JB/T 9909.3- 99 This standard is a revision of ZBn J55 002-87 "Technical requirements for manufacturing and acceptance of vertical rotary table surface grinders". During the revision, only editorial changes were made according to relevant regulations, and the technical content has not changed. This standard is part of the series of standards JB/T 9909 "Vertical rotary table surface grinders", which includes the following three parts: JB/T 9909.1-1999 Vertical rotary table surface grinder series JB/T 9909.2-1999 Vertical rotary table surface grinder accuracy inspection JB/T 9909.3-1999 Vertical rotary table surface grinder technical conditions The standards that match this series of standards are: GB/T 10927-1989 Vertical rotary table surface grinder parameters This standard specifies the requirements for the manufacturing and acceptance of vertical rotary table surface grinders. This standard is applicable to vertical spindle rotary table surface grinders with working diameters of 500~1600mm. This standard was first issued in May 1981 as JB 3026-81 and was first revised on October 12, 1988. JB/T 9909.3-1999 Technical requirements for vertical spindle rotary table surface grinders JB/T9909.3-1999 Standard download decompression password: www.bzxz.net

IC5 25.080.50
Machinery Industry Standard of the People's Republic of China
JB/T9909.1-9909.3—1999
Vertical Spindle Surface Grinding Machine
1999-05-2 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB.T9909.3-1999
This standard is revised on the basis of 7B㎡J55002-B7 "Technical Requirements for Manufacturing and Running of Vertical Spindle Surface Grinding Machine". The standard is a concretization and supplement to GBT9061-9BB "General Technical Conditions for Metal Cutting Machines". This standard is consistent with 7.nJ55002-B7 "Technical Requirements for Manufacturing and Running of Vertical Spindle Surface Grinding Machines". The technical content of the standard is consistent with that of the standard. This standard is only re-edited according to the relevant regulations. It is part of the series of standards for vertical shaft circular table surface grinders. The series of standards includes the following parts: JB/T9909.1—1999 Vertical shaft circular table surface grinder series JB/T9909.2—1999 Vertical shaft circular table half surface grinder accuracy inspection JB/T9909.31 Vertical shaft circular table half surface grinding machine technical conditions This standard will replace 2BJ55 from the date of implementation of this standard. 00287, This standard was proposed by the National Technical Committee for Standardization of Cutting Machines. This standard is under the jurisdiction of the Grinding Machine Branch of the National Technical Committee for Standardization of Cutting Machines. The responsible unit for this standard is Tianjin Grinding Machine Factory. This standard was first issued in May 1981 as JB302G-81. It was revised for the second time in March 1987, and this is the second revision. 1 National Standard of the Machinery Industry of the People's Republic of China
Technical Conditions for Vertical Shaft Surface Grinding Machines
Technical standards specify the requirements for the manufacture and acceptance of vertical shaft circular table surface grinding machines. This standard applies to 1 vertical shaft circular table surface grinding machines with a working table diameter of 500~160mm. 2 Referenced standards
JB/T9909.3-1999
2B J59002—87
The following standards contain provisions that constitute the provisions of the standard spectrum through reference in this standard. When this standard was published, the version shown was valid. All standards will be revised. All parties using this standard should discuss the continuity of the latest version of the following standards. GB/T 1031—1995
GB/T 226.1—1996
GB/T 9061—1988
GB 13760--{995
JD/T9872-1999
JB/T 9874--1999
JH98771999
E9909.2—55
JE/T100SI-1999
3 General requirements
Table roughness test and acceptance of its values
1. Electrical equipment for industrial machinery Part 1: General technical conditions General technical conditions for metal cutting machine tools
General technical conditions for safety and expansion of metal cutting machine tools General technical conditions for machining parts of metal cutting machine tools General technical conditions for assembly of metal cutting machine tools
The machine tool must be inspected before cutting
Precision inspection of surface grinders
Turbo cutting machine tools
General technical conditions for hydraulic systems
When accepting the machine according to this standard, the same At the same time, the remaining acceptance items in GB/T9061, JB/T9872, JB/T9874 and other standards that have not been integrated into this standard shall be inspected. Accessories and tools The accessories listed in Table 1 and the following shall be randomly included: Table 1 Cooling device Grinding wheel Flat tearing Shim or ground Re-inspection Special tools for machine tools Filling and cooling Flat grinding wheel Clamping and second wheel Compensation and cutting parts Install machine tools According to the machine tool to ensure normal operation, the following shall be followed. 1. The accompanying accessories and the above numbers can be added according to the machine structure points and user cooperation. 2. Special accessories for expanding the usability of the machine tool shall be provided according to user requirements. Approved by the State Machinery Industry Bureau on 100-05-20
Installed on machine tools [
Grinding wheel or grinding tile depends on its particle bed
Implementation on 2000-01-01
5 Safety and Health
JB/99093-1999bZxz.net
5. The rising movement of the grinding head should have a protection device to prevent collision, and it should be fully reliable. 5.2 The rotation and demagnetization of the electromagnetic worktable, the rapid descent of the grinding head and the rotation of the main shaft, etc. should be able to interlock and work reliably. 5.3 The longitudinal and vertical movement guide surfaces should have good protection devices and be strong and durable. 5.4 The yarn wheel guard and the must wheel chuck should meet the safety protection requirements of the corresponding standards. 5.5 The machine tool should have protective devices to prevent the flying of parts and the melting of cooling fluid. 5.6 The electrical system and the wave system should comply with the relevant provisions of GB/T5226.1 and JB/T10051 respectively. 5.7 The safety protection of the machine tool should also comply with the provisions of GB15760. 6 Processing and assembly quality
6.1 The circular guide brush of the worktable is an important guide pair, and wear-resistant measures should be taken. 6.2 The following castings of the machine tool should be aged after roughing a] Bed:
b) Longitudinal moving slide:
c) T-table with circular guide:
d) Column:
e) Grinding body.
6.3 The requirements of the worktable circular guide brush and the vertical point moving guide pair control "sliding [rolling] guide" shall be assessed. 6.4 The longitudinal guide rail of the bed shall be tested according to the requirements of "displacement navigation". 6.5 The joint surface of the column or head body and the pressure plate matched with it shall be tested according to the requirements of "particularly important fixed joint surface". 6.6 The spherical pad of the three-point adjustable stand shall be tested according to the requirements of "important fixed joint surface". 6. The idle travel of the wheel of the vertical feed belt device shall not exceed 1/10. 6.8 The lifting force of the ineffective vertical feed wheel shall be tested according to the requirements of "lightly used handwheel". 69 The grinding wheel spindle shall be balanced together with the rotating parts on the motor, such as the wind room, etc. The working white rotary motor directly installed on the carriage shall be half-balanced together with the reverse sympathetic wheel or coupling, and shall be calibrated at the specified positions respectively. After calibration, the residual instability caused by the double digging amplitude of the motor shall not exceed 6μ for the head motor and 1° for the worktable motor. 6.10 Check the cleanliness according to the provisions of JB/T9877, and the cleanliness of the grinding head bearing part shall be checked by the gravimetric method, and its impurities and dirt shall not exceed 200mg.
7 Special test of machine tool in air operation
7. 1 Temperature rise test of machine tool
All moving parts of the machine tool shall be operated in reverse order for no less than 4 hours at the same time. After reaching the stable temperature, the temperature and temperature rise shall be measured at the spindle bearing near the grinding head, and shall not exceed the specified value. 7.2 Test of grinding head in air operation power
The air operation power of the ground-driven grinding head shall not exceed ±[5% of the specified index: the air operation power of the ground-driven grinding head shall not exceed +25% of the specified index. The method of checking the operating power of the grinding head in
1 Determine the power of the grinding head in air operation: select a 1mm grinding head with good matching quality, calculate the original power, and take the average as the standard. 2 When measuring, the grinding head does not include the wasted power of the motor: 14
7.3 Inspection of vertical reverse feed accuracy of grinding head
JB/T 9909.3--1999
7.3.1 The grinding head is fed with a minimum feed amount. The error of each feed should not exceed 100% of the minimum feed disk. The cumulative error of consecutive feeds should not exceed 150% of its minimum feed. 7.3.2 Inspection
Fix the indicator on the grinding head so that its probe is directly connected to the workbench surface. The grinding head is fed with the minimum feed disk for 10 consecutive times, and the indicator reading is recorded (the feed amount for each time can be arbitrarily extracted from the 10 feeds). The error is calculated by formula (1) and formula (2): Each feed error -L=lx100%
24 -10
10 times feed cumulative error=
Where: 4 Actual feed amount per drink:
6-minimum nominal feed.
7.4 The workbench should rotate smoothly in the entire speed range, without impact and vibration, and stop quickly without reversing. Machine load test
The machine tool is not tested for the maximum weight of the machine and the rated power of the grinding head motor. 1 The machine tool carries the maximum weight of the workpiece. Operation test (spot check) The machine tool carries the maximum weight of 1 piece. According to formula (3), it is determined: W-0.33x
Ning: workbench diameter. mm;
H Maximum height of the workpiece, mm
p Density of steel, e-7.ggm
2 Rated efficiency test of grinding head motor (oil check)ffpx10-6
The vertical feed plate of the grinding head starts from the minimum value and feeds evenly until the grinding head motor reaches the rated (or specified in the design) power. 9 Machine tool precision inspection
9.1 Precision inspection is carried out in accordance with relevant standards JE/9909.2. 9.2 The surface roughness of the workbench table surface shall be in accordance with the provisions of GB103!, and its R value shall not be greater than 1.25μ. ()
9,3 The grinding specifications during the work precision inspection shall be determined by the manufacturer. The surface roughness after the surface roughness test shall be in accordance with the provisions of GB1031, and its R value shall not be less than 125μ.
9.4 The parallelism of the worktable surface to the moving direction of the worktable slide is 0.05mm on a 300mm line (only the worktable with a high outer side is allowed to be
Inspection method: Fix the indicator on the head, transfer the probe vertically to the worktable surface, and move the worktable longitudinally for inspection. The error is the maximum difference in the indicator readings
.9.5 The four items G3, G5, G6 and P1 in JB/T9909.2-1999 are thermal inspection items. They should be inspected when the machine tool reaches a stable temperature.
1 0 Grinding efficiency test [spot check
10. Test specification:
JB/T9909.3-199y
a) The shape and number of the test piece are determined by the manufacturer (can be several fan-shaped plates), the test piece occupies 50% of the workbench: b) Grinding wheel: use the energy wheel supplied randomly:
c) 1 Workbench rotation: specified by the design:
d The power should reach the rated power;
e) The grinding time is 3min:
10.2 Actual measurement: in cubic meters per minute (cmmin) 16
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