JB/T 9911.2-1999 This standard is a revision of ZB J55 004-87 "Technical requirements for the manufacture and acceptance of steel ball grinding machines". This standard is a concretization and supplement to GB/T 9061-1988 "General technical conditions for metal cutting machine tools". This standard is part of the JB/T 9911 "Steel ball grinding machine" series of standards, which includes the following two parts: JB/T 9911.1-1999 Precision inspection of steel ball grinding machines JB/T 9911.2-1999 Technical conditions for steel ball grinding machines The standards supporting this series of standards are: JB/T 8081.1-1999 Parameters of steel ball processing machines JB/T 8081.2-1999 Series of steel ball processing machine tools This standard specifies the requirements for the manufacture and acceptance of steel ball grinding machines. This standard applies to vertical and horizontal steel ball grinding machines with large-circulation grinding and grinding disc diameters of 500~950mm. This standard was first issued in March 1987. JB/T 9911.2-1999 Technical requirements for steel ball grinding machines JB/T9911.2-1999 Standard download decompression password: www.bzxz.net

IC$ 25.080.50
Machinery Industry Standard of the People's Republic of China
JB 9911.1~9911.2—1999
Steel Ball Grinding Machine
1999-05-20 Issued
State Machinery Industry Bureau
2000-01-01 Implementation
[8T9911.2—1999
The standard is in ZB1554? This standard is based on the "Technical Requirements for Steel Ball Grinding Machines and Acceptance", which is a specific and supplementary standard of JB/T9911-1999 "General Technical Requirements for Metal Cutting Machines". This standard is consistent with the technical content of JB/T9911-1999 "General Technical Requirements for Metal Cutting Machines", and has only been re-edited according to relevant regulations. This standard is part of the "JB/T9911-1999 Steel Ball Grinding Machines" series of standards, which includes the following two parts: JB/T9911-1999 "General Technical Requirements for Metal Cutting Machines". Ball grinding machine precision inspection JB/T99I1.2.1999 Technical conditions for steel ball grinding machines The standards that match this standard are:
pai/8081.1-1999 Ball processing machine tool parameters B/T8081.2-1999 Steel ball processing machine tool series harmonic This standard will replace 7BJ55004.-87 from the date of implementation. This standard is issued by the All-Metal Scratching Machine Tool Standardization Technical Committee. This standard is issued by the All-Metal Scratching Machine Tool Standardization Technical Committee. The responsible unit for this standard is Anqing Machine Tool Factory. This standard was issued in March 1987.
1 Standard of the People's Republic of China on Machinery Industry
Technical Conditions for Steel Ball Grinding Machines
This standard specifies the requirements for the manufacture and acceptance of steel ball grinding machines. JB/T9911.2—1999
2[55(04·B7
This standard applies to fixed and horizontal steel ball grinding machines with a ball plate diameter of 500-950mm and large circulation grinding. 2 Referenced Standards
The following standards contain documents that are referenced in this standard and constitute documents that are not dated: When this standard is published, the versions shown must be valid. All standards will be revised. The service provider using this standard should consider the possibility of using the latest version of the following standards. GBT5226.—1996
GB/T 9061—1988
GB13760—1995
GB/T1676y-—1997
JB/T 5563—1991
JB/T8081.1—1999
JB/T 9872.1999
JB/T9874..-1999
JB 9877—1999
JB/T9911.1-1999
JBT100511999
3—General requirements
Shanghai Machinery and Equipment for Electrometallurgy Part 1: General Technical Conditions General Technical Conditions for Metal Cutting Machine Tools
General Technical Conditions for Safety Protection of Metal Cutting Machine Tools Noise Sound Pressure Level of Metal Cutting Machine Tools Machine tool round surface coloring method inspection and evaluation of copper ball processing machine tools
Metal cutting machine tool mechanical processing parts general technical conditions Metal cutting hot bed assembly general technical conditions
Metal cutting machine tool cleanliness determination
Steel ball grinding screw machine skin inspection
Metal cutting machine tool filter pressure system general technical conditions 3.1 When accepting machine tools according to this standard, it is necessary to inspect the remaining acceptance items that are not specified in the public standards such as (iRT9061JB9872, JBT9874, etc.) from time to time. 3.2 The inspection time, inspection method, and number of units for the inspection items specified in this standard shall be determined by the manufacturer on the premise of ensuring the production volume.
4 Machine tool parameters
The machine tool parameters shall comply with the provisions of JB/T8081.1 5 Accessories and tools
5.1 In order to ensure the basic performance of the machine tool, the accessories and tools listed in Table 1 shall be randomly supplied. Approved by the State Machinery Industry Bureau on May 20, 1999 & implemented on January 1, 2000 Special grinding plate for smoke balls Special grinding plate for smoke balls Special wrench Disassembly and assembly Installation machine JB/T99113-1999 For steel ball grinding machine For vertical ball making machine 5.2 Special accessories and tools to expand the performance of the machine tool are supplied according to user requirements. 6 Safety and sanitation 6.1 The machine tool should have an overload protection device. 6.2 The parts of the wheel drive, grinding disc and lowering and grinding agent are equipped with protective covers. 6.3 The machine tool should have a safety device to prevent the two grinding discs from colliding. 6.4 The electrical system of the machine tool shall comply with the provisions of GB5226.1, %5 The hydraulic system of the machine tool shall comply with the provisions of JB/T10051, 6.6 The safety protection of the machine tool shall comply with the provisions of GB15760. 6.7 According to the provisions of GD/T16769, the noise of the machine tool shall be tested. The operation sound pressure level of the machine shall not exceed 83dB (A) under various levels of rotation. 7 Processing and assembly quality
1 The parts listed in Table 2 are important parts and must be aged after adding them. 2
Anti-aging type
Bed, vibration frame: crown plate
True safety pipe fittings name
Fixed plate (or cylinder seat): Bed: frame body (or spindle body): cylinder body The machine tool bed guide rail pair should take anti-sleeping measures, 7.3 The joint surfaces listed in Table 3 should be evaluated as important fixed joint surfaces. Table 3
Starting the test
The connection between the main shaft seat and the end body; the connection between the gear contact seat and the bed; the connection between the headstock and the bed; the connection between the fixed plate seat and the bed
7,4 The following guide rails are tested according to the requirements of "transfer guide rails" (using a horizontal steel ball grinding machine =) Fixed plate magazine moving guide rail pair: wwW.bzxz.Net
b) Fixed plate seat pressure plate moving rail pair.
3B9911.2—999
.5 The spindle with chain body is tested according to the provisions of JB/5563 after assembly. The cone contact is close to the large end, not less than 75% of the working length
7.6 The machine tool oil inspection method is carried out according to the provisions of JB/T9877. The cleanliness of the internal parts of the gearbox (reducing box) in the transmission system shall be inspected by weight. Its impurities and dirt shall not be removed for more than 15 days (disposal inspection, other parts shall be measured daily, and the inductive method shall be inspected. There shall be no dirt,
machine tool idle operation test
, 1. The rotating disk rotates in turn at each speed, and the idle operation shall not be less than 4 hours. The reverse operation time at the highest speed shall not be less than 1 hour. After the main shaft moving bearing quickly reaches a certain humidity, check the bearing temperature and temperature rise. The temperature shall not exceed 70°C, and the temperature rise shall not exceed 40°C. 2. Use a stepless speed feed plate (the secondary ball grinder is the ball conveying guide ring). Run from low speed to high speed, and then from high speed to low speed 3 times. Then run at high speed for 0.5h. The speed change is smooth and reliable, and there should be no climbing phenomenon at low speed. 3. Operate the hydraulic system to make the cylinder reciprocate 5 times, and the movement should be flexible and reliable. 8.4 At each speed, the no-load power deviation of the main transmission system should not exceed 25% of the no-load power index (check separately! 9 Machine tool load test || tt || The machine support of this system is tested for large working force: the load test is carried out at the user's request: 9.! Machine tool maximum working force test: measure the output power of the main motor at the maximum working pressure, and shall not exceed the rated power of the motor. 9.2 Large ball loading operation test: carry out the material tray (or ball conveyor ring) operation test at the maximum ball loading. 10 Machine tool precision stack inspection || tt || 10.1 The machine tool precision seat inspection shall be carried out in accordance with the provisions of B9911.1. 10.2 The three tests of G5, 06 and P1 in JB/T9911.1-1999 shall be carried out when the machine tool reaches medium speed and fixed speed. 18, 3 Working accuracy inspection is generally carried out in the user's factory.
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