BS ISO 368:2017 pdf download

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BS ISO 368:2017 pdf download

BS ISO 368:2017 pdf download,Spinning preparatory, spinning and doubling (twisting) machinery — Tubes for ring-spinning, doubling and twisting spindles, taper 1:38 and 1:64
1 Scope
This document specifies the dimensions (length and inner diameter) and permissible total run-out tolerances of tubes with taper 1:38 and 1:64 for ring-spinning, doubling and twisting spindles used in the textile industry. It also specifies the dimensions and tolerances of the gauges for checking the tubes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 286-2, Geometrical product specifications (GPS) — ISO code system for tolerances on linear sizes —Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Types, dimensions and tolerances
4.1 Tubes
4.1.1 Tube types
Plain top tubes as shown in Figure 1 a) shall be designated as type A tubes. Rolled-in top tubes as shown in Figure 1 b) shall be designated as type B tubes.
4.1.2 Dimensions
Tube sizes shall be chosen from the dimensions specified in Table 1.
4.1.3 Total run-out tolerance
The permissible total run-out tolerance, T r , shall be in accordance with the values specified in Table 1.
The total run-out shall be measured in accordance with Figure 2.
4.2 Gauges
Gauges shall conform to the dimensions and tolerances specified in Table 2.
6.2 Gauges
The designation of a gauge in accordance with this document shall comprise the following information,in the order given:
a) “Gauge”;
b) a reference to this document, i.e. ISO 368;
c) the taper (1:38 or 1:64);
d) the length l 1 (corresponding to the tube the gauge is designed to check);
e) the number of the row (corresponding to the tube the gauge is designed to check).
EXAMPLE A gauge with taper 1:64 for tubes of length l 1 = 220 mm and row 2 is designated as follows:
Gauge ISO 368 – 1:64 – 220/2