GB/T 2855.10-1990 Die sliding guide die seat intermediate guide column lower die seat GB/T2855.10-1990 standard download decompression password: www.bzxz.net
Some standard content:
National Standard of the People's Republic of China Sliding guide die holder Intermediate guide pillar lower die holder Holder for ball slide dte sets for press toolsDle holder for center pillar setsSubject content and scope of application GB/T 2855.10—90 Replaces GB2855.10-81 This standard specifies the materials, technical conditions, structural types and specifications of sliding guide die holders and intermediate guide pillar lower die holders for punching dies. This standard applies to sliding guide die sets for punching dies. Referenced standards Technical conditions for die set parts GB/T12446 GB9439Grey iron castings Materials, technical conditions, structural types and specifications of die holders3 GB9439. 3.1Material: HT200 3.2Technical conditions are in accordance with GB/T12446. 3.3Structural types and specifications are shown in the table. Approved by the State Administration of Technical Supervision on July 23, 1990 and implemented on May 1, 1991 GB/T2855.10-90 3.4Marking example: Die perimeter L=250mm, B=200mm, thickness H=50mm, middle guide column lower die seat: lower die seat 250×200×50GB/T2855.1036 Mountain die perimeter 7060125100 130110 170270230bzxz.net GB/T 2855.10 --90 d,(R7) Limit deviation basic dimension Basic dimension Limit deviation Die boundary 250||200 315250 LIBLB? GB/T 2855.10-90 210370270 410325550400 510f655590580 Basic dimension Limit deviation d (R7) Basic dimension Note, ①The shape and plane dimension of the platen are determined by the manufacturer. ②When installing B-type guide column, d(R7), d, (R7) are changed to d(H7), d, (H7). 38 Limit Deviation GB/T2855.10-—90 Additional Notes: This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. 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. 39 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.