Standard Numbers for DesignStandardiluvut suunnitteluunPythagoras identified in music the scale relationships that work as an introduction to EP-calculation. Also technical design is based to "musical scale of engineering ", referred to as the standard basic sets of numbers. The standard basic sets of numbers are based on same idea than Archimedes' "Golden Rule of Balance", the lever arm length. The further away some value is from the smaller, the higher the value is compared to smaller. The following are two definitions of the standard numbers, one of which is SFS standard and the second DIN standard. It is the same. It is elapsed time since about 2.500 years from Pythagoras times. SFS 2964 standard 1973"The standard numbers are to streamline and facilitate the magnitudes of free choice of the values. Standard numbers are applicable for any quantity at and are also used for other than standard parts. Additional numbers be exercised only when a specific reasons." The above is a clear guideline to follow standard numbers. Have we passed the instruction and ignored it? Have we perhaps unknowingly used the ratios? This occurs eg. when dimensioning steel profiles and the various components are based on the standard numbers. The above is a clear guideline to follow standard numbers. Have we passed the instruction and ignored it? Have we perhaps unknowingly used the ratios? This occurs eg. when dimensioning steel profiles and various components that are based on the standard numbers. An example of HEA cross-section 1 - 1.25 - 1.6 - 2 - 2.5 - 3.15 - 4 - 5 - 6.3 - 8 - 10HEA 100 120 160 200 240 300 400 500 600 The same when some other cross-section. Later we calculate the before showed.
Conveyor belt widths in mm. 1 - 1.25 - 1.6 - 2 - 2.5 - 3.15 - 4 - 5 - 6.3 - 8 - 10300 400 500 650 800 1000 1200 1600 2000
Metric screws (mm) 1 - 1.25 - 1.6 - 2 - 2.5 - 3.15 - 4 - 5 - 6.3 - 8 - 10M1,2 M1,6 M2 M2,5 M3 M4 M5 M6 M8 M10 M12 M16 M20 (M24) M32 M42 DIN 323, DIN 3"Normal numbers are used in machinery and equipment to set selections, prescribing pressures, revolution, peripheral speed, powers, and similar variables as well as numerical values of length to machine parts." As a general rule the dimensions must comply with the basic procedures without compromising the appropriateness of technical features or without wasting possible raw material. Basic Series R 5 1.6 x 1.6 x 1.6 x 1.6 x 1.6 = 10.(486) 1 – 1.60 – 2.50 – 4.00 – 6.30 – 10 1.65 = 10 1.2510 = 10 1.1220 = 10 1.0640 = 10 (1.0380 = 10) Basic Series R 10 One or two set of standard numbers can not be explained the engineering design in practice, but it can model. The basic set of standard numbers R 5 is too few to product design. Therefore, the standard numbers for the basic set of R 10 complete the set of R5, including the factor 1.25. Factor 1,25 is good for a number of products. Also to structural analysis, as well as machinery ageing, so it can say 1.25 is a major factor.
1.00 – 1.25 – 1.60 – 2.00 – 2.50 – 3.15 – 4.00 – 5.00 – 6.30 – 8.00 – 10.00Basic series R 20 1.00 – 1.12 – 1.25 – 1.40 – 1.60 – 1.80 – 2.00 – 2.24 – 2.50 – 2.80 – 3.15 – 3.55 – 4.00 – 450 – 5.00 – 5.60 – 6.30 – 7.10 – 8.00 – 9.00 10.00 The basic set R 20 of standard numbers is too dense to product design, product variations, because the number becomes large, but it is perfect for goods, such as pipes, etc. Wheel diameters to crane end carriages1 - 1,25 - 1,6 - 2 - 2,5 - 3,15 - 4 - 5 - 6,3 - 8 - 10 125 160 200 250 315 400 500 mm Basic series R 40 1.00 – 1.06 – 1.12 – 1,18 – 1.25 – 1.32 – 1.40 – 1.50 – 1.60 – 1.70 – 1.80 – 1.90 – 2.00 – 2.12 – 2.24 – 2.50 – 2.65 – 2.80 – 3.00 – 3.15 – 3.35 – 3.55 – 3.75 – 4.00 – 4.25 – 4.50 – 4.75 – 5.00 – 5.30 – 5.60 – 6.30 – 7.10 – 8.00 – 9.00 – 10.00
(For example outside diameters of tubes and pipes in mm)
The Use of Basic Series Standard numbers based on a series of R 5, has well-proportioned aspect ratio of 1.6. This can be checked by measuring one of the room length and width. Also, the face height and width ratio of 1.6 is considered pleasant. Measure the width and height of the head and you notice this.
Series R10 supplement form, which is raised in strength calculations. The designer does the work of strength and deformation, in addition planning the object to withstand corrosion and fatigue. Product Designer is not a designer, but a properly determined is often pleasant to the eye.
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