Make Gears with Honeysuckle MDA2000

Honeysuckle MDA three-dimensional design software is a three-dimensional modeling software developed and developed by the Chinese people. It is one of 15 major key projects of the national 863 high-tech development program. It uses the ACIS geometric modeler of Spatial Corporation of the United States as a geometric operation set to improve geometric modeling. Stability. ACIS is one of the software that provides advanced 3D geometric operation sets internationally. At present, 170 commercial softwares including Autodesk's MDT use the ACIS geometry operation set, and more than 1 million users are directly used.

In 2000, under the strong support and care of the Tianjin Science and Technology Commission, a total of 200 sets of honeysuckle MDA2000 Enterprise Edition software has been popularized in Tianjin users, involving a total of 123 companies in Tianjin's mechanical and electrical, automotive, motorcycle and other industries. All users have undergone centralized professional training of engineers, and the ease of use of the software has been recognized by users.

Honeysuckle MDA2000 provides a parametric feature design function, a total of six modules: part design, assembly design, engineering drawing design, advanced surface, standard parts library and advanced rendering. Users can use this software to conveniently carry out parts design (three-dimensional solid modeling) and assembly design; automatically generate required engineering drawings; CNC machining centers equipped with computer-aided manufacturing software can directly read the designed three-dimensional solid part files; Solid parts and assemblies can use computer-assisted analysis software to perform various strength analysis, motion analysis, motion simulation, etc.; users can carry out secondary development on the basis of the software to meet the special needs of different industries and fields. Honeysuckle MDA2000 has developed into a standard platform and integrated platform for secondary application development in China, as well as a CAD/CAM integration support platform.

First, the use of honeysuckle MDA2000 production gear

Involute Equation Formula:
r=R/cos(t) (starting point t≠0, R is the radius of the base circle)
θ=sin(t)/cos(t)-t
Z=0
To make a helical gear with modulus m=2, tooth number Z=30, pressure angle α=20° and inclination angle 10°, its parameters are:

1. Index circle d=m*Z=60, tooth tip circle da=m*( Z+2)=64, tooth root circle df=m*( Z-2.5)=55, base circle db=d*cos (α) = 56.38, the base scallop thickness center angle θ = 180/π+2*(tg(α)*180/π-α) = 7.708°;

2. The angle β between the two teeth is equal to 360/Z=12°, and the center angle of the base crease is γ=β-θ=4.292°.

Second, the following is a specific creation process in "Honeysuckle":

1. In the center of the coordinate system, create a φ64 × 10 cylinder 1 on the datum plane DTM2;

2. Select the "Tools -> Sketch Features -> Function Curves" command with plane 3 as the sketch plane. Set in the dialog box and enter the parameter equation: r = 28.19/cos(t), θ = sin(t)/ Cos(t)-t , Z=0; the starting point parameter is 0.0001, and the end point parameter is 0.5 (as shown in the figure). Exit the sketch.

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3. Auxiliary axis: sketched straight line on the datum plane 3, and the positive angle with the reference axis 1 is 4,292°. Exit the sketch.

4. Repeat step 2 to set the dialog box as shown in the figure below: The auxiliary line made by picking step 3 is the x axis.

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5. Draw the sketch circle with the center point at the origin and φ55 on the datum plane 3, connect the missing part, and cut off the extra part of the sketch circle, as shown in the figure;

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6. Select the "Features -> Plane" command, use the reference axis 1 as the center axis, and use the oblique plane of the reference plane 3 ("reverse" 10°) to generate the "reference plane 4"; from the "reference plane 1" "and datum 4" to create "datum axis 4"; select "surface -> stretch surface" command, in the dialog box, set the stretching distance to 12, the cut line to select "section of the curve section", direction Select the reference object "reference axis 4" to generate "stretch surface 1" (as shown)

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"Extrude Surface 1" performs surface envelope "difference" operation to generate "Surface Enclosure 2", ie, to generate a helical tooth slot, and to perform a "round array" of 12° x 30 for "Surface Enclosure 2". Generate "helical gears" as required.

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