Cover with latching hook

29,00 

In this practical example, a cover with latching hooks is specified. Two variants are presented.

The application example describes several typical features, such as latching hooks, continuous perimetral contours, burr and mould parting lines and much more.

When you purchase this product, you will receive a video (step-by-step guide) and a pdf file of the respective variants.

Beschreibung

An injection moulded cover is specified. In addition to the typical challenges such as warpage, which must be taken into account, typical elements such as locking hooks and surrounding contours are described.
Restrained conditions are defined and general tolerancing (according to ISO 22081) is also considered concerning plastic components. Practical approaches are shown.

Features specific for injection moulded parts, such as burrs and tool separations, as well as the demand for nondisturbed surfaces are described.

Length of explanation video (Step by Step guide) : Approx. 36 min.

 

Variants:Yes – 2 Variants

Difficulty Level:
Variant 1: Suitability 2-3 | Variant 2: 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 

  • UZ Specified tolerance zone offset (unsymmetrical zone)

  • UF – United feature

  • Linearly variable tolerance zone (0,2-0,5)

  • Free state condition modifier 

  • collection plane indicator 

  • Datum targets

  • Parting surface 

  • Flash requirement 

  • Undisturbed surface 

                 

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
  • ISO 22081 Geometrical tolerancing – General geometrical 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)