I'd like two enclosed skylights in the yard. Push and break with a wire rod. Screw 1.5M, 20 mm in diameter, pitch 4 mm. The effective stroke is about 1.4M. Load 50kg less than. Horizontal moving belt wheel. How should the motors be matched?
The motor is no more than speed than the speed reducer is the machine such as motor speed than 1 8 800 revolutions per minute after the speed reducer is 100 out of turn the specific use of motor and reducer according to the actual situation of your own gear ratio is larger, the greater the stress.
2, now can choose two motor about 2840 rpm, speed reducer 3:1 actual closing time is about 22 seconds3, because it is horizontal movement, so thrust and load 50KG is not directly related, thrust and acceleration, friction coefficient is directly relatedHere first make the assumption that 20 kg thrust can be completed to promote the level of. That is to say, the contact position between the nut and the screw rod is 200NScrew diameter 20mm, 10mm radius, the radius position of thrust 200N can be deduced from the standard meters of cattle.According to the principle of lever reducer output torque of F= (200*10) /1000=2. (1000 meters cattle is 1 meters)4, reducer output 2 cattle. M, 3:1 ratio reducer friction factor (use coefficient) from 0.6 obtained input torque =1.1 meters of cattle.5, according to the power and torque formula torque =9550* power / speed (power KW, speed n/ minutes)=0.33KW 330W power P=1.1*2840/9550 for insurance (for 20 kilograms of desirable large thrust for valuation).Results: 500W-600W 3:1 ratio motor motor series 2 (2850 RPM) roof is closed for 22 secondsWant to speed up the closing time, can reduce the speed ratio, improve the power of the motor
First, according to what you say, to determine some parameters, and finally to deduce the matching motor, the specific operation process is as follows.First determine the speed reducer and motor speed premise1.4M travel, 4MM obtained 350 logic turn to complete, assuming 20 seconds to close the sunroof, namely 20 seconds 350.Further, the speed at the end of the reducer is 350*60/20=1050, and the speed is 3000 according to the classification speed of the motorThe ratio of 2:1 or 3:1.
