High-speed motors have broad application prospects in the following areas:

High-speed motors have broad application prospects in the following areas:
(1) high-speed motor to be applied in a variety of occasions, air conditioner or refrigerator centrifugal compressor, etc., and with the development of science and technology, more and more specific requirements, its application will be more extensive.
(2) With the development of automotive hybrid cars, small size, light weight, high-speed generator will get full attention, and has a good prospect in the field of hybrid vehicles, aviation, shipbuilding and so on.
(3) high-speed gas turbine generator driven by a small volume, with high mobility, can be used in a number of important facilities, standby power, but also as an independent Bearing manufacturing machine supply or small power stations to make up for lack of centralized power, and has important practical value .

Common spindle bearings have grease lubrication

Common spindle bearings have grease lubrication, oil mist lubrication, oil lubrication, lubrication and ring jet lubrication and so on.
Grease lubrication without any equipment, lubrication method commonly used in low-speed spindle. dn value of the spindle at 1.0 × 106 or more, use more oil lubrication methods.
Oil mist lubrication is a lubricating oil (such as turbine oil) after pressure air atomizing for railway bearing lubrication. This way to achieve easy, simple equipment, oil mist lubrication function of both, but also play a role in cooling the bearing, but mist difficult recovery, serious environmental pollution, it is gradually being replaced by new oil and gas lubrication.
Oil lubrication is not a small amount of lubricant is atomized by compressed air directly timing, quantitative uniform bearing lubrication area was brought to a dedicated oil and gas pipelines along the wall. Lubricating oil lubrication role, and compressed air to propel the movement and cooling lubricants bearing role. Oil is always in the disengaged state, which facilitates oil recovery, while the environment is not polluted. The implementation of oil lubrication, generally requires that each has a separate oil and gas bearing nozzles to spray at the position of the Deep groove ball bearing, there are strict requirements, otherwise difficult to ensure lubrication, oil lubrication effect is also affected air traffic and oil and gas pressure. Generally speaking, the air flow can be increased to improve the cooling effect, and improve oil and gas pressure, not only can improve the cooling effect, but also contribute to the lubricating oil to reach the lubrication zone, and therefore, to improve the oil and gas pressure helps to improve the speed of the bearing.

Common spindle speed dn value

Common spindle speed dn value (dn value is the average diameter of the spindle radial clearance (mm) and the limit speed (r / min) the product of the spindle) to measure the speed spindle often refers to the value of the spindle dn 1.0 × 106 or more. With the development of bearing technology, lubrication technology, the spindle speed to improve year by year. The data show that in the 1980s, spindle bearing grease lubrication dn values ​​under conditions of maximum reach 0.5 × 106, but after the oil lubrication device developed, dn values ​​rapidly increased to 1.0 × 106, using angular contact ceramic ball bearings after, dn value of the spindle bearings further increased to 2.0 × 106.

High-speed machining technology more and more people's attention

High-speed fatigue testing machine technology more and more people's attention, it is not only for greater productivity, but also get high processing quality, and reduce production costs, and thus is considered to be the 21st century's most promising advanced manufacturing technology one.
In the advanced industrial countries, this technology has been widely used in aviation, aerospace and die industries. In the past five years, the technology of our country has made considerable progress. Is a prerequisite for high-speed cutting,
High-speed machine tools and virtual axis machine tools are groundbreaking major change. Whether ordinary or virtual axis CNC machine tools, a key component to achieve high-speed spindle unit remains.

Everything is not perfect

Everything is not perfect, roughness measuring instrument also has some disadvantages. For example, the equipment is more complex, requires a relatively high cost of inputs, the sensor components (induction loop) poor interchangeability and adaptability, not in some complex shape of the workpiece applications.
Although there are some shortcomings, but it's comprehensive index is good, obvious advantages outweighed the disadvantages. Therefore, induction heating is a major process of metal machining. Is to replace coal heating, ideal for heating the oil heating, gas heating and electric heating, electric oven heating, etc.

Induction heaters

Induction heaters, induction heating precision bearing supply selection generally requires the following parameters:
First: the shape of the workpiece is heated, the external dimensions, the weight of the workpiece is heated.
Second: the workpiece material is heated (usually induction heating, only positive for non-metallic conductors like metal conductors such as graphite).
Third: the heating of the workpiece is the desired target temperature, time, and the target temperature.
Once the above three points clear, you can make the selection of induction heating equipment including matching power.

Also known as induction heating power induction heater

Also known as induction heating power induction heater, also known as induction heating equipment, all collectively work piece is heated both involve induction heating include: induction heating power supplies, induction heating equipment, bearing heater, mechanical spindle induction heater, including industrial after preheating induction heating power supply piping hot, Evaporation, copper brazing used, the basic working principle is to use alternating current generates an alternating magnetic field, the alternating magnetic field which is generated inside the metal conductor eddy (eddy current), heat rapidly so that the metal of the workpiece, in general, the heating effect, there is a frequency, a current, a magnetic field joint decision.
In induction heating, the temperature rise of the workpiece to be heated is a metal part, there will be induced heat the heater itself, most of the work to be induced through the use of cooling water to cool the heated portion of the workpiece is not a non-metallic heat .
All metal parts can be used induction heater to heat, such as cast iron, electrical short-circuit ring, car wheels, metal bars, pipes, bolts, screws large turbine, wind power blades slice,durability tester, gears, pulleys, couplings, etc. .

Magnetic bearings due to expensive

Magnetic bearings due to expensive, complex control system, the heating problem is difficult to solve, and therefore can not promote the use of the high-speed spindle unit.
Water-based hydrostatic super-precision bearing is currently the more popular research topic, it is the use of water has a large heat capacity, bearing temperature rise is small features, a partial solution to the ordinary move, hydrostatic bearing fever serious problems, mainly used in low-speed heavy-duty applications.
Air hybrid bearing radial stiffness and a low-impact, but high-speed performance, generally used in ultra-high speed, light load, the precision spindle.
Angular contact ball Slewing bearing dn value in 2.0 × 106 following the application of a high-speed spindle unit, whether it is the speed limit, all aspects of carrying capacity, rigidity, precision can satisfy the requirements and have been standardized, inexpensive,
Angular contact ball bearings but also through the following methods to improve performance.

Also known as induction heating power induction heater

Also known as induction heating Cross roller bearing induction heater, also known as induction heating equipment, all collectively work piece is heated both involve induction heating include: induction heating power supplies, induction heating equipment, bearing heater, bearing induction heater, including industrial after preheating induction heating power supply piping hot, Evaporation, copper brazing used, the basic working principle is to use alternating current generates an alternating magnetic field, the alternating magnetic field which is generated inside the metal conductor eddy (eddy current), heat rapidly so that the metal of the workpiece, in general, the heating effect, there is a frequency, a current, a magnetic field joint decision.
In induction heating, the temperature rise of the workpiece to be heated is a metal part, there will be induced heat the heater itself, most of the work to be induced through the use of cooling water to cool the heated portion of the workpiece is not a non-metallic heat .
All metal parts can be used induction heater to heat, such as cast iron, electrical short-circuit ring, car wheels, metal bars, pipes, bolts, screws large turbine, wind power blades slice, journal bearing, gears, pulleys, couplings, etc. .