Transducer is adjusting the application in parameter of machine tool cutting

5kW, rated electric current is 3.

4A, rotate speed is 2840r/min, receive a law to be Y. Alter to decrease, reservation is original main shaft electric machinery is changeless, choose control of transducer of Fuji FAN5000G9S series. This model transducer has a function strong, noise low, operation is convenient wait for an advantage. According to the parameter of main shaft electric machinery, choose the FRN1 that nominal capacity matchs to it.

5G9S-4JE transducer (nominal capacity is 2.

8kVA, rated electric current is 3.

7A) . Control process graph shows the Electromechanical of main shaft report that experiments to use as 1 times to enrage control hookup. PLC outputs signal to give relay, of terminal of the X1 that relay controls transducer, FDW and CM terminal put through, disconnect, then controls the output frequency of transducer, rotate speed of implementation electric machinery is adjusted. When to prevent to be in transducer or electric machinery malfunction, breakdown expands, call the police transducer to often shut contact to string together receive in power source input end communication is received implement in dominating circuit, can in time cut off transducer power source. The functional parameter of transducer is inputted through exterior clavier face plate, the rotate speed of electric machinery by the functional parameter set of transducer. Graph Electromechanical of report of the 1 main shaft after changing one's costume or dress accuses hookup 2.

3 parameter set damages to prevent transducer and electric machinery, to develop the function of transducer adequately, must the functional parameter of correct set transducer. Frequency set chooses way of set of clavier face plate, specific frequency value combines an option by ON/OFF of terminal of X1, X2, X3, the article is terminal of X2, X3 disconnects, PLC output controls X1 terminal only, the functional parameter F20 that needs correspondence of set X1 terminal only so can (the frequency that frequency cannot exceed electric machinery decides frequency) . Quickly / the set of slowdown time is quickened / of slowdown time selected the fast sex of timing system, if choose shorter acceleration / slowdown time can improve productivity; But if choose to quicken time too short, the system cannot be started possibly or cross voltaic tripping operation; If slowdown time is too short, frequency drops too fast, dynamoelectric opportunity enters state of apply the brake, the likelihood produces overvoltage tripping operation, because this should be below the condition that does not affect treatment, logical choice is quickened / slowdown time value. Electric current of overload of set of overload electric current heats up overload relay for transducer electron behavioral cost, to protect electric machinery, should the rated electric current that set is electric machinery or be less than rating a bit. After instantaneous power cut automatic restart for safe for the purpose of, this parameter should be set after be instantaneous power cut means of not OK and automatic restart. The set that electric machinery pole counts to can show correct electromotor synchronism rotate speed, should correct set this parameter. Because asynchronous electromotor is rated,turn poor rate is minor, according to Ne ＝ 2840r/min, can judge the 3000r/min of ＝ of N1 of synchronous rotate speed that gives electric machinery, number of electric machinery pole is 2. Safe protection diagnoses a function of transducer of Fuji 5000G9S series to call the police oneself and protective function is all ready, when once protective function moves transducer interior to make and be brought about,parking plane position, relay leaves (shut) signal output, to prevent the amplification of breakdown, in calling the police transducer to often shut contact series connection to input the communication contactor of side to dominate circuit in transducer power source. Speed of 3 changes cutting experiments we undertook adjustment to electric machinery rotate speed (the cutting speed) that adjusts cutting tool namely, right life of cutting effect, cutting tool (point to in be being machined actually, the amount of workpiece of treatment of place of every razor blade) made detailed record. Through the experiment of a few months, reach in existing operating mode the condition falls, of rotate speed and surface roughness of spare parts surface, rotate speed and cutting tool life roughly curve, if pursue 2, the graph is shown 3 times. Graph 2 rotate speed and the concern plan that workpiece machines exterior surface roughness the relation test result of 3 rotate speed and bit life makes clear: Cutting speed is between 1700 ～ 1900r/min when, the integrated target of the service life of the exterior quality of the spare parts and razor blade is better, also can satisfy productivity requirement at the same time. We work speed in 1800r/min surely, the cutting effect that report comes out is better, and very stable. Contrast of 4 economic benefits is transformed in actual machine tool in, for managing, pull down transducer, with change synchronism tooth form the method of diameter of leather belt annulus reduces main shaft rotate speed, the made firm optimal rate in reaching a trial. In order to produce per year computation of head of 300 thousand crocks: Before transforming (N=2840r/min) : Spend bit amount: (300 thousand ÷ 3000 / piece) 4 ＝ of × spend amount 400 pieces: 400 × 800 yuan / piece after ＝ transforms 320 thousand yuan (N ＝ 1800r/min) : Spend bit amount: (300 thousand ÷ 4000 / piece) 4 ＝ of × spend amount 300 pieces: 300 × 800 yuan / piece ＝ 240 thousand yuan apparent, in order to produce per year computation of head of 300 thousand crocks, only this labour annual managing capital 80 thousand yuan, and change synchronous tooth form takes leather belt annulus to need 100 yuan or so only. We are opposite with same method the main shaft speed that machines conduit of additionally one pair of valve and housing washer bottom outlet undertook adjustment, affirmatory cutting speed is when 1400r/min cutting effect is best, every can process work 3800 or so. We apply transducer experiment method to adjust main shaft rotate speed on nearly 10 equipment, improve the service life of bit, it is company managing capital one year nearly 300 thousand yuan, obtained remarkable economic benefits. Practice of nearly two years proves: The operating mode condition that cutting tool uses is different, its reasonable cutting rate is different also. Will change cutting rate with transducer, economic benefits of make choice of is optimal cutting speed. After speed has chosen, with the change diameter of leather belt annulus is mixed (or) change the method of electric machinery will change cutting rate, already economy goes to the lavatory again, it is the method that machining industry rises a kind of treatment quality, effective that reduces finished cost. CNC Milling