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JJG 938-2012 English PDF

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Q: Should I purchase the latest version JJG 938-2012?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 938-2012 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$509.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 938-2012: Verification Regulation of Tool Presetling and Measuring Instrument
Status: Valid

JJG 938: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 938-2012	509	Add to Cart	4 days	Verification Regulation of Tool Presetling and Measuring Instrument	Valid
JJG 938-1998	399	Add to Cart	3 days	Verification Regulation of the Tool Presetting Instrument	Obsolete

Similar standards

JJG 818 JJG 1114 JJF 1126 JJG 658 JJG 741 JJG 601

Basic data

Standard ID: JJG 938-2012 (JJG938-2012)
Description (Translated English): Verification Regulation of Tool Presetling and Measuring Instrument
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Classification of International Standard: 17.040
Word Count Estimation: 22,215
Older Standard (superseded by this standard): JJG 938-1998
Quoted Standard: GB/T 22096-2008
Regulation (derived from): AQSIQ Announcement No. 45 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to measuring range (0 ~ 1000) mm for tool presetting meter initial verification, testing and use of follow-up checks.

JJG 938-2012: Verification Regulation of Tool Presetling and Measuring Instrument

---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.
Verification Regulation of Tool Presetling and Measuring Instrument State verification procedures People's Republic of China Tool presetting measuring instrument Issued on. 2012-03-20 2012-09-20 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Tool presetting measuring instrument verification regulation Instruments Replacing JJG 938-1998 NFP. National Engineering Geometrical Parameters Measurement Technology Committee Main drafting unit. Heilongjiang Provincial Academy of verification test Harbin Measuring & Cutting Tool Group Co., Ltd. Participated in the drafting unit. Harbin first tool Manufacturing Co., Ltd. This procedure works commissioned by the National geometric parameter measurement technology committee responsible for the interpretation The main drafters of this procedure. Zhou Zhiqiang (Heilongjiang Provincial Academy of verification test) Dong Yuwen (Harbin Measuring & Cutting Tool Group Co., Ltd.) Han Zhengyang (Heilongjiang Provincial Academy of verification test) Drafters participate. Sun wake up every (Harbin first tool Manufacturing Co., Ltd.) Qi-yong of (Heilongjiang Provincial Academy of verification test)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Overview (1) 4 metering performance requirements (1) Projection magnification 4.1 (1) 4.2 test rods and spindle taper taper shape error and error (2) 4.3 axial movement of the spindle (2) 4.4 Spindle radial runout (2) 4.5 sighting device parallel with the axial movement of the spindle (2) 4.6 degree vertical aiming device along the radial motion of the spindle (2) 4.7 Measurement repeatability (2) 4.8 Indication error (2) 5 General technical requirements (3) 5.1 Appearance (3) 5.2 Interaction of each part (3) 5.3 mass imaging optical system (3) 5.4 two reticle superposition (3) The relative position of the spindle and the object plane of the projection system 5.5 (3) 6 Control of measuring instruments (3) 6.1 Verification condition (3) 6.2 Verification Project (4) 6.3 Verification Methods (4) Processing 6.4 Verification Results (7) 6.5 test cycle (7) Appendix A tool presetting measurement uncertainty of measurement instrument indication error of assessment (8) Appendix B test mandrel and the test disc (10) Appendix C calibration certificate/test results in the notice page and format (12)

Introduction

JJF1002-2010 "national verification procedures write rules", JJF1001-2011 "common terminology and measurement Definitions ", JJF1059-1999" Evaluation and Expression of Uncertainty in Measurement ", JJG 938-1998" measuring tool presetting Instrument "(hereinafter referred to as" the original Regulations ") together constitute the basic norms of the present series of regulations revision. This regulation, the term modified according to GB/T 22096-2008 "tool presetting measuring instrument" Terminology and unity. This procedure is revised on the basis of the original procedure. Compared with the original regulations, in addition to editorial changes, the main technical change Of the following. --- According to GB/T 22096-2008 "tool presetting measuring instrument", the new increase precision, ordinary type and Jane Yi-based technical requirements. --- Remove the spindle taper and test rods taper shape error and error in the technical parameters and form. --- According to GB/T 22096-2008 "tool presetting measuring instrument" on the sighting device along the radial motion of the spindle Squareness measurement repeatability and other technical requirements adopted tabular representation. --- According to GB/T 22096-2008 "tool presetting measuring instrument", the spindle radial runout, aiming device Parallel to the direction of axial movement of the spindle, showing error such as the use of the formula. --- Amendments to the original protocol section of the metering apparatus name, "the relative position of the object plane of the projection system and the spindle," "Lord Shaft axial movement, "" radial shaft runout "project" Calibration stick "to" mandrel test "," aiming device axis In the direction of movement of the spindle parallelism "project" test stick "to" mandrel test "," aiming device radially Vertical movement of the spindle of the "project" dedicated gage "to" test disc, "" measurement repeatability "project The "Calibration stick" to "test rods." --- According to GB/T 22096-2008 "tool presetting measuring instrument" to delete the original statutes "slide axially transport Moving pendulum angle "and" radial angle skateboarding pendulum, "the two test projects. Tool presetting measuring instrument verification regulation

1 Scope

The order applies to the measurement range (0 ~ 1000) mm tool presetting measuring instrument (hereinafter referred to as "knife adjustment Instrument ") of the initial verification, use and subsequent verification check. 2. References This procedure references the following documents. GB/T 22096-2008 tool presetting measuring instrument For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 Overview

Presetter mainly used in CNC machine tools, machining centers and flexible manufacturing cell used in the cutting edge of the radial and axial Size measurement. Presetter into precision type, ordinary type and Simple. Presetter is shown in Figure 1. Figure 1 schematic presetter 1- base; 2- radial slide; 3- column; 4- slide axially; 5- display device; 6- sighting device; 7- test mandrel; 8- spindle

4 metering performance requirements

4.1 projection magnification ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJG 938-2012_English be delivered?

Answer: Upon your order, we will start to translate JJG 938-2012_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJG 938-2012_English with my colleagues?

Answer: Yes. The purchased PDF of JJG 938-2012_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. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version JJG 938-2012?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version JJG 938-2012 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.