Piezoelectric actuating type accompanying hammering strengthening device and method for electric arc additive manufacturing

Abstract

The invention relates to the technical field of additive manufacturing, in particular to a piezoelectric actuating type accompanying hammering strengthening device and method for electric arc additive manufacturing, and the device comprises an accompanying gear transmission system and a piezoelectric hammering head; the following gear transmission system comprises an inner gear, a machine base, a hollow fixed shaft system, a motor, an input shaft system and a planet carrier system. The base is used for supporting the motor; the motor is connected with the input shaft system; the input shaft system transmits the motion to the hollow fixed shaft system; the hollow fixed shaft system is connected with the planet carrier system; the planet carrier system is in meshed connection with the inner gear through a gear; the piezoelectric hammering head system is vertically connected to the lower portion of the planet carrier system and right faces the weld joint, and the piezoelectric hammering head system rotates around the welding gun in a whole circle when rotating along with the planet carrier system. According to the invention, the whole-circle position control of the piezoelectric hammering head around the fixed hollow shaft can be realized, and the device has the advantages of accurate hammering force control, high hammering frequency and small structural size.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a piezoelectric-actuated accompanying hammering strengthening device and method for arc additive manufacturing. Background technique [0002] Arc additive manufacturing of metal parts is an important direction in the field of additive manufacturing. Arc additive manufacturing of metal parts often has problems such as coarse grains, initiation of internal defects, large residual stress, and weakening of mechanical properties. In order to improve the mechanical properties of metal additive parts, traditional arc welding uses hammering and rolling Pressure, ultrasonic shock and other methods are used to optimize the performance. Although the traditional method can improve the mechanical properties, the disadvantages are: 1) the hammering equipment is large, which is inconvenient to install and cannot achieve high hammering efficiency; 2) the labor intensity is high a...

AI Technical Summary

Problems solved by technology

Although the traditional method can improve the mechanical properties, the disadvantages are: 1) the hammering equipment is large, inconvenient to install, and can not achieve high hammering efficiency; 2) the labor intensity is high, the randomness is large, and it is not suitable for mass production; 3) Due to structural limitations, the range of adjustable hammering frequency and hammering force is small; 4) It is impossible to realize the full circle position control of the hammering head around the welding torch

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