CN201040290Y - Vibration drawing system for accurate seamless steel pipe - Google Patents
Vibration drawing system for accurate seamless steel pipe Download PDFInfo
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- CN201040290Y CN201040290Y CNU2007200958389U CN200720095838U CN201040290Y CN 201040290 Y CN201040290 Y CN 201040290Y CN U2007200958389 U CNU2007200958389 U CN U2007200958389U CN 200720095838 U CN200720095838 U CN 200720095838U CN 201040290 Y CN201040290 Y CN 201040290Y
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- crystal driver
- vibration
- piezo
- electric crystal
- seamless steel
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Abstract
The utility model discloses a vibration drawing system of precise seamless steel tube, aiming at providing a drawing system which can reduce the deformation resistance of metal material, thus decreases the processing difficulty, improves the drawing quality of the product, and improves the production efficiency. An axial vibrating mechanism is connected between the machine body and the main hydraulic cylinder of the cold drawing clamping device, the vibrating mechanism consists of a piezoelectric crystal driver, a spring gasket, and a piezoelectric crystal driver fixing frame, the piezoelectric crystal driver is successively connected with the vibration controller and the power of the piezoelectric crystal driver. In the drawing system of the utility model, the deformation resistance of the material is greatly decreased by the vibration drawing; the static yielding stress is reduced, thus enhancing the processing characteristics of the material, improving the processing quality of the product. Meanwhile, the friction is decreased, the deformation stress of the material can be easily transferred to the central part of the metal uniformly, and the incentive energy of the dislocation motion within the material will be increased, which relieves the distortion of the material lattice, so the deformation of the material is uniform, the surface work-hardening is decreased.
Description
Technical field
The utility model relates to a kind of system of metal processing, in particular, relates to a kind of draw systems of precision seamless steel tubes.
Background technology
The traditional relatively metal cutting processing technology of accurate solid drawn tube technology has advantages such as efficient, energy-conservation, is mainly used in high accuracy seamless steel pipes such as producing hydraulic tube.This technology is according to metal extruding theory of plastic deformation, by clamp mechanism metal tube is applied axial tension, and under the extruding of interior outer mold, makes metal tube generation plastic deformation, to reach required size and surface quality.At present, adopt three formula jaws to clamp and hydraulic cylinder type drawing processing mode solid drawn tube more.In the process of drawing, because the metal material resistance of deformation is big, make pulling capacity excessive, axial tension generally all reaches more than hundreds of tons, and very high to the requirement of the stationarity of the reliability of clamp mechanism and pulling capacity, drawing speed is low, and production efficiency is low.And, because the circularity of seamless steel pipe, surface size (as wall thickness etc.) difference, the coefficient of friction difference when making drawing, cause the stressed inconsistent of seamless steel pipe different parts, material deformation is inhomogeneous, produces jutter through the seamless steel pipe surface of being everlasting, and influences the qualification rate of product.Particularly also need intermediate annealing process etc. for high rigidity, high strength and difficult moulding material, complex manufacturing, production efficiency is low.
The utility model content
The utility model is in order to overcome weak point of the prior art, to provide a kind of and can reduce the metal material deformation drag, thereby reduces difficulty of processing, improves product drawing crudy, the vibration draw systems of the precision seamless steel tubes of enhancing productivity.
The utility model is achieved through the following technical solutions:
A kind of vibration draw systems of precision seamless steel tubes, comprise cold-drawn clamp mechanism and main hydraulic cylinder, it is characterized in that, between the car body of cold-drawn clamp mechanism and main hydraulic cylinder, be connected with axial vibration mechanism, described axial vibration mechanism is by the piezo-electric crystal driver, spring shim and piezo-electric crystal driver fixed mount are formed, one end of described piezo-electric crystal driver and spring shim contacts, the other end of piezo-electric crystal driver and spring shim is connected with described piezo-electric crystal driver fixed mount respectively, and described piezo-electric crystal driver is connected with power supply successively with the vibrating controller of piezo-electric crystal driver.
Described piezo-electric crystal driver fixed mount is connected to form by 2 fixed disks and fixed muffle, and 2 fixed disks are connected with main hydraulic cylinder with car body respectively.
Described fixed muffle is provided with a plurality of louvres.
Described louvre is along the axial slotted hole of fixed muffle.
The utlity model has following technique effect:
In the draw systems of the present utility model, vibrational system of the common composition of the car body of piezo-electric crystal driver and spring shim, drawbench clamp mechanism and load, in this vibration drawing process, the vibration drawing reduces the material deformation drag greatly, static yield stress descends, improve the processing characteristics of material, improve the crudy of product.Simultaneously, the vibration drawing changes the coefficient of friction between mould and the seamless steel pipe, and frictional force reduces, and material deformation stress is evenly transmitted to the core of metal easily, and material internal is owing to be subjected to the effect of vibration wave, and the excitation energy of dislocation motion can increase.These factors have relaxed the distortion of material lattice, make material deformation even, have weakened the Surface Machining sclerosis.Thereby bring following advantage:
1. pulling capacity reduces: the average pulling capacity in vibration drawing processing significantly reduces, and reduces tensile force 10%～40%.
2. raising drawing speed: improve 2～10 times of drawing speeies.
3. the vibration drawing can improve the cross section compression ratio, and average energy reaches 0.4～1.2.
4. the vibration drawing can reduce the intermediate annealing number of times, has simplified technology, has improved productivity ratio.
5. owing to the friction that can reduce between mould and the metal, the use amount that can save lubricant.
Description of drawings
Fig. 1 is the schematic diagram of the vibration draw systems of the utility model precision seamless steel tubes;
Fig. 2 is the A-A cutaway view of vibrating mechanism part.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
For the schematic diagram of the vibration draw systems of the utility model precision seamless steel tubes as depicted in figs. 1 and 2, comprise cold-drawn clamp mechanism and main hydraulic cylinder, characteristics of the present utility model are to be connected with axial vibration mechanism between the car body 5 of existing cold-drawn clamp mechanism and main hydraulic cylinder 16, wherein axial vibration mechanism is by piezo-electric crystal driver 14, spring shim 15 and piezo-electric crystal driver fixed mount 21 are formed, one end of piezo-electric crystal driver and spring shim contacts, the other end of piezo-electric crystal driver and spring shim is connected with piezo-electric crystal driver fixed mount respectively, and described piezo-electric crystal driver is connected with power supply successively with the vibrating controller of piezo-electric crystal driver.Wherein piezo-electric crystal driver and its vibrating controller are that the model of NEC-Tokin company is the product of ASL680C801-P0.
In the present embodiment, piezo-electric crystal driver fixed mount 21 is connected to form by 2 fixed disks 19,22 and fixed muffle 20, fixed disk 19 is fixedlyed connected with car body 5, and fixed disk 22 is fixedlyed connected with main hydraulic cylinder 16, can adopt connected modes such as welding, bolt, riveted joint.Overheated in order to prevent piezo-electric crystal, fixed muffle is provided with a plurality of louvres 23.In order to reduce the rigidity of fixed muffle, louvre is along the axial slotted hole of fixed muffle.
The vibration draw systems of present embodiment is by external mold 1, internal mold 2, internal mold pull bar 3, workpiece 4, the car body 5 of cold-drawn clamp mechanism, jaw 6, tap web 7, briquetting 8, floating disc 9, limited block 10, guide pillar 11, axle 12, hydraulic cylinder 13, flange 17, round nut 17 and piezo-electric crystal driver 14, spring shim 15, main hydraulic cylinder 16 compositions such as grade, piezo-electric crystal driver and spring shim, vibrational system of the common composition of the car body of drawbench clamp mechanism and load, workpiece 4 is fixed on the jaw, the vibrating controller output frequency of piezo-electric crystal driver is the high-power sine voltage signal of f=15～80kHz, make the piezo-electric crystal driver obtain amplitude A=3～15um, dither along the generation of drawing direction, pass to the car body and the load of cold-drawn clamp mechanism through spring shim, make workpiece produce vibration, obtain and the diverse effect of common drawing.In the vibration drawing process, because the coefficient of friction between mould and the workpiece (seamless steel pipe) changes, frictional force reduces, simultaneously, material deformation stress evenly transmits to the core of metal easily, and material internal is owing to be subjected to action of ultrasonic waves, and the excitation energy of dislocation motion can increase.These factors have relaxed the distortion of material lattice, make material deformation even, have weakened the Surface Machining sclerosis.Therefore, vibration drawing processing can also solve some material and be difficult to process the problem that maybe can not carry out drawing, has improved suface processing quality simultaneously.
In vibration drawing processing, a vibrational system is formed in the car body of piezo-electric crystal driver, spring shim, drawbench clamp mechanism and load jointly, controls the vibration amplitude of car body by the vibration number of change controller output frequency Adjustment System response, with output current value.When system resonance, car body has peak swing, the energy needed minimum.If the vibration frequency of piezo-electric crystal driver departs from the system resonance frequency, the car body amplitude will reduce; For keeping amplitude stability, just must increase the output energy.Mainly by the equivalent mass of system and the geometry decision of seamless steel pipe, still, because the heating of system, resonance point has certain drift to the resonant frequency of resonator system; And the variation of load can cause that resonance ratio changes in a wider context.Especially when just beginning drawing, load variations is violent, causes resonance point to change significantly, can exceed when serious the piezo-electric crystal driver vibrating controller peak power output and stop oscillation phenomenon.Therefore, make the vibrating controller of piezo-electric crystal driver adjust vibration frequency automatically, it is remained operating near the resonance point, obtain peak swing, keep lasting, stable vibration drawing with least energy according to the load variations situation of system.
Although the disclosed vibration draw systems that relates to a kind of precision seamless steel tubes has been carried out special description with reference to embodiment, embodiment described above is illustrative and not restrictive, under the situation that does not break away from spirit and scope of the present utility model, all variations and modification are all within scope of the present utility model.
Claims (4)
1. the vibration draw systems of a precision seamless steel tubes, comprise cold-drawn clamp mechanism and main hydraulic cylinder, it is characterized in that, be connected with axial vibration mechanism between the car body of described cold-drawn clamp mechanism and the main hydraulic cylinder, described axial vibration mechanism is by the piezo-electric crystal driver, spring shim and piezo-electric crystal driver fixed mount are formed, one end of described piezo-electric crystal driver and spring shim contacts, the other end of piezo-electric crystal driver and spring shim is connected with described piezo-electric crystal driver fixed mount respectively, and described piezo-electric crystal driver is connected with power supply successively with the vibrating controller of piezo-electric crystal driver.
2. the vibration draw systems of precision seamless steel tubes according to claim 1 is characterized in that, described piezo-electric crystal driver fixed mount is connected to form by 2 fixed disks and fixed muffle, and 2 fixed disks are connected with main hydraulic cylinder with car body respectively.
3. the vibration draw systems of precision seamless steel tubes according to claim 2 is characterized in that, described fixed muffle is provided with a plurality of louvres.
4. the vibration draw systems of precision seamless steel tubes according to claim 3 is characterized in that, described louvre is along the axial slotted hole of fixed muffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200958389U CN201040290Y (en) | 2007-04-23 | 2007-04-23 | Vibration drawing system for accurate seamless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200958389U CN201040290Y (en) | 2007-04-23 | 2007-04-23 | Vibration drawing system for accurate seamless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201040290Y true CN201040290Y (en) | 2008-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200958389U Expired - Fee Related CN201040290Y (en) | 2007-04-23 | 2007-04-23 | Vibration drawing system for accurate seamless steel pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN201040290Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357545A (en) * | 2011-07-03 | 2012-02-22 | 胡顺珍 | Ultrasonic vibration-based tube drawing device |
| CN103624096A (en) * | 2013-11-22 | 2014-03-12 | 淮北安来机电装备有限公司 | Single dual-expansion-oil-cylinder-driven clamp of drawing machine |
| CN104454775A (en) * | 2014-11-04 | 2015-03-25 | 哈尔滨工业大学 | Two-end pretightened type low-frictional characteristic air cylinder with cylinder barrel bending vibration caused by piezoelectric stacks |
| CN106323868A (en) * | 2016-08-22 | 2017-01-11 | 水利部交通运输部国家能源局南京水利科学研究院 | Pullout test device of ribbed bar in earth-rock dam rockfill material and test method thereof |
| CN112620369A (en) * | 2020-12-01 | 2021-04-09 | 上海浦营金属科技有限公司 | Processing device for high-performance stainless steel seamless steel pipe |
-
2007
- 2007-04-23 CN CNU2007200958389U patent/CN201040290Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357545A (en) * | 2011-07-03 | 2012-02-22 | 胡顺珍 | Ultrasonic vibration-based tube drawing device |
| CN103624096A (en) * | 2013-11-22 | 2014-03-12 | 淮北安来机电装备有限公司 | Single dual-expansion-oil-cylinder-driven clamp of drawing machine |
| CN103624096B (en) * | 2013-11-22 | 2015-07-15 | 淮北安来机电装备有限公司 | Single dual-expansion-oil-cylinder-driven clamp of drawing machine |
| CN104454775A (en) * | 2014-11-04 | 2015-03-25 | 哈尔滨工业大学 | Two-end pretightened type low-frictional characteristic air cylinder with cylinder barrel bending vibration caused by piezoelectric stacks |
| CN104454775B (en) * | 2014-11-04 | 2016-06-08 | 哈尔滨工业大学 | Two ends prefastening piezoelectric pile causes the low frictional behavior cylinder of cylinder barrel bending vibration |
| CN106323868A (en) * | 2016-08-22 | 2017-01-11 | 水利部交通运输部国家能源局南京水利科学研究院 | Pullout test device of ribbed bar in earth-rock dam rockfill material and test method thereof |
| CN112620369A (en) * | 2020-12-01 | 2021-04-09 | 上海浦营金属科技有限公司 | Processing device for high-performance stainless steel seamless steel pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080326 Termination date: 20110423 |