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                             Square Valve Seat CNC Circular Seam Automatic Welding Machine

1. Design Mission

Hydraulic cylinder CNC circular seam automatic welding machine should meet the automatic welding of U-shape and circular seam. Make sure that welding specification is uniform, with good and smooth seam appearance. Convenient and reliable to operate. Using Morse 5 thimble and double support.

2.Welding Specification and Basic Feature

The workpiece rotates, welding torch moves up-down, side to side and angled turn to cooperate with workpiece. Adopt push type wire feeding mechanism to guarantee the stability of feeding wire.

Adopt CNC system, control 5-dimensions action: rotation, welding torch up-down, forward and backward, left&right and turning angle. Walking out of the welding path, to achieve the normal welding of U-shaped seam when the arc is burning continuously.

The rotation speed of rotation axis is based on the rotary position of workpiece, to guarantee the consistency of welding linear speed.

In the rotation process of workpiece, the distance between welding torch and workpiece is not changed, the included angle is changed between 0°- 90°.

Using PLC and 5 axis CNC control system to realize the above process, improve the reliability.

Welding power source has good arc igniting, arc stabilizing and arc ending performance, to make sure uniform and even welding seam.


3.Machine body

It consists of machine base, gantry beam and sliding door. Machine base is welded by square tube and steel plate. The base adopts plane processing and installs rail. Power head is installed in left side of rail, pneumatic tail-stock is installed in right side of rail.
Pneumatic tail-stock can be adjusted along with rail, the distance is changeable, to meet welding requirement of different varieties, it can be locked after adjustment.

Power head and pneumatic tail-stock are guided by linear rail, to guarantee the concentricity with back tail-stock.

The gantry beam is welded with square tube and sheet metal and fixed on the base. Gantry beam adopts plane processing, rail is placed in the gantry beam. The The mechanisms of welding torch up&down, side to side and angled turn are mounted on the rail, it can be adjusted along with rail, the distance is adjustable, it can be locked after adjustment.

In the middle of machine body is mounted with pneumatic loading and unloading mechanism. In the right posterior side is electric control cabinet, control button station is mounted In the right anterior, easy to operate and maintain. 
Sliding door is made of steel plate, with strong intensity. There is a inspection window on the door. Welding process can be observed in the mirror.

4.Technical Parameter