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Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 26548.8-2021: Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 8: Saws, polishing and filing machines with reciprocating action and small saws with oscillating or rotating action Status: Valid
Basic dataStandard ID: GB/T 26548.8-2021 (GB/T26548.8-2021)Description (Translated English): Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 8: Saws, polishing and filing machines with reciprocating action and small saws with oscillating or rotating action Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J48 Word Count Estimation: 28,221 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 26548.8-2021: Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 8: Saws, polishing and filing machines with reciprocating action and small saws with oscillating or rotating action---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Hand-held portable power tools - Test methods for evaluation of vibration emission - Part 8.Saws, polishing and filing machines with reciprocating action and small saws with oscillating or rotating action ICS 13.160; 25.140.10 CCSJ48 National Standards of People's Republic of China Vibration test method for handheld portable power tools Part 8.Reciprocating saws, polishers and files And swing or rotary saws (ISO 28927-8.2009, IDT) Released on 2021-10-11 2022-05-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is part 8 of GB/T 26548.GB/T 26548 has released the following parts. ---Part 1.Angle and end face grinders; ---Part 2.Gas trigger, nut wrench and screwdriver; ---Part 3.Polishing machines, rotary, sliding and compound polishing machines; ---Part 4.Straight shank grinder; ---Part 5.Drills and impact drills; ---Part 6.Compaction machine; ---Part 7.Punching machines and scissors; ---Part 8.Reciprocating saws, polishing machines and files, and pendulum or rotary saws; ---Part 9.Derusting hammer and needle beam derusting device; ---Part 10.Impact rock drills, hammers and breakers; ---Part 11.Stone Hammer; ---Part 12.Mold grinder. The translation method used in this document is equivalent to ISO 28927-8.2009 ``Handheld Portable Power Tools Vibration Test Method Part 8. Reciprocating saws, polishers and files, and pendulum or rotary saws. This document incorporates the amendments of ISO 28927-8.2009/Amd.1.2015 and ISO 28927-8.2009/Amd.2.2019. The clauses involved in these amendments have been marked by a vertical double line () on the outer margins. The Chinese documents that have consistent correspondence with the normatively cited international documents in this document are as follows. ---GB/T 5621-2008 Performance test method for rock drilling machinery and pneumatic tools (ISO 2787.1984, MOD) ---GB/T 6247.1-2013 Rock Drilling Machinery and Portable Power Tools Terminology Part 1.Rock Drilling Machinery, Pneumatic Tools and Pneumatic machinery (ISO 5391.2003, MOD) ---GB/T 6247.2-2013 Terminology for rock drilling machinery and portable power tools Part 2.Hydraulic tools (ISO 17066. 2007, IDT) ---GB/T 14790.1-2009 Mechanical vibration Measurement and evaluation of human exposure to hand-transmitted vibration Part 1.General requirements (ISO 5349-1.2001,IDT) ---GB/T 14790.2-2014 Mechanical vibration Measurement and evaluation of human exposure to hand-borne vibration Part 2.Workplace Practical Guide to Measurement (ISO 5349-2.2001, IDT) ---GB/T 25631-2010 Mechanical vibration Hand-held and hand-guided mechanical vibration evaluation rules (ISO 20643.2005, IDT) This document has made the following editorial changes. --- Convert the "bar" in the international standard to "MPa" (1bar=0.1MPa); ---According to the specific circumstances of the normatively cited documents in this document, the ISO 2787.1987, ISO 5349.2001 in Chapter 2 (All parts), ISO 5391.2003, ISO 16893-1.2008, ISO 17066.2007 and EN12096.1997 are changed to ISO 2787, ISO 5349 (all parts), ISO 5391, ISO 16893-1, ISO 17066 and EN12096. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by China Machinery Industry Federation. This document is under the jurisdiction of the National Standardization Technical Committee for Rock Drilling Machinery and Pneumatic Tools (SAC/TC173). Drafting organizations of this document. Taitian Group Co., Ltd., Dongguan Institute of Technology, Tianshui Rock Drilling Machinery Pneumatic Tool Research Institute. The main drafters of this document. Lin Xuejun, Zhou Zirong, Wang Jianzu, Li Weijie.IntroductionIn order to measure the vibration radiation value of the handle of the handheld portable power tool in expected use, to evaluate and manage the operation of the operator in the use of the machine The International Organization for Standardization plans to formulate a 13-part document of ISO 28927 for the risk of vibration damage faced by the industry. Has been released so far The 12-part document, and the 13-part document is under development. China intends to adopt the same standard for 13 partial documents of ISO 28927. It is determined as the document corresponding to each part of GB/T 26548.The proposed composition of GB/T 26548 is as follows. ---Part 1.Angle and end face grinders. Covers hands equipped with protective covers for grinding, cutting and rough grinding on various materials Holding machine. ---Part 2.Gas trigger, nut wrench and screwdriver. Covers hand-held machines for tightening and loosening threaded fasteners. ---Part 3.Polishing machines, rotary, sliding and compound polishing machines. Covers the purpose of surface treatment rather than removal of material Purpose of the handheld machine. ---Part 4.Straight shank grinder. Covers the use of various flat grinding wheels, double bevel grinding wheels, and core grinding heads on various materials Hand-held machine for grinding and surface finishing operations. ---Part 5.Drills and impact drills. Covers hand-held machines that drill holes in various materials through rotation and impact. ---Part 6.Compaction machine. Covers hand-held machines for foundry sand compaction or stamping operations. ---Part 7.Punching machine and scissors. Covers hand-held machines for cutting sheet metal and composite materials. ---Part 8.Reciprocating saws, polishing machines and files, and pendulum or rotary saws. Covers the table with a file or polishing tool installed Hand-held machines for surface trimming, hand-held machines for sawing boards, medical plaster or wood, or Hand-held machines for saw blades of various materials, as well as hand-held machines for cutting metal and composite materials. ---Part 9.Derusting hammer and needle beam derusting device. Covers the use of reciprocating working tools or needle bundles to remove oil from various materials Hand-held machines with lacquer, rust spots or oxide skin. ---Part 10.Impact rock drills, hammers and breakers. Covers hand-held rotation for drilling holes in hard materials such as rock and concrete Impact machine. ---Part 11.Stone Hammer. Covers stone hammer type hand-held machines, which are usually pneumatic straight-handled machines. ---Part 12.Mold grinder. Covered by hard alloy burr knife or grinding head mounted on the chuck in hard steel/plastic, etc. Material, a hand-held machine for trimming operations. ---Part 13.Fastener drive tools. Covers handheld machines for fastener drive. This document is a Type C standard specified in ISO 12100. For machines designed and manufactured in accordance with the requirements of Type C standards, when the requirements of Type C standards are different from those in Type A or Type B standards At this time, the requirements in the C-type standards are better than those in other types of standards. GB/T 25631 gives general technical conditions for handheld and hand-guided mechanical vibration radiation measurement, GB/T 26548 (all parts Points) Based on this standard, the vibration test method of hand-held portable machines is given, and the operating conditions of the machine under the type test conditions are specified. Parts and other requirements for type test performance. The standard structure and chapter numbering are consistent with GB/T 25631. This document adopts the basic sensor positioning method first adopted in the European series of standards EN60745. The description is inconsistent with GB/T 25631.The sensor is preferably placed in the area between the thumb and index finger near the hand, because this position is right. The operator has minimal interference when holding the machine. Generally, the vibration generated by files and saws varies greatly during use. For reciprocating saws and files, the main source of vibration is reciprocating movement, vibration The large changes are caused by changes in the operation of the machine and the characteristics of the materials being processed. At the same time, the difference in material support and machine balance can also cause vibration. The difference in movement. The test procedure used in this document is to machine sawing steel plates and wood. In order to achieve better reproducibility of measurement results, the processed material The stable support and the good condition of the file and saw blade are very important. GB/T 14790 is adopted for the assessment of vibration exposure in the workplace (All parts) of the program. The value obtained is the type test value, which is used to represent the average value of the upper quartile of the typical vibration of the machine in actual use. However, Actual values sometimes vary greatly, depending on many factors, including the operator, work tasks, and insertion tools or consumables. The machine itself The maintenance status may also be important. The influence of operators and operating procedures on low-amplitude vibration is particularly important in real working conditions. because Therefore, the vibration radiation value below 2.5m/s2 is not recommended for evaluation under real working conditions. In this case, it is recommended to use 2.5m/s2 vibration Momentum value is used to directly evaluate the vibration of the machine. If precise values are required in a specific workplace, it is necessary to perform the calculation in accordance with the provisions of GB/T 14790 (all parts) under this working condition. Line measurement. The measured vibration value under actual working conditions may be higher or lower than the value obtained with this document. Vibration test method for handheld portable power tools Part 8.Reciprocating saws, polishers and files And swing or rotary saws1 ScopeThis document specifies hand-held power-driven reciprocating saws, polishers and files, as well as hand-transmitted vibration measurements on the handles of pendulum or rotary saws. The quantitative test method determines the type inspection procedure for the vibration level of the handle grip when operating the machine under the specified test conditions. Its test The result is used to compare the vibration of the same type and different models of machines. This document applies to compressed air or other power-driven reciprocating files equipped with files and polishing tools for surface trimming. Saws for sawing boards, medical plaster or wood, or saws equipped with saw blades suitable for sawing various materials, and mainly used for cutting gold Small disc saws for genus and composite materials (see Chapter 5). This document does not apply to files that are usually placed on a file cutter with one hand, nor to large disc saws that are used to cut wood. Note. To avoid confusion between "power tools" and "insertion tools", "machines" are used instead of "power tools" throughout this document.2 Normative referencesThe contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. ISO 2787 Rotary and impact pneumatic tools performance test (Rotaryandpercussivepneumatictools-Perform- ancetests) ISO 5349 (all parts) Mechanical vibration Measurement and evaluation of human body exposure to hand-borne vibration (Mechanicalvibration- Measurementandevaluationofhumanexposuretohand-transmittedvibration) ISO 5391 Pneumatic tools and machines-Vocabulary ISO 16893-1 Wood-based panels-Particleboard-Classifi- cations) ISO 17066 Hydraulic Tool-Vocabulary (Hydraulictool-Vocabulary) ISO 20643.2005 Mechanical vibration Hand-held and hand-guided mechanical vibration evaluation rules (Mechanicalvibration- Hand-heldandhand-guidedmachinery-Principlesforevaluationofvibrationemission) EN12096 Marking and verification of mechanical vibration vibration radiation value (Mechanicalvibration-Declaration and Verifica- tionofvibrationemissionvalues) 3 Terms, definitions and symbols The following terms, definitions and symbols defined by ISO 5391, ISO 17066, and ISO 20643 apply to this document. 3.1 Terms and definitions 3.1.1 Circular saw circularsaw Machine equipped with disc-shaped saw blades. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 26548.8-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 26548.8-2021_English as soon as possible, and keep you informed of the progress. 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