Hammering strengthening machine for workpiece in additive manufacturing process for metal

Abstract

The invention discloses a hammering strengthening machine for a workpiece in an additive manufacturing process for metal. The hammering strengthening machine for the workpiece in the additive manufacturing process for metal comprises a base, a guide rail and a fourth stepping motor, wherein installation grooves in different shapes are formed in the left end, the right end, the middle part and the right side of the front surface of the base separately, supporting plates with L-shaped structures are installed at the left end and the right end of the upper surface of the base separately, a top plate is fixedly connected to the top ends of the supporting plates, and rotary discs with annular structures are arranged at the upper ends in the installation grooves which are formed in the middle part of the upper surface of the base; grooves are formed in the middle parts of the side ring surfaces of the rotary discs, and a first stepping motor is arranged in the installation groove which is formed in the left side of the upper surface of the base. The position and angle of a hammer head are convenient to adjust, the equipment is high in fixing performance for the workpiece, and meanwhile, the equipment can automatically adjust the position and angle of the workpiece during working, so that the equipment can hammer the corner positions of the workpiece, and the equipment is convenient to use.

Description

technical field [0001] The invention relates to the technical field of hammer strengthening machines, in particular to a hammer strengthening machine for workpieces in the metal additive manufacturing process. Background technique [0002] In the additive manufacturing process, computer design software is used to make a 3D model of the workpiece, and then the 3D model is layered and sliced ​​in the computer to discretize the 3D model into a series of 2D layers, and path planning and parameter optimization are performed on each layer, and then The energy source is used to scan layer by layer and add material layer by layer to convert the 3D model into a solid workpiece. However, in the existing metal additive manufacturing process, the molten metal melts and solidifies rapidly under a large temperature gradient, which may be Various special internal metallurgical defects, such as local lack of fusion, air gaps, entanglement and precipitation pores, cracks, and serious It aff...

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Problems solved by technology

[0002] In the additive manufacturing process, computer design software is used to make a 3D model of the workpiece, and then the 3D model is layered and sliced ​​in the computer to discretize the 3D model into a series of 2D layers, and path planning and parameter optimization are performed on each layer, and then The energy source is used to scan layer by layer and add material layer by layer to convert the 3D model into a solid workpiece. However, in the existing metal additive manufacturing process, the molten metal melts and solidifies rapidly under a large temperature gradient, which may be Various special internal metallurgical defects, such as local lack of fusion, air gaps, entanglement and precipitation pores, cracks, and serious It affects the internal quality and mechanical properties of the molded workpiece, and at the same time affects the surface accuracy and mechanical properties of the workpiece. In addition, the top interface of the molten pool of the molded workpiece is similar to an ellipsoid, resulting in poor flatness of the surface of the molded layer. With the accumulation of the molded layer and The continuous increase in the size of the formed part will easily lead to problems such as edge collapse and sag. Therefore, in the process of metal additive manufacturing, it is necessary to use hammering equipment to hammer the workpiece to eliminate the residual internal stress of the workpiece and suppress pores and cracks. It can improve the surface precision of the formed workpiece, improve the manufacturing accuracy and mechanical properties of the formed workpiece, but the existing hammering equipment is difficult to adjust the position of the hammer head, and it is difficult to hammer the corner position of the workpiece. The fixed stability is poor, and it is difficult to automatically adjust the angle and position of the workpiece, which makes the use of hammering equipment more inconvenient

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