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A1 select gear material, heat treatment method, tooth surface geometry, find the allowable stress; b1 determine the design criteria; c1 design calculation according to the determined design criteria, determine the basic parameters of the gear; d1 calculate the gear comprehensive corner error, Check the working capacity of the gear transmission; e1 calculates the gear geometry, selects the gear structure; f1 draws the part drawing.
In the gear transmission CAD design flow chart, the module 1 includes: inputting known parameters, determining the gear material and heat treatment mode, determining the hardness value HB, selecting the standard modulus; the module 2 includes: calculating the basic parameters of the gear according to the tooth surface contact fatigue strength design. Calculate the number of teeth and modulus, retrieve the standard value of the modulus, calculate the center distance and the tooth width, and check the contact fatigue strength of the tooth surface; Module 3 includes: calculating the basic parameters of the gear according to the bending fatigue strength of the root, calculating the number of teeth and the modulus, and searching The modulus standard value, the calculation center distance and the tooth width are used to check the tooth root bending fatigue strength; the module 4 includes: geometric size calculation, drawing a part drawing, and printing related documents.
Design Process Simulation To demonstrate the effectiveness of the design system, the system can be commissioned. The specific operation process is as follows: In the first step, the system requires the user to further confirm the design work and give some hint information; the gear drive CAD design flow chart software runs the second step interface software operation third step interface second step, input basic Design parameters and transmission working conditions, and confirm, operation interface; third step, input tooth geometry, gear material and heat treatment method, select load factor and tooth width coefficient, and limit error control range, and confirm, operation interface The fourth step of the software running the fourth step interface software runs the fourth step of the final step interface. The program gives the design plan through calculation. However, the design result obtained by this step is not necessarily feasible. It is necessary to check the strength. If the accuracy of the gear is not satisfactory, The error range can be reduced to allow the design software to update the design and run the interface. The fifth step is to initialize AutoCAD. You can choose whether to draw the big gear or the pinion, click / start drawing 0 button, use AutoCAD to draw the part drawing and run the interface.
Micro-machines with detailed gear-driven system help preset and practice
The output data calculated by the software is: gear modulus m, center distance a, large (small) gear tooth number Z, index circle diameter d, tooth width B, corner integrated error $U, large (small) gear AutoCAD part drawing. Functional Process Description/Precision Gear Transmission CAD Design System 0 software design process is different from the traditional gear transmission design after introducing the idea of ​​iterative refinement. It has precise calculation, fast design speed and many feasible solutions. And so on, the specific steps are as follows, the flow chart is as shown.