CN113075078B - Blade sharpness tester calibrating device - Google Patents
Blade sharpness tester calibrating device Download PDFInfo
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- CN113075078B CN113075078B CN202110304156.9A CN202110304156A CN113075078B CN 113075078 B CN113075078 B CN 113075078B CN 202110304156 A CN202110304156 A CN 202110304156A CN 113075078 B CN113075078 B CN 113075078B
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- pulley
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- 238000005259 measurement Methods 0.000 claims description 17
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 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
- 238000012795 verification Methods 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Of Balance (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a blade sharpness tester calibration device which comprises a reversing pulley, a rotating speed measuring pulley, a calibration pull rope which passes through the reversing pulley and the rotating speed measuring pulley, a rotating speed measuring sensor for measuring the rotating speed of the rotating speed measuring pulley, a blade seat and a blade seat, wherein the head end of the calibration pull rope is connected with the blade seat, the tail end of the calibration pull rope is connected with a pull rope tensioning structure, and the blade sharpness tester calibration device 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 invention provides a blade sharpness tester calibration 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 blade sharpness tester calibration device in the field of calibration verification.
Background
The blade sharpness tester is a special tool for measuring the sharpness of a blade and comprises a tester bracket, 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 bracket. When the sharpness detection is required 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 a corresponding object, the object generates cutting resistance to the blade, and the sharpness of the blade is judged by detecting the blocking force of the blade.
Correspondingly, the blade sharpness tester comprises a force transducer for detecting the counter force applied to the blade after the blade cuts into an object, and the resistance applied to 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 transducer are required to be calibrated regularly so as to ensure the accuracy of test results, and in the prior art, the moving speed of the blade is very low, so that the moving speed of the blade is difficult to calibrate directly on line, and the on-line calibration of the force transducer is difficult to realize.
Disclosure of Invention
The invention aims to provide a blade sharpness tester calibration device capable of calibrating the moving speed of a blade seat of a blade sharpness tester on line.
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 switching-over pulley, rotational speed measurement pulley, and blade sharpness tester calibrating device is still including being used for measuring rotational speed measurement sensor of rotational speed measurement pulley rotational speed, the head end of calibration stay cord is used for linking to each other with the blade seat, and the tail end of calibration stay cord is connected with stay cord tensioning structure.
The reversing pulleys are at least three, two reversing pulleys are lower reversing pulleys, one reversing pulley is an upper reversing pulley positioned on the upper side of the lower reversing pulley, and the rotating speed measuring pulley is positioned beside the upper 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 calibrating stay rope and the rotating speed measuring pulley is not smaller than 1/2 of the circumference of the rotating speed measuring pulley.
The stay cord tensioning structure is including being located at least a pair of grip pulley of rotational speed measurement pulley upside, and the alignment stay cord centre gripping is in corresponding between a pair of grip pulley and with grip pulley contact rolling fit, is connected with the grip pulley floating spring on the grip pulley.
The head end extending direction of the calibration pull rope is the same as the moving direction of the blade seat, or the head end extending direction of the calibration pull rope is obliquely arranged with the moving direction of the blade seat, and the blade sharpness tester calibration device 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 first force transducer is arranged at the head end of the calibration pull rope in series, and the blade sharpness tester calibration device further comprises an object support with a second force transducer arranged at the bottom.
The head end of the calibration stay cord is connected with the blade seat through the connecting seat, the connecting seat comprises a fixed seat and a connecting rod connected with the fixed seat through a rotating shaft, the head end of the calibration stay cord is connected onto the connecting rod, and the angle measuring device is an angle sensor for detecting the rotating angle of the rotating shaft.
The beneficial effects of the invention are as follows: when the moving speed of the blade seat of the blade sharpness tester needs to be calibrated, the head end of the calibrating 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 calibrating pull rope to act, the calibrating pull rope winds the reversing pulley and the rotating speed measuring pulley and rotates with the reversing pulley and the rotating speed measuring pulley, and the rotating speed measuring sensor obtains the linear speed of the calibrating pull rope by measuring the rotating speed of the rotating speed measuring pulley, so that the moving speed of the blade is calibrated.
Further, the diameter of the rotation speed measuring pulley is smaller than that of the reversing pulley, so that the contact length of the calibration pull rope and the rotation speed measuring pulley is more easily realized, and the contact length is not smaller than 1/2 of the circumference of the rotation speed measuring pulley, so that the linear speed of the calibration pull rope can be obtained through the rotation speed of the rotation speed measuring pulley.
Further, when the blade is used for cutting an object, the blade 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 pull rope to the blade seat are measured through the second force sensor, the pulling force of the calibration pull rope is measured through the first force sensor, and the included angle between the head end of the calibration pull rope and the blade seat is matched, so that the acting force of the blade seat driving mechanism to the blade seat can be calculated, and the force sensor on the blade sharpness tester can be calibrated.
Drawings
FIG. 1 is a use state diagram of embodiment 1 of the present invention;
fig. 2 is an enlarged view at a in fig. 1;
fig. 3 is a use state diagram of embodiment 2 of the present invention.
Detailed Description
An embodiment of a blade sharpness tester calibration apparatus is shown in fig. 1-2: the device comprises a calibrating device support, wherein three reversing pulleys and a rotating speed measuring pulley 5 are arranged on the calibrating device support, two reversing pulleys are lower-side position pulleys 7 positioned at lower positions, the other reversing pulley is an upper-side reversing pulley 6 positioned 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. The blade sharpness tester calibrating device still includes the calibration stay cord 4 of winding rotational speed measurement pulley 5 and switching-over pulley, and blade sharpness tester calibrating device still is used for measuring the rotational speed measurement sensor of rotational speed measurement pulley 5 rotational speed, and the head end 8 of calibration stay cord is used for linking to each other with the blade seat, and the tail end 3 of calibration stay cord is connected with stay cord tensioning structure, and blade sharpness tester calibrating device still is including the angle measurement device that is used for detecting the head end 8 of calibration stay cord and blade seat direction of movement between the contained angle. 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 right side surface of the blade seat is the vertical side surface 18, so the included angle between the head end of the calibration pull rope and the up-down direction is the included angle between the head end of the calibration pull rope and the vertical side surface.
In this embodiment, the diameter of the rotation speed measuring pulley 5 is smaller than that of the upper reversing pulley 6, and the contact length of the calibration pull rope 4 and the rotation speed measuring pulley is not smaller than 1/2 of the circumference of the rotation speed measuring pulley.
The stay cord tensioning structure is including being located a pair of grip pulley 2 of rotational speed measurement pulley upside, and the calibration stay cord centre gripping is between a pair of grip pulley and with grip pulley contact rolling fit, is connected with grip pulley floating spring 1 on the grip pulley, under the effect of grip pulley floating spring, two grip pulleys have the trend of relative motion to guarantee the contact rolling fit relation with the calibration stay cord.
The first force transducer 20 is connected in series with the head end of the calibration pull rope, and the blade sharpness tester calibration device further comprises an object support 11 with a second force transducer arranged at the bottom. The head end of the calibration stay cord is connected with the blade seat 10 through the connecting seat 15, the connecting seat 15 comprises a fixed seat and a connecting rod 17 connected with the fixed seat in a hinged mode through a rotating shaft 14, the head end 8 of the calibration stay cord is connected to the connecting rod 17, and the angle measuring device is an angle sensor 16 used for detecting the rotating angle of the rotating shaft. In this embodiment, the connection base is fixedly connected to the blade base by magnetic force. The head end of calibration stay cord and the direction of movement slope of blade seat are arranged, can let more space be used for setting up first force transducer like this, and the size restriction to first force transducer is less, 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 arrangement. When the load cell and the moving speed of the blade are required 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 is required to be measured. The object to be cut is placed on the object support, the blade seat driving mechanism drives the blade to move downwards through the blade seat, the blade seat drives the calibration pull rope to move downwards along with the downward movement of the blade seat, the connecting rod rotates relative to the blade seat, the included angle between the calibration pull rope and the vertical side surface of the blade seat can also change, the included angle between the calibration pull rope and the blade seat can be detected by the angle sensor, so that the included angle between the head end of the calibration pull rope and the blade seat is obtained, the linear speed of the calibration pull rope is calculated through the rotating speed sensor, the speed of the blade seat in the up-down direction is converted according to the included angle between the head end of the calibration pull rope and the blade seat, and the moving speed of the blade of the calibration device of the blade sharpness tester is calibrated.
In other embodiments of the invention, the angle measuring device may also be a tilt sensor disposed on the head end of the calibration pull cord.
Example 2 of a blade sharpness tester calibration apparatus is shown in fig. 3: embodiment 2 differs from embodiment 1 in that the lower position pulley at the leftmost position is arranged close to the blade seat, so that the extending direction of the head end 8 of the calibration pull rope is consistent with the moving direction of the blade seat, i.e. the extending direction of the head end of the calibration pull rope is up and down, so that no component force vector exists in other directions of the calibration pull rope no matter the force or the speed, and in this scheme, an angle measuring device for measuring the included angle of the head end of the calibration pull rope relative to the moving direction of the blade seat is not required to be arranged. Item 20 in the figure represents a first load cell; item 10 represents an insert holder.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the 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 scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. A blade sharpness tester calibrating device, characterized in that: including reversing pulley, rotational speed measurement pulley and the calibration stay cord of winding reversing pulley, rotational speed measurement pulley, blade sharpness tester calibrating device still including being used for measuring rotational speed measurement pulley rotational speed measurement sensor, the head end of calibration stay cord is used for linking to each other with the blade seat, the tail end connection of calibration stay cord has stay cord tensioning structure, reversing pulley has at least three, wherein two reversing pulleys are downside reversing pulley, one of them reversing pulley is the upside reversing pulley that the position is in downside reversing pulley upside, rotational speed measurement pulley is located upside reversing pulley side, stay cord tensioning structure is including being located at least a pair of centre gripping wheels of rotational speed measurement pulley upside, the calibration stay cord centre gripping is in between corresponding a pair of centre gripping wheels and with the centre gripping wheel contact rolling fit, be connected with the centre gripping wheel floating spring on the centre gripping wheel, the head end extending direction of calibration stay cord is the same with the direction of blade seat, or the head end extending direction of calibration stay cord is arranged with the direction slope of blade seat's of sharpness tester calibrating device still includes the angle measurement device that is used for detecting contained angle between calibration stay cord head end and the blade seat moving direction, the head end cluster of calibration stay cord is equipped with first side measuring device, the sharpness tester still includes the bottom measuring device that is provided with the second measuring sensor.
2. The blade sharpness tester calibration apparatus according to claim 1, characterized in that: the diameter of the rotating speed measuring pulley is smaller than that of the upper reversing pulley, and the contact length of the calibrating stay rope and the rotating speed measuring pulley is not smaller than 1/2 of the circumference of the rotating speed measuring pulley.
3. The blade sharpness tester calibration apparatus according to claim 1, characterized in that: the head end of the calibration stay cord is connected with the blade seat through the connecting seat, the connecting seat comprises a fixed seat and a connecting rod connected with the fixed seat through a rotating shaft, the head end of the calibration stay cord is connected onto the connecting rod, and the angle measuring device is an angle sensor for detecting the rotating angle of the rotating shaft.
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 |
|---|---|
| CN113075078A CN113075078A (en) | 2021-07-06 |
| CN113075078B true CN113075078B (en) | 2024-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110304156.9A Active CN113075078B (en) | 2021-03-22 | 2021-03-22 | Blade sharpness tester calibrating device |
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| Country | Link |
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| CN (1) | CN113075078B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118418225B (en) * | 2024-07-05 | 2024-09-27 | 泰州市中亿洁具有限公司 | Cutting device is used in plastic products processing |
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| 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 |
| 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 |
| 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 |
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| US20070209344A1 (en) * | 2006-03-10 | 2007-09-13 | Textron Inc. | Sharpness monitor for indicating turf mower reel blade condition |
| EP2270468B1 (en) * | 2009-05-26 | 2018-06-20 | E. I. du Pont de Nemours and Company | Apparatus for determining cut resistance |
| US10751895B2 (en) * | 2017-05-19 | 2020-08-25 | The Gillette Company Llc | Apparatus for testing razor blades and method for same |
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| 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 |
| 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 |
| 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 |
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| CN113075078A (en) | 2021-07-06 |
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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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