1. How to debug the accuracy of a laser cutting machine?

When the focal point of the laser is adjusted to its minimum, the initial effect is established by spot shooting, and the focal length position is determined by the size of the spot effect. As long as we determine that the laser spot is the smallest, then this position is the best processing focal length, and then we start processing work.

2. In the front of the laser cutting machine debugging, we can use some test paper and workpiece waste to determine the accuracy of the focal length position. Moving the height of the upper and lower laser heads will result in varying sizes of laser spots. Adjust different positions multiple times to find the smallest spot position to determine the optimal focal length and laser head position.

After the installation of the laser cutting machine, a marking device will be installed on the cutting nozzle of the CNC cutting machine. Through the marking device, a simulated cutting diagram will be drawn, simulating a square of 1m. The built-in diameter is a 1m circle, and diagonal lines are drawn at the four corners. After drawing, use a measuring tool to measure whether the drawn circle is tangent to the four sides of the square. Is the length of the diagonal of the square √ 2 (the data obtained by the square root sign is approximately: 1.), the central axis of the circle should be evenly divided into the edges of the square, and the distance between the central axis and the intersection of the square should be 0.5m. The cutting accuracy of the equipment can be determined by testing the distance between the diagonal and intersection points.

2. How to adjust coaxiality

Coaxiality adjustment method: axial radial dual meter combination measurement method

The principle of the axial radial dual meter combination measurement method is based on the angular displacement error and radial offset error between two axes. During measurement, two dial indicators (S) are installed on the reference axis to measure and adjust the coaxiality error of the shaft (M) (as shown in the figure). The measuring rod of the radial dial indicator points towards the outer surface of the half coupling (or shaft), perpendicular to the shaft, and is used to measure and adjust the radial displacement error value of the shaft; The measuring rod of the axial dial gauge is perpendicular to the end face of the half coupling (or shaft) (parallel to the shaft), used to measure and adjust the angular displacement error value of the shaft. Measure at four measurement positions (0 °, 90 °, °, °). Laser coaxiality measuring instrument.

Reason for coaxiality adjustment: Laser inner hole coaxiality measuring instrument.

The installation of couplings often involves mechanical engineering. A coupling is a device that rotates together with a shaft or a rotating component without detachment. Before buffering, vibration reduction, and safety protection, the coupling can compensate for the relative displacement of the two shafts. When the coaxiality error is too poor, the position of the shaft will cause additional force on the bearing, seriously reducing the service life of the bearing, accelerating the wear of the bearing seal, and leading to equipment leakage. In addition, excessive coaxiality can also cause a series of adverse effects, such as machine vibration, increased machine noise, increased energy consumption, and fatigue damage to parts. Laser cutting accuracy.