Online automatic measurement of inner diameter of inner hole, mechanical elastic contact point

Online automatic measurement of inner diameter of inner hole, mechanical elastic contact pointOverview

The plug gauge (BMD) is a high-precision measuring instrument with automatic display and centering functions. This gauge is easy to use and suitable for both static and dynamic measurements. By manual measurement, the size deviation and shape error of the hole can be detected, and it can also be installed on measuring equipment for automatic detection.

This measurement system has the advantages of wide application range, simple operation, high accuracy, and sturdy structure. There are many basic models to choose from in standard products, and available accessories are provided to ensure that most apertures encountered in practical applications can be measured.

The display part of the measuring instrument can be a mechanical meter, a digital display meter, or a sensor connected to the analysis equipment.

Introduction

The mechanical transmission measurement system can be connected to any pen type sensor, dial type or digital dial gauge.

The application range is 3-270mm. With a large number of accessories, it can be configured to measure holes with a depth exceeding 500mm and can measure holes perpendicular to the insertion direction.

Using a large number of modular components to meet various measurement needs.

Due to the high precision of mechanical transmission systems. Therefore, for zero adjustment, only one standard component is needed to complete it.

thatMechanical plug gaugeIt has high precision, high reliability, and is very sturdy. Just need to regularly clean the mechanical measurement transmission area without much maintenance,

zero point calibration

Use a calibration ring gauge for zero calibration, ensuring that the size of the calibration ring gauge matches the minimum size of the hole. This can ensure a significant reduction in axial and radial errors during the calibration process.

The environmental gauge that complies with JB/T11233-2012 standard is suitable for calibrating environmental gauges. Larger calibration ring gauges, or minimum, intermediate, and maximum calibration ring gauges, are usually not required.

Online automatic measurement of inner diameter of inner hole, mechanical elastic contact pointMain features

High measurement accuracy, with a repeatability of up to 1pm.

Measurable diameter range: 3~270mm.

The measurement transmission system has high durability and can perform more than 10.000.000 measurement cycles.

A sturdy and unique impact resistant structure.

Ensure excellent metrological performance for all diameters within the measurement range.

Can be connected to any measuring device (dial, digital dial gauge, or electronic unit).

Compatible with any pen sensor used in electromechanical applications.

● Compatible with major competitors' accessories.

The price has a competitive advantage.

Short delivery time.

Measuring principle

The guiding cylinder (4) can position the measuring point (6) of the probe at the axial and radial center of the hole. Grind the tapered measuring needle (3) and transmit the measurement stroke of the measuring point to the display gauge clamped on the handle (2) in a 1:1 ratio.

repeatability accuracy

The guiding cylinder of the plug gauge determines the position of the measuring point in the hole and ensures high repeatability accuracy. If the gap between the hole and the guiding cylinder is too small or too large, the longitudinal or transverse inclination will result in a decrease in repeatability accuracy.

maintenance

No special maintenance is required. If cleaning is required, remove the measuring needle and carefully clean the plug gauge body and measuring needle with compressed air and cleaning solution.

Please note: Before installation, apply grease (such as Vaseline) to the conical part of the measuring needle. Please make sure to reinstall the spring (4 series does not have a spring) when installing the 6 series and 10 series measuring needles

nominal size

Order size of plug gauge (nominal size=minimum size of hole)

Ø 35 D7=Ø 35+0.105/+0.08 BMD nominal size=35.08

Ø 35 H7=Ø 35+0.025/+0 BMD nominal size=35.0

Mechanical plug gauge BMD type

fundamental type

When the diameter is less than 44.0mm, the guide body and the threaded connection part are integrated as a whole. When the diameter is greater than 44.0mm, the guide body and threaded connection body are manufactured separately.

The basic type of plug gauge is usually used for manual measurement, so a guide groove is machined to protect the plug gauge from clogging when entering the hole. The 4 series BMD plug gauge does not have a guide groove.

Classification of plug gauges

The standard plug gauge of S-type used for ordinary hole measurement is not suitable for directly measuring the edge of the hole due to the small size of L1.

D-type plug gauge for through-hole measurement

FB type plug gauge for blind hole measurement

This type of plug gauge is used to measure the through-hole of workpieces. Another advantage is that the elongated L1 size ensures direct measurement of the edge of the hole

This type of plug gauge is usually used to measure the bottom of holes or shallow holes. When measuring shallow holes, the size of the guide groove should be reduced or removed.

Online automatic measurement of inner diameter of inner hole, mechanical elastic contact pointMechanical plug gauge scheme

The clamping of the translation mechanism can be done with a 55 outer circle or a 3-M4 threaded hole