CN214374590U - Positioning mechanism and flaw detection scanning device - Google Patents

Abstract

The utility model relates to a positioning mechanism and a flaw detection scanning device, which are used for placing a workpiece on at least two positioning components in the process of fixing the workpiece; starting a first driver to drive the transmission structure to perform corresponding activities; the transmission structure after the activity drives two at least setting elements and draws close to the work piece for every setting element all contradicts on the outer diameter face of work piece or the inner diameter face of work piece, thereby makes the work piece location on locating component. Because this positioning mechanism utilizes transmission structure to the setting element transmission for two at least setting elements slide simultaneously on the base that corresponds, consequently, at the location in-process, only need start first driver, order about the location that the work piece can be accomplished in the transmission structure activity, so, make the work piece obtain quick location, effectively improve the nondestructive test efficiency of work piece. And the sliding of all the positioning parts is controlled by the transmission structure, so that the stability of the transmission force on each positioning part is ensured, and the stress of the workpiece is balanced in each positioning process.

Description

Positioning mechanism and flaw detection scanning device

Technical Field

The utility model relates to a nondestructive test technical field especially relates to positioning mechanism and flaw detection scanning device.

Background

The nondestructive testing is a method for inspecting and testing the structure, properties, state, type, properties, quantity, shape, position, size, distribution and changes of defects inside and on the surface of a test piece by taking a physical or chemical method as a means and by means of modern technology and equipment and by utilizing the changes of thermal, acoustic, optical, electrical, magnetic and other reactions caused by the abnormal structure or the existence of the defects in the material on the premise of not damaging or not influencing the service performance of the tested object and not damaging the internal structure of the tested object.

Nondestructive testing is particularly important for safe operation of mechanical parts, for example, a bearing used by a railway vehicle, the quality of the railway bearing is an important part for ensuring the safe operation of railway locomotives, vehicles and motor trains (collectively referred to as railway vehicles), and the inner ring and the outer ring of the bearing realize high-speed relative motion through rollers. The bearing is installed on the railway vehicle, and the axle rotates on the steel rail at a high speed through the bearing, so that the high-speed running of the train is realized. The bearing inner ring and the bearing outer ring are formed into finished products by alloy steel through rolling forming, heat treatment and precision machining, internal defects such as inclusions, interlayers, cracks and the like can be generated in the whole process from raw materials to machining, and due to the internal defects, the bearing can generate fatigue defects with main characteristics such as stripping and cracks in the using process, particularly under the conditions of high gravity and high speed, and even can generate faults such as fracture, strain and the like seriously, so that accidents such as train overturning, derailing and the like can be caused.

In the nondestructive testing process, the traditional flaw detection device cannot stably and quickly position the workpiece, so that the workpiece is easy to shift in the testing process, the testing efficiency is reduced, and the testing precision of the workpiece is seriously influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need for a positioning mechanism and a flaw detection device, which can stably and rapidly position a workpiece, and improve detection efficiency, detection precision, accuracy of detecting defects, and equivalent size.

A positioning mechanism, the positioning mechanism comprising: a first base; the positioning assemblies are arranged on the first base and comprise a base and positioning pieces arranged on the base in a sliding mode, and the positioning pieces are matched with each other to abut against a workpiece and position the workpiece; the at least two positioning pieces are in transmission connection with the transmission structure, and when the transmission structure moves, the at least two positioning pieces move close to or away from each other; and an output shaft of the first driver is connected with the transmission structure, and the first driver is used for driving the transmission structure to move.

The positioning mechanism is used for placing the workpiece on the at least two positioning assemblies in the process of fixing the workpiece; starting a first driver to drive the transmission structure to perform corresponding activities; the transmission structure after the activity drives two at least setting elements and draws close to the work piece for every setting element all contradicts on the outer diameter face of work piece or the inner diameter face of work piece, thereby makes the work piece location on locating component. Because this positioning mechanism utilizes transmission structure to the setting element transmission for two at least setting elements slide simultaneously on the base that corresponds, consequently, at the location in-process, only need start first driver, order about the location that the work piece can be accomplished in the transmission structure activity, so, make the work piece obtain quick location, effectively improve the nondestructive test efficiency of work piece. And the sliding of all the positioning parts is controlled by the transmission structure, so that the stability of the transmission force on each positioning part is ensured, the stress of the workpiece is balanced in each positioning process, the workpiece is stabilized on the positioning assembly, the workpiece is prevented from moving in the detection process, and the nondestructive detection precision of the workpiece is improved.

In one embodiment, the transmission structure includes a first transmission member and at least two second transmission members, the first transmission member is connected with the output shaft of the first driver, the second transmission members are connected with the positioning member in a transmission manner, and at least two of the second transmission members are in gear connection or rotational connection with the first transmission member.

In one embodiment, the first transmission member is provided with a first bevel gear, the second transmission member is a screw rod, and the screw rod is provided with a second bevel gear engaged with the first bevel gear.

In one embodiment, the positioning assembly further comprises a sliding part, the sliding part is slidably mounted on the base, the positioning part is mounted on the sliding part, and the screw rod penetrates through the sliding part and is in threaded connection with the sliding part.

In one embodiment, the positioning assembly further includes a support, the second transmission member is rotatably mounted on the support, one end of the second transmission member is connected to the first transmission member through a gear, and the other end of the second transmission member is connected to the positioning member through a transmission.

In one embodiment, the first base is provided with a shaft hole, at least two positioning assemblies are arranged around the shaft hole at intervals in the circumferential direction, the first transmission piece is installed in the shaft hole, one end of the first transmission piece is connected with an output shaft of the first driver, and the other end of the first transmission piece is connected with at least two second transmission piece gears or in rotating connection.

In one embodiment, the positioning mechanism further comprises a second driver, an output shaft of the second driver is in driving fit with the first base, and the second driver is used for driving the first base to rotate.

The flaw detection scanning device comprises a grabbing mechanism, a flaw detection mechanism and any one of the grabbing mechanism and the flaw detection mechanism, wherein the grabbing mechanism is used for grabbing a workpiece onto the positioning assembly, and the flaw detection mechanism is used for carrying out flaw detection on the positioned workpiece.

The flaw detection scanning device adopts the positioning mechanism, and the workpiece is placed on the at least two positioning assemblies in the process of fixing the workpiece; starting a first driver to drive the transmission structure to perform corresponding activities; the transmission structure after the activity drives two at least setting elements and draws close to the work piece for every setting element all contradicts on the outer diameter face of work piece or the inner diameter face of work piece, thereby makes the work piece location on locating component. Because this positioning mechanism utilizes transmission structure to the setting element transmission for two at least setting elements slide simultaneously on the base that corresponds, consequently, at the location in-process, only need start first driver, order about the location that the work piece can be accomplished in the transmission structure activity, so, make the work piece obtain quick location, effectively improve the nondestructive test efficiency of work piece. And the sliding of all the positioning parts is controlled by the transmission structure, so that the stability of the transmission force on each positioning part is ensured, the stress of the workpiece is balanced in each positioning process, the workpiece is stabilized on the positioning assembly, the workpiece is prevented from moving in the detection process, and the nondestructive detection precision of the workpiece is improved.

In one embodiment, the grabbing mechanism includes a first moving structure, a second moving structure and a grabbing structure, the second moving structure is mounted on the first moving structure, the grabbing structure is mounted on the second moving structure, the first moving structure is configured to drive the second moving structure to move along a first direction, the second moving structure is configured to drive the grabbing structure to move along a second direction, the first direction and the second direction are perpendicularly intersected, and the grabbing structure is configured to grab the workpiece.

In one embodiment, the flaw detection mechanism comprises a third moving structure and a flaw detection structure, the flaw detection structure is mounted on the third moving structure, the third moving structure is used for driving the flaw detection structure to approach the workpiece, and the flaw detection structure is used for performing flaw detection on the workpiece.

In one embodiment, the flaw detection scanning device further comprises a detection room, the positioning mechanism and the flaw detection mechanism are both installed in the detection room, a through opening is formed in the detection room, and the grabbing mechanism is used for grabbing the workpiece onto the positioning assembly through the through opening.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a perspective view of a positioning mechanism according to one embodiment;

FIG. 2 is another perspective view of the positioning mechanism configuration described in one embodiment;

FIG. 3 is a schematic view of an embodiment of a positioning mechanism with exposed driving and driven gears;

FIG. 4 is a schematic view of a positioning member according to an embodiment;

FIG. 5 is a schematic structural diagram of an inspection scanning apparatus according to an embodiment;

FIG. 6 is a schematic diagram showing an internal structure of the flaw detection scanning apparatus according to one embodiment;

FIG. 7 is a schematic view of a grasping mechanism according to an embodiment;

FIG. 8 is a schematic view of a grasping configuration according to an embodiment;

FIG. 9 is a schematic diagram of the first gripper assembly or the second gripper assembly according to one embodiment;

FIG. 10 is a schematic view of a flaw detection mechanism according to one embodiment;

FIG. 11 is a schematic view of a flaw detection configuration described in one embodiment.

100. Positioning mechanism, 110, first base, 111, shaft hole, 120, positioning component, 121, base, 122, positioning component, 1221, first interference surface, 1222, second interference surface, 123, sliding component, 124, support, 130, transmission structure, 131, first transmission component, 1311, first bevel gear, 132, second transmission component, 1321, second bevel gear, 140, first driver, 141, driven gear, 150, second driver, 151, driving gear, 200, detection room, 210, access port, 300, grabbing mechanism, 310, first moving structure, 320, second moving structure, 330, grabbing structure, 331, mounting base, 332, first grabbing component, 3321, second base, 3322, third driver, 3323, grab, 333, second grabbing component, 340, adjusting component, 341, adjusting screw, 342, adjusting wheel, 400, flaw detection mechanism, 410, third moving structure, 411. The flaw detection device comprises a first moving assembly, a second moving assembly, a probe 420, a flaw detection structure, 421, a third base, 422, a fourth driver, 423, a swinging assembly, 4231, a first swinging wheel, 4232, a second swinging wheel, 4233, a transmission rod, 424, a probe, 500, a controller, 600 and a display screen.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In one embodiment, referring to fig. 1, a positioning mechanism 100, the positioning mechanism 100 includes: the first base 110, the positioning assembly 120, the transmission structure 130 and the first driver 140. At least two positioning assemblies 120 are mounted on the first base 110. The positioning assembly 120 includes a base 121 and a positioning member 122 slidably mounted on the base 121. At least two positioning members 122 are engaged to abut against the workpiece and position the workpiece. The at least two positioning parts 122 are in transmission connection with the transmission structure 130, and when the transmission structure 130 moves, the at least two positioning parts 122 move towards the workpiece or move away from the workpiece. The output shaft of the first driver 140 is connected to the transmission structure 130, and the first driver 140 is used for driving the transmission structure 130 to move.

The positioning mechanism 100, as described above, places the workpiece on at least two positioning assemblies 120 during the process of fixing the workpiece; starting the first driver 140 to drive the transmission structure 130 to perform corresponding activities; the movable transmission structure 130 drives the at least two positioning members 122 to move toward the workpiece, so that each positioning member 122 abuts against the outer diameter surface of the workpiece or the inner diameter surface of the workpiece, and the workpiece is positioned on the positioning assembly 120. Because this positioning mechanism 100 utilizes transmission structure 130 to the setting element 122 transmission for two at least setting elements 122 slide simultaneously on corresponding base 121, consequently, in the positioning process, only need start first driver 140, order about the activity of transmission structure 130 and can accomplish the location of work piece, so, make the work piece obtain quick location, effectively improve the nondestructive test efficiency of work piece. And the sliding of all the positioning parts 122 is controlled by the transmission structure 130, so that the stability of the transmission force on each positioning part 122 is ensured, the stress of the workpiece is balanced in each positioning process, the workpiece is stabilized on the positioning component 120, the workpiece is prevented from moving in the detection process, and the nondestructive detection precision of the workpiece and the accuracy and equivalent size of the detection defect are improved. In addition, since at least two positioning elements 122 are connected with the transmission structure 130, when the transmission structure 130 moves, the positioning elements 122 slide on the corresponding bases 121 synchronously, that is, the moving amount of each positioning element 122 on the base 121 is the same, so that the workpiece can be positioned at a specific position in each operation, which is beneficial to improving the reliability of the detection result; meanwhile, the center positioning of the workpiece is realized by the positioning mechanism 100 of the present embodiment.

It should be noted that the transmission connection of the present embodiment is understood as: when the transmission structure 130 moves, for example, the transmission structure 130 rotates or moves back and forth, and the positioning member 122 slides on the base 121 through the conversion between the structures. The positioning element 122 and the transmission structure 130 have various transmission connection modes, and the positioning element 122 can be moved close to or away from each other only after the transmission structure 130 moves. The equivalent size of the defect means that the return sound pressures of different types and sizes of defects (for example, ultrasonic flaw detection) are equivalent to those of a standard geometric reflector having the same sound path, and if the return sound pressures of the two types and sizes are the same, the equivalent size of the defect is equivalent to that of the defect.

Optionally, the positioning element 122 may be in transmission connection with the transmission structure 130 in a manner that: when the transmission structure 130 is a screw rod structure, the transmission structure 130 is in threaded connection with the positioning member 122, the screw rod structure rotates, and the positioning member 122 moves back and forth on the base 121 under the action of the threads; or, when the transmission structure 130 is a rack structure, the transmission structure 130 is fixedly connected or hinged with the positioning element 122, that is, the rack structure is driven by the gear to move back and forth, so that the positioning element 122 moves back and forth on the base 121; or, when the rack structure is a connecting structure, the connecting structure is rotatably connected to the positioning member 122, and the positioning member 122 is moved back and forth on the base 121 by using the principle of the link-slider mechanism.

Alternatively, the first driver 140 may be a telescopic driving device such as a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, etc.; or may be an electric motor. When the first driver 140 is a telescopic driving device such as an air cylinder, a hydraulic cylinder, an electric cylinder, etc., the transmission structure 130 is driven by the first driver 140 to move back and forth in a telescopic manner, so as to drive the positioning members 122 to move closer to each other or move away from each other; when the first driver 140 is a motor, the transmission structure 130 is driven by the first driver 140 to rotate, so as to drive the positioning members 122 to move close to or away from each other.

Further, referring to fig. 1, the transmission structure 130 includes a first transmission member 131 and at least two second transmission members 132. The first transmission member 131 is connected to an output shaft of the first driver 140. The second transmission member 132 is in transmission connection with the positioning member 122. At least two second transmission members 132 are each geared or rotationally connected to the first transmission member 131. Thus, the first transmission member 131 is matched with the second transmission member 132, so that the first driver 140 can drive the positioning member 122 to stably move on the base 121, and the positioning members 122 are close to each other, thereby stably clamping the workpiece.

It should be noted that, referring to fig. 1, when the second transmission member 132 is in gear connection with the first transmission member 131, the first transmission member 131 is or is provided with a gear, the second transmission member 132 is a rack or a combination structure of a gear and a screw rod, and at this time, the first driver 140 is a motor device; when the second transmission member 132 is rotatably connected to the first transmission member 131, the first transmission member 131 and the second transmission member 132 are both of a link structure, and at this time, the first driver 140 is a telescopic driving device such as an air cylinder, a hydraulic cylinder, an electric cylinder, and the like.

Further, referring to fig. 1, the first transmission member 131 is provided with a first bevel gear 1311. The second transmission member 132 is a screw rod, and a second bevel gear 1321 engaged with the first bevel gear 1311 is provided on the screw rod. Therefore, during the positioning process, the first driver 140 drives the first transmission member 131 to rotate; after the positioning member 122 is rotated, the first transmission member 131 is matched with the second bevel gear 1321 through the first bevel gear 1311 to drive the screw rod to rotate, so that the positioning member 122 moves back and forth on the base 121, and the positioning member 122 move closer to each other or move away from each other. Since the first transmission member 131 and the second transmission member 132 are engaged and driven by the bevel gears, the rotation directions of the first transmission member 131 and the second transmission member 132 are not on the same plane, which is beneficial to changing the placement positions between the first transmission member 131 and the second transmission member 132, so that the structural distribution among the first driver 140, the transmission structure 130 and the positioning assembly 120 becomes more compact. In addition, utilize the lead screw drive setting element 122 to remove, also can realize that setting element 122 locks on the lead screw, avoid the work piece to take place the drunkenness because of setting element 122 slides after the work piece location, promote the detection precision of work piece greatly.

Specifically, referring to fig. 1, the first transmission member 131 is a shaft structure, and the shaft structure is connected to the output shaft of the first driver 140 by a coupling connection or an interference fit connection. The first bevel gear 1311 is journaled on this shaft structure.

In one embodiment, referring to fig. 1, the positioning assembly 120 further includes a sliding member 123. The slider 123 is slidably mounted on the base 121. The positioning member 122 is mounted on the sliding member 123. The screw rod penetrates through the sliding member 123 and is in threaded connection with the sliding member 123, so that after the screw rod rotates, the sliding member 123 is driven to move on the screw rod, and the positioning member 122 is driven to move on the base 121.

In one embodiment, referring to fig. 1, the positioning assembly 120 further includes a support 124. The second transmission member 132 is rotatably mounted on the support 124, one end of the second transmission member 132 is in gear connection with the first transmission member 131, and the other end of the second transmission member 132 is in transmission connection with the positioning member 122, so that the second transmission member 132 can rotate smoothly through the support 124, and the workpiece positioning deviation caused by the shaking of the second transmission member 132 during rotation is avoided.

Further, referring to fig. 2, a shaft hole 111 is formed on the first base 110. At least two positioning assemblies 120 are spaced circumferentially about axial bore 111. The first transmission member 131 is installed in the shaft hole 111, one end of the first transmission member 131 is connected to the output shaft of the first driver 140, and the other end of the first transmission member 131 is gear-connected or rotatably connected to at least two second transmission members 132. Therefore, the first transmission member 131 of the present embodiment is surrounded by the positioning assembly 120, and when the first transmission member 131 moves, the second transmission member 132 is driven to correspondingly move, so that the peripheral positioning member 122 moves towards the first transmission member 131 at the same time, and the workpiece is stably clamped.

Specifically, referring to fig. 2, there are three positioning assemblies 120, the three positioning assemblies 120 are spaced around the axial hole 111, and the positioning assemblies 120 extend along the radial direction of the axial hole 111.

In one embodiment, referring to fig. 3, the positioning mechanism 100 further includes a second driver 150. The output shaft of the second driver 150 is in driving fit with the first base 110, and the second driver 150 is used for driving the first base 110 to rotate. Therefore, after the workpiece is positioned, the second driver 150 is started, the first base 110 is driven to rotate, the positioning component 120 on the first base 110 is driven to rotate together with the positioned workpiece, and thus, in the flaw detection process, the flaw detection mechanism 400 can be ensured to be stationary, the flaw detection of a week of the workpiece can be realized, the requirement of rotating the large flaw detection mechanism 400 is avoided, and the workpiece is greatly convenient to detect.

It should be noted that a drive fit is understood as: when the second driver 150 is activated, it can drive the first base 110 to rotate. There are various driving matching manners, for example, the output shaft of the second driver 150 and the first base 110 are in meshing transmission through gears and gears; the transmission of the two can be realized by a belt or a chain, etc.

Specifically, referring to fig. 3, the second driver 150 is a motor, an output shaft of the motor is sleeved with a driving gear 151, and the first base 110 is sleeved with a driven gear 141 engaged with the driving gear 151.

It should be further noted that, referring to fig. 3, when the first transmission member 131 and the second transmission member 132 are transmitted by the bevel gear, the first base 110 drives the positioning assembly 120 to rotate, and the second transmission member 132 also drives the first transmission member 131 to rotate synchronously by the bevel gear, so as to ensure that the first transmission member 131 and the second transmission member 132 are relatively stationary, and prevent the first transmission member 131 and the second transmission member 132 from moving relatively due to the rotation of the first base 110, thereby preventing the positioning member 122 from moving and loosening the positioning of the workpiece. Of course, the first base 110 can drive the entire first driver 140 to rotate.

In one embodiment, referring to fig. 4, the positioning element 122 has a first abutting surface 1221 and a second abutting surface 1222 at opposite sides thereof, respectively. The first abutting surface 1221 is for abutting against an outer side surface of the workpiece. The second abutting surface 1222 is configured to abut against an inner side surface of the workpiece, so that the positioning element 122 can position the inner ring and the outer ring of the workpiece, respectively, and the inspection mechanism 400 can inspect the inner ring and the outer ring of the workpiece, respectively.

Specifically, referring to fig. 4, the first abutting surface 1221 and the second abutting surface 1222 are circular surfaces, respectively. It should be noted that the inner and outer side surfaces of the workpiece are understood as follows: the workpiece is provided with an inner cavity, taking a bearing sleeve as an example, the bearing sleeve is provided with an inner ring, one side of the bearing sleeve, which is back to the inner ring, is an outer side, and one side, which faces the inner ring, is an inner side.

In one embodiment, referring to fig. 1, 5 and 6, an inspection scanning apparatus includes a capturing mechanism 300, an inspection mechanism 400 and a positioning mechanism 100 in any of the above embodiments. The gripping mechanism 300 is used to grip a workpiece onto the positioning assembly 120. The flaw detection mechanism 400 is used for flaw detection of the positioned workpiece.

The flaw detection scanning device adopts the positioning mechanism 100, and places the workpiece on at least two positioning assemblies 120 through the grabbing mechanism 300 in the process of fixing the workpiece; starting the first driver 140 to drive the transmission structure 130 to perform corresponding activities; the movable transmission structure 130 drives the at least two positioning members 122 to approach the workpiece, so that each positioning member 122 abuts against the outer diameter surface of the workpiece or the inner diameter surface of the workpiece, and the workpiece is positioned on the positioning assembly 120; after the positioning, flaw detection is performed on the workpiece by the flaw detection mechanism 400. Because this positioning mechanism 100 utilizes transmission structure 130 to the setting element 122 transmission for two at least setting elements 122 slide simultaneously on corresponding base 121, consequently, in the positioning process, only need start first driver 140, order about the activity of transmission structure 130 and can accomplish the location of work piece, so, make the work piece obtain quick location, effectively improve the nondestructive test efficiency of work piece. And the sliding of all the positioning parts 122 is controlled by the transmission structure 130, so that the stability of the transmission force on each positioning part 122 is ensured, the stress of the workpiece is balanced in each positioning process, the workpiece is stabilized on the positioning component 120, the workpiece is prevented from moving in the detection process, and the nondestructive detection precision of the workpiece is improved.

Further, referring to fig. 7, the grabbing mechanism 300 includes a first moving structure 310, a second moving structure 320 and a grabbing structure 330. The second moving structure 320 is mounted on the first moving structure 310. The grabbing structure 330 is mounted on the second moving structure 320. The first moving structure 310 is used to drive the second moving structure 320 to move along the first direction. The second moving structure 320 is used for driving the grabbing structure 330 to move along the second direction. The first direction and the second direction are intersected. The grasping configuration 330 is used to grasp a workpiece. Therefore, the second moving structure 320 is driven to move along the first direction by the first moving structure 310, so that the grabbing structure 330 is located above the workpiece; driving the grabbing structure 330 to move along the second direction by the second moving structure 320, so that the grabbing structure 330 can contact the workpiece; then, the workpiece is grabbed by the grabbing structure 330; finally, the workpiece is placed on the positioning assembly 120 by the grabbing mechanism 330 through the second moving mechanism 320 and the first moving mechanism 310 again, so that the workpiece is stably picked and placed.

Specifically, the first direction and the second direction are vertically arranged. The first moving structure 310 and the second moving structure 320 are linear modules, and the grabbing structure 330 is moved along the first direction and the second direction by using a screw transmission principle. Of course, in other embodiments, the first moving structure 310 and the second moving structure 320 may be air cylinders or hydraulic cylinders.

Further, referring to fig. 8, the grabbing structure 330 includes a mounting base 331, and a first grabbing component 332 and a second grabbing component 333 which are spaced apart from each other and disposed on the mounting base 331, wherein the first grabbing component 332 and the second grabbing component 333 are engaged with each other for grabbing the workpiece.

In one embodiment, referring to fig. 8, the grabbing structure 330 further includes an adjusting component 340 mounted on the mounting base 331, wherein the adjusting component 340 is used for adjusting the distance between the first grabbing component 332 and the second grabbing component 333, so that the distance between the first grabbing component 332 and the second grabbing component 333 is finely adjusted by the adjusting component 340, so that the first grabbing component 332 and the second grabbing component 333 grab the workpiece better.

Further, referring to fig. 8, the adjusting assembly 340 includes an adjusting wheel 342 and an adjusting screw 341, the adjusting wheel 342 is disposed on the adjusting screw 341, the adjusting screw 341 is rotatably mounted on the mounting base 331, the first grabbing assembly 332 and the second grabbing assembly 333 are respectively screwed on the adjusting screw 341, and thus, the adjusting wheel 342 is rotated to rotate the adjusting screw 341, so that the first grabbing assembly 332 and the second grabbing assembly 333 respectively move on the adjusting screw 341 to adjust the distance therebetween.

In one embodiment, referring to fig. 9, each of the first gripping assembly 332 and the second gripping assembly 333 includes a second base 3321, a third actuator 3322, and a hand grip 3323, wherein the second base 3321 is mounted on the mounting base 331, the third actuator 3322 is mounted on the second base 3321, and the hand grip 3323 is slidably mounted on the second base 3321 and drivingly engaged with an output shaft of the third actuator 3322, such that the hand grip 3323 is driven to slide on the second base 3321 by the third actuator 3322, such that the two hand grips 3323 are moved toward each other to grip the workpiece.

Optionally, third actuator 3322 is an air cylinder, a hydraulic cylinder, an electric cylinder, or the like.

In one embodiment, referring to FIG. 10, inspection mechanism 400 includes a third moving structure 410 and an inspection structure 420. Inspection structure 420 is mounted on third mobile structure 410. The third moving structure 410 is used to drive the inspection structure 420 toward the workpiece. Flaw detection structure 420 is used to perform flaw detection tests on the workpiece. Therefore, after the workpiece is positioned, the third moving structure 410 is started to drive the flaw detection structure 420 to move towards the workpiece, so that the flaw detection structure 420 approaches the workpiece, and the workpiece can be detected by the flaw detection structure 420.

Further, referring to fig. 10, the third moving structure 410 includes a first moving assembly 411 and a second moving assembly 412, the second moving assembly 412 is mounted on the first moving assembly 411, the flaw detection structure 420 is mounted on the second moving assembly 412, and the first moving assembly 411 and the second moving assembly 412 respectively drive the flaw detection structure 420 to move along different directions, so that the flaw detection structure 420 can move to a specific position more accurately by moving the apparatus in two different directions, thereby enabling the flaw detection structure 420 to detect the workpiece better.

Specifically, referring to fig. 10, the first moving assembly 411 and the second moving assembly 412 are linear modules, and the flaw detection structure 420 moves along two different directions respectively by using a screw transmission principle.

In one embodiment, referring to fig. 11, the flaw detection structure 420 includes a third base 421, a fourth driver 422, a swinging component 423, and a probe 424, the third base 421 is mounted on the second moving component 412, the fourth driver 422 is mounted on the third base 421, the probe 424 is rotatably mounted on the third base 421, the swinging component 423 is connected between an output shaft of the fourth driver 422 and the probe 424, the fourth driver 422 is used for driving the probe 424 to swing on the third base 421 through the swinging component 423, and thus, the probe 424 is tilted on the third base 421 by the fourth driver 422, so that the probe 424 can perform flaw detection on a tapered surface or a tilted surface, and flaw detection of a conical surface and a curved surface bearing is achieved.

Further, referring to fig. 11, the fourth driver 422 is a motor, the swing assembly 423 includes a first swing wheel 4231, a second swing wheel 4232 and a transmission rod 4233 connected between the first swing wheel 4231 and the second swing wheel 4232, the first swing wheel 4231 is installed on an output shaft of the motor, and the second swing wheel 4232 is installed on the probe 424, so that the motor is started to rotate the first swing wheel 4231; and then the transmission rod 4233 is linked with the second swinging wheel 4232 to rotate, so that the probe 424 swings on the third base 421, and the flaw detection of the probe 424 on the conical and curved bearings is realized.

Alternatively, the probe 424 is an electromagnetic flaw detector or an ultrasonic flaw detector, and since the internal structure of the probe 424 is not a modified object of the present embodiment, it will not be described in detail herein, and reference may be made to the actual product structure.

In one embodiment, referring to fig. 5, the inspection scanning apparatus further includes an inspection room 200. The positioning mechanism 100 and the flaw detection mechanism 400 are both installed in the detection room 200. The detection room 200 is provided with a through opening 210. The gripper mechanism 300 is used to grip the workpiece onto the positioning assembly 120 through the access port 210. Therefore, flaw detection is completed in the detection room 200, and the detection reliability is greatly improved.

Further, referring to fig. 5, the flaw detection scanning apparatus further includes an input device (not shown) and an output device (not shown), which are respectively located at two sides of the detection room 200, so that the workpieces are stably supplied to the detection room 200 through the input device and the output device, and the workpieces in the detection room 200 are also stably output.

Alternatively, the input device and the output device are both belt conveyors, chain conveyors, roller wheel conveyors, etc.

In an embodiment, referring to fig. 5 and fig. 6, the flaw detection scanning apparatus further includes a display screen 600 and a controller 500, and the display screen 600, the positioning mechanism 100, the capturing mechanism 300, and the flaw detection mechanism 400 are all electrically connected to the controller 500, so as to implement automatic control of the flaw detection scanning apparatus. Meanwhile, the parameter debugging and the automatic control of the operating personnel are facilitated through the display screen 600.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A positioning mechanism, characterized in that the positioning mechanism comprises:

a first base;

the positioning assemblies are arranged on the first base and comprise a base and positioning pieces arranged on the base in a sliding mode, and the positioning pieces are matched with each other to abut against a workpiece and position the workpiece;

the at least two positioning pieces are in transmission connection with the transmission structure, and when the transmission structure moves, the at least two positioning pieces move close to or away from each other; and

the output shaft of the first driver is connected with the transmission structure, and the first driver is used for driving the transmission structure to move.

2. The positioning mechanism as set forth in claim 1, wherein the transmission structure comprises a first transmission member and at least two second transmission members, the first transmission member is connected with the output shaft of the first driver, the second transmission member is connected with the positioning member in a transmission manner, and at least two of the second transmission members are in gear connection or rotational connection with the first transmission member.

3. The positioning mechanism as set forth in claim 2, wherein said first transmission member is provided with a first bevel gear, said second transmission member is a lead screw, and said lead screw is provided with a second bevel gear engaged with said first bevel gear.

4. The positioning mechanism as set forth in claim 3, wherein said positioning assembly further comprises a slider, said slider is slidably mounted on said base, said positioning member is mounted on said slider, and said lead screw penetrates said slider and is threadedly connected to said slider.

5. The positioning mechanism as set forth in claim 2, wherein said positioning assembly further comprises a support, said second transmission member is rotatably mounted on said support, one end of said second transmission member is connected to said first transmission member via a gear, and the other end of said second transmission member is connected to said positioning member via a transmission.

6. The positioning mechanism according to claim 2, wherein a shaft hole is formed in the first base, at least two positioning assemblies are circumferentially spaced around the shaft hole, the first transmission member is installed in the shaft hole, one end of the first transmission member is connected to the output shaft of the first driver, and the other end of the first transmission member is in gear connection or rotational connection with at least two second transmission members.

7. The positioning mechanism according to any one of claims 1-6, further comprising a second driver, an output shaft of the second driver being in driving engagement with the first base, the second driver being configured to drive the first base in rotation.

8. A flaw detection scanning device is characterized by comprising a grabbing mechanism, a flaw detection mechanism and the positioning mechanism of any one of claims 1-7, wherein the grabbing mechanism is used for grabbing a workpiece onto the positioning assembly, and the flaw detection mechanism is used for carrying out flaw detection on the positioned workpiece.

9. The flaw detection scanning apparatus according to claim 8, wherein the grasping mechanism includes a first moving structure, a second moving structure, and a grasping structure, the second moving structure is mounted on the first moving structure, the grasping structure is mounted on the second moving structure, the first moving structure is configured to drive the second moving structure to move along a first direction, the second moving structure is configured to drive the grasping structure to move along a second direction, the first direction and the second direction are perpendicularly intersected, and the grasping structure is configured to grasp the workpiece.

10. The flaw detection scanning device according to claim 8, wherein the flaw detection mechanism comprises a third moving structure and a flaw detection structure, the flaw detection structure is mounted on the third moving structure, the third moving structure is used for driving the flaw detection structure to move towards the workpiece, and the flaw detection structure is used for carrying out flaw detection on the workpiece; and/or the presence of a gas in the gas,

the flaw detection scanning device further comprises a detection room, the positioning mechanism and the flaw detection mechanism are installed in the detection room, a through hole is formed in the detection room, and the grabbing mechanism is used for grabbing the workpiece to the positioning assembly through the through hole.

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