|
Grootte: 2612
Commentaar:
|
Grootte: 3438
Commentaar:
|
| Verwijderingen worden op deze manier gemarkeerd. | Toevoegingen worden op deze manier gemarkeerd. |
| Regel 15: | Regel 15: |
| * Naming is based on visible appearance like "Square" and "Rounded". * By prefixing the name with a standard institute and use a trailing general used profile designation, a global unique designation is created that is better understood. |
* Naming is based on visible appearance like "Square" and "Rounded", seeking a compromise between habitual naming, being practical and being complete enough to achieve global coverage. * By defining a shape, followed by parameters for geometry, a global unique designation is created. |
| Regel 19: | Regel 19: |
| A shape is defined by a concatenated string, consisting of two parts: * Shape defining parameters like R for Rectangular bar. * Geometry defining parameters 30*5 for width and height in mm. Following this example, the designation is: {{{ R30*5}}} == String of shape defining parameters == |
|
| Regel 24: | Regel 31: |
| == First character, main shape == | === First character, main shape === |
| Regel 37: | Regel 44: |
| == Following characters, additional shape characteristics == The sieve consist of characteristics that are additional to the main shape. So what is standard, what is expected is not specified. Deviations are marked wit a character. From top to bottom: |
=== Following characters, additional shape characteristics === The sieve consist of characteristics that are additional to the main shape. So what is standard, what is expected is not specified. Deviations are marked with a character. From top to bottom: |
| Regel 43: | Regel 50: |
| ||'''E''' ||Width does not equal height ||Equal width and height and or equal legs ||LE, TE, ZE ||For Squares and Rectangles an E is not applicable. For Z-profiles only equality of legs is meant. || | ||'''E''' ||Width does not equal height and or not equal legs ||Equal width and height and or equal legs ||LE, TE, ZE ||For Squares and Rectangles an E is not applicable. For Z-profiles only equality of legs is meant. || |
| Regel 46: | Regel 53: |
| ||'''X''' or '''Y''' ||Whole shape ||Shape is cut over length ||IDSX, UDY ||X is horizontal cutting, Y is vertical, based on orientation in the table with examples and dimensions and as discussed under "orientation".|| ||'''I''' ||Metric dimensions in millimetres ||Imperial dimensions in inches ||RHRI, IDI ||This is always the last character, making it a prefix for the dimension string that follows. || = String of geometry defining parameters = |
STATUS: DRAFT
This standard defines a universal way to describe a shapes.
Inhoud
Intend
The intend is to offer a way to classify industry standard profiles, not limited to steel, based on shape only.
The reasons for using this standard can be:
- Shapes are described not depending on manufacturing characteristics such as "warm rolling".
- Shapes are described not depending on function characteristics such as "beam".
- The names are better suited for use in automation applications.
- Naming is based on visible appearance like "Square" and "Rounded", seeking a compromise between habitual naming, being practical and being complete enough to achieve global coverage.
- By defining a shape, followed by parameters for geometry, a global unique designation is created.
Naming
A shape is defined by a concatenated string, consisting of two parts:
- Shape defining parameters like R for Rectangular bar.
- Geometry defining parameters 30*5 for width and height in mm.
Following this example, the designation is:
R30*5
String of shape defining parameters
The name is one or a combination of characters.
- The first character is the main shape. Examples: "T-profile" and "Rectangular"
- Subsequent characters are only designated if not corresponding to the expected default shape and or add extra shape complexity. This works like a sieve. The longer the code, the more complexity.
First character, main shape
The first character determines the basic shape.
The first row contains abbreviations:
H |
Hexagonal |
C |
Circular |
S |
Square |
R |
Rectangular |
The second row is more obvious, the letter represents the shape. O stands for omega.
Following characters, additional shape characteristics
The sieve consist of characteristics that are additional to the main shape. So what is standard, what is expected is not specified. Deviations are marked with a character. From top to bottom:
Char. |
Standard, to be expected |
Deviation |
Examples |
Remarks |
H |
Solid |
Hollow |
CH, RH |
CH is a pipe. |
D |
1: Parallel thickness |
Diverging thickness |
ID, TD |
This is typical for warm rolled and extruded products where internal radii change the thickness or when flanges end in a radius instead of ending straight. |
S |
2: Parallel thickness |
Flange is a slope |
IDS, UDS |
Also typical for some warm rolled products. |
E |
Width does not equal height and or not equal legs |
Equal width and height and or equal legs |
LE, TE, ZE |
For Squares and Rectangles an E is not applicable. For Z-profiles only equality of legs is meant. |
F |
No extra flanges |
Extra flanges |
UF |
|
R |
Sharp edges |
Round edges |
LR, UR |
Typical products with one or more bending radii. |
X or Y |
Whole shape |
Shape is cut over length |
IDSX, UDY |
X is horizontal cutting, Y is vertical, based on orientation in the table with examples and dimensions and as discussed under "orientation". |
I |
Metric dimensions in millimetres |
Imperial dimensions in inches |
RHRI, IDI |
This is always the last character, making it a prefix for the dimension string that follows. |