# US 9,864,367 B2 · Straightness management system and control method thereof for mounting pin > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,864,367 B2 - Document ID: US9864367B2 - Status: Granted - Kind: B2 - Application number: 14/488,692 - Filed: 2014-09-17 - Published: 2015-10-01 - Granted: 2018-01-09 - Earliest claimed: 2014-03-25 - Assignees: Hyundai Motor Company - Applicants: Hyundai Motor Company - Inventors: Soo Jeong Heo - Web page: https://patentgrep.com/patent/US9864367B2 ## CPC - G05B 19/41875: {characterised by quality surveillance of production} - G06F 17/10: Complex mathematical operations {(function generation by table look-up G06F1/03; evaluation of elementary functions by calculation G06F7/544)} - G05B 2219/37197: From measured data derive form, roundness, orientation, parallel, straightness - Y02P 90/02: Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS] - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A mounting pin straightness management system is provided. The system includes a sensor unit that is configured to measure 3-dimensional coordinates (a(Ta, La, Ha), b(Tb, Lb. Hb)) for a first and a second center point (a, b) of two approximate circles formed from intersections of an exterior surface of the at least one mounting pin and two parallel planes (PA and PB) perpendicular to a target length direction of the at least one mounting pin and spaced apart at a predetermined distance (H) from each other. A controller is configured to calculate a straightness index (S.I.) related to a maximum distance (Lmax) between the first and the second center point under a straightness management tolerance (r) and an actual distance (Lactual) between the first and the second center point by receiving the 3-dimensional coordinates of the first and the second center point from the sensor unit. ## Claims ### Claim 1 A mounting pin straightness management system that calculates and manages straightness index of at least one mounting pin by measuring 3-dimensional coordinates of center points of the at least one mounting pin, the mounting pin straightness management system comprising: a sensor unit configured to measure 3-dimensional coordinates for a first and a second center point (a, b) of two approximate circles formed from intersections of an exterior surface of the at least one mounting pin and two parallel planes (PA and PB) perpendicular to a target length direction of the at least one mounting pin and spaced apart at a predetermined distance (H) from each other; and a controller configured to control a sensor moving device which moves the sensor unit to a predetermined position during a measurement, wherein the controller is further configured to calculate a straightness index (S.I.) related to a maximum distance (Lmax) between the first and the second center point under a straightness management tolerance (r) and an actual distance (Lactual) between the first and the second center point by receiving the 3-dimensional coordinates of the first and the second center point from the sensor unit, wherein the S.I. is calculated from S . I . = L actual - L min L max - L min , where Lmin=H. ### Claim 2 (depends on 1) The mounting pin straightness management system of claim 1, further comprising: a basic information/process controller configured to provide the controller with basic information regarding a measurement body at which the at least one mounting pin is mounted or transmit a starting signal of a measuring operation to the controller. ### Claim 3 (depends on 1) The mounting pin straightness management system of claim 1, further comprising: a warning device configured to transmit a warning to the controller when the S.I. exceeds a predetermined straightness tolerance or at least one of the first and the second center point is disposed beyond a corresponding first or second management circle (CA, CB). ### Claim 4 (depends on 1) The mounting pin straightness management system of claim 1, wherein the controller is configured to calculate an inclined direction vector (ab) formed by projecting a connecting line of the first and the second center point onto any one of the two planes (PA and PB); and wherein the management system further includes a monitor unit configured to output the Lactual, the S.I., or the inclined direction vector ab to a screen. ### Claim 5 (depends on 1) The mounting pin straightness management system of claim 1, wherein the controller is further configured to control the sensor moving device to move the sensor unit to an original position after the measurement finishes. ### Claim 6 (depends on 1) The mounting pin straightness management system of claim 1, wherein the sensor unit includes a 3-dimensional laser sensor. ### Claim 7 (depends on 5) The mounting pin straightness management system of claim 5, wherein a pair of left and right mounting pin are installed symmetrically, and wherein left and right sensor units and left and right sensor moving devices respectively form a pair corresponding to the pair of the mounting pins and are configured to operate simultaneously. ### Claim 8 A control method of a mounting pin straightness management system calculating and managing straightness index of at least one mounting pin by measuring 3-dimensional coordinates for center points of the at least one mounting pin, wherein the control method of the mounting pin straightness management system includes: measuring, by a sensor unit, 3-dimensional coordinates of a first and a second center point (a, b) of two approximate circles formed from intersections of an exterior surface of the at least one mounting pin and two parallel planes (PA and PB) perpendicular to a target length direction of the at least one mounting pin and spaced apart at a predetermined distance (H) from each other; controlling, by a controller, a sensor moving device which moves the sensor unit to a predetermined position during a measurement; and calculating, by the controller, a straightness index (S.I.) related to a maximum distance (Lmax) between the first and the second center point under a straightness management tolerance (r) and an actual distance (Lactual) between the first and the second center point by receiving the 3-dimensional coordinates of the first and the second center point from the sensor unit, wherein the S.I. is calculated from S . I . = L actual - L min L max - L min , where Lmin=H. ### Claim 9 (depends on 8) The control method of the mounting pin straightness management system of claim 8, further comprising: determining, by the controller, whether the S.I. is within a predetermined straightness tolerance; determining, by the controller, whether both of the first and the second center point are within corresponding first and second management circle (CA, CB) respectively; and activating, by the controller, a warning device when at least any one of the two determinations is negative. ### Claim 10 (depends on 9) The control method of the mounting pin straightness management system of claim 9, further comprising: determining, by the controller, a measurement body at which the at least one mounting pin is mounted as an offline reexamination body when the warning device is activated or outputting contents of the determinations to a screen of a monitor unit. ### Claim 11 (depends on 8) The control method of the mounting pin straightness management system of claim 8, further comprising: calculating, by the controller, an inclined direction vector (ab) formed by projecting a connecting line of the first and the second center point onto any one of the two planes (PA and PB); and outputting, by the controller, the Lactual, the S.I., or the inclined direction vector (ab) to a screen. ### Claim 12 (depends on 8) The control method of the mounting pin straightness management system of claim 8, further comprising: collecting, by the controller, basic information regarding a measurement body from a basic information process controller; receiving, by the controller, a readiness signal of the sensor moving device or the sensor unit; transmitting, by the controller, a start order of a measuring operation to the sensor moving device or the sensor unit; and moving, by the controller, the sensor moving device to an original position after the measurement finishes. ### Claim 13 A non-transitory computer readable medium containing program instructions executed by a controller to calculate and manage straightness index of at least one mounting pin by measuring 3-dimensional coordinates of center points of the at least one mounting pin, the computer readable medium comprising: program instructions that control a sensor unit to measure 3-dimensional coordinates for a first and a second center point (a, b) of two approximate circles formed from intersections of an exterior surface of the at least one mounting pin and two parallel planes (PA and PB) perpendicular to a target length direction of the at least one mounting pin and spaced apart at a predetermined distance (H) from each other; program instructions that control a sensor moving device which moves the sensor unit to a predetermined position during a measurement; and program instructions that calculate a straightness index (S.I.) related to a maximum distance (Lmax) between the first and the second center point under a straightness management tolerance (r) and an actual distance (Lactual) between the first and the second center point by receiving the 3-dimensional coordinates of the first and the second center point from the sensor unit, wherein the S.I. is calculated from S . I . = L actual - L min L max - L min , where Lmin=H. ### Claim 14 (depends on 13) The non-transitory computer readable medium of claim 13, further comprising: program instructions that calculate an inclined direction vector (ab) formed by projecting a connecting line of the first and the second center point onto any one of the two planes (PA and PB); and program instructions that output the Lactual, the S.I., or the inclined direction vector ab to a screen. ### Claim 15 (depends on 13) The non-transitory computer readable medium of claim 13, further comprising: program instructions that control the sensor moving device to move the sensor unit to an original position after the measurement finishes. ### Claim 16 (depends on 13) The non-transitory computer readable medium of claim 13, wherein the sensor unit includes a 3-dimensional laser sensor.