The round pin is towards flat hole frock

• Main Authors: YU CHUANLONG, YU HONGTIAN, YU XINGGUANG, SUN XIAODONG, MU JINCHENG
• Format: Patent
• Language: English
• Published: 29.07.2015
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

The utility model discloses a round pin is towards flat hole frock, it includes lower stool, lower mould, goes up the stool, goes up mould and cylinder, and the lower mould detachably be provided on the said stool down, upward the mould is detachable is provided said lower part of going up the stool, the cylinder lower part is fixed is provided down on the stool, cylinder upper portion detachably with the said stool of going up is connected, is used for driving go up the on-off action of mould, said go up the mould with the round pin portion that holds the round pin is all opened to corresponding position on the said lower mould, goes up the square hole that the mould is opened has the confession drill bit to pass through. Compare towards flat casement utensil with current round pin, both sides that the cylinder is provided the lower mould, the condition of atress during from round pin drilling, round pin the stress is more even, has guaranteed the size precision on the round pin square hole, tests according to industry in fact in addition, need use phi 40mm's round steel before improving towards the round pin of phi 36mm size, and with 38 round steel of phi ability product quality just after the operational development, has saved certain cost.