JB/T 1828.1-1999 This standard is a revision of JB 1828.1-85 "Types and dimensions of blades for shearing machines". This standard specifies the types and basic parameters of blades for shearing machines. This standard applies to blades for shearing machines with a length of less than 4000mm for general use. This standard was first issued in December 1976 and revised in January 1985. This is the second revision. JB/T 1828.1-1999 Types and basic parameters of blades for shearing machines JB/T1828.1-1999 standard download decompression password: www.bzxz.net

ICS25.120.10
Machinery Industry Standard of the People's Republic of China
JB/T1828.1-1999
Blades for Shearing Machines
Published on 1999-05-14
Types and Basic Parameters
Implemented on 2000-01-01
National Bureau of Machinery Industry
JB/T18281—1999
This standard is a revision of JB1828.1—85 "Blades for Shearing Machines Types and Dimensions". The technical content of this standard is basically the same as that of JB1828.1—85, and it has only been re-edited according to relevant regulations. This standard shall be implemented from January 1, 2000
This standard shall replace JB1828.1—85 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Forging Machinery. The drafting unit of this standard: Shanghai Punching and Shearing Machine Tool Factory. The main drafters of this standard: Li Deming, etc. This standard was first issued in December 1976 and revised in January 1985. Scope
Machinery Industry Standard of the People's Republic of China
Blades for Shearing Machines
Types and Basic Parameters
This standard specifies the types and basic parameters of blades for shearing machines. JB/T1828.1-1999
Replaces JB1828.1-85
This standard applies to blades for shearing machines with a length of less than 4000mm for general use (hereinafter referred to as blades). 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. When this standard was published, the versions shown were all valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest version of the following standards JB/T1826-1991 Shearing machine types and basic parameters 3 Types
The blades are divided into the following four types:
a) Type I: four-edged blade with countersunk hole (see Figure 1); b) Type II: four-edged blade with screw hole (see Figure 2); ) Type IⅢI: two-edged blade with countersunk hole 80°≤β<90° (see Figure 3); d) Type IV: two-edged blade with screw hole 80°≤β<90 (see Figure 4). (H-FM
Figure 1 Type I
Approved by the State Machinery Industry Bureau on May 14, 1999 and implemented on January 1, 2000
JB/T1828.11999
Type I
Figure 3 Type IⅢI
Figure 4 Type IV
JB/T1828.1-1999
3.1 Type I and IⅢI blades are allowed to have empty grooves on both sides, and their dimensions are t/2xh/2 (double-dotted line 3.2 The through hole of type I and IIII blades is allowed to have a stop groove (see Figure 5), and its size should comply with the provisions of Table 1 Figure 5 Positive groove
3.3 When the blade length is greater than or equal to 2000mm, it is allowed to be manufactured in sections, and the length dimension l of the section should comply with the provisions of Table 1. 4 Basic parameters
The basic parameters of the blade should comply with the provisions of Table 1. Table 1
Shearable plate thicknessShearable plate width
102580
1025100
Shearable plate Thick shearable plate width
1025125
1025160
1025200
JB/T1828.1-1999
Table 1 (end)
Note: Those marked with * are parameters specified in JBT1826 and are recommended for priority. 5 Blade marking
5.1 Blade marking
Type I
Type Iwww.bzxz.net
Type III
Type IV
II -bxl
II-bxx×β
IV-bxlxβ
5.2 Marking of segmented blades
Type I
Type I
Type III
Type IV
If-bxle
IIf-bxl
IIf-bxl×β
IVf-bxlxβ
JB/T 1828.1—1999
JB/T 1828.1—1999
JB/T1828.1—1999
JB/T1828.1—1999
JB/T 1828.1—1999
JB/T1828.1—1999
JB/T1828.1—1999
JB/T1828.1—1999
Republic of China
Mechanical Industry Standard
Blade Type and Basic Parameters for Shearing Machine
JB/T182811999
Mechanical Standardization Research of the Ministry of Machinery Industry Published and distributed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2, Shouti South Road, Beijing: Postal Code 100044)*
Format 880×1230
Printing sheet 1/2
Word count 10000
First edition in September 1999
First printing in September 1999
Print run 1-500
Price 500 yuan
99-503
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.