高原某地区生态产业化与产业生态化协同发展研究

基于高原某地区2014—2018年的相关数据,通过构建评价指标体系,采用熵值法与耦合协调度评价模型对高原某地区近5年生态产业化、产业生态化相关指标进行测量,计算出其耦合发展度。通过数据论证发现了该区域发展过程中暴露出的问题,提出现阶段该区域实现生态产业化与产业生态化协调发展的对策,即发展农业新生产力、强化信息产业、发展静脉集群产业园区、完善生态补偿机制等。

电机定转子级进模料带挠曲悬弧控制

围绕电机定转子冲片的精密制造开展研究,针对电机定、转子冲片级进模在送进过程中发生料带挠曲的问题,利用有限元方法对比分析了单排、双排排样及错距双排在自然重力状态下的挠曲,在此基础上进一步研究了料带宽度对最大挠曲的影响,同时研究了各工序级进模料带处于不同镂空率时的挠曲情况,得到全工序中料带挠曲程度分布。最后探究了弹性浮顶位置对挠曲度的影响,利用有限元数值建模分析了弹性浮顶位置间距对挠曲度的影响,优化了弹性浮动式支撑结构的布局及合适间距。结合有限元分析及现场试模,确定级进模的浮顶位置分布,验证了浮顶装置对控制板料挠曲的有效性。

原料药工业化工艺中的安全评估

文章从物料性质、反应平衡、后处理操作和三废处理等方面对原料药工业化工艺进行了安全评估,并依据评估风险给出了相应防范建议。旨在提升从业人员安全意识,提高生产安全性,保障人员生命安全,最大限度降低财产损失。有效引导工艺研发者在工艺开发前期规避安全风险,开发更适合工业化生产的绿色环保工艺。

Design of an Automatic Loading-and-Unloading Manipulator

In order to achieve workpiece′s automatic loading-and-unloading, this paper designs a manipulator. Use the vacuum chuck mechanism to achieve the function of reclaiming and the cylinder rails to achieve the function of pick-feeding materials. PLC control technology is applied to control system and improve the efficiency and reduce human labor.To ensure the strength,Solidworks simulation performs thestress and strain analysis to verify material strength.

锥形电机定子内锥面校形失效分析及校形装置设计

针对生产现场部分定子冲片叠铆内锥面校形失效问题,从冲片生产工艺、伺服数控分度冲切工装模具刃口形式及冲切断面状态变化等分析,得出冲切线毛刺变化、冲片翘曲状态及冲片错位叠压等因素的不确定性是导致冲片叠铆后层间综合摩擦系数不一致性的根本原因,同时叠铆预压过程中会产生弹性垫片效应,出现轴向弹性预压紧力,另外锥形校形模具(塞棒模具)作用于内锥面的压力存在轴向分力,上述合力所产生的片间摩擦力有可能大于塞棒模具施加在冲片上的水平分力,导致校形失效。基于上述研究,重新设计了一套适用于自动生产线的气动式外圆柱面校正装置,避免了校形模具对冲片的轴向压力,达到了自动找正的冲片同轴校形的目的,研究结论解决了实际生产中的工艺可靠性问题。

Design of Automatic Feeding-and-Unloading Rotary Manipulator of Punching Machine

In recent years, punching technology of our country is developing fast. The proportion of hand feeding punching processing has gradually been replaced by automatic feeding and unloading mechanism, due to the low efficiency, poor security. In this paper, we design an automatic feeding and unloading system of the punching sheets of motor. The rotary manipulator consists of the transmission device, the mechanical arm device, the material suction device, the raw material automatic lifting device and so on. Adopting the rodless cylinder as the main actuator, the system realizes these beat movements of continuous lifting up, centering, conveying, unloading. According to the working principle and mechanical structure of the components in the system, the function and application of each component in the whole feeding-and-unloading system are analyzed in this paper.

A Star-Wheel Stair-Climbing Wheelchair

In order to achieve a wheelchair climb stairs function, this paper designs a star-wheel stair-climbing mechanism. Through the effect of the lock coupling, the star-wheel stair-climbing mechanism is formed to be fixed axis gear train or planetary gear train achieving flat-walking and stair-climbing functions. Crossing obstacle analysis obtains the maximum height and minimum width of obstacle which the wheelchair can cross. Stress-strain analysis in Solidworks simulation is performed to verify material strength.

Design of Composite Dies for Motor Punching

This paper aims to design punching die of the stator and rotor. By analyzing and comparing, we determine the better processing program. Not only to ensure the precision and dimensional requirements, but also to improve efficiency. Through detailed analysis of the process, this paper determines the structure of two composite molds. The dimensions of its convex and concave die edge size and other parts are calculated and checked. Finally this paper completes the design of two molds.

新型稳定耐温绝缘密封材料制备与评测

变压器漏油严重影响电力系统安全。基于漏油原因分析及其堵漏方案,自制了以环氧树脂E51为基体的绝缘密封材料,评测了填充物碳酸钙对堵漏材料性能的影响,并对绝缘密封材料进行了热胀冷缩实验。评测表明,碳酸钙对控制堵漏材料的流淌性具有良好效果。当碳酸钙的质量分数达到10%时,堵漏材料的流淌性大大降低;当碳酸钙的质量分数达到20%时,堵漏材料已基本失去流淌性。在经达5次热胀冷缩实验后,堵漏材料表面方出现裂纹,印证了其良好的耐高温性能。以上数据表明该新型绝缘密封材料具有潜在的业界推广价值。