Technology / product information

NIDEC OKK MACHINERY (THAILAND) Co., Ltd., a member of the Nidec Group, is based in Samut Prakan, Thailand, and specializes in delivering high-quality products using precision machining technology.
The BPD (Between Pin Diameter) measurement method, used to evaluate fit accuracy in spline machining, detects subtle errors that traditional BBD (Between Ball Diameter) methods may miss. This article provides a detailed explanation of the load application process in BPD measurement.

■ Features
・Simulating actual fit conditions: Ensuring the pin contacts the minimum tooth thickness position, enabling measurements close to real fitting conditions.
・Improved accuracy: The load application process enhances repeatability and reliability of measurement results.
・Enhanced quality control: Improves fit accuracy in broached spline holes, ensuring the reliability of the final product.

■ Specifications
・Load application procedure:
Firmly grip the parallel block by hand to keep the pin gauge stable and prevent it from falling.
Ensure the pin remains steady even when the block is slightly moved.
Apply moderate pressure to improve repeatability and enhance the reliability of the measurement results.
・Recommended equipment: Use high-quality parallel blocks and pin gauges.

■ Application Examples
This load application process enhances the fit accuracy of broached spline workpieces by eliminating subtle errors during measurement. It allows for strict quality control, ensuring the delivery of reliable products to the market.

NIDEC OKK MACHINERY (THAILAND) Co., Ltd. is committed to advancing BPD measurement technology to improve precision machining processes and deliver high-quality products to our customers.

For more details, please download the PDF or feel free to contact us.