The role of the reducer in modern industry is huge, and its status is irreplaceable.Let me talk about the start and development trend of the reducer.
In the 1970s and 1980s, the world's reducer technology has made great progress and is closely integrated with the development of new technological innovations.The general trend of general reducers is as follows:
1. Building block planning: the basic parameters are the priority number, the standard is regular, the parts are universally interchangeable, the series is simple to expand, and the pattern is refurbished, which is convenient for mass production and reduces costs;
2. High level and high performance: Cylindrical gears are widely used in carburizing, quenching and gear grinding, and the bearing capacity is increased by more than 4 times, small in size, light in weight, low in noise, high in power and high in reliability;
3. Diversified types, more transformation plans: get rid of the traditional single base equipment, add hollow shaft suspension, floating support base, integrated connection of motor and reducer, multi-directional equipment surface and other different types, expand the scale of use.
The main factors that promote the horizontal advancement of the reducer are:
1. Theoretical knowledge is becoming more and more perfect and closer to practice (such as gear strength calculation method, shape modification technology, deformation calculation, optimal planning method, tooth root smooth transition, new layout, etc.); R series reducer
2. Select good materials, widely select high-quality alloy steel forgings, advanced material and heat treatment quality control level; S series reducer
3. The layout planning is more reasonable;
4. The machining accuracy is improved to ISO5-6 level;
5. Bearing quality and life;
6. The quality of lubricating oil is improved.
Since the 1960s, my country has successively formulated a number of general reducer standards such as JB1130-70 'cylindrical gear reducer'.In addition to cheap use by main engine factories, a group of professional reducer manufacturers have also formed.Owns a rare gearbox manufacturer in the country, with an annual output of 250,000 general-purpose reducers, making contributions to the development of China's mechanical products.
The reducers of the 1960s were mostly manufactured with reference to Soviet technology of the 1940s and 50s.Although it was launched later, it was limited to the planning, technical level and equipment conditions at that time, and the overall level and international level were relatively high.distance.
Since the reform and opening up, my country has successively introduced a number of advanced processing equipment.After introducing, digesting and absorbing foreign advanced technology and scientific research achievements, we have gradually mastered the planning and production technology of various high-speed and low-speed heavy gear equipment.The quality of materials and heat treatment, as well as the precision of gear machining, have been greatly improved.The production accuracy of general-purpose cylindrical gears can be improved from 8-9 grades of JB179-60 to 6 grades of GB10095-88.The production accuracy of high-speed gears can be stabilized at 4-5 grades.grade.Some reducers use hard tooth surfaces, the volume and quality are significantly reduced, and the carrying capacity, service life, and transmission power have been greatly improved, which has a great effect on energy saving and the overall level of the host.
The power of the high-speed gear reduction (speed-up) governor planned in my country has reached 42,000 kilowatts, and the peripheral speed of the gear is above 150 m/s.With the development, the domestic reducer manufacturing capacity is changing with each passing day.Many of them have replaced imported equipment, but there is still a distance between the service life, noise, and temperature rise compared with imported equipment, but the price is cheap and in line with national conditions. many.Intense competition and the pressure of a vicious circle have made the current reducer market very chaotic.Many low-quality reducers that cut corners and materials have flowed into the market, causing many customers troubles in use.
