What Is a Profilograph?

The profilometer is an instrument for testing and inspecting the contour, two-dimensional size, and two-dimensional displacement of an object. It is widely used as a precision measuring instrument in the automobile manufacturing and railway industries.

The electric profilometer measures the slippage between the stylus of the instrument and the surface to be measured. It is a contact measurement. Its main advantage is that it can be measured directly

The stylus of the sensor is made of diamond, the arc radius of the tip is 2 micrometers, and a guide block is set at the rear end of the stylus to form a reference for measuring the macro fluctuations of the surface of the workpiece, so that the displacement of the stylus is relative to the sensor The housing moves up and down, so the guide block can play a role in eliminating macro

1. X axis:

1) Measuring range: 0 200mm;

2) Indication error: ± (0.8 + 2L / 100) m, where L is the horizontal measurement length, unit: mm;

3) Resolution: 0.01m;

4) Straightness: 2m / 200mm

5) Measurement speed: 0.05 5mm / s;

6) Moving speed: 0 10mm / s;

2. Sensor Z1 axis:

1) Measurement range: ± 25mm;

2) Indication error: ± (1.6+ | 2H | / 100) m, where H is the vertical measurement height, unit: mm;

3) Resolution: 0.01m;

3. Z axis:

1) Measuring range: 0 450mm;

2) Moving speed: 0 10mm / s;

4. Measuring force: 10 150mN;

5. Climbing ability: 77º uphill, 83º downhill;

6. Instrument size (length × width × height): granite slab 800 × 450 × 100mm; overall machine: 850 × 500 × 1100mm;

7. Total instrument weight: about 150;

8. Operating environment: no strong magnetic field, no vibration, no corrosive gas

Working temperature: 20 ± 2

Relative humidity: 40-70% RH

9. Power supply: AC 220,50HZ

10. Power: 350w

11. Sensor system: Imported high-precision grating measurement system

12. Resolution: 0.01µm

13. Linear guide: high-precision grinding guide

14. Driving device: linear motor, servo motor control

15. Measuring force system: computer automatic control

16. Computer: 24 "computer

Compared with traditional one-dimensional point laser measurement, the new

The laser profiler uses laser scanning technology. It has high frequency and high precision. It can accurately and quickly measure and inspect the contour, two-dimensional size and two-dimensional displacement of the object, and has strong environmental adaptability. As a precision measuring instrument in railways, The industry is widely used.

Measurement of wheel shape: Non-contact measurement of wheel shape can quickly and accurately measure wheel group parameters without direct contact. A laser displacement sensor ZLDS100 linearly moves along the shape of the wheel and records the surface data. The computer obtains the surface data of the wheel surface by recording the scanning travel distance and the laser distance value, and the characteristic change parameters, such as the thickness, height, width, and orientation of the wheel flange And wheel specifications. Moreover, this system is applied to both tramway and subway track measurement, moving forward and backward and directly integrated on the same wheel equipment. In addition, it is also used as a shop mobile laser-wheel profile measurement system.

Rail flatness measurement: Large-scale rail manufacturing enterprises Application: non-contact measurement system, online laser measurement of rail surface unevenness, and collecting the maximum and minimum data in the software, and compared with the seeming manual measurement for a long time, the results show The maximum deviation of the measurement method results is only 0.05 mm. The uneven track needs to be re-polished, which requires removing the convex hard parts on the rail and reducing the cost.