CN109859259A - Vacuum cup liner dimension measuring device and measurement method - Google Patents

Vacuum cup liner dimension measuring device and measurement method Download PDF

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Publication number
CN109859259A
CN109859259A CN201811633608.2A CN201811633608A CN109859259A CN 109859259 A CN109859259 A CN 109859259A CN 201811633608 A CN201811633608 A CN 201811633608A CN 109859259 A CN109859259 A CN 109859259A
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CN
China
Prior art keywords
vacuum cup
cup
liner
cup liner
rim
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Pending
Application number
CN201811633608.2A
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Chinese (zh)
Inventor
庄金雷
王飞阳
高靖
车景国
曹雏清
高云峰
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Wuhu Hit Robot Technology Research Institute Co Ltd
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Wuhu Hit Robot Technology Research Institute Co Ltd
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Priority to CN201811633608.2A priority Critical patent/CN109859259A/en
Publication of CN109859259A publication Critical patent/CN109859259A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a kind of vacuum cup liner dimension measuring devices, the First look device including the rim of a cup image for acquiring vacuum cup liner, the second sighting device of the rim of a cup screw image for acquiring vacuum cup liner, the cup body for acquiring vacuum cup liner and bottom of a cup image third sighting device, with First look device first light source positioned opposite and the second light source positioned opposite with the second sighting device and third sighting device.Vacuum cup liner dimension measuring device of the invention, can non-cpntact measurement vacuum cup liner size, measurement result is accurate and reliable, can greatly improve vacuum cup liner dimensional measurement working efficiency, reduces human cost.

Description

Vacuum cup liner dimension measuring device and measurement method
Technical field
The invention belongs to vacuum cup manufacturing technology fields, specifically, the present invention relates to a kind of vacuum cup liner rulers Very little measuring device and measuring method.
Background technique
The production process of vacuum cup is in the human input stage at present, and the degree of automation is low.
In vacuum cup liner size index measurement, need worker straight to the rim of a cup of vacuum cup liner using vernier caliper The depth of thread of diameter, cup body size and rim of a cup, bottom of a cup measures, compare corresponding parameter index judge it is qualified or not, it is this Measurement method low efficiency, and cost of labor is excessively high, is unfavorable for the lasting profit of enterprise.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of guarantor Warm cup liner dimension measuring device and measurement method, it is therefore an objective to improve vacuum cup liner dimensional measurement working efficiency.
To achieve the goals above, the technical scheme adopted by the invention is as follows: vacuum cup liner dimension measuring device, including with In the First look device of the rim of a cup image of acquisition vacuum cup liner, rim of a cup screw image for acquiring vacuum cup liner the Two sighting devices, the cup body for acquiring vacuum cup liner and bottom of a cup image third sighting device, with First look device phase First light source and the second light source positioned opposite with the second sighting device and third sighting device to arrangement.
The First look device includes first camera and the first camera lens for being set in first camera, the first light source The light directive of sending vacuum cup liner to be measured, vacuum cup liner to be measured be placed on first light source and the first camera lens it Between.
Second sighting device includes second camera and the second camera lens for being set in second camera, the second light source The light directive of sending vacuum cup liner to be measured, vacuum cup liner to be measured be placed on second light source and the second camera lens it Between.
The third sighting device includes third camera and the third camera lens that is set in third camera, the third light source The light directive of sending vacuum cup liner to be measured, vacuum cup liner to be measured be placed on third light source and third camera lens it Between.
The First look device is in the axial direction of vacuum cup liner to be measured, second sighting device and described Third sighting device is on the same straight line parallel with the axial direction of vacuum cup liner to be measured.
The vacuum cup liner dimension measuring device further includes for placing vacuum cup liner and in measurement process The middle pedestal for driving vacuum cup liner to be rotated, the first light source are set on pedestal.
The present invention also provides a kind of vacuum cup inside dimensions measurement methods, are filled using above-mentioned vacuum cup liner dimensional measurement It sets, and comprising steps of
S1, the rim of a cup image that vacuum cup liner is acquired by First look device, carry out the rim of a cup diameter ruler of vacuum cup liner Very little measurement;
S2, the rim of a cup screw image that vacuum cup liner is acquired by the second sighting device, are acquired by third sighting device and are kept the temperature The bottom of a cup screw image of cup liner, carries out the survey of the rim of a cup depth of thread size and bottom of a cup depth of thread size of vacuum cup liner Amount;
S3, the cup body image that vacuum cup liner is acquired by third sighting device, carry out the cup body width of vacuum cup liner Measurement.
The step S1 includes:
The rim of a cup image of S101, First look device acquisition vacuum cup liner;
S102, the image acquired by First look device is pre-processed;
S103, vacuum cup liner rim of a cup diameter is obtained, records the vacuum cup liner rim of a cup diameter of the secondary measurement;
S104, it repeats step S101 to S103 more times, and is averaged as the measurement result of vacuum cup liner rim of a cup diameter.
The step S2 includes:
The rim of a cup screw image of S201, the second sighting device acquisition vacuum cup liner, third sighting device acquire vacuum cup The bottom of a cup screw image of liner;
S202, the image by the second sighting device and the acquisition of third sighting device is pre-processed;
S203, the rim of a cup and the bottom of a cup depth of thread for obtaining vacuum cup liner, record the cup of the vacuum cup liner of the secondary measurement Mouth and the bottom of a cup depth of thread;
S204, it repeats step S201 to S203 more times, and takes the average value of the rim of a cup depth of thread of vacuum cup liner respectively Average value with the bottom of a cup depth of thread is measurement result.
The step S3 includes:
The cup body image of S301, third sighting device acquisition vacuum cup liner;
S302, the image acquired by third sighting device is pre-processed;
S303, vacuum cup liner cup body width is obtained, records the vacuum cup liner cup body width of the secondary measurement;
S304, it repeats step S301 to S303 more times, and is averaged as the measurement result of vacuum cup liner cup body width.
Vacuum cup liner dimension measuring device of the invention, can non-cpntact measurement vacuum cup liner size, measurement result Accurately and reliably, vacuum cup liner dimensional measurement working efficiency can be greatly improved, human cost is reduced.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the structural schematic diagram of vacuum cup liner dimension measuring device of the present invention;
Fig. 2 is rim of a cup diameter measurement flow chart;
Fig. 3 is rim of a cup, bottom of a cup diameter of thread measurement flow chart;
Fig. 4 is screw thread edge data graphs;
Fig. 5 is cup body width measurement flow chart;
In the figure, it is marked as 1, first camera;2, the first camera lens;3, second camera;4, the second camera lens;5, third camera;6, Third camera lens;7, first light source;8, second light source;9, pedestal;10, vacuum cup liner.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution Solution, and facilitate its implementation.
It should be noted that " first ", " second " and " third " does not represent knot in embodiment disclosed below Structure and/or absolute differentiation relationship functionally, do not represent the successive sequence that executes yet, and merely for convenience of description.
As shown in Figure 1, the present invention provides a kind of vacuum cup liner dimension measuring devices, including for acquiring in vacuum cup The First look device of the rim of a cup image of gallbladder, rim of a cup screw image for acquiring vacuum cup liner the second sighting device, use In the cup body of acquisition vacuum cup liner and the third sighting device and First look device the first light positioned opposite of bottom of a cup image Source 7 and the second light source 8 positioned opposite with the second sighting device and third sighting device.
Specifically, as shown in Figure 1, vacuum cup liner is the cylindrical body of the closing of the open at one end, other end and inner hollow, The open end of vacuum cup liner is rim of a cup, and the periphery of rim of a cup is equipped with external screw thread, and the closed end of vacuum cup liner is bottom of a cup, bottom of a cup Periphery also be provided with external screw thread, the position between rim of a cup and bottom of a cup be vacuum cup cup body.After the production of vacuum cup liner, need The measurement of the rim of a cup diameter, cup body width and rim of a cup and the bottom of a cup depth of thread of vacuum cup liner is carried out, only these sizes accord with It closes and requires, vacuum cup liner is just qualified product.
As shown in Figure 1, First look device includes first camera 1 and the first camera lens 2 for being set in first camera 1, the The light directive vacuum cup liner to be measured that one light source 7 issues, vacuum cup liner to be measured are placed on first light source 7 and the Between one camera lens 2.First camera 1 is industrial camera, and the first camera lens 2 is industrial lens, and first light source 7 is used to polishing, the first light The light directive that source 7 issues vacuum cup liner to be measured is conducive to obtain clearly picture, and reduces the difficulty of image procossing Degree.First camera 1 and the first camera lens 2 are the device of Image Acquisition, and imaging is focused on industrial camera by industrial lens Target surface on, to complete Image Acquisition.
As shown in Figure 1, the second sighting device includes second camera 3 and the second camera lens 4 for being set in second camera 3, the The light directive vacuum cup liner to be measured that two light sources 8 issue, vacuum cup liner to be measured are placed on second light source 8 and the Between two camera lenses 4.Second camera 3 is industrial camera, and the second camera lens 4 is industrial lens, and second light source 8 is used to polishing, the second light The light directive that source 8 issues vacuum cup liner to be measured is conducive to obtain clearly picture, and reduces the difficulty of image procossing Degree.Second camera 3 and the second camera lens 4 are the device of Image Acquisition, and imaging is focused on industrial camera by industrial lens Target surface on, to complete Image Acquisition.
As shown in Figure 1, third sighting device includes third camera 5 and the third camera lens 6 that is set in third camera 5, the The light directive that three light sources issue vacuum cup liner to be measured, vacuum cup liner to be measured are placed on third light source and third Between camera lens 6.Third camera 5 is industrial camera, and third camera lens 6 is industrial lens, and third camera 5 and third camera lens 6 are image The device of acquisition is focused on imaging on the target surface of industrial camera by industrial lens, to complete Image Acquisition.
As shown in Figure 1, First look device is in the axial direction of vacuum cup liner to be measured, the second sighting device and Three sighting devices are on the same straight line parallel with the axial direction of vacuum cup liner to be measured, and third sighting device is located at the The lower section of two sighting devices, the height of First look device are greater than the height of the second sighting device, the height of the second sighting device Greater than the height of third sighting device.In measurement process, vacuum cup liner is vertical placement, and First look device is located to be measured The top of the vacuum cup liner of amount, first light source 7 are located at the lower section of vacuum cup liner to be measured, the second sighting device and third Sighting device is located at the side of vacuum cup liner to be measured, and second light source 8 is located at the other side of vacuum cup liner to be measured, The rim of a cup of vacuum cup below First look device face, the external screw thread of the rim of a cup of the second sighting device face vacuum cup liner, the The cup body of three sighting device face vacuum cups, rim of a cup, cup body and the cup of the light directive vacuum cup liner that second light source 8 issues Bottom.By improving the image quality at edge in image backwards to illumination, the precision of subsequent edges extraction algorithm is improved.
Due to there are three measurement contents, so being measured in vision system using three cameras.Rim of a cup is measured from top Diameter, measures the rim of a cup depth of thread from side, measures cup body width and the bottom of a cup depth of thread from side, helps to improve measurement knot The accuracy of fruit.And for the guarantee to screw measurement precision, individual camera is used to the depth of thread of rim of a cup, bottom of a cup Screw thread and the width of cup body use the same camera and third camera 5 is close to the bottom of a cup of vacuum cup liner, and the width of cup body can also To be obtained by the camera of vertical direction.
As shown in Figure 1, vacuum cup liner dimension measuring device of the invention further includes for placing vacuum cup liner and use In the pedestal 9 for driving vacuum cup liner to be rotated in measurement process, first light source 7 is set on pedestal 9.In measurement process In, vacuum cup liner is to be placed on pedestal 9 vertically, and when carrying out Image Acquisition, pedestal 9 drives vacuum cup liner around its axis It is rotated, assistant images acquisition.
The present invention also provides a kind of vacuum cup inside dimensions measurement methods, vacuum cup liner size using the above structure Measuring device, and comprise the following steps that
S1, the rim of a cup image that vacuum cup liner is acquired by First look device, carry out the rim of a cup diameter ruler of vacuum cup liner Very little measurement;
S2, the rim of a cup screw image that vacuum cup liner is acquired by the second sighting device, are acquired by third sighting device and are kept the temperature The bottom of a cup screw image of cup liner, carries out the survey of the rim of a cup depth of thread size and bottom of a cup depth of thread size of vacuum cup liner Amount;
S3, the cup body image that vacuum cup liner is acquired by third sighting device, carry out the cup body width of vacuum cup liner Measurement.
The control of first camera 1, second camera 3 and third camera 5 by host computer, host computer are industrial computer, on Position machine Built-in Image processing software, every dimensional measurement of vacuum cup liner is carried out by machine vision algorithm.In order to protrude quilt The edge for surveying liner facilitates foreground extraction parallel with side placement backwards to lighting source in the bottom of tested liner respectively, and In order to improve measurement accuracy, in such a way that mean value is gone in multiple measurement, rotatable bottom platform is devised.
Above-mentioned steps S1 includes:
The rim of a cup image of S101, First look device acquisition vacuum cup liner;
S102, the image acquired by First look device is pre-processed;
S103, vacuum cup liner rim of a cup diameter is obtained, records the vacuum cup liner rim of a cup diameter of the secondary measurement;
S104, it repeats step S101 to S103 more times, and is averaged as the measurement result of vacuum cup liner rim of a cup diameter.
In above-mentioned steps S1, measurement total degree and pendulous frequency initial value need to be set, taking pendulous frequency initial value is i1, Taking measurement total degree is N1, i1=0.After first camera 1 acquires the rim of a cup image of vacuum cup liner, adopted to by First look device The image of collection is pre-processed, and carries out pretreated process to image are as follows: carry out Threshold segmentation to acquired image first, so Edge extracting is carried out to image afterwards, finally carries out loop truss.
It in above-mentioned steps S104, repeats step S101 to S103 more times, until measurement total degree is greater than N1, finally takes institute The average value for having measurement result is measurement result.Every progress step S101 to S103 is primary, counts once, and in First look Before device carries out the rim of a cup image of acquisition vacuum cup liner next time, need first to drive vacuum cup liner to rotate set angle by pedestal 9 Degree, then First look device is in the acquisition for carrying out vacuum cup liner rim of a cup image.
Whether the average value of measurement result that is last and verifying vacuum cup liner rim of a cup diameter meets the requirements, if conforming to It asks, then display size and green light flashing, if it does not meet the requirements, then display size and blinking red lamp.
Above-mentioned steps S2 includes:
The rim of a cup screw image of S201, the second sighting device acquisition vacuum cup liner, third sighting device acquire vacuum cup The bottom of a cup screw image of liner;
S202, the image by the second sighting device and the acquisition of third sighting device is pre-processed;
S203, the rim of a cup and the bottom of a cup depth of thread for obtaining vacuum cup liner, record the cup of the vacuum cup liner of the secondary measurement Mouth and the bottom of a cup depth of thread;
S204, it repeats step S201 to S203 more times, and takes the average value of the rim of a cup depth of thread of vacuum cup liner respectively Average value with the bottom of a cup depth of thread is measurement result.
In above-mentioned steps S2, measurement total degree and pendulous frequency initial value need to be set, taking pendulous frequency initial value is i2, Taking measurement total degree is N2, i2=0.Second camera 3 acquires the rim of a cup screw image of vacuum cup liner, and the acquisition of third camera 5 is protected The bottom of a cup screw image of warm cup liner pre-processes the image by the second sighting device and the acquisition of third sighting device, right Image carries out pretreated process are as follows: and Threshold segmentation is carried out to acquired image first, edge extracting then is carried out to image, Then edge data is inputted, left and right screw thread is then distinguished, then carries out the conversion of edge data coordinate, is then fitted analysis side Edge data and curves finally obtain screw thread pole coordinate, to calculate the depth of thread.
It in above-mentioned steps S204, repeats step S201 to S203 more times, until measurement total degree is greater than N2, finally takes institute The average value for having measurement result is measurement result.Every progress step S201 to S203 is primary, counts once, and in the second vision Before device and third sighting device carry out the rim of a cup and bottom of a cup screw image of acquisition vacuum cup liner next time, need first by pedestal 9 Vacuum cup liner is driven to rotate set angle, then the second sighting device and third sighting device carry out vacuum cup inner container cup respectively The acquisition of mouth screw thread and bottom of a cup screw image.
Whether the average value of measurement result that is last and verifying vacuum cup liner rim of a cup and the bottom of a cup depth of thread meets the requirements, If meeting the requirements, display size and green light flashing, if it does not meet the requirements, then display size and blinking red lamp.
Above-mentioned steps S3 includes:
The cup body image of S301, third sighting device acquisition vacuum cup liner;
S302, the image acquired by third sighting device is pre-processed;
S303, vacuum cup liner cup body width is obtained, records the vacuum cup liner cup body width of the secondary measurement;
S304, it repeats step S301 to S303 more times, and is averaged as the measurement result of vacuum cup liner cup body width.
In above-mentioned steps S3, measurement total degree and pendulous frequency initial value need to be set, taking pendulous frequency initial value is i3, Taking measurement total degree is N3, i3=0.After third camera 5 acquires the cup body image of vacuum cup liner, adopted to by third sighting device The image of collection is pre-processed, and carries out pretreated process to image are as follows: carry out Threshold segmentation to acquired image first, so Cup body contours extract is carried out to image afterwards, finally carries out contour fitting, calculates cup body width.
It in above-mentioned steps S304, repeats step S301 to S303 more times, until measurement total degree is greater than N3, finally takes institute The average value for having measurement result is measurement result.Every progress step S301 to S303 is primary, counts once, and in third vision Before device carries out the cup body image of acquisition vacuum cup liner next time, need first to drive vacuum cup liner to rotate set angle by pedestal 9 Degree, then third sighting device is in the acquisition for carrying out vacuum cup liner cup body image.
Whether the average value of measurement result that is last and verifying vacuum cup liner cup body width meets the requirements, if conforming to It asks, then display size and green light flashing, if it does not meet the requirements, then display size and blinking red lamp.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out;Or not It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention Within.

Claims (10)

1. vacuum cup liner dimension measuring device, which is characterized in that including the rim of a cup image for acquiring vacuum cup liner One sighting device, the second sighting device of rim of a cup screw image for acquiring vacuum cup liner, for acquiring vacuum cup liner Cup body and bottom of a cup image third sighting device, with First look device first light source positioned opposite and with the second vision Device and third sighting device second light source positioned opposite.
2. vacuum cup liner dimension measuring device according to claim 1, which is characterized in that the First look device packet The first camera lens for including first camera and being set in first camera, the light directive that the first light source issues heat preservation to be measured Cup liner, vacuum cup liner to be measured are placed between first light source and the first camera lens.
3. vacuum cup liner dimension measuring device according to claim 1 or 2, which is characterized in that the second vision dress It sets including second camera and the second camera lens being set in second camera, the light directive that the second light source issues is to be measured Vacuum cup liner, vacuum cup liner to be measured are placed between second light source and the second camera lens.
4. vacuum cup liner dimension measuring device according to any one of claims 1 to 3, which is characterized in that the third view Feel that device includes third camera and the third camera lens that is set in third camera, the light directive that the third light source issues is to be measured The vacuum cup liner of amount, vacuum cup liner to be measured are placed between third light source and third camera lens.
5. vacuum cup liner dimension measuring device according to any one of claims 1 to 4, which is characterized in that first view Feel that device be in the axial direction of vacuum cup liner to be measured, second sighting device and the third sighting device in On the parallel same straight line of the axial direction of vacuum cup liner to be measured.
6. vacuum cup liner dimension measuring device according to any one of claims 1 to 5, which is characterized in that further include being used for Place vacuum cup liner and the pedestal for driving vacuum cup liner to be rotated in measurement process, the first light source setting In on pedestal.
7. vacuum cup inside dimensions measurement method, which is characterized in that using any vacuum cup liner of claim 1 to 7 Dimension measuring device, and comprising steps of
S1, the rim of a cup image that vacuum cup liner is acquired by First look device, carry out the rim of a cup diameter dimension of vacuum cup liner Measurement;
S2, the rim of a cup screw image that vacuum cup liner is acquired by the second sighting device, by third sighting device acquisition vacuum cup The bottom of a cup screw image of gallbladder carries out the measurement of the rim of a cup depth of thread size and bottom of a cup depth of thread size of vacuum cup liner;
S3, the cup body image that vacuum cup liner is acquired by third sighting device, carry out the measurement of the cup body width of vacuum cup liner.
8. vacuum cup inside dimensions measurement method according to claim 7, which is characterized in that the step S1 includes:
The rim of a cup image of S101, First look device acquisition vacuum cup liner;
S102, the image acquired by First look device is pre-processed;
S103, vacuum cup liner rim of a cup diameter is obtained, records the vacuum cup liner rim of a cup diameter of the secondary measurement;
S104, it repeats step S101 to S103 more times, and is averaged as the measurement result of vacuum cup liner rim of a cup diameter.
9. vacuum cup inside dimensions measurement method according to claim 7 or 8, which is characterized in that the step S2 includes:
The rim of a cup screw image of S201, the second sighting device acquisition vacuum cup liner, third sighting device acquire vacuum cup liner Bottom of a cup screw image;
S202, the image by the second sighting device and the acquisition of third sighting device is pre-processed;
S203, obtain vacuum cup liner rim of a cup and the bottom of a cup depth of thread, record the vacuum cup liner of the secondary measurement rim of a cup and The bottom of a cup depth of thread;
S204, it repeats step S201 to S203 more times, and takes the average value and cup of the rim of a cup depth of thread of vacuum cup liner respectively The average value of the bottom depth of thread is measurement result.
10. according to any vacuum cup inside dimensions measurement method of claim 7 to 9, which is characterized in that the step S3 Include:
The cup body image of S301, third sighting device acquisition vacuum cup liner;
S302, the image acquired by third sighting device is pre-processed;
S303, vacuum cup liner cup body width is obtained, records the vacuum cup liner cup body width of the secondary measurement;
S304, it repeats step S301 to S303 more times, and is averaged as the measurement result of vacuum cup liner cup body width.
CN201811633608.2A 2018-12-29 2018-12-29 Vacuum cup liner dimension measuring device and measurement method Pending CN109859259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811633608.2A CN109859259A (en) 2018-12-29 2018-12-29 Vacuum cup liner dimension measuring device and measurement method

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Application Number Priority Date Filing Date Title
CN201811633608.2A CN109859259A (en) 2018-12-29 2018-12-29 Vacuum cup liner dimension measuring device and measurement method

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Publication Number Publication Date
CN109859259A true CN109859259A (en) 2019-06-07

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Application publication date: 20190607