TW201500730A - Laser measurement device and calibration mechanism - Google Patents

Abstract

A calibration mechanism is disposed on a fixed assembly, a first laser sensor and a second sensor are separately disposed to the fixed assembly. The calibration facilities includes a mounting plate, an adjust part and a column, the mounting plate is disposed to the fixed assembly. The adjust part includes an adjust section, a fixed section and a calibration block, the adjust section is movably disposed on the mounting plate, the column is receive in the fixed section, the calibration block is disposed at one side of the fixed section, the adjust part slides on the mounting plate, so that the first laser sensor and the second laser sensor are aligned with the column or the calibration block.

Description

Laser measuring device and calibration mechanism thereof

The invention relates to a calibration mechanism, in particular to a calibration mechanism applied to a laser measurement process.

Laser measurement is a kind of non-contact measurement, which has been widely used because it has the advantages of not affecting the surface of the product to be tested, high precision, large measurement range, and short detection time. Before using the laser test product, the position of the laser needs to be calibrated to ensure the accuracy of the laser test results. However, most of the conventional laser position calibration mechanisms require manual operation and it is difficult to automate.

In view of this, it is necessary to provide a calibration mechanism that facilitates automatic correction of the laser position.

In addition, it is necessary to provide a laser measuring device to which the above calibration mechanism is applied.

A calibration mechanism is mounted on a stationary component that mounts a first laser probe and a second laser probe at relatively spaced intervals. The calibration mechanism includes a mounting plate, an adjustment member and a cylinder, and the mounting plate is mounted on the fixing assembly. The adjusting member comprises an integrally arranged adjusting section, a fixing section and a calibration block, the adjusting section is movably mounted on the mounting plate, the column body is received in the fixing section, and the calibration block is protruded on the side of the fixing section The adjusting member slides on the mounting plate such that the first laser probe and the second laser probe face the quasi cylinder or the calibration block.

A laser measuring device includes a fixing assembly, a first laser probe and a second laser probe, and the first laser probe and the second laser probe are mounted on the fixing assembly at intervals. The calibration mechanism includes a mounting plate, an adjustment member and a cylinder; the mounting plate is mounted on the fixing assembly. The adjusting member comprises an integrally arranged adjusting section, a fixing section and a calibration block, the adjusting section is movably mounted on the mounting plate, the column body is received in the fixing section, and the calibration block is protruded on the side of the fixing section The adjusting member slides on the mounting plate such that the first laser probe and the second laser probe are aligned with the cylinder or the calibration block.

The calibration mechanism of the present invention has a simple structure, the relative position of the adjusting member on the mounting plate is adjustable, and the first laser probe and the second laser probe only need to scan the cylinder and the calibration block to achieve The position calibration of the first laser probe and the second laser probe, the calibration process is automated, and the calibration position is accurate.

100‧‧‧calibration agency

10‧‧‧Installation board

20‧‧‧Adjustment

30‧‧‧Cylinder

40‧‧ ‧Flap

11‧‧‧Substrate

12‧‧‧Connecting board

111‧‧‧Mounting holes

121‧‧‧connection hole

21‧‧‧ adjustment section

22‧‧‧Fixed section

23‧‧‧ top surface

24‧‧‧ bottom

25‧‧‧ calibration block

211‧‧ ‧ chute

212‧‧‧through hole

221‧‧‧Positioning holes

222‧‧‧ housing trough

251‧‧‧First calibration segment

252‧‧‧Second calibration segment

41‧‧‧Fixed holes

200‧‧‧Fixed components

210‧‧‧Fixed plate

2101‧‧‧Installation slot

2012‧‧‧Fixed holes

220‧‧‧support board

230‧‧‧Connecting parts

240‧‧‧First carrier board

250‧‧‧Second carrier board

1 is a schematic view showing the working state of a laser measuring device having a calibration mechanism according to a preferred embodiment of the present invention.

2 is an exploded perspective view of the calibration mechanism shown in FIG. 1.

Figure 3 is an enlarged schematic view of the adjusting member shown in Figure 2.

4 is a partial assembly diagram of the laser measuring device shown in FIG. 1.

Referring to FIG. 1, a laser measuring device includes a calibration mechanism 100, a fixing assembly 200, a first laser probe (not shown), and a second laser probe (not shown). The calibration mechanism 100 is mounted on the fixing assembly 200, and the first laser probe and the second laser probe are mounted on the fixing assembly 200 at intervals.

Referring to FIG. 2 , the calibration mechanism 100 includes a mounting plate 10 , an adjustment member 20 , a cylinder 30 , and a blocking piece 40 . The adjusting member 20 is movably mounted on the mounting plate 10, and the cylindrical body 30 is received in the adjusting member 20, and the blocking member 40 is attached to the cylindrical body 30.

The mounting board 10 includes a substrate 11 and a connecting board 12 vertically fixed to one end of the substrate 11. One end of the substrate 11 defines a mounting hole 111. The connecting plate 12 is substantially L-shaped, and the connecting plate 12 defines two connecting holes 121 away from one end of the mounting hole 111.

Referring to FIG. 3 , the adjusting member 20 is substantially a rectangular plate body having oppositely disposed top surfaces 23 and bottom surfaces 24 . The adjustment member 20 further includes an adjustment section 21, a fixed section 22 and a calibration block 25 which are integrally provided. The adjusting section 21 defines a sliding slot 211 extending through the top surface 23 and the bottom surface 24 . A through hole 212 is defined in each of the two sides of the sliding slot 211 . The through hole 212 is disposed adjacent to the fixing section 22 . A positioning hole 221 is defined in the fixing portion 22. In this embodiment, the positioning hole 221 is a square hole which is sequentially surrounded by surrounding walls. The positioning hole 221 is recessed with respect to the two peripheral walls to form a receiving groove 222. The receiving groove 222 is in communication with the positioning hole 221 . The calibration block 25 is disposed on one side of the fixed section 22 and adjacent to the positioning hole 221. The calibration block 25 is substantially in a convex shape, and includes a first calibration section 251 and a second calibration section 252 which are arranged in parallel in a step shape. The difference between the second calibration segment 252 and the top surface 23 is smaller than the difference between the second calibration segment 252 and the bottom surface 24. In this embodiment, the difference between the second calibration segment 252 and the top surface 23 is defined as a distance H1, and the difference between the second calibration segment 252 and the first calibration segment 251 is a distance two H2, and the second calibration segment 252 is The drop of the bottom surface 24 is the distance three H3.

Referring to FIG. 2 again, the column 30 is circular, and both ends of the column 30 are received in the receiving groove 222. In the embodiment, the number of the blocking pieces 40 is two, and one end of each of the blocking pieces 40 defines a fixing hole 41 corresponding to the through hole 212.

Referring to FIG. 4 , the fixing assembly 200 includes a fixing plate 210 , a supporting plate 220 , a connecting member 230 , a first carrying plate 240 , and a second carrying plate 250 .

One mounting groove 2101 is recessed on one side of the fixing plate 210, and two screw holes 2102 are defined in the side wall of the mounting groove 2101. The screw hole 2102 corresponds to the connecting hole 121, so that a fixing member (such as a screw) passes through the connecting hole 121 and the screw hole 2102, thereby locking the mounting plate 10 on the fixing plate 210.

In this embodiment, the number of the support plates 220 is two, and the two support plates 220 are disposed in parallel with each other at both ends of the support plate 220. Each of the support plates 220 and the fixing plate 210 is connected by a connecting member 230 to strengthen the connection strength between the fixing plate 210 and the supporting plate 220. The first carrier plate 240 is fixed to one end of the support plate 220 opposite to the fixed plate 210. The second carrier plate 250 is fixed to one end of the other support plate 220 opposite to the fixed plate 210 and disposed opposite to the first carrier plate 240. A first laser probe is mounted on the first carrier plate 240, and a second laser probe is mounted on the second carrier 250. The first laser probe and the second laser probe are electrically connected to a computer. Install the analysis software on your computer. The first laser probe and the second laser probe can emit laser light and can transmit test information to the analysis software.

Referring to FIG. 2 and FIG. 4 , when the calibration mechanism 100 is assembled, a fixing member (such as a screw) passes through the connecting hole 121 and the screw hole 2102 , thereby locking the mounting plate 10 on the fixing plate 210 . Installed in the slot 2101. The cylinder 30 is received in the receiving groove 222. A locking piece (such as a screw) is passed through the fixing hole 41 and the through hole 212 to lock the blocking piece 40 to the adjusting member 20, and the blocking piece 40 is covered on the column 30 to block the column. The body 30 slides out of the receiving groove 222. The adjusting member 20 moves in a direction parallel to the substrate 11. When the fixing portion 22 is located between the first carrier plate 240 and the second carrier plate 250, the locking member (such as a screw) passes through the sliding slot. The fixing member 20 is locked to the mounting plate 10 by the 211 and the mounting hole 111.

The calibration process of the calibration mechanism 100 is further described below. The adjusting member 20 slides on the mounting plate 10 such that the post 30 is located between the first laser probe and the second laser probe, and the first laser probe and the second laser probe emit laser light to the The portion of the cylinder 30 is located in the positioning hole 221, and the contour pattern of the cylinder 30 along the diameter direction of the first laser probe and the second laser probe is a semi-circular arc, if the two semi-circular arcs are common When the enclosure forms a closed circle, it indicates that the first laser probe and the second laser probe are on the same straight line; if the two semi-circular arcs are misaligned and cannot be enclosed to form a closed circle, the deviation is analyzed by the software. Compensation adjustment. On the other hand, the adjusting member 20 slides on the mounting plate 10 such that the calibration block 25 is located between the first laser probe and the second laser probe, and the first laser probe and the second laser probe The laser is emitted onto the calibration block 25, and the patterns scanned by the first laser probe and the second laser probe are stepped, and the height of each step is analyzed by the software test, if each test height is H1 and H2 and The actual height values of H3 are consistent, indicating that the first laser probe and the second laser probe are on the same line; if the respective test heights are inconsistent with the actual height values of H1, H2 and H3, the deviation compensation adjustment is performed by analyzing the software. The product test can be performed until it is confirmed that the first laser probe and the second laser probe are in the same straight line.

The calibration mechanism 100 of the present invention can adjust the relative position of the adjusting member 20 on the mounting plate 10 through the sliding slot 211, and the first laser probe and the second laser probe only need to scan the cylinder 30 and the calibration block 25 The calibration of the first laser probe and the second laser probe can be realized. The calibration mechanism 100 has a simple structure, the calibration process is automated, and the calibration position is accurate.

no

100‧‧‧calibration agency

10‧‧‧Installation

20‧‧‧Adjustment

30‧‧‧Cylinder

40‧‧ ‧Flap

121‧‧‧connection hole

200‧‧‧Fixed components

210‧‧‧Fixed plate

220‧‧‧support board

230‧‧‧Connecting parts

240‧‧‧First carrier board

250‧‧‧Second carrier board

Claims (10)

A calibration mechanism mounted on a fixed component, the first laser probe and the second laser probe being mounted at a relatively spaced interval, wherein the calibration mechanism comprises: a mounting plate, an adjusting member and a cylinder; the mounting plate Mounted on the fixing component, the adjusting component comprises an integrally arranged adjusting section, a fixing section and a calibration block, the adjusting section is movably mounted on the mounting plate, the column body is received in the fixing section, and the calibration block is convex The adjusting member is slid on the mounting plate such that the first laser probe and the second laser probe are aligned with the cylinder or the calibration block. The calibration mechanism of claim 1, wherein the mounting board comprises a substrate and a connecting plate, and a mounting hole is formed at one end of the substrate, the connecting plate is vertically fixed at one end of the substrate, and the connecting plate is away from one end of the mounting hole, A sliding slot is formed on the adjusting section, and the sliding slot is opposite to the mounting hole of the substrate, and the adjusting member is locked on the mounting board. The calibration mechanism of claim 2, wherein the fixing section defines a positioning hole, wherein the positioning hole is a square hole, which is surrounded by the surrounding walls, wherein the opposite circumferential walls are recessed to form a The receiving slot is accommodated in the receiving slot at both ends of the cylinder. The calibration mechanism of claim 3, wherein the two sides of the sliding slot are respectively provided with a through hole, the calibration mechanism further includes a second blocking piece, and each of the blocking pieces has a fixing hole, and the fixing hole corresponds to the through hole. The baffle is locked to the adjusting member through a fixing hole and the through hole, and the two blocking pieces are covered at both ends of the column. The calibration mechanism of claim 4, wherein the calibration block has a convex shape, and includes a first calibration segment and a second calibration segment disposed in a stepped shape. The calibration mechanism of claim 5, wherein the adjusting member comprises a top surface and a bottom surface disposed opposite to each other, and a difference between the second calibration portion and the top surface is smaller than a difference between the second calibration portion and the bottom surface. The calibration mechanism of claim 2, wherein the fixing component comprises a fixing plate, and a fixing groove is recessed on one side of the fixing plate, and the mounting plate is fitted in the mounting groove. A laser measuring device comprising a fixing component, a first laser probe and a second laser probe, wherein the first laser probe and the second laser probe are mounted on the fixing component at intervals, and the improvement is: The laser measuring device further includes a calibration mechanism including a mounting plate, an adjusting member and a cylinder; the mounting plate is mounted on the fixing component, the adjusting member comprises an integrally arranged adjusting section, a fixing section and a calibration block, the adjusting The step is movably mounted on the mounting plate, the column is received in the fixing section, the calibration block is protruded on one side of the fixing section, and the adjusting member slides on the mounting plate, so that the first laser probe And the second laser probe is aligned with the cylinder or the calibration block. The laser measuring device of claim 8, wherein the first laser probe and the second laser probe are used to scan the cylinder to obtain a half arc pattern, respectively. Forming a closed circle indicates that the first laser probe and the second laser probe are on the same straight line. If the two semi-circular arcs are misaligned and cannot be enclosed to form a closed circle, the deviation compensation is performed by analyzing the software. To correct the position of the first laser probe and the second laser probe. The laser measuring device of claim 8, wherein the first laser probe and the second laser probe are used to scan the calibration block to respectively obtain a stepped pattern, if the test height of each step Consistent with the actual height value, it indicates that the first laser probe and the second laser probe are on the same straight line. If the test height is inconsistent with the actual height, the deviation compensation is performed by the analysis software to correct the first laser probe and The position of the second laser probe.