The angular error of indexing table on machine tool is measured using new developed measuring device. The measuring techniques, which have been reviewed in this paper, are currently available in manufacturing engineering to calibrate the angle measurement. The new developed measuring device using 6 points kinematic concept and employing ball and vee grooves is used to calibrate angle errors of ...

The uneven sowing of wheat on ground covered with rice straw in the rice–wheat rotation area middle and lower reaches Yangtze River has become a serious problem. Therefore, test bed for throwing soil after wide seed belt was designed, which could complete functions crushing, lateral concentration uniform at one time. discrete element simulation model established rotary blade shaft speed, guide ...

introduction: the purpose of this in-vitro study was to compare shaping ability of niti rotary mtwo and flexmaster with stainless steel hand k-flexofile in curved root canals of extracted teeth. materials and methods: mesiobuccal canals of 45 mandibular molar teeth were balanced into three groups of 15 each, with respect to the schneider angle, canal access angle, height, dis-tance and radius o...

A novel form of rotary kiln has been developed which confers advantages over conventional designs. Details are given of the main features of the kiln, along with an approach used to study its heat transfer characteristics when hot processing waste products into a lightweight synthetic aggregate for recycling in building materials. Computer aided ®nite element modelling was used to predict tempe...

The purpose of this investigation was to design a novel magnetic drive and bearing system for a new centrifugal rotary blood pump (CRBP). The drive system consists of two components: (i) permanent magnets within the impeller of the CRBP; and (ii) the driving electromagnets. Orientation of the magnets varies from axial through to 60 degrees included out-lean (conical configuration). Permanent ma...

Results of tests into the energy-efficiency belt conveyor transportation systems indicate that energy consumption their drive mechanisms can be limited by lowering main resistances in conveyor. The component these is represented indentation rolling resistance. Limiting its value will allow a reduction amount consumed mechanisms. This article presents test rig which enables uncomplicated evaluat...

Belt-positioning booster seats are recommended for children who use vehicle seat belts as primary restraints but who are too small to obtain good belt fit. Previous research has shown that belt-positioning boosters reduce injury risk, but the belt fit produced by the wide range of boosters in the US market has not previously been assessed. The present study describes the development of a method...