CN204584931U - A kind of Intelligent grinding turning device of short pulse electric smelting chip removal cooling - Google Patents
A kind of Intelligent grinding turning device of short pulse electric smelting chip removal cooling Download PDFInfo
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- CN204584931U CN204584931U CN201520157634.8U CN201520157634U CN204584931U CN 204584931 U CN204584931 U CN 204584931U CN 201520157634 U CN201520157634 U CN 201520157634U CN 204584931 U CN204584931 U CN 204584931U
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Abstract
The utility model discloses the Intelligent grinding turning device of a kind of short pulse electric smelting chip removal cooling, comprise skive, the pulse power, dynamometer sensor, be arranged at the thermocouple in the aperture of workpiece, voltage sensor, current sensor, temperature acquisition card, charge amplifier, dynamometer, digital oscilloscope, discharge parameter looped system, pulse power positive pole connects emery wheel, negative pole connects workpiece, the discharge voltage that voltage sensor and current sensor will gather respectively, current waveform is carried through digital oscilloscope and is stored in display terminal, again by output voltage and the current value of the discharge parameter looped system Intelligent adjustment pulse power, described thermocouple connects display terminal by temperature acquisition card.The utility model, without the need to extra cooling media, directly carries out chip removal and heat extraction in atmosphere, reducing grinding temperature, reducing grinding power and improving grinding quality in dry abrasive cutting by applying short pulse voltage, environment friendly and pollution-free.
Description
Technical field
The utility model relates to the accurate grinding manufacture field of ultrahard diamond emery wheel, is specifically related to the precision electric discharge Grinding Technology of the hard brittle materials such as a kind of mould steel, engineering ceramics, carbide alloy.
Background technology
Mould steel, engineering ceramics, carbide alloy contour performance conduction hard brittle material has a wide range of applications, and its hardness is higher, and fracture toughness is low, is difficult to processing and not easily obtains high-quality surface.Traditional machine cut processing not only requires very high to the combination property of cutter, also there is the problems such as cutting force is large, cutting temperature is high, machined surface quality is poor.For these conduction hard brittle materials, occurred many new processing methods in recent years, as spark discharge processing, Laser Processing, electrochemical corrosion add the methods such as carefully and neatly done, but the suface processing quality of these processing methods is low, production cost is high, and the corrosive liquid of process in distress and cooling fluid.
Therefore, adopt the method for grinding that a kind of short pulse discharges, the Pulse Electric spark discharge produced between the metallic bond of emery wheel and chip is utilized chip to be fused, the chip fused is discharged with the emery wheel of High Rotation Speed, reduce the heap sum swiping of chip in abrasive grain cutting region, thus grinding force in reduction Grinding Process and grinding temperature, thus improve the crudy of material surface, develop a kind of environment friendly and pollution-free grinding processing method.
Utility model content
The purpose of this utility model is to overcome that grinding temperature in traditional Grinding Process is high, grinding force is large, grinding coolant contaminated environment, the shortcomings such as suface processing quality is poor, propose the Intelligent grinding turning device of a kind of short pulse electric smelting chip removal cooling, can be used for carrying out precision dry electric discharge grinding to mould steel, engineering ceramics, carbide alloy contour performance conduction hard brittle material.This Intelligent grinding turning device does not need grinding fluid, is a kind of abrasive machining device of environmental protection, also provides a kind of discharge waveform, grinding temperature and grinding force on-line acquisition system simultaneously.This device by the parameter such as output voltage, electric current of the discharge parameter self adaptation feedback regulation pulse power of collection, can realize the electric discharge grinding of intelligence.
The utility model realizes by following technical scheme:
Short pulse electric smelting chip removal cooling an Intelligent grinding turning device, comprise be fixed on numerically control grinder grinding wheel spindle on skive, the pulse power, be fixed on the dynamometer sensor on the horizontal table of numerically control grinder, the aperture being arranged at workpiece is interior for measuring the thermocouple of processing temperature, voltage sensor, current sensor, temperature acquisition card, charge amplifier, dynamometer, digital oscilloscope, discharge parameter looped system, described skive is metal anchoring agent diamond wheel, and described pulse power positive pole connects emery wheel, and negative pole connects workpiece, form discharge loop, described voltage sensor and current sensor are respectively by the discharge voltage of the discharge loop of collection, current waveform is stored in display terminal through digital oscilloscope, and described thermocouple connects display terminal by temperature acquisition card, and described dynamometer sensor connects charge amplifier successively by circuit, dynamometer and display terminal, described discharge parameter looped system is used for gathered voltage according to display terminal, the peak point current that Current Waveform Characteristics is transformed, pulse duration isopulse discharge parameter comes voltage and the current value of regulating impulse power supply adaptively, thus realizes the electric discharge grinding of intelligence.
Further, the open-circuit voltage of the described pulse power is 20V-25V, and dutycycle is 40%-50%, and frequency is 4000 Hz-5000Hz, and the discharging gap of pulse spark electric discharge is 0 ~ 150 micron, and pulsewidth is 10 ~ 100 microseconds, and electric current is 0 ~ 10 peace.
Further, the rotating speed of described skive is 20 ~ 50 meter per seconds, and feeding depth is 1 ~ 10 micron, and feed speed is 100 ~ 500 millis m/min.
Further, the material of described workpiece is mould steel, carbide alloy, titanium alloy or aluminum-base silicon carbide pottery.
Further, the metallic bond of described skive is bronze binding agent, diamond abrasive grain and bronze binding agent composition skive.
Skive is fixed on the grinding wheel spindle of numerically control grinder by the utility model, conduction hard brittle material workpiece is placed on dynamometer sensor and is also fixed on together on the horizontal table of numerically control grinder, thermocouple is placed in the aperture of workpiece, skive, workpiece and the pulse power form discharge loop, pulse power positive pole connects emery wheel, and pulse power negative pole connects workpiece; Skive does straight reciprocating motion at conductive material surface, when diamond abrasive grain cutting workpiece, Pulse Electric spark discharge is produced between the chip meeting rolled and the metallic bond of emery wheel, spark discharge can fuse chip (as shown in Figure 3) instantaneously, the chip of fusing can be discharged with the emery wheel of High Rotation Speed, thus reduce the heap sum swiping of chip in abrasive grain cutting region, cause the decline of grinding force and grinding temperature in Grinding Process, reach the object of chip removal cooling, improve the crudy of material surface; In electric discharge grinding process, can online acquisition electric current and voltage waveform by current sensor, voltage sensor and digital oscilloscope, can Real-time Collection grinding temperature by thermocouple, temperature acquisition card and display terminal, can Real-time Collection grinding force by force snesor, charge amplifier, dynamometer and display terminal.
Skive does straight reciprocating motion on conduction hard brittle material surface, carries out contact discharge grinding with conduction hard brittle material; Boart boart wheel speed is 20 ~ 50 meter per seconds, and feeding depth is 1 ~ 10 micron, and feed speed is 100 ~ 500 millis m/min, and the open-circuit voltage of the pulse power is 20 V-25V, and dutycycle is 40 ~ 50%, and frequency is 4000 ~ 5000Hz.
The utility model compared with prior art tool has the following advantages:
(1) under 20 ~ 25V open-circuit voltage, the Pulse Electric spark discharge of consistent can be produced between skive and conduction hard brittle material, chip quick-break is discharged with the emery wheel of High Rotation Speed, compared with traditional mechanical grinding method, grinding force and grinding temperature can be reduced.
(2) compared with traditional mechanical grinding method, not needing additional cooling fluid, is the lower and method for grinding of environmental protection of a kind of cost.
(3) compared with traditional mechanical grinding method, can discharge parameter reponse system Intelligent adjustment pulse power parameters be passed through, thus obtain higher-quality surface.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the utility model embodiment.
Fig. 2 is that in mechanical grinding, chip forms schematic diagram.
Fig. 3 is chip formation schematic diagram in electric discharge grinding.
Shown in figure be: 1-skive; 2-workpiece; 3-thermocouple; 4-dynamometer sensor; 5-horizontal table; 6-temperature acquisition card; 7-charge amplifier; 8-dynamometer; 9-display terminal; The 10-pulse power; 11-current sensor; 12-voltage sensor; 13-digital oscilloscope; 14-discharge parameter looped system; 15-diamond abrasive grain; 16-metallic bond; 17-chip; The spark discharge of 18-Pulse Electric; The chip of 19-fusing.
Detailed description of the invention
For better understanding the utility model, below in conjunction with drawings and Examples, the utility model is described further, but the claimed scope of the utility model is not limited to the scope that embodiment represents.
As shown in Figure 1, the grinding attachment of a kind of short pulse electric smelting chip removal cooling, comprise be fixed on numerically control grinder grinding wheel spindle on skive 1, the pulse power 10, be fixed on the dynamometer sensor 4 on the horizontal table 5 of numerically control grinder, the aperture being arranged at workpiece 2 is interior for measuring the thermocouple 3 of processing temperature, voltage sensor 12, current sensor 11, temperature acquisition card 6, charge amplifier 7, dynamometer 8, digital oscilloscope 13, described skive 1 is metal anchoring agent diamond wheel, and the described pulse power 10 positive pole connects emery wheel 1, and negative pole connects workpiece 2, forms discharge loop, and described voltage sensor 12 current sensor 11 is respectively by the voltage of the discharge loop of collection, current waveform is carried through digital oscilloscope 13 and is stored in display terminal 9, and described thermocouple 3 connects display terminal 9 by temperature acquisition card 6, and described dynamometer sensor 4 connects charge amplifier 7 successively by circuit, dynamometer 8 and display terminal 9, described discharge parameter looped system 14 for according to display terminal 9 by gathered voltage, the peak point current that Current Waveform Characteristics changes into, pulse duration isopulse discharge parameter comes voltage and the current value of regulating impulse power supply 10 adaptively, thus realizes the electric discharge grinding of intelligence.
In operating process, skive 1 is fixed on the grinding wheel spindle of numerically control grinder, conduction hard brittle material workpiece 2 is placed on dynamometer sensor 4 and is also fixed on the horizontal table 5 of numerically control grinder together, thermocouple 3 is placed in the aperture of workpiece 2 and (presses close to surface of the work), skive 1, workpiece 2 and the pulse power 10 form discharge loop, pulse power positive pole connects emery wheel 1, and pulse power negative pole connects workpiece 2; Skive 1 does straight reciprocating motion on conductive material 2 surface, micro-meter scale space between the metallic bond 16 of skive 1 and workpiece 2 is 5-200 micron, and between described metallic bond 16 and workpiece chips, the discharging gap of micro-meter scale is 2-150 micron.
When diamond abrasive grain 15 cutting workpiece 2 (as shown in Figure 2), Pulse Electric spark discharge 18 is produced between chip 17 meeting rolled and the metallic bond 16 of skive 1, spark discharge can fuse chip 17(as shown in Figure 3 instantaneously), the chip 19 of fusing can be discharged with the emery wheel 1 of High Rotation Speed, thus reduce the heap sum swiping of chip 17 in abrasive grain cutting region, cause the decline of grinding force and grinding temperature in Grinding Process, reach the object of chip removal cooling, improve the crudy of material surface; In electric discharge grinding process, can online acquisition electric current and voltage waveform by current sensor 11, voltage sensor 12 and digital oscilloscope 13, voltage, Current Waveform Characteristics turned to peak point current, pulse duration isopulse discharge parameter be input to discharge parameter looped system 14 by display terminal 9, now discharge parameter looped system 14 can the discharge parameter such as voltage, electric current of regulating impulse power supply 10 adaptively, Based Intelligent Control electric discharge Grinding Process.Can Real-time Collection grinding temperature by thermocouple 3, temperature acquisition card 6 and display terminal 9, can Real-time Collection grinding force by force snesor 4, charge amplifier 7, dynamometer 8 and display terminal 9.
Skive 1 does straight reciprocating motion on workpiece 2 surface, carries out contact discharge grinding with workpiece 2; Skive 1 rotating speed is 2000 ~ 5000 revs/min, and feeding depth is 1 ~ 10 micron, and feed speed is 100 ~ 300 millis m/min, and the open-circuit voltage of the pulse power 10 is 20 ~ 25V, and dutycycle is 40 ~ 50%, and frequency is 4000 ~ 5000Hz.
In short pulse contact discharge grinding process, if adopt suitable pulse open-circuit voltage, dutycycle and frequency, use suitable skive 1 rotating speed, feeding depth and feed speed, utilize micro-go out the non-conductive diamond abrasive grain of sword between metallic bond 16 and workpiece 2, produce the space of micro-meter scale, certain pulse floating voltage is applied between the metallic bond 16 and workpiece 2 of conduction, the conductive properties of metallic bond 16 and workpiece 2 is utilized to regulate floating voltage, the size of pulse frequency and dutycycle, thus control the discharging gap of micro-meter scale, make, between the metallic bond 16 of skive 1 and the chip 17 of workpiece 2, short pulse spark discharge occurs, the moment electric smelting of high temperature is utilized the chip 17 of micro-meter scale to be fused, then discharged by the air-flow that the surperficial High Rotation Speed of skive 1 drives, reduce the heap sum swiping of chip 17 in abrasive grain cutting region, thus grinding force in reduction grinding process and grinding temperature, improve workpiece 2 suface processing quality, it is a kind of environment friendly and pollution-free grinding processing method.
In one embodiment, the skive 1 of employing diameter 150 millimeters, thickness 2.5 millimeters is installed on the grinding wheel spindle of CNC precision grinder (SMRART B818); The workpiece 2 of width 50 millimeters, thickness 12 millimeters to be fixed on horizontal table 5 and with grinding wheel spindle to vertical; Skive 1, workpiece 2 and the pulse power 5 form discharge loop.The granularity of skive 1 is 46 orders, and concentration is 100%, and metallic bond 16 is bronze binding agent.Workpiece 2 is aluminum-base silicon carbide pottery.
Skive 1 does straight reciprocating motion on workpiece 2 surface, can produce spark discharge and chip 17 be fused and discharge between metallic bond 16 and chip 17.Grinding wheel speed is 25 meter per seconds, and feed speed 200 milli m/min, feeding depth 2 microns, pulse power open-circuit voltage is 25 volts, and dutycycle is 50%, and frequency is 5000Hz.Compared with traditional mechanical grinding, the grinding force in electric discharge grinding process and grinding temperature can reduce by about 30% and 10% respectively, and can obtain better surface quality.
In another embodiment, the skive 1 of employing diameter 150 millimeters, thickness 2.5 millimeters is installed on the grinding wheel spindle of CNC precision grinder (SMRART B818); The workpiece 2 of width 50 millimeters, thickness 12 millimeters to be fixed on horizontal table 5 and with grinding wheel spindle to vertical; Skive 1, workpiece 2 and the pulse power 5 form discharge loop.The granularity of skive 1 is 46 orders, and concentration is 100%, and metallic bond 16 is bronze binding agent, and workpiece 2 is carbide alloy.
Skive 1 does straight reciprocating motion at material surface, can produce spark discharge and chip 17 be fused and discharge between emery wheel metallic bond and chip.Skive 1 rotating speed is 25 meter per seconds, and feed speed 50 milli m/min, feeding depth 1 micron, pulse power open-circuit voltage is 25 volts, and dutycycle is 40%, and frequency is 5000Hz.Compared with traditional mechanical grinding, the grinding force in electric discharge grinding process and grinding temperature obviously reduce about 20% and 5%, and the surface roughness on workpiece 2 surface can reduce about 15%.
In another embodiment, the skive 1 of employing diameter 150 millimeters, thickness 2.5 millimeters is installed on the grinding wheel spindle of CNC precision grinder (SMRART B818); The workpiece 2 of width 50 millimeters, thickness 12 millimeters to be fixed on horizontal table 5 and with grinding wheel spindle to vertical; Skive 1, workpiece 2 and the pulse power 5 form discharge loop.The granularity of skive 1 is 46 orders, and concentration is 100%, and metallic bond 16 is bronze binding agent, and workpiece 2 is S136H mould steel.
Adopt axial feed mode, skive 1 in axial direction does plane motion on workpiece 2 surface, can produce spark discharge and chip 18 be fused and discharge between metallic bond 16 and chip 17.Skive 1 rotating speed is 25 meter per seconds, and feed speed 30 milli m/min, feeding depth 5 microns, the pulse power 10 open-circuit voltage is 25 volts, and dutycycle is 40%, and frequency is 5000Hz.Compared with traditional mechanical grinding, the grinding force in electric discharge grinding process and grinding temperature obviously reduce about 25% and 15%, and the surface roughness of workpiece 2 can reduce about 30%.
Above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in the utility model claim.
Claims (5)
1. the Intelligent grinding turning device of a short pulse electric smelting chip removal cooling, it is characterized in that, comprise be fixed on numerically control grinder grinding wheel spindle on skive (1), the pulse power (10), be fixed on the dynamometer sensor (4) on the horizontal table (5) of numerically control grinder, the aperture being arranged at workpiece (2) is interior for measuring the thermocouple (3) of processing temperature, voltage sensor (12), current sensor (11), temperature acquisition card (6), charge amplifier (7), dynamometer (8), digital oscilloscope (13), discharge parameter looped system (14), described skive (1) is metal anchoring agent diamond wheel, the described pulse power (10) positive pole connects emery wheel (1), negative pole connects workpiece (2), form discharge loop, described voltage sensor (12) and current sensor (11) are respectively by the discharge voltage of the discharge loop of collection, current waveform is stored in display terminal (9) through digital oscilloscope (13), described thermocouple (3) connects display terminal (9) by temperature acquisition card (6), described dynamometer sensor (4) connects charge amplifier (7) successively by circuit, dynamometer (8) and display terminal (9), described discharge parameter looped system (14) for according to display terminal (9) by gathered voltage, the peak point current that Current Waveform Characteristics changes into, pulse duration isopulse discharge parameter comes output voltage and the current value of regulating impulse power supply (10) adaptively, thus realize the electric discharge grinding of intelligence.
2. the Intelligent grinding turning device of short pulse electric smelting chip removal cooling according to claim 1, it is characterized in that: the open-circuit voltage of the described pulse power (10) is 20V-25V, dutycycle is 40%-50%, frequency is 4000 Hz-5000Hz, the discharging gap of pulse spark electric discharge is 0 ~ 150 micron, pulsewidth is 10 ~ 100 microseconds, and electric current is 0 ~ 10 peace.
3. the Intelligent grinding turning device of short pulse electric smelting chip removal cooling according to claim 1, is characterized in that: the rotating speed of described skive (1) is 20 ~ 50 meter per seconds, and feeding depth is 1 ~ 10 micron, and feed speed is 100 ~ 500 millis m/min.
4. the Intelligent grinding turning device of short pulse electric smelting chip removal cooling according to claim 1, is characterized in that: the material of described workpiece (2) is mould steel, carbide alloy, titanium alloy or aluminum-base silicon carbide pottery.
5. the Intelligent grinding turning device of short pulse electric smelting chip removal cooling according to claim 1, is characterized in that: the metallic bond of described skive (1) is bronze binding agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520157634.8U CN204584931U (en) | 2015-03-19 | 2015-03-19 | A kind of Intelligent grinding turning device of short pulse electric smelting chip removal cooling |
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| CN201520157634.8U CN204584931U (en) | 2015-03-19 | 2015-03-19 | A kind of Intelligent grinding turning device of short pulse electric smelting chip removal cooling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104547248A (en) * | 2015-01-02 | 2015-04-29 | 袁福德 | Medicine for treating orthopedic disease, preparation method, test method and application of medicine |
| CN104742002A (en) * | 2015-03-19 | 2015-07-01 | 华南理工大学 | Intelligent grinding device for short chip removing and cooling by means of pulse electric smelting |
| CN105458427A (en) * | 2015-12-25 | 2016-04-06 | 华南理工大学 | Ultrasonic-vibration-assisted discharging and grinding device and method |
| CN114406372A (en) * | 2022-01-20 | 2022-04-29 | 北京科技大学 | Self-discharge auxiliary machining device and method for weak conductive material and application of self-discharge auxiliary machining device |
-
2015
- 2015-03-19 CN CN201520157634.8U patent/CN204584931U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104547248A (en) * | 2015-01-02 | 2015-04-29 | 袁福德 | Medicine for treating orthopedic disease, preparation method, test method and application of medicine |
| CN104742002A (en) * | 2015-03-19 | 2015-07-01 | 华南理工大学 | Intelligent grinding device for short chip removing and cooling by means of pulse electric smelting |
| WO2016145926A1 (en) * | 2015-03-19 | 2016-09-22 | 华南理工大学 | Intelligent grinding device for short-pulse electric-smelting chip removing and cooling |
| US9687952B2 (en) | 2015-03-19 | 2017-06-27 | South China University Of Technology | Intelligent grinding device for short pulse electrical melt chip removal cooling |
| CN105458427A (en) * | 2015-12-25 | 2016-04-06 | 华南理工大学 | Ultrasonic-vibration-assisted discharging and grinding device and method |
| CN114406372A (en) * | 2022-01-20 | 2022-04-29 | 北京科技大学 | Self-discharge auxiliary machining device and method for weak conductive material and application of self-discharge auxiliary machining device |
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Granted publication date: 20150826 Effective date of abandoning: 20171114 |