Quality appraisal of production line equipment

production line equipment takes system integration and process stability collaboration as its core principles. By optimizing production rhythm, positioning accuracy and failure rate, it achieves processing consistency, multi-process collaboration and energy consumption control. It is widely used in automobile assembly, electronic assembly, food packaging and pharmaceutical production and other fields. In automobile welding production lines, it is used for solder joint precision control of multi-robot collaborative operations; in semiconductor packaging, it meets the micro-pollution protection of wafer transmission; in flexible production lines, it ensures the rapid switching of multi-variety mixed flow. Compared with stand-alone equipment, production line equipment has the characteristics of data interconnection, intelligent diagnosis and modular expansion, and is the core carrier of intelligent manufacturing.

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

With the intelligent upgrade of production lines, related quality dispute cases have increased significantly. The judicial dispute focuses on:

1, performance index dispute: the actual production capacity does not reach the agreed value, and the accuracy of key workstations exceeds the standard;

2, material defects: the wear-resistant life of the transmission belt, the insulation level of the servo motor winding is not enough

3, process problems: multi-device communication delay, visual detection misjudgment rate;

4, contract performance dispute: core modules (such as imported PLC controllers, high-precision sensors) are inconsistent with the technical agreement.

production line equipment litigation quality appraisal mainly includes the following technical methods:

1, equipment performance testing

to detect various performance indicators of the equipment, including production efficiency, processing accuracy, stability, etc. Through actual operation testing and data analysis, it is judged whether the equipment meets the requirements stipulated in the technical contract.

2, material quality analysis

performs quality analysis on the materials used in the equipment and detects their physical properties, chemical properties and other indicators. Through laboratory testing and comparative analysis, determine whether the material meets relevant standards and contract requirements.

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The applicant, an automobile factory, and the respondent, an integrator, signed a "Body Welding Production Line Procurement Contract", agreeing that the welding spot accuracy is ±0.1mm. After being put into production, the solder joint deviation rate exceeded 15%. The manufacturer argued that it was caused by the settlement of the workshop foundation.

Identification analysis results:

The quality analysis expert group discussed and comprehensively analyzed the relevant information of "production line equipment", contract technical agreements, on-site inspection case materials and other data, and made the following qualitative analysis Quantitative analysis opinion:

The robot's repetitive positioning accuracy of the production line equipment involved in the case is ±0.25mm (protocol ±0.1mm), and the resolution of the visual system is insufficient (pixel error 0.05mm); the communication delay is 1.2s (protocol ≤ 0.5s), resulting in the accumulation of collaborative errors.

The appraisal conclusion determined that defects in the equipment control algorithm and sensing system were the main causes of quality.

Production line equipment quality appraisal report should include:

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

2, involved equipment model, software version, operation and maintenance log;

3, detection method and equipment list ( Such as laser tracker, power analyzer);

4, detection data and failure correlation analysis (such as the impact of communication delay on accuracy);