JB/T 9901.2-1999 This standard is a revision of ZB J51 003.2-88 "Technical requirements for manufacturing and acceptance of boring heads for vertical fine boring machines". During the revision, only editorial changes were made, and the main technical content remained unchanged. This standard is a supplement and specification of GB/T 9061-1998 "General Technical Requirements for Metal Cutting Machine Tools", JB/T 9872-1999 "General Technical Requirements for Mechanical Processing Parts of Metal Cutting Machine Tools", and JB/T 9874-1999 "General Technical Requirements for Assembly of Metal Cutting Machine Tools". 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 requirements and inspection methods for the manufacturing acceptance, geometric accuracy inspection and working accuracy inspection of vertical fine boring machine boring heads. This standard applies to general-purpose boring heads of ordinary vertical fine boring machines. This standard was first issued in June 1988. JB/T 9901.2-1999 Technical requirements for boring heads of vertical fine boring machines JB/T9901.2-1999 Standard download decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JB/T 9901,1~9901.2—1999
Vertical finishing boring machine
Published on 1999-05-20
Implemented on 2000-01-01
National Taoyuan Machinery Industry Week
[D/T9901.2—1999
This standard is revised on the basis of 2Bu15003.288 Technical requirements for manufacturing and acceptance of vertical finishing boring machine head. This standard is a supplement and transformation of 6B/T906-1988 General Technical Conditions for Cutting Machines, JB987-21999 Technical Conditions for the Assembly of Parts of Cutting Machine Tools, and JBT987-4999 Technical Conditions for the Assembly of Parts of Cutting Machine Tools. This standard is consistent with the technical content of 7RI.I51003.288, and has only been reorganized according to relevant regulations. This standard is part of the 9901 series of standards for vertical fine chain finishing. This series of standards includes: JDT9901.1-1999. 99 Vertical fine boring wood boring head parameters JB/T9901.2-999 Vertical fine boring machine boring head technical specifications and this standard field products:
JB/T4289.1-1999 Vertical boring machine accuracy JB-T4289.2-1999 Vertical fine boring machine technical conditions JH4289.3-1999 Vertical fine boring machine parameters H4289.41 Vertical fine boring machine series spectrum
This standard replaces ZBJ51003.2.88 from the date of implementation. This standard is proposed by the National Solid Cutting Machine Standard Technical Committee. This standard is drafted by the National Enterprise Cutting Machine Standard Technical Committee Drilling and Boring Machine Branch, and this standard is drafted by: Wuchao Heavy Machine Tool! This standard is effective from June 2019.
1 Scope
Machinery Industry Standard of the People's Republic of China
Technical Conditions for Vertical Fine Boring Machine Boring Heads
JB.T9901.2—1999
This standard specifies the requirements and inspection methods for the quality acceptance, geometric inspection and working degree inspection of vertical fine boring machine boring heads. This standard applies to ordinary vertical fine boring machine boring heads for teaching purposes. 2 Referenced standards
The following standards may contain clauses, which will become the clauses of this standard by being cited in this standard. When the standards are issued, the versions shown are valid. All standards will be revised. The parties using this standard shall be responsible for the possible use of the new versions of the following standards. GB/T82—1996
GBT1338492
GE/T 17421.1—1998
3Material and hardness of main parts
Shape and position specifications, specifications, symbols and drawings General technical conditions for packaging of electromechanical products
General rules for mechanical and electrical inspection Part 1: Geometry of mechanical properties under no load or processing conditions The material and hardness of main parts shall comply with the requirements of Table 1. Table
Part name
Magnesium fine shell
Butterfly shaft, shaft shell Appearance surface
Heat treatment shape
T23: New C48
Effective treatment
220-250 [[BS
Training quality 220-210H day 5
Tianjin fire is not faster than 45~50EIRC
17G.-240 TIBS
The surface of the shaft and the seam shaft must be smooth and smooth, without any protrusions or depressions specified in the drawing, and the material is flat and also independent. The matching sugar content of the working surface and the dimensional tolerance of the working table shall not be lower than the table? Regulations, Table 2
Tan Yue Township
Please draw the letter flange diameter D
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8.1 Install the bearing on the test machine and run it, with the reverse induction from low to high, and check the bearing temperature and temperature rise after running for 0.5: the bearing overflow is less than 65: the shaft is less than 35℃. The boring and pulling should rotate flexibly, and the shaft should not be too loose. The two questions G1 and G2 in Chapter 6 are related to the standard. The inspection should be carried out when the shaft reaches the medium speed and temperature. 8.3 The head must be tested. It can be sampled under stable production conditions. The number of inspections is only 5% of each case, and it shall not be Less than 3, and cut the test after the industry to carry out the chain head and the accuracy of the Ange and 1 work condition inspection, the precision of the bay should meet the standard requirements, the initial test case number table 3,
test effect name
spindle holy name text diameter
army parts front position
on parts control hole depth library
shark shaft rotation azole
feng cut degree
language parts with materials
packaging and marking
9.1 the head should comply with the relevant provisions of GB/Jiang 13384 when leaving the factory alone. Micro-common number
2-41 (10-15)
coupon, late degree 170-210 small BS
9.2 in the construction of the construction of the random parts of the current technical documents, that is, qualified book, installation list, instruction manual 93 blood installation effect! The name, model, size, quantity, weight, packaging and transportation diagram, manufacturer's name, etc. of the finished product.
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