Electric cylinder with thrust or pull force sensing

Abstract

The invention discloses an electric cylinder with thrust or pull force sensing. The electric cylinder includes an electric cylinder tube, a piston rod, a transmission screw, a transmission gear set and a thrust or pull force detection unit, wherein a left end of the electric cylinder tube is equipped with a front cylinder cover, a right end of the electric cylinder tube is equipped with a rear cylinder cover, the rear cylinder cover is internally equipped with a fixing plate, a bottom end of a left side of the rear cylinder cover is equipped with a motor, an inner portion of the electric cylinder tube is a hollow structure, the inner portion of the electric cylinder tube is equipped with a guide bar, the middle of the piston rod is provided with a through hole, the through hole penetratesthrough a right end of the piston rod, and the piston rod is mounted in the electric cylinder tube. The electric cylinder is advantaged in that the electric cylinder has the real-time thrust or pull force sensing function and has the thrust or pressure buffer function, pressure holding and pressure or pull force control functions can be achieved, cylinders and hydraulic cylinders can be directly replaced without leakage or pollution, and cost is saved.

Description

technical field [0001] The invention relates to the technical field of electric cylinders, in particular to an electric cylinder with thrust or pull sensing. Background technique [0002] The electric cylinder is a modular product with an integrated design of the servo motor and the lead screw. It converts the rotational motion of the servo motor into linear motion, can accurately control the number of revolutions, and realize high-precision linear motion. Traditional electric cylinders and linear motion modules do not have thrust , The function of tension detection cannot be used instead of hydraulic cylinders and air cylinders in some specific applications, such as mold pressing, deep hole drilling equipment mold positioning, and occasions where thrust and pressure maintenance are required, a stable thrust or tension must be maintained. When the size changes, it can still maintain a constant thrust or pulling force. The traditional electric cylinder and linear motion modul...

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Problems solved by technology

[0002] The electric cylinder is a modular product with an integrated design of the servo motor and the lead screw. It converts the rotational motion of the servo motor into linear motion, can accurately control the number of revolutions, and realize high-precision linear motion. Traditional electric cylinders and linear motion modules do not have thrust , The function of tension detection cannot be used instead of hydraulic cylinders and air cylinders in some specific applications, such as mold pressing, deep hole drilling equipment mold positioning, and occasions where thrust and pressure maintenance are required, a stable thrust or tension must be maintained. When the size changes, it can still maintain a constant thrust or pulling force. The traditional electric cylinder and linear motion module only realize the linear motion of the hydraulic cylinder and air cylinder, and cannot truly simulate the pressure and buffering effect of the hydraulic cylinder and air cylinder, and the traditional electric cylinder is added with a load cell. It can realize part of the thrust and tension detection function, but because the deformation of the load cell is too small and the rigidity is too large, it is difficult to realize the force buffer function, and it is easy to be damaged under frequent impact loads. At the same time, due to the large size and high cost of the external load cell There is not enough installation space in the application, and the cost is too high. Compared with hydraulic cylinders and pneumatic cylinders, there is no advantage

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