CN102305599B - Tire section structure surveying instrument and method - Google Patents
Tire section structure surveying instrument and method Download PDFInfo
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- CN102305599B CN102305599B CN 201110130685 CN201110130685A CN102305599B CN 102305599 B CN102305599 B CN 102305599B CN 201110130685 CN201110130685 CN 201110130685 CN 201110130685 A CN201110130685 A CN 201110130685A CN 102305599 B CN102305599 B CN 102305599B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 30
- 238000006243 chemical reaction Methods 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 238000010586 diagram Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 230000000712 assembly Effects 0.000 claims description 16
- 238000000429 assembly Methods 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 12
- 238000013507 mapping Methods 0.000 claims description 10
- 239000012467 final product Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
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- 238000013461 design Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
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- 229910052602 gypsum Inorganic materials 0.000 description 1
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Abstract
The invention discloses a tire section structure surveying instrument and a tire section structure surveying method. The tire section structure surveying instrument comprises a two-dimensional measurement mechanism and an image processing and controlling mechanism, wherein the two-dimensional measurement mechanism comprises a stander, a base, a transparent scanning platform, a tire section clamp and a scanning component; the stander is arranged on the base; the transparent scanning platform is arranged above the stander; the scanning component is arranged below the transparent scanning platform; the tire section clamp is arranged above the transparent scanning platform; and the scanning component is electrically connected with the image processing and controlling mechanism. The surveying method comprises the following steps that: the scanning component shoots a tire section arranged on the transparent scanning platform according to a photographic route; and the image processing and controlling mechanism splices each acquired image and performs computer-aided design (CAD) conversion. The tire section structure surveying instrument is novel equipment in the field of tire measurement and is applicable to tire section detection and section structure data analysis, so that a profile diagram of the tire section, a steel wire distribution diagram and a rubber layer distribution diagram can be acquired accurately; and data is provided for design and detection of the tire section.
Description
Technical field
The present invention relates to the technical field of mapping of tire section structure, particularly a kind of tyre cross section structure mapper and mapping method.
Background technology
At present, in order to measure tire section structure, generally be to predict airtyred shape by finite element analysis, thereby provide reliable basis for the design of tire section structure.Tire section structure mainly comprises tire section profile diagram, material distribution drawing and steel wire distribution plan etc., common way is that tire section is cut down, adopt manual method to measure tire section structure, the tire section profile diagram then be by mould lean against retouch on the tyre contour outline or obtain with gypsum, wherein material distribution drawing and steel wire distribution plan obtain by gage measuring.Traditional this measuring method measuring speed is slow, and measuring accuracy is not high yet, must preserve simultaneously the material object of a large amount of tire sections in the measuring process, and this has just strengthened it and has measured cost.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of measuring speed the very fast and higher tyre cross section structure mapper of measuring accuracy.
Another object of the present invention is to provide a kind of tire section structure mapping method of realizing by above-mentioned surveying instrument, the method is simple to operation, and measuring accuracy is also high.
Technical scheme of the present invention is: a kind of tyre cross section structure mapper, comprise the processing of two-dimensional measurement mechanism and image and control gear, two-dimensional measurement mechanism comprises frame, base, transparent scanning platform, tire section anchor clamps and scan components, frame is fixed on the base, the frame top arranges transparent scanning platform, scan components is located at transparent scanning platform below, and the tire section anchor clamps are located at transparent scanning platform top, and scan components and image are processed and the control gear electrical connection.
Described two-dimensional measurement mechanism also comprises surveying instrument casing and cover, the surveying instrument casing side of being shape structure, it is inner that frame, base, transparent scanning platform, tire section anchor clamps and scan components are located at respectively the surveying instrument casing, and surveying instrument casing top arranges the cover of sealing usefulness.Other building block of two-dimensional measurement mechanism can be sealed in the surveying instrument casing by surveying instrument casing and cover, can prevent effectively that dust etc. is on the impact of measurement result, Effective Raise measuring accuracy.
Described tire section anchor clamps comprise fixed guide locking assembly and two clamp assemblies, two clamp assemblies are located at respectively the two ends of fixed guide locking assembly, each clamp assemblies comprises clamp head, regulating arm and support, the regulating arm two ends arrange respectively clamp head and support, and support is fixedly connected with the fixed guide locking assembly.
Wherein, in described each clamp assemblies, clamp head comprises handle, spring, setting nut cover, regulating shaft and magnet, setting nut cover periphery is connected with regulating arm, spring is located in the setting nut cover and is placed in handle end, and handle end contacts with regulating shaft, and the regulating shaft bottom arranges magnet; Described fixed guide locking assembly comprises adjusting screw(rod), the axis of guide, runner handle and holder, holder comprises base plate and is located at two side plates at base plate two ends, the adjusting screw(rod) two ends are connected with biside plate respectively, adjusting screw(rod) one end also is provided with the runner handle, the axis of guide is located at the adjusting screw(rod) below and two ends are connected with the biside plate of holder respectively, and the base plate of holder is provided with dip stick; In described each clamp assemblies, support comprises bracket base and bearing, and bracket base top is connected with regulating arm, and bracket base is connected with adjusting screw(rod) in the fixed guide locking assembly by bearing, is connected with the axis of guide below the bracket base.
In the tire section anchor clamps, clamp head adopts magnet to hold tire section, can effectively avoid clamp head section to be caused the interference of image; The movement of tire section is also convenient, can realize by the handle of regulating rotary fixed handle and clamp head; Hold the position of adjusting tire section by handle and the turning handle of clamp head in the situation of tire section at magnet, rely on dip stick to measure the rim of the mouth size, it is measured accurately.
Described scan components comprises light source, telecentric lens, the CCD camera, horizontal line slideway, vertical line slideway, horizontal stepper motor and vertical stepper motor, vertically line slideway is fixed on the base, laterally line slideway is located at vertical line slideway top, vertically line slideway arranges with laterally line slideway is vertical, horizontal stepper motor is located at horizontal line slideway one end, vertically stepper motor is located at vertical line slideway one end, the CCD camera is located at horizontal line slideway top, telecentric lens is located at CCD camera top, and light source is located at the telecentric lens top and is shone to transparent scanning platform; CCD camera, horizontal stepper motor and vertical stepper motor are processed with image respectively and the control gear electrical connection.
Described image is processed and control gear comprises computing machine, display and controller, and display is connected with computing machine with controller and is connected, and controller also is connected with CCD camera, horizontal stepper motor and the stepper motor of being connected respectively; Be provided with image processing module, automatic control module and CAD conversion module in the computing machine, the input end of image processing module is connected with the CCD camera, and the output terminal of image processing module is connected with the CAD conversion module, and automatic control module is connected with controller.
The material of described transparent scanning platform is scanner glass.
In the said structure, the size of each building block of two-dimensional measurement mechanism can design according to the actual size of tire section to be measured, especially transparent scanning platform, its size generally can adopt following two kinds of sizes: as the high wide size of tire section≤400 * 500mm, the length and width of transparent scanning platform are of a size of 400 * 500mm; As the high wide size of tire section≤900 * 800mm, the length and width of transparent scanning platform are of a size of 900 * 800mm.
The present invention can realize a kind of tire section structure mapping method by above-mentioned surveying instrument, may further comprise the steps:
(1) opens cover, according to the specification rim size of tire to be measured, adopt the tire section anchor clamps that tire section is clipped, and be positioned on the transparent scanning platform;
(2) cover that closes, open light source, this moment, light source illuminated tire section from the below, and the tire section image images on the CCD camera from telecentric lens, the tire section image setting shooting path that controller obtains according to the CCD camera, and the data in the path of will making a video recording flow to computing machine;
(3) set initial point, the CCD camera is transferred to the initial point place, according to the shooting path, automatic control module in the computing machine drives respectively horizontal stepper motor or vertical stepper motor by controller, make CCD camera, telecentric lens and light source transversely line slideway or vertically line slideway move to each tracing point in each shooting path, then the tire section of corresponding tracing point is taken, and each width of cloth image that will obtain is delivered to computing machine;
(4) image processing module of computing machine splices processing with each width of cloth image that step (3) obtains, form the tire section image of view picture, and flow to the CAD conversion module, after carrying out conversion processing, the CAD conversion module forms CAD formatted output or preservation;
(5) take complete after, close light source, take out tire section and get final product.
In the described step (2), the setting in shooting path is the tire section image that controller obtains according to the CCD camera, by checking the pixel grey scale at tire section edge, thereby determines the tire section profile and determines the shooting path according to the tire section profile.
In the described step (3), automatic control module to the control procedure of CCD camera is: detect first the CCD camera and whether be in origin position, if do not exist, then the CCD camera is transferred to the initial point place; If the CCD camera has been positioned at the initial point place, then from initial point, the CCD camera is taken according to the shooting path of having set, until it is complete or manually stop to take to take the shooting in path midway.
In the described step (4), image processing module to the detailed process that each width of cloth image splices processing is: each width of cloth Image Mosaics that first step (3) is obtained is overall profile figure, then consider ripple, determine tire section and background characteristics according to gray threshold, isolate the profile diagram of tire section, carry out again binaryzation, carry out at last match, obtain the tire section image of view picture and flow to the CAD conversion module.
The course of work of CAD conversion module is specially: judge first during conversion that each line segment that forms the tire section image is straight-line segment or arc section, if straight-line segment then gets final product according to the function call of straight-line segment, if arc section then carries out in the following order:
1) take the center of circle of arc section as true origin, adopt the decimal system to determine the radius of arc section, the radius angle of arc section starting point and the radius angle of arc section terminating point;
2) according to the central coordinate of circle value, arc section radius, the radius angle of arc section starting point and the radius angle of arc section terminating point that obtain, arc section is carried out CAD transform.
The present invention has following beneficial effect with respect to prior art:
This tyre cross section structure mapper is the new equipment of tire fields of measurement, the tire section that this equipment is applicable to tire design, research and manufacturing enterprise etc. detects and the section structure data analysis, can obtain more exactly profile diagram, steel wire distribution plan and the glue-line distribution plan of tire section by this surveying instrument, for tire section designs and detection provides data.
In this tyre cross section structure mapper CCD camera, telecentric lens and light source are become one, and adopt surveying instrument casing and cover to seal, can prevent effectively that the impurity such as dust is on the impact of measuring process, so that mapping precision is higher.
Description of drawings
Fig. 1 is the structural representation of this tyre cross section structure mapper.
Fig. 2 is the structural representation of tire section anchor clamps in this tyre cross section structure mapper.
Fig. 3 is the structural representation of single clamp assemblies on the A direction among Fig. 2.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
A kind of tyre cross section structure mapper of present embodiment, its structure as shown in Figure 1, comprise the processing of two-dimensional measurement mechanism and image and control gear, two-dimensional measurement mechanism comprises frame 1, base 2, transparent scanning platform 3, tire section anchor clamps 4 and scan components, frame 1 is fixed on the base 2, frame 1 top arranges transparent scanning platform 3, scan components is located at transparent scanning platform 3 belows, tire section anchor clamps 4 are located at transparent scanning platform 3 tops, and scan components and image are processed and the control gear electrical connection.
Two-dimensional measurement mechanism also comprises surveying instrument casing 5 and cover 6, surveying instrument casing 5 side's of being shape structures, frame 1, base 2, transparent scanning platform 3, tire section anchor clamps 4 and scan components are located at respectively surveying instrument casing 5 inside, and surveying instrument casing 5 tops arrange the cover 6 of sealing usefulness.Other building block of two-dimensional measurement mechanism can be sealed in the surveying instrument casing 5 by surveying instrument casing 5 and cover 6, can prevent effectively that dust etc. is on the impact of measurement result, Effective Raise measuring accuracy.
As shown in Figure 2, the tire section anchor clamps comprise fixed guide locking assembly and two clamp assemblies, two clamp assemblies are located at respectively the two ends of fixed guide locking assembly, as shown in Figure 3, each clamp assemblies comprises clamp head, regulating arm 7 and support, regulating arm 7 two ends arrange respectively clamp head and support, and support is fixedly connected with the fixed guide locking assembly.
Wherein, in each clamp assemblies, clamp head comprises handle 8, spring 9, setting nut cover 10, regulating shaft 11 and magnet 12, setting nut overlaps 10 peripheries and is connected with regulating arm 7, spring 9 is located in the setting nut cover 10 and is placed in handle 8 ends, handle 8 ends contact with regulating shaft 11, and regulating shaft 11 bottoms arrange magnet 12; The fixed guide locking assembly comprises adjusting screw(rod) 13, the axis of guide 14, runner handle 15 and holder 16, holder 16 comprises base plate 17 and is located at two side plates 18 at base plate two ends, adjusting screw(rod) 13 two ends are connected with biside plate 18 respectively, adjusting screw(rod) 13 1 ends also are provided with runner handle 15, the axis of guide 14 is located at adjusting screw(rod) 13 belows and two ends are connected with the biside plate 18 of holder respectively, and the base plate 17 of holder is provided with dip stick 32; In each clamp assemblies, support comprises bracket base 19 and bearing 20, and bracket base 19 tops are connected with regulating arm 7, and bracket base 19 is connected with adjusting screw(rod) 13 in the fixed guide locking assembly by bearing 20, and bracket base 19 belows are connected with the axis of guide 14.
In the tire section anchor clamps, clamp head adopts magnet 12 to hold tire section, can effectively avoid clamp head section to be caused the interference of image; The movement of tire section is also convenient, can realize by the handle 8 of regulating rotary fixed handle 15 and clamp head; Hold the position of adjusting tire section by handle and the turning handle of clamp head in the situation of tire section at magnet, rely on dip stick 32 to measure the rim of the mouth size, it is measured accurately.
As shown in Figure 1, scan components comprises light source 21, telecentric lens 22, CCD camera 23, horizontal line slideway 24, vertical line slideway 25, horizontal stepper motor 26 and vertical stepper motor 27, vertically line slideway 25 is fixed on the base 2, laterally line slideway 24 is located at vertical line slideway 25 tops, vertically line slideway 25 and horizontal line slideway 24 vertical settings, horizontal stepper motor 26 is located at horizontal line slideway 24 1 ends, vertically stepper motor 27 is located at vertical line slideway 27 1 ends, CCD camera 23 is located at horizontal line slideway 24 tops, telecentric lens 22 is located at CCD camera 23 tops, and light source 21 is located at telecentric lens 22 tops and is shone to transparent scanning platform 3; CCD camera 23, horizontal stepper motor 26 and vertical stepper motor 27 are processed with image respectively and the control gear electrical connection.
Image is processed and control gear comprises computing machine 28, display 29 and controller 30, and display 29 is connected with controller and is connected with computing machine 28 respectively, and controller 30 also is connected with CCD camera 23, horizontal stepper motor 26 and the stepper motor of being connected 27 respectively; Be provided with image processing module, automatic control module and CAD conversion module in the computing machine 28, the input end of image processing module is connected with the CCD camera, and the output terminal of image processing module is connected with the CAD conversion module, and automatic control module is connected with controller.
The material of transparent scanning platform 3 is scanner glass.
In the said structure, the size of each building block of two-dimensional measurement mechanism can design according to the actual size of tire section to be measured, especially transparent scanning platform 3, its size generally can adopt following two kinds of sizes: as the high wide size of tire section≤400 * 500mm, the length and width of transparent scanning platform are of a size of 400 * 500mm; As the high wide size of tire section≤900 * 800mm, the length and width of transparent scanning platform are of a size of 900 * 800mm.
Present embodiment can be realized a kind of tire section structure mapping method by above-mentioned surveying instrument, may further comprise the steps:
(1) opens cover 6, according to the specification rim size of tire to be measured, adopt the tire section anchor clamps that tire section 31 is clipped, and be positioned on the transparent scanning platform 3;
(2) cover 6 that closes, open light source 21, this moment, light source 21 illuminated tire section 31 from the below, the tire section image images on the CCD camera 23 from telecentric lens 22, the tire section image setting shooting path that controller 30 obtains according to CCD camera 23, and the data in the path of will making a video recording flow to computing machine 28;
(3) set initial point, CCD camera 23 is transferred to the initial point place, according to the shooting path, automatic control module in the computing machine drives respectively horizontal stepper motor 26 or vertical stepper motor 27 by controller 30, make CCD camera 23, telecentric lens 22 and light source 21 transversely line slideway 24 or vertically line slideway 25 move to each tracing point in each shooting path, then the tire section of corresponding tracing point is taken, and each width of cloth image that will obtain is delivered to computing machine;
(4) image processing module of computing machine splices processing with each width of cloth image that step (3) obtains, form the tire section image of view picture, and flow to the CAD conversion module, after carrying out conversion processing, the CAD conversion module forms CAD formatted output or preservation;
(5) take complete after, close light source 21, take out tire section 31 and get final product.
In the described step (2), the setting in shooting path is the tire section image that controller obtains according to the CCD camera, by checking the pixel grey scale at tire section edge, thereby determines the tire section profile and determines the shooting path according to the tire section profile.
In the described step (3), automatic control module to the control procedure of CCD camera is: detect first the CCD camera and whether be in origin position, if do not exist, then the CCD camera is transferred to the initial point place; If the CCD camera has been positioned at the initial point place, then from initial point, the CCD camera is taken according to the shooting path of having set, until it is complete or manually stop to take to take the shooting in path midway.
In the described step (4), image processing module to the detailed process that each width of cloth image splices processing is: each width of cloth Image Mosaics that first step (3) is obtained is overall profile figure, then consider ripple, determine tire section and background characteristics according to gray threshold, isolate the profile diagram of tire section, carry out again binaryzation, carry out at last match, obtain the tire section image of view picture and flow to the CAD conversion module.
The course of work of CAD conversion module is specially: judge first during conversion that each line segment that forms the tire section image is straight-line segment or arc section, if straight-line segment then gets final product according to the function call of straight-line segment, if arc section then carries out in the following order:
1) take the center of circle of arc section as true origin, adopt the decimal system to determine the radius of arc section, the radius angle of arc section starting point and the radius angle of arc section terminating point;
2) according to the central coordinate of circle value, arc section radius, the radius angle of arc section starting point and the radius angle of arc section terminating point that obtain, arc section is carried out CAD transform.
As mentioned above, just can realize preferably the present invention, above-described embodiment is preferred embodiment of the present invention only, is not to limit practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.
Claims (9)
1. tyre cross section structure mapper, it is characterized in that, comprise the processing of two-dimensional measurement mechanism and image and control gear, two-dimensional measurement mechanism comprises frame, base, transparent scanning platform, tire section anchor clamps and scan components, frame is fixed on the base, and the frame top arranges transparent scanning platform, and scan components is located at transparent scanning platform below, the tire section anchor clamps are located at transparent scanning platform top, and scan components and image are processed and the control gear electrical connection;
Described tire section anchor clamps comprise fixed guide locking assembly and two clamp assemblies, two clamp assemblies are located at respectively the two ends of fixed guide locking assembly, each clamp assemblies comprises clamp head, regulating arm and support, the regulating arm two ends arrange respectively clamp head and support, and support is fixedly connected with the fixed guide locking assembly.
2. tyre cross section structure mapper according to claim 1, it is characterized in that, described two-dimensional measurement mechanism also comprises surveying instrument casing and cover, the surveying instrument casing side of being shape structure, it is inner that frame, base, transparent scanning platform, tire section anchor clamps and scan components are located at respectively the surveying instrument casing, and surveying instrument casing top arranges the cover of sealing usefulness.
3. tyre cross section structure mapper according to claim 1, it is characterized in that, in described each clamp assemblies, clamp head comprises handle, spring, setting nut cover, regulating shaft and magnet, setting nut cover periphery is connected with regulating arm, spring is located in the setting nut cover and is placed in handle end, and handle end contacts with regulating shaft, and the regulating shaft bottom arranges magnet; Described fixed guide locking assembly comprises adjusting screw(rod), the axis of guide, runner handle and holder, holder comprises base plate and is located at two side plates at base plate two ends, the adjusting screw(rod) two ends are connected with biside plate respectively, adjusting screw(rod) one end also is provided with the runner handle, the axis of guide is located at the adjusting screw(rod) below and two ends are connected with the biside plate of holder respectively, and the base plate of holder is provided with dip stick; In described each clamp assemblies, support comprises bracket base and bearing, and bracket base top is connected with regulating arm, and bracket base is connected with adjusting screw(rod) in the fixed guide locking assembly by bearing, is connected with the axis of guide below the bracket base.
4. tyre cross section structure mapper according to claim 1, it is characterized in that, described scan components comprises light source, telecentric lens, the CCD camera, horizontal line slideway, vertical line slideway, horizontal stepper motor and vertical stepper motor, vertically line slideway is fixed on the base, laterally line slideway is located at vertical line slideway top, vertically line slideway arranges with laterally line slideway is vertical, horizontal stepper motor is located at horizontal line slideway one end, vertically stepper motor is located at vertical line slideway one end, the CCD camera is located at horizontal line slideway top, telecentric lens is located at CCD camera top, and light source is located at the telecentric lens top and is shone to transparent scanning platform; CCD camera, horizontal stepper motor and vertical stepper motor are processed with image respectively and the control gear electrical connection.
5. tyre cross section structure mapper according to claim 4, it is characterized in that, described image is processed and control gear comprises computing machine, display and controller, display is connected with computing machine with controller and is connected, and controller also is connected with CCD camera, horizontal stepper motor and the stepper motor of being connected respectively; Be provided with image processing module, automatic control module and CAD conversion module in the computing machine, the input end of image processing module is connected with the CCD camera, and the output terminal of image processing module is connected with the CAD conversion module, and automatic control module is connected with controller.
6. tyre cross section structure mapper according to claim 1 is characterized in that, the material of described transparent scanning platform is scanner glass.
7. each described surveying instrument is realized a kind of tire section structure mapping method according to claim 1～6, it is characterized in that, may further comprise the steps:
(1) opens cover, according to the specification rim size of tire to be measured, adopt the tire section anchor clamps that tire section is clipped, and be positioned on the transparent scanning platform;
(2) cover that closes, open light source, this moment, light source illuminated tire section from the below, and the tire section image images on the CCD camera from telecentric lens, the tire section image setting shooting path that controller obtains according to the CCD camera, and the data in the path of will making a video recording flow to computing machine;
(3) set initial point, the CCD camera is transferred to the initial point place, according to the shooting path, automatic control module in the computing machine drives respectively horizontal stepper motor or vertical stepper motor by controller, make CCD camera, telecentric lens and light source transversely line slideway or vertically line slideway move to each tracing point in each shooting path, then the tire section of corresponding tracing point is taken, and each width of cloth image that will obtain is delivered to computing machine;
(4) image processing module of computing machine splices processing with each width of cloth image that step (3) obtains, and forms the tire section image of view picture, and flows to the CAD conversion module, forms CAD formatted output or preservation after the CAD conversion module carries out conversion processing;
(5) take complete after, close light source, take out tire section and get final product.
8. tire section structure mapping method according to claim 7, it is characterized in that, in the described step (2), the setting in shooting path is the tire section image that controller obtains according to the CCD camera, by checking the pixel grey scale at tire section edge, thereby determine the tire section profile and determine the shooting path according to the tire section profile.
9. tire section structure mapping method according to claim 7, it is characterized in that in the described step (3), automatic control module to the control procedure of CCD camera is: detect first the CCD camera and whether be in origin position, if do not exist, then the CCD camera is transferred to the initial point place; If the CCD camera has been positioned at the initial point place, then from initial point, the CCD camera is taken according to the shooting path of having set, until it is complete or manually stop to take to take the shooting in path midway;
In the step (4), image processing module to the detailed process that each width of cloth image splices processing is: each width of cloth Image Mosaics that first step (3) is obtained is overall profile figure, then consider ripple, determine tire section and background characteristics according to gray threshold, isolate the profile diagram of tire section, carry out again binaryzation, carry out at last match, obtain the tire section image of view picture and flow to the CAD conversion module;
The course of work of CAD conversion module is: judge first during conversion that each line segment that forms the tire section image is straight-line segment or arc section, if straight-line segment then gets final product according to the function call of straight-line segment, if arc section then carries out in the following order:
1) take the center of circle of arc section as true origin, adopt the decimal system to determine the radius of arc section, the radius angle of arc section starting point and the radius angle of arc section terminating point;
2) according to the central coordinate of circle value, arc section radius, the radius angle of arc section starting point and the radius angle of arc section terminating point that obtain, arc section is carried out CAD transform.
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| CN 201110130685 CN102305599B (en) | 2011-05-19 | 2011-05-19 | Tire section structure surveying instrument and method |
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| CN 201110130685 CN102305599B (en) | 2011-05-19 | 2011-05-19 | Tire section structure surveying instrument and method |
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| US5174151A (en) * | 1990-08-24 | 1992-12-29 | The Yokohama Rubber Co., Ltd. | Apparatus for measuring ground-contacting portion of tire tread |
| CN102016499A (en) * | 2008-05-01 | 2011-04-13 | 株式会社普利司通 | Device and method for measuring object to be measured having hollow circular cylindrical shape, and device for inspecting external appearance of tire |
| CN202074951U (en) * | 2011-05-19 | 2011-12-14 | 广州华工百川科技股份有限公司 | Tyre cross section structure mapper |
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| JPH0783630A (en) * | 1993-06-30 | 1995-03-28 | Bridgestone Corp | Measurement method of cross section of tread of tire |
| JPH07174528A (en) * | 1993-12-20 | 1995-07-14 | Yokohama Rubber Co Ltd:The | Measurement method for cross sectional shape of tire |
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| US5174151A (en) * | 1990-08-24 | 1992-12-29 | The Yokohama Rubber Co., Ltd. | Apparatus for measuring ground-contacting portion of tire tread |
| CN102016499A (en) * | 2008-05-01 | 2011-04-13 | 株式会社普利司通 | Device and method for measuring object to be measured having hollow circular cylindrical shape, and device for inspecting external appearance of tire |
| CN202074951U (en) * | 2011-05-19 | 2011-12-14 | 广州华工百川科技股份有限公司 | Tyre cross section structure mapper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017139541A1 (en) * | 2016-02-12 | 2017-08-17 | Bartell Machinery Systems, L.L.C. | Bead measurement system |
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| CN102305599A (en) | 2012-01-04 |
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