Servo motor drive multi-motion-degree connecting rod mechanism for oxygen-acetylene cutting machine

Abstract

The invention relates to a servo motor drive multi-motion-degree connecting rod mechanism for an oxygen-acetylene cutting machine. The servo motor drive multi-motion-degree connecting rod mechanism comprises a base, a large arm lifting mechanism, a clamp connecting rod pitching mechanism, a clamp, a cutting gun and a servo drive device; the large arm lifting mechanism is composed of a second driving rod (19), a third connecting rod (3) and a large arm (5), one end of the second driving rod (19) is connected with the base (1) through a second rotation pair (17), the other end of the second driving rod (19) is connected with the large arm (5) through a third rotation pair (18), one end of the third connecting rod (3) is connected with the base (1) through a tenth rotation pair (2), and the other end of the third connecting rod (3) is connected with the large arm (5) through a first rotation pair (4); and the servo drive device comprises a first servo motor and a second servo motor which are connected with a first driving rod (15) and the second driving rod (19) to drive the first driving rod (15) and the second driving rod (19) to rotate correspondingly, motions of lifting of the large arm, pitching of a clamp connecting rod (7) and the clamp (27) and the like are jointly completed, and the oxygen-acetylene cutting operation of the cutting gun (28) is achieved. By means of the servo motor drive multi-motion-degree connecting rod mechanism, the defect that a driving motor of an open chain structure needs to be installed at the joint position is overcome, and the arm running stability and reliability are improved.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a servo motor-driven multi-movement link mechanism for a gas cutting blanking 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 installed at the j...

AI Technical Summary

Problems solved by technology

[0004] A servo motor-driven link type variable-degree-of-freedom gas cutting cutting machine of the present invention adopts a controllable multi-rod closed-chain mechanism, which overcomes the disadvantage that the driving motors of the open-chain structure need to be installed at joint positions, and improves the stability of the arm operation Excellent performance and reliability, no cumulative error, high precision; compact structure, high rigidity, large load-carrying capacity, low inertia, good dynamic performance, flexible and diversified arm movement trajectory, overcoming the precision requirements of the hydraulic system components of the hydraulic gas cutting machine High, complex structure, easy oil leakage, poor reliability, low transmission efficiency and other disadvantages

Images