The static rigidity of a rotating spindle in the radial direction is investigated in this research. A magnetic loading device (magnet loader) has been developed for the measurement. The magnet loader, which has coils and iron cores, generates the electromagnetic force and attracts a dummy tool attached to the spindle. However, the eddy current is generated in the dummy tool with the spindle rot...

Developing a motor-built-in high speed spindle is an important key technology for domestic precision manufacturing industry. The dynamic analysis of the rotating shaft is the major issue in the analysis for a motor-built-in high speed spindle. One of the major concerns is how the motor rotor is mounted on the shaft, by interference (shrink) fit or else. In this study, dynamical analyses are car...

The processing accuracy and productivity of metal-cutting machines are largely determined by the initial characteristics spindle assembly, since it is last link in kinematic chain main drive. Therefore, high demands placed on assemblies to ensure rotational accuracy, speed, parametric reliability, etc. Since movement shaping carried out bearings, they make a decisive contribution units. install...

Abstract In the field of modern agricultural production, increasing productivity and quality machine harvesting, including completeness cotton clogging, seed damage, reducing power consumption are important. this regard, article provides performance calculation comparative analysis serial vertical-spindle harvesters with epi- hypo-cyclic spindle units. A mathematical model was developed, on bas...

The high-speed motorized spindle has been wildly used in the field of aerospace processing, due to its advantages such as high speed, precision, and efficiency. CNC machine tools for processing products require machining accuracy, once fails, it will seriously affect quality product processing. Thus, is important study faults spindle, especially caused by subtle errors. In this work, a dynamic ...

Aquantitative relationship is demonstrated between the coefficient of static friction and the milling process parameters. Different levels of surface roughness are obtained by varying the spindle speed, depth of cut and feed which is followed by measurement of surface roughness using stylus profile meter. The corresponding coefficients of static friction are measured for all specimens using inc...

The objective in this work is to generate and discuss the stability results of fully-immersed end-milling process with parameters; tool mass m 0.0431kg, tool natural frequency 5700 rads , damping factor ξ 0 . 0 2 and workpiece cutting coefficient C 3.5 10 Nm ⁄ . Different no of teeth is considered for the end-milling. Both 1-DOF and 2-DOF chatter models of the system are generated on the basis ...

Surface finish is one of the prime requirements of customers for machined parts. The present paper presents an experimental study to investigate the effects of cutting parameters like spindle speed, feed and depth of cut on surface finish and material removal rate on EN-8. Taguchi methodology has been applied to optimize cutting parameters. The results showed that the spindle speed (the most si...

In this paper, the CNC machine spindle after remanufacturing is researched as an object on uncertain constraints. At first, the equations of the machine spindle motion based on beam theory are established. This article uses Finite Element Analysis (FEA) function to analyze the remanufacturing of machine spindle system in the free mode and while static and the actual working conditions of multi-...