negative rake

negative rake

[′neg·əd·iv ′rāk]
(mechanical engineering)
The orientation of a cutting tool whose cutting edge lags the surface of the tooth face.
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References in periodicals archive ?
The unique tooth geometry and negative rake angle of these discs creates chips instead of grinding dust, which reduces the inhalation hazard from resin-bonded grinding particulates or aluminum dust and contributes to workplace safety.
Melamine should be cut with a negative rake saw and tooth spacing should not been more than 3/8 of an inch.
This is very important in the choice of cutting tool geometry, while a negative rake angle and cutting tool wear magnify hardened layer.
They included solid carbide end mills and a 1", 2-flute, negative rake indexable mill.
Created to machine hardened steels, it has a helix design, a heavy-duty core, and negative rake.
TP2500, available in an array of geometeries, including positive and negative rake angles and as a wiper, is the first grade created with the chemical vapor deposition (CVD) process.
Consequently, the force readings at such feed rates may not reflect the cutting mechanism correctly, and may lead to negative rake friction coefficients as shown in Figure 7.
Some of the choices include negative rake inserts versus positive rake inserts and the combination Pos-Neg geometry inserts; coated versus uncoated, chip breaker styles and the different tool nose radius options.
The American Performance Series of inserts from American National Carbide, features negative rake turning inserts for use on modern CNC machines.
1 mm width and 20 degree negative rake angle to resist chipping.
For example, CoroMill Plura cutters designed for HSM have reinforced cutting edges with neutral or negative rake to mill materials above 54 Rc hardness.
The relief edge features a negative rake that acts as a knife-edge making that edge capable of cutting as well.

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