>> P.287
Ⅱ-237-AccuracyClass-Table3Toleranceandallowanceunit:mmClass(classificationsymbol)ItemHighPrecisionSuperprecision(H)(P)(SP)Dim.Htolerance±0.040±0.020±0.010Dim.Wtolerance±0.050±0.025±0.015Dim.variationofH(1)0.0150.0070.005Dim.variationofW(1)0.0200.0100.007TrackrailparallelismΔHSeeFig.1.1andFig.1.2TrackrailparallelismΔWSeeFig.1.1andFig.1.2Note(1)Itmeansthesizevariationbetweenslidemembersmountedonthesametrackrail.BHAWBAΔW/LΔH/LFig.1.1TrackrailparallelismforLWLM0510150200600400800LengthoftrackrailLmm0510150200400600800LengthoftrackrailLmmPrecision(P)Superprecision(SP)High(H)High(H),precision(P)Superprecision(SP)Parallelism⊿HμmParallelism⊿Wμm(a)parallelism⊿H(b)parallelism⊿WFig.1.2TrackrailparallelismforLRWM0102030400100020003000LengthoftrackrailLmm0102030400100020003000LengthoftrackrailLmmPrecision(P)Superprecision(SP)High(H)High(H),precision(P)Superprecision(SP)Parallelism⊿HμmParallelism⊿Wμm(a)parallelism⊿H(b)parallelism⊿WHighPrecisionSuperprecision:H:P:SPFordetailsofaccuracyclass,seeTable3.Accuracyclass5
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