∅=45°+ α- β∅=shear angleα= rake angleβ= friction angle
Rake angle is usually used for cutting and machining processes. This can vary according to the materials being cut and set-up. The two types of rake angle are the back and side rake angle.
The clear difference between positive and negative rake angles is that for the positive rake angle,the leading edge of the cutting tool is behind the perpendicular of the material to be cut.While the tool leading edge is ahead or beyond the perpendicular for the negative rake angle.
rake angle
To make a drag rake from a chain link fence you will need the following materials.One 6 foot by 6 foot section of chain link fence.Two six foot lengths of 1/2 inch galvanized angle iron.14 1/2 inch u-bolts with nuts.One 10-12 foot section of 1/2 inch galvanized chain.2 1/2 inch co-links.Drill holes in angle iron to correspond with dimension of the u-bolt width on one foot center across both pieces of angle iron. Bolt the angle iron to the chain link fence section with the u-bolts. Attach the chain to one end of the drag rake by connecting the co-link to the chain link fence as close as possible to the angle iron and approximately one foot from each edge of the rake.. Note: lay the drag rake flat on the ground prior to attaching the co-links to the fencing material. The angle iron should be resting flat on the ground to provide a smooth leading edge of the rake. Finally connect the two co-links to the length of chain to complete the drag rake.
The value of the relief (and rake) angle effects how the tool cuts into a particular material and the type or size of chip produced. For short: relief angle determines how deep and how rough the tool bites.
To rake
The boy was as dirty as a rake
"We'll rake her from stem to stern", said the pirate captain. "Hand me that rake.", said the farmer's foreman. Is that a comb or a rake? I went outside to rake the leaves. A rake is a garden and lawn tool.
The address of the Rake Public Library is: 123 N Main St, Rake, 50465 0166
Rake can be described as an angle at which the headstock of the motorcycle is inclined when compared against a vertical line drawn perpendicular to the ground. Trail is the distance on the ground between a straight line drawn through the center of the front wheel spindle and a line drawn through the center of the headstock axis. Taken from http://bikearama.com/theory/motorcycle-rake-trail-explained/
the rake.