Volvo STD 101-0001 Скачать руководство пользователя страница 11 | Manualshive

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Standard

STD 101-0001

Volvo Group

Version

4

Page

11

Figure 9 – Thickness indicator for a non-modelled thin part

4.3 Common requirements for product-definition data

4.3.1 General

This section establishes the common requirements for the application, display management and query of product
definition data. Specific requirements for particular types of product-definition data are given in sections 4.4 to 4.9.

4.3.2 Common

requirements

4.3.2.1 Display management

Display management shall include the ability to enable or disable the display of annotations
completely, by type or selectively.

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Содержание STD 101-0001

Страница 1: ...nts 4 2 Digital Shape Model DSM requirements 4 3 Common requirements for product definition data 4 4 General notes and local notes 4 5 Model values and dimensions 4 6 Datum applications 4 7 Geometrica...

Страница 2: ...e note text or symbol required to complete the product definition or model feature of the product that is not visible but available upon querying the model digital shape model DSM portion of the data...

Страница 3: ...h cases the following fundamental requirements and other provisions apply When dimensions and other properties are indicated on the drawing these apply Dimensions displayed on the drawing are consider...

Страница 4: ...onometric the drawing shall contain a note stating that DSM is basis for dimensions not stated on the drawing and also give reference to this standard See also section 3 1 20 40 40 40 22 A B C A A 123...

Страница 5: ...e drawing DIGITAL SHAPE MODEL IS BASIS WHERE DIMENSIONS ARE OMITTED STD 101 0001 In exceptional case when the model number of the DSM is not linked to the part through the main document in the PDM sys...

Страница 6: ...cident annotation plane Figure 4 General application of perpendicular or coincident annotation plane The associated entities annotations and attributes shall be in agreement Resolved dimensions create...

Страница 7: ...be a clear distinction between the supplemental geometry and the model geometry a Represented line element The following geometric tolerances may use a represented line element to clarify the directio...

Страница 8: ...od for specifying product definition is used in support of different industry processes and requirements The data set is the original for all the methods Any copy no matter what the media of presentat...

Страница 9: ...ted set of geometry 4 1 8 2 Sections Saved views may be used to retain sections All sections shall be the same scale as the DSM A representation of a cutting plane shall be used to indicate the locati...

Страница 10: ...e 1 1 The model precision indicates the numeric accuracy required in the production of the part in order to fulfil the design intent The number of significant digits of the DSM shall be specified in t...

Страница 11: ...ablishes the common requirements for the application display management and query of product definition data Specific requirements for particular types of product definition data are given in sections...

Страница 12: ...Standard STD 101 0001 Volvo Group Version 4 Page 12 Ra 6 3 0 3 General notes Z a Model with all annotations displayed Figure 10 Display management...

Страница 13: ...ard STD 101 0001 Volvo Group Version 4 Page 13 Z b Model with one type of annotation displayed Figure 7 continued Ra 6 3 0 3 General notes Z c Model with selected annotations displayed Figure 10 conti...

Страница 14: ...re general provisions for defining an associative relationship between digital elements Annotation shall be associated to a model feature a group of features or a portion of an applicable model featur...

Страница 15: ...sented using text description forms or other techniques Applications of attributes include but are not limited to hardening coating knurling screw threads and centre holes 4 3 3 4 Annotation planes Th...

Страница 16: ...Standard STD 101 0001 Volvo Group Version 4 Page 16 a Initial attitude of model geometry and annotation b Rotated about 90 about the Z axis Figure 12 Annotation planes relative to model geometry...

Страница 17: ...ws Supplemented geometry is added to the model to show the direction of application The model geometry to which the tolerance applies shall be the associated geometry for the annotation see figures 6a...

Страница 18: ...uding the following Graphic display of associated entities the associated entities for a piece of annotation shall be highlighted or otherwise distinguished from other entities on the display on deman...

Страница 19: ...cators and datum target indicators Upon selection of a tolerance indicator the datum indicators and datum target indicators that correspond to the datum references shall be highlighted or otherwise di...

Страница 20: ...lar type is generally applied or applicable to features not associated to another requirement of the same type a general note can be stated and placed in a notes annotation plane corresponding to text...

Страница 21: ...dimensions within a pattern of features of size Direct query of the model surface or model feature of size is usually conducted for determining the shape curvature of surfaces and determining size va...

Страница 22: ...ts for attaching and displaying theoretically exact dimensions size values and plus and minus tolerances on a model are defined in the following subsections 4 5 3 1 Theoretically exact and nominal dim...

Страница 23: ...e model value is rounded to the same number of decimal places This agreement shall meet one of the following requirements depending on the tolerance expression used For bilateral or unilateral toleran...

Страница 24: ...an unambiguous method in orthographic views to represent a surface but it cannot be used on a 3 D model where it becomes indistinct 4 6 1 1 Datum system and model coordinate The following requirement...

Страница 25: ...f the centre point of a spherical feature derived feature The datum indicator shall be attached to the reference line for the dimension see datum F in figure 21a or to the tolerance indicator as shown...

Страница 26: ...s datum feature this limited area of application shall be represented on the model using supplemental geometry The datum indicator can be attached directly to the surface see figure 22 to the toleranc...

Страница 27: ...datum targets is shown Datum targets can be areas or points Datum target areas shall be shown using shading or crosshatching and datum targets points are shown with a cross See figure 23 Figure 23 Dat...

Страница 28: ...Datum feature indicator associativity Figure 24 Pattern of features establish a datum axis b When two or more co planar surface features are used to establish a datum plane the involved model surface...

Страница 29: ...Standard STD 101 0001 Volvo Group Version 4 Page 29 a Placement and attachment Visual response Query b Datum feature indicator associativity Figure 25 Co planar surfaces establish a datum plane...

Страница 30: ...1 The line or the surface itself When a tolerance applies to a line or to the surface itself the tolerance frame shall be connected to the toleranced feature by a leader line that ends with a dot on t...

Страница 31: ...the tolerance applies to the median plane of a width the tolerance frame shall be connected as an extension of the dimension line See figure 31 Figure 31 NOTE This is identical to the 2 D rule 4 7 1...

Страница 32: ...indications The examples shown in figures 33 34 and 35 are only examples of indications made in accordance with the rules of this standard and they are not intended to illustrate the complete definit...

Страница 33: ...ainly are intended for the specification of surface texture requirements on orthographic drawings The graphical symbol shall not be attached to single extension lines of model feature outlines The gra...

Страница 34: ...s on orthographic drawing views only These are the symbols used for requirements of the surface lay orientation to be parallel or perpendicular to the plane of projection When these two symbols are us...

Страница 35: ...ented line element 4 9 Other applications of 3 D annotation It is possible to apply the rules stated in this standard for those types of requirements that are suitable to specify by using 3 D annotati...

Страница 36: ...3 D annotation 5 References to this standard on model When a model but no drawing is used and the model is created in accordance with the rules given in this standard the following note shall be speci...

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