CN101183062A - Hardness detection method of semi-fixed abrasive grain abrasive tools - Google Patents
Hardness detection method of semi-fixed abrasive grain abrasive tools Download PDFInfo
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- CN101183062A CN101183062A CNA2007101565184A CN200710156518A CN101183062A CN 101183062 A CN101183062 A CN 101183062A CN A2007101565184 A CNA2007101565184 A CN A2007101565184A CN 200710156518 A CN200710156518 A CN 200710156518A CN 101183062 A CN101183062 A CN 101183062A
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Abstract
The present invention provides a hardness testing method for a half fixation abrasive grain sharper. The hardness feature of the half fixation abrasive grain sharper is characterized by Shore hardness. The hardness parameter of the half fixation abrasive grain sharper is measured by a Shore durometer. The steps of the measurement are as follows: (1) the half fixation abrasive grain sharper workpiece is placed on a plane; the Shore durometer is held; a pressure foot is kept parallel with the surface of the workpiece; the pressure needle of the Shore durometer is pressed into the workpiece vertically to lead the pressure foot to contact with the workpiece. (2) one second after the pressure foot completely contacting with the workpiece, the reading on the text meter of the Shore durometer is read and is the hardness value. (3) The steps (1) and (2) are repeated; the hardness values are measured in at least five different positions on the workpiece and an average value is a hardness test value. The present invention discloses the hardness test method of testing the hardness value of the half fixation abrasive grain sharper by the Shore durometer; the measurement is simple, quick and non-destructive.
Description
(1) technical field
The invention belongs to the hardness detection range, relate in particular to the hardness detection method of semi-fixation abrasive grain grinding tool.
(2) background technology
Semi-fixation abrasive grain grinding tool has machining precision height, advantage of high processing efficiency, can effectively reduce workpiece accuracy in the ultraprecise processing to the be evenly distributed susceptibility of degree of wear particle size, reduces the workpiece repair rate, and then enhances productivity, and reduces cost.Hardness is the important indicator of all grinding tools, and semi-fixation abrasive grain grinding tool is no exception.The hardness of semi-fixation abrasive grain grinding tool has characterized the resistivity that grinding tool is invaded hard particles the hold and the grinding tool of abrasive particle, is the important evidence that semi-fixation abrasive grain grinding tool is selected for use in the actual production process.
Conventional grinding tool characterizes with Rockwell's hardness usually, under certain load an adamas cone or steel ball are being pressed into the measured material surface, is obtained the hardness of material by the degree of depth of impression during measurement.Similarly also have Brinell hardness (a certain size the steel ball that hardens to be pressed into material surface with certain load, characterize with the load and the ratio of its area of indentation) and Vickers hardness (is that 136 ° the square awl injector of adamas is pressed into material surface with 120kg with interior load and drift angle, and the surface area of usefulness material impression pit is divided by load value).The measuring principle of Rockwell's hardness, Brinell hardness, Vickers hardness is utilizes pressure head to make measured material produce plastic yield, then according to the area of indentation or depth calculation hardness number.And semi-fixation abrasive grain grinding tool direct yield failure under the pressure head effect forms hole, can not form impression, therefore can not characterize with above three's hardness.Conventional another hardness commonly used of grinding tool is sandblast hardness, but is primarily aimed at the grinding tool that hardness is higher, granularity is thicker, is applicable to that vitrified bond and resinoid bond, abrasive grain are the common grinding tool of F36～F150, also are unsuitable for semi-fixation abrasive grain grinding tool.
(3) summary of the invention
In order to overcome the deficiency that existing conventional grade of abrasive tool index can not effectively characterize the hardness of semi-fixation abrasive grain grinding tool, the present invention proposes a kind of use Shao Shi (Shore) hardness and characterizes semi-fixation abrasive grain grinding tool, and utilizes Shore durometer that semi-fixation abrasive grain grinding tool hardness is carried out convenient and swift, nondestructive detection method.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of hardness detection method of semi-fixation abrasive grain grinding tool uses shore hardness that the stiffness characteristics of semi-fixation abrasive grain grinding tool is characterized, and with the hardness parameter of Shore durometer measurement semi-fixation abrasive grain grinding tool, described hardness detection method may further comprise the steps:
(1), the semi-fixation abrasive grain grinding tool workpiece is placed in the plane, arrest Shore durometer, keep pressing foot to be parallel to surface of the work, the pressing of Shore durometer vertically is pressed into workpiece, make and press foot to contact with workpiece;
(2), contact the reading that the back is read the measuring instrument of Shore durometer in the 1s fully, this reading is a hardness number at described pressure foot and workpiece;
(3), repeat above-mentioned (1)-(2), measure hardness numbers at least five diverse locations of workpiece, averaging is the hardness measurement value.
As preferred a kind of scheme: in described (3), on workpiece, measure hardness number at a distance of the diverse location of 6mm at least.
Further, in described (1), described pressing is apart from edge of work 12mm at least.
Further again, described thickness of workpiece is 6mm at least.
Technical conceive of the present invention is: use shore hardness that the stiffness characteristics of semi-fixation abrasive grain grinding tool is characterized, use Shore durometer to measure the hardness parameter of semi-fixation abrasive grain grinding tool.
Shore durometer claims durometer again, and its measurement ultimate principle is: the steel pressing with definite shape, be pressed into surface of the work, and when pressing sufficient plane and surface of the work to fit tightly, measure the extension elongation that pressing is pressed sufficient plane relatively.Shore durometer number is to represent with this extension elongation, is shore hardness unit with the extension elongation of 0.025mm.
Shao Er is scleroscopic simple in structure, with external force scleroscopic pressing is pressed on the surface of the work during test, the degree of depth that pressing is pressed into workpiece as shown in the formula:
T＝2.5-0.025h
In the formula: the T-pressing is pressed into the workpiece degree of depth, mm;
Hardness number that h-surveys;
2.5-pressing exposed portions serve length, mm;
0.025-the every degree pressing of sclerometer pointer shortens length, mm.
Shore durometer can be divided into A type, C type and D type.Recommend to recommend when D type hardness tester instrumentation value is lower than 20 with A type hardness tester meter with D type hardness tester meter when A type hardness tester meter side value exceeds 90, it is inaccurate that A type hardness tester meter indicating value is lower than at 10 o'clock, and measurement result can not be used.
Use shore hardness that the stiffness characteristics of semi-fixation abrasive grain grinding tool is characterized, use Shore durometer to measure the hardness parameter of semi-fixation abrasive grain grinding tool.Shore durometer A type is used to measure the hardness of soft semi-fixation abrasive grain grinding tool, and C and D type are used to measure the hardness of semihard and hard semi-fixation abrasive grain grinding tool.
Beneficial effect of the present invention mainly shows: use shore hardness can effectively characterize the stiffness characteristics of semi-fixation abrasive grain grinding tool, use shore hardness can convenient and swiftly, non-destroy the hardness that semi-fixation abrasive grain grinding tool is measured on ground.
Description of drawings
Fig. 1 is the synoptic diagram that semi-fixation abrasive grain grinding tool hardness detects.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.1 is the semi-fixation abrasive grain grinding tool workpiece among the figure, and 2 for pressing foot, and 3 is pressing, and 4 is spring, and 5 is reader.
With reference to accompanying drawing 1 and Fig. 2, a kind of hardness detection method of semi-fixation abrasive grain grinding tool, described hardness detection method may further comprise the steps: (1), semi-fixation abrasive grain grinding tool workpiece 1 is placed in the plane, arrest Shore durometer, keep pressing foot 2 to be parallel to surface of the work, the pressing 3 of Shore durometer vertically is pressed into workpiece, makes and press foot to contact with workpiece; (2), contact the reading that the back is read the measuring instrument of Shore durometer in the 1s fully, this reading is a hardness number at described pressure foot and workpiece; (3), repeat above-mentioned (1)-(2), measure hardness numbers at least five diverse locations of workpiece, averaging is the hardness measurement value.
In described (3), the diverse location at a distance of 6mm at least on workpiece 1 is measured hardness number.In described (1), described pressing 3 is apart from edge of work 12mm at least.Described thickness of workpiece is 6mm at least.
The hardness measurement basic step is as follows:
Applied force will just be enough to make presses foot to contact fully with workpiece, is pressing foot and workpiece to contact reading in the 1s of back fully.
Measure hardness number five times at workpiece at a distance of the diverse location of 6mm at least, average.
Thickness of workpiece is 6mm at least, and workpiece must have enough areas, makes pressing and workpiece contact position apart from edge 12mm at least, and the surface of workpiece is necessary smooth with the part of pressing foot contact.
The abrasive particle of present embodiment is the 1000# silicon carbide abrasive particles; Tackifier is PVA (polyvinyl alcohol (PVA)); Adjuvant is the silicone oil water-proofing agent; The mass percent of each component is: 1000# silicon carbide abrasive particles 93.5%, PVA tackifier 1.5%, silicone oil water-proofing agent 5%.D type shore hardness measured value is 30.2.
The abrasive particle of present embodiment is the 1000# silicon carbide abrasive particles; Tackifier is PVA (polyvinyl alcohol (PVA)); Adjuvant is the silicone oil water-proofing agent; The mass percent of each component is: 1000# silicon carbide abrasive particles 92.5%, PVA tackifier 2.5%, silicone oil water-proofing agent 5%.D type shore hardness measured value is 36.0.
The abrasive particle of present embodiment is the 1000# silicon carbide abrasive particles; Tackifier is PVA (polyvinyl alcohol (PVA)); Adjuvant is the silicone oil water-proofing agent; The mass percent of each component is: 1000# silicon carbide abrasive particles 91.5%, PVA tackifier 3.5%, silicone oil water-proofing agent 5%.D type shore hardness measured value is 39.0.
The abrasive particle of present embodiment is the 1000# silicon carbide abrasive particles; Tackifier is PVA (polyvinyl alcohol (PVA)); Adjuvant is the silicone oil water-proofing agent; The mass percent of each component is: 1000# silicon carbide abrasive particles 90.5%, PVA tackifier 4.5%, silicone oil water-proofing agent 5%.D type shore hardness measured value is 50.5.
The abrasive particle of present embodiment is the 1000# silicon carbide abrasive particles; Tackifier is PVA (polyvinyl alcohol (PVA)); Adjuvant is the silicone oil water-proofing agent; The mass percent of each component is: 1000# silicon carbide abrasive particles 89.5%, PVA tackifier 5.5%, silicone oil water-proofing agent 5%.D type shore hardness measured value is 56.5.
Embodiment 6
The abrasive particle of present embodiment is the 2000# alumina abrasive grain; Tackifier is CMC (sodium carboxymethyl cellulose); Adjuvant is the tbp defoamer; The mass percent of each component is: 1000# alumina abrasive grain 96%, CMC tackifier 3.5%, tbp defoamer 0.5%.A type shore hardness measured value is 67.
Embodiment 7
The abrasive particle of present embodiment is a 4000# boron carbide abrasive particle; Tackifier is an Arabic gum; Adjuvant is graphite-filled dose and octanol defoamer; The mass percent of each component is: 4000# boron carbide abrasive particle 84%, Arabic gum 9.7%, graphite-filled dose 6%, octanol defoamer 0.3%.D type shore hardness measured value is 68.3.
Embodiment 8
The abrasive particle of present embodiment is a 4000# boron carbide abrasive particle; Tackifier is a gelatin; Adjuvant is silicon latex water-proofing agent and tbp defoamer; The mass percent of each component is: 4000# boron carbide abrasive particle 92%, gelatin 3%, silicon latex water-proofing agent 4.5%, tbp defoamer 0.5%.C type shore hardness measured value is 45.4.
Claims (5)
1. the hardness detection method of a semi-fixation abrasive grain grinding tool is characterized in that: use shore hardness that the stiffness characteristics of semi-fixation abrasive grain grinding tool is characterized, measure the hardness parameter of semi-fixation abrasive grain grinding tool with Shore durometer.
2. the hardness detection method of a kind of semi-fixation abrasive grain grinding tool as claimed in claim 1, it is characterized in that: described hardness detection method may further comprise the steps:
(1), the semi-fixation abrasive grain grinding tool workpiece is placed in the plane, arrest Shore durometer, keep pressing foot to be parallel to surface of the work, the pressing of Shore durometer vertically is pressed into workpiece, make and press foot to contact with workpiece;
(2), contact the reading that the back is read the measuring instrument of Shore durometer in the 1s fully, this reading is a hardness number at described pressure foot and workpiece;
(3), repeat above-mentioned (1)-(2), measure hardness numbers at least five diverse locations of workpiece, averaging is the hardness measurement value.
3. the hardness detection method of a kind of semi-fixation abrasive grain grinding tool as claimed in claim 1 or 2 is characterized in that: in described (3), measure hardness number at a distance of the diverse location of 6mm at least on workpiece.
4. the hardness detection method of a kind of semi-fixation abrasive grain grinding tool as claimed in claim 3 is characterized in that: in described (1), described pressing is apart from edge of work 12mm at least.
5. the hardness detection method of a kind of semi-fixation abrasive grain grinding tool as claimed in claim 4, it is characterized in that: described thickness of workpiece is 6mm at least.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101565184A CN101183062B (en) | 2007-11-06 | 2007-11-06 | Hardness detection method of semi-fixed abrasive grain abrasive tools |
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| CN2007101565184A CN101183062B (en) | 2007-11-06 | 2007-11-06 | Hardness detection method of semi-fixed abrasive grain abrasive tools |
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| CN101183062B CN101183062B (en) | 2010-06-16 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267677A (en) * | 2013-05-21 | 2013-08-28 | 苏州创丰精密五金有限公司 | Cylindrical surface hardness testing fixture |
| CN104280301A (en) * | 2014-10-28 | 2015-01-14 | 合肥卓越分析仪器有限责任公司 | Portable mold hardness measurement device |
| CN105259042A (en) * | 2015-09-16 | 2016-01-20 | 浙江工业大学 | Evaluation method for processing characteristics of diamond pellet |
| CN106153483A (en) * | 2016-08-27 | 2016-11-23 | 李子振 | A kind of durometer being applicable to rubber and operational approach thereof |
| CN108333068A (en) * | 2017-12-18 | 2018-07-27 | 海太半导体（无锡）有限公司 | A kind of glue curing degree detecting method |
| CN109187338A (en) * | 2018-09-18 | 2019-01-11 | 河南工业大学 | A kind of detection method of bonding agent to abrasive grain holding power |
| CN109187246A (en) * | 2018-10-25 | 2019-01-11 | 中国工程物理研究院激光聚变研究中心 | A kind of bonded abrasive tool rigidity detection device and its detection method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762660A (en) * | 2004-10-22 | 2006-04-26 | 郑州人造金刚石及制品工程技术研究中心 | Diamond resin grinder |
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2007
- 2007-11-06 CN CN2007101565184A patent/CN101183062B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267677A (en) * | 2013-05-21 | 2013-08-28 | 苏州创丰精密五金有限公司 | Cylindrical surface hardness testing fixture |
| CN104280301A (en) * | 2014-10-28 | 2015-01-14 | 合肥卓越分析仪器有限责任公司 | Portable mold hardness measurement device |
| CN105259042A (en) * | 2015-09-16 | 2016-01-20 | 浙江工业大学 | Evaluation method for processing characteristics of diamond pellet |
| CN106153483A (en) * | 2016-08-27 | 2016-11-23 | 李子振 | A kind of durometer being applicable to rubber and operational approach thereof |
| CN108333068A (en) * | 2017-12-18 | 2018-07-27 | 海太半导体（无锡）有限公司 | A kind of glue curing degree detecting method |
| CN109187338A (en) * | 2018-09-18 | 2019-01-11 | 河南工业大学 | A kind of detection method of bonding agent to abrasive grain holding power |
| CN109187246A (en) * | 2018-10-25 | 2019-01-11 | 中国工程物理研究院激光聚变研究中心 | A kind of bonded abrasive tool rigidity detection device and its detection method |
| CN109187246B (en) * | 2018-10-25 | 2023-09-22 | 中国工程物理研究院激光聚变研究中心 | Hardness detection device and method for bonded abrasive tool |
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