IB/T 2257.2-1999 This standard is a revision of JB 2669-80 "Types and parameters of sheet metal bending presses". During the revision, the parameter names were modified and legal measurement units were adopted. This standard specifies the types and basic parameters of sheet metal bending machines. This standard is applicable to sheet metal bending machines. This standard was first issued in August 1980. JB/T 2257.2-1999 Types and basic parameters of sheet metal bending machines JB/T2257.2-1999 Standard download decompression password: www.bzxz.net

ICS 25.120.10
Standard of the Machinery Industry of the People's Republic of China
.JB/T2257.2-1999
Sheet Metal Bending Machine
1999-05-14 Release
Type and Basic ParametersbZxz.net
2000-01-01 Implementation
National Bureau of Machinery Industry
JB/T2257.2-1999
Type and Basic Parameters 3 is a revision. This standard is consistent with B266980 in that it is based on the technical content of JB2669-80 Sheet Metal Bending Machine, and has only been re-edited according to relevant regulations. The main differences are: the name of the standard has been changed to Sheet Metal Bending Machine Type and Basic Parameters, and the name of the number has been changed; the statutory unit has been adopted.
This standard was implemented in January 2000! This standard will be implemented from January 26, 1980. This standard will replace the National Forging Machinery Standardization Technical Committee and will be drafted by Shanghai Taoqian Machine Tool Factory. This standard was first issued in August 1980.
1 Scope
Machinery Industry Standard of the People's Republic of China
Sheet Metal Bending Machine
Type and Basic Data
This standard specifies the type and basic parameters of sheet metal bending machine: This standard applies to sheet metal bending machine:
Sheet metal bending machine is divided into the following three types of transmission types B) Type: Mechanical transmission (for nominal pressure less than or equal to KNi. See I) Type: Hydraulic transmission (for nominal pressure less than or equal to 1000V, hydraulic transmission (for nominal pressure less than or equal to 40V, see Figure Type 1
Approved by the State Machinery Industry Bureau on May 14, 1999/2257.-[994
2669-srl
2000--implementation
3 Main parameters and basic parameters
JR/T2357.2-1999
Figure 2 Type
Figure Type!
3.1 The main parameters of the plate folding machine are the nominal force and the size, see Table 1.3.2 The basic parameters of the plate folding machine shall comply with the provisions of Table 1, JB/T2257,7-1999
Batch heat transfer field
Mechanical transfer
Mechanical mass transfer
[AT2257.2-1999
Mechanical modification
Mechanical transmission
Mechanical transmission
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.