For Suppliers
SONY
TECHNICAL STANDARDS
SS-00274
FIRST EDITION
ESTABLISHED 2005-08-25
SECURITY GRADE
CLASS C
APPEARANCE SPECIFICATIONS AND INSPECTION CRITERIA FOR COSMETIC PARTS
SS-00274-2005
Security Grade: Class C
The standards under this curity grade shall be applied by and be in the custody of the following parties only: (1) Sony Corporation (hereafter called Sony)
(2)
Sony and the associated companies taking responsibility of the whole operations related to Sony brand products. (3) The third parties specifically designated by any of the division of Sony or the associated companies.
For the handling of the standards in cas not specified above, refer to the cretariat of the Sony Technical Standards, Sony Corporation, Tokyo.
Est a
blished 2005.08. 25
Drafted by Mechanical Parts Standardization Committee (K. Hagawa, Vice Chairman)
Propod by Same as above
Authorized by Engineering Standardization Office, Advanced Design Technology Center (K. Y oneyama, General Manager)
Issued by Secretariat of the Sony Technical Standards
(Engineering Standardization Office, Advanced Design Technology Center) THIS DOCUMENT IS THE PROPRIETARY PROPERTY OF SONY. ITS USE IS AUTHORIZED ONLY FOR RESPONDING
TO A REQUEST FOR QUOTATION, OR FOR THE PERFORMANCE OF WORK FOR SONY. ALL QUESTIONS MUST BE REFERRED TO THE LOCAL PURCHASING DEPARTMENT OF SONY.
SS-00274-2005
CONTENTS
1. PURPOSE (1)
2. SCOPE (1)
3. PRACTICAL RULES (1)
4. INSPECTION AND EVALUA TION IN LINE WITH APPEARANCE GRADES (2)
4.1 Inspection Using Dot Gauge (3)
4.2 Instructions in Line with Appearance Grades (6)
5. INSPECTION AND EVALUA TION USING BOUNDARY SAMPLES (8)
5.1 Instructions Using Boundary Samples (8)
5.2 Evaluation Using Boundary Samples (8)
6. INSPECTION AND EVALUA TION BASED ON ANNOTA TIONS (8)
6.1 Instructions Bad on Annotations (8)
6.2 Evaluation Bad on Annotations (8)
7. INSPECTION ENVIRONMENT (9)
7.1 Lighting Conditions (9)
7.2 Viewing Conditions (9)
7.3 Inspector (9)
APPENDIX (10)
EXPLANA TORY NOTES (12)
SS-00274-2005
1. PURPOSE
This Standard provides appearance specifications for cosmetic parts comprising Sony commercial products, as well as acceptance criteria for visual inspection. Especially, Appearance Grades to be verified using the specified Dot G auge allow us to conduct an objective and quantitative evaluation for cosmetic surfaces.
This Standard aims to standardize appropriate requirements and inspection criteria for cosmetic surfaces company-wide, minimizing differences in evaluation results among receiving divisions, design divisions, and suppliers in a unified manner.
2. SCOPE
This Standard applies to cosmetic parts made of plastics, metals, or steel sheets, to which surface treatment
(e.g., painting, printing, foil stamping, and plating) is applied, surface-treated steel sheets, or plastics who
surfaces are not finished.
3. PRAC
T ICAL RULES
The designer shall describe appearance specifications for the cosmetic parts on the drawing with reference
to the visual inspection criteria detailed hereinafter. See Table 3.1 for advantages and disadvantages of
each of the criteria. It is recommended that the designer adopt Appearance G rades so as to perform a
quantitative evaluation from an objective standpoint. Instructions for appearance specifications shall be
given in accordance with the procedures shown in Figure 3.1.
Table 3.1 Advantages and disadvantages of each visual inspection criterion
Inspection
criteria
灰色配色
Advantages Disadvantages
Appearance Grades Enable an objective and quantitative
evaluation, using the Dot Gauge, to minimize描写着急的句子
differences in evaluation results among design
divisions, receiving divisions, and suppliers.
Make it difficult to evaluate some types of defects
on surfaces (e.g., hue and crack depth).
大班区域观察记录
Boundary samples Allow design divisions to provide receiving
蛤蜊冬瓜汤的做法divisions and suppliers with more preci
and detailed instructions on the appearance.
May result in a subjective evaluation due to
varying quality of boundary samples prepared by
designer. Require preparations of samples for
each surface, tailoring to specific purpos.
Annotations Require no task such as preparations of
boundary samples or instructions in line with
Appearance Grades.
May cau evaluation errors becau annotations
30秒自我介绍
should be made to drawings bad on verbal
discussion or arrangement between parties concerned.
Figure 3.1 Visual inspection procedures
SS-00274-2005
4. INSPECTION AND EVALUATION IN LINE WITH APPEARANCE GRADES
The designer should decide Appearance Grades in line with the grade specifications in Table 4.1, and specify them on the drawing in accordance with Subclau 4.2. Visual inspection should be performed bad on the grade specifications.
In the ca where the designer requires appearance specifications that are out of the grade specifications, he/she can define particular requirements on the drawing, or provide instructions using boundary samples in accordance with Clau 5. The decision of the Appearance Grades shall be made, taking into account the specific needs of product categories.
Table 4.1 Appearance Grade specifications
Higher
Appearance Grade 0 Appearance Grade 1 Appearance Grade 2 Appearance
Grade 3
Lower
Commonly-ud cosmetic parts 0.1 mm 2 0.3 mm 2 0.5 mm 2 0.7 mm 2
Badges, key tops, etc. 0.03 mm 2
Sony Badges 0.03 mm
2
0.05 mm 2 0.1 mm 2
Defects ∗1
:
Maximum allowable sizes
Transparent or translucent parts (Transmittance = T)
0.03 mm 2(T > 50%)
0.03 mm 2
(T > 50%)
0.05 mm 2
(50% ≥ T > 20%) 0.1 mm 2
(20% ≥ T)
Defects: Maximum
allowable
number (N) and pitches (P) Defects in a
100-mm square N: 2 P: 70 mm
N: 2
P: 70 mm N: 3
梅树P: 50 mm
N: 4
P: 30 mm
Protrusions, cracks, voids, and blurs
1/4 of line width
1/4 of line width
1/3 of line width
1/2 of line width
Printing defects: Maximum
誓师口号
allowable sizes
Pinholes 0.03 mm
2
0.03 mm 2
0.05 mm 2
0.1 mm 2
Hue and color difference
孟母不欺子Particular
requirements are given as needed. ∆E = 1.2 or less, L* = ± 1.0, a*/b* = ± 0.3
Particular requirements are given as needed.
∗1 Defects: Bumps, dust, scratches, dents, and the like, which may be found on the cosmetic surfaces.
Footnotes to Table 4.1:
1. Refer to Tables 4.2, 4.3, and 4.4 for details of Appearance Grades.
2. Table 4.1 is not applicable to zinc plating.
3. Table
4.1 is not applicable to weld lines, flow marks, uneven gloss, sink marks, burrs, galling, and the like which generate differently on each kind of cosmetic parts.
4. Instructions on the appearance specifications should be given, taking into consideration surfaces of the product into which cosmetic parts are incorporated, including their materials and colors.
5. Pre-painted steel sheets should ensure the Appearance Grade 2, 3, or lower.
6. Metal-coated steel sheets should ensure the Appearance Grade 2, 3, or lower.
7. Electrodeposition coating is generally ud as undercoating, and should ensure the Appearance Grade 3 or lower.
8. “Sony badges” and “key tops” were bundled together in a group for the grade specifications, but “b
adges” of general u are grouped with key tops so that a wide array of badges can be evaluated. The Sony badges shall meet no other requirements but Appearance Grade 0.
