CN116046596A - Device and method for detecting machining performance of fluid abrasive special for abrasive grain flow finishing - Google Patents

Device and method for detecting machining performance of fluid abrasive special for abrasive grain flow finishing Download PDF

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Publication number
CN116046596A
CN116046596A CN202211623922.9A CN202211623922A CN116046596A CN 116046596 A CN116046596 A CN 116046596A CN 202211623922 A CN202211623922 A CN 202211623922A CN 116046596 A CN116046596 A CN 116046596A
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abrasive
sample
fluid
machine tool
cylinder
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范武林
孙玉利
刘超
赵建社
杨范轩
刘彦磊
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Jiangsu Jicui Precision Manufacturing Research Institute Co ltd
AECC South Industry Co Ltd
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Jiangsu Jicui Precision Manufacturing Research Institute Co ltd
AECC South Industry Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • 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
    • G01N3/58—Investigating machinability by cutting tools; Investigating the cutting ability of tools
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract

The invention discloses a special fluid abrasive machining performance detection device and method for abrasive flow finishing machining, wherein the device comprises a clamp and a sample; the fixture is placed on a machine tool workbench, the fixture clamps a sample, the sample is a cylinder with a variable-section inner hole, a lower abrasive cylinder is fixedly connected to the lower surface of the machine tool workbench, fluid abrasives are arranged in the lower abrasive cylinder, an abrasive cylinder piston is arranged in the lower abrasive cylinder, the abrasive cylinder piston is connected with the machine tool, and the machine tool can control the abrasive cylinder piston to extrude the fluid abrasives in the lower abrasive cylinder to flow through the inner hole of the sample. The abrasive flow finishing test based on the new fluid abrasive and the old fluid abrasive is respectively implemented under the same pressure and the same fluid abrasive consumption on the basis of the device, so that the time of the two tests and the quality change of the samples before and after the tests are obtained, and further the fluid abrasive flow performance index and the cutting performance index can be calculated. The method has the advantages of low cost, simple operation and high reliability, and can be directly used for the production field to quantitatively evaluate the cutting performance of the fluid abrasive.

Description

Device and method for detecting machining performance of fluid abrasive special for abrasive grain flow finishing
Technical Field
The invention belongs to the technical field of fluid abrasives, and particularly relates to a device and a method for detecting machining performance of a fluid abrasive special for abrasive flow finishing machining.
Background
The fluid abrasive is a solid-liquid two-phase mixture which is formed by uniformly mixing liquid polymer materials, hard particles, a lubricant and other additives. The method has the characteristics of good processing accessibility, wide material adaptability and high processing surface quality, and is widely used for precision and ultra-precision processing of rough surfaces.
Abrasive flow finishing is a special machining technology for improving the quality of a machined surface by honing the surface of a workpiece through extrusion of fluid abrasive. In abrasive grain flow finishing, when a brand new fluid abrasive is used for a period of time, the processability such as fluidity and machinability are changed, the fluidity and machinability are deteriorated, and the finishing efficiency and the quality of the finished surface are changed, which is an important reason for influencing the quality stability of the product in mass production. Therefore, the technology for detecting the processability of the fluid abrasive is becoming one of the focuses in the art.
At present, the main flow detection instrument for rheological property of the fluid abrasive is a viscometer and a rotational rheometer, but the main flow detection instrument is difficult to detect with high cost, harsh detection conditions, incapability of detecting and characterizing cutting performance of the fluid abrasive and the like, so that the main flow detection instrument is only suitable for laboratories and scientific research occasions and does not meet engineering application. Therefore, the detection device and the detection method which are simple and easy to operate, high in reliability and complete in functions are sought, and the detection device and the detection method are the technical problems to be solved in the production field.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device and a method for detecting the processing performance of a fluid abrasive special for abrasive particle flow finishing processing aiming at the defects of the prior art.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a special fluid abrasive machining performance detection device for abrasive grain flow finishing machining comprises a clamp and two identical samples;
the clamp is arranged on a workbench of the abrasive particle flow finishing machine tool and used for clamping a sample, and the sample is a cylinder with a variable-section inner hole;
the lower surface of the machine tool workbench is fixedly connected with a lower abrasive cylinder, fluid abrasives are arranged in the lower abrasive cylinder, an abrasive cylinder piston is arranged in the lower abrasive cylinder, the abrasive cylinder piston is connected with the machine tool, and the machine tool can control the abrasive cylinder piston to extrude the fluid abrasives in the lower abrasive cylinder to flow through an inner hole of a sample.
In order to optimize the technical scheme, the specific measures adopted further comprise:
the inner hole shape of the sample comprises a gradual change section circular straight hole and a constant section circular bent hole.
The clamp comprises an upper gasket, a gland, a lower gasket, a supporting ring and a base;
the inner diameter of the supporting ring is larger than the outer diameter of the sample, the sample is positioned in the supporting ring, and the supporting ring is connected between the gland and the base;
the gland and the base are provided with central holes;
the upper gasket and the lower gasket are circular rings, and are respectively arranged between the gland and the central hole of the base;
the sample is detachably arranged between the upper gasket and the lower gasket, an inner hole of the upper gasket is matched with one end of an inner hole of the sample, and an inner hole of the lower gasket is matched with the other end of the inner hole of the sample;
the inner holes of the samples are completely matched with the inner holes of the upper gasket and the lower gasket after the clamp clamps the samples.
The central holes of the gland and the base are countersunk through holes, and the diameters of the countersunk holes are equal to the outer diameters of the upper gasket, the lower gasket and the sample;
the diameter of the bottom hole of the gland, the diameter of the inner hole of the upper gasket and the diameter of the inner hole of the end face on the sample matched with the upper gasket are equal;
the diameter of the bottom hole of the base, the diameter of the inner hole of the lower gasket and the diameter of the end surface inner hole matched with the lower gasket on the sample are equal;
the lower surface of the gland and the upper surface of the base are provided with first annular grooves matched with the supporting rings;
the upper surface of the gland is provided with a second annular groove matched with the opening of the upper abrasive cylinder;
the upper grinding cylinder is clamped on the upper surface of the gland through a second annular groove and is communicated with the countersunk through hole of the gland.
The base is arranged on the upper surface of the machine tool workbench, and the machine tool workbench is provided with a through hole matched with the countersunk through hole of the base;
the lower grinding cylinder is communicated with the countersunk through hole of the base.
The upper gasket and the lower gasket are made of flexible materials, wherein the flexible materials comprise silicone rubber, fluororubber, latex and polyurethane rubber.
A method for detecting the machining performance of fluid abrasive specially used for abrasive grain flow finishing is to respectively implement abrasive grain flow finishing tests based on new fluid abrasive and old fluid abrasive under the same pressure and fluid abrasive consumption conditions to obtain the time of the two tests and the quality variation of the samples before and after the tests, and further calculate and obtain the fluid abrasive flow performance index zeta and the cutting performance index epsilon.
The method comprises the following steps:
step 1, test design:
designing the shape and the size of an inner hole of a sample, selecting materials, and selecting the working pressure of a machine tool and the dosage of fluid abrasive according to the characteristics of the fluid abrasive;
step 2, abrasive particle flow finishing processing test based on brand new fluid abrasive materials:
taking oneSample, using electronic balance to measure sample mass M before test 1 Then loading the totally new fluid abrasive into a lower abrasive cylinder, assembling the sample and the clamp, and placing the assembled sample and clamp on a machine tool workbench;
setting the working pressure of the machine tool according to the design of the step 1, controlling the dosage of the fluid abrasive by setting the processing cycle times, and starting the machine tool;
after the test is finished, record test time T N And the mass M of the tested sample is measured by an electronic balance 1 ’；
Step 3, abrasive flow finishing processing test based on old fluid abrasive:
taking a new sample, and measuring the mass M of the sample before the test by using an electronic balance 2 The method comprises the steps of replacing a brand new abrasive in an abrasive cylinder under a machine tool with an old abrasive to be tested, assembling a new sample with a clamp, and then placing the assembled sample on a machine tool workbench;
setting the same working pressure and the same machining cycle times of the machine tool as those of the step 2, and starting the machine tool;
after the test is finished, record test time T O And the mass M of the tested sample is measured by an electronic balance 2 ’；
Step 4, data analysis: and (3) calculating the mass change amounts of the samples before and after the test in the step (2) and the step (3), and calculating the fluid abrasive flow performance index zeta and the cutting performance index epsilon by combining the time of the test.
The fluid abrasive flow performance index ζ and the cutting performance index ε described in the above step 4 are calculated according to the following formulas:
Figure BDA0004003211040000031
wherein T is O Polishing the test time for the abrasive particle stream based on old fluid abrasive;
T N the abrasive particle flow finishing processing test time is based on brand new fluid abrasive;
ΔM O the mass change of the sample before and after the abrasive particle flow finishing test based on the old fluid abrasive;
ΔM N the mass variation of the sample before and after the abrasive particle flow finishing test based on the brand new fluid abrasive;
ΔM O and DeltaM N Calculated using the following formulas:
ΔM N ＝M 1 -M 1 ’
ΔM O ＝M 2 -M 2 ’。
the sample is made of metal or alloy material, and the hardness of the matrix material and the hardness of the surface of the inner hole of the sample are not higher than the hardness of hard abrasive particles in the fluid abrasive;
the minimum diameter of the inner hole of the sample is not smaller than 20 times of the maximum diameter of hard particles in the fluid abrasive, the height of the sample is not smaller than 5 times of the minimum diameter of the hard particles, and the volume of the fluid abrasive used for the abrasive particle flow finishing test is not smaller than 10 times of the volume of the inner hole of the sample.
The invention has the following beneficial effects:
the device clamp and two identical samples; the fixture is placed on an abrasive flow finishing machine tool workbench, the fixture is used for clamping a sample, the sample is a cylinder with a variable-section inner hole, a lower abrasive cylinder is fixedly connected to the lower surface of the machine tool workbench, fluid abrasives are arranged in the lower abrasive cylinder, an abrasive cylinder piston is arranged in the lower abrasive cylinder, the abrasive cylinder piston is connected with a machine tool, and the machine tool can control the abrasive cylinder piston to extrude the fluid abrasives in the lower abrasive cylinder to flow through the inner hole of the sample. The abrasive flow finishing test based on the new fluid abrasive and the old fluid abrasive is respectively implemented under the same pressure and the same fluid abrasive consumption on the basis of the device, so that the time of the two tests and the quality change of the samples before and after the tests are obtained, and further the fluid abrasive flow performance index and the cutting performance index can be calculated.
The device has the advantages of low cost, simple operation and high reliability, and can be directly used for the production field to quantitatively evaluate the cutting performance of the fluid abrasive.
Drawings
FIG. 1 is a schematic diagram of a measuring device of the present invention;
FIG. 2 is a schematic illustration of a sample in a measurement device of the present invention.
Marked in the figure as: 1. the device comprises an upper grinding cylinder, 2, an upper gasket, 3, a gland, 4, a sample, 5, a fluid grinding material, 6, a lower gasket, 7, a support ring, 8, a base, 9, a machine tool workbench, 10, a grinding cylinder piston, 11 and a lower grinding cylinder.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Although the steps of the present invention are arranged by reference numerals, the order of the steps is not limited, and the relative order of the steps may be adjusted unless the order of the steps is explicitly stated or the execution of a step requires other steps as a basis. It is to be understood that the term "and/or" as used herein relates to and encompasses any and all possible combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the special fluid abrasive machining performance detection device for abrasive flow finishing machining of the invention comprises a clamp and two identical samples 4;
the clamp is placed on a workbench 9 of an abrasive particle flow finishing machine tool, the clamp is used for clamping a sample 4, the sample 4 is a cylinder with a variable-section inner hole, and the sample 4 is a variable-section hollow cylinder metal sample assembled in the clamp;
the lower surface of the machine tool workbench 9 is fixedly connected with a lower abrasive cylinder 11, a fluid abrasive 5 is arranged in the lower abrasive cylinder 11, an abrasive cylinder piston 10 is arranged in the lower abrasive cylinder 11, the abrasive cylinder piston 10 is connected with an abrasive flow finishing machine tool, and the machine tool can control the abrasive cylinder piston 10 to extrude the fluid abrasive 5 in the lower abrasive cylinder 11 to flow through an inner hole of the sample 4.
The silicon carbide fluid abrasive material using the organic silicon polymer material as the matrix is widely applied to abrasive grain polishing and finishing processing, and the components of the silicon carbide fluid abrasive material can be irreversibly changed after long-term use, so that the processing performance is degraded. The device can be used for detecting and evaluating the fluidity and cutting performance of the old abrasive.
In an embodiment, the inner hole shape of the sample 4 includes a circular straight hole with a gradual change section and a circular curved hole with a constant section.
For example, the sample 4 is a 304 stainless steel cylinder with a variable-section circular straight hole, the inner hole of the sample is turned, the diameter is 40mm, the length is 100mm, the inner hole diameter is 30mm, the taper angle is 3 degrees, and the surface roughness R of the inner hole is a 0.2μm。
The clamp comprises an upper gasket 2, a gland 3, a lower gasket 6, a support ring 7 and a base 8;
the inner diameter of the supporting ring 7 is larger than the outer diameter of the sample 4, the sample 4 is positioned inside the supporting ring 7, and the supporting ring 7 is connected between the gland 3 and the base 8;
the gland 3 and the base 8 are provided with central holes;
the upper gasket 2 and the lower gasket 6 are circular rings, and the upper gasket 2 and the lower gasket 6 are respectively arranged between the gland 3 and the central hole of the base 8;
the sample 4 is detachably arranged between the upper gasket 2 and the lower gasket 6, the inner hole of the upper gasket 2 is matched with one end of the inner hole of the sample 4, and the inner hole of the lower gasket 6 is matched with the other end of the inner hole of the sample 4;
after the clamp clamps the sample 4, the inner holes of the sample 4 are completely matched with the inner holes of the upper gasket 2 and the lower gasket 6.
The central holes of the gland 3 and the base 8 are countersunk through holes, and the diameters of the countersunk holes are equal to the outer diameters of the upper gasket 2, the lower gasket 6 and the sample 4;
the diameter of the bottom hole of the gland 3, the diameter of the inner hole of the upper gasket 2 and the diameter of the inner hole of the end face of the sample 4 matched with the upper gasket 2 are equal;
the diameter of a bottom hole of the base 8, the diameter of an inner hole of the lower gasket 6 and the diameter of an inner hole of the end face of the sample 4 matched with the lower gasket 6 are equal;
the lower surface of the gland 3 and the upper surface of the base 8 are provided with first annular grooves matched with the supporting rings 7;
the upper surface of the gland 3 is provided with a second annular groove matched with the opening of the upper abrasive cylinder 1;
the upper grinding cylinder 1 is clamped on the upper surface of the gland 3 through a second annular groove and is communicated with a countersunk through hole of the gland 3.
The base 8 is arranged on the upper surface of the machine tool workbench 9, and the machine tool workbench 9 is provided with a through hole matched with the countersunk through hole of the base 8;
a lower grinding cylinder 11 is fixedly connected to the lower surface of the machine tool workbench 9;
the lower grinding cylinder 11 is communicated with the countersunk through hole of the base 8;
the fluid abrasive 5 is arranged in a lower abrasive cylinder 11, an abrasive cylinder piston 10 is arranged in the lower abrasive cylinder 11, and the abrasive cylinder piston 10 is connected with a machine tool; the abrasive cylinder piston 10 is used for extruding the fluid abrasive 5 in the lower abrasive cylinder 11 to flow through the inner hole of the sample.
The upper and lower gaskets 2 and 6 are made of flexible materials including, but not limited to, silicone rubber, fluororubber, latex, polyurethane rubber, and the like.
A method for detecting the machining performance of fluid abrasive specially used for abrasive grain flow finishing is to respectively implement abrasive grain flow finishing tests based on new fluid abrasive and old fluid abrasive under the same pressure and fluid abrasive consumption conditions to obtain the time of the two tests and the quality variation of the samples before and after the tests, and further calculate and obtain the fluid abrasive flow performance index zeta and the cutting performance index epsilon.
The detection of the processability of the fluid abrasive 5 comprises the following operative steps:
step 1, test design:
designing the shape and the size of an inner hole of the sample 4, selecting materials, and selecting the working pressure of a machine tool and the dosage of the fluid abrasive according to the characteristics of the fluid abrasive; if the machine pressure is set to 800psi, the fluid abrasive dosage is set to 100kg;
step 2, abrasive particle flow finishing processing test based on brand new fluid abrasive materials:
taking a sample 4, and measuring the mass M of the sample before the test by using an electronic balance 1 Then, the new fluid abrasive is put into the lower abrasive cylinder 11, and the sample 4 is assembled with the clamp and then is placed in the machine toolA work table 9;
setting the working pressure of the machine tool according to the design of the step 1, controlling the dosage of the fluid abrasive by setting the processing cycle times, and starting the machine tool;
after the test is finished, record test time T N And the mass M of the tested sample is measured by an electronic balance 1 ’；
Step 3, abrasive flow finishing processing test based on old fluid abrasive:
a new sample 4 is taken and the mass M of the sample before the test is measured by an electronic balance 2 The new abrasive in the lower abrasive cylinder 11 of the machine tool is changed into the old abrasive to be tested, and the new sample 4 and the clamp are assembled and then placed on the workbench 9 of the machine tool;
setting the same working pressure and the same machining cycle times of the machine tool as those of the step 2, and starting the machine tool;
after the test is finished, record test time T O And the mass M of the tested sample is measured by an electronic balance 2 ’；
Step 4, data analysis: and (3) calculating the mass change amounts of the samples before and after the test in the step (2) and the step (3), and calculating the fluid abrasive flow performance index zeta and the cutting performance index epsilon by combining the time of the test.
And 4, the fluid abrasive flow performance index zeta and the cutting performance index epsilon are calculated according to the following formulas:
Figure BDA0004003211040000061
wherein T is O Polishing the test time for the abrasive particle stream based on old fluid abrasive;
T N the abrasive particle flow finishing processing test time is based on brand new fluid abrasive;
ΔM O the mass change of the sample before and after the abrasive particle flow finishing test based on the old fluid abrasive;
ΔM N the mass variation of the sample before and after the abrasive particle flow finishing test based on the brand new fluid abrasive;
ΔM O and DeltaM N Calculated using the following formulas:
ΔM N ＝M 1 -M 1 ’
ΔM O ＝M 2 -M 2 ’。
the sample 4 is made of metal or alloy material, and the hardness of a matrix material and the hardness of the surface of an inner hole of the sample are not higher than the hardness of hard abrasive particles in the fluid abrasive;
the minimum diameter of the inner hole of the sample 4 is not smaller than 20 times of the maximum diameter of hard particles in the fluid abrasive, the height of the sample 4 is not smaller than 5 times of the minimum diameter of the hard particles, and the volume of the fluid abrasive 5 used for the abrasive particle flow finishing test is not smaller than 10 times of the volume of the inner hole of the sample 4.
It should be noted that the terms like "upper", "lower", "left", "right", "front", "rear", and the like are also used for descriptive purposes only and are not intended to limit the scope of the invention in which the invention may be practiced, but rather the relative relationship of the terms may be altered or modified without materially altering the teachings of the invention.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The special fluid abrasive machining performance detection device for abrasive grain flow finishing machining is characterized by comprising a clamp and two identical samples (4);
the clamp is arranged on a workbench (9) of the abrasive particle flow finishing machine tool and is used for clamping a sample (4), and the sample (4) is a cylinder with a variable-section inner hole;
the lower surface of the machine tool workbench (9) is fixedly connected with a lower abrasive cylinder (11), a fluid abrasive (5) is arranged in the lower abrasive cylinder (11), an abrasive cylinder piston (10) is arranged in the lower abrasive cylinder (11), the abrasive cylinder piston (10) is connected with an abrasive flow finishing machine tool, and the machine tool can control the abrasive cylinder piston (10) to extrude the fluid abrasive (5) in the lower abrasive cylinder (11) to flow through an inner hole of the sample (4).
2. The device for detecting the processing performance of the fluid abrasive special for abrasive grain flow finishing according to claim 1, wherein the inner hole shape of the sample (4) comprises a gradual-change cross-section circular straight hole and a constant-cross-section circular curved hole.
3. The special fluid abrasive machining performance detection device for abrasive grain flow finishing according to claim 1, wherein the clamp comprises an upper gasket (2), a gland (3), a lower gasket (6), a supporting ring (7) and a base (8);
the inner diameter of the supporting ring (7) is larger than the outer diameter of the sample (4), the sample (4) is positioned inside the supporting ring (7), and the supporting ring (7) is connected between the gland (3) and the base (8);
the gland (3) and the base (8) are provided with central holes;
the upper gasket (2) and the lower gasket (6) are circular rings, and the upper gasket (2) and the lower gasket (6) are respectively arranged between the gland (3) and the central hole of the base (8);
the sample (4) is detachably arranged between the upper gasket (2) and the lower gasket (6), the inner hole of the upper gasket (2) is matched with one end of the inner hole of the sample (4), and the inner hole of the lower gasket (6) is matched with the other end of the inner hole of the sample (4);
the inner holes of the sample (4) are completely matched with the inner holes of the upper gasket (2) and the lower gasket (6) after the clamp clamps the sample (4).
4. The special fluid abrasive machining performance detection device for abrasive grain flow finishing machining according to claim 3, wherein the central holes of the gland (3) and the base (8) are countersunk through holes, and the countersunk diameters of the countersunk through holes are equal to the outer diameters of the upper gasket (2), the lower gasket (6) and the sample (4);
the diameter of the bottom hole of the gland (3), the diameter of the inner hole of the upper gasket (2) and the diameter of the end surface inner hole matched with the upper gasket (2) on the sample (4) are equal;
the diameter of a bottom hole of the base (8), the diameter of an inner hole of the lower gasket (6) and the diameter of an inner hole of the end face of the sample (4) matched with the lower gasket (6) are equal;
the lower surface of the gland (3) and the upper surface of the base (8) are provided with first annular grooves matched with the supporting ring (7);
the upper surface of the gland (3) is provided with a second annular groove matched with the opening of the upper grinding cylinder (1);
the upper grinding cylinder (1) is clamped on the upper surface of the gland (3) through a second annular groove and is communicated with the countersunk through hole of the gland (3).
5. The special fluid abrasive machining performance detection device for abrasive grain flow finishing machining according to claim 4, wherein the base (8) is arranged on the upper surface of a machine tool workbench (9), and the machine tool workbench (9) is provided with a through hole matched with a countersunk through hole of the base (8);
the lower abrasive cylinder (11) is communicated with the countersunk through hole of the base (8).
6. A fluid abrasive machining performance detection device special for abrasive grain flow finishing according to claim 3, wherein the upper pad (2) and the lower pad (6) are made of flexible materials, and the flexible materials comprise silicone rubber, fluororubber, latex and polyurethane rubber.
7. The method for detecting the machining performance of the special fluid abrasive for abrasive grain flow finishing is characterized in that the device in any one of claims 1-6 is adopted to respectively implement abrasive grain flow finishing tests based on all new fluid abrasives and old fluid abrasives under the same pressure and fluid abrasive consumption conditions, the time of the two tests and the quality variation of samples before and after the tests are obtained, and then the fluid abrasive flow performance index zeta and the cutting performance index epsilon are obtained through calculation.
8. The method for detecting the processability of the fluid abrasive special for abrasive grain flow finishing according to claim 7, comprising the steps of:
step 1, test design:
designing the shape and the size of an inner hole of the sample (4), selecting materials, and selecting the working pressure of a machine tool and the dosage of the fluid abrasive according to the characteristics of the fluid abrasive;
step 2, abrasive particle flow finishing processing test based on brand new fluid abrasive materials:
taking a sample (4) and measuring the mass M of the sample before the test by using an electronic balance 1 Then, filling the totally new fluid abrasive into a lower abrasive cylinder (11), assembling the sample (4) with a clamp, and then placing the assembled sample on a machine tool workbench (9);
setting the working pressure of the machine tool according to the design of the step 1, controlling the dosage of the fluid abrasive by setting the processing cycle times, and starting the machine tool;
after the test is finished, record test time T N And the mass M of the tested sample is measured by an electronic balance 1 ’；
Step 3, abrasive flow finishing processing test based on old fluid abrasive:
taking a new sample (4) and measuring the mass M of the sample before the test by using an electronic balance 2 The novel grinding materials in the grinding material cylinder (11) under the machine tool are replaced by the old grinding materials to be tested, and the new sample (4) and the clamp are assembled and then placed on the machine tool workbench (9);
setting the same working pressure and the same machining cycle times of the machine tool as those of the step 2, and starting the machine tool;
testAfter the end, record test time T O And the mass M of the tested sample is measured by an electronic balance 2 ’；
Step 4, data analysis: and (3) calculating the mass change amounts of the samples before and after the test in the step (2) and the step (3), and calculating the fluid abrasive flow performance index zeta and the cutting performance index epsilon by combining the time of the test.
9. The method for detecting the processing performance of the fluid abrasive special for abrasive grain flow finishing according to claim 8, wherein in the step 4, the fluid abrasive flow performance index ζ and the cutting performance index ε are calculated according to the following formulas:
Figure FDA0004003211030000031
wherein T is O Polishing the test time for the abrasive particle stream based on old fluid abrasive;
T N the abrasive particle flow finishing processing test time is based on brand new fluid abrasive;
ΔM O the mass change of the sample before and after the abrasive particle flow finishing test based on the old fluid abrasive;
ΔM N the mass variation of the sample before and after the abrasive particle flow finishing test based on the brand new fluid abrasive;
ΔM O and DeltaM N Calculated using the following formulas:
ΔM N ＝M 1 -M 1 ’
ΔM O ＝M 2 -M 2 ’。
10. the method for detecting the processing performance of the fluid abrasive specially used for abrasive grain flow finishing processing according to claim 8, wherein the sample (4) is made of metal or alloy material, and the hardness of a matrix material and the hardness of an inner hole surface of the sample are not higher than the hardness of hard abrasive grains in the fluid abrasive;
the minimum diameter of the inner hole of the sample (4) is not smaller than 20 times of the maximum diameter of hard particles in the fluid abrasive, the height of the sample (4) is not smaller than 5 times of the minimum diameter of the sample, and the volume of the fluid abrasive (5) used for the abrasive particle flow polishing test is not smaller than 10 times of the volume of the inner hole of the sample (4).
CN202211623922.9A 2022-12-16 2022-12-16 Device and method for detecting machining performance of fluid abrasive special for abrasive grain flow finishing Pending CN116046596A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117169039A (en) * 2023-11-02 2023-12-05 江苏信尚机械制造有限公司 Wear-resistant steel product wear-resistant testing device and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117169039A (en) * 2023-11-02 2023-12-05 江苏信尚机械制造有限公司 Wear-resistant steel product wear-resistant testing device and method
CN117169039B (en) * 2023-11-02 2024-04-05 江苏信尚机械制造有限公司 Wear-resistant steel product wear-resistant testing device and method

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