CN204064944U - Based on the standard fasteners pick-up unit of machine vision - Google Patents
Based on the standard fasteners pick-up unit of machine vision Download PDFInfo
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- CN204064944U CN204064944U CN201420403195.XU CN201420403195U CN204064944U CN 204064944 U CN204064944 U CN 204064944U CN 201420403195 U CN201420403195 U CN 201420403195U CN 204064944 U CN204064944 U CN 204064944U
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Abstract
The utility model discloses a kind of standard fasteners pick-up unit based on machine vision, indexing rotary table is provided with in the top of board (5), the top at indexing rotary table edge is provided with a CCD camera (6), arranges the 2nd CCD camera (7) and the 3rd CCD camera (8) on the side of indexing rotary table; Slip-off preventing baffle plate (9) is partly surrounded with in the periphery of described indexing rotary table; The side of indexing rotary table is also provided with the slideway (10) for accepting part, this slideway (10) is fixedly mounted on board (5), is provided with the disengaging yoke (11) for part being allocated to described slideway (10) on the side of slideway (10) entrance point.The utility model takes part picture from different perspectives by three CCD cameras, can be used for detecting various standard fasteners, while preventing standard fasteners from coming off, the part to be checked of different size can be adapted to, have structure simple, compact, volume is little, and cost is low, versatility is good, detection efficiency high.
Description
Technical field
The utility model belongs to pick-up unit technical field, specifically, and particularly a kind of standard fasteners pick-up unit based on machine vision.
Background technology
In recent years, utilizing machine vision technique to carry out in Quality Detection, having done large quantity research abroad, and obtaining many important achievement.Vision-based detection has the advantages such as noncontact, speed is fast, precision is high, antijamming capability is strong, important application prospect is had in modern manufacturing industry, just obtaining applying more and more widely at present in the fields such as machining accuracy detection, workpiece size measurement, Product checking, vision detection technology is solve on-line measurement problem to provide a kind of desirable means.The eighties in 20th century, NBS once did prediction on the basis of investigation: 80% of industrial detection work from now on will be completed by vision detection technology.
Based on standard fasteners, part all has a wide range of applications in many industries of the national economy such as auto industry, machinery manufacturing industry, building industry, electronics industry.Online or the final mass of standard fasteners detects and directly affects the quality of standard fasteners and the control of enterprise cost.For hex bolts, hex bolts is as the most common connection securing member of one, and its manufacturing process is: wire drawing, cold-heading, thread rolling, thermal treatment, zinc-plated or blackout etc.Wire drawing be the diameter control of wire rod steel mill produced by cold-drawn wire drawing to given size, and ensure the smooth of wire surface; Cold-heading is polished rod bolt by mould the wire rod cold-heading molding after wire drawing; Thread rolling is by the screw portion machining screw of automatic flat die thread-rolling machine at polished rod bolt; Thermal treatment eliminates cold working stress by forms such as tempering, ensures intensity and the toughness of bolt; Zinc-plated or blackout is got rusty in order to anti-, strengthens the resistance to corrosion of bolt.Each production link has corresponding detection method, to ensure the correctness of this link.From the angle of quality control, particularly important to the detection of bolt.
For a long time, the detection of hex bolts mainly relies on artificial mode, namely operating personnel measure the physical dimension of bolt every now and then with survey instrument, this manual detection method not only wastes a large amount of time and manpower, and low precision, probability that is undetected, flase drop is also very high, greatly reduces the work efficiency of enterprise and adds the labour cost of enterprise.
Existing indivedual enterprise development goes out vision-based inspection device at present, and wherein, part indexing rotary table is the important component part in this pick-up unit, and part to be checked reaches part indexing rotary table, is divided into certified products and unacceptable product after then being detected by testing agency.Investigate with reality by analysis and find, existing pick-up unit still has following deficiency:
The first, the function that testing agency can detect is less, and accommodation is narrow.Substantially, to detect with or without whether tapping, length enough etc. as thread measurement can only detect, can not double thread pitch, the whether qualified detection of thread form, and accuracy in detection is not high, still has higher faulty materials after detection.
The second, a kind of pick-up unit can only detect a kind of part, and standard fasteners enterprise generally produces various parts, as screw, nut, bolt etc., if all apply automatic detection device, the pick-up unit must buying many covers different detects, and enterprise's Productive statistics increases.
3rd, a kind of standard fasteners part has plurality of specifications, screws as different in nominal diameter, and its size difference is comparatively large, as screws such as M1.4, M4, M8, M10, M12, M20.The detection dish of existing pick-up unit need to part respective production detection dish of each specification, correspondingly when will survey different size part changes detection dish, so just causes the problems such as pick-up unit cost increases, detection efficiency is not high.
4th, existing pick-up unit just detects faulty materials, and detecting qualified part also needs 1-2 name workman to carry out bag distribution packaging, and work efficiency and the labour cost problem of enterprise thoroughly do not solve.
Utility model content
Technical problem to be solved in the utility model is to provide the standard fasteners pick-up unit based on machine vision that a kind of detection efficiency is high, can effectively prevent seized part from coming off.
The technical solution of the utility model is as follows: a kind of standard fasteners pick-up unit based on machine vision, there is board (5), indexing rotary table is provided with in the top of described board (5), this indexing rotary table is by upper stepper motor (12) driven rotary of installing of board (5), a CCD camera (6) is provided with above described indexing rotary table edge, the camera lens of the one CCD camera (6) down, 2nd CCD camera (7) and the 3rd CCD camera (8) are set on the side of indexing rotary table, described 2nd CCD camera (7) is near the 3rd CCD camera (8), the camera lens of the 2nd CCD camera (7) and the 3rd CCD camera (8) is all towards indexing rotary table, slip-off preventing baffle plate (9) is partly surrounded with in the periphery of described indexing rotary table, this slip-off preventing baffle plate (9) is circular arc, and the head and the tail two ends of slip-off preventing baffle plate (9) and the position at close middle part are fixed on board (5) by support, the slideway (10) for accepting part is also provided with on the side of described indexing rotary table, this slideway (10) and the separation of the 2nd CCD camera (7) are in the both sides of indexing rotary table, and slideway (10) is positioned at the downstream of slip-off preventing baffle plate (9) tail end, described slideway (10) entrance point height endpiece low dip is arranged, and be fixedly mounted on board (5), the disengaging yoke (11) for part being allocated to described slideway (10) is provided with on the side of slideway (10) entrance point, this disengaging yoke (11) is positioned at the top of indexing rotary table, one end of disengaging yoke (11) is fixed on board (5) by bearing, the other end of disengaging yoke (11) is obliquely extended to the top at indexing rotary table edge.
Adopt above technical scheme, board is as workbench, and each several part being convenient to pick-up unit is arranged.The slip-off preventing baffle plate of circular arc is partly surrounded with in the periphery of indexing rotary table, in the process that stepper motor drives indexing rotary table to rotate, can effectively prevent seized part from coming off out from the bayonet socket of indexing rotary table, thus ensure that testing process can complete smoothly, the part after detection can normally be carried to subpackage mechanism; The two ends of slip-off preventing baffle plate and being supported by support near the position at middle part, stability and fastness good, slip-off preventing baffle plate can not shake.
In the process that indexing rotary table rotates, the standard fasteners to be checked of locating on it is along the circumferential direction carried, standard fasteners to be checked detects station by vision sensor successively, part picture is taken by three CCD cameras, because these three CCD cameras are arranged in the different azimuth of indexing rotary table, thus can treat zero-detection part to take pictures from different perspectives, thus formed comprehensively, accurately, part picture clearly, then these part pictures are sent to vision-based detection recognition software system to carry out analysis and judge that whether part is qualified, when part rotates to separation station, disengaging yoke plays a part to stop and guide elements, part is separated with indexing rotary table, and part is allocated to slideway from indexing rotary table, because slideway is in tilted layout, enter the part of slideway from its endpiece direction landing of trend, finally carry out categorised collection by mechanism for sorting by whether part is qualified, faulty materials fall in faulty materials case, certified products enter part subpackage mechanism, according to the quantity per unit pack specification set in advance, automatically certified products are packaged, then splitting enters in certified products case.The above course of work is not only simple but also quick, and not only automaticity is high, and effectively improves detection efficiency.
Described indexing rotary table is made up of Moving plate (1) and price fixing (2), the disc structure that Moving plate (1) and price fixing (2) are equal diameters, Moving plate (1) is positioned at directly over price fixing (2), both fit fixing, circumferentially equally distributed first breach (1a) is had in the edge of described Moving plate (1), the first lug (1b) is formed between two adjacent first breach (1a), the edge of price fixing (2) has circumferentially equally distributed second breach (2a), the second lug (2b) is formed between two adjacent second breach (2a), described second breach (2a) and the first breach (1a) one_to_one corresponding, and the second breach (2a) and the first breach (1a) partly overlap, form bayonet socket (3), cushion block (4) is provided with at the top of every block second lug (2b), this cushion block (4) is circumferentially uniformly distributed, described cushion block (4) is arranged in the first breach (1a), and the bayonet socket of adjacent correspondence (3), the end face of cushion block (4) and the either flush of the first lug (1b).
Moving plate and the price fixing moulding of above structure composition indexing rotary table are simple, and processing and fabricating is easy, and cost is low; And Moving plate is combined closely with price fixing, it is firm to connect, and synchronism and the stationarity of running under stepper motor drives are good.The first breach on Moving plate is overlapping with the second barbed portion on price fixing, form bayonet socket, this bayonet socket can be used for locating various standard fasteners, as screw, nut, bolt etc., versatility is good, enterprise adopts a set of pick-up unit can detect various standard fasteners, greatly reduces the equipment investment of enterprise thus.When localization criteria securing member, cushion block and Moving plate first lug common support standard fasteners, due to the end face of cushion block and the either flush of Moving plate first lug, can guarantee that standard fasteners is positioned in corresponding bayonet socket reposefully like this, effectively prevent generation that is crooked or obscission.
In order to simplify structure, be convenient to processing and fabricating, described disengaging yoke (11) is bar shaped block structure.
Conveniently draw materials, reduce costs, guarantee the effect that anti-part comes off, described slip-off preventing baffle plate (9) is made up of transparent organic glass, and slip-off preventing baffle plate (9) distance between each several part with indexing rotary table is equal.
Have a rectangular indentation (9a) in the position of the upper corresponding 2nd CCD camera (7) of described slip-off preventing baffle plate (9) and the 3rd CCD camera (8), this breach (9a) is near the middle part of slip-off preventing baffle plate (9).Above structure enables second, third CCD camera directly take part picture by breach, thus ensure that the sharpness of shooting and the accuracy of testing result.
Can snap in smoothly in the bayonet socket of correspondence in order to ensure part to be checked, and reliably locate in bayonet socket, described bayonet socket (3) from outside to inside width reduces gradually.
In order to ensure the structural strength of Moving plate, the integral middle of described Moving plate (1) end face is formed with up-small and down-big step-like boss.
In order to ensure the structural strength of price fixing, the integral middle of described price fixing (2) bottom surface is formed with up big and down small frustum.
Between described Moving plate (1) with price fixing (2) by two circumferentially equally distributed fastening bolt be connected, the upper hole supplying fastening bolt to pass of Moving plate (1) is circular arc cylindrical void (1c), and the center of circle of this cylindrical void (1c) is on the axial line of Moving plate (1).Be connected firmly between above structure Moving plate and price fixing, reliably, dismounting is not only simple but also convenient.Because the hole that Moving plate passes for fastening bolt is circular arc cylindrical void, in time unclamping fastening bolt, Moving plate can be rotated, to change the size of each bayonet socket, thus adapt to the piece test of various outer diameter size, without the need to changing indexing rotary table during such detection different size part, while saving production cost, substantially increase detection efficiency.
In order to simplify structure, being convenient to processing and fabricating, guaranteeing the fixing be connected between cushion block with price fixing, described cushion block (4) is pane, and is fixed by welding and price fixing (2).
Beneficial effect: the utility model takes part picture from different perspectives by three CCD cameras, can be used for detecting various standard fasteners, while preventing standard fasteners from coming off, the part to be checked of different size can be adapted to, have structure simple, compact, volume is little, and cost is low, versatility is good, detection efficiency high.
Accompanying drawing explanation
Fig. 1 is vertical view of the present utility model.
Fig. 2 is front view of the present utility model.
Fig. 3 is the stereographic map of indexing rotary table.
Fig. 4 is the front view of indexing rotary table.
Fig. 5 is the structural representation of Moving plate.
Fig. 6 is the structural representation of price fixing.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, indexing rotary table is arranged on board 5, is made up of Moving plate 1 and price fixing 2.Described Moving plate 1 and price fixing 2 are the disc structure of equal diameters, and Moving plate 1 is positioned at directly over price fixing 2.The integral middle of described Moving plate 1 end face is formed with up-small and down-big step-like boss, the integral middle of price fixing 2 bottom surface is formed with up big and down small frustum, the bottom surface of Moving plate 1 and the end face of price fixing 2 fit, between Moving plate 1 with price fixing 2 by two circumferentially equally distributed fastening bolt be connected, the hole that Moving plate 1 passes for fastening bolt is circular arc cylindrical void 1c, and the center of circle of this cylindrical void 1c is on the axial line of Moving plate 1.Be provided with stepper motor 12 in the below of described price fixing 2, this stepper motor 12 is installed on the top of board 5.The output shaft of stepper motor 12 straight up, and is connected with the center of price fixing 2 and Moving plate 1, when stepper motor 12 operates time, whole indexing rotary table can be driven to rotate together.
As shown in Fig. 3, Fig. 5, Fig. 6, have circumferentially equally distributed first breach 1a in the edge of Moving plate 1, the number of the first breach 1a is determined according to actual needs, forms the first lug 1b between two adjacent first breach 1a.Circumferentially equally distributed second breach 2a is had in the edge of price fixing 2, the second lug 2b is formed between two adjacent second breach 2a, described second breach 2a and the first breach 1a one_to_one corresponding, and the second breach 2a and the first breach 1a partly overlaps, form bayonet socket 3, this bayonet socket 3 from outside to inside width reduces gradually.Be provided with cushion block 4 at the top of every block second lug 2b, this cushion block 4 is pane, and cushion block 4 is circumferentially uniformly distributed, and is fixed by welding and price fixing 2.Each cushion block 4 is arranged in the first breach 1a, and the bayonet socket 3 of adjacent correspondence, the end face of cushion block 4 and the either flush of the first lug 1b.
As shown in Figure 1 and Figure 2, be partly surrounded with slip-off preventing baffle plate 9 in the periphery of indexing rotary table, this slip-off preventing baffle plate 9 is circular arc, and is preferably made up of transparent organic glass, and slip-off preventing baffle plate 9 each several part is equal with the distance between indexing rotary table.Have a rectangular indentation 9a at described slip-off preventing baffle plate 9 near the position at middle part, the head and the tail two ends of slip-off preventing baffle plate 9 and the position at close middle part are fixed on board 5 by support.
As shown in Figure 1 and Figure 2, above indexing rotary table edge, be provided with the camera lens of CCD camera the 6, an one CCD camera 6 down, and a CCD camera 6 is near the head end of slip-off preventing baffle plate 9.Arrange the 2nd CCD camera 7 and the 3rd CCD camera 8 on the side of indexing rotary table, described 2nd CCD camera 7 is positioned at the position of corresponding breach 9a near the 3rd CCD camera the 8, two CCD camera 7 and the 3rd CCD camera 8.There is between described 2nd CCD camera 7 and the 3rd CCD camera 8 angle of about 30 °, and the camera lens of the 2nd CCD camera 7 and the 3rd CCD camera 8 is all towards indexing rotary table.An above CCD camera 6, the 2nd CCD camera 7 and the 3rd CCD camera 8 are supported on board 5 each via the support of correspondence.
As shown in Figure 1, the slideway 10 for accepting part is also provided with on the side of indexing rotary table, this slideway 10 and the 2nd CCD camera 7 are lived apart in the both sides of indexing rotary table, and slideway 10 is positioned at the downstream of slip-off preventing baffle plate 9 tail end, described slideway 10 entrance point height endpiece low dip is arranged, and be fixedly mounted on board 5, the disengaging yoke 11 for part being allocated to described slideway 10 is provided with on the side of slideway 10 entrance point, this disengaging yoke 11 is positioned at the top of indexing rotary table, and is preferably bar shaped block structure.One end of disengaging yoke 11 is fixed on board 5 by bearing, and the other end of disengaging yoke 11 is obliquely extended to the top at indexing rotary table edge.
Principle of work of the present utility model is as follows:
Stepper motor 12 drives indexing rotary table to rotate, when the vacant bayonet socket 3 on indexing rotary table turns to the position near slip-off preventing baffle plate 9 head end, part to be checked (screw, nut or bolt) enters the bayonet socket 3 on indexing rotary table through delivery track, and part to be checked is by cushion block 4 and the first corresponding lug 1b supporting and location, in the process that indexing rotary table rotates, along the circumferential direction carried by the part to be checked of locating on it, slip-off preventing baffle plate 9 can prevent part to be checked from outwards coming off from bayonet socket 3, part to be checked detects station by vision sensor successively, by a CCD camera 6, 2nd CCD camera 7 and the 3rd CCD camera 8 are from different azimuth shooting part picture, then these part pictures are sent to vision-based detection recognition software system to carry out analysis and judge that whether part is qualified, when part rotates to separation station, disengaging yoke 11 plays a part to stop and guide elements, part is separated with indexing rotary table, and part is allocated to slideway 10 from indexing rotary table, enter the part of slideway 10 from its endpiece direction landing of trend, finally carry out categorised collection by mechanism for sorting by whether part is qualified, faulty materials fall in faulty materials case, certified products enter part subpackage mechanism, according to the quantity per unit pack specification set in advance, automatically certified products are packaged, then splitting enters in certified products case.
Claims (10)
1. the standard fasteners pick-up unit based on machine vision, there is board (5), it is characterized in that: be provided with indexing rotary table in the top of described board (5), this indexing rotary table is by upper stepper motor (12) driven rotary of installing of board (5), a CCD camera (6) is provided with above described indexing rotary table edge, the camera lens of the one CCD camera (6) down, 2nd CCD camera (7) and the 3rd CCD camera (8) are set on the side of indexing rotary table, described 2nd CCD camera (7) is near the 3rd CCD camera (8), the camera lens of the 2nd CCD camera (7) and the 3rd CCD camera (8) is all towards indexing rotary table, slip-off preventing baffle plate (9) is partly surrounded with in the periphery of described indexing rotary table, this slip-off preventing baffle plate (9) is circular arc, and the head and the tail two ends of slip-off preventing baffle plate (9) and the position at close middle part are fixed on board (5) by support, the slideway (10) for accepting part is also provided with on the side of described indexing rotary table, this slideway (10) and the separation of the 2nd CCD camera (7) are in the both sides of indexing rotary table, and slideway (10) is positioned at the downstream of slip-off preventing baffle plate (9) tail end, described slideway (10) entrance point height endpiece low dip is arranged, and be fixedly mounted on board (5), the disengaging yoke (11) for part being allocated to described slideway (10) is provided with on the side of slideway (10) entrance point, this disengaging yoke (11) is positioned at the top of indexing rotary table, one end of disengaging yoke (11) is fixed on board (5) by bearing, the other end of disengaging yoke (11) is obliquely extended to the top at indexing rotary table edge.
2. the standard fasteners pick-up unit based on machine vision according to claim 1, it is characterized in that: described indexing rotary table is made up of Moving plate (1) and price fixing (2), the disc structure that Moving plate (1) and price fixing (2) are equal diameters, Moving plate (1) is positioned at directly over price fixing (2), both fit fixing, circumferentially equally distributed first breach (1a) is had in the edge of described Moving plate (1), the first lug (1b) is formed between two adjacent first breach (1a), the edge of price fixing (2) has circumferentially equally distributed second breach (2a), the second lug (2b) is formed between two adjacent second breach (2a), described second breach (2a) and the first breach (1a) one_to_one corresponding, and the second breach (2a) and the first breach (1a) partly overlap, form bayonet socket (3), cushion block (4) is provided with at the top of every block second lug (2b), this cushion block (4) is circumferentially uniformly distributed, described cushion block (4) is arranged in the first breach (1a), and the bayonet socket of adjacent correspondence (3), the end face of cushion block (4) and the either flush of the first lug (1b).
3. the standard fasteners pick-up unit based on machine vision according to claim 1, is characterized in that: described disengaging yoke (11) is bar shaped block structure.
4. the standard fasteners pick-up unit based on machine vision according to claim 1, it is characterized in that: described slip-off preventing baffle plate (9) is made up of transparent organic glass, and slip-off preventing baffle plate (9) distance between each several part with indexing rotary table is equal.
5. the standard fasteners pick-up unit based on machine vision according to claim 1 or 2 or 3 or 4, it is characterized in that: have a rectangular indentation (9a) in the position of the upper corresponding 2nd CCD camera (7) of described slip-off preventing baffle plate (9) and the 3rd CCD camera (8), this breach (9a) is near the middle part of slip-off preventing baffle plate (9).
6. the standard fasteners pick-up unit based on machine vision according to claim 2, is characterized in that: described bayonet socket (3) from outside to inside width reduces gradually.
7. the standard fasteners pick-up unit based on machine vision according to claim 6, is characterized in that: the integral middle of described Moving plate (1) end face is formed with up-small and down-big step-like boss.
8. the standard fasteners pick-up unit based on machine vision according to claim 7, is characterized in that: the integral middle of described price fixing (2) bottom surface is formed with up big and down small frustum.
9. the standard fasteners pick-up unit based on machine vision according to claim 2, it is characterized in that: between described Moving plate (1) with price fixing (2) by two circumferentially equally distributed fastening bolt be connected, the upper hole supplying fastening bolt to pass of Moving plate (1) is circular arc cylindrical void (1c), and the center of circle of this cylindrical void (1c) is on the axial line of Moving plate (1).
10. the standard fasteners pick-up unit based on machine vision according to claim 2, is characterized in that: described cushion block (4) is pane, and is fixed by welding and price fixing (2).
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| CN201420403195.XU CN204064944U (en) | 2014-07-21 | 2014-07-21 | Based on the standard fasteners pick-up unit of machine vision |
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| CN201420403195.XU CN204064944U (en) | 2014-07-21 | 2014-07-21 | Based on the standard fasteners pick-up unit of machine vision |
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| CN204064944U true CN204064944U (en) | 2014-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142341A (en) * | 2014-07-21 | 2014-11-12 | 重庆颖泉标准件有限公司 | Standard fastener detection device based on machine vision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142341A (en) * | 2014-07-21 | 2014-11-12 | 重庆颖泉标准件有限公司 | Standard fastener detection device based on machine vision |
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Granted publication date: 20141231 Termination date: 20150721 |
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