Solution For the planetary drive gear tooth load distribution, increase the comprehensive elastic coefficient ki on the input and output paths of any planetary gear or reduce the meshing elastic coefficient of any planetary gear and center gear tooth to kxi, which can reduce the maximum tooth The force Fxmax, but can not completely eliminate the impact of the planet carrier and planetary axle deformation. The effects of planetary carrier and planetary axle distortion can be completely eliminated. When the self-aligning bearing 3 in FIG. 9 works, the inner and outer rings are allowed to have a certain relative rotation angle. When the carrier and the planetary axle are loaded, the deformation generated by the self-aligning bearing is offset by the relative rotation of the inner and outer rings of the self-aligning bearing, thereby Ensure that the axes of the planetary gears and the center wheel are parallel, and the tooth load distribution of the meshing parts is even.
For the inter-tooth load distribution of planetary gears greater than or equal to 4 planets, the maximum inter-tooth load Fxmax depends on the consistency between the spring constant kr and the distance Lr of the planet wheel axis from the theoretical circle; the higher the machining accuracy, the Lrn's The better the consistency, the smaller the maximum inter-tooth load Fxmax, but the higher the corresponding cost; the method of reducing the elastic modulus kr can also be used to reduce the maximum inter-tooth load. Under the premise of meeting the strength requirements, the planetary wheel diameter should be reduced as much as possible, and the round hole can be made at the center of the planetary wheel. At the same time, the bearing can be placed in the middle part, and the elastic coefficient kr can be reduced, thereby reducing the maximum inter-tooth load.
In the planetary transmission structure, the uneven distribution of gear tooth load is aggravated as the input load increases. According to the finite element analysis, the tooth load distribution is uneven, and the additional stress is a high proportion. This is extremely unfavorable for the low-speed heavy-duty planetary transmission. The mechanism of the planetary wheel single-steering bearing support can completely eliminate the tooth direction. The load distribution is uneven. Through research and analysis, the reasons for the coaxiality of the inner and outer circumference of the catheter are analyzed. The advanced methods and detection and rework methods for processing the conduit holes in domestic excellent enterprises are analyzed and compared. Facts have proved that the use of catheter outer circle positioning processing of the conduit hole, and the application of multi-station in the batch machine line is an advanced and reliable, no loss of efficiency, for the subsequent similar hole processing, there is a certain reference significance.
Pneumatic actuators and Pneumatic Cylinders move a load using pressurized air stored within a piston or diaphragm. Depending on the direction of the load, you`ll either need an air cylinder or rotary actuator.
Pneumatic Cylinders, commonly known as air cylinders or air rams, move a load in a straight line using a piston rod. Compressed air either pushes or pulls the piston rod in and out of the cylinder barrel.
Single-acting cylinders use one compressed air port to either push or pull the rod in a single direction. The rod then returns via spring action. Double-acting cylinders use compressed air ports on both ends of the cylinder to extend and retract the rod. Certain series of cylinders come with cushions, which allows for quieter piston operation. Most air cylinders have several different mounting types available.
Choose from guided cylinders, clamping cylinders, stopper cylinders, rodless cylinders, compact cylinders, round body cylinders, and standard cylinders. In contrast to air cylinders, rotary actuators rotate objects around an axis. They use compressed air that produces continuous torque. Although pneumatic cylinders will vary in appearance, size and function, they generally fall into one of the specific categories shown below. However there are also numerous other types of pneumatic cylinder available, many of which are designed to fulfill specific and specialized functions.
Pneumatic Air Cylinder, Air Pneumatic Cylinder, Air Cylinders Pneumatic, Pneumatic Air Cylinders
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