论文部分内容阅读
1 JB/T 2671.3-2010弯管机第3部分:精度我国液压弯管机产品在几何精度和工作精度方面目前执行的是JB3851-85《弯管机精度》标准。该标准由原长治锻压机床厂于上世纪80年代初负责起草。由于该产品在技术上的不断进步,其内容已失去标准的指导意义,而且已远远不能满足用户对产品在工作精度方面的要求。因此,该标准急需修订。根据中国机械工业联合会[2007]210号文关于下达“2007年行业标准项目计划”的通知和全国锻压机械标准化技术委员会的安排,长治市钜星锻压机械设备制造有限公司于2007年5月成立了《弯管机精度》标准修订工作组(项目编号2007-143),并及时开
1 JB / T 2671.3-2010 Bending Machine Part 3: Accuracy Our current hydraulic pipe bending machine products in the geometric accuracy and accuracy of the current implementation of the JB3851-85 “Bender accuracy” standard. The standard by the original Changzhi Forging Machine Tool Plant in the early 1980s responsible for the drafting. As the product of continuous improvement in technology, its content has lost the meaning of standard guidance, and has been far unable to meet the user’s product accuracy requirements. Therefore, the standard urgently needs revision. According to the Notice of China Machinery Industry Federation [2007] No. 210 on Issuing the “2007 Industry Standard Project Plan” and the arrangement of the National Technical Committee for Forging Machinery Standardization, Changzhi Juxing Forging Machinery Manufacturing Co., Ltd. in 2007 5 Month set up a “bending machine precision” standard revision Working Group (project number 2007-143), and in time to open