I also used a design table to quickly create all the configurations I needed but I will save that story for another blog.
#Solidworks toolbox gear manual#
The only manual part in that model is saving the sketch as a sketch block.
![solidworks toolbox gear solidworks toolbox gear](https://michaellorddotme.files.wordpress.com/2016/05/part.png)
I used a layout model which contains equations and relations to build me any gear with the input being the number of teeth, module and pressure angle.
#Solidworks toolbox gear series#
When we solve this equation, we obtain the same values that we measured using SOLIDWORKS.įor this custom gear train, I have made a series of sketch blocks for different module one gears. The 20mm gear has a cone angle of 26.57 degrees and the 40mm gear 63.43 degrees.Įquation One: Cone Angle Calculated Using the Gear RatioĮquation 1 calculates the cone angle (δ) for bevel gears based on the number of teeth (z) on the two meshing gears. The figure below shows the sketch used to determine the cone angles of the bevel gears. This third line represents the meshing interface between the two gears and the smart dimension tool can be used to determine the cone angles of both the bevel gears. A third line was then created from that intersection point to the location where to two pitch circles connected. Each circle had a line starting at the center point and extended until it intersected the other line. To obtain the cone angles, a sketch was created on the front plane with 3 lines creating a right-angled triangle. The sketch with the 20mm circle had a vertical relation to the center of the bigger circle and the edges of the circles are tangent.
![solidworks toolbox gear solidworks toolbox gear](https://d2t1xqejof9utc.cloudfront.net/pictures/files/146470/original.jpg)
The 40mm circle was sketched on the top plane and the 20mm gear was sketched on a plane parallel to the right plane and tangent to the edge of the 40mm circle.
![solidworks toolbox gear solidworks toolbox gear](https://slideplayer.com/slide/16510296/96/images/3/Point+P+The+velocity+of+point+P+in+the+small+gear+must+equal+the+velocity+of+point+P+in+the+large+gear..jpg)
To start, I made two orthogonal sketches with the pitch diameter of each gear (20mm and 40mm). The first step was to get the gear ratio I wanted and for this example, it is 20/40 or 1/2. I wanted to use SOLIDWORKS and do as simple of calculations as possible. There are equations to calculate specifications of the bevel like the cone angles of the gears, tooth, face width and cone distances. Recently, I ran into a scenario where I had to design some custom-sized gears and found a creative way to make a beveled gear that I thought I should share.