite processing equipment according to the first embodiment of the present invention.

FIG. 6 is a schematic side view of a steel pipe holding device of the steel pipe combined machining facility according to the first embodiment of the present invention.

FIG. 7 is a schematic cross-sectional view of the vicinity of a main spindle for explaining a method of supplying hydraulic pressure to a first hydraulic cylinder.

FIG. 8 is a schematic partial top view showing the vicinity of a processing part of a steel pipe combined processing facility according to a second embodiment of the present invention.

FIG. 9 is a schematic partial top view showing the vicinity of a processing part of a steel pipe composite processing facility according to a third embodiment of the present invention.

FIG. 10 is a process diagram showing an operation of the steel pipe multi-tasking processing equipment of the first embodiment provided with the lining cutting cutter of the second embodiment and the surface finishing tool of the third embodiment. . (A)-(f) show each process.

FIG. 11 is a flowchart showing the operation of the steel pipe multi-tasking processing equipment of the first embodiment provided with the lining cutting cutter of the second embodiment and the surface finishing tool of the third embodiment.

FIG. 12 is a schematic partial top view showing the vicinity of a processing portion of a steel pipe combined processing facility according to a fourth embodiment of the present invention.

FIG. 13 is a schematic partial top view showing the vicinity of a processing portion of a combined steel pipe processing facility according to a fifth embodiment of the present invention.

FIG. 14 is a schematic partial side view showing a vicinity of a processing portion and a steel pipe holding device of a combined steel pipe processing equipment according to a fifth embodiment of the present invention.

FIG. 15 is a schematic partial top view showing the vicinity of a working portion of a combined steel pipe machining facility according to a sixth embodiment of the present invention.

FIG. 16 is a process chart showing the operation of the combined steel pipe machining apparatus according to the sixth embodiment. (A) to (j) show each step.

FIG. 17 is a flowchart showing an operation of the steel pipe multi-task processing equipment according to the sixth embodiment.

FIG. 18 is a schematic partial top view showing the vicinity of a processing portion of a combined steel pipe processing facility according to a seventh embodiment of the present invention.

FIG. 19 is a schematic partial plan view showing the vicinity of a processing portion of a conventional steel pipe flange processing apparatus.

FIG. 20 is a schematic drawing showing the vicinity of a processed portion of a steel pipe flange processing apparatus disclosed in Japanese Patent Application Laid-Open No. 10-146623. (A) is a partial plan view. (B) is a partial front view.

[Explanation of symbols]

110, 210, 310, 410, 510, 610, 7
10, 810, 910 steel pipe 114 packing 115 loose flange 120 steel pipe processing equipment 121, 221, 321 spindle 122, 222, 322, 422, 522, 622, 7
22 slide units 123, 223, 323, 423, 523, 623, 7
23 rotating frame 124 guide groove 125 guide rollers 126, 226, 326 slide unit sliding screws 131, 231, 331, 431, 631 first processing head units 132, 232, 332, 432, 632 first processing head 133, 233, 333, 433, 633 First hydraulic cylinder 134 Second hydraulic cylinder 141, 241, 341, 441, 641, 741
Second processing head units 142, 242, 342, 442, 642, 742
Second processing head 143, 743 Die mounting base mounting bracket 170 Slide base 171 Drive unit 174 Hydraulic generation and distribution unit 175 Bearing 176 Rotary hydraulic oil supply unit 176a First oil supply pipe 176b Second oil supply hole 177 Guide lot 178 Slider 179 Thrust bearing 180, 580 Steel pipe holding device 181, 281, 381, 481, 781 Clamp chuck 183 Clamp chuck fixing column 185, 285, 385, 485, 585, 785
Third hydraulic cylinder 190, 590 Common base 191 Fixed connecting rod 212 Lining 233 Lining cutting cutter 235 Lock pin 335 Surface finishing tool 336 Flare surface polishing tool 337 Surface finishing tool unit 541, 641 Pilot hole cutter 542, 642 Bending tool 543 , 643 Groove processing tools 544, 644 Third processing head 545 Burring processing head units 582, 682 Burr processing clamp chucks 583, 683 Processing section opening 615 Short pipe 616 Welding section 751 Thread rolling die mounting base 752 Thread rolling Dies 821, 921 Slide units 831, 931 One-stage roller head 832, 932 One-stage processing head 841, 941 Two-stage roller head 842, 942 Two-stage processing head 881, 981 Clamp mechanism 951 Scraper 952 Scraper holder 954 Sleeve 555 Spring

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21D 19/04 B21D 19/08 B21D 15/00 B21H 3/00

Claims (12)

(57) [Claims] 1. An inner peripheral surface along an outer wall of each steel pipe.
The connection of two steel pipes by the connection of a slidable loose flange
Connect the end of the steel pipe to the outside of the steel pipe so that the end can be fastened.
Steel pipe for flare processing to bend and bend
And a steel pipe holding device.
The end of the steel pipe is extended to a first position in the middle of the flange.
A first processing head to be opened, and expanded to a first position
Pressing and deforming the end of the steel pipe to the position of the predetermined flange
2 a processing head, wherein the steel pipe holding device is
Interchangeable clamp chuck that clamps the outer surface of the
In the combined steel pipe machining equipment, the steel pipe machining apparatus comprises: a main shaft that is rotated by a driving device; a rotating frame that is fixed to the main shaft and rotates together with the main shaft; A slide unit provided with two guide grooves for turning and sliding, and being slidably fixed on the rotating frame in a radial direction; and two slide units provided on the slide unit and provided on the slide unit. A first processing head guided by two guide rollers engaging with the guide groove, and capable of turning and sliding on the slide unit from a first position to a second position by expansion and contraction of a first hydraulic cylinder. A unit attached to the first processing head unit at the first position of the first processing head unit so as to be in a direction parallel to the main axis. First that of the free rotatable cylindrical roller-shaped
A processing end of the steel pipe in which the first processing head comes into contact with the inner surface by rotation of the main shaft and turning and sliding operation of the first processing head unit. A first processing head that expands to one position, one end of which is pivotally supported on the slide unit, and the other end of a rod is pivotally supported by the first processing head unit to pivot the first processing head unit A first hydraulic cylinder to be slid, a second processing head unit fixed on the rotating frame, and a freely rotatable cylindrical roller attached to the second processing head unit in a direction perpendicular to the main axis. Second
A second processing head that presses and deforms the pipe end of the steel pipe expanded to the first position to a predetermined flange angle by rotation and advancement of the main shaft; and A slide base for storing the driving device and rotatably holding the main shaft, and a guide lot for slidably holding sliders on both sides of the slide base and the bottom surface of the driving device; and a slide base. A second hydraulic cylinder that slides in the main axis direction, and a hydraulic pressure generating and distributing device that supplies and controls a hydraulic pressure to each hydraulic cylinder, wherein the steel pipe holding device is adapted to an outer diameter of the steel pipe to be processed. Exchangeable,
A clamp chuck that clamps the outer surface of the steel pipe from both sides, and a third hydraulic cylinder whose lot supports and fixes the clamp chuck so that the steel pipe is held at a predetermined position. Fixing the guide lot, fixing one end of the second hydraulic cylinder, mounting the hydraulic pressure generating and distributing device and the steel pipe holding device, and fixing the second hydraulic cylinder fixing portion and the steel pipe holding device. steel tubes combined machining equipment of the fixing frame fixes linked by a rod, characterized in that. 2. The main shaft has a reciprocating hydraulic pipe inside, one end of the hydraulic pipe is connected to the first hydraulic cylinder, and the other end of the hydraulic pipe is connected via a rotary hydraulic oil supply device. The steel pipe combined machining equipment according to claim 1 , wherein the steel pipe combined processing equipment is connected to an oil supply pipe and a return pipe of the hydraulic pressure generation and distribution device. 3. A lining cutting attachment for peeling and removing a lining provided on the steel pipe, wherein the lining cutting attachment has a cutting edge on a tip of the first processing head whose rotation is suppressed. Is the first
A lining cutting cutter disposed so as to be the same as the outer periphery of the processing head, wherein the cutting blade surface of the lining cutting cutter is brought into contact with either the inside or the outside of the steel pipe before flaring, and The steel pipe composite machining facility according to claim 1 or 2 , wherein the lining mounted on the steel pipe is peeled and removed by rotating and moving the steel pipe. 4. A surface finishing attachment for grinding and finishing the pipe end of the steel pipe pressed and deformed by flare processing, wherein the surface finishing attachment is provided to the first processing head unit and to the first processing head. disposed adjacently, having said first perpendicular direction to the machining head axis and switching Kezuha set to substantially the same position as the contact surface with the steel pipe of the second machining head, said first A surface finishing tool held via a spring in a support hole provided in the first processing head unit, wherein the cutting edge surface of the surface finishing tool is pressed and deformed by the second processing head. The steel pipe composite machining equipment according to any one of claims 1 to 3 , wherein the pressed and deformed pipe end of the steel pipe is ground and finished by bringing the steel pipe into contact with an end and rotating and advancing the main spindle. . 5. A groove processing attachment for processing a groove for welding at a tip of a steel pipe, wherein the groove processing attachment is attached to the first processing head unit and to the first processing head. A bevel processing tool having an inclined cutting blade at the tip end, which is disposed adjacent to and is fixed to a support hole provided in the first processing head unit, and the cutting blade surface is fixed to a clamp chuck. 2. The groove is formed by grinding and shaping the tip of the steel pipe by rotating and advancing the main shaft while making contact with the tip of the steel pipe.
The steel pipe composite machining facility according to any one of claims 1 to 4 . 6. A burring attachment for forming a drawn branch pipe on a side surface of the steel pipe, wherein the burring attachment is attached to the first processing head unit fixed on the slide unit. A third processing head, which is mounted in place of a third processing head, and a burring clamp chuck, wherein the third processing head provided with a pilot hole cutter, a bending tool, and a groove processing tool is provided with the first processing head.
The pilot hole cutter fixed to the processing head unit so as to be attachable and detachable in a direction parallel to the main shaft, and the pilot hole cutter attached to the tip of the third processing head is rotated by the rotation of the main shaft and advancing the third processing head. A pilot hole is formed in the side wall by cutting the side wall of the steel pipe held so as to face each other, and slidably engages with a hole provided obliquely at an intermediate portion of the third processing head. The bending tool, which can be fixed at a position where the tip for bending protrudes from the hole and at a position stored in the hole, after the bending tool is advanced into the pilot hole with the bending tool stored in the hole. The tip of the bending tool is protruded from the hole until the desired inner diameter of the drawn branch pipe is reached, and the steel pipe is brought into contact with the bending tool by rotating and retracting the main shaft. Forming a drawing branch pipe portion by bending a surface to the outside, wherein the bevel processing tool attached to a base of the third processing head has an inclined cutting blade at a tip end, and the cutting blade is connected to the drawing branch. By rotating and advancing the main shaft while making contact with the tip of the pipe portion, the tip of the drawn branch pipe portion is shaped to form a groove, and the burring clamp chuck is adapted to the outer diameter of the steel pipe to be processed. 2. The steel pipe may be exchangeable, and a drawn branch pipe forming portion of the steel pipe is held in front of the third processing head in a direction orthogonal to the main axis, and is supported and fixed by the third hydraulic cylinder. 3. The steel pipe combined machining equipment according to any one of claims 1 to 5 . 7. A rolling screw processing attachment for rolling a screw outside the steel pipe, wherein the rolling screw processing attachment is provided on the second processing head disposed on the rotating frame. A thread rolling die mounting base which is slidably inserted in the main shaft direction via a spring into a mounting hole, and which is mounted on the screw rolling die mounting base to rotate and advance the main shaft and a repulsive force of the spring. and by, and a die for thread rolling for rolling a thread on the outer surface of the steel pipe to be engaged, steel tubes combined machining equipment according to any one of claims 1 to 6. 8. A combined steel pipe machining facility for performing a burring process for forming a drawn branch pipe on a side surface of a steel pipe, wherein the combined steel pipe machining facility includes a steel pipe machining device and a steel pipe holding device. A spindle that is rotated by a driving device, a rotating frame that is fixed to the spindle and rotates with the spindle, a slide unit that can slide and fix on the rotating frame, and a processing head unit that is fixed on the slide unit. A burring processing head provided with a pilot hole cutter, a bending tool, and a bevel processing tool fixed to the processing head unit so as to be detachable in a direction parallel to the main shaft, and a tip of the burring processing head; The pilot hole cutter attached to the burring processing is performed by rotating and advancing the spindle. The side wall of the steel pipe held opposite to the machining head is cut to form a pilot hole in the side wall, and slidably engages a hole provided at an intermediate portion of the burring machining head in an oblique direction. The bending tool, which can be fixed at a position where the tip for pipe wall bending protrudes from the hole and at a position housed in the hole, is provided inside the pilot hole with the bending tool housed in the hole. After being advanced, the tip of the bending tool is made to protrude from the hole until it has a desired inner diameter of the drawn-out branch pipe, and the wall surface of the steel pipe that comes into contact with the bending tool is bent outward by the rotation and retreat of the main shaft to draw out the drawn-out branch pipe. Forming a portion, the beveling tool attached to the base of the burring processing head having an inclined cutting blade at a tip end, and the cutting blade being attached to the tip of the drawn branch pipe portion. A burring processing head for shaping the tip of the drawn branch pipe portion to form a groove by rotating and advancing the main shaft while contacting the main shaft, and storing the main shaft and the drive device to store the main shaft. a slide base for rotating-pressing can hold a guide rod that slidably holds the slider and the bottom surface of the drive unit and both sides of the slide base, the oil pressure Ru slide the slide base in the main axis direction A cylinder, and a hydraulic pressure generating and distributing device that supplies and controls a hydraulic pressure to each hydraulic cylinder, wherein the steel pipe holding device is replaceable according to an outer diameter of the steel pipe to be processed,
A burring clamp chuck for holding the steel pipe in a direction perpendicular to the main axis at a branch pipe forming portion in front of the burring processing head, and a lot for the steel pipe so that the steel pipe is held at a predetermined position. comprising a hydraulic cylinder to affix <br/> supports the burring clamp chuck, a common cradle, fixed to the guide rod, the slide
One end of a hydraulic cylinder that slides the base in the main shaft direction is fixed, and the oil pressure distributing device and the steel pipe holding device are mounted, and the oil slides the slide base in the main shaft direction.
A steel pipe composite machining facility, wherein a fixing portion of a pressure cylinder and a fixing frame of the steel pipe holding device are connected and fixed by a rod. 9. Use of the steel pipe composite machining facility according to claim 1.
And the end of the steel pipe is perpendicular to the center line of the steel pipe.
Flared to bend out to the outside
A steel pipe machining method, wherein a center line of a steel pipe to be machined coincides with a center line of a main shaft.
Using the steel pipe holding device clamp clamp,
A cutting blade of a lining cutting cutter fixed to a predetermined position of the equipment and arranged at the tip of the first processing head , the rotation of which is suppressed, such that the cutting blade surface is the same as the outer periphery of the first processing head. the surface is contacted with either the inside and outside of the steel pipe, the main shaft has been lined peeling removal covered state in the steel tube by rotating, advancing, the axial direction of the first machining head and the main shaft Slur in parallel
Slide the guide unit to the side of the first machining head.
Surface with the inner surface of the steel pipe, rotate the main shaft and move forward with the first hydraulic cylinder.
The first working head unit is attached to the steel pipe by the clamp.
Boundary between chuck clamp and unclamped area
By swiveling and sliding around the position as the center of rotation,
Bending point at unclamped pipe end of steel pipe
After expanding to the first position in the middle of the flange,
The first processing head unit is returned to the initial position, and the main spindle is moved forward to move the first processing head unit to the second processing head unit.
Freely rotatable mounted in a direction perpendicular to the spindle
Move the cylindrical roller-shaped second processing head to the first position
The expanded pipe is brought into contact with the end of the steel pipe and the spindle is turned.
The pipe end of the steel pipe is rolled and advanced to a predetermined flange angle.
Press-deformation to a degree , open the clamp chuck of the steel pipe holding device, and
Retrieve the A processed of the steel pipe, further comprising the step
Characteristic steel pipe processing method. 10. The steel pipe having a cutting blade surface in a direction perpendicular to the axis of the main shaft at the same time as the step of pressing and deforming the pipe end to a predetermined flange angle, and being urged in the direction of the steel pipe. The cutting edge surface of the surface finishing tool according to item 4 is brought into contact with the expanded pipe end of the steel pipe, and the rotation and advancement of the main shaft causes the pipe end of the steel pipe to reach a predetermined flange angle. The method for processing a steel pipe according to claim 9 , wherein the pipe end is ground and finished while being deformed by pressing. 11. A method for processing a tubing for forming a drawn branch pipe on a side surface of a steel pipe by using the composite processing equipment for a steel pipe according to claim 6 or 8 , wherein the steel pipe to be processed is a spindle. A pilot for fixing a steel pipe at a predetermined position of the steel pipe combined processing equipment with a burring processing clamp chuck that holds a drawn branch pipe forming portion in front of a burring processing head in a direction perpendicular to the pipe, and cuts the opposite side of the steel pipe. A bending tool in which a hole cutter is attached to the tip and is slidably engaged with a hole provided in an oblique direction and can be fixed at a position where a tip for bending a tube wall projects and a position stored in the hole. A burring machining head with a cutting tool attached to the middle and a beveling tool with an inclined cutting blade at the tip attached to the base is attached to the slide unit. The pilot hole cutter is brought into contact with a predetermined position on the side surface of the steel pipe, the main shaft is rotated, and the side wall of the steel pipe is cut into a circular shape by advancing the main shaft. Forming a pilot hole, after the bending tool is advanced into the pilot hole with the bending tool housed in the hole, the bending tool is projected from the hole until the tip of the bending tool has a desired inner diameter of the drawn branch pipe; The bending tool presses the peripheral pipe wall of the pilot hole by the rotation and retreat of the main shaft, and expands the wall surface of the steel pipe in contact with the outside to form a drawn branch pipe portion. By rotating and advancing the main shaft while bringing the cutting blade into contact with the tip of the drawn branch pipe portion, the tip of the drawn branch pipe portion is Shaping to form a groove, retracting the burring processing head, opening the burring clamping chuck of the steel pipe holding device, and taking out the burring processed steel pipe. And steel pipe processing method. 12. A steel pipe machining method for rolling a thread outside a steel pipe by using a combined steel pipe machining facility, wherein a center line of a steel pipe to be machined coincides with a center line of a main shaft. As described above, the steel pipe holding apparatus is fixed at a predetermined position of the steel pipe complex processing equipment by a clamp chuck, and both sides of two processing head units fixed on a rotating frame so as to be diametrically opposed to the center line of the main shaft. The four support legs of the thread rolling die mounting base are slidably inserted via springs into sliding through holes of a mounting bracket provided on the surface in a direction parallel to the main shaft, and the main shaft rotates and advances. And, by the repulsive force of the spring, a thread rolling die for rolling a screw on the outer surface of the steel pipe to be engaged is attached to the thread rolling die mount, and the thread rolling die is attached to an outer wall surface of the steel pipe. Rolled screw The thread rolling die is set at a position where it can be cut, and the spindle is rotated and moved forward to cause the thread rolling die to bite into the outer wall surface of the steel pipe by the repulsive force of the spring, and the rotation of the spindle and the rotation of the spring Rolling the screw by a repulsive force, reversing the die by reversing the main shaft, and then opening the clamp chuck of the steel pipe holding device to take out the rolled screw-processed steel pipe. Characteristic steel pipe processing method.