Involute gear Archive

Geometry of involute gears

This article provides answers to the following questions, among others:

This article provides answers to the following questions, among others:

What is the line of action of two meshing gears?
How is the position of the line of action determined?
What is the line of contact and how is it determined?
What is the pressure angle?
What determines the standard pressure angle?
What ist the base pitch?
What statement does the contact ratio provide?
How does the base pitch and the contact ratio change when the centre distance is increased?
How is the pitch point defined?
How do the operating pitch circles change when the centre distance is changed?
What is the fundamental law of gearing?

This article provides answers to the following questions, among others:

How is the line of action and the line of contact determined for racks?
How does the position of the pitch point change when the distance increases?
Why does the transmission ratio always remain constant even if the distance changes?
How can the standard reference pitch circle of a gear be defined using a rack?

This article provides answers to the following questions, among others:

How are gears manufactured?
What are the advantages and disadvantages of gear hobbing?
What are the advantages of gear shaping with a pinion-shaped cutter compared to planing with a rack type cutter?
What is the basic principle of hobbing, shaping and planning?
What are the advantages and disadvantages of form cutting compared to hobbing, shaping and planning?
How is broaching used for gear manufacturing?

This article provides answers to the following questions, among others:

What is an undercut?
How does undercutting occur during gear hobbing?
What effects does an undercut have on the load capacity of a gear and on the line of action?
Why does an undercut have to be present in gears with a small number of teeth for functional reasons?
How can the minimum number of teeth be determined so that no undercut occurs?

This article provides answers to the following questions, among others:

What is a profile shift?
What is a profile shift used for?
Why can the flank load-bearing capacity be increased by a profile shift?
Why does neither the reference pitch circle diameter nor the base circle diameter change with a profile shift?
What is the profile shift coefficient?
Why is it necessary to shorten the tip circle with a profile shift when the number of teeth is small?
How is the profile shift coefficient required to avoid an undercut calculated?
What are the advantages of profile-shifted gears?

This article provides answers to the following questions, among others: