GB/T 33644-2017 English PDFUS$219.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 33644-2017: NC press brake -- Testing of the accuracy Status: Valid
Basic dataStandard ID: GB/T 33644-2017 (GB/T33644-2017)Description (Translated English): NC press brake -- Testing of the accuracy Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: J62 Classification of International Standard: 25.120.10 Word Count Estimation: 11,158 Date of Issue: 2017-05-12 Date of Implementation: 2017-12-01 Quoted Standard: GB/T 817; GB/T 10923-2009 Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the inspection requirements, permissible values ??and test methods for the accuracy of CNC sheet metal bending machines. This standard applies to CNC sheet metal bending machine. GB/T 33644-2017: NC press brake -- Testing of the accuracy---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.NC press brake - Testing of the accuracy ICS 25.120.10 J62 National Standards of People's Republic of China CNC sheet metal bending machine precision 2017-05-12 released 2017-12-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released ForewordThis standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the China Machinery Industry Federation. This standard by the National Forging Machinery Standardization Technical Committee (SAC/TC220) centralized. This standard is responsible for drafting units. Jinan Casting Forging Machinery Research Institute Co., Ltd., Jiangsu Yangli Group Co., Ltd., Jiangsu Yawei Machine Tool Co., Ltd., Shanghai Ai Silier CNC Machine Tool Co., Ltd., Anhui Donghai Machine Manufacturing Co., Ltd., Tianshui Forging Machine Co., Ltd. The main drafters of this standard. Ma Liqiang, Pan Diansheng, Cao Guangrong, Shi Xianlin, Wang Lixin, Cai Liquan, Pan Zhihua. CNC sheet metal bending machine precision1 ScopeThis standard specifies the inspection requirements, permissible values and test methods for the accuracy of CNC sheet metal bending machines. This standard applies to CNC sheet metal bending machine.2 normative reference documentsThe following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170 General rules for precision testing of forging machinery GB/T3 inspection requirements3.1 General requirements 3.1.1 should be adjusted before the accuracy of the development of sheet metal bending machine level, machine leveling, in the vertical and horizontal direction should not exceed 0.20/1000. 3.1.2 Geometric accuracy, numerical control accuracy of the test should be carried out under no load conditions. 3.1.3 Accuracy testing shall be carried out after full load test. 3.1.4 In the accuracy of the test process, should not affect the accuracy of the institutions and parts to be adjusted. 3.1.5 Accuracy inspection and inspection of the amount of inspection should be consistent with the provisions of GB/T 10923. 3.1.6 When the actual measurement length is less than the specified length of the tolerance, it should be converted according to the actual measurement length, the conversion results according to GB/T 8170 repair To the number of micrometers. 3.1.7 specimen length, width limit deviation of ± 2mm, specimen thickness limit deviation of ± 0.3mm. 3.1.8 For multi-machine linkage CNC bending machine, geometric accuracy and work accuracy were tested separately. 3.2 working accuracy test conditions 3.2.1 The length of the test piece shall meet the requirements of Table 1. Table 1 units are in millimeters Length of work piece L Length of test piece l ≤.2000 L 2000 ~ 3200.2000 > 3200 ~ 5000 3000 > 5000 ~ 8000 4000 > 8000 5000 3.2.2 specimen width should be greater than 30 times the thickness of the specimen, but not less than 100mm. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 33644-2017_English be delivered?Answer: Upon your order, we will start to translate GB/T 33644-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 33644-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 33644-2017_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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