Electric Wrench Design Specification: A Comprehensive Guide for Export170

This document serves as a comprehensive design specification for an electric wrench intended for export to international markets. It outlines key design considerations, performance requirements, safety features, and manufacturing specifications to ensure the product meets both international standards and the demands of diverse consumer and industrial applications. This specification is aimed at manufacturers and exporters of electric wrenches, providing a framework for consistent, high-quality production.

1. Introduction

The electric wrench described herein is designed for [specify target market, e.g., automotive repair, industrial maintenance, DIY applications]. The design prioritizes robustness, durability, ease of use, and safety, while maintaining competitiveness in terms of cost and performance. The target market demands a product that is reliable, efficient, and capable of withstanding rigorous use. This document details the necessary specifications to achieve these goals, considering factors such as power requirements, torque output, ergonomic design, and safety certifications.

2. Performance Requirements

2.1 Torque Output: The electric wrench must deliver a variable torque output range of [specify range, e.g., 10-150 Nm] with an accuracy of ±[specify percentage, e.g., 3%]. The torque setting should be easily adjustable and clearly indicated on the tool. Calibration procedures must be included in the user manual.

2.2 Speed Control: The wrench should offer variable speed control, allowing the user to adjust the speed according to the application. The speed range should be [specify range, e.g., 0-2000 RPM] with precise control and smooth transitions between speeds. A switch for forward and reverse operation is required.

2.3 Power Source: The wrench will be powered by a rechargeable [specify type, e.g., lithium-ion] battery with a minimum operating time of [specify time, e.g., 2 hours] on a single charge. The battery should be easily replaceable or removable for convenient charging. Charging time should not exceed [specify time, e.g., 4 hours]. The battery pack needs to comply with relevant international safety regulations (e.g., UN38.3).

2.4 Durability and Robustness: The wrench’s housing and internal components must be constructed from high-quality, durable materials (e.g., high-strength steel, impact-resistant plastic) to withstand significant impact and wear and tear. IP rating should be [specify IP rating, e.g., IP65] to ensure protection against dust and water ingress.

3. Safety Features

3.1 Overload Protection: The wrench must incorporate an overload protection system to prevent damage to the motor and gearbox in the event of excessive torque application. This system should trigger an audible and/or visual warning.

3.2 Emergency Stop: A readily accessible emergency stop mechanism should be integrated into the design to allow for immediate cessation of operation in emergency situations.

3.3 Insulation and Grounding: All electrical components must be adequately insulated to prevent electric shock. The tool must include appropriate grounding mechanisms to comply with relevant safety standards.

3.4 Safety Certifications: The final product must meet and exceed all relevant safety standards including, but not limited to, [specify relevant standards, e.g., CE, UL, CSA, RoHS]. All necessary certifications must be obtained prior to export.

4. Ergonomic Design

The wrench’s design should prioritize ergonomics to minimize user fatigue and enhance comfort during prolonged use. This includes considerations for:
Grip Design: The handle should provide a comfortable and secure grip, even with gloved hands.
Weight and Balance: The tool should be lightweight and well-balanced to minimize strain on the user's wrist and arm.
Switch Placement: The controls should be easily accessible and intuitive to operate.

5. Manufacturing Specifications

5.1 Materials: Specific materials for each component should be detailed, including their respective grades and specifications. This includes the motor, gearbox, housing, battery, and other key components.

5.2 Tolerances: Manufacturing tolerances for all critical dimensions must be specified to ensure proper assembly and functionality.

5.3 Quality Control: A comprehensive quality control plan must be implemented throughout the manufacturing process, including incoming material inspection, in-process inspection, and final product testing. This includes functional testing, torque accuracy testing, and safety testing.

6. Packaging and Labeling

The electric wrench should be packaged in durable and protective packaging to prevent damage during shipping and handling. The packaging should clearly display all necessary information, including product specifications, safety instructions, and country of origin. Labels should comply with all relevant international regulations for product labeling.

7. Conclusion

This design specification provides a comprehensive framework for the manufacture and export of a high-quality electric wrench. Adherence to these specifications is crucial for ensuring product safety, reliability, and compliance with international standards. Regular review and updates to this document are recommended to reflect technological advancements and evolving market demands.

2025-07-03

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