How to make a good quality speed reducer

1.Precision of the gear control gear The basic regulation of gear accuracy: through practical activity certification, gear accuracy must be manipulated in GB10995-887~8 level, angular speed is higher than 50 m/s gear, gear distance limit error, gear axial vibration size tolerance, gear size tolerance must be stable to achieve level 7 accuracy. Under the condition of achieving 7 precision gear, the tooth should be reversed, and the convex mold should be resolutely eliminated.   2. Manieuvate the quality of raw materials High quality raw materials are a necessary condition for the manufacture of high quality goods. No matter which way, the raw materials need to go through rigorous composition detection, grain size measurement and innocence identification after arriving at the factory. The purpose is to immediately adjust the heat treatment deformation, improve the quality of tooth production and processing.   3. Avoid heat treatment deformation After initial processing, the billet is cultivated into steel casting, quenching or heat treatment to achieve:(1) Soft cast iron parts are easy for drilling production and processing;(2) Reduce the internal stress;(3) Optimize the crystal and improve the mechanism to improve the physical properties of the steel; (4) Prepare in advance for the organization. It should be noted that, in quenching or heat treatment, we must maintain the temperature in the furnace symmetry, and the use of fixture, so that the product workpiece evenly heating and refrigeration, prohibit accumulation together. For the gears that need to be punched to relieve the net weight, the punching sequence shall be distributed after heat treatment. The heat treatment of the gear gear has high compressive strength, strength, wear resistance and fatigue strength, while the core still maintains good plastic deformation and ductility. To reduce the deformation. Cervical induction quenching should use lower heat treatment temperature and shorter cooling time, uniform heating and slow cooling.   5. Ensure the accuracy of the tooth billet The accuracy of the gear hole specification is specified in the positive and middle difference of the error value of the hole, set at ± 0.003~ ± 0.005 mm; if the deviation is within the design scheme of the hole, it must be classified and transferred to the front tooth process. The inner orifice vibration and axial vibration of the tooth blank are level 6, which is set in the 0.01~0.02mm category.   6. Production and processing countermeasures of front teeth The purchased gear CNC blade must be tested, must do AA level regulations. After grinding the CNC blade, check the axial aspect of the front blade, the adjacent segment difference, the accumulation error value of the expansion groove, the front of the expansion drill and the center line of the inner thread. Under the premise of not endangering the compressive strength of gear, improve the high index of 0.05~0.1 meters, improve the high index of CNC blade teeth, and prevent the intervention of gear transmission wheel teeth.M=1~2 gears use the round end milling cutter, and the round amount is R=0.1~0.15m. Reduce the mesh corner edge and improve the tooth top intervention during gear transmission. The front tooth machinery and equipment should be carried out once a year, and the maintenance must be carried out. Operators should also often carry out self-inspection, ineffective measures in the lathe spindle axial gap control below 0.01mm, knife shaft diameter jump below 0.005 mm, spiral bevel gear shaking below 0.008 mm.Installation accuracy of CNC blade: the axial fibrillation operation of CNC blade is operated below 0.003 mm, and the internal hole vibration is operated below 0.004mm. Accuracy of front tooth overalls, journal diameter and gap of product workpiece hole, ensure within 0.001~0.004mm. The external thread on the journal must be cut by the external thread bed under the precise positioning of the C-top class: flatness 0.003 mm, diameter jump 0.005 mm. The nut must ensure that the thread and the reference point are once loaded, and the plane of the sealing ring is 0.003 mm.   7. Civilized behavior of production and manufacturing Gear transmission noise has over 30% of the cause comes from the rough edges, bumps and bumps. Some processing plants in the gear box installation, remove the edge and bump, is a passive practice.(1) Gear shaft parts, the rear teeth immediately cover the special plastic protective shell to the lower channel process, and with a special plastic protective shell into the warehouse and delivery.(2) Carry out the honing tooth processing process, reduce the journal surface roughness, remove the wool edges, and avoid bumps and bumps, can reasonably reduce the noise of gear transmission.   8. Use other raw materials and heat treatment and metal surface treatment methods (1) Can use powder not metallurgical forming technology, gear forming after the tooth induction quenching.(2) The use of ink-cast iron, gear drilling production and processing, and then carry out soft nitrogen infiltration treatment.(3) The use of adjustable steel raw materials, gear drilling work, using soft nitrogen infiltration treatment or tooth plating copper to solve. Comprehensive above, to eliminate the gear transmission noise, gear raw materials and heat treatment is to this, tooth blank accuracy is to ensure, gear accuracy is important, civilized behavior production and manufacturing is the basic.

12-29-2023

Structure of the cylindrical gear reducer

Cylindrical gear reducer belongs to a type of gear reducer. According to the basic principle of gear reducer, the mechanical equipment transmission system is used to reduce the speed ratio and improve the torque distance. It uses the gear rate converter to speed down the rotation of the motor to the required number of rotation, and obtain a large range of equipment. Cylinder gear reducer is a kind of relative fine mechanical equipment, and it is used to reduce the speed ratio and improve the rotation distance. Often used in mining, seaport, aviation, engineering construction, hoisting, industrial equipment, cars and other industries.   Construction of the cylindrical gear reducer: The key of cylindrical gear reducer is composed of parallel face shaft gear, cylindrical gear, sealing ring, rotating shaft and shell; according to the structural characteristics, primary cylindrical gear reducer, three-level cylindrical gear reducer and multiple gear reducer, each level is composed of several size gears; the large drive ratio of primary cylindrical gear reducer is generally 8 —— 10, the key to this limitation is excessive external contour specification. If i> 10 hours (i indicates the transmission ratio), the secondary cylindrical gear reducer should be selected. The secondary cylindrical gear reducer is used in i: 8-50 and high and low speed levels of 250-400mm.Three-stage cylindrical gear reducer is used to specify the application requirements of large transmission ratio. We can see that the more the ratio of the cylindrical gear reducer, the greater the transmission ratio, the lower the output speed ratio, the greater the torque, the greater the noise; the smaller the opposite.   Performance characteristics of the cylindrical gear reducer: Small size, light weight, high precision, high bearing capacity, high efficiency, long life, high stability, stable transmission system, low noise; generally choose oil pool moistening, of course, cooling, when the thermal power can not be considered, can choose the circulation system oil moistening or cooling fan. Cooling fan coil cooling. The office environment can be-40-50℃, and if it is less than 0℃, everything can work normally in a unique natural environment. Cylindrical gear reducer can design and customize the output power and performance of gear reducer according to specific application requirements.

12-29-2023

How to select the speed reducer

Everyone according to the size of the gear reducer gear surface hardness, the gear reducer into hard tooth face reducer and soft tooth surface reducer, on the appearance design, structure is basically no difference, the key in the gear, vortex rod calcination raw materials has a certain difference, lead to two kinds of commodity load, service life and application category. Generally speaking, the gear of high power gear reducer is made of raw materials with high hardness, such as 45 steel, the selection of nitriding heat treatment process to make the hardness above 350 HBS, the gear reducer above this hardness is called hard tooth face gear reducer.The hard tooth gear reducer is not only the high hardness of the gear, but also the hardness of the output shaft and input shaft is much higher than the general gear reducer. Due to the large output power, the raw material of the shell is also made of pig iron calcination, which can very well adapt to the vibration and impact force caused by high load. Service life is longer, suitable for high-load equipment applications. Due to the improvement of raw materials and industrial production, the price of the hard tooth surface reducer is relatively higher. Soft tooth surface product series is the general, gear has not experienced hardness production processing or precision did not achieve the hard tooth surface provisions of the commodity.The main use of soft tooth surface reducer is very common, a variety of automatic packaging machine, conveyor and other small output power equipment application is very common. Its processing technology is simple, the relatively cheap price is also in line with the customer regulations, is the current market application of more commodities. In the purchase of gear reducer, the first to know their selected goods can meet the requirements, such as soft tooth surface reducer can not have to consume money to buy hard tooth surface reducer, its role is all the same, only a high power high load application, the general transmission system soft tooth surface goods is enough to solve.

12-29-2023