CN104858668A - Pulse current assisted cutting system and application method thereof - Google Patents
Pulse current assisted cutting system and application method thereof Download PDFInfo
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- CN104858668A CN104858668A CN201510212393.7A CN201510212393A CN104858668A CN 104858668 A CN104858668 A CN 104858668A CN 201510212393 A CN201510212393 A CN 201510212393A CN 104858668 A CN104858668 A CN 104858668A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P25/00—Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
Abstract
The invention provides a pulse current assisted cutting system and an application method thereof. The system comprises a lathe with a chuck and a small sliding plate, a dynamometer mounted on the small sliding plate, a cutter frame mounted on the dynamometer in an insulation manner, two electric brush devices positioned on the left side and the right side of the cutter frame and connected with the small sliding plate in an insulation manner, and a pulse power supply with a monitoring and control switch module, wherein the switch module is connected into a power supply input loop of the pulse power supply and used for controlling the pulse power supply to start or stop working according to an output signal of the dynamometer. In the cutting process, since pulse current is intensively led in a cutting zone on the surface of a workpiece, hardness of the cutting zone of the workpiece keeps in a range suitable for cutting, the cutting force is reduced obviously, the processing efficiency is improved obviously, cutter loss is low and the processing cost is low. In the system, the utilization efficiency of pulse current is high, the pulse current is not influenced and limited by workpiece sizes, the phenomena of sparking and discharge in the cutting-in and cutting-out processes of a cutter to the workpiece are avoided and the system can be applied to continuous and interrupted cutting of conductive workpieces.
Description
Technical field
The invention belongs to metal processing sectors, be specifically related to a kind of pulse current assisted machining system of processing and application process thereof.
Background technology
At present, the main bugbear that metal material machining field faces is that some difficult processing metal hardness is very large or work hardening is serious, and in process, resistance to cutting is large, and cutter loss is serious with destruction, and working (machining) efficiency is low, with high costs.Therefore, the difficult-to-machine metal Machining Technology for Cutting developing high efficiency, low cost is a current main direction of studying in the industry.
Chinese patent " a kind of Electroplastic cutting processing system and application process thereof " (publication number CN103447832A) provide a kind of utilize the electroluminescent plastic effect of pulse current to carry out the processing of difficult processing metal high-efficient cutting system and application process.But current loop involved in this patent is positive source → lathe chuck → workpiece → tail stock → power cathode, pulse current is by whole workpiece, very low for its current utilization efficiency the working angles only occurring over just surface of the work.Especially the workpiece of major diameter size is cut, or cut electric conductivity and the poor material of magnetic conductivity, or when carrying out the machining of large cutting data, system of processing described by this patent and method need higher pulse current to realize its Electroplastic action effect, and this just means the energy ezpenditure of the more powerful pulse power of needs and Geng Gao.Therefore, this system still has very large distance at a distance of production application.
Summary of the invention
For the problems referred to above, the invention provides a kind of novel pulse current assisted machining system of processing and application process thereof.This system by be installed on small slide plate, in the brushgear of both sides, cutting region surface of the work, pulse current is imported surface of the work cutting region with synchronization-moving, the close sliding contact of cutting tool, make pulse current be highly concentrated in workpiece surface machining district all the time, higher machining efficiency and lower cost consumption can be brought.
To achieve these goals, the present invention is by the following technical solutions:
A kind of pulse current assisted machining system of processing, comprising:
Lathe, this lathe comprises the chuck of small slide plate and holding workpiece (electrically conductive workpiece);
Cutting force sensor, is installed on described small slide plate;
Be provided with the knife rest of cutter, this knife rest insulating mounting is on described cutting force sensor;
Be positioned at the left brushgear of described cylinder arranged on left and right sides and right brushgear, described left and right brushgear insulating mounting on described sliding small slide plate, the left brush of described left brushgear and the right brush of described right brushgear and described surface of the work close sliding contact; The center of described left brush, the center of described right brush and the point of a knife of described cutter are all in the horizontal plane at center line place of described workpiece;
The pulse power, two outputs connect described left brush and right brush respectively; And,
Monitoring and Controlling switch module, this model calling is in the power input circuit of the described pulse power, and described in input termination, the output of cutting force sensor, starts for controlling the described pulse power according to the output signal of described cutting force sensor or quit work.
Native system can comprise cooling device further, and non-conductive medium can be used to cool as cooling or air blast cooling mode.
Wherein, described left brushgear is made up of left brush, left adjuster and left brush carrier, and described left brush carrier is made up of the linkage section of the installation portion of level, oblique fulcrum bar and this oblique fulcrum bar upper end; Described left adjuster is made up of left sleeve and the left spring be arranged in left sleeve, and described left brush is positioned at this left sleeve one end, and the linkage section of described left brush carrier to be plugged in this left sleeve other end and to contact this left spring.When described left spring is in free state, on direction of feed, described left brush working face is positioned at the front of described tool nose, when described left spring is in compressive state, and described left brush working face and described surface of the work close sliding contact.
Described right brushgear is made up of right brush, right adjuster and right brush carrier, and described right brush carrier is made up of the linkage section of the installation portion of level, oblique fulcrum bar and oblique fulcrum bar upper end; Described right adjuster is made up of right sleeve and the right spring be arranged in right sleeve, and described right brush is positioned at this right sleeve one end, and the linkage section of described right brush carrier to be plugged in this right sleeve other end and to contact this right spring.When described right spring is in free state, on direction of feed, described right brush working face is positioned at the front of described tool nose, when described right spring is in compressive state, and described right brush working face and described surface of the work close sliding contact.
Arrange the first insulating barrier between described left brush carrier and described small slide plate, described left brush carrier is with on the described small slide plate on the left of described knife rest through the installation portion of described left brush carrier and multiple first insulated bolt spiral shells of described first insulating barrier; Arrange the second insulating barrier between described right brush carrier and described small slide plate, described right brush carrier is with on the described small slide plate on the right side of described knife rest through the installation portion of described right brush carrier and multiple second insulated bolt spiral shells of described second insulating barrier; 3rd insulating barrier is set between described knife rest and described cutting force sensor, described knife rest with through the installation portion of described knife rest and multiple 3rd insulated bolt spiral shells of described 3rd insulating barrier on described cutting force sensor.
The working face of described left brush when feed prior to described tool nose close sliding contact in described surface of the work, leave described surface of the work in described tool nose after during withdrawing; The working face of described right brush when feed prior to described tool nose close sliding contact in described surface of the work, leave described surface of the work in described tool nose after during withdrawing.
The maximum compression stroke of the maximum compression stroke of described left adjuster (left spring), described right adjuster (right spring) is all greater than the maximum back engagement of the cutting edge that machining uses.
The described pulse power can output frequency be 50-10000Hz, pulsewidth is 20-1000 μ s, peak point current is the pulse current of 100-10000A.
Due on the cutting force sensor of knife rest insulating mounting on small slide plate, the cutting force produced in working angles can be detected by cutting force sensor.When described cutting force sensor detect cutting force non-vanishing time, described Monitoring and Controlling switch module processes the output signal from described cutting force sensor, and the input power connecting the described pulse power makes the described pulse power start working; When to detect cutting force be zero to described cutting force sensor, described Monitoring and Controlling switch module processes the output signal from described cutting force sensor, and cuts off the input power of the described pulse power.
A kind of application process of this pulse current assisted machining system of processing, comprises the following steps:
Clamped by workpiece one end chuck, start lathe, workpiece rotates with chuck;
Mobile small slide plate feed, the right brush making the left brush of left brushgear and right brushgear first with surface of the work close sliding contact; Tool nose contacts surface of the work and starts to cut subsequently, meanwhile to detect cutting force non-vanishing for cutting force sensor, Monitoring and Controlling switch module processes the output signal from cutting force sensor, and the input power of make pulse power supply makes the pulse power start working; The pulse power imports pulse current by described left brush and right brush to surface of the work machining district; In working angles, left and right brushgear drags with the feeding of cutter synchronizing moving by small slide plate;
Cut and finish, mobile small slide plate withdrawing, first Lathe tool tip leaves surface of the work, and cutting force sensor detects cutting force vanishing simultaneously, Monitoring and Controlling switch module processes the output signal from cutting force sensor, and the input power pulse power of break impulse power supply quits work;
Close lathe, chuck stops operating, and takes off workpiece from chuck.
Wherein, described workpiece is electrically conductive workpiece, and described pulse current parameter is: frequency is 50-10000Hz, pulsewidth is 20-1000 μ s, peak point current is the pulse current of 100-10000A.
Pulse current assisted machining system of processing of the present invention, by be installed on small slide plate, in the brushgear of both sides, cutting region surface of the work, pulse current is imported surface of the work cutting region with synchronization-moving, the close sliding contact of cutting tool.Based on the shortest resistance minimum principle of circuit and pulse current kelvin effect, the added pulse current overwhelming majority can flow through along the surface of the work cutting region between two brushgears.All the time the pulse current being highly concentrated in workpiece surface machining district can bring higher machining efficiency and lower cost consumption.This system is cutting the workpiece of high rigidity major diameter size, or cut electric conductivity and the poor material of magnetic conductivity, or when carrying out the machining of large cutting data, there is significant advantage, device is simple, with low cost, cutter incision and cut out workpiece and not strike sparks electric discharge phenomena, has good practical prospect.
By this system, pulse current assisted machining processing experiment is carried out to workpiece, under identical cutting data parameter, its main cutting force reduces 23-31.8% than the conventional cutting main cutting force do not powered up, than Chinese patent " a kind of Electroplastic cutting processing system and application process thereof " (publication number CN103447832A) provide cutting process main cutting force reduce 6.2-9.2%, cutting force significantly reduces, and current utilization efficiency significantly improves.Utilize this system to carry out pulse current assisted machining and add man-hour, cutter incision and cut out workpiece and not strike sparks electric discharge phenomena, cutter loss is little, processing cost is low, apparatus is simple, can produce separately special cutting processing unit (plant), also can at existing equipment as Lathe Modification forms, the scope of application is wide, not by the restriction of cutting apparatus model, type.
Accompanying drawing explanation
Fig. 1 is present system middle left and right brushgear, knife rest and small slide plate partial configuration schematic diagram;
Fig. 2 is Fig. 1 intermediate slide and small slide plate partial longitudinal section schematic diagram;
Fig. 3 is left brushgear in Fig. 1, small slide plate and workpiece portion schematic diagram (right brushgear, small slide plate are identical with Fig. 3 with workpiece portion schematic diagram);
Mark in accompanying drawing: chuck 1, small slide plate 2, workpiece 3, left brush 4, right brush 5, cutter 6, cutter fastening bolt 7, insulation knife rest fastening bolt 8, knife rest 9, the 3rd insulating barrier 10, cutting force sensor 11, cutting force sensor fastening bolt 12, left brush carrier 13, left brush carrier fastening bolt 14, first insulating barrier 15, left adjuster 16;
Fig. 4 is present system and conventional cutting, Chinese patent " a kind of Electroplastic cutting processing system and application process thereof " (publication number CN103447832A) the main cutting force comparison diagram of cutting process is provided.
Detailed description of the invention
Referring to embodiment accompanying drawing, the present invention will be further described.
With reference to Fig. 1-3, pulse current assisted machining system of processing of the present invention is converted by existing lathe (not shown).System mainly comprises: the lathe with chuck 1, small slide plate 2 and knife rest 9 etc., workpiece (electrically conductive workpiece) 3, be installed on the left and right brushgear on small slide plate 2, the cutting force sensor 11 of cutting force and the pulse power (not shown) etc. with Monitoring and Controlling switch module can be detected.
Chuck 1 is in order to provide the rotational motion needed for turning, and one end of workpiece 3 is held on chuck 1.
Left brushgear comprises left brush carrier 13, left adjuster 16 and left brush 4.Left brush carrier 13 is made up of the linkage section (Fig. 3) of the installation portion of level, oblique fulcrum bar and oblique fulcrum bar upper end.Left adjuster 16 is made up of left sleeve and the left spring be arranged in left sleeve, and left brush 4 is positioned at this left sleeve one end, and the linkage section of left brush carrier 13 upper end to be plugged in this left sleeve other end and to contact this left spring.First insulating barrier 15 is set between left brush carrier 13 and small slide plate 2, with multiple first insulated bolt 14 through on the installation portion of left brush carrier 13 and the small slide plate 2 of the first insulating barrier 15 spiral shell on the left of knife rest 9.
Right brushgear is identical with left brushgear structure, is fixed on the small slide plate 2 on the right side of knife rest 9.The position of left brushgear and right brushgear is controlled in installation process, when making the right spring (not marking in figure) in the left spring in left sleeve and right sleeve be in free state, be positioned at the front of cutter 6 point of a knife at the working face of the upper left brush of direction of feed 4 and the working face of right brush 5; When this left spring and this right spring (not marking in figure) are in compressive state, make the equal close sliding contact of working face of the working face of left brush 4 and right brush 5 in the surface of workpiece 3.
Blade holder part comprises cutting force sensor 11, cutting force sensor fastening bolt the 12, the 3rd insulating barrier 10, knife rest 9, insulation knife rest fastening bolt 8, cutter fastening bolt 7 and cutter 6.Its installation method is as follows: multiple cutting force sensor fastening bolt 12 passes the installation portion spiral shell of cutting force sensor 11 on small slide plate 2; 3rd insulating barrier 10 is arranged between knife rest 9 and cutting force sensor 11, knife rest 9 with through the installation portion of knife rest 9 and multiple insulation knife rest fastening bolt 8 spiral shells of the 3rd insulating barrier 10 on cutting force sensor 11; Cutter 6 is fixed on knife rest 9 through knife rest 9 by multiple cutter fastening bolt 7.Can detect cutting force by cutting force sensor 11, existing multiple cutting force sensor selected by cutting force sensor, as Switzerland Kistler Kistler9257B cutting force sensor (being produced by Kistler company) etc.
Monitoring and Controlling switch module is connected in the power input circuit of the pulse power, and the output of input termination cutting force sensor 11, Monitoring and Controlling switch module is used for starting according to the output signal control impuls power supply of cutting force sensor 11 or quitting work.When cutting force sensor 11 detect cutting force non-vanishing time, Monitoring and Controlling switch module processes the output signal from cutting force sensor 11, and the input power of make pulse power supply makes the pulse power start working; When to detect cutting force be zero to cutting force sensor 11, Monitoring and Controlling switch module processes the output signal from cutting force sensor 11, and the input power of break impulse power supply.
After installation, the point of a knife of the center of left brush 4, the center of right brush 5 and lathe tool 6 is all in (center line of workpiece 3 and the center line of chuck 1 overlap) in the horizontal plane at the center line place of workpiece 3; Left brushgear, right brushgear and the cutter 6 be fixed on knife rest 9 all can drag synchronizing moving by small slide plate 2.
When machining starts, clamped by workpiece 3 chuck 1, start lathe (not shown), workpiece 3 rotates with chuck 1.The feed of mobile small slide plate 2, effect is suppressed due to described left spring (left adjuster 16 in) and described right spring (not marking in figure), be installed on left brush 4 working face on left and right brushgear and right brush 5 working face first close sliding contact in the surface of workpiece 3, subsequently the point of a knife contact workpiece 3 of cutter 6 surface and start to cut; Meanwhile to detect cutting force non-vanishing for cutting force sensor 11, and Monitoring and Controlling switch module processes the output signal from cutting force sensor 11, and the input power of make pulse power supply makes the pulse power start working; The pulse power two output imports pulse current by left brush 4 and right brush 5 to the surface cut processing district of workpiece 3; In working angles, because left and right brushgear is dragged by small slide plate 2, and with the feeding of cutter 6 synchronizing moving, make added pulse current be highly concentrated in the machining district, top layer of workpiece 3 all the time, realize high-efficiency pulse electric current assisted machining processing.Mobile small slide plate 2 withdrawing after cutting completes, first the point of a knife of lathe tool 6 leaves the surface of workpiece 3, cutting force sensor 11 detects cutting force vanishing simultaneously, Monitoring and Controlling switch module processes the output signal from cutting force sensor 11, and the input power pulse power of break impulse power supply quits work; The working face of the left brush 4 on left and right brushgear and the working face of right brush 5 leave the surface of workpiece 3 subsequently, and close lathe, chuck 1 stops operating, and takes off workpiece 3 from chuck 1, cut and terminate.
In working angles, two outputs of pulse power (not shown) connect the left brush 4 of left brushgear and the right brush 5 of right brushgear respectively, form current loop by left brush 4, workpiece 3 and right brush 5, and provide to workpiece 3 that frequency is 50-10000Hz, pulsewidth is 20-1000 μ s, peak point current is the pulse current of 100-10000A.
In working angles, left adjuster 16(left spring) maximum compression stroke, described right adjuster (right spring) maximum compression stroke be all greater than the maximum back engagement of the cutting edge that machining uses.
In order to cool workpiece in workpiece process, be also provided with cooling device, this cooling device uses non-conductive medium to cool as cooling agent, or adopts air blast cooling mode to cool; Non-conductive medium comprises oil, liquid nitrogen etc.
Left brush carrier 13, left adjuster 16, right brush carrier and right adjuster all adopt electric conductivity good and intensity is higher metal material is made.Due to the effect of left adjuster 16 and right adjuster, left brush 4 contacts workpiece 3 with right brush 5 and lathe tool 6 are asynchronous, started working or quit work by detection cutting force through the process of Monitoring and Controlling switch module, control impuls power supply by cutting force sensor 11, can ensure that whole working angles (comprising feed and withdrawing) puts a phenomenon without sparking, and left and right brushgear and cutter 6 drag synchronizing moving by small slide plate 2, pulse current can be made to be highly concentrated in the machining district, top layer of workpiece 3 all the time, to bring higher machining efficiency and lower cost consumption thus.
In order to make application process clearly, composition graphs 1-3, choose 304 stainless steel barses as workpiece, machining specification is Ф 12.6 × 150mm, adopt the indexable turning tool that YG6X cutter grain is housed, tool orthogonal rake 6 °, relief angle 6 °, tool cutting edge angle 95 °, cut amount of feeding 0.2mm/r, back engagement of the cutting edge 0.6mm, cutting linear velocity 40m/min.
First one end of workpiece 3 clamping chuck 1 is clamped.Then start lathe (not shown), chuck 1 starts to rotate, and drives workpiece 3 to rotate together; Amount of feeding 0.2mm/r, back engagement of the cutting edge 0.6mm, cutting linear velocity 40m/min are cut in setting; The feed of mobile small slide plate 2, due to left adjuster 16(left spring) and right adjuster (right spring) suppress effect, the working face being installed on the working face of the left brush 4 on left and right brushgear and right brush 5 first close sliding contact in the surface of workpiece 3, subsequently the point of a knife contact workpiece 3 of cutter 6 surface and start to cut; Meanwhile to detect cutting force non-vanishing for cutting force sensor 11, and Monitoring and Controlling switch module processes the output signal from cutting force sensor 11, and the input power of make pulse power supply makes the pulse power start working; The pulse power two output imports pulse current by left brush 4 and right brush 5 to the surface cut processing district of workpiece 3; In working angles, left and right brushgear is dragged by small slide plate 2, and with the feeding of cutter 6 synchronizing moving, make added pulse current be highly concentrated in the machining district, top layer of workpiece 3 all the time, realize high-efficiency pulse electric current assisted machining processing; Mobile small slide plate 2 withdrawing after cutting completes, first the point of a knife of lathe tool 6 leaves the surface of workpiece 3, cutting force sensor 11 detects cutting force vanishing simultaneously, Monitoring and Controlling switch module processes the output signal from cutting force sensor 11, and the input power pulse power of break impulse power supply quits work; The working face of the left brush 4 on left and right brushgear and the working face of right brush 5 leave the surface of workpiece 3 subsequently, and close lathe, chuck 1 stops operating, and takes off workpiece 3 from chuck 1, cut and terminate.
Main cutting force tested by cutting force sensor 11, and as shown in Figure 4, in Fig. 4, current density is obtained divided by workpiece interface is long-pending by power supply output total current experimental result.As seen from Figure 4, present system is adopted to carry out pulse current assisted machining processing experiment to workpiece, under identical cutting data parameter, its main cutting force reduces 23-31.8% than the conventional cutting main cutting force do not powered up, than Chinese patent (publication number CN103447832A) provide cutting process main cutting force reduce 6.2-9.2%, cutting force significantly reduces, and current utilization efficiency significantly improves, and working angles is without sparking electric discharge phenomena.
Above by specific embodiment to invention has been detailed description, these concrete descriptions can not think that the present invention is only only limitted to the content of these embodiments.Those skilled in the art according to the present invention's design, these describe and any improvement made in conjunction with general knowledge known in this field, equivalents, all should be included in the protection domain of the claims in the present invention.
Claims (10)
1. a pulse current assisted machining system of processing, is characterized in that comprising:
Lathe, this lathe comprises the chuck of small slide plate and holding workpiece;
Cutting force sensor, is installed on described small slide plate;
Be provided with the knife rest of cutter, this knife rest insulating mounting is on described cutting force sensor;
Be positioned at the left brushgear of described cylinder arranged on left and right sides and right brushgear, described left and right brushgear insulating mounting on described sliding small slide plate, the left brush of described left brushgear and the right brush of described right brushgear and described surface of the work close sliding contact; The center of described left brush, the center of described right brush and the point of a knife of described cutter are all in the horizontal plane at center line place of described workpiece;
The pulse power, two outputs connect described left brush and right brush respectively; And,
Monitoring and Controlling switch module, this model calling is in the power input circuit of the described pulse power, and described in input termination, the output of cutting force sensor, starts for controlling the described pulse power according to the output signal of described cutting force sensor or quit work.
2. system according to claim 1, is characterized in that, described left brushgear is made up of left brush, left adjuster and left brush carrier, and described left brush carrier is made up of the linkage section of the installation portion of level, oblique fulcrum bar and this oblique fulcrum bar upper end; Described left adjuster is made up of left sleeve and the left spring be arranged in left sleeve, and described left brush is positioned at this left sleeve one end, and the linkage section of described left brush carrier to be plugged in this left sleeve other end and to contact this left spring;
Described right brushgear is made up of right brush, right adjuster and right brush carrier, and described right brush carrier is made up of the linkage section of the installation portion of level, oblique fulcrum bar and oblique fulcrum bar upper end; Described right adjuster is made up of right sleeve and the right spring be arranged in right sleeve, and described right brush is positioned at this right sleeve one end, and the linkage section of described right brush carrier to be plugged in this right sleeve other end and to contact this right spring.
3. system according to claim 2, it is characterized in that, arrange the first insulating barrier between described left brush carrier and described small slide plate, described left brush carrier is with on the described small slide plate on the left of described knife rest through the installation portion of described left brush carrier and multiple first insulated bolt spiral shells of described first insulating barrier; Arrange the second insulating barrier between described right brush carrier and described small slide plate, described right brush carrier is with on the described small slide plate on the right side of described knife rest through the installation portion of described right brush carrier and multiple second insulated bolt spiral shells of described second insulating barrier; 3rd insulating barrier is set between described knife rest and described cutting force sensor, described knife rest with through the installation portion of described knife rest and multiple 3rd insulated bolt spiral shells of described 3rd insulating barrier on described cutting force sensor.
4. system according to claim 2, it is characterized in that, when described left spring is in free state, on direction of feed, described left brush working face is positioned at the front of described tool nose, when described left spring is in compressive state, described left brush working face and described surface of the work close sliding contact; When described right spring is in free state, on direction of feed, described right brush working face is positioned at the front of described tool nose, when described right spring is in compressive state, and described right brush working face and described surface of the work close sliding contact.
5. system according to claim 2, is characterized in that, the maximum compression stroke of described left adjuster, the maximum compression stroke of described right adjuster are all greater than the maximum back engagement of the cutting edge that machining uses.
6. the system according to claim 1 and 2, is characterized in that, the working face of described left brush when feed prior to described tool nose close sliding contact in described surface of the work, leave described surface of the work in described tool nose after during withdrawing; The working face of described right brush when feed prior to described tool nose close sliding contact in described surface of the work, leave described surface of the work in described tool nose after during withdrawing.
7. system according to claim 1, it is characterized in that, described cutting force sensor detect cutting force non-vanishing time, described Monitoring and Controlling switch module processes the output signal from described cutting force sensor, and connects the input power of the described pulse power; Described cutting force sensor detects cutting force when being zero, and described Monitoring and Controlling switch module processes the output signal from described cutting force sensor, and cuts off the input power of the described pulse power.
8. the system according to claim 1 or 7, is characterized in that, the described pulse power can output frequency be 50-10000Hz, pulsewidth is 20-1000 μ s, peak point current is the pulse current of 100-10000A.
9. system according to claim 1, is characterized in that, also comprises cooling device, and this cooling device adopts non-conductive medium to cool or adopts air blast cooling mode.
10. a kind of application process of the pulse current assisted machining system of processing as described in any one of claim 1-9, is characterized in that, comprise the following steps:
Workpiece chuck is clamped, starts lathe workpiece and rotate with chuck;
Mobile small slide plate feed, the right brush making the left brush of left brushgear and right brushgear first with surface of the work close sliding contact; Tool nose contacts surface of the work and starts to cut subsequently, meanwhile to detect cutting force non-vanishing for cutting force sensor, Monitoring and Controlling switch module processes the output signal from cutting force sensor, and the input power of make pulse power supply makes the pulse power start working; The pulse power imports pulse current by described left brush and right brush to surface of the work machining district; In working angles, left and right brushgear drags with the feeding of cutter synchronizing moving by small slide plate;
Cut and finish, mobile small slide plate withdrawing, first Lathe tool tip leaves surface of the work, and cutting force sensor detects cutting force vanishing simultaneously, Monitoring and Controlling switch module processes the output signal from cutting force sensor, and the input power of break impulse power supply;
Close lathe, take off workpiece from chuck.
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| CN109158829A (en) * | 2018-07-31 | 2019-01-08 | 清华大学深圳研究生院 | A kind of metal component optimization method and molding equipment based on increasing material technological forming |
| CN110202412A (en) * | 2019-07-08 | 2019-09-06 | 哈尔滨理工大学 | A kind of heavy type vertical lathe dynamometer clamping device and its design method |
| CN112372001A (en) * | 2020-11-04 | 2021-02-19 | 深圳大学 | Electric field auxiliary processing machine tool and processing method for iron-based material |
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