In the fields of mechanical processing and quality control, concentricity is an important geometric quantity,
which reflects the degree of deviation of the rotational axis of the part. Measuring concentricity requires
specialized instruments. So, what is the name of the instrument used for measuring concentricity?
This article will provide you with a detailed analysis of different types of concentricity measuring instruments
and their applicable scenarios.
I. Common instruments for measuring concentricity:
Micrometers, dial test indicators, concentricity measuring instruments
1. There are various methods and instruments for measuring concentricity, and not just one type.
The commonly used instruments for measuring concentricity include micrometers, lever micrometers,
and specialized concentricity measuring instruments.
2. The micrometer, also known as the screw micrometer, can indirectly measure the concentricity of a part
by measuring the diameter variation at different rotation angles. This method is relatively simple,
has low cost, but has limited accuracy.
3. Dial test indicator, also known as lever dial indicator, can measure the concentricity of parts by measuring
the oscillation of the probe during the rotation of the part. This method has high accuracy, moderate cost
and wide application.
4. The concentricity measuring instrument is a specialized device designed for measuring concentricity.
It is usually equipped with a high-precision rotating shaft system and sensors, enabling highly accurate
and efficient concentricity measurement.
II. Applicable Scenarios for Different Types of Instruments:
Select the appropriate instrument based on precision requirements and part dimensions
1. When choosing a measuring instrument for concentricity, it is necessary to select the appropriate instrument
according to the specific precision requirements and part dimensions. For small parts with low precision requirements,
a micrometer or lever micrometer can be used for measurement.
2. For large-scale parts with high precision requirements or parts with complex shapes, it is recommended to use
a concentricity measuring instrument. For instance, in the fields of aerospace and automotive manufacturing,
high-precision concentricity measuring instruments are usually employed to ensure the quality of the parts.
III. Classification of the concentricity measuring instrument:
Contact type and non-contact type, each with its own advantages and disadvantages
1. The concentricity measuring instrument can be divided into two major categories: contact type and non-contact type.
The contact type concentricity measuring instrument measures the concentricity by using a probe to make contact
with the surface of the measured part, which has high accuracy, but it is prone to damaging the surface of the part.
2. The non-contact concentricity measuring instrument uses optical or laser technology to measure concentricity.
It does not damage the surface of the parts, but its accuracy is slightly lower than that of the contact-type
measuring instrument.
IV. Factors Affecting Coaxiality Measurement:
Part cleanliness, clamping method, measurement environment
1. The results of coaxiality measurement are influenced by various factors, such as part cleanliness,
clamping method, and measurement environment. Dirt or oil on the part surface can affect
the measurement accuracy.
2. Improper clamping method can cause the part to deform, thereby affecting the measurement results.
The temperature, humidity and vibration of the measurement environment can also have an impact on
the measurement results. Therefore, when conducting concentricity measurements, it is necessary to pay attention
to controlling these factors to ensure the accuracy of the measurement results.
V. Importance of Coaxiality Measurement:
Ensuring Assembly Accuracy and Service Life of Components
1. Coaxiality is an important geometric dimension in mechanical processing. It directly affects the assembly
accuracy and service life of components. Deviation in coaxiality can lead to difficulties in component assembly,
or even make assembly impossible.
2. During the usage process, if the concentricity exceeds the standard, it will cause the parts to vibrate,
increase the noise, and even lead to damage. Therefore, it is of utmost importance to accurately measure
and control the concentricity of the parts.
Here are the questions you might be interested in and their answers:
Q: How can the accuracy of concentricity measurement be improved?
A: To improve the accuracy of concentricity measurement, the following approaches can be adopted:
choosing the appropriate measuring instrument, controlling the measurement environment,
using the correct clamping method, and taking the average of multiple measurements.
Q: What is the price of the concentricity measuring instrument?
A: The price of a concentricity measuring instrument varies significantly depending on its accuracy, functionality,
and brand. A simple micrometer has a lower price, while a high-precision concentricity measuring instrument
has a higher price.
Q: How to choose the appropriate concentricity measuring instrument?
A: When choosing a concentricity measuring instrument, it is necessary to select the appropriate type and brand
based on specific precision requirements, part dimensions, and budget.
