Automatic detection device and method for size of water-cooled plate of new energy vehicle

Abstract

The application discloses a kind of new energy automobile water cooling plate size automatic detection device and detection method, including by lower to upper sequentially connected support table, horizontal support plate and horizontal positioning datum plate, support table, horizontal support plate and horizontal positioning datum plate are all rectangle;Horizontal support plate left part is equipped with articulated scanning arm;Joint scanning arm front end is equipped with laser scanning head, and the left front part of horizontal support frame upper surface is equipped with first positioning pin;The application has the characteristics of fast detection speed, reduces detection cost, effectively improves the detection efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile part size detection, and in particular to an automatic detection device and method for detecting the size of a new energy automobile water cooling plate with high efficiency. BACKGROUND

[0002] With the continuous development of the Chinese automobile industry, the requirements for various aspects of automobiles are increasing, and automobile parts are the foundation of the automobile industry and the element supporting the sustainable and healthy development of the automobile industry. Only by strictly controlling can the quality of the final product be ensured.

[0003] At the present stage, the control of key sizes of automobile parts by various host factories is also becoming more and more strict, and it has gradually changed from previous partial sampling inspection to online full inspection, and the size of detection has gradually increased from the detection of one or two key sizes to the control of multiple sizes, which has put forward higher requirements for the speed and accuracy of detection.

[0004] The traditional detection method for new energy automobile water cooling plates mainly uses a three-coordinate measuring machine to detect related sizes. After the part is carried to the detection platform, the workpiece needs to be clamped manually using a clamp, and then the operator controls the three-coordinate measurement of each reference feature of the part for alignment. After alignment, the measurement program is executed, and the contact detection is started. The detection cycle is about 15 minutes.

[0005] In addition, a handheld scanner and a structured light scanner can also be used for scanning detection of the part, but such parts generally have a large size that exceeds the field of view of the scanner, so it is necessary to paste mark points on the surface of the part for scanning data splicing. After scanning is completed, the mark points need to be removed, which is time-consuming and laborious.

[0006] It can be seen that the above conventional detection methods cannot meet the requirements of online detection efficiency. SUMMARY

[0007] The purpose of the present application is to solve the problem that conventional detection methods cannot meet the requirements of online detection efficiency, and to provide an automatic detection device and method for detecting the size of a new energy automobile water cooling plate with high efficiency.

[0008] In order to achieve the above purpose, the present application adopts the following technical solutions:

[0009] The application discloses an automatic detection device for the size of a water cooling plate of a new energy vehicle, which comprises a support table, a horizontal support plate and a horizontal positioning reference plate which are sequentially connected from bottom to top, and the support table, the horizontal support plate and the horizontal positioning reference plate are all rectangular; a joint arm is arranged on the left part of the horizontal support plate, a laser scanning probe is arranged at the front end of the joint arm, a first positioning pin is arranged on the left front part of the upper surface of the horizontal support plate, and a second positioning pin is arranged on the right rear part of the upper surface of the horizontal support plate; the first positioning pin and the second positioning pin are respectively used for positioning connection with a first positioning hole and a second positioning hole arranged on the water cooling plate of the new energy vehicle, and the first positioning pin and the second positioning pin are both located outside the horizontal positioning reference plate.

[0010] A plurality of front pneumatic clamps are arranged on the front edge of the upper surface of the horizontal support plate in transverse spacing, a plurality of rear pneumatic clamps are arranged on the rear edge of the upper surface of the horizontal support plate in transverse spacing, a left pneumatic clamp is arranged on the left edge of the upper surface of the horizontal support plate, and a right pneumatic clamp is arranged on the right edge of the upper surface of the horizontal support plate; the front pneumatic clamps, the rear pneumatic clamps, the left pneumatic clamp and the right pneumatic clamp are respectively used for clamping the front edge, the rear edge, the left edge and the right edge of the water cooling plate of the new energy vehicle placed on the horizontal positioning reference plate; the device further comprises a code scanning gun, a computer and a start-stop switch, and the front pneumatic clamps, the rear pneumatic clamps, the left pneumatic clamp and the right pneumatic clamp are all electrically connected with the start-stop switch; the laser scanning probe is electrically connected with the joint arm, and the joint arm and the code scanning gun are both electrically connected with the computer.

[0011] The first positioning pin and the second positioning pin of the application are respectively used for positioning connection with the first positioning hole and the second positioning hole on the water cooling plate of the new energy vehicle, and the horizontal positioning reference plate is used for providing support for the water cooling plate of the new energy vehicle.

[0012] The first positioning pin, the second positioning pin and the horizontal positioning reference plate are used for completely constraining the six degrees of freedom of the water cooling plate of the new energy vehicle, so that the alignment and positioning of the water cooling plate of the new energy vehicle are realized; when a new water cooling plate of the new energy vehicle is replaced for measurement, the alignment operation does not need to be performed again, so that the replacement of the water cooling plate of the new energy vehicle for measurement is fast, and the data processing efficiency is high.

[0013] The joint arm is fixedly installed on the horizontal support plate, and the two can be regarded as a whole and will not move relatively.

[0014] The application can continuously detect the water cooling plate of the new energy vehicle, the single scanning time is about 15 seconds, the production line beat can be controlled within 2 minutes, and the detection speed is fast compared with the traditional three-coordinate single measurement time of about 10 minutes to 15 minutes;

[0015] Compared with the traditional scanning mode, the part does not need to be pretreated (powder spraying, point pasting and the like), and can be directly scanned after being delivered, so that no consumables are consumed, and the detection cost is reduced.

[0016] Aiming at the characteristics of the water-cooled plate of the new energy vehicle, the pneumatic clamp is designed, the replacement efficiency of the water-cooled plate of the new energy vehicle is ensured, the repeated measurement of the reference feature is avoided, and the detection efficiency is improved.

[0017] As preferred, the front pneumatic clamp, the rear pneumatic clamp and the right pneumatic clamp each comprise a rectangular bottom plate, a first rotary 90° down cylinder arranged on the rectangular bottom plate and a convex-shaped backing plate; the upper end surface of the convex-shaped backing plate is flush with the upper surface of the horizontal positioning reference plate, and the first rotary 90° down cylinder is electrically connected with the start-stop switch.

[0018] The first rotary 90° down cylinder and the convex-shaped backing plate are matched with the upper surface and the lower surface of the water-cooled plate of the new energy vehicle respectively, so as to clamp the water-cooled plate of the new energy vehicle.

[0019] As preferred, the left pneumatic clamp comprises a bent plate connected with the left edge of the horizontal support plate and a second rotary 90° down cylinder connected with the bent plate, and the second rotary 90° down cylinder is electrically connected with the start-stop switch.

[0020] As preferred, it further comprises a front guide rail arranged on the horizontal support plate, the first rotary 90° down cylinder of the front pneumatic clamp is connected with the front guide rail through a front sliding block, and a fastening screw for locking the front sliding block and the front guide rail is arranged on the front sliding block;

[0021] It further comprises a rear guide rail arranged on the horizontal support plate, the first rotary 90° down cylinder of the rear pneumatic clamp is connected with the rear guide rail through a rear sliding block, and a fastening screw for locking the rear sliding block and the rear guide rail is arranged on the rear sliding block;

[0022] It further comprises a right guide rail arranged on the horizontal support plate, the first rotary 90° down cylinder of the right pneumatic clamp is connected with the right guide rail through a right sliding block, and a fastening screw for locking the right sliding block and the right guide rail is arranged on the right sliding block.

[0023] The arrangement of the front guide rail facilitates the transverse movement of each front pneumatic clamp along the front guide rail, so that each front pneumatic clamp is suitable for clamping the water-cooled plate of the new energy vehicle of different models;

[0024] The arrangement of the rear guide rail facilitates the transverse movement of each rear pneumatic clamp along the rear guide rail, so that each rear pneumatic clamp is suitable for clamping the water-cooled plate of the new energy vehicle of different models;

[0025] The arrangement of the right guide rail facilitates the longitudinal movement of the right pneumatic clamp along the right guide rail, so that the right pneumatic clamp is suitable for clamping the water-cooled plate of the new energy vehicle of different models.

[0026] As preferred, the horizontal positioning reference plate comprises three rectangular base plates arranged in series, and the four corner portions of the lower surface of the rectangular base plate are fixedly connected with the horizontal support plate through support blocks.

[0027] 3 block rectangular substrate, facilitate control horizontal positioning reference plate flatness, horizontal positioning reference plate is not easy to deform.

[0028] As preferred, the horizontal support plate is provided with a plurality of oblong weight-reducing holes.

[0029] The provision of each oblong weight-reducing hole reduces the weight of the horizontal support plate, facilitating the movement of the support table.

[0030] As preferred, the horizontal support plate is fixedly connected to the upper surface of the support table through a plurality of pads.

[0031] The support table comprises a table plate, four support legs provided on the table plate, and rollers provided on the support legs, wherein the rollers are provided with locking switches.

[0032] A detection method of an automatic detection device for the size of a new energy vehicle water cooling plate, comprising the following steps:

[0033] Step 1: the computer sets the initial value of the measurement quantity i of the new energy vehicle water cooling plate to 0; the operator pulls the joint arm left and right to move, and the laser scanning probe scans the horizontal positioning reference plate, the first positioning pin and the second positioning pin, and the computer obtains the Euler alignment matrix of the joint arm relative to the clamp;

[0034] In the subsequent replacement of the new energy vehicle water cooling plate measurement process, since the new energy vehicle water cooling plate is positioned by the horizontal positioning reference plate, the first positioning pin and the second positioning pin (one side two pins), the installation position is consistent each time, so the position between the new energy vehicle water cooling plate and the joint arm is also fixed, and in the subsequent measurement process, it is not necessary to repeatedly measure the alignment features (one side two pins), but only to repeatedly use the Euler alignment matrix.

[0035] Step 2: place the new energy vehicle water cooling plate to be measured on the horizontal positioning reference plate and each convex-shaped pad, so that the first positioning hole and the second positioning hole of the new energy vehicle water cooling plate are respectively positioned and connected with the first positioning pin and the second positioning pin;

[0036] Turn on the start-stop switch, so that the first rotating 90° down cylinder works, the reinforced swing arm of the first rotating 90° down cylinder rotates 90°, the pressure head connected with the reinforced swing arm descends, and the pressure head and the corresponding convex-shaped pad clamp the new energy vehicle water cooling plate;

[0037] At the same time, the second rotating 90° down cylinder works, the reinforced swing arm of the second rotating 90° down cylinder rotates 90°, and the pressure head of the second rotating 90° down cylinder descends and presses the new energy vehicle water cooling plate;

[0038] Step 3, the operator scans the two-dimensional code on the new energy vehicle water cooling plate by hand-held code scanning gun, and the computer obtains the serial number of the new energy vehicle water cooling plate through the two-dimensional code;

[0039] Step 4, the operator reciprocally pulls the articulated arm left and right, the laser scanning probe high-speed collects the point cloud on the upper surface of the new energy vehicle water cooling plate, after scanning, the operator presses the end key on the laser scanning probe to complete the scanning, and the computer obtains the scanning data of the new energy vehicle water cooling plate;

[0040] Step 5, the computer aligns the scanning data and the CAD model of the new energy vehicle water cooling plate stored in the computer by using Euler alignment matrix, the computer extracts 20 sets of planeness of planar features and position of screw outer cylinder on the water cooling plate from the scanning data, the extraction method of the measurement value is that the boundary point cloud in the scanning data is removed, the points with a normal distance less than 5mm from the defined features are selected, and the three-dimensional size and geometric tolerance of the new energy vehicle water cooling plate are calculated according to the method specified in the ASME Y14.5 standard;

[0041] Step 6, the computer forms a file of the calculated three-dimensional size and geometric tolerance of the new energy vehicle water cooling plate, and the file is named and saved as “serial number of the measured new energy vehicle water cooling plate”;

[0042] Step 7, the start-stop switch is turned off, the front pneumatic clamp, the rear pneumatic clamp, the left pneumatic clamp and the right pneumatic clamp are loosened, and the operator takes down the new energy vehicle water cooling plate;

[0043] The computer increases the value of i by 1, and returns to step 2 to realize detection of other new energy vehicle water cooling plates.

[0044] As preferred, the first positioning pin is a cylindrical pin, and the second positioning pin is a rhombic pin.

[0045] As preferred, the articulated arm is connected with the horizontal support frame through the left mounting vertical cylinder, and the lower part of the articulated arm is threadedly connected with the upper part of the left mounting vertical cylinder; the rear mounting vertical cylinder for connecting with the articulated arm is further arranged at the middle part of the rear edge of the horizontal support plate.

[0046] Therefore, the present application has the following beneficial effects:

[0047] The new energy vehicle water cooling plate can be continuously detected, the single piece scanning time is about 15 seconds, the production line beat can be controlled within 2 minutes, and the detection speed is fast relative to the traditional three-coordinate single piece measurement time of about 10-15 minutes;

[0048] The part does not need to be pretreated (powder spraying, point pasting, etc.), and the incoming material can be directly scanned, no consumables are consumed, and the detection cost is reduced;

[0049] A pneumatic fixture is designed to ensure the replacement efficiency of the water-cooling plate of new energy vehicles, eliminate the repeated measurement of benchmark features, and effectively improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 It is a structural schematic diagram of the present invention;

[0051] Figure 2 It is a front view of the present invention;

[0052] Figure 3 This is a structural schematic diagram of the first rotating 90° downward pressing cylinder of the present invention;

[0053] Figure 4 This is a structural diagram of a new energy vehicle water cooling plate installed on the present invention;

[0054] Figure 5 It is a structural schematic diagram of the XY plane of the present invention. DETAILED DESCRIPTION

[0055] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0056] like Figure 1 、 Figure 2 、 Figure 4 The embodiment shown is an automated detection device for the size of a water-cooling plate of a new energy vehicle, comprising a support platform 1, a horizontal support plate 2, and a horizontal positioning reference plate 3, which are sequentially connected from bottom to top. The support platform, the horizontal support plate, and the horizontal positioning reference plate are all rectangular; a joint arm 21 is provided on the left side of the horizontal support plate, and a laser scanning probe 211 is provided at the front end of the joint arm. A first locating pin 22 is provided on the left front portion of the upper surface of the horizontal support frame, and a second locating pin 29 is provided on the right rear portion of the upper surface of the horizontal support frame. The first locating pin and the second locating pin are respectively used to positionally connect with a first locating hole and a second locating hole provided on the water-cooling plate of the new energy vehicle. The first locating pin and the second locating pin are both located on the outside of the horizontal positioning reference plate.

[0057] The front edge of the upper surface of the horizontal support plate is provided with four front pneumatic clamps 23 arranged transversely and at intervals, the rear edge of the upper surface of the horizontal support plate is provided with four rear pneumatic clamps 24 arranged transversely and at intervals, the left edge of the upper surface of the horizontal support plate is provided with a left pneumatic clamp 25, and the right edge of the upper surface of the horizontal support plate is provided with a right pneumatic clamp 30; each front pneumatic clamp is used for clamping the front edge of the new energy automobile water-cooled plate placed on the horizontal positioning reference plate, each rear pneumatic clamp is used for clamping the rear edge of the new energy automobile water-cooled plate placed on the horizontal positioning reference plate, and the left pneumatic clamp and the right pneumatic clamp are respectively used for clamping the left edge and the right edge of the new energy automobile water-cooled plate placed on the horizontal positioning reference plate; the scanning code gun, the computer and the start-stop switch are further included, and the start-stop switch is electrically connected with each front pneumatic clamp, each rear pneumatic clamp, the left pneumatic clamp and the right pneumatic clamp; the laser scanning probe is electrically connected with the articulated arm, and the articulated arm and the scanning code gun are electrically connected with the computer.

[0058] When the articulated arm rotates in space, the angle data is obtained from multiple angle encoders at the same time, the arm length of the articulated arm is a certain value, the current position of the laser scanning probe is converted according to a trigonometric function, and then the XYZ form is converted.

[0059] The laser scanning probe is integrated on the articulated arm and used, the absolute distance data from the probe to the measured surface is obtained by the laser scanning probe, and the three-dimensional coordinates of the position of the laser scanning probe at any time are provided by the articulated arm, so that the surface high-density three-dimensional point cloud data of the measured object is obtained in real time.

[0060] The laser scanning probe is installed on the articulated arm, and the surface high-density three-dimensional point cloud of the measured object can be quickly obtained, which has the characteristics of high speed, high sampling density and wide application surface, and has no special limitation on the size and weight of the measured object, and is suitable for scanning soft or easily deformed objects.

[0061] As shown in Figure 5 The XY plane 4 composed of the horizontal support plate and the horizontal positioning reference plate restricts three degrees of freedom, which are Z direction movement, rotation around X and rotation around Y respectively; the first positioning pin composed of the cylindrical pin restricts X direction movement and Y direction movement; the second positioning pin composed of the diamond pin restricts rotation around Z; and the six degrees of freedom of the new energy automobile water-cooled plate are completely restricted, so that the alignment and positioning of the new energy automobile water-cooled plate are realized.

[0062] As shown in Figure 1 Each front pneumatic clamp, each rear pneumatic clamp and the right pneumatic clamp each include a rectangular bottom plate 20, a first rotary 90° down pressure cylinder 201 and a convex-shaped pad plate 202 arranged on the rectangular bottom plate; the upper end surface of the convex-shaped pad plate is flush with the upper surface of the horizontal positioning reference plate, and the first rotary 90° down pressure cylinder is electrically connected with the start-stop switch.

[0063] The left pneumatic clamp includes a bending plate 251 connected to the left edge of the horizontal support plate and a second rotating and pressing 90° cylinder 252 connected to the bending plate. The second rotating and pressing 90° cylinder is electrically connected to the start-stop switch.

[0064] It also includes a front guide rail 26 provided on the horizontal support plate, and the first rotating 90° downward pressing cylinder of the front pneumatic clamp is connected to the front guide rail through a front slider 261, and the front slider is provided with a fastening screw for locking the front slider to the front guide rail;

[0065] It also includes a rear guide rail 27 provided on the horizontal support plate, and the first rotating 90° downward pressing cylinder of the rear pneumatic clamp is connected to the rear guide rail through a rear slider 271, and the rear slider is provided with a fastening screw for locking the rear slider to the rear guide rail;

[0066] It also includes a right guide rail 28 arranged on the horizontal support plate. The first rotating 90° downward pressing cylinder of the right pneumatic clamp is connected to the right guide rail through the right slider 281. The right slider is provided with a fastening screw for locking the right slider to the right guide rail.

[0067] The horizontal positioning reference plate includes three rectangular base plates 31 arranged in series, and the four corners of the lower surfaces of the rectangular base plates are fixedly connected to the horizontal support plate through support blocks 32 .

[0068] A plurality of oblong weight-reducing holes 2001 are provided on the horizontal support plate.

[0069] The horizontal support plate is fixedly connected to the upper surface of the support platform through a plurality of pads 2002. The support platform comprises a platform, four support legs arranged on the platform and rollers arranged on the support legs, wherein a locking switch is provided on the rollers.

[0070] A method for detecting the size of a water cooling plate of a new energy vehicle by an automated detection device comprises the following steps:

[0071] Step 1: The computer sets the initial value of the measurement quantity i of the new energy vehicle water cooling plate to 0. The operator pulls the articulated arm left and right, causing the laser scanning probe to scan the horizontal positioning reference plate, the first positioning pin, and the second positioning pin. The computer then obtains the Euler alignment matrix of the articulated arm relative to the fixture.

[0072] The articulated arm is equipped with a device coordinate system, and the computer is equipped with a workpiece coordinate system on the pneumatic fixture. The Euler alignment matrix is ​​the conversion relationship between the two coordinate systems (i.e., between the device coordinate system and the workpiece coordinate system). The device coordinate system completely coincides with the workpiece coordinate system after translation and rotation. The translation and rotation amounts are the parameters in the alignment matrix, where TR_X is the translation along the X axis and ROT_X is the rotation around the X axis.

[0073] The present invention aligns the scan data and the CAD model through alignment (one-side two-pin method) and obtains the Euler alignment matrix at the same time.

[0074] The parameter values ​​of the Euler alignment matrix obtained in this embodiment are as follows:

[0075] ROT_X=178.483922401342056

[0076] ROT_Y=84.134408972344644

[0077] ROT_Z=178.636553845003931

[0078] TR_X=-1263.909094366828640

[0079] TR_Y=1324.144738744041888

[0080] TR_Z=294.199487570557380

[0081] Step 2, such as Figure 4 As shown, the new energy vehicle water cooling plate 300 to be tested is placed on the horizontal positioning reference plate and each convex-shaped pad, so that the first positioning hole and the second positioning hole of the new energy vehicle water cooling plate are respectively positioned and connected with the first positioning pin and the second positioning pin;

[0082] like Figure 3 As shown, the start / stop switch is turned on to operate the first 90° rotating downward-pressing cylinder. The reinforced swing arm 2011 of the first 90° rotating downward-pressing cylinder rotates 90°, and the pressure head 2022 connected to the reinforced swing arm descends. The pressure head and the corresponding convex-shaped pad clamp the water cooling plate of the new energy vehicle.

[0083] At the same time, the second rotating downward pressing cylinder works by 90 degrees, the reinforced swing arm of the second rotating downward pressing cylinder rotates by 90 degrees, and the pressure head of the second rotating downward pressing cylinder by 90 degrees drops to press the water cooling plate of the new energy vehicle;

[0084] Figure 1 and Figure 4 The initial state and the state after rotating 90° of the reinforced swing arm of the first rotating 90° pressing cylinder and the second rotating 90° pressing cylinder are given in the figure.

[0085] Step 3: The operator uses a handheld barcode scanner to scan the QR code on the water cooling plate of the new energy vehicle, and the computer obtains the serial number of the water cooling plate of the new energy vehicle through the QR code;

[0086] Step 4, the operator pulls the articulated arm left and right, and the laser scanning probe collects the point cloud of the upper surface of the new energy vehicle water cooling plate at high speed. After scanning, the operator presses the end key on the laser scanning probe to complete the scanning, and the computer obtains the scanning data of the new energy vehicle water cooling plate;

[0087] Step 5, the computer aligns the scanning data and the CAD model of the new energy vehicle water cooling plate stored in the computer using the Euler alignment matrix. The computer extracts 20 sets of planar features from the scanning data, including the flatness of the planar features and the position of the screw cylinder on the water cooling plate. The extraction method of the measurement value is as follows: remove the boundary point cloud (default 0.5mm) in the scanning data, select all points with a normal distance less than 5mm (changeable) to the defined feature, and calculate the three-dimensional size and geometric tolerance of the new energy vehicle water cooling plate according to the method specified in the ASME Y14.5 standard.

[0088] Wherein, without alignment, the CAD model and the scanning data are in a separate state, and automatic extraction of measurement values from the scanning data requires that the two coincide, otherwise automatic extraction is not possible.

[0089] Step 6, the computer forms a file of the calculated three-dimensional size and geometric tolerance of the new energy vehicle water cooling plate, and the file is named and saved as "serial number of the measured new energy vehicle water cooling plate".

[0090] Step 7, turn off the start-stop switch, loosen the new energy vehicle water cooling plate with the front pneumatic clamp, rear pneumatic clamp, left pneumatic clamp and right pneumatic clamp, and the operator takes down the new energy vehicle water cooling plate.

[0091] The computer increases the value of i by 1 and returns to step 2 to realize detection of other new energy vehicle water cooling plates.

[0092] The first positioning pin is a cylindrical pin, and the second positioning pin is a rhombic pin. The rhombic pin is used to prevent over-constraint of the new energy vehicle water cooling plate.

[0093] As shown in Figure 1 The articulated arm is connected to the horizontal support frame through the left mounting vertical cylinder 100, and the lower part of the articulated arm is threadedly connected to the upper part of the left mounting vertical cylinder. The horizontal support plate further comprises a rear mounting vertical cylinder 101 for connecting with the articulated arm.

[0094] The above description is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic detection device for the size of a water cooling plate of a new energy vehicle, characterized in that, It includes support table (1), horizontal support plate (2) and horizontal positioning reference plate (3) connected in turn from bottom to top, and the support table, horizontal support plate and horizontal positioning reference plate are all rectangular; The left part of the horizontal support plate is provided with a joint arm (21), and the front end of the joint arm is provided with a laser scanning probe (211); The left front part of the upper surface of the horizontal support frame is provided with a first positioning pin (22), and the right rear part of the upper surface of the horizontal support frame is provided with a second positioning pin (29); The first positioning pin and the second positioning pin are respectively used for positioning connection with the first positioning hole and the second positioning hole arranged on the water cooling plate of the new energy automobile, and the first positioning pin and the second positioning pin are located outside the horizontal positioning reference plate; A plurality of front pneumatic clamps (23) are arranged on the front edge of the upper surface of the horizontal support plate, a plurality of rear pneumatic clamps (24) are arranged on the rear edge of the upper surface of the horizontal support plate, a left pneumatic clamp (25) is arranged on the left edge of the upper surface of the horizontal support plate, and a right pneumatic clamp (30) is arranged on the right edge of the upper surface of the horizontal support plate; The front pneumatic clamp, the rear pneumatic clamp, the left pneumatic clamp and the right pneumatic clamp are respectively used for clamping the front edge, the rear edge, the left edge and the right edge of the water cooling plate of the new energy automobile placed on the horizontal positioning reference plate; It also includes a code scanning gun, a computer and a start-stop switch, the front pneumatic clamp, the rear pneumatic clamp, the left pneumatic clamp and the right pneumatic clamp are electrically connected with the start-stop switch; The laser scanning probe is electrically connected with the joint arm, and the joint arm and the code scanning gun are electrically connected with the computer; The front pneumatic clamp, the rear pneumatic clamp and the right pneumatic clamp all include a rectangular bottom plate (20), a first rotary 90° down pressure cylinder (201) and a convex-shaped pad plate (202) arranged on the rectangular bottom plate; The upper end surface of the convex-shaped pad plate is flush with the upper surface of the horizontal positioning reference plate, and the first rotary 90° down pressure cylinder is electrically connected with the start-stop switch; The horizontal positioning reference plate includes three rectangular base plates (31) arranged in series, and the four corner parts of the lower surface of the rectangular base plate are fixedly connected with the horizontal support plate through support blocks (32).

2. The automatic detection device for the size of the water cooling plate of a new energy vehicle according to claim 1, characterized in that, The left pneumatic clamp includes a bent plate (251) connected with the left edge of the horizontal support plate and a second rotary 90° down pressure cylinder (252) connected with the bent plate, and the second rotary 90° down pressure cylinder is electrically connected with the start-stop switch.

3. The automatic detection device for the size of the water cooling plate of a new energy vehicle according to claim 1, characterized in that, It also includes a front guide rail (26) arranged on the horizontal support plate, and the first rotary 90° down pressure cylinder of the front pneumatic clamp is connected with the front guide rail through a front sliding block (261), and a fastening screw for locking the front sliding block and the front guide rail is arranged on the front sliding block; It also includes a rear guide rail (27) arranged on the horizontal support plate, and the first rotary 90° down pressure cylinder of the rear pneumatic clamp is connected with the rear guide rail through a rear sliding block (271), and a fastening screw for locking the rear sliding block and the rear guide rail is arranged on the rear sliding block; It also includes a right guide rail (28) arranged on the horizontal support plate, and the first rotary 90° down pressure cylinder of the right pneumatic clamp is connected with the right guide rail through a right sliding block (281), and a fastening screw for locking the right sliding block and the right guide rail is arranged on the right sliding block.

4. The automatic detection device for the size of the water cooling plate of a new energy vehicle according to claim 1, characterized in that, The horizontal support plate is provided with a plurality of long circular weight-reducing holes (2001).

5. The automatic detection device for the size of the water cooling plate of new energy vehicles according to claim 1 or 2 or 3 or 4, characterized in that, The horizontal support plate is fixedly connected with the upper surface of the support table through a plurality of cushion blocks (2002).

6. A detection method for the automatic detection device of the size of the water-cooled plate of a new energy vehicle based on claim 2, characterized in that, The method comprises the following steps: Step 1: the computer sets the initial value of the measurement quantity i of the new energy vehicle water cooling plate as 0; the operator pulls the joint arm left and right to move, so that the laser scanning probe scans the horizontal positioning reference plate, the first positioning pin and the second positioning pin, and the computer obtains the Euler alignment matrix of the joint arm relative to the clamp; Step 2: the new energy vehicle water cooling plate to be measured is placed on the horizontal positioning reference plate and each convex-shaped cushion plate, so that the first positioning hole and the second positioning hole of the new energy vehicle water cooling plate are respectively positioned and connected with the first positioning pin and the second positioning pin; At the same time, the second rotary 90° cylinder works, the reinforcing swing arm of the second rotary 90° cylinder rotates 90°, and the pressure head of the second rotary 90° cylinder descends to press the new energy vehicle water cooling plate; Step 3: the operator holds the code scanning gun to scan the two-dimensional code on the new energy vehicle water cooling plate, and the computer obtains the serial number of the new energy vehicle water cooling plate through the two-dimensional code; Step 4: the operator reciprocally pulls the joint arm left and right, the laser scanning probe high-speed acquires the point cloud on the upper surface of the new energy vehicle water cooling plate, after the scanning is completed, the operator presses the end key on the laser scanning probe to complete the scanning, and the computer obtains the scanning data of the new energy vehicle water cooling plate; Step 5: the computer aligns the scanning data and the CAD model of the new energy vehicle water cooling plate stored in the computer by using the Euler alignment matrix, the computer extracts 20 groups of planeness of planar features and position degree of the outer cylinder of the screw on the water cooling plate from the scanning data, and the extraction method of the measurement value is: removing the boundary point cloud in the scanning data, selecting all the points with a normal distance less than 5mm from the defined features, and calculating the three-dimensional size and geometric tolerance of the new energy vehicle water cooling plate according to the method specified in the ASME Y14.5 standard; Step 6: the computer forms a file of the calculated three-dimensional size and geometric tolerance of the new energy vehicle water cooling plate, and the file is named and saved as "the serial number of the measured new energy vehicle water cooling plate"; Step 7: the start-stop switch is closed, the front pneumatic clamp, the rear pneumatic clamp, the left pneumatic clamp and the right pneumatic clamp release the new energy vehicle water cooling plate, and the operator takes down the new energy vehicle water cooling plate; The computer increases the value of i by 1, and returns to step 2 to realize the detection of other new energy vehicle water cooling plates. The first positioning pin is a cylindrical pin, and the second positioning pin is a rhombic pin.

7. The detection method of the automatic detection device for the size of the water cooling plate of the new energy vehicle according to claim 6, characterized in that, The joint arm is connected with the horizontal support frame through a left mounting vertical cylinder (100), and the lower part of the joint arm is threadedly connected with the upper part of the left mounting vertical cylinder; the rear edge of the horizontal support plate is further provided with a rear mounting vertical cylinder (101) for connecting with the joint arm.

8. The detection method of the automatic detection device for the size of the water-cooled plate of a new energy vehicle according to claim 6 or 7, characterized in that, ​

Images