A mechanically compensated constant force actuator

Abstract

The invention relates to a mechanically compensated constant force actuator, which includes a main thrust mechanism, an auxiliary thrust mechanism, a constant force output mechanism and a base. The constant force output mechanism is provided with a sliding table on the base. Thrust adjustment spring seat, main thrust spring and main thrust output spring seat, the main thrust adjustment spring seat is movably set on the base, the main thrust output spring seat is fixedly connected with the slide table, and two auxiliary thrust mechanisms are symmetrically arranged on the slide table On both sides, the auxiliary thrust mechanism includes an auxiliary adjustment spring seat, an auxiliary thrust spring and an auxiliary output spring seat, wherein the auxiliary adjustment spring seat includes an upper seat body and a lower seat body that are connected in rotation, and the lower seat body is movably arranged on the base. The thrust spring is arranged between the upper base body and the auxiliary output spring seat, and the auxiliary output spring seat is rotatably connected with the slide table. The invention ensures constant force output and adjustable constant force value, low cost, high precision and simple use.

Description

technical field [0001] The invention relates to a mechanical compensation type constant force actuator. Background technique [0002] With the development of science and technology, robots have been widely used in the field of automatic processing, and the development of robots in the field of grinding and polishing is particularly rapid. In the field of grinding and polishing, robots are mainly used to replace the traditional manual grinding and polishing of workpieces, such as grinding the surface of workpieces, deburring edges and corners, grinding welds, deburring inner holes, and processing holes and threads. Robot grinding and polishing It is suitable for many industries such as bathroom hardware, IT, auto parts, industrial parts, medical equipment, wood building materials, furniture manufacturing, civil products, etc. The use of robot grinding has the characteristics of long-term grinding, high efficiency, high quality and high stability. [0003] However, in the exi...

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Problems solved by technology

[0003] However, in the existing technology, after the robot grinding and polishing equipment undergoes relatively complicated robot processing and trial teaching work, due to the influence of factors such as robot precision and workpiece differences, it is often difficult to ensure constant force output grinding and polishing, which in turn affects the quality of grinding and polishing

In view of the above problems, people have developed a constant force actuator with compensation function, but the constant force actuator with compensation function in the prior art is generally composed of low resistance cylinder, servo proportional valve, displacement sensor, acceleration sensor, guide device and other components Composition, although it has compensation function and can achieve constant force output, but the control algorithm is complicated, it needs power supply and compressed air, and the price is very expensive

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