The prediction of chatter vibrations between the cutter and workpiece is important as a guidance to the machine tool user for an optimal selection of depth of cut and spindle rotation, resulting in maximum chip removal rate without this undesirable vibration. This can be done by some approaches. In this work, an analytical method is applied in which the time-varying directional dynamic milling ...

A forward and automatic method for in-process model generation is proposed and integrated with three-dimensional computer aided process planning (CAPP) system. The method based on feature cutter volume of manufacturing drives the in-process model to evolve from blank to part, which is coincident with the manufacturing process and ideology of process design. At the same time, technology of What-...

background: current who best infection control practices for injections do not address the use of hub cutters due to insufficient evidence on safety and efficacy. objective: to assess the impact of the use of hub cutters on 1) the frequency of needle-stick injuries (nsis) and other blood exposures among workers and 2) the volume of sharps waste in a mass vaccination campaign setting. methods: d...

Multi-component cutting force sensing systems in manufacturing processes applied to cutting tools are gradually becoming the most significant monitoring indicator. Their signals have been extensively applied to evaluate the machinability of workpiece materials, predict cutter breakage, estimate cutting tool wear, control machine tool chatter, determine stable machining parameters, and improve s...

hairball in a urethral diverticulum has rarely been reported. these hairballs are usually formed in the diverticulum coated with a hair bearing epithelium and can lead to urinary obstruction or infection. using laser is a safe way to ablate such stones.

Gabriel Taubin Brown University Holly Rushmeier, who’s served as associate editor in chief (AEIC) for special issues since 2007, has recently been appointed co-editor in chief of Eurographics’ Computer Graphics Forum, effective May 2010. Owing to her increased responsibilities and numerous other commitments, Holly has decided she’ll be unable to continue serving effectively in her current CG&A ...

5-Axis machining has been widely used in manufacturing of complex ruled geometries in automobile, aerospace, energy, and mould industries. Compared with traditional 3-axis machining, this machining operation offers better shaping capability and productivity with additional degrees of freedom in the tool motion. Tool path planning is a challenging task in most 5-axis machining operations, with t...

A virtual reality machine shop environment was developed for the determination of critical quantitative and qualitative machining process parameters. Material removal and milling machine axes kinematics are simulated in real time. The G-Code program serves as the input to the system. A graphical model for the calculation of quantitative data affecting the machined surface roughness was develope...

The present technology commonly uses manually operated devices to cut the grass, creating pollution and energy loss. In this project, we introduce automatic grass cutter for cutting grass. Automatic can able decrease workload of grasses in field; also this, operating force is given by rechargeable battery that fixed cutter, sensors, crane mechanism find out unwanted things get around while oper...

The paper presents the cutting by generating of spur gears using a rack cutter with modified geometry. In order to find geometry new gears, proper programme has been developed. this gear is compared one same parameters but obtained standard cutter. differences between two are insignificant tool simpler and higher durability.