The seams of the internal threads are eliminated by the reverse rotation while producing few chips , and uniform threads diameter is achieved even though the hole diameter is uneven 正轉時擠壓出內螺紋,逆轉時切去內徑部的縫隙(有微量碎屑排出) ,從而完成加工。下孔徑尺寸即使零亂,也可以做出內徑尺寸均一的螺紋。
In this paper , the design of electric forklift driving controller is demonstrated . otherwise , can is added into this controller , so as to build up can networks with other modules equipped with can controllers . this paper is composed of 7 chapters : in the first chapter , the background of the paper is introduced ; in the second chapter , the structure of electric forklift is demonstrated ; in the third chapter , first the math model of series motor is found , then the motor is controlled as improved p1d control rule ; in the fourth chapter , the principle and realization method of forward and reverse rotation and back - feed brake are explained ; in the fifth chapter , the principle of can and design of application layer in can are illuminated ; in the sixth chapter , the principle of e2prom is clarified ; in the last chapter , summary of the whole paper is given , and prospect in this field is made 全文共分七章:第一章緒論,介紹了論文背景;第二章,系統(tǒng)綜述,介紹了電動叉車的整車結構;第三章,串勵電機的建模、改進的pid算法及其軟硬件實現(xiàn),首先根據(jù)串勵電機的機電特性推導出數(shù)學模型,然后在此基礎上結合pid控制規(guī)律對電機進行控制;第四章,串勵電機的正反轉及回饋制動,介紹了實現(xiàn)電機正反轉及回饋制動的原理及方法;第五章, can網(wǎng)絡實現(xiàn)模塊間通訊,介紹了can總線原理及can總線應用層設計;第六章,用串行e ~ 2prom實現(xiàn)參數(shù)設定,介紹了串行e ~ 2prom的原理;結束語,對本論文進行了總結,并對該領域的發(fā)展進行了展望。
Strong and high effective mixing of swzzero gravity particle mixer can meet your demand . two mixing axles make a equal speed and reverse rotation in horizontal tube . oars on mixing axle make the materials do radial motion , circular motion and axial motion . in a short time , the particle can be stirred homoginously . nozzel on cover of tube can be used when the solid is mixed with liquid 無重力粒子混合機(以下簡稱無重力)以強烈、高效混合而來滿足用戶需求,臥式筒體內兩根攪拌軸等速反向旋轉,攪拌軸等速反旋轉,攪攔軸上特殊布置的漿葉確保物料徑向、環(huán)向、軸向三向運動,形成復合循環(huán),在極短的時間內達到均勻混合,筒蓋上布置霧化噴嘴供你固液混合時使用。