Gear racks, sprockets and chains are available in small sizes from Nuoguang, and can also be customized for processing.

Shanghai Nuoguang sells various specifications of gears, racks, chains, and sprockets nationwide. Racks are also divided into spur gear racks and helical gear racks, which are paired with spur gears and helical cylindrical gears respectively. The tooth profile of the rack is a straight line rather than an involute line (for the tooth surface, it is a plane). It is equivalent to a cylindrical gear with an infinite radius of the indexing circle. The main parameters of the rack include tooth space width, tooth top height, tooth root height, tooth height, tooth thickness, tooth root circle radius, etc. Gear and rack processing methods, gear hobbing, gear shaping, gear shaving, gear grinding, and gear honing. Module, processing accuracy is level. We can also provide processing services such as rack conditioning, tooth surface quenching, and bluing (blackening) according to customer needs. This product is widely used in many mechanical equipment. Gear size (International Standardization Organization) stipulates that the unit used to express gear size is the module. However, there are actually other ways of expressing the size of gears. Modulus Modulus (.) Modulus (.) Modulus (.) Modulus multiplied by pi gives you the tooth pitch. The pitch is the length between two adjacent teeth. Pi modulus (circumferential pitch) The pitch is the circumferential pitch. That is the tooth pitch. For example, using the periodic pitch, you can make a gear with a pitch of \\\ so that the pitch is an integer. The conversion relationship with the module/(diameter section) in English is. According to the standard, the unit of length is millimeters. However, in countries such as the United States and the United Kingdom, inches have always been used as the unit of length. Used in these countries to indicate gear size.
Compared with belt transmission, rack and pinion transmission mainly has the following advantages
The characteristics of large transmission power and efficient gear transmission. Gear transmission is used to transmit gears and power between any two shafts. Its circumferential speed can reach up to 100%, and the gear diameter can range from less than to above. It is the most widely used mechanical transmission in modern machinery.
, long life, stable operation, high reliability
, can ensure a constant transmission ratio, and can transmit motion between two axes at any angle.
Compared with belt transmission, the main disadvantages of gear transmission are:
The manufacturing and installation accuracy of gear racks are higher, so the cost is higher
The transmission belt is not suitable for long-distance transmission.
Points to note when using and maintaining the sprocket
The tightness of the sprocket should be appropriate. Too tight will increase power consumption, and the bearings will easily wear. Too loose, the sprocket will jump and fall off the chain easily. The tightness of the sprocket is to lift or press down from the middle of the sprocket, and the center distance between the two sprockets is about %%.
The sprocket should be installed on the shaft without swinging or skewing. In the same transmission assembly, the end faces of the two sprockets should be in the same plane. When the center distance of the sprockets is less than . meters, the deviation can be millimeters. When the center distance of the sprockets is above . meters, the deviation can be millimeters. However, there should be no friction on the sides of the sprocket teeth. If the two wheels are offset too much, it will easily cause the chain to break off and accelerate wear. Pay attention to checking and adjusting the offset when replacing the sprocket.
After the sprocket is severely worn, new sprocket and new sprocket should be replaced at the same time to ensure good meshing. You cannot just replace the new sprocket or new sprocket alone. Otherwise it will cause poor meshing and accelerate the wear of the new sprocket or new sprocket. After the sprocket tooth surface is worn to a certain extent, it should be turned over in time (referring to the sprocket used with adjustable surface) to extend the use time.
. The new sprocket is too long or has stretched after use, making it difficult to adjust. You can remove the chain links depending on the situation, but it must be an even number. The chain link should pass through the back of the sprocket, the locking plate should be inserted outside, and the opening of the locking plate should face the opposite direction of rotation.
The sprocket should be filled with lubricating oil in time during work. Lubricating oil must enter the matching gap between the roller and the inner sleeve to improve working conditions and reduce wear.
. The old sprocket cannot be mixed with some new sprockets, otherwise it will easily cause impact in the transmission and break the sprocket.
When the machine is stored for a long time, the sprocket should be removed and cleaned with kerosene or diesel, then coated with engine oil or butter and stored in a dry place.
Main features of the rack
Since the rack tooth profile is a straight line, each point on the tooth profile has the same pressure angle, which is equal to the inclination angle of the tooth profile. This angle is called the tooth profile angle. The standard value is .
, any straight line parallel to the tooth top line has the same tooth pitch and module.
The straight line parallel to the tooth top line and the tooth thickness is equal to the tooth space width is called the index line (center line), which is the baseline for calculating the rack size.
Main parameters of the rack
Tooth space width, tooth top height, tooth root height, tooth height, tooth thickness, tooth root circle radius, etc.
Gear runout, full tooth depth, common law Whether the line and tooth direction are qualified? Whether the tooth runout and pitch error are out of tolerance?
Whether the installation distance after the gear and rack are installed is appropriate
. The meshing clearance of the rack and gear should be the module
/> , whether the full tooth depth of the rack, runout, common normal, especially the tooth direction are qualified.