Polar coordinate mechanical arm

Abstract

The invention relates to a polar coordinate mechanical arm which consists of a base, a rotary hydraulic cylinder, a rotary table, a pitching hydraulic cylinder, photoelectric detection devices, an upright column, a telescopic hydraulic cylinder and a paw; the upright column and the pitching hydraulic cylinder are arranged on the rotary table; the telescopic hydraulic cylinder is connected with theupright column and the pitching hydraulic cylinder through hinges; the paw is arranged on a hydraulic cylinder rod of the telescopic hydraulic cylinder; the rotary table is connected with the rotaryhydraulic cylinder in the base; the photoelectric detection devices consist of infrared photoelectric sensors and transmitting type gratings; the infrared photoelectric sensors are arranged on hydraulic cylinder bodies; and the transmitting type gratings are arranged on hydraulic cylinder rods. The transmitting type gratings are driven to generate optoelectronic signal pulses through the movementof the hydraulic cylinder rods, and the controller judges whether the polar coordinate mechanical arm moves in place according to optoelectronic signals fed back to an input end and then controls thehydraulic cylinders to move or stop, the any locating requirement of the polar coordinate mechanical arm can be realized, and the polar coordinate mechanical arm has the characteristics of low cost and high universality accordingly.

Description

technical field [0001] The invention relates to the technical field of mechanical arms, in particular to a polar coordinate mechanical arm. Background technique [0002] With the wide application of manipulator technology, general-purpose manipulators with independent controllers, flexible movements, and suitable for small and medium-sized batches of automated production have developed rapidly. The driving manipulator has good control performance, fast response, and accurate positioning, but it is not conducive to fire and explosion protection, and the cost is high; most of the existing hydraulically driven manipulators are special-purpose manipulators, which are designed for special occasions and purposes, and lack versatility. The universal hydraulic manipulator with low cost and easy maintenance is in line with the development concept of high efficiency, low cost, safety and environmental protection in today's society. Therefore, the role of small and medium batch automat...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high cost and poor versatility of existing hydraulic manipulators, and propose a polar coordinate hydraulic manipulator, which can realize the motion of three degrees of freedom of pitching, stretching, and turning, and has low cost and general versatility. Strong features, can be used in small and medium batch automated production in modern manufacturing

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