GB/T 2855.14-1990 Punch die sliding guide die base four guide column lower die base GB/T2855.14-1990 standard download decompression password: www.bzxz.net
Some standard content:
National Standard of the People's Republic of China Sliding guide die holder Four guide pillar lower die holder Holder for sliding gulde die sets for press toolsDie holder for four pillar setsSubject content and scope of application GB/T 2855.14 90 Replaces GB2855.14--81 This standard specifies the materials, technical conditions, structural types and specifications of the four guide pillar lower die holder of the sliding guide die holder for press tools. This standard applies to the sliding guide die holder for press tools. 2 Reference standards GB/T 12446 Technical conditions for die holder parts GB9439 Grey cast iron parts 3 Materials, technical conditions, structural types and specifications of die holder3.1 _Material: HT 200 GB 9439. 3.2 Technical conditions According to the provisions of GB/T12446. 3.3 Structural types and specifications are shown in the figure and table. bZxz.net Approved by the State Administration of Technical Supervision on July 23, 1990 and implemented from May to January, 1991 3.4 Marking example GB/T 2855.14--90 Die perimeter L=200mm, B=160mm, thickness H=55mm, four-guide column lower die seat: lower die seat 200×160×55GB/T2855.1454 Others Concave horizontal perimeter TBD. 500315 GB/T 2855.14—90 510375 Basic size Limit deviation M14—6H M16--6H M20--6H M24—6H Die perimeter 8101580 1010580 GB/T 2855.14—90 940710 Note: ①The shape and plane dimensions of the platen are determined by the manufacturer. ②When installing the B-type guide column, d (R7) is changed to d (H7) SR 81059076100 Additional instructions: This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. d (R7) Basic dimensions This standard is under the jurisdiction of the National Technical Committee for Mold Standardization. This standard was drafted by the Mold Branch of Guilin Electric Science Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Wang Huachang and Qin Guangwei. This standard is entrusted to the Mold Branch of Guilin Electric Science Research Institute of the Ministry of Machinery and Electronics Industry for interpretation. 56 Limit deviation [M24-6 H 46 -0.030M24--6H46650 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.