TW201430312A - Measurement method and device of irregular object size - Google Patents

Abstract

A measurement method and a device of irregular object size, to prepare a measurement device, the measurement device is provided with a mobile platform, a laser, a control group and a carrier platform. The dimensions of the measurement method and apparatus of an irregular object, to prepare a measurement device, the measurement device is provided with a mobile platform, a laser, a control group and a carrier platform. The laser group at the mobile platform offers a pair of opposing laser range finder, will be tested objects placed on the loading platform and go mobile to between two laser range finder. The Irregular surface of the measurement part placed on the loading platform and move to between two laser range finder, two laser range finder to move relative to the DUT part and send a signal to the control group processing and computing, and get the measurement results for archiving. Fit the coordinate system of the platform, and to draw out the contours of the size of the part to be measured. This system can provide a significantly improved measurement speed and efficiency and can improve the measurement accuracy of the irregular object size measurement method and device.

Description

Method and device for measuring irregular object size

The present invention relates to a size measuring method and apparatus thereof, and more particularly to a method and apparatus for measuring the size of an irregular object in a non-contact manner.

According to the traditional methods of detecting products, manual and contact measuring tools (such as resistance scales and optical scales) are used. The products can only be produced by sampling inspection when mass production. If the number of samples is too small, it is easy to have the pieces flow out. Conversely, if the number of samples is large, it will affect the shipping time and increase labor costs, and it is impossible to systematically save the measured values. Furthermore, contact probes have been used for testing. However, contact quantities The measurement is easy to be caused by the size of the probe, the size of the measuring tool, and the wear and tear during use. Therefore, it is impossible to measure the small size and the required size, which not only affects the subsequent dimensional error, but also cannot accurately grasp the diversity of the component size. Difficulties in subsequent assembly; in addition, there is also a single-sided size of the 3D object obtained by the radar scanning by the platform, but the full-area size of the 3D object cannot be obtained at one time, so that another object is placed on a rotating platform. And measure and record the 3D size of the object by a single laser and the rotating platform, but for large size and approximate flat objects It is more difficult to measure the line. In addition, the CCD can capture the image of the 3D object. In the measurement of the surface, a white paint should be sprayed on the surface to be tested and the coordinate point should be attached. However, this amount The measurement method not only destroys the original color of the object to be tested but also takes time, and can not instantly restore the color of the measured object, which not only increases the time required for the measurement, but also causes the life of the surface to be tested to be quickly consumed, thereby improving the processing. The cost required is something to be improved.

Therefore, in view of the lack and deficiency of the existing measurement methods and devices in actual operation, the present invention has finally developed an invention which can improve the existing defects, and the size of the irregular objects of the present invention. The measuring method and the device thereof adopt a non-contact laser ranging method to extract the contour, utilize the advantage that the laser is not restricted by the color of the object, and can detect the size and appearance of the object to be tested. After the object image is measured, the relevant information of the object to be tested is immediately provided, and the obtained data result is established according to the database, and the irregular 3D contour of the object to be tested is reconstructed through the software, so that the product of the same size and contour can be processed in the future. The invention provides a method and a device for measuring the size of an irregular object which can greatly improve the measurement speed and efficiency and can improve the measurement accuracy.

Based on the above object, the technical means used in the present invention is to provide a method for measuring the size of an irregular object, which comprises the following steps: instrument setting: preparing a measuring device, the measuring device is provided with a mobile platform a laser beam, a control group and a load platform, the mobile platform is provided with a frame body, a slide rail group on the top surface and the bottom surface of the frame body, and a drive group combined with the slide rail group. The laser group is provided with two laser range finder which is combined with the slide rail group to move relative to the mobile platform, and the control group is connected with the mobile platform and the laser group and is provided with the drive a connected controller and a computer connected to the controller and the two laser range finder, the computer is provided with a laser size measuring software, and the loading platform is laterally passed through the frame and is located in two lasers Between the distance meter and the controller; correcting operation: placing a standard block gauge on the loading platform for calibration, since the size of the standard block gauge is known, after being measured by two laser range finder And transmit the signal to the laser size Measurement software calculates, if the measured size of the obtained actual dimensions of the standard block gauge is the same, it means that two laser rangefinder correction has been completed; Measuring operation: placing an object to be tested on the loading platform and moving the frame to between two laser range finder, the host drives the driving group via the controller, and the two laser range finder As the slide group moves relative to the object to be tested, the distance signals captured by the two laser range finder are transmitted to the computer, and the laser size is measured by the laser size for the captured size and the two lasers. The distance measuring instrument and the coordinate of the loading platform are processed and calculated to obtain the size of each position of the object to be tested; and the contour drawing: when the two laser range finder measures the object to be tested, The obtained measurement results are archived, and the size of the object to be tested can be drawn by calculating the size of the two laser rangefinders and the coordinates of the platform.

Further, in the step of the measuring operation, the scanning and the amount of the entire object to be tested are scanned by the two laser range finder moving relative to the object to be tested and the movement of the loading platform relative to the two laser range finder Measurement.

The present invention further provides an apparatus for measuring the size of an irregular object, comprising: a mobile platform, a laser group, a control group and a loading platform, wherein: the mobile platform is provided with a frame body, and the frame is disposed on the frame a slide group on the body and a drive group disposed on the frame for driving the movement of the slide group; the laser group is combined with the mobile platform and provided with two laser range finder, two lasers The range finder is respectively fixed on the two rail seats of the slide rail group and facing each other; the control group is connected to the mobile platform and the laser group, and is provided with a controller and a computer, and the controller and the drive The group is connected, and the computer is connected to the controller and is provided with a laser size measuring software; and the load platform is laterally passed between the two laser rangefinders and is connected to the controller connection.

Further, the slide rail group is provided with an upper rail, a lower rail and a two rail seat, wherein the upper rail and the lower rail are respectively fixed on the top surface and the bottom surface of the frame body, and the two rail seats are respectively disposed on The driving unit is slidably disposed on the two rails. The driving unit is provided with a driving motor, a speed reducer and two belts. The driving motor is fixed on one side of the frame body, and the speed reducer is fixed on the frame body and Connected to the drive motor and provided with a rotating shaft and a linkage shaft, the rotating shaft is combined with the speed reducer and located between the two rails, and the linkage shaft is located on the other side of the frame body and is opposite to the rotating shaft Parallelly, two belt systems are respectively disposed between the rotating shaft and the linking shaft and are respectively fixedly coupled with the two rail seats.

Further, the controller is connected to the driving motor, and the computer is provided with a host and a display connected to the host, and the laser size measuring soft system is disposed in the host.

Preferably, the rotating shaft and the two ends of the linking shaft are respectively provided with a sleeve, and the two belts are respectively sleeved with the rotating shaft and the sleeves at both ends of the linking shaft.

Preferably, the two laser rangefinders are connected to the host through a universal serial bus.

Preferably, the rail set is a linear slide, the drive motor is a servo motor, and each laser range finder is a pulsed laser range finder.

According to the above technical features, the method and device for measuring the size of the irregular object of the present invention have at least the following advantages and effects:

1. The method and device for measuring the size of an irregular object according to the present invention, wherein the size data of the object to be tested is captured by the laser group during operation, and after the numerical processing of the software for measuring the size of the laser, The 3D curved surface of the object to be tested can be reconstructed, and the measured data can be displayed in a pictorial and numerical value, and the scan result can be output and provided to the user in real time.

2. The method and device for measuring the size of an irregular object according to the present invention, which can perform surface measurement comparison on the size and contour of a standard object by means of laser ranging measurement, and provide the result of the comparison. Give the relevant processing machine as a reference for the inspection.

3. The measuring method and device for the size of the irregular object of the invention can directly implement the reverse engineering for the processed object, and can be rotated without rotating or flipping Measuring, not only can save the time required for measurement, but also can reduce the situation of repeated errors, which can effectively improve measurement efficiency and accuracy.

According to the above technical means, the method and device for measuring the size of the irregular object of the present invention, which is a non-contact type of laser ranging method that is not limited by the color of the object, captures the 3D contour of the object, and The size and thickness of the object are processed and measured, and the contour and size parameters of the object to be tested can be calculated conveniently and accurately, the measurement speed and efficiency can be effectively improved, and the measured object can be measured. The size and appearance are tested. Furthermore, after extracting the outline size of the object to be tested, the related information of the object to be tested including processing, copying, etc. can be provided immediately, and the data result obtained is built into a database for later use. The manufacturing comparison of the same product can greatly improve the measurement efficiency and the measurement accuracy. Therefore, the method and device for measuring the size of the irregular object of the present invention can greatly improve the measurement method of the measurement efficiency and the measurement accuracy. Its device.

10‧‧‧Mobile platform

11‧‧‧ ‧ frame

12‧‧‧slide group

121‧‧‧Upper track

122‧‧‧Lower orbit

123‧‧‧ rail seat

13‧‧‧Drive Group

131‧‧‧Drive motor

132‧‧‧Reducer

133‧‧‧Land

134‧‧‧Rotary axis

135‧‧‧ linkage axis

136‧‧‧ bushing

20‧‧‧Laser Group

21‧‧‧Laser rangefinder

30‧‧‧Control Group

31‧‧‧ Controller

32‧‧‧ computer

321‧‧‧Host

322‧‧‧ display

323‧‧‧Laser size measuring software

40‧‧‧Loading platform

50‧‧‧Standard block gauge

60‧‧‧Articles to be tested

1 is a block diagram showing the operation of the method for measuring the size of an irregular object according to the present invention.

Figure 2 is a side elevational view of the measuring device for the size of the irregular article of the present invention.

Fig. 3 is a schematic view showing the correcting operation of the measuring method for the size of the irregular object of the present invention.

Fig. 4 is a schematic view showing the measuring operation of the measuring method for the size of the irregular object of the present invention.

Fig. 5 is a schematic view showing another measuring operation of the method for measuring the size of the irregular object of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, it is further illustrated by the following figures (as shown in FIGS. 1 and 2). For example, a method for measuring the size of an irregular object provided by the present invention is described in detail. The operation flow includes: (A) Instrument setting: preparing a measuring device, the measuring device is provided with a moving platform 10 and a laser a group 20, a control group 30 and a load platform 40. The mobile platform 10 is provided with a frame body 11, a slide rail group 12 and a drive group 13. The frame body 11 is a slightly square frame. The group 12 is disposed on the frame body 11 and is provided with an upper rail 121, a lower rail 122 and two rail seats 123. Preferably, the rail group 12 is a linear slide rail, and the upper rail 121 and the lower rail 122 are respectively And the two rails 123 are respectively disposed on the two rails 121 and 122. The driving group 13 is disposed on the frame body 11 and used for The drive rails 13 are fixed to the side of the frame body 11 , and the drive motor 131 is fixed to one side of the frame body 11 . Preferably, the drive motor 131 is a servo motor, and the reducer 132 is fixed on the frame 11 and is driven by the drive The motor 131 is connected and provided with a rotating shaft 134 and a linkage shaft 135. The rotating shaft 134 is coupled with the speed reducer 132 between the two rails 121, 122, and the linkage shaft 135 is located at the frame body 11. One side is parallel to the rotating shaft 134. Preferably, the rotating shaft 134 and the two ends of the connecting shaft 135 are respectively provided with a sleeve 136, and the two belts 133 are respectively disposed on the rotating shaft 134 and the linkage The shafts 135 are respectively fixedly coupled with the two rail seats 123. Preferably, the two belts 133 are respectively sleeved and coupled with the rotating shaft 134 and the sleeve 136 at both ends of the linking shaft 135; the laser group 20 In combination with the mobile platform 10, two laser range finder 21s are provided, and the two laser range finder 21 are respectively fixed on the two rail seats 123 of the rail group 12 and face each other, preferably Each of the laser range finder 21 is a pulse type laser range finder. The control group 30 is connected to the mobile platform 10 and the laser group 20, and is provided with a controller 31 and a computer 32. The controller 31 is connected to the driving motor 131, and the computer 32 is connected to the controller 31 and is provided with a host 321 and a display 322 connected to the host 321 . The host 321 is coupled with two lasers. The range finder 21 is connected and provided with a laser size measuring software 323 for processing and calculating the distance signals captured by the two laser range finder 21. Preferably, the two laser range finder 21 is versatile. The serial bus bar (USB) is connected to the main body 321 , and the load platform 40 is laterally passed through the frame 11 through the plurality of transport rollers and located between the two laser range finder 21 and the controller 31 . Connected, wherein two laser range finder 21 are facing each other through a gap between two adjacent rollers of the load platform 40; (B), correcting operation: placing a standard gauge 50 on the loading platform 40 The calibration is performed by the standard block gauge 50. Since the size (thickness) of the standard block gauge 50 is known, the laser is measured by the two laser range finder 21 and the signal is transmitted to the laser of the host 321 The size measurement software 323 performs operations, wherein the operation is as shown in FIG. 3, and two laser rangings are used. The distance between the two cameras is L, and the distance between the two laser range finder 21 and the standard block gauge 50 can be respectively obtained as B and C, and the size (thickness) of the standard block gauge 50 can be obtained through two The distance (L) between the laser range finder 21 minus the distance (B and C) of the two laser range finder 21 from the standard block gauge 50 respectively, the size of the standard block gauge 50 (thickness, A) =LBC), if the measured size (thickness) is the same as the actual size of the standard block gauge 50, it means that the two laser range finder 21 has completed the calibration; (C), measurement operation: please refer to As shown in FIG. 2 and FIG. 4, an object to be tested 60 is placed on the loading platform 40, and the object 60 to be tested is moved to the frame 11 through the loading platform 40 to be located in the two laser rangefinders 21. Between the object to be tested 60 may be an irregular 3D object, a large size or an approximately flat object as shown in FIG. 5, at this time, the main motor 321 drives the driving motor 131 via the controller 31. The manner in which the two belts 133 are rotated relative to the frame body 11 via the speed reducer 132 and the rotating shaft 134 allows the two laser rangefinders 21 on the rail seat 123 to be opposite to the same. The object to be tested 60 moves, thereby making two laser ranging The distance signal captured by the meter 21 is transmitted to the host 321 through the laser size measuring software 323 for the size (thickness, Y-axis) and the two laser range finder 21 (X-axis) and The coordinates (thickness) of each position of the object to be tested 60 can be obtained by processing and calculating the coordinates of the load platform 40 (X-axis), wherein the two laser range finder 21 are opposite to each other during the measurement process. The movement of the object to be tested 60 and the manner in which the load platform 40 moves relative to the two laser rangefinders 21 can scan and measure the entire object to be tested 60; and (D), contour drawing: when two laser rangings After measuring the object to be tested 60, the instrument 21 archives the obtained measurement result through the calculated size (thickness, Y-axis) and the two laser range finder 21 (X-axis) and the load. The coordinates of the platform 40 (X-axis) can be used to draw the size profile of the object to be tested 60 and display it on the display 322, that is, to complete the operation of the method for measuring the size of the irregular object of the present invention.

According to the above technical means, the method and device for measuring the size of the irregular object of the present invention, which is a non-contact type of laser ranging method that is not limited by the color of the object, captures the 3D contour of the object, and The size and thickness of the object are processed and measured, and the contour and size parameters of the object to be tested 60 can be calculated conveniently and accurately, the measurement speed and efficiency can be effectively improved, and the object to be tested can be measured. The size and appearance of the 60 are detected. Further, after extracting the outline size of the object to be tested 60, the information about the object to be tested 60 can be immediately provided with information related to processing, copying, etc., and the data result is established into a database. In order to produce the same product in the future, the measurement efficiency and the measurement accuracy can be greatly improved. Therefore, the method and device for measuring the size of the irregular object of the present invention can greatly improve the measurement efficiency and the measurement accuracy. Measurement method and device thereof.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the scope of the present invention. Equivalent embodiments of the invention may be modified or modified, and without departing from the technical scope of the present invention, still belong to the present invention. Within the scope of the technical solution.

10‧‧‧Mobile platform

11‧‧‧ ‧ frame

12‧‧‧slide group

121‧‧‧Upper track

122‧‧‧Lower orbit

123‧‧‧ rail seat

13‧‧‧Drive Group

131‧‧‧Drive motor

132‧‧‧Reducer

133‧‧‧Land

134‧‧‧Rotary axis

135‧‧‧ linkage axis

136‧‧‧ bushing

20‧‧‧Laser Group

21‧‧‧Laser rangefinder

30‧‧‧Control Group

31‧‧‧ Controller

32‧‧‧ computer

321‧‧‧Host

322‧‧‧ display

323‧‧‧Laser size measuring software

40‧‧‧Loading platform

50‧‧‧Standard block gauge

60‧‧‧Articles to be tested

Claims (10)

A method for measuring the size of an irregular object includes the following steps: instrument setting: preparing a measuring device, the measuring device is provided with a moving platform, a laser group, a control group and a loading platform The mobile platform is provided with a frame body, a slide rail group on the top surface and the bottom surface of the frame body, and a drive group combined with the slide rail group, and the laser group is provided with two combined with the slide rail group. a laser range finder that can move relative to the mobile platform, the control group is connected to the mobile platform and the laser group, and is provided with a controller connected to the driving group, and a controller and two a computer connected to a laser range finder, the computer is provided with a laser size measuring software, the loading platform is laterally passed between the two laser range finder and connected to the controller; : A standard block gauge is placed on the load platform for calibration. Since the size of the standard block gauge is known, the measurement is performed by two laser range finder and the signal is transmitted to the laser size measurement software. Operation, if the measured size and the target When the actual size of the block gauge is the same, it means that the two laser range finder has completed the calibration; the measurement operation: placing an object to be tested on the platform and moving to the frame between the two laser rangefinders The driving group is driven by the host through the controller, so that the two laser range finder moves with the object to be tested with the rail group, so that the distance signals captured by the two laser range finder are transmitted to the computer. The laser size measurement software processes and calculates the dimensions of the two laser range finder and the coordinates of the load platform, and the size of each position of the object to be tested is obtained; Draw: When two laser rangefinders measure the object to be tested The obtained measurement result is archived, and the size dimension of the object to be tested can be drawn by calculating the size and the coordinates of the two laser range finder and the coordinate platform of the load platform. The method for measuring the size of an irregular object according to claim 1, wherein in the step of measuring, moving through the two laser range finder relative to the object to be tested and the relative laser ranging of the platform The method of moving the instrument can scan and measure the entire object to be tested. An apparatus for measuring the size of an irregular object, comprising: a mobile platform, a laser group, a control group and a loading platform, wherein: the mobile platform is provided with a frame body and a sliding body disposed on the frame body a track set and a drive group disposed on the frame body for driving the slide track group; the laser set is combined with the mobile platform and provided with two laser range finder, and the two laser range finder respectively The controller is fixed to the two rails of the rail group and faces each other; the control group is connected to the mobile platform and the laser group, and is provided with a controller and a computer, and the controller is connected to the driving group. The computer is coupled to the controller and is provided with a laser size measuring software; and the load platform is laterally passed between the two laser rangefinders and connected to the controller. The measuring device for measuring the size of the irregular object according to claim 3, wherein the sliding rail group is provided with an upper rail, a lower rail and a two rail seat, wherein the upper rail and the lower rail are respectively fixed on the top surface of the rack body and a bottom surface, wherein the two rail seats are respectively slidably disposed on the two rails, the driving group is provided with a driving motor, a speed reducer and two belts, and the driving motor is fixed on one side of the frame body, the speed reducer Attached to the frame body and connected to the drive motor and provided with a rotating shaft and a linkage shaft, the rotating shaft system is combined with the speed reducer Between the two rails, the interlocking shaft is located on the other side of the frame body and parallel to the rotating shaft. The two belt systems are respectively disposed between the rotating shaft and the linking shaft and are respectively fixed with the two rail seats. Combine. The measuring device for measuring an irregular object size according to claim 4, wherein the controller is connected to the driving motor, and the computer is provided with a host and a display connected to the host, the laser size measurement The soft system is located in the host. The measuring device for measuring the size of the irregular object according to claim 4 or 5, wherein the rotating shaft and the two ends of the linking shaft are respectively provided with a sleeve, and the two belts are respectively coupled to the rotating shaft and the linking shaft The sleeves of the ends are combined with each other. The measuring device for measuring the size of an irregular object according to claim 6, wherein the two laser range finder are connected to the host through a universal serial bus. The measuring device for measuring the size of the irregular object according to claim 7, wherein the sliding rail group is a linear sliding rail, the driving motor is a servo motor, and each laser range finder is a pulsed mine. Shooting range finder. The measuring device for measuring the size of an irregular object according to claim 3, wherein the two laser range finder are connected to the computer through a universal serial bus. The measuring device for measuring the size of the irregular object according to claim 4, wherein the sliding rail group is a linear sliding rail, the driving motor is a servo motor, and each of the laser rangefinders is a pulsed mine. Shooting range finder.