Product assembly equipment quality appraisal

product assembly equipment takes the synergy of precision positioning and process stability as the core principle. By optimizing the assembly rhythm, pressure accuracy and repetitive positioning accuracy, it achieves the synergy of dimensional tolerance, joint strength and production continuity of component assembly. It is widely used in automated production lines of automotive parts, consumer electronics, medical equipment and home appliances. In electronic products, it is used for micron-level mounting of PCB boards and components; in automobile assembly, it meets the interference fit requirements of engine components; in the field of medical equipment, it is used to ensure precision packaging in a sterile environment. Compared with traditional equipment, product assembly equipment has the characteristics of multi-axis linkage control (servo drive + visual positioning), intelligent error-proofing and rapid model change, and is a key equipment for efficient production.

Zhongke Testing is a product quality appraisal service organization registered with the court. It can provide product assembly equipment quality appraisal services. It has a professional appraisal team and advanced instruments and equipment to provide fair and accurate appraisal results for product assembly equipment quality appraisal.

As product complexity increases, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1. Dispute over performance indicators: excessive assembly accuracy and insufficient joint strength;

2. Material defects: peeling off of the wear-resistant coating of the fixture and sealing life of pneumatic components;

3, process problems: multi-axis synchronization error, sensor signal drift;

4, contract performance dispute: core modules (such as imported servo motors, high-precision force control systems) are inconsistent with the technical agreement.

1, appearance inspection

Appearance inspection is the first step in identification. The appraiser will conduct a comprehensive inspection of the appearance of the equipment, including its surface flatness, scratches, deformation, rust, etc. Appearance problems may affect the aesthetics of the device, or may be an external manifestation of internal quality problems within the device.

2, performance test

Performance test is one of the core contents of the identification. The appraisers will test various performance indicators of the equipment according to the requirements of the technical contract and relevant standards, such as the operating speed, accuracy, stability, power, etc. of the equipment. Through performance testing, you can determine whether the equipment can meet the usage requirements.

3, material analysis

An auto parts factory of the applicant signed an "Engine Piston Assembly Line Purchase Contract" with an equipment manufacturer of the respondent, agreeing that the assembly accuracy is ±0.03mm. After being put into production, the piston eccentricity exceeded 0.1mm, and the manufacturer argued that it was caused by operating vibration.

identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information of "product assembly equipment", contract technical agreements, on-site inspection case materials and other data, and made the following quality scores Analytical opinion:

The servo motor torque of the product assembly equipment involved in the case fluctuates by ±15% (agreed ±5%), the resolution of the visual positioning system is insufficient (agreed 0.01mm, measured 0.05mm); the clamp coating hardness HV is only 650 (agreed ≥ 800), resulting in uneven clamping force.

The appraisal conclusion concluded that equipment control accuracy and material defects are the main causes of assembly failure.

Product assembly equipment quality appraisal report should include:

1, appraisal purpose (such as production accident attribution, performance verification) and reference standards;

2, involved equipment model, control system version, production log;

3, testing method and equipment list ( Such as laser interferometer, universal testing machine);

4, correlation analysis between test data and failure (such as the impact of torque fluctuation on eccentricity);