LY/T 1454-1999Test code for accuracy of wood based panel machinery (English PDF)
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Issued by
State Forestry and Grassland Administration
Level / Type
National · Recommended
Issue date
December 29, 2018
Implementation date
May 1, 2019
Scope
LY/T 1454-1999 (Test code for accuracy of wood based panel machinery) is available as an English-translated PDF.
LY/T 1454-1999 — This standard specifies the mechanical accuracy test method for wood-based panels. The accuracy test includes geometric accuracy inspection and work accuracy inspection.
This standard applies to the precision inspection of wood-based panel machinery (including panel furniture machinery, secondary processing machinery, bamboo processing machinery), and other Wood and bamboo processing machinery can also be used as reference.
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Document preview — LY/T 1454-1999
National Standard of the People's Republic of China
- ICS
- 79.120
- Classification
- B 97
- Replacing
- LY/T 1454-1999
Issued by: State Forestry and Grassland Administration
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Use of inspection methods and measurement tools
- 3.1 Inspection method
- 3.2 Use of measurement tools
- 4 Unit of measurement and measurement range
- 4.1 Unit of measurement
- 4.2 Measurement range
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces LY/T 1454-1999 "General Rules for Mechanical Precision Inspection of Wood-based Panels". Compared with LY/T 1454-1999, except for editorial the main technical changes outside the revision are as follows.
--- Modified the scope;
--- Added normative references;
--- Increased the use of inspection methods and measurement tools;
--- Increased unit of measurement and measurement range;
--- Increased preparation work;
---Modified geometric accuracy test;
--- Modified the work accuracy test.
1 Scope
This standard specifies the mechanical accuracy test method for wood-based panels. The accuracy test includes geometric accuracy inspection and work accuracy inspection.
This standard applies to the precision inspection of wood-based panel machinery (including panel furniture machinery, secondary processing machinery, bamboo processing machinery), and other Wood and bamboo processing machinery can also be used as reference.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 11337 flatness error detection GB/T 17421.1 General rules for machine tool inspection - Part 1. Geometrical accuracy of machine tools under no load or finishing conditions
3 Use of inspection methods and measurement tools
3.1 Inspection method
The accuracy of testing the wood-based panel machinery should be measured by the method of actual measurement. The actual measurement is difficult or difficult. The test error can not be exceeded.
Law (such as the use of limit gauges, etc.).
3.2 Use of measurement tools
Measurement uncertainty due to measurement tools and methods used should be considered during the test. The total error of the inspection tool should be related to the item being tested.
Tolerances are compatible and generally only account for less than 20% of the tolerance of the item being inspected.
For Class A assessments of uncertainty for repeated test data, repeat at least 5 tests for each given test.
The average value of the values is the measurement result.
During the inspection, the interference of airflow, light and heat radiation (such as sunlight, too close to the electric light, etc.) should be prevented.
When there is a significant change, the gauge should be accompanied by an accuracy checklist.
4 Unit of measurement and measurement range
4.1 Unit of measurement
The unit of measurement shall be implemented in accordance with the legal measurement unit of China. Tolerances and measurement ranges should be in the same unit system. Can not directly quote relevant when the standard determines zero, component tolerances, especially dimensional tolerances, it should be detailed. Angle tolerance can be in angle units (degrees, minutes, seconds; arc Degree) or tangent (expressed in millimeters per meter, eg 0.04/1000).
4.2 Measurement range
4.2.1 When the actual measurement range is larger than the specified measurement range, the specified measurement range can be arbitrarily selected within the actual measurement range.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 12 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 11337-2004 — Measurement of departures from flatness
GB/T 17421.1-2023 — Test code for machine tools - Part 1: Geometric accuracy of machines operating under no-load or quasi-static conditions
GB/T 17421.10-2021 — Test code for machine tools - Part 10: Determination of the measuring performance of probing systems of numerically controlled machine tools
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