GB/T 17421.4-2016 English PDF

US$394.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 17421.4-2016: Test code for machine tools -- Part 4: Circular tests for numerically controlled machine tools
Status: Valid

GB/T 17421.4: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17421.4-2016	394	Add to Cart	4 days	Test code for machine tools -- Part 4: Circular tests for numerically controlled machine tools	Valid
GB/T 17421.4-2003	599	Add to Cart	3 days	Test code for machine tools -- Part 4: Circular tests for numerically controlled machine tools	Obsolete

Similar standards

GB/T 24343   GB/T 24344   GB 15760   GB/T 17421.2   GB/T 17421.1   GB/T 17421.10   

Basic data

Standard ID: GB/T 17421.4-2016 (GB/T17421.4-2016)
Description (Translated English): Test code for machine tools -- Part 4: Circular tests for numerically controlled machine tools
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J50
Classification of International Standard: 25.040.20
Word Count Estimation: 20,246
Date of Issue: 4/25/2016
Date of Implementation: 2016-11-01
Older Standard (superseded by this standard): GB/T 17421.4-2003
Quoted Standard: ISO 230-1-1996
Adopted Standard: ISO 230-4-2005, IDT
Regulation (derived from): National Standard Announcement No
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

GB/T 17421.4-2016: Test code for machine tools -- Part 4: Circular tests for numerically controlled machine tools

---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.
Test code for machine tools - Part 4. Circular tests for numerically controlled machine tools ICS 25.040.20 J50 National Standards of People's Republic of China Replacing GB/T 17421.4-2003 General rules of machine tools inspection Part 4. Circle inspection of CNC machine tools Part 4.Circulartestsfornumericalycontroledmachinetools (ISO 230-4.2005, IDT) Posted on.2016-04-25 2016-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 17421 "General Rules for Machine Inspection" is divided into 11 parts. --- Part 1. The geometric accuracy of the machine tool under no load or finishing conditions; --- Part 2. CNC axis positioning accuracy and repeat positioning accuracy of the determination; --- Part 3. Determination of thermal effects; --- Part 4. CNC machine circular test; --- Part 5. Determination of noise emission; --- Part 6. Determination of body and face diagonal position accuracy (diagonal displacement test); --- Part 7. Geometrical accuracy test of rotary axis; --- Part 8. Vibration (Technical Report); --- Part 9. GB/T 17421 Machine Tool Testing series of standards to estimate the basic equations of uncertainty (Technical Report); --- Part 10. Determination of CNC machine tool measurement performance; --- Part 11. Measuring instruments for the inspection of geometrical accuracy of machine tools (Technical Report). This section GB/T 17421 Part 4. This section drafted in accordance with GB/T 1.1-2009 given rules. Our documents that have a consistent correspondence with the normative references in this section are as follows. --- GB/T 17421.1-1998 General Rules for Machine Inspection Part 1. Geometric accuracy of the machine under no load or finishing conditions (eqvISO 230-1.1996) This section replaces GB/T 17421.4-2003, compared with the GB/T 17421.4-2003, the contents of the following changes. --- 3.3 with two-way circle deviation G (b) instead of the hysteresis H, because with the general measurement tool is difficult to assess the hysteresis H, while the two-way Circular deviation G (b) contains similar information; --- Chapter 3 increased the average bi-directional radius deviation D terms and definitions; --- 4.6 adds the uncertainty of measurement and testing; --- Added parameters G (b) and D in Appendix A; --- Added Appendix D "Circular Test Using Feedback Signals". This section uses the translation method identical with ISO 230-4.2005 "General Rules for Machine Inspection Part 4. CNC machine circular test." This part is proposed by China Machinery Industry Federation. This part of the National Standardization Technical Committee metal cutting machine (SAC/TC22) centralized. This part of the drafting unit. Beijing Beiyi Machine Tool Co., Ltd., National Machine Tool Quality Supervision and Inspection Center, Sichuan Changzheng Machine Tool Group has Limited company. The main drafters of this section. Hu Ruilin, Wang Yu, Zhang Wei, Li Xiangwen, Li Shulin, Chen Yan Yan, Wang Xiaohui. This part replaces the standards previously issued as. --- GB/T 17421.4-2003. General rules of machine tools inspection Part 4. Circle inspection of CNC machine tools

1 Scope

GB/T 17421 provisions of this part of the two linear axis linkage circular trajectory generated two-way circle deviation, the average bi-directional radius deviation Difference, circle deviation and radius deviation of the test and assessment methods. The relevant inspection tools are described in 6.6.3 of ISO 230-1.1996. The purpose of this section is to provide a method of testing the contour characteristics of CNC machine tools.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. ISO 230-1-1996 General rules of machine tool inspection - Part 1. Geometric accuracy of machine tools under no load or finishing conditions

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Nominal path nominalpath CNC programming of the circular path, which by the diameter (or radius), the location of the center and the direction of the machine's work area to define, either A full circle, it can be a part of a circle of not less than 90 °. 3.2 The actual path actualpath The path generated by the machine when moving by the programmed nominal path. 3.3 Bi-directional circular deviation bi-directionalcirculardeviation G (b) Including the two actual trajectory of the two concentric circles (minimum area circle) the minimum radius difference, a trajectory for the clockwise contour movement, and the other Counter-clockwise contour movement, see Figure 1. Note 1. Bi-directional circle deviation G (b) can also be assessed using the maximum radius deviation range based on the least squares radius. Least Square Radius calculation is based on 2 Track, that is, clockwise and counterclockwise trajectory. Note 2. Bi-directional circle deviation G (b) does not include the installation error, ie, the centering error of the inspection tool. Note 3. The measurement of bi-directional misalignment G (b) requires only calibration of the displacement of the test equipment (no need to calibrate the length of the test equipment for determining the diameter of the track quasi). The measurement of radius deviation F and average bi-directional radius deviation D requires the use of a test tool with a calibrated length and a calibrated displacement (see Appendix A). Note 4. When all points on a line in a plane are contained between two concentric circles whose radius deviation does not exceed a given value, the line is considered as a circle (See Figure 2 and 6.6.1 in ISO 230-1.1996). Note 5. G (b) is measured by an external measuring device as described in 6.6.3 of ISO 230-1.1996. Circular test using feedback signal The result is called "Bi-directional circle deviation G (b) f" using the feedback signal. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 17421.4-2016_English be delivered?

Answer: Upon your order, we will start to translate GB/T 17421.4-2016_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 GB/T 17421.4-2016_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 17421.4-2016_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 GB/T 17421.4-2016?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 17421.4-2016 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.