Directly-drive servo electric jar

Abstract

A direct-drive servo electric cylinder comprises a screw, a nut, a casing, an end cover and a driving system. The driving system drives the nut to rotate on the screw, therefore, the screw moves linearly along the axial direction. Outside of the electric cylinder is closed by the casing and the end cover. The driving system consists of a motor stator and a motor rotor, wherein, the motor stator is fixed on the casing and the motor rotor is fixed on the nut. The nut and an inner circle of a bearing are connected with each other directly or are in integrated design. An outer circle of the bearing is fixed on the casing. A guide sleeve arranged on the end cover is used for guiding the linear motion of the screw. A dust cover is arranged at the tail of the end cover. A cooling groove is arranged in the casing. The cooling liquid circulates in the cooling groove by a pipe joint. The direct-drive electric cylinder of the invention has simple structure and good performance. As a standardization and serialization device, the direct-drive electric cylinder provides different specifications and types for choosing, which can meet different driving requirements.

Description

technical field [0001] The invention relates to the technical field of an electromechanical integration standard device, in particular to an electromechanical integration standard direct drive servo electric cylinder. Background technique [0002] The traditional electric cylinder is driven by the motor through the coupling to convert the rotation of the motor into a linear drive. Because it is a single electric drive, the structure is simple and easy to use (unlike a hydraulic cylinder that requires a complete set of hydraulic system to drive) , so it has been able to replace hydraulic cylinders in many fields. [0003] However, in view of the performance limitations of ordinary motors and the problems in the design of the drive system in the way of component connection, its thrust, speed, transmission accuracy, and efficiency are constrained, so its scope of use is limited. In recent years, due to the mature development of motors, bearings, screw parts, measurement techno...

AI Technical Summary

Problems solved by technology

However, it is not easy for users to build a set of electric cylinders for special purposes. They must consider what motors, transmission parts, bearings, measuring devices, etc., and these parts have their own specifications and standards, so it is necessary to meet Mutual optimal combination is a cumbersome work, and even unsatisfactory results cannot be achieved due to the mismatch of structure and size

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