JB/T 9901.1-1999 This standard is a revision of ZB J51 003.1-88 "Parameters of boring heads for vertical fine boring machines". During the revision, only editorial modifications were made and the main technical contents remained unchanged. This standard is part of the JB/T 9901 series of standards, which includes the following two parts: JB/T 9901.1-1999 Vertical fine boring machine boring head parameters JB/T 9901.2-1999 Vertical fine boring machine boring head technical conditions The standards supporting this series of standards are: JB/T 4289.1-1999 Vertical fine boring machine accuracy inspection JB/T 4289.2-1999 Vertical fine boring machine technical conditions JB/T 4289.3-1999 Vertical fine boring machine parameters JB/T 4289.4-1999 Vertical fine boring machine series This standard specifies the parameters of vertical fine boring machine boring heads. This standard is applicable to general-purpose boring heads of ordinary vertical fine boring machines. This standard was first issued in June 1988. JB/T 9901.1-1999 Vertical boring machine boring head parameters JB/T9901.1-1999 Standard download decompression password: www.bzxz.net

s 25.60.1
Machinery Industry Standard of the People's Republic of China
JB/T 9901,1~9901.2—1999
Vertical boring machine
Published on 1999-05-20
Implemented on 2000-01-01
National Taoyuan Machinery Industry Week
ID.T 9901.1—1999
Small standard is revised on the basis of 2B51003.1-88 "Type of bed staggered purchase", this standard is the technical serial number of 2BJ51003.1-85, only the relevant provisions are revised. This standard is part of the series of standards of B9901 "Multi-vertical fine bed warhead", the series of standards includes the following two parts: JB19901.1—1999 Type bed staggered parameters JB/T 9901.2-19
Vertical precision sewing bed inspection head technical conditions
The standards that match this standard are:
Vertical precision sewing bed upper degree
/428911999
JH part 42R9.2—1999. Compared with the precision sewing bed technical conditions 1 of 1289.7—1999 precision error bed quarter number
JD/T 4289.41999
Vertical fine boring machine series
This standard replaces 78J5103.1- from the date of implementation: Appendix A of the standard is a downgraded version of the standard
This standard is recommended by the National Technical Committee for Standardization of Cutting Machine Tools. This standard is not a standard. The National Technical Committee for Standardization of Metal Cutting Machine Tools is responsible for drafting: Kewei Heavy Machinery Factory. This standard was first issued in June 1988
People's Republic of China Machinery Industry Standard
Vertical fine boring machine
Boring head parameters
The standard specifies the relevant parameters. This standard applies to the general use of ordinary Wen type drinking rings. The parameters of the Wen type head are as shown in the figure. The parameters of the head shall comply with the provisions of the table: Figure 1 Wen type head type
National Machinery Industry Bureau 1999-05-20 approved JA/T9901.1-1999
4 7B J31 n03.[—
2000-01-01 Military
JD/T9901.1-1999
Ub-S91
2 11-18)
F11-91
001-92
JB.T9901.11999
Appendix A
(Specification)
Vertical special bed boring head model screening method
【This specification specifies the model screening method for vertical grain mill boring heads. The model screening method for vertical grain mill boring heads (for simplified testing) shall comply with the provisions of this appendix. The model screening method for the boring heads of various purposes may also be different from the provisions of this specification. 42 Model representation method
performance type is composed of wave Pei involved sound Ning letter and tensile teaching letter, and its representation method is as follows: [.T
improvement sequence number
second parameter, mm
personal parameter, mm
characteristic code
category code [production type fine boring head
1\" symbol is not indicated when there is no internal narrowness, and no book frame when there is internal consultation. 2 "" is an A number
the main number of the front head is expressed by 110 of its flange diameter, A 4 Second production parameter
The first main number of the head is expressed as 1/10 of the nominal diameter of the main shaft end. If the main shaft of the lithium head has a pin hole, it is expressed by the number of chain holes. 45 Characteristic code
When the head has other special features in addition to the general performance, the pinyin of the standard is used to represent the most important individual performance in a model. In a few special cases, two waiting can be represented.
46 Five major improvement sequence numbers
JB/T9901.1-1999
Commercial degree
I am the heart of the equipment bzxz.net
When the product is to be selected, the structure will be greatly improved, and the product must be renewed or retained and identified, the original model can be followed by the Chinese phonetic letters A, B, C... (the letter "" and "heart" are not allowed to use A7 boring head number examples
Bag head number examples:
a) The flange diameter is 250mm, the spindle head diameter is 110mm, and the general use pin head. Its model is LT25×11, b) The flange diameter is 200mm, the spindle head is 4V7:24 universal clock head, its model is TW20×40. ) The flange diameter is 320mm, the spindle head is 4 No. Mushiwei hole, and it is a centrally installed universal head, its model is LIw×32×4,
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