A CNC three-axis positioner and a CNC six-axis automatic welding unit

Abstract

The invention discloses a numerically-controlled three-axis position-changing machine which comprises a rotary table, a bracket mounted on the rotary table, a roll-over table arranged on the bracket through shafts, a roll-over table driving mechanism mounted on the bracket, a rotary mandrel mounted in the rotary table through shafts and used for mounting a to-be-welded workpiece, and a rotary mandrel driving mechanism mounted on the roll-over table, wherein the rotary table rotates around a first axis; the roll-over table driving mechanism drives the roll-over table to rotate around a second axis; the rotary mandrel driving mechanism drives the rotary mandrel to rotate around a third axis and is a hollow mandrel; the hollow mandrel is provided with an inner hole extending along the third axis; and the inner hole allows a welding gun to pass through to extend into the to-be-welded workpiece. The numerically-controlled three-axis position-changing machine can realize three-axis rotation of a valve body and realizes the function of performing double-side welding through once clamping. Moreover, since the numerically-controlled three-axis position-changing machine adopts an automatic positioning clamping mechanism to clamp the to-be-welded workpiece, the clamping efficiency is increased. The numerically-controlled three-axis position-changing machine and a welding robot can form a numerically-controlled six-axis full-automatic welding set which is suitable for welding of various complex parts.

Description

technical field [0001] The invention relates to the technical field of numerical control welding, in particular to a numerical control three-axis positioner and a numerical control six-axis full-automatic welding unit for welding workpiece movement and clamping. Background technique [0002] At present, there are existing wedge gate valves with welded replacement seats, including ANSI / API600, API603, JISB2073, JIS2083, JISB2071, JISB20447, GB / T12234, MSS-SP-42, DIN3352, BS1414 and other standard series. Welding grooves are directly processed in the straight-through cylindrical through-hole flow channel, and the cross-section of the welded part of the valve seat formed after processing is elliptical. Therefore, the welding of the valve seat can only be carried out by manual welding, which is inefficient and easy to form at the welded part. It is jagged and needs to be polished later, which is labor-intensive. In order to solve this technical problem, the industry generally u...

AI Technical Summary

Problems solved by technology

[0007] The second technical problem to be solved by the present invention is to provide a numerically controlled three-axis positioner capable of clamping double-sided welding at one time and without overhead welding in the welding process in view of the shortcomings of the sealing valve seat welding of the above-mentioned gate valve.

Images