CN101786125A - Production equipment of thin-wall metal cylinder body - Google Patents
Production equipment of thin-wall metal cylinder body Download PDFInfo
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- CN101786125A CN101786125A CN 201010132375 CN201010132375A CN101786125A CN 101786125 A CN101786125 A CN 101786125A CN 201010132375 CN201010132375 CN 201010132375 CN 201010132375 A CN201010132375 A CN 201010132375A CN 101786125 A CN101786125 A CN 101786125A
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Abstract
The invention discloses production equipment of a thin-wall metal cylinder body. The equipment comprises a stand, and the stand is sequentially provided with a mandrel, a rotating and pressing part and a smoothing stamp die from one end to the other end, wherein the rotating and pressing part rotates around the mandrel, and the mandrel is in a slide match with the rotating and pressing part and the smoothing stamp die; the mandrel is internally provided with a loopback channel extending to a working end of the mandrel, and the loopback channel is connected with a cooling medium supply device; and the smoothing stamp die is internally provided with a heating element. After adopting the technical scheme, a thin-wall metal cylinder prefabricated product is firstly produced by utilizing rotating and pressing processing, and then through differential temperature drawing and smoothing, spiral fringes on the surface of the thin-wall metal cylinder are removed; meanwhile, the straightness and the wall thickness of the product can be renewedly revised; and in the differential temperature drawing and smoothing process, the mandrel is cooled, and the smoothing stamp die is heated, which can effectively suppress the martensite phase transformation caused by the smoothing and improve the plasticity of metal materials.
Description
Technical field:
The present invention relates to a kind of production equipment of thin-wall metal cylinder body.
Background technology:
Usually, as the roller of blooming manufacturing, nano impression, big miniature electric imaging formula printer usefulness, high accuracy printing, use wall thickness is polystyrene film, the polyimide film manufacturing of 0.03～0.3mm scope more.Also have in addition, in nickel plating, electroplate, adopt from parent and extract the nickel electrocasting making of having separated out the electroform products of nickel metal at the cylindrical shape parent out.
The roller of such use, because in the operation of processing such as heating continuously, pressurize, cool off, peel off, use, thus wish to have good heat conductivity, hear resistance, in addition, because of using, so also need outstanding fatigue strength, rigidity as rotary body.
But if the resin material that adopts polystyrene, polyimides one class is during as roll body, the heat conductivity of roll body is poor, and adopts the nickel electoformed product as roll body, though its heat conductivity is outstanding, can cause thermal embrittlement under the temperature more than 200 ℃.So in the PRN device industry, the roll body that adopts above-mentioned two kinds of materials to make is withdrawn from the market gradually, the substitute is the roll body that adopts thin-wall metal cylinder body to make.
And for thin-wall metal cylinder body, traditional process equipment is to adopt the rotary pressing processing machine, in the rotary pressing processing, clad material of aluminium, stainless steel, nickel, titanium, copper or stainless steel and copper etc. as material, utilize the spinning parts when mandrel rotates, to do axis and move the realization plastic working, adopt this thin-wall metal cylinder body to can be made into the roller that performance has the outstanding hot spiral property led of metal, hear resistance, fatigue strength, rigidity.But still there is significant disadvantages in this processing mode, the thin-wall metal cylinder body that makes through rotary pressing processing can produce a large amount of barber-pole stripes in its surface, have a strong impact on the surface smoothness of thin-wall metal cylinder body, the product of this quality does not meet the high surface smoothness requirement of PRN device.And for processing thickness had only cylinder below the 0.1mm, the linearity of the product that processes was relatively poor, and wall unevenness is even.
Summary of the invention:
The objective of the invention is provides a kind of production equipment of producing the high-quality thin-wall metal cylinder body in order to overcome the shortcoming of above-mentioned prior art.
For achieving the above object, technical scheme provided by the invention is: the production equipment of thin-wall metal cylinder body, include frame, be provided with mandrel, spinning parts successively and smooth out with the fingers the processing punch die from an end to the other end of frame, the spinning parts rotate around mandrel, mandrel and spinning parts with smooth out with the fingers the processing punch die and become to be slidingly matched, be processed with the loopback passage that extends to the mandrel working end in the mandrel, the loopback passage is connected with the cooling medium feeding mechanism, smoothes out with the fingers in the processing punch die heating element heater is set.
The modular angle degree of going into of smoothing out with the fingers the processing punch die is 5 degree～9.5 degree.
The mandrel chilling temperature is controlled at-7 ℃～20 ℃, to smooth out with the fingers processing punch die heating and temperature control at 70 ℃～200 ℃.
Smoothing out with the fingers the process velocity that the processing punch die presses to mandrel is 10～1000mm/sec.
The periphery of the corresponding mandrel of spinning parts is with three of 120 arranged spaced of spending.
After adopting technique scheme, utilize rotary pressing processing to produce thin-wall metal cylinder prefabrication earlier, stretch through differential temperature again and smooth out with the fingers processing, the lip-deep barber-pole stripes of thin-wall metal cylinder body is removed, can be revised the linearity of product and wall thickness again simultaneously, differential temperature stretches and smoothes out with the fingers process, mandrel is cooled off, heat smoothing out with the fingers the processing punch die, can effectively suppress to improve the plasticity of metal material because of smoothing out with the fingers the martensite phase transformation that processing causes.
Description of drawings:
Fig. 1 is that rotary pressing processing equipment of the present invention is at the structural representation that carries out the rotary pressing processing process;
Fig. 2 is the structure chart of smoothing out with the fingers the processing punch die of rotary pressing processing equipment of the present invention;
Fig. 3 carries out differential temperature after the rotary pressing processing and smoothes out with the fingers the preceding schematic diagram of processing for rotary pressing processing equipment of the present invention finish;
Fig. 4 smoothes out with the fingers the structural representation that adds man-hour for rotary pressing processing equipment of the present invention carries out differential temperature;
Fig. 5 smoothes out with the fingers the structure chart of processing mold for tradition stretches again;
Fig. 6 is mechanical performance and the temperature dependent graph of a relation of test material SUS304;
Fig. 7 is the anisotropic graph of a relation of temperature and 0.2% endurance;
Fig. 8 is the schematic diagram of elementary stretch forming product wall thickness measuring position;
Fig. 9 is the elementary stretch forming product Thickness Distribution schematic diagram of corresponding measuring position shown in Figure 4;
Figure 10 has lured the schematic diagram of martensite variable for each sample processing of corresponding measuring position shown in Figure 4;
Figure 11 is for extensibility again is 60%, elementary extensibility is respectively 2.6 and 2.0 Thickness Distribution contrast figure;
Figure 12 is for extensibility again is 55%, elementary extensibility is respectively 2.6 and 2.0 Thickness Distribution contrast figure;
The processing that Figure 13 does after the annealing in process for elementary drawing and forming product has lured martensitic phase variable schematic diagram;
Figure 14 material is smoothed out with the fingers the schematic diagram of processing the martensitic phase variable that has lured because of stretching again;
Figure 15 is the graph of a relation of interior differential temperature pull and stretch processing temperature of high temperature range and stress.
The specific embodiment:
The production equipment of the thin-wall metal cylinder body of present embodiment, include the frame 1 of vertical placement, be provided with mandrel 2, spinning parts 3 successively and smooth out with the fingers processing punch die 4 from upper end to the lower end of frame 1, spinning parts 3 are around mandrel 2 rotations, spinning parts 3 with smooth out with the fingers processing punch die 4 can become to slide up and down along mandrel 2 axis, be processed with the loopback passage 5 that extends to mandrel working end 21 in the mandrel 2, loopback passage 5 is connected with cooling medium feeding mechanism (not expressing among the figure), smoothes out with the fingers in the processing punch die 4 heating element heater 6 is set.
As shown in Figure 2, smoothing out with the fingers the mould angle [alpha] of going into of processing punch die 4 is 5 degree～9.5 degree.It is bigger than 9.5 degree to go into the mould angle [alpha], can produce excessive shear strength to the thin slice cylinder, and disrumpent feelings.Diminish and go into the mould angle [alpha], big to the extruding force change of cylinder trunk, help preventing the disrumpent feelings of thin slice cylinder, but go into mould angle [alpha] less than 5 degree, because excessive, toast with thin slice cylinder contact area.And vertical power on the lathe surface works superfluously, and lathe is difficult to separate with cylinder.Even take place smoothing out with the fingers the elastic expansion of the circumferencial direction of processing punch die 4, THICKNESS CONTROL difficulty.
The periphery of spinning parts 3 corresponding mandrels 2 is with three of the arranged spaced of 120 degree, can parallel spinning parts 3 at the pressure of process to mandrel 2, prevent that mandrel 2 from bending.
Attention: smoothing out with the fingers the process velocity that processing punch die 4 presses to mandrel 2 is 10～1000mm/sec.Smoothing out with the fingers processing thickness is the following stainless steel cylinder of 0.1mm, and in the time of processing and forming, process velocity carries out comparatively suitable in the scope of 10～1000mm/sec.Process velocity surpasses 1000mm/sec, and the lubricant of supplying with drum surface is pure, toasts easily.In addition, the not enough 10mm/sec of process velocity owing to add the influence of vibration of the lathe in man-hour, be out of shape inhomogeneous, the axial thickness of the cylinder inequality that becomes.
Specific process is: put cylindric plain pipe 7 on mandrel 2, starting spinning parts 3 makes its rotation on one side on one side around mandrel 2 revolution, drive spinning parts 3 simultaneously and do ascending motion along mandrel 2 axis, in this process, 3 pairs of cylindric plain pipe 7 wall bodies of spinning parts carry out the spinning plastic working, as shown in Figure 1, after treating that 3 pairs of cylindric plain pipe 7 complete rotary pressing processing of spinning parts finish, spinning parts 3 rest on the top of cylindric plain pipe 7, then, start the cooling medium feeding mechanism and in the loopback passage 5 of mandrel 2, inject cooling medium, as shown in Figure 3, make mandrel 2 temperature remain on-7 ℃～20 ℃, and keep this state always, smooth out with the fingers heating element heater 6 heating powers in the processing punch die 4, be heated to 70 ℃～200 ℃ smoothing out with the fingers processing punch die 4, drive then and smooth out with the fingers processing punch die 4 and up move, cylindric plain pipe 7 after rotary pressing processing is entered with mandrel 2 smooth out with the fingers processing punch die 4, the realization differential temperature is smoothed out with the fingers processing, as shown in Figure 4, take out workpiece after finishing, spinning parts 3 with smooth out with the fingers processing punch die 4 and drop to original position.
Introduce the differential temperature process technology in detail below by experimental data.
Continuous multi-stage is smoothed out with the fingers processing and has been stretched directly again and to stretch and reversely stretch two kinds again, here explain directly to be stretched as example again, make mould as shown in Figure 5, this mould includes drift 10, punch die 20 and flanging 30, be provided with liquid cooling passage 40 in the drift 10, and be provided with heating element heater 50 in the punch die 20, the mandrel shoulder radius of mould is 3mm, punch die shoulder radius is 4mm, and extensibility (axle diameter that stretches again/elementary axle diameter * 100) is 80,70,65,60,55,50 and 45% again.Extensibility represents that numerical value is more little again, and the moulding difficulty of making not only narrow but also dark tubing is high more.
Test material
Test material uses SUS304 (nominal plate thickness 0.8mm).The extension test of test material is mutually 0 degree by adopting with rolling direction, and the 13B test film of the JISZ2201 of 45 degree and 90 degree directions utilizes accurate omnipotent test machine to test.Test condition is, initial stage crossbeam speed 3mm/min, and deformation is 10mm/min below 5%.Probe temperature is 20 ℃, 100 ℃, and 150 ℃.
Mechanical performance and temperature dependency are as shown in Figure 6.Hot strength under 150 ℃ reduces about 40% with 20 ℃ compare.0.2% endurance reduces 25% approximately.And elongation at break reduces about 40%.The anisotropy of 0.2% endurance as shown in Figure 7.Fig. 7 shows that this studies employed SUS304, the anisotropy when being in 45 degree directions with rolling direction a little less than.
Stretch and smooth out with the fingers the elementary drawing and forming product that use in the processing, axle diameter φ 60mm, draw ratio (initial stage blank diameter/elementary stretching axle diameter) are 2.0,2.4 and 2.6 3 kind.The condition of molding of elementary stretching is as shown in table 1.
The elementary drawing and forming condition of table 1
Method of testing
Stretch and smooth out with the fingers in the processing test, the mould that the cylinder that trial-production is come out stretches is again estimated, and investigates the martensitic phase variable that its processing has lured, and the thickness of slab of formed products and formed products quality.Formability is estimated by the feasible extensibility again that crack-free is shaped.
Test condition is that pressure-pad-force is 10kN, and the temperature of punch die and flanging is 70～200 ℃, and the mandrel temperature is-7～20 ℃.After lubricant is elementary stretching, to the outside water-soluble punching press of coating (press) work oil in the formed products.Testing arrangement uses the moulding processing test machine of oil pressure.The martensitic phase variable that processing has lured, utilization Ferrite Scope analyzer is measured.
Test result
The wall thickness measuring position of elementary stretch forming product (draw ratio 2.6) as shown in Figure 8, Thickness Distribution is as shown in Figure 9.
As we can see from the figure, the thickness of slab of mandrel head has reduced.And because the anisotropic character of test material, so near the difference of the thickness of slab of the circumferencial direction mandrel shoulder and the flange is bigger.It is among 2.0 and 2.4 the formed products that this problem is present in draw ratio too.
The martensitic phase variable that the processing of each formed products has lured as shown in figure 10.
Show as a comparison the result of shaping formed products under room temperature (30 ℃) among the figure.The formed products that differential temperature stretches is that its mandrel will cool off.Also can reduce the limit thickness of slab of mandrel shoulder, so the martensitic phase variable that has lured because of processing on the mandrel shoulder, about 8% in the draw ratio 2.6, about 1% measured comes out in the draw ratio 2.0.But what can confirm is, is shaped with room temperature and compares, and differential temperature stretch forming product can suppress phase variable significantly.As Figure 10, any one is shaped, and the martensitic phase variable of their mandrel shoulder has all increased, but sidewall sections is shown as 0 mostly.
Stretch again and smooth out with the fingers processing forming
Stretching, it is as shown in table 2 to smooth out with the fingers the processing test result again, is that limit extensibility again is 80% under 30 ℃ the situation in punch die flanging and mandrel temperature.Relative therewith, because raise punch die and flanging temperature, so the limit that is shaped has also improved.And when the punch die temperature is 120 ℃, the flanging temperature is 80 ℃, and when the mandrel temperature was 20 ℃, limit extensibility again brought up to 60%.Moreover when punch die and flanging temperature are 200 ℃, when the mandrel temperature was-7 ℃, limit extensibility again became 55%.Learn thus, stretch again and smooth out with the fingers processing forming and depend on the forming temperature condition.In addition, the condition of this test is not subjected to the influence of elementary draw ratio.
Table 2 stretches and smoothes out with the fingers the processing test result
Smooth out with the fingers in the process of processing stretching again, to cause the mandrel shoulder to break because of exceedingly reducing thickness of slab.In order to improve the intensity of crackly mandrel shoulder, the cooling of mandrel shoulder is very important.In addition, the temperature of punch die and flanging can have influence on the flow resistance of material.Therefore, for improving the moulding limit, higher punch die is set and the flanging temperature is an effective method.Differential temperature stretch process method can help stretching again and smooth out with the fingers processing, and to produce extensibility be 55% again, and the profile ratio is the very dark formed products of 3.3 (forming height/(axle diameters that stretch again+sheet material wall thickness * 2)).
Stretch again and smooth out with the fingers the quality of processing back finished product
Again extensibility be 60% Thickness Distribution as shown in figure 11.Stretch and smooth out with the fingers after the processing, the wall thickness of mandrel shoulder presents the reduction of locality.And, in the elementary drawing process, present the mandrel shoulder that locality sheet material wall thickness reduces, with shown position unanimity among the figure.But the wall thickness change of this part is little.
We think that this phenomenon is subject to processing the sclerosis influence.Draw by above, elementary drawing process, the minimizing of mandrel shoulder sheet material wall thickness can not produce big influence to the moulding limit of smoothing out with the fingers processing that stretches again.
After stretching, draw ratio is that 2.6 sidewall Thickness Distribution is even again.In the elementary drawing process, draw ratio is that the wall thickness of 2.6 mandrel head has reduced a lot, so differ bigger with the sidewall wall thickness.Learn that thus the Thickness Distribution of elementary stretching can have influence on the product quality through stretching again after smoothing out with the fingers processing.
Again extensibility be the martensitic phase variable that lured of 55% processing as shown in figure 12.
Draw ratio is that 2.0 mandrel shoulder phase variable is about 5%, draw ratio be 2.6 be 7-17%.The reason that produces this variation is punch die temperature and flanging temperature instability, must will examine heater or the like.In addition, the martensitic phase variable maximum of the shown sample 3 of Figure 12 is 7%.The martensitic phase variable of processing relevant with cracking (it is generally acknowledged that 10% above martensitic phase variable is cracking danger line 2).Learn thus,, taked the method for equilibrium temperature condition, can omit the operation of final annealing to a great extent at the problem of cracking.
Reducing stretches again smoothes out with the fingers the method for processing temperature
Before this, smooth out with the fingers the research of machine-shaping, can hold the relation of forming temperature and mouldability through differential temperature is stretched again.If punch die and flanging temperature have raise, mouldability also can improve, thereby obtains 55% limit extensibility again.Yet, must follow punch die the temperature of flanging to be set in 200 ℃, but also wish simultaneously aspect practical, to realize low temperatureization.Smooth out with the fingers the forming temperature of processing in order to attempt reducing stretching, the martensitic phase variable that has carried out having lured about processing after the elementary stretching brings the research of influence for forming temperature and mouldability again.
Also carry out the differential temperature stretch process during elementary stretching, the finished product after the moulding (draw ratio 2.0) is annealed.Figure 13 shows the martensitic phase variable that the processing after the annealing has lured.After the annealed processing of martensitic phase variable that processing has lured, become 0%.
Same, be draw ratio that 2.4 and 2.6 moulding product are annealed, stretching then, it is as shown in table 3 to smooth out with the fingers the result that processing tests again.
Table 3 is drawing and forming (annealing back) again
Draw ratio is that 2.0 extensibility again is 45%, draw ratio be 2.4 and 2.6 all be 50%.In addition, be just can moulding under 150 ℃ the state in the temperature of punch die and flanging.The martensitic phase variable that lured of processing is to mouldability and the influence that brings of draft temperature condition is as shown in figure 14 again.
Above-mentioned draw ratio is 2.0, directly carries out differential temperature without annealing in process and stretches when smoothing out with the fingers processing, and it is 0.5% that the processing of mandrel bottom has lured the martensitic phase variable, the mandrel shoulder be 0.74%.And limit extensibility again is 55%, and punch die must be 200 ℃ with the flanging temperature.On the contrary, annealed processing can improve the moulding limit, reduces forming temperature.Learn that thus the martensitic phase variable that lured of processing has relation with the temperature conditions of smoothing out with the fingers processing forming and stretching again that stretches again, the processing that can suppress after the elementary stretching has lured the martensitic phase variable, having reduced the temperature that processing is smoothed out with the fingers in stretching more effectively.
Differential temperature stretch process method by adding hot die and flanging, reduces the flow resistance of material.Improve crackly mandrel shoulder intensity by the mandrel cooling, thereby improve the moulding limit.This temperature range is exactly that hot strength changes 0-100 ℃ maximum scope.So the hot strength of stainless steel SUS304 even be in the said temperature scope, is also tended to along with the rising of temperature reduce gradually.And because in the temperature range more than 90 ℃, can not produce the martensitic phase variable, so in order in elementary stretching, to suppress the martensitic phase variable, the temperature of mandrel is set to 80 ℃, and punch die and flanging temperature are 22 ℃, attempts utilizing the temperature difference of high-temperature scope to carry out drawing and forming.This way as shown in figure 15.Condition of molding is as shown in table 4, and the result is as shown in table 5.When processing in this temperature range, have the maximum mandrel shoulder of martensitic phase variable that processing has lured originally, its phase variable reduces to 0%.
The elementary drawing and forming condition of table 4
The processing of the mandrel shoulder of the elementary drawing and forming product of table 5 has lured the martensitic phase variable
| The punch die temperature | ??100℃ | ??220℃ |
| The flanging temperature | ??100℃ | ??220℃ |
| The mandrel temperature | ??0℃ | ??80℃ |
| Phase variable | ??1.4％ | ??0％ |
Under this temperature conditions, do not carry out extension test again.But the sample with annealed processing is the same, and hope can improve formability and reduce draft temperature again.On the mould engineering, hope can the low temperature processing stretching process again of difficult control temperature, and the method for the 1st grade of single stretching process of high temperature processing, as the stronger method of practicality in the mould engineering.
The present invention stretches and smoothes out with the fingers processing the cylindric pipe of moulding, and has the following advantages:
(1), carried out differential temperature stretch forming test again in order to use the differential temperature stretching technique to reach the purpose that shortens operation.The limit under room temperature state extensibility again is 80%, and is relative therewith, and differential temperature extensibility again is 55%.The result shows, can cut down 3 operations that comprise annealing operation.
(2) result shows, can smooth out with the fingers the martensitic phase variable that processing has lured after the machine-shaping stretching again and be suppressed at below 10%, and can omit the later annealing operation of 3rd level stretching.
(3) because stretching is smoothed out with the fingers in the manufacturing of processing mold again, be difficult to the temperature of control mould, reduce draft temperature method again so studied.Obtained the martensitic phase variable that the processing the same with the sample of competing to seize annealing in process has lured by improving elementary draft temperature compared with the past.The result shows, can reduce stretches again smoothes out with the fingers forming temperature in the manufacturing procedure.
The above; only for the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (5)
1. the production equipment of thin-wall metal cylinder body, include frame (1), it is characterized in that: be provided with mandrel (2), spinning parts (3) successively and smooth out with the fingers processing punch die (4) from an end to the other end of frame (1), spinning parts (3) rotate around mandrel (2), mandrel (2) and spinning parts (3) with smooth out with the fingers processing punch die (4) and become to be slidingly matched, be processed with the loopback passage (5) that extends to mandrel working end (21) in the mandrel (2), loopback passage (5) is connected with the cooling medium feeding mechanism, smoothes out with the fingers in the processing punch die (4) heating element heater (6) is set.
2. the production equipment of thin-wall metal cylinder body according to claim 1 is characterized in that: the modular angle degree of going into of smoothing out with the fingers processing punch die (4) is 5 degree～9.5 degree.
3. the production equipment of thin-wall metal cylinder body according to claim 1 is characterized in that: mandrel (2) chilling temperature is controlled at-7 ℃～20 ℃, to the heating and temperature control of smoothing out with the fingers processing punch die (4) at 70 ℃～200 ℃.
4. the production equipment of thin-wall metal cylinder body according to claim 1 is characterized in that: smoothing out with the fingers processing punch die (4), to press to the process velocity of mandrel (2) be 10～1000mm/sec.
5. the production equipment of thin-wall metal cylinder body according to claim 1 is characterized in that: the periphery of the corresponding mandrels of spinning parts (3) (2) is with three of the arranged spaced of 120 degree.
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| CN102489627A (en) * | 2011-12-07 | 2012-06-13 | 佛山市埃申特科技有限公司 | Method for manufacturing printing fuser film pipe |
| CN102489579A (en) * | 2011-12-07 | 2012-06-13 | 佛山市埃申特科技有限公司 | Production device for printing fuser film tube |
| CN102489576A (en) * | 2011-12-05 | 2012-06-13 | 中国航天科技集团公司长征机械厂 | Method for manufacturing high-precision rotor housings |
| CN103447329A (en) * | 2013-04-17 | 2013-12-18 | 天津世耀安防科技有限公司 | Rotary extrusion precision drawing machine |
| CN104525673A (en) * | 2014-11-19 | 2015-04-22 | 宁波市普力升工贸有限公司 | Warm drawing process of 304 stainless steel drawn workpiece |
| CN107774778A (en) * | 2016-08-31 | 2018-03-09 | 江苏凤凰木业有限公司 | A kind of thinning device for exerting of cylindrical part |
| CN115608837A (en) * | 2022-12-16 | 2023-01-17 | 潍坊工程职业学院 | Stamping and drawing equipment for processing thin-wall parts |
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| CN102489576A (en) * | 2011-12-05 | 2012-06-13 | 中国航天科技集团公司长征机械厂 | Method for manufacturing high-precision rotor housings |
| CN102489627A (en) * | 2011-12-07 | 2012-06-13 | 佛山市埃申特科技有限公司 | Method for manufacturing printing fuser film pipe |
| CN102489579A (en) * | 2011-12-07 | 2012-06-13 | 佛山市埃申特科技有限公司 | Production device for printing fuser film tube |
| CN103447329A (en) * | 2013-04-17 | 2013-12-18 | 天津世耀安防科技有限公司 | Rotary extrusion precision drawing machine |
| CN103447329B (en) * | 2013-04-17 | 2015-04-22 | 天津世耀安防科技有限公司 | Rotary extrusion precision drawing machine |
| CN104525673A (en) * | 2014-11-19 | 2015-04-22 | 宁波市普力升工贸有限公司 | Warm drawing process of 304 stainless steel drawn workpiece |
| CN107774778A (en) * | 2016-08-31 | 2018-03-09 | 江苏凤凰木业有限公司 | A kind of thinning device for exerting of cylindrical part |
| CN115608837A (en) * | 2022-12-16 | 2023-01-17 | 潍坊工程职业学院 | Stamping and drawing equipment for processing thin-wall parts |
| CN115608837B (en) * | 2022-12-16 | 2023-03-07 | 潍坊工程职业学院 | Stamping and deep-drawing equipment for processing thin-wall parts |
| CN116944324A (en) * | 2023-09-20 | 2023-10-27 | 苏州军精鑫精密科技有限公司 | Spinning device for processing metal cylindrical part |
| CN116944324B (en) * | 2023-09-20 | 2023-11-28 | 苏州军精鑫精密科技有限公司 | Spinning device for processing metal cylindrical part |
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