The role of the reducer in modern industry is enormous, 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 was greatly developed and closely integrated with the development of new technological innovations. The general trend of the general reducer is as follows:
1. Building block type planning: The basic parameters are selected as the priority number, the standard standard is regular, the parts are versatile and interchangeable, the series is simply expanded and the pattern is refurbished, which is convenient for arranging batch production and reducing costs;
2, high level, high performance: cylindrical gears are widely used for carburizing and quenching, grinding teeth, bearing capacity more than 4 times forward, small size, light weight, low noise, high power, high reliability;减速机
3, the type is diversified, the transformation planning is more: get rid of the traditional single base equipment method, add the hollow shaft suspension type, the floating support base, the motor and the reducer integrated connection, the multi-directional equipment surface and other different types, expand Use scale.
The main factors that promote the horizontal advancement of the reducer are:
1. The theoretical knowledge is becoming more and more perfect, and it is closer to practice (such as gear strength accounting method, shape modification technology, deformation accounting, optimization planning method, tooth root smooth transition, new layout, etc.); R series reducer
2, the selection of good materials, a wide selection of high-quality alloy steel forgings, material and heat treatment quality control level advance; S series reducer
3. The layout planning is more reasonable;
4. The processing precision advances to ISO5-6 level;
5, bearing quality and life expectancy;
6. The quality of lubricating oil is advancing.
Since the 1960s, China has successively formulated the standards for a number of general-purpose reducers such as JB1130-70 "cylindrical gear reducer". In addition to the cheap use of the main engine factory, it has also formed a number of professional manufacturers of reducers. There are a rare number of companies producing gearboxes nationwide, with an annual output of 250,000 universal reducers, contributing to the development of China's machinery products.
Most of the reducers in the 1960s were made with reference to the Soviet Union's technology in the 1940s and 1950s. Later, although they were launched, they were limited to the planning, technological level and equipment conditions of the time, and their overall level and international level were relatively large. distance.
Since the reform and opening up, China has introduced a number of preemptive processing equipment. After introducing, digesting, and absorbing foreign advanced technology and scientific research, we have gradually grasped the planning and production techniques of various high-speed and low-speed heavy-duty gear equipment. The material and heat treatment quality and gear processing precision have a great progress. The production precision of general-purpose cylindrical gear can be advanced from 8-9 of JB179-60 to 6 of GB10095-88. The production precision of high-speed gear can be stabilized at 4-5. level. Some reducers use hard tooth surface, the volume and quality are significantly reduced, bearing capacity, service life, transmission power has a greater advance, which has a great effect on energy saving and the overall level of the host.
The power of the high-speed gear reduction (increasing) speeder planned by China has reached 42000 kW, and the peripheral speed of the gear is above 150 m/s. Following the development, the domestic manufacturing capacity of the reducer is changing with each passing day. Many of them have replaced the imported equipment, but the service life, noise and temperature rise are still some distance from the import, but the price is cheap, in line with national conditions, so these few Years are the years when the reducer is unfolding, and there are more and more manufacturers of reducers. The violent competition and the pressure of vicious cycle make the current reducer market very chaotic. Many reducers with poor quality of cut corners have flowed into the market, causing many Use the troubles of the customer.