Servo motor driven variable degree-of-freedom connecting mechanism for simple oxygen-acetylene cutting machine

Abstract

The invention relates to a servo motor driven variable degree-of-freedom connecting mechanism for a simple oxygen-acetylene cutting machine. The mechanism comprises a base 1, a large arm 17, a clamp holder connecting rod pitch mechanism, a clamp holder 21, a cutting gun 22, a servo driving device, a first locking device 8 and a second locking device 16; the clamp holder connecting rod pitch mechanism is composed of clamp holder connecting rod and a pitch mechanism, the clamp holder connecting rod is connected to the large arm 17 through a ninth revolute pair 19 and a tenth revolute pair 20 which are coaxial, the pitch mechanism is composed of a driving piece 3, a first connecting rod 5, a second connecting rod 10 and a third connecting rod 9, and the first locking device 8 and the second locking device 16 are separately mounted on a fourth revolute pair 7 and the seventh revolute pair 15 and timely lock according to different working conditions of the mechanism; the first locking device 8 and the second locking device 16 lock in an electromagnetic mode. The mechanism provided by the invention overcomes the defect that driving motors of open chain structures need to be mounted in joint positions, and the quantity of used controllable driving motors is smaller than the degree of freedom of an oxygen-acetylene cutting connecting mechanism.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a servo motor-driven variable-degree-of-freedom link mechanism for a simple gas cutting cutting machine. Background technique [0002] At present, most of the general-purpose gas cutting cutting machines in the manufacturing industry are joint-type motor-driven manipulators with a series structure in the form of an open chain. Various actions of the manipulator. Since the driving motors of the joint-type manipulators with series structure in the form of open chain are installed at the joints, this structure has the following problems: the manipulator arm needs to carry the weight of the motor and meet the rigidity requirements, and the cross-sectional size of the arm needs to be made larger. This will increase the load on the drive motor, increase the moment of inertia of the arm, and lead to a decrease in the dynamic performance of the manipulator. At the same time, the drive motors are ...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a servo motor-driven variable-degree-of-freedom linkage mechanism for a simple gas cutting cutting machine, which overcomes the shortcomings of high precision components, complex structure, and easy oil leakage in the hydraulic system of a hydraulic gas cutting cutting machine. It overcomes the disadvantage that the driving motors of the open chain structure need to be installed at the joint position, and makes the number of controllable driving motors less than the degree of freedom of the connecting rod mechanism of the gas cutting machine, and overcomes the need for the existing mechanical electric gas cutting cutting mechanism to be equipped with a connection. The shortcomings of controlling the same number of control motors as the degree of freedom of the rod mechanism simplify the complexity of the structure and reduce the weight, moment of inertia, volume and cost of the mechanism

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