T/ZJVITIA 18-2022 Active Group standards

T/ZJVITIA 18-2022 Announcement on the Group Standard for Motor Gear Shaft of Automotive Window System Motor

Publish Date: 2022-11-21 Implement Date: 2022-12-01 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/ZJVITIA 18-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Other

Publish Date: 2022-11-21

Implement Date: 2022-12-01

Scope

Main Technical Content: 1. Scope: This document specifies the types, requirements, test methods, inspection rules, marking, packaging, transportation, and storage of worm gears. This document applies to automotive worm gears and their transmissions. 2. Normative Reference Documents: The content of the following documents is an essential part of this document through normative reference. Among them, the referenced documents with a specified date only apply to the version corresponding to that date; the latest version (including all amendments) of the non-dated referenced documents applies to this document. - GB/T 131: Product Geometric Specifications (GPS) - Surface Structure Representation in Technical Product Documents - GB/T 191: Packaging and Storage Graphic Symbols - GB/T 10089: Cylindrical Worm Gears and Worm Wheels - Precision - GB/T 10085: Basic Parameters of Cylindrical Worm Gear Transmissions - GB/T 10610: Product Geometric Specifications (GPS) - Surface Structure Profile Method for Evaluating Surface Structure Rules and Methods 3. Terms and Definitions: There are no terms or definitions requiring definition in this document. 4. Types: - Archimedean Worm Gear (ZA Worm Gear); - Normal Straight Profile Worm Gear (ZN Worm Gear); - Epicycloid Worm Gear (ZI Worm Gear); - Conical Surface Enveloping Cylindrical Worm Gear (ZK Worm Gear). 5. Requirements 5.1 Roughness 5.1.1 Surface roughness shall be evaluated using the centerline method (profile method); 5.1.2 Surface roughness parameters shall be selected from the following two items: - Arithmetic mean deviation of the profile (Ra); - Maximum height of the profile (Rz). 5.1.3 Within the commonly used parameter range of amplitude (peak and valley) (Ra = 0.025μm~6.3μm, Rz = 0.1μm~25μm), it is recommended to prioritize Ra. 5.1.4 When specifying surface roughness requirements, the basic requirements of surface roughness parameter values and sampling length values at the time o