CN109434660A - A kind of device and its application method along flat test piece thickness direction polishing notch - Google Patents
A kind of device and its application method along flat test piece thickness direction polishing notch Download PDFInfo
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- CN109434660A CN109434660A CN201811484569.4A CN201811484569A CN109434660A CN 109434660 A CN109434660 A CN 109434660A CN 201811484569 A CN201811484569 A CN 201811484569A CN 109434660 A CN109434660 A CN 109434660A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (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)
- Sampling And Sample Adjustment (AREA)
Abstract
本发明公开了一种沿平板试件厚度方向抛光缺口的装置及其使用方法，其中装置包括底座、试件固定机构、摩擦棒、摩擦棒限位机构和驱动机构，试件固定于试件固定机构上，摩擦棒通过摩擦棒限位机构调整与试件的相对位置并固定，最后启动驱动机构对试件的缺口进行抛光；本发明结构简单，操作方便，采用电动机驱动摩擦棒，实现了沿试件厚度方向对缺口表面的快速高效抛光，可获得高质量的符合金相观测级别的缺口表面，以便在试验中研究材料微观结构对小裂纹行为的影响。The invention discloses a device for polishing a notch along the thickness direction of a flat test piece and a using method thereof, wherein the device comprises a base, a test piece fixing mechanism, a friction bar, a friction bar limit mechanism and a driving mechanism, and the test piece is fixed to the test piece. In the mechanism, the friction rod adjusts the relative position of the test piece through the friction rod limiting mechanism and fixes it, and finally starts the driving mechanism to polish the notch of the test piece; the invention has the advantages of simple structure and convenient operation, and the motor is driven by the friction rod to realize the edge Rapid and efficient polishing of the notched surface in the thickness direction of the test piece provides a high-quality notched surface conforming to the metallographic observation level in order to study the influence of the microstructure of the material on the small crack behavior in the test.
Description
Technical field
It is the invention belongs to metal specimen surface mechanical polishing technology field, in particular to a kind of along flat test piece thickness direction
Polish the device and its application method of notch.
Background technique
Fatigue fracture is mechanical mechanism one of main failure mode during military service, and the experimental results show gold
Germinating and extension phase of the most of fatigue life consumption of metal elements in crackle.Crackle, which exists, differs markedly from long crack
Extended attribute, it may be assumed that in long crack threshold stress intensity factor hereinafter, crackle still can extend；In identical stress intensity
Under factor range, the spreading rate of crackle is more much higher than long crack.Therefore, if directlying adopt long crack growth data to containing
Have in the component design of crackle, it will lead to the excessively high estimation to fatigue life.More accurate fatigue life in order to obtain
Prediction technique, it is necessary to germinate and extend mechanism by the crackle that crackle expanding test discloses material.
Crackle expanding test tests more complicated time-consuming than long crack, mostly uses in-situ scanning electron microscopy and surface multiple at present
Type method observes crackle behavior.In-situ scanning electron microscopy high resolution, but since its observation scope is small, it is more difficult to capture crackle
Early stage germinating and propagation behavior, therefore surface replica method is still the widest crackle observation method of current application, this method
It is also Metal Material Fatigue crackle spreading rate testing standard ASTMSTP1149, ASTME647-95a and HB7705-2001 etc.
The method of recommendation.Surface replica method mostly uses greatly the flat test piece with unilateral gap, to surface of test piece especially notch surface
State has very high requirement.In recent years, many scholars have carried out etching pit to test specimen notch under study for action, to obtain notch table
The metallographic structure in face, influence of the research material microstructure to crackle behavior.This requires notch surface not only to remove processing
The defects of scratch, also needs further to reach the bright mirror surface effect for meeting metallographic observation rank.
General polished machine is unable to complete the requirement of polishing notch, and manual grinding and polishing is mostly used in existing research, usually first will
Sand paper is wrapped in a diameter and is slightly less than on the pole of notch diameter, then polishes to notch.This method was both time-consuming and laborious,
And it is difficult to ensure that parallel test specimen notch surface consistency.In metallurgical polishing, generally first using the biggish sand paper of mesh number along one
Determine direction grinding and polishing material surface, is then ground using the lesser sand paper of mesh number along the direction vertical with previous step grinding and polishing direction
It throws, when the thicker polishing scratch that previous step grinding and polishing leaves completely disappears, and new thinner polishing scratch is consistent with current grinding and polishing direction, then
Using the smaller sand paper edge of mesh number and polishing scratch vertical direction grinding and polishing, repeatedly, until notch surface reaches mirror effect.China
The device of polishing notch is disclosed in patent CN205703664U " sample break polishing machine ", but the device can only be along flat test piece
Length direction is polished, and cannot be polished notch along specimen thickness direction, is still unable to satisfy etching pit and want to material surface
It asks.
Summary of the invention
The first object of the present invention is to provide a kind of device that notch can be polished along flat test piece thickness direction, which can
To make up the deficiency for being only capable of polishing notch along piece lengths direction in the prior art, structure is simple and convenient to operate, can be quickly high
Effect ground polishes notch surface along specimen thickness direction, the surface for meeting metallographic observation rank of high quality is obtained, to test
Influence of the middle research material microstructure to crackle behavior.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of device along flat test piece thickness direction polishing notch, including pedestal, test specimen fixed mechanism, friction-bar, rub
Stick position-limit mechanism and driving mechanism are wiped,
The test specimen fixed mechanism includes being symmetrically arranged on the first test specimen fixed station that test specimen is fixed on pedestal and the second examination
Part fixed station, detachable one end for being equipped with the first movable clamping piece and clamping test specimen, institute on the first test specimen fixed station
State the detachable other end for being equipped with the second movable clamping piece and clamping test specimen on the second test specimen fixed station；
The friction-bar includes pole and the sand paper that is wrapped on pole outer wall；
The friction-bar position-limit mechanism includes the second support frame being successively mounted on the base, the first support frame and compresses
Block, first support frame and the second support frame are located at the two sides of test specimen axial direction, and the compact heap in the one side of test specimen towards setting
It is equipped with the internal sleeve for being embedded with compressed spring；The friction-bar is fixed on the first support frame and the second support frame, and on pole
The part for being enclosed with sand paper is fallen into the notch of test specimen top surface；
The driving mechanism includes the motor being mounted on the base and the eccentric wheel that is connected on motor rotary shaft；
The end of described pole one end is contacted with eccentric wheel, and the end insertion sleeve of the pole other end resists compressed spring；
The friction-bar and test specimen are mutually perpendicular to.
As a preferred embodiment of above-mentioned technology, the friction-bar position-limit mechanism further includes threaded rod, threaded rod support
Frame and handwheel, one end of the threaded rod sequentially pass through the threaded hole on threaded rod support frame and compact heap, threaded rod it is another
End connection handwheel；The bottom of the compact heap is provided with guide rail, and the guide rail is installed on the first support frame and threaded rod support frame
Between pedestal on.
As a preferred embodiment of above-mentioned technology, there are two bar shapeds to lead to for the outside setting of the first test specimen fixed station
Hole, two the first fishbolts pass through two strip through-holes and the first movable clamping piece are mounted on test specimen fixed station；Described
There are two strip through-holes for the outside setting of two test specimen fixed stations, and it is living by second that two the second fishbolts pass through two strip through-holes
Dynamic clamping piece is mounted on the second test specimen fixed station b；One end of the test specimen is held on the backboard and of the first test specimen fixed station
Between one movable clamping piece, the other end of test specimen is held between the backboard of the second test specimen fixed station and the second movable clamping piece.
As a preferred embodiment of above-mentioned technology, it is respectively arranged at the semicircle of the first support frame and the second top surface of support frame
Column recesses and the notch of test specimen top surface are located on the same line.
As a preferred embodiment of above-mentioned technology, the first compression piece, pole are provided at the top of first support frame
The semicylinder groove of the first top surface of support frame is fallen into, the first compression piece pushes down pole, and the both ends of pole axial direction pass through one respectively
A first clamping screw fixes the first compression piece and the first support frame；The second compression is provided at the top of second support frame
Piece, pole fall into the semicylinder groove of the second top surface of support frame, and the second compression piece pushes down pole, the both ends difference of pole axial direction
The second compression piece and the second support frame are fixed by second clamping screw.
As a preferred embodiment of above-mentioned technology, described first compresses the cylindrical cavity that piece and the first support frame are formed
Diameter be slightly larger than pole diameter；
As a preferred embodiment of above-mentioned technology, described second compresses the cylindrical cavity that piece and the second support frame are formed
Diameter be slightly larger than pole diameter.
As a preferred embodiment of above-mentioned technology, the sand paper winds two weeks along pole circumferencial direction and is glued by glue
It is attached on pole；The diameter of the rod for being enclosed with sand paper is less than the diameter of test specimen top surface notch.
As a preferred embodiment of above-mentioned technology, the sleeve is cylindrical body, and the natural length of the compressed spring is small
In the length of sleeve, the outer diameter of compressed spring is slightly less than the internal diameter of sleeve, and the internal diameter of compressed spring is greater than diameter of the rod；It is described inclined
Heart wheel side thickness is slightly larger than diameter of the rod.
The second object of the present invention is to provide a kind of using the above-mentioned device along flat test piece thickness direction polishing notch
Application method, this method can simply and easily polish test specimen notch surface along specimen thickness direction.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of application method based on the device along flat test piece thickness direction polishing notch, comprising the following steps:
Step 1 takes test specimen to grinding and polishing, notch upward, by the both ends of test specimen be individually positioned in the first test specimen fixed station and
On second test specimen fixed station, surface of test piece is close to the inner sidewall and backboard of the first test specimen fixed station and the second test specimen fixed station；
Step 2 after first movable clamping piece and the second movable clamping piece are adjacent to surface of test piece, screws the first fishbolt
With the second fishbolt, test specimen is fixed on the first test specimen fixed station and the second test specimen fixed station；
Step 3 winds two weeks along its circumferencial direction sand paper in pole middle position, and is pasted and fixed by glue, obtains
To friction-bar；
Friction-bar is placed on the first support frame and the second support frame by step 4, and the part for being pasted with sand paper is made to fall within examination
In part notch；
First compression piece is placed on the first support frame by step 5, screws the first clamping screw；Second compression piece is placed on
On second support frame, the second clamping screw is screwed, move up and down friction-bar will not；
Step 6, rotation handwheel, by threaded rod by compact heap precession to suitable position, i.e. one end of friction-bar and nature
When compressed spring under state contacts, the other end of friction-bar can be with eccentric wheel side away from the nearest point contact of shaft；
Step 7, starting motor, band movable eccentric wheel rotates, so that friction-bar be driven to polish the indentation, there of test specimen.
As a preferred embodiment of above-mentioned technology, in the step 1, it is placed on the first test specimen fixed station and the second test specimen
Test specimen quantity on fixed station is one or more.
Compared with prior art, the invention has the following advantages:
1, the present invention is fixed test specimen using test specimen fixed station and movable clamping piece, is capable of fixing the examination of different-thickness
Part fixes multiple test specimens, it can be achieved that batch grinding and polishing to test specimen simultaneously.
2, sand paper is wrapped on pole to test specimen grinding and polishing by the present invention, the sand paper of different meshes can be easily replaced, to examination
Part carries out the polishing of different stage, and cost is relatively low.
3, the configuration of the present invention is simple, it is easy to operate, using motor drive friction-bar, avoid conventional manual polishing notch
It is inefficient, compensate for be only capable of in the prior art along specimen length direction polish notch deficiency, realize along specimen thickness direction
Rapidly and efficiently polishing to notch surface can get the notch surface for meeting metallographic observation rank of high quality, to test
Influence of the middle research material microstructure to crackle behavior.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the portion the A sleeve cross-sectional view of Fig. 2；
Fig. 4 is the left view of Fig. 1.
In figure: 1- pedestal, 2- test specimen, the first test specimen of 3a- fixed station, the second test specimen of 3b- fixed station, 4a- the first activity folder
Hold piece, 4b- second movable clamping piece, the first fishbolt of 5a-, the second fishbolt of 5b-, the first support frame of 6a-, 6b- second
Support frame, 7a- first compress piece, 7b- second compresses piece, the first clamping screw of 8a-, the second clamping screw of 8b-, 9- pole, 10-
Sand paper, 11- compact heap, 12- guide rail, 13- threaded rod, 14- threaded rod support frame, 15- handwheel, 16- sleeve, 17- compressed spring,
18- motor, 19- eccentric wheel.
Specific embodiment
Below with reference to embodiment, the present invention will be further explained.
As shown in Figs 1-4, a kind of device along flat test piece thickness direction polishing notch, including the fixed machine of pedestal, test specimen
Structure, friction-bar, friction-bar position-limit mechanism and driving mechanism, the test specimen fixed mechanism include being symmetrically arranged on pedestal 1 to fix
Detachable installation on first test specimen fixed station 3a of test specimen 2 and the second test specimen fixed station 3b, the first test specimen fixed station 3a
There is the first activity clamping piece 4a to clamp one end of test specimen 2, it is detachable on the second test specimen fixed station 3b to be equipped with second
Movable clamping piece 4b clamps the other end of test specimen 2；The friction-bar includes pole 9 and the sand paper that is wrapped on 9 outer wall of pole
10；The friction-bar position-limit mechanism includes the second support frame 6b being successively installed on pedestal 1, the first support frame 6a and compresses
Block 11, the first support frame 6a and the second support frame 6b are located at the axial two sides of test specimen 2, and the compact heap 11 is towards test specimen 2
One side on be provided with the internal sleeve 16 for being embedded with compressed spring 17；The friction-bar is fixed on the first support frame 6a and second
The part that sand paper 10 is enclosed on support 6b, and on pole 9 is fallen into the notch of 2 top surface of test specimen；The driving mechanism includes peace
Loaded on the motor 18 on pedestal 1 and the eccentric wheel 19 being connected in 18 shaft of motor；The end of described 9 one end of pole and partially
Heart wheel 19 contacts, and the end insertion sleeve 16 of 9 other end of pole resists compressed spring 17；The friction-bar and test specimen 2 mutually hang down
Directly.
The friction-bar position-limit mechanism further includes threaded rod 13, threaded rod support frame 14 and handwheel 15, the threaded rod 13
One end sequentially pass through the threaded hole on threaded rod support frame 14 and compact heap 11, the other end of threaded rod 13 connects handwheel 15；
The bottom of the compact heap 11 is provided with guide rail 12, the guide rail 12 be installed on the first support frame 6a and threaded rod support frame 14 it
Between pedestal 1 on.
There are two strip through-hole, two the first fishbolt 5a to pass through two for the outside setting of the first test specimen fixed station 3a
First activity clamping piece 4a is mounted on test specimen fixed station 3 by a strip through-hole；It is set on the outside of the second test specimen fixed station 3b
It sets there are two strip through-hole, two the second fishbolt 5b pass through two strip through-holes and the second activity clamping piece 4b is mounted on the
On two test specimen fixed station 3b；One end of the test specimen 2 is held on the backboard and the first movable clamping piece of the first test specimen fixed station 3a
Between 4a, the other end of test specimen 2 is held between the backboard of the second test specimen fixed station 3b and the second movable clamping piece 4b.
It is respectively arranged at lacking for 2 top surface of semicylinder groove and test specimen of the first support frame 6a and the second top surface support frame 6b
Mouth is located on the same line；The first compression piece 7a is provided at the top of the first support frame 6a, pole 9 falls into the first support
The semicylinder groove of the top surface frame 6a, the first compression piece 7a push down pole 9, and the axial both ends of pole 9 pass through one first respectively
Clamping screw 8a fixes the first compression piece 7a and the first support frame 6a；The second compression is provided at the top of the second support frame 6b
Piece 7b, pole 9 fall into the semicylinder groove of the second top surface support frame 6b, and the second compression piece 7b pushes down pole 9, and pole 9 is axial
Both ends pass through a second clamping screw 8b respectively and fix the second compression piece 7b and the second support frame 6b.
Described first diameter for compressing the cylindrical cavity that piece 7a and the first support frame 6a is formed is slightly larger than the straight of pole 9
Diameter；Described second diameter for compressing the cylindrical cavity that piece 7b and the second support frame 6b is formed is slightly larger than the diameter of pole 9.
The sand paper 10 winds two weeks along 9 circumferencial direction of pole and is pasted on pole 9 by glue；It is enclosed with sand paper 10
9 diameter of pole be less than 2 top surface notch of test specimen diameter.
The sleeve 16 is cylindrical body, and the natural length of the compressed spring 17 is less than the length of sleeve 16, compressed spring
17 outer diameter is slightly less than the internal diameter of sleeve 16, and the internal diameter of compressed spring 17 is greater than 9 diameter of pole；19 lateral thickness of eccentric wheel
Slightly larger than 9 diameter of pole.
A kind of application method based on the device along flat test piece thickness direction polishing notch, comprising the following steps:
Step 1 takes test specimen 2 to grinding and polishing, and notch is individually positioned in the first test specimen fixed station upward, by the both ends of test specimen 2
On 3a and the second test specimen fixed station 3b, the inside of the first test specimen fixed station 3a and the second test specimen fixed station 3b are close in 2 surface of test specimen
Wall and backboard；
Step 2 after first activity clamping piece 4a and the second activity clamping piece 4b are adjacent to 2 surface of test specimen, screws the first folder
Tight bolt 5a and the second fishbolt 5b, test specimen 2 is fixed on the first test specimen fixed station 3a and the second test specimen fixed station 3b；
Step 3 winds two weeks along its circumferencial direction sand paper 10 in 9 middle position of pole, and is pasted and fixed by glue,
Obtain friction-bar；
Friction-bar is placed on the first support frame 6a and the second support frame 6b by step 4, makes the part for being pasted with sand paper 10
It falls in 2 notch of test specimen；
First compression piece 7a is placed on the first support frame 6a by step 5, screws the first clamping screw 8a；Second is compressed
Piece 7b is placed on the second support frame 6b, is screwed the second clamping screw 8b, be moved up and down friction-bar will not；
Step 6, rotation handwheel 15, by threaded rod 13 by 11 precession of compact heap to suitable position, i.e. one end of friction-bar
When contacting with compressed spring 17 under natural conditions, the other end of friction-bar can be connect with 19 side of eccentric wheel away from shaft closest approach
Touching；
Step 7, starting motor 18, band movable eccentric wheel 19 rotate, so that friction-bar be driven to carry out the indentation, there of test specimen 2
Polishing.
As a preferred embodiment of above-mentioned technology, in the step 1, it is placed on the examination of the first test specimen fixed station 3a and second
2 quantity of test specimen on part fixed station 3b is any number, such as one, two or more；In particular, per more test specimens 2,
Then need to increase by one group of first movable clamping piece 4a, the first fishbolt 5a, the second activity clamping piece 4b and the second fishbolt
5b, the back side of a new test specimen 2 are affixed on the back side of the movable clamping piece 4b of one first activity clamping piece 4a and second, load new
One group of first activity clamping piece 4a and the second activity clamping piece 4b be tightly attached to the front of a new test specimen 2, then new family is installed
First fishbolt 5a and the second fishbolt 5.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of device along flat test piece thickness direction polishing notch, including pedestal, test specimen fixed mechanism, friction-bar, friction
Stick position-limit mechanism and driving mechanism, it is characterised in that:
The test specimen fixed mechanism include be symmetrically arranged on the first test specimen fixed station (3a) that test specimen (2) is fixed on pedestal (1) and
Second test specimen fixed station (3b), it is detachable on the first test specimen fixed station (3a) the first movable clamping piece (4a) is installed to press from both sides
One end of test specimen (2) is handled, the detachable second activity clamping piece (4b) that is equipped with presss from both sides on the second test specimen fixed station (3b)
Handle the other end of test specimen (2)；
The friction-bar includes pole (9) and the sand paper (10) that is wrapped on pole (9) outer wall；
The friction-bar position-limit mechanism include successively be installed on pedestal (1) the second support frame (6b), the first support frame (6a),
With compact heap (11), first support frame (6a) and the second support frame (6b) are located at the two sides of test specimen (2) axial direction, the compression
The internal sleeve (16) for being embedded with compressed spring (17) is provided in the one side of block (11) towards test specimen (2)；The friction-bar is fixed
Test specimen (2) are fallen into the part for being enclosed with sand paper (10) on the first support frame (6a) and the second support frame (6b), and on pole (9)
In the notch of top surface；
The driving mechanism includes the motor (18) being installed on pedestal (1) and the bias being connected in motor (18) shaft
It takes turns (19)；
The end of described pole (9) one end is contacted with eccentric wheel (19), and end insertion sleeve (16) of pole (9) other end resists
Compressed spring (17)；The friction-bar and test specimen (2) are mutually perpendicular to.
2. the device according to claim 1 along flat test piece thickness direction polishing notch, it is characterised in that: the friction
Stick position-limit mechanism further includes threaded rod (13), threaded rod support frame (14) and handwheel (15), one end of the threaded rod (13) according to
The other end of the secondary threaded hole on threaded rod support frame (14) and compact heap (11), threaded rod (13) connects handwheel (15)；
The bottom of the compact heap (11) is provided with guide rail (12), and the guide rail (12) is installed on the first support frame (6a) and threaded rod branch
On pedestal (1) between support (14).
3. the device according to claim 1 along flat test piece thickness direction polishing notch, it is characterised in that: described first
There are two strip through-holes for the outside setting of test specimen fixed station (3a), and two the first fishbolts (5a) pass through two strip through-holes will
First movable clamping piece (4a) is mounted on test specimen fixed station (3)；
There are two strip through-hole, two the second fishbolts (5b) to pass through two for the outside setting of the second test specimen fixed station (3b)
Second movable clamping piece (4b) is mounted on the second test specimen fixed station (3b) by a strip through-hole；
One end of the test specimen (2) is held between the backboard of the first test specimen fixed station (3a) and the first movable clamping piece (4a),
The other end of test specimen (2) is held between the backboard of the second test specimen fixed station (3b) and the second movable clamping piece (4b).
4. the device according to claim 1 along flat test piece thickness direction polishing notch, it is characterised in that: be respectively set
It is located in the semicylinder groove of the first support frame (6a) and the top surface the second support frame (6b) and the notch of test specimen (2) top surface same
On straight line.
5. the device according to claim 4 along flat test piece thickness direction polishing notch, it is characterised in that: described first
The first compression piece (7a) is provided at the top of support frame (6a), pole (9) falls into the semicylinder of the top surface the first support frame (6a)
Groove, first, which compresses piece (7a), pushes down pole (9), and the both ends of pole (9) axial direction pass through first clamping screw (8a) respectively
Fix the first compression piece (7a) and the first support frame (6a)；
The second compression piece (7b) is provided at the top of second support frame (6b), pole (9) falls into the top the second support frame (6b)
The semicylinder groove in face, second, which compresses piece (7b), pushes down pole (9), and the both ends of pole (9) axial direction pass through one second respectively
Clamping screw (8b) fixes the second compression piece (7b) and the second support frame (6b).
6. the device according to claim 5 along flat test piece thickness direction polishing notch, it is characterised in that: described first
The diameter for compressing the cylindrical cavity that piece (7a) and the first support frame (6a) are formed is greater than the diameter of pole (9)；
Described second diameter for compressing the cylindrical cavity that piece (7b) and the second support frame (6b) are formed is greater than the straight of pole (9)
Diameter.
7. the device according to claim 1 along flat test piece thickness direction polishing notch, it is characterised in that: the sand paper
(10) it winds two weeks along pole (9) circumferencial direction and is pasted on pole (9) by glue；It is enclosed with the pole of sand paper (10)
(9) diameter is less than the diameter of test specimen (2) top surface notch.
8. the device according to claim 1 along flat test piece thickness direction polishing notch, it is characterised in that: the sleeve
It (16) is cylindrical body, the natural length of the compressed spring (17) is less than the length of sleeve (16), the outer diameter of compressed spring (17)
Less than the internal diameter of sleeve (16), the internal diameter of compressed spring (17) is greater than pole (9) diameter；Eccentric wheel (19) lateral thickness is big
In pole (9) diameter.
9. -8 any user based on the device along flat test piece thickness direction polishing notch according to claim 1
Method, which comprises the following steps:
Step 1 takes test specimen (2) to grinding and polishing, and notch is individually positioned in the first test specimen fixed station upward, by the both ends of test specimen (2)
On (3a) and the second test specimen fixed station (3b), the first test specimen fixed station (3a) and the second test specimen fixed station are close in test specimen (2) surface
The inner sidewall and backboard of (3b)；
Step 2 after first movable clamping piece (4a) and the second movable clamping piece (4b) are adjacent to test specimen (2) surface, screws first
Test specimen (2) is fixed on the first test specimen fixed station (3a) and the second test specimen is solid by fishbolt (5a) and the second fishbolt (5b)
Determine on platform (3b)；
Step 3 is wound with sand paper (10) along its circumferencial direction in pole (9) middle position, and is pasted and fixed by glue, is obtained
Friction-bar；
Friction-bar is placed on the first support frame (6a) and the second support frame (6b) by step 4, makes the portion for being pasted with sand paper (10)
Divide and falls in test specimen (2) notch；
First compression piece (7a) is placed on the first support frame (6a) by step 5, screws the first clamping screw (8a)；By the second pressure
Tight piece (7b) is placed on the second support frame (6b), screws the second clamping screw (8b)；
Step 6, rotation handwheel (15), by threaded rod (13) by compact heap (11) precession to suitable position, i.e., the one of friction-bar
When end is contacted with compressed spring (17) under natural conditions, the other end of friction-bar can be nearest away from shaft with eccentric wheel (19) side
Point contact；
Step 7, starting motor (18), band movable eccentric wheel (19) rotate, thus drive friction-bar to the indentation, there of test specimen (2) into
Row polishing.
10. the application method according to claim 9 based on the device along flat test piece thickness direction polishing notch, special
Sign is, in the step 1, the test specimen (2) being placed on the first test specimen fixed station (3a) and the second test specimen fixed station (3b) is counted
Amount is one or more.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811484569.4A CN109434660B (en) | 2018-12-06 | 2018-12-06 | Device for polishing notch along thickness direction of flat test piece and application method thereof |
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|---|---|---|---|
| CN201811484569.4A CN109434660B (en) | 2018-12-06 | 2018-12-06 | Device for polishing notch along thickness direction of flat test piece and application method thereof |
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| CN109434660B CN109434660B (en) | 2024-12-17 |
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| CN109434660B (en) | 2024-12-17 |
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