JB/T 3770-2000 Floor Grinder

JB/T 3770-2000 This standard is a revision of JB/T 3770-84 "Floor-type Grinding Machine". JIS C 9621-76 (confirmed in 1985) was referenced during the revision. The differences from the original standard are: technical indicators have been adjusted according to relevant standards; safety requirements, test methods, starting requirements and electrical clearance creepage distance requirements have been added. This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging and storage requirements of floor-type grinding machines. This standard is applicable to floor-type grinding machines and dust-exhausting grinding machines with a maximum grinding wheel diameter of 200~600mm. This standard was first issued in September 1984. JB/T 3770-2000 Floor-type Grinding Machine JB/T3770-2000 Standard download decompression password: www.bzxz.net

tCS25.080.50
Machinery Industry Standard of the People's Republic of China
B/3770—2000
Floor-type grinding machine
Pedestalrindcrs
2000-04-17 Issued
National Bureau of Machinery Industry
2000-09-01 Implementation
J3/T 377—2000
This standard is a revision of JB3770—84 floor-type grinding machine, and it is based on the Japanese industry standard J1SC9621-76 [85 confirmed]. The main differences between this standard and JB3770.-84 are: the explosion rating of the grinding machine is changed from the provisions of the basic technical requirements of the Japanese/T755-[98 motor to the short-time delay rating S2-10m In the vibration requirements of the grinding wheel machine, in order to be consistent with the relevant standards, the following are added to measure the vibration continuity: the safety requirements of the grinding wheel are added; the starting requirements and the requirements for the distance between the electrical parts are added; the requirements for the test method are added, and the requirements for the J02 series motors are removed. Other technical contents are basically consistent with JB3770-84. This standard replaces JD3770-84 from the date of implementation. The standard is proposed by the National Technical Committee for Standardization of Cutting Machine Tools. This standard is under the jurisdiction of the Grinding Machine Branch of the National Technical Committee for Standardization of Cutting Machine Tools. The responsible unit for the development of this standard is: Shanghai Grinding Wheel Machine Research Institute. The main drafters of this standard are: Fan Xiangjie, Wu Yaoping, and Wang Cheng. This standard was first issued in September 19B4.
Machinery Industry Standard of the People's Republic of China
Pedestal Grinders
IRT3770—2000
Standard 3770-84
This standard defines the classification, technical requirements, or force test method, inspection rules, marking, installation and storage requirements of pedestal grinders. This standard is applicable to pedestal grinders and dust removal grinders with a diameter of 200-600m (hereinafter referred to as pedestal grinders). 2 Referenced Standards
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. All parties using this standard shall discuss the continuity of the latest versions of the following standards. GR 191-[990.
G—18
GA-T 1497-.1985
GA 24941995
GB28941996
SBrT 5326.1—E996
GB.T 9061-.19BB
GB10068.1-1988
G/[13306-1991
GB/13384—1992
GBI17421.[—1998
JB87991908
3 Classification
3.1 Series of grinding machines
Packaging, storage and transportation signs
Basic technical requirements for inter convex machines
Low H electrical basic vehicle standards
Abrasive tool safety rules
Safety signs
T display machine micro-electrical equipment Part: Technical conditions for the use of metal cutting machine tools General technical conditions for the whole parts
Measurement and limit values ​​of vibration of rotating motors
Vibration measurement method
Packaging of electromechanical products
General technical conditions
Machine tool inspection and purchase Part 1: Precision of machine tools under no load or finishing conditions Grinding wheel machine case Technical conditions for full protection
Series composition of grinding wheel machines See the figure,
Self-type
Grinding wheel machine
Weak type
National Machinery Industry Week 2000-4-17 Approved
Series composition of grinding wheel machines
2000-09-+1 Implementation
3.1.1 Weak-type grinding machine
The weak-type grinding machine is the basic series, which is assembled with a motor with a grinding wheel directly installed on the ground and a floor base (see Figure 2). It is suitable for general industrial and mining enterprises and machinery manufacturing industries to grind parts, remove hair, clean chain parts and grind cutting tools. 3.1. 2 Self-driven grinding wheel machine
Self-driven grinding wheel machine is the basic series. It uses a motor and is used for ground installation through a belt-driven grinding wheel shaft (see Figure 3). It is suitable for general industrial and mining enterprises and heavy machinery belt industries to grind parts, remove hair, clean chain parts and grind cutting tools. 3.1.3 Dust removal grinding wheel machine
The dust removal grinding wheel machine is equipped with a floor-standing dust removal box on the base grinding wheel machine. The dust removal box is equipped with a dust collector. Self-driven grinding wheel machine
Gentle grinding wheel machine
3.1.4 Multi-function grinding wheel machine
JB/T37T0-2000
The multi-function machine has a special feature of grinding wheel removal and is multifunctional! 3.2 Parameters of grinding wheel machine
The vertical parameters of grinding wheel machine shall comply with the requirements in the table. [
Maximum true diameter of grinding wheel
Grinding energy
Grinding wheel diameter
New core power
Same speed standard
Predetermined voltage
Frequency setting software half H>
1! The new setting item refers to the frequency setting power requirement bzxz.net
2! This frequency setting is the frequency setting of the automatic turbine machine 4 Technical requirements
4.1—Requirements
4.1 .! Turbine operation system
Turbine parameters
The short-time control specified in CB155 is used as S21. The reverse running time under the rated power is 0min. 4.1.2 Deviation of source pressure
When the source output fluctuates within the rated value within the specified range, the turbine can be used normally. 4.1.3 When the bearing
The grinding wheel is running at no load, the shaft should be smooth and smooth without obstruction. 4.1.4 The noise of the grinding wheel should meet the requirements of JR No. 7491998. 4. 1. 5b The dynamic test of the grinding machine should be carried out under no-load conditions, and the dynamic speed is 1.5mm. 54.1.6 The radial runout of the grinding wheel machine mounting shaft should not exceed the requirements of Table 2. Table 2 The radial runout of the grinding wheel mounting shaft Maximum grinding wheel diameter Hot running 4.1.7 Dust concentration JB/T3770--2000 Dust concentration should comply with JB8799-1998 4.5, 4.1.8 External specifications
The external quality of the grinding machine generally complies with the provisions of GH/9061--19885.1: 5.2, 5.3, 5.4, 5.6, 5.8 4.2 Full protection of the grinding wheel
4.2.5 Grinding wheel protection
The requirements for the protection of the grinding wheel should comply with the provisions of 421 in JB8799-1998. 4.2.2 Safety requirements for the lower bracket
The safety of the lower bracket should comply with the provisions of 4.2.2 in B8799-199%. 4.2.3 The installation method of the grinding wheel and the material and size of the grinding wheel chuck The installation method of the small grinding wheel shall comply with the provisions of 14.2.3a) of JB8799-1998. b) The material and diameter of the thin shaft of the European wheel case shall comply with the provisions of 4.2.31) of B8799[998]. c) The material of the grinding wheel chuck shall be in accordance with the provisions of 4.2.3b) of J8799-1998. It shall be 023 with a tensile strength of 375460N/mm* or gray iron with a tensile strength of not less than 200N/mm or with a strength that can be fully sized. The size of the grinding wheel chuck shall meet the requirements of 4.2.3) of JD8799-1998. d) The wheel pad shall meet the requirements of 4.2.3) of JB8799-1998. 4.2.4 Safety requirements for grinding wheels
The safety line of the selected grinding wheel shall meet the requirements of GD2494. Table 3 Safety line of grinding wheel
Quantity Large point diameter m
Grinding wheel method·Linear speed m's
34 (50) 1
1 When the grinding wheel machine rotates at a speed of 3000rmin, the grinding wheel is fully loaded and reversed for 30s. 4.2.5 The direction of wheel rotation
The direction of wheel rotation should be marked on the left side of the grinding machine. 4.2.6 Anti-loosening device
Parts that may come loose during the operation of the grinding machine must be equipped with anti-loosening devices. The direction of the wheel shaft end must be opposite to the direction of wheel rotation.
4.3 Requirements for electrical performance
The motor performance of the self-inductive sand excavator shall comply with the provisions of the relevant motor standards: the motor parts of the self-inductive sand excavator shall meet the following regulations.
4.3.1 Starting requirements
At the rated frequency, apply 90% of the rated voltage, and it should be able to start normally when no-load. 4.3.2 Temperature rise and temperature
The rated voltage of the rated frequency is added to the sand excavator, and it runs at the rated power for 30 minutes. Check the leakage rise and temperature of the sand excavator, and check the temperature rise and temperature bottom values ​​of each part of the insulation grade, which should not exceed the provisions of the test table 4. The insulation department has determined the lifting limit of the system! Electrical method! K
J/T3770—2000
Table 4 Grinding machine overflow and temperature
and related safety knowledge (knowledge segment! K deletion tolerance (group meter method)
4.3.3 Insulation resistance
The requirements for insulation resistance shall comply with the provisions of 4.3.2 in B8799--1998 4. 3. 4 The requirements for withstand voltage shall comply with the provisions of 4.3.3 of B8799-1998. 4.3.5 The requirements for protective earthing shall comply with the provisions of 4.3.4 of 8799-1998. 4.3.6 The requirements for live parts shall comply with the provisions of 4.3.5 of JB8799-1998. 4.3.7 The requirements for electrical clearance and distance between live parts and creepage distance shall comply with the provisions of 4.3.6 of 8799-1998. 4. 3. The requirements for pressure loss protection
The requirements for pressure loss protection should comply with the provisions of 4.1.7 in 1D8799-1998. 4.3.9 Switch performance requirements
The basic performance of the switch should comply with the provisions of GB.T149?. 4.3.10 Wiring requirements
The wiring requirements should comply with 4.3.8 in 8799-1998. 4.5.1 Power connection
The power supply of the grinder should generally be connected to the device. The box should have a yellow background, a square shape with a lightning symbol, and the shape of the symbol should comply with the provisions of 2894. 5 Test method
5. 1 The vibration test method is in accordance with B/T10068.1. The maximum vibration value measured by the three measuring points on the left, middle and right of the upper part of the excavator housing is the measured vibration value.
5.2 The inspection method of the wheel shaft is in accordance with the provisions of R1721.1. During the measurement, the indicator is set, and the probe is 5m away from the bottom of the excavator shaft, vertically touching the surface, and slowly rotating the wheel shaft. The maximum value of the indicator reading is the diameter runout:
5.3 The noise measurement method shall comply with the provisions of 4.4 in [B/T799-1998, and the dust measurement method shall comply with the provisions of 4.5 in [B/T799-199B. 5. 5. The temperature rise test shall comply with the provisions of 4.3.[ in DB7991998 5.6 The continuous electric test shall comply with the provisions of JB8799.1998-43.2 5.? The no-hazard test shall comply with the provisions of 4.3.3 in JB8799-1998 Test Rules
【Factory Acceptance Test
JB/T3770-2000
6.1.1 For the products in normal production, the factory acceptance test shall be carried out. Each grinding wheel machine can only leave the factory after passing the inspection, and it shall be accompanied by a product certificate.
6. 1.2 The acceptance inspection is to be conducted on 4.3.3, 4.1.4, 4.1.5, 4.1.8, 4.2.6, 4.3.1, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.8, 7.3, etc.
6.2 Spot check test
6.2.1 Spot check test is to be conducted under the following conditions:
After the model is finalized, the manufacturer conducts the first trial production or small batch trial production: b) When the design or process changes of the grinding wheel machine are sufficient to cause changes in certain characteristics and data: ) When the acceptance test results and the previous spot check test results show an unacceptable deviation. 6.1.3 Rules for Sampling Samples
Only one unit of the annual production batch can be inspected: if there are unqualified items, ten more units can be inspected. If there are still unqualified items, the batch of products will be judged as unqualified.
Marking, packaging and storage
7.1 Marking
Fix the label on the obvious part of the grinding wheel machine. The label shall comply with the provisions of GB13306. 7. 2 Label
The label shall indicate the following contents
Manufacturer specification:
6) Product model and name:
Selected grinding wheel safety wire distance
d) Rated power
) Rated frequency;
F) Rated current:
) Rated speed:
b) Insulation grade;
j) Year of manufacture and production number;
k1 T push.
7.3 Packaging
Product packaging shall comply with the provisions of GB13304, and it is allowed to be packed in a lattice box. 7.4 The following contents shall be marked on the outside of the box: 6) Manufacturer name:
Product model and name:
Product standard code:
d) Net weight and gross weight:
e) Dimensions of the box;
↑ Storage and transportation mark.
FB/T 377C-2000
Note: The storage and transportation mark shall include "Caution", "Afraid of moisture", "Time", etc., and its shape shall comply with the provisions of GB191. 5) The technical documents accompanying each product shall include: a) Certificate of conformity; b) Instruction manual; c) Packing list; 7.6 Storage
The grinding wheel machine shall be kept in a warehouse free of corrosive gas and explosion.5. The temperature rise test shall comply with the provisions of 4.3.[ in DB7991998 5.6 The continuous electric test shall comply with the provisions of JB8799.1998-43.2 5.? The no-hazard test shall comply with the provisions of 4.3.3 in JB8799-1998 Test Rules
【Factory Acceptance Test
JB/T3770-2000
6.1.1 For the products in normal production, the factory acceptance test shall be carried out. Each grinding wheel machine can be shipped only after passing the inspection, and it shall be provided with a product certificate.
6.1.2 The acceptance inspection shall be conducted on 4.3.3, 4.1.4, 4.1.5, 4.1.8, 4.2.6, 4.3.1, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.8, 7.3, etc.
6.2 Spot check test
6.2.1 Spot check test shall be conducted under the following conditions:
After the finalization of the model, the manufacturer conducts the first trial production or small batch trial production: b) When the design or process changes of the grinding wheel machine are sufficient to cause changes in certain characteristics and parameters: ) When the acceptance test results and the previous spot check test results show an unacceptable deviation. 6.1.3 Rules for Sampling Samples
Only one unit of the annual production batch can be inspected: if there are unqualified items, ten more units can be inspected. If there are still unqualified items, the batch of products will be judged as unqualified.
Marking, packaging and storage
7.1 Marking
Fix the label on the obvious part of the grinding wheel machine. The label shall comply with the provisions of GB13306. 7. 2 Label
The label shall indicate the following contents
Manufacturer specification:
6) Product model and name:
Selected grinding wheel safety wire distance
d) Rated power
) Rated frequency;
F) Rated current:
) Rated speed:
b) Insulation grade;
j) Year of manufacture and production number;
k1 T push.
7.3 Packaging
Product packaging shall comply with the provisions of GB13304, and it is allowed to be packed in a lattice box. 7.4 The following contents shall be marked on the outside of the box: 6) Manufacturer name:
Product model and name:
Product standard code:
d) Net weight and gross weight:
e) Dimensions of the box;
↑ Storage and transportation mark.
FB/T 377C-2000
Note: The storage and transportation mark shall include "Caution", "Afraid of moisture", "Time", etc., and its shape shall comply with the provisions of GB191. 5) The technical documents accompanying each product shall include: a) Certificate of conformity; b) Instruction manual; c) Packing list; 7.6 Storage
The grinding wheel machine shall be kept in a warehouse free of corrosive gas and explosion.5. The temperature rise test shall comply with the provisions of 4.3.[ in DB7991998 5.6 The continuous electric test shall comply with the provisions of JB8799.1998-43.2 5.? The no-hazard test shall comply with the provisions of 4.3.3 in JB8799-1998 Test Rules
【Factory Acceptance Test
JB/T3770-2000
6.1.1 For the products in normal production, the factory acceptance test shall be carried out. Each grinding wheel machine can be shipped only after passing the inspection, and it shall be provided with a product certificate.
6.1.2 The acceptance inspection shall be conducted on 4.3.3, 4.1.4, 4.1.5, 4.1.8, 4.2.6, 4.3.1, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.8, 7.3, etc.
6.2 Spot check test
6.2.1 Spot check test shall be conducted under the following conditions:
After the finalization of the model, the manufacturer conducts the first trial production or small batch trial production: b) When the design or process changes of the grinding wheel machine are sufficient to cause changes in certain characteristics and parameters: ) When the acceptance test results and the previous spot check test results show an unacceptable deviation. 6.1.3 Rules for Sampling Samples
Only one unit of the annual production batch can be inspected: if there are unqualified items, ten more units can be inspected. If there are still unqualified items, the batch of products will be judged as unqualified.
Marking, packaging and storage
7.1 Marking
Fix the label on the obvious part of the grinding wheel machine. The label shall comply with the provisions of GB13306. 7. 2 Label
The label shall indicate the following contents
Manufacturer specification:
6) Product model and name:
Selected grinding wheel safety wire distance
d) Rated power
) Rated frequency;
F) Rated current:
) Rated speed:
b) Insulation grade;
j) Year of manufacture and production number;
k1 T push.
7.3 Packaging
Product packaging shall comply with the provisions of GB13304, and it is allowed to be packed in a lattice box. 7.4 The following contents shall be marked on the outside of the box: 6) Manufacturer name:
Product model and name:
Product standard code:
d) Net weight and gross weight:
e) Dimensions of the box;
↑ Storage and transportation mark.
FB/T 377C-2000
Note: The storage and transportation mark shall include "Caution", "Afraid of moisture", "Time", etc., and its shape shall comply with the provisions of GB191. 5) The technical documents accompanying each product shall include: a) Certificate of conformity; b) Instruction manual; c) Packing list; 7.6 Storage
The grinding wheel machine shall be kept in a warehouse free of corrosive gas and explosion.
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