Because the tooth profile of the gear rack is straight, the pressure angle at all points on the tooth profile is the same, equal to the inclination angle of the tooth profile. This angle is called the tooth profile angle, and the standard value is 20°.
The straight line parallel to the addendum line and the tooth thickness equal to the slot width is called the dividing line (center line), which is the reference line for calculating the size of the gear rack .
1. gear rack s are mainly divided into straight gear rack s and helical gear rack s, which are used in conjunction with straight/helical gears.
2. There are three types of gears: parallel axis gears, intersecting axis gears and crossed axis gears.
3. Among them, the parallel shaft gear is characterized by two parallel shafts and cylindrical gear transmission, which can be divided into spur gears, helical gears, internal and external meshing gears, gear rack s and herringbone gears, etc.
4. The characteristic of the space axis gear is that the two axes are not parallel, which can be divided into intersecting axes and staggered axes. Intersecting shafts can be divided into various types of bevel gears such as straight teeth, helical teeth, curved teeth (curved teeth), and zero-degree teeth; crossed shafts can be divided into crossed shaft helical gear transmissions, worm transmissions, etc.
Application industries of gear rack and gear
Applied to gantry machining centers, CNC horizontal lathes, boring and milling machines and other CNC machine tool industries:
Using precision ground gear rack s, carburizing and quenching ground gears, the positioning error is less than 0.02mm.
The seventh axis of the robot:
The 7-level precision gear rack is selected, and the secondary molding process is used, and the positioning error is less than 0.05mm.
Automobile welding production line:
Grinding-grade precision gear rack s are selected, and the tooth profile is ground, and the positioning error is less than 0.05mm.
Automated truss assembly line:
The medium-precision gear rack is selected, tempered and quenched, and the positioning error is less than 0.1mm.
Laser cutting machine field:
Grinding grade precision gear rack s are selected, all surfaces are ground and processed, carburized and quenched precision gears, and the positioning error is less than 0.025mm.
Large stroke conveyor line:
Adopt ordinary precision gear rack and gear , tempering and quenching process, the positioning error is less than 0.1mm, and the thrust can reach more than 20T.
Post time: Mar-20-2023
