JB/T 4318.4-1996 Technical requirements for horizontal band sawing machines JB/T4318.4-1996 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Horizontal band sawing machine
Technical conditions
Horizontal band sawing machine
Subject content and scope of application
Technical conditions
This standard specifies the requirements for the manufacture and acceptance of horizontal band sawing machines. This standard applies to horizontal band sawing machines whose maximum sawing diameter is less than or equal to the referenced standard
Machine tool electrical equipment
General technical conditions
Metal cutting machine tools
General technical conditions
Technical conditions for safety protection of sawing machines
Accuracy of horizontal band sawing machines
Metal cutting machine tools
Metal cutting machine tools
Metal cutting machine tools
Metal cutting machine tools
Metal cutting machine tools
General requirements
This standard specifies the cleanliness of horizontal band sawing machines.
Determination of noise sound pressure level
General technical conditions for machined parts
General technical conditions for welded parts
General technical conditions for assembly
Inspection and evaluation of surface color coating method
General technical conditions for hydraulic system
, etc., when accepting machine tools according to this standard, the remaining acceptance items in the above standards that are not specified in this standard must be inspected at the same time. Accessories and tools
Random accessories and tools
In order to ensure the basic performance of the machine tool, the following items should be supplied randomly: Table name
Bimetallic band saw blade
Bundled clamping accessories
Only applicable to horizontal band saw machines with specifications ≤
Special accessories
.
Listed accessories and tools:
Bundled sawing
In order to expand the performance of the machine tool, special accessories can be supplied according to agreement. Ministry of Machinery Industry
Safety and Health
The safety protection of machine tools shall comply with the provisions of
.
There should be no abnormal screaming and impact sounds when the machine tool is running. Under the conditions of low, medium and high speed idling, the sound pressure level of the whole machine noise shall not exceed
. The determination method of the sound pressure level of machine tool noise shall be carried out in accordance with the provisions of.
The operating force of the opening and closing valve handle and the feed fixed length handle shall be assessed according to the requirements of the "common" handwheel, and the band saw blade tensioning handwheel, stepless speed change handwheel, guide block handle, etc. shall be assessed according to the design requirements. Processing and assembly quality
The bed, transmission box and column are important parts, and generally should be aged after rough processing. Wear-resistant measures should be taken for the feed guide pair and the worktable. The following joint surfaces are assessed according to the requirements of "important fixed joint surfaces": the joint surface between the workbench and the workbench plate; the joint surface between the guide plate of the feed rack and the rack; the joint surface between the working vise and the workbench, the feed vise and the slide saddle; the joint surface between the guide arm and the guide rail of the saw frame; the joint surface between the support and the bed, the transmission box and the saw frame; the joint surface between the column seat and the bed is applicable to the column horizontal band saw machine. The surface of the feed slide saddle and the rack guide rail and its matching inlay strip is assessed according to the requirements of "sliding guide rail". When the bed and the saw frame are welded parts, they should comply with the provisions of
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The feeding work surface and the front and rear work surfaces should be parallel and at the same height. Use a flat ruler and a feeler gauge to check. The fixed clamping surface of the feeding vise and the front and rear work vise should be located in the same plane. Use a flat ruler and a feeler gauge to check at the position where the two are closest. The tolerance is
The dirt should not exceed the table
Inspect cleanliness. The internal cleanliness of the spindle box, hydraulic system and other parts is inspected by weight method. The impurities and regulations are as follows.
Inspection part
Spindle box
Hydraulic system
Machine tool idle running test
Maximum sawing diameter
Take the oil from the hydraulic oil tank. The weight of the dirt contained in
is not greater than
The main motion mechanism of the machine tool should be operated in sequence from the lowest speed, and the operation time of each speed level shall not be less than. Machine tools with exchange gears, belt drive and stepless speed change can be operated at low, medium and high speeds. The operation time at the highest speed shall not be less than, so that the spindle bearing reaches a stable temperature, and the bearing temperature and temperature rise are measured. The temperature and temperature rise shall comply with the regulations.
Start the hydraulic system, and perform the idle operation test of the saw frame with the main motion at low, medium and high feed speeds under the rated working pressure. After the oil reaches a stable temperature, measure the temperature and temperature rise of the oil, and the value shall not exceed the regulations.
The full rise time of the saw frame shall comply with the regulations of the design documents: When the feed handle or knob is in the "feed" position and the feed pressure is zero, the movement of the saw frame at any position shall not exceed Only applicable to machine tools with saw frames having balancing devices. When the feed handle or knob is in the "neutral" or inactive position, the descent of the saw frame at any position shall not exceed Only applicable to machine tools with saw frames having balancing devices. When the saw frame rises to the highest position and the feed handle or knob is in the "neutral" or inactive position, the amount of the saw frame's descent shall not be applicable only to machine tools whose saw frames do not have balancing devices. Change the operating handle or button to perform the hydraulic system feed, clamping, and feeding mechanism action tests for no less than times to test their flexibility and reliability.
Horizontal band saws with semi-automatic and automatic cycles should be subjected to operation tests to test their reliability.
Mechanical control and
Electro-hydraulic control of the whole machine continuously idling
Measure the idling power of the machine tool when the whole machine is idling at a medium speed. The idling power of the machine tool shall not exceed the design requirements. Inspection of the working condition of the machine tool electrical system shall comply with the inspection of the working condition and reliability of the lubrication and cooling systems. Machine tool load test
requirements.
This series of machine tools should be subjected to the following load tests according to the test specifications compiled by the design: maximum sawing main force test;
Short-term exceeding the maximum sawing main force
Main transmission system maximum power test:
Maximum productivity test.
Test;
Load test of batch-produced horizontal band sawing machines, check according to the table, and the number of random inspections for each batch shall not be less than one.
Cutting specifications should be followed. For,
Note: The maximum sawing main force and maximum power refer to the maximum values ​​specified in the design. During the load test, all mechanisms of the machine tool should work normally, safely and reliably. Table
Maximum sawing diameter
Minimum band saw blade width
Machine tool accuracy inspection
Machine tool accuracy inspection is carried out according to
Test piece material
.
Test piece diameter
Sawing speed
Should be regularly and comprehensively sampled
Sawing time
When inspecting the working accuracy, a bimetallic band saw blade that meets the standards should be selected and the cutting specifications of normal use should be followed. Productivity
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 test. The actual measured value of the last accuracy inspection shall be recorded in the certificate of conformity. The automatic horizontal band saw machine shall be inspected in addition to the repeatability accuracy of the length of the sawn piece. Inspection items
Repetitive positioning accuracy of feed slide:
Forward:
Inspection items
Repetitive
accuracy of sawn length dimension Applicable only to machine tools with maximum sawing
diameter less than or equal to
Additional instructions:
Maximum sawing diameter
In addition to inspection, the repeated positioning accuracy of feed slide should also be checked according to Table and Table
Inspection tools
Indicator
Test material diameter
Test piece thickness
This standard was proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard was drafted by Changsha Sawing Machine Research Institute. This standard was first issued in
.
Test method
Fix the indicator on the machine tool workbench and the feed rack so that its probe touches the two sides of the fixed clamp of the feed vise vertically. The feed saddle automatically moves forward and back seven times for inspection. The maximum difference of the indicator's seven readings is the repeat positioning error of the feed slide saddle.
Test method
Clamp the semi-finished sample in the vise, and the machine tool will automatically cycle and continuously saw
Specifications or pieces>
Specifications,
Use a micrometer to check the same position of each sawn piece. The maximum difference of the data at the same position is the repeat accuracy of the length of the sawn piece.
People's Republic of China
Mechanical Industry Standards
Horizontal Band Saw
Technical Conditions
Published by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(Beijing Shouti South Road
Mechanical Industry Standards Service Network:
First Printing in June
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