CN109454303A - The Mobile multi-station composite polishing device and method of elongated metal workpiece - Google Patents
The Mobile multi-station composite polishing device and method of elongated metal workpiece Download PDFInfo
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- CN109454303A CN109454303A CN201811366110.4A CN201811366110A CN109454303A CN 109454303 A CN109454303 A CN 109454303A CN 201811366110 A CN201811366110 A CN 201811366110A CN 109454303 A CN109454303 A CN 109454303A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H5/00—Combined machining
- B23H5/06—Electrochemical machining combined with mechanical working, e.g. grinding or honing
- B23H5/08—Electrolytic grinding
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Abstract
The present invention relates to a kind of Mobile multi-station composite polishing device of elongated metal workpiece and methods, especially km level length, device successively include support and payingoff mechanism, preceding cleaning device, multistation electrolysis polished die block, multistation electrolysis-mechanical composite polishing module, rear cleaning device and take-up mechanism from front to back.Polished elongated metal workpiece does linear uniform motion by the motor driven of take-up mechanism, after removing surface and oil contaminant by preceding cleaning device, the efficient removal of workpiece surface excess stock is realized using multistation electrolysis polished die block, it reuses multistation electrolysis-mechanical planarization module and improves workpiece surface quality and brightness, then complete to polish through over cleaning.The present invention has the high efficiency of electrobrightening and the overall merit of electrolysis-mechanical polishing high quality, by different number electrobrightening module and the combination of electrolysis-mechanical planarization module, the mobile surface polishing of different size strip (especially km level length) metal works is realized.
Description
Technical field
The present invention relates to medal polish technical fields, and in particular to a kind of Mobile multi-station of elongated metal workpiece is multiple
Close burnishing device and method.
Background technique
With the continuous improvement required properties of product, mentioned in surface quality and brightness of the more occasion to metal works
Increasingly higher demands are gone out.But due to processing technology or the reason of material composition, part metals workpiece is being processed
There is situations such as surface quality and brightness be not high or there are burr and dark oxidation films later, not only influences the work of product
Make performance and used life, can also influence the sale of product because apparent brightness is not high.Therefore, to some surface quality and light
The higher metal works of brightness requirement carry out surface polishing and are of great significance.
Currently, the polishing technology for metal works mainly has mechanical polishing, chemical polishing, grinding and polishing, Jet Polishing
With electrobrightening technology etc..
Mechanical polishing technology is a kind of common metal surface polishing technology.The technology is usually using tools such as emery wheel, polishing wheels
It is physically contacted with workpiece, directly application mechanical force carries out material removal polishing in surface of workpiece.Mechanical polishing technology has
Device is simple, the advantages that being easily achieved, but efficiency is lower, and workpiece surface can generate machining stress so that lattice surface variation and
Influence performance and the service life of workpiece.
Chemical polishing technology is that a kind of process for treating surface of surface polishing of metallic workpiece is realized using electrochemical principle.It should
Technology is put into metal works in strong electrolytic solution, so that workpiece surface forms different anode and cathode regions and constitutes complexity
Micro cell system carries out selective dissolution and realizes workpiece surface polishing.Chemical polishing appts are simple, are capable of handling tubule, have
Deep hole and complex-shaped part, high production efficiency.But polishing fluid waste liquid is difficult to reuse and easily causes bad shadow to environment
It rings.
Grinding and polishing technology is after fixing workpiece support, to be squeezed using grinding tool and small abrasive material is driven to grind in workpiece surface
It cuts, removes the precise polished technology of one layer of very thin metal layer.The surface quality of grinding and polishing is good, but generally directed to simple larger
Plane or curved surface without special construction carry out polishing, and the surface polishing of long length complicated shape is required to be difficult to reality
It is existing.
Jet Polishing is also known as abradant jet processing, including the polishing of abrasive air Jet Polishing, jet of ice grains, magnetic jet stream are thrown
Light, nano colloid flow shooting polishing and negative pressure inhale a variety of form processings such as stream polishing.Jet Polishing is uniformly to mix abrasive material and matrix
After conjunction, workpiece is rushed at through jet port high speed under the action of dynamical system, impacts removal workpiece surface protrusion and oxygen using abrasive grain
Change layer etc., realizes surface polishing.Jet Polishing can be realized the surface polishing processing of complex part shape and type chamber, but the technology
Equipment cost it is higher and will cause be polished part sub-surface damage influence workpiece performance.
Electrobrightening technology is widely applied in polishing field in recent years, it has also become improves surface of workpiece
Quality and the common surface polishing technique of brightness.The technology is using Anodic solution principle to surface of workpiece material
Dissolution removal is carried out, to obtain smooth bright surface.Electrobrightening technology has high in machining efficiency, processable range wide etc. excellent
Point, but single application electrobrightening carries out the surface polishing processing of metal works, usually faces processing uniformity deficiency, surface light
The deficiencies of luminance difference.
Above-mentioned polishing technology respectively has advantage, but there is also corresponding deficiency, single polishing technology has been difficult to meet polishing
It is required that.Therefore, comprehensive or Application of composite difference polishing technology realizes that the polishing of great surface quality, high brightness has become surface
One important development direction of polishing technology.Meanwhile the application of existing polishing technology is mostly that the less big part of length produces
Product still lack relevant mature efficient for the elongated metal workpiece of long length (especially km level length)
Burnishing device and method.
Summary of the invention
The object of the present invention is to provide a kind of Mobile multi-station composite polishing device of elongated metal workpiece and method,
The overall merit of its high efficiency and electrolysis-mechanical polishing high quality with electrobrightening, is electrolysed polished die by multistation
Block and multistation electrolysis-mechanical composite polishing module carry out Compound Machining, realize that (especially km grade is long for elongated metal workpiece
Degree) mobile surface polishing, and reach surface quality and brightness requirement, burnishing surface can achieve visual mirror effect.
The technical scheme adopted by the invention is as follows:
The Mobile multi-station composite polishing device of elongated metal workpiece, it is characterised in that:
Device successively includes that support and payingoff mechanism, preceding cleaning device, multistation are electrolysed polished die block, Multi-station electrical from front to back
Solution-mechanical composite polishing module, rear cleaning device and take-up mechanism；
Polished elongated metal workpiece does linear uniform motion by the motor driven of take-up mechanism, first by support and paying out machine
Structure release, pass sequentially through later preceding cleaning device, multistation electrolysis polished die block, multistation electrolysis-mechanical planarization module and after
Cleaning device is finally recycled by take-up mechanism coiled.
Preceding cleaning device, multistation electrolysis polished die block, multistation electrolysis-mechanical composite polishing module and rear cleaning device
It is provided with liquid collection trough；
The liquid collection trough of preceding cleaning device and rear cleaning device is equipped with cleaning solution；
The liquid collection trough that multistation is electrolysed polished die block is equipped with electrolytic polishing liquid；
Multistation electrolysis-mechanical composite polishing module liquid collection trough is equipped with composite polishing liquid.
Each liquid collection trough is separately installed with circulating pump and flow valve, and cleaning device, multistation are electrolysed forward by hose
Polish the processing stations feed flow of module, multistation electrolysis-mechanical composite polishing module and rear cleaning device.
It includes multiple single-station electrobrightening modular devices that multistation, which is electrolysed polished die block,；
Single-station electrobrightening modular device bottom is electrobrightening insulation module block pedestal, electrobrightening insulation module block pedestal
Top is equipped with electrobrightening modular substrate, be equipped with above electrobrightening modular substrate relatively in groups, gap it is adjustable at least
Two electrodes, linear arrangement.
Multistation electrolysis-mechanical composite polishing module includes multiple single-station electrolysis-mechanical composite polishing devices；
Single-station electrolysis-mechanical composite polishing device bottom is electrolysis-mechanical composite polishing insulation module block pedestal, electrolysis-machine
Electrolysis-mechanical composite polishing modular substrate, electrolysis-mechanical composite polishing are installed above tool composite polishing insulation module block pedestal
Modular substrate, top be equipped with relatively in groups, gap adjustable at least two polishing wheel mechanism, linear arrangement.
Polishing wheel mechanism includes self-sealing rolling bearing, and self-sealing rolling bearing exterior ring cap is equipped with polishing wheel, on polishing wheel
Side's setting top bearing cover and clamp nut, lower section are provided with lower bearing end cap, top bearing cover, polishing wheel and lower bearing end cap
It is bolted.
There is gasket between top bearing cover and polishing wheel, has gasket between polishing wheel and lower bearing end cap.
The Mobile multi-station composite polishing method of elongated metal workpiece, it is characterised in that:
It is realized by following steps:
Step 1: polished elongated metal workpiece is discharged by support and payingoff mechanism, by polished elongated metal workpiece
One end is packed by preceding cleaning device left end, passes sequentially through preceding cleaning device, multistation electrolysis polished die block, multistation electrolysis-machine
After tool composite polishing module and rear cleaning device, winding recycling is at take-up mechanism；
Step 2: each electrobrightening module electrodes and polished elongated metal work in multistation electrolysis polished die block are successively adjusted
The distance between part keeps pole clearance appropriate；
Step 3: polishing wheel mechanism position in multistation electrolysis-mechanical composite polishing module is successively adjusted, itself and polished length are made
The contact of bullion workpiece, and keep contact pressure appropriate；
Step 4: it successively opens multistation and is electrolysed polished die block, multistation electrolysis-mechanical composite polishing module, preceding cleaning device
With the liquid circulation pump of rear cleaning device, feed liquid hose position is adjusted, guarantees that electrolytic polishing liquid is full in multistation electrolytic module,
Composite polishing liquid is full in multistation electrolysis-mechanical composite polishing module；
Step 5: take-up mechanism motor speed is adjusted, polished elongated metal workpiece linear uniform motion is driven；Adjust multiplexing
The voltage of each processing stations in position electrobrightening module and multistation electrolysis-mechanical composite polishing module realizes continuous compound throwing
Light processing, reaches the surface quality and brightness of requirement.
The invention has the following advantages that
1. apparatus of the present invention are by realizing the multiple groups single-station electrobrightening mechanism of pure electrobrightening process and realizing electrolysis, machinery
The multiple groups single-station electrolysis of composite polishing process-machinery Compound Machining mechanism combination is constituted, the former improves the efficiency of processing, the latter
Ensure higher surface quality and brightness, can fast and effeciently realize the surface polishing of elongated metal workpiece, obtains good
Good surface quality and brightness.
2. the station quantity that the present invention participates in polishing can be freely combined according to polishing actual needs, and Multi-station electrical
At the processing gap of electrode at the solution polishing each station of module and multistation electrolysis-each station of machinery Compound Machining module
Polishing wheel mechanism and the contact pressure of workpiece are adjustable, have very strong adaptability, more specifications, multi items may be implemented
The mobile surface polishing treatment of strip (especially km level length) metal works.
3. apparatus of the present invention structure is simple, and modular construction is used, installation, debugging and easy to maintenance.
Detailed description of the invention
Fig. 1 is apparatus of the present invention schematic diagram.
Fig. 2 is single-station electrobrightening module diagram.
Fig. 3 is multistation electrolysis polished die block schematic diagram.
Fig. 4 is single-station electrolysis-mechanical composite polishing module diagram.
Fig. 5 is multistation electrolysis-mechanical composite polishing module diagram.
Fig. 6 is the polishing wheel structural scheme of mechanism that multistation electrolysis-mechanical composite polishing module uses.
In figure, the polished elongated metal workpiece of 1-, 2- is supported and payingoff mechanism, cleaning device before 3-, 4- Multi-station electrical
Solution polishing module, 5- multistation electrolysis-mechanical composite polishing module, cleaning device after 6-, 7- take-up mechanism, 8- electrode, 9- electricity
Solution polishing modular substrate, 10- electrobrightening insulation module block pedestal, 11- polishing wheel mechanism, 12- electrolysis-mechanical composite polishing mould
Block pedestal, 13- electrolysis-mechanical composite polishing insulation module block pedestal, 14- clamp nut, 15- top bearing cover, 16- polishing
Wheel, 17- lower bearing end cap, 18- self-sealing rolling bearing.
Specific embodiment
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of Mobile multi-station composite polishing device of elongated metal workpiece, device from front to back according to
Secondary includes that support and payingoff mechanism 2, preceding cleaning device 3, multistation are electrolysed polished die block 4, multistation electrolysis-mechanical composite polishing
Module 5, rear cleaning device 6 and take-up mechanism 7；Polished elongated metal workpiece 1 is done at the uniform velocity by the motor driven of take-up mechanism 7
Linear motion is discharged by support and payingoff mechanism 2 first, cleaning device 3, multistation electrolysis polished die block before passing sequentially through later
4, multistation electrolysis-mechanical planarization module 5 and rear cleaning device 6 are finally recycled in rolls by take-up mechanism 7.
Preceding cleaning device 3, multistation electrolysis polished die block 4, multistation electrolysis-mechanical composite polishing module 5 and rear cleaning
Device 6 is provided with liquid collection trough；The liquid collection trough of preceding cleaning device 3 and rear cleaning device 6 (uses existing equipped with cleaning solution
There is common cleaning solution)；The liquid collection trough that multistation is electrolysed polished die block 4 (uses existing common electrolysis equipped with electrolytic polishing liquid
Polishing fluid)；Multistation electrolysis-mechanical composite polishing module 5 liquid collection trough is equipped with composite polishing liquid (using existing common multiple
Close polishing fluid).Each liquid collection trough is separately installed with circulating pump and flow valve, and by hose cleaning device 3, Multi-station electrical forward
The processing stations feed flow of solution polishing module 4, multistation electrolysis-mechanical composite polishing module 5 and rear cleaning device 6.
It includes multiple single-station electrobrightening modular devices that multistation, which is electrolysed polished die block 4,；Single-station electrobrightening module
Bottom of device is electrobrightening insulation module block pedestal 10, is equipped with electrobrightening above electrobrightening insulation module block pedestal 10
Modular substrate 9, be equipped with above electrobrightening modular substrate 9 relatively in groups, adjustable at least two electrode 8 in gap, linear cloth
It sets.
Multistation electrolysis-mechanical composite polishing module 5 includes multiple single-station electrolysis-mechanical composite polishing devices；Either simplex
Position electrolysis-mechanical composite polishing device bottom is electrolysis-mechanical composite polishing insulation module block pedestal 13, and electrolysis-machinery is compound
Electrolysis-mechanical composite polishing modular substrate 12, electrolysis-mechanical composite polishing mould are installed above polishing module collets pedestal 13
Block pedestal 12, top be equipped with relatively in groups, gap adjustable at least two polishing wheel mechanism 11, linear arrangement.
Polishing wheel mechanism 11 includes self-sealing rolling bearing 18, and self-sealing rolling bearing 18 exterior ring cap polishing wheel 16 is thrown
Top bearing cover 15 and clamp nut 14 are set above halo 16, and lower section is provided with lower bearing end cap 17, and top bearing cover 15 is thrown
Halo 16 and lower bearing end cap 17 are bolted.Have gasket between top bearing cover 15 and polishing wheel 16, polishing wheel 16 with
There is gasket between lower bearing end cap 17.
For the elongated metal workpiece of different specifications, different number electrobrightening module and electrolysis-can be passed through
The combination of mechanical planarization module reaches the surface quality and brightness of polishing requirement.
The Mobile multi-station composite polishing method of elongated metal workpiece based on above-mentioned apparatus structure, by following steps
It realizes:
Step 1: polished elongated metal workpiece 1 is discharged by support and payingoff mechanism 2, by polished elongated metal work
1 one end of part is packed by preceding 3 left end of cleaning device, cleaning device 3, multistation electrolysis polished die block 4, Multi-station electrical before passing sequentially through
After solution-mechanical composite polishing module 5 and rear cleaning device 6, winding recycling is at take-up mechanism 7；
Step 2: according to the processing request of different size elongated metal workpiece, different number single-station electrobrightening mould is set
Block is combined with single-station electrolysis-mechanical planarization module.
Step 3: each electrobrightening module electrodes 8 and polished strip in multistation electrolysis polished die block 4 are successively adjusted
The distance between metal works 1 keep pole clearance appropriate；
Step 4: successively adjust multistation electrolysis-mechanical composite polishing module in 11 position of polishing wheel mechanism, make its with it is polished
Elongated metal workpiece 1 contacts, and keeps contact pressure appropriate；
Step 5: multistation electrolysis polished die block 4, multistation electrolysis-mechanical composite polishing module 5, preceding cleaning dress are successively opened
The liquid circulation pump of 2 and rear cleaning device 3 is set, feed liquid hose position is adjusted, guarantees electrolytic polishing liquid in multistation electrolytic module
Full, electrolysis-mechanical composite polishing liquid is full in multistation electrolysis-mechanical composite polishing module；
Step 6: 7 motor speed of take-up mechanism is adjusted, polished 1 linear uniform motion of elongated metal workpiece is driven；It adjusts more
Station electrochemical polishes the voltage of each processing stations in module (4) and multistation electrolysis-mechanical composite polishing module (5), the company of realization
Continuous composite polishing processing, reaches the surface quality and brightness of requirement.
As shown in Figure 1, polished elongated metal workpiece 1 uniform motion forward under the motor driven of take-up mechanism 7, speed
Range is spent up to 15~30m/min.
Preceding cleaning device 3 is mainly used for cleaning the greasy dirt etc. on elongated metal workpiece, and rear cleaning device 6 is substantially carried out clearly
The working solution of adherency on the surface of the workpiece is washed, the liquid supply pressure of the two can be carried out according to the actual conditions of elongated metal workpiece
Adjustment.
Multistation as shown in Figure 3 is electrolysed polished die block 4, before processing, by adjusting the position of fastening bolt, it is ensured that each
The pole clearance of electrode 8 is 1~5cm at station.
Multistation electrolysis-mechanical composite polishing module 5 as shown in Figure 5, before processing, adjusts 11 position of polishing wheel mechanism, leads to
It crosses fastening bolt fixed bit to set, guarantees that processing contact pressure is 0.1~0.5MPa.
Polishing wheel mechanism 11 in multistation electrolysis-mechanical composite polishing module 5 as shown in Figure 6, by polishing wheel when processing
16 are mounted on self-sealing bearing 18, and are connected and fixed using bolt and top bearing cover 15 and lower bearing end cap 17.
Multistation is electrolysed polished die block 4 and multistation electrolysis-mechanical composite polishing module 5 passes through T-shaped conductive column and throws
Light power source special anode (+) is connected, and elongated metal workpiece is connected with power cathode, and operating voltage is 5~15V.
7 motor speed of take-up mechanism is adjusted, polished 1 linear uniform motion of elongated metal workpiece is driven.Adjustment electrolysis
Polishing, electrolysis-mechanical composite polishing operating voltage.It realizes continuous multistation composite polishing processing, reaches the surface quality of requirement
And brightness.
The contents of the present invention are not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, all are covered by the claims of the invention.
Claims (8)
1. the Mobile multi-station composite polishing device of elongated metal workpiece, it is characterised in that:
Device successively includes that support and payingoff mechanism (2), preceding cleaning device (3), multistation are electrolysed polished die block from front to back
(4), multistation electrolysis-mechanical composite polishing module (5), rear cleaning device (6) and take-up mechanism (7)；
Polished elongated metal workpiece (1) does linear uniform motion by the motor driven of take-up mechanism (7), first by support and
Payingoff mechanism (2) release passes sequentially through preceding cleaning device (3), multistation electrolysis polished die block (4), multistation electrolysis-machine later
Tool polishes module (5) and rear cleaning device (6), is finally recycled by take-up mechanism (7) coiled.
2. the Mobile multi-station composite polishing device of elongated metal workpiece according to claim 1, it is characterised in that:
Preceding cleaning device (3), multistation are electrolysed polished die block (4), multistation electrolysis-mechanical composite polishing module (5) He Houqing
Cleaning device (6) is provided with liquid collection trough；
The liquid collection trough of preceding cleaning device (3) and rear cleaning device (6) is equipped with cleaning solution；
The liquid collection trough that multistation is electrolysed polished die block (4) is equipped with electrolytic polishing liquid；
Multistation electrolysis-mechanical composite polishing module (5) liquid collection trough is equipped with composite polishing liquid.
3. the Mobile multi-station composite polishing device of elongated metal workpiece according to claim 2, it is characterised in that:
Each liquid collection trough is separately installed with circulating pump and flow valve, and cleaning device (3), multistation electrolysis are thrown forward by hose
Optical module (4), multistation electrolysis-mechanical composite polishing module (5) and rear cleaning device (6) processing stations feed flow.
4. the Mobile multi-station composite polishing device of elongated metal workpiece according to claim 1, it is characterised in that:
It includes multiple single-station electrobrightening modular devices that multistation, which is electrolysed polished die block (4),；
Single-station electrobrightening modular device bottom is electrobrightening insulation module block pedestal (10), electrobrightening insulation module block
Be equipped with electrobrightening modular substrate (9) above pedestal (10), be equipped with above electrobrightening modular substrate (9) relatively in groups,
Adjustable at least two electrode (8) in gap, linear arrangement.
5. the Mobile multi-station composite polishing device of elongated metal workpiece according to claim 1, it is characterised in that:
Multistation electrolysis-mechanical composite polishing module (5) includes multiple single-station electrolysis-mechanical composite polishing devices；
Single-station electrolysis-mechanical composite polishing device bottom is electrolysis-mechanical composite polishing insulation module block pedestal (13), electricity
Electrolysis-mechanical composite polishing modular substrate (12) is installed above solution-mechanical composite polishing insulation module block pedestal (13), electricity
Solution-mechanical composite polishing modular substrate (12), top be equipped with relatively in groups, gap adjustable at least two polishing wheel mechanism
(11), linear arrangement.
6. the Mobile multi-station composite polishing device of elongated metal workpiece according to claim 5, it is characterised in that:
Polishing wheel mechanism (11) includes self-sealing rolling bearing (18), and self-sealing rolling bearing (18) exterior ring cap is equipped with polishing wheel
(16), setting top bearing cover (15) and clamp nut (14), lower section are provided with lower bearing end cap (17) above polishing wheel (16),
Top bearing cover (15), polishing wheel (16) and lower bearing end cap (17) are bolted.
7. the Mobile multi-station composite polishing device of elongated metal workpiece according to claim 6, it is characterised in that:
There is gasket between top bearing cover (15) and polishing wheel (16), has pad between polishing wheel (16) and lower bearing end cap (17)
Piece.
8. the Mobile multi-station composite polishing method of elongated metal workpiece, it is characterised in that:
It is realized by following steps:
Step 1: polished elongated metal workpiece (1) is discharged by support and payingoff mechanism (2), by polished strip gold
Metal work-pieces (1) one end is packed by preceding cleaning device (3) left end, passes sequentially through preceding cleaning device (3), multistation electrolysis polished die block
(4), after multistation electrolysis-mechanical composite polishing module (5) and rear cleaning device (6), winding recycling is at take-up mechanism (7)；
Step 2: each electrobrightening module electrodes (8) and polished strip in multistation electrolysis polished die block (4) are successively adjusted
The distance between metal works (1), keep pole clearance appropriate；
Step 3: successively adjust multistation electrolysis-mechanical composite polishing module in polishing wheel mechanism (11) position, make its with wait throw
Light elongated metal workpiece (1) contact, and keep contact pressure appropriate；
Step 4: multistation electrolysis polished die block (4), multistation electrolysis-mechanical composite polishing module (5), preceding clear is successively opened
The liquid circulation pump of cleaning device (2) and rear cleaning device (3) adjusts feed liquid hose position, guarantees electricity in multistation electrolytic module
Solution polishing fluid is full, and composite polishing liquid is full in multistation electrolysis-mechanical composite polishing module；
Step 5: take-up mechanism (7) motor speed is adjusted, polished elongated metal workpiece (1) linear uniform motion is driven；It adjusts
The voltage of each processing stations, real in whole multistation electrolysis polished die block (4) and multistation electrolysis-mechanical composite polishing module (5)
Now continuous composite polishing processing, reaches the surface quality and brightness of requirement.
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| CN110919114A (en) * | 2019-12-09 | 2020-03-27 | 西安工业大学 | High-efficiency electrochemical machining device with large length-diameter ratio and complex spiral structure |
| CN114951857A (en) * | 2022-06-14 | 2022-08-30 | 盐城工学院 | Medical special-shaped nickel-titanium alloy wire processing device and processing technology |
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