TW200947354A - System and method for analyzing a profile tolerance of an object - Google Patents

Abstract

A method for analyzing a profile tolerance of an object is disclosed. The method includes steps of obtaining theoretical profile data of the object and measuring data of measuring points of the object; setting a tolerance and a precision for calculating the profile tolerance of the object; calculating moving distances on X-axis and/or Y-axis of each of the measuring points if the measuring points need move; calculating rotated angles of each of the measuring points if the measuring points need rotate; calculating coordinate values of each of the measuring points after moving and rotating according to the calculated moving distances and rotated angles; calculating minimum errors of each of the measuring points according to the coordinate values; calculating the profile tolerance and a residual error of the object according to the minimum errors. A related system is also disclosed.

Description

200947354 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a profile analysis system and method. [Prior Art]; Image Measurement is currently the most widely used measurement method in the field of precision measurement. This method is not only highly accurate, but also has a fast measurement speed. Image measurement is mainly used for measuring the dimensional error and shape error of parts or components, which plays an important role in ensuring the quality of the product. However, the error given by the conventional image measuring system is only a general error range, and the error range of each measuring point cannot be expressed intuitively. At the same time, the contour calculation of the conventional image measuring system is very simple and cannot be different according to the user. The requirements are calculated for the profile of different benchmarks. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a profile analysis system and method, which can perform different profile calculations according to different needs of users, and intuitively express the error condition of each measurement point. A profile analysis system includes a computer and a database connected to the computer, the computer comprising: an acquisition module for acquiring all theoretical contour data and measurement point data of the object to be contoured from the database a setting module for setting a tolerance and an accuracy of the contour calculation; a translation module, configured to sequentially measure each measurement point according to the set accuracy when the acquired measurement point needs to be translated to the theoretical contour The theoretical contour is translated, and the distance of each measured point after translation is recorded relative to the theoretical contour translation; the setting module is further used when the obtained measuring point does not need to theoretical contour 200947354

When translating, 'the translation distance of each measurement point relative to the theoretical contour is set to zero; the rotation module is used to sequentially adjust the amount according to the accuracy of the setting when the obtained material is to be produced. The measuring point rotates to the theoretical wheel gallery, and the travel record records the angle of rotation of each measuring point relative to the theoretical contour; the setting module is further configured to: when the measuring point does not need to rotate to the theoretical contour, The rotation angle of the theoretical contour is set to zero; and the calculation module is configured to sequentially calculate the coordinates of the points after the translation and rotation of each measurement point according to the distance of the measurement points relative to the theoretical contour translation and the rotation angle. Calculating a minimum error distance of each measurement point according to the distance between the translated and rotated points to the theoretical contour, and calculating a contour degree and a residual of the measured object according to the minimum error distance of the all measurement points. A method for analyzing the degree of rotation, the method comprising the steps of: obtaining, from the data, all the theoretical and temple data of the object to be subjected to the contour calculation and the tolerance and accuracy of the data of the β and the wheel 靡When the acquired measurement point needs to be translated to the theoretical contour, according to the precision of the setting, the respective measurement points are moved to the rational _ rim, and the measured measurement points are compared with the theoretical round temple. The distance of translation, when the acquired measurement point does not need to translate to the theoretical contour, 'set the translation distance of each measurement point relative to the theoretical contour to zero; when the acquired measurement point needs to be rotated to the theoretical contour According to the accuracy of the setting, the measuring points are sequentially rotated to the theoretical contour, and the angle of each measuring point relative to the theoretical rim is recorded; when the measuring 黠 does not need to rotate to the theoretical contour, each measurement is performed. The rotation angle of the point relative to the theoretical contour is set to zero; and the translation and rotation of each measurement point are sequentially calculated according to the distance of the respective measurement points relative to the translation of the theoretical contour and the angle of rotation 9 200947354 'According to The minimum error distance of the translated and rotated points to the =(10) measuring point of the theoretical contour, and the contour and residual of the measured object are calculated according to the minimum & Compared with the prior art, the rim degree analysis system and method can perform different trajectory calculations for different needs of the household, and intuitively record the mis-recording condition of the mother-measurement point, so that the guards can quickly Make targeted improvements and improve work efficiency.

[Embodiment] FIG. 1 is a system architecture diagram of a preferred embodiment of the profile analysis system of the present invention. The system mainly includes computer workers, database 2, display 3, = disk 4 and mouse 5. The database 2 is used to store the theoretical corridor data of the measured object and the various measurement point data. The computer 1 is connected to the database 2, and is used for acquiring the theoretical contour data of the object to be subjected to the contour calculation in the database 2 and the data of each measuring point. The user selects the corresponding calculation method according to different needs of the user to calculate the object. The minimum error distance of the measuring point relative to the theoretical contour, and the contour of the object according to the maximum and minimum values of the minimum error distance of all the measured points. The display 3, the keyboard 4 and the mouse 5 are respectively connected to the host computer i for inputting and outputting data during the contour calculation of the object. As shown in Figure 2, it is a functional module diagram of the computer in Figure i. The computer tool includes an acquisition module 10, a setting module 12, a determination module 14, a translation module 16, a rotation module 18, a calculation module 20, and a display module 22. The acquisition module 10 is configured to acquire all theoretical contour data and measurement point data of the object to be contoured from the database 2. The contour 200947354 includes a calculation method without a reference requirement, an axis-based calculation method, and a base _meter# material: = each measurement point is at the coordinate value of the -== sage material and according to the object after translation and rotation ί= Calculate the rim degree; the calculation method based on the axis is to calculate the coordinate value of each measurement point of the object on the χ axis or ❹ close to the theoretical rim data, and calculate according to the translated object = 7 coordinate value of the coordinate value; Based on the plane material calculation method, the various objects of the heart-shaped object can ride the translation and the woman, and directly calculate the coordinate value of each measurement point coordinate value. The theoretical contour data refers to the theoretical size f material given at the time of design, and the theoretical contour can be a point, a straight line, and an arc. The measurement point data refers to a coordinate value of all measurement points on the object measured when the object is image-measured, and the coordinate is a two-dimensional coordinate. The setting module 12 is used to set the tolerance, accuracy ❹ and error magnification of the contour calculation. The tolerance refers to the error range allowed by the contour calculation result; the accuracy refers to the number of digits after the decimal point which is accurate to the contour calculation result; the error magnification refers to when the error is very small, the Error amplification is used to express this error more intuitively, and the magnification can be 1-100 times. The determining module 14 is configured to determine whether the acquired measuring point needs to f to the theoretical contour. When the degree of calculation required by the user is a non-reference requirement or an axis-based calculation mode, the judging module 14 judges that the measurement point taken by the _ needs to be translated to the theoretical contour; when the user desires the rim degree 11 When the calculation method of 200947354 is a plane-based calculation mode, the determination module 14 determines that the acquired measurement points do not need to be translated to the theoretical contour. The panning module 16 is configured to sequentially shift the measuring points to the theoretical contour when the acquired measuring points need to be translated to the theoretical contour, and the distance from the measuring point to the theoretical contour after the translation is sufficiently small to When the set accuracy requirement is reached, the distance that the translated measurement point moves on the X-axis and/or the ¥-axis is recorded. When the selected contour degree calculation method is the axis-based calculation method, the measurement point can move on the X-axis or the γ-axis; when the selected contour degree calculation method is the calculation method without the reference requirement, the measurement point It can move on the X and γ axes. The translation method is: halving the distance from the measurement point to the theoretical contour, for example: 1 〇 aliquot, calculating the distance from each part of the aliquot to the theoretical contour, obtaining the portion with the smallest distance, and then minimizing the distance The part is equally divided, and the distance from each part of the part to the theoretical contour is calculated, and the part with the smallest distance is obtained, and the recursive operation is performed by analogy. When the distance from the measured point to the theoretical contour is small enough to achieve the set When the accuracy requirement is ❹, the distance at which the measurement point moves on the X-axis and the γ-axis is recorded. The setting module 12 is further configured to set the moving distance of each measuring point on the X-axis and the γ-axis to 0 when the acquired measuring points do not need to be translated to the theoretical contour. The determining module 14 is further configured to determine whether the acquired measuring point needs to be rotated to the theoretical contour. When the calculation method of the contour degree is no reference requirement, the determination module 14 determines that the acquired measurement point needs to be rotated to the theoretical contour; when the calculation method of the contour degree is a plane-based or axis-based calculation method, the judgment module 14 determining that the acquired measurement point does not need to be rotated to the theoretical contour 12 200947354.

The rotation module 18 is configured to sequentially use the measurement points as the center of the measurement points when the acquired measurement points need to be rotated to the theoretical contour, and use the distances of the measurement points from the measurement points to the center point of the theoretical contour as a radius. Rotate the z-axis perpendicular to the plane of the measurement point. 'When the distance from the measured point to the theoretical rim is small enough to meet the set accuracy requirements, record the measured point around the Z-axis. The angle of rotation. The method of rotating is: dividing the measuring point by a 360 degree angle of one rotation around the z-axis, for example: 1 〇 aliquot, calculating the distance from each part of the aliquot to the theoretical contour, and obtaining the portion with the smallest distance, and then The part with the smallest distance is equally divided, and the distance from each part of the equal part to the theoretical rim is calculated, and the part with the smallest distance is obtained, and the recursive operation is performed by analogy, and the distance from the measured point to the theoretical contour is sufficiently small after the rotation. When the accuracy requirement of the user setting is required, the angle at which the measuring point is rotated at this time is recorded. The setting module 12 is further configured to set the rotation angle of each measuring point to 当 when the measuring point does not need to rotate to the theoretical rim. The calculation module 20 is configured to sequentially calculate the Kangxi calculation of the points after translation and rotation of each measurement point according to the angles of the separation and rotation of the theoretical contours.

0 10 0 ί Cos(a) Sin(a) Ο -Sin(a) Cos(a) Ο Ο

Ο [Χ,Υ,Ζ»1] sfX,y,Z,1^ I 0 0 1 V Lx Ly Ο Ο

Ο Ο 1 〇 Ο

Where X, y in [x, y, z, l] is the coordinate of the measuring point, ζ is ο, Lx 13 200947354 is the distance that the measuring point moves on the X axis, and Ly is the measuring point moving in the γ axis The miscellaneous 'a is the angle at which the measuring point is rotated toward the theoretical contour, and X in the [Χ, Υ, Ζ, 1], Υ is the coordinate after the translation point is translated and rotated. < The calculation module 20 is further configured to calculate a minimum error distance of each measurement point according to the distance between the translation and the rotated point theory contour. When the projected and rotated points are projected onto the theoretical contour on the theoretical contour, the distance from the translated and rotated points to the theoretical contour is calculated as the minimum error distance of the corresponding measuring point; when translated and rotated When the projection of the point on the theoretical contour is not on the theoretical contour, the nearest distance from the point of the translation and rotation to each end point of the theoretical contour is calculated as the minimum error distance of the corresponding measurement point. The calculation module 20 is further configured to calculate the contour and the residual of the measured object according to the minimum error distance of all the measured points. The contour is the sum of the absolute values of the maximum and minimum values of the minimum error distances of all the measured points, which is the sum of the absolute values of the minimum error distances of all the measured points. The judging module 14 is further configured to judge whether the calculated contour of the crucible is qualified according to the set tolerance. When the calculated contour degree is within the set tolerance range, it is judged that the calculated contour degree is acceptable; when the calculated contour degree is not within the set tolerance range, it is judged that the calculated contour degree is not coincident. The display module 22 is configured to display, on the measured image of the object, the calculated minimum error distance, the contour value, and the residual of each measured point when the calculated rim degree is acceptable, and "pass" is displayed. The display module 22 is further configured to: when the calculated contour degree is unsatisfactory, display the calculated minimum error distance, the contour value, and the residual of each measured point on the measurement image of the object, And display "fail". 14 200947354 As shown in Fig. 3, it is a flowchart of the operation of the preferred embodiment of the profile analysis method of the present invention. In step S10, the acquisition module 10 acquires all theoretical contour data and measurement point data of the object to be contoured from the database. In step S12, the setting module 12 sets the tolerance, the accuracy and the error magnification of the contour calculation. Step S14

The judging module 14 judges whether the acquired measuring point needs to be translated to the theoretical contour. When the degree of contour required by the user is calculated as a no-reference requirement or an axis-based calculation mode, the Lang module 14 determines that the acquired point needs to be translated to the theoretical contour; when the user desires the calculation of the degree of the corridor When the mode is a plane-based calculation method, the measured points acquired according to (4) need not be translated to the theoretical contour. Step S16, when the acquired measurement point needs to be translated to the theoretical wheel gallery, the translation module 16 translates the measurement points to the theoretical plane, and the distance from the subsequent measurement point to the theoretical wheel IP is small. When the second requirement is reached, the distance of the measured point after the translation is recorded at χ. When the selected profile calculation method is based on (4), the measurement moves on the χ axis or the 叫 axis; when the selected profile ί mode is the calculation method without the reference requirement, the quantity can be on the X axis and the Υ axis The method of moving the translation is as follows: the distance from the measurement point to the theoretical contour is equal to 77, for example, 10 equal parts, and the distance from each part to the theoretical rim after the division is calculated, (4) the smallest material of the lin, and then the county The small part is equal to 77 彳 and then the distance from each part of the knife to the theoretical contour, and the minimum distance of the heart is obtained. According to the recursive operation, when the translation is shifted to the theoretical contour, the rotation is small enough to achieve the set. When the accuracy requirement is 15 200947354, the distance at which the measurement point moves on the x-axis and the γ-axis is recorded. In step S18, when the acquired measurement points do not need to be shifted to the theoretical contour, the setting module 12 sets the moving distances of the respective measuring points on the X-axis and the x-axis to *0. In step S20, the judging module 14 judges whether the acquired measuring point needs to be rotated to the theoretical contour. When the calculation method of the contour degree is no reference requirement, the judging module 14 judges that the acquired measurement point needs to be rotated to the theoretical contour; when the calculation method of the contour degree is based on the plane or the axis-based calculation method, judging The module 14 determines that the acquired measurement points do not need to be rotated to the theoretical contour. Step S22, when the acquired measurement points need to be rotated to the theoretical contour, the rotation module 18 sequentially takes the measurement points as the center of the circle, and takes the distances of the measurement points from the measurement points to the center point of the theoretical contour as a radius. The axis of rotation perpendicular to the plane of the measuring point is rotated. When the distance from the measured point to the theoretical contour is sufficiently small to achieve the set accuracy requirement, the amount of the rotated G is recorded to rotate around the axis. Angle. The method of rotating is: dividing the measuring point by 360 degrees of one rotation around the Ζ axis, for example: 10 equal parts, calculating the distance from each part of the aliquot to the theoretical contour, and obtaining the portion with the smallest distance, and then The smallest part is equally divided, the distance from each part of the distance to the theoretical contour is calculated, and the part with the smallest distance is obtained, and the recursive operation is performed by analogy. When the distance from the measured point to the theoretical contour is small enough to reach the When the accuracy of the setting is required, the angle at which the measuring point is rotated at this time is recorded. In step S24, when the measuring point does not need to be rotated to the theoretical contour, the setting module 12 sets the rotation angle of each measuring point to zero. 16 200947354 Step S26, the calculation module 20 sequentially calculates the coordinates of the points after the translation and rotation of each measurement point according to the distance of the measurement points from the theoretical measurement points and the angle of rotation. The formula for the nose is

0 0 1 V. Lx Ly 0

[Χ, γ, ζ, ΐ] = [x, y, z, i]*

i Cos(a) Sin(a) 0 0 -Sin(a) Cos(a) 0 0

❹ where x, y in [x, y, z, l] are the coordinates of the measurement point, z is 0 ' Lx is the distance the measurement point moves on the X axis, and Ly is the measurement point moving on the Y axis Distance, a is the angle at which the measuring point rotates to the theoretical contour, and X in the [Χ, Υ, Ζ, 1], Υ is the coordinate after the translation point is translated and rotated. In step S28, the calculation module 20 calculates the minimum error distance of each measurement point according to the distance from the translated and rotated points to the theoretical contour. When the projected and rotated points are projected onto the theoretical contour on the theoretical contour, the distance from the translated and rotated points to the theoretical contour is calculated as the minimum error distance of the corresponding measuring point; when translated and rotated When the projection of the point on the theoretical contour is not on the theoretical contour, the nearest distance from the point of the translation and rotation to each end point of the theoretical contour is calculated as the minimum error distance of the corresponding measurement point. In step S30, the calculation module 20 calculates the contour and the residual of the measured object according to the minimum error distance of all the measured points. The contour is the sum of the absolute value of the minimum and minimum values of the minimum error distances of all the measured points, which is the sum of the absolute values of the minimum error distances of all the measured points. In step S32, the judging module 14 judges whether the calculated contour degree is qualified according to the set tolerance. When the calculated contour degree is within the set tolerance range 17 200947354, it is judged that the calculated contour degree is qualified; when the calculated contour degree is not within the set tolerance range, it is judged that the calculated contour degree is unqualified. Step S34, when the calculated contour degree is passed, the display module 22^ displays the calculated minimum error distance, the contour value and the residual of each measured point on the measurement image of the object, and displays "pass". Step S36, when the calculated contour degree is unsatisfactory, the display module 22 displays the calculated minimum error distance, the contour value and the residual 0 of each measured point on the measurement image of the object, and "fail" is displayed. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a hardware architecture diagram of a preferred embodiment of the profile analysis system of the present invention. Figure 2 is a functional block diagram of the computer of Figure 1. Fig. 3 is a flow chart showing the operation of the preferred embodiment of the profile analysis method of the present invention. [Description of main component symbols] Computer 1 acquisition module 10 setup module 12 judgment module 14 translation module 16 rotation module 18 calculation module 20 display module 22 acquires all theoretical contour data and quantities of contour analysis objects Measuring point 18 200947354 Data S10 Set the tolerance, accuracy and error magnification of the contour calculation S12 Whether the acquired measuring point needs to shift to the theoretical contour S14 to sequentially shift the measuring points to the theoretical contour according to the set accuracy. And record the translation of the amount of coffee relative to the theoretical wheel dissociation of the lin (10) set the distance of each ray / miscellaneous movement in the X axis or γ axis as G S18 whether the obtained measurement point needs to rotate to the theoretical wheel temple S2 〇

According to the accuracy of the setting, the measuring points are sequentially rotated to the theoretical wheel, and the angle s22 of each measuring point with respect to the theoretical contour is recorded, and the rotation angle of each measuring value is set to 〇S24 according to the respective measuring points. The distance to the theoretical contour and the angle of rotation are calculated by the person. The coordinate S26 of the point after translation and rotation of each measuring point is calculated. The minimum error distance of each measuring point is calculated according to the distance from the translated and rotated point to the theoretical contour. S28: calculating, according to the minimum error distance of all the measurement points, the measured object profile and the residual 'S30 S32, whether the calculated contour degree is qualified S34, and displaying the minimum error distance, the contour value and the residual颉On the direct image of the object 'and display 'pass' to display the minimum error distance, contour value and residual on the measurement image of the object' and display “fail” 19

Claims (1)

200947354 X. Patent application scope: 1. A profile analysis system 'includes a computer and a database connected to the computer'. The computer includes: an acquisition module 'for acquiring objects for which contour calculation is to be performed from the database All theoretical contour data and measurement point data; setting module for setting tolerance and accuracy of contour calculation; translation module for using when the acquired measurement point needs to be translated to the theoretical contour The precision degree shifts the measurement points to the theoretical contour in turn, and records the distance between the translated measurement points and the theoretical contour translation. The setting module is further used when the acquired measurement points do not need to be When the theoretical contour is translated, 'the translation distance of each measurement point relative to the theoretical contour is set to zero; the rotation module is used to sequentially rotate each of the acquired measurement points to the theoretical contour according to the set precision The measuring point rotates to the theoretical contour, and records the angle of rotation of each measuring point with respect to the theoretical contour; the setting module is further used when the measuring point does not need to be rational When the contour is rotated, the rotation angle of each measurement point relative to the theoretical contour is set to zero; and the calculation module is configured to sequentially calculate each measurement according to the distance of the measurement points relative to the theoretical contour translation and the rotation angle Point-translation and rotation of the point of the point, calculate the minimum error distance of each measurement point according to the distance from the translation and the rotated point to the theoretical contour, according to the minimum error distance of all the measurement points Measure the contour and residual of the object. 20 200947354 2 The contour analysis system described in item yi of the scope of the application, the system further comprises: , T for judging the calculated face according to the set tolerances, and the width of the item (4) Sub-(4) system, in which the attack contour calculation method includes: helmet Ο ο 4 based on the axis (four) calculation method and the base dry mode, the m_1 _ (four) _ degree pure system, the minimum error distance of the complex middle and ϊ === The sum of absolute values. The residual of jin 4 is the minimum of all measurement points. 5. If the patent application range is i-th to the ==:==2:== will =: the distance from each part to the theoretical rim after aliquot, eight, point translation To the part with the smallest distance; then divide the part 77 with the smallest distance into equal parts, calculate the distance from each part of the part to the theoretical contour, the amount of the word and the point where the I point is translated to the smallest distance after the equal division; Move the steps until the distance from the measurement point to the theoretical contour is small enough to meet the set accuracy requirements. The contour analysis system of the patent application scope of claim 4, wherein the rotation module rotates each measurement point to the second contour according to the following steps: measuring As the center of the circle, the distance from the measured point to the center point of the theoretical contour is taken as the radius; the measuring point 21 200947354 is equally divided by the angle of one rotation, and the distance from each part to the theoretical contour after the equal division is calculated, and the measuring point is rotated. To the part with the smallest distance; then divide the part with the smallest distance into equal parts, calculate the distance from each part of the equal part to the point of the contour, and rotate the measuring point to the minimum distance after the equal division; The above rotation step until the distance from the measurement point to the theoretical contour is sufficiently small to achieve the set accuracy requirement. 7. A method for contour analysis, the method comprising the steps of: & obtaining all theoretical contour data and measurement point data of an object to be contoured from the database; setting tolerances and accuracy of contour calculation; When the acquired measurement points need to be translated to the theoretical contour, the measurement points are sequentially translated to the theoretical contour according to the set precision, and the distance between the translated measurement points and the theoretical contour translation is recorded; When the acquired measurement points do not need to be translated to the theoretical contour, the translation distance of each measurement point relative to the theoretical contour is set to zero; G. When the acquired measurement points need to be rotated to the theoretical contour, according to the accuracy of the setting Degreely rotates each measuring point to the theoretical contour, and records the angle of rotation of each measuring point with respect to the theoretical contour; when the measuring point does not need to rotate to the theoretical contour, the measuring points are relative to the theoretical contour The rotation angle is set to zero; and the translation and rotation of each measurement point are sequentially calculated according to the distance of the respective measurement points relative to the theoretical contour translation and the rotation angle The coordinates of the point, the minimum error distance of each measuring point is calculated according to the distance from the translated and rotated points to the theoretical contour, and the contour of the measured object is calculated according to the minimum error of all the measuring points 22 200947354 distance And residuals. 8. The profile analysis method according to claim 7, wherein the method further comprises the step of: 'determining whether the calculated profile is acceptable according to the set tolerance. 9. The profile analysis method according to claim 7 or 8, wherein the step of shifting each measurement point to the theoretical contour comprises the steps of: ^ measuring the distance from the measurement point to the theoretical contour Perform an equal division, calculate the distance from each part of the 等 part to the theoretical contour, and translate the measurement point to the part with the smallest distance; then divide the part with the smallest distance into equal parts, and calculate each part after the aliquot to the theoretical contour Distance, the measurement point is translated to the portion with the smallest distance after re-equalization; the above translation step is repeated until the distance from the measurement point to the theoretical contour is sufficiently small to achieve the set accuracy requirement. The method of contour analysis according to claim 7 or 8, wherein the step of rotating each measuring point to the theoretical contour comprises the steps of: measuring the point as a center and measuring The distance from the point to the center point of the theoretical contour is taken as the radius; the measuring point is equally divided by the angle of one rotation, the distance from each part of the equal part to the theoretical contour is calculated, and the measuring point is rotated to the portion with the smallest distance; The smallest part is equally divided, and the distance from each part 23 200947354 to the theoretical contour is calculated, and the measuring point is rotated to the portion with the smallest distance after re-equalization; the above rotating step is repeated until the measuring point reaches the theoretical contour The distance is _ small enough to meet the accuracy requirements set. twenty four