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An online measurement error of the new method of plane

For, if not in the same straight line any given three coordinates, then to ~ The decision flatness error. (Example: set measurement points \into a column full rank matrix when measured lengthwise three lines 00OO1001O1O10O1-02011-01210-10010-20010-101O0 4 Hao groups: an on-line measurement of the new method of flatness error is 5 three point group, the matrix is mine (3 (Ⅳ A 1)) lines (Ⅳ. a 1 + (Ⅳ-1)-1) column matrix (Ⅳ A 3) the solution vector for a press type compression port (2 Ⅲ 221222d11.dl2dd, △ l2, △} 1 ) (6) is (Ⅳ a 1 + (Ⅳ A 1) A 1)-dimensional column vector of the solution to find the solutions of the following formula called the two-dimensional vector of the most zJ ~ - by successive two-point method port = A I T A z (7) of the Act to reduce the impact of random errors, not only the flatness error can be obtained, and can find the guide of the translational gap. using equation (7) obtained in 2 planes form error is a 2 - M 10 under the conditions of flatness error, which is based on three far points of the assessment of Plane 2,[link widoczny dla zalogowanych], the process of measuring devices and automatic measurement of the experimental system shown in Figure 5. Figure 5 flat panel flat on the lathe small slip will three probes (eddy current sensor WT01) three vertex position by right-angled triangle pieces installed in the folder, the folder block fixed to the pole, the pole from the three-jaw chuck, and to ensure that the following conditions: a. three probe axis parallel to each other; b. three axis machine tool probe the large and small slide plate and perpendicular to the sliding plate when the machine moves along the rail, when the amount of movement equal to the two-probe X direction spacing, a signal sent by the optical sensor, the signal indicator A / D data acquisition board. When the table finish after a specified distance (the distance from the sampling points and the x direction the distance between the two probe decision), table and back to to the initial position, the slide with a small flat plate measured move Y to the distance between the two probes, and then to collect data along the X,[link widoczny dla zalogowanych], the output signal through the transformation, zoom in t into the low-pass filter to reduce noise, filter received signal after A / D board computer until last in three coffins-channel data acquisition of the entire flat two-dimensional least squares by the end of the computer according to two law Huan measurement principle, the collected data are analyzed, by rail in both directions and the workpiece surface error,[link widoczny dla zalogowanych], and display and print the results. 3 a. measurement and accuracy analysis of the measured surface flatness error: 18.124 '6 Mm flatness error of this uncertainty: o. 6701m do not meet standards to determine Taiwan: Cross guidelines for feature point; high of 1: (88,17,8.82 ~ 11.02) High Point 2: (0,68,0. OO-u.O2) low 1 : (0,17, one by one for a 9.83 7.10) low of 2: (66,68. A 17.76 eleven 7.20) b. flat surface composed of Machine Tool Error: 10.4535 This plane error Cape uncertainty: 0.9490.am character sets guidelines for the criteria of cross-feature points: the high point of L: (66tu plant 014.03-11.52) High Point 2: (0,51,3 .26-1.52) low of 1: (22-1711.05 eleven g.9 Cool

low of 2: (66,[link widoczny dla zalogowanych],51. A 10.14 9.98 one by one) to prove in the measurement system under dynamic conditions Measuring the effectiveness of flatness error, the same experiments were repeated 16 times, measurement results are as follows: the measured error of the surface of the plane: = 18.01.amd0.87, am limit of measurement error: ± 2 a ± 1. 7Mm machine constitute the two rail flatness error: = 10.415Mm limit of error of measurement of a 0.93 \Indicators reflecting the traditional measurement of workpiece flatness error,[link widoczny dla zalogowanych], respectively, using 25 g point method and point method. Be the measured surface error of the plane were, _n16.59, am meet criteria line, 5 = 18.84m character sets guidelines for cross-comparison measurements visible. Measured using traditional methods of workpiece flatness error and two successive two-dimensional least squares results measurement system to measure very similar criterion is also the same nine methods vary greatly with them, the main points are too few measurements , as well as some important information missing), the Commission confirmed the fact that two successive two-dimensional least squares principle and measuring method of measuring the feasibility of the system (the transfer Velvet 9)

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