This article describes optimization mathematical model of metal rubber buffer on artillery. In this paper, motion equation of new metal rubber buffer on artillery, stiffness model of the ring spring, constitutive relation of metal rubber, and mathematical model of friction block are constructed. According to the technical requirements of buffer, optimization variables, constraints, and object function are identified. Then optimization mathematical model is established.
Pulse electrochemical mechanical polishing (PECMP) technology is a compound polishing technology by combining the mechanical action of a traditional grinding process and the electrochemical reaction of a pulse electrochemical machining (PECM) like process. Its advantages are low surface roughness, high efficiency, simple equipment, low material removal and more applications. Because a number of processing input variables (voltage activation program, electrolyte composition, etc.) will influence the surface quality of workpiece and productivity, controlling the surface reactions in PECMP requires a carefully designed combination of various processing parameters. In the present work, several typical experiments are investigated to compare the properties of PECMP with that of electrochemical mechanical polishing (ECMP). The experimental results can contribute to optimisation of the processing parameters of PECMP. Analytic methodology for the workpiece surface quality after PECMP is helpful to conduct the processing parameters as well. By comparison, PECMP is proved to be more efficient and have better surface quality than ECMP.
The machining characteristics of SiC/Al composite using wire electro discharge machining (WEDM) were investigated in this study. Material cutting speed and surface roughness value were adopted to evaluate the machinability. Peak current, pulse on time, pulse duration and working voltage were selected as the input variables to investigate the machining performance. Effects of input variables on the cutting speed and surface roughness were experimentally tested. Peak current, pulse on time and working voltage were confirmed to have positive effects on cutting speed and surface roughness value. Whereas the cutting speed and surface roughness value decrease with the increase of pulse duration.
The purpose of this experimental research are investigation the growth behaviors of the
oxide layer at different pre-dressing conditions in ELID pre-dressing, effects of voltage and duty
ratio of the power supply, wheel speed on the oxide layer formation characteristics on the metal
bond diamond wheel surface. The results indicated that the oxide layer thickness on the wheel
surface increase with pre-dressing time. The oxide layer growth rate is faster in beginning period
time of pre-dressing process then slow down. Both the thickness and growth rate of oxide layer
increase with the increase of duty ratio and applied voltage. It takes longer time for oxide layer
growth rate to reach to stable state in lower duty ratio condition than in higher duty ratio condition.
There are no effects of wheel speed on oxide layer growth behaviors in the wheel speed range of
1000rpm to 4000 rpm.
To prepare for the Kneading Mixer paddles structure optimization,five independent parameters were selected to establish paddles, material pot diameter D, minimum clearance e, hollow paddle helix angle α2, and the angular velocity of two paddle ω1,ω2.Then establish geometric relationships and the constraints. And using pro / E software parameters-driven to achieve the parametric design of the complexity paddles.
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