JB/T 7966.7-1999 This standard is a revision of JB/T 7966.7-95 "Mold milling cutter flat straight shank tapered ball end mill". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. The original standard is not equivalent to the international standard ISO 3940-1977 "Straight shank tapered die milling cutter" type II. This standard is part of the JB/T 7966 "Mold Milling Cutter" series of standards, which includes the following 10 parts: JB/T 7966.1: Straight shank cylindrical ball nose end mill JB/T 7966.2: Flattened straight shank cylindrical ball nose end mill JB/T 7966.3: Morse taper shank cylindrical ball nose end mill JB/T 7966.4: Straight shank conical end mill JB/T 7966.5: Flattened straight shank conical end mill JB/T 7966.6: Straight shank conical ball nose end mill JB/T 7966.7: Flattened straight shank conical ball nose end mill JB/T 7966.8: Morse taper shank conical end mill JB/T 7966.9: Morse taper shank conical ball nose end mill JB/T 7966.10: Technical conditions This standard specifies the types and dimensions of flattened straight shank conical ball end mills. This standard applies to flattened straight shank conical ball end mills with a diameter of 6~12mm. This standard was first published in 1986 as GB 6336.7-86 and was adjusted to JB/T 7966.7-95 in April 1996. JB/T 7966.7-1999 Die milling cutters Part 7: Flattened straight shank conical ball end mills JB/T7966.7-1999 standard download decompression password: www.bzxz.net

ICS25.100.20
Machinery Industry Standard of the People's Republic of China
JB/T7966.1~7966.10-1999
Mold milling cutter
Published on May 20, 1999
National Bureau of Machinery Industry
Implemented on January 1, 2000
JB/T 7966.7—1999
This standard is a revision of JB/T7966.795 (original GB6336.7—86) "Mold milling cutter flattened straight shank mesh tapered ball head end mill". During the revision, only editorial changes were made according to relevant regulations, and the technical content remained unchanged. The original standard adopts the international standard ISO3940—1977 "Straight shank tapered die milling cutter" type II. This standard is part of the JB/T7966 series of standards for mold milling cutters, which includes the following 10 parts: JB/T 7966.1—1999
JB/T 7966.21999
JB/T 7966.31999
JB/T7966.4—1999
JB/T 7966.5--1999
JB/T 7966.6—1999
JB/T7966.7—1999
JB/T7966.8—1999
JB/T7966.9-1999bzxz.net
JB/T7966.10—1999
Mold milling cutters Part 1: Straight shank cylindrical ball end mills Mold milling cutters
Part 2: Flattened straight shank cylindrical ball end mills Mold milling cutters Part 3: Morse shank cylindrical ball end mills This standard replaces JB/T7966.795 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Tool Standardization. The responsible drafting units of this standard are: Chengdu Tool Research Institute and Changshu Measuring Tool Factory. 25
Mechanical Industry Standard of the People's Republic of China
Mold milling cutter
Part 7: Flattened straight shank conical ball nose end mill Range
This standard specifies the type and size of flattened straight shank conical ball nose mold milling cutter. This standard is applicable to flattened straight shank conical ball nose mold milling cutters with a diameter of 6~12mm. 2 Referenced standards
JB/T 7966.7—1999
Replaces JB/T7966.795
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 are subject to revision, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T6131.2-1996
JB/T7966.10—1999
3 Types and dimensions
Milling straight shanks Part 2: Types and dimensions for flattening straight shanks Die milling cutters
Part 10: Technical conditions
Types and dimensions are as shown in Figure 1 and Table 1.
Approved by the State Machinery Industry Bureau on May 20, 1999 26
Implemented on January 1, 2000
JB/T7966.71999
E10'0-
910'0-
E10'0-
Existing building
Basic size
9t0'0-
110'0-
Basic size
600'0-
Yanben size
Basic size
Existing building 5
Basic size
Yanben size
Basic size
Entire book size||tt ||Xinben Chishe
Basic angle
Banned size
Lotus size
Basic size
Limited delivery 0
Basic size
Waist lotus 6
Basic size
This size
Lian Di 6
Jiaben size
Limited Peng 6
Whole size
Deep lotus 6
Lotus Chishi
Limited Lane 6
Basic size
Gongben angle
Limited delivery service
Basic size
JB/T7966.7-1999
Marking example
JB/T 7966.7—1999
The marking of the flattened straight shank conical ball nose end mill (short type) with ball head diameter d=16mm and semi-cone angle α/2=3° is: Conical ball nose milling cutter 16-3° short JB/T7966.7—1999 The marking of the flattened straight shank conical ball nose end mill (standard type) with ball head diameter d=16mm and semi-cone angle α/2=3° is: Conical ball nose milling cutter 16-3° JB/T7966.7—1999 The marking of the flattened straight shank conical ball nose end mill (long type) with ball head diameter d-16mm and semi-cone angle α/2=3° is: Conical ball nose milling cutter 16-3° long JB/T7966.7--1999 Technical conditions
Technical conditions are in accordance with JB/T7966.10.
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