The optimized design of the hard-toothed gear load capacity is lower for the hard-toothed gear and the higher the contact strength.
The traditional calculation method is: firstly designing with bending strength, checking with contact strength, and bending strength design can only calculate one parameter m, which is artificially preset. The traditional design tooth surface has a too high contact strength reserve and a weak bending strength.
The purpose of the optimization is to select the parameters, and the single-stage gas generator makes the gear bending stress and the contact stress low, and the strength reserve is close. And the optimized parameters are matched reasonably, which avoids the unreasonable factors caused by artificial pre-setting.
The optimal design of the hardness of the involute gear of the hard tooth surface, the Shanghai sewage pump is obviously a multi-objective function optimization problem, which is much more complicated than the optimization problem of the single objective function. It cannot be expected that their minimum values ​​overlap. It is necessary to coordinate between the optimal solutions of each objective function and make appropriate adjustments to each other in order to obtain the overall optimal solution. At present, there are many optimization methods for multi-objective functions, but many methods are not ideal and need Further improvement.
For the problem of gear strength, bending strength and contact strength have been extensively and intensively studied, and there is a large amount of experimental data. Therefore, the weighted combination method is used to unify the objective function, and the optimization problem of the multi-objective function is transformed into the optimization problem of the single objective function, so that the optimization method of the more mature single objective function can be used to solve the global optimal solution.
The die casting process involves the use of a furnace, metal, die casting machine, and die.
The metal, typically a non-ferrous alloy such as aluminum, is melted in the furnace and then injected into the dies in the die casting machine. After the molten metal is injected into the dies, it rapidly cools and solidifies into the final part, called the casting.
The castings that are created in this process can vary greatly in size and weight, ranging from a couple ounces to 100 pounds. One common application of die cast parts are housings - thin-walled enclosures, often requiring many ribs and bosses on the interior.
Metal housings for a variety of appliances and equipment are often die cast.
Several automobile components are also manufactured using die casting, including pistons, cylinder heads, and engine blocks. Other common die cast parts include propellers, gears, bushings, pumps, and valves.
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