CN110116173A - Necking lathe for machining and its processing method in a kind of workpiece - Google Patents
Necking lathe for machining and its processing method in a kind of workpiece Download PDFInfo
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- CN110116173A CN110116173A CN201910459178.5A CN201910459178A CN110116173A CN 110116173 A CN110116173 A CN 110116173A CN 201910459178 A CN201910459178 A CN 201910459178A CN 110116173 A CN110116173 A CN 110116173A
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- knife
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- 238000003754 machining Methods 0.000 title claims abstract description 11
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000007493 shaping process Methods 0.000 claims abstract description 16
- 230000006698 induction Effects 0.000 claims description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 239000000110 cooling liquid Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 20
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000008719 thickening Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000004513 sizing Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241000469816 Varus Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
- B21D19/10—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws working inwardly
-
- 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
- B21D37/10—Die sets; Pillar guides
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Forging (AREA)
Abstract
The present invention provides necking lathe for machining and its processing methods in a kind of workpiece, carry out through-hole, the rotation of workpiece opposing through-bores knife using through-hole knife to the workpiece after heating necking machine-shaping, while heating to workpiece, the through-hole knife is coniform arc.Workpiece is carried out to use through-hole knife of different shapes in through-hole process, the dynamics of the uniformity and extruding that interior necking in-flanges thickens can effectively be improved, convenient for the raising of interior throat structure intensity, simultaneously convenient for the formation of inner recess and the effect extended to inside workpiece, convenient for the raising of the bonding strength and sealing effect of external workpiece, the friction effect for generating the contact surface difference between through-hole knife and workpiece simultaneously, convenient for being heated to workpiece, energy consumption is saved, while thickening the adjusting of the uniformity convenient for interior necking.
Description
Technical field
The present invention relates to necking processing technique field, necking lathe for machining and its processing method in especially a kind of workpiece.
Background technique
Necking workpiece is very widely used in life, with advances in technology and development, to the application of every technology and
The requirement of technology is also higher and higher, and necking workpiece applies more and more, the contracting of general pressure vessel head on fracturing device
The method that mouth molding uses is spinning, and rotary press modelling easily causes the circularity of necking low (i.e. oval), is held to the pressure in later period
Device assembly brings difficulty.
Such as Chinese patent CN01126577.9, necking is carried out using squeezing shaping mode, it is big to be suitable for elasticity modulus
With the tubing compared with softwood matter, it is equally only applicable to the necking processing of less demanding to necking end tensile strength, for harder material
Tubing, can have the small weak spot of a whole circle tensile strength at squeezing shaping, can not process and bear 20-150MPa pressure vessel
Tubing, shaping come out necking end consistency it is poor, necking end thickens axially outward.
The method that Chinese patent CN200710185660.1 is currently widely used necking processing and manufacturing pressure vessel, leads to
After crossing both-end spinning necking machine-shaping, heat preservation is quenched and is tempered, long processing time, necking end thickens axially outward.In
The necking method of state patent CN201210389715.1 is continuously to carry out radial direction to conduit by the cavity plate contracting block of two separate types
Impact, two halves cavity plate contracting block make conduit generate plastic deformation by each Secondary Shocks, and conduit is constantly sent into mould, two halves cavity plate
Contracting block then bump conduit, until completing entire necking processing；Height is required to the technical level of worker, holds contracting by experience
It makes a slip of the tongue journey, the pressure vessel consistency produced is poor, and necking end thickens axially outward.
A kind of diameter reducing working method and its used necking die are disclosed application No. is 201710359644.3 and are answered
With diameter reducing working method is to first pass through fixture to fix tubing, then rotate tubing and heating pipe end by fixture, by tubing
End heat is to after being close to or up to plastic deformation, and after necking die front contact to pipe end, pipe end is from reducing die
Tool front is rearwardly moved, and necking die carries out extrusion forming to pipe end.Pressure is made by diameter reducing working method in tubing
Container.The necking die is that transverse part, arc sections, support portion and longitudinal direction portion are equipped on matrix, transverse part and longitudinal direction portion it
Between be equipped with arc sections, between support portion and arc sections be transverse part.The present invention has processing method simple and quick, is capable of processing out not
The necking end of similar shape, necking end consistency is good, and necking end thickens axially outward or necking end thickens axially inwards, processing method
With necking die energy industrial applications.
But this method is carrying out tubing or workpiece to be formed by the thickness of throat structure in-flanges not in process
Uniformly, inner recess extends too short, influences bonding strength and sealing effect between joint outer part.
Summary of the invention
The object of the present invention is to overcome the above-mentioned deficiency of the prior art, and one kind is provided and is uniformly increased convenient for workpiece in-flanges
Thickness enhances the interior necking connecting with joint outer part and convenient for necking lathe for machining and its processing method in the workpiece of sealing.
The technical scheme is that diameter reducing working method in a kind of workpiece, to the workpiece after heating necking machine-shaping
Through-hole, the rotation of workpiece opposing through-bores knife are carried out using through-hole knife, while workpiece is heated, the through-hole knife is coniform arc.
Further, it is described it is coniform be inclined-plane, through-hole knife it is coniform it is upper be inclined-plane, inclined-plane can multiple faces settings.
Further, it is described it is coniform be parabola, through-hole knife it is coniform be parabola, convenient for workpiece carry out through-hole into
Knife.
Further, it is described it is coniform be asymptote, the coniform of through-hole knife is asymptote, convenient for workpiece inner recess to workpiece
Interior extension.
Further, workpiece is mounted on lathe and rotates, and workpiece is mounted on the fixture on lathe when use, and fixture drives
Workpiece rotation movement, through-hole knife opposite piece are static.
Further, through-hole knife is located on lathe and rotates, and through-hole knife rotates when use, while workpiece can also be with opposing through-bores
Knife counter-rotating, the raising of the two relative rotation efficiency easy to process.
Further, workpiece is heated, linear velocity is greater than 2m/s, increases frictional heat generation, convenient for heating and heating to workpiece
The adjusting of temperature, is convenient for energy saving, and workpiece through-hole carries out screw tap sizing after processing is completed, to workpiece.
A kind of interior necking lathe for machining using above-mentioned processing method, lathe include fixture, workbench and heating device,
Fixture is set to one end of workbench, and the other end is equipped with interior necking die, and heating device is set to the side of workbench, the interior necking
Mold is equipped with the conical through hole knife, and reinforcement part is equipped between through-hole knife and interior necking die.
Further, the interior necking die includes die ontology, through-hole section and the choke for squeezing in-flanges, mold
Ontology rear end is equipped with mounting portion, and the front end of die ontology is equipped with choke, and through-hole section is in choke side, the through-hole section
Equipped with through-hole knife, through-hole knife side is equipped with mounting hole, and mounting hole is equipped with tight for installing screw tap and dental lamina, interior necking die right end
Fixing bolt.
Further, the choke includes transverse part, longitudinal direction portion and arc sections, and longitudinal portion is located at the upper surface of transverse part,
Arc sections are equipped with ladder in arc sections between longitudinal direction portion and transverse part, and ladder includes left side, right side and Circular Nose Cutting Edge,
Circular Nose Cutting Edge is groove between adjacent two ladder between left side and right side.
Further, the heating device includes high frequency induction heater and driving device, and driving device is set by support plate
In on lathe, high frequency induction heater is connect with driving device, and the high frequency induction heater is connect with hollow circular-tube one end, empty
The heart round tube other end is equipped with circle, and the internal diameter of circle is greater than the outer diameter of workpiece, and the U-shaped structure of hollow circular-tube is made of copper, in hollow pipe
Logical circulating cooling liquid.
The present invention has a characteristic that
1, workpiece is carried out using through-hole knife of different shapes in through-hole process, can effectively improves interior necking in-flanges and increases
The dynamics of the thick uniformity and extruding, convenient for the raising of interior throat structure intensity, while convenient for the formation of inner recess and to workpiece
The effect of internal stretch convenient for the raising of the bonding strength and sealing effect of external workpiece, while making between through-hole knife and workpiece
The friction effect that generates of contact surface difference save energy consumption, while thickening the uniformity convenient for interior necking convenient for heating to workpiece
It adjusts.
2, through-hole knife opposite piece uses different rotation modes, convenient for generating frictional heat between workpiece and through-hole knife, just
Through-hole is convenient for the formation and sizing of workpiece inner recess repeatedly in the formation and uniform thickened of necking in workpiece, via process.
3, on interior necking die ladder setting, left side and right side mutual cooperation effect workpiece end is scraped
Crowded and shaping, effectively realizes when processing to workpiece end, while to the effect of end shaping, while convenient for improving
The efficiency of in-flanges, the raising of efficiency easy to process.
4, the setting of high-frequency induction heating effectively raises the efficiency that the temperature of workpiece rises, while open circles pipeloop can
Multi-turn setting can effectively control heating temperature convenient for improving the heated perimeter of workpiece and the raising of the rate of heat addition, be convenient for workpiece
The processing effect and efficiency of interior necking.
5, it is equipped with circulating cooling liquid in hollow circular-tube, when carrying out heat temperature raising to workpiece, high temperature can be effectively reduced
Influence to high frequency induction heater, convenient for improving the service life of heater, notice hollow circular-tube uses copper, is convenient for open circles
The conduction of heat prevents from becoming because temperature is excessively high convenient for cooling effect and to the protection of hollow circular-tube between pipe and coolant liquid
Shape or thawing.
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 machine tool structure schematic diagram of the present invention；
Fig. 2-is Fig. 1 medium-high frequency induction heater enlarged drawing schematic diagram；
Fig. 3-is interior reducing die lamps structure schematic diagram；
Fig. 4-is arc sections enlarged diagram in Fig. 3；
Fig. 5-is that four kinds of different structures of through-hole knife illustrate comparison diagram；
1-high frequency induction heater, 2-mounting bases, 3-driving devices, 4-hollow circular-tubes, 5-circles, 6-jump bits, 7-
Fixing seat, 8-X-axis, 9-Y-axis, 10-workbench, 11-workpiece, 12-fixtures, 13-support plates, 14-die ontologies,
15-longitudinal directions portion, 16-arc sections, 17-transverse parts, 18-through-hole knives, 19-fastening bolts, 20-mounting holes, 21-reinforce
Portion, 22-mounting portions, 23-left sides, 24-right sides, 25-Circular Nose Cutting Edges, 26-grooves.
Specific embodiment
As shown in Figs. 1-5, necking lathe for machining in a kind of workpiece 11, lathe include fixture 12, workbench 10 and heating dress
It sets, fixture 12 is set to one end of workbench 10, and the other end is equipped with interior necking die, and heating device is set to the side of workbench 10,
Interior necking die is equipped with conical through hole knife 18, and reinforcement part 21 is equipped between through-hole knife 18 and interior necking die.
Interior necking die includes die ontology 14, through-hole section and the choke for squeezing in-flanges, after die ontology 14
End is equipped with mounting portion 22, and the front end of die ontology 14 is equipped with choke, and through-hole section is set to choke side, is equipped in through-hole section logical
Hole knife 18,18 front end of through-hole knife are convenient in cone, conical setting to 11 through-hole of workpiece, while convenient for necking inner recess
It is formed, through-hole knife 18 is located at the right side of die ontology 14, and reinforcement part 21, through-hole knife are equipped between through-hole knife 18 and die ontology 14
18 sides are equipped with mounting hole 20, and mounting hole 20 is equipped with fastening bolt 19 for installing screw tap and dental lamina, interior necking die right end, tightly
Fixing bolt 19 is for fixing screw tap or dental lamina；When carrying out through-hole to workpiece 11, reinforcement part 21 can play the end of workpiece 11
Further squeezing effect, convenient for the formation of inner recess when through-hole, while convenient for improving the company of through-hole knife 18 and die ontology 14
Connect intensity.
Choke includes transverse part 17, longitudinal direction portion 15 and arc sections 16, and longitudinal portion 15 is located at the upper surface of transverse part 17, circle
Arc portion 16 is equipped with ladder between longitudinal direction portion 15 and transverse part 17 in arc sections 16.
Ladder includes left side 23, right side 24 and Circular Nose Cutting Edge 25, Circular Nose Cutting Edge 25 be located at left side 23 and right side 24 it
Between, it is groove 26 between adjacent two ladder, the depth of groove 26 is 0.5-10mm, and the lateral distance between adjacent two ladder is work
Between 0.05-0.5 times of 11 thickness of part, it is preferable that the depth of groove 26 is 0.5-10mm, between adjacent two ladder laterally away from
From between 0.05-0.5 times for 11 thickness of workpiece, the plastic deformation processed after end is heated convenient for workpiece 11 realizes in-flanges, together
When convenient for improving the effect and efficiency of in-flanges, process the uniformity that thickens of end convenient for workpiece 11；Preferably, 23 gradient of left side
Less than 24 gradient of right side, drop when workpiece 11 being made to reach right side 24 by Circular Nose Cutting Edge 25 is bigger, is more conducive to varus
The formation on side.
When the end of workpiece 11 is at ladder left side 23,11 rotation of workpiece forms 11 end of workpiece and squeezes, and drives
It 11 end of workpiece that can be plastically deformed after heating, while can be to the outer surface of 11 end of workpiece to carrying out flange inside workpiece 11
Shaping is carried out, when 11 end of workpiece passes through Circular Nose Cutting Edge 25, it is further that Circular Nose Cutting Edge 25 plays extruding scraping to 11 end of workpiece
The effect for improving in-flanges, when workpiece 11 is moved to right side 24 from Circular Nose Cutting Edge 25, because between Circular Nose Cutting Edge 25 and right side 24
Range difference, so that 11 end of workpiece is inwardly carried out flange, effectively raise the effect that in-flanges thickens, simultaneously
Also shaping can be carried out to 11 end of workpiece.
The angle of arc sections 16 is r, and the angle r is 1-100 °, and the angle r incrementally increases from left to right；Preferably, 5-30 ° of the angle r it
Between；When workpiece 11 is moved right with respect to necking die, gradually change from point contact to face contact, convenient for 11 end of workpiece
In-flanges and compression and thickening, point contact are the contact point between the exterior string and transverse part 17 and longitudinal direction portion 15 of 11 end wall of workpiece,
Face contact is the face contact between the circular arc and arc sections 16, transverse part 17 and longitudinal direction portion 15 of 11 end of workpiece.
Longitudinal portion 15 is vertical with transverse part 17, the front end face in longitudinal portion 15 and the central transverse axis angulation of die ontology 14
R is spent, angle R is 1-89 °, and preferred R is 4-10 °, and the distance between longitudinal 15 right end of portion and die ontology 14 are L, and L is for certainly
Determine the in-flanges thickness of workpiece 11, the size of L distance is then that pipe end is squeezed the distance of shortening, while the part shortened is used
It is thickened in pipe end, convenient for improving the structural strength of pipe end；When workpiece 11 and interior necking die left end initial position
It can also move and drive on boldly to 11 axis direction of workpiece when contact, the distance S of movement and interior necking die longitudinal direction portion 15 and mold
The distance between ontology 14 L is then the part of 11 end of workpiece, and the part of shortening is for observing thickening for end.
Heating device includes high frequency induction heater 1 and driving device 3, and driving device 3 is set to lathe by support plate 13
On, high frequency induction heater 1 is connect with driving device 3, driving device 3 be cylinder or hydraulic cylinder, high frequency induction heater 1 with
Lathe is flexibly connected by mounting base 2, and high frequency induction heater 1 is connect with 4 one end of hollow circular-tube, and 4 other end of hollow circular-tube is set
There is circle 5, the internal diameter for enclosing 5 is greater than the outer diameter of workpiece 11, and driving device 3 is used to drive the activity of high frequency induction heater 1, convenient for will
Circle 5, which is inserted in workpiece 11, processes end, convenient for processing the raising of end heating and heating efficiency to workpiece 11；High frequency induction heater 1
Be arranged effectively raise workpiece 11 temperature rise efficiency, while hollow circular-tube 4 circle 5 can multi-turn 5 be arranged, convenient for improve work
The heated perimeter of part 11 and the raising of the rate of heat addition, can effectively control heating temperature, imitate convenient for the processing of necking in workpiece 11
Fruit and efficiency.
The U-shaped structure of hollow circular-tube 4 is made of copper, and circulating cooling liquid is led in hollow pipe, coolant liquid is tap water, when to work
When part 11 carries out heat temperature raising, influence of the high temperature to high frequency induction heater 1 can be effectively reduced, convenient for improving heater
Service life, hollow circular-tube 4 uses copper, convenient for the conduction of heat between hollow circular-tube 4 and coolant liquid, convenient for cooling effect and right
The protection of hollow circular-tube 4 prevents from deforming or melting because temperature is excessively high.
Jump bit 6, X-axis 8, Y-axis 9 and fixing seat 7 are additionally provided on lathe, jump bit 6 is installed on workbench by fixed frame
On 10, the setting of jump bit 6, which can according to need, forges workpiece 11, convenient for improving the structural strength of workpiece 11, X-axis 8
It is mutually perpendicular to Y-axis 9 and energy two-axle interlocking, the top of two axis is equipped with fixing seat 7, fixing seat 7 is used for installation mold, while lathe
Left end be equipped with numerical control screen, for controlling the operation of entire lathe and the setting of parameter, convenient for easy to operate and processing efficiency
It improves.
Necking processing in workpiece 11 is processed using following methods, the workpiece 11 after heating necking machine-shaping is adopted
Through-hole, the rotation of 11 opposing through-bores knife 18 of workpiece are carried out with through-hole knife 18, while workpiece 11 is heated, through-hole knife 18 is coniform arc
Shape.
Coniform is inclined-plane, and the coniform of through-hole knife 18 is above inclined-plane, the raising of the uniformity is thickened convenient for interior necking, simultaneously
It inclined-plane can multiple face settings.
Coniform is parabola, and the coniform of through-hole knife 18 is that parabola is convenient for convenient for carrying out through-hole feed to workpiece 11
The raising of processing efficiency, while convenient for enhancing the extruding dynamics of internal necking, convenient for the raising of 11 structural strength of workpiece.
Coniform is asymptote, and the coniform of through-hole knife 18 is asymptote, extends convenient for inner recess into workpiece 11, is convenient for
The raising of the bonding strength and sealing effect of joint outer part and workpiece 11.
Through-hole knife 18 can also be arranged to other planforms, to adjust 11 inner recess of workpiece to 11 internal stretch of workpiece
Length and workpiece 11 in the uniformity that thickens of necking, convenient for improving the bonding strength between workpiece 11 and joint outer part
And structural strength, convenient for connecting the raising of sealing effect.
Workpiece 11 is mounted on lathe and rotates, and workpiece 11 is mounted on the fixture 12 on lathe when use, 12 band of fixture
It starts building 11 rotary motion of part, 18 opposite piece 11 of through-hole knife is static.
Through-hole knife 18 is located on lathe and rotates, and through-hole knife 18 rotates when use, while workpiece 11 can also be with opposing through-bores
18 counter-rotating of knife, the raising of the two relative rotation efficiency easy to process.
Through-hole knife 18 and the mode of 11 relative rotation of workpiece are a variety of, make in rotary course generate frictional heat come to workpiece 11 into
Row heating, keeps constant the temperature of workpiece 11 in process, increases convenient for carrying out effect and the interior necking of through-hole to workpiece 11
The thick uniformity.
Workpiece 11 is heated, linear velocity is greater than 2m/s, increases frictional heat generation, convenient for the heating of workpiece 11 and heating temperature
Adjusting, be convenient for energy saving, 11 through-hole of workpiece after processing is completed, to workpiece 11 carry out screw tap sizing.
When carrying out through-hole to the workpiece 11 after heating necking machine-shaping, make through-hole knife 18 on 9 direction of Y-axis to workpiece
11 axis direction is drive on boldly, and entirely into through-hole knife 18, while workpiece 11 is made rotating motion by the drive that fixture 12 rotates, and rotates linear speed
Degree is greater than 2m/s, and repeatedly feed repeatedly, 11 end of workpiece prolongs the material of end in workpiece 11 by the extruding of through-hole knife 18
It stretches, forms inner recess, the formation of inner recess is convenient in multiple feed, while being also convenient for internal recess sizing, it is preferable that makes inner recess
It is always positioned on the center line axis of workpiece 11, convenient for the connection of joint outer part, while being also convenient for workpiece 11 and processing what end thickened
The uniformity, it is uniform convenient for the receiving dynamics of inner recess, convenient for the raising of 11 service life of workpiece.
Workpiece 11 after completion inner recess is withdrawn from into through-hole knife 18, tapping is then carried out, forms internal screw thread or internal and external threads,
Or further working position is cut, after processing is completed to 11 cooling and shaping of workpiece.
Workpiece 11 is pressure vessel or pipe fitting, and pressure vessel includes sinus property gas tank, fuel gas conduit, hydraulic tank, storage tank, pressure
Power bottle and fire extinguisher, pipe fitting include steel pipe, compo pipe, expansion tube and copper pipe.
It is first that steel pipe one end is fixed by fixture 12 when being processed to steel pipe, by the circle on high frequency induction heater 1
5 sets are processed end in steel pipe, using 2.2 m/s linear velocity rotating steel tubes, are reached 800-1000 DEG C to steel pipe processing end temperature, are improved
Processing end relative movement to the left end initial position of interior necking die is used the relatively interior necking of steel pipe to 2.6m/s by linear velocity
Mold is mobile to its tail portion, realizes that in-flanges thickens while shaping to steel tube end part, after the processing is completed, using interior necking die
On be that 18 pairs of processing end ends of through-hole knife carry out through-holes, repeated multiple times through-hole, which makes to process end inner recess, to be formed, and stops heating, then
Internal thread machining is carried out to steel pipe by screw tap again, or carries out the processing of internal screw thread to steel pipe by screw tap, it is then cooling internal
Recess carries out shaping.
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. diameter reducing working method in a kind of workpiece carries out through-hole, work using through-hole knife to the workpiece after heating necking machine-shaping
The rotation of part opposing through-bores knife, while workpiece is heated, it is characterised in that: the through-hole knife is coniform arc.
2. diameter reducing working method in workpiece according to claim 1, it is characterised in that: described coniform for inclined-plane.
3. diameter reducing working method in workpiece according to claim 1, it is characterised in that: described coniform for parabola.
4. diameter reducing working method in workpiece according to claim 1, it is characterised in that: described coniform for asymptote.
5. diameter reducing working method in workpiece according to claim 1, it is characterised in that: the workpiece is mounted on lathe simultaneously
Rotation.
6. diameter reducing working method in workpiece according to claim 1, it is characterised in that: the through-hole knife is located on lathe simultaneously
Rotation.
7. diameter reducing working method in workpiece according to claim 5 or 6, it is characterised in that: heating workpiece, linear velocity
Greater than 2m/s.
8. a kind of interior necking lathe for machining using the described in any item processing methods of claim 1-7, lathe includes fixture, work
Make platform and heating device, fixture is set to one end of workbench, and the other end is equipped with interior necking die, and heating device is set to workbench
Side, it is characterised in that: the interior necking die is equipped with the conical through hole knife, sets between through-hole knife and interior necking die
There is reinforcement part.
9. interior necking lathe for machining according to claim 8, it is characterised in that: the interior necking die includes mold sheet
Body, through-hole section and the choke for squeezing in-flanges, die ontology rear end are equipped with mounting portion, and the front end of die ontology is equipped with contracting
Oral area, through-hole section are set to choke side, through-hole knife are equipped in the through-hole section, and through-hole knife side is equipped with mounting hole, mounting hole
For installing screw tap and dental lamina, interior necking die right end is equipped with fastening bolt；Choke includes transverse part, longitudinal direction portion and circular arc
Portion, longitudinal portion are located at the upper surface of transverse part, and arc sections are equipped with ladder, rank between longitudinal direction portion and transverse part in arc sections
Ladder includes left side, right side and Circular Nose Cutting Edge, and Circular Nose Cutting Edge is recessed between adjacent two ladder between left side and right side
Slot.
10. the interior necking lathe for machining according to requiring 8, it is characterised in that: the heating device includes high-frequency induction heating
Device and driving device, driving device are set on lathe by support plate, and high frequency induction heater is connect with driving device, the height
Frequency induction heater is connect with hollow circular-tube one end, and the hollow circular-tube other end is equipped with circle, and the internal diameter of circle is greater than the outer diameter of workpiece, empty
The U-shaped structure of heart round tube is made of copper, and circulating cooling liquid is led in hollow pipe.
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| CN201910459178.5A CN110116173B (en) | 2019-05-29 | 2019-05-29 | Workpiece inner shrinkage processing lathe and processing method thereof |
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| CN110116173B CN110116173B (en) | 2024-03-29 |
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| CN110523867A (en) * | 2019-08-31 | 2019-12-03 | 远军热能动力科技有限公司 | A kind of outer tang processing method of metal tube |
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|---|---|
| CN110116173B (en) | 2024-03-29 |
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