JPS5564937A - Multiple axis pipe expanding device - Google Patents

Abstract

PURPOSE: To expand pipes based on control program and reduce number of steps by gauging the multiple axis pipe expanding device to the pipe hole coordinate axis core of a pipe plate.

CONSTITUTION: Upper and lower fixing tables 5, 27 are first mounted to the pipe plate 2 of a heat exchanger body. Next, the X-, Y-axes of the rails 8, 18 of the pipe expanding device are aligned to the X-, Y-axes of the pipe holes 4 of the pipe plate 2. Thence, with two of the pipe holes 4 at both ends in the X- or Y-axis direction of the pipe plate 2 as reference holes, a truck 15 or 23 moved to align the axial center of a pipe expanding jig 25 to the axial center of the reference holes. A guide plate 30 is made approximately parallel to a support table 7 to parallel adjust the support table 17 to the surface of the pipe plate 2. The X-axis truck 15 and Y-axis truck 23 are then slided by positioning signals and when the command set moving distance and the detection signals of detectors 11, 21 coincide, motors 10, 20 stop and this completes the positioning in the X-, Y-axis directions. While the plural expanding jigs 25 are being inserted into the pipe holes 4 by cylinders 26, the pipes are expanded.

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