DIN EN – Free download as PDF File .pdf), Text File .txt) or read online for free. Find the most up-to-date version of DIN EN at Engineering Buy DIN EN STEEL DIE FORGINGS – TOLERANCES ON DIMENSIONS – PART 1: DROP AND VERTICAL PRESS FORGINGS.
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1023-1 who bought this product also bought BS EN Dimensional checks regarding depth of scale pits or any other point in question should be made in relation to the machining locations. The tables showing dimensional tolerances are based on the R20 series of preferred numbers see ISO 3. When no tolerance is indicated against the dimension concerned, the tolerance for the maximum length or width of the forging shall be applied from Table 1 or Table 2but the dispersion will be plus 10243- minus one-half of the total tolerance, and not 102431- shown in the tables.
Figure 6 Type of dimensions10 BSI 12 January Length and width tolerances are to be applied in directions parallel to the main die line, or as nearly so as practical considerations will permit.
For undated references the latest edition of the publication referred to applies. This European Standard is considered to be a supporting standard to those application and product standards which in themselves support an essential safety requirement of a New Approach Directive and which make reference to this European Standard. This should be done to obviate unnecessary minor variations between tolerances, thus facilitating drawing preparation and simplifying inspection procedures.
A similar procedure is followed for the factor of shape complexity so that downward displacement of the horizontal line used is nil, one place, two places and three places for factors S1, S2, S3 and S4 respectively. Sn tolerances depend on the forging mass and on the shape of die line. Considerations of this nature, whilst frequently encountered, are highly individual, and vary widely.
Residual flash and trimmed flat tolerances are applied independently of, and in addition to, any other tolerances. Tolerances for fillet radii and edge radii are shown in Table 6 and examples of such radii are shown in Figure In the latter case the tolerances shall be indicated against the appropriate dimension on the forging drawing. Your basket is empty.
The tolerance grade and tolerances given on the drawings are examples only and should not be regarded as either mandatory, recommended or minimum requirements since in practice the tolerances will depend on both the wn of the forging equipment and the 10243- of the purchaser.
They shall be taken from Table 1 and Table 2.
For centre-to-centre dimensions greater than 1 mm length, tolerances from Table 1 or Table 2, with equal plus or minus dispersions, shall be applied. Where any special tolerances are applicable they are indicated in the example by a small solid black circle alongside the tolerance.
Eccentricity tolerances for deep een shall be applied in addition to the normal tolerances for mismatch see Figure Please download Chrome or Firefox or view our browser tips. By further movement to the right, the correct tolerance is found under the appropriate vertical column heading for the dimension concerned wherever possible the greatest dimension of length, width or height see 5. 10243–1
BS EN 10243-1:1999
For dimensions from a centre to a surface see Figure 9 and for dimensions on steps within one die, the tolerances for 102443-1 greatest length, width and height shall apply wherever possible.
The cost of the forged part can be higher if grade E tolerances are selected, but the need for subsequent machining operations can often be reduced. Base all thickness tolerances except those for overall thickness on dimension t shown above.
Tolerances for the maximum permissible extent of burr relative to such edges are based on the weight of the forging, in accordance with Table 6 and are applied unless the purchaser specifies otherwise. This website is best viewed with browser version of up to 1024-31 Internet Explorer 8 or Firefox 3. This approach will ensure that optimum use is made of the forging process in fulfilling the purchaser’s special requirements fn the lowest additional cost. While grade E close tolerances may be applied to all dimensions on one forging, it is more economical to apply them only to those specific dimensions on which fn tolerances are essential.
Figure 16 Dimensions to which centre-to-centre tolerances are not applicable other than by negotiation Figure 17 Fillet and edge radii16 BSI 12 January Burr tolerances are applied independently of, and in addition to, any other tolerances. The faster, easier way to 12043-1 with standards. Drop and vertical press forgingsrgees par estampage en acier es dimensionnelles Pieces executees a chaud sur x-pilons ou presses verticalesGesenkschmiedeteile aus Stahl MatoTeil 1: All variations in thickness, due to die-closure, die-wear and shrinkage are included in the thickness tolerances.
In such cases, special tolerances shall be negotiated with the purchaser before the commencement of production.
BS EN – Steel die forgings. Tolerances on dimensions. Drop and vertical press forgings
See us on booth at NPE Documents. Only tolerances to grade F shall be applied. Tolerances for heavier or larger forgings shall be agreed at the time of enquiry and order. They are not used for check measurements on the actual forging, but for tool construction when forging dimensions are not measurable. When tolerances for sheared ends are required, this will be em to the purchaser on the forging drawing before the commencement of production.
To avoid extra expense, it is essential that all the dimensions be admitted into forging grade F. Examples are shown of circular and non-circular forgings see Figure 2 and Figure 3.