Two-dimensional gas floating follow-up device for supplying constant suspension force

Abstract

The invention relates to a two-dimensional gas floating follow-up device for supplying constant suspension force, which comprises a gas floating shaft and gas floating sleeves, wherein the gas floating sleeves are sleeved on the gas floating shaft; at least two gas floating sleeves are arranged; the gas floating sleeves are hermetically connected with a gas storing sleeve; a gas storing cavity isformed between the gas storing sleeve and the gas floating shaft; a shaft center of the gas floating shaft is provided with a gas inlet channel; the gas inlet channel is connected with a compressed gas inlet pipe and is communicated with the gas storing cavity; the gas storing cavity is provided with a gas outlet; the gas outlet is communicated with the gas inlet of each gas floating sleeve through a connecting gas pipe; the gas floating device also comprises a slide block and a guide rail; the gas floating shaft is installed on the slide block; the slide block is installed on the guide rail in a sliding way; the gas storing sleeve is fixedly connected with a connecting plate; the connecting plate is fixedly connected with a gas floating pulley assembly; the shaft center of the gas floating pulley of the gas floating pulley assembly is provided with a gas inlet hole; the gas inlet hole is communicated with the connecting gas pipe; a suspension rope is sleeved on the gas floating pulley; and a moving member is suspended on the suspension rope. The device of the invention can prolong the horizontal movement distance, can effectively eliminate the influence of the additional force ofgas pipes, and has higher reliability.

Description

technical field [0001] The invention relates to an air flotation device, in particular to a suspension device providing constant suspension force and frictionless two-dimensional movement. Background technique [0002] For the two-dimensional hanging device that moves horizontally and vertically with the ground, the existing technology usually uses the suspension rope to directly hang the moving parts on the slider of the linear guide rail to realize the horizontal movement, and realize the vertical movement by tightening or loosening the suspension rope. Direction follow-up. However, since the measured force or moment is often very small, and in order to ensure the measurement accuracy, it is necessary to minimize the effect of additional force on the mechanism, the friction of the linear guide cannot be ignored. [0003] On the other hand, as a successful application of air suspension technology in mechanical relative motion, air bearing technology is quite mature. Air b...

AI Technical Summary

Problems solved by technology

For axial movement in this way, since the air bearing shaft is much longer than the air bearing sleeve, it is necessary to ensure that there are air holes in the entire movement range of the air bearing sleeve, so the gas leakage is large, and the leakage increases with the length of the air bearing shaft The amount is so huge that it cannot be realized in practical engineering applications.

But no matter which method is used to supply air, the compressed gas must be connected through the air pipe. When the air bearing shaft or the air bearing sleeve moves axially, the air pipe also needs to move, which will cause the air pipe to bend. Because the air pipe has a certain rigidity, this may have the effect of additional force

The additional force generated will inevitably be transmitted to the moving parts, thus affecting the spatial position and movement of the moving parts

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