Workpiece size detection device

Abstract

The present application relates to the technical field of workpiece size detection, and specifically discloses a workpiece size detection device, including: a suction mechanism for sucking and supporting a workpiece; a support rod connected to the suction mechanism through a ball head assembly; an adjustment body connected to one end of the support rod away from the suction mechanism; a base connected to one end of the adjustment body away from the support rod, an inverted tower-shaped annular slide rail is provided on the base, and a sliding sleeve is provided on the inverted tower-shaped annular slide rail; the sliding sleeve is connected to the suction mechanism rope; a circular slip ring is arranged on the base for self-rotation, and the circular slip ring is connected to the sliding sleeve through an elastic telescopic rod; and a three-dimensional laser scanner. Compared with the traditional laser scanning device, the suction mechanism can be tilted and rotated under the joint action of the drive of the circular slip ring and the guidance of the sliding sleeve, so that the three-dimensional laser scanner can scan the groove structure and the protrusion structure on the workpiece more fully, thereby ensuring the accuracy of the electronic three-dimensional map, so as to ensure the accuracy of the workpiece size measurement.

Description

Technical Field

[0001] The present application relates to the technical field of workpiece size detection, and in particular to a workpiece size detection device. Background Art

[0002] In the fields of aviation and aerospace, 3D laser scanners are usually used to detect the contour dimensions of special-shaped components. 3D laser scanning technology scans the surface of the workpiece with a laser beam and receives the reflected light from the workpiece surface to form a 3D point cloud of the workpiece surface. Finally, comparison software is used to fit the 3D point cloud with the 3D digital model of the workpiece, which can efficiently realize the contour dimension detection of the workpiece. The more complete the scan of the workpiece surface, the more accurate the scanning result of the workpiece.

[0003] The patent document with announcement number CN219649821U discloses a 3D laser scanning detection support device, including a base, an adjustment body and a support member, wherein the adjustment body is arranged on the base, and the support member is arranged on the adjustment body. The workpiece is scanned at various angles by moving the 3D laser scanner to obtain an electronic 3D model of the workpiece, which has certain positive significance. However, there are also certain defects, namely, there are multiple grooves, holes or column protrusions on some workpieces. When scanning manually, the workpiece needs to be scanned back and forth from different angles. The whole process is cumbersome and time-consuming, and it is very easy to scan the structure supporting the workpiece, thereby affecting the accuracy of the final electronic 3D model, and then causing dimensional measurement errors. Summary of the invention

[0004] The purpose of this application is to provide a workpiece size detection device to solve the above problems.

[0005] To achieve the above purpose, the technical solution of this application is:

[0006] A workpiece size detection device comprises: a suction mechanism, used to suck and support a workpiece; a support rod, connected to the suction mechanism through a ball head assembly; an adjusting body, connected to one end of the support rod away from the suction mechanism; a base, connected to one end of the adjusting body away from the support rod, the base is provided with an inverted tower-shaped annular slide rail, and the sliding sleeve is provided on the inverted tower-shaped annular slide rail; the sliding sleeve is connected to the suction mechanism rope; a circular slip ring, rotatably arranged on the base, and the circular slip ring is connected to the sliding sleeve through an elastic telescopic rod; a three-dimensional laser scanner, arranged above the workpiece, for collecting and scanning workpiece contour information.

[0007] Preferably, the suction mechanism includes an electromagnet assembly and a vacuum suction cup assembly, the support rod is an L-shaped support rod, one free end of the L-shaped support rod is connected to the electromagnet assembly, and the other free end is connected to the vacuum suction cup assembly, and the intersection end of the L-shaped support rod is hinged to the top of the adjusting body.

[0008] Preferably, a hinge column is provided on the top of the adjusting body, and a hinge sleeve is provided at the intersection end of the L-shaped support rod, and the axial direction of the hinge sleeve is perpendicular to the plane formed by the two free sections of the L-shaped support rod; it also includes a locking mechanism, which is used to lock the relative rotation position of the hinge sleeve relative to the hinge column.

[0009] Preferably, the locking mechanism includes an elastic push rod, a clamping rod, a cross slot and a conversion chamber; the elastic push rod is axially slidably arranged in the side wall of the articulated sleeve along the articulated sleeve, and the clamping rod is connected to an end of the elastic push rod facing away from the end face of the articulated sleeve; the cross slot is arranged on a cross section of the articulated column, and the conversion chamber and the cross slot are interconnected and located on the side of the cross slot facing the end face of the articulated column; when the clamping rod is located in the conversion chamber, the articulated sleeve and the articulated column are in an unlocked state; when the clamping rod is located in the cross slot, the articulated sleeve and the articulated column are in a locked state.

[0010] Preferably, there are two groups of locking mechanisms, and the two groups of locking mechanisms are symmetrically arranged along the middle cross-section along the length direction of the hinge column; a sliding hole for the elastic push rod to slide is provided on the side wall of the hinge sleeve; two opposite sliding holes in the two groups of locking mechanisms are connected, and correspondingly, rack rods are staggered up and down on the sides facing each other of the two elastic push rods, and a gear is rotatably provided between the two rack rods, and the two rack rods are meshed with the gear, and the gear is rotatably arranged on the hinge column.

[0011] Preferably, the ball head assembly includes a first ball socket shell, a second ball socket shell and a ball head; the first ball socket shell is connected to the suction mechanism on the side facing away from the second ball socket shell, the second ball socket shell is provided with a connecting hole, and a free end of the L-shaped support rod passes through the connecting hole and is connected to the ball head; the first ball socket shell, the second ball socket shell and the L-shaped support rod are provided with an anti-bending spring on the outside, the top of the anti-bending spring abuts against the side of the suction mechanism facing away from the workpiece, and the bottom abuts against the baffle arranged on the L-shaped support rod.

[0012] Preferably, the suction mechanism comprises a connecting arm, the connecting arm is connected to a side of the suction mechanism facing away from the workpiece, and one end of the rope away from the sliding sleeve is connected to one end of the connecting arm away from the suction mechanism.

[0013] Preferably, the adjusting body is a screw guide rail telescopic assembly.

[0014] Preferably, a circular slide rail is provided on the base, the circular slip ring is slidably arranged on the circular slide rail, a tooth groove is provided on the side of the circular slip ring away from the center of the base, and a rotating tooth plate is rotatably provided on the base, and the rotating tooth plate is meshed with the tooth groove.

[0015] Preferably, the elastic telescopic rod includes a plurality of telescopic joints, the plurality of telescopic joints are nested in sequence, and a telescopic spring is provided inside the telescopic joint.

[0016] Compared with the device for transmitting and supporting the workpiece for three-dimensional laser scanning, the workpiece size detection device disclosed in the present application has a suction mechanism in this embodiment that can be tilted and rotated under the joint action of the drive of the circular slip ring and the guidance of the sliding sleeve, so that the three-dimensional laser scanner can perform a more sufficient and comprehensive scan of the groove structure and protrusion structure on the workpiece, thereby ensuring the accuracy of the electronic three-dimensional image and ultimately ensuring the accuracy of the workpiece size measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of the overall structure of this application;

[0018] Figure 2 This is the main view of the overall structure of this application;

[0019] Figure 3 This is the right view of the overall structure of this application;

[0020] Figure 4 This is a top view of the overall structure of this application;

[0021] Figure 5 This is a schematic diagram of the overall structure of this application in use status;

[0022] Figure 6 This is a schematic diagram of the hinged column structure in this application;

[0023] Figure 7 This is a cross-sectional view of the conversion cavity in this application;

[0024] Figure 8 This is a cross-sectional view of the cross slot in this application;

[0025] Fig. 9 This is a partial enlarged view (stereoscopic view) of the hinge sleeve in this application;

[0026] Fig.10 It is a partial enlarged view (main view) of the hinge sleeve in this application;

[0027] Fig.11 It is a cross-sectional view of the cross cavity position of the hinge sleeve in this application;

[0028] Fig.12It is a cross-sectional view of the conversion chamber position at the hinge sleeve in this application;

[0029] Fig.13 A cross-sectional view of the elastic telescopic rod in this application;

[0030] Fig.14 This is a cross-sectional view of the hinge sleeve in this application.

[0031] In the figure:

[0032] 1. L-shaped support rod; 10. hinge sleeve; 101. electromagnet assembly; 102. vacuum suction cup assembly; 103. anti-bending spring; 1030. baffle; 1040. first ball socket shell; 1050. second ball socket shell; 1060. ball head; 1070. connecting hole; 104. connecting arm; 11. clamping rod; 12. elastic supporting rod; 13. sliding hole; 14. retaining ring; 15. compression spring; 16. retaining handle; 17. sleeve column; 18. gear; 19 1. rack rod; 2. adjusting body; 20. first sliding column; 21. first sliding frame; 22. second sliding column; 23. second sliding frame; 24. lead screw; 3. base; 4. inverted tower-shaped annular slide rail; 40. sliding sleeve; 5. circular slip ring; 50. tooth groove; 6. hinged column; 60. cross slot; 61. conversion chamber; 7. cover plate; 8. workpiece; 9. rotating gear disc; 90. telescopic joint; 91. first clamping ring; 92. second clamping ring; 93. telescopic spring. DETAILED DESCRIPTION

[0033] The present application is now described in further detail in conjunction with the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present application in a schematic manner, and therefore only show the components related to the present application.

[0034] like Figure 1-14 As shown, a workpiece size detection device includes: a suction mechanism, used for sucking and supporting a workpiece 8; a support rod, connected to the suction mechanism through a ball head assembly; an adjusting body 2, connected to the end of the support rod away from the suction mechanism; a base 3, connected to the end of the adjusting body 2 away from the support rod, an inverted tower-shaped annular slide rail 4 is provided on the base 3, and a sliding sleeve 40 is provided on the inverted tower-shaped annular slide rail 4; the sliding sleeve 40 is connected to the suction mechanism rope; a circular slip ring 5, rotatably arranged on the base 3, and the circular slip ring 5 is connected to the sliding sleeve 40 through an elastic telescopic rod; a three-dimensional laser scanner, arranged above the workpiece 8, for collecting and scanning the contour information of the workpiece 8.

[0035] The suction mechanism is mainly used to suck the plate-like structure workpiece 8. The support rod and the suction mechanism are connected through a ball head assembly. When the support rod is in a vertical state, the suction mechanism drives the workpiece 8 to rotate and swing under the action of the ball head assembly, and can perform circumferential swing with a certain deflection angle under the combination of the two.

[0036] The adjusting body 2 has a connecting function, so as to connect the supporting rod and the base 3, and at the same time, the installation position of the workpiece 8 has a certain height, so as to avoid collision with other structures on the ground when the workpiece 8 is driven to rotate.

[0037] The inverted tower-shaped annular slide rail 4 is in a spiral structure and has a certain height as a whole, that is, it gradually extends from low to high and from inside to outside. A sliding sleeve 40 is provided on it, and the sliding sleeve 40 can slide relative to the inverted tower-shaped annular slide rail 4 under the action of external force.

[0038] The sliding sleeve 40 is connected to the suction mechanism via a rope, and the rope is not elastic.

[0039] The circular slip ring 5 is a ring-shaped structure, which can perform circular motion around its own center under the action of external force.

[0040] An elastic telescopic rod is connected to the circular slip ring 5, and the other end of the elastic telescopic rod is connected to the sliding sleeve 40. The two ends of the elastic telescopic ring are respectively connected to the circular slip ring 5 and the sliding sleeve 40 chain ring, so as to make way for slight shaking such as twisting and deflection of the elastic telescopic rod during rotation.

[0041] When working, the circular slip ring 5 rotates under the drive of the driving member. During the rotation process, the elastic telescopic rod will drive the sliding sleeve 40 to move along the inverted tower-shaped annular slide rail 4. Since the sliding sleeve 40 is connected to the suction mechanism through a rope, the sliding sleeve 40 sliding around the inverted tower-shaped annular slide rail 4 will also synchronously drive the suction mechanism to rotate. Since the height of each section of the inverted tower-shaped annular slide rail 4 and the distance from the center are always changing, the workpiece 8 will be tilted synchronously during the rotation of the suction mechanism, and the tilt angle will also change. In actual situations, the number of circles of the workpiece 8 is usually three to five circles, and the circular slip ring 5 can also be reversed. During the entire rotation process of the workpiece 8, the three-dimensional laser scanner arranged above it can scan the workpiece 8 in all directions. For a workpiece 8 with a certain thickness (height), the offset angle of the workpiece 8 can also be changed by designing the height of the inverted tower-shaped annular slide rail 4 or the degree of deviation from the center, so as to scan the side of the workpiece 8 as much as possible.

[0042] Compared with the traditional device for supporting the workpiece for three-dimensional laser scanning, the suction mechanism in this embodiment can be tilted and rotated under the joint action of the drive of the circular slip ring 5 and the guidance of the sliding sleeve 40, so that the three-dimensional laser scanner can scan the groove structure and protrusion structure on the workpiece 8 more fully and comprehensively, thereby ensuring the accuracy of the electronic three-dimensional image and ultimately ensuring the accuracy of the workpiece size measurement.

[0043] In some further embodiments, the suction mechanism includes an electromagnet assembly 101 and a vacuum suction cup assembly 102, the support rod is an L-shaped support rod 1, one free end of the L-shaped support rod 1 is connected to the electromagnet assembly 101, and the other free end is connected to the vacuum suction cup assembly 102, and the intersection end of the L-shaped support rod 1 is hinged to the top of the adjusting body 2.

[0044] In order to prevent the structure for fixing the workpiece 8, such as a clamping or snap-fitting structure, from partially or partially blocking the scanning surface of the workpiece 8 when fixing the workpiece 8, an electromagnet assembly 101 and a vacuum suction cup assembly 102 are specially provided in the present embodiment, wherein the electromagnet assembly 101 is used for adsorbing and fixing a workpiece 8 with a certain degree of magnetism, such as an iron workpiece, and the vacuum suction cup assembly 102 is used for adsorbing and fixing a type of workpiece 8 that is not magnetic, such as a titanium workpiece.

[0045] When dealing with a magnetic or non-magnetic workpiece 8, the electromagnet assembly 101 and the vacuum suction cup assembly 102 can be converted under the action of the L-shaped support rod 1. Specifically, the L-shaped support rod 1 is rotated to achieve the conversion between the electromagnet assembly 101 and the vacuum suction cup assembly 102.

[0046] In some further embodiments, a hinge column 6 is provided at the top of the adjusting body 2, and a hinge sleeve 10 is provided at the intersection end of the L-shaped support rod 1, and the axial direction of the hinge sleeve 10 is perpendicular to the plane formed by the two free sections of the L-shaped support rod 1; a locking mechanism is also included, and the locking mechanism is used to lock the relative rotation position of the hinge sleeve 10 relative to the hinge column 6.

[0047] Exemplarily, a hinge column 6 is provided at the top of the adjusting body 2, and a hinge sleeve 10 is provided at the intersection end of the L-shaped support rod 1. The hinge sleeve 10 is sleeved on the hinge column 6 to realize the conversion between the electromagnet assembly 101 and the vacuum suction cup assembly 102 in the L-shaped support rod 1.

[0048] At the same time, in order to ensure the stability of the L-shaped support rod 1 when using the electromagnet assembly 101 or the vacuum suction cup assembly 102, a corresponding locking structure is provided to lock and limit the rotation of the electromagnet assembly 101 or the vacuum suction cup assembly 102 relative to the L-shaped support rod 1 when the electromagnet assembly 101 or the vacuum suction cup assembly 102 is in use.

[0049] In some further embodiments, the locking mechanism includes an elastic push rod 12, a clamping rod 11, a cross slot 60 and a conversion cavity 61; the elastic push rod 12 is axially slidably arranged in the side wall of the articulated sleeve 10 along the articulated sleeve 10, and the clamping rod 11 is connected to an end of the elastic push rod 12 facing away from the end face of the articulated sleeve 10; the cross slot 60 is arranged on a cross section of the articulated column 6, and the conversion cavity 61 is connected to the cross slot 60 and is located on the side of the cross slot 60 facing the end face of the articulated column 6; when the clamping rod 11 is located in the conversion cavity 61, the articulated sleeve 10 and the articulated column 6 are in an unlocked state; when the clamping rod 11 is located in the cross slot 60, the articulated sleeve 10 and the articulated column 6 are in a locked state.

[0050] There are two elastic push rods 12 , which are evenly spaced along the circumference of the hinge sleeve 10 .

[0051] The two ends of the clamping rod 11 are respectively connected to one end of two elastic push rods 12 extending into the side wall of the connecting sleeve.

[0052] Reference Fig. 9 and Fig.10 As shown, exemplarily, the elastic push rod 12 always has a tendency to move toward the axial center of the hinge sleeve 10. Specifically, a retaining ring 14 can be provided on a section of the elastic push rod 12 located outside the hinge ring, and a sleeve column 17 is provided on the annular end face of the hinge sleeve 10. The sleeve column 17 slides through the retaining ring 14, and a retaining handle 16 is provided on one end of the sleeve column 17, and a compression spring 15 is sleeved on a section of the sleeve column 17 located between the retaining handle 16 and the retaining ring 14. Under the action of the compression spring 15, the retaining ring 14 pushes the elastic push rod 12 to move toward the axial center of the hinge sleeve 10, so that the clamping rod 11 is always located in the cross clamping groove 60, so that the hinge sleeve 10 and the hinge column 6 are in a locked state.

[0053] When the retaining ring 14 is pulled toward the axial center of the articulated sleeve 10, the retaining ring 14 overcomes the compression spring 15 and moves away from the articulated sleeve 10. At this time, the clamping rod 11 moves into the conversion chamber 61 under the action of the elastic support rod 12. At this time, the clamping rod 11 on the articulated sleeve 10 is no longer restricted by the cross slot 60 on the articulated column 6. The articulated sleeve 10 can rotate relative to the articulated column 6 to realize the rotation of the L-shaped support rod 1, and finally realize the conversion of the electromagnet assembly 101 and the vacuum suction cup assembly 102.

[0054] In some further embodiments, there are two groups of locking mechanisms, and the two groups of locking mechanisms are symmetrically arranged along the middle cross-section in the length direction of the hinge column 6; a sliding hole 13 for the elastic push rod 12 to slide is provided on the side wall of the hinge sleeve 10; two opposite sliding holes 13 in the two groups of locking mechanisms are connected, and correspondingly, rack rods 19 are staggered up and down on the sides facing each other of the two elastic push rods 12, and a gear 18 is rotatably provided between the two rack rods 19, and the two rack rods 19 are meshed with the gear 18, and the gear 18 is rotatably set on the hinge column 6.

[0055] In order to ensure the stability of the locking of the hinge sleeve 10 and the hinge column 6, two groups of locking mechanisms are provided.

[0056] The elastic push rod 12 is specifically arranged in the sliding hole 13, and the sliding hole 13 is arranged on the side wall of the hinge sleeve 10. The number of sliding holes 13 corresponds to that of the hinge sleeve 10, and two groups of sliding holes 13 are arranged. One group of relative sliding holes 13 is interconnected, and rack rods 19 are arranged on the opposite end faces of the elastic push rods 12 located in the interconnected group of sliding holes 13. The two rack rods 19 are staggered up and down to form an area for setting a gear 18 therebetween. The gear 18 is rotatably arranged on the hinge column 6, and the two rack rods 19 are meshed with the gear 18. When the gear 18 rotates in one direction, the two relative elastic push rods 12 approach or move away from each other, so that unlocking can be achieved by pulling a retaining ring 14.

[0057] Reference Figure 5-11 The cross slot 60 is a cross-shaped slot structure, and the clamping rod 11 is a rod-shaped structure. One slot in the cross slot 60 is used for clamping the clamping rod 11 when using the electromagnet assembly 101, and the other slot is used for clamping the clamping rod 11 when using the vacuum suction cup assembly 102.

[0058] The conversion cavity 61 is a prototype disc-shaped structure as a whole, but is provided with two opposite fan-shaped protrusions, and a certain gap is left in its central area to allow the center of the clamping rod 11 to rotate.

[0059] In order to facilitate installation, the clamping rod 11 can be a stud structure, which can be directly screwed into the hinge sleeve 10 through the reserved opening on the hinge sleeve 10 and realize the connection with the two elastic rods 12.

[0060] The gear 18 and the rack rod 19 are both located in the opening, and a cover plate 7 is also provided on the opening to seal the opening after installation to avoid the influence of the external environment.

[0061] The cover plate 7 can be connected by screws.

[0062] Reference Fig.14As shown, in some further embodiments, the ball head assembly includes a first ball socket shell 1040, a second ball socket shell 1050 and a ball head 1060; the side of the first ball socket shell 1040 facing away from the second ball socket shell 1050 is connected to the suction mechanism, and the second ball socket shell 1050 is provided with a connecting hole 1070, and a free end of the L-shaped support rod 1 passes through the connecting hole 1070 and is connected to the ball head 1060; the outer sleeve of the first ball socket shell 1040, the second ball socket shell 1050 and the L-shaped support rod 1 is provided with an anti-bending spring 103, the top of the anti-bending spring 103 abuts against the side of the suction mechanism facing away from the workpiece 8, and the bottom abuts against the baffle 1030 arranged on the L-shaped support rod 1.

[0063] The first ball socket shell 1040 and the second ball socket shell 1050 jointly cover the ball head 1060 , thereby realizing the rotation and swing of the L-shaped support rod 1 .

[0064] The first socket housing 1040 and the second socket housing 1050 may be connected to each other by bolts.

[0065] The baffle 1030 is disposed on the L-shaped support rod 1 , and the anti-bending spring 103 is located between the suction mechanism and the baffle 1030 , and is used to prevent the workpiece 8 from excessively tilting to a certain extent.

[0066] In some further embodiments, the suction mechanism includes a connecting arm 104 connected to a side of the suction mechanism facing away from the workpiece 8 , and an end of the rope away from the sliding sleeve 40 is connected to an end of the connecting arm 104 away from the suction mechanism.

[0067] The connecting arm 104 has a certain length, which can firstly provide a certain auxiliary support for the workpiece 8 and secondly keep the rope away from the rotation center of the entire workpiece 8, thereby making it more convenient for the rope to pull the workpiece 8 to rotate.

[0068] In some further embodiments, the adjusting body 2 is a screw guide rail telescopic assembly.

[0069] Reference Figure 1 and Figure 2 As shown, the lead screw 24 guide rail telescopic assembly includes a first sliding column 20, a first sliding frame 21, a second sliding column 22, a second sliding frame 23 and a driving lead screw 24. The top end of the first sliding column 20 is connected to the hinge column 6, and the bottom end slides through the second sliding frame 23, and the end through which it passes is connected to the first sliding frame 21; the top end of the second sliding column 22 is connected to the first sliding frame 21, and the bottom end is arranged on a platform for mounting a servo motor, and can also be arranged on the base 3. The lead screw 24 is threadedly connected to the first sliding frame 21, the top end of the lead screw 24 is rotatably connected to the second sliding frame 23, and the bottom end of the lead screw 24 is transmission connected to the servo motor.

[0070] When the lead screw 24 rotates, it will drive the first sliding frame 21 to move in the up and down directions, thereby driving the first sliding column 20 to move in the up and down directions to adjust the height of the entire workpiece 8.

[0071] In some further embodiments, a circular slide rail is provided on the base 3, and a circular slip ring 5 is slidably set on the circular slide rail. A tooth groove 50 is provided on the side of the circular slip ring 5 away from the center of the base 3. A rotating gear plate 9 is rotatably provided on the base 3, and the rotating gear plate 9 is engaged with the tooth groove 50.

[0072] The rotating gear disc 9 can be driven by a motor. When the rotating gear disc 9 rotates, the circular slip ring 5 rotates under the action of meshing, thereby driving the elastic telescopic rod to rotate, and the elastic telescopic rod then drives the sliding sleeve 40 on the inverted tower-shaped annular slide rail 4 to move along the inverted tower-shaped annular slide rail 4. During the movement, the sliding sleeve 40 will drive the connecting arm 104 to rotate under the action of the rope, thereby driving the workpiece 8 to perform a circular motion with a variable inclination angle.

[0073] In some further embodiments, the elastic telescopic rod includes a plurality of telescopic joints 90 , and the plurality of telescopic joints 90 are nested in sequence, and a telescopic spring 93 is provided inside the telescopic joint 90 .

[0074] Reference Fig.13 As shown, it shows the structure of the elastic telescopic rod with three telescopic sections 90.

[0075] Among them, the telescopic joint 90 is a sleeve-shaped structure, the caliber of the previous telescopic joint 90 is larger than the caliber of the subsequent telescopic joint 90, and one end of the previous telescopic joint 90 that is connected with the subsequent telescopic joint 90 is facing the center of the telescopic joint 90 to form a first clamping ring 91, and one end of the subsequent telescopic joint 90 that is connected with the previous telescopic joint 90 is facing away from the center of the telescopic joint 90 and is provided with a second clamping ring 92. During installation, the first clamping ring 91 and the second clamping ring 92 are abutted and matched; the telescopic spring 93 is located in the telescopic joint 90, one end of which abuts the second clamping ring 92 on the subsequent telescopic joint 90, and the other end abuts the screw radially screwed on the telescopic joint 90.

[0076] The length of the elastic telescopic rod can be changed, but it always has a tendency to stretch to ensure that the circular slip ring 5 maintains the movement of the sliding sleeve 40.

[0077] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection created by this application.

Claims

1. A workpiece size detection device, characterized in that: include: A suction mechanism, used for sucking and supporting a workpiece (8); A support rod connected to the suction mechanism via a ball head assembly; An adjusting body (2) connected to an end of the support rod away from the suction mechanism; A base (3) is connected to an end of the adjusting body (2) away from the support rod, the base (3) is provided with an inverted tower-shaped annular slide rail (4), and a sliding sleeve (40) is provided on the inverted tower-shaped annular slide rail (4); the sliding sleeve (40) is connected to the suction mechanism rope; A circular slip ring (5) is rotatably arranged on the base (3), and the circular slip ring (5) is connected to the sliding sleeve (40) via an elastic telescopic rod; A three-dimensional laser scanner is arranged above the workpiece (8) and is used to collect contour information of the scanned workpiece (8).

2. The workpiece size detection device according to claim 1, characterized in that: The suction mechanism comprises an electromagnet assembly (101) and a vacuum suction cup assembly (102); the support rod is an L-shaped support rod (1); one free end of the L-shaped support rod (1) is connected to the electromagnet assembly (101), and the other free end is connected to the vacuum suction cup assembly (102); the intersection end of the L-shaped support rod (1) is hingedly arranged with the top of the adjusting body (2).

3. The workpiece size detection device according to claim 2, characterized in that: A hinge column (6) is provided at the top of the adjusting body (2), and a hinge sleeve (10) is provided at the intersection end of the L-shaped support rod (1), wherein the axial direction of the hinge sleeve (10) is perpendicular to a plane formed by two free sections of the L-shaped support rod (1); It also comprises a locking mechanism, which is used to lock the relative rotational position of the hinge sleeve (10) relative to the hinge column (6).

4. The workpiece size detection device according to claim 3, characterized in that: The locking mechanism comprises an elastic push rod (12), a clamping rod (11), a cross-shaped slot (60) and a conversion cavity (61); the elastic push rod (12) is slidably arranged in the side wall of the hinge sleeve (10) along the axial direction of the hinge sleeve (10); the clamping rod (11) is connected to an end of the elastic push rod (12) facing away from the end face of the hinge sleeve (10); the cross-shaped slot (60) is arranged on a cross section of the hinge column (6); the conversion cavity (61) is communicated with the cross-shaped slot (60) and is located on a side of the cross-shaped slot (60) facing the end face of the hinge column (6); When the clamping rod (11) is located in the conversion chamber (61), the hinge sleeve (10) and the hinge column (6) are in an unlocked state; When the clamping rod (11) is located in the cross clamping groove (60), the hinge sleeve (10) and the hinge column (6) are in a locked state.

5. The workpiece size detection device according to claim 4, characterized in that: There are two groups of locking mechanisms, and the two groups of locking mechanisms are symmetrically arranged along the middle cross section of the length direction of the hinge column (6); A sliding hole (13) for the elastic supporting rod (12) to slide is provided on the side wall of the hinge sleeve (10); Two of the two sets of the locking mechanisms are connected to each other in the sliding holes (13) facing each other, and correspondingly, rack rods (19) are arranged alternately up and down on the sides of the two elastic supporting rods (12) facing each other, and a gear (18) is rotatably arranged between the two rack rods (19), and the two rack rods (19) are meshed with the gear (18), and the gear (18) is rotatably arranged on the hinge column (6).

6. The workpiece size detection device according to claim 5, characterized in that: The ball head assembly comprises a first ball socket shell (1040), a second ball socket shell (1050) and a ball head (1060); the first ball socket shell (1040) is connected to the suction mechanism at a side facing away from the second ball socket shell (1050); the second ball socket shell (1050) is provided with a connecting hole (1070), and a free end of the L-shaped support rod (1) passes through the connecting hole (1070) and is connected to the ball head (1060); The first ball socket shell (1040), the second ball socket shell (1050), and the L-shaped support rod (1) are externally sleeved with an anti-bending spring (103); the top of the anti-bending spring (103) abuts against the side of the suction mechanism facing away from the workpiece (8), and the bottom abuts against a baffle (1030) provided on the L-shaped support rod (1).

7. The workpiece size detection device according to claim 6, characterized in that: The suction mechanism comprises a connecting arm (104), the connecting arm (104) being connected to a side of the suction mechanism facing away from the workpiece (8), and an end of the rope away from the sliding sleeve (40) being connected to an end of the connecting arm (104) away from the suction mechanism.

8. The workpiece size detection device according to claim 7, characterized in that: The adjusting body (2) is a lead screw guide rail telescopic assembly.

9. The workpiece size detection device according to claim 8, characterized in that: The base (3) is provided with a circular slide rail, the circular slip ring (5) is slidably arranged on the circular slide rail, a tooth groove (50) is provided on a side of the circular slip ring (5) away from the center of the base (3), and the base (3) is rotatably provided with a rotating toothed disc (9), and the rotating toothed disc (9) is meshed with the tooth groove (50).

10. The workpiece size detection device according to claim 9, characterized in that: The elastic telescopic rod comprises a plurality of telescopic joints (90), wherein the plurality of telescopic joints (90) are nested in sequence, and a telescopic spring is provided inside the telescopic joint (90).

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