33-1-E-Bearing plate

29,00 

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In this practical example, a bearing plate that is installed in the “hole punch” assembly is specified.

When purchasing this product, you will receive a video (step-by-step guide) and a PDF file showing a before-and-after comparison in two variants.

Beschreibung

Here, we specify a bearing plate that is part of the “hole punch” assembly, as typically used in final examinations for metalworking apprenticeship programs.

Using a before-and-after comparison, we demonstrate how an initially ambiguous drawing is transformed into an
ISO-GPS-compliant and therefore function-oriented representation. Among other aspects, assembly intentions are made visible through unambiguous specifications.

This clearly illustrates the potential negative effects that ambiguous drawings can have on functionality.

Length of explanation video (Step by Step guide) : Approx. 26 min.

Variants: Yes – 2 Variants

Difficulty Level: Variant 1: Suitability 1 | Variant 2: Suitability 1-2

 

Description of the level of difficulty (suitability for the user):

1 – The user has basic knowledge but has not yet used ISO GPS frequently in practice and takes first steps.

2 – The user has basic knowledge but is not proof about using ISO GPS and would like to gain more general confidence.
More „special“ or complex modifiers (these are usually listed in the example description) are applied selectively.

3 – The user has sufficient knowledge, can already use frequently used ISO GPS tools without difficulty,
and would like to deepen knowledge selectively based on typical functional descriptions,
which is usually also product-specific (e.g., snapping features (latching hooks) on a plastic injection-molded part, special demand hole patterns, i.e. multi-level patterns etc.)
used in the example (i.e., listed in the description) (e.g., direction only or certain combinations of dimensional tolerancing, as well as SIM or similar modifications).

4 – The user has extensive knowledge, has been working with ISO GPS for a long time,
and would like to learn about very specific applications or modification operations, which usually describe more complex functional requirements and products.
This requires, for example, situation features, reference elements, filter information, association modifiers etc.

Used specification modifiers

In addition to the commonly used tools (profile, position, datums, etc.), the following modifiers were used:

  • Envelope requirement (Taylor principle)
  • LP modifier – Local point size
  • GX modifier – Maximum inscribed size
  • GN modifier – Minimum circumscribed feature
  • CZ – Combined zone
  • Orientation plane indicator

Standards

The following standards are helpful or have been used:

  • ISO 129-1      Technical product documentation (TPD) – Presentation of dimensions and tolerances

  • ISO 1101       Geometrical tolerancing – Tolerances of form, orientation, location and run-out

  • ISO 1660       Geometrical tolerancing – Profile tolerancing

  • ISO 14405-1: Dimensional tolerancing – Linear sizes

  • ISO 5459       Geometrical tolerancing – Datums and datum systems

  • ISO 22081     Geometrical tolerancing – General geometrical specifications and general size specifications

Special:

  • ISO 21204      Geometrical tolerancing – Transition specifications

Additional information

This is not a complete specification. For example, the following topics are not covered:

  • Edges of undefined shape (ISO 13715)
  • Indication of surface texture (ISO 1302 bzw. ISO 21920)
  • Data fields in title blocks and document headers (ISO 7200)