Lid with fixing holes

26,00 

In this practical example, a lid with fixing holes is specified.

The application example describes several typical elements such as hole patterns, burrs, tool separations, and more.

When purchasing this product, you will receive a video (step-by-step guide) and a PDF file.

Beschreibung

A plastic lid is specified. In addition to the typical challenges such as warpage, which must be taken into account, typical elements such as complex circumferential contours and hole patterns are described.

Restrained conditions are defined and general tolerancing (according to ISO 22081) is considered concerning properties of injection moulded parts. Practical approaches are shown.

A functional datum system is established by using datum target indications.

Features specific for injection moulded parts, such as burrs and tool separations are described.

Length of explanation video (Step by Step guide) : Approx. 38 min.

 

Variants: No

Difficulty Level: Suitability 2-3

 

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:

  • LS modifier – Local spheres 

  • CZ – Combined zone (Common zone)
  • GX modifier – Maximum inscribed feature

  • Free state condition modifier 

  • Collection plane indicator 

  • Intersection plane indicator
  • Datum targets

  • Parting surface 

  • Flash requirement 

  • >< – For orientation constraint only (direction only) modifier

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 14405-2 Dimensional tolerancing – Dimensions other than linear or angular sizes
  • ISO 5459      Geometrical tolerancing – Datums and datum systems
  • ISO 10135    Drawing indications for moulded parts
  • ISO 10579    Geometrical product specifications (GPS) – Dimensioning and tolerancing – Non-rigid parts

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)