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With the development of science and technology, the development of CNC plasma cutting machines is also very mature in the country. Its characteristics are fast cutting speed, especially the efficiency of cutting thin plates. However, there is always a problem when everyone faces the problem of cutting heat. In order to solve this problem, some advantages and characteristics of plasma cutting machines used by our company have adopted plasma underwater cutting operations. In particular, the technology of CNC underwater plasma cutting machines is increasing. We all know that dry plasma cutting can easily generate large amounts of metal dust, unpleasant gases, and strong glare. Some of the cutting incidental problems can cause headaches for customers, in order to solve this problem. The advantages of underwater plasma cutting machine are reflected. Underwater plasma cutting machine working principle is that underwater plasma cutting can remove dust, a water level can be raised and lowered cutting platform, when the beginning of the cutting, the inlet valve opens the fan water supply bed airbag inflated, the water level rises quickly, when the water just flooded the steel plate close the pneumatic Valve, the water level stops moving, smoke and dust produced when cutting are all absorbed by water. When the cutting is finished, the outlet valve opens and the deflated water level of the airbag descends so that the operator can mark and cut the material. This dust removal method is currently the best dust removal method for dust removal effect, but due to the influence of water, the cutting speed, cutting ability, and surface The degree of finish is lower than that of dry cutting, and the power consumption when cutting steel plates of the same thickness is about 15% higher than that of dry cutting. The manufacturing cost of the water bed is relatively high. Of course, this aspect is also constantly exploring and improving. In addition, the underwater plasma cutting must be equipped with a collision avoidance device or an arc voltage automatic height-adjustment device. When underwater cutting, the surface of the water due to the arc striking and the impact of cutting gas can easily make the water turbid, and the naked eye cannot see the cut at all. The position of the gun and the distance from the torch to the height of the steel plate. During the cutting process, if the deformed steel plate protrudes, it will collide with the cutting torch, causing the torch to break or damage. When cutting, the height of the horizontal plane from the steel plate is 3-5mm. can. The most obvious characteristic of the underwater plasma cutting machine in terms of its design is that the beam adopts a wide-body reinforced box structure and has a beautiful appearance. The end frame adopts a low center of gravity structure, symmetrical structure, good stability, and all welding are stress-relief processing, ensuring the overall rigidity and good dynamic balance.
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Their rollers and the outer wheels are arranged in a right angle intersecting intersecting. They can bear the load from all directions at the same time (such as axial, thrust or momentum hormones, etc.). Because of the linear contact between the roller and the track surface, the possibility of the axis to bear the load and the elastic deformation is very small. This type of bearing is widely used in industrial robots, working machines and medical facilities. It needs high rigidity, high speed and high speed to ensure precise occasions.
In cross roller bearings, cylindrical rollers are perpendicular to each other through spacer retainers on the top, so 1 cross roller bearings can bear all loads of radial load, axial load and torque load. Ring size is the minimum limit of miniaturization, especially very thin type is small size close to the limit, and has high rigidity, so the most suitable for use in industrial robot joint or rotating parts, machining center machine rotary table, hand rotating parts, precision rotary table, medical machine, metering device, IC manufacturing equipment etc.
1. Excellent rotation accuracy
The inner structure of the Cross Roller Bearing is arranged in 90 degrees perpendicular to each other by the roller.
The roller is equipped with a spacer or isolation block between the rollers to prevent the rolling of the rollers from being examined each other. In addition, the phenomenon of roller contact or locking will not occur. At the same time, because the inner and outer ring is a segmented structure, the clearance can be adjusted, even if the preload is applied, high accuracy rotation motion can also be achieved.
2. Simplification of operation and installation
The outer ring or inner ring, which is divided into 2 parts, is fixed together after loading the roller and the holder, so the operation is very simple.
3. Bear large axial and radial load
The roller is arranged vertically through the spacer retainer on a 90 degree V groove rolling surface.
4. Greatly save the installation space
The size of the inner and outer ring cross Roller Bearing is miniature minimal, especially ultra-thin structure is small size close to the limit, and has high rigidity, so the most suitable for industrial robot joints or rotating parts, machining center of the rotary table, the robot rotating parts, precision rotary table, medical instrument IC, measuring equipment, manufacturing device widely used.
5. high speed ability
6. reducing shaft length and machining cost, thermal expansion leads to a limited change in geometric size.
7. the nylon separator is used, the moment of inertia is low, the starting torque is low, and the angle degree is easy to control.
8. optimization of pretightening force, large rigidity, high precision of guiding roller
9. carbon steel provides excellent impact resistance and surface abrasion resistance
10. simple but fully lubricated
Crb Bearing,Cross Roller Slewing Bearing,Crb Turntable Slewing Bearing,Cross Roller Slewing Bearing Crb
LUOYANG AUTO BEARING CO.,LTD , http://www.lyautobearing.com