CN209215143U - A kind of high speed single-point scratching experimental rig - Google Patents
A kind of high speed single-point scratching experimental rig Download PDFInfo
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- CN209215143U CN209215143U CN201821611946.1U CN201821611946U CN209215143U CN 209215143 U CN209215143 U CN 209215143U CN 201821611946 U CN201821611946 U CN 201821611946U CN 209215143 U CN209215143 U CN 209215143U
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Abstract
The utility model discloses a kind of high speed single-points to scratch experimental rig, and multilayered structure grinding wheel is dispersed with the abrasive material of multilayer different-grain diameter along the axial direction of grinding wheel base body.Wheel face is equipped with groove between layers, installs diamond penetrator in groove；Dynamometer is fixed on the workbench of high-speed plane grinding machine；Sample is fixed on dynamometer by fixture clamping, specimen surface is roughly ground using multilayered structure grinding wheel, accurate and polishing, to obtain smooth circular arc concave surface identical with wheel face curvature, diamond penetrator is mounted in the groove threaded hole of multilayered structure grinding wheel, by the high speed rotation and axial feed motion of grinding wheel, specimen surface after a polish generates the scratch of fixed cutting-in.Dynamometer obtains sample by signal amplification and data acquisition and scratches force data.The utility model can realize the high speed single-point scratching test of fixed cutting-in, and device is simple, easy to operate, be of great significance to research high-speed grinding Material Removal Mechanism.
Description
Technical field
The utility model relates to Principle of Grinding and Cutting experimental study fields, and in particular to a kind of device of single-point high speed scratching.
Background technique
Grinding is used as a kind of common high-efficiency and precision processing method, is widely used in metal, stone material, ceramics, hard and closes
The Precision Machining of a variety of materials such as gold, optical glass.Grinding is a complicated process, be the countless minute abrasives of wheel face with
The process of workpiece surface interaction, during which the factors such as abrasive grain form, contact condition, action time are interweaved, very big ground resistance
The understanding to grinding plus process is hindered.Grinding process in order to better understand discloses removing material cutting mechanisms, Ohbuch i
Y. single abrasive particle scratching test has been carried out earliest with Matsuo T., single abrasive particle scratching test method is widely used in later
Study removing material cutting mechanisms.
Single-point scratching test, which is generally divided into, becomes cutting-in and fixed two kinds of cutting-in, and pendulum model scratching is a kind of typical change cutting-in
Scratch test method.It is secured the particles on swing rod or ring flange, drives abrasive grain incision by swing rod or ring flange rotation
Specimen surface simultaneously leaves, to simulate the Micro cutting Process of wheel face single abrasive particle.The advantages of pendulum model scratching test method, exists
In obtaining higher scratching speed using high speed grinding machine, disadvantage is exactly that cannot obtain the stabilization cutting process of fixed cutting-in,
This is unfavorable to research removing material cutting mechanisms.In order to carry out the single abrasive particle scratching test of fixed cutting-in, generally use
Linear motor drives diamond penetrator to carry out straight line scratching, but the problem of this method maximum under the conditions of constant pressure or permanent feeding
It is that speed is too low, it is difficult to reach the requirement of grinding speed, especially high-speed grinding.
In order to obtain the high speed single abrasive particle scratching test in fixed cutting-in, a kind of patent " single abrasive particle high speed
Continuous scratching testing machine machine application " (Patent No. CN105717030B) using electro spindle drive disk-like sample to rotate, abrasive grain
With certain cutting-in radial feed, the spiral scratch to form fixed cutting-in is scratched in specimen surface.According to the revolving speed of electro spindle, match
Large-sized plate-like workpiece is closed, scratching speed can be promoted to tens metre per second (m/s)s, but whole device needs are matched dedicated
Equipment, it is desirable that specimen size is sufficiently large, and specimen surface flatness requirement is high.For small-sized blocky sample, scratching test is carried out
It is more difficult, high scratching speed is in addition obtained, the Work piece rotary disc high speed rotation being relatively large in diameter, end face run-out is difficult to control,
It therefore, to obtain stable cutting-in more difficult when high speed scratches.
In order to carry out the single abrasive particle scratching test of stable cutting-in at high speeds, this patent is proposed using using high speed
Precision grinder is first roughly ground specimen surface using multilayered structure grinding wheel, accurate and polishing, bent with wheel face to obtain
The identical smooth circular arc concave surface of rate then using the high speed rotary motion for the diamond penetrator installed on grinding wheel, and combines lathe
Axial feed motion, can specimen surface generate stablize cutting-in scratch.
Utility model content
The purpose of the utility model is to provide a kind of high speed single-points to scratch device, is reached by the utility model and is ground to single
The scratching test of grain high speed, fixed cutting-in and fixed speed.
The technical solution that the utility model solves the above problems is:
The utility model provides a kind of high speed single-point scratching experimental rig, comprising: multilayered structure grinding wheel, high-speed plane mill
Bed, dynamometer, fixture and sample；
The high-speed plane grinding machine includes workbench and feed system, realizes workbench relative to the axial, radial of grinding wheel
And tangential admission；
The multilayered structure grinding wheel is dispersed with the grinding layer of multilayer different-grain diameter, grinding layer and mill along the axial direction of grinding wheel base body
It cuts and is equipped with groove between layer, 3 symmetrical threaded holes are equipped in groove, for installing diamond penetrator；The dynamometer
It is fixed on the workbench of high-speed plane grinding machine；The sample is fixed on dynamometer by fixture clamping；
Specimen surface is roughly ground by the grinding layer of multilayered structure grinding wheel, accurate and polishing, to obtain and grinding wheel table
The identical smooth circular arc concave surface of face curvature；By the high speed rotation and axial feed motion of grinding wheel, so that diamond penetrator is being thrown
Specimen surface after light generates the scratch of fixed cutting-in；The dynamometer obtains sample scratching by signal amplification and data acquisition
Force data.
In a preferred embodiment: the grinding layer is three layers, respectively coarseness grinding layer, smart granularity grinding layer and throwing
Photosphere.
In a preferred embodiment: the wear particle size and material property of the grinding layer of the multilayer different-grain diameter are variable, with
Obtain different degrees of specimen surface.
In a preferred embodiment: there are many angles of fixed diamond pressure head for groove, to carry out the scratching of multiple angles
Test.
In a preferred embodiment: single diamond penetrator can be installed on the groove, carry out single abrasive particle scratching examination
It tests；
Or more staggered diamond penetrators are installed on the groove, for scratching interference test；
Or the axial feed by grinding machine, realize that the controllable spacing of same diamond penetrator repeatedly interferes scratching to be tried
It tests.
In a preferred embodiment: further include acoustic emission sensor or high-speed camera, for high speed scratching process into
Row observation.
The beneficial effects of the utility model are:
1, the utility model obtains good concave circular arcs surface using the multilayered structure grinding wheel processing of different grinding levels,
Cooperate high speed grinding machine to realize that the single-point high speed of fixed cutting-in is non-interfering and interfere scratching test, can be used to observe under different cutting-ins
High speed is accurate to stablize scratching process.
2, the utility model uses multilayered structure grinding wheel, cooperates high-precision high-speed grinding machine, fast can accurately obtain height
The finished surface of precision controls to precise high-efficiency abrasive grain cutting-in and scratching speed.
3, the utility model can be used for probing into the high-speed grinding mechanism of different materials and the mechanism of progress high-speed cutting is ground
Study carefully.
4, the utility model can be used for probing into the abrasion mechanism of abrasive grain on the tool under high-speed grinding and high-speed cutting.
Detailed description of the invention
Fig. 1 is the overall schematic that the utility model high speed single-point scratches device；
Fig. 2 is the partial enlarged view of Fig. 1；
Fig. 3 is the structural schematic diagram of multilayered structure grinding wheel；
Fig. 4 1. -4. be variation schematic diagram of the sample after device is processed；
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
Shown in Figure 1, a kind of high speed single-point scratching experimental rig includes multilayered structure grinding wheel 1, high-speed plane grinding machine 2, surveys
Power instrument 3, fixture 4 and sample 5.Described its feature of high-speed plane grinding machine 2 includes workbench and feed system, and workbench may be implemented
Relative to grinding wheel 1 axial direction, radially and tangentially feed；The multilayered structure grinding wheel 1 it is characterized in that along grinding wheel base body 11 axis
To the grinding layer for being dispersed with multilayer different-grain diameter, grinding layer is three in the present embodiment, respectively coarseness grinding layer 12, smart grain
Spend grinding layer 13 and polishing layer 14.Grinding wheel 1 is mounted on grinding machine 2, may be implemented by the axial feed of grinding machine 2 to sample 5
Corase grinding, fine grinding and the polishing on surface.
It is equipped with groove between grinding layer and grinding layer, 3 symmetrical threaded holes are equipped in groove, for installing Buddha's warrior attendant
Stone pressure head 15；The dynamometer 3 is fixed on the workbench of high-speed plane grinding machine 2；The sample 5 is fixed by 4 clamping of fixture
In on dynamometer 3,5 surface of sample is roughly ground using multilayered structure grinding wheel 1 first, accurate and polishing, to obtain and grinding wheel 1
Diamond penetrator 15, is then mounted on the groove threaded hole of multilayered structure grinding wheel 1 by the identical smooth circular arc concave surface of surface curvature
In, by the high speed rotation and axial feed motion of grinding wheel 1, so that 5 surface of sample of diamond penetrator 15 after a polish generates
The scratch of fixed cutting-in.The dynamometer 3 obtains sample 5 by signal amplification and data acquisition and scratches force data.
According to actual experiment needs, the wear particle size of the grinding layer of axial multilayer different-grain diameter on multilayered structure grinding wheel 1
It can change with material property, to obtain different degrees of 5 surface of sample；It can be there are many fixed diamond pressure head 15 on groove
Angle, with carry out multiple angles scratching test.
Further, scratching speed can arbitrarily select within the scope of 2 maximum speed of high speed grinding machine, and the setting for scratching depth can
It is arranged by the feeding of grinding machine, the precision for scratching depth depends on the feed accuracy of high speed grinding machine 2.
Single diamond penetrator 15 can be installed on multilayered structure grinding wheel 1, carry out single abrasive particle scratching test, it is also mountable
More staggered diamond penetrators 15, for scratching interference test；Or the axial feed by grinding machine 2, it can also realize same
The controllable spacing of diamond penetrator 15 repeatedly interferes scratching to be tested.
Acoustic emission sensor or high-speed camera can be added according to actual needs, for carrying out to high speed scratching process
Observation.
The test method of above-mentioned high speed single-point scratching experimental rig, includes the following steps:
Step 1, multilayered structure grinding wheel 1 is mounted on high speed grinding machine 2, and adjusts dynamic balancing；
Step 2, sample 5 is fixed on dynamometer 3 using fixture 4；
Step 3, dynamometer 3 is fixed on the feeding platform of grinding machine 2；
Step 4,2 main axis of grinding machine drives grinding wheel 1 to rotate, and control feeding makes the alignment examination of 1 coarseness grinding layer 12 of grinding wheel
Sample 5 carries out the corase grinding on surface, the concave circular arcs face roughly ground to sample 5；
Step 5, by the axial feed of grinding machine 2, the fine granularity grinding layer 13 of grinding wheel 1 is arrived in replacement, to corase grinding arc surface into
Row fine grinding；
Step 6, by the axial feed of grinding machine 2, replacement is arrived the polishing layer 14 of grinding wheel 1, is thrown to arc surface after fine grinding
Light obtains smooth circular arc concave surface identical with grinding wheel curvature；
Step 7, diamond penetrator 15 is installed on grinding wheel 1, to knife, setting scratching depth and grinding wheel after adjusting dynamic balancing
Revolving speed, carries out to the high speed of 5 arc surface of sample scratching, by dynamometer 3 by sample stress signal collection into computer.
Step 8, it is fed by control grinding machine 2, pressure head is exited.
The preferable specific embodiment of the above, only the utility model, but the design concept of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, utilizes this design
The change that unsubstantiality is carried out to the utility model belongs to the behavior for invading scope of protection of the utility model.
Claims (6)
1. a kind of high speed single-point scratches experimental rig, characterized by comprising: multilayered structure grinding wheel, high-speed plane grinding machine, dynamometry
Instrument, fixture and sample；
The high-speed plane grinding machine includes grinding wheel, workbench and feed system, realizes workbench relative to the axial, radial of grinding wheel
And tangential admission；
The multilayered structure grinding wheel is dispersed with the grinding layer of multilayer different-grain diameter, grinding layer and grinding layer along the axial direction of grinding wheel base body
Between be equipped with groove, 3 symmetrical threaded holes are equipped in groove, for installing diamond penetrator；The dynamometer is fixed
On the workbench of high-speed plane grinding machine；The sample is fixed on dynamometer by fixture clamping；
Specimen surface is roughly ground by the grinding layer of multilayered structure grinding wheel, accurate and polishing, it is bent with wheel face to obtain
The identical smooth circular arc concave surface of rate；By the high speed rotation and axial feed motion of grinding wheel, so that diamond penetrator is after a polish
Specimen surface generate the scratch of fixed cutting-in；The dynamometer obtains sample by signal amplification and data acquisition and scratches power number
According to.
2. a kind of high speed single-point according to claim 1 scratches experimental rig, it is characterised in that: the grinding layer is three
Layer, respectively coarseness grinding layer, smart granularity grinding layer and polishing layer.
3. a kind of high speed single-point according to claim 1 scratches experimental rig, it is characterised in that: the multilayer different-grain diameter
Grinding layer wear particle size and material property it is variable, to obtain different degrees of specimen surface.
4. a kind of high speed single-point according to claim 1 scratches experimental rig, it is characterised in that: there are many fixed gold for groove
The angle of hard rock pressure head, to carry out the scratching test of multiple angles.
5. a kind of high speed single-point according to claim 1 scratches experimental rig, it is characterised in that: can pacify on the groove
Single diamond penetrator is filled, single abrasive particle scratching test is carried out；
Or more staggered diamond penetrators are installed on the groove, for scratching interference test；
Or the axial feed by grinding machine, realize that the controllable spacing of same diamond penetrator repeatedly interferes scratching to be tested.
6. a kind of high speed single-point according to claim 1 scratches experimental rig, it is characterised in that: further include voice sending sensor
Device or high-speed camera, for being observed to high speed scratching process.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821611946.1U CN209215143U (en) | 2018-09-30 | 2018-09-30 | A kind of high speed single-point scratching experimental rig |
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| CN201821611946.1U CN209215143U (en) | 2018-09-30 | 2018-09-30 | A kind of high speed single-point scratching experimental rig |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982274A (en) * | 2018-09-30 | 2018-12-11 | 华侨大学 | A kind of high speed single-point scratching experimental rig and test method |
| US11867053B2 (en) | 2020-11-25 | 2024-01-09 | Saudi Arabian Oil Company | Shear head device |
-
2018
- 2018-09-30 CN CN201821611946.1U patent/CN209215143U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108982274A (en) * | 2018-09-30 | 2018-12-11 | 华侨大学 | A kind of high speed single-point scratching experimental rig and test method |
| US11867053B2 (en) | 2020-11-25 | 2024-01-09 | Saudi Arabian Oil Company | Shear head device |
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