CN114160823A

CN114160823A - Machine vision cutter of CNC lathe

Info

Publication number: CN114160823A
Application number: CN202111659802.XA
Authority: CN
Inventors: 周围; 郭浩天
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-03-11

Abstract

The invention relates to the field of CNC machine tools, in particular to a machine vision cutter of a CNC machine tool, which comprises a translation mechanism, a vision detection mechanism, a rotating mechanism and a cable retracting mechanism, wherein the translation mechanism is arranged on the machine vision cutter; the camera in the machine vision detection system can be installed in the CNC machine tool by the aid of the vision detection mechanism, so that a machined part and a cutter can be synchronously detected in the machining process, and when the machining precision of the part is reduced due to inaccurate installation of the cutter changing position or abrasion of a cutter head, the vision detection mechanism can be matched with the machine vision detection system to quickly detect fault reasons, so that workers can conveniently and timely handle the fault, and unqualified parts are prevented from being continuously machined and produced; the translation mechanism and the rotating mechanism can be used for assisting in driving the vision detection mechanism to rotate and move around the part machining position on the CNC machine tool, so that the vision detection mechanism can conveniently carry out multi-angle shooting detection on the cutter and the machined part, and the detection precision is improved.

Description

Machine vision cutter of CNC lathe

Technical Field

The invention relates to the field of CNC machine tools, in particular to a machine vision cutter of a CNC machine tool.

Background

When a CNC machine tool is used for machining and producing precise parts, the CNC machine tool needs to detect the products through a machine vision detection system after the products are machined, and check whether machining processes of the CNC machine tool are omitted or whether the sizes of measured parts meet drawings or not so as to confirm that the products meet industrial requirements and standards. The machine vision detection system adopts a CCD camera to convert a detected target into an image signal, transmits the image signal to a special image processing system, converts the image signal into a digital signal according to information such as pixel distribution, brightness, color and the like, performs various operations on the signal by the image processing system to extract characteristics of the target, such as area, quantity, position and length, and outputs a result according to preset allowance and other conditions to realize an automatic identification detection function.

At present, the product quality when CNC lathe processing precision parts is mainly because the cutter influences, for example in aeronautical structure numerical control course of working, the material resection rate is very high, moreover because aeronautical structure shape is complicated, the course of working requires strictly, simultaneously again in order to improve machining efficiency, results in that the cutter quantity is big, the variety is many, the consumption is serious, when the position installation is inaccurate or the tool bit wearing and tearing when the cutter tool changing, all can influence the accuracy of product processing. And the machine vision detection system is used for detecting the parts after the product is machined, so that the problem of a machine tool cutter cannot be found in time, and the machine tool is continuously used for production and machining before a defective product is detected, so that a large number of defective products can be generated, and the production and machining cost of the machine tool is increased.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a machine vision cutter of a CNC machine tool.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a machine vision cutter of CNC lathe, includes translation mechanism, visual detection mechanism, rotary mechanism, cable jack, is used for the drive visual detection mechanism removes translation mechanism install in the top of CNC lathe, be used for the drive visual detection mechanism rotary motion rotary mechanism install in translation mechanism is last, be used for right visual detection mechanism's connecting wire receive and releases cable jack install in the visual detection mechanism.

Further, translation mechanism includes first motor, first bearing, lead screw, slider, mounting panel, connecting rod, the lead screw passes through first bearing movable mounting in the top of CNC lathe, first motor fixed mounting in the top of CNC lathe, and with the lead screw transmission is connected, slider screw thread install in on the lead screw, just the top surface of slider with the top sliding connection of CNC lathe, connecting rod fixed mounting in the bottom surface of slider, mounting panel fixed mounting in the bottom of connecting rod.

Further, visual detection mechanism includes arc slat, track, removal seat, camera, light, a plurality of walking wheels, motor, walking transmission unit, the arc slat passes through rotary mechanism with the mounting panel transmission is connected, the track set up in the medial surface of track arc slat, remove seat slidable mounting in the track, the camera with the light all install in remove the top surface of seat, motor fixed mounting in remove the inside of seat, it is a plurality of the walking wheel set up in the track to symmetrical movable mounting in remove the both sides of seat lower extreme, the motor passes through walking transmission unit with walking wheel transmission is connected.

Furthermore, the walking transmission unit comprises a first bevel gear, a second bevel gear, a first transmission rod, a second bearing, a third bevel gear, a fourth bevel gear, a driving shaft and a driven shaft, the first bevel gear is fixedly installed on an output shaft of the motor, the driving shaft and the driven shaft are movably installed at the lower end of the movable seat, the driving shaft and the two ends of the driven shaft are respectively provided with the walking wheel, the driving shaft is fixedly provided with the fourth bevel gear, the first transmission rod is movably installed in the movable seat through the second bearing, the second bevel gear is fixedly installed at the upper end of the first transmission rod and is in meshing transmission connection with the first bevel gear, and the third bevel gear is fixedly installed at the lower end of the first transmission rod and is in meshing transmission connection with the fourth bevel gear.

Further, rotary mechanism includes second motor, two curb plates, first gear, arc rack, two spacing splint, two curb plates fixed mounting respectively in the both sides of mounting panel bottom surface, second motor fixed mounting in one of them the outside of curb plate, first gear movable mounting in two between the curb plate, and with second motor drive is connected, two spacing splint fixed mounting respectively in two the bottom of curb plate, the arc slat slides to press from both sides and presss from both sides in between the spacing splint, arc rack fixed mounting in the back of arc slat, and with first gear engagement transmission is connected.

Further, the cable retracting mechanism comprises a wire inlet hole, a mounting seat, a coil spring box, a coil spring, a winding roller, a rotary joint, a wire clamping hole, a connecting plate and a roller shaft, wherein the winding roller is movably arranged in the moving seat through the mounting seat, one end of the winding roller is connected with the coil spring box through the roller shaft, the wire inlet hole is formed above the winding roller, the wire clamping hole extending to one end of the winding roller is formed in the winding surface of the winding roller, one end of the rotary joint is fixedly connected with the center of one end of the winding roller through the connecting plate, the other end of the rotary joint is fixedly connected with the inner wall of the moving seat, the coil spring box is fixedly arranged in the moving seat, the coil spring wound on the roller shaft is arranged in the coil spring box, and one end of the coil spring is fixedly connected with the roller shaft, the other end is fixedly connected with the inner wall of the coil spring box.

The invention has the beneficial effects that:

(1) according to the machine vision cutter of the CNC machine tool, the camera in the machine vision detection system can be installed in the CNC machine tool through the use of the vision detection mechanism, so that a machined part and the cutter can be synchronously detected in the machining process, and when the machining precision of the part is reduced due to inaccurate installation of the cutter changing position or abrasion of a cutter head, the vision detection mechanism can be matched with the machine vision detection system to quickly detect a fault reason, so that a worker can conveniently and timely process the fault, and unqualified parts are prevented from being continuously machined and produced.

(2) According to the machine vision tool of the CNC machine tool, the translation mechanism and the rotating mechanism are used for assisting in driving the vision detection mechanism to rotate around the part machining position on the CNC machine tool, so that the vision detection mechanism can conveniently carry out multi-angle shooting detection on the tool and the machined part, and the detection precision is improved.

(3) According to the machine vision cutter of the CNC machine tool, the cable retraction mechanism can be used for retracting and releasing the connecting wire of the vision detection mechanism, so that the influence of overlong connecting wire on normal machining of the CNC machine tool is prevented.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure provided by the present invention;

fig. 2 is a schematic view of a connection structure between the rotating mechanism and the visual inspection mechanism shown in fig. 1;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 4 is a schematic structural view of the movable base shown in FIG. 2;

FIG. 5 is a cross-sectional view taken in the direction M-M of FIG. 4;

FIG. 6 is an enlarged view of the structure at B in FIG. 5;

in the figure: 100. a CNC machine tool; 1. a translation mechanism; 11. a first motor; 12. a first bearing; 13. a screw rod; 14. a slider; 15. mounting a plate; 16. a connecting rod; 2. a visual detection mechanism; 21. an arc-shaped batten; 22. a track; 23. a movable seat; 24. a camera; 25. an illuminating lamp; 26. a traveling wheel; 27. a motor; 28. a walking transmission unit; 281. a first bevel gear; 282. a second bevel gear; 283. a first drive lever; 284. a second bearing; 285. a third bevel gear; 286. a fourth bevel gear; 287. a drive shaft; 288. a driven shaft; 3. a rotation mechanism; 31. a second motor; 32. a side plate; 33. a first gear; 34. an arc-shaped rack; 35. a limiting clamp plate; 4. a cable retracting mechanism; 41. a wire inlet hole; 42. a mounting seat; 43. a spring coiling box; 44. a coil spring; 45. a rolling roller; 46. a rotary joint; 47. a wire clamping hole; 48. a connecting plate; 49. a roll shaft.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-6, the machine vision tool of a CNC machine tool according to the present invention includes a translation mechanism 1, a vision detection mechanism 2, a rotation mechanism 3, and a cable retraction mechanism 4, wherein the translation mechanism 1 for driving the vision detection mechanism 2 to move left and right is installed on the top of the CNC machine tool 100, the rotation mechanism 3 for driving the vision detection mechanism 2 to move rotationally is installed on the translation mechanism 1, and the cable retraction mechanism 4 for retracting a connection wire of the vision detection mechanism 2 is installed in the vision detection mechanism 2; the vision detection mechanism 2 can be used for installing a camera in a machine vision detection system in the CNC machine tool 100, so that a machined part and a cutter can be synchronously detected in the machining process, and when the machining precision of the part is reduced due to inaccurate installation of the cutter changing position or abrasion of a cutter head, the vision detection mechanism 2 can be matched with the machine vision detection system to quickly detect a fault reason, so that a worker can conveniently and timely process the part, and unqualified parts are prevented from being continuously machined and produced; the translation mechanism 1 and the rotating mechanism 3 can be used for assisting in driving the vision detection mechanism 2 to rotate around the part machining position in the CNC machine tool 100, so that the vision detection mechanism 2 can conveniently carry out multi-angle shooting detection on the tool and the machined part, and the detection precision is improved; the cable retraction mechanism 4 can retract the connecting wire of the visual detection mechanism 2, and the influence of overlong connecting wire on the normal processing of the CNC machine tool 100 is prevented.

The translation mechanism 1 comprises a first motor 11, a first bearing 12, a screw rod 13, a slide block 14, a mounting plate 15 and a connecting rod 16, wherein the screw rod 13 is movably mounted at the top of the CNC machine tool 100 through the first bearing 12, the first motor 11 is fixedly mounted at the top of the CNC machine tool 100 and is in transmission connection with the screw rod 13, the slide block 14 is mounted on the screw rod 13 in a threaded manner, the top surface of the slide block 14 is in sliding connection with the top of the CNC machine tool 100, the connecting rod 16 is fixedly mounted at the bottom surface of the slide block 14, and the mounting plate 15 is fixedly mounted at the bottom end of the connecting rod 16; when the CNC machine tool 100 moves the machining tool and the part left and right, the first motor 11 drives the screw rod 13 to rotate, so that the slider 14 is driven to move left and right along the screw rod 13 through thread transmission, the connecting rod 16 and the mounting plate 15 are driven to move left and right, and the visual detection mechanism 2 mounted below the mounting plate 15 moves along with the movement.

The visual detection mechanism 2 comprises an arc-shaped strip plate 21, a track 22, a moving seat 23, a camera 24, an illuminating lamp 25, a plurality of traveling wheels 26, a motor 27 and a traveling transmission unit 28, wherein the arc-shaped strip plate 21 is in transmission connection with the mounting plate 15 through the rotating mechanism 3, the track 22 is arranged on the inner side surface of the arc-shaped strip plate 21 of the track, the moving seat 23 is slidably mounted in the track 22, the camera 24 and the illuminating lamp 25 are both mounted on the top surface of the moving seat 23, the motor 27 is fixedly mounted inside the moving seat 23, the traveling wheels 26 are arranged in the track 22 and symmetrically and movably mounted on two sides of the lower end of the moving seat 23, and the motor 27 is in transmission connection with the traveling wheels 26 through the traveling transmission unit 28; when the visual inspection mechanism 2 works, the illuminating lamp 25 provides a light source, the camera 24 shoots and collects image information, and meanwhile, the motor 27 drives the traveling wheels 26 to rotate through the traveling transmission unit 28, so that the moving seat 23 moves in the track 22, the camera 24 and the illuminating lamp 25 are further driven to move, and multi-angle and multi-direction shooting and inspection are carried out on the cutter and the machined part.

The walking transmission unit 28 comprises a first bevel gear 281, a second bevel gear 282, a first transmission rod 283, a second bearing 284, a third bevel gear 285, a fourth bevel gear 286, a driving shaft 287, and a driven shaft 288, wherein the first bevel gear 281 is fixedly installed on the output shaft of the motor 27, the driving shaft 287 and the driven shaft 288 are movably installed at the lower end of the movable seat 23, the walking wheels 26 are installed at both ends of the driving shaft 287 and the driven shaft 288, the fourth bevel gear 286 is fixedly installed on the driving shaft 287, the first transmission rod 283 is movably installed inside the movable seat 23 through the second bearing 284, the second bevel gear 282 is fixedly installed at the upper end of the first transmission rod 283 and is in meshing transmission connection with the first bevel gear 281, the third bevel gear 285 is fixedly installed at the lower end of the first transmission rod 283 and is in meshing transmission connection with the fourth bevel gear 286, when the motor 27 is turned on, the first driving rod 283 is driven to rotate by the first bevel gear 281 and the second bevel gear 282, and the driving shaft 287 is driven to rotate by the third bevel gear 285 and the fourth bevel gear 286, so that the traveling wheels 26 at both ends of the driving shaft 287 are driven to rotate on the track 22, and the movable base 23 is driven to move along the track 22.

The rotating mechanism 3 comprises a second motor 31, two side plates 32, a first gear 33, an arc-shaped rack 34 and two limiting clamping plates 35, wherein the two side plates 32 are respectively and fixedly mounted at two sides of the bottom surface of the mounting plate 15, the second motor 31 is fixedly mounted at the outer side of one side plate 32, the first gear 33 is movably mounted between the two side plates 32 and is in transmission connection with the second motor 31, the two limiting clamping plates 35 are respectively and fixedly mounted at the bottoms of the two side plates 32, the arc-shaped slat 21 is slidably clamped between the two limiting clamping plates 35, and the arc-shaped rack 34 is fixedly mounted at the back of the arc-shaped slat 21 and is in meshing transmission connection with the first gear 33; the vision detection mechanism 2 is initially located on the inner side surface of the interior of the CNC machine tool 100, so that the inner side directions of the tool and the part can be detected, when the outer side direction needs to be detected, the second motor 31 is started, the first gear 33 is driven to rotate, the first gear 33 drives the arc-shaped lath 21 to rotate and move between the two limiting clamping plates 35 through the arc-shaped rack 34 until the arc-shaped lath 21 rotates from the upper end of the CNC machine tool 100 to the outer side direction of the CNC machine tool 100, namely, at the moment, the vision detection mechanism 2 is located on the outer side direction of the tool and the part, so that the outer side direction of the tool and the part can be shot and detected.

The cable winding and unwinding mechanism 4 comprises a wire inlet 41, a mounting seat 42, a coil spring box 43, a coil spring 44, a winding roller 45, a rotary joint 46, a wire clamping hole 47, a connecting plate 48 and a roller shaft 49, wherein the winding roller 45 is movably mounted in the moving seat 23 through the mounting seat 42, one end of the winding roller 45 is connected with the coil spring box 43 through the roller shaft 49, the wire inlet 41 is arranged above the winding roller 45, the winding surface of the winding roller 45 is provided with the wire clamping hole 47 extending to one end of the winding roller 45, one end of the rotary joint 46 is fixedly connected with the center of one end of the winding roller 45 through the connecting plate 48, the other end of the rotary joint 46 is fixedly connected with the inner wall of the moving seat 23, the coil spring box 43 is fixedly mounted in the moving seat 23, the coil spring 44 wound on the roller shaft 49 is arranged in the coil spring box 43, one end of the coil spring 44 is fixedly connected with the roller shaft 49, and the other end of the coil spring is fixedly connected with the inner wall of the coil spring box 43; the connecting wire of the vision detection mechanism 2 is wound on the winding roller 45 through the upper-end wiring hole of the CNC machine tool 100 and the wire inlet hole 41, one end of the connecting wire passes through the wire clamping hole 47 and is connected with one end of the rotary joint 46, the other end of the rotary joint 46 is connected with the vision detection mechanism 2, wherein the rotary joint 46 adopts an MT series through-hole conductive slip ring sold by shenzhen shangmifulong science and technology ltd, and a matching circuit is provided by a merchant; when moving seat 23 down, the connecting wire pulling rolling roller 45 is rotatory unreeling, makes the synchronous extension of connecting wire, has sufficient length to supply moving seat 23 removes the walking, simultaneously the rotatory rolling of roller axle 49 is tightened coil spring 44 works as when moving seat 23 goes upward, the connecting wire is not hard up, is no longer in the taut coil spring 44 of state of tightening, at this moment, coil spring 44 is not hard up to reset to drive roller axle 49 is rotatory to reset, and then drives rolling roller 45 is rotatory, begins the rolling connecting wire, prevents that the connecting wire overlength from influencing CNC lathe 100 work.

When the CNC machine tool is used, the vision detection mechanism 2 is initially positioned on the inner side surface of the interior of the CNC machine tool 100, so that the feeding and the working of the CNC machine tool 100 are not hindered; during detection, the first motor 11 drives the screw rod 13 to rotate, so that the slide block 14 is driven to move left and right along the screw rod 13 through thread transmission, the connecting rod 16 and the mounting plate 15 are driven to move left and right, and the visual detection mechanism 2 mounted below the mounting plate 15 moves along with the movement to align to a machining position; the illuminating lamp 25 provides a light source, the camera 24 shoots and collects image information, and meanwhile the motor 27 drives the travelling wheels 26 to rotate through the travelling transmission unit 28, so that the moving seat 23 moves in the track 22, the camera 24 and the illuminating lamp 25 are driven to move, and multi-angle and multi-direction shooting detection is carried out on the cutter and the machined part; when the outside directions of the tool and the workpiece need to be detected, the second motor 31 is started to drive the first gear 33 to rotate, the first gear 33 drives the arc-shaped strip plate 21 to rotate and move between the two limiting clamping plates 35 through the arc-shaped rack 34 until the arc-shaped strip plate 21 rotates from the upper end of the CNC machine tool 100 to the outside direction of the CNC machine tool 100, namely, the visual detection mechanism 2 is located in the outside directions of the tool and the part at the moment, and therefore shooting detection can be carried out on the outside direction of the tool and the part.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A machine vision cutter of CNC lathe which characterized in that: comprises a translation mechanism (1), a visual detection mechanism (2), a rotating mechanism (3) and a cable retracting mechanism (4); the translation mechanism (1) is used for driving the vision detection mechanism (2) to move left and right and is installed at the top of the CNC machine tool (100), the rotating mechanism (3) which is used for driving the vision detection mechanism (2) to rotate and move is installed on the translation mechanism (1), and the cable retracting mechanism (4) which is used for retracting a connecting wire of the vision detection mechanism (2) is installed in the vision detection mechanism (2).

2. The machine vision tool of a CNC machine of claim 1, characterized in that: translation mechanism (1) includes first motor (11), first bearing (12), lead screw (13), slider (14), mounting panel (15), connecting rod (16), lead screw (13) pass through first bearing (12) movable mounting in the top of CNC lathe (100), first motor (11) fixed mounting in the top of CNC lathe (100), and with lead screw (13) transmission is connected, slider (14) threaded mounting in on lead screw (13), just the top surface of slider (14) with the top sliding connection of CNC lathe (100), connecting rod (16) fixed mounting in the bottom surface of slider (14), mounting panel (15) fixed mounting in the bottom of connecting rod (16).

3. The machine vision tool of a CNC machine of claim 2, characterized in that: visual detection mechanism (2) include arc slat (21), track (22), remove seat (23), camera (24), light (25), a plurality of walking wheel (26), motor (27), walking transmission unit (28), arc slat (21) pass through rotary mechanism (3) with mounting panel (15) transmission is connected, track (22) set up in the medial surface of track arc slat (21), remove seat (23) slidable mounting in track (22), camera (24) with light (25) all install in remove the top surface of seat (23), motor (27) fixed mounting in remove the inside of seat (23), it is a plurality of walking wheel (26) set up in track (22) to symmetry movable mounting in remove the both sides of seat (23) lower extreme, motor (27) pass through walking transmission unit (28) with walking wheel (26) transmission is connected.

4. The machine vision tool of a CNC machine of claim 3, characterized in that: the walking transmission unit (28) comprises a first bevel gear (281), a second bevel gear (282), a first transmission rod (283), a second bearing (284), a third bevel gear (285), a fourth bevel gear (286), a driving shaft (287) and a driven shaft (288), the first bevel gear (281) is fixedly arranged on an output shaft of the motor (27), the driving shaft (287) and the driven shaft (288) are movably arranged at the lower end of the movable seat (23), the walking wheels (26) are arranged at two ends of the driving shaft (287) and the driven shaft (288), the fourth bevel gear (286) is fixedly arranged on the driving shaft (287), the first transmission rod (283) is movably arranged inside the movable seat (23) through the second bearing (284), the second bevel gear (282) is fixedly arranged at the upper end of the first transmission rod (283) and is in meshing transmission connection with the first bevel gear (281), the third bevel gear (285) is fixedly arranged at the lower end of the first transmission rod (283) and is in meshed transmission connection with the fourth bevel gear (286).

5. The machine vision tool of a CNC machine of claim 4, characterized in that: the rotating mechanism (3) comprises a second motor (31), two side plates (32), a first gear (33), an arc-shaped rack (34) and two limiting clamping plates (35), the two side plates (32) are respectively and fixedly arranged on two sides of the bottom surface of the mounting plate (15), the second motor (31) is fixedly arranged on the outer side of one side plate (32), the first gear (33) is movably arranged between the two side plates (32), and is connected with the second motor (31) in a transmission way, the two limit splints (35) are respectively and fixedly arranged at the bottoms of the two side plates (32), the arc-shaped batten (21) is clamped between the two limiting clamping plates (35) in a sliding way, the arc-shaped rack (34) is fixedly arranged on the back surface of the arc-shaped slat (21) and is in meshed transmission connection with the first gear (33).

6. The machine vision tool of a CNC machine of claim 5, characterized in that: the cable winding and unwinding mechanism (4) comprises a wire inlet hole (41), a mounting seat (42), a coil spring box (43), a coil spring (44), a winding roller (45), a rotary joint (46), a wire clamping hole (47), a connecting plate (48) and a roller shaft (49), wherein the winding roller (45) is movably mounted in the moving seat (23) through the mounting seat (42), one end of the winding roller (45) is connected with the coil spring box (43) through the roller shaft (49), the wire inlet hole (41) is formed above the winding roller (45), the wire clamping hole (47) extending to one end of the winding roller (45) is formed in the winding surface of the winding roller (45), one end of the rotary joint (46) is fixedly connected with the center of one end of the winding roller (45) through the winding connecting plate (48), and the other end of the rotary joint (46) is fixedly connected with the inner wall of the moving seat (23), the coil spring box (43) is fixedly installed in the moving seat (23), the coil spring (44) wound on the roller shaft (49) is arranged in the coil spring box (43), one end of the coil spring (44) is fixedly connected with the roller shaft (49), and the other end of the coil spring box is fixedly connected with the inner wall of the coil spring box (43).