_ Abrasive machining pinion rack rack process can be divided into straight teeth helical rack and rack, respectively, with the spur gear and paired helical gears; rack tooth profile is a straight line rather than involute ( for the purposes of the tooth surface was flat), the equivalent of the pitch circle radius is infinite cylindrical gear. Main features: (1) Since the rack tooth profile is a straight line, so that each point on the tooth profile with the same pressure angle, and equal to the inclination angle of the tooth profile, this angle is called pressure angle, standard value is 20 °. (2) either with an addendum line parallel with the same pitch on a straight line and modulus. (3) parallel to the top line and the tooth thickness of the tooth space width of the straight line is called equal dividing line (neutral), it is calculated the size of the rack baseline. Mainly used for medical equipment, precision parts, according to its own strong balance adjustment work can effectively adjust the distance, pan stable company for the length of the rack I have many years of work experience, never to allow customer satisfaction, so that customers Our products are satisfied manufacturers, can be customized, models, cheap, large more favorable. Sincerely look forward to working with you! Shenzhen OECD Gear Machinery Co. | _ Grinding rack pinion machining process