Bi-directional constant force output air floating device

Abstract

The invention provides a bi-directional constant force output air floating device. The bi-directional constant force output air floating device comprises a cylinder barrel, a connecting rod piston, end covers, an output shaft and limiting blocks. The connecting rod piston is sleeved with the cylinder barrel, the two ends of the cylinder barrel are sealed through the end covers, two axial grooves which are symmetrical vertically are formed in the middle of the cylinder barrel, the two ends of each axial groove are provided with the limiting blocks, and the connecting rod piston comprises a first piston, a second piston and a piston rod, wherein the first piston and the second piston protrudes at the two ends of the connecting rod piston, the piston rod is arranged in the middle, minimum gaps are reserved between the first piston and the cylinder barrel and between the second piston and the cylinder barrel, and the middle of the piston rod is connected with an output shaft. The output shaft penetrates through the axial grooves in the cylinder barrel, the two ends of the cylinder barrel are provided with a first air inlet and a second air inlet respectively, and the first air inlet and the second air inlet are connected with a proportional valve and an air storage tank respectively through air pipes. The cylinder barrel and the connecting rod piston are integrally designed, radial throttling holes are evenly distributed in the connecting rod piston, the structure and the air supplying method are simple, the bearing capability is good, and high-precision constant force output can be achieved.

Description

technical field [0001] The invention relates to a constant force output device. Background technique [0002] According to different application environments and application requirements, there are various structures and implementation methods for constant force output. Dynamic constant force output refers to loading a constant force value on a dynamically moving target workpiece. [0003] Hanging the target workpiece through weights is the simplest and most commonly used method of applying constant force. Since the mass of the weight is constant, the force acting on the target workpiece remains unchanged, but when the target workpiece is accelerating or decelerating, the weight The weight will generate an additional force on the target workpiece due to the influence of its own inertial force, and the greater the mass of the weight, the greater the effect, so this method is only suitable for low-speed or uniform-speed movement of the target workpiece. Torque motors, hydrau...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the existing constant force output device that the output force value is difficult to keep constant, the sensor measurement is not accurate enough, and the constant force output accuracy is not high, the present invention provides a two-way constant force output air flotation device with accurate output force value and good stability.

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