GB/T 29547-2013Open front high speed precision press - Testing of the accuracy (English PDF)
开式高速精密压力机 精度
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 9, 2013
Implementation date
January 1, 2014
Scope
GB/T 29547-2013 is the English-translated version of 开式高速精密压力机 精度.
GB/T 29547-2013 lays down the inspection requirements and the accuracy test for open front high speed precision presses.
Clause 1 states that it specifies the inspection requirements and the accuracy test for the open high-speed precision press and that it applies to that machine, which the rest of the text calls simply the press; the clause records no exclusion.
Clause 2 cites GB/T 8170, GB/T 10923-2009 and GB/T 11337.
Clause 3, inspection requirements, has the precision test and the inspection gauges follow Annex A and GB/T 10923, has the calculated tolerance values rounded according to GB/T 8170, requires the test to be made with the press unloaded and with the parts that affect accuracy unaltered, requires a press fitted with a balance device to be adjusted beforehand as its manual directs, makes the bench plate the datum for the precision inspection, and allows the flatness of the slider plane and the perpendicularity of the handle hole to be inspected before assembly.
Clause 4, accuracy test, begins with 4.1 on the flatness of the worktable plate plane and of the lower plane of the slider, whose 4.1.1 Test Method sets gauge blocks on three points a, b and c of the table plate to form a reference surface, determines a fourth point d from an adjustable block, and takes readings with gauge blocks or an indicator, adding that where the press has no table plate the same test is made on the bench; the draft then breaks off, so the further accuracy test items are not shown.
The standard was proposed by China Machinery Industry Federation and is kept by the National Forging Machinery Standardization Technical Committee (SAC/TC220). It carries ICS 25.120.10 and Chinese classification J62, and the page estimates about 10,131 words.
It was issued on 9 June 2013 and has applied since 1 January 2014; the page does not state which edition it replaces.
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Document preview — GB/T 29547-2013
National Standard of the People's Republic of China
- ICS
- 25.120.10
- Classification
- J 62
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Inspection requirements
- 4 Accuracy test
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Machinery Industry Federation.
1 Scope
This standard specifies the open high-speed precision press inspection requirements, accuracy test.
This standard applies to open high-speed precision press (hereinafter referred to as "press").
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 8170 repair value expressed about the rules and limit values and judgment
GB/T 10923-2009 accuracy test General Forging Machinery
GB/T 11337 flatness error detection
3 Inspection requirements
3.1 precision test and inspection gage amount shall comply with Annex A, GB/T 10923 of.
Precision tolerance value 3.2 test items shall be calculated length of the actual test, the results according to the provisions GB/T 8170 will be rounding To m digits.
3.3 accuracy test shall be at the press of a no-load state, the inspection process should not affect the accuracy of parts of the body and can be adjusted.
3.4 press having a balance device accuracy test before using the relevant provisions of the manual should be adjusted.
3.5 flat bench presses for the board to inspect the precision datum.
3.6 Flatness slider plane, the handle hole on the vertical plane of the slider allows inspection prior to assembly inspection.
4 Accuracy test
4.1 Workbench board the plane and the plane of the slider under flatness
4.1.1 Test Method
On board the plane was seized table a, b, c three points and put on a high-volume block to Block plane formed on the surface as a reference surface, through Adjustable over Block (Block group) to determine the extension of point d. The feet are flat on the a, b, c, d above any two gauge blocks and gauge block (or direction Device) distance measuring table plate plane and flat-foot test surface (Figure 1, Figure 2). The maximum error of the difference in the amount of blocks (or indicator) reading Value of the counter.
If no press table plate is on the bench for the same test.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Related Standards
GB/T 10923-2009 — Test code of accuracy for metal forming machine
GB/T 11337-2004 — Measurement of departures from flatness
GB/T 8170-2008 — Rules of rounding off for numerical values & expression and judgement of limiting values
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