The application of calipers and micrometer in CNC machining
The application of calipers
Calipers can measure the inner diameter, outer diameter, length, width, thickness, step difference, height, and depth of objects processed by mechanical parts; the caliper is the most commonly used and most convenient measuring tool, and the most frequently used measuring tool at the processing site.
Digital caliper: 0.01mm resolution, used for size measurement with small fit tolerance (high precision).
Table card: resolution 0.02mm, used for conventional size measurement.
Vernier caliper: resolution 0.02mm, used for rough machining measurement.
2. Application of Micrometer
Before using the micrometer, you need to use clean white paper to remove dust and dirt (use a micrometer to measure the contact surface and screw surface to jam the white paper and then pull it out naturally, repeat 2-3 times), then twist the knob to measure the contact When the surface is in fast contact with the screw surface, use fine adjustment. When the two surfaces are in full contact, adjust the zero to start the measurement.
When measuring precision hardware with a micrometer, adjust the knob. When the machined parts are quickly touched, use the fine-tuning knob to screw in. After hearing the three sounds of click, click, and click, stop, and read the data from the display or scale. When measuring plastic products, the measuring contact surface and screw lightly touch the product.
When measuring the shaft diameter with a micrometer, measure at least two directions and take the maximum value of the micrometer in sections. The two contact surfaces should be kept clean at all times to reduce measurement errors.
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