| 摘要 |
PURPOSE:To obtain a portable bend correcting machine which can be handled easily and is excellent in its operability, by incorporating an oil tank and a piston operating pump mechanism in a casing body of the bend correcting machine, and fitting a receiving arm so as to be rotatable. CONSTITUTION:Whether a rod-like member to be corrected R is corrected by tension by moving backwards a hook 14 or is corrected by pressure by moving forwards the hook 14 is determined, and a position of a changeover valve 30 is selected by operating a lever 48. Subsequently, the member R is inserted through and placed between a tip projection 13a of a receiving arm 13 and the hook 14. Subsequently, a switch S of an electric motor 11 is depressed, a motor shaft 20 and a cam 21 are driven to rotate, a piston 22 is made to execute a reciprocating motion, oil in an oil tank 18 is absorbed and compressed, and pressurized oil is generated. Subsequently, pressurized oil generated in this way is transferred by pressure 25 to a cylinder 29 by a pump mechanism 19, is supplied to a retreating oil path 26 from a space 33a, and thereafter, is led into a front side cylinder chamber 24a, and is moved for retreat by pressing a piston 35. That is to say, by retreat of the piston 35, a piston rod 15 and the hook 14 are moved for retreat, and the member R is drawn against the arm 13 and is brought to the bend correction. |
