CN86106399A

CN86106399A - The processing method of bend pipe inner surface and device

Info

Publication number: CN86106399A
Application number: CN198686106399A
Authority: CN
Inventors: 詹姆斯·威廉姆·香恩昂
Original assignee: Vickers Australia Ltd
Current assignee: Vickers Australia Ltd
Priority date: 1985-11-07
Filing date: 1986-11-07
Publication date: 1987-07-08
Also published as: EP0247072A1; WO1987002921A1

Abstract

Be used for swan-neck and swan neck (calling bend pipe in the following text) are carried out process and the equipment that the inner surface coating is processed, wherein a bend pipe being positioned at one can be on the fixture of the bearing support that main shaft rotates.Bend pipe can be so positioned: its section in the radial direction is positioned on the processing plane with this axis normal substantially, also has, and in the process of described axis rotation, the center of circle of section overlaps with described axis substantially at support.One processing head is positioned on the described processing plane, near described axis.It can to described in the radial direction, the annulus on the above surface of section circumference, apply processing.

Description

The processing method of bend pipe inner surface and device

The present invention relates to swan-neck and the inner cavity surface of swan neck (calling bend pipe in the following text) or the processing method of inner surface.

Say that distinguishingly the present invention can be applicable to, for example, with overlaying method be covered with anti abrasive to the inner surface of metal winding pipe and (or) corrosion resistant metal lining.According to the different requirements to lining, except metal lining, the present invention also is applicable to deposited plastics or ceramic lining.In addition, also it should be noted that the process of the deposited lining that the present invention proposes, except built-up welding, also have flame-spraying technology, comprising plasma and oxygen-acetylene flame sprayed coating metal and (or) ceramic process, and other spraying coating process except flame-spraying technology.Also have, the present invention also can be applicable to, and with the local surfaces heat-treating methods inner surface of bend pipe is processed.This heat treatment of carrying out with thermal source can be quenched or not quench subsequently.

According to the present invention, also proposed to the inner cavity surface of swan-neck or swan neck (calling bend pipe in the following text) or the equipment that inner surface is processed, comprising a support; Be used to make the drive unit of this support around a main axis rotation; The support that has fixture, this device can be fixed bend pipe like this: a section in the radial direction of bend pipe, be located substantially on the processing plane with described axis normal, and when this support when described axis rotates, the center of circle of described section is dead in line therewith all the time basically; One processing head is positioned on the described processing plane, near described axis, and can process an annulus (along described radially section) on described surface, at this moment, described support and one is fixed in the bend pipe above it, under the effect of described drive unit, be rotated, so that described annulus moves past processing head.

The invention allows for the processing method that the inner surface of swan-neck and swan neck (calling bend pipe in the following text) is processed, be about to a bend pipe and be fixed on one and can be rotated, on the fixture of a bearing support around main shaft; Bend pipe is so fixing, i.e. it section in the radial direction is located substantially on the processing plane with described axis normal, when described support when described axis rotates, the center of circle of described section is located substantially on the described axis; One processing head is positioned on the described processing plane, near described axis, and can process an annulus (along described section in the radial direction) on described surface, at this moment, described support and one is fixed in the bend pipe above it, under the effect of described drive unit, be rotated, so that described annulus moves past processing head.

Fixture can be a cushion block, and bend pipe promptly is fixed on above it.It is suitable with the curvature diameter and the radius of bend pipe that the shape fabricating of this cushion block becomes, and entire equipment is designed to, and only is suitable for the inner surface of the essentially identical bend pipe of machining shape.Can use, or support pulls down from drive system together with the cushion block above it, changes alternative method cushion block, with fit in processing on the same equipment have different curvature overall diameters and (or) inner surface of radius bend pipe.Another kind of scheme is, cushion block is adjustable, so as can with the curvature overall diameter of certain limit and (or) bend pipe of radius is fixed on above it.

At least to a kind of bend pipe with certain curvature radius, support is movably with respect to drive system.Scheme is to make the support can be mobile so preferably, can make the section in the radial direction on the bend pipe, be positioned at continuously with the perpendicular processing plane of rotary main shaft line on, its center of circle also is dead in line therewith.For this purpose, scheme is to make this support can unify pivot to rotate preferably, and this pivotal axis and main shaft are rectangular, but non-intersect, but are positioned at the one side.For being fixed in the bend pipe on this support, this pivotal axis overlaps with the curvature circle-center of bend pipe, or extremely close.

The better scheme of the whole device of support and drive system is, when support when main shaft rotates, bend pipe rotates with support, like this, the section in the radial direction of bend pipe will be positioned on the processing plane all the time, and its center of circle and coincides.

Processing head should be to deposited material on the bend pipe inner surface, weld metal for example, and what be suitable for operating is a kind of.The better scheme of processing head is can be with its position furnishing like this, and when support and when being fixed in bend pipe rotation above it, it can be coated on the material of fusing on the one ringwise substantially surface, and this deposited district is parallel to, and is located on or near processing plane.That is to say that processing head is suitable for material deposited around the inner surface of the definite bend pipe radial direction section in a position.So along with the rotation of support, the radially section of bend pipe will be positioned at the position of processing plane continuously, processing head can be deposited continuously in the ringwise basically deposited district along bend pipe with material, so just can form a lining on the inner surface of bend pipe.

The a certain parts of support are movably as the cushion block above it, and it can step-by-step system or continuously, and the radially section of bend pipe is moved on on the processing plane.For this purpose, scheme is one division action to be set tear open and put preferably, or a continuous action device, is fixed in bend pipe above it so that can regulate cushion block and, and with respect to the position of drive system, method is that cushion block is rotated around its pivotal axis.This movement device can be irrelevant with drive system, also can be driven by it.Yet no matter under which kind of situation, scheme is the operation that makes movement device preferably, carries out synchronously with rotatablely moving of support basically.That is to say that movement device preferably can make processing head operate like this:, also applied an annular coating region simultaneously, and had at least a complete substantially annulus to move past processing plane when support whenever rotates a circle under the drive system effect.

Be readily appreciated that this simultaneously operating of movement device will be calibration or continuous according to mode of operation, form different material form of application.So when support rotated in the calibration mode, the coating region of Xing Chenging will be real one by one annular basically, and abuts one another together in turn.But when support rotates continuously, then each coating region will be to be made of the coating region that forms one after another, a circle of complete helix shape.

Certainly, the arc length of a bend pipe, progressively inwardly reduces the minimum of a value of through inner terminal by the maximum of radial direction outermost end.If supposition is rotated with constant speed by drive systems support and the bend pipe that is fixed in above it, and processing head according to the top equipment operational circumstances of having addressed, will be derived many different results when keeping transfixion.Wherein topmost result such as following:

(a) total inner surface of bend pipe all is coated with material and applies, and is extremely near from getting owing to adjacent one after another coating region is radially being gone up on the arc length of outermost end, then can produce to each other and insert or overlapping phenomenon.

(b) fail inner surface all is coated with and apply, this is because adjacent coating region is failed to insert mutually or be overlapping, though perhaps on bend pipe inner arc length in the radial direction, be to have inserted mutually or overlapping, on outer arc length in the radial direction, all be spaced each other.

Generally speaking, these results are disadvantageous, and result (b) then disagrees with the purpose that forms overlay.From result (a), if on the outer arc length of bend pipe radial direction, be coated with the material of satisfactory q.s on the per unit area, then along applying excessive material on its inner arc length.From result (b), on the inner arc length of radial direction the material that is coated with q.s, both just like this; on radical length outer arc length; the inner surface of bend pipe will expose, and in other words, exposed inner surface does not protect it by coating processing.

The more excellent scheme of equipment of the present invention is, on the desired arc length of bend pipe, on the total inner surface of bend pipe, is coated with complete lining at least, and its thickness has the minimum of a value of reaching at least.If need the coated corrosion resistant lining, this equipment can be on total inner surface applied thickness lining uniformly basically.If need the anti abrasive lining of coating, then needed lining should be such: the lining thickness on the radial direction outer arc length of bend pipe inner surface, should be greater than the lining thickness on the radial direction inner arc length, because concerning being used to carry ducted bend pipe with frictional property material, the rubbing action of these materials is bigger at the outside left of bend pipe inner surface.

The first kind of equipment that proposes according to the present invention is when operation, and its processing head is actionless, and drive system makes support, and is fixed in the bend pipe rotation above it, and in the process that rotates a circle, its speed then changes between minimum and maximum value.In this equipment, when processing head respectively on radially inner arc length and outer arc length during coating material, its rotation is just carried out with minimum and maximum speed, like this, the quantity of material of coating, just thickness also is the width of coating region to a certain extent, progressively increases from outer arc length radially to inner arc length radially.

In the modified device of first kind of equipment, drive system makes support with the speed of substantial constant and is fixed in bend pipe rotation above it.Yet, in this example, in the process that rotates a circle, supply with the feeding speed of coating with materials device to processing head, but change.In this modified device, when processing head lays respectively at radially on the outer arc length and inner arc length, feeding speed will change between maximum and minimum of a value.Operating process remains like this, is coated with the amount of dressing, just applies the thickness of lining, also is the width of coating region to a certain extent, from the radially progressively outside arc length degree of radius vector place increase of inner arc length.In this modified device, drive system also can change rotary speed as in the previous paragraph.

Concerning first kind of equipment and remodeling thereof, more excellent scheme is that the mode by continuous circulation changes rotary speed and feeding speed respectively.Yet in each case, can make the thickness of coating material is certain basically, or thickness widening and increase with coating region.In each case, also can make adjacent coating region inserted into each other or overlap, and on the inner surface of bend pipe, form continuous lining by this way.Lining preferably, its thickness is uniformly basically, the perhaps thickness on outer arc length radially, the thickness on inner arc length radially is big.

In the second kind of equipment that is proposed, rotate and be coated with the two kinds of speed of supply or the one kind of speed of dressing, be certain basically.Yet in this equipment, processing head is like this device, and it can vibrate, and its plane, oscillation trajectory place is by main shaft, by the support of drive systems around this axis rotation.The operating process of this equipment is such, the plane of oscillation of processing head, and the camber line in the pipe bent position of coating material is parallel basically with just, but is positioned at a side of established coating region.

Make the vibrative vibrating device of processing head, more excellent scheme is, its Oscillation Amplitude is variable, and if necessary, vibration frequency also is variable.The operation of vibrating device mainly is the Oscillation Amplitude that changes processing head.When processing head on inner arc length radially during coating material, the Oscillation Amplitude minimum, when on outer arc length radially, the amplitude minimum, like this, the width of processing district is just increased by the outside arc length degree of inner arc length.

The oscillating movement of processing head also can combine with the exercises characteristics of first kind of equipment and modified device thereof, so just can be to comprehensively controlling at the quantity of material of processing district coating.In this case, the rotary speed of the most resultful variation support.

Be readily appreciated that, work as swivel elbow, so that its section in the radial direction is positioned on the processing plane, and the center of circle of this section still overlaps with rotation, and then other parts of bend pipe will depart from this main shaft.So, if this radially section just be the middle discontinuity surface of bend pipe, then the two ends of this bend pipe all will be positioned at a side of main shaft, and integrally around the rotation of this axis.When considering how to be positioned over processing head in the bend pipe, must consider this situation.

The more excellent scheme of equipment is that a processing head clamping limb is arranged, and at the one end processing head is installed.Clamping limb or telescopic, or can remove, so that bend pipe can be fixed on the support, perhaps after being fixed to bend pipe on the support, bend pipe can be penetrated into an end place of clamping limb.No matter under which kind of situation, after bend pipe fixes, just can adjust the position of clamping limb, promptly, extend in the bend pipe, and processing head is positioned at from the angled direction of main shaft, or be close on the processing plane, this plane is a section in the radial direction of bend pipe.After clamping limb is so located, preferably be in again on such plane, this plane includes main shaft, or very parallel with it.This plane had better such plane, and promptly the center of curvature of bend pipe just exists, or extremely near this plane.

Stretch into the direction of clamping limb and the angle of main shaft, depend on the radius of curvature of bend pipe and the diameter of itself, and the lateral dimension of arm.Also have, clamping limb extend into the degree in the bend pipe, also depends on these factors, and the arc length of bend pipe.In order to maximally utilise the present invention, the parameter of bend pipe should be such, and promptly clamping limb can extend into, at least just over half arc length place of bend pipe.So, after clamping limb extend in the port of bend pipe, just can apply processing to the bend pipe inner surface of half length at least, afterwards, with the bend pipe reverses its direction, so that remaining inner surface is applied processing.Be readily appreciated that except the very big bend pipe of those radius of curvature and internal diameter, the geometric parameter of general bend pipe if after bend pipe is carried out local coating, and is not turned bend pipe, will hinder total inner surface is applied.

To processing head, most convenient be remain a kind of fixedly sell basically the position to.In addition, no matter how processing head vibrates, above to mention, and also be noted that below, processing head is positioned on the processing plane basically all the time, and the radial direction section of a regulation of bend pipe also is positioned on this processing plane, so that material is coated on around this section.So, in this case, bend pipe be with respect to and be rotated around the processing head that is positioned at wherein.In order to realize this relative rotation, the port that stretches into bend pipe at section in the radial direction and the clamping limb of regulation has under the situation of certain distance at least, need make clamping limb mobile with respect to main shaft, carries out synchronously with the rotation of bend pipe.

If consider clamping limb longitudinal axis is arranged, then be readily understood that, the best motion mode that clamping limb can be realized with respect to main shaft.This motion mode is, the axis of clamping limb marks the trajectory of a rotating cone, and the vertex of a cone is a processing head.Preferably make the axis of rotating cone, substantially overlap, or angle is minimum with main shaft.Simultaneously, clamping limb preferably make its with respect to the position of axis own to keeping inconvenience basically.

In order to realize this motion of clamping limb easily, the position that keeps processing head simultaneously is to constant substantially, and processing head preferably pivotally is installed in an end of clamping limb.Also have, a pair of long pole is preferably arranged in the clamping limb, they are connected by many connectors, and constitute a quadric chain.Processing head can be a connector, perhaps is installed on the connector, or has fixing position relation with connector.

Make clamping limb produce motion by the pivoted arm device, this device links with clamping limb at the other end of the clamping limb that processing head is installed, and by the drive systems that support is rotated around main shaft, or be independent of this drive system.In a kind of equipment that the present invention proposes, the tubular axle is arranged in the pivoted arm tumbler, this device has been rotated around main shaft.From then on tubular axially departs from the pivoted arm tumbler of the side stretching, extension of main shaft, forms a supporting arm at least.Two supporting arms are preferably arranged, and the two is separated by a distance on the main shaft direction.Endless member is installed on supporting arm, and its axis is positioned at a side of main shaft, and is preferably parallel with main shaft, or substantially parallel.In these endless members, the clamping limb support unit is installed, can relatively rotate between these parts and the endless member.Clamping limb Chuan Guo And is installed on the support unit, and can swing.Operating process is such, and when the tubular axle of tumbler, when rotating synchronously with the support that is driven by drive unit, pivoted arm and the endless member above it promptly rotate around main shaft.When endless member rotates, relative rotary motion is arranged also between these parts and the support unit.Clamping limb is swung with respect to the axis of endless member, but still remains unchanged with respect to the orientation relationship of itself axis.

When processing head when coating region is operated, it can be at the both sides in this district back and forth movement.Most convenient be, the amplitude of the back and forth movement of processing head changes, and is long in the inner arc length of bend pipe like this, the amplitude minimum, outside on the arc length degree, amplitude maximum, thereby the width of coating region also increases from inside to outside.Can make the processing head back and forth movement by the shuttle unit of clamping limb.This device can make clamping limb back and forth movement longitudinally, thereby makes the processing head back and forth movement.

In a kind of equipment that the present invention proposes, comprise a cam in the shuttle unit, it can make the cam-follower back and forth movement.The motion of cam-follower promptly can be passed to the parts of motion pivotally.The clamping limb that is installed in the clamping limb support unit is positioned near the parts of above-mentioned motion pivotally, just can make clamping limb produce back and forth movement longitudinally thus.

Preferably, the clamping limb support unit is a ringwise substantially framework, the middle york piece of installing in it.The latter is installed in the framework like this, and it can be around first axis swing, and this axis is arranged in a plane that is substantially perpendicular to main shaft.One gimbal is contained in the york piece.On gimbal, or the clamping limb that can pivotally swing is installed in the gimbal.Gimbal can be around second an axis swing parallel with first axis.The reciprocating motion of cam-follower acts on york piece, acts on clamping limb by gimbal then.

Preferably, york piece is used in the reciprocating motion of cam-follower by a lever system.But the reciprocating amplitude of illustrated so far clamping limb is invariable.Best is that two lever arms of lever system couple together pivotably.These are parallel in the lever arm of first and second axis one, can pass through adjusting device, regulate in the vertical, so just can make clamping limb, and just the reciprocating amplitude of processing head changes on request.

Adjusting device includes, the eccentric surface of endless member periphery on the pivoted arm spare, and perhaps in these endless members is equipped with the parts of motion pivotally, and reciprocating apparatus can work to these parts.In this case, adjusting device includes first plate-shaped member, and it is installed on the framework of endless member, is adjustable, so that the qualification plate-shaped member, be parallel to first parts and be installed on motion on the direction of second axis of gimbal in the framework.In the adjusting device, also comprise a roller that is installed in first plate-shaped member, it is pressed in two endless members, or on the eccentric surface of one of them.Like this, when answering the rotation of ring-shaped article and pivoted arm spare, plate-shaped member then is conditioned in the opposite direction.Reciprocating apparatus is installed on second plate-like piece, and this plate-like piece is parallel with first plate-like piece basically preferably.Regulate first plate-shaped member by this way, just can realize, the adjusting of pivotally connected position (between two lever arms of reciprocating apparatus), and to an adjusting on its longitudinal direction in these lever arms.Consequently, clamping limb also comprises processing head, will change its reciprocating amplitude with the rotation of pivoted arm device.

If the equipment that uses the present invention to propose carries out coverlay processing in the built-up welding mode to bend pipe, processing head just can be used a soldering tip.The overlaying method of most convenient is to use the expendable wire electrode, by the wire electrode feedway to the soldering tip wire feed.Yet this equipment also can be used for the weldering of powder material, at this moment, supplies with alloy powder by a powder feeding device to soldering tip.Powder is melted by wire electrode, and forms the satisfactory overlay of one deck.

The wire electrode that is used to weld will be by the whole length of clamping limb, and reach the soldering tip place.For this purpose, a welding wire feeder can be installed on clamping limb, for example be installed in the other end on the clamping limb that soldering tip one end is installed.The welding wire feeder can adopt general pattern, by near wire reel (be contained on the feeder or) welding wire is delivered to welding wire feeder place.From then on feeder place, welding wire is sent to the soldering tip place by a conduit along the clamping limb device.Preferably, make the welding wire that passes conduit pass a curved conductor again, this pipe can change welding wire along being parallel to the direction that clamping limb vertically moves, and makes and moves along the direction that is arranged essentially parallel to processing plane.This curved conductor is one section bend pipe or curved channel preferably, as adopts curved channel, and some rollers can be installed on it, so that welding wire moves along the camber of channel.

If carry out powder material when weldering, can adopt a powders into device so that alloy powder moves along the total length of clamping limb.Preferably the powders into device is installed on the clamping limb, install soldering tip the other end at one end.By the hopper place material is delivered to powders into device place, this hopper also can be installed on the other end of clamping limb, or the vicinity.A kind of very simple device is, powder delivered in the feed pipe of feeder, again along the feed pipe that is installed on the clamping limb, material delivered near the powder measuring device that is installed on the soldering tip.Comprise a feed space in the pay-off, material is sent to outside hopper this feed space, and a plunger is arranged in this feed space, can in turn powder be pushed in the feed pipe, and it is flowed away along this pipe.Feed space can be a sleeve, a plunger is arranged in interior, and concentric with it.Discontinuously the charging aperture place of this sleeve to feed pipe advanced by a cam.One returning spring can make the sleeve homing, so that advance next time.Powder measuring device can be general form, by feed pipe material is sent in the metering device, powder is delivered near the wire electrode that stretches out in outside the soldering tip again.

In another kind of device, an alloy powder hopper and a metering device are installed on the clamping limb, and the other end of soldering tip one end is installed.By metering device powder is sent in the conduit consistently, or is sent to one very thinly, on the jointless moving belt, this band is through clamping limb total length, and powder delivered to the wire electrode vicinity of stretching out from soldering tip above it.

In another device, alloy powder can be used as core material, is enclosed in to make in the hollow wire electrode.In this device, the hollow pipe on the need selection welding wire unit length is to the weight ratio of core material, and the composition of hollow pipe and core material, so that determine the weld metal of suitable composition, and obtains satisfactory coating material.Very clear, concerning with the device of powder measuring device feed, also there are the problems referred to above.But in this case, as required, can change the composition of scolder by metering device.

For the present invention is described better, now in conjunction with the accompanying drawings.

Figure 1 shows that bend pipe is fixed and the perspective view of rotatable parts assembly;

Figure 1A is depicted as the plane of component assembly shown in Figure 1;

Fig. 2 and Fig. 2 A and Fig. 1 and Figure 1A are corresponding, just the drive unit difference;

Figure 3 shows that side view, part is a sectional drawing, and the right side of component assembly illustrated in figures 1 and 2 is a gripper arm parts assembly;

Fig. 3 A is depicted as the perspective view of component assembly shown in Figure 3;

Figure 4 and 5 are depicted as the another kind of framework on the component assembly shown in Figure 3 and the enlarged drawing of york piece;

Figure 6 shows that the axial view of framework shown in Figure 5;

Figure 7 shows that the perspective view of york piece shown in Figure 5;

Figure 8 shows that the perspective view of gimbal shown in Figure 5;

Figure 9 shows that vibrating mass, be used to vibrate clamping limb;

Fig. 9 A is depicted as the sectional drawing of being got from the IX a-of Fig. 9 IX a line;

Figure 10 shows that the perspective view of parts shown in Figure 9;

Figure 11 to 13 at length shows each part of vibrating mass shown in Figure 9;

Figure 14 and 15 respectively shows the side and the axial view of metal dust feedway;

Figure 16 shows the another kind structure of certain part shown in Figure 14;

Figure 17 and 18 shows the plane and the side view of a powder feed apparatus respectively.

Accompanying drawing shows each component assembly in one embodiment of the present of invention and each part of equipment.This equipment is mainly used in overlaying method bend pipe coverlay, it is evident that, this equipment also is suitable for other class workpieces are carried out coverlay and processing.

Fig. 1 and 1A are depicted as the fixing and rotatable parts assembly 10 of bend pipe of a bend pipe process equipment.It includes a drive system and an adjustable output motor 12 and a bogie 14.Bogie 14 is driven by motor 12, around the X-axis line rotation of a main level.Bend pipe bearing support 16 triangular in shape is installed on the bogie 14, and some cushion blocks 18 are arranged above it, and bend pipe 20 can be fixed on these cushion blocks by the pressing plate (not shown).Entire equipment is designed to, be fixed to bend pipe 20 on the cushion block 18 after, of bend pipe 20 is positioned at that the footpath makes progress, selected circular cross-section promptly is positioned on the processing plane vertical with X-axis, and the center of circle that makes this radial section is on this axis.Like this, when support 14,16 rotated under the effect of motor 12, bend pipe 20 can rotate around the X-axis line, and can make selected processing cross section still keep above-mentioned orientation relationship.

One support plate 11 is outstanding from the support 14, and it has an axle journal 13.The axis of the axle journal 13 on the support plate 11 is concentric with X-axis basically.Support plate 11 and axle journal 13 can rotate with support 14, and their effect will illustrate below.

Fig. 2 is different with the structure shown in Fig. 1 and the 1A with the equipment shown in Fig. 2 A, but is identical in operation, the identical identical part of label representative.Yet in Fig. 2 and 2A example illustrated, variable speed electric motors, particularly 12 is installed near the circular slab 15 on the support 14, and it is by tooth 19 interlocks on an output gear assembly 17(and circular slab 15 circumference), support 14 is rotated around the X-axis line.Also have, roller 21 is used for the annular element 23 of supporting bracket 14, so that it is easy to rotate.To the following explanation that Fig. 1 and 1A did, the equipment with different structure shown in Fig. 2 and the 2A is suitable for too.

The position of soldering tip 22 is on processing plane.Soldering tip 22 is vertical all the time, so that when bend pipe 20 rotates, metal is soldered on the bottom surface of bend pipe 20 working positions, and forms an annular welding zone at this position.In order to make soldering tip 22 keep vertical, it can be installed in an end of clamping limb 23, and can swing.Clamping limb is on the song, the quadric chain that underarm 24,26 constitutes, and its length can extend into an end of bend pipe 20.The outer end of

arm

24,26 is connected (pivotally) with tumbler, will be described below.

Bearing support 16 is installed on the support 14, and it can be around pin 28 swings.The axis of pin 28 is vertical with the X-axis line, but non-intersect, partially in a side.This pin axis also is the center of curvature of bend pipe 20.Like this, after the welding zone on having welded bend pipe 20 on the selected cross section, bearing support 16 promptly turns over, so that to another adjacent radial cross section of bend pipe on the processing plane 20, process.This process can proceed to, and with half length at least of bend pipe 20, after having applied with weld metal in pipe, makes bend pipe change direction, so that the length of remainder is applied processing.

For making support 16 swing, roller 25 is installed on it, it can roll on 14 on support.On the circular arc periphery of support 16, many teeth 27 or a chain are arranged.One motor 29 is installed below the support 14, and this motor drives a sprocket wheel 31 by a reducing gear (not shown), this sprocket wheel and chain or tooth 27 engagements.Sprocket wheel 31 is fixed on the axle 35, and this axle passes support 14.When motor 12 makes after support 14 turns over a circle, motor 29 can make bearing support 16 with step-by-step system swing, perhaps makes in support 14 rotating process at motor 12, and motor 29 is swung bearing support 16 continuously.The swing of bearing support 16 can make soldering tip 22 weld out the ring-type bead welding respectively, perhaps continuous helical form bead welding.Yet under these two kinds of situations, at least a portion surface of bend pipe 20 total inner surface, the weld metal majority is to have formed continuous cover layer.

Fig. 3 shows the clamping limb rotatable parts assembly 30 of bend pipe process equipment.As shown in Figures 2 and 3,

arm

24,26 is stretched over component assembly 30 from component assembly 10, and to the X-axis line very little angle that tilts, for example about 20 °.Shown in Fig. 3 and 3A, component assembly 30 comprises a tumbler, and the external end head of its

clamping limb

24,26 pivotally connects.One sleeve shaft 32 is arranged in the tumbler, can rotate around the X-axis line by it, a pair of radially pivoted

arm spare

34,36 is welded on the tube axle 32.Component assembly 30 is fixed on the support 14 by tube axle 32, and sleeve shaft 32 is fixed on the axle journal 13.Component assembly 30 can rotate around sleeve shaft 32 with support 14, because fix the flange 39 and the pivoted arm spare 34 of axle journal 13 with bolt 37.In Fig. 3, each represents with solid line and dotted line, sees clearly for being easy at support 14(, does not draw) and after bend pipe 20 turns over 180 °, the situation of each parts.

One

support plate

38,39 is respectively arranged on the pivoted arm spare 34,36.Respectively there is ring-

type position

40,41, their axis and an X-axis line parallel outer end of support plate 38,39.Ring-type position 40 on the pivoted arm spare 34, near than the ring-type position on the pivoted arm spare 36 41 from the distance of component assembly 10, its axis is also near from the X-axis line.In the ring-

type position

40,41, a framework 42 is arranged, as shown in Figure 4, also have a rectangle york piece assembly 44, wherein the clamping limb of fixing on gimbal 49 and bearing pin 46 24,26 can be swung.Roller 45 on the framework 42, can make the

ring

40,41 with its centre framework 42 between, produce relative rotation.

Total mode of operation of component assembly 30 is such, and when it and

support

14,16 rotated synchronously, clamping

limb

24,26 was on the one hand by a tapered basically track, around the rotation of X-axis line, and rotation in

ring

40,41 on the other hand.Like this, when encircling 40,41 when the framework 42 that changes it rotates, clamping

limb

24,26 still can keep the relative position between them constant basically, even clamping limb 24 is positioned at the top.Because this situation, by clamping

limb

24,26, with four connecting rods that connector constituted that they and soldering tip pivotally couple together, the position that can make these parts is to remaining unchanged basically.

Fig. 5 shows the partial view of the more excellent design of framework 42 and york piece assembly 44.The structure of parts shown in Figure 5 with shown in Figure 4 be identical, but say something in order to be easy to, wherein roller 45 is not illustrated.Also have, should be noted that, the Lower Half of framework shown in Figure 5 and york piece assembly with its first half that draws in detail, is symmetrical basically.For clarity sake, Fig. 6 to 8 shows several parts of parts shown in Figure 5.

As shown in Figure 7, a york piece 47 is arranged in the york piece assembly 44, general rectangular and four angles of inclination are arranged.One tubular piece 47a is arranged on the york piece 47, and a limit of it and york piece is as a whole.Also have, the last york piece 47 of pivoted arm spare 36 is different with the york piece on the pivoted arm 34, because an outwardly directed rod member 47b is arranged on its side, this side is relative with tubular piece 47a.Framework 42 has a cavity, and its total shape is similar to york piece 47, and a side has a recess 42a, is used to place tubular piece 47a.One pivot 42b is installed in recess 42a, and it passes the bearing among the recess 47a, like this, york piece 47 just can rotate around Y-axis, and this axis is vertical with the X-axis line, but is positioned at a side, so just, can make the opposite frame of tubular piece 47a, put into or show with respect to plane, framework 42 place.

One gimbal 49 is installed in york piece 47, is illustrated in figure 8 as side's frame section.At the two ends of gimbal 49 a trunnion 49a is arranged respectively, they are installed among the bearing 49b of york piece 47 support holes 47c, and like this, gimbal 49 can be put into or show around z axis with respect to plane, york piece 47 place.Z axis is parallel with the pivotal axis Y of york piece 47.Z axis generally passes the X-axis line more.

Welding head

holder gripping arm

24,26 shown in Figure 5 is passed universal joint 49, is fixed in the universal joint 49 with pin 46, and can swings, and this situation is same as shown in Figure 4.The axis of pin 46 is vertical with universal joint 49 Y, z axis separately with framework 47 basically, basically also perpendicular to the X-axis line.

Roller 45 can make framework 42 and its york piece assembly 44, at the relative position that keeps on all directions between them, shown in Figure 4 and 5.Pin 46 can make clamping

limb

24,26, with respect to gimbal 49 swing, thereby when component assembly 30 when the X-axis line rotates, the movement locus of clamping limb is a rotating cone.Yet, since york piece 47 have can be around the moving free degree of Y-axis string pendulum, gimbal 49 has the free degree of changeing z axis, thereby clamping

limb

24,26 can longitudinally vibrate, and correspondingly makes soldering tip 22 vibrations.

The framework 42 of installation in the ring-type position 40 of pivoted arm spare 34 and the main feature of york piece assembly 44 are illustrated above.The ring-type position 41 of pivoted arm 36 also has same characteristics.But the ring-type position 41 of pivoted arm 36 also is equipped with some parts of vibrating device 36a, is used to make clamping

limb

24,26 and soldering tip 22 to produce vibration.

Fig. 9,9A and 10 show vibrating device 36a, and Figure 11～13 show its some parts.Vibrating device 36a is installed in the endless member 41 of pivoted arm spare 36 mostly, on the surface of framework 42 and york piece 44.Pivoted arm spare 36 is positioned at a side of pivoted arm spare 34, as shown in Figure 3.Vibrating device 36a comprises a vibrator fixed head 50, adjusts ring 51, a vibrator assembly 52 and a vibration regulating device 53.Fixed head 50 and ring 51 respectively have an interstitial hole 50a, 51a, and its shape can allow york piece 47 and gimbal 49 to swing therein.Spiral 51c is fixed to plate 50 on the framework 42, and this bolt passes the hole 50b on the plate 50, screws among the threaded hole 42c of framework 42.The position of ring 51 between framework 42 and plate 50, the outline line of its mesopore terminate in the outside of the bolt that plate 50 is fixed.Be screwed into the bolt (not shown) of ring 51 threaded hole 51b, passed the groove 50c of plate 50, like this, ring 51 with respect to plate 50, can be done limited moving in pivotal axis Y, Z direction.

Pass ring 51 hole 51d with the bolt (not shown), be screwed among the threaded hole 54c of pivot support frame 54 base plate 54a, just pivot support frame 54(can be seen Figure 11) be fixed on the ring 51.After fixing, the support plate 54b of pivot support frame 54 promptly passes the slotted eye 50d of plate 50, like this, can make the fixing hole 54e of pivot support frame 54 be positioned at a side with the plate 50 of ring 51 apart from each others.The gap of support plate 54b and groove 50d can make ring 51 move with respect to plate 50.

Vibrator assembly 52 is fixed on and encircles on the surface of fixed head 50 of 51 apart from each others, and it comprises a circular cam plate 55, the system of bars that has a cam rail 55a and to be made up of rod member 56,57,58 in the middle of its.Rod member 56 is connected on the support 59 of plate 50, and it just can be fixed as axis 56a swing around one like this.Middle part in its two termination is equipped with bolt 59, and its screw rod is cam-follower, and is inserted among the guide groove 55a.When motor 60 drive plates 55 rotate, rod member 56 from an axis 56a end far away, will with respect to plate 50 do repeatedly near and away from action.On first lever arm 57a of rod member 57 a groove 57c is arranged, the screw portion of bolt 61 is from wherein passing.This is bolted to the far-end of rod member 56.Second lever arm 57b of rod member 57 is parallel with lever arm 57a, but draws back certain distance to each other.Rod member 62 couples together lever arm 57a and 57b, and this rod member passes on the sleeve 63 that is fixed on the fixed head 50.The end of lever arm 57b away from rod member 62, pivotally installing at its axis of bolt 64(is 57d) on, bolt 64 couples together an end of second rod member 58 and rod member 62 ends that are clipped between them.The other end of rod member 58 by a universal joint 65, is connected on the overhanging rod member 47b of york piece 47.Position between two ends of rod member 58, rod member 58 passes slotted eye 58b separately and hole 54c on two rod members 58 by bolt 66() couple together with the support plate 54b of pivot support frame 54, like this, rod member 58 is swung around the 58a axis.

Axis 56a, 57d are parallel with 58a each other, and be also parallel with the axis of rod member 62.These axis are vertical with adjusting ring 51 with respect to plate 50 transportable directions.This direction is parallel with the direction of axis Y, the Z of york piece and gimbal 49.The operating process of this device is such, when lobe plate 55 rotates, will make rod member 56 swings, thereby correspondingly make lever arm 57a, and the lever arm 57b of rod member 57, the axis swing of distaff part 62, and rod member 58 is swung around axis

58a.Rod member

56,57 and 58 is swung repeatedly, thereby causes york piece 47 around axis Y, and gimbal 49 is done the oscillatory type swing, causes that thus welding head

holder gripping arm

24,26 and soldering tip 22 are along its vertically vibration repeatedly.

Include the circumferential surface 41a at the ring-type position 41 on the component assembly 30 pivoted arm spares 36 in the vibration regulator 53, this surface is eccentric with the inner surface of this ring, and roller 45 rotates on inner surface.Also comprise roller 67 in the device 53, this roller is fixed on to be adjusted on the ring 51, and is pressed on the eccentric face at ring-type position 41.When component assembly 30 rotates, encircle 41 promptly around the X-axis line, and rotate with respect to its framework 42 and york piece assembly 44.Yet, fixed head 50 and adjust ring 51 and fix, and and framework 42 between can not produce relative rotation, the eccentric surface 41a of roller 67 superjacent rings 41 rotates.Because this surface is eccentric, thereby when ring 40 rotates, adjusts ring 51 and be about between the extreme position that slotted eye 50c and 50d by fixed head 50 limit, produce vibration.The vibration of ring 51 will make pivot support frame 54 produce vibration in groove 50d, thereby make effective mechanical system of pivotal axis 58a and rod member 58 produce vibration.The long and is, welding head

holder gripping arm

24,26, and therefore the Oscillation Amplitude of related soldering tip itself is stepping.

Before address, when clamping

limb

24,26 during by a taper orbiting motion, clamping limb orientation relationship to each other still remains unchanged.Also address, when

ring

40,41 when the X-axis line rotates, will produce relative rotation between they and their framework 42 in interior and the swing component assembly.Thereby, need design some limiting mechanisms, with maintain aforesaid position to relation of constant and in relative rotation the pass be.Fig. 3 shows a kind of design easily, in the side away from vibrating device 36a of framework, on the framework of component assembly 30 cursors 36, installs with one heart on the band gear 36.In this scheme, chain 36c walks around wheel 36b and another same toothed wheel 36d, and this is taken turns is fixed, and axis overlaps with the X-axis line, framework is not rotated, thereby can make between the clamping

limb

24,26 holding position to constant (even one is positioned on another).In this case, framework only rotates around this fast pulley, but does not rotate around axis own.Be readily appreciated that the other design also is feasible.

Figure 14 and 15 at length shows, and sends the device of scolder to machined surface.Used scolder is wire electrode 68 and the alloyed powder that confession consumes in this device, and the two is by clamping

limb

24,26, sends to from hopper separately.

Wire electrode is along conduit 69, sends to by conduit 70 again.Conduit 70 is curve shapes, wire electrode can be sent between the tension roller 71.As shown in figure 16, the section of conduit 70 is V-shaped, and a series of pairs of rollers 72,74 are housed, and they can make wire electrode flow through conduit 70.Yet in another design of conduit 70, it only is simple one section curve pipe, and wire electrode passes through this pipe, and by its tension.

Passed through the wire electrode 68 of roller 71, passed the clamper 76 that is installed on the clamping limb 76 again, tip seat 78 and tip 80.The inner surface of the bottom face of tip 80 and bend pipe 20 has a segment distance, so that a segment electrode silk can be stretched.

Alloy powder is by conduit 82(Figure 17) enter into feeder 84 places of powder measuring device 86.The latter for example, can be that general rotation type De ， And is driven by a flexible drive device (not shown).With the powder that measures.By managing 88, deliver to tip seat 78 places from installing 86, send through discharging opening again near tip 80.

In the end of leaving soldering tip 22 clamping

limb

24,26 far away, a powder feed device 90 and a speed-changing driving device 92 are installed.Figure 17 and 18 schematically shows device 90.One speed change wire electrode feeder (not shown) also is installed, and it can any structure easily, and it passes clamping limb 24 along conduit 69(with wire electrode 68), deliver in the conduit 70.Powder pay-off 90 is delivered to metering device 86 places with powder along conduit 82, and conduit 82 passes clamping limb 24 too.At the feed inlet end of conduit 82, device 90 has a sleeve 94, and it can be under the effect of cam 96 and returning spring 97, and the port of conduit 82 is moved reciprocatingly.When sleeve 94 when position shown in Figure 17 is pushed to left, powder can flow among the sleeve 94 from hopper through feed pipe 98.When sleeve under the effect of spring 97, turn back to as quick as thought when right-hand, powder promptly waits behind, this part is because inertia, part is because fixing plunger 99 has played barrier effect.Sleeve 94 can be with respect to plunger 99 motions.

At last, being appreciated that can be to the design of aforesaid structure and part, proposes change, modification and (or) add, but do not depart from spirit of the present invention or category.

Claims

1, be used for the inner surface of swan-neck and swan neck (calling bend pipe in the following text) is applied the equipment of processing, it comprises a bearing support, make the drive unit of bearing support around main shaft rotation, the fixture that bend pipe might be located on it on the bearing support, so just, can make a section in the radial direction of bend pipe, substantially overlap with the processing plane of described axis normal, when support during around the rotation of described axis, the center of circle of described section also basically with described dead in line, also comprise a processing head, so it is positioned on the processing plane close described axis, and can be to the described lip-deep annulus around the described radial direction section, apply processing, at this moment, described support and be fixed in a bend pipe above it, under the effect of described drive unit, rotate, so just can make described annulus pass through processing head.

2,1 equipment that proposes as requested, wherein said fixture is a cushion block, described bend pipe can be fixed in the above.

3, as requested 1 or require 2 equipment that propose, described supporting arrangement wherein, its position is adjustable with respect to described bearing support, so just, each adjacent successively section in the radial direction of described bend pipe can be positioned on the described processing plane, and make each adjacent successively section center of circle basically with described dead in line.

4,3 equipment that propose as requested, wherein said fixture is a cushion block, and it is installed on the described bearing support, and its position can be regulated by the mode of swinging around a pivot, and the axis of this pivot is vertical with main shaft, but does not overlap, partially in a side.

5,4 equipment that propose as requested, wherein said cushion block is suitable for a bend pipe is fixed on the described bearing support, this bend pipe has certain radius of curvature, described pivotal axis departs from a distance to described main shaft, this distance equals known radius of curvature substantially, described monoblock can be fixed on described bend pipe above it very rightly, and the center of curvature of described bend pipe is overlapped with described pivotal axis.

6,4 or 5 equipment that propose as requested, wherein said monoblock can be around described pivotal axis, swing with respect to described bearing support, when described bearing support when described main shaft whenever rotates a circle, then indexing means promptly moves, thereby next section in the radial direction of described bend pipe is positioned on the described processing plane.

7,4 or 5 equipment that propose as requested, wherein said cushion block can be around described pivotal axis, with respect to described supporting swing, when described bearing support after described main shaft turns over a week, adjusting device is promptly moved, and cushion block is swung continuously, thus make the section in the radial direction of described bend pipe, in turn be positioned on the described processing plane.

8, the equipment of any proposition in 1 to 7 as requested, wherein said processing head is installed in an end of clamping limb, described clamping limb tilts to described main shaft, described processing head is positioned on the described processing plane, and pass a port that is fixed on bend pipe on the described fixture, described clamping limb has a supporting position at least, this position is away from an end of itself, drive described clamping limb around described main shaft by the pivoted arm device, rotate synchronously with described bearing support, like this, described clamping limb just marks a rotary conic, and described processing head is positioned at vertex of a cone place.

9,8 equipment that propose as requested, wherein said clamping limb comprises a pair of rod member, with many connectors, pivotably they are connected into a quadric chain, like this, when clamping limb when the taper orbiting motion, then processing head still can keep fixing basically position to.

10,8 or 9 equipment that propose as requested, wherein said pivoted arm device comprises a support arm at least, this support arm is fixed on its end, and radially stretch, can be with described bearing support synchronously around described main shaft rotation, described clamping limb pivotally is installed in the other end of described support arm, like this, when described support arm rotates, can mark a rotary conic track.

11,10 equipment that propose as requested wherein have the support arm of pair of parallel, and they all are fixed on the tubular axle, and this axle is fixed on the described bearing support, and rotates with it.

12,10 or 11 equipment that propose as requested, wherein has a support arm at least, end at it has an annular element, the described main shaft of the axis runout of described annular element, one pivot device is installed in the annular element, by this device, clamping limb just is installed on the described support arm, and action pivotally, comprise in the described pivot device that one is installed in the framework in the described annular element, therefore, this framework and annular element can be realized relatively rotating, a connection piece is arranged in framework, by this connector clamping limb is installed on the framework, clamping limb can be around an adjustment axis swing perpendicular to described annular element axis.

13, the equipment of any proposition in 1 to 12 as requested, comprising a reciprocating apparatus, it can make described processing head, moves back and forth along the direction that is parallel to main shaft, thereby has increased the width of described annulus, and processing head applies processing in this way.

14,12 equipment that propose as requested, comprising a reciprocating apparatus, it can make described processing head, move back and forth along the direction that is parallel to main shaft, thereby increased the width of described annulus, processing head applies processing in this way, described connector comprises a york piece that is installed in the described framework, and this york piece can be swung with respect to framework around first axis, one gimbal is installed in described york piece, this gimbal can be around second axis, with respect to described york piece swing, described first be parallel substantially with second axis, and be basically parallel in the plane of described annular element one, each other at a distance of a distance, they and two described adjustment axis and described annular element axis at right angles concern substantially, like this, clamping limb can longitudinally move back and forth, thereby described processing head is moved back and forth, and this motion is formed by described reciprocator, this mechanism makes york piece around described first axis swing, and gimbal is swung around second axis.

15,14 equipment that propose as requested, comprise a rotating cam member in the wherein said reciprocator, one cam-follower, the latter and cam member interlock, and under the effect of cam member, produce an oscillation trajectory, make cam-follower and york piece interlock by a rod member mechanism, the vibration of cam-follower will cause the swing vibration of york piece around described first axis, will cause the swing vibration of gimbal around described second axis simultaneously.

16,15 equipment that propose as requested, reciprocator wherein is installed in two panel-like members first, two panel-like members are installed on the described framework, a roller is arranged on second in the described panel-like member, this roller is pressed on the off-centre operation perimeter surface of described annular element, like this, when it's a week is past the annular element revolution, to second panel-like member be parallel on the direction of annular element, and with respect to first panel-like member motion, promptly finish a vibration cycles, on second panel-like member a projection piece is arranged, this projection piece can constitute a pivot to a rod member in the rod member mechanism, because described protrusion moves together in company with second panel-like member, thereby cause the variation of Oscillation Amplitude, oscillating movement will be passed to clamping limb and processing head.

17, the equipment of any proposition in 1 to 16 as requested when described processing head is a soldering tip, also includes the welding wire feedway in the then described equipment, in order to welding wire is delivered to described soldering tip place.

18, the equipment of any proposition in 8 to 12 as requested, wherein said processing head is a soldering tip, also include the welding wire feedway in the then described equipment, in order to welding wire is delivered to described soldering tip place, described feedway is installed in away from described soldering tip place, it has a wire leading pipe along described clamping limb stretching, extension, and by this pipe, welding wire can be sent to described soldering tip place from feedway.

19,17 equipment that propose as requested also comprise powder feeding device, and it can be delivered to alloy powder near described soldering tip place, so that the inner surface of bend pipe is carried out powder fusion.

20,18 equipment that propose as requested, also comprise powder feeding device, it can be delivered to alloy powder near described soldering tip place, so that the inner surface of bend pipe is carried out powder fusion, described powder feeding device is installed in away from described soldering tip place, it has a conduit along described clamping limb stretching, extension, under the effect of a powders into device, and under the control of a powder measuring device, alloy powder can be from described feedway, by conduit, be sent to described position.

21, a kind of processing method that the inner surface of swan-neck and swan neck (calling bend pipe in the following text) is applied, one bend pipe is positioned on the fixture of a bearing support, this bearing support can rotate around a main shaft, bend pipe is to locate like this, it is its section in the radial direction, be located substantially on the processing plane perpendicular to described axis, also have, when support during around the rotation of described axis, the center of circle of this section overlaps with described axis basically, one processing head is positioned on the described processing plane, near described axis, when described support and the bend pipe that is installed in above it, when under the effect of drive unit, rotating, processing head just can be processed the described surperficial annulus of described radial direction section, makes described annulus pass through processing head simultaneously.

22,21 coating processing methods that propose as requested, wherein said supporting arrangement is adjustable to described bearing support, thereby the section on the direction of adjacent radial successively of described bend pipe all is positioned on the described processing plane, and their center of circle all overlap basically with described axis.

23,22 coating processing methods that propose as requested, described fixture wherein is a cushion block, it is fixed on the described bearing support, and be that the position is adjustable to described bearing support, it can be around pivotal axis swing, and this axis and main shaft meet at right angles, but depart from main shaft, be positioned at its day side.

24,23 coating processing methods that propose as requested, wherein said cushion block is that the position is adjustable to described bearing support, it can be around a described pivotal axis swing, distance of the described main shaft of this axis runout, this distance equals the radius of curvature of described bend pipe substantially, described bend pipe is to be positioned like this on the described cushion block, though the center of curvature of described bend pipe, basically with the overlapping of described pivotal axis.

25,23 or 24 processing methods that propose as requested, described cushion block is can be around described pivotal axis, when described bearing support is spent when circle around described main shaft revolution, swing with respect to described bearing support by scale division value, so that next section in the radial direction of described bend pipe is positioned on the described processing plane.

26,23 or 24 processing methods that propose as requested, described cushion block can be around described pivotal axis, when described bearing support is spent when circle around described main shaft revolution, under the effect of adjusting device, swing, this moment, described cushion block was swung by the continuous motion mode, and the section in the radial direction of described like this bend pipe is to be positioned on the processing plane continuously successively.

27, the processing method of any proposition in 21 to 26 as requested, described processing head is installed in one has an end of the clamping limb of gradient with described main shaft, described processing head is by penetrating described clamping limb the method for described bend pipe one port, be positioned on the described processing plane, the supporting position of described clamping limb has one at least, this position is away from the one end, when described bearing support rotates, described clamping limb will synchronously be rotated around main shaft, like this, described clamping limb will mark a rotary conic track, and vertex of a cone place is described processing head installation place.

28,27 processing methods that propose as requested, described clamping limb comprises a pair of lever arm, by many connectors they are pivotally connected into a quadric chain, when described processing head was pressed the taper orbiting motion at clamping limb, the position of described processing head was to keeping constant basically.

29, the processing method of any one proposition in 21 to 28 as requested, the reciprocating action on the direction substantially parallel of wherein said processing head with described main shaft, to increase the width of described annulus, processing head applies processing in this way.

30,27 or 28 processing methods that propose as requested, the reciprocating action on the direction substantially parallel of described processing head with described main shaft, to increase the width of described annulus, processing head applies processing in this way, make described processing head produce reciprocating action by a reciprocating apparatus, this reciprocating apparatus is to the connector generation effect of clamping limb, thereby makes described clamping limb longitudinally produce reciprocating action.

31,29 processing methods that propose as requested, in the process that bearing support rotates a circle, the action of described reciprocating apparatus changes, and like this, the Oscillation Amplitude that passes to clamping limb and processing head also changes.

32, the processing method of any proposition in 21 to 31 as requested, described processing head is a soldering tip, welding wire will be sent to described soldering tip place from feedway.

33,32 processing methods that propose as requested, alloy powder will be sent to a position near described soldering tip, so that the inner surface of described bend pipe is carried out powder fusion from powder feeding device.