JB/T 9908.4-1999 This standard is a revision of ZBn J55 001-87 "Technical requirements for manufacturing and acceptance of horizontal spindle rotary table surface grinders". 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 9908 "Horizontal spindle rotary table surface grinder" series of standards. This series of standards includes the following four parts: JB/T 9908.1-1999 Parameters of horizontal spindle rotary table surface grinders JB/T 9908.2-1999 Series of horizontal spindle rotary table surface grinders JB/T 9908.3-1999 Accuracy inspection of horizontal spindle rotary table surface grinders JB/T 9908.4-1999 Technical conditions for horizontal spindle rotary table surface grinders This standard specifies the requirements for manufacturing and acceptance of horizontal spindle rotary table surface grinders. This standard is applicable to horizontal spindle circular table surface grinders with movable table carriage and ordinary precision and table diameter of 320~1600mm. Horizontal spindle circular table surface grinders with movable grinding head and movable column and ordinary precision can be used as a reference according to the structural characteristics of the machine tool. This standard was first issued in March 1987. JB/T 9908.4-1999 Technical conditions for horizontal spindle circular table surface grinders JB/T9908.4-1999 Standard download decompression password: www.bzxz.net

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Machinery Industry Standard of the People's Republic of China
JB/T9908.1-9908.4—1999
Horizontal Spindle Surface Grinding Machine
1999-05-20 Issued
State Machinery Industry Bureau
2000-01-01 Implementation
JB9908.4-1999
This standard is revised on the basis of ZBnJ55001—B7 Technical Requirements for Manufacturing and Acceptance of Horizontal Spindle Surface Grinding Machines. This standard is a specific supplement to B/9061—1988 "General Technical Requirements for Metal Cutting Machines". This standard is consistent with the technical content of ZB\J55001—87, and has only been re-edited according to relevant regulations. This standard is a revision of JB/T9908 "Horizontal Spindle Surface Grinding Machines" This standard is part of the "Horizontal Spindle Table Surface Grinding Machine" series of standards, which consists of the following four parts: JB/T9908.1-1999 Horizontal Spindle Table Surface Grinding Machine Parameters [B, T9908.2-1999 Horizontal Spindle Table Surface Grinding Machine Series Spectrum JB/T9918.3-1999 Horizontal Spindle Table Surface Grinding Machine Accuracy Qualification 1R/T9908.4-1999 Horizontal Spindle Table Surface Grinding Machine Technical Parts This standard replaces 2Hn155001-87 from the date of implementation. This standard was proposed by the National Metal Cutting Machine Tool Standardization Technical Committee. This standard was issued by the National Metal Cutting Machine Tool Standardization Technical Committee. The responsible unit for this standard is: Yangyang Grinding Machine General Factory. The foreign standard was first issued in March 1987.
Machinery Industry Standard of the People's Republic of China
Horizontal Spindle Surface Grinding Machine
Technical Case
This standard specifies the requirements for the inspection and acceptance of horizontal spindle surface grinding machines JB/9908.4—1999
ZB15087
This standard is applicable to horizontal spindle surface grinding machines with movable table plates and normal precision with a working diameter of 320-160mm. The grinding head movable or vertical movable horizontal spindle surface grinding machines with normal precision can be used as a reference according to the structural characteristics of the machine tool: 2 Referenced Standards
The following standards contain the following provisions: The provisions of this standard are constituted by reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and the parties using this standard shall discuss the possible use of the new versions of the following standards. GB/T 1031--1995
GE/T 5226.1--{996
GB/T 9(NG1—1988
GE 15760—1995
GR/T 16769—1997
JB4029-1R5
J/T9908 .3—1999
J9872—1999
JBT 9874-1999
IB/T 9877—1999
8710851—1999
3 General requirements
Surface roughness parameters and their values
1 Electrical equipment for industry machinery Part 1: General technical requirements General technical requirements for dynamic metal cutting machine tools
General technical requirements for safety protection of metal cutting machine tools Noise level measurement for metal cutting machine tools Technical requirements for safety protection of grinding wheel cover for horizontal axis table Precision inspection
General technical requirements for machinability of metal cutting machine tools General technical requirements for assembly of metal cutting machine tools
Determination of oil content of metal cutting machine tools
Metal cutting When the parts of the milling machine are inspected and accepted according to the standard, the remaining acceptance items in the GD Jinke n61, 1 beat B Xing 9872, JBT9874 and other standards that are not specified in this standard must be inspected at the same time. Www.bzxZ.net
4 Accessories and tools
4.1 The accessories listed in the table 1 should be supplied randomly! 4.2 The special parts listed in 2 towels can be requested according to the situation. Approved by the National Machinery Industry Bureau on 1599-05-20, implemented on 2000-01-01
Parts name
Grinding wheel chuck
Grinding wheel bee teaching paste
Hexagonal sleeve disassembly tool | |tt||Anchor bolt or washer
Special tool for machine tool
Use
Secure system
Grinding wheel
J8/T9908.4-1999
Removal of grinding wheel disc
Installation of machine
Adjustment of engine
Design: The parts and tools listed in the table can be reduced according to the structural requirements of the machine tool and the user's agreement. Table 2
Parts name
Balancing industry
Cleaning equipment and
Dust collection equipment
5 Safety and sanitation
Balancing grinding wheel
Purification of coolant|| tt||Suction seat use
More.! The rising movement of the grinding head should be limited or pre-controlled with group control insurance device, and fully reliable equipment
1 set of building tax bed 1
small attached road vehicle is not
can be used as a proof, compensatory over-wave exhaustion steel supply gradually 5.2 The electric disk worktable rotation and demagnetization, the grinding head rapid descent and the spindle rotation and worktable rotation should be able to be linked and reliable. 5.3 The guide surface of the axial movement and vertical movement should be equipped with good protective devices and should be strong and durable. The grinding wheel guard and the grinding wheel chuck should comply with the provisions of 4029, 5.4
5.5 The machine tool should have protective equipment to prevent the workpiece from flying out and the cooling wave from condensing. 5.6 The electrical system and pressure system should comply with the provisions of GB5226.1 and JB/T10051 and other standards respectively. 5. ? The protection of the machine tool should also comply with the provisions of GH15760. The processing and assembly requirements are as follows:
6.1 The longitudinal guide pair of the bed and the circular guide pair of the worktable are the main guides, and wear-resistant measures should be taken. 6.2 The longitudinal guide pair of the bed, the circular guide pair of the worktable and the vertical moving guide pair of the head (or worktable) shall be tested according to the requirements of "sliding (rolling) guides".
6.3 The arc guide pair for adjusting the degree of the worktable shall be tested according to the requirements of "displacement guides". 6.4 The following main properties must be aged after processing:
b) Longitudinal sliding plate;
Worktable frame:
Column:
) Grinding head body.
JB/T 9908.4-[999
6.5 The joint surface of the grinding head body and its matching bearing plate shall be evaluated according to the requirements of "special single fixed joint surface". 6.6 The joint surface with the bed, column, head and H-bar matching adjustable guide rail joint surface shall be evaluated according to the requirements of "important fixed joint surface".
6.? The operating force of the feed wheel without motorized feed shall be evaluated according to the requirements of "frequently used handwheel". The operating force of all other wheels and handles shall be evaluated according to the requirements of "infrequently used handwheel". 6.8 The reverse idle stroke of the handwheel with vertical feed quality device shall not exceed 1/0r6.9 The grinding wheel spindle shall be rotated together with the motor , wind and other rotating parts on the axis are dynamically balanced together, and corrected at the specified position. After the correction, the remaining unbalance caused by the double reaction shall not be greater than 4. 6.10 Connect JE9B7? Check the cleanliness, the smoothness of the grinding head (excluding the motor position) is checked by the weight plate method, and the impurities shall not exceed 200m1ga
? Machine tool operation test
7.1 Machine tool temperature rise test
The continuous idle operation time of each moving part of the machine tool shall not be less than (the high-speed operation time of the grinding head shall not be less than 10000). After reaching a stable temperature, the oil tank near the main shaft of the grinding head (or oil tank) and the oil pool of the bed shall be heated to 10 ... Measure the temperature and pressure of the plate: and shall not exceed the specified value 7.2 Special inspection of the head
The average idle power of the general head shall exceed the specified index by ±15%: the idle power of the whole head shall not exceed the specified index by +25%.
To confirm the idle power index of the head, you can choose a 1C head with better quality, with a relatively high idle power, and take the average test index. 2 For example, the idle power of the head does not include the electric specification. 7.3 Grinding head feed precision
7.3.1 The grinding head is fed with the minimum vertical feed amount, and the error of each feed should not exceed the minimum feed 7.2 Test force: Fix the energy meter on the grinding head so that the probe touches the worktable vertically. The grinding head is fed continuously at the minimum feed rate and the reading is recorded. Each feed rate can be selected at any time in 10 feeds. The error is calculated according to formula (1) and formula (2):
In the formula:
Minimum nominal reverse feed rate.
Error of each feed. "2,-b
×100%
Cumulative error of 10 feeds =
7.4. Inspection of the stability of the workbench running at low speed
Adjust the workbench moving speed to about α1m/min, and use the indicator with a value of 0.01mm to check that the indicator pointer should rotate continuously within the maximum travel range.
7.5 Inspection of the speed difference of the workbench carriage When the workbench carriage moves within the speed range of 02-2mmu and the maximum travel, the speed difference shall not exceed 10%. 21
The error is calculated according to formula [3]. IB/T 9908.4—1999
Error = t2i×100%
, + I,
are the one-way travel time of the workbench.
Where,
7.6 Inspection of the reversing accuracy of the workbench plate
7.6.1 The reversing position and error of the workbench slide: the same speed is not more than 0.1mm: the different speed is not more than 0.3mm7.6.2 Method
a) The working slide moves at a speed of 0.1-1.5m/min: b) The working slide moves on the whole line:
) The same speed and different speed are repeated 5 times;
d) The inspection tool adopts 0.01mm indication.
Note: The time for the workbench slide to fall in two periods is less than 1.53, (3)
. The workbench should be semi-stable in the light speed range of the metal department, without impact and vibration: the stop should be quick, no reversal: there should be no hate at low speed.
Load test of passenger machine tools
This series of machine tools shall undergo the following load analysis tests: a) The machine tool bears the maximum weight of the workpiece when running test chamber (single inspection); b) The desktop motor reaches the rated (or designed) power test B.1 The machine tool bears the maximum weight of the workpiece when running test The test shall be carried out in accordance with the design specifications, and the workbench (rotating) and its slide (reciprocating) shall run smoothly without abnormal sounds and alarms. After loading, the relevant output items of the machine tool shall be re-inspected and shall be qualified. The maximum amount of workpieces W that the machine tool can carry is determined according to formula (4): R
Where: D is the diameter of the worktable, mm:
is the maximum separation of the grinding workpiece, mm:
is the density of steel (p=7.8gm
8.2 The test specification for the rated power test (spot check) of the exposed motor is as follows:
Hex10-n
8) The specimen is annular. When the worktable diameter is D630mm, the outer diameter of the specimen is D4D/S. When the working diameter is D630mm, the outer diameter of the specimen is. ~2D3: The inner diameter should ensure that the total grinding surface of the test piece is not less than 4/5 of the total area of ​​the non-porous test piece: The test piece material is 45, not hard;
b) The workbench speed is medium;
c) The longitudinal movement speed of the working and dragging plate is 0.1~1.5m/min: (4)
Shan) The grinding head moves vertically, and the feed disk feeds evenly from the minimum value until the grinding head motor reaches the specified (or set! specified) power. 22
9 Precision inspection of machine tools
JB/T 990B.4-195
9.1 Precision inspection shall be in accordance with JB/T9908.3 and other relevant standards. 9.2 The surface roughness of the workbench table is in accordance with CB/T1031, and its R value is not greater than 125m: 9.3 The grinding range during the working precision inspection is determined by the manufacturer! 9.4T When the test piece is tested for precision, the surface roughness shall be in accordance with the provisions of GB/1031, and its R value shall not exceed 0.63m. 9.5T G4, G6 and PF in 9908.3-1999 are thermal inspection items, which should be tested after the machine tool reaches stability. 10 Grinding efficiency [grinding rate] test [spot check] 10.1 Test specification:
a) The test piece is the same as 8.2a);
b The grinding wheel is a coarse grinding wheel supplied randomly:
c) The moving speed of the workpiece swivel seat and the worktable slide is medium speed: d) 1. After the workpiece is polished to no sparks, the grinding head is continuously advanced 10 times with a vertical advance of 0.01mm. 10.2 After grinding, the ratio of total removal to feed shall not be less than 85%. Grinding test of convex and convex specimens of machine tools
11. tTest specification:
a) The inclination angle of the worktable is adjusted to the maximum; b) The specimen is the same as 8.2a):
c) The working speed and the steady speed of the worktable push plate are within the manufacturer's regulations. 11.3 After grinding, the surface roughness of the chain-shaped specimen shall be in accordance with the provisions of GBT1031, and its R value shall not be greater than 1.25μ, and the right-term wave reduction effect shall not be achieved.
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