A mechanical device for realizing the control function of welding bed and CNC machine tool center point

Abstract

The invention relates to the field of machinery, in particular to a mechanical device for carrying out the tool center point control function of welding machines and numerically controlled machine tools. The mechanical device comprises a parallel four-bar mechanism, a power unit, a transmission and a welding gun; the parallel four-bar mechanism comprises cranks and connecting bars; one of the connecting bars is located on the extension direction of the other connecting bar and fixedly connected with one end of the connecting bar; the power unit is used for supplying power to the parallel four-bar mechanism; the transmission is used for synchronously transmitting the revolution of one crank to the welding gun located on one connecting bar, and moreover, the revolving radius of the welding tip of the welding gun is equal to the revolving radius of the crank. When used on a numerically controlled machine tool, the mechanical device can mechanically carry out the tool center point (RTCP) function of the numerically controlled machine tool, so that the programming of the numerically controlled machine tool is simple and convenient. When used on a welding machine, the mechanical device can ensure that the welding angle and welding trajectory of the welding gun can be conveniently adjusted, and thereby welding is more reliable and attractive.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a mechanical device for realizing the control function of the center point of a welding bed and a CNC machine tool tool. Background technique [0002] like Figure 5 As shown, the tool center point control is also called RTCP in the field of CNC machine tools. That is, during the machining of workpieces by the CNC machine tool, the tip of the tool 501 runs along the programmed trajectory 502 . When the workpiece needs to be processed from different angles, the swing arm connected to the cutter 501 rotates at a certain angle, so that the cutter 501 cuts the workpiece according to a predetermined angle. However, when the swing arm rotates, it will drive the movement of the position of the tool tip, that is, the position of the tool will move to Figure 5 The position of the offset tool 503 shown by the dotted line in the middle causes the position of the tool tip to deviate from the program...

AI Technical Summary

Problems solved by technology

[0004] And when being the welding seam of planar convex profile for welding shape, the welding torch of welding bed of prior art moves with the fixed posture angle along with the track of welding seam, can not adjust the posture angle of welding torch along with the curvature variation of welding seam

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