CN104551281A - Non-waterline cutting method and non-waterline cutting device - Google Patents
Non-waterline cutting method and non-waterline cutting device Download PDFInfo
- Publication number
- CN104551281A CN104551281A CN201310498799.7A CN201310498799A CN104551281A CN 104551281 A CN104551281 A CN 104551281A CN 201310498799 A CN201310498799 A CN 201310498799A CN 104551281 A CN104551281 A CN 104551281A
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- China
- Prior art keywords
- cutting
- filter core
- supporting seat
- waterline
- filter element
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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
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
-
- 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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
-
- 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
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
- B23H11/003—Mounting of workpieces, e.g. working-tables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The invention belongs to the technical field of spaceflight servo systems, and particularly relates to a non-waterline cutting method and a non-waterline cutting device. By the non-waterline cutting method and the non-waterline cutting device, requirements on linear cutting machining precision and cutting speed of an end surface of a filter element are met, and the cutting quality is high under the condition that the filter element is not polluted when cut off. The non-waterline cutting method comprises the following steps of (1) preparing a setting process; (2) erecting up a core tube 5 of which the length is smaller than that of the filter element in the filter element 4, and placing the core tube 5 and a dovetail groove supporting seat 3 of which the boundary dimension is matched with that of the filter element 4 in a base 7 together; (3) covering the base 7 by using an upper cover plate 6 and fixing the filter element 4 by manually fastening a butterfly nut 2; and (4) changing the dovetail groove supporting seat when filter elements with different specifications are machined and remaining rest positioning datum reference pieces in the device. The dovetail supporting seat is a V-shaped support, and the filter element can be automatically aligned after being placed in the dovetail supporting seat.
Description
Technical field
The invention belongs to space flight servo-drive system technical field, be specifically related to a kind of anhydrous wire cutting method and device.
Background technology
Filter core is the core part of product servo filter, and structure is as Fig. 1.Filter core is made up of through being folded to form ripple filter screen and lining net, because folded deformation reason causes the out-of-flatness of filter core end face after folding joint welding, need process filter core both ends of the surface, and the smooth degree direct influence of end face is to the filter core quality bonding with end cap.Because filter core is made up of non-compactness material, according to machine cut method, machining deformation is uncontrollable, and adopt special process method so only have, the wire cutting method of spark eroding technique is without cutting force.Again because filter material has permeability not pollute, must carry out under anhydrous condition.Current state internal cutting filter core main method cuts filter core end face for utilizing imported from America disc type cutter High Rotation Speed, and the method cost is higher, and filter core face deformation can be caused after tool wear to cause filter core to be scrapped.The technology and method that the domestic anhydrous Linear cut for filter core is not shaped.Ordinary lines cutting equipment first Application in the anhydrous line cutting processing of filter core, by improvement test repeatedly, is finally summed up the core methed that can meet filter core Linear cut quality by the present invention.
Summary of the invention
The object of the invention is, not enough for prior art, provide one to meet filter core end face linear cutter precision, cutting speed, under guaranteeing that filter core cuts not contaminated condition, the anhydrous wire cutting method of the one to good cut quality and device.
Technical scheme of the present invention is:
A kind of anhydrous wire-electrode cutting device, comprises stud, wing nut, dovetail groove supporting seat, filter core, core pipe, upper cover plate and base; Described base is " F " shape, which is provided with the support column of two projections, support column A and support column B, is provided with dovetail groove bearing between two support columns; Described upper cover plate one end is provided with a fixing threaded hole, and the other end is fixed by a pin on support column B; Described stud is connected with support column A by pin, and upper cover plate is fixed by wing nut and stud.
A kind of anhydrous cutting method, comprises the following steps:
1 prepares assignment procedure
The filter core 4 inside core pipe 5 being less than filter core length is first propped up by 2, then selects the dovetail groove supporting seat 3 adapted to put into base 7 together according to filter core 4 appearance and size;
3 dovetail groove supporting seats are that V-type supports, and filter core can automatic capturing after putting into, and covers upper cover plate 6, with hand by fastening wing nut 2 thus fixing filter core 4;
During the filter core of 4 each processing different sizes, change dovetail groove supporting seat, all the other references in device are without the need to loosening.
Described preparation assignment procedure comprises choosing of following parameter:
The adjustment of 1 cutting wire tensile force:
Cutting wire tensile force is 2.5kg;
2 setting wire travelling speeds:
Wire travelling speed is set as 12m/s;
Choosing of 3 molybdenum filament string diameters:
The molybdenum filament of selected Φ 0.12mm string diameter
4 voltages, electric current, power amplifier, pulse width, pulse are learned on the job and the parameter choose of the pulse power:
Bar pulse voltage is 80V, and operating voltage is 45V, and electric current is the short circuit current of 0.8 times; Pulse width 5 microsecond, silk speed 5 grades;
5 cutting wire coolings
In cooling procedure, the water droplet speed of dripping be 1 point ~ 1 point 15 seconds/often drip.
The invention has the beneficial effects as follows:
1. reach optimal process precision, avoiding silk cylinder cutting tension force can not keep steady state;
2. avoid silk cylinder " shake of string silk " in commutation process and cause fracture of wire and cut surface poor effect;
3. set rational wire travelling speed, ensure machined surface quality;
4., according to the different filter core diameters of product, the parameters such as matching voltage, electric current, power amplifier and pulse width, extend the cutting wire life-span, equipment are operated steadily, and cutting effect is good, constant product quality;
5. adopt flask device, transfusion bottle is hung on by loading onto the far-end wrapping wire letter front position of distilled water in cut workpiece in bottle, and adjust the speed that water droplet drips, cutting wire is passed by water droplet, and water droplet can not drip, the water that cutting wire is taken away just evaporates at once and can not take on cutting filter core, and reduction cutting wire heat and line cut through the dust caused in journey, and cutting speed is increased;
6. reduce costs, avoid the defect that just cannot use after prior art kind uses import tool wear.
Accompanying drawing explanation
Fig. 1 is anhydrous wire-electrode cutting device front view;
Fig. 2 is anhydrous wire-electrode cutting device top view;
Fig. 3 is speed, electric current, roughness relation curve;
Fig. 4 is inter-train pause and speed and coarse relation curve;
Fig. 5 is pulse width and inter-train pause schematic diagram;
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the processing method to a kind of multiple tracks spectral measurement that the present invention proposes further is introduced:
A kind of anhydrous wire-electrode cutting device, comprises stud 1, wing nut 2, dovetail groove supporting seat 3, filter core 4, core pipe 5, upper cover plate 6 and base 7; Described base 7 is " F " shape, which is provided with the support column of two projections, and support column A8 and support column B9 is provided with dovetail groove bearing 3 between two support columns; Described upper cover plate 6 one end is provided with a fixing threaded hole, and the other end is fixed by a pin on support column B9; Described stud 1 is connected with support column A8 by pin, and upper cover plate 6 is fixed by wing nut 2 and stud 1.
2. the anhydrous cutting method of one as claimed in claim, comprises the following steps:
(1) assignment procedure is prepared
(2) first the filter core 4 inside core pipe 5 being less than filter core length is propped up, then select the dovetail groove supporting seat 3 adapted to put into base 7 together according to filter core 4 appearance and size;
(3) dovetail groove supporting seat is that V-type supports, and filter core can automatic capturing after putting into, and covers upper cover plate 6, with hand by fastening wing nut 2 thus fixing filter core 4;
(4) when processing the filter core of different size, change dovetail groove supporting seat, all the other references in device are without the need to loosening at every turn.
Described preparation assignment procedure comprises choosing of following parameter:
(1) adjustment of cutting wire tensile force:
Cutting wire tensile force is 2.5kg;
(2) wire travelling speed is set:
Wire travelling speed is set as 12m/s;
(3) the choosing of molybdenum filament string diameter:
The molybdenum filament of selected Φ 0.12mm string diameter
(4) voltage, electric current, power amplifier, pulse width, pulse are learned on the job and the parameter choose of the pulse power:
Bar pulse voltage is 80V, and operating voltage is 45V, and electric current is the short circuit current of 0.8 times; Pulse width 5 microsecond, silk speed 5 grades;
(5) cutting wire cooling
In cooling procedure, the water droplet speed of dripping be 1 point ~ 1 point 15 seconds/often drip.
Impact cutting because have cutting wire tensile force, wire travelling speed, molybdenum filament string diameter and voltage, electric current, power amplifier, pulse width and the parameter such as inter-train pause and the pulse power, they play decisive influence to filter core end face linear cutter precision, cutting speed and filter core end face extent of corrosion, under guaranteeing that filter core cuts not contaminated condition, by six factors below control in cutting process, to reach good cut quality, meet delivery and tactical weapon model needs.
1. the adjustment of cutting wire tensile force
By adjustment tensioning force value, eliminate the slight jitter of cutting wire in cutting process, ensure that the product end surface cut out is neat, machining accuracy is best, avoid cutting wire tension force on silk cylinder not keep steady state, silk cylinder " shake of string silk " in commutation process causes fracture of wire and cut surface poor effect.
2. the wire travelling speed that setting is suitable
Without in emulsion cutting process, set suitable wire travelling speed, ensure the quality of finished surface.
3. the selecting of pair molybdenum filament string diameter
Owing to not having cooling medium processing heat to be taken away in time under anhydrous cutting condition, selecting of molybdenum filament string diameter is even more important, by lot of experiments and comparing, determines to select the best string diameter of molybdenum filament, enhance productivity, reduce production cost.
4. voltage, electric current, power amplifier, pulse width and the Selecting parameter such as inter-train pause and the pulse power
Guaranteeing that product end surface is without under the prerequisite of ablation phenomen, according to the different filter core diameters of product, the parameters such as matching voltage, electric current, power amplifier and pulse width, extend the cutting wire life-span, equipment are operated steadily, and cutting effect is good, constant product quality.
Above parameter needs to consider, and is groped by the matching relationship of the factors such as tensile force, wire travelling speed, molybdenum filament string diameter, voltage, electric current, power amplifier, pulse width, finds out optimum matching point.
5. the cooling of cutting wire
Adopt flask device, transfusion bottle is hung on by loading onto the far-end wrapping wire letter front position of distilled water in cut workpiece in bottle, and adjust the speed that water droplet drips, cutting wire is passed by water droplet, and water droplet can not drip, the water that cutting wire is taken away just evaporates at once and can not take on cutting filter core, and reduction cutting wire heat and line cut through the dust caused in journey, cutting speed is increased, single products few 15 minutes used times.
6. the development of wire-electrode cutting device
Because material for core has fragile characteristic, so traditional vice two point form fixing means cannot be adopted, isochrone cutting operation table top is less, so product frock must meet small and exquisite, product convenient mounting and clamping, accurate positioning without rocking, can the feature such as filter core of clamping different size, design formula frock of clenching fist.Filter core inside is risen with the core tube stay being less than filter core length, outside is fixed on workbench with formula Linear cut Gong Zhuan ﹙ structure such as figure 2 ﹚ that clenches fist, Linear cut frock adopts bikini to fix, product installs rear accurate positioning without rocking, the filter core that the dovetail groove of different size can be applicable to plurality of specifications is installed, by fastening ears screw fixed product.
Claims (3)
1. an anhydrous wire-electrode cutting device, is characterized in that: comprise stud (1), wing nut (2), dovetail groove supporting seat (3), filter core (4), core pipe (5), upper cover plate (6) and base (7); Described base (7) is " F " shape, which is provided with the support column of two projections, support column A(8) and support column B(9), be provided with dovetail groove bearing (3) between two support columns; Described upper cover plate (6) one end is provided with a fixing threaded hole, and the other end is fixed by a pin to support column B(9) on; Described stud (1) is by pin and support column A(8) be connected, upper cover plate (6) is fixed by wing nut (2) and stud (1).
2. a kind of anhydrous cutting method as claimed in claim 1, is characterized in that: comprise the following steps:
(1) assignment procedure is prepared
(2) first the filter core 4 inside core pipe 5 being less than filter core length is propped up, then select the dovetail groove supporting seat 3 adapted to put into base 7 together according to filter core 4 appearance and size;
(3) dovetail groove supporting seat is that V-type supports, and filter core can automatic capturing after putting into, and covers upper cover plate 6, with hand by fastening wing nut 2 thus fixing filter core 4;
(4) when processing the filter core of different size, change dovetail groove supporting seat, all the other references in device are without the need to loosening at every turn.
3. a kind of anhydrous cutting method as claimed in claim 2, is characterized in that: described preparation assignment procedure comprises choosing of following parameter:
(1) adjustment of cutting wire tensile force:
Cutting wire tensile force is 2.5kg;
(2) wire travelling speed is set:
Wire travelling speed is set as 12m/s;
(3) the choosing of molybdenum filament string diameter:
The molybdenum filament of selected Φ 0.12mm string diameter
(4) voltage, electric current, power amplifier, pulse width, pulse are learned on the job and the parameter choose of the pulse power:
Bar pulse voltage is 80V, and operating voltage is 45V, and electric current is the short circuit current of 0.8 times; Pulse width 5 microsecond, silk speed 5 grades;
(5) cutting wire cooling
In cooling procedure, the water droplet speed of dripping be 1 point ~ 1 point 15 seconds/often drip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498799.7A CN104551281B (en) | 2013-10-22 | 2013-10-22 | Anhydrous wire cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310498799.7A CN104551281B (en) | 2013-10-22 | 2013-10-22 | Anhydrous wire cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104551281A true CN104551281A (en) | 2015-04-29 |
| CN104551281B CN104551281B (en) | 2018-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310498799.7A Active CN104551281B (en) | 2013-10-22 | 2013-10-22 | Anhydrous wire cutting method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3324022A (en) * | 1962-12-17 | 1967-06-06 | Cincinnati Milling Machine Co | Apparatus for shaping metals by electrolytic means |
| JPH11243301A (en) * | 1998-02-24 | 1999-09-07 | Sumitomo Metal Mining Co Ltd | Coaxial dielectric filter |
| CN101376216A (en) * | 2008-07-11 | 2009-03-04 | 桂林机床股份有限公司 | Full automatic hydraulically operated fixture device |
| CN201385226Y (en) * | 2009-04-10 | 2010-01-20 | 南车戚墅堰机车有限公司 | Cylinder sleeve boring fixture |
| CN202462034U (en) * | 2011-12-12 | 2012-10-03 | 四川高龙机械有限公司 | Multistage gun drill fixture |
| CN103009077A (en) * | 2012-11-21 | 2013-04-03 | 无锡市航鹄科技有限公司 | V-shaped groove positioning clamp for wire cutting of cylindrical workpiece |
| CN103056690A (en) * | 2012-08-08 | 2013-04-24 | 南京梅山冶金发展有限公司 | Multi-standard steel pipe end face machining fast-changing tooling |
| CN203156055U (en) * | 2013-04-03 | 2013-08-28 | 青岛新力通工业有限责任公司 | Device of engine lathe for processing large-diameter transverse hole in radiant tube wall |
-
2013
- 2013-10-22 CN CN201310498799.7A patent/CN104551281B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3324022A (en) * | 1962-12-17 | 1967-06-06 | Cincinnati Milling Machine Co | Apparatus for shaping metals by electrolytic means |
| JPH11243301A (en) * | 1998-02-24 | 1999-09-07 | Sumitomo Metal Mining Co Ltd | Coaxial dielectric filter |
| CN101376216A (en) * | 2008-07-11 | 2009-03-04 | 桂林机床股份有限公司 | Full automatic hydraulically operated fixture device |
| CN201385226Y (en) * | 2009-04-10 | 2010-01-20 | 南车戚墅堰机车有限公司 | Cylinder sleeve boring fixture |
| CN202462034U (en) * | 2011-12-12 | 2012-10-03 | 四川高龙机械有限公司 | Multistage gun drill fixture |
| CN103056690A (en) * | 2012-08-08 | 2013-04-24 | 南京梅山冶金发展有限公司 | Multi-standard steel pipe end face machining fast-changing tooling |
| CN103009077A (en) * | 2012-11-21 | 2013-04-03 | 无锡市航鹄科技有限公司 | V-shaped groove positioning clamp for wire cutting of cylindrical workpiece |
| CN203156055U (en) * | 2013-04-03 | 2013-08-28 | 青岛新力通工业有限责任公司 | Device of engine lathe for processing large-diameter transverse hole in radiant tube wall |
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| CN104551281B (en) | 2018-03-16 |
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