CN110303414A - A kind of fatigue coupon axial direction burnishing device and its application method - Google Patents

A kind of fatigue coupon axial direction burnishing device and its application method Download PDF

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Publication number
CN110303414A
CN110303414A CN201910585637.4A CN201910585637A CN110303414A CN 110303414 A CN110303414 A CN 110303414A CN 201910585637 A CN201910585637 A CN 201910585637A CN 110303414 A CN110303414 A CN 110303414A
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CN
China
Prior art keywords
coupon
tired
axial
clamp assemblies
axial movement
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Granted
Application number
CN201910585637.4A
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Chinese (zh)
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CN110303414B (en
Inventor
李宇罡
连国辉
陈东
耿继伟
王斐霏
王浩伟
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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Priority to CN201910585637.4A priority Critical patent/CN110303414B/en
Publication of CN110303414A publication Critical patent/CN110303414A/en
Application granted granted Critical
Publication of CN110303414B publication Critical patent/CN110303414B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0023Other grinding machines or devices grinding machines with a plurality of working posts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00Other grinding machines or devices
    • B24B27/0076Other grinding machines or devices grinding machines comprising two or more grinding tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00Machines 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
    • B24B29/02Machines 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
    • B24B29/04Machines 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 for rotationally symmetrical workpieces, e.g. ball-, cylinder- or cone-shaped workpieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/007Weight compensation; Temperature compensation; Vibration damping
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B41/00Component parts such as frames, beds, carriages, headstocks
    • B24B41/06Work supports, e.g. adjustable steadies
    • B24B41/061Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
    • B24B41/062Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/02Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
    • B24B47/04Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by mechanical gearing only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00Drives or gearings; Equipment therefor
    • B24B47/10Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
    • B24B47/12Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The present invention proposes a kind of tired coupon axial direction burnishing device, including support component, axial movement component, clamp assemblies and polishing assembly, axial movement component and polishing assembly are installed in support component, clamp assemblies are installed on axial movement component, clamp assemblies axial movement is driven by axial movement component, tired coupon is placed on clamp assemblies, and polishing assembly is corresponding with clamp assemblies position, carries out axial polishing treatment to tired coupon by polishing assembly;Axial movement component includes supporting plate, axial guidance, is axially moved driving mechanism, axial guidance and axial movement driving mechanism are installed in support component, supporting plate is installed on axial guidance, and it can be moved along axial guidance, driving mechanism is axially moved to be connected with supporting plate, drive supporting plate mobile by axial movement driving mechanism, clamp assemblies are installed on supporting plate;The plant bulk is small and exquisite, and structure is simple, easy to operate, and polishing efficiency is high, can quickly, effectively realize the axial polishing treatment of tired coupon.

Description

A kind of fatigue coupon axial direction burnishing device and its application method
Technical field
The present invention relates to the machining of metal material axial fatigue coupon and process for treating surface, more particularly to one kind are tired Labor coupon axial direction burnishing device and its application method.
Background technique
The test of Metal Material Fatigue performance is with research for numerous heavy including Aeronautics and Astronautics, automobile, ship etc. Industrial circle is wanted to be of great significance.Fatigue is a kind of pair of material surface quality and the highly sensitive failure mode of state, therefore It needs special low stress polishing process to carry out guarantee test part surface residual stress range and is in low-stress state, and axial surface Roughness is sufficiently low.Currently, the relevant enterprise standard of external aero-engine manufacturer is (for example, GE P1TF79, MSRR 9968, SNECMA etc.) it is required to testing fatigue testpieces and has to pass through axial polishing treatment.NADCAP AC Checklist It is made that similar regulation (including AC Checklist 7101/3 and AC Checklist 7101/7).Metal material axial fatigue The correlation of test is international and domestic standard, (for example, ASTM-E466, GB/T 3075 etc.) also require testpieces to be machined process Last procedure must axially be polished along sample, until sample axial surface roughness is not more than Ra0.2 μm.It is existing There are the great number of issues such as bulky, structure is complicated, with high costs, polishing efficiency is low for tired coupon axial direction burnishing device.Therefore, It is necessary to the tired coupon axial direction burnishing devices of development of new, to overcome drawbacks described above.
Summary of the invention
The object of the present invention is to provide a kind of tired coupon axial direction burnishing device and its application methods, to simplify structure, just In operation, polishing efficiency is promoted.
The present invention is that technical solution used by solving its technical problem is:
A kind of fatigue coupon axial direction burnishing device, including support component, axial movement component, clamp assemblies and polishing group Part, axial movement component and polishing assembly are installed in support component, and clamp assemblies are installed on axial movement component, by axial direction Moving assembly drives clamp assemblies axial movement, and tired coupon is placed on clamp assemblies, polishing assembly and clamp assemblies position pair It answers, axial polishing treatment is carried out to tired coupon by polishing assembly;
Specifically,
Axial movement component includes supporting plate, axial guidance, is axially moved driving mechanism, and axial guidance and axial movement drive Mechanism is installed in support component, and supporting plate is installed on axial guidance, and can be moved along axial guidance, and driving mechanism is axially moved It is connected with supporting plate, drives supporting plate mobile by axial movement driving mechanism, clamp assemblies are installed on supporting plate;
Axial guidance both ends are individually fixed in support component, and guide block, guide block and axial direction are respectively equipped on each axial guidance Rail shapes adaptation, each guide block are both secured to supporting plate bottom surface, move supporting plate plate can by guide block along axial guidance;
Clamp assemblies include strap, mobile clamping plate and adjust guide rail, strap and the fixed peace of adjusting guide rail Loaded on supporting plate top surface, mobile clamping plate, which is installed in, to be adjusted on guide rail, and can be moved along guide rail is adjusted, and guide rail and axial movement group are adjusted The axial guidance of part is parallel to each other, and tired coupon is placed between strap and mobile clamping plate;
Slowspeed machine and chuck are installed on strap, the power output shaft of slowspeed machine is connect with chuck;
Mobile clamping plate is installed with thimble towards chuck side, and mobile clamping plate bottom, which has, adjusts guide bracket, adjusts guide bracket and adjusts Rail shapes adaptation is saved, mobile clamping plate is moved along guide rail is adjusted by the adjusting guide bracket, adjusts in guide bracket and be installed with tight fixed bolt, Guide bracket can will be adjusted to be fixed on adjusting guide rail;
Tired coupon one end is clamped on chuck, and the other end is withstood by thimble, adjusts the tight fixed bolt locking on guide bracket Afterwards, thimble position is fixed, and drives chuck, tired coupon and thimble common rotation by slowspeed machine;
Polishing assembly includes gantry support, rubbing head and preloading spring, and gantry support is by a crossbeam and two root posts Composition, crossbeam are across above clamp assemblies and support component, and rubbing head is connected on crossbeam by preloading spring, below face Gauge length fragment position among tired coupon;
The two root posts of gantry support are inserted into support component respectively, can move up and down the height for adjusting gantry support;
Being axially moved driving mechanism can be used the reciprocating mechanisms such as crank link mechanism, in one embodiment of the present of invention In, being axially moved driving mechanism includes high-speed motor, crank, connecting rod and sliding block, and high-speed motor is fixed in support component, Power output shaft is fixedly connected with crank, and power output shaft and the axial guidance of high-speed motor are mutually perpendicular to, and crank is located at axial Below guide rail, the axis of axis and axial guidance is generally aligned in the same plane, and drives crank rotation by high-speed motor, crank end with Link rotatable connection, is back and forth shaken by crank handle turns connecting rod, and connecting rod end and sliding block are rotatablely connected, and sliding block is fixed on supporting plate bottom Face is moved back and forth by connecting rod band movable slider and supporting plate;
In one embodiment of the invention, support component includes a pair of lateral fagging, a pair of axial fagging and one piece of bottom Plate is parallel to each other between lateral fagging, is fixed on bottom plate, and is mutually perpendicular to the axial guidance of axial movement component, axis Direction guiding rail both ends are individually fixed in lateral fagging inner wall;
It is parallel to each other, is fixed on bottom plate between axial fagging, and be mutually perpendicular to lateral fagging, on the outside of axial fagging It is installed with inserting groove, inserting groove is adapted to the column of gantry support, and inserting groove outer wall is installed with positioning bolt.
The application method of above-mentioned fatigue coupon axial direction burnishing device, comprising the following steps:
(1) tired coupon one end is clipped on chuck;
(2) it moves mobile clamping plate along guide rail is adjusted, until thimble withstands the tired coupon other end, it is solid to screw tight fixed bolt Surely the position of clamping plate is moved;
(3) gantry support is moved down, until rubbing head is pressed in the surface of gauge length section among tired coupon by preloading spring On, screw the height of the fixed gantry support of positioning bolt;
(4) start high-speed motor, tired coupon is made to carry out axial high speed linear reciprocating motion;
(5) start slowspeed machine, tired coupon is made to carry out circumferential low-speed rotation;
(6) after the completion of polishing, successively stop high-speed motor and slowspeed machine, unclamp positioning bolt, move up gantry support, pine Tight fixed bolt is opened, mobile clamping plate is moved back, thimble and tired coupon is detached from, removes tired coupon, check tired coupon surface Roughness and residual stress, meet the requirements, and terminate to polish, and step (1)~(5) are repeated if being unsatisfactory for requiring, and want until meeting It asks.
In the present invention, the fatigue coupon is cylindrical body, and cylindricity tolerance is not more than 0.01mm in cylindrical body length range, It is not more than Ra1.6 μm before the polishing of cylindrical face surface roughness, Ra0.2 μm is not more than after polishing;
The revolving speed of the high-speed motor is not less than 600r/min;
The revolving speed of the slowspeed machine is not higher than 5r/min;
The slowspeed machine, chuck, tired coupon and the whole of thimble composition are better than 0.005mm/ in axial concentricity mm。
The present invention has the advantages that
1. the fatigue coupon axial direction burnishing device converts folder for the continuous rotation of high-speed motor using slider-crank mechanism The axial high speed linear reciprocating motion of component is held, while driving tired coupon slow between chuck and thimble using slowspeed machine The axial high speed of the tired coupon back and forth compound motion with circumferential low speed rotation is easily realized in rotation, quick in conjunction with rubbing head Realize that tired coupon axially polishes;
2. by adjusting gantry support height combination preloading spring, simplicity, quickly adjustment rubbing head and tired coupon Contact force;
3. multiple stations are arranged, the axial polishing treatment of multiple tired coupons can be carried out simultaneously, and polishing efficiency significantly improves;
4. the plant bulk is small and exquisite, structure is simple, easy to operate, and operation and maintenance is low in cost, and polishing efficiency is high, for Quickly, effectively realize that the axial polishing treatment of tired coupon has very high practical value.
Detailed description of the invention
Fig. 1 is the top structure schematic diagram of tired coupon axial direction burnishing device proposed by the present invention;
Fig. 2 is the bottom substance schematic diagram of the fatigue coupon axial direction burnishing device;
Fig. 3 is the structural schematic diagram of support component.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Diagram and specific embodiment are closed, the present invention is further explained.
Embodiment 1:
As shown in FIG. 1 to 3, tired coupon axial direction burnishing device proposed by the present invention includes support component, axial movement Component, clamp assemblies and polishing assembly, axial movement component and polishing assembly are installed in support component, clamp assemblies installing In on axial movement component, clamp assemblies axial movement is driven by axial movement component, tired coupon is placed on clamp assemblies, is thrown Optical assembly is corresponding with clamp assemblies position, carries out axial polishing treatment to tired coupon by polishing assembly;
Specifically, axial movement component includes supporting plate 1, axial guidance 2, is axially moved driving mechanism.Axial guidance 2 and axis It is installed in support component to motion driving mechanism, supporting plate 1 is installed on axial guidance 2, and can be moved along axial guidance 2, axis It is connected to motion driving mechanism with supporting plate 1, drives supporting plate 1 mobile by axial movement driving mechanism, clamp assemblies are installed in supporting plate 1 On;
2 both ends of axial guidance are individually fixed in support component, and guide block 3, guide block 3 and axis are respectively equipped on axial guidance 2 2 shape adaptation of direction guiding rail, guide block 3 is fixed on 1 bottom surface of supporting plate, and can move along axial guidance 2;
Being axially moved driving mechanism includes high-speed motor 4, crank 5, connecting rod 6 and sliding block 7.High-speed motor 4 is fixed on branch On support component, power output shaft is fixedly connected with crank 5, and the power output shaft and axial guidance 2 of high-speed motor 4 mutually hang down Directly, crank 5 is located at 2 lower section of axial guidance, and the axis of axis and axial guidance 2 is generally aligned in the same plane, is driven by high-speed motor 4 Crank 5 rotates, and 5 end of crank and connecting rod 6 are rotatablely connected, and drives connecting rod 6 to move back and forth by crank 5,6 end of connecting rod and sliding block 7 Rotation connection, sliding block 7 are fixed on 1 bottom surface of supporting plate, are moved back and forth by connecting rod 6 with movable slider 7 and supporting plate 1;
Clamp assemblies include strap 8, mobile clamping plate 9, adjust guide rail 10, and strap 8 and adjusting guide rail 10 are solid Dingan County is loaded on 1 top surface of supporting plate, and mobile clamping plate 9, which is installed in, to be adjusted on guide rail 10, and can move along guide rail 10 is adjusted.Adjust guide rail 10 It is parallel to each other with the axial guidance 2 of axial movement component, tired coupon 11 is placed between strap 8 and mobile clamping plate 9;
Slowspeed machine 14 is installed on strap 8, the power output shaft of slowspeed machine 14 is connect with chuck 12;
Mobile clamping plate 9 is installed with thimble 13 towards 12 side of chuck, and bottom, which has, adjusts guide bracket 15, adjusts guide bracket 15 and adjusts 10 shape adaptation of guide rail is saved, mobile clamping plate 9 can move along guide rail 10 is adjusted by adjusting guide bracket 15, adjust and be installed on guide bracket 15 Tight fixed bolt 16 can will adjust guide bracket 15 and be fixed on adjusting guide rail 10;
Tired 11 one end of coupon is clamped on chuck 12, and the other end is withstood by thimble 13, and then locking adjusts guide bracket 15 On tight fixed bolt 16, fixed 13 position of thimble, slowspeed machine 14 drives chuck 12, tired coupon 11 and thimble 13 to turn jointly It is dynamic;
Support component includes a pair of lateral fagging 19, a pair of axial fagging 20 and one piece of bottom plate 25, between lateral fagging 19 It is parallel to each other, is fixed on bottom plate 25, and be mutually perpendicular to the axial guidance 2 of axial movement component, 2 both ends of axial guidance point It is not fixed on lateral 19 inner wall of fagging;
It is parallel to each other, is fixed on bottom plate 25 between axial fagging 20, and be mutually perpendicular to lateral fagging 19, it is axial to support It is installed with inserting groove 22 on the outside of plate 20, is installed with positioning bolt 23 on 22 outer wall of inserting groove;
Polishing assembly includes gantry support, rubbing head 18 and preloading spring 24, and gantry support has a crossbeam 17 and two Column 21 forms, and crossbeam 17 is across above clamp assemblies and support component, and rubbing head 18 is connected to cross by preloading spring 24 On beam 17, gauge length fragment position among tired coupon below face;
The two root posts 21 of gantry support are inserted into respectively in the inserting groove 22 in 20 outside of support component axial direction fagging, can be upper and lower It is mobile to adjust gantry support height;
It adjusts gantry support height and is withstood among tired coupon on the surface of gauge length section to rubbing head 18 by preloading spring 24, Positioning bolt 23 on 20 outside inserting groove of locking support component axial direction fagging, 22 outer wall, fixed gantry support height, by polishing The first 18 pairs intermediate gauge length section surfaces of tired coupon 11 being placed on clamp assemblies carry out axial polishing treatment.
The application method of above-mentioned fatigue coupon axial direction burnishing device, comprising the following steps:
(1) tired 11 one end of coupon is clipped on chuck 12;
(2) it moves mobile clamping plate 9 along guide rail 10 is adjusted, until thimble 13 withstands tired 11 other end of coupon, screws tight Determine the position of the fixed mobile clamping plate 9 of bolt 16;
(3) gantry support is moved down, until rubbing head 18 is pressed in the intermediate gauge length section of tired coupon 11 by preloading spring 24 Surface on, screw the height of the fixed gantry support of positioning bolt 23;
(4) start high-speed motor 4, tired coupon 11 is made to carry out axial high speed linear reciprocating motion;
(5) start slowspeed machine 14, tired coupon 11 is made to carry out circumferential low-speed rotation;
(6) after the completion of polishing, successively stop high-speed motor 4 and slowspeed machine 14, unclamp positioning bolt 23, move up gantry branch Frame unclamps tight fixed bolt 16, moves back mobile clamping plate 9, is detached from thimble 13 and tired coupon 11, removes tired coupon 11, check The roughness and residual stress on tired 11 surface of coupon, meet the requirements, terminate to polish, and repeat step (1) if being unsatisfactory for requiring ~(5), until meeting the requirements.
In the present embodiment, the fatigue coupon 11 is cylindrical body, and cylindricity tolerance is not more than in cylindrical body length range 0.008mm is Ra1.2 μm before the polishing of cylindrical face surface roughness, is Ra0.15 μm after polishing;
The revolving speed of the high-speed motor 4 is 650r/min;
The revolving speed of the slowspeed machine 14 is 2r/min;
The whole concentricity in axial direction that the slowspeed machine 14, chuck 12, tired coupon 11 and thimble 13 form is better than 0.003mm/mm。
The fatigue coupon axial direction burnishing device converts fatigue for the continuous rotation of high-speed motor using slider-crank mechanism The axial high speed of coupon moves back and forth, and realizes and polishes to the axial direction of tired coupon;Tired coupon is driven using slowspeed machine simultaneously It is slowly rotated between chuck and thimble, the adjustment of realization degree fatigue coupon circumferential position, so that rubbing head is to entire tired coupon Surface is processed by shot blasting;The plant bulk is small and exquisite, and structure is simple, and easy to operate working service is low in cost, and polishing efficiency is high, There is very high practical value for quick, effective axial polishing treatment for realizing tired coupon.
Embodiment of above only technical concepts and features to illustrate the invention, its object is to allow those skilled in the art Member understands the contents of the present invention and is implemented, and it is not intended to limit the scope of the present invention, all spiritual according to the present invention The equivalent change or modification that essence is done, should be covered by the scope of protection of the present invention.

Claims (4)

1. a kind of fatigue coupon axial direction burnishing device, it is characterised in that:
Including support component, axial movement component, clamp assemblies and polishing assembly, axial movement component and polishing assembly are installed In in support component, clamp assemblies are installed on axial movement component, drive clamp assemblies axial movement by axial movement component, Tired coupon is placed on clamp assemblies, and polishing assembly is corresponding with clamp assemblies position, carries out axis to tired coupon by polishing assembly To polishing treatment;
Axial movement component includes supporting plate, axial guidance, is axially moved driving mechanism, axial guidance and axial movement driving mechanism It is installed in support component, supporting plate is installed on axial guidance, and can be moved along axial guidance, and driving mechanism and support are axially moved Plate linking drives supporting plate mobile by axial movement driving mechanism, and clamp assemblies are installed on supporting plate;
Axial guidance both ends are individually fixed in support component, and guide block, guide block and axial guidance are respectively equipped on each axial guidance Shape adaptation, each guide block are both secured to supporting plate bottom surface, move supporting plate plate can by guide block along axial guidance.
2. a kind of tired coupon axial direction burnishing device according to claim 1, it is characterised in that:
Clamp assemblies include strap, mobile clamping plate and adjust guide rail, and strap and adjusting guide rail are fixedly installed in Supporting plate top surface, mobile clamping plate, which is installed in, to be adjusted on guide rail, and can be moved along guide rail is adjusted, and is adjusted guide rail and is moved axially component Axial guidance is parallel to each other, and tired coupon is placed between strap and mobile clamping plate;
Slowspeed machine and chuck are installed on strap, the power output shaft of slowspeed machine is connect with chuck;
Mobile clamping plate is installed with thimble towards chuck side, and mobile clamping plate bottom, which has, adjusts guide bracket, adjusts guide bracket and leads with adjusting Rail shape adaptation, mobile clamping plate are moved along guide rail is adjusted by the adjusting guide bracket, adjust in guide bracket and be installed with tight fixed bolt, can be by Guide bracket is adjusted to be fixed on adjusting guide rail;
Tired coupon one end is clamped on chuck, and the other end is withstood by thimble, after adjusting the tight fixed bolt locking on guide bracket, top Pin position is fixed, and drives chuck, tired coupon and thimble common rotation by slowspeed machine.
3. a kind of tired coupon axial direction burnishing device according to claim 1, it is characterised in that:
Polishing assembly includes gantry support, rubbing head and preloading spring, and gantry support is made of a crossbeam and two root posts, Crossbeam is across above clamp assemblies and support component, and rubbing head is connected on crossbeam by preloading spring, fatigue below face Gauge length fragment position among coupon;
The two root posts of gantry support are inserted into support component respectively, can move up and down the height for adjusting gantry support.
4. the application method of tired coupon axial direction burnishing device according to claim, which is characterized in that including following step It is rapid:
(1) tired coupon one end is clipped on chuck;
(2) it moves mobile clamping plate along guide rail is adjusted, until thimble withstands the tired coupon other end, screws that tight fixed bolt is fixed to be moved The position of dynamic clamping plate;
(3) gantry support is moved down, until rubbing head is pressed in rotation among tired coupon on the surface of gauge length section by preloading spring The height of the tight fixed gantry support of positioning bolt;
(4) start high-speed motor, tired coupon is made to carry out axial high speed linear reciprocating motion;
(5) start slowspeed machine, tired coupon is made to carry out circumferential low-speed rotation;
(6) after the completion of polishing, successively stop high-speed motor and slowspeed machine, unclamp positioning bolt, move up gantry support, unclamp tight Determine bolt, move back mobile clamping plate, is detached from thimble and tired coupon, removes tired coupon, check the coarse of tired coupon surface Degree and residual stress, meet the requirements, terminate to polish, and step (1)~(5) are repeated if being unsatisfactory for requiring, until meeting the requirements.
CN201910585637.4A 2019-07-01 2019-07-01 Axial polishing device for fatigue test bar and using method thereof Active CN110303414B (en)

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CN110303414B CN110303414B (en) 2021-06-29

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Cited By (1)

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CN111775028A (en) * 2020-06-24 2020-10-16 武汉钢铁有限公司 Polishing device and polishing method for fatigue test sample of metal sheet

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CN101357490A (en) * 2008-09-01 2009-02-04 沈阳建筑大学 Irregular stone multifunctional composite processing center with double five-axle linkage system
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