ISO 8062-4:2023 幾何製品仕様 (GPS) — 成形部品の寸法および幾何公差 — Part 4: 一般的なデータム システムでの輪郭公差を使用した鋳造品の規則と一般公差 | ページ 6

3.1

moulded feature

feature of a moulded part which has not been machined

3.2

intermediate machined feature

feature of a moulded part which has undergone some machining and which subsequently will be machined to its final condition

Note 1 to entry: An intermediate machined feature is typically a roughly machined moulded feature (3.1) .

Note 2 to entry: An intermediate machined feature can be used as a datum for subsequent machining of the moulded part.

3.3

final machined feature

feature of a moulded part which has been machined to its final condition

3.4

final moulded part

moulded part after fettling (if any)

Note 1 to entry: A final moulded part only consists of features which are moulded and have not been finished except by fettling.

3.5

intermediate machined moulded part

moulded part which has undergone some machining and which subsequently will be machined to its final condition

Note 1 to entry: An intermediate machined moulded part consists of at least one moulded feature (3.1) to be subsequently machined or at least one intermediate machined feature (3.2) . In addition, it consists of moulded features not to be machined (if any) and final machined features (3.3) (if any).

Note 2 to entry: An intermediate machined moulded part can be produced from a final moulded part (3.4) or from another intermediate machined moulded part.

3.6

final machined moulded part

moulded part which has been machined to its final condition

Note 1 to entry: A final machined moulded part consists of final machined features (3.3) and can include moulded features (3.1) not to be machined. A final machined moulded part cannot include intermediate machined moulded features.

Note 2 to entry: A final machined moulded part can be produced from a final moulded part (3.4) or from an intermediate machined moulded part (3.5) .

3.7

moulded part condition

manufacturing stage of a moulded part

Note 1 to entry: Listed in chronological order of manufacturing, a moulded part can be in a final moulded part (3.4) condition, intermediate machined moulded part (3.5) condition or final machined moulded part (3.6) condition.

Note 2 to entry: Only one final moulded part condition exists.

Note 3 to entry: Various intermediate machined moulded part conditions can exist.

Note 4 to entry: Only one final machined moulded part condition can exist.

Note 5 to entry: A moulded part does not need to exist in an intermediate machined moulded part condition before the final machined moulded part condition.

Note 6 to entry: Heat treatment or straightening (correction of unintended distortion) can be carried out in any moulded part condition.

3.8

product definition

<of a moulded part> drawing or a 3D model representing the product

3.9

single product definition

product definition (3.8) of a moulded part giving requirements for one moulded part condition (3.7) only

3.10

combined product definition

product definition of a moulded part giving requirements for more than one moulded part condition (3.7)

3.11

draft angle

taper

value of inclination (angle) that is added to a geometrical feature of a pattern or mould to ensure the removal of the pattern or moulded part from the mould

3.12

external draft angle

draft angle (3.11) on a surface that has no opposite surface in the direction outward of the part

Note 1 to entry: See Figure 1.

3.13

internal draft angle

draft angle (3.11) on a surface that has an opposite surface in the direction outward of the part

Note 1 to entry: See Figure 1.

Figure 1 — External and internal draft angles

Key

	length of the external feature
	length of the internal feature
	external draft angle
	internal draft angle

3.14

draft angle increasing the tolerance of feature(s)

draft angle (3.11) which is added to the model geometry and included in the tolerance zone

Note 1 to entry: See Figure 17 d).

3.15

general datum system RST

datum system according to ISO 5459, locking all degrees of freedom and used for the general tolerance

Note 1 to entry: Annex G provides an example of using general tolerances. For the general datum system RST, see Figure G.2.

Note 2 to entry: It is recommended that the datum feature identifiers R, S, and T are used for the general datum systems for moulded parts.

Note 3 to entry: It is recommended that a datum target system RST is used, see Figure G.1.

Note 4 to entry: The datum letters R, S, T are reserved for the general datum system, see 10.3.

3.16

wall thickness

minimum dimension between two surfaces (external and internal) enclosing solid material

Note 1 to entry: The surface can be planar, cylindrical, complex or any combination thereof.