Which of the following methods for determining the accuracy of machine tool positioning do you understand the best from ndpetrify4's blog

the target position should be taken at 30-second intervals when using a computer-controlled rotary table, according to the manufacturer's recommendations. A total of seven fast positioning attempts are made in both the forward and reverse directions for each of the target positions, with one attempt made for each of the target positions in each direction. A total of seven fast positioning attempts are made in both the forward and reverse directions for each of the target positions. When you are using a computer, you can calculate position deviation by pressing the calculate position deviation key on your keyboard. Defining it as the difference between the actual reached position and the target position, it can be calculated by pressing the + key on the keyboard while in the desired position (as depicted in Figure 1)The abbreviation GB10931 refers to the United Kingdom of Great Britain and Northern Ireland, which is the country represented by the abbreviation GB. A digital control machine tool's position accuracy is evaluated using the method specified in 89 Digital Control Machine Tool Position Accuracy Evaluation Method, which is used to calculate the average position deviation and standard deviation of the machine tool. The difference between the maximum sum of all average position deviation and standard deviations and the sum of the minimum sum of all average position deviations and standard deviations is the positioning accuracy error of the cnc milling part milling milling parts milling part rotary table, and the difference between the maximum sum of all average position deviation and standard deviations and the sum of the minimum sum of all average position deviations and standard deviations is the positioning accuracy error of the t-slot cnc milling parts milling part milling services rotary table, and the difference between the maximum sum of all average position deviation and standard deviations and the sum







It is usually necessary to conduct key measurements on a number of right-angle equal division points, such as 0, 90, 180, and 270 degrees, in order to ensure that dry-type transformers in actual use meet the design requirements. If the accuracy of these points is being compared to the accuracy of other angular positions, it is necessary to multiply the accuracy of these points by a factor of one in order to account for the increased precision.

In order to determine the indexing accuracy of the device, it is necessary to use the rotary table repeatedly.

If the rotary table is rotated in both the forward and reverse directions three times, it is necessary to repeat the positioning procedure at any three positions within a circle on three separate occasions, once at each of the three positions within a circle, in order to perform the detection procedure under rotation in both the forward and reverse directions of the rotary table. In mathematics, it is defined as the product of the difference between all measurements and the theoretical value of a given position multiplied by the number of measurements, where the number of measurements equals the maximum indexing precision that is available. If you want to learn more about cnc milling milling service milling part milling part knowledge, you should consider joining the Facebook group 726236503, which is solely dedicated to the topic. It is recommended that, if the target position is being captured by means of a cnc milling milling service rotary table, it be selected as one measurement point every 30 seconds and that the five rapid positioning operations be performed on each target position in both forward and reverse directions prior to capturing the actual position before the actual position is captured. The distance between one's current location and one's desired location (or vice versa) is defined as the distance between two points on a map. It is possible to calculate the position deviation with the help of the formula provided below:We compute standard error of the mean using position deviation, which is calculated according to the method specified in GB10931-89, and we do so in accordance with the specifications of that specification. We discovered that when using the cnc milling part rotary table, the maximum standard deviation for each measurement point is six times the repeatability indexing accuracy of the repeatability indexing accuracy for each measurement point when the average of all measurement points is taken into consideration.

In order to determine the accuracy of the rotary table, the time it takes to return to its starting position must be measured.

In this operation, a return-to-origin operation is performed from seven arbitrary positions, and the stop position is determined by determining the largest difference read as the precision of the return-to-origin operation, and then using that difference read as the stop position as the stop position. Using this technique, it is possible to determine whether or not a return to origin procedure was carried out correctly in a given situation or situation.

Take note that the current detection of positioning accuracy is performed under conditions of rapid and precise positioning, and that both the accuracy of positioning and the speed with which it is performed are being measured. Different feed speeds used for positioning on the same machine on some cnc milling milling parts milling services machines with poor feed systems will result in different positioning accuracy values for the same machine on those machines. As a result of these and other considerations, the precision with which positioning accuracy measurements are performed is affected by a variety factors, such as the temperature of the surrounding environment and the condition of the coordinate axis. A semi-closed loop system is now standard equipment on the vast majority of cnc milling parts machine tools available on the market, and it is becoming increasingly popular. As a result of having the vast majority of position detection components installed in the drive motor, the drive motor has the lowest possible error of 0.010.02mm over a 1m stroke for the duration of a 1m stroke for the duration of a drive motor. The fact that this has happened should not be a surprise to anyone. It has been discovered that thermal elongation has introduced this type of error into the system, which has caused it to malfunction. During periods when the machine tool is not in use, some machines employ this technique to lessen the impact of its operation on the surrounding environment.

This makes it the most fundamental of all accuracy indices, as it represents the position of each coordinate axis at the most fundamental level of accuracy. This parameter evaluates both the precision with which the axis moves and the stability of the axis in its movements and rotations. It is measured in degrees of precision. As things stand, a machine tool that is inaccurate cannot be used in a production environment with any degree of consistency, according to the current state of affairs. In addition to compensating for pitch and backlash errors, modern numerical control systems can also compensate for other system errors that have an impact on the movement accuracy of each ejector mark on an ongoing basis. By using modern numerical control systems, it is possible to compensate for pitch and backlash errors on an ongoing basis as well as for other system errors in real time. As a result of the increasing number of functions available, numerical control systems are becoming increasingly capable. It is only random error, as well as the repeatability of the positioning accuracy measurements, that cannot be compensated in this manner, and these are both critical. In the absence of a method of compensating for the comprehensive random error of the feed drive mechanism, this value represents only the error that cannot be corrected by the numerical control system compensation and, therefore, must be recorded separately. Because it is the only part of the feed drive chain that can be fine-tuned and corrected if any component of the chain becomes out of tolerance during the manufacturing process, the feed drive chain is the most important part of the chain to understand. In the case of the other components of the feed drive chain, this is not true. To maximize repeat positioning accuracy, it is preferable to use a machine tool that has high repeat positioning accuracy and can be selected if one is available and available to do so is selected.


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By ndpetrify4
Added Jan 6 '22

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