Double motor drive device in the application of the machine tool main drive

Double motor drive device in the application of the machine tool main drive - 2020 07 - 02 Yang Jizhen ( Lanzhou university of technology) Abstract: according to the requirements of the users to use, in the machine tool main drive spindle speed scope is: 0. 1 ~ 800 RPM, or Rn = 8000, to meet the speed range. By a main motor and grading series gearbox is cannot meet this requirement, so designed a double motor drive device, make the output shaft speed range wide, can meet the needs of machine when processing speed range is larger. 1. Foreword to the machine tool main drive is usually the main motor by ordinary triangle of triangle is passed on to the grading transmission wheel drive or by a kind of main motor and grading series gearbox, the speed of transmission device structure can meet the general requirements, but if you want more speed range, the original of the transmission device is far from satisfied. Therefore, in order to avoid the shortcomings of existing technology, provides a kind of double motor drive device, thus effectively solves the defects that exist in the existing technology. 2. Double motor drive device profile according to the requirements of the users to use, in the process of machine tool processing, according to user requirements have a large amount of cutting volume overload and small cutting cutting precision cutting, but as a result of motor performance factors, can only meet a way of processing, so designed a double motor drive device, make the output shaft speed range wide, can meet the needs of machine when processing speed range is larger. Double motor drive machine tool main drive device mainly consists of the following parts: 1. V belt, 2. The triangle wheel, 3. 15 kw variable frequency motor, 4. Straight teeth gear, 5. The handle bar, 6. CAM, 7. Leverage, 8. Straight teeth gear, 9. Helical gear reducer, 10. 3 kw variable frequency motor, 11. Seats, 12. Travel switch. 3. The design of double motor drive device 3. 1 double motor drive device structure is shown in figure 1 common horizontal lathe double motor drive device, including the first frequency conversion motor 3 set on the car seat 11, its characteristic is that the first frequency conversion power output shaft of the motor 3 out at both ends, one end of the first 3 power frequency conversion motor output shaft is equipped with belt wheel 2, the other end of the first 3 power frequency conversion motor output shaft through a clutch and deceleration device connected to the power output shaft of the 9, 11 installed in the car seat on the 9 10 second frequency conversion motor and speed reducer is connected, car seat equipped with clutch on the corresponding CAM 6, 11 CAM 6 sets the handle bar on 5 and leveraged 7. One end of the first 3 power frequency conversion motor output shaft is equipped with belt round 2, the other end of the first 3 power frequency conversion motor output shaft through a clutch and deceleration device connected to the power output shaft of the 9, 11 installed in the car seat on the 9 10 second frequency conversion motor and speed reducer is connected, car seat equipped with clutch on the corresponding CAM 6, 11 CAM 6 sets the handle bar on 5 and leveraged 7. Clutch included in power output shaft of the speed reducer, nine straight tooth gear 8 and set up on the first 3 power frequency conversion motor output shaft within the straight tooth gear 4, straight teeth internal gear with straight teeth 4 8 relatively set external gear, straight teeth gear set in 8 and leveraged 7 corresponding slot. The first frequency conversion motor 3 10 to the power of power is greater than the second frequency conversion motor, car seat on 11 also has 12 and 6 corresponding CAM travel switch. 3. 2 double motor drive device of calculation due to the first 3 and 10 second frequency conversion motor frequency conversion motor speed was a category four series, the output speed range is 150 ~ 1500 r/min, so the first 3 frequency conversion motor output torque is: when using the second frequency conversion motor 10, 9 can connect reducer, gear motor when the reduction ratio of 1:10, can get the output shaft torque is: as a result, the speed of the motor output in 15 ~ 1500 r/min, enlarge the using range of the frequency conversion motor. Through the spindle box of slow down again, can achieve the spindle speed of 0. 1 ~ 800 RPM, which greatly improve the performance of the machine tool. 3. 3 using the method of double motor drive device is shown in figure 1, in the process of machining, need heavy cutting, the frequency conversion power output shaft of the motor 3 out at both ends, one end of the first 3 power frequency conversion motor output shaft is equipped with belt wheel 2, at this point, through the handle bar 5 turn CAM 6 which touches the switch 12 3 separate movement to achieve the first frequency conversion motor, by 2 directly by belt pulley will power is passed on to the main shaft, realize the overloading cutting machine tool, need small amount of cutting precision cutting, the other end of the first 3 power frequency conversion motor output shaft through a clutch and deceleration device connected to the power output shaft of the 9, 11 installed in the car seat on the 9 10 second frequency conversion motor and speed reducer is connected, at this point, through the handle bar 5 turn CAM 6 12, which touches the switch at the same time, the other end of the lever 7 inserted straight teeth gear 8 sets of grooves, realize the first frequency conversion motor 3 and the linkage of the 10 second frequency conversion motor, control the clutch and separation, small amount of cutting precision cutting. 4. Conclusion the double motor drive device, with the method of series double motor, to realize variable speed requirements, the spindle speed range is divided into two gear, low speed and high speed rotation speed to achieve the low gear is: 0. 1 ~ 8 RPM, high gear is: 5 ~ 800 RPM, its operation is simple, easy to use. Source: the servo and the movement control no. 4