1、Manufacturing Standards A U-ABXi Diamond Requirements for Dressing Tools 1. SCOPE This standard applies to diamonds used as tools to remove hard material, alter shag? or size, produce a desired surface or accuacy of dimension, or a combination of these objectives. 2. PURPOSE To establish uniform nom
2、enclature and the quality level of indubtrial diamonds set forth on Ford procurement for diamond tools. 3. DIAMOND WEIGHT Permissible Hole Diameter Devia ti on Setting TABm I Manufacturing Administration DECEMBER 1990 U-ABXl Page 1 A Manufacturing Standards 1 U-A BX 1 d. CLASSIFICATION The quality o
3、f an industrial diamond is classified by using a series of numbers that define the shape, structure and surface to meet specific requirements. 4.1 Diamond Grades 4.1.1 1 Quality is defined as a stone of specified shape whose structure is sound, whole, free of inclusions or cracks and the surface of
4、which must be smooth, it may be shiny or dull, but must be clear or transparent. is defined as a stone of specified shape whose structure is free of definite flaws and the surface may be smooth or rough but must not show evidence of having a broken surface of structural flaws. A knotty or twisted in
5、ternal structure is acceptable. is defined as a stone of specified shape whose structure does not permit cracks, however, minor flaws away from the points are acceptable. point is also acceptable provided the other corners or edges are solid. is defined as a stone of specified shape whose qualie str
6、ucture is difficult to juge. more of the following: carbon spots, inclusions, flaws or cracks. The surface may be irregirlar. 4.1.2 2 Quality 4.1.3 . 3 Quality A rough edge or rounded 4.1.4 4 Quality Imperfections may Consist of one or Diamond Quality Selection The diamond grades described under 4.1
7、 and the shaping qualities under 4.3 are related to each other in specific quality ranges. Grading Qualities Shaping Qualities 1 A and B 2 and 3 B and C 4 D U-ABXI Page 2 Abrasives Manufacturing Administration. . . DECEMBER 1990 Diamond Dressing Tods - c-2 Manufacturing Standards A U-ABXl 4.2 Shape
8、Diamonds are available in assorted sizes and usually formed in the following shapes which are considered standard in the indus try: 1. 2. 3. 4- 5. 6, 7- 8. Dodecahedron Octahedron Maccles Elongated Rounds Bort . Grit Type Drill 12 Planes - 8 points 8 Planes - 6 points Triangular shapes Long or narro
9、w formatinri Some quite ball-like and some with irregular roundish characteristics including occasional points Rough diamond material of different sizes Small natural mined diamonds or fragmented bort Naturally grown Octahedron (0,02 - O,O carat) Setting hole diameters sham on Table 1 are to suit Do
10、decshedron and Octahedron diamc _. ;2imensions, Haccles diamonds are to be supplied with a O,75 carat weight and shall be soldered into a 9,5 x 5,2 x 6,5 deep recess. 4.5 Qualiti.es of Shape Where Dodecahedron shapes are specified for single point dressing tools the diamond shall meet the following
11、requirements : 4.3.1.1 A Quality shall have a minimum of eight good sharp points capable of being reset seven times. shall have a minim of six good sharp points capable of being reset five times. shall have a minimum of four good sharp points capable of being reset three times. shall have a minimum
12、of three good sharp points zzpcble of being reset twice. 4.3.1.2 13 Quality 4.3.1.3 C Quality 4.3.1.4 D Quality Manufacturing Administration Abrasives 1 Diamond Dressing Tools ! DECEMBER 1990 U-ABX1 Page 3 900Lb0 004bb58 LOT A Manufacturing Standards c-2 U-ABXI 4.3.2 Octahedron Where Octahedron shap
13、es are specified for single point dressing tools the diamond shall meet the following requirements: 4.3.2.1 A Quality shall have a minimum of six good sharp points capable of being reset five times. shall have a, minimum of four good sharp points capable of being reset three times. shall have a mini
14、mum of three good sharp points capable of being reset twice. shall have a m- U-enasny 700 for Prance 400 for Spaln CYK) for Europe MANDATORY SOURCE CHOICE. SEE BU“ U - A A - Z suppliers FEPA Grit size. See chart - Totai carat weight in 11100carat. See chart. Diamond shape. See chart. Part number. Al
15、ways O Setting size or holder. Aiways O L Diamond quality- _- - - - Diamond material See chart See chart Designates loose diamonds. Aiways 1 - -. - - -_.-_I- - - - FORD-Base leiter. IMPORTANT: Stondord part-number must always contain 16 diglts r-l Diamond shape Total carat weight in 1/l30 carat 5 15% (51 0 601 I Manufacturing U-ABX 1 Dressing tools - Administration . Poqe 8 DECEMBER 1990
