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Classification and characteristics of racks

(Summary description)The rack is also divided into a straight rack and a helical rack, which are paired with a spur gear and a helical gear, respectively; the tooth profile of the rack is a straight line rather than an involute (planar for the tooth surface) , equivalent to the index circle radius is infinite cylindrical gear.

Classification and characteristics of racks

(Summary description)The rack is also divided into a straight rack and a helical rack, which are paired with a spur gear and a helical gear, respectively; the tooth profile of the rack is a straight line rather than an involute (planar for the tooth surface) , equivalent to the index circle radius is infinite cylindrical gear.

Information
The rack is also divided into a straight rack and a helical rack, which are paired with a spur gear and a helical gear, respectively; the tooth profile of the rack is a straight line rather than an involute (planar for the tooth surface) , equivalent to the index circle radius is infinite cylindrical gear.
 
 
 
Main features of the rack
 
(1) Since the tooth profile of the rack is straight, each point on the tooth profile has the same pressure angle and is equal to the inclination angle of the tooth profile. This angle is called the tooth angle and the standard value is 20°.
 
(2) The same pitch and modulus are available on any line parallel to the top line.
 
(3) A line parallel to the top line of the tooth and having a tooth thickness equal to the width of the tooth groove is called a dividing line (middle line), which is a reference line for calculating the size of the rack.
 
 
 
Main parameters of the rack
 
Cogging width, high tooth tip, high root height, tooth height, tooth thickness, root radius, etc.

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Tel:
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