实验室粮食样品自动分样器的研制

论述了实验室粮食样品自动分样器的工作原理、取样流程、结构组成和设备特点。该设备通过机电一体化设计,模拟人工分样,实现了粮食样品分样的自动化,降低了劳动强度,保障了质检人员的健康安全,开发后将成为各级质检机构必备的粮食样品前处理设备。     

THE NEW SECTION PLANE OF NORMAL CYLIDRICAL WORM TOOTH FLAND ERROR ON THREE COORDINATE MEASURING MACHINE

The concept of "New Section Plane" has been proposed when the tooth flank error of normal cylidrical worm is measured on the three coordinate measuring machine .and it has been compared in many respects with the general" First Section Plane". It has been pointed out that "The New Section Plane" is superior to "The First Section Plane