JB/T 9390-2002 Technical requirements for horizontal hard bearing balancing machines
Some standard content:
1 Scope 2 Normative references 3 Terms and symbols 3.1 Terms and definitions 3.2 Symbols 4 Balancing machine specifications 5 Technical requirements 5.1 Environment and working conditions 5.2 Installation requirements 5.3 Main performance Graphic symbols for balancing machines Transport inductance Energy resistance Safety and electrical characteristics 5.7 Other requirements Inspection method Inspection conditions Inspection equipment Verification of balance Balance test method Test quality tt||Test of minimum achievable residual calorie balance
Test of unbalance to reduce costs
Test of resistance to transport vibration
Test of machine safety and airtightness.
6.10 Other requirements
Test rules
Test
Type test.
7.3 Judgment rules
8 Marking, packaging, transportation and storage
8.1 Marking
82 Packaging
8.3 Transportation
8.4 Storage
Appendix A (Data Appendix) RR test of rotor for external center of mass verificationTest conditions
A.2 Test equipment.
JR/T 93902002
JB/T 9390--2002
A.3 External center of mass check rotor
Test mass calculation example
A.5 URR test procedure for external center of mass check rotor Appendix B (Informative) VRR test evaluation diagram Basic data of allowable pressure circle "Test evaluation diagram.
Figure 2 Allowable to misalignment relationship diagram
3 RR low test evaluation diagram
Figure 4 URR resistance test evaluation diagram
Figure A.1 Typical connection of external center of mass check rotor Table 1 Symbols
Table? Specified values of balance and R
Table 3 Check rotor balance record table..
4 Minimum motor residual unbalance "Test record table S Unbalanced RR low order test record table Unbalance table often reduces URR high-order test record table..1
JB/T9390—2002
This standard is a revision of ZBN73001-198 horizontal hard bearing balancing machine. For the inspection method of the main performance of the balancing machine, the national standard 1S2953:1985 "Description and evaluation of balancing machines" is equivalently adopted, and the technical and definitions specified in the international standard ISO1925:1990 "Inquiry into mechanical vibration balance" are directly used, and the symbols specified in the international standard ISO3719:194 "Graphical symbols for mechanical vibration balancing machines and their instruments" are used.
When revising, this standard has been reorganized to the structure of the original standard, the technical content has been greatly modified, and the entire standard has been systematically modified. This standard has some changes from 7BN73001-1988 in the following major technical contents: Deleted the original Chapter 3 (Composition of balancing machine) and Chapter 7 (Completeness of balancing machine, machine documents and enterprise guarantee); Except for the provisions of 4.5 and 5.9 on the noise of balancing machine and its inspection method (this content has been stipulated by the mandatory industry standard BB98199 General Technical Regulations for Safety of Flat Angle Machines), except for the provisions of Figure 2 in the original standard for the shape, size and speed of the rotor to be inspected, Table 3 is revised: The provisions of chapters such as "Cold Inspection Rules" (see Chapter 7) and "Marking, Packaging, Transportation and Storage" (see Chapter 8) are newly classified into Chapter 3 (Technical Definitions and Symbols) and Chapter 4 (Basic Specifications of Balancing Machines); The original Professional Standard of the People's Republic of China 7RN7001:19 is abolished at the same time. This standard is proposed by the China Machinery Industry Federation. This standard is issued by the National Standard Supervision Committee. This standard The unit of the standard: Changquan Testing Machine Research Institute. The parties to this standard: 1 Haibk Testing Machine Co., Ltd., Shanghai Zhonglian Testing Machine Factory, Susheng Songlin International Instrument Co., Ltd., Xinggan Testing and Inspection Equipment Factory, Shanghai Songyun National Standard Planning Instrument Co., Ltd. The main authors of this standard: Xue, etc., Zi Zuo, Zhou Mingdao, Hun Xiuyun, Zhang Shimin, Wang Xionghua This standard was first issued in August 1988 as ZBN73001-1988, and this is the second revision. 1 Scope
Technical conditions for horizontal hard bearing balancing machines
JB/T9390—2002
This standard specifies the terms, definitions and symbols, specifications, technical requirements, inspection methods, inspection tests, marking, packaging, transportation and storage of horizontal hard bearing balancing machines. This standard applies to horizontal hard bearing balancing machines (hereinafter referred to as horizontal hard bearing balancing machines). 2 Normative references
The following documents are used in conjunction with this standard. The referenced documents of this standard shall become the clauses of this standard. For dated referenced documents, their subsequent amendments (excluding the content of the production mark) shall not be applicable to this standard. However, the parties who reach an agreement based on this standard shall be encouraged to study whether the updated versions of these documents can be used. For documents without a date, the latest version shall apply to this standard. GB/T26111 Technical requirements for quality inspection machines
GB/T4201-1984 horizontal flat vehicles Machine calibration method GB/T6144 Machine-based vibration balance terminology (6B6444-[995, eqVISO1925:1990) GB/T9238 Semi-balanced instruments only use graphic symbols (GB/T938--1998, ISO3719:1994) JB/T6147-11 Test machine packaging, packaging marking, storage and transportation technical requirements JB8898 General technical conditions for balance specialties
3 Terms and definitions and symbols | |tt||3.1 Terms and definitions
GBT444 Terms and definitions apply to this standard 3.2 Symbols
For the purposes of this standard, see the table below for the units and descriptions. Table 1 Symbols
4 Basic balancing machine parameters
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Minimum residual unbalance of the balancing machine Minimum residual unbalance
The minimum residual unbalance that can be achieved and the unbalance amount per test plane The smallest achievable surplus unbalance degree
unbalance reduction
self-determined test energy
the unbalanced mass flow number of the point among the 12 points (or 8 points) on the test disk
every 12 points (or 8 points) reading is 4, the calculation of the three average values is not required, and the three plus three 1/e of the test balance mass is the corresponding reading value. The manufacturer shall give the following basic parameters in the relevant technical documents of the balancing machine: 1. Balancing machine range:
JA/T 9380-2002
b. Maximum mass of the rotor to be balanced:
c. Maximum diameter of the rotor.
5 Technical requirements
5.1 Environment and working conditions
The balancing machine should work normally under the following conditions: a) Room temperature is within 10℃~35℃; b) Relative humidity does not exceed 85%;
|) The voltage of the power supply of the test part does not exceed ±10% of the rated voltage; d) Use non-permeable medium.
52 Installation requirements
a) The installation temperature is within (.211000); b) When installing the balancing machine, other factors such as external vibration and electromagnetic radiation should be considered and relevant measures should be taken: The cables, brackets and pipe joints used for installation and connection should meet the requirements of rated values (annual voltage, current, pressure, etc.); The manufacturer should give the overall size and quality of the balancing machine and the type (such as leakage rate, workbench, etc.) and dimensions of the balancing machine to ensure the specified performance of the balancing machine.
5.3 Main performance
The minimum achievable residual unbalance degree and unbalance reduction factor of the balancing machine shall comply with the provisions of Table 2. Table 2 Specified values of balancing machine and URR
Maximum rotor mass k
5.4 Graphic symbols for balancing machine
Transmission mode
Universal joint ...6 Mechanical safety and electrical safety
The mechanical safety and electrical safety requirements of the balancing machine shall comply with the provisions of B898. 57 Other requirements
The basic requirements, tooling and external quality of the balancing machine shall comply with the relevant provisions of Sections 3, 4 and 6 of 2001-1992. 6 Inspection methods
6.1 Inspection parts
The balancing machine shall be inspected under the environment and working conditions specified in 5.1. 6.2 Inspection tools
The instruments and measuring tools used for inspection include: 1) Tachometer (or measuring instrument); 2) A large instrument with sufficient weighing capacity and an accuracy of 1000: c) Level; 3) General inspection equipment and inspection tools.
6.3 Inspection and testing of the product
JB/I9390-2D02
6.3.1 The material, shape, quality and size of the product shall conform to the requirements of G13/T4201-1984 Section 2 and Figure 1 and Table 1 of the nuclear standard.
6.32 Principles for selecting the quality of the calibration rotor:
Select a calibration rotor with a mass less than ten-third to one-third of the maximum rotor mass allowed to be balanced by the balancing machine from the calibration rotor specified in 6.3.1 for various tests.
When the mass of the calibration rotor required by the balancing machine is greater than 0.5kg, the manufacturer and the user shall negotiate to determine the calibration rotor. 6.4 Balancing speed
When testing the balancing machine products and their own RR, the selected balancing speed is the minimum speed set by the manufacturer for the calibration mass and the speed agreed upon by the manufacturer and the user. The maximum speed set by the manufacturer for the heaviest rotor can be used. 6.5 Test weight
The test mass shall be made of bolts, screws, rubber, etc., and its center of mass shall be located before the test. The quality accuracy requirements, installation position requirements and calculation of the test quality shall comply with 3.2, 3.3 and 3.4 of G14201-1984.
6.6 Test for the minimum achievable residual unbalance m 6.6.1 After the calibration rotor has been fully adjusted and balanced, the calibration rotor shall be balanced to a residual unbalance of no less than 5.c6.6.2 On two non-test planes of the calibration rotor, add an unbalance amount equivalent to 10% to 20 times the unbalanced amount on the test plane. The two unbalanced positions shall be kept in different phases or inversely proportional. 6.6.3 According to the procedure specified by the semi-balancer, make no more than 4 changes to the calibration mass on the left and right test platforms (avoid "N") based on the readings (on-site calibration mass is allowed). The position and size of the calibration mass applied each time shall be recorded in detail in the specified columns of Table 3. In order to check whether the calibration mass has flown out or fallen off, 6.6.4 For the semi-balancer with force steering joint, turn the steering joint for verification by 60" or 90", and ignore the first reading. It is allowed to verify the rotation and make adjustments to the connection parts of the universal joint. 6.6.5 Use two 10 test quantities to add them to the "0" holes at the ends in phase respectively: and at 0", 3:, 090\. 120\, 150″, 180°, 210, 24D”, 270°, 30°, 330°, 12 positions (or 0°, 45°, 90°, 135°, 180". 225°, 270°, 315°, 8 positions), in any order, increase the two test quantities until they are simultaneously and in phase with each other: carry out the test, and select the program. Only one test is allowed for each start. The test data of 12 positions (or 8 positions) are specified in Table 4.
8.6.6 Draw the output diagram in 1 according to the number A at 12 points (or 8 points). 6.6.7 The difference in the balance value A of A is calculated by formula (1) 4
Where:
=12 (8)
6.6.8 All readings of A should satisfy the following two formulas at the same time, such as e. The test method is qualified 94%,%.A11Ab
0.8RAA,1.12A
JB/I93802002
If the reading changes (or changes or moves), the maximum and minimum values should be recorded, and the store meets the following conditions, U.BBAA-.1.12A
, the formula is based on the arithmetic value of the maximum and minimum values A recorded, that is, A=1/2 (A+A) Table 3 Rotor balance measurement record table
Running point
Rotor quality
Test plane
: Initial unevenness:
(Ultra unevenness:
Special 0" or 90
Year
Test weak quality display
10--20;
Huaheng model
Street Kaiyi
De resistance:
Effective radius
x or pants:
Accurate speed
(10--20:
(or screen>
Balancing machine without universal parts will test the universal joint lightly rotate the wisdom practical image after the first Xinping exploration rotten operation station:
Reader:
Recorder:
Errmin
Test location:
Rotor activity
Effective radius
Test level
Year Month
Test quality diagram
12 proofs
8 to 12
AnA-T:A,
Table 4 Minimum achievable residual unbalance emsr Test record room
Weighing machine model:
Balancing machine number:
Balancing sail's e hundred,
g(or format)
2(live)
8! Happy format)
District (or consultation)
Monitor
Test (0e)
JB/T9390
Position A:
Recorder
e(recommended)
(or tour)
8《or format》
s《Book!
*1I format】
JB/T 9390—2002
Test micro-position
1R position:
, indicating the commercial benefit to the single book some steam data to find the evaluation diagram of the Cmar test
6.7 Unbalance reduction rate R test cavity
B.7.1 Before the test, check the rotor balance to the remaining unbalanced measurement less than [/6.7.2 Prepare two groups of test pages
The first group: 5Um for the test quality of the smaller 2 : 25Lp mobile test mass 2
Group 1: 25 weekly test mass 2
1250 mobile test mass 2, 2.
6.7.3 Use the specified polar paper to draw the test results, take the root coordinate origin as the drawing origin, and consider the place 5U (or 25) above the drawing origin as the allowable break origin:
6.7.4, take the two allowable origins as the center of the circle, and use 25, or 1250 yuan) to draw the diameter chart. The intersection of the country and the extreme negative (starting point of thickness is the vertex) is equal to 0°30°0”90120°, [50″, 180″210″240%270°: 300°33012 radial lines (or 8 series lines with a spacing of 45") is the center of the allowable circle 6.7.5 At the center of each allowable circle, take , as the radius. The radius of the allowable circle is calculated according to the common or (2):
-RI--RR)+1-
The distance R from the origin to the new track center is calculated using formula (3) R=,\ +a*-(2ac ck )
The angle thickness between the fixed test amount and the synthetic amount is calculated according to formula (4): COSY =g'+Ri-22
Draw the new allowable inverted loss relationship diagram shown in Figure 2. This diagram is caused by
Draw + total point
Fixed test mass:
Mobile mass
Wuzhou District Center
JB/T9390-2D02
Li (uneven new indication size: the total amount of sugarcane: its size is equal to the distance from the origin of the drawing to the allowable measuring center: the allowable surface radius is not shown in the country::
The variable angle R between the intersection of the fixed test mass and the rhythmic test mass and the filling angle between them
The long dimensions (a.,,) are all effective, the country 2 allowable circular vector relationship diagram
6.7.6 Let the inspection procedure 6.7.6.1 Select one of the 12 (or 8) "N" holes on the left and right test planes as the position of the fixed test mass. The positions of the two fixed test masses on the left and right test planes must not be in phase or opposite. 6.7.6.2 Select any one of the 12 (or 8) "N" holes on the left and right test planes as the starting position of the mobile test mass. 6.7.6.3 Increase the mobile test mass on the left test plane by 30" (or 45") each time, and reduce the mobile test mass on the right test plane by 30" (or 45") each time. The fixed test mass can be skipped. 6.7.6.4 Add 7.6.1~6.7.6.3 The test mass position of the test procedure and the readings of the modified (or increased) test are recorded in Table 5: or Table 6, and the readings are plotted in the corresponding allowable circle of the polar coordinate diagram 3 (or Figure 4) drawn according to 6.7.3~6.7.5. If all the readings in 6.7.6.56.7.6.4 fall within the corresponding allowable range, the URR test is considered to be acceptable. If one reading is not within the allowable range, the test of the group (5pp and 25Up or 25U and 125U) shall be repeated. All readings after the test shall fall within the allowable range. If any reading is not within the allowable range, the machine may be adjusted and the test shall be repeated once under the same conditions.
6.8 Inspection of transportation resistance to corrosion
The transportation resistance of the balancing machine can be inspected by one of the following two methods: a) Mount the package of the balancing machine on the collision table in normal transportation state, and carry out collision test with a pulse shape similar to a semi-sine wave. The severity level used in the test is as follows: JB/T9390--2002
Test location,
One cycle speed
Table 5 Unbalance reduction rate UR Monthly low-level test record table
Balance machine and
Box machine editor:
R value of the balance:
Fixed test location (5p))
Fixed test time position
I or test position!
Liemin Institute
Card wind:
Effective radius
Mobile test quality inspection and calibration
9|Power transmission test quality display (2p)
Monitor:
Decrease to Ur
The most urgent
Double or gear)
R (or alternate)
Recorder:
Or conclusion:
Divide by U
With or hold
Test location:
Rotor Gear
North Street Speed
Year Factory
Hao6 Unevenness Reduction Rate URR High-level Test Record Table Weight
Balancing Machine Model:
Balancing Machine Serial Number:
RR Value of Balancing Machine
Fixed Test Data (25/)
Test Center
Same as the Fixed Inspection Product Stop Position ()
Mobile Test Quality Position)
Operator:
1 (left)
· rurakg
Effective radius
Grade dynamic test mass calibration
Mobile test mass (125V/g)
Monitor the value of the wind
g grid)
TB/T93902002
2 (or grid)
gr or grid)
Recording station:
Confirm with 10
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