Reduction gear for SCARA industrial robot

Abstract

Provided is a reduction gear for an SCARA industrial robot. A motor is arranged on a forearm, the tail end of the forearm is connected with a ball spline mechanism through a bearing, and the motor outputs torque and rotating speed to a ball spline through a first level synchronous belt and a second level synchronous belt. According to the reduction gear for the SCARA industrial robot, an alternative solution of a harmonic drive is provided, a reducing mechanism with compound transmission through the second level synchronous belt is adopted, the barycener offset distance of the SCARA robot is reduced, and the improvement of the acceleration performance of the whole machine is facilitated; meanwhile, the reduction gear for the SCARA industrial robot has the advantages of being long in service face, high in precision, high in speed, stable in transmission, high in space utilization, low in heat productivity, low in noise and the like, the use performance is improved, and the cost of the whole machine is reduced.

Description

technical field [0001] The invention belongs to the technical field of industrial robots, and relates to a joint deceleration technology of a robot, in particular to a deceleration device for a SCARA industrial robot. Background technique [0002] Planar articulated robot, also known as SCARA (Selective Compliance Assembly Robot Arm) robot, is a robot arm used in assembly operations. In the development process of the industrial robot body, the joint deceleration device is a very critical link and one of the technical cores of the mechanical part of the entire robot. Moreover, the cost of joint reduction devices occupies a relatively large proportion in the total cost of mechanical components. [0003] The four-axis SCARA robot has three revolving joints whose axes are parallel to each other for positioning and orientation in the plane. The other joint is the movement joint, which is used to complete the movement of the end piece in a plane perpendicular to the plane. Gene...

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Problems solved by technology

[0005] The problem to be solved by the present invention is: the existing SCARA industrial robot joint deceleration device has problems such as low precision, short life, high noise and high calorific value, and domestic products have relatively large transmission compared with foreign high-end products, resulting in the robot The movement speed is low, whether it is from the reduction device technology itself or the domestic market demand, it is necessary to improve the existing joint reduction device

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