JB/T 2617.3-1999 This standard is a revision of ZB J55 036-88 "Technical requirements for crankshaft grinder manufacturing and acceptance". This standard is part of the JB/T 2617 "Crankshaft grinder" series of standards: JB/T 2617.1-1999 Crankshaft grinder parameters JB/T 2617.2-1999 Crankshaft grinder accuracy inspection JB/T 2617.3-1999 Crankshaft grinder technical conditions This standard specifies the requirements for crankshaft grinder manufacturing and acceptance. This standard is applicable to ordinary precision crankshaft grinders with a maximum rotary diameter of 250~800mm, a maximum workpiece length of 500~4000mm, and a movable worktable. This standard was first issued in December 1979 and revised for the first time in October 1988. JB/T 2617.3-1999 Technical requirements for crankshaft grinding machines JB/T2617.3-1999 Standard download decompression password: www.bzxz.net

ICS25.080.50
Machinery Industry Standard of the People's Republic of China
JB/T2617.3-1999
Crankshaft Grinder
Published on 1999-05-20
Technical Conditions
Implemented on 2000-01-01
National Bureau of Machinery Industry
JB/T2617.3—1999
This standard is revised on the basis of ZBJ55036-88 "Technical Requirements for Manufacturing and Acceptance of Crankshaft Grinders". This standard is a concretization and supplement to GB/T9061-1988 "General Technical Conditions for Metal Cutting Machine Tools" and other standards. This standard is consistent with the technical content of ZBJ55036-88, and has only been re-edited according to relevant regulations. This standard is part of the JB/T2617 series of standards for crankshaft grinders, which includes the following three parts: JB/T2617.1—1999
JB/T2617.2—1999
Crankshaft grinder parameters
Crankshaft grinder accuracy inspection
JB/T2617.3—1999
Crankshaft grinder technical conditions
This standard replaces ZBJ55036-—88 from the date of implementation. This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is under the jurisdiction of the Grinding Branch of the National Technical Committee for Standardization of Metal Cutting Machine Tools. The responsible drafting unit of this standard is Shanghai Machine Tool Factory. This standard was first issued in December 1979 as JB2619-79, and was first revised as ZBJ55036-88 in October 1988. This is the second revision.
1 Scope
Machinery Industry Standard of the People's Republic of China
Crankshaft Grinder
Technical Conditions
This standard specifies the requirements for the manufacture and acceptance of crankshaft grinders. JB/T2617.3-1999
Replaces ZBJ55036-88
This standard applies to full-precision crankshaft grinders with a maximum rotary diameter of 250~800mm, a maximum workpiece length of 500-4000mm, and a movable worktable.
2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest version of the following standards. GB/T1031—1995
Surface roughness parameters and their values
Industrial machinery and electrical equipment Part 1: General technical conditionsGB/T5226.1—1996
GB/T9061—1988
GB 15760—1995
JB/T2617.2—1999
JB4029—1985
JB/T 9872—1999
JB/T9874—1999
JB/T9876—1999
JB/T 9877—1999
JB/T9924—1999
JB/T10051—1999
3 General requirements
General technical conditions for metal cutting machine tools
General technical conditions for safety protection of metal cutting machine tools Precision inspection of crankshaft grinders
Grinding wheel guards of grinders
Technical requirements for safety protection
Metal cutting machine tools
Metal cutting machine tools
Metal cutting machine tools| |tt||General technical conditions for machined partsWww.bzxZ.net
General technical conditions for assembly
Inspection and evaluation of the color coating method for joint surfaces
Metal cutting machine tools
Determination of cleanliness
Grinding surface waviness
General technical conditions for hydraulic systems of metal cutting machine tools When accepting machine tools according to this standard, the remaining acceptance items in GB/T9061, JB/T9872, JB/T9874 and other standards that are not specified in this standard must be inspected at the same time.
4 Accessories and tools
The accessories and tools listed in Table 1 should be supplied randomly. Approved by the State Bureau of Machinery Industry on May 20, 1999 and implemented on January 1, 2000
Appendix Name
Coolant Tank
Open Center Stand
Grinding Wheel Dresser
Vertical Sample Plate
Horizontal Sample Plate
Left Chuck
Right Chuck
Grinding Wheel with Chuck
Balance Shaft
Measuring Bridge
Grinding Wheel Hook
Common Wrench
JB/T2617.3-1999
Supporting workpiece
Dressing grinding wheel
Clamping workpiece
Clamping grinding wheel
Balancing grinding wheel
Holding workpiece
Measuring
Hanging grinding wheel
Installation
Adjustment and operation
Note: Special accessories to expand the performance of machine tools are supplied according to user requirements and agreements. 5 Safety and Health
The interlocking of semi-automatic machine tools should be able to meet the following requirements: 5.1
a) When the workbench moves, the headstock shall not rotate; b) When the grinding wheel is introduced quickly, the workbench shall not move; c) The grinding wheel frame can only be introduced quickly after the workbench positioner is inserted into the positioning ruler: d) After the center frame is introduced quickly, the workbench shall not move: e) After the tool holder is introduced quickly, the workbench shall not move. 5.2
The wheel guard shall comply with the relevant provisions of JB4029. The electrical and hydraulic systems shall comply with the relevant provisions of GB/T5226.1 and JB/T10051 respectively. The safety protection of the machine tool shall also comply with the provisions of GB15760. Processing and assembly quality
The longitudinal guide rails of the bed shall take wear-resistant measures. The following important castings shall be aged after rough machining:6.2
a) Bed:
b) Upper and lower worktables.
Not available when using special fixtures
Not available when using special fixtures
Not available when using special fixtures
Not available when using special fixtures
Not available when using special fixtures
Not available for the spindle without tapered hole for the head and tail stock
Not available for a flat worktable
The quantity depends on the specifications of the machine tool
The surfaces of the longitudinal and transverse guide rails of the bed and their mating parts shall be assessed in accordance with the requirements of “static pressure and sliding (rolling) guide rails”, and the guide surfaces of the worktable and the mating headstock and tailstock shall be assessed in accordance with the requirements of “displacement guide rails”. The following joint surfaces shall be assessed according to the requirements of "particularly important fixed joint surfaces": 6.5
a) Joint surface of combined bed:
b) Joint surface of grinding wheel frame pad and bed: C) Joint surface of upper worktable and lower worktable JB/T2617.31999
6.6 When mechanical processing is adopted for guide rail pair and joint surface, the inspection and evaluation of joint surface contact shall be in accordance with the provisions of JB/T9876 6.7 In addition to the headstock spindle, grinding wheel spindle, tailstock sleeve and top cone which shall meet the requirements of 2.1.2 in JB/T9874-1999, the grinding wheel chuck shall also meet this requirement.
6.8 The operating force of the horizontal feed hand wheel shall be assessed according to the requirements of "common hand wheel" in slow gear: the operating force of the hand wheel and handle in fast gear and other parts shall be assessed according to the requirements of "uncommon hand wheel"; the operating force of the tailstock handle shall be in accordance with the design requirements. 6.9 The reverse idle stroke of the horizontal feed hand wheel shall not exceed -10
The transmission motors of the headstock, grinding wheel frame and oil pump shall be balanced and calibrated together with the pulley or coupling. After calibration, the double amplitude of vibration caused by the residual unbalance shall not exceed the following values: headstock motor, 8um: oil pump motor, 8um; grinding wheel frame motor, 4um. Note: The oil pump installed on the independent oil tank is not tested. 6.11 According to the provisions of JB/9877 and other relevant standards for inspecting the cleanliness of machine tools, inspect the cleanliness of the grinding wheel frame, and the weight of the dirt in the grinding wheel frame shall not exceed 200mg (spot check).
7 Machine tool idling test
7.1 Machine tool temperature rise test
The machine tool idling time shall not be less than 4h. After reaching a stable temperature, the temperature and its temperature rise value shall be measured in the grinding wheel frame and the bed oil pool (or oil tank). The temperature shall not exceed the relevant regulations.
7.2 Grinding wheel frame idle power test
Grinding wheel frame idle power should not exceed the specified index by 15% Note
1 To determine the idle power index of the grinding wheel frame, 10 sets of assembled grinding wheel frames should be selected, and their idle power should be measured, and the average value should be taken as the index. 2 The power consumed by the motor itself should be deducted during measurement and inspection. 7.3 Inspection of the rapid introduction of the grinding wheel frame
The time for the rapid introduction of the grinding wheel frame (including buffering) shall not exceed the provisions of Table 2. Table 2
Maximum workpiece rotation diameter
≤400
7.4 Smoothness test of low-speed operation of the worktable
When the moving speed of the machine tool worktable is adjusted to 0.1m/min, its movement within the maximum workpiece length range should be smooth. During the inspection, an indicator with a display value of 0.01mm can be used for inspection, and the indicator should rotate evenly and continuously. Note: This item is not applicable to machine tools that do not rely on the movement of the worktable to dress the grinding wheel. 7.5 Smoothness test of low-speed continuous operation of the grinding wheel frame3
JB/T2617.31999
When the speed of the grinding wheel frame is adjusted to 0.1m/min, the movement should be smooth within the entire travel range. During the inspection, an indicator with a display value of 0.01mm can be used for inspection, and the indicator should rotate evenly and continuously. Machine tool load test (spot check)
This series of machine tools does not conduct "maximum torque" and "maximum cutting main force" tests, but only conducts the grinding wheel frame motor to reach the rated (or design specified) power test, and the test specifications are as follows:a) Test piece: as specified by the manufacturer:
b) Headstock speed: medium speed or high speed:
c) Lateral feed: Cut-in feed until the motor reaches the rated (or design specified) power. Note: The grinding position is close to both ends of the head and tail frames. Grinding rate inspection (spot check)
Use the cutting method to inspect, the ratio of grinding amount to feed amount shall not be less than 85%, and the measured value shall be calculated according to the average value of two turns, and the specifications are as follows: a) Test piece: according to the test piece specified in JB/T2617.2 working accuracy; b) Headstock speed: medium speed;
Wheel: according to design requirements
e) Sand
d) Lateral feed: 0.05mm;
e) Grinding time: working approximately 15r:
f Grinding position: two turns at both ends of the head and tail stock. 10 Machine tool accuracy inspection
10.1 Machine tool accuracy inspection shall be in accordance with the provisions of JB/T2617.2 10.2 The grinding specifications of the test piece of working accuracy shall be determined by the manufacturer. 10.3 During the working precision test, the surface roughness of the test piece shall comply with the provisions of GB/T1031, and its surface roughness R value shall not be greater than the following provisions:
General crankshaft grinder: 0.32um:
Crankshaft grinder with semi-automatic structure: 0.63μm. 10.4 During the working precision test, the surface waviness of the test piece shall comply with the provisions of JB/T9924, and its average amplitude value W shall not be greater than 1.6um. 4
Mechanical Industry Standard
Technical Specifications for Crankshaft Grinders
JB/T2617.3—1999
Published by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry Printed by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Book Size 880×1230
X Number of Words xXX,XXX
Sheet X/X
Xth Printing in XX Month, 19XX
Xth Edition in XX Month, 19XX
Number of Prints 1-XXX
Price XXXXX Yuan
XX-XXX
666117
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