CN215031226U - Workpiece defect detection equipment based on 3D detection technology - Google Patents

Abstract

The utility model provides a workpiece defect detection device based on 3D detection technology, which comprises a feeding mechanism, a conveying mechanism and a detection mechanism; the feeding mechanism comprises a first three-axis module first clamping piece, and the first clamping piece can clamp a workpiece; the conveying mechanism is used for conveying the workpieces intermittently along each detection station of the detection mechanism and comprises a conveying assembly and a second clamping piece, the conveying assembly is arranged in front of the detection mechanism, and the conveying assembly drives the second clamping piece which clamps the workpieces to move linearly; the detection mechanism is used for detecting the three-dimensional size and the surface defects of the workpiece, the detection mechanism comprises a plurality of detection stations which are arranged at intervals along the moving direction parallel to the conveying assembly, each detection station comprises a material platform and a detection camera, the material platforms are used for supporting the workpiece, and the second clamping piece moves the workpiece between two adjacent material platforms. The utility model discloses can effectively carry out 3D defect detection to the work piece fast.

Description

Workpiece defect detection equipment based on 3D detection technology

Technical Field

The utility model belongs to the technical field of the detection sets up, concretely relates to work piece defect detecting equipment based on 3D detection technology.

Background

The existing casting machine for the aluminum casting pressure disc is not provided with a quick and effective detection mechanism and a 3D defect detection method, and is only manually observed to visually detect whether parts meet the standard or not. Due to the difference in experience of the personnel and the difference in subjective judgment standards, a uniform standard cannot be formed, and efficient measurement cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a work piece defect check out test set is in order to solve above problem based on 3D detection technique.

The utility model provides a following technical scheme:

a workpiece defect detection device based on a 3D detection technology comprises a feeding mechanism, a conveying mechanism and a detection mechanism;

the feeding mechanism is used for transferring the workpieces from the tray to the conveying mechanism and comprises a first three-axis module and a first clamping piece arranged on the first three-axis module, and the first clamping piece can clamp the workpieces;

the conveying mechanism is used for conveying workpieces intermittently along each detection station of the detection mechanism and comprises a conveying assembly and a second clamping piece arranged on the conveying assembly, the conveying assembly is arranged in front of the detection mechanism, and the conveying assembly drives the second clamping piece clamping the workpieces to move linearly;

the detection mechanism is used for detecting the three-dimensional size and the surface defects of the workpiece, the detection mechanism comprises a plurality of detection stations which are arranged at intervals along the moving direction parallel to the conveying assembly, each detection station comprises a support, and a material platform and a detection camera which are installed on the support, the material platform is used for supporting the workpiece, a lens of the detection camera faces the workpiece on the material platform, and the second clamping piece moves the workpiece between two adjacent material platforms.

Preferably, detection mechanism is including sweeping yard detection module for whether qualified for the bar code on the detection work piece, sweep yard detection module including sweeping yard camera, first light source, first rotary driving spare and first material platform, first light source does sweep the camera and provide illumination, the first material platform of output installation of first rotary driving spare sweep yard in-process to the work piece on the first material platform by sweeping yard camera first rotary driving spare drive first material platform is rotatory.

Furthermore, detection mechanism still includes the defect detection subassembly for whether there is the defect in the detection work piece surface, the defect detection subassembly includes second support, second detection camera, second light source, second rotary driving piece and second material platform, the second detection camera install in on the second support, the second light source does the second detects the camera and provides the illumination, second material platform is installed to the output of second rotary driving piece the second detects the camera to the work piece detection process on the second material platform the drive of second rotary driving piece the second material platform is rotatory.

Furthermore, at least two side holes are formed in the position, deviated from the central hole, of the front face of the workpiece, the detection mechanism further comprises a side aperture measurement assembly, the side aperture measurement assembly comprises a third support, a third translation driving piece, a third lifting driving piece, a third support plate, a third material table, a third detection camera and a bowl light source, the third translation driving piece is mounted on the third support, the third lifting driving piece is mounted on the third translation driving piece, the third support plate is mounted on the third lifting driving piece, and the third translation driving piece and the third lifting driving piece can respectively drive the third support plate to move along the X axis and the Z axis; the third detection camera and the bowl light source are both arranged on the third supporting plate, the third detection camera is located right above the third material platform, and the bowl light source provides illumination for the third detection camera.

Furthermore, the detection mechanism further comprises an inner diameter measuring assembly of the pneumatic measuring instrument, the inner diameter measuring assembly is used for measuring the central aperture of the workpiece, the inner diameter measuring assembly of the pneumatic measuring instrument comprises a fourth support, a fourth lifting driving piece arranged on the fourth support and an inner diameter pneumatic measuring instrument arranged on the fourth lifting driving piece, a measuring head of the inner diameter pneumatic measuring instrument is positioned right above the central aperture of the workpiece, and the fourth lifting driving piece drives the measuring head of the inner diameter pneumatic measuring instrument to be inserted into the central aperture to measure the aperture.

Furthermore, the detection mechanism further comprises an air gauge outer diameter measuring assembly for measuring the outer diameter of the workpiece, the air gauge outer diameter measuring assembly comprises a fifth support, a fifth lifting driving piece installed on the fifth support and an outer diameter air gauge installed on the fifth lifting driving piece, and a measuring head of the outer diameter air gauge is driven by the fifth driving piece to cover the outer side wall of the workpiece.

Further, the detection mechanism still includes hole defect detection subassembly for detect the centre bore surface defect of work piece, hole defect detection subassembly includes the sixth support, installs the sixth lift driving piece on the sixth support, installs sixth detection camera and ring light source on the sixth lift driving piece, sixth material platform and is located the backlight of sixth material platform below, sixth detection camera is just to the work piece centre bore on the sixth material platform, ring light source surround in the outer periphery of sixth detection camera.

Preferably, the conveying assembly comprises an X-axis linear module and a moving plate driven by the X-axis linear module, a plurality of second clamping pieces are mounted on the moving plate, the distance between every two adjacent second clamping pieces is matched with the distance between every two adjacent material tables, and the X-axis linear module can translate the moving plate in a reciprocating mode to enable the second clamping pieces to clamp the workpiece between every two adjacent material tables in a reciprocating mode.

Further, feed mechanism still includes the tray and moves the subassembly for move the tray and move between empty tray station, material loading tray station and NG tray station, the tray moves the subassembly and includes second X axle sharp module, second Z axle sharp module and sucking disc subassembly, sucking disc unit mount is on second Z axle sharp module, sucking disc subassembly include along the Y axle extend to the section bar of tray top with install in the sucking disc of section bar below.

The feeding mechanism and the blanking mechanism are arranged in the conveying mechanism, and the head end and the tail end of the conveying mechanism respectively enter the feeding mechanism and the blanking mechanism; unloading mechanism is equipped with unloading blank tray station, unloading station and NG piece tray station, unloading mechanism include the triaxial module of second and install in third holder on the triaxial module of second, the third holder is used for moving the work piece that has detected in the tray that moves to unloading station or NG piece tray station.

The utility model has the advantages that:

the utility model discloses a feed mechanism can move the work piece by the tray and carry to conveying mechanism on, has the automatic feeding function. The conveying assembly of the conveying mechanism synchronously conveys the workpieces during detection, and the second clamping piece transfers the workpieces between two adjacent material platforms on the detection mechanism, so that manual intervention is reduced, and the working efficiency is improved.

The utility model discloses a plurality of detection stations of arranging on the detection mechanism can detect bar code, surface defect and each size parameter of work piece, realizes that 2D and 3D effect detect jointly, has improved detection quality and precision, has reduced the cost of labor.

The utility model discloses be equipped with the tray and move the year subassembly, can move the tray automatically and move between each tray station and carry the pile, degree of automation is high.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of the structure of a workpiece according to the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic perspective view of the present invention;

fig. 4 is a partial schematic view of the detection mechanism of the present invention;

FIG. 5 is a schematic structural view of the inner hole defect detecting assembly of the present invention;

fig. 6 is a partial schematic view of the feeding mechanism of the present invention;

fig. 7 is a partial schematic view of the blanking mechanism of the present invention.

Labeled as: 10. a workpiece; 11. a groove; 12. a central bore; 13. a side hole; 20. a feeding mechanism; 21. an empty tray station; 22. a feeding plate station; NG parts pallet station; 24. a first triaxial module; 25. a first clamping member; 26. a photoelectric distance measuring sensor; 27. a second X-axis linear module; 28. a second Z-axis linear module; 29. a sucker component; 30. a conveying mechanism; an X-axis linear module; 32. moving the plate; 33. a second clamping member; 34. a rotating electric machine; 40. a code scanning detection component; 41. a first bracket; 42. a code scanning camera; 43. a first light source; 44. a first rotary drive member; 45. a first material table; 46. a defect detection camera; 50. a defect detection assembly; 51. a second bracket; 52. a second detection camera; 53. a second light source; 54. a second rotary drive; 55. a second material table; 60. a side aperture measurement assembly; 61. a third support; 62. a third translational drive member; 63. a third lifting drive member; 64. a third support plate; 65. a third material platform; 66. a third detection camera; 67. a bowl light source; 68. a fourth detection camera; 70. an air gauge inner diameter measurement assembly; 71. a fourth bracket; 72. a fourth lifting drive member; 73. an inner diameter air gauge; 74. a measuring head of the inner diameter pneumatic measuring instrument; 80. an air gauge outer diameter measuring assembly; 81. a fifth support; 82. a fifth elevation drive member; 83. an outer diameter pneumatic gauge; 84. a measuring head of the outer diameter pneumatic measuring instrument; 85. a fifth material platform; 90. an inner hole defect detection assembly; 91. a sixth support; 92. a sixth lifting drive member; 93. a sixth detection camera; 94. a ring light source; 95. a sixth material table; 96. a backlight source; 100. a blanking mechanism; 101. blanking empty disc stations; 102. a blanking station; NG part tray station 103; 104. a second triaxial module; 105. a third clamping member; 110. a tray.

Detailed Description

A workpiece defect detection device based on a 3D detection technology is used for detecting the appearance and the inner and outer diameter sizes of a workpiece. The workpiece 10 is of a circular structure, as shown in fig. 1, the upper surface of the workpiece is provided with a groove 11, the center of the workpiece is provided with a cylinder which is protruded upwards from the groove, a central hole 12 which penetrates through the workpiece along the axial direction is arranged in the cylinder, a plurality of side holes 13 which deviate from the central hole 12 are also arranged in the groove 11, and the front side and the back side of the workpiece 10 are provided with the side holes 13.

As shown in fig. 2 to 7, the present detection apparatus includes a feeding mechanism 20, a conveying mechanism 30, a detection mechanism, and a discharging mechanism 100.

As shown in fig. 2 and 3, the loading mechanism 20 is used to transfer the workpiece 10 from the pallet 110 to the conveying mechanism, and the loading mechanism 20 includes a hollow pallet station 21, a loading tray station 22, and an NG part pallet station 23. The feeding mechanism 20 includes a first three-axis module 24 and a first clamping member 25 mounted on the Z-axis module of the first three-axis module 24, as shown in fig. 6, the first clamping member 25 can clamp the workpiece 10, and the first clamping member 25 can be a common clamp such as a pneumatic finger or a suction cup, in this embodiment, the pneumatic finger is used. The first three-axis module 24 drives the first clamping piece 25 to transfer the workpiece on the feeding tray station 22 to the conveying mechanism 30, or transfer the workpiece with the code scanning NG to the tray of the NG tray station 23. The Z-axis module of the first three-axis module 24 is further provided with a photoelectric distance measuring sensor 26 for detecting the distance from the first clamping member to the workpiece below the first clamping member, so as to accurately clamp the workpiece.

The feeding mechanism 20 further comprises a tray transfer component for transferring the trays among the empty tray station 21, the feeding tray station 22 and the NG tray station 23, so that the trays can be stacked and recycled conveniently. Tray moves and carries subassembly and includes second X axle straight line module 27, second Z axle straight line module 28 and sucking disc subassembly 29, and second Z axle straight line module 28 is installed on the slider of second X axle straight line module 27, and sucking disc subassembly 29 is installed on the slider of second Z axle straight line module 28, and sucking disc subassembly 29 includes the section bar that extends to the tray top along the Y axle and installs the sucking disc in the section bar below, and negative pressure generator is connected to the sucking disc. The second X-axis linear module 27 and the second Z-axis linear module 28 drive the chuck assembly to move between the tray stations, so that the trays are adsorbed and then transferred.

The conveying mechanism 30 is used for intermittently conveying the workpieces along each detection station of the detection mechanism, the conveying mechanism 30 comprises a conveying component and a second clamping piece 33 installed on the conveying component, the conveying component is arranged in front of the detection mechanism, and the conveying component intermittently drives the second clamping piece 33 clamping the workpieces to move linearly. The second clamping piece can be selected from a pneumatic finger or a sucker.

The detection mechanism is used for detecting the three-dimensional size and the surface defects of the workpiece, the detection mechanism comprises a plurality of detection stations which are arranged at intervals along the moving direction parallel to the conveying assembly 30, each detection station comprises a support, and a material platform and a detection camera which are arranged on the support, the material platform is used for supporting the workpiece, a groove capable of positioning the workpiece is formed in the material platform, the material platform intervals of the detection stations are the same, and the lens of the detection camera faces the workpiece on the material platform.

The second clamping pieces 33 of the conveying mechanism 30 transfer the workpiece between two adjacent material tables, wherein the conveying assembly comprises an X-axis linear module 31 and a transfer plate 32 driven by the X-axis linear module 31, a plurality of second clamping pieces 33 are mounted on the transfer plate 32, the distance between every two adjacent second clamping pieces 33 is matched with the distance between every two adjacent material tables, and the X-axis linear module 31 can translate the transfer plate 32 in a reciprocating mode so that the second clamping pieces 33 can clamp the workpiece between every two adjacent material tables in a reciprocating mode. Namely: after finishing a detection beat, each second holder 33 simultaneously with the work piece in the preceding material bench centre gripping to two adjacent back material benches, realize each work piece synchronous motion, then the second holder loosens the work piece, X axle straight line module 31 resets and moves board 32, prepares to carry out next action of moving and carries, and each work piece removes simultaneously, has shortened conveyor assembly's removal stroke, has improved conveying efficiency.

Specifically, detection mechanism is including sweeping yard detection module 40 for whether qualified in the bar code on the detection work piece, sweep yard detection module 40 and include first support 41, sweep camera 42, first light source 43, first rotary driving piece 44 and first material platform 45, sweep yard camera 42 and install on first support 41, first light source 43 provides illumination for sweeping yard camera 42, first light source 43 can select for use by the area source of LED array, first material platform 45 is installed to the output of first rotary driving piece 44, first rotary driving piece 44 can select for use the motor. In the process of scanning the code of the workpiece on the first material table 45 by the camera 42, the first material table 45 is driven to rotate by the first rotary driving member 44, so that the camera 42 scans the outer side wall of the workpiece for one circle. A defect detection camera 46 is further mounted on the first support 41, and is mounted to be inclined downward to detect a defect of the outer wall of the workpiece.

The inspection mechanism further comprises a defect inspection assembly 50 for inspecting the outer surface (e.g. the central hole and the outer side wall) of the workpiece for defects together with the defect inspection camera 46, wherein the defect inspection assembly 50 comprises a second bracket 51, a second inspection camera 52, a second light source 53, a second rotary driving member 54 and a second material table 55, two second inspection cameras 52 are mounted on the second bracket 51, one of the second inspection cameras faces the workpiece horizontally to photograph the appearance of the outer side wall of the workpiece, and the other second inspection camera faces the central hole to photograph the appearance of the upper side part of the central hole. The second light source 53 provides light for the second inspection camera 52, the second rotary driving member 54 can be a motor, the output end of the second rotary driving member 54 is provided with the second material table 55, and in the process of inspecting the workpiece on the second material table 55 by the second inspection camera 52, the second rotary driving member 54 drives the second material table 55 to rotate, so that the appearance of the workpiece is scanned by each camera for one circle.

As shown in fig. 4, the detecting mechanism further includes a side aperture measuring assembly 60, the side aperture measuring assembly 60 includes a third bracket 61, a third translation driving member 62, a third elevation driving member 63, a third supporting plate 64, a third material platform 65, a third detecting camera 66 and a bowl light source 67, the third translation driving member 63 is mounted on the third bracket 61, the third elevation driving member 63 is mounted on the third translation driving member 62, the third supporting plate 64 is mounted on the third elevation driving member 63, the third detecting camera 66 and the bowl light source 67 are both mounted on the third supporting plate 64, the third detecting camera 66 is located right above the third material platform 65, and the bowl light source 67 provides higher-intensity illumination for the third detecting camera 66. The third translation driving member 62 and the third elevation driving member 63 can be air cylinders, and the third translation driving member 62 and the third elevation driving member 63 can respectively drive the third supporting plate 64 to move along the X axis and the Z axis, so that the third detection camera 66 can be moved to the right above each side hole in sequence to photograph and detect the workpiece. The third bracket 61 is also provided with a group of fourth detection cameras 68 for measuring the groove diameter of the workpiece, and the fourth detection cameras 68 take grouped pictures of the groove and then calculate the groove diameter by using software after synthesizing the images.

As shown in fig. 4, the detection mechanism further includes an air gauge inner diameter measuring assembly 70 for measuring the central aperture of the workpiece, the air gauge inner diameter measuring assembly 70 includes a fourth bracket 71, a fourth lifting drive 72 mounted on the fourth bracket 71, and an inner diameter air gauge 73 mounted on the fourth lifting drive 72, the air gauge is a well-known product, a gauge head 74 of the inner diameter air gauge is positioned right above the central aperture 12 of the workpiece, and the fourth lifting drive 72 drives the gauge head 74 of the inner diameter air gauge to be inserted into the central aperture 12 to measure the aperture. The fourth lifting driving piece selects an air cylinder.

As shown in fig. 4, the detection mechanism further includes an air gauge outer diameter measurement unit 80 for measuring an outer diameter of the workpiece, the air gauge outer diameter measurement unit 80 includes a fifth support 81, a fifth lifting drive 82 mounted on the fifth support 81, an outer diameter air gauge 83 mounted on the fifth lifting drive 82, and a fifth material table 85, and a gauge head 84 of the outer diameter air gauge is driven by the fifth drive 82 to cover an outer sidewall of the workpiece 10, thereby measuring an outer diameter deviation of the workpiece 10. The fifth lifting drive 82 is an electric lead screw.

As shown in fig. 5, the detecting mechanism further includes an inner hole defect detecting assembly 90 for detecting a surface defect of the central hole 12 of the workpiece, the inner hole defect detecting assembly 90 includes a sixth support 91, a sixth lifting driving member 92 installed on the sixth support 91, a sixth detecting camera 93 and a ring light source 94 installed on the sixth lifting driving member 92, a sixth material table 95 and a backlight source 96 located below the sixth material table 95, the sixth detecting camera 93 faces the central hole of the workpiece on the sixth material table 95, the ring light source 94 surrounds the outer periphery of the sixth detecting camera 93, and the ring light source 94 and the backlight source 96 provide light for the detection of the sixth detecting camera 93 at the same time, which is beneficial to improving the detection accuracy. The sixth lifting drive 92 is an electric lead screw.

As shown in fig. 2, the conveying assembly further includes a rotating motor 34 mounted on the moving plate, the rotating motor 34 is located upstream of the inner hole defect detecting assembly 90, and before detecting the inner hole defect, the second clamping member 33 on the output shaft of the rotating motor 34 turns the workpiece 180 degrees, so that the bottom surface of the workpiece faces upwards, and the lower side of the central hole 12 is detected, thereby avoiding local omission of the surface defect of the central hole 12.

Each camera of the detection mechanism is connected to a computer provided with detection software, the camera collects images into the computer, then the size of the images is measured through the detection software, and the image detection technology is the prior art. The computer embeds has control module, and each sharp module, driving piece and holder all are connected with control module each other, and control module can be according to the action beat and the route of each actuating mechanism of testing result control.

The equipment also comprises a blanking mechanism 100, and the head end and the tail end of the conveying mechanism 30 respectively enter the feeding mechanism 20 and the blanking mechanism 100. The blanking mechanism 100 is provided with a blanking empty tray station 101, a blanking station 102 and an NG tray station 103, as shown in fig. 7, the blanking mechanism includes a second triaxial module 104 and a third clamping member 105 installed on the second triaxial module 104, and the second triaxial module 104 can drive the third clamping member 105 to transfer the detected workpiece to a corresponding blanking station 102 or a tray on the NG tray station 103 according to the detection result. The blanking mechanism 100 is also provided with a component for carrying trays, similar in structure to the loading mechanism 20, which can move empty trays to a blanking station.

The working process of the equipment is as follows:

loading the tray 110 fully loaded with the workpiece to be detected to the loading tray station 22;

the first three-axis module 24 drives the first clamping piece 25 to transfer the workpiece in the tray of the feeding tray station 22 to the first material table 45 of the code scanning detection assembly, and the code scanning detection assembly 40 starts to scan the code and detect the appearance defect of the workpiece;

the conveying assembly of the conveying mechanism drives the second clamping pieces 33 to clamp the workpiece 10 after code scanning is finished to the next detection station, whether the outer surface (such as a central hole and the outer side wall) of the workpiece has defects is detected, then the second clamping pieces 33 are driven to synchronously move through reciprocating movement of the conveying assembly, the workpiece is clamped to the material tables of the side aperture measuring assembly 60, the pneumatic measuring instrument inner diameter measuring assembly 70, the pneumatic measuring instrument outer diameter measuring assembly 80 and the inner hole defect detecting assembly 90 in sequence, size and defect detection is carried out on different angles and parts of the workpiece, and each camera sends images to a computer to process detection results;

according to the detection result, the second triaxial module 104 of the blanking mechanism 100 drives the third clamping member 105 to transfer the workpiece to the tray on the blanking station 102 or the NG tray station 103.

In the working process, when the tray in the material loading station 22 is empty, the tray transfer component of the feeding mechanism transfers the empty tray to the material loading station 22 for stacking; when the tray in the blanking station 102 is empty, the tray transfer component of the blanking mechanism moves the empty tray to the blanking station 102 for stacking.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A workpiece defect detection device based on a 3D detection technology is characterized by comprising a feeding mechanism, a conveying mechanism and a detection mechanism;

the feeding mechanism is used for transferring the workpieces from the tray to the conveying mechanism and comprises a first three-axis module and a first clamping piece arranged on the first three-axis module, and the first clamping piece can clamp the workpieces;

the conveying mechanism is used for conveying workpieces intermittently along each detection station of the detection mechanism and comprises a conveying assembly and a second clamping piece arranged on the conveying assembly, the conveying assembly is arranged in front of the detection mechanism, and the conveying assembly drives the second clamping piece clamping the workpieces to move linearly;

the detection mechanism is used for detecting the three-dimensional size and the surface defects of the workpiece, the detection mechanism comprises a plurality of detection stations which are arranged at intervals along the moving direction parallel to the conveying assembly, each detection station comprises a support, and a material platform and a detection camera which are installed on the support, the material platform is used for supporting the workpiece, a lens of the detection camera faces the workpiece on the material platform, and the second clamping piece moves the workpiece between two adjacent material platforms.

2. The workpiece defect detection device based on the 3D detection technology as claimed in claim 1, wherein the detection mechanism includes a scanning detection component for detecting whether the barcode on the workpiece is qualified, the scanning detection component includes a scanning camera, a first light source, a first rotary driving member and a first material table, the first light source provides illumination for the scanning camera, the first material table is installed at an output end of the first rotary driving member, and the first rotary driving member drives the first material table to rotate during the scanning process of the scanning camera on the workpiece on the first material table.

3. The workpiece defect detection device based on the 3D detection technology as claimed in claim 1, wherein the detection mechanism further includes a defect detection assembly for detecting whether there is a defect on the outer surface of the workpiece, the defect detection assembly includes a second bracket, a second detection camera, a second light source, a second rotary driving member and a second material table, the second detection camera is mounted on the second bracket, the second light source provides light for the second detection camera, the output end of the second rotary driving member is mounted on the second material table, and the second rotary driving member drives the second material table to rotate during the detection of the workpiece on the second material table by the second detection camera.

4. The apparatus of claim 1, wherein the workpiece has at least two side holes on a front surface thereof, the side holes being offset from the center hole, the inspection mechanism further comprises a side hole measurement assembly, the side hole measurement assembly comprises a third bracket, a third movable driving member, a third lifting driving member, a third supporting plate, a third material stage, a third inspection camera and a bowl light source, the third movable driving member is mounted on the third bracket, the third lifting driving member is mounted on the third movable driving member, the third supporting plate is mounted on the third lifting driving member, and the third movable driving member and the third lifting driving member can respectively drive the third supporting plate to move along the X-axis and the Z-axis; the third detection camera and the bowl light source are both arranged on the third supporting plate, the third detection camera is located right above the third material platform, and the bowl light source provides illumination for the third detection camera.

5. The workpiece defect detecting device based on the 3D detection technology as claimed in claim 1, wherein the detecting mechanism further comprises a pneumatic instrument inner diameter measuring assembly for measuring the central aperture of the workpiece, the pneumatic instrument inner diameter measuring assembly comprises a fourth support, a fourth lifting driving member mounted on the fourth support, and an inner diameter pneumatic instrument mounted on the fourth lifting driving member, a measuring head of the inner diameter pneumatic instrument is located right above the central aperture of the workpiece, and the fourth lifting driving member drives the measuring head of the inner diameter pneumatic instrument to be inserted into the central aperture to measure the aperture.

6. The workpiece defect detecting apparatus based on 3D detection technology as claimed in claim 1, wherein the detecting mechanism further comprises a pneumatic gauge outer diameter measuring assembly for measuring an outer diameter of the workpiece, the pneumatic gauge outer diameter measuring assembly comprising a fifth support, a fifth lifting drive mounted on the fifth support, and an outer diameter pneumatic gauge mounted on the fifth lifting drive, a gauge head of the outer diameter pneumatic gauge being driven by the fifth drive to cover an outer sidewall of the workpiece.

7. The workpiece defect detecting device based on the 3D detection technology as claimed in claim 1, wherein the detecting mechanism further includes an inner hole defect detecting assembly for detecting the surface defect of the central hole of the workpiece, the inner hole defect detecting assembly includes a sixth bracket, a sixth lifting driving member mounted on the sixth bracket, a sixth detecting camera and a ring light source mounted on the sixth lifting driving member, a sixth material table, and a backlight source located below the sixth material table, the sixth detecting camera faces the central hole of the workpiece on the sixth material table, and the ring light source surrounds the outer periphery of the sixth detecting camera.

8. The workpiece defect detection equipment based on the 3D detection technology as claimed in claim 1, wherein the conveying assembly comprises an X-axis linear module and a moving plate driven by the X-axis linear module, a plurality of second clamping members are mounted on the moving plate, the distance between every two adjacent second clamping members is matched with the distance between every two adjacent material tables, and the X-axis linear module can translate the moving plate in a reciprocating mode so that the second clamping members clamp workpieces between every two adjacent material tables in a reciprocating mode.

9. The workpiece defect detecting device based on the 3D detection technology as claimed in claim 1, wherein the feeding mechanism further comprises a tray transfer component for transferring the tray among the empty tray station, the material loading tray station and the NG tray station, the tray transfer component comprises a second X-axis linear module, a second Z-axis linear module and a sucker component, the sucker component is mounted on the second Z-axis linear module, and the sucker component comprises a section bar extending to the position above the tray along the Y axis and a sucker mounted below the section bar.

10. The workpiece defect detection equipment based on the 3D detection technology is characterized by further comprising a blanking mechanism, wherein the head end and the tail end of the conveying mechanism respectively enter the feeding mechanism and the blanking mechanism; unloading mechanism is equipped with unloading blank tray station, unloading station and NG piece tray station, unloading mechanism include the triaxial module of second and install in third holder on the triaxial module of second, the third holder is used for moving the work piece that has detected in the tray that moves to unloading station or NG piece tray station.

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