STD 2024(德国塑料件公差标准).pdf

SAA=
STANDARD
STD 2024
Handlaggare/Handled by
Faststalld/ Approved
Datum/Date
Ungava/lssue
Sida/Page
TQTA Arne Carlson
TQT P-O Hedkvist
Juni 1982
1(13
Toleranser for formgjiorda artiklar
Tolerances for moulded parts of
av plast
plastic materials
Orientering
Introduction
Denna standard overensstammer i sak med tysk
The factual content of this standard agrees with the
standard DIN 16901. Tabell 1 har uppdaterats
German standard DIN 16901. Table 1 has been up
betraffande materialsorter
dated with regard to material types
Tolerans skall till skilinad fran DIN 16901, pa ritning
In contrast to DIN 16901 tolerances are always to be
alltid anges direkt vid respektive matt Avsnitt 2 Val
stated directly on the drawing in the vicinity of the
ay tolerans, ar saldedes enbart konstruktions
respective measurements. Thus section 2, selecting
anvshing
a tolerance, is simply an instrucion to designers
Innehall
Contents
Allmant
General
1 Deflnitioner
Definitions
Val ay tolerans
2 Selection a tolerance
2.1 Mattoleransgrupper, tabell 1
2.1 Dimensional tolerance groups table
2. 2 Mattoleranser tabell 2-5
2.2 Dimensional tolerances. tables 2-5
Angivelse pa ritning
3 Indication on drawing
3.1 Formslappningar
3.1 Drafting angles
4 Overenskommelser mellan kopare och tillverkare 4 Agreemetns between purchaser and manufac-
4.1 Exempel pa krav som bor avtalas innan de infors 4.1 Examples of requirements that should be
pa rioni
agreed upon prior to inclusion on the drawings
4.2 Bestamning av krympfaktor, tabell 6
4.2 Determining the contraction factor, table 6
Kompletterande upplysningar
5 Supplementary information
Allmant
General
Denna standard omfattar ett toleranssystem for
This standard provides a tolerance system for
ormgjorda artiklar av plast, framstallda genor
moulded plastic parts, produced by injection
formsprutning, sprutpressning eller formpressning
transfer or compression moulding
Krav betraffande utseende p g a t ex formdelning,
Appearance requirements created by, for example
intag, utstotning och sjunkning ingar ej men berors
mould parting lines, gates, ejectors and subsidence
avsnitt 4
are not included but are dealt with in section 4
I standarden tas hansyn till tillverkningsbetingade
The standard provides the manufacturing variations
mattvariationer, dvs sadana avvikelser som beror pa
in sizes, i.e. variations that are due to normal
normala
variationer i utaangsmateriale
rariations in the raw material
variationer hos processparametrar(temperatur
rariations in the process parameters
etc)
(temperature, etc.
variationer i laget hos rorliga verktygsdelar
ariations in the position of moving machine
and tool parts
toleranser och forslitningsgrad hos verktygen
tolerances and extent tools display wear