JB/T 9931.4-1999 This standard is a revision of ZB J57 005-88 "Technical requirements for manufacturing and acceptance of horizontal bow saw machines". During the revision, only editorial changes were made according to relevant regulations, and the main technical content remained unchanged. This standard is a concretization and supplement to GB/T 9061-1988 "General technical conditions for metal cutting machine tools" and other standards. This standard is part of the JB/T 9931 "Horizontal bow saw machine" series of standards, which includes the following four parts: JB/T 9931.1-1999 Parameters of horizontal bow saw machines JB/T 9931.2-1999 Series of horizontal bow saw machines JB/T 9931.3-1999 Accuracy inspection of horizontal bow saw machines JB/T 9931.4-1999 Technical conditions for horizontal bow saw machines This standard specifies the requirements for manufacturing and acceptance of horizontal bow saw machines. This standard applies to horizontal bow saws with a maximum sawing diameter of 160~400mm. This standard was first issued in July 1988. JB/T 9931.4-1999 Technical requirements for horizontal bow saws JB/T9931.4-1999 Standard download decompression password: www.bzxz.net

[C 25.090.30
Machinery Industry Standard of the People's Republic of China
JB/T9931,19931.4--1999
Horizontal Bow Saw
1999-05-20 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T9931.4-1999
This standard is revised on the basis of ZBJ57005-88 Horizontal Bow Saw Manufacturing and Assembly Technical Requirements. The standard is a concretization and supplement to ZBJ57005-88 "General Installation Technical Conditions for Metal Cutting Machine Tools" and other standards. This standard is consistent with the technical content of ZBJ57005-88, and has been fully shortened and revised in accordance with relevant regulations. The small standard is part of the series of standards such as JB 931 "Type 931". This series of standards includes the following parts: JB/T9931.1-1999 Horizontal sawing machine number
JB/79931.2—1999 Horizontal sawing machine series JB/79931.3-1999 Horizontal sawing machine seat inspection JB/79931.41999 Horizontal sawing machine technical conditions This standard replaces 7BJ57005-88 from the implementation date. This standard is proposed by the National Technical Committee for Standardization of Metalworking Machine Tools. This standard is prepared by the National Technical Committee for Standardization of Metalworking Machine Tools. The responsible drafting unit is: Hubei Machine Tool Factory. This standard was first issued in July 1988.
1 Scope
Machinery Industry Standard of the People's Republic of China
Horizontal sawing machine
Technical conditions
This standard specifies the requirements for the manufacture and acceptance of horizontal sawing machines. This standard is applicable to horizontal saws with a maximum sawing diameter of 60~400mm. 1 Referenced standards
JB/T 9931.4--1999
JB/T 8588
The texts contained in the following standards are cited in this standard and constitute the provisions of the standard. When the standard is published, the version shown is valid. All standards will be revised. Parties using this standard should explore the possibility of using the latest version of the following standards. GBT 5226.11996
GB/T9061:1988
GR1G454-1996
GB16769—1997
JB9872—1999
JT9B74-1999
JB.T 9931.3—[999
General requirements
Main business electrical equipment Part 1: General technical conditions Technical conditions for metal cutting machinesWww.bzxZ.net
Safety protection requirements for sawing machines
Methods for measuring the sound pressure level of machine tools before cutting
General technical conditions for machining parts of metal cutting machines General technical conditions for assembly of metal cutting machines Accuracy inspection of horizontal bow sawing machines
When accepting machine tools according to this standard, it is necessary to inspect the remaining acceptance items specified in GB/T9061, JD/T9872, JB/T9874 and other standards at the same time.
4 Accessories and tools
4.1 Accessories and tools
To ensure the basic performance of the machine tool, the accessories and tools listed in Table 1 should be supplied. Table 1
Machine use
Bundle clamping accessories
4.2 Special accessories
Bundle sawing
In order to expand the performance of the machine tool, special accessories can be supplied according to the agreement. 5 Safety and health
5.1 The safety protection of the machine tool shall comply with the provisions of GB16454. Approved by the State Machinery Industry Bureau on May 20, 1999, 12
2000-01-01 implementation
JB/T 9931.4—1999
5.2 There should be no abnormal noise and impact noise during the operation of the machine tool. The measurement of the noise level of the machine tool shall be carried out in accordance with the provisions of GB16769. In the low, medium and high speed transmission system, the whole noise level shall not exceed 8B (A) 5.3 The operation of the hand wheel, hand pick shall be tested according to Table 2. The operation force of the hand wheel and handle shall be cold hook 2
Probe the lower handle
6 Processing and assembly quality
Tiger Xuan moves on the steel
6.1 The main or auxiliary of the saw bow is an important guide, and the front grinding should be adopted. The material rack lifting hand wheel
6.2 The bed, support frame, fire plate (or saw convex), saw horse, and rocking frame are important parts and must be subjected to aging treatment. 6.3 The following joint surfaces shall be evaluated according to the requirements of "important fixed joint surfaces": a) Support frame installation joint surface: b) Cell clamp installation joint surface.
6.4 The mating surface between the saw bow and the saw span shall be inspected by a 0.04mm feeler gauge in addition to the color coating method. The feeler gauge shall not exceed 20° when inserted into the probe.
6.5 The mating surface gap between the saw blade and the splint shall be inspected by a 0.04mm feeler gauge in addition to the color coating method. The feeler gauge shall not exceed 5° when inserted into the probe. (This is applicable to industrial plate structures.)
(.6 The guide is well connected with the rolling element, and the movement is light and flexible without blocking. 6 The matching surfaces of the support frame, rocker (lead arm) and the whole pad should be checked with a 0.74mm feeler gauge (the color coating method should also be used during the assembly process. The insertion depth of the table ruler shall not exceed 5mm. For the feeding work, it should be parallel to the main working surface at the same height. Use a flat ruler and a table ruler to check. The feeding work table is allowed to be 0.20mm lower (the instrument is suitable for automatic type
6.9 The fixing surface of the feeding vise and the T. work vise should be located in the plane. Check with a flat ruler and a table ruler. The filling is 20mm (the instrument is suitable for automatic type
7 Machine tool idle operation test
7. The main motion machine of the visual machine starts from the lowest speed and runs in sequence. The running time of each speed level shall not be less than 2m. The high-speed variable running time is less than 30min, and the total idle running time is not less than ten t h7.3 When the idle running rate of each speed is stable, check the idle running rate of the main movement (check. 7.3 The feeding mechanism should work smoothly, its operating position should be accurate, and its action should be coordinated with the main movement. 7.4 Follow the instructions to work properly and do an idle running test of the feeding system. 7.4.1 The indicated feed amount and actual feed of the operating handle at any feeding position shall comply with the requirements of the drawings or technical documents, from slow to fast, and the zeroing shall be uniform (only for fixed egg feeding mode) 7.4.2 Under the feeding state, the movement of the plug (or cylinder) shall not exceed 3mm/m. 7.4.3 When the vertical handle is in the "down" position and the staggered arm is lowered from the highest position to the lowest position, the number of times the saw arm is raised shall not exceed 10 times (applicable to saw arm structure)
7.4. When the operating handle is in the "up" position and the staggered arm is raised from the lowest position to the highest position, the saw arm shall be The number of repetitions shall not exceed 20 times 13
【Only applicable to lower bone structure》
J/T993L.4--1999
7.4.5 When the arch handle is in the "down" position, the time required for the arch stroke to descend shall comply with the provisions of Table 3 (applicable to clamp type structure) Table
Maximum vertical diameter
Descending time
7.4.6 When the operating hand is in the "lead" position, the time required for the arch stroke to rise shall comply with the provisions of Table 1 (applicable to clamp type structure) 4
Maximum vertical diameter
Rising time
5 The operating handle (or button) should be changed many times to carry out the working cycle test of the feeding, clamping and feeding mechanism of the press system. All performance indicators shall comply with the provisions of relevant standards or technical documents (applicable to automatic horizontal machines) 7.6 The electrical system of the machine tool shall comply with the provisions of line B 5226 .1 relevant provisions. 7.1 The safety protection device of the machine tool shall comply with the relevant provisions of GB16454. 7. Self-inspection of the working condition and reliability of the lubrication and cooling system 7.9 After the idling test, inspect the geometric accuracy of each item according to JB/T9931.3, and check the basic parameters of the machine tool. Male machine tool load test
This series of machine tools are subjected to the following load tests: a) Test of the maximum sawing main component
Test of the main transmission system reaching the maximum power: maximum productivity test,
The load or test of the horizontal bow sawing machine produced in batches shall comply with the provisions of Table 5. Items a), b), and c) shall be regularly and comprehensively checked, and each batch shall be inspected for at least ten pieces
The maximum standard diameter
>160-250
The test pieces shall be
There shall be
The machine tools shall all work normally, safely and reliably. 14
Break time
Machine tool precision inspection
JB/T9931.4-t999
9,1Machine tool precision inspection shall be in accordance with R9931.3. 9.1 When inspecting the working condition, the machine tool should be selected according to the standard. The standard should comply with the relevant regulations. The geometric accuracy of the machine tool should be inspected before and after the load test. The working accuracy test of the machine tool should be carried out after the load-free test. The actual measured value of the last accuracy test should be certified. 9.4 In addition to the inspection according to JF/T9931.3, the automatic horizontal sawing machine shall also be inspected according to Table 6 and Table 7 for the repeat positioning accuracy of the feeding device and the weight accuracy of the piece length scale: Table 6
Test source
Basic positioning accuracy of the feeding device:
aPresent:
Test items
Fragment length
Weight accuracy
Inspection tools
Indication rate
Air diameter
Inspection method
Fix the indicator on the machine workbench and the feeding table so that its center is directly adjusted to the fixed position of the feeding device. The feeding device automatically moves forward and backward seven times for inspection.
The maximum difference of the seven readings of the indicator is the real error of the positioning reading difference
Test thickness item
Test method
Put the test piece after half-turning in the tiger auxiliary
, the machine tool automatically traces the ring, continuously cuts the workpiece, and uses the subdivider to check the position of each test piece. The total value of the data at the same position is the actual length dimension.
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