Application of workshop type measuring machine in powertrain detection

Foreword

Throughout the powertrain manufacturing process, the cycle of part machining will be accurate to “seconds”, so the fast-paced production process requires fast and accurate inspection reports. The rapid presentation of measurement reports can effectively control the quality of products and prevent batch scrapping of manufactured products. At the same time, the workshop-type measuring machine becomes part of the production process through the modern database management system. After the workpiece measuring machine completes the workpiece measurement, it will quickly display the qualified parts in the software window through the graphical identification and digital report. The data will be uploaded to the user's database management center via the network, such as the Q-DAS database system, which is currently widely used in global powertrains.

This article describes the process of assembling the Global Silver SF measurement system from Hexagon Metrology in an advanced powertrain production line and its effective application in manufacturing engineering.

Powertrain inspection planning stage: The project planner will determine the number of online CMM equipment to ensure that the measurement efficiency is effectively matched with the processing and sampling frequency. In this respect, the dynamic performance of the measuring equipment, such as the spatial motion speed and the spatial motion acceleration, will be considered. The scanning speed and acceleration of the probe. According to the manufacturing precision and processing environment of the workpiece, the accuracy and equipment type of the measuring equipment are determined. This aspect mainly considers the ISO-10360 index of the measuring equipment MPEE, MPEP, MPETHP/t and the bearing capacity of the detecting system (the weight of the suspension extension rod and the probe) And length). At the same time, according to the needs of the user site, equipped with relevant auxiliary systems, such as: PUP system for stable voltage and air pressure in the workshop environment, for users to quickly and safely replace the workpiece loading and unloading system, to ensure the measurement status and stability of the workpiece. The fixture system is used to adapt to the dust in the workshop environment; "Picture 1" shows the layout of the online measuring machine for a powertrain production line. “Picture 2” shows the complete shop-type measuring machine measuring system; the Global Silver SF model has a space movement speed of 866 mm/s and a spatial acceleration of 2600 mm/s ² perfectly matched to the machining efficiency, equipped with Leitz LSP-X5 The series of probes, supporting a maximum load of 500 grams and a maximum length of 500 mm, will ensure that the powertrain components are subjected to contact scanning measurements at one time with high precision.

Proof of competency

Acceptance of workshop-type measuring system: not all measuring systems are adapted to the environment of the production workshop. According to the planning of the workshop and the consideration of cost, the temperature control of the production workshop is generally between 15 °C and 30 °C, and the measuring system is in production. After the workshop is installed, the measurement procedure will be completed according to the requirements of the control plan, and the detected beats will be controlled according to the requirements of the previous planning. Machine accuracy and measurement program verification are performed in the workshop environment. The most important verification is to complete the GR&R of the measuring equipment according to the requirements of MSA. The GR&R indicator consists of two indicators: repeatability and reproducibility. In a broad sense, it can be understood that the error value of these two indicators accounts for 10% of the total tolerance of the dimension as the measurement system passes.

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