Probe measurement:

1. Working principle of measuring needle:

The measuring needle is a component of the measuring system. When the measuring needle tip of the measuring needle comes into contact with the workpiece being measured, the change in the measuring needle tip drives the measuring head mechanism to generate a signalProcessed byProvide measurement results to achieve the detection purpose.

2. Sources of measurement errors for measuring needles

Environmental temperature and humidity, stiffness of the needle composition material, accuracy of the needle tip, coaxiality between the needle tip and the thread of the needle handle, accuracy of the thread of the needle handle, and the relationship between the needle tip and the tested objectPosition of workpiece contact.

It is recommended to calibrate the measuring needle during precision measurement, otherwise it will decreaseMeasurement accuracy.

3. Principles for selecting measuring needles

1. The diameter of the measuring ball should be as large as possible to reduce the influence of the surface roughness of the tested workpiece on the detection results.

2. Try to keep the measuring needle as short as possible. The shorter the measuring needle, the less it will bend or deform,The higher the accuracy.

3. Try to minimize the number of joints, as each additional connection point adds a potential bending and deformation point.

4. Connection form of measuring needleThreaded or straight shank connection

5. Basic mechanism of spherical threaded connection direct measuring needle

Needle tip, needle rod, needle handle, extension rod, collision protection seat, etc.

Probe measurement includesTwo menus, namely "Probe Measurement" and "3D Auxiliary Measurement".

The "Probe Measurement" menu is mainly used for single measurement of objects, including the following commands:Probe settings: Perform some routine settings for the probe, including calibration of the probeWait.

Horizontal line measurement: used to measure a straight line parallel to the horizontal plane.

Horizontal circle measurement: used to measure circles parallel to the horizontal plane.

Space point measurement: used to measure any point in space, this command requires setting a reference plane.

Space line measurement: used to measure any straight line in space, this command requires setting a reference plane.

Space circle measurement: used to measure any circle in spaceIt is necessary to set a reference plane.

Solution setting: used to set the compensation method for spatial points, lines, and circles, such as whether they are projected onto the reference plane, etcWait.

Height measurement: used to measure objects inDistance in the Z direction.

Plane measurement: Use a probe to measure at least3 points are used to fit a planeTo obtain the flatness and other parameters of this plane.

Ball measurement: Use a probe to measure at least4 points are used to fit a sphere to determine its straightnessParameters such as diameter.

Cylinder measurement: taken with a probe6 o'clock is used to fit a cylinder, and this command requires setting the baseQuasi planar.

Cone measurement: using a probe to measure6 points are used to fit a cone, and this command requires setting the baseQuasi planar.

Behavioral tolerance measurement: flatness, parallelism, perpendicularity, inclination.

Note: The probe has an automatic rebound protection and anti-collision function. The collision speed and rebound distance can be set according to measurement requirements. Yixin probe automatic measurement system can guaranteeProof testingThe smoothness of the contact between the head and the workpiece surface ensures the stability and continuity of force measurement, thereby improving the precision of repeated measurements of the productDegree, Z Automatic rebound function of the axis measuring headIt can prevent strong impact and improve the durability and reliability of the product Yixin probe automatic measurementThe product data measured by the measurement system can IGS Format output and can be importedUG and TRE In 3D software