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GB/T 39967-20215-axis simultaneous machining center—Accuracy of S-shaped test piece (English PDF)

五轴联动加工中心 S形试件精度检验

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

March 9, 2021

Implementation date

October 1, 2021

Scope

GB/T 39967-2021 is the English-translated version of 五轴联动加工中心 S形试件精度检验.

GB/T 39967-2021 describes the S-shaped test piece used to check the accuracy of five-axis simultaneous machining centres.

It defines the geometry of the test piece, starting from the ruled surface on which it is built, and the blank from which it is cut, then sets out how the piece is machined, how it is inspected and what the inspection report must contain.

An informative annex supplies the STEP model file of the S-shaped test piece, and clause 2 cites GB/T 11336-2004 on straightness error detection. The standard applies to five-axis machining centres able to produce the S-shaped piece by side milling of curved surfaces with five-axis simultaneous motion. It was issued on 9 March 2021 and has applied since 1 October 2021.

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Document preview — GB/T 39967-2021

National Standard of the People's Republic of China

ICS: 25.040.10
Classification: J 50

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Specimen geometry definition
5 Definition of blank
6 Processing
7 Inspection
8 Inspection report
Appendix A (informative appendix) S-shaped specimen STEP model file
References

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the geometric definition, blank definition, processing, inspection and inspection report of the S-shaped specimen of the five-axis machining center.

This standard applies to five-axis linkage machining centers that can process S-shaped specimens by side milling of curved surfaces through five-axis linkage.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 11336-2004 Straightness error detection

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Ruled surface

A curved surface formed by a cluster of straight line segments.

Note: The ruled surface is shown in Figure 1, and its parameter equation is shown in equation (1).

C0(u), C1(u)---defined space curve in the same parameter interval u(0,1); u,nu ---u-direction and nu-direction parameters;

S(u,nu) ---The curved surface formed by moving the generatrix on the curves C0(u) and C1(u); P0, P1 --- bus terminal;

K0,K1 ---The normal vector of the surface S(u,nu) at P0 and P1.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 46 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 11336-2004Measurement of departures from straightness

Cited by

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