T/CAMMT 21-2019 Active Group standards

T/CAMMT 21-2019 Additive manufacturing and desktop-level extrusion forming equipment

Publish Date: 2019-07-01 Implement Date: 2019-07-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CAMMT 21-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Mechanical

ICS Name: The manufacturing molding process

Publish Date: 2019-07-01

Implement Date: 2019-07-01

Scope

Scope: This standard specifies the requirements for desktop-level material extrusion molding equipment, describes the corresponding test methods, and provides inspection rules and test reports for desktop-level material extrusion molding equipment. This standard applies to the R&D, production, use, inspection, and acceptance of material extrusion molding equipment with a single-phase rated voltage not exceeding 250V. This standard does not apply to handheld work-type material extrusion molding equipment. Main technical content: Table 1 - Evaluation Table for Molding Precision Precision Type Precision Grade Level 1 Level 2 Dimensional Precision Confidence Level Not less than 90%. Not less than 80%. Negative Space Performance Axial hole single-side clearance of more than 0.2mm can effectively separate. Axial hole single-side clearance of more than 0.3mm can effectively separate. Overhang Performance The lower surface of overhangs with angles of 70° or less can be smoothly molded. The lower surface of overhangs with angles of 60° or less can be smoothly molded. Bridging Performance The lower surface of suspended bridges with lengths of 50mm or less should be smooth and free of stringing, with no sagging or bulging exceeding 1.0mm. The lower surface of suspended bridges with lengths of 40mm or less should be smooth and free of stringing, with no sagging or bulging exceeding 1.0mm. Positive Space Performance All tip ends are neat and free of stringing. For tip ends with no more than 3 tips, there may be minor stringing.