What is the method of turning the machine's centering (centering) condition
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Jun 23,2022
How can I know if my heart is bad When the vibration of the machine equipment is quite large, and we suspect that it is caused by bad heartbeat, in addition to the method of vibration analysis, the easiest way is to use the scale to check directly. Commonly used are Reverse Indicator alignment, Rim and Face alignment and laser precision alignment.
Most people who do not know the importance of alignment will use the visual method and the ruler method to compare the height deviation on both sides of the coupling, but due to the relationship between machining accuracy and visual deviation, it is often impossible to make the equipment reach a good Therefore, it is best to use a scale or a more precise laser alignment tool to implement the alignment work. There are many ways to use the scale for alignment, including:
Reverse Indicator to heart method
Rim and Face
Across-the-Flex-Element
Double Indicator heart method
Continuous shaft alignment
Reverse Indicator to heart method
When using the scale method to implement the heart-to-heart work, it is best to use graph paper, a ruler, and a pen to assist, so that the heart-to-heart work can be completed faster. When the scale is set up, measure the distance between the two scales, the distance from the scale to the front foot of the motor, and the distance from the front foot of the motor to the back foot, then draw a vertical adjustment line of the motor on the graph paper, and mark each point and distance.
Make the two axes rotate synchronously, read and record the gauge values at 0, 3, 6, and 9 o'clock in sequence (generally, it is best to reset the reading at 0 o'clock to zero first), and then set the 0 pairs according to the ratio. Half of the difference at 6 o'clock is marked on the vertical adjustment line of the graph paper. Finally, connect the marked points on the vertical adjustment line respectively, and extend them to the positions representing the front and rear feet of the motor, so that the size of the front and rear feet of the motor that should be adjusted in the vertical direction can be read.
Rim and Face
The only difference in using this method is that both gauges measure the coupling of the fixed side machine. The table reading represents the misalignment of the parallel deviation. As with the Reverse Indicator method, after the gauge is set up, measure the diameter of the coupling, the distance from the end face of the coupling to the front foot of the motor, and the distance from the front foot of the motor to the back foot, and then draw two straight lines on the graph paper (one with For drawing angle deviation lines, one is used to draw parallel and total deviation lines), and mark each point and distance according to the scale.
Read and record the values of the two scales. First, mark the difference between 0 and 6 oclock on the end face on the vertical angular deviation line of the graph paper, and then scale the end face with 0 to 6. Half of the o'clock difference is marked on the vertical parallel and total deviation line of the graph paper, and then draw a straight line parallel to the angle deviation line from the marked point, so that the front and rear feet of the motor should be adjusted in the vertical direction. size.
Laser precision alignment
In industry, lasers are more and more widely used in processing and measurement. Diode lasers and helium-neon lasers, which are most commonly used in measurement applications, generally have lower output power than processing lasers, and their prices are also higher. less expensive. Lasers are characterized by good beam directionality, good parallelism, and long service life. Modern laser measuring instruments are not only precise, but also simplify work, have high reliability, and are lightweight and inexpensive.
At present, the laser precision centering technology applied to centering work is divided into two categories. One is the dual-laser centering technology derived from the principle of Reverse Indicator's centering method; the other is the single-laser centering technology derived from the principle of Rim and Face's centering method. At present, both of them have been developed into visible light lasers, making laser centering work easier and more accurate.
The steps of using laser precision alignment are the same as the above-mentioned scale alignment method, the difference is that we no longer need to use paper and pen to draw, calculate and adjust the size. When using laser alignment, due to the limitation of the area of the laser sensing panel, usually a better coarse alignment must be implemented first.
When choosing your favorite laser, you must pay special attention to the following points:
Problems with reproducibility of result readings, especially under strong sunlight;
The laser sensor panel has good filter and rate wave function selection;
In addition to the centering function of horizontal and vertical equipment, it should also have the function of soft foot detection.
A good laser is ideal, and its functions also include functions such as straightness, flatness, parallelism of universal joints, and angle detection of machine tool shafts.
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1.The news above mentioned with detailed source are from internet.We are trying our best to assure they are accurate ,timely and safe so as to let bearing users and sellers read more related info.However, it doesn't mean we agree with any point of view referred in above contents and we are not responsible for the authenticity. If you want to publish the news,please note the source and you will be legally responsible for the news published.
2.All news edited and translated by us are specially noted the source"CBCC".
3.For investors,please be cautious for all news.We don't bear any damage brought by late and inaccurate news.
4.If the news we published involves copyright of yours,just let us know.
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