A high-precision constant force output air flotation device

Abstract

The invention provides a high-precision constant force-output air floatation device. The high-precision constant force-output air floatation device comprises an output air cylinder, a compensation air cylinder, a laser displacement sensor and a linear motor; the output air cylinder comprises a cylinder barrel, a first piston, an output shaft, an air storage sleeve and a pneumatic clamp; the compensation air cylinder comprises a compensating barrel, a second piston and a piston rod; the first piston is installed inside the cylinder barrel in a sleeved mode and is connected with the output shaft, the cylinder barrel is sleeved with the air storage sleeve, and an air storage cavity is formed by the air storage sleeve and the cylinder barrel; one end of the compensating barrel is fixed to the air storage sleeve, and an inner cavity of the compensating barrel is communicated with the air storage cavity; the second piston is installed in the compensating barrel in a sleeved mode and connected with the piston rod; the piston rod penetrates through an end cover and a pneumatic bearing and is connected with the linear motor; the laser displacement sensor is fixed to the cylinder barrel. According to the high-precision constant force-output air floatation device, the compensation air cylinder and the air storage sleeve are additionally arranged, so that the capacity of an air inlet cavity of the cylinder barrel is increased; constant force can be output precisely at a high speed through volume compensation and pneumatic control; the high-precision constant force-output air floatation device is simple in structure, high in precision and good in stability.

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 devices 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 high-precision constant force output with accurate output force value and good stability. Air flotation device

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