ASME Y14.5M-1994(美标)中英文双语解释(CHS-EN)

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Statistical tolerancing may be applied to features to increase tolerances and reduce manufacturing cost. To ensure compatibility, the larger tolerance identified by the statistical tolerance symbol may only be used where appropriate statistical process control will be used. A note such as the one shown below shall be placed on the drawing. /㒳䅵݀Ꮒৃ㛑ᑨ⫼ࠄ⡍ᕕϞˈ⫼ҹ๲ࡴ݀Ꮒ੠‫ޣ‬ᇣࡴᎹ䌍⫼DŽЎֱ䆕‫ݐ‬ᆍᗻˈ 㹿㒳䅵݀Ꮒ⹂ᅮⱘ䕗໻݀ Ꮒৃ㛑া⫼ѢՓ⫼䗖ᔧⱘ㒳䅵Ꮉ㡎᥻ࠊⱘഄᮍDŽ‫ڣ‬ϟ䴶᠔冫ⱘ⊼䞞ᇚ㹿ᬒ㕂ࠄᎹ⿟೒ϞDŽ
NONE
DIMENSION NOT TO SCALE ሎᇌ≵ᣝ↨՟ ARC LENGTH/೚ᓻ䭓ᑺ X BETWEEN/೼ϸ㗙П䯈 SLOPE/᭰䴶
NONE
CONICAL TAPER/䫹ᔶ
ENVELOPE PRINCIPLE ࣙ㒰㒓ॳ⧚
NONE(implied)/˄ᱫᣛ˅ Note: * May be filled or not filled/⊼˖*ৃ㛑฿ᅲгৃ㛑ϡ฿ᅲ
NONE/ҔМг≵᳝
㒳䅵݀Ꮒ
X RADIUS/ञᕘ
R
R
X CONTROLLED RADIUS /㑺ᴳञᕘ
CR
NONE/ҔМг≵᳝
SPHERICAL RADIUS/⧗ञᕘ
SR
SR
BASIC DIMENSION/෎ᴀሎᇌ
(theoretically exact dimension in ISO)
˄ISO Ё⧚䆎Ϟ㊒⹂ⱘሎᇌ˅
3
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Note:/⊼˖
FEATURES IDENTIFIED AS STATISTICALLY TOLERANCED
SBaidu NhomakorabeaALL BE PRODUCED WITH
STATISTICAL PROCESS CONTROLS, OR TO THE MORE RESTRICTIVE ARITHMETIC LIMITS.
REGARDLESS OF FEATURE SIZE
NONE/ҔМг≵᳝
NONE/ҔМг≵᳝
ᗑ㾚⡍ᕕሎᇌ
PROJECTED TOLERANCE ZONE
ᡩᕅ݀Ꮒᏺ
X FREE STATE/㞾⬅⢊ᗕ
X TANGENT PLANE Ⳍߛ䴶
(Proposed)˄㹿ᦤ䆂ⱘ˅
X STATISTICAL TOLERANCE
/ҹ㒳䅵݀Ꮒ
䆚߿ⱘ⡍ᕕᇚ೼㒳䅵ᄺᎹ㡎᥻ࠊϟ⫳ѻˈ៪㗙Ⳉࠄফ᳈ϹḐⱘㅫ⊩㑺ᴳЎℶDŽ
In some cases, it may be desirable to state only the statistical tolerance and the arithmetic number will not be shown. In this case, a note such as the following must be placed on the drawing. /ᶤѯᚙ‫މ‬ϟˈৃҹা㾘ᅮ㒳䅵݀Ꮒˈ㗠ϡᰒ冫ㅫᴃ᭄ᄫDŽ䖭辵ᚙ‫މ‬ϟˈ‫ڣ‬ϟ䴶᠔冫ⱘ⊼䞞ᖙ乏ᬒ೼Ꮉ⿟೒ ЁDŽ
1982 standard.
/ҹϟᰒ冫ⱘᰃ᳔䗮⫼ⱘヺোˈ೼Ꮉ⿟೒Ёˈᅗ੠޴ԩ݀Ꮒঞ݊ᅗⳌ݇ⱘሎᇌ㽕∖㘨ড়Փ⫼DŽϟ㸼ৠᯊ߫ߎ
ISO ᷛ‫ޚ‬ЁⳌᑨⱘヺোDŽ㒱໻䚼ߚヺো㸼冫ᰃϔḋⱘDŽϔᇥ䚼ߚ ASME Y 14.5, 1994 ᷛ‫ޚ‬⣀᳝ⱘヺোˈℷ
㹿ᦤ䆂⫼Ѣ ISO ᷛ‫ޚ‬DŽᷛ䆄ⴔ“x”ⱘヺোᰃᮄⱘ៪㗙ᰃ⬅ҹࠡⱘ Y14.5M, 1982 ᷛ‫ׂޚ‬䅶ⱘDŽ
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COMMON SYMBOLS/䗮⫼ヺো
Shown below are the most common symbols that are used with geometric tolerancing and other related dimensional requirements on engineering drawings. Note the comparison with the ISO standards. Most of the
X DATUM FEATURE
෎‫ޚ‬⡍ᕕ
*
*
DATUM TARGET
෎‫Ⳃޚ‬ᷛ
TARGET POINT/෎‫⚍ޚ‬
DIMENSION ORIGIN
ሎᇌॳ⚍
REFERENCE DIMENDION/খ㗗ሎᇌ
( 50 )
( 50 )
(Auxiliary dimension in ISO) /ISO Ё䕙ࡽⱘሎᇌ
1
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NUMBER OF PLACES /໘᭄
8x
8x
COUNTERBORE/SPOTFACE
䬫≝༈ᄨ/ᄨষᑇ䴶
COUNTERSINK/䪏≝༈ᄨ
DEPTH/DEEP/⏅ᑺ
SQUARE/ℷᮍᔶ
ALL AROUND/਼ܼ
NONRIGID PARTS-FREE STATE CONDITION/䴲߮ᗻ䳊ӊ - 㞾⬅⢊ᗕᴵӊ
Unless otherwise specified, all dimensioning and tolerancing applies in a Free State condition with no restraint. Some parts, such as sheet metal, thin metal, plastics and rubber are no rigid in nature. It may be necessary to specify design requirements on the part in a natural or Free State as well as in a restrained condition. The restraint or force on the nonrigid parts is usually applied in such a manner to resemble or approximate the functional or mating requirements. /䰸䴲⡍߿ᣛᅮˈ᠔᳝ሎᇌᷛ⊼੠݀Ꮒᷛ⊼⫼Ѣ≵᳝䰤ࠊⱘ㞾⬅⢊ᗕDŽϔѯ䳊ӊˈ䇌བ䩷䞥ӊˈ㭘䞥ሲӊˈ ล᭭ӊ੠‵㛊㞾✊⢊ᗕϡᰃ߮ᗻⱘDŽ೼䳊ӊⱘ㞾✊⢊ᗕ៪㗙㞾⬅⢊ᗕҹঞফ䰤ࠊⱘᴵӊϟᣛᅮ䆒䅵䳔∖ৃ 㛑ᰃᖙ䳔ⱘDŽᇍ䴲߮ᗻ䳊ӊⱘ䰤ࠊ៪ᕅડ࡯䗮ᐌҹ䖭ḋⱘᮍᓣ䖒ࠄⳌ‫៪ڣ‬䖥Ԑࡳ㛑៪ऍ䜡ⱘ䳔∖DŽ
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STATISTICAL TOLERANCING SYMBOL/㒳䅵݀Ꮒヺো
Often, tolerances are calculated on an arithmetic basis. Tolerances are assigned to individual features on a component by dividing the total assembly tolerance by the number of components and assigning a portion of this tolerance to each component. When tolerances are stacked up in this manner, the tolerance may become very restrictive or tight. /݀Ꮒ㒣ᐌ෎Ѣㅫᴃ෎⸔ᴹ䅵ㅫDŽ䗮䖛ḍ᥂䚼ӊⱘ᭄䞣ᡞᘏⱘ㺙䜡݀Ꮒߚߦˈᑊᡞϔ䚼ߚ݀Ꮒᣛᅮ㒭↣ϔ䚼 ӊⱘᮍᓣˈ݀Ꮒ㹿ᣛᅮ㒭䚼ӊⱘϾ߿⡍ᕕDŽᔧ݀Ꮒҹ䖭辵ᮍᓣේ঴ᯊˈ݀Ꮒৃ㛑বᕫ䴲ᐌফ䰤ࠊ៪㗙㋻ᆚDŽ
FEATURES IDENTIFIED AS STATISTICALLY TOLERANCED STATISTICAL PROCESS CONTROLS.
SHALL BE PRODUCED WITH
/ҹ㒳䅵݀Ꮒ
䆚߿ⱘ⡍ᕕᇚ೼㒳䅵ᄺᎹ㡎᥻ࠊϟ⫳ѻDŽ
For additional information on statistical tolerancing, see appropriate statistics or engineering design manuals. /ᇍѢ㒳䅵݀Ꮒᷛ⊼Ёⱘ乱໪ֵᙃˈ 䇋খ㾕䗖ᔧⱘ㒳䅵ᄺ៪Ꮉ⿟ᄺ䆒䅵᠟‫ݠ‬DŽ
RADIUS, CONTROLLED RADIUS/ञᕘˈ㑺ᴳञᕘ
There are two types of radii tolerance that can be applied, the radius and controlled radius. The radius (R) tolerance is for general applications. The controlled radius (CR) is used when it is necessary to place further restrictions on the shape of the radius, as in high stress applications. /᳝ϸ辵㉏ൟञᕘ݀Ꮒ㛑㹿ᑨ⫼˖ञᕘ੠㑺ᴳञᕘDŽञᕘ˄R˅݀Ꮒᰃ䗮⫼ⱘDŽ㗠㑺ᴳञᕘ(CR)߭⫼Ѣ䳔㽕 ᇍञᕘⱘᔶ⢊԰䖯ϔℹⱘ㑺ᴳᯊˈ԰Ўϔ辵催ᑨ࡯ⱘᑨ⫼DŽ
SYMBOL˄ヺো˅
ASME Y14.5M
ISO
FEATURE CONTROL FRAME
݀ᏂḚḐ
DIAMETER/Ⳉᕘ
SPHERICAL DIAMETER/⧗Ⳉᕘ
AT MAXIMUM MATERIAL CONDITION
᳔໻ᅲԧᴵӊ
AT LEAST MATERIAL CONDITION
᳔ᇣᅲԧᴵӊ
Statistical tolerancing is the assignment of tolerances to related components of an assembly on the basis of sound statistics. An example is: the assembly tolerance is equal to the square root of the sum of the squares of the individual tolerances. /㒳䅵݀Ꮒᷛ⊼ᰃ೼ড়⧚ⱘ㒳䅵ᄺ෎⸔ϞˈᇍⳌ݇㺙䜡䚼ӊⱘ݀Ꮒߚ䜡DŽ՟བ˖㺙䜡݀ᏂㄝѢऩϾⱘ݀Ꮒᑇ ᮍⱘ੠ⱘᑇᮍḍDŽ
symbology is identical. There are a few symbols that are used in the ASME Y 14.5, 1994 standard that are being
proposed for the ISO standards. The symbols marked with an “x”are new or revised from the previous Y14.5M,
Note: This is a change from the previous editions of the Y14.5 standard. The definition of the tolerance zone for the former term tangent radius, previously noted by the symbol R, is now meant to apply to a controlled radius (symbol CR). /⊼˖䖭ϾᰃҢ Y14.5 ᷛ‫ޚ‬ҹࠡⱘ⠜ᴀᬍব㗠ᴹⱘDŽ‫ⱘࠡܜ‬ᴃ䇁Ⳍߛञᕘⱘ݀ᏂᏺᅮНˈҹࠡ⫼ヺো R 㸼 冫ˈ⦄೼⫼㑺ᴳञᕘ˄ヺো CR˅㸼冫DŽ
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