TWI582384B - Flatness measuring instrument - Google Patents

Description

Flatness detecting device

The present invention relates to a flatness detecting device, and more particularly to a flatness detecting device for an electronic device workpiece.

In the production of electronic devices such as mobile phones, tablets, personal digital assistants (PDAs), MP3s, and MP4s, it is often necessary to produce a plurality of small-sized or wall-shaped workpieces. These workpieces need to be tested for flatness during production. These workpieces include a plurality of peripheral walls. Usually, the end faces of the plurality of peripheral walls of the workpiece are placed on the inspection platform, and the end surface of each peripheral wall of the workpiece and the detection platform are used by the operator using the plug gauge. The gap between the measurements is measured and it is judged whether the detection request is met. However, the size of the workpiece is small, the gap between the end surface of the peripheral wall of the workpiece and the detecting platform is small, and it is difficult to manually detect and easily cause measurement errors. In addition, the manpower and time are consumed in the detecting process, which is not conducive to improving production. effectiveness.

In view of the above, it is necessary to provide a flatness detecting device which has high detection accuracy and is convenient to use.

A flatness detecting device for detecting the flatness of a plane to be tested of a workpiece, comprising an electrically connected measuring component and a control component, the measuring component comprising a carrying platform and a plurality of optical transceivers, the plurality of optical transceivers Passing through the carrying platform and partially protruding from the upper surface of the carrying platform, the optical transceiver includes a corresponding light emitting end and light The receiving end, the plane to be tested of the workpiece is mounted toward the bearing plane, and the plurality of optical transceivers are arranged at a plurality of locations on the plane to be tested, and the plane to be tested is located between the light emitting end and the light receiving end, if the device is to be tested The plane has a flatness deviation to form a gap with the carrying platform, and the light passing through the gap emitted by the light emitting end corresponding to the gap position is received by the corresponding light receiving end and transmitted to the control element, and the control element is based on the received light flux The value determines whether the flatness of the plane to be tested of the workpiece conforms to the standard.

The flatness detecting device of the present invention is respectively provided with a plurality of optical transceivers at a plurality of positions of the peripheral wall of the workpiece to be inspected, and measures the luminous flux passing through the gap between the end surface of the peripheral wall and the carrying platform, and determines whether the luminous flux value meets a predetermined value. Range to determine the flatness of the workpiece. The flatness detecting device has high detection precision, and the specific result that the operator can intuitively detect is convenient to use and saves manpower and time.

500‧‧‧ flatness detection device

100‧‧‧Measurement components

10‧‧‧Base

12‧‧‧Connecting board

14‧‧‧Support

20‧‧‧Loading platform

22‧‧‧ positioning slot

24‧‧‧Positioning holes

30‧‧‧ external fixed block

32‧‧‧through hole

40‧‧‧Fixed block

42‧‧‧ side wall

34, 44‧‧‧ accommodating holes

36, 46‧‧‧ positioning holes

38‧‧‧Getting slots

50‧‧‧Optical transceiver

52‧‧‧Light emitting end

54‧‧‧Light receiving end

60‧‧‧Fixed parts

62‧‧‧Fixed holes

200‧‧‧Control elements

220‧‧‧ indicator

300‧‧‧Workpiece

320‧‧‧ bottom wall

340‧‧‧Wall

302‧‧‧Accommodation space

1 is a schematic view of a flatness detecting device according to a preferred embodiment of the present invention.

Figure 2 is a schematic illustration of the measuring elements of the flatness detecting device of Figure 1.

Fig. 3 is an exploded perspective view showing the measuring element of the flatness detecting device shown in Fig. 2.

4 is a schematic view showing a measuring member of the flatness detecting device shown in FIG. 2 for measuring a workpiece.

Figure 5 is a cross-sectional view of the measuring element of the flatness detecting device shown in Figure 4 taken along line V-V.

Referring to FIG. 1, a flatness detecting device 500 for detecting a flatness of a small workpiece of an electronic device according to a preferred embodiment of the present invention. The electronic device may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), an MP3, an MP4, or the like.

The flatness detecting device 500 includes a measuring component 100 and a control component 200. The test The measuring element 100 is arranged above the control element 200 and electrically connected to each other. The measuring element 100 is used for carrying and measuring the flatness of the workpiece and conveying the measured data to the control element 200. The control element 200 is configured to set a detection standard, analyze the measurement data, and determine whether the flatness of the workpiece conforms to the detection standard.

Referring to FIG. 2, the measuring component 100 includes a base 10, a carrying platform 20, an outer fixing block 30, an inner fixing block 40, an optical transceiver 50, and a fixing member 60 (see FIG. 5).

Referring to FIG. 2 and FIG. 3 together, the base 10 includes a connecting plate 12 and a support member 14. The connecting plate 12 has a rectangular block shape and is fixed above the control element 200. The number of the support members 14 is four, and is spaced apart above the connecting plate 12 for supporting the carrying platform 20. The four supports 14 are of equal height to ensure the level of the carrying platform 20.

As shown in FIG. 5 , the fixing member 60 is fixed on the connecting plate 12 , and a plurality of fixing holes 62 are defined in the longitudinal direction, so as to respectively fix and fix the plurality of optical transceivers 50 respectively to prevent light transmission and reception. The device 50 is shifted up and down. In this embodiment, the fixing member 60 can be a rubber block.

The carrying platform 20 has a rectangular block shape and is fixed on the support member 14 for carrying the workpiece to be measured thereon. The upper surface of the carrier platform 20 is a flat surface for having a relatively flat reference plane for the end face to be measured of the workpiece when carrying the workpiece. A plurality of positioning slots 22 and a plurality of positioning holes 24 are further spaced apart from the loading platform 20 . The plurality of positioning slots 22 are configured to be coupled to the outer fixing block 30 and the inner fixing block 40 to fix the outer fixing block 30 and the inner fixing block 40 above the carrying platform 20 . The plurality of positioning holes 24 respectively correspond to the plurality of fixing holes 62 for fixing the plurality of optical transceivers 50 respectively to prevent the optical transceiver 50 from being shifted left and right.

The optical transceiver 50 is sequentially disposed on the base 10, the fixing member 60, and the carrying platform 20, and One end of the optical transceiver 50 protrudes from the carrying platform 20 , and the other end penetrates into the control component 200 and is electrically connected to the control component 200 . In this embodiment, the number of the optical transceivers 50 is eight, and each of the optical transceivers 50 includes a corresponding light emitting end 52 and a light receiving end 54 respectively. When the flatness of the workpiece is detected, the loading platform 20 carries a workpiece, and the end surface to be measured of the workpiece is attached to the carrying platform 20. The plurality of optical transceivers 50 respectively correspond to a plurality of positions of the end faces of the workpiece to be tested. If the end face of the workpiece is not flush, a gap occurs between the end face of the workpiece and the load bearing platform 20. At this time, the light emitting end 52 and the light receiving end 54 of the optical transceiver 50 corresponding to the gap are partially blocked by the portion of the workpiece to be tested, according to the blocked area between the light emitting end 52 and the light receiving end 54. As a result of the change, the light flux of the laser light emitted from the light receiving end 54 received by the light emitting end 52 also changes, thereby detecting the flatness of the end face of the workpiece.

The outer fixing block 30 is disposed on the upper surface of the carrying platform 20 . The outer fixing block 30 has a hollow rectangular block shape, and a through-hole 32 is formed in the middle portion for guiding the workpiece to be tested. A plurality of receiving holes 34 are defined in the inner side walls of the through holes 32, and the plurality of receiving holes 34 are spaced apart from the inner side walls of the through holes 32. The plurality of receiving holes 34 respectively receive a portion of the plurality of light receiving ends 54 protruding from the carrying platform 20 for protecting the plurality of light receiving ends 54. A locating hole 36 is defined in each of the four corners of the outer fixing block 30. When the outer fixing block 30 is attached to the carrying platform 20, a connecting member (not shown) such as a screw passes through the positioning hole 36. And the positioning groove 22 to stabilize the outer fixing block 30 on the carrying platform 20.

The inner fixing block 40 has a rectangular block shape and is disposed on the upper surface of the loading platform 20 and is received in the through hole 32 of the outer fixing block 30 for guiding and positioning the workpiece to be tested. When the rectangular inner fixing block 40 is received in the cross-shaped through hole 32, two receiving grooves 38 are formed on both sides of the inner fixing block 40, and the receiving groove 38 is not fixed in the through hole 32. The space covered by the block 40 is for facilitating the operator or operating the instrument to pick up and place the workpiece on the inner block 40. The inner fixing block 40 is equivalent in size to the workpiece to be measured, and includes a side wall 42 having a certain thickness. Each of the side walls 42 is recessed inwardly to form a plurality of receiving holes 44, and the plurality of receiving holes 44 are spaced apart from the four side walls of the inner fixing block 40. The receiving holes 44 in each of the inner fixing blocks 40 correspond to a receiving hole 34 in the outer fixing block 30. The plurality of receiving holes 44 respectively correspond to the portions of the plurality of light emitting ends 52 protruding from the carrying platform 20 for protecting the plurality of light emitting ends 52. The opposite ends of the inner fixing block 40 are further provided with a positioning hole 46. When the inner fixing block 40 is attached to the carrying platform 20, a connecting member (not shown) such as a screw passes through the positioning hole 46 and is positioned. The groove 22 is for securing the inner fixing block 40 to the carrying platform 20.

The control component 200 includes at least a control processing unit (not shown) for electrically connecting the optical transceiver 50. The control component 200 can also be electrically connected to a computer (not shown) and a display (not shown). The control component 200 derives a corresponding luminous flux value based on the signal received from the light receiving end 54, and processes the data through a computer and displays it on the display for the operator to read. The control processing unit sets a range of values that is an allowable error range for detecting the flatness of the workpiece. The control processing unit compares the luminous flux value received from each of the light receiving ends 54 with the numerical range to determine whether the flatness of the workpiece to be tested conforms to the detection standard. When one or more luminous flux values are not within the numerical range, the flatness of the workpiece to be tested does not meet the detection criteria. The control element 200 further includes an indicator 220, the number of which is two, respectively for indicating the passage or failure of the result of the current detection.

Referring to FIGS. 3 and 4 together, when the flatness of the end surface of the peripheral wall 340 of the workpiece 300 is detected, the workpiece 300 is attached to the flatness detecting device 500. The workpiece 300 has a rectangular groove shape and further includes a bottom wall 320. The peripheral wall 340 is vertically outward from the bottom wall 320. The extension wall is formed, and the peripheral wall 340 and the bottom wall 320 define a receiving space 302.

As shown in FIG. 5 , the end surface of the peripheral wall 340 of the workpiece 300 is mounted toward the loading platform 20 , and the workpiece 300 is covered by the inner fixing block 40 , and the inner fixing block 40 is received in the receiving space 302 . At this time, the peripheral wall 340 is attached to the side wall 42 of the inner fixing block 40. If the flatness of the end surface of the peripheral wall 340 is deviated, the end surface of the peripheral wall 340 and the upper surface of the load bearing platform 20 are formed with a gap 80. A plurality of optical transceivers 50 are distributed at a plurality of positions of the peripheral wall 340, and a plurality of light emitting ends 52 emit laser light, and a position of the light emitting end 52 corresponding to the position of the gap 80 is formed by the laser beam passing through the gap 80. The light receiving end 54 receives. The control processing unit analyzes the luminous flux received by each light receiving end 54 and obtains a corresponding value. If the optical flux value measured by the optical transceiver 50 is within a preset value range, the optical transceiver 50 measures the corresponding portion of the workpiece 300 to meet the detection standard; if the optical flux value measured by the optical transceiver 50 is not preset Within the numerical range, the optical transceiver 50 measures that the corresponding portion of the workpiece 300 does not meet the detection standard.

Specifically, when the detection result of an optical transceiver 50 meets a predetermined detection standard, the detection compliance standard at the place may be displayed on the display, and the color identification state is marked; when the predetermined detection standard is not met, the color identification state is indicated by another color state. . When the detection results of the eight optical transceivers 50 meet the predetermined detection criteria, the control processing unit determines that the flatness detection of the workpiece 300 conforms to the standard, and at this time, the indicator 220 for identifying the detection pass is illuminated; when there is one or When the detection result of the one or more optical transceivers 50 does not meet the predetermined detection standard, the control processing unit determines that the flatness detection of the workpiece 300 does not conform to the standard, and the indicator 220 for identifying the detection failure does not light up.

The flatness detecting device 500 of the present invention separately sets a plurality of optical transceivers 50 to be inspected A plurality of positions of the peripheral wall 340 of the workpiece 300 are measured, and the luminous flux passing through the gap 80 between the end surface of the peripheral wall 340 and the carrying platform 20 is measured, and it is judged whether the luminous flux value satisfies a predetermined numerical range to determine the flatness of the workpiece 300. The flatness detecting device 500 has high detection precision, and the specific result that the operator can intuitively detect is convenient to use and saves manpower and time.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above-mentioned embodiments are only the embodiments of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be equivalently modified or changed in the spirit of the invention. It is included in the scope of the following patent application.

500‧‧‧ flatness detection device

100‧‧‧Measurement components

200‧‧‧Control elements

220‧‧‧ indicator

Claims (9)

A flatness detecting device for detecting the flatness of a plane to be tested of a workpiece, wherein the flatness detecting device comprises an electrically connected measuring component and a control component, the measuring component comprising a carrying platform and a plurality of lights a transceiver, the plurality of optical transceivers are disposed on the carrying platform, and partially protrude from an upper surface of the carrying platform, each optical transceiver includes a corresponding light emitting end and a light receiving end, and the plane to be measured of the workpiece is oriented The load platform is installed, and a plurality of optical transceivers are arranged at a plurality of locations on the plane to be tested, and the plane to be tested is located between the light emitting end and the light receiving end, and if the plane to be tested has a flatness deviation, the bearing platform is A gap is formed therebetween, and light passing through the gap emitted by the light emitting end corresponding to the gap position is received by the corresponding light receiving end and transmitted to the control element, and the control element determines the plane of the workpiece to be measured according to the received light flux value. Whether the degree meets the standard, wherein the measuring component further comprises an outer fixing block and an inner fixing block, and the middle part of the outer fixing block is provided with a “ten” shaped through hole, the inner fixing Received in the through hole, and forming the two sides of the fixing block taken place grooves for facilitating the operator to take the workpiece placed on the fixed block. The flatness detecting device of claim 1, wherein the inner side wall of the outer fixing block and the side wall of the inner fixing block are correspondingly provided with a plurality of receiving holes, and the plurality of receiving holes of the outer fixing block are respectively used for one A plurality of receiving ends of the inner fixing block are respectively arranged to receive the plurality of light emitting ends in a one-to-one correspondence. The flatness detecting device of claim 2, wherein the inner fixing block is equivalent to an outer dimension of the workpiece to be measured, and is used for guiding and positioning the workpiece to be tested, when the workpiece is covered on the inner fixing block. The peripheral wall of the workpiece is attached to the side wall of the inner block. The flatness detecting device of claim 1, wherein the measuring component further comprises a base and a fixing component, the base comprises a connecting plate and a plurality of equal height supporting members, and the connecting plate is fixed Above the control element, the plurality of support members are disposed above the connecting plate for supporting the carrying platform, the fixing member is fixed between the connecting plate and the carrying platform, and the fixing member is provided for multiple The optical transceiver passes through and fixes the plurality of optical transceivers. The flatness detecting device of claim 1, wherein the upper surface of the carrying platform is a flat surface for providing a reference plane for the plane to be measured of the workpiece. The flatness detecting device of claim 1, wherein the control component comprises at least a control processing unit electrically connected to the optical transceiver for setting a range of light flux received by a light receiving end. And comparing whether the value of the luminous flux received by the light receiving end is within the predetermined range of values. The flatness detecting device of claim 6, wherein the control element further comprises two indicators respectively indicating whether the detection result is pass or fail. The flatness detecting device according to claim 7, wherein the control component is further connected to a set of computers and a display, and the computer displays the detection result of the workpiece by the display after being processed by the computer for the operator to watch. The flatness detecting device according to claim 8, wherein the control processing unit detects that the measured value of the light flux received by the light receiving end is within a predetermined range value, and displays the passed measurement result on the display when detecting When the value of the light flux received by the light receiving end is not within the predetermined range value, the measurement result that does not pass is displayed on the display, and when the detection results of the plurality of optical transceivers are all passed, the indication indicating that the flatness detection result passes is indicated. The indicator is on, otherwise the indicator labeled as the flatness detection result is bright.