CN110523867A - A kind of outer tang processing method of metal tube - Google Patents
A kind of outer tang processing method of metal tube Download PDFInfo
- Publication number
- CN110523867A CN110523867A CN201910819389.5A CN201910819389A CN110523867A CN 110523867 A CN110523867 A CN 110523867A CN 201910819389 A CN201910819389 A CN 201910819389A CN 110523867 A CN110523867 A CN 110523867A
- Authority
- CN
- China
- Prior art keywords
- metal tube
- extrusion
- outer tang
- workpiece
- necking
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
Abstract
The present invention provides tang processing methods outside a kind of metal tube, comprising the following steps: metal tube end is processed into inner recess using necking die by the first step；Second step will be processed into the metal tube of inner recess, then carry out spinning to metal tube end by extrusion die in the first step, the direction of extrusion of extrusion die and the longitudinal profile of metal tube are in 30-120 ° of angle, and processing forms outer tang.The present invention processes workpiece end, and end is made to form inner recess in homogeneous thickness and outer tang, the structural strength convenient for improving workpiece and its bonding strength between connector, while convenient for improving the leakproofness of junction；Simultaneously can both ends to workpiece carry out consistent processing simultaneously, workpiece is detected and corrected before processing, workpiece can rotate on the same axis always, while synchronize to work pieces process end rotary squeezing, it ensure that the uniformity of workpiece end thickness, convenient for the raising of Workpiece Machining Accuracy and processing efficiency.
Description
Technical field
The present invention relates to tubular object extruding field, the outer tang processing method of especially a kind of metal tube.
Background technique
It is more and more to the needs of components with the development of science and technology, while the requirement to components is also higher and higher, gold
The processing and fabricating requirement for belonging to pipe is also higher and higher, and the mode of processing is also varied, and Patent No. CN107035369A is disclosed
Diameter reducing working method and the application of a kind of gas expansion device and metal tube, expansion device include metal tube and inflation igniter head,
Metal tube one end reducing sealed, other end necking are equipped with inflation igniter head；Diameter reducing working method is to first pass through fixture to fix gold
Belong to pipe, then by fixture rotating metallic pipe and heating metal pipe end, metal tube end is heated to be close to or up to plasticity change
After shape, after necking die front contact to metal tube end, metal tube end is rearwardly moved from necking die front, reducing die
Tool carries out compression and thickening molding to metal tube end, and necking end thickens axially outward, then with through-hole knife to metal tube end into
Row through-hole constant aperture.To improve bonding strength between metal tube and joint outer part and sealing effect and junction
Structural strength is needed to carry out metal tube the connecting pin that processing is formed with outer tang, but can not be reached using traditional processing method
To the demand of processing, it is easy to appear that gas leakage, to fly head, miso-fire hidden danger, transport dangerous etc., such as:
CN101531058A discloses a kind of plastic tube pointing machine, it includes the cabinet with exhaust outlet, is provided with heat source in cabinet,
The Tooling Warehouse for being located in the box body and capable of accommodating mold is provided on cabinet.The necking machine to workpiece heat after effect on environment compared with
Greatly.
CN106270233A discloses a kind of steel pipe throat machine, including pedestal, and one end of base upper surface is equipped with hydraulic cylinder,
The side of hydraulic cylinder is equipped with hydraulic telescopic rod, and one end of hydraulic telescopic rod is fixedly connected with the side of motor, the front of motor with
The back side is equipped with movable axis, and the upper surface of pedestal offers race, and race inside lap has runner, and runner is run through in one end of movable axis
Axle center at, the port of shaft one end of motor offers circular groove, and the other end of base upper surface is overlapped with the first extruding respectively
Block and the second crushing block.The steel pipe throat machine, by making pedestal have enough skies the first crushing block and the second crushing block opening
Between steel pipe is inserted into circular groove, so that one end of steel pipe is put in the first half slot and second by opening hydraulic telescopic rod and motor
In the necking slot that half slot is formed, since the diameter of necking slot import is bigger than the diameter of outlet, to put in necking according to steel pipe
Depth in slot adjusts the size of steel pipe throat.There are work pieces process end unbalance stress in the steel pipe throat machine use process
It is even, it is easy to keep necking end pipe thickness portion uniform, influences the quality of workpiece.
CN106238598B discloses a kind of two-headed steel tube necking equipment, stores up including base, the steel pipe being mounted on base
Material portion, the cutting agency of outlet that steel pipe storage department is arranged in, the steel pipe clamping conveyer being arranged in above base, setting exist
Steel pipe clamps the sliding reducing device and discharging slideway of conveyer two sides, clamps conveyer by steel pipe and clamps steel pipe
It on to necking station and compresses, the steel pipe throat machine of two sides is moved to necking station by corresponding first pusher cylinder, makes steel
Double-ended necking is carried out in the necking hole of the steel pipe throat machine of pipe both ends insertion two sides, after the completion of necking, the first pusher cylinder is driven
Steel pipe throat machine retracts original position, and steel pipe clamps conveyer and the steel pipe after necking is transported on discharging slideway.The two-headed steel tube
Necking equipment needs replacing the processing end of workpiece in process, cannot achieve to the consistent processing simultaneously of workpiece both ends.
Traditional processing method in summary, the mold extruding unbalanced machining accuracy of dynamics is poor, and workpiece end is caused to thicken
It is in uneven thickness, be unable to satisfy requirement, workpiece necking end is connect with joint outer part when use is easily broken off, and influences interconnecting piece
The sealing effect of position, while being unable to satisfy consistent to the processing at workpiece both ends.
Summary of the invention
The object of the present invention is to overcome the above-mentioned deficiency of the prior art, and provide a kind of thick convenient for workpiece metal tube end
Degree uniformly, convenient for connecting with joint outer part, improves its connection structure intensity and sealing effect, convenient for same to workpiece both ends simultaneously
Shi Jinhang is unanimously processed, in high precision with tang processing method outside efficient metal tube.
The technical scheme is that a kind of outer tang processing method of metal tube, comprising the following steps:
Metal tube end is processed into inner recess using necking die by the first step；
Second step will be processed into the metal tube of inner recess, then carry out spinning to metal tube end by extrusion die in the first step,
The direction of extrusion of extrusion die and the longitudinal profile of metal tube are in 30-120 ° of angle, and processing forms outer tang.
Preferably, the longitudinal profile of the direction of extrusion of extrusion die and metal tube is in 60-100 ° of angle.
Preferably, the longitudinal profile of the direction of extrusion of extrusion die and metal tube is in 80-95 ° of angle, and it is thick to be conducive to outer tang
Uniform effect is spent, bonding strength convenient for the promotion of evagination mouth structure intensity, and its between joint outer part and is connect close
Seal effect.
Further, the extrusion die vertically squeezes the longitudinal profile of metal tube in 90 °, and extruding dynamics is 0.5-
50 kilograms；The metal tube linear velocity is 2-30m/s.
Preferably, squeezing dynamics is 10-30 kilogram.
Preferably, squeezing dynamics is 20-25 kilogram；Prevent extruding force from spending the molding for being unfavorable for the outer tang of workpiece greatly,
Influence the structural strength of workpiece end；Extruding force is spent small, with the reduction of processing temperature, is unfavorable for the processing of the outer tang of workpiece
Efficiency and molding.
Preferably, metal tube linear velocity is 5-20m/s.
Preferably, metal tube linear velocity is 10-15m/s；When linear velocity is more than 30m/s, the rotation of metal tube
It is larger to turn inertia, be easy to cause end to tear when squeezing its end, when linear velocity is too low, influences pipe end
The thickness uniformity that portion's evagination mouth is formed.
Further, heat treatment before the metal tube end processing, heating temperature are that 700-1800 DEG C of cause softening plasticity becomes
Shape.
Preferably, heating temperature is 750-1000 DEG C.
Preferably, heating temperature is 800-900 DEG C；When temperature is greater than 1800 DEG C, workpiece end excessively softens, and is unfavorable for
The processing and molding of the outer tang of workpiece influence the workpiece end outer tang molding time, influence processing effect when the temperature is too low
Rate.
Further, the inner recess be processed as with necking die to rotated after heating metal tube end in-flanges, necking,
Through-hole is being carried out with the through-hole knife on necking die after in-flanges, necking, metal tube end inner recess completes the process.
Further, it is equipped with guide rail below the necking die, necking die is moved along guide rail, also set on guide rail for clamping
And the fixture of rotating metallic pipe, fixture are located at the centre or one end of necking die；Extrusion die is located at guide rail side.
Further, the both ends simultaneous processing of the metal tube is same to metal tube both ends at inner recess, then by extrusion die
When be processed into outer tang；According to the needs of processing, can the both ends to workpiece process simultaneously, while can guarantee workpiece two
The processing effect at end is consistent, the raising of precision and processing efficiency easy to process.
Further, the extrusion die includes the opposite extrusion and supporting element for being built in guide rail two sides, mobile extrusion die
The end of metal tube is placed between extrusion and supporting element by tool, and extrusion and supporting element are with opposite perpendicular to rail length direction
Power squeeze metal tube, the both ends of metal tube are processed to form outer tang.
Further, the extrusion die further includes first driving device and the second driving dress in first driving device
It sets, first driving device drives extrusion and supporting element edge to move toward one another perpendicular to rail length direction, the second driving device band
Dynamic extrusion and supporting element are moved along the rail length direction.
Further, the first driving device includes symmetrically arranged crossbeam, and crossbeam is connected by screw rod, and same along screw rod
Step is opposite or backwards to moving, and screw rod is equipped with forward screw thread and reverse thread, and under the driving of synchronous motor by gear or
Belt drives its rotation.
Preferably, screw rod is equipped with screw rod wheel or gear, and screw rod drives two end floor beams simultaneously by the driving of synchronous motor
It is opposite or mobile backwards.
Preferably, screw rod wheel is driven using belt, convenient for reducing the risk that screw rod clamping stagnation and screw rod fracture, while convenient for cross
The raising of beam the moving stability.
Further, second driving device includes the sliding seat connecting with crossbeam, and sliding seat is under the driving of driver
In moving on crossbeam, and the side of the upper end towards guide rail extends to form elongated end, and extrusion is installed on elongated end.
Preferably, extrusion is pressure roller, and supporting element is supporting block, and driver is hydraulic cylinder or cylinder, driver driving
Pressure roller moves on crossbeam, squeezes the workpiece end between pressure roller and supporting block, and workpiece end is gradually reduced, shape
At outer tang in homogeneous thickness.
The specific formation of outer tang, workpiece is mounted on fixture, is heated using end of the heating device to workpiece
To 700-1800 DEG C, so that workpiece end softening is reached plastic deformation or is heated to workpiece end obvious flare, rotates work
Part is carrying out inner recess processing to workpiece end using necking die, is completing the process backed off after random necking die, then use extrusion die
Have and outer tang processing is carried out to the workpiece end after processing inner recess；
When the processing temperature of workpiece is too low, the end of workpiece can be carried out again to be heated to plastic deformation；Starting first
Driving device, crossbeam are moved along guide rail to fixture direction, are in workpiece end between extrusion and supporting element, and starting second is driven
Dynamic device drives extrusion to perpendicular to guide rail direction movement, is uniformly squeezed workpiece end, and workpiece end starts zooming out,
Workpiece rotation while extruding when workpiece end is contracted to the size of setting, stops convenient for the uniformity of workpiece pressed end thickness
It squeezes, through-hole is being carried out to workpiece end using the through-hole knife on necking die, tapping, is being formed outside completion according to the needs of processing
The processing of tang.
The present invention has a characteristic that
1, the present invention processes workpiece end, and end is made to form inner recess in homogeneous thickness and outer tang, convenient for improving
The structural strength of workpiece and its bonding strength between connector, while convenient for improving the leakproofness of junction；It simultaneously can be right
The both ends of workpiece carry out consistent processing simultaneously, and workpiece is detected and corrected before processing, workpiece always can be in same axis
Upper rotation, is effectively guaranteed the consistency of workpiece both ends uniform stressed processing, while synchronizing to work pieces process end rotary squeezing,
It ensure that the uniformity of workpiece end thickness, convenient for the raising of Workpiece Machining Accuracy and processing efficiency.
2, effective solution of the present invention metal tube both-end consistent processing simultaneously, effectively raise processing precision and plus
The efficiency of work is detected and is corrected to metal tube while processing, after every metal tube processing is effectively guaranteed
Quality, the present invention are not limited to process metal tube, can also process to other tubing, effectively increase its application
Range.
Detailed construction of the invention is further described below in conjunction with the drawings and specific embodiments.
Detailed description of the invention
Fig. 1-is structure of extrusion schematic diagram；
Fig. 2-is the extruding angle schematic diagram of extrusion die and metal tube longitudinal profile；
Fig. 3-is metal tube end sectional view after processing；
1- guide rail, 2- crossbeam, 3- metal tube, 4- fixture, 5- sliding seat, 6- screw rod wheel, 7- synchronous motor, 8- screw rod, 9- are squeezed
Part, 10- elongated end, 11- supporting element, 12- inner recess, the outer tang of 13-.
Specific embodiment
Embodiment 1 is as shown in Figs. 1-3: a kind of outer 13 processing method of tang of metal tube 3, including guide rail 1, guide rail 1 are equipped with
Mold and fixture 4, fixture 4 are located at the centre of mold, and for clamping simultaneously rotating metallic pipe 3, fixture 4 clamps metal tube 3 same
When metal tube 3 can be corrected, so that metal tube 3 is on same central axis and is rotated always when rotating, convenient for improving pair
The machining accuracy and processing efficiency of 3 end of metal tube；3 end of metal tube is processed with mold, servo motor drives necking
Inner recess 12 is processed into 3 end of metal tube by mold, will have been processed among the above the metal tube of inner recess, then pass through extrusion die
Spinning is carried out to metal tube end, the direction of extrusion of extrusion die and the longitudinal profile of metal tube 3 are in 30-120 ° of angle, process shape
At outer tang 13.
Preferably, the longitudinal profile of the direction of extrusion of extrusion die and metal tube 3 is in 60-100 ° of angle.Preferably, extrusion die
The direction of extrusion of tool and the longitudinal profile of metal tube 3 are in 80-95 ° of angle, are conducive to outer tang 13 effect in homogeneous thickness, convenient for outer
The promotion of 13 structural strength of tang, and its bonding strength between joint outer part and it connect sealing effect.
Extrusion die vertically squeezes the longitudinal profile of metal tube 3 in 90 °, and extruding dynamics is 0.5-50 kilogram.
Preferably, squeezing dynamics is 10-30 kilogram.Preferably, squeezing dynamics is 20-25 kilogram；Prevent extruding force from spending greatly, no
Conducive to the molding of the outer tang 13 of metal tube 3, the structural strength of 3 end of metal tube is influenced；Extruding force spend it is small, with processing temperature
Reduction, be unfavorable for the processing efficiency and molding of the outer tang 13 of metal tube 3.
Extrusion die includes moving extrusion die for metal with respect to the extrusion 9 and supporting element 11 for being built in 1 two sides of guide rail
The end of pipe 3 is between extrusion 9 and supporting element 11, and extrusion 9 and supporting element 11 are with opposite perpendicular to 1 length direction of guide rail
Power squeeze metal tube 3, the both ends of metal tube 3 are processed to form outer tang 13.
Extrusion die further includes first driving device and the second driving device in first driving device, the first driving
Device drives extrusion 9 and supporting element 11 to move toward one another along perpendicular to 1 length direction of guide rail, and the second driving device drives extrusion
9 and supporting element 11 moved along 1 length direction of guide rail.
First driving device includes symmetrically arranged crossbeam 2, and crossbeam 2 is connected by screw rod 8, and is synchronized in opposite directions along screw rod 8
Or backwards to moving, screw rod 8 is equipped with forward screw thread and reverse thread, and passes through gear or belt under the driving of synchronous motor 7
Drive its rotation.Preferably, screw rod 8 is equipped with screw rod wheel 6 or gear, and screw rod 8 drives both ends horizontal by the driving of synchronous motor 7
Beam 2 moves towards or backwards to mobile；Preferably, screw rod wheel 6 is belt pulley, drives screw rod wheel 6 using belt, can reduce screw rod
The risk that 8 clamping stagnations and screw rod 8 fracture, while convenient for the raising of the mobile stationarity of crossbeam 2.
Second driving device includes the sliding seat 5 connecting with crossbeam 2, and sliding seat 5 is under the driving of driver on crossbeam 2
It is mobile, and the side of the upper end towards guide rail 1 extends to form elongated end 10, extrusion 9 is installed on elongated end 10.Preferably,
Extrusion 9 is pressure roller, supporting element 11 is supporting block, and pressure roller and supporting block are made of chromium steel or hard alloy, and driver is liquid
Cylinder pressure or cylinder, driver driving pressure roller moves on crossbeam 2, to 3 end of metal tube between pressure roller and supporting block
It is squeezed, 3 end of metal tube is gradually reduced, and forms outer tang 13 in homogeneous thickness.
Heated before the processing of 3 end of metal tube, heating temperature is 700-1800 DEG C of cause softening plastic deformation.It is preferred that
Ground, heating temperature are 750-1000 DEG C.Preferably, heating temperature is 800-900 DEG C；When temperature is greater than 1800 DEG C, metal tube 3
End excessively softens, and is unfavorable for the processing and molding of the outer tang 13 of metal tube 3, when the temperature is too low, influences outside 3 end of metal tube
The molding time of tang 13, influence processing efficiency.Heating device uses power for 120 kilowatts of high frequency induction heater, high frequency
Induction heater is equipped with heating coil, heats after the end that heating coil is inserted in metal tube 3 being powered when heating, heating time
Control is in 4s.
Inner recess 12 be processed as with necking die to rotated after heating 3 end in-flanges of metal tube, necking, in-flanges,
Through-hole is being carried out with the through-hole knife on necking die after necking, 3 end inner recess 12 of metal tube completes the process.
3 linear velocity of metal tube is 2-30m/s.Preferably, 3 linear velocity of metal tube is 5-20m/s.Preferably,
3 linear velocity of metal tube is 10-15m/s；When linear velocity is more than 30m/s, the rotatory inertia of metal tube 3 is larger, right
Its end be easy to cause end to tear when being squeezed, and when linear velocity is too low, influences 13 shape of tang outside 3 end of metal tube
At the thickness uniformity.
The both ends simultaneous processing of metal tube 3 at inner recess 12, then by extrusion die to 3 both ends simultaneous processing of metal tube at
Outer tang 13；According to the needs of processing, can the both ends to metal tube 3 process simultaneously, while can guarantee 3 liang of metal tube
The processing effect at end is consistent, the raising of precision and processing efficiency easy to process.
The specific formation of outer tang 13, metal tube 3 is mounted on fixture 4, using heating device to the end of metal tube 3
Carry out being heated to 700-1800 DEG C, make 3 end of metal tube softening reach plastic deformation or be heated to 3 end of metal tube have it is bright
Aobvious flare, rotating metallic pipe 3 process carrying out inner recess 12 to 3 end of metal tube using necking die, complete the process backed off after random
Necking die, then outer tang 13 is carried out to 3 end of metal tube after processing inner recess 12 using extrusion die and is processed；Work as metal tube
3 processing temperature is too low, can carry out being heated to plastic deformation in the end to metal tube 3 again；Starting the first driving dress
It sets, crossbeam 2 is moved along guide rail 1 to 4 direction of fixture, is in 3 end of metal tube between extrusion 9 and supporting element 11, starting the
Two driving devices drive extrusion 9 to perpendicular to the movement of 1 direction of guide rail, are uniformly squeezed 3 end of metal tube, metal tube 3
End starts zooming out, and metal tube 3 rotates while extruding, convenient for the uniformity of 3 pressed end thickness of metal tube, 3 end of metal tube
When being contracted to the size of setting, stop squeezing, according to through-hole knife of the needs of processing on utilization necking die to 3 end of metal tube
Portion carries out through-hole, tapping, the processing of the outer tang 13 of sizing completion.
Embodiment 2
A kind of processing method of the outer tang 13 of steel pipe, including following treatment process:
A), metal tube 3 is installed, and 3 metal tube 3 of metal tube is steel pipe, and the size of steel pipe is 63*4.1*810mm(radius * wall thickness * long
Degree), metal tube 3 is packed into fixture 4 and is clamped, clamping while can be corrected metal tube 3, and 3 end of metal tube is stretched
Fixture 4 out, starting driving motor driving drive metal tube 3 to make rotating motion, and the linear velocity of metal tube 3 is 20m/s, detection
Gap between 4 inner cavity of metal tube 3 and fixture, gap size represent 3 bending degree of metal tube, and the bigger metal tube 3 in gap is bent
Degree is bigger, and fixture 4 is corrected metal tube 3 while metal tube 3 rotates, when metal tube 3 and 4 inner cavity of fixture paste completely
It closes, illustrates that the correction of metal tube 3 is completed, detection is carried out to 3 end of metal tube and timing can be with 4 end metal of manual adjustment fixture
The scale that pipe 3 stretches out is convenient for Integral correction metal tube 3；It stops rotating after the completion of correction, the heating snare on heating device is existed
3 end of metal tube after correction is heated in the end of metal tube 3, and being heated to 800 DEG C reaches the softening of 3 end of metal tube
Plastic deformation, or it can be seen that heating device exits when apparent flare, be again started up driving motor drive metal tube 3 with
The linear velocity of 15m/s rotates.
B), 3 inner recess 12 of metal tube is processed, and the metal tube 3 after the heating in step a) is further processed, servo motor
It drives necking die to contact metal tube 3, extrusion process is carried out to 3 end of metal tube, the structure of the mold is with patent
Disclosed in CN206597831U it is a kind of for necking processing necking die structure it is identical: matrix be equipped with transverse part, arc sections,
Support portion and longitudinal direction portion are equipped with arc sections between transverse part and longitudinal direction portion, be transverse part, adjustment circle between support portion and arc sections
The angle r of arc portion and the angle R of transverse part can be to pipe end necking machine-shapings；Identical in the patent add is taken simultaneously
Work method processes 3 end of metal tube, and the cutters such as through-hole knife, screw tap, synchronous mold pair are also equipped on the mold
3 end of metal tube rotated after correction heating carries out the processing of in-flanges, necking, then by the through-hole knife on mold to metal tube
3 end through-hole of metal tube after 3 neckings makes 3 end of metal tube form inner recess 12.
C), 3 end moulding of metal tube, by the metal tube 3 after the processing inner recess 12 in step b), using extrusion die pair
The end of metal tube 3 is processed, and first driving device is started, and crossbeam 2 is moved along guide rail 1 to 3 direction of metal tube, makes metal tube
Between extrusion 9 and supporting element 11, the second driving device of starting drives extrusion 9 to move to perpendicular to 1 direction of guide rail for 3 ends
It is dynamic, 3 end of metal tube is uniformly squeezed, when extruding, is slowly advanced using 30kg dynamics, fltting speed lower than 5cm/s, by
The support of supporting block keeps uniformity to the extruding dynamics of 3 end of metal tube, prevents metal tube 3 from lateral deviation occurs, influence to process
Precision, 3 end bore of metal tube is gradually reduced after being squeezed, and is slowly formed outer tang 13 in homogeneous thickness, while extruding with
The linear velocity rotating metallic pipe 3 of 10m/s, convenient for the uniformity of 3 pressed end thickness of metal tube, 3 end of metal tube is contracted to set
Size when, stop squeezing, extrusion die exits after outer tang 13 forms, then with the external tang 13 of through-hole knife on necking die
End carries out through-hole, and carries out finishing and tapping to through-hole；According to the needs of processing, before processing outer tang 13, if temperature
The requirement of processing is not achieved, 3 end of metal tube can be carried out again using heating device adding heat temperature raising；Metal tube 3 is processed
Necking die exits after the completion, and stop rotating metal tube 3, and metal tube 3 is exited.
Embodiment 3
The processing method of tang 13 outside a kind of steel pipe both ends, including following treatment process:
A), metal tube 3 is installed, and 3 metal tube 3 of metal tube is steel pipe, and the size of steel pipe is 65*4.5*850mm(radius * wall thickness * long
Degree), by metal tube 3 from being packed into 4 clip cavity of fixture and clamping, clamping while, can be corrected metal tube 3, metal tube 3
Fixture 4 is stretched out at both ends, and starting driving motor driving drives metal tube 3 to rotate together, detects between metal tube 3 and 4 clip cavity of fixture
Gap, gap size represents 3 bending degree of metal tube, and gap is bigger, and 3 bending degree of metal tube is bigger, and fixture 4 drives metal
Pipe 3 is rotated with the linear velocity of 8m/s, and rotation while is corrected metal tube 3, when metal tube 3 is bonded with 4 clip cavity of fixture,
Illustrate that the correction of metal tube 3 is completed, carrying out detection and timing to 3 both ends of metal tube can manually adjust 4 both ends metal tube 3 of fixture to stretch
Scale out is convenient for Integral correction metal tube 3；It stops rotating after the completion of correction, by the heating snare on heating device in metal
The both ends of pipe 3 synchronize 3 both ends of metal tube after correction simultaneously and heat, are heated to 900 DEG C of post heating devices and exit, then
Secondary starting driving motor drives metal tube 3 to rotate with the linear velocity of 18m/s.
B), 3 inner recess 12 of metal tube is processed, and the metal tube 3 after the heating in step a) is further processed, servo motor
Driving necking die contacts 3 end of metal tube respectively, the necking die at 3 both ends of metal tube by servo motor driving backwards to or phase
Extrusion process is carried out to the mobile end to rotating metallic pipe 3, the structure of the necking die is CN206597831U public with patent
A kind of necking die structure for necking processing opened is identical: matrix is equipped with transverse part, arc sections, support portion and longitudinal direction
Portion, between transverse part and longitudinal direction portion be equipped with arc sections, between support portion and arc sections be transverse part, adjust arc sections the angle r and
It the angle R of transverse part can be to pipe end necking machine-shaping；Take in the patent identical processing method to gold simultaneously
Belong to pipe 3 and carries out necking processing；The cutters such as through-hole knife, screw tap are also equipped on the mold, necking die is to 3 both ends of metal tube
The synchronous processing for carrying out in-flanges, necking simultaneously, is passing through contracting of the through-hole knife to metal tube 3 on necking die after processing is completed
Mouth end carries out through-hole, and 3 both ends of metal tube is made to form inner recess 12.
C), the metal tube 3 after the formation inner recess 12 in step b) is used extrusion die pair by 3 end moulding of metal tube
The both ends simultaneous processing of metal tube 3,
Start first driving device, moves towards the crossbeam 2 positioned at 4 both ends of fixture to 3 direction of metal tube along guide rail 1, make gold
Belong to 3 both ends of pipe to be respectively positioned between extrusion 9 and supporting element 11, starting the second driving device driving extrusion 9 is to perpendicular to guide rail 1
Direction is mobile, is uniformly squeezed 3 end of metal tube, and when extruding uses 35kg dynamics to be slowly advanced, and fltting speed is lower than
5cm/s is kept uniformity to the extruding dynamics at 3 both ends of metal tube, prevents metal tube 3 from lateral deviation occurs by the support of supporting block,
Machining accuracy is influenced, 3 both ends bore of metal tube while being gradually reduced after being squeezed, is slowly formed outer tang 13 in homogeneous thickness,
With the linear velocity rotating metallic pipe 3 of 10m/s while extruding, convenient for the uniformity of 3 pressed end thickness of metal tube, 3 liang of metal tube
When end is contracted to the size of setting, stop squeezing, extrusion die exits after outer tang 13 forms, then with the through-hole on necking die
Knife carries out through-hole to 13 end of tang outside 3 both ends of metal tube simultaneously, and carries out finishing and tapping to through-hole；According to the need of processing
Want, before processing outer tang 13, if the requirement of processing is not achieved in temperature, can use heating device to 3 end of metal tube again
It carries out adding heat temperature raising；Necking die exits metal tube 3 after processing is completed, and stop rotating metal tube 3, and metal tube 3 is exited.
The preferred embodiments of the invention are described in detail above, it is apparent that the present invention is not limited in above-mentioned embodiment party
Case.Within the scope of the technical concept of the present invention, a variety of equivalent variations, these equivalent changes can be carried out to technical solution of the present invention
Type all belongs to the scope of protection of the present invention.In addition, it is necessary to which explanation, each described in above-mentioned specific embodiment
Technical characteristic separately can be independently combined, as long as it is within the scope of the technical concept of the present invention.
Claims (10)
1. a kind of outer tang processing method of metal tube, comprising the following steps:
Metal tube end is processed into inner recess using necking die by the first step；
Second step will be processed into the metal tube of inner recess, then carry out spinning to metal tube end by extrusion die in the first step,
The direction of extrusion of extrusion die and the longitudinal profile of metal tube are in 30-120 ° of angle, and processing forms outer tang.
2. the outer tang processing method of metal tube according to claim 1, it is characterised in that: the extrusion die is to metal tube
Longitudinal profile vertically squeezed in 90 °, extruding dynamics is 0.5-50 kilogram；The metal tube linear velocity is 2-
30m/s。
3. the outer tang processing method of metal tube according to claim 1 or 2, it is characterised in that: the metal tube end adds
Heat before work, heating temperature is 700-1800 DEG C of cause softening plastic deformation.
4. the outer tang processing method of metal tube according to claim 3, it is characterised in that: the inner recess is processed as with contracting
Mouth mold tool to rotated after heating metal tube end in-flanges, necking, with the through-hole knife on necking die after in-flanges, necking
Through-hole is carried out, metal tube end inner recess completes the process.
5. the outer tang processing method of metal tube according to claim 1, it is characterised in that: be equipped with below the necking die
Guide rail, necking die are moved along guide rail, and the fixture for clamping simultaneously rotating metallic pipe is also set on guide rail, and fixture is located at necking die
Centre or one end；Extrusion die is located at guide rail side.
6. the outer tang processing method of metal tube according to claim 1-5, it is characterised in that: the metal tube
Both ends simultaneous processing is at inner recess, then passes through extrusion die to metal tube both ends simultaneous processing into outer tang.
7. the outer tang processing method of metal tube according to claim 6, it is characterised in that: the extrusion die includes opposite
Be built in the extrusion and supporting element of guide rail two sides, the end of metal tube be placed between extrusion and supporting element, extrusion and
Supporting element squeezes metal tube with perpendicular to the opposite power in rail length direction, and the both ends of metal tube is made to be processed into outer tang.
8. the outer tang processing method of metal tube according to claim 7, it is characterised in that: the extrusion die further includes the
One driving device and the second driving device in first driving device, first driving device drive extrusion and supporting element edge
It is moved toward one another perpendicular to rail length direction, the second driving device drives extrusion and supporting element to transport along the rail length direction
It is dynamic.
9. the outer tang processing method of metal tube according to claim 8 and its device, it is characterised in that: first driving
Device includes symmetrically arranged crossbeam, and crossbeam is connected by screw rod, and is synchronized along screw rod and moved in opposite directions or backwards, and screw rod is equipped with
Forward screw thread and reverse thread, and its rotation is driven by gear or belt under the driving of synchronous motor.
10. the outer tang processing method of metal tube according to claim 9 and its device, it is characterised in that: described second drives
Dynamic device includes the sliding seat connecting with crossbeam, sliding seat under the driving of driver in being moved on crossbeam, and the upper end direction
The side of guide rail extends to form elongated end, and pressure roller is installed on elongated end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910819389.5A CN110523867A (en) | 2019-08-31 | 2019-08-31 | A kind of outer tang processing method of metal tube |
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| CN201910819389.5A CN110523867A (en) | 2019-08-31 | 2019-08-31 | A kind of outer tang processing method of metal tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113000703A (en) * | 2021-02-26 | 2021-06-22 | 台州博翔旋压机床有限公司 | Combined necking-in inversion spinning method |
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