ISO 10303-214:2010(E)

Figure — Arrowleft Figure — Clause 4 Figure — Arrowright

4.2.538 Thread_feature

A Thread_feature is a feature that is specified by a ridge of uniform section on the form of a helix on the external or internal surface of a cylinder.

EXAMPLE Thread features may be used to design screws and bolts.

EXAMPLE Figure 73 shows a Thread_feature applied to a screw.

The data associated with a Thread_feature are the following:

4.2.538.1 effective_thread_length

The effective_thread_length specifies the length of the thread which is usable by the application.

4.2.538.2 location_and_orientation

The location_and_orientation specifies an Axis_placement whose location represents the start of the thread and whose z-axis points into the direction of the possible runout.

See thread_feature to axis_placement for the application assertion.

4.2.538.3 maximum_thread_length

The maximum_thread_length specifies the usable thread length plus the runout.

The maximum_thread_length need not be specified for a particular Thread_feature.

4.2.538.4 thread_definition

The thread_definition specifies the Thread_specification that contains the parameters specifying the thread.

See thread_feature to thread_specification for the application assertion.



© ISO 2010 — All rights reserved