JB/T 7966.2-1999 This standard is a revision of JB/T 7966.2-95 "Mold milling cutter flat straight shank cylindrical ball nose end mill". During the revision, only editorial changes were made according to relevant regulations, and the technical content was not changed. The original standard non-equivalently adopts the standard series II group and long series II group in the international standard ISO 1641/1-1978 "End mills and keyway milling cutters Part 1: Straight shank milling cutters". 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 straight shank cylindrical ball end mills. This standard applies to flattened straight shank cylindrical ball end mills with a ball end diameter of 4 to 63 mm. This standard was first published in 1986 as GB 6336.2-86 and was adjusted to JB/T 7966.2-95 in April 1996. JB/T 7966.2-1999 Die milling cutters Part 2: Flattened straight shank cylindrical ball end mills JB/T7966.2-1999 standard download decompression password: www.bzxz.net

1CS25.100.20
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/T7966.21999
This standard is a revision of JB/T7966.2-95 (original GB6336.2-86) "Mold milling cutter flat straight shank cylindrical ball head end mill". During the revision, only editorial changes were made according to relevant regulations, and the technical content was not changed. The original standard non-equivalently adopted the standard series I group and long series I group in the international standard ISO1641/1-1978 "End mills and keyway milling cutters Part 1: Straight shank milling cutters".
This standard is part of the JB/T7966 "Mold Milling Cutter" series of standards, which includes the following 10 parts: JB/T 7966.1—1999
JB/T 7966.21999
JB/T7966.3—1999
JB/T7966.41999
JB/T 7966.5—1999
JB/T 7966.61999
JB/T 7966.7—1999
JB/T 7966.8—1999
JB/T 7966.9I999
JB/T7966.10—1999
Mold milling cutter
Part 1: Straight shank cylindrical ball end millsMold milling cutter
Mold milling cutter
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Part 2: Flattened straight shank cylindrical ball end mills Part 3: Morse taper shank cylindrical ball end mill Part 4: Straight shank conical end mill
Part 5: Flattened straight shank conical end mill Part 6: Straight shank conical ball end mill Part 7: Flattened straight shank conical ball end mill Part 8: Morse taper shank conical end mill Part 9: Morse taper shank conical ball end mill Die milling cutter Part 10: Technical conditions
This standard replaces JB/T7966.2-95 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: Chengdu Tool Research Institute, Changshu Measuring Tool and Cutting Tool Factory. Machinery Industry Standard of the People's Republic of China
Mold milling cutter
Part 2: Flattened straight shank cylindrical ball end mill Range
This standard specifies the types and dimensions of front flat straight shank cylindrical ball end mills. This standard applies to flattened straight shank cylindrical ball head mold milling cutters with ball head diameters of 4 to 63 mm. 2
Referenced standards
JB/T 7966.2—1999
Replaces JB/T7966.2—95
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. GB/T 6131.21996
JB/T 7966.10—1999
Types and dimensions
Milling cutters with straight shanks Part 2: Types and dimensions of flattened straight shanks Mold milling cutters Part 10: Technical conditions
Types and dimensions are as shown in Figure 1 and Table 1.
Ball R-d2
Approved by the State Bureau of Machinery Industry on May 20, 1999, and implemented on January 1, 2000
Standard type
JB/T7966.2—1999
Standard type
1The shank of the milling cutter with d≤6mm is allowed to be made into an inverted center. 2The milling cutter is allowed to be made without a neck.
3 Shank size and deviation shall comply with GB/T6131.2. 4 Marking example
200~35°
g~13°
The marking of the flattened straight shank cylindrical ball nose end mill (standard type) with a ball head diameter of d-16mm is: Ball nose milling cutter 16JB/T7966.2—1999
The marking of the flattened straight shank cylindrical ball nose end mill (long type) with a ball head diameter of d-16mm is: Ball nose milling cutter 16 longJB/T7966.2—19995 Technical conditions
The technical conditions shall comply with JB/T7966.10.
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