CN105259042A - Evaluation method for processing characteristics of diamond pellet - Google Patents
Evaluation method for processing characteristics of diamond pellet Download PDFInfo
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- CN105259042A CN105259042A CN201510589919.3A CN201510589919A CN105259042A CN 105259042 A CN105259042 A CN 105259042A CN 201510589919 A CN201510589919 A CN 201510589919A CN 105259042 A CN105259042 A CN 105259042A
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Abstract
The invention provides an evaluation method for processing characteristics of a diamond pellet. The method comprises the following steps: 1) setting a characteristic index system of the diamond pellet, wherein the characteristic index system comprises integral rigidity and microscopic hardness, the integral rigidity characterizes shape preserving ability of the pellet during processing of a workpiece and the microscopic hardness characterizes influence of the pellet on surface quality of the workpiece during processing, presetting rigidity thresholds used for dividing grades of the integral rigidity and presetting hardness thresholds used for dividing grades of the microscopic hardness; 2) carrying out constant-speed loading on a to-be-evaluated diamond pellet by using a pressure testing machine, measuring a pressure-deformation curve, calculating the integral rigidity, and comparing the calculated integral rigidity with the rigidity thresholds used for dividing grades so as to obtain the grade of the integral rigidity; and 3) detecting the microscopic hardness of the to-be-evaluated diamond pellet and comparing the detected microscopic hardness with the hardness thresholds used for dividing grades so as to obtain the grade of the microscopic hardness. The method provided by the invention prevents statistics through a great number of experiments and has good rapidity.
Description
Technical field
The present invention relates to grinding technology field, especially a kind of evaluation method of adamas pellet processing characteristics.
Background technology
In attrition process, adamas pellet, as fixed abrasive material grinding tool, is used in the attrition process of the hard brittle materials such as optical glass, pottery, jewel in a large number.The difference of the factors such as adamas pellet bonding agent, diamond dust concentration, affects surface figure accuracy and the surfaceness of work pieces process rear surface.Usually, the surface figure accuracy of the adamas pellet processing work of the mixture that comparatively hardens is better, and surfaceness is poor.And better compared with the surfaceness of the adamas pellet processing work of soft junction mixture, and surface figure accuracy is poor.Because the actual measurement surface figure accuracy of workpiece to be machined and surfaceness also exist larger mobility scale.Weigh the comprehensive process ability characteristic of different adamas pellet in surface figure accuracy and surfaceness, needing great many of experiments to add up could determine.In order to the different adamas pellet of Fast Evaluation is at the comprehensive process ability characteristic of surface figure accuracy and surfaceness, a kind of evaluation method weighing adamas pellet processing characteristics need be set up, in order to contrast with assess the characteristic of different adamas pellet when processing work, thus as the deliberated index of research and development and production adamas pellet.
Summary of the invention
Need that great many of experiments is added up, the poor deficiency of rapidity in order to what overcome the evaluation method of existing adamas pellet processing characteristics, the invention provides a kind of evaluation method avoided by the good adamas pellet processing characteristics of great many of experiments statistics, rapidity.
The technical solution adopted for the present invention to solve the technical problems is:
An evaluation method for adamas pellet processing characteristics, described evaluation method comprises following process:
1) set up the characteristic index system of adamas pellet, described characteristic index system comprises integral rigidity and microhardness, and described integral rigidity characterizes the conformal ability of pellet when processing work, other rigidity threshold value of the partition level of given integral rigidity; Described microhardness characterizes pellet and adds the impact of man-hour on workpiece surface quality, other hardness threshold value of the partition level of given microhardness;
2) adopt pressure testing machine to carry out constant speed loading to adamas pellet to be evaluated, measure pressure-deformation curve, calculate integral rigidity, compare according to other rigidity threshold value of current overall rigidity and partition level the rank obtaining integral rigidity;
3) detect the microhardness of adamas pellet to be evaluated, compare according to other hardness threshold value of current microhardness and partition level the rank obtaining microhardness.
Further, described step 3) in, if the hardness of adamas pellet to be evaluated is more than default high threshold, judge to belong to harder pellet, adopt Rockwell hardometer direct-detection microhardness.
Or: described step 3) in, if the hardness of adamas pellet to be evaluated is lower than default Low threshold, judge to belong to softer pellet, microhardness adopts shore hardness, and described shore hardness characterizes its local abrasive particle and to cave in easy degree, detects shore hardness.
Technical conceive of the present invention is: in order to analyze grinding adamas pellet self-characteristic, the characteristic index system of adamas pellet need be set up to the processing surface figure accuracy characterizing it and have at processing work and surface quality performance, and evaluation method is provided with following two indices:
Integral rigidity, characterizes the conformal ability of pellet when processing work.Pressure testing machine carries out constant speed loading to pellet, measures its pressure-deformation curve, calculate its integral rigidity.Integral rigidity large conformal ability is better.
Microhardness, characterizes pellet and adds the impact of man-hour on workpiece surface quality.Microhardness mainly reflect abrasive particle in pellet stressed after to cave in easy degree, microhardness abrasive particle less than normal such as more easily to form at the cutting-in processing.Rockwell hardometer can be adopted to measure harder pellet.Conventional micro-hardness measurement method is not easily directly adopted to softer pellet, shore hardness can be adopted to cave in easy degree to characterize its local abrasive particle.
Beneficial effect of the present invention is mainly manifested in: avoid by great many of experiments statistics, rapidity well, practicality is good.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of different composite binder diamond pellet load deflection curve.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1, a kind of evaluation method of adamas pellet processing characteristics, described evaluation method comprises following process:
1) set up the characteristic index system of adamas pellet, described characteristic index system comprises integral rigidity and microhardness, and described integral rigidity characterizes the conformal ability of pellet when processing work, other rigidity threshold value of the partition level of given integral rigidity; Described microhardness characterizes pellet and adds the impact of man-hour on workpiece surface quality, other hardness threshold value of the partition level of given microhardness;
2) adopt pressure testing machine to carry out constant speed loading to adamas pellet to be evaluated, measure pressure-deformation curve, calculate integral rigidity, compare according to other rigidity threshold value of current overall rigidity and partition level the rank obtaining integral rigidity;
3) detect the microhardness of adamas pellet to be evaluated, compare according to other hardness threshold value of current microhardness and partition level the rank obtaining microhardness.
Further, described step 3) in, if the hardness of adamas pellet to be evaluated is more than default high threshold, judge to belong to harder pellet, adopt Rockwell hardometer direct-detection microhardness.
Or: described step 3) in, if the hardness of adamas pellet to be evaluated is lower than default Low threshold, judge to belong to softer pellet, microhardness adopts shore hardness, and described shore hardness characterizes its local abrasive particle and to cave in easy degree, detects shore hardness.
In the present embodiment, detect its pressure force-displacement curve under different composite bonding agent and metallic bond pellet are placed in pressure testing machine, maximum pressure is set to 600N, and loading speed is 0.5mm/min, as shown in Figure 1.The mean rigidity of different binder diamond pellet reflection non-deformability is as shown in table 1.The mean rigidity of the adamas pellet of bonding agent 1 is 2031.7-2057.4N/mm, it can have good surface figure accuracy when processing work, and bonding agent 3 adamas pellet mean rigidity is 1755.5-1822N/mm, its mean rigidity is relatively little, and when processing work, surface figure accuracy is not so good as the adamas pellet of bonding agent 1 and bonding agent 2.
The Rockwell's hardness of combined binder 1 adamas pellet is 12-13, the Rockwell's hardness of combined binder 2 adamas pellet is 6-8, the Rockwell's hardness of combined binder 3 adamas pellet is 88-90, and therefore the above two have better surfaceness when work brittleness workpiece.
Content described in this instructions embodiment is only enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (3)
1. an evaluation method for adamas pellet processing characteristics, is characterized in that: described evaluation method comprises following process:
1) set up the characteristic index system of adamas pellet, described characteristic index system comprises integral rigidity and microhardness, and described integral rigidity characterizes the conformal ability of pellet when processing work, other rigidity threshold value of the partition level of given integral rigidity; Described microhardness characterizes pellet and adds the impact of man-hour on workpiece surface quality, other hardness threshold value of the partition level of given microhardness;
2) adopt pressure testing machine to carry out constant speed loading to adamas pellet to be evaluated, measure pressure-deformation curve, calculate integral rigidity, compare according to other rigidity threshold value of current overall rigidity and partition level the rank obtaining integral rigidity;
3) detect the microhardness of adamas pellet to be evaluated, compare according to other hardness threshold value of current microhardness and partition level the rank obtaining microhardness.
2. the evaluation method of a kind of adamas pellet processing characteristics as claimed in claim 1, it is characterized in that: described step 3) in, if the hardness of adamas pellet to be evaluated is more than default high threshold, judge to belong to harder pellet, adopt Rockwell hardometer direct-detection microhardness.
3. the evaluation method of a kind of adamas pellet processing characteristics as claimed in claim 1, it is characterized in that: described step 3) in, if the hardness of adamas pellet to be evaluated is lower than default Low threshold, judge to belong to softer pellet, microhardness adopts shore hardness, described shore hardness characterizes its local abrasive particle and to cave in easy degree, detects shore hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510589919.3A CN105259042A (en) | 2015-09-16 | 2015-09-16 | Evaluation method for processing characteristics of diamond pellet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510589919.3A CN105259042A (en) | 2015-09-16 | 2015-09-16 | Evaluation method for processing characteristics of diamond pellet |
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| CN105259042A true CN105259042A (en) | 2016-01-20 |
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| CN201510589919.3A Pending CN105259042A (en) | 2015-09-16 | 2015-09-16 | Evaluation method for processing characteristics of diamond pellet |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362535A (en) * | 1979-10-09 | 1982-12-07 | Mitsui Mining & Smelting Co., Ltd. | Sintered metal bonded diamond abrasive articles |
| CN101183062A (en) * | 2007-11-06 | 2008-05-21 | 浙江工业大学 | Hardness detection method of semi-fixed abrasive grain abrasive tools |
-
2015
- 2015-09-16 CN CN201510589919.3A patent/CN105259042A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4362535A (en) * | 1979-10-09 | 1982-12-07 | Mitsui Mining & Smelting Co., Ltd. | Sintered metal bonded diamond abrasive articles |
| CN101183062A (en) * | 2007-11-06 | 2008-05-21 | 浙江工业大学 | Hardness detection method of semi-fixed abrasive grain abrasive tools |
Non-Patent Citations (3)
| Title |
|---|
| 夏 清等: "陶瓷结合剂金刚石磨具制备工艺研究", 《工具技术》 * |
| 舒朝濂: "《现代光学制造技术》", 31 August 2008 * |
| 蔡 立: "金属结合剂在金刚石丸片精磨中的影响", 《光学技术》 * |
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Application publication date: 20160120 |
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