CN113075078A - Calibrating device for blade sharpness tester - Google Patents
Calibrating device for blade sharpness tester Download PDFInfo
- Publication number
- CN113075078A CN113075078A CN202110304156.9A CN202110304156A CN113075078A CN 113075078 A CN113075078 A CN 113075078A CN 202110304156 A CN202110304156 A CN 202110304156A CN 113075078 A CN113075078 A CN 113075078A
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- blade
- calibration
- pulley
- pull rope
- rotating speed
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- 238000005096 rolling process Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 7
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention relates to a calibrating device of a blade sharpness tester, which comprises a reversing pulley, a rotating speed measuring pulley, a calibrating pull rope wound around the reversing pulley and the rotating speed measuring pulley, and further comprises a rotating speed measuring sensor for measuring the rotating speed of the rotating speed measuring pulley, wherein the head end of the calibrating pull rope is used for being connected with a blade seat, the tail end of the calibrating pull rope is connected with a pull rope tensioning structure, and the calibrating device of the blade sharpness tester also comprises an angle measuring device for detecting an included angle between the head end of the calibrating pull rope and the moving direction of the blade seat. The invention provides a blade sharpness tester calibrating device capable of calibrating the moving speed of a blade seat of a blade sharpness tester on line.
Description
Technical Field
The invention relates to a calibrating device for a blade sharpness tester in the field of calibration and verification.
Background
The blade sharpness tester is a special instrument for measuring the sharpness of a blade and comprises a tester support, wherein a blade seat and a blade seat driving mechanism for driving the blade seat to move up and down are arranged on the tester support. When sharpness detection is needed to be carried out on the blade, the blade is installed on the blade seat, the blade seat driving mechanism drives the blade to move downwards at a fixed speed through the blade seat, the blade cuts corresponding objects, the objects generate cutting resistance to the blade, and the sharpness of the blade is judged through the resistance of the detection blade.
Correspondingly, the blade sharpness tester comprises a force sensor for detecting the counter force borne by the blade after the blade cuts into an object, and the resistance borne by the blade and the moving speed of the blade are two key technical parameters of the blade sharpness tester. According to corresponding requirements, the moving speed of the blade sharpness tester and the force measuring sensor need to be regularly calibrated to ensure the accuracy of a test result.
Disclosure of Invention
The invention aims to provide a blade sharpness tester calibrating device which can carry out online calibration on the moving speed of a blade seat of a blade sharpness tester.
In order to solve the technical problems, the technical scheme of the invention is as follows:
the utility model provides a blade sharpness tester calibrating device, includes switching-over pulley, rotational speed measurement pulley and the calibration stay cord of winding warp switching-over pulley, rotational speed measurement pulley, and blade sharpness tester calibrating device is still including being used for measuring the rotational speed measurement sensor of rotational speed measurement pulley rotational speed, the head end of calibration stay cord are used for linking to each other with the blade bearing, and the trailing end connection of calibration stay cord has stay cord tensioning texture.
The number of the reversing pulleys is at least three, two of the reversing pulleys are lower side reversing pulleys, one of the reversing pulleys is an upper side reversing pulley positioned at the upper side of the lower side reversing pulley, and the rotating speed measuring pulley is positioned beside the upper side reversing pulley.
The diameter of the rotating speed measuring pulley is smaller than that of the upper reversing pulley, and the contact length of the calibration pull rope and the rotating speed measuring pulley is not smaller than 1/2 of the circumference of the rotating speed measuring pulley.
The pull rope tensioning structure comprises at least one pair of clamping wheels positioned on the upper side of the rotating speed measuring pulley, the calibration pull rope is clamped between the corresponding pair of clamping wheels and is in contact rolling fit with the clamping wheels, and the clamping wheels are connected with clamping wheel floating springs.
The extending direction of the head end of the calibration pull rope is the same as the moving direction of the blade seat, or the extending direction of the head end of the calibration pull rope and the moving direction of the blade seat are obliquely arranged, and the calibrating device of the blade sharpness tester further comprises an angle measuring device for detecting an included angle between the head end of the calibration pull rope and the moving direction of the blade seat.
The head end of the calibration pull rope is provided with a first force measuring sensor in a serial mode, and the blade sharpness tester calibration device further comprises an object support with a second force measuring sensor arranged at the bottom.
The head end of calibration stay cord passes through the connecting seat and links to each other with the blade seat, and the connecting seat includes the fixing base and the connecting rod that links to each other with the fixing base through the axis of rotation, and the head end of calibration stay cord is connected on the connecting rod, and angle measuring device is for being used for detecting axis of rotation turned angle's angle sensor.
The invention has the beneficial effects that: when the moving speed of the blade seat of the blade sharpness tester needs to be calibrated, the head end of the calibration pull rope is connected with the blade seat, the blade seat driving mechanism of the blade sharpness tester drives the blade seat to move, the blade seat drives the calibration pull rope to act, the calibration pull rope winds around the reversing pulley and the rotating speed measuring pulley and drives the reversing pulley and the rotating speed measuring pulley to rotate, the rotating speed measuring sensor measures the rotating speed of the rotating speed measuring pulley, the linear speed of the calibration pull rope is obtained, and the calibration of the moving speed of the blade is realized.
Further, the diameter of the rotating speed measuring pulley is smaller than that of the reversing pulley, so that the contact length of the calibration pull rope and the rotating speed measuring pulley is not less than 1/2 of the circumference of the rotating speed measuring pulley, and the linear speed of the calibration pull rope can be obtained through the rotating speed of the rotating speed measuring pulley.
Further, when the blade is used for cutting an object, the blade seat is subjected to the acting force of the blade seat driving mechanism, the reacting force of the object to the blade seat and the pulling force of the calibration pulling rope to the blade seat are obtained through measurement of the second force cell sensor, the pulling force of the calibration pulling rope is obtained through measurement of the first force cell sensor, the included angle between the head end of the calibration pulling rope and the blade seat is matched, the actual acting force of the blade seat driving mechanism to the blade seat can be obtained through calculation, and therefore the force cell sensor on the blade sharpness tester can be calibrated.
Drawings
FIG. 1 is a state diagram of the use of embodiment 1 of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a state diagram of use of embodiment 2 of the present invention.
Detailed Description
An embodiment of a blade sharpness tester calibration apparatus is shown in FIGS. 1-2: the device comprises a calibration device support, wherein three reversing pulleys and a rotating speed measuring pulley 5 are arranged on the calibration device support, two of the reversing pulleys are lower side position pulleys 7 with lower positions, the other reversing pulley is an upper side reversing pulley 6 with the position being at the upper side of the lower side reversing pulley, and the rotating speed measuring pulley 5 is positioned beside the upper side reversing pulley 6. Blade sharpness tester calibrating device still includes around the calibration stay cord 4 of measuring pulley 5 and switching-over pulley of warp rotational speed, blade sharpness tester calibrating device is still including the rotational speed measuring transducer who is used for measuring 5 rotational speeds of rotational speed measuring pulley, the head end 8 of calibration stay cord is used for linking to each other with the blade holder, the tail end 3 of calibration stay cord is connected with stay cord tension structure, blade sharpness tester calibrating device is still including the angle measuring device who is used for detecting contained angle between the head end 8 of calibration stay cord and the blade holder moving direction. In this embodiment, the moving direction of the blade seat is the up-down direction, so the angle measuring device is used for measuring the included angle between the head end 8 of the calibration pull rope and the up-down direction, and the head end of the calibration pull rope and the included angle between the up-down direction are the included angle between the head end of the calibration pull rope and the vertical side face because the right side face of the blade seat is the vertical side face 18.
In this embodiment, the rotation speed measuring pulley 5 has a smaller diameter than the upper diverting pulley 6, and the contact length of the calibration cord 4 with the rotation speed measuring pulley is not less than 1/2 of the circumference of the rotation speed measuring pulley.
Stay cord straining structure is including being located a pair of centre gripping wheel 2 of rotational speed measurement pulley upside, and the calibration stay cord centre gripping is connected with centre gripping wheel floating spring 1 between this pair of centre gripping wheel and with the contact roll cooperation of centre gripping wheel on the centre gripping wheel, under centre gripping wheel floating spring's effect, two centre gripping wheels have relative motion's trend to guarantee with the contact roll cooperation relation of calibration stay cord.
The head end of the calibration pull rope is provided with a first force measuring sensor 20 in series, and the blade sharpness tester calibration device further comprises an object support 11 provided with a second force measuring sensor at the bottom. The head end of calibration stay cord passes through connecting seat 15 and links to each other with blade seat 10, and connecting seat 15 includes the fixing base and links to each other with the fixing base is articulated connecting rod 17 through axis of rotation 14, and head end 8 of calibration stay cord is connected on connecting rod 17, and angle measuring device is for being used for detecting axis of rotation turned angle's angle sensor 16. In this embodiment, the connecting seat is fixedly connected with the blade seat through magnetic force. The head end of calibration stay cord and the moving direction slope of blade seat arrange, can let out bigger space like this and be used for setting up first force cell sensor, and is less to first force cell sensor's size restriction, and the size of connecting seat also need not set up too big simultaneously.
Item 9 of the drawing shows a load cell between the blade holder drive mechanism and the blade holder in the blade sharpness tester calibration apparatus. When the force sensor and the moving speed of the blade need to be calibrated, the blade 13 is installed on the blade seat 10, the connecting seat 15 of the calibrating device is fixedly connected with the blade seat 10, and before the blade seat moves, the included angle between the calibrating pull rope and the blade seat needs to be measured. Will be arranged in the object support by the cutting object on, blade holder actuating mechanism passes through the blade holder and drives the blade down, the blade holder drives the calibration stay cord and removes, along with moving down of blade holder, the connecting rod can rotate relative to the blade holder, the contained angle between the vertical side of calibration stay cord and blade holder also can change, angle sensor can detect the contained angle change of calibration stay cord and blade holder, thereby obtain the contained angle between calibration stay cord head end and the blade holder, calculate the linear velocity of calibration stay cord through speed sensor, the speed of blade holder direction from top to bottom is converted according to the contained angle between calibration stay cord head end and the blade holder, thereby calibrate blade translation speed to blade sharpness tester calibrating device.
In other embodiments of the invention, the angle measuring device may also be a tilt sensor arranged on the head end of the calibration cable.
An embodiment 2 of a blade sharpness tester calibration apparatus is shown in fig. 3: embodiment 2 is different from embodiment 1 in that the lower side position pulley at the leftmost position is disposed close to the blade holder, so that the extending direction of the head end 8 of the calibration pulling rope is consistent with the moving direction of the blade holder, that is, the extending direction of the head end of the calibration pulling rope is the up-down direction, and thus, no matter force or speed, the calibration pulling rope has no component force vector in other directions. Item 20 in the figure represents a first load cell; item 10 represents an insert holder.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a blade sharpness tester calibrating device which characterized in that: the calibration pull rope comprises a reversing pulley, a rotating speed measuring pulley, a warp winding reversing pulley and a rotating speed measuring pulley, and the calibrating device of the blade sharpness tester is also used for measuring the rotating speed measuring sensor of the rotating speed measuring pulley, the head end of the calibration pull rope is used for being connected with the blade seat, and the tail end of the calibration pull rope is connected with a pull rope tensioning structure.
2. The blade sharpness tester calibration apparatus of claim 1, wherein: the number of the reversing pulleys is at least three, two of the reversing pulleys are lower side reversing pulleys, one of the reversing pulleys is an upper side reversing pulley positioned at the upper side of the lower side reversing pulley, and the rotating speed measuring pulley is positioned beside the upper side reversing pulley.
3. The blade sharpness tester calibration apparatus of claim 2, further comprising: the diameter of the rotating speed measuring pulley is smaller than that of the upper reversing pulley, and the contact length of the calibration pull rope and the rotating speed measuring pulley is not smaller than 1/2 of the circumference of the rotating speed measuring pulley.
4. The blade sharpness tester calibration apparatus of claim 2, further comprising: the pull rope tensioning structure comprises at least one pair of clamping wheels positioned on the upper side of the rotating speed measuring pulley, the calibration pull rope is clamped between the corresponding pair of clamping wheels and is in contact rolling fit with the clamping wheels, and the clamping wheels are connected with clamping wheel floating springs.
5. The blade sharpness tester calibration apparatus of any one of claims 1 to 4, wherein: the extending direction of the head end of the calibration pull rope is the same as the moving direction of the blade seat, or the extending direction of the head end of the calibration pull rope and the moving direction of the blade seat are obliquely arranged, and the calibrating device of the blade sharpness tester further comprises an angle measuring device for detecting an included angle between the head end of the calibration pull rope and the moving direction of the blade seat.
6. The blade sharpness tester calibration apparatus of claim 5, wherein: the head end of the calibration pull rope is provided with a first force measuring sensor in a serial mode, and the blade sharpness tester calibration device further comprises an object support with a second force measuring sensor arranged at the bottom.
7. The blade sharpness tester calibration apparatus of claim 5, wherein: the head end of calibration stay cord passes through the connecting seat and links to each other with the blade seat, and the connecting seat includes the fixing base and the connecting rod that links to each other with the fixing base through the axis of rotation, and the head end of calibration stay cord is connected on the connecting rod, and angle measuring device is for being used for detecting axis of rotation turned angle's angle sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110304156.9A CN113075078B (en) | 2021-03-22 | 2021-03-22 | Blade sharpness tester calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110304156.9A CN113075078B (en) | 2021-03-22 | 2021-03-22 | Blade sharpness tester calibrating device |
Publications (2)
| Publication Number | Publication Date |
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| CN113075078A true CN113075078A (en) | 2021-07-06 |
| CN113075078B CN113075078B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110304156.9A Active CN113075078B (en) | 2021-03-22 | 2021-03-22 | Blade sharpness tester calibrating device |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070209344A1 (en) * | 2006-03-10 | 2007-09-13 | Textron Inc. | Sharpness monitor for indicating turf mower reel blade condition |
| CN101256129A (en) * | 2007-02-28 | 2008-09-03 | 上海恒谊制药设备有限公司 | Tester for tartness degree of tool cutting edge |
| US20100300195A1 (en) * | 2009-05-26 | 2010-12-02 | E. I. Du Pont De Nemours And Company | Apparatus for determining cut resistance |
| DE102011107201A1 (en) * | 2011-07-13 | 2013-01-17 | Rheinische Fachhochschule Köln gGmbH | Arrangement for determining sharpness of e.g. razor blade for cutting e.g. paper, derives sharpness of cutting tool from measured force relationship based on cutting height of test material, and angle of cutting tool |
| CN206459921U (en) * | 2016-12-29 | 2017-09-01 | 崔磊 | A kind of reverser verified for universal testing machine drag load |
| US20180333878A1 (en) * | 2017-05-19 | 2018-11-22 | The Gillette Company Llc | Apparatus for testing razor blades and method for same |
| CN108931223A (en) * | 2018-07-06 | 2018-12-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Tip clearance measurement sensor dynamic calibration system and calibration method |
| CN109596449A (en) * | 2018-11-26 | 2019-04-09 | 钟卿 | A kind of surgical blade sharpness qualification detection device |
| CN211761725U (en) * | 2019-12-23 | 2020-10-27 | 河北新佳达防水材料有限公司 | Waterproof material membrane cutting device |
-
2021
- 2021-03-22 CN CN202110304156.9A patent/CN113075078B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070209344A1 (en) * | 2006-03-10 | 2007-09-13 | Textron Inc. | Sharpness monitor for indicating turf mower reel blade condition |
| CN101256129A (en) * | 2007-02-28 | 2008-09-03 | 上海恒谊制药设备有限公司 | Tester for tartness degree of tool cutting edge |
| US20100300195A1 (en) * | 2009-05-26 | 2010-12-02 | E. I. Du Pont De Nemours And Company | Apparatus for determining cut resistance |
| DE102011107201A1 (en) * | 2011-07-13 | 2013-01-17 | Rheinische Fachhochschule Köln gGmbH | Arrangement for determining sharpness of e.g. razor blade for cutting e.g. paper, derives sharpness of cutting tool from measured force relationship based on cutting height of test material, and angle of cutting tool |
| CN206459921U (en) * | 2016-12-29 | 2017-09-01 | 崔磊 | A kind of reverser verified for universal testing machine drag load |
| US20180333878A1 (en) * | 2017-05-19 | 2018-11-22 | The Gillette Company Llc | Apparatus for testing razor blades and method for same |
| CN108931223A (en) * | 2018-07-06 | 2018-12-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | Tip clearance measurement sensor dynamic calibration system and calibration method |
| CN109596449A (en) * | 2018-11-26 | 2019-04-09 | 钟卿 | A kind of surgical blade sharpness qualification detection device |
| CN211761725U (en) * | 2019-12-23 | 2020-10-27 | 河北新佳达防水材料有限公司 | Waterproof material membrane cutting device |
Non-Patent Citations (2)
| Title |
|---|
| S. SCHULDT等: "Analysis of the sharpness of blades for food cutting", JOURNAL OF FOOD ENGINEERING, vol. 188, no. 2016, pages 13 - 20, XP029629439, DOI: 10.1016/j.jfoodeng.2016.04.022 * |
| 张长林: "丝绒织造机上割绒机构特征与应用", 上海纺织科技, vol. 1990, no. 02, pages 29 - 31 * |
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Address after: No. 10 Baifo Road, Guancheng District, Zhengzhou City, Henan Province, 450000 Applicant after: Henan Institute of Metrology and Testing Science Address before: No.21 Huayuan Road, Jinshui District, Zhengzhou City, Henan Province Applicant before: HENAN PROVINCE INSTITUTE OF METROLOGY |
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