STRUCTURE OF JIG OF PIPE BENDER (INCLUDING ALL WORKPIECE SUCH AS 'ROUND PIPE, OTHER PIPE, PLATE MATERIAL, DIFFERENT SHAPE MATERIAL' MACHINED IN BENDER)

摘要

PROBLEM TO BE SOLVED: To solve problems in which a structure of a jig of a pipe bender with slip prevention means has square recessed grooves and square saw grooves engraved in a clamping face of the jig such as a bender clamp, and the square recessed grooves and the square saw grooves are slip prevention means of a pipe, and also the curve of the pipe is generated by the working of the slip prevention means and the bending accuracy can be secured, however the square grooves have perpendicular shapes and there is a risk of damaging the pipe, and the square grooves are easily worn and lacks durability.;SOLUTION: A jig 1 of a pipe bender includes clamping faces 100, 101 for sandwiching an outer circumference curved surface of a pipe. The clamping faces have peaks and valleys projected from the faces. The pitches between the peaks and the valleys are formed by the same bend angle as the outer circumference curved surface of the pipe, and are formed on a radial line segment 5 from the focal point of the curve of the pipe toward the circumference of the pipe. The clamping faces achieve a slip prevention effect on the pipe, and the improvement of the bending accuracy of the pipe and the improvement of quality can be expected.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT