Hollow hydraulic braking third harmonic speed reduction all-in-one machine

Abstract

The invention discloses a hollow hydraulic braking third harmonic speed reduction all-in-one machine, and the machine comprises a harmonic speed reduction part, wherein the harmonic speed reduction part comprises a fixed shell, a third harmonic speed reducer and an input shaft, the third harmonic speed reducer is arranged on the fixed shell, and the input shaft is arranged on the third harmonic speed reducer; a power supply part which comprises a motor shell, a stator and a rotor, wherein the motor shell is arranged on the fixed shell, the stator is arranged on the motor shell, and the rotor is arranged on the input shaft; an output supporting part which comprises a first bearing and an output shaft, wherein the first bearing is arranged on the fixing shell, the output shaft is arranged on the first bearing, and the output shaft is connected with the third harmonic reducer; and a hydraulic brake part which can brake the output shaft. The machine has the advantages of compact structure, innovative layout, high integration level, small volume, light weight, convenience in installation, high output rigidity, high output precision, large output torque, good braking effect, extremely small reverse back clearance and long precision retention time.

Description

technical field [0001] The present invention relates to the technical field of motor and harmonic reducer combination machine, more specifically, the present invention relates to a hollow hydraulic braking triple harmonic reducer machine. Background technique [0002] Hollow hydraulic brake third harmonic deceleration integrated machine is a rotary actuator, which integrates high torque motor, third harmonic reducer and hydraulic brake into a rotary actuator unit, relying on the high stiffness of the third harmonic reducer , high-precision, high-torque output characteristics, combined with the characteristics of small volume and large friction torque of hydraulic brakes, it can output high rigidity, high precision and large torque at the same time, and provide super large braking torque output characteristics, especially for machine tool accessories Fields provide an ideal PTO. At present, there are mainly two forms of power output solutions in the field of machine tool acc...

AI Technical Summary

Problems solved by technology

At present, there are mainly two forms of power output solutions in the field of machine tool accessories, one is the transmission system of the worm gear reduction system combined with the servo motor, plus a hydraulic brake unit, and the other is the combination of the roller cam reduction system and the servo motor. The transmission system, coupled with the hydraulic brake unit, but the structural arrangement of the two power output schemes is generally decentralized, and the deceleration unit, power unit and brake unit are generally separated independently, which makes the machine tool accessories on the market In particular, the turntable is large in size and heavy in weight, and takes up a large working space when it is installed on the workbench of the machine tool.

Moreover, the deceleration units of the two schemes need to be soaked in lubricating oil for lubrication and heat dissipation, which makes it inconvenient to assemble and maintain the whole machine, and the worm gear and roller cam drive are both hard squeezed in principle. Pressure transmission, the efficiency is low, and the transmission accuracy decreases with the increase of use time, and regular precision adjustment is required. Both solutions have certain disadvantages in processing and material use.

In addition, for the common rotary actuator unit composed of harmonic reducer and motor currently on the market, the braking device is installed at the end of the servo motor, which is generally a de-energized electromagnetic brake, not the braking at the output end. The maximum braking torque It cannot exceed the maximum allowable torque of the reducer, and the static holding stiffness of the reducer is limited, which cannot meet the demand in some usage scenarios, especially when a large holding processing torque is required, such as a machine tool accessory turntable.

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