JB/T 6197.2-1999 JB/T 6197.2-1999 Technical conditions for shear blade grinding machines JB/T6197.2-1999 Standard download and decompression password: www.bzxz.net

ICS 25.080.50
J55
JB
Machinery Industry Standard of the People's Republic of China
JB/T6197.1~6197.2-1999
Shear Blade Grinding Machine
1999-05-20 Issued
State Bureau of Machinery Industry
Issued
2000-01-01 Implementation
JB/T6197.2—1999
Foreword
This standard is revised on the basis of ZBnJ55038-88 "Technical Requirements for Manufacturing and Acceptance of Shear Blade Grinding Machines". This standard is a concretization and supplement to GB/T9061-1988 "General Technical Requirements for Metal Cutting Machine Tools" and other standards. This standard is consistent with the technical content of ZBnJ55038-88, and has only been re-edited according to relevant regulations. This standard is part of the JB/T6197 "Shear Blade Grinding Machine" series of standards, which includes the following two parts: JB/T6197.1--1999 Shear Blade Grinding Machine Precision Inspection JB/T6197.2-1999 Shear Blade Grinding Machine Technical Conditions The standards that match this standard are:
JB/T6089-1992
Shear Blade Grinding Machine
Series Model Spectrum
JB/T6197--1992 Shear Blade Grinding Machine Parameters This standard replaces ZBnJ55038-88 from the date of implementation. This standard is proposed by the National Technical Committee for Metal Cutting Machine Tool Standardization. This standard is under the jurisdiction of the Grinding Machine Branch of the National Technical Committee for Metal Cutting Machine Tool Standardization. The responsible drafting unit of this standard is Jiangxi No. 3 Machine Tool Factory. This standard was first issued on October 12, 1989. 10
1 Scope
Standard of the Machinery Industry of the People's Republic of China
Technical Conditions for Shear Blade Grinding Machines
This standard specifies the requirements for the manufacture and acceptance of shear blade grinding machines. JB/T 6197.2—1999
Replaces ZBn J55 038-88
This standard applies to shear blade grinding machines with a worktable width of 140~320mm, a worktable length of 630~4500mm, and a movable grinding head.
2 Referenced Standards
The provisions contained in the following standards are construed as provisions of this standard by reference in this standard. The versions shown are valid at the time of publication of this standard. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T 10311995
GB/T5226.11996
GB/T 9061—1988
GB/T 14534-1993
GB 15760—1995
GB/T 16769—1997
JB 4029—1985
JB/T 6197.1—1999
JB/T 9872—1999
JB/T9874—1999
JB/T10051—1999
3
General requirements
Surface roughness parameters and their values
Industrial machinery and electrical equipment Part 1: General technical conditions General technical conditions for metal cutting machine tools
Electromagnetic chuck
General technical conditions for safety protection of metal cutting machine tools Measurement method for noise sound pressure level of metal cutting machine tools Grinding wheel guards for grinding machinesSafety protection technical requirementsShear blade grinding machine precision inspection
Technical conditions for machining parts of metal cutting machine toolsMetal cutting machine tools
General technical conditions for assembly
Metal cutting machine tools
General technical conditions for hydraulic systems
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
4.1 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
Name
Cooling box and chip removal device
Grinding wheel dresserbZxz.net
Grinding wheel chuck
Grinding wheel removal tool
Grinding
Pad
Wheel
Iron
One tool necessary for adjusting the machine tool
4.2
JB/T6197.2-1999
Table 1
User
The special accessories listed in Table 2 can be supplied according to agreement. Name
Grinding wheel balancing spindle
Grinding wheel balancing frame
Note
Purpose
Table 2
Purpose
1 The accessories and tools listed in the table can be increased or decreased according to the user agreement. 2 Special accessories to expand the performance of the machine tool are supplied according to the agreement based on the user's requirements. Safety and Health
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5.1 The safety protection of the hydraulic system shall comply with the relevant provisions of JB/T10051. 5.2 The longitudinal reciprocating motion of the grinding head shall be equipped with a limit buffer device. 5.3 The safety protection of grinding wheels shall comply with the provisions of JB4029, quantity
1 set
1 piece
2 sets
1 set
2 pieces
1 set
Number
Maximum
set
Set
Reserve
Note
1 set in machine tool 1
The quantity is determined according to the specifications of the machine tool
Reserve
Note
5.4 The operating force of the vertical feed handwheel shall be assessed according to the requirements of the "frequently used" handwheel, and the worktable rotation handwheel shall be assessed according to the requirements of the "infrequently used" handwheel.
5.5 The opening and closing of the electric control cabinet door and the power on and off, and the power on and off between the electromagnetic chuck and the grinding head motor and the transmission motor should all have safety interlocking devices. 5.6 The machine tool noise should be tested according to GB/T16769. No obstacles should be placed around the machine tool during the machine tool noise measurement. The distance between the machine tool and the wall should not be less than 2000mm. When the machine tool is measured under idling conditions, the sound pressure level of the whole machine noise measured by the precision sound level meter should not exceed 85dB (A). 5.7 When accepting the machine tool according to this standard, the remaining acceptance items in GB15760 that are not specified in this standard, as well as the acceptance items specified in GB/T5226.1 and JB/T10051 and other standards must be inspected at the same time. 6 Processing and assembly quality
6.1 The grinding head longitudinal moving guide pair is an important guide pair, and wear-resistant measures should be taken. When using steel belts and rollers, the material and heat treatment requirements of the steel belts and rollers should comply with the design drawings. The contact between the steel belt and the roller should be greater than 75% in width. 6.2 The vertical moving guide rail pair of the grinding head shall be assessed according to the requirements of "sliding (rolling) guide rail". 12
JB/T6197.2--1999
6.3 The joint surface between the frame and the column shall be assessed according to the requirements of "particularly important fixed joint surface". 6.4 The following castings must be aged after rough machining: a) frame;
b) column;
c) slide plate;
d) grinding head body:
e) cast iron bed.
Note: If the bed is a welded bed, it must be annealed and shall comply with the provisions of relevant standards. 6.5 The reverse idle stroke of the vertical feed handwheel shall not exceed 1/10r6.6 The grinding wheel spindle, together with the motor rotor and fan mounted on the spindle, shall be dynamically balanced and calibrated. After calibration, it shall be inspected on the grinding head. The double amplitude value of the vibration caused by its residual unbalance shall not be greater than 8μm. 7 Machine tool idling test
7.1 All moving parts shall run continuously for no less than 4 hours at the same time. After reaching a stable temperature, the temperature and temperature rise shall be measured at the outer shell of the grinding wheel spindle bearing and in the hydraulic oil pool. The temperature and temperature rise shall not exceed the specified value. 7.2 The idling power of the self-driven grinding head shall not exceed 25% of the idling power index of the grinding head: the idling power of the externally driven grinding head shall not exceed 15% of the idling power index of the grinding head.
Note
■ To determine the idling power index of the grinding head, 10 grinding heads with good assembly quality shall be selected, and their idling power shall be measured, and the average value shall be taken as the index. 2 During measurement and inspection, the power consumed by the motor itself shall be deducted. 7.3 The grinding head shall be fed vertically, and the feed error shall not exceed 100% of the vertical feed amount each time, and the cumulative error of 10 consecutive feeds shall not exceed 20%. During inspection, the grinding head shall be introduced with the minimum feed amount. Feed error is calculated according to formula (1) and formula (2): Feed error each time:
Ja,bl
Cumulative error of 10 consecutive feeds
In the formula: - Actual feed amount each time:
b Nominal feed amount each time.
7.4 Within the speed range of the machine tool, the transmission should be smooth and no creeping should be allowed at low speeds. 7.5 The suction power of the electric workbench should comply with the regulations of GB/T14534. 8 Machine tool load test
100%
10h
10b
The test is conducted using the pre-grinding method. The test specifications are as follows. 8.1 When grinding with a grinding wheel:
(1)
(2)
a) The sample material is 45 steel (not rate Hard): When the workbench width is 140mm, the specimen size is 600mm×100mm×40mm; when the workbench width is 200mm, the specimen size is 1200mm×140mm×40mm. b) The grinding wheel is ND×HbA46K5V30.
13
8.2 When using sand tiles to grind the front:
JB/T6197.2-1999
a) The specimen material is 45 steel (not hard); When the workbench width is 320mm, the specimen size is 2500mm×250mmx40mm.
b) The sand tile is WT100/85×35×150A46L5B35. 8.3 The longitudinal reciprocating speed of the grinding head is medium speed. 8.4 The vertical feed should be increased evenly until the motor reaches the design power. During the load test, all mechanisms of the machine tool should work normally.
Note: For machine tools with double-density heads, only the rough grinding head will be assessed. 9
Machine tool accuracy inspection
9.1 Machine tool accuracy inspection is carried out in accordance with JB/T6197.1. 9:2 The surface phase angle R value of the workbench (according to GB/T1031-1995) shall not be greater than 1.25 μm. 9.3 The working accuracy of machine tools shall be determined after the load test. Grinding specifications are specified by the manufacturer. During inspection, the surface roughness of the specimen should also be inspected in accordance with GB/T103, and its R, value shall not be greater than 1.25 μm. 14
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