1、ICS 25.040.40 Ref. No. ISO 10303-111:2007/Cor.1:2008(E) ISO 2008 All rights reserved Published in Switzerland INTERNATIONAL STANDARD ISO 10303-111:2007 TECHNICAL CORRIGENDUM 1 Published 2008-12-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATIONIndustrial a
2、utomation systems and integration Product data representation and exchange Part 111: Integrated application resource: Elements for the procedural modelling of solid shapes TECHNICAL CORRIGENDUM 1 Systmes dautomatisation industrielle et intgration Reprsentation et change de donnes de produits Partie
3、111: Ressources dapplication intgre: lments pour la modlisation procdurale des formes solides RECTIFICATIF TECHNIQUE 1 Technical Corrigendum 1 to ISO 10303-111:2007 was prepared by Technical Committee ISO/TC 184, Automation systems and integration, Subcommittee SC 4, Industrial data. Introduction Th
4、e modifications made to ISO 10303-111:2007 have four main objectives: a) to correct the reference to the type non_negative_length_measure, which was originally defined in ISO 10303-108 but has now been moved to ISO 10303-41; b) to disambiguate references to enumerated values in WHERE rules of the en
5、tity extruded_face_solid_with_trim_conditions; c) to correct an invalid initialization assignment to a local variable in the function compute_total_depth; d) to rename the enumerated values of the type blend_radius_variation_type to avoid a name space clash with Edition 2 of AP209. The opportunity h
6、as also been taken to correct an error in the logic of the function validate_countersink_radii. ISO 10303111: 2007/Cor.1:2008(E) Modications to the text and gures of ISO 10303111:2007 Introduction, pp. vii, viii Replace Figure 1 on p. viii with the following: Figure 1 Schema level diagram of relatio
7、nships between the solid_ shape_element_schema of this part of ISO 10303 and other resource schemas 2 c ISO 2008 All rights reservedISO 10303111: 2007/Cor.1:2008(E) Clause 4.1, Introduction, pp. 5,6 Replace the formal reference to the measure_schema on p. 5 with the following: REFERENCE FROM measure
8、_schema ISO 1030341 (length_measure, non_negative_length_measure, plane_angle_measure, positive_length_measure, positive_plane_angle_measure); Further, delete the formal reference to the explicit_geometric_constraint_schema on p. 6, and also delete the line specifying that schema from NOTE 1 on the
9、same page. Clause 4.3.5, blend_radius_variation_type, p. 9 Replace the EXPRESS code and the enumeration list on p. 9 with the following: EXPRESS specication: * ) TYPE blend_radius_variation_type = ENUMERATION OF (linear_blend, cubic_blend, unspecified_blend); END_TYPE; ( * Enumerated item denitions:
10、 linear_blend: the blend radius varies linearly between radius denition points. cubic_blend: the blend radius varies as a cubic between radius denition points. unspecied_blend: the blend radius variation is not specied. Clause 4.4.6, solid_with_variable_radius_edge_blend, pp. 17 19 Replace the descr
11、iptive text on p. 18 between Notes 3 and 4 with the following: In any interval whose radiusdening function is cubic_blend, the actual function is determined us ing Hermite interpolation, in terms of the radii at each end point of the interval and values of the rst derivatives of the radius variation
12、 function at those end points. Replace the text of Note 5 on p. 18 with the following: In any interval for which the value of the radiusdening function is unspecied_blend it is recom mended that linear interpolation is used initially in the receiving system, but that the user is warned that some oth
13、er native blending capability of that system may be more appropriate. Clause 4.4.48, extruded_face_solid_with_trim_conditions, pp. 6466 Replace the EXPRESS code on p. 65 with the following, in which WHERE rules WR2, WR3, and WR4 have been modied: c ISO 2008 All rights reserved 3ISO 10303111: 2007/Co
14、r.1:2008(E) EXPRESS specication: * ) ENTITY extruded_face_solid_with_trim_conditions SUPERTYPE OF (ONEOF (extruded_face_solid_with_draft_angle, extruded_face_solid_with_multiple_draft_angles) SUBTYPE OF (extruded_face_solid); first_trim_condition : trim_condition_select; second_trim_condition : trim
15、_condition_select; first_trim_intent : trim_intent; second_trim_intent : trim_intent; first_offset : non_negative_length_measure; second_offset : non_negative_length_measure; WHERE WR1: NOT(MEASURE_SCHEMA.PLANE_ANGLE_MEASURE IN TYPEOF(first_trim_condition) OR (MEASURE_SCHEMA.PLANE_ANGLE_MEASURE IN T
16、YPEOF(second_trim_condition); WR2: NOT (MEASURE_SCHEMA.LENGTH_MEASURE IN TYPEOF(first_trim_condition) AND (first_trim_intent = trim_intent.offset) OR (first_trim_intent = trim_intent.up_to_next) OR (MEASURE_SCHEMA.LENGTH_MEASURE IN TYPEOF(second_trim_condition) AND (second_trim_intent = trim_intent.
17、offset) OR (second_trim_intent = trim_intent.up_to_next); WR3: NOT (NOT (MEASURE_SCHEMA.LENGTH_MEASURE IN TYPEOF(first_trim_condition) AND (first_trim_intent = trim_intent.blind) OR (first_trim_intent = trim_intent.through_all) OR (NOT(MEASURE_SCHEMA.LENGTH_MEASURE IN TYPEOF(second_trim_condition) A
18、ND (second_trim_intent = trim_intent.blind) OR (second_trim_intent = trim_intent.through_all); WR4: (first_trim_intent = trim_intent.offset) AND (first_offset 0) XOR (first_trim_intent 0) XOR (second_trim_intent trim_intent.offset) AND (second_offset = 0); WR5: NOT(MEASURE_SCHEMA.LENGTH_MEASURE IN T
19、YPEOF(first_trim_condition) AND (MEASURE_SCHEMA.LENGTH_MEASURE IN TYPEOF(second_trim_condition) AND (first_trim_condition = second_trim_condition); END_ENTITY; ( * Clause 4.5.2, compute_total_depth, pp. 72, 73 Replace the EXPRESS code on p. 72 with the following: 4 c ISO 2008 All rights reservedISO
20、10303111: 2007/Cor.1:2008(E) EXPRESS specication: * ) FUNCTION compute_total_depth (swsrh : solid_with_stepped_round_hole) : positive_length_measure; LOCAL i : positive_integer; n : positive_integer := swsrh.segments; td : positive_length_measure := swsrh.segment_depths1; END_LOCAL; IF n = 1 THEN RE
21、TURN(td); ELSE REPEAT i := 2 TO n; td := td + swsrh.segment_depthsi; END_REPEAT; END_IF; RETURN(td); END_FUNCTION; ( * Clause 4.5.3, validate_countersink_radii, pp. 73,74 Replace the EXPRESS code on pp. 73, 74 with the following: EXPRESS specication: * ) FUNCTION validate_countersink_radii (cskhole
22、: solid_with_stepped_round_hole_and_conical_transitions) : BOOLEAN; LOCAL i,j : INTEGER; n : INTEGER := 1 + cskholesolid_with_stepped_round_hole.segments; smaller, larger : positive_length_measure; END_LOCAL; REPEAT i := 1 TO SIZEOF(cskhole.conical_transitions); First check whether transition i appl
23、ies to the entry of the hole or the exit of a through hole those cases only need to be checked for the sign of the cone apex angle. IF (cskhole.conical_transitionsi.transition_number = 1) AND (cskhole.conical_transitionsi.cone_apex_angle 0) THEN RETURN(FALSE); ELSE IF (cskhole.conical_transitionsi.t
24、ransition_number n) c ISO 2008 All rights reserved 5ISO 10303111: 2007/Cor.1:2008(E) THEN For all remaining transitions, check that the cone base radius lies in the range of validity. BEGIN j := cskhole.conical_transitionsi.transition_number; IF cskholesolid_with_stepped_round_hole.segment_radiij cs
25、kholesolid_with_stepped_round_hole.segment_radiij1 THEN BEGIN IF (cskhole.conical_transitionsi.cone_apex_angle 0) THEN RETURN(FALSE); END_IF; larger := cskholesolid_with_stepped_round_hole.segment_radiij; smaller := cskholesolid_with_stepped_round_hole.segment_radiij1; END; ELSE BEGIN IF (cskhole.co
26、nical_transitionsi.cone_apex_angle larger) OR (cskhole.conical_transitionsi.cone_base_radius smaller) THEN RETURN(FALSE); END_IF; END; END_IF; END_IF; END_REPEAT; RETURN(TRUE); END_FUNCTION; ( * Annex D, pp. 79ff. The changes identied in this Technical Corrigendum require ve of the EXPRESSG diagrams
27、 to be changed. Replace Figures D.5, D.6, D.7, D.8 and D.10, respectively, with the following diagrams: 6 c ISO 2008 All rights reservedISO 10303111: 2007/Cor.1:2008(E) Figure D.5 solid_shape_element_schema EXPRESSG diagram 5 of 11 c ISO 2008 All rights reserved 7ISO 10303111: 2007/Cor.1:2008(E) Fig
28、ure D.6 solid_shape_element_schema EXPRESSG diagram 6 of 11 8 c ISO 2008 All rights reservedISO 10303111: 2007/Cor.1:2008(E) Figure D.7 solid_shape_element_schema EXPRESSG diagram 7 of 11 c ISO 2008 All rights reserved 9ISO 10303111: 2007/Cor.1:2008(E) Figure D.8 solid_shape_element_schema EXPRESSG diagram 8 of 11 10 c ISO 2008 All rights reservedISO 10303111: 2007/Cor.1:2008(E) Figure D.10 solid_shape_element_schema EXPRESSG diagram 10 of 11 c ISO 2008 All rights reserved 11
