CN100467159C - Unsymmetrical radial welding punched high performance precision blanking machine - Google Patents
Unsymmetrical radial welding punched high performance precision blanking machine Download PDFInfo
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- CN100467159C CN100467159C CNB2007100180004A CN200710018000A CN100467159C CN 100467159 C CN100467159 C CN 100467159C CN B2007100180004 A CNB2007100180004 A CN B2007100180004A CN 200710018000 A CN200710018000 A CN 200710018000A CN 100467159 C CN100467159 C CN 100467159C
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Abstract
The invention relates to an asymmetrical radial forging highly efficient precision feeder which comprises at least the drive mechanism, radial forging feeding and stroke micro tuning structure and bar material fixture device, with the radial feeding device using hammer cycloid design, cam using cylinder roller device, without impact and stable movement. The turbine worm stroke adjusting device uses separate turbine gear structure, and be able to improve stroke adjustment structure' kinematic behavior. Through servo generator variable-frequency control function, it can make precise blank with various material and different size.
Description
Technical field
The invention belongs to the nearly clear height of low energy consumption and imitate the precision molding technology field.Relate to a kind of blanking machine, particularly a kind of asymmetric radial welding punched high performance precision blanking machine, this blanking machine adopts and radially forges towards principle, realizes that the fatigue crack of bar under the cycle radial loaded circumferentially produces, expands until fracture, thereby finishes precise blanking.
Background technology
The cutting stock problems of metal bar material extensively are present among the procedure for preparation of cold extrusion, die forging, metal bracelet pin, rolling bearing roller, bolt, nut, pin, axle class part, and in these blanking operations, the blanking enormous amount, for example the annual metal bracelet length of producing in the township of the chain in Jinhua, Zhejiang area can reach more than one hundred million rice, the annual needle roller that needs in Beijing Needle Bearing Factory reaches up to ten million, and the annual cold-extruded part of producing of Liaoning Jinwei Auto Motor ﹠ Apparatus Co., Ltd. need descend bar to reach 2,000,000.But exist problems such as stock utilization is low, noise is big, die life is low, blanking pressure is big, production efficiency is low, energy consumption is high, cross section quality difference to some extent in the metal current bar baiting method commonly used, do not meet the green manufacturing STRATEGIES OF SUSTAINABLE DEVELOPMENT, develop the precise blanking technology of the energy-efficient material-saving of bar as early as possible and equip imperative, to promote Chinese machinery manufacturing industry development, the Revival of China mechanized equipment manufacturing industry.
Also be that the most direct the simplest precise blanking method comprises that lathe cuts off and old-fashioned hacksawing machine is sawed-off at first,, exist production efficiency low, waste shortcomings such as raw material are serious though these two kinds of baiting methods obtain smooth section.Though the early stage baiting method of hyper tape saw has had certain improvement, it is too low that its blanking efficient still shows, and can't satisfy large batch of requirement in the industrial production, and saw kerf waste raw material.For this reason, extensively adopt the method for shearing blanking on punch press or special-purpose bar shears in the industrial production afterwards, but common shearing blanking method blanking pressure is big, energy consumption is big, under the bar section present the tangible shape of a hoof, in order to satisfy next procedure such as cold-stamped requirement, have to after common shearing blanking, arrange again the operation of one smooth section of lathe turning, so just reduced production efficiency, wasted material, increased production cost.In view of the deficiency of shearing blanking mode, the low stress baiting method obtains people and greatly pays close attention to.
Bar low stress baiting method is applied to the theory of fracture mechanics among the precise blanking of bar, this method is a prefabricated circumferential surface crackle on bar artificially, bar to prefabricated circumferential surface crackle applies certain force shearing separation then, and make the bar fracture that the plastic deformation of macroscopic view the time not take place, carry out with the form of low stress brittle fracture.The researcher of the former Soviet Union had once designed a kind of based on bar rotation, the static tired blanking method of rotoflector of load the seventies in 20th century.Domestic scholars also begins to have carried out the tired blanking design of low stress rotoflector in the eighties, Xi'an Communications University forging and pressing teaching and research room in 1992 just the rotoflector fatigue blanking to common used material carried out the deep research of system, people such as professor Wei Qingtong of Gansu Polytechnical Univ have also carried out a large amount of research in this field.So years of researches make the flexural fatigue baiting method that remarkable progress arranged, for high strength inductile material, blanking as high-carbon steel, tool steel, bearing steel and high-speed steel etc. has embodied its superiority, but generally speaking, the productivity ratio of this baiting method is on the low side, the draw ratio L/D of bar is required big (requiring L/D 〉=1 usually), therefore, also there is big difficulty in blanking to this cutting mode to the undercoat base, tends to cause that blanking pressure is big, cross section quality is poor.
The Yu Dehong of Xi'an Communications University professor, Zhao Sheng ton professor, Chen Jinde professor leader's research group since the research work of the low stress blanking of just being devoted to metal bar material the eighties in 20th century, the low stress cutting method of proposition has obtained national inventing patent.The shear stress level of this method is low, and productivity ratio is very high, causes the workpiece distortion of detrusion very little even do not have, and has improved the quality of shearing bar greatly, therefore is well suited for ferrous metal particularly high rigidity and inductile material blanking.But it is limited that its applicable material ranges still shows, and is difficult to break through the qualification of material draw ratio.
To sum up, the present invention proposes a kind of asymmetric radial welding punched high performance precision blanking method, and finished designing and developing of machine structural parts.
Summary of the invention
The objective of the invention is to, a kind of asymmetric radial welding punched high performance precision blanking machine is provided.This blanking machine can impel crackle by the radially circumference expansion of bar surface, therefore can obtain good cross section quality, and have advantages such as the range of work is wide, efficient is high, quality is good.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of asymmetric radial welding punched high performance precision blanking machine, this blanking machine comprise transmission mechanism at least, radially forging sweeps away material and stroke fine tuning structure and bar fixture, it is characterized in that:
Described transmission mechanism mainly is made of main motor, driving pulley, driving-belt, driven pulley, transmission main shaft, locking nut, connecting key, regulating sleeve and main shaft fixed cover, the driving pulley that main driven by motor key is connected in motor transmission shaft rotates, drive driven pulley and transmission main shaft rotation by driving-belt, the gearratio of transmission mechanism is 5:1;
Driven pulley is connected on the transmission main shaft by connecting key, and transmission main shaft is connected with the main shaft fixed cover by the aligning roller bearing, and main shaft fixed cover and fuselage welding are fixing, and blanking mould and hammer lever (26) are rotated under transmission main shaft drives;
Described radially forging sweeps away material and the stroke fine tuning structure is made of backing plate, fine setting worm gear, fine setting worm gear retainer ring, regulating rod, fine setting support, tup feed cam, sector tooth block, worm screw, fine setting motor, blanking mould and hammer lever; The fine setting worm gear cooperates with regulating rod by inner chute, and drives its motion; Fine setting worm gear retainer ring is fixedlyed connected with fuselage, and the fine setting worm gear can rotate freely in fine setting worm gear retainer ring, and regulating rod and tup feed cam are fixedly connected on the fine setting support;
Fine setting worm gear and sector tooth block are realized being located by connecting by bolt and alignment pin, and sector tooth block and worm screw are meshing with each other; In the sliding tray of transmission main shaft, hammer lever promotes the blanking mould and radially moves under the effect of tup feed cam by mounted in pairs for hammer lever and blanking mould;
Described bar fixture comprises blanking sleeve, bar fixed muffle, polyurethane cushion cover and bar fixed support, and the bar fixed support is fixed on the fuselage by the bolt connection; The bar fixed muffle is connected with the bar support by interference fits, and an end of blanking sleeve forms with fuselage by the polyurethane cushion cover and cooperates, and the other end contacts with the blanking mould,
In the blanking process, bar one end is installed in the endoporus of bar fixed muffle, and an other end inserts in the blanking sleeve, under the acting in conjunction of blanking mould and bar fixed muffle, finishes bar and radially forges the material process that sweeps away.
Major technique characteristics of the present invention are as follows:
The mechanical property difference of different materials, for this reason, the present invention has designed the radially continuous adjustment structure of drafts.During blanking, first fixing drafts of at first given hammer, thus will produced certain amount of deflection by the end of the bar of blanking, but this might not make the bar fracture, so in the blanking process, will regulate to the drafts of tup.Fine setting worm gear drives regulating rod turns over an angle, the fine setting pedestal will rotate, because hammer lever and regulating rod be eccentric placement the on the fine setting pedestal all, then the distance at hammer lever and bar center can change, thereby regulate tup and depressing the radially drafts of process, this drafts can rely on theory and finite element numerical simulation to obtain with as the laboratory reference value, worm screw is driven by AC servomotor, the angle that control fine setting worm gear turns over is to reach the purpose of controlling the hammerhead radial drafts in the course of the work.
Designed and to have realized 28 radially evenly tired novel load maintainers that load of bar single-revolution.This load maintainer adopts cycloid as working curve, can guarantee stable motion performance and dynamic performance in the tup loading procedure, makes the blanking process not have impact, phenomenons such as overload.This cam control curve has maximum radial acceleration 3.5m/s
2, maximum inertia force 12N.
Design the radially adjustable fine setting Worm and worm-wheel gearing of depression stroke amount, controlled stroke scope 0～4mm can process the bar of different materials, different-diameter.For improving the dynamic characteristic of radial stroke governor motion, the fine setting worm gear has adopted hollow out wall type structure, thereby has reduced the quality and the rotary inertia of fine setting worm gear effectively.Wherein, adopted split type fine setting worm and gear structure,, reduced cost, be very easy to the installation, maintenance of machinery, and guaranteed the security and the self-locking performance of blanking machine by changing different fine setting worm-gear toothing pieces.
At diameter
10mm～
The bar of 55mm, draw ratio 0.2～10 adopts the sleeve fixed structure, thereby increases the sleeve arm of force, finishes the bar blanking.
Description of drawings
Fig. 1 is of the present invention radially the forging towards the precision blanking machine structure chart.Wherein, figure (a) is that front view, figure (b) are that side sectional view, the figure (c) of figure (a) is the profile of A-A of figure (b), and figure (d) is the side view of figure (a).
Label among the figure is represented respectively: 1, main motor, 2, driving pulley, 3, driving-belt, 4, driven pulley, 5, transmission main shaft, 6, locking nut, 7, connecting key, 8, regulating sleeve, 9, the main shaft fixed cover, 10, backing plate, 11, the blanking sleeve, 12, the bar fixed cover, 13, the polyurethane cushion cover, 14, the bar fixed support, 15, the fine setting worm gear, 16, fuselage, 17, fine setting worm gear retainer ring, 18, the bar fixing hole, 19, regulating rod, 20, the fine setting support, 21, the tup feed cam, 22, sector tooth block, 23, worm screw, 24, the fine setting motor, 25, the blanking mould, 26, hammer lever.
The present invention is described in further detail below in conjunction with drawings and Examples.
The specific embodiment
Asymmetric radial welding punched high performance precision blanking machine of the present invention, its structure as shown in Figure 1.This blanking system mainly partly, is radially forged critical pieces such as sweeping away material part, stroke fine setting part, bar fixed support part by transmission system and is constituted.Described in detail with regard to above-mentioned four parts respectively below.
The transmission mechanism part of this invention blanking machine mainly is made of parts such as main motor 1, driving pulley 2, driving-belt 3, driven pulley 4, transmission main shaft 5, locking nut 6, connecting key 7, regulating sleeve 8 and main shaft fixed covers 9.
Main motor 1 drives driving pulley 2 rotations that key is connected in motor transmission shaft, drives driven pulleys 4 by driving-belt 3 and rotates, and the gearratio of transmission mechanism is 5:1.
Main motor 1 is an AC induction motor.Driving-belt 3 is the V-type driving-belt.Transmission main shaft 5 cooperates with the inner ring of right-hand member self-aligning bearing by the right-hand member step, and this bearing outer ring cooperates with main shaft fixed cover 9 inwall raised step faces, and the left end of transmission main shaft 5 is fixing by locking nut 6, thereby defines moving axially of transmission main shaft 5.By regulating sleeve 8 guarantee driving pulley 2 and driven pulley 4 in vertical direction to neutrality, guarantee the band transmission stability.The drive path of blanking machine is as follows:
Main motor 1 drives driving pulley 2, and driving pulley 2 is that the V-type band links to each other with driven pulley 4 by driving-belt 3, and driven pulley 4 links to each other with transmission main shaft by key.
The radially forging of this invention blanking machine sweeps away material and the stroke fine tuning structure is made of backing plate 10, fine setting worm gear 15, fine setting worm gear retainer ring 17, regulating rod 19, fine setting support 20, tup feed cam 21, sector tooth block 22, worm screw 23, parts such as fine setting motor 24, blanking mould 25 and hammer lever 26.
The radial stroke micro-adjusting mechanism is shown in figure (c).Because in the blanking process, fine setting worm gear rotation direction and speed will constantly change apace, therefore require the fine setting worm gear to have less quality and rotary inertia.For this reason, fine setting fine setting worm gear 15 adopts hollow out formula thin-wall construction, cooperates with regulating rod 19 by inner chute, and drives its motion.Fine setting worm gear retainer ring 17 is fixedlyed connected with fuselage 16, and fine setting worm gear 15 can rotate freely in fine setting worm gear retainer ring 17.Regulating rod 19 and tup feed cam 21 are fixedly connected on the fine setting support 20.Fine setting support 20 cooperates by interporal lacuna and is connected with fuselage 16, and can rotate freely around its central axis.Fine setting worm gear 15 and sector tooth block 22 are realized being located by connecting by 4 bolts and 2 alignment pins, and sector tooth block 22 is meshing with each other with worm screw 23.Consider wearing and tearing and the convenience of safeguarding, adopt the divisional design of hammer lever 26 and blanking mould 25, they by mounted in pairs in the sliding tray of transmission main shaft 5.Hammer lever 26 promotes radially motion of blanking mould 25 under the effect of tup feed shaft, apply radial load constantly for the bar that is fixed on bar central hole 18.In the present invention, adopt the design of 7 feed cams of 4 tups, can realize the evenly radial loaded continuously of single-revolution 28 times.
In the blanking process, transmission main shaft 5 rotation under main motor 1 drives.Blanking mould 25 and hammer lever 26 be radially motion in the axle head sliding tray of transmission main shaft 5.Because the constraint of the radial stroke of tup feed shaft, make blanking mould CYCLIC LOADING radially constantly to sweep away material thereby finish radially to forge.In the radial stroke trim process, fine setting motor 24 drives fine setting worm screw 23 and rotates, and forces 15 rotations of fine setting fine setting worm gear.Fine setting fine setting worm gear 15 drives regulating rod 19 motions by inner chute, and and then drive of the axial line rotation of tup feed shaft around fine setting support 20, thereby finish the radially adjusting of depression stroke.Wherein, fine setting motor 24 is a servomotor, realizes accurately rotatablely moving of this motor by computer control system.For convenient lubricated, fine setting worm gear retainer ring 17 has logical oil groove in vertical direction.
The bar fixture of this invention blanking machine comprises parts such as blanking sleeve 11, bar fixed muffle 12, polyurethane cushion cover 13 and bar fixed support 14.Bar fixed support 14 is fixed on the fuselage 16 by the bolt connection.Bar fixed cover 12 is connected with bar support 14 by interference fits, and it can be changed according to the bar diameter.The right-hand member of blanking sleeve 11 forms with fuselage 16 by polyurethane cushion cover 13 and cooperates, and left end contacts with blanking mould 25.In the blanking process, bar one end is installed in the endoporus of bar fixed cover 12, and an other end is inserted in the blanking sleeve 11.Under the acting in conjunction of blanking mould 25 and bar fixed cover 12, finish bar and radially forge the material process that sweeps away like this.
Adopt of the present invention radially the forging towards blanking machine, adopt the design of tup cycloid, cam adopts the cylindrical roller structure, advantages such as having and do not have impact, motion feature is steady.Fine setting worm and gear stroke control mechanism adopts split fine setting worm-gear toothing block structure, can effectively improve the kinematics characteristic of stroke control mechanism.By servomotor frequency control function, can carry out precise blanking at the bar of different materials, different size.
When carrying out blanking, the bar centering is static, in the plane of vertical bar axis, evenly arranging and be embedded in spindle nose gathering sill also interior and rotating together 4 tups of main shaft and actionless 7 hammer levers, each like this have only a tup in running order in, guaranteed that bar only has bending in one direction, can not interfere between the different tups.By radially depressing of hammer lever, produce the fatigue load of bar.Radially drafts by cam mechanism governor weight head rod.Main shaft drives tup and slide block rotates, and does not forge towards hour hammer head rest centrifugal force and throws away, and the work slide block is depressed bar after running into tup feeding cylinder, depresses the cam curve decision of process by slider head.Rationally cams distributed and hammer lever can be realized the circumferentially tired uniformly loading of bar, thereby impel the stable expansion of micro-crack, guarantee cross section quality.
The major technique characteristics of this blanking machine are as follows: the complete circumferentially CYCLIC LOADING of 4 tups, 7 rollers, realize the tired blanking of 28 radial loaded of single-revolution; The fine setting worm and gear transmission system that radial stroke is adjustable can be processed the bar of different materials, different-diameter; Adopt tube-in-tube structure, can realize short and thick bar blanking.This blanking machine major technology index: maximum radial acceleration 3.5m/s2, maximum inertia force 12N, controllable radial stroke range 0～4mm, the rotational travel scope of fine setting worm and gear is 0～11 °.Bar blanking diameter
Dutycycle 0.5 in the draw ratio 0.2～10 of blanking bar, the blanking process.
Claims (5)
1. asymmetric radial welding punched high performance precision blanking machine, this blanking machine comprise transmission mechanism at least, radially forge and sweep away material and stroke fine tuning structure and bar fixture, it is characterized in that:
Described transmission mechanism mainly is made of main motor (1), driving pulley (2), driving-belt (3), driven pulley (4), transmission main shaft (5), locking nut (6), connecting key (7), regulating sleeve (8) and main shaft fixed cover (9), main motor (1) drives driving pulley (2) rotation that key is connected in motor transmission shaft, drive driven pulley (4) and transmission main shaft (5) rotation by driving-belt (3), the gearratio of transmission mechanism is 5:1;
Driven pulley (4) is connected on the transmission main shaft (5) by connecting key (7), transmission main shaft (5) is connected with main shaft fixed cover (9) by the aligning roller bearing, main shaft fixed cover (9) is fixing with fuselage (16) welding, and blanking mould (25) and hammer lever (26) are rotated under transmission main shaft (5) drives;
Described radially the forging sweeps away material and stroke fine tuning structure by backing plate (10), fine setting worm gear (15), fine setting worm gear retainer ring (17), regulating rod (19), fine setting support (20), tup feed cam (21), sector tooth block (22), worm screw (23), fine setting motor (24), blanking mould (25) and hammer lever (26) formation; Fine setting worm gear (15) cooperates with regulating rod (19) by inner chute, and drives its motion; Fine setting worm gear retainer ring (17) is fixedlyed connected with fuselage (16), and fine setting worm gear (15) can rotate freely in fine setting worm gear retainer ring (17), and regulating rod (19) and tup feed cam (21) are fixedly connected on the fine setting support (20);
Fine setting worm gear (15) and sector tooth block (22) are realized being located by connecting by bolt and alignment pin, and sector tooth block (22) is meshing with each other with worm screw (23); In the sliding tray of transmission main shaft (5), hammer lever (26) promotes blanking mould (25) and radially moves under tup feed cam (21) effect by mounted in pairs for hammer lever (26) and blanking mould (25);
Described bar fixture comprises blanking sleeve (11), bar fixed muffle (12), polyurethane cushion cover (13) and bar fixed support (14), and bar fixed support (14) is fixed on the fuselage (16) by the bolt connection; Bar fixed muffle (12) is connected with bar support (14) by interference fits, and an end of blanking sleeve (11) forms with fuselage (16) by polyurethane cushion cover (13) and cooperates, and the other end contacts with blanking mould (25),
In the blanking process, bar one end is installed in the endoporus of bar fixed muffle (12), and an other end inserts in the blanking sleeve (11), under the acting in conjunction of blanking mould (25) and bar fixed muffle (12), finishes bar and radially forges the material process that sweeps away.
2. asymmetric radial welding punched high performance precision blanking machine as claimed in claim 1 is characterized in that, described fine setting worm gear (15) adopts hollow out formula thin-wall construction.
3. asymmetric radial welding punched high performance precision blanking machine as claimed in claim 1 is characterized in that, described fine setting worm gear retainer ring (17) has logical oil groove in vertical direction.
4. asymmetric radial welding punched high performance precision blanking machine as claimed in claim 1, it is characterized in that, described fine setting motor (24) drives worm screw (23) and rotates, and force fine setting worm gear (15) to rotate, fine setting worm gear (15) drives regulating rod (19) motion by inner chute, and and then drive the axial line rotation of tup feed cam (21) around fine setting support (20), thereby finish the radially adjusting of depression stroke.
5. asymmetric radial welding punched high performance precision blanking machine as claimed in claim 1 is characterized in that, described fine setting motor (24) is a servomotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100180004A CN100467159C (en) | 2007-06-05 | 2007-06-05 | Unsymmetrical radial welding punched high performance precision blanking machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100180004A CN100467159C (en) | 2007-06-05 | 2007-06-05 | Unsymmetrical radial welding punched high performance precision blanking machine |
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| CN101058110A CN101058110A (en) | 2007-10-24 |
| CN100467159C true CN100467159C (en) | 2009-03-11 |
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| CNB2007100180004A Expired - Fee Related CN100467159C (en) | 2007-06-05 | 2007-06-05 | Unsymmetrical radial welding punched high performance precision blanking machine |
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| CN102601208A (en) * | 2012-02-23 | 2012-07-25 | 西安交通大学 | Eccentric sleeve high-speed rotating type bar and tube precision blanking machine |
| CN103028785B (en) * | 2012-12-07 | 2014-11-05 | 西安交通大学 | Hydraulic controllable reciprocating rotary rod tube precise blanking machine |
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| CN104325055B (en) * | 2014-09-03 | 2016-04-13 | 西安交通大学 | A kind of fluid pressure type radial forging machine of mechanical trip adjustment of AC servo machinery driving |
| CN104493034B (en) * | 2014-10-31 | 2016-02-24 | 西安交通大学 | The radial asymmetrical blanking device that a kind of liquefied natural gas drives |
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| CN110947819B (en) * | 2018-09-27 | 2020-12-15 | 西安交通大学 | Eccentric displacement adjustable bar material rotary blanking system |
| CN109570433B (en) * | 2018-10-19 | 2020-06-26 | 西安理工大学 | Rod pipe fatigue fracture blanking machine with real-time adjustable radial loading displacement |
| CN110014072B (en) * | 2019-04-18 | 2020-03-24 | 中国石油大学(华东) | Efficient and precise low-stress blanking method for radial breaking |
| CN110539036B (en) * | 2019-09-12 | 2020-07-07 | 西安科技大学 | Cam high-speed impact type metal bar pipe material low-stress impact rotary bending cracking blanking device |
| CN112387606B (en) * | 2020-10-15 | 2022-09-20 | 西安工程大学 | Pearl sorting system |
| CN112588937B (en) * | 2020-12-03 | 2022-07-26 | 中国石油大学(华东) | Low-stress blanking die and method in pure rolling contact with bar stock |
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