JB/T 8074.1-1999 This standard is equivalent to ISO 3089:1991 "Acceptance test specification for manual self-centering chucks for machine tools (geometric accuracy inspection)", and is a revision of JB/T 8074-95 "Precision of three-jaw self-centering chucks". The main differences between this standard and JB/T 8074-95 in technical content are: - The standard format is modified according to the GB/T 1 series standards; - The geometric accuracy indicators are different; - The imperial dimensions are added; - The size provisions of the inspection rod and ring are deleted. This standard is part of the JB/T 8074 "Self-centering chucks for machine tools" series of standards, which includes the following two parts: JB/T 8074.1-1999 Acceptance inspection specification for self-centering chucks for machine tools (geometric accuracy inspection) JB/T 8074.2-1999 Technical conditions for self-centering chucks for machine tools This standard specifies the geometric accuracy inspection of manual self-centering chucks for machine tools with more than two jaws (hereinafter referred to as chucks) and the corresponding tolerance values ​​of the two accuracy grades with reference to GB/T 17421.1-1998. This standard is applicable to the inspection of the installation, centering and rotation accuracy of the chuck, but not to other dynamic characteristics, such as the inspection of imbalance, balancing or the inspection of clamping force. The jaws of this type of chuck are usually hard jaws with a large stroke, and the clamping diameter can be quickly changed without disassembly. This standard was first issued in April 1960 as GC 49~50-60, revised for the first time in May 1979 as JB 2811-79, revised for the second time in April 1984 as GB 4347-84, and adjusted to JB/T 8074-95 in April 1996. JB/T 8074.1-1999 Acceptance test specification for manual self-centering chucks for machine tools (geometric accuracy inspection) JB/T8074.1-1999 Standard download decompression password: www.bzxz.net

[CS 35.060.20
Machinery Industry Standard of the People's Republic of China
JB/T8074.1-1999
eqvISo3089:1991(E)
Manual Self-Centering Chucks for Machine Tools
Acceptance Test Specification (Geometric Accuracy Inspection) 1999-05-20 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T8874.1-1999
This standard is based on the original ISO standard, and is based on ISO3089:1991 Acceptance Test Specification for Manual Self-Centering Chucks for Machine Tools (Geometric Accuracy Inspection Wheel) to revise the original BT8074-95 Self-Centering Chucks. This standard is equivalent to ISO3089 in terms of technical content. The main differences between this standard and GB 8074.-95 (formerly GB4347-84) are: different geometric accuracy indicators;
added imperial dimensions;
deleted the size provisions of the inspection ring.
This standard is part of the series of standards for dynamic self-centering chucks for machine tools. JB/T8074, under the general title of (dynamic self-centering chucks for machine tools), includes the following two parts: Part 1 (i.e. ID/T8074.1): Acceptance test specifications (geometric characteristics inspection: Part 2 (i.e. MT8074.2): Technical conditions. This standard shall replace JB T8074-95 from the date of implementation. This standard is issued by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of the Machine Tool Accessories Branch of the National Technical Committee for Standardization of Metal Cutting Machine Tools. The responsible drafting unit of this standard is: Yantai Machine Tool Accessories Research Institute. The main contributors to this standard are: Shen Zun, Liu Xia, Shi Shuqing. This standard was first issued in April 1960, first revised in May 1979, and second revised in April 1984. JB/T8074.-1999
ISO Pre-|| tt||S (International Organization for Standardization) is a federation of national standardization organizations (IS members) around the world. The work of formulating international standards is carried out through ISO's technical committees. Member countries interested in a basic topic established by a technical committee have the right to express their opinions in the technical committee. International organizations, official and non-official organizations related to [30] may also participate in this work. [30] cooperates closely with 1EC (International Electrotechnical Commission) on all issues of electrotechnical standards. The draft international standards accepted by the technical committees are sent to member countries for comments and then voted; the publication of international standards requires at least 75% of the members' votes.
International Standard ISO3089 was formulated by the SC8 Chuck Subcommittee of the ISO/TC39 Machine Tool Technical Committee. This edition replaces the first edition (15030 89:1974), and made technical improvements. 1 Standard
Machinery Industry Standard of the People's Republic of China
Manual Self-Centering Chucks for Machine Tools
Acceptance Test Specification (Geometric Accuracy Inspection) JB/T8074.1-1999
Announcement B, 8074-9
This standard refers to the standard B standard 1742.1 and specifies the inspection and acceptance of manual self-centering chucks for machine tools (hereinafter referred to as chucks) of two or more original sizes and the difference between the two corresponding accuracy grades. The full mark is applicable to the inspection and monitoring of the installation, centering and rotation of the chuck, but not to the inspection of other capital sealing, imbalance, etc.
The requirements of this type of chuck are usually reverse, and its operation is relatively smooth. It can be quickly changed without complaint. 2 Reference Standards ||tt| |The following are the remaining texts included in this standard, which are the provisions that become the standard in this standard. When this standard is revised, all versions are valid. All specifications are subject to revision. Parties using this standard should explore the possibility of using the following new versions. GB17431.11998 General rules for machine tool inspection Part 1: Pre-adjustment inspection of geometric accuracy of machine tools without load or precision machining
All geometric accuracy inspections are carried out by rotating the chuck. The chuck must be installed on the spindle end of the test auxiliary or the overturned disc. When inspecting, the upper end should first be inspected for dimensional accuracy, radial runout of the locating surface and end face runout, see support [4 Geometric accuracy inspection
4.1 Diameter and diameter test See Figure 1 and Table 2, 4.2: Diameter and surface runout test See Figure 1 and Table 2 4.3.3.2 Diameter and surface runout test See Figure 2 and Table 3. The external diameter of the ring must be checked according to the grid and Table 4. 4.5 The complete ring micro-surface check is shown in Figure 3 and Table 4. 4.6 The recommended internal ring dynamic test is shown in Figure 4 and Table 5, 4.7 The sample ring end surface dynamic test is shown in Figure 4 and Table 5. National Machinery Industry Week 19-05-2 To standard
2000-01-01 Real screen
When the card is installed, the white connector will be installed on the pumping and elimination part
The chuck will be installed on the irrigation plate of the main shaft sliding part. The diameter of the chuck
160250
250-400
400≤0630
630:01000
Card selection D
160k De:250Www.bzxZ.net
250 D e=40C
400kD≤630
6301000
10 D:15
JB.T8074.1-1999
a) The main shaft
end or passes
the performance disk
and the main shaft
both or pass
the disk surface
0.005:0.0002
41 or 4.2 item inspection
24 Ds36
at the minute, do not be stubborn
chase high!
Test method
Refer to the relevant provisions of 17421.1-1999
5.6.1.1.4: 5.6.1.2.2
Make the indicator test between the meter under test
1 level state zero point wheel
How many numbers are used in the test
G 0034
Test items
K salt skin diameter
JD/T 9074.1—1999
160250
25(k:400
400k0s630
630: [1s 1000
160
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