JB/T 7963.2-1997 Metal cutting band saw blades Part 2 Basic dimensions and tolerances

JB/T 7963.2-1997 JB/T 7963.2-1997 Metal cutting band saw blades Part 2 Basic dimensions and tolerances JB/T7963.2-1997 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T7963.1～7963.3-1997
Metal Cutting Band Saw Blades
Published on August 18, 1997
Ministry of Machinery Industry of the People's Republic of China
Implementation on January 1, 1998
JB/T 7963.21997
This standard is equivalent to ISO4875/11978 Metal Cutting Band Saw Blades Part 2: Basic Dimensions and Tolerances". Since the basic dimensions determined by ISO4875/1 represent the main characteristics of metal cutting band saw blades, the dimensions and tolerances given are basically suitable for domestic requirements, so they are equivalently adopted. And according to the needs of domestic and foreign markets and production development in recent years, the width dimensions of 27 and 34, the thickness dimension of 1, and the tooth pitch of 2.12 are supplemented.
According to the provisions of GB/T1.1~1993, the legal measurement units and codes promulgated by the state shall be used in the standard. Therefore, this standard only uses the metric dimensions and tolerances in 1SO4875/1, removes the imperial dimensions and tolerances, and retains the code for the number of teeth per inch in the Ding tooth deer in brackets.
JB/T7963, under the general title of "Metal Cutting Band Saw Blades", includes three parts: Part 1 (JB/T7963.1); Definitions and terms: Part 2 (JB/T7963.2): Basic dimensions and tolerances; Part 3 (JB/T7963.3): Types and characteristics. This standard is proposed and managed by the National Technical Committee for Tool Standardization. The main drafting units of this standard are Chaonan Machine Tool Factory and Benxi Tool Factory. The main drafters of this standard are Xu Ziwen, Zhang Jihua, Li Langui, and Deng Fang. From the date of entry into force, this standard will replace JB/T7963.2-1995 (Types, specifications and technical requirements for metal cutting band saw blades) (formerly GB6079.2-85) JB/T7963.2-1997 ISO (International Organization for Standardization) is a worldwide joint supervision of national standards associations (ISO member bodies). The formulation of international standards is generally carried out by ISO technical committees. Each member body has the right to participate in the committee if it is interested in a project for which a technical committee has been established. International organizations (governmental and non-governmental) that have liaison relations with ISO may also participate in this work. The draft international standards adopted by the technical committees are first sent to the member bodies for approval and then approved by the ISO Council as international standards. International standard ISO4875/1 was drafted by ISO/TC29 (Tools) Technical Committee and was sent to member bodies in August 1976.
This standard has been adopted by member bodies of the following countries: Australia
Belgium
Bulgaria
Czechoslovakia
Israel
Mexico
Philippines
Romania
Republic of South Africa
Turkey
Yugoslavia
Member bodies of the following countries have expressed technical disagreement with this document: West Germany
Machinery Industry Standard of the People's Republic of China
Metal Cutting Band Saw Blades
Part 2: Basic Dimensions and Tolerances
This standard specifies the basic dimensions and tolerances of metal cutting band saw blades (hereinafter referred to as band saw blades). JB/T 7963.21997
eqv ISO 4875/ I1978
For each type of band saw blade, various combinations of nominal size × tooth pitch are listed in B/T7963.3-1997, and various terms for metal cutting strips are specified in JB/T7963.11997. Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. JB/T 7963.11997
Metal cutting band saw blades Part 1: Definitions and nouns Metal cutting band saw blades
Part 3: Types and characteristics
JB/T7963.31997
Basic dimensions and tolerances
The width (see Table 1), thickness (see Table 2) and tooth pitch (see Table 3) of the band saw blade are selected from the priority number R40 series. Table 3 also lists the relationship between the tooth pitch and the number of teeth per 25 mm (1 in).
Width dimension
Width dimension
3.2 Thickness
Width dimension
± 0. 025
Approved by the Ministry of Machinery Industry on August 18, 1997
Band saw blade width and tolerance
Table 2 Band saw blade thickness and tolerance
Implementation on January 1, 1998
3.3 Tooth pitch
Number of teeth per 25 mm
(1 in)
Other tolerances
4.1 Tooth disc deviation
JB/T7963.21997www.bzxz.net
Band saw blade tooth pitch
The total number of teeth shall be determined by the manufacturer. The number of teeth on each side of the strip shall be equal, and the deviation shall be limited to ±0.05mm or the total number of teeth deviation shall be limited to ±0.10mm.
4.2 Straightness tolerance
Except for the teeth, the cross section of the band saw blade shall be straight (see Figure 1), and the straightness tolerance shall comply with the provisions of Table 4. Band saw blade cross section
Width dimension
Straightness tolerance
Straightness tolerance
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