GB/T 9166-2009Four-column hydraulic press - Testing of the accuracy (English PDF)

Foreword

This standard and Japan JISB6403-1994 "hydraulic machine accuracy inspection" of non-equivalent.

This standard replaces GB/T 9166-1988 "hydraulic machine precision." This standard compared with GB/T 9166-1988, the main contents of the following.

--- Increasing the normative references a chapter;

--- Modify the accuracy of testing methods. The standard proposed by China Machinery Industry Federation.

1 Scope

This standard specifies the accuracy of the test items hydraulic machine, testing tools, precision tolerance values and precision test methods.

This standard applies to general-purpose hydraulic machine.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequently Some amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 6092-2004 Squares

GB/T 10923 Forging Machinery General accuracy test

GB/T 16455-2008 batten and square levels

JB/T 7977-1999 cast iron flat feet

3 General requirements

3.1 countertops is a hydraulic test machine precision datum.

3.2 accuracy test before the hydraulic machine should be adjusted to the level of its vertical and horizontal work surface to the level of deviation should not exceed 0.20/1000mm.

3.3 is equipped with movable table shall be so in the hydraulic working position and lock firmly.

3.4 hydraulic test machine accuracy should be separately carried out after idling and full load operation test, the accuracy of the measured value at full load operation after test As a basis for determining whether or not qualified.

3.7 Inspection of the actual length of the vertical hydraulic press should be more than a quarter of the maximum stroke, but not less than 100mm; hydraulic press stroke Less than 100mm measured by the maximum stroke, the slider in the start, stop and reverse running moment runout occurs when excluding.

4 Accuracy test