 |
Wharbo Precision Manufacturing Co.,LtdChina precision machining parts manufacturer,Custom CNC machined parts supplier |
||||
Tech Info
Function of coordinate system in relative position measurement
As with CMM, the 2D projector has powerful detection capabilities that can detect multiple complex parameters of the machining workpiece, providing quality assurance for production. In some parts of the detection process, the use of second-dimensional image measuring instrument to achieve the first position measurement of the workpiece, is to test the function of the second element of the standard one of the imaging device. Therefore, a high-end image measuring instrument need to have the relative position of the workpiece detection function. So, how to use the 2D projector to complete the workpiece relative position detection?
In the measurement of complex workpieces, relative position measurements are often required. To measure a number of circular hole and the center hole along the baseline and its vertical distance (ie, the relative position relationship), the baseline for the circle 1 and circle 2 connection.
The most basic method of measuring with the image measuring instrument is to connect the circle 1 and the circle 2, and then construct the vertical line connecting the center circle and the two circle, calculate the circle 1, circle 2, circle 3, circle 4 and perpendicular , The distance obtained is the distance between the circle and the center circle in the horizontal direction. Then calculate the circle 3, circle 4 to circle 1 circle 2 connection distance, obtained by subtraction circle 3, circle 4 and the center circle in the vertical direction distance.
This method is relatively easy to understand, but the calculation steps are complicated, it is prone to calculation errors and so on. If you use the method of establishing coordinates to measure these dimensions, not only fast, but also simplify the measurement steps, the measurement efficiency is greatly improved.
The establishment of coordinate system, image measuring instrument generally there are several ways to determine the X-axis two points, two points to determine the Y-axis, three-point coordinate system established. The two most commonly used are the first two, is to determine the X axis as an example to measure the workpiece.
1, first of all the measured elements, round, arc, straight line out.
2, and then use two points to build X-axis coordinate system function, the coordinate system of the X-axis on a circle 1 circle 2 on the line.
3, the use of coordinate translation function, the coordinates of the origin set in the center circle, the center circle coordinates of the point is (0,0).
4. Click on any of the measured circles whose coordinates are (x, y), where x and y are the horizontal and vertical distances of the circle relative to the center circle.
This type of workpiece can not simply measure the center distance, the relative position relationship is the key to whether such parts can be assembled qualified.
The detection of the relative position of the workpiece is the second element of a basic image measuring instrument detection function, but also a very important detection function, a good second-dimensional imaging device can be perfect in the detection, which is every image measurement Instrument by the pursuit of goals.
In the measurement of complex workpieces, relative position measurements are often required. To measure a number of circular hole and the center hole along the baseline and its vertical distance (ie, the relative position relationship), the baseline for the circle 1 and circle 2 connection.
The most basic method of measuring with the image measuring instrument is to connect the circle 1 and the circle 2, and then construct the vertical line connecting the center circle and the two circle, calculate the circle 1, circle 2, circle 3, circle 4 and perpendicular , The distance obtained is the distance between the circle and the center circle in the horizontal direction. Then calculate the circle 3, circle 4 to circle 1 circle 2 connection distance, obtained by subtraction circle 3, circle 4 and the center circle in the vertical direction distance.
This method is relatively easy to understand, but the calculation steps are complicated, it is prone to calculation errors and so on. If you use the method of establishing coordinates to measure these dimensions, not only fast, but also simplify the measurement steps, the measurement efficiency is greatly improved.
The establishment of coordinate system, image measuring instrument generally there are several ways to determine the X-axis two points, two points to determine the Y-axis, three-point coordinate system established. The two most commonly used are the first two, is to determine the X axis as an example to measure the workpiece.
1, first of all the measured elements, round, arc, straight line out.
2, and then use two points to build X-axis coordinate system function, the coordinate system of the X-axis on a circle 1 circle 2 on the line.
3, the use of coordinate translation function, the coordinates of the origin set in the center circle, the center circle coordinates of the point is (0,0).
4. Click on any of the measured circles whose coordinates are (x, y), where x and y are the horizontal and vertical distances of the circle relative to the center circle.
This type of workpiece can not simply measure the center distance, the relative position relationship is the key to whether such parts can be assembled qualified.
The detection of the relative position of the workpiece is the second element of a basic image measuring instrument detection function, but also a very important detection function, a good second-dimensional imaging device can be perfect in the detection, which is every image measurement Instrument by the pursuit of goals.
【 Go Back 】 | 【 Print 】 | 【 Close this window 】
Copyright © Wharbo Precision Manufacturing Co.,Ltd All right reserved
