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Knowledge Sharing Issue #1 - Unit of Positioning Accuracy4
https://www.herbao.com.tw/en/ HER BAO MACHINERY CO., LTD.
HER BAO MACHINERY CO., LTD. 1 F., No. 10-59, Yuangang, 2nd Neighborhood, Yuangang Vil., Yuanli Township, Miaoli County 35852, Taiwan (R.O.C.)
  CMM Calibration for 2-Dimensional Motion TablesA Key to High-Quality Precision Positioning In precision manufacturing, rotary positioning tables are extensively used in machine tools, automation equipment, and precision machining processes. The accuracy of a two-dimensional (2D) motion table significantly impacts overall production quality and repeatability.Traditionally, the industry relies heavily on laser measurement systems for calibration. However, in specific high-precision applications, Coordinate Measuring Machines (CMM) offer a more detailed and visual inspection method.  What is a CMM, and why use it? A CMM (Coordinate Measuring Machine) uses contact probes or optical sensors to measure the geometric shape and dimensions of a component. It accurately captures X, Y, and Z coordinate data, effectively measuring flatness, parallelism, hole positioning, depth differences, and other critical geometric features.  Why do we use CMM in addition to laser inspection? Laser inspection provides rapid and non-contact measurements suitable for quickly detecting overall contour deviations. However, when it comes to pinpointing subtle deviations in specific positions during 2D rotational movement, especially in parallelism or perpendicularity, laser methods alone may not provide sufficient detail.In these cases, the CMM offers another highly effective solution. With its touch probe system, it precisely measures individual coordinate points, capturing detailed data that laser methods might overlook, enabling comprehensive verification of accuracy throughout table movement. Herbao Machinery’s Rotary Table CMM Calibration Procedure Step 1: Equipment Setup and Establishing Reference PointsThe rotary positioning table is firmly mounted on the CMM’s measuring table. Reference points are established to ensure consistent and accurate subsequent measurements.Step 2: Probe Positioning and Initial CalibrationA highly precise measuring probe locates and records the established reference points on the table’s surface, generating an accurate baseline data model.Step 3: Sequential Angle MeasurementThe table is incrementally rotated, typically by 15 degrees per step. After each rotation, the probe measures again, comparing the targeted angle against actual measurement data to verify rotational positioning accuracy.Step 4: Real-time Data AnalysisMeasurement data is instantly relayed to the computer, where software analyzes precision, ensuring parameters such as flatness, perpendicularity, and concentricity remain within permissible tolerances.Step 5: Comprehensive Data ReportingUpon completing all angle measurements, the CMM generates a detailed inspection report, which serves as a key reference for quality control and analysis, ensuring that the rotary positioning tables consistently meet the highest standards.  Real-World Applications The accuracy of two-dimensional motion tables is critical in industries such as high-precision component manufacturing, PCB drilling, semiconductor packaging, and medical device production. For instance, automated alignment and bonding systems operating without stringent calibration may result in slight inaccuracies, significantly increasing production line defect rates.  Conclusion  The introduction of CMM measurement technology not only enhances the reliability of rotary positioning tables but has become a crucial verification method in the precision machining industry. Herbao Machinery employs this technology to effectively ensure equipment quality, providing industry users with increasingly precise and stable solutions.Video Demonstration  Herbao Machinery continues to pursue technological innovation, providing customers with professional and reliable solutions.For technical inquiries or further information, please contact us! https://www.herbao.com.tw/en/hot_515084.html Knowledge Sharing #7 - Rotary Positioning Table Calibration: CMM as an Alternative to Laser Inspection 2025-05-16 2026-05-16
HER BAO MACHINERY CO., LTD. 1 F., No. 10-59, Yuangang, 2nd Neighborhood, Yuangang Vil., Yuanli Township, Miaoli County 35852, Taiwan (R.O.C.) https://www.herbao.com.tw/en/hot_515084.html
HER BAO MACHINERY CO., LTD. 1 F., No. 10-59, Yuangang, 2nd Neighborhood, Yuangang Vil., Yuanli Township, Miaoli County 35852, Taiwan (R.O.C.) https://www.herbao.com.tw/en/hot_515084.html
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2025-05-16 http://schema.org/InStock TWD 0 https://www.herbao.com.tw/en/hot_515084.html

禾寶機械將於2025年3月3日-8日參與2025台北國際工具機展,攤位號:D0324,歡迎蒞臨參觀!

Rotation Positioning Accuracy


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Rotation positioning accuracy is one of the key indicators in modern manufacturing industry, which is crucial for product quality and process stability. With the continuous development of manufacturing technology and standards, the requirements for rotation positioning accuracy are becoming increasingly stringent. This article explores the definition of rotation positioning accuracy according to ISO 230, analyzes the application of rotation positioning technology in different industries, and discusses its future development trends.

What are the units of rotation positioning accuracy?

Positioning accuracy can be expressed in terms of distance or angle, and the units of specification vary depending on different applications and industry standards. Here are the common units and specifications for positioning accuracy:

Distance Units


Positioning accuracy in terms of distance is typically expressed in millimeters (mm) or micrometers (μm). According to ISO 230 standards, distance specifications may include absolute accuracy, relative accuracy, repeatability accuracy, etc., and have specific measurement methods and tolerance ranges.

Angle Units

 

 

Positioning accuracy in terms of angle is usually expressed in degrees (°), minutes ('), and seconds (〞). According to ISO 230 standards, angle specifications may include angular error, tilt, deviation angle, etc., and also have specific measurement methods and tolerance ranges.

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▲ Angle unit illustration

When measuring and specifying positioning accuracy, various factors need to be considered, such as the accuracy of measurement equipment, measurement environment, material characteristics of workpieces, etc. Therefore, the unit specifications for positioning accuracy need to be determined according to specific applications and standards to ensure the accuracy of measurement results.

Rotation positioning accuracy is crucial for the manufacturing process and product quality. In the manufacturing process, precise rotation positioning ensures that machining centers can accurately position and process workpieces, thereby ensuring that the dimensions and shapes of products meet design requirements. Accurate rotation positioning can reduce errors and rework in the machining process, improve production efficiency, and yield rate.

In terms of product quality, rotation positioning accuracy directly affects the precision and surface quality of products. If the rotation positioning is inaccurate, it will result in workpiece positioning deviation, leading to problems such as inaccurate dimensions, rough surfaces, and irregular shapes, thereby affecting the functional and appearance quality of products.

Moreover, rotation positioning accuracy plays a key role in the manufacturing process. It ensures the alignment accuracy between different processing steps, achieving consistency and coherence in multi-step processing. At the same time, precise rotation positioning can reduce material waste and production costs in the manufacturing process, improve production efficiency, and control the quality level.

In summary, rotation positioning accuracy has a significant impact on the manufacturing process and product quality, not only related to the precision and surface quality of products but also directly affecting production efficiency and cost control. Therefore, it is essential to emphasize the improvement and control of rotation positioning accuracy in the manufacturing industry.


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