MULTI PIERCING DEVICE CAPABLE OF MACHINING HOLES OF VARIOUS DIAMETERS BY INTEGRALLY ROTATING PIERCING PUNCHES AND PIERCING HOLES

摘要

PURPOSE: A multi piercing device is provided to facilitate piercing works by rotating integrally a plurality of piercing punches and piercing holes corresponding to piercing punches, thereby improving machining efficiency and productivity. CONSTITUTION: A machining section(100) can be elevated by an elevating device. A plurality of piercing punches(110) having different diameters are provided on the periphery of the machining section, and the machining section is rotatable. A support section(200) is located on the lower side of the machining. A plurality of piercing holes(210) corresponding to the piercing punches are formed on the upper surface of the support section which is rotatable. A rotating means(300) integrally rotates the machining section(100) and the support section(200). A control section(400) controls the elevating device and the rotating means.