CN108247356B - Elbow cut-off groove rounding all-in-one - Google Patents
Elbow cut-off groove rounding all-in-one Download PDFInfo
- Publication number
- CN108247356B CN108247356B CN201711431243.0A CN201711431243A CN108247356B CN 108247356 B CN108247356 B CN 108247356B CN 201711431243 A CN201711431243 A CN 201711431243A CN 108247356 B CN108247356 B CN 108247356B
- Authority
- CN
- China
- Prior art keywords
- elbow
- adjusting
- inner top
- roller
- top roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention discloses an elbow cutting groove rounding integrated machine, which comprises a manual rotating wheel device fixed on the left side of a base, an elbow cutting device or an elbow rounding roller device connected with the manual rotating wheel device, and an annular heating device arranged on the right side of the elbow cutting device or the elbow rounding roller device, wherein an elbow clamping device is arranged on the right side of the annular heating device, and an elbow clamping device is arranged on the right side of the elbow clamping device; the base is provided with a movable base, and the annular heating device and the elbow clamping device are detachably connected to the movable base; the elbow clamping device is fixedly connected to the movable base. The invention can be provided with the elbow cutting device to cut the standard elbow, then the elbow cutting device is dismounted, and then the elbow rounding roller device is arranged to round the end opening of the elbow. The invention can quickly obtain the non-standard angle elbow with accurate angle and any angle of the end face groove; simple structure, convenient operation and suitability for popularization.
Description
Technical Field
The invention relates to a device for cutting an elbow and rounding a port, in particular to an elbow cutting groove rounding all-in-one machine capable of cutting off, beveling and rounding the elbow.
Background
In the design and manufacturing process of the marine pipe fitting, a large number of bent parts need to adopt non-standard angle elbows according to piping layout. At present, most elbow manufacturers in China adopt stock mold forging or casting for elbow processing, and products are standard elbows. The non-standard angle elbow requires special mold fabrication, thus the manufacturing cost is high and the order period is long.
The ship building is a system project, the requirement on production takt is very compact, and the whole ship building period is possibly influenced by the delay of a certain nonstandard angle elbow in an important system. Especially in the stage of segment folding and mooring embedded pipe manufacturing, the pipe fitting manufacturing period is more tense, and ship delivery is affected. The manufacturing cycle requirements for non-standard elbows are very urgent.
In the past, most shipyards adopt a manual marking and cutting method to obtain the non-standard elbow by utilizing the standard elbow in an intercepting manner when the non-standard elbow is urgently needed, the middle part of the elbow is seriously elliptical due to the production process problem of the standard elbow, and a standard groove cannot be processed manually, so that the assembly and welding quality of the non-standard angle elbow obtained by the method are seriously restricted, and the requirements of flaw detection are difficult to meet particularly in the manufacturing of I-grade pipes.
Because the elbow is basically manufactured by hot forging of a shaping die, the outer side of the middle of the elbow is provided with a section of free deformation section due to the limitation of the process, and the section of ovality is larger. And the cut elbow will generate certain deformation due to the release of the internal stress, so the roundness can be influenced to a certain extent. Thereby affecting the quality of pipe fitting assembly, welding and the like in subsequent processes. Thus requiring a full circle of the elbow port.
Disclosure of Invention
The invention aims to provide an elbow cutting and groove rounding integrated machine, which can cut a standard elbow into a non-standard elbow with any angle by adjusting the angle of the elbow through an elbow clamping device, cut and bevel the elbow through an elbow cutting device, and round the oval end part of the cut elbow through an elbow rounding roller device.
In order to achieve the purpose, the invention provides an elbow cutting groove rounding integrated machine which comprises a manual rotating wheel device fixed on the left side of a base, an elbow cutting device or an elbow rounding roller device connected with the manual rotating wheel device, and an annular heating device arranged on the right side of the elbow cutting device or the elbow rounding roller device, wherein an elbow clamping device is arranged on the right side of the annular heating device, and an elbow clamping device is arranged on the right side of the elbow clamping device.
The base is provided with a movable base, and the annular heating device and the elbow clamping device are detachably connected to the movable base.
The elbow clamping device is fixedly connected to the movable base.
The elbow cutting device comprises a long-strip-shaped radial adjusting device, a square hole used for being connected with the manual rotating wheel device is formed in the middle of the radial adjusting device, wing plates provided with first long grooves are arranged on two sides of the radial adjusting device, and the two length adjusting devices are movably arranged on the first long grooves of the wing plates on the two sides of the radial adjusting device respectively through first compression screws.
The two length adjusting devices are of telescopic sleeve structures, second long grooves are formed in the tail ends of the two length adjusting devices, and two cutting torches with opposite working ends are arranged on the two second long grooves respectively; the gas inlet end of the cutting torch is connected with a gas source pipe.
The cutting torch is connected to the second long groove of the length adjusting device in an angle-adjustable mode through a second compression screw.
In the above elbow cutting groove rounding all-in-one machine, in an optimal mode, the rounding roller device comprises an inner top roller adjusting mechanism and an outer pressure roller adjusting mechanism.
The inner top roller adjusting mechanism comprises a strip-shaped inner top roller bracket, the middle of the inner top roller bracket is provided with a mounting hole sleeved at the end part of the rotating shaft, two first flanges which protrude outwards are arranged at two sides of the mounting hole along the length direction of the inner top roller bracket, two first through holes which are parallel to the inner top roller bracket are arranged on the two first flanges, inner top roller assemblies which are arranged along opposite directions are arranged in the two first through holes in a penetrating manner, each inner top roller assembly comprises a first screw rod which penetrates through the first through hole and is externally provided with threads, and an inner top roller which is rotatably connected to one end, away from the mounting hole, of the first screw rod; and a middle adjusting nut is arranged between the two first flanges, and the other end of the first screw rod is screwed in the adjusting nut.
When the adjusting nut is turned, the two inner top roller assemblies simultaneously move towards the direction far away from the adjusting nut or the direction close to the adjusting nut;
the external pressing roller adjusting mechanism comprises two L-shaped external pressing roller seat plates, the long edges of the two external pressing roller seat plates are fixedly connected to the two sides of the internal top roller bracket, and the short edges of the two external pressing roller seat plates are opposite to the first flange; the middle parts of the short edges of the two external pressure roller seat plates are provided with second through holes with threads formed inside, and external pressure roller assemblies parallel to the long edges of the external pressure roller seat plates are arranged in the second through holes in a penetrating manner; the external pressure roller assembly comprises a second screw rod in the second through hole in a threaded connection mode, and an external pressure roller rotatably connected to the second screw rod, wherein the external pressure roller is close to one end of the inner top roller assembly, and the other end of the second screw rod is connected with an adjusting hand wheel.
When the adjusting hand wheel is rotated, the external pressure roller assembly moves towards the direction far away from the internal top roller assembly or the direction close to the internal top roller assembly.
And a full-circle space for accommodating the pipe wall of the elbow port is formed between the external pressure roller and the internal top roller.
In the above elbow cutting and groove rounding all-in-one machine, in an optimal mode, a sliding connection mechanism is arranged between the inner top roller bracket and the outer pressure roller seat plate, and the sliding connection mechanism comprises a sliding rail arranged along the length direction of the inner top roller bracket and a sliding groove arranged on the long edge of the outer pressure roller seat plate and used for accommodating the sliding rail; the position of the external pressure roller seat plate on the internal top roller bracket can be adjusted through the sliding connection mechanism.
According to the elbow cutting and groove rounding all-in-one machine, in an optimal mode, the inner top roller bracket and the long edge of the outer pressing roller seat plate are fixed through a plurality of groups of bolts.
In the above elbow cutting groove rounding all-in-one machine, in an optimal mode, a guide dovetail groove is formed in one side of the outer pressing roller seat plate, which is in contact with the inner pressing roller and the outer pressing roller, and the inner pressing roller and the outer pressing roller are provided with sliding blocks which slide in the guide dovetail groove.
In the above elbow cutting and beveling rounding all-in-one machine, in an optimal mode, the second screw is a T-shaped differential screw with two sections of different diameters and pitches and opposite rotation directions, and the thinner section of the second screw is screwed in a threaded hole arranged at the end part of the external pressure roller; the thicker section of the second screw rod is screwed in the second through hole, and the end part of the thicker section of the second screw rod is fixedly connected with an adjusting hand wheel.
According to the elbow cutting and groove rounding all-in-one machine, in an optimal mode, the manual rotating wheel device comprises two vertical plates which are oppositely arranged and a rotating shaft connected between the two vertical plates, and a rotating hand wheel is fixedly connected to the middle position of the rotating shaft.
In the above elbow cutting and groove rounding all-in-one machine, in a preferred mode, the elbow clamping device comprises a turntable for adjusting the angle of the elbow, and the left end of the turntable is hinged to a turntable seat plate arranged below the turntable through a hinge; the rotary table is provided with a screw V-shaped block mechanism, a screw rotating hand wheel for adjusting the position of the screw V-shaped block mechanism and a fan-shaped angle adjusting vertical plate for controlling the rotation angle of the rotary table.
An arc-shaped sliding groove is formed in the fan-shaped angle adjusting vertical plate, a cylindrical pin extends out of each of two sides of the rotary table, and the cylindrical pins rotate in the arc-shaped sliding grooves by taking a hinge arranged at the left end of the rotary table as a circle center; the turntable seat plate is connected with the movable base through a turntable height adjusting device.
According to the elbow cutting groove rounding all-in-one machine, in a preferred mode, the height adjusting device is two adjustable studs which are vertically arranged.
The invention can be provided with the elbow cutting device to cut the standard elbow, then the elbow cutting device is dismounted, and then the elbow rounding roller device is arranged to round the end opening of the elbow. The invention can quickly obtain the non-standard angle elbow with accurate angle and any angle of the end face groove; simple structure, convenient operation and suitability for popularization.
Drawings
FIG. 1 is a schematic view of an elbow assembly;
FIG. 2 is a schematic diagram of a non-standard angle fitting of an elbow;
FIG. 3 is a schematic view of a symmetrical rounding of an elbow;
FIG. 4 is a force analysis diagram of a symmetrical rounding of an elbow;
FIG. 5 is a schematic structural view of the base, the manual turning wheel device and the elbow clamping device;
FIG. 6 is a schematic structural view of a transmission rotating shaft;
FIG. 7 is a schematic view of a bend cut-off groove;
FIG. 8 is a diagram of an elbow cut groove setup;
FIG. 9 is a view of the elbow rounding equipment;
FIG. 10 is a schematic view of the construction of the full circle roller device;
FIG. 11 is a front view of the inner top roller bracket;
FIG. 12 is a left side view of the inner top roller bracket;
FIG. 13 is a top view of the inner top roller bracket;
FIG. 14 is a front view of the external pressure roller base plate;
FIG. 15 is a left side view of the external pressure roller mount;
FIG. 16 is a schematic structural view of a second screw and an adjusting handwheel;
figure 17 is a schematic view of the construction of the elbow clamp;
FIG. 18 is a schematic view of the structure of the ring heater;
fig. 19 is a schematic structural view of the bend cutting apparatus.
Detailed Description
As shown in fig. 1, we make a rotary plate 501 by the shape feature of the standard elbow, and place the standard elbow 10 on the rotary plate 501. The elbow position is accurately positioned, and then the hinge 508 arranged at the center of the curvature radius of the elbow is used as a rotation center by rotating the rotary table 501, and no matter how much the rotation is, the axis of the elbow is always tangent to the axis of the supposed formal construction pipe 11 at a fixed point, which is called as an 'always tangent point p'. The "permanent tangent point p" of the elbows of different diameters is on a fixed line perpendicular to the axis of the pipe 11 assumed to be constructed formally, and this line coincides with the trajectory of the cutting line of the elbow 10 that we will cut, so we will refer to it as the "permanent tangent line q".
After the elbow is rotated to the required angle, the corresponding position of the outside of the elbow section passing through the "permanent tangent line q" and perpendicular to the plane of the turntable base plate 506 is marked as the starting point and the ending point of the cutting as shown in fig. 2. And finally, cutting off the part n to be cut off by using an elbow cutting groove rounding all-in-one machine.
The core of the principle is that no matter what angle the standard elbow 10 turns to, the cutting line of the standard elbow needs to be vertical to the axis of the formal construction pipe 11, and the cut part is moved to the shadow part. The end opening of the elbow cutting line and the end opening of the assumed formal construction pipe are always in a perfect circle to perfect circle, and guarantee is provided for the assembly of the elbow cutting end surface and the subsequent formal construction pipe.
Although we have accurately intercepted the elbow with non-standard degree, because the elbow is basically manufactured by hot forging with a shaping die, because of the limitation of the process, the middle and outer side of the elbow are provided with a section of free deformation section, and the section of ovality is larger. And the cut elbow will generate certain deformation due to the release of the internal stress, so the roundness can be influenced to a certain extent. Thereby affecting the quality of pipe fitting assembly, welding and the like in subsequent processes. Thus requiring a full circle of the elbow port. In the past, various elbow manufacturers adopt a shaping die and an oil press to forge and press to complete a circle. The method has the advantages of high equipment investment cost and complex and various tooling moulds. The diameter of the elbow ellipse is considered to be divided into a short axis and a long axis, and a certain amount of misalignment is necessarily generated during assembly just because the short axis and the long axis of the elbow and the end face of the pipe are different. Generally, the major axis of the ellipse will be larger than the design standard dimension of the elbow, while the minor axis will be smaller than the design standard dimension of the elbow, so we can round the end of the elbow by pressing inward on the major axis of the ellipse and pushing outward on the minor axis of the ellipse.
The concrete principle is as shown in fig. 3, an inner top roller assembly 206 is arranged on the inner side of the end of the elbow, an outer pressure roller assembly 201 is correspondingly arranged on the outer side, and the inner roller and the outer roller form a concentric roller set. The roller group rotates around the rotating shaft 102, after the matched annular heating device is heated, the inner roller and the outer roller rotate manually, the outer roller is stressed to extrude inwards when the outer roller rotates to the elliptical long axis, the inner roller is stressed to eject outwards when the outer roller rotates to the elliptical short axis, and the inner roller rotates repeatedly through multiple times of micro-feeding until the inner roller completely reaches the perfect circle of the design standard.
As shown in fig. 4, the key principle is that the outer extrusion and the inner ejection are simultaneously at two ends of the major axis or the minor axis of the ellipse, and the stress of the roller group is always two groups of acting forces with equal magnitude and opposite directions, namely:
when the shaft is long: f press 1 ═ F press 2F to 1 ═ F to 2,
short axis: fttop 1 ═ fttop 2F to 3 ═ fttop 4,
the forces cancel each other to zero on the spindle. Namely: the stress is uniform. Because the roller group adopts a symmetrical structure, the rolling wheel group can achieve the rounding effect of 360 degrees by repeatedly rotating within the range of 180 degrees, the efficiency is greatly improved, and the design concept of symmetrical shaping is achieved.
Also, this method can be applied to pipe end rounding for construction.
Cutting off small angles on the elbow when the elbow is cut, and reserving the large angle of the elbow required by people, for example, the elbow with 78 degrees of non-standard angle is required, and the elbow with 90 degrees of standard angle can be cut off for 12 degrees; a 56 deg. non-standard angle bend is required and we can cut 4 deg. with a 60 deg. standard bend. Also, where a non-standard angle bend of 40 ° or 20 ° is desired, we can use a standard bend of 45 ° or 30 ° for interception.
In practical applications, even standard elbows can have errors. Therefore, the angle measuring instrument is required to check whether the angle of the elbow is accurate, if an error is recorded, the error is corrected during assembly, and the angle error of the cut forming elbow is avoided. If the detected standard elbow angle is not enough, the insufficient angle value can be cut off less in the cut elbow angle, and if the detected elbow angle is slightly larger, the opposite is true.
The port of the standard elbow has an ovality error, and in order to ensure that the center of the end face of the elbow is accurately positioned on the 'permanent tangent point p', the major axis and the minor axis of the elbow need to be measured.
As shown in fig. 5, the integral design of the elbow cutting groove rounding all-in-one machine comprises a base 6, a hand wheel rotating device 1 fixed above the base 6, a moving base 7, a slot arranged on the moving base 7, an elbow clamping mechanism 5 for elbow rotation positioning and other mechanisms; the annular heating means 3 and the bottom end of the elbow clamping means 4 can be connected to the moving base 7 by insertion into the insertion slot.
The hand wheel transmission device 1 is a power source and a transmission mechanism of the whole device, and the power source of the device can be electric power source or manual power source. The electric power input consists of a motor and a speed reducer. The hand wheel transmission device has the advantages that the required torque and speed of the device are very low, the manual transmission can be completely met, the principle of the device is novel, the maintenance is convenient, the operation is rapid, the manual transmission is used as a power source for design and explanation, and the device is named as a hand wheel transmission device.
The base 6 is a device for supporting and connecting various functional mechanisms, one side of the base 6 is provided with a vertical plate 101 for supporting the transmission device, the other end of the base 6 is provided with a sliding groove for installing the movable base 7, a bolt hole is designed on a flat plate of the base 6, and the whole device can be installed on a platform or a truss according to the working site conditions.
The hand wheel transmission device is positioned on one side of the base 6, and two vertical plates 101 are designed on the base 6 and used for supporting a rotating shaft 102 of the hand wheel transmission mechanism 1. The rotating shaft 102 is connected with the vertical plate 101 through a sliding bearing, the sliding bearing is made of tin bronze, and an oil groove is formed in the sliding bearing so as to adapt to low-speed rotation during cutting and rounding.
As shown in fig. 5 and 6, the middle part of the rotating shaft 102 between the two vertical plates 101 is designed into a hexagon for transmission. A large hand wheel 103 is designed at the hexagonal position of the rotating shaft 102, and power is transmitted to each functional component by rotating the hand wheel 103. The shaft extension end of the rotating shaft 102 is designed to be a regular quadrangle and is used as a connecting interface when various functional components are replaced, such as a cutting mechanism and a whole circle roller group.
The opposite side of base 6 is the removal spout, and the removal spout is used for the installation to remove base 7, and removal base 7 can realize equipping the function of cutting elbow, heating elbow terminal surface different stations such as. In order to realize the movement of the movable base 7, a set of eccentric link mechanism 8 is designed at the end part of the base 6, when the elbow needs to move forwards, the eccentric handle 801 is pressed down, the eccentric handle 801 rotates, and the link mechanism is connected with the movable base and hinged to rotate and pushes the base to move forwards; when the elbow position needs to be retracted, the eccentric handle 801 is pulled up. An elbow clamping mechanism 5 for elbow rotation positioning is arranged on the movable base 7, the elbow clamping mechanism 5 comprises a rotary table 501 for elbow angle adjustment, and the left end of the rotary table 501 is hinged on a rotary table seat plate 506 arranged below the rotary table 501 through a hinge; the rotary table 501 is used for positioning, clamping and angle adjustment of an elbow, so that a lead screw V-shaped block mechanism 502, a lead screw rotating hand wheel 503 for adjusting the position of the lead screw V-shaped block mechanism 502, and a sector angle adjusting vertical plate 504 for controlling the rotation angle of the rotary table 501 are designed on the rotary table 501;
the sector angle adjusting vertical plate 504 is provided with an arc chute and corresponding scales or is directly placed on the rotary plate 501 by an angle measuring instrument (not shown in the figure) with the precision of 0.01 degree for angle measurement.
A cylindrical pin 505 extends from each of two sides of the rotary disc 501, and the cylindrical pins 505 rotate in the arc-shaped sliding grooves by taking a hinge arranged at the left end of the rotary disc 501 as a circle center; the turntable seat plate 506 is connected with the movable base 7 through an adjustable stud, namely a turntable height adjusting device 507, so that the bending centers of the elbows with different calibers can be adjusted up and down, the centers of the cut end surfaces of the elbows with different specifications, namely the 'permanent tangent point p' fall on the same point, and the point is tangent to the axis of the transmission rotating shaft 102.
The cutting groove rounding principle of the non-standard angle elbow is that the cutting line of the standard elbow 10 must be perpendicular to the axial line of the supposed formal construction pipe 11, namely the axial line of the rotating shaft 102 of the equipment, no matter how the standard elbow rotates.
And (4) cutting a certain angle from the standard elbow to obtain the elbow with a non-standard angle. The specific equipment structure is shown in fig. 8, and comprises a base 6, a hand wheel rotating device 1 fixed above the base 6, a moving base 7, a slot positioned on the moving base 7, an elbow clamping mechanism 5 used for elbow rotation positioning and other mechanisms, wherein an elbow cutting device is connected to the end of a rotating shaft 102 of the hand wheel rotating device 1. In this case, the ring heater 3 and the bend clamp 4 need not be assembled.
As shown in fig. 19, the elbow cutting device 9 is composed of a radial adjustment device 901, a length adjustment device 902 and a cutting torch 904. The middle of the radial adjusting device is designed into a square hole, and the square shaft extension of the transmission rotating shaft 102 is inserted into the square hole to realize the input of transmission force. Wing plates provided with first long grooves are arranged on two sides of the radial adjusting device 901, and two length adjusting devices 902 are respectively arranged on the first long grooves of the wing plates on the two sides of the radial adjusting device 901. Two length adjusting devices 902 are movably mounted on the first long slots of the wing plates on both sides of the radial adjusting device 901 by a first pressing screw.
The two length adjusting devices 902 are telescopic sleeve structures, the tail ends of the two length adjusting devices 902 are provided with second long grooves, and the two second long grooves are respectively provided with two cutting torches 904 with working ends arranged oppositely; the gas inlet end of the cutting torch 904 is connected with a gas source pipe 903.
The cutting torch 904 is connected to the second long slot of the length adjusting device 902 in an angle-adjustable manner by a second compression screw.
During cutting, the torch 904 is adjusted to the corresponding position, i.e., the position on which we scribe lines. The elbow 10 generally needs a groove, and the equipment has a function of cutting off the groove integrally. The offset of the torch 904 is first calculated based on the skin thickness to deflect the torch 904 to a set bevel angle. The ignition punctures the pipe wall of the elbow 10, the hand wheel 103 is rotated, and after one circle of rotation, the elbow is cut.
The concrete construction method for assembling and cutting the elbow 10 is as follows:
first, the elbow 10 is assembled to the turntable 501, and the lead screw rotating handwheel 503 is rotated to move the lead screw V-block mechanism 502 and clamp the elbow 10.
Secondly, the turntable 501 is rotated to the angle required to be cut, and the turntable is positioned. Note that: when there is an angular error in the standard elbow 10, a correction must be made when rotating the turntable 501 to ensure that the angle after cutting is the angle we need.
Thirdly, the height of the turntable 501 is adjusted by the turntable height adjusting device 507 according to the caliber size of the elbow 10, so that the center of the end face of the elbow 10 to be cut is tangent to the axis of the rotating shaft 102 of the manual turning wheel device 1.
Fourthly, adjusting the position of the cutting torch 904, aligning the cutting position, and adjusting the angle of the cutting torch 904 and the offset of the cutting line when the groove is needed.
Note that: the cutting line offset needs to be calculated according to the elbow skin thickness and the groove angle, as shown in fig. 7, the calculation formula is as follows:
L＝t*tan(θ)
l is offset t, elbow skin thickness theta and groove angle
In FIG. 7, 10a indicates the portion of elbow 10 that has been cut away, 10b indicates the portion of the elbow that has been left, 904a indicates the location of the vertical cut torch, and 904b indicates the location of the torch during beveling.
And fourthly, igniting and cutting, namely adjusting the flow of oxygen to ignite and puncture the pipe wall of the elbow at one end to be cut, moving the cutting torch to a cutting starting position, and rotating the positioner to cut. Fourthly, finishing cutting, cleaning the port and measuring the size of a cutting angle.
The manufacturing process precision of the elbow and the cut elbow will generate certain deformation due to the release of the internal stress, and the end face of the cut of the elbow will be elliptic. In order to achieve the assembly precision of the pipe and the elbow, the end part of the elbow needs to be rounded without generating a gap.
The rounding principle is that an inner top roller and an outer pressure roller rotate around the end part of a elbow on the same axis, the inner top roller is ejected outwards, and the outer pressure roller is extruded inwards to realize rounding.
As shown in fig. 9, the elbow port rounding machine includes a manual turning wheel device 1 fixed on the left side of a base 6, an elbow rounding roller device 2 connected with the manual turning wheel device 1, and an elbow clamping device 4 arranged on the right side of the elbow rounding roller device 2, and an elbow clamping device 5 arranged on the right side of the elbow clamping device 4.
The base 6 is provided with a movable base 7, and the annular heating device 3 and the elbow clamping device 4 are detachably connected to the movable base 7.
The manual rotating wheel device 1 comprises two vertical plates 101 which are arranged oppositely and a rotating shaft 102 connected between the two vertical plates 101, and the middle position of the rotating shaft 102 is fixedly connected with a rotating hand wheel 103.
In order to adapt to elbows with different skin thicknesses and perform feeding motion during rounding, the rounding roller device 2 is provided with an inner top roller adjusting mechanism and an outer pressure roller adjusting mechanism.
As shown in fig. 9 and 10, the inner top roller adjusting mechanism includes an elongated inner top roller bracket 203 having a mounting hole 205 in the middle, two first flanges 203a protruding outwards are provided at two sides of the mounting hole 205 along the length direction of the inner top roller bracket 203, two first through holes parallel to the inner top roller bracket 203 are provided on the two first flanges 203a, inner top roller assemblies 206 disposed in opposite directions are inserted into the two first through holes, each inner top roller assembly 206 includes a first screw rod 206a penetrating through the first through hole and having a thread on the outer side, and an inner top roller rotatably connected to one end of the first screw rod 206a away from the mounting hole 205; an intermediate adjusting nut 204 is arranged between the two first flanges 203a, and the other end of the first screw 206a is screwed inside the adjusting nut 204.
When the adjusting nut 204 is turned, the two inner top roller assemblies 206 move simultaneously in a direction away from the adjusting nut 204 or in a direction close to the adjusting nut 204.
The external pressure roller adjusting mechanism comprises two L-shaped external pressure roller seat plates 202, the long sides of the two external pressure roller seat plates 202 are fixedly connected to the two sides of the inner top roller bracket 203, and the short sides of the two external pressure roller seat plates 202 are opposite to the first flange 203 a; a second through hole with threads formed inside is formed in the middle of the short sides of the two external pressure roller seat plates 202, and an external pressure roller assembly 201 parallel to the long sides of the external pressure roller seat plates 202 penetrates through the second through hole; the external pressure roller assembly 201 comprises a second screw 201a screwed in the second through hole and an external pressure roller rotatably connected to one end of the second screw 201a close to the inner top roller assembly 206, and the other end of the second screw 201a is connected with an adjusting handwheel 207.
When the adjusting handwheel 207 is turned, the external pressure roller assembly 201 moves away from the internal top roller assembly 206 or moves close to the internal top roller assembly 206.
An elbow rounding space is formed between the external pressure roller and the internal top roller.
As shown in fig. 11 to 15, the connection manner of the inner top roller bracket 203 and the outer pressure roller seat plate 202 of the present invention is further improved, a sliding connection mechanism is disposed between the inner top roller bracket 203 and the outer pressure roller seat plate 202, the sliding connection mechanism includes a sliding rail 203b disposed along the length direction of the inner top roller bracket 203, and a sliding groove 202b disposed on the long side of the outer pressure roller seat plate 202 for accommodating the sliding rail 203 b; the position of the outer pressure roller shoe 202 on the inner top roller bracket 203 can be adjusted by the sliding connection mechanism.
As shown in fig. 10, the inner top roller bracket 203 and the long side of the outer pressure roller base plate 202 are fixed by a plurality of sets of bolts 208 at equal intervals.
The space between the bolts 208 is designed according to the elbow with different specifications, so that the complete circle of the elbow with different specifications can be realized by adjusting the position of the external pressure roller seat plate 202 on the internal top roller bracket 203.
By rotating the adjusting handwheel 207 on the external pressure roller assembly 201, the second screw 201a rotates between the external pressure roller seat plate 202 and the external pressure roller and pushes the external pressure roller to move so as to realize radial movement of the roller.
As shown in fig. 16, in order to make the movement of the external pressure roller more efficient, the second screw 201a is a T-shaped differential screw with two sections of different diameters and pitches and opposite turning directions, and a thinner section of the second screw 201a is screwed into a threaded hole formed at the end of the external pressure roller; the thicker section of the second screw 201a is screwed in the second through hole, and the thicker end of the second screw is fixedly connected with the adjusting hand wheel 207.
As shown in fig. 15, a guide dovetail groove 202c is formed at one side of the external pressure roller base plate 202, which is in contact with the inner top roller and the external pressure roller, and the inner top roller and the external pressure roller are provided with sliders sliding in the guide dovetail groove 202 c. In the process of adjusting the radial dimension of the externally pressing roller assembly 201, the roller cannot rotate, so that the roller is ensured to be always in the same direction when the roller moves radially, and the roller can smoothly complete the circle. And the inner top roller is also arranged at the other end of the same dovetail groove, so that the rollers can always keep the same direction. The inner top roller assembly 206 is adjusted by using the middle adjusting nut 204, and the first screw 201 connected with the inner top roller extends outwards or inwards by rotating the middle adjusting nut 204 so as to meet the requirement of rounding elbows with different skin thicknesses.
As shown in fig. 9 and 17, the ring-shaped heating device 3, the bend clamping device 4, and the bend holding device 5 are provided on the moving base 7. The elbow is clamped by an elbow clamping device 4. The elbow clamping device 4 is characterized in that a lower clamp body 402 is connected with a clamp base 401, the upper part is provided with a fastening snap ring 405, one end of the fastening snap ring 405 is hinged with the clamp body 402 through a hinge 404, and the other end of the fastening snap ring is clamped and fixed on the clamp body 402 through a loose joint nut device 403.
The rounding of the elbow end is mainly achieved by plastic deformation. In order to plastically deform the bend, the bend end should be heated, so a set of annular heating devices 3 is designed to heat the bend.
As shown in fig. 18, the annular heating device 3 includes an annular heating ring 301 formed by bending a red copper tube, a plurality of small holes are drilled inside the heating ring 301, a gas mixing cavity 302 is designed at the gas inlet of the heating ring 301, a gas inlet valve 304, an oxygen connecting tube 305 and an acetylene connecting tube 306. When heating, in order to prevent the whole-circle roller group from being heated and annealed, the elbow needs to move backwards for a certain distance, after heating, the elbow can be closed, and then the elbow is quickly pushed to the whole-circle roller group through the eccentric link mechanism 8 to carry out whole circle.
The concrete construction method for rounding the elbow is as follows:
firstly, the elbow clamping device 5 is retracted to the outermost side of the base 6 by the eccentric link mechanism 8, the elbow is assembled on a turntable 501 of the elbow clamping device 5, and the angle of the turntable 501 is adjusted to enable the end face of the other end of the elbow to be perpendicular to the horizontal plane. The elbow is clamped by an elbow clamping device 4.
Second, the installation of the rounding roller device 2, which can be done simultaneously with the fitting of the elbow, is performed. (Note: the rounding roller assembly 2 needs to be angled so that the inner top roller can fit in from the major axis of the elbow ellipse.)
Thirdly, the annular heating device 3 is assembled, after the position is adjusted, ignition is carried out, and the oxygen is adjusted to control the heating temperature.
Fourthly, the heating temperature is judged by an observation method, and the annular heating device 3 is closed and moved away after the temperature reaches the standard.
Fifthly, the eccentric link mechanism 8 is used for pushing the elbow clamping device 5 to the rounding roller device 2 and rotating the rounding roller device 2. During rounding, the hand wheel 103 is rotated to repeatedly roll within 180 degrees, when the rolling reaches a certain degree, radial feeding is immediately increased when the sensed resistance is reduced, and the hand wheel is continuously rotated until the end face of the elbow is round.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (9)
1. An elbow cutting groove rounding all-in-one machine is characterized in that,
comprises a manual rotating wheel device (1) fixed on the left side of a base (6), an elbow cutting device (9) or an elbow rounding roller device (2) connected with the manual rotating wheel device (1),
the right side of the elbow cutting device (9) or the elbow rounding roller device (2) is provided with an annular heating device (3), the right side of the annular heating device (3) is provided with an elbow clamping device (4), and the right side of the elbow clamping device (4) is provided with an elbow clamping device (5);
a movable base (7) is arranged on the base (6), and the annular heating device (3) and the elbow clamping device (4) are detachably connected to the movable base (7);
the elbow clamping device (5) is fixedly connected to the movable base (7);
the elbow cutting device (9) comprises a long-strip-shaped radial adjusting device (901), a square hole for connecting the manual rotating wheel device (1) is formed in the middle of the radial adjusting device (901), wing plates with first long grooves are arranged on two sides of the radial adjusting device (901), and two length adjusting devices (902) are respectively arranged on the first long grooves of the wing plates on two sides of the radial adjusting device (901) in a movable mode through first compression screws;
the two length adjusting devices (902) are of a telescopic sleeve structure, the tail ends of the two length adjusting devices (902) are provided with second long grooves, and the two second long grooves are respectively provided with two cutting torches (904) with working ends arranged oppositely; the gas inlet end of the cutting torch (904) is connected with a gas source pipe (903);
the cutting torch (904) is connected to a second long groove of the length adjusting device (902) in an angle-adjustable mode through a second compression screw.
2. The elbow cutting groove rounding integrated machine according to claim 1, wherein the rounding roller device (2) comprises an inner top roller adjusting mechanism and an outer pressure roller adjusting mechanism;
the inner top roller adjusting mechanism comprises an elongated inner top roller bracket (203) provided with a mounting hole (205) sleeved at the end of a rotating shaft (102) in the middle, two first flanges (203a) protruding outwards are arranged on two sides of the mounting hole (205) along the length direction of the inner top roller bracket (203), two first through holes parallel to the inner top roller bracket (203) are arranged on the two first flanges (203a), inner top roller assemblies (206) arranged along opposite directions penetrate through the two first through holes, each inner top roller assembly (206) comprises a first screw rod (206a) penetrating through the first through hole and provided with threads on the outer part, and an inner top roller rotatably connected to one end, far away from the mounting hole (205), of the first screw rod (206 a); an intermediate adjusting nut (204) is arranged between the two first flanges (203a), and the other end of the first screw rod (206a) is screwed in the adjusting nut (204);
when the adjusting nut (204) is turned, the two inner top roller assemblies (206) move towards the direction far away from the adjusting nut (204) or towards the direction close to the adjusting nut (204) simultaneously;
the external pressure roller adjusting mechanism comprises two L-shaped external pressure roller seat plates (202), the long edges of the two external pressure roller seat plates (202) are fixedly connected to the two sides of the internal top roller bracket (203), and the short edges of the two external pressure roller seat plates (202) are opposite to the first flange (203 a); the middle parts of the short sides of the two external pressure roller seat plates (202) are provided with second through holes with threads formed inside, and external pressure roller assemblies (201) parallel to the long sides of the external pressure roller seat plates (202) are arranged in the second through holes in a penetrating manner; the external pressure roller assembly (201) comprises a second screw rod (201a) screwed in the second through hole and an external pressure roller rotatably connected to one end, close to the internal top roller assembly (206), of the second screw rod (201a), and the other end of the second screw rod (201a) is connected with an adjusting hand wheel (207);
when the adjusting handwheel (207) is rotated, the external pressure roller assembly (201) moves to the direction far away from the internal top roller assembly (206) or the direction close to the internal top roller assembly (206);
and a full-circle space for accommodating the pipe wall of the elbow port is formed between the external pressure roller and the internal top roller.
3. The elbow cutting groove rounding all-in-one machine as claimed in claim 2, wherein a sliding connection mechanism is arranged between the inner top roller bracket (203) and the outer pressing roller seat plate (202), and the sliding connection mechanism comprises a sliding rail (203b) arranged along the length direction of the inner top roller bracket (203) and a sliding groove (202b) arranged on the long edge of the outer pressing roller seat plate (202) and used for accommodating the sliding rail (203 b); the position of the outer pressure roller seat plate (202) on the inner top roller bracket (203) is adjustable by the sliding connection mechanism.
4. The elbow cutting groove rounding all-in-one machine according to claim 2 or 3, characterized in that the inner top roller bracket (203) and the long edge of the outer pressure roller seat plate (202) are fixed through a plurality of groups of bolts (208).
5. The elbow cutting and beveling integrated machine according to claim 2, wherein a guide dovetail groove (202c) is formed in one side of the outer pressing roller seat plate (202) in contact with the inner top roller and the outer pressing roller, and the inner top roller and the outer pressing roller are provided with sliding blocks which slide in the guide dovetail groove (202 c).
6. The elbow cutting and beveling integrated machine as claimed in claim 2 or 5, wherein the second screw (201a) is a T-shaped differential screw with two sections of different diameters and pitches and opposite rotation directions, and the thinner section of the second screw (201a) is screwed in the threaded hole at the end of the external pressure roller; the thicker section of the second screw rod (201a) is screwed in the second through hole, and the end part of the thicker section of the second screw rod is fixedly connected with an adjusting hand wheel (207).
7. The elbow cutting and groove rounding all-in-one machine according to claim 1 is characterized in that the manual rotating wheel device (1) comprises two vertical plates (101) which are arranged oppositely and a rotating shaft (102) connected between the two vertical plates (101), and a rotating hand wheel (103) is fixedly connected to the middle position of the rotating shaft (102).
8. The elbow cutting groove rounding all-in-one machine according to claim 1, characterized in that the elbow clamping device (5) comprises a turntable (501) for elbow angle adjustment, and the left end of the turntable (501) is hinged on a turntable seat plate arranged below the turntable (501) through a hinge; a screw V-shaped block mechanism (502), a screw rotating hand wheel (503) for adjusting the position of the screw V-shaped block mechanism (502) and a fan-shaped angle adjusting vertical plate (504) for controlling the rotating angle of the rotary disc (501) are arranged on the rotary disc (501);
an arc-shaped sliding groove is formed in the fan-shaped angle adjusting vertical plate (504), a cylindrical pin (505) extends out of each of two sides of the rotary plate (501), and the cylindrical pins (505) rotate in the arc-shaped sliding grooves by taking a hinge arranged at the left end of the rotary plate (501) as a circle center; the turntable seat plate is connected with the movable base (7) through a turntable height adjusting device (507).
9. The elbow cutting groove rounding all-in-one machine according to claim 8, characterized in that the turntable height adjusting device (507) is two vertically arranged adjustable studs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431243.0A CN108247356B (en) | 2017-12-26 | 2017-12-26 | Elbow cut-off groove rounding all-in-one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711431243.0A CN108247356B (en) | 2017-12-26 | 2017-12-26 | Elbow cut-off groove rounding all-in-one |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108247356A CN108247356A (en) | 2018-07-06 |
| CN108247356B true CN108247356B (en) | 2020-06-09 |
Family
ID=62723936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711431243.0A Active CN108247356B (en) | 2017-12-26 | 2017-12-26 | Elbow cut-off groove rounding all-in-one |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108247356B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109227715B (en) * | 2018-08-01 | 2021-04-20 | 安徽信息工程学院 | Rotation angle adjusting device |
| CN109158920B (en) * | 2018-11-16 | 2024-03-08 | 芜湖新兴新材料产业园有限公司 | Flange elbow drilling tool |
| CN112091247B (en) * | 2020-09-11 | 2022-05-17 | 中国航发贵州黎阳航空动力有限公司 | Universal clamp for elbow turning |
| CN115055780A (en) * | 2022-06-06 | 2022-09-16 | 国家石油天然气管网集团有限公司 | Semi-automatic accurate cutting prefabricating device for pipeline elbow |
| CN115284071A (en) * | 2022-09-14 | 2022-11-04 | 上海外高桥造船有限公司 | Cutting device and operation equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3699828A (en) * | 1970-12-02 | 1972-10-24 | Victaulic Co Of America | Pipe groover |
| CN103302693A (en) * | 2013-06-24 | 2013-09-18 | 北京泰宁科创雨水利用技术股份有限公司 | Manual pipeline beveling machine and method for construction free from inward bulged welding joints with manual pipeline beveling machine |
| CN103862215A (en) * | 2014-03-26 | 2014-06-18 | 南京工程学院 | Assembly welding tool device and method commonly used for large curved surface end sockets of pressure containers |
| CN203918086U (en) * | 2014-05-13 | 2014-11-05 | 天津市金立钢管有限公司 | Pipe end groove processing gradient adjusting device |
| CN104723107A (en) * | 2015-03-10 | 2015-06-24 | 阜新华通管道有限公司 | Continuous pushing and cutting equipment for entire pipe of bend |
| CN205587982U (en) * | 2016-05-09 | 2016-09-21 | 上海振华重工(集团)股份有限公司 | Auxiliary fixtures device with adjustable steel bridge descending line tubular brace board processing preparation |
-
2017
- 2017-12-26 CN CN201711431243.0A patent/CN108247356B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3699828A (en) * | 1970-12-02 | 1972-10-24 | Victaulic Co Of America | Pipe groover |
| CN103302693A (en) * | 2013-06-24 | 2013-09-18 | 北京泰宁科创雨水利用技术股份有限公司 | Manual pipeline beveling machine and method for construction free from inward bulged welding joints with manual pipeline beveling machine |
| CN103862215A (en) * | 2014-03-26 | 2014-06-18 | 南京工程学院 | Assembly welding tool device and method commonly used for large curved surface end sockets of pressure containers |
| CN203918086U (en) * | 2014-05-13 | 2014-11-05 | 天津市金立钢管有限公司 | Pipe end groove processing gradient adjusting device |
| CN104723107A (en) * | 2015-03-10 | 2015-06-24 | 阜新华通管道有限公司 | Continuous pushing and cutting equipment for entire pipe of bend |
| CN205587982U (en) * | 2016-05-09 | 2016-09-21 | 上海振华重工(集团)股份有限公司 | Auxiliary fixtures device with adjustable steel bridge descending line tubular brace board processing preparation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108247356A (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108247356B (en) | Elbow cut-off groove rounding all-in-one | |
| CN207655672U (en) | Elbow port rounding machine | |
| CN103978340B (en) | A kind of encircling welding equipment of aircraft pipe component and circular-seam welding method | |
| CN205463730U (en) | Coalignment with adjustable longitudinal welded pipe is online | |
| CN102139457A (en) | Clamping deformation resistant jig for machining large-diameter elbow | |
| AU2021204565B2 (en) | Rolled pipe thread processing method, rolling head, apparatus, module, production line, and product thereof | |
| CN208322742U (en) | Thin-wall pipe clamping tooling | |
| CN115121894B (en) | Vacuum brazing method and equipment for flareless pipeline connecting piece for aero-engine | |
| CN110125557B (en) | Automatic pipe centering, clamping and rotating device for laser cutting | |
| JP2005523160A (en) | Swivel roller groove forming device for pipe | |
| CA2995466C (en) | Method, module and apparatus for roll-processing external pipe thread, and external pipe thread production line | |
| CN202129649U (en) | Anti-clamping deformation machining clamp for large-caliber elbow | |
| CN108787803B (en) | Thin-wall pipe orifice shaping tool | |
| CN103105187B (en) | A kind of Three-claw centering device | |
| CN103920985A (en) | Fast preheating unit for thin-walled pipe type part axial friction welding | |
| CN104942050B (en) | Pipe orifice adjustment device for building construction pipe | |
| CN207655698U (en) | Full circle roller devices for elbow port rounding machine | |
| CN217941472U (en) | Seamless steel tube bending device convenient to adjust | |
| CN110977118B (en) | Special-shaped section wheel circle welding limiting device | |
| CN215032632U (en) | A compound steel pipe flanging equipment of inside lining for producing turn-ups of different specifications | |
| CN115255798A (en) | Pipe orifice regulator for building construction pipeline | |
| CN208810875U (en) | A kind of major-diameter thick-wall aviation petroleum pipeline bend molding apparatus | |
| CN108050323B (en) | Accurate butt joint device for flange with diameter and connecting pipe and installation and use method thereof | |
| CN107717324B (en) | Rolling press forming knife and rolling tool for thin-walled resonant rod | |
| CN207547347U (en) | Steel pipe spiral groove rolling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |