GB/T 1184-1996 PDF English
US$90.00 · In stock · Download in 9 secondsGB/T 1184-1996: Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureGB/T 1184: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 1184-1996 | English | 90 |
Add to Cart
|
0-9 seconds. Auto-delivery
|
Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications
| |
| GB 1184-1980 | English | 479 |
Add to Cart
|
4 days
|
Tolerances of form and of position--Tolerance
| Obsolete |
Excerpted PDFs (Download full copy in 9 seconds upon purchase)PDF Preview: GB/T 1184-1996
GB/T 1184-1996: Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT1184-1996
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Eqv ISO 2768-2.1989
Replacing GB 1184-80
Geometrical tolerancing - Geometrical tolerance
for features without individual tolerance indication
Issued on. DECEMBER 18, 1996
Implemented on. JULY 01, 1997
Issued by. China State Bureau of Technical Supervision
Table of Contents
Foreword... 3
ISO Foreword... 4
1 Scope... 5
2 Normative references... 5
3 Definitions... 5
4 General... 5
5 Without individual tolerance indication... 6
6 Indications on drawings... 8
7 Noted tolerance... 9
8 Rejection... 9
Annex A (informative) Concepts and explanation of geometrical tolerancing
feature without individual tolerance indications... 10
Annex B (informative) Stipulation for the noted tolerance on the drawing... 16
Foreword
This Standard is an amendment of GB 1184-80 Geometrical tolerance --
Geometrical tolerance for features without individual tolerance indications,
according to international standard ISO 2768-2.1989 General geometrical
tolerance - Part II. Geometrical tolerances for features without individual
tolerance indications. This Standard is equivalent to ISO 2768-2 technically.
This Standard is equivalent to ISO 2768-2, and at the same time, keeps the
stipulation of GB 1184 about noted tolerance value considering the
practicability of the standard as annex B; it is combining two annexes of ISO
2768-2 as one annex A.
Compared with the year-1980 standard, this Standard has significant
difference. all the listed items without individual tolerance indications,
classification of the tolerance grade AND tolerance for features without
individual tolerance indications are conforming to ISO 2768-2; so it is
completely different to the previous GB 1184-80 value system.
This Standard mainly contains definition, geometrical tolerance -- geometrical
tolerance for features without individual tolerance indications, indications on
drawings, tolerance for features without individual tolerance indications in
special occasions AND geometrical tolerance with individual tolerance
indication.
This Standard shall be implemented from July 01, 1997, at the same time, it
replaces GB 1184-80.
The Annex A and Annex B are for information only.
This Standard was proposed by Ministry of Machinery Industry of P. R. China.
This Standard shall be under the jurisdiction of National Tolerance and Fits
Standardization Technical Commission.
Drafting organization of this Standard. Mechanical Standardization Institute of
Ministry of Machinery Industry of P. R. China.
Drafters of this Standard. Zhou Zhong and Wang Kai.
ISO Foreword
ISO (the International Organization for Standardization) is a worldwide
federation of national standards bodies (ISO member bodies). The work of
preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that
committee. International organizations, govern-mental and non-governmental,
in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for approval before their acceptance as
International Standards by the ISO Council. They are approved in accordance
with ISO procedures requiring at least 75 % approval by the member bodies
voting.
International Standard ISO 2768-2 was drafted by Technical Committee
ISO/TC 3, Limits and fits.
This first edition of ISO 2768-2, together with ISO 2768-1, cancels and
replaces ISO 2768.1973.
ISO 2768 consists of the following parts, under the general title General
tolerances.
- Part 1.Tolerances for linear and angular dimensions without individual
tolerance indications
- Part 2.Geometrical tolerances for features without individual tolerance
indications
Annexes A and B of this Standard of ISO 2768 are for information only.
National Standard of the People’s Republic of China
Geometrical tolerancing - Geometrical tolerance GB/T 1184-1996
for features without individual tolerance indication eqv ISO 2768-2.1989
Replacing GB 1184-80
1 Scope
This Standard mainly applies to features which are produced by removal of
material. Its application to features manufactured by other processes is
possible; however, special examination is required to ascertain whether the
customary workshop accuracy lies within the without individual tolerance
indications specified in this Standard.
2 Normative references
The following standards contain the provisions which, through the reference in
this text, constitute the provisions of this Standard. At the time of publication,
the editions indicated were valid. All standards are subject to revision, and
parties to agreements based on this Standard are encouraged to investigate
the possibility of applying the most recent editions of the standards indicated
below.
GB/T 1182-1996 Geometrical tolerancing - Generalities, definitions, symbols,
indications on drawings
GB/T 1804-92 General tolerances - Tolerances for linear dimensions without
individual tolerance indications
GB/T 4249-1996 Tolerancing principle
3 Definitions
For the purposes of this Standard, the definitions for geometrical tolerances
given in GB/T 1182 apply.
4 General
When selecting the tolerance class, the respective customary workshop
accuracy has to be taken into consideration. If smaller geometrical tolerances
are required or larger geometrical tolerances are permissible and more
economical for any individual feature, such tolerances should be indicated
directly in accordance with GB/T 1182.
5 Without individual tolerance indication
5.1 Geometrical tolerances for features without individual tolerance indications
5.1.1 Straightness and flatness
The without individual tolerance indications on straightness and flatness are
given in Table 1.When a tolerance is selected from Table 1, it shall be based,
in the case of straightness, on the length of the corresponding line and, in the
case of flatness, on the longer lateral length of the surface, or the diameter of
the circular surface.
5.1.2 Circularity
The without individual tolerance indications on circularity are equal to the
numerical value of the diameter tolerance, but in no case shall it be greater
than the respective tolerance value for circular radial run-out given in Table 4
(see figure A.2 in Annex A (for reference)).
5.1.3 Cylindricity
The without individual tolerance indications on cylindricity are not specified.
5.2 Without individual tolerance indications of geometric tolerance
5.2.1 Parallelism
The without individual tolerance indication on parallelism is equal to the
numerical value of the size tolerance or the flatness/straightness tolerance,
whichever is the greater.
5.2.2 Perpendicularity
The without individual tolerance indications on perpendicularity are given in
Table 2.The longer of the two sides forming the right angle shall be taken as
the datum; if the sides are of equal nominal length, either may be taken as the
datum.
5.2.3 Symmetry
The without individual tolerance indications on symmetry are given in Table 3.
The longer of the two features shall be taken as the datum; if the features are
of equal nominal length, either may be taken as the datum.
5.2.4 Coaxiality
Without individual tolerance indications on coaxiality are not specified.
Coaxiality tolerance can be equal to the radial circular run out tolerance
stipulated in Table 4 at limit conditions. Select the longer one as reference from
these two features; if the length of these two features are same, select anyone
as reference.
5.2.5 Circular run-out
The without individual tolerance indications on circular run-out (radial, axial
and any surface of revolution) are given in Table 4.
Annex A
(informative)
Concepts and explanation of geometrical tolerancing feature
without individual tolerance indications
A.1 Concepts and marking behind without individual tolerance indications of
geometrical tolerance
The unnoted tolerance which conform to factory normal accuracy grade need
not marked on the drawing; some feature required by the function reason
smaller than “unnoted tolerance” is not belonging to the unnoted tolerance
category, it should be noted according to the stipulation of GB/T 1182; If the
function requirements allows the tolerance bigger than unnoted tolerance, and
this bigger tolerance can bring economic benefit to the factory, this bigger
geometrical tolerance should be noted on the feature separately. For example,
metal thin wall part, flexible material part (like rubber part and plastic part) etc.
A.2 Above a certain tolerance value, which corresponds to the customary
workshop accuracy, there is usually no gain in manufacturing economy by
enlarging the tolerance.
A.3 Using without individual tolerance indications leads to the following
advantages.
A.4 The workshop should, therefore,
A.5 Rejection
The tolerance the function allows is often greater than the without individual
tolerance indication. The function of the part is, therefore, not always impaired
when the without individual tolerance indication is (occasionally) exceeded at
any feature of the work piece. Exceeding the without individual tolerance
indication should lead to a rejection of the work piece only if the function is
impaired.
A.6 Application range of geometrical tolerance unnoted tolerance
Unnoted tolerance of geometrical tolerance is applicable to the part feature
which is abide by independent principle; to some part features abide by
envelope principle requirement and to some features with maximum material
dimension anywhere(see example in figure A1).
A7 Example of roundness unnoted tolerance
Example please see Figure A2.
Example 1, circle feature diameter tolerance is noted 25 0 1.0, roundness
unnoted tolerance is 0.1.
Example 2, circle feature diameter adopts unnoted tolerance, which is conform
to GB/T 1804 m grade.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Tips & Frequently Asked QuestionsQuestion 1: How long will the true-PDF of English version of GB/T 1184-1996 be delivered?Answer: The full copy PDF of English version of GB/T 1184-1996 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice. Question 2: Can I share the purchased PDF of GB/T 1184-1996_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 1184-1996_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 1184-1996 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds. Question 5: Should I purchase the latest version GB/T 1184-1996?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 1184-1996 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. How to buy and download a true PDF of English version of GB/T 1184-1996?A step-by-step guide to download PDF of GB/T 1184-1996_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "GB/T 1184-1996".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |