In the 1970s and 1980s, the world's reducer technology […]
①High degree, high performance. Cylindrical gears generally use carburizing, quenching and tooth grinding, and the load capacity can be increased by more than 4 times. The volume is small, the weight is light, the noise is low, the efficiency is high, and the reliability is high. To
②Building block combination design. The basic parameters adopt the priority number, the size specifications are uniform, the parts are universal and interchangeable, the series is easy to expand and the trick is innovated, which is conducive to the organization of mass consumption and the reduction of (reduce) costs.
③Diversified types and many variant designs. Get rid of the traditional single base device method, add hollow shaft suspension type, floating support base, integrated connection of motor and reducer, multi-directional device surface and other different types to expand the scope of application.
①The theoretical knowledge is getting better and closer to practice (such as gear strength calculation method, modification technology, deformation calculation, optimization design method, tooth root transition, new structure, etc.).
② Good data are used, and various high-quality alloy steel forgings are commonly used, and the degree of data and heat treatment quality control has improved. In the reducer family, planetary reducers are widely used in servo, stepping, DC and other transmission systems because of their small size, high transmission efficiency, wide reduction range, high precision and many other advantages.
③The structure design is more reasonable. The correct installation, use and maintenance of the planetary gear reducer is an important part of ensuring the normal operation of mechanical equipment. Therefore, when you install the planetary reducer, please strictly follow the following installation and use related matters, and carefully assemble and use it.
④The machining accuracy is improved to ISO5-6 level.
⑤Bearing quality and lifetime have improved.
⑥The quality of smooth oil is improved.
Since the 1960s, my country has successively formulated standards for a number of general-purpose reducers such as JB1130-70 "Cylindrical Gear Reducer". In addition to the use of the original equipment by the OEM, it has also constituted a group of professional reducer manufacturers. At present, there are hundreds of reducer enterprises nationwide, with an annual output of about 250,000 general-purpose reducers, which have contributed to the development of my country's mechanical products. Most of the reducers in the 1960s were made with reference to the technology of the Soviet Union in the 1940s and 1950s. Although they were developed later, they were limited to the design, craftsmanship and equipment conditions at that time, and their overall level was far from the international level. .
Since the reform and opening up, my country has introduced a number of advanced processing equipment. After introducing, digesting and absorbing foreign advanced technology and scientific research, it has gradually controlled the design and manufacturing technology of various high-speed and low-speed heavy-duty gear installations. Data and heat treatment quality and gear processing accuracy (precision) have been greatly improved. The manufacturing accuracy of general cylindrical gears can be improved from JB179-60 grade 8-9 to GB10095-88 grade 6. The manufacturing accuracy of high-speed gears can be improved. Stable at level 4-5. After the part reducer adopts hard tooth surface, the volume and mass are obviously reduced, and the bearing capacity, service life, transmission efficiency (efficiency) have been greatly improved, which is helpful for energy saving and improving the overall degree of the main engine. Great effect. The power of the high-speed gear reducer (increaser) designed and manufactured by our country has reached 42,000kW, and the gear peripheral speed has reached 150m/s or more. However, the technical level of most of our country's reducers is not high, and old products cannot be replaced immediately. The coexistence of new and old products will take a long time.