CN102343634A - Overheat protecting device and method of motorized spindle and cutter - Google Patents
Overheat protecting device and method of motorized spindle and cutter Download PDFInfo
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- CN102343634A CN102343634A CN201010243412XA CN201010243412A CN102343634A CN 102343634 A CN102343634 A CN 102343634A CN 201010243412X A CN201010243412X A CN 201010243412XA CN 201010243412 A CN201010243412 A CN 201010243412A CN 102343634 A CN102343634 A CN 102343634A
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Abstract
The invention provides an overheat protecting device and an overheat protecting method of a motorized spindle and a cutter. The overheat protecting device comprises a temperature monitoring module, a coolant flow monitoring module and a control module, wherein the temperature monitoring module is used for monitoring the temperature of the motorized spindle and outputting a first signal; the coolant flow monitoring module is used for monitoring the flow of a coolant and outputting a second signal; the coolant is used for cooling the motorized spindle; and the control module is used for controlling the motorized spindle to stop operating or operating according to the preset mode when the first signal shows that the temperature of the motorized spindle is higher than a preset first threshold and/or the second signal shows that the flow of the coolant is lower than a preset second threshold. By using the technical scheme, the overheat protection for the motorized spindle is better realized, the work state of the motorized spindle is stabilized, the influence caused by overheat on work precision of a host machine is avoided, the work quality is improved and the motorized spindle is protected.
Description
Technical field
The present invention relates to the integrated circuit sealed in unit and make the field, particularly relate to a kind of overtemperature protection system, method for excessive heating protection and cutting machine of electric main shaft.
Background technology
Cutting machine is to encapsulate key equipment behind the semiconductor, and its effect is that wafer is divided into single circuit unit.The working mechanism of cutting machine is high-rate grinding, and electric main shaft is the execution unit of high-rate grinding.The electricity main shaft is with directly pack into the inside of spindle assemblies of stator, the rotor of motor, is also referred to as direct driving main shaft (Direct Drive Spindle) sometimes, is the built-in type electric machine main shaft.
In order to guarantee the wafer cut quality, require electric main shaft to possess high rotating speed, high accuracy and high stability, adopt static air pressure electricity main shaft usually.
When electricity main shaft such as static air pressure electricity main shaft run up; The thermal deformation that the temperature rise of electricity main shaft causes is one of key factor of the electric main shaft precision of influence; For reducing electric main shaft temperature rise; Normally in main shaft, be provided with cooling passage; Cool off through inserting cooling fluid, and to the monitoring of coolant rate and lacking of electric main shaft temperature rise monitoring consideration.The present inventor finds in realizing process of the present invention; Dynamo-electric main shaft method for excessive heating protection of the cutting of prior art and device are not enough to the consideration of electric main shaft temperature rise; And when electric main shaft temperature rise surpasses normal temperature; Do not make electric main shaft out of service like system, then will influence the precision of electric main shaft work even burn out electric spindle motor.
Summary of the invention
Embodiments of the invention provide a kind of overtemperature protection system, method for excessive heating protection and cutting machine of electric main shaft, to solve the technical problem that prior art does not take into full account the dynamo-electric main shaft overtemperature protection of cutting.
To achieve these goals, the present invention provides a kind of overtemperature protection system of electric main shaft, wherein, comprising:
The temperature monitoring module is used to monitor the temperature of electric main shaft, and exports first signal;
The coolant rate monitoring modular is used to monitor the flow of cooling fluid, and exports secondary signal, and said cooling fluid is used to cool off said electric main shaft;
Control module; When being used for temperature when the said electric main shaft of said first signal indicating and being higher than predetermined first threshold and/or said secondary signal and showing that the flow of said cooling fluid is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
Preferably, described overtemperature protection system, wherein, said temperature monitoring module comprises:
Temperature sensor is used to detect the temperature of said electric main shaft, and according to the 3rd corresponding signal of said detected temperature output;
The first filter circuit module is used for said the 3rd signal is carried out filtering;
The first amplifying circuit module is used for the signal of said first filter circuit module output is amplified;
The first comparison circuit module is used for the signal and the 3rd predetermined threshold value of the output of the more said first amplifying circuit module, when the value of the signal of said first amplifying circuit module output during greater than said the 3rd threshold value, exports said first signal.
Preferably, described overtemperature protection system, wherein, said coolant rate monitoring modular comprises:
Flow sensor is used to detect the flow of said cooling fluid, and according to the 4th corresponding signal of said detected coolant rate output;
The second filter circuit module is used for said the 4th signal is carried out filtering;
The second amplifying circuit module is used for the signal of said second filter circuit module output is amplified;
The second comparison circuit module is used for more said second amplifying circuit module and the 4th predetermined threshold value, when the value of the signal of said second amplifying circuit module output during less than said the 4th threshold value, exports said secondary signal.
Preferably, described overtemperature protection system, wherein, said control module comprises:
Processing module when being used for flow that temperature when said electric main shaft is higher than predetermined first threshold and/or said cooling fluid and being lower than the second predetermined threshold value, is sent first control signal;
Electricity main shaft drives module is used for according to said first control signal, controls the out of service or operation in the intended manner of said electric main shaft.
Preferably, described overtemperature protection system, wherein, said control module also comprises alarm module,
When said processing module is further used for flow that temperature at said electric main shaft is higher than predetermined first threshold and/or said cooling fluid and is lower than the second predetermined threshold value, send second control signal;
Said alarm module sends warning message according to said second control signal.
Preferably, described overtemperature protection system, wherein, said temperature sensor contacts with the motor stator that is built in said electric main shaft.
On the other hand, a kind of method for excessive heating protection of electric main shaft is provided, wherein, comprises:
Monitor the temperature of electric main shaft;
The flow of monitoring cooling fluid, said cooling fluid is used to cool off said electric main shaft;
When the flow that is higher than predetermined first threshold and/or said cooling fluid when the temperature of said electric main shaft is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
Preferably, described method for excessive heating protection, wherein, the step of the temperature of the electric main shaft of said monitoring comprises:
Temperature sensor is exported the 3rd signal according to the temperature of detected electric main shaft;
The first filter circuit module is carried out filtering to the 3rd signal of said temperature sensor output;
The first amplifying circuit module is amplified the signal of said first filter circuit module output;
The signal and the 3rd predetermined threshold value of the more said first amplifying circuit module output of the first comparison circuit module; When the value of the signal of said first amplifying circuit module output during greater than said the 3rd threshold value, the temperature of determining said electric main shaft is higher than said first threshold.
Preferably, described method for excessive heating protection, wherein, the step of the flow of said monitoring cooling fluid comprises:
Flow sensor is exported the 4th signal according to the flow of detected cooling fluid;
The second filter circuit module is carried out filtering to said the 4th signal;
The second amplifying circuit module is amplified the signal of said second filter circuit module output;
The signal and the 4th predetermined threshold value of the more said second amplifying circuit module output of the second comparison circuit module; When the value of the signal of said second amplifying circuit module output during less than said the 4th threshold value, the flow of determining said cooling fluid is lower than said second threshold value.
Another aspect provides a kind of cutting machine, comprising: electric main shaft, wherein, also comprise the overtemperature protection system that is connected with said electric main shaft, and said overtemperature protection system comprises:
The temperature monitoring module is used to monitor the temperature of electric main shaft, and exports first signal;
The coolant rate monitoring modular is used to monitor the flow of cooling fluid, and exports secondary signal, and said cooling fluid is used to cool off said electric main shaft;
Control module; When being used for temperature when the said electric main shaft of said first signal indicating and being higher than predetermined first threshold and/or said secondary signal and showing that the flow of said cooling fluid is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
A technical scheme in the technique scheme has following technique effect:
Temperature by utilizing temperature monitoring module monitors electricity main shaft, utilize the coolant rate monitoring module monitors to be used to cool off the flow of the cooling fluid of electric main shaft; In the time of can being lower than at least a situation in second threshold value at the flow that the temperature that electric main shaft occurs be higher than first threshold or cooling fluid; Operation to electric main shaft is controlled; Stop the operation of electric main shaft or control electric main shaft and move according to predetermined mode; Monitoring when having realized to electric main shaft temperature and coolant rate; Preferable realization to the overtemperature protection of electric main shaft; Stablized the duty of electric main shaft; Avoided the overheated host work precision that causes influenced; Improve work quality, and protected electric main shaft.
Description of drawings
Fig. 1 is the structural representation of overtemperature protection system of the electric main shaft of the embodiment of the invention;
Fig. 2 is the structural representation of overtemperature protection system of the electric main shaft of another embodiment of the present invention;
Fig. 3 is the structural representation of overtemperature protection system of the electric main shaft of further embodiment of this invention.
The specific embodiment
For technical problem, technical scheme and advantage that the embodiment of the invention will be solved is clearer, will combine accompanying drawing and specific embodiment to be described in detail below.
Fig. 1 is the structural representation of overtemperature protection system of the electric main shaft of the embodiment of the invention.Like Fig. 1, the overtemperature protection system of the electric main shaft of one embodiment of the invention comprises: the temperature monitoring module is used to monitor the temperature of electric main shaft, and exports first signal; The coolant rate monitoring modular is used to monitor the flow of cooling fluid such as cooling water, and exports secondary signal, and said cooling fluid is used to cool off said electric main shaft; Control module; When being used for temperature when the said electric main shaft of said first signal indicating and being higher than predetermined first threshold and/or said secondary signal and showing that the flow of said cooling fluid is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
The technical scheme of the embodiment of the invention; Do not take into full account the technical problem of overtemperature protection of the electric main shaft of cutting machine to prior art; Temperature through detecting electric main shaft simultaneously avoids cutting dynamo-electric main shaft with the flow of the cooling fluid that is used to cool off electric main shaft such as the electric in the course of the work main shaft temperature rise of static air pressure electricity main shaft is too high; Thereby avoided because the big thermal deformation of the too high electric main shaft that possibly cause of temperature rise of electric main shaft; Reduce cutting machine cutting quality; And even the serious consequence that electric spindle motor burns out takes place, played the effect of temperature electricity main shaft duty and the electric main shaft of protection.
Fig. 2 is the structural representation of overtemperature protection system of the electric main shaft of another embodiment of the present invention.Like Fig. 2, in the overtemperature protection system of this embodiment, the temperature monitoring module comprises: temperature sensor, be used to detect the temperature of said electric main shaft, and according to said the 3rd corresponding signal of temperature output that detects; The first filter circuit module is used for said the 3rd signal is carried out filtering; The first amplifying circuit module is used for the signal of said first filter circuit module output is amplified; The first comparison circuit module is used for the signal and the 3rd predetermined threshold value of the output of the more said first amplifying circuit module, when the value of the signal of said first amplifying circuit module output during greater than said the 3rd threshold value, exports said first signal.The coolant rate monitoring modular comprises: flow sensor, be used to detect the flow of said cooling fluid, and according to the 4th corresponding signal of said detected coolant rate output; The second filter circuit module is used for said the 4th signal is carried out filtering; The second amplifying circuit module is used for the signal of said second filter circuit module output is amplified; The second comparison circuit module is used for more said second amplifying circuit module and the 4th predetermined threshold value, when the value of the signal of said second amplifying circuit module output during less than said the 4th threshold value, exports said secondary signal.
Exemplarily, temperature sensor can be voltage signal or current signal according to the signal of detected temperature output, and the first corresponding comparison circuit module can be voltage comparator or current comparator.Similarly, the coolant rate sensor can be voltage signal or current signal according to the signal of detected coolant rate output, and the second corresponding comparison circuit module can be voltage comparator or current comparator.
Preferably; In the overtemperature protection system of the electric main shaft of the embodiment of the invention; Control module comprises: processing module, when being used for flow that temperature when said electric main shaft is higher than predetermined first threshold and/or said cooling fluid and being lower than the second predetermined threshold value, send first control signal; Electricity main shaft drives module is used for according to said first control signal, controls the out of service or operation in the intended manner of said electric main shaft.Exemplarily, processing module can realize through a computer such as PC; Electricity main shaft drives module can be an electric spindle driver, and electric spindle driver is connected with electric main shaft.
Further; In other embodiments of the invention; Control module also comprises alarm module, when processing module is further used for flow that temperature at said electric main shaft is higher than predetermined first threshold and/or said cooling fluid and is lower than the second predetermined threshold value, sends second control signal; Alarm module sends warning message according to said second control signal.
Fig. 3 is the structural representation of overtemperature protection system of the electric main shaft of further embodiment of this invention.Like Fig. 3, in this example, temperature monitoring module and coolant rate monitoring modular all comprise: filter circuit, amplifying circuit and comparison circuit; Control module comprises: processor such as PC, electric spindle driver, alarm; The electricity spindle driver is connected with electric main shaft, can control the operation of electric main shaft according to the control signal that PC sends, as stop the operation of electric main shaft.
Like Fig. 3, in the temperature monitoring module 301, filter circuit (first filter circuit) comprising: resistance R 11, resistance R 13, resistance R 14, capacitor C 11 and first wave filter 302.Exemplarily, this first wave filter is the LM6132BIN operational amplifier.One end of resistance R 11 is connected with temperature sensor, and the other end is connected with the first input end (positive input terminal) of operational amplifier, an end ground connection of capacitor C 11, and the other end is connected with the first input end of operational amplifier; One end of resistance R 13 is connected with the output of operational amplifier, and the other end is connected with second input (negative input end) of operational amplifier; One end of resistance R 14 is connected with the negative input end of operational amplifier, and the other end is the input of voltage as a reference; The power end of operational amplifier (Vcc) connects power supply.Amplifying circuit (first amplifying circuit) comprising: resistance R 15, resistance R 16, resistance R 17 and first amplifier 303.Exemplarily, this first amplifier is the M54565 amplifier.The output of first filter circuit is connected with the first input end (positive input terminal) of first amplifier through resistance R 15; One end ground connection of resistance R 16, the other end are connected with second input (negative input end) of amplifier; Resistance R 17 with an end be connected with the output of operational amplifier; The other end is connected with second input (negative input end) of operational amplifier, and the power end of amplifier (Vcc) connects power supply.Comparison circuit (first comparison circuit) comprising: resistance R 18, resistance R 19 and first comparator 304.Exemplarily, this first comparator is the LM393 comparator.The output of first amplifying circuit is connected with the first input end (positive input terminal) of first comparator through resistance R 18; One end of resistance R 19 is connected with second input (negative input end) of first comparator, and the other end is the input of voltage as a reference; The power end of first comparator (Vcc) connects power supply.
The signal of the temperature sensor output of electricity main shaft is input to filter circuit through resistance R 11, amplifies, passes through comparison circuit again through amplifying circuit, and comparative result is input to PC.
The reference voltage of the first comparator LM393 (the 3rd threshold value) pre-sets according to the relation of temperature and voltage and the job requirement of cutting dynamo-electric main shaft.When the temperature of electric main shaft surpasses setting value (first threshold), comparison circuit output high level signal.High level signal is input to PC, and PC control alarm sends alarm signal, and sends and stop electric main shaft run signal and give electric spindle driver, and electric spindle driver can stop the operation of electric main shaft according to this signal.
Like Fig. 3, in the coolant rate monitoring modular 305, filter circuit (second filter circuit) comprising: resistance R 21, resistance R 22, resistance R 23, resistance R 24, capacitor C 21, capacitor C 22 and second wave filter 306.Exemplarily, second wave filter is the LM6132BIN operational amplifier.One end of resistance R 11 is connected with temperature sensor, being connected in series of the other end and resistance R 22, and the other end of resistance R 22 is connected with the first input end of operational amplifier (positive input terminal); One end ground connection of capacitor C 21, the other end is connected with an end of resistance R 21; One end ground connection of capacitor C 22, the other end is connected with the first input end of operational amplifier; One end of resistance R 23 is connected with the output of operational amplifier, and the other end is connected with second input (negative input end) of operational amplifier; One end of resistance R 24 is connected with the negative input end of operational amplifier, and the other end is the input of voltage as a reference; The power end of operational amplifier (Vcc) connects power supply.Amplifying circuit (second amplifying circuit) comprising: resistance R 25, resistance R 26, resistance R 27 and second amplifier 307.Exemplarily, this second amplifier is the M54565 amplifier.The output of second filter circuit is connected with the first input end (positive input terminal) of second amplifier through resistance R 25; One end ground connection of resistance R 26, the other end are connected with second input (negative input end) of amplifier; Resistance R 27 with an end be connected with the output of operational amplifier; The other end is connected with second input (negative input end) of operational amplifier, and the power end of amplifier (Vcc) connects power supply.Comparison circuit (second comparison circuit) comprising: resistance R 28, resistance R 29 and second comparator 308.Exemplarily, this second comparator is the LM393 comparator.The output of second amplifying circuit is connected with the first input end (positive input terminal) of second comparator through resistance R 28; One end of resistance R 29 is connected with second input (negative input end) of second comparator, and the other end is the input of voltage as a reference; The power end of second comparator (Vcc) connects power supply.
After the filtering of signal input filter circuit, amplifying circuit that the coolant rate sensor will detect output was amplified, through second comparison circuit, comparative result was input to PC again.
The reference voltage of second comparator (the 4th threshold value) pre-sets according to the relation of flow and voltage and the job requirement of cutting dynamo-electric main shaft, when flow during less than setting value (second threshold value), and second comparison circuit output high level signal.High level signal is input to PC, and PC control alarm sends alarm signal, and sends and stop electric main shaft run signal and give electric spindle driver, and electric spindle driver can stop the operation of electric main shaft according to this signal.
Among Fig. 3, electric spindle driver is called for short driver; The electricity main shaft abbreviates main shaft as.
Obviously, first, second filter circuit is not limited to the implementation among Fig. 3, and other filter circuit of prior art also can be used for realizing first, second filter circuit as the embodiment of the invention.Equally, first, second amplifying circuit is not limited to the implementation among Fig. 3, and other amplifying circuit of prior art also can be used for realizing first, second amplifying circuit as the embodiment of the invention; First, second comparison circuit is not limited to the implementation among Fig. 3, and other comparison circuit of prior art also can be used for realizing first, second comparison circuit as the embodiment of the invention.
In the realization of the embodiment of the invention, can on the shell of electric main shaft, hole, the main shaft temperature sensor probe is extend in the hole, contacts with the motor stator of electric main shaft with built-in.
In the realization of the embodiment of the invention; The flow sensor of cooling fluid such as cooling water can be installed on the frame of cutting machine; The main shaft cooling fluid is imported main shaft internal coolant channels such as cooling-water duct through flow sensor, and discharges through main shaft cooling water discharge outlet, realizes the cooling of main shaft.
The embodiment of the invention also discloses a kind of method for excessive heating protection of electric main shaft, comprise the steps: to monitor the temperature of electric main shaft; The flow of monitoring cooling fluid, said cooling fluid is used to cool off said electric main shaft; When the flow that is higher than predetermined first threshold and/or said cooling fluid when the temperature of said electric main shaft is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
Preferably; In the method for excessive heating protection of this embodiment; Detect through the temperature of temperature sensor electric main shaft; And export first signal according to detected temperature; Detect through the temperature of coolant rate sensor electric main shaft; And according to detected flow output secondary signal; When the temperature of the said electric main shaft of first signal indicating is higher than predetermined first threshold and/or said secondary signal and shows that the flow of said cooling fluid is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
Preferably, above-mentioned first, second signal can be voltage signal or current signal.
Preferably, in the method for excessive heating protection of the electric main shaft of the embodiment of the invention, the step of monitoring the temperature of electric main shaft comprises the steps: again
Temperature sensor is exported the 3rd signal according to the temperature of detected electric main shaft;
The first filter circuit module is carried out filtering to the 3rd signal of said temperature sensor output;
The first amplifying circuit module is amplified the signal of said first filter circuit module output;
The signal and the 3rd predetermined threshold value of the more said first amplifying circuit module output of the first comparison circuit module; When the value of the signal of said first amplifying circuit module output during greater than said the 3rd threshold value, the temperature of determining said electric main shaft is higher than said first threshold.
Preferably, in the method for excessive heating protection of the electric main shaft of the embodiment of the invention, the step of the flow of monitoring cooling fluid comprises the steps: again
Flow sensor is exported the 4th signal according to the flow of detected cooling fluid;
The second filter circuit module is carried out filtering to said the 4th signal;
The second amplifying circuit module is amplified the signal of said second filter circuit module output;
The signal and the 4th predetermined threshold value of the more said second amplifying circuit module output of the second comparison circuit module; When the value of the signal of said second amplifying circuit module output during less than said the 4th threshold value, the flow of determining said cooling fluid is lower than said second threshold value.
The embodiment of the invention also discloses a kind of cutting machine, comprising: electric main shaft, wherein, also comprise the overtemperature protection system that is connected with said electric main shaft, said overtemperature protection system comprises:
The temperature monitoring module is used to monitor the temperature of electric main shaft, and exports first signal;
The coolant rate monitoring modular is used to monitor the flow of cooling fluid, and exports secondary signal, and said cooling fluid is used to cool off said electric main shaft;
Control module; When being used for temperature when the said electric main shaft of said first signal indicating and being higher than predetermined first threshold and/or said secondary signal and showing that the flow of said cooling fluid is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
Preferably, the cutting machine of the embodiment of the invention, the temperature monitoring module comprises: temperature sensor, be used to detect the temperature of said electric main shaft, and according to the 3rd corresponding signal of said detected temperature output; The first filter circuit module is used for said the 3rd signal is carried out filtering; The first amplifying circuit module is used for the signal of said first filter circuit module output is amplified; The first comparison circuit module is used for the signal and the 3rd predetermined threshold value of the output of the more said first amplifying circuit module, when the value of the signal of said first amplifying circuit module output during greater than said the 3rd threshold value, exports said first signal;
Preferably, the cutting machine of the embodiment of the invention, said coolant rate monitoring modular comprises: flow sensor, be used to detect the flow of said cooling fluid, and according to the 4th corresponding signal of said detected coolant rate output; The second filter circuit module is used for said the 4th signal is carried out filtering; The second amplifying circuit module is used for the signal of said second filter circuit module output is amplified; The second comparison circuit module is used for more said second amplifying circuit module and the 4th predetermined threshold value, when the value of the signal of said second amplifying circuit module output during less than said the 4th threshold value, exports said secondary signal.
Other embodiment of above-mentioned overtemperature protection system can repeat no more at this with reference to above to the description of the embodiment of the overtemperature protection system of electric main shaft.
The above is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the said principle of the embodiment of the invention; Can also make some improvement and retouching, these improvement and retouching also should be considered as protection scope of the present invention.
Claims (10)
1. the overtemperature protection system of an electric main shaft is characterized in that, comprising:
The temperature monitoring module is used to monitor the temperature of electric main shaft, and exports first signal;
The coolant rate monitoring modular is used to monitor the flow of cooling fluid, and exports secondary signal, and said cooling fluid is used to cool off said electric main shaft;
Control module; When being used for temperature when the said electric main shaft of said first signal indicating and being higher than predetermined first threshold and/or said secondary signal and showing that the flow of said cooling fluid is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
2. overtemperature protection system according to claim 1 is characterized in that, said temperature monitoring module comprises:
Temperature sensor is used to detect the temperature of said electric main shaft, and according to the 3rd corresponding signal of said detected temperature output;
The first filter circuit module is used for said the 3rd signal is carried out filtering;
The first amplifying circuit module is used for the signal of said first filter circuit module output is amplified;
The first comparison circuit module is used for the signal and the 3rd predetermined threshold value of the output of the more said first amplifying circuit module, when the value of the signal of said first amplifying circuit module output during greater than said the 3rd threshold value, exports said first signal.
3. overtemperature protection system according to claim 1 and 2 is characterized in that, said coolant rate monitoring modular comprises:
Flow sensor is used to detect the flow of said cooling fluid, and according to the 4th corresponding signal of said detected coolant rate output;
The second filter circuit module is used for said the 4th signal is carried out filtering;
The second amplifying circuit module is used for the signal of said second filter circuit module output is amplified;
The second comparison circuit module is used for more said second amplifying circuit module and the 4th predetermined threshold value, when the value of the signal of said second amplifying circuit module output during less than said the 4th threshold value, exports said secondary signal.
4. overtemperature protection system according to claim 1 is characterized in that, said control module comprises:
Processing module when being used for flow that temperature when said electric main shaft is higher than predetermined first threshold and/or said cooling fluid and being lower than the second predetermined threshold value, is sent first control signal;
Electricity main shaft drives module is used for according to said first control signal, controls the out of service or operation in the intended manner of said electric main shaft.
5. according to claim 1 or 4 described overtemperature protection systems, it is characterized in that said control module also comprises alarm module,
When said processing module is further used for flow that temperature at said electric main shaft is higher than predetermined first threshold and/or said cooling fluid and is lower than the second predetermined threshold value, send second control signal;
Said alarm module sends warning message according to said second control signal.
6. overtemperature protection system according to claim 2 is characterized in that, said temperature sensor contacts with the motor stator that is built in said electric main shaft.
7. the method for excessive heating protection of an electric main shaft is characterized in that, comprising:
Monitor the temperature of electric main shaft;
The flow of monitoring cooling fluid, said cooling fluid is used to cool off said electric main shaft;
When the flow that is higher than predetermined first threshold and/or said cooling fluid when the temperature of said electric main shaft is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
8. method for excessive heating protection according to claim 7 is characterized in that, the step of the temperature of the electric main shaft of said monitoring comprises:
Temperature sensor is exported the 3rd signal according to the temperature of detected electric main shaft;
The first filter circuit module is carried out filtering to the 3rd signal of said temperature sensor output;
The first amplifying circuit module is amplified the signal of said first filter circuit module output;
The signal and the 3rd predetermined threshold value of the more said first amplifying circuit module output of the first comparison circuit module; When the value of the signal of said first amplifying circuit module output during greater than said the 3rd threshold value, the temperature of determining said electric main shaft is higher than said first threshold.
9. according to claim 7 or 8 described method for excessive heating protection, it is characterized in that the step of the flow of said monitoring cooling fluid comprises:
Flow sensor is exported the 4th signal according to the flow of detected cooling fluid;
The second filter circuit module is carried out filtering to said the 4th signal;
The second amplifying circuit module is amplified the signal of said second filter circuit module output;
The signal and the 4th predetermined threshold value of the more said second amplifying circuit module output of the second comparison circuit module; When the value of the signal of said second amplifying circuit module output during less than said the 4th threshold value, the flow of determining said cooling fluid is lower than said second threshold value.
10. cutting machine, comprising: electric main shaft is characterized in that also comprise the overtemperature protection system that is connected with said electric main shaft, said overtemperature protection system comprises:
The temperature monitoring module is used to monitor the temperature of electric main shaft, and exports first signal;
The coolant rate monitoring modular is used to monitor the flow of cooling fluid, and exports secondary signal, and said cooling fluid is used to cool off said electric main shaft;
Control module; When being used for temperature when the said electric main shaft of said first signal indicating and being higher than predetermined first threshold and/or said secondary signal and showing that the flow of said cooling fluid is lower than the second predetermined threshold value, control the out of service or operation in the intended manner of said electric main shaft.
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| CN109131729A (en) * | 2017-06-15 | 2019-01-04 | 北京新宇航测控科技股份有限公司 | The early warning system of naval vessel propeller |
| CN112496997A (en) * | 2019-09-16 | 2021-03-16 | 东京毅力科创株式会社 | Processing device |
| CN114161225A (en) * | 2021-12-10 | 2022-03-11 | 上海诺倬力机电科技有限公司 | Five first intelligent feedback devices and machine tool |
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| CN2868594Y (en) * | 2005-11-22 | 2007-02-14 | 沈阳仪表科学研究院 | Solar cell substrate cutting machine |
| CN101729009A (en) * | 2008-10-21 | 2010-06-09 | 深圳万讯自控股份有限公司 | Control system of direct current motor |
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| CN103707428A (en) * | 2013-12-31 | 2014-04-09 | 镇江市港南电子有限公司 | Monitoring device of silicon wafer collection equipment |
| CN109131729A (en) * | 2017-06-15 | 2019-01-04 | 北京新宇航测控科技股份有限公司 | The early warning system of naval vessel propeller |
| CN112496997A (en) * | 2019-09-16 | 2021-03-16 | 东京毅力科创株式会社 | Processing device |
| CN114161225A (en) * | 2021-12-10 | 2022-03-11 | 上海诺倬力机电科技有限公司 | Five first intelligent feedback devices and machine tool |
| CN114161225B (en) * | 2021-12-10 | 2024-04-26 | 上海诺倬力机电科技有限公司 | Five spindle nose intelligent feedback devices and machine tool |
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Application publication date: 20120208 |