tools, materials & knowledge for model makers
I’m looking at making helical gears, as per normal I wanted to start with the fundamentals. What is the optimum angle? Can I index them on the milling machine? Can I machine with a normal cutter? Why do I need to make helical gears? The big benefit is they will be quieter. Gear noise on … Read more
A review of the Warco HV4 4″/110mm Rotary Table. One of the main points to consider when selecting a rotary table is to go as big as you can within the limits of the milling machine that you want to use the table with. I have a small 3″ table that I have used with … Read more
Gear whine – Generated by meshing gears due to the vibration caused by failure of the rolling action between the mating teeth due to: Minute imperfections in manufacture of Tooth pitch circle (radius and centre) – see Gear Design Tooth involute form – gear profile error results in the generation of gear noise at sub-harmonics … Read more
Fundamentally there are a few different gear designs: Bevel Gear – Conical shaped gears, the angle between the input and output shaft is anything except 0 or 180°. Double Helical Gear – The double helical gear gives a much smoother still operation than the spur or helical gear and reduces the noise levels further. However, … Read more
Have just been cutting some gears (gears design) and thought it worth taking some photographs and writing up some comments on how to convert the Hobbymat MD65 so that you can cut straight spur gears. The topslide is removed with four caphead bolts. It is rather awkward that there is a pivot post protruding from … Read more