Designment And Experiment Of The Core Components Of Poplar Cuttings Cutting Machine

At present,the hard branch cutting seedling of crops in the production process of cutting is mostly used by artificial cutting in our country. In order to realize the naked root, the hard branch cutting seedling of crops in the production process of the mechanization of the cutting process, research the cutting machine for the bare root, hardwood cutting. Based on the Poplar Cuttings, design the device of separating and taking seeding, test of trial production, also design the punching for cuttings,for the cutting machine research and development to do preparatory work.The specific research contents and conclusions are as follows:(1)Put forward three kinds of Poplar Cuttings seedlings seedling fetching device program. Test bench trial manufacture and test analysis of second kinds of schemes of drum type sub seedling. When roller diameter is 160 mm, speed 2.6 rad/s, dial the tooth 6 (along the direction of drum diameter is symmetrical, uniform layout),10 mm dial the tooth depth, can separate the 5-10 root cutting smoothly. When roller diameter is 450 mm, speed 1.7 rad/s, dial the tooth 20 (roller diameter direction is symmetrical, uniform layout), dial the tooth depth 10 mm, can finish cutting points task. But a poor job stability, hello separating and taking inconvenience.(2)the third way electromagnetic vibration points separating and taking seeding device test bench test and test conclusions:when the roller speed 41 r/min, electromagnetic vibrator used 0.8 mm half wave, amplitude of electromagnetic vibration points separating and taking seeding device test rig of poplar can be smoothly from the hopper discharge and in the process of vibrating conveyer is arranged into orderly queue(3)Using Proe/E part of poplar points separating and taking seeding plant hopper for 3 d modeling, interference detection, optimization of parts size and position to avoid interference phenomenon in preparation for the trial test rig. Hopper consists of hopper, ZX-37GB555 miniature dc gear motor and speed, roller, gear transmission system, etc. Through analysis of the hopper design is reasonable, the length of the motion components running smoothly, no interference phenomenon(4)Scheme of two kinds of poplar cuttings punching device, to design two swinging rod type punching device. It contains frame, swinging rod, connecting rod, cylinder, bolt, such as soil retaining plate parts design. Extreme position Angle of swinging rod institutions in 30°,185 mm,1 r/s crank rotational speed(5)Using Proe/E swinging rod type punching device for 3 D modeling, analysis, holder of sports position, velocity and acceleration change over time. Validation draw holder make fast-returning characteristic of a reciprocating linear motion and stroke is 185 mm, travel speed ratio coefficient K= 1.4, for the further analysis of inertial force, vibration, and provide data support dynamic properties.(6)Using NASYS swinging rod, cylinder statics analysis the limit position. Swinging rod long hole under lateral stress concentration, maximum stress 52.829 Mpa; Maximum strain occurs in the swinging rod and connecting rod joint is 0.205 mm. Holder of stress concentration in the lower part of the ear canal part and rectangular tube welding; Maximum strain occurred in a maximum of 0.236 mm at the bottom of the holder. Therefore in manufacturing rocker, rocker when holder slotted hole parts processing and guarantee the insert tube of ear canal and rectangular tube welding quality welds.