CN106272025A - The fixture of a kind of revolving body workpieces spinning abrasive Flow polishing and method for designing thereof - Google Patents

The fixture of a kind of revolving body workpieces spinning abrasive Flow polishing and method for designing thereof Download PDF

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Publication number
CN106272025A
CN106272025A CN201610783959.6A CN201610783959A CN106272025A CN 106272025 A CN106272025 A CN 106272025A CN 201610783959 A CN201610783959 A CN 201610783959A CN 106272025 A CN106272025 A CN 106272025A
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Prior art keywords
runner
workpiece
mould
angle
axis
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CN201610783959.6A
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CN106272025B (en
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高航
魏海波
彭灿
王宣平
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Dalian University of Technology
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Dalian University of Technology
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Classifications

    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
    • B24B31/116—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure
    • 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
    • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
    • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
    • 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
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material

Abstract

The invention discloses fixture and the method for designing thereof of a kind of revolving body workpieces spinning abrasive Flow polishing, described fixture includes that clip base and mould, described mould layering are distributed in clip base；The upper cover plate of described clip base and lower cover all have multiple runner through hole；Described clip base for positioning and support the pressure of outside lathe to mould；Described mould includes that runner upper plate and runner lower plate, described runner upper plate and runner lower plate make-up constitute runner, for placing workpiece to be processed；Described runner upper plate and runner lower plate use the material that hardness is less to make.The present invention proposes the installation way without clamping, by size and the angle of inclination of wall of given mold runner, limits the motion of workpiece, solves the problem of non-clamping point because of all polishings of workpiece to be machined needs.The present invention, relative to the abrasive flow machining method rotated without acceptance of persons, improves Surface Machining uniformity, reduces surface roughness, reduce production cost.

Description

The fixture of a kind of revolving body workpieces spinning abrasive Flow polishing and method for designing thereof
Technical field
The present invention relates to the surface finishing technology of revolving body workpieces, a kind of mill being applicable to revolving body workpieces Grain stream finishing method.
Background technology
To being similar to the surface finishing of the revolving body workpieces such as bullet, bearing rotor, have that manufacturing batch is big, surface quality Requiring high, the revolving body workpieces surface oxide layer processed through processing methods such as casting, die casting is thicker, surface lacks Fall into relatively big, and its circularity and cylindricity are required higher, therefore to Surface Machining uniformity by normal use of revolving body workpieces Having the highest requirement with removal amount, so traditional processing method has, processing cost is high, efficiency is low, uniformity is difficult to ensure that Defect.
The existing polishing technology to revolving body workpieces typically more uses the finishing method such as chemical polishing, light decorations polishing, is adopted Burnishing device automaticity relatively low, it is impossible to meet the processing characteristic that manufacturing batch is big, thus improve processing cost, this Outer poor to the oxide layer on surface and the removal ability of defect, even produce new oxide layer and defect.
Abrasive Flow (Abrasive FlowMachining is called for short AFM) is adapted to complex-curved surface finishing, and There is the features such as working (machining) efficiency is high, processing cost is low.Use traditional abrasive Flow Machining method that revolving body workpieces is carried out finishing Although processing can be good at desurfacing and defect, but removes uneven to the material of revolving body workpieces, affect workpiece Circularity and cylindricity, and then affect the normal use of workpiece.Additionally use traditional abrasive Flow Machining method processing revolving body Workpiece need carry out clamping to workpiece, but cannot be carried out polishing at clamping, need carry out secondary operations, the most not only can not expire The uniformity requirement that foot material is removed, and working (machining) efficiency is the lowest, and workpiece can be caused clamping damage by secondary clamping；If it is the most right Workpiece is clamped, and in the course of processing, workpiece easily collides with fixture, and abrasive particle is embedded between workpiece and fixture easily workpiece Produce new damage.
Summary of the invention
For solving the problems referred to above that prior art exists, present invention one to be designed can improve revolving body workpieces finishing and add The working (machining) efficiency of work, reduction processing cost also realize batch production, can solve again revolving body workpieces surfacing and remove inequality Even, clamping point cannot polish, workpiece and holder contacts have the folder that the revolving body workpieces spinning abrasive Flow of damage problem polishes Tool and method for designing thereof.
To achieve these goals, technical scheme is as follows: a kind of revolving body workpieces spinning abrasive Flow polishing Fixture, including clip base and mould, described mould layering is distributed in clip base；Described clip base upper Cover plate and lower cover all have multiple runner through hole；Described clip base for positioning and support the pressure of outside lathe to mould Power；
Described mould includes that runner upper plate and runner lower plate, described runner upper plate and runner lower plate make-up constitute stream Road, for placing workpiece to be processed；Described runner upper plate and runner lower plate use the material that hardness is less to make；
After described runner upper plate and runner lower plate all have through hole, runner upper plate and runner lower plate make-up, runner upper plate Through hole and the through hole of runner lower plate i.e. constitute the entrance and exit of runner；
The left side wall of described runner and right side wall are asymmetric concave shaped sloping platform surface, and front side wall is equal with rear wall For plane；
If the line of centres that the line of centres of the front side wall of runner and rear wall is x-axis, left side wall and right side wall be y-axis, The line of centres of runner upper plate and runner lower plate is z-axis；Then in yz plane, between upper hypotenuse and the y-axis of left side wall and declivity Angle [alpha] it is respectively provided with between limit and y-axis1, between upper hypotenuse and the y-axis of right side wall and lower be respectively provided with angle [alpha] between hypotenuse and y-axis2； On x/y plane, between front hypotenuse and the y-axis of left side wall, there is angle beta1, between rear hypotenuse and the y-axis of left side wall, there is angle β2, between front hypotenuse and the y-axis of right side wall, there is angle beta3, between rear hypotenuse and the y-axis of right side wall, there is angle beta4。
Further, described mould is layered superposition along JizZhou direction, abrasive flow direction；Arrange at each mould of same layer Becoming parallel array, the y-axis direction of the most each mould is parallel to each other, and the most uniform, the most uniform.
Further, described mould is layered superposition along JizZhou direction, abrasive flow direction；Arrange at each mould of same layer Becoming rotation array, the most each mould is the most uniform by y-axis direction, the most uniform by x-axis direction.
Further, described mould is layered superposition, the mould stream between each layer along JizZhou direction, abrasive flow direction Road aligns, and aligns with the runner through hole on upper cover plate and lower cover.
Further, described runner upper plate and runner lower plate use Rockwell hardness material between 60 to 80 to make, Described material includes nylon or PVC.
Further, described clip base is divided into parallel array clip base and rotation array clip base；Described Parallel array clip base includes right baffle-plate, right baffle plate, front apron, backboard, upper cover plate and lower cover, described right baffle-plate, Right baffle plate, front apron, backboard, upper cover plate and lower cover connect by hexagon socket cap head screw is fixing；Described rotation battle array Row clip base includes cylinder, upper cover plate and lower cover, and described cylinder connects upper cover respectively by hexagon socket cap head screw Plate and lower cover.
The method for designing of the fixture of a kind of revolving body workpieces spinning abrasive Flow polishing, comprises the following steps:
A, determine mold runner size L according to workpiece size；The determination principle of mold runner size L is both to have ensured that workpiece existed Smooth clamping when batch machining, ensures that again workpiece is loading after mold runner, will not produce big model because of abrasive flow The movement enclosed；Mold runner size L is between 1.01 to 1.1 times of Workpiece length；
B, size reverse according to workpiece go out angle [alpha]1、α2、β1、β2、β3、β4；α1、α2And β1、β2、β3、β4Selection principle It is to ensure that the workpiece smooth clamping in mold runner and does not clamps, i.e. angle [alpha]1、α2Transport in abrasive flow direction for limiting workpiece Dynamic angle, angle beta1、β2、β3、β4For limiting workpiece in the angle being perpendicular to the motion of abrasive flow direction；
C, determine eccentric throw；By changing angle beta1、β2、β3、β4Make workpiece eccentric placement in runner, i.e. ensure bias Away from l1≠l2, described eccentric throw l1For the distance of runner lower plate to axis of workpiece, eccentric throw l2For runner upper plate to axis of workpiece Distance.
Further, described angle [alpha]1Between 40-80 degree, angle [alpha]2Between 40-80 degree.
Further, described angle [alpha]1、α2、β1、β2、β3、β4Angular error control within ± 2 degree, described is inclined The heart is away from l1=(1.3～2) l2Between.
The invention has the beneficial effects as follows:
1, the present invention proposes the installation way without clamping, by size and the inclination angle of wall of given mold runner Degree, limits the motion of workpiece, solves the problem of non-clamping point because of all polishings of workpiece to be machined needs.
2, the present invention makes workpiece eccentric placement in runner by the internal wall angle of inclination of given mold runner, it is achieved that Revolving body workpieces realizes spinning during abrasive flow machining, relative to the abrasive flow machining method rotated without acceptance of persons, carries High Surface Machining uniformity and reduce surface roughness.
3, the mould of the present invention can be uniformly distributed at monolayer, and can add along the superposition of abrasive flow direction, single The piece count of work is many and working (machining) efficiency is high, and mould is convenient to mount and dismount easy, therefore can realize producing in enormous quantities.Than tradition revolution The polishing processing method of body workpiece, reduces production cost.
Accompanying drawing explanation
Fig. 1 is revolving body workpieces bias installation way and runner schematic diagram.
Fig. 2 is revolving body workpieces clamping schematic diagram in mould.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is off spinning abrasive Flow principle schematic.
Force analysis schematic diagram when Fig. 5 is work pieces process.
Fig. 6 is that flow field model sets up schematic diagram.
Fig. 7 is that runner is in the layering superposition along abrasive flow direction.
Fig. 8 is the parallel array mode of single layer flow path.
Fig. 9 is the rotation array way of single layer flow path.
Figure 10 is the fixture schematic diagram of parallel array mode.
Figure 11 is the A-A sectional view of Figure 10.
Figure 12 is the B-B sectional view of Figure 10.
In figure: 1, workpiece, 2, runner upper plate, 3, runner lower plate, 4, steady flow district, 5, crimp district, 7, mould, 8, Micro unit, 9, right baffle-plate, 10, right baffle plate, 11, hexagon socket cap head screw, 12, front apron, 13, backboard, 14, upper cover plate, 15, lower cover.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described through.
Fig. 1 is the eccentric installation way of workpiece 1 and runner schematic diagram, is also the structural representation of single mould 7, Fig. 2-3 institute Be shown as revolving body workpieces 1 without clamping eccentric rotary abrasive flow machining method clamping schematic diagram (shown by arrow is abrasive flows Dynamic direction), as can be seen from the figure come, select the size of runner according to the actual size of workpiece 1, the selection to channel size should Some condition below this guarantee:
(1) channel size L as Figure 2-3 should be approximately equal to and be slightly larger than the size of workpiece 1, on the one hand ensures workpiece The 1 smooth clamping when batch machining, on the other hand guarantee workpiece 1 is after loading runner, and in clamping process, workpiece 1 will not Produce the most mobile because of abrasive flow.
(2) angle [alpha] as Figure 2-3 is gone out according to the actual size reverse of workpiece 11、α2And β1、β2、β3、β4。α1、α2With β1、β2、β3、β4Selection should ensure that the workpiece 1 smooth clamping in runner and do not clamp, i.e. α1、α2(such as sloping platform and z side in Fig. 3 To angle) for limiting the angle moved in abrasive flow direction of workpiece 1, β1、β2(as in Fig. 2 fixture runner near workpiece 1 liang Side wall and the angle of workpiece 1 axis) it is being perpendicular to the angle of abrasive flow direction motion, with upper angle root for restriction workpiece 1 Determine its angle according to the shape of practical work piece 1, on the premise of ensureing not clamp, limit it at abrasive flow direction and vertical mill Degree of freedom in direction of flow, generally, for ensureing that actual processing needs, above angular error should control Within ± 2 degree.
(3) by changing above-mentioned β1And β2Difference, and β3And β4Difference make that workpiece 1 is eccentric in runner to be placed, Ensure there is certain eccentric throw, i.e. such as the l in Fig. 21≠l2, generally l1=(1.3～2) l2Between.
(4) mould 7 used by typically uses the material that hardness is relatively low, and such as nylon etc., to avoid workpiece 1 in the mistake of processing Journey occurs scratch phenomenon.
The eccentric clamping method of nothing clamping that the present invention proposes, mainly solves workpiece 1 surface and need to all polish and clamping portion Divide and cannot be polished to a conflicting difficult problem.The nothing clamping clamping method of present invention design and principle are specific as follows: the clamping of workpiece 1 Meet above-mentioned condition (2), i.e. angle [alpha]1、α2And β1、β2、β3、β4Selection should ensure that the workpiece 1 smooth clamping in runner and Do not clamp, limit α1、α2Size can limit workpiece 1 in the degree of freedom in z direction (abrasive flow direction) and freedom in the z-direction Degree, limits β1、β2、β3、β4Size i.e. limit workpiece 1 rotating along y-axis (axis direction of workpiece 1), x-axis direction and along x The degree of freedom that direction of principal axis rotates.And the degree of freedom on y-axis direction can be limited by runner two side walls, on i.e. installation way should meet The condition (1) stated.Therefore, under meeting above-mentioned restrictive condition, all degree of freedom of workpiece 1 motion only rotate along y-axis Degree of freedom is not limited, thus ensure that workpiece 1 can effective clamping and can rotating along its axis.
Above-mentioned angle [alpha]1、α2And β1、β2、β3、β4Selection can determine according to the shape and size of workpiece 1, the most really The method of determining can concretely comprise the following steps: (1) is according to work by CAD (computer aided design) (CAD) software according to the size design size of workpiece 1 Part 1 size tries to achieve above-mentioned L, l1And l2, and determine workpiece 1 location in runner；(2) according to the shape at workpiece 1 two Shape, draws the wall tilted shape at runner two, i.e. ensures that workpiece 1 does not falls out unobstructed with fully finished；(3) according to above Wall tilted shape measure angle [alpha] in software1、α2And β1、β2、β3、β4。
Fig. 4 is eccentric spinning abrasive flows principle schematic, according to known experimental result it can be concluded that workpiece 1 The rotating grinding stream finishing method rotated in the course of processing effectively can must improve working (machining) efficiency and the crudy of abrasive flows. Eccentric spinning clamping method and the principle of present invention design are specific as follows: in the actual course of processing, when abrasive material flows through workpiece 1 Time, it may appear that the crimp of abrasive material, the flowing of abrasive material can be divided into three districts: abrasive material arrives the steady flow before workpiece 1 District 4, abrasive material flows through the crimp district 5 of workpiece 1, and abrasive material flows through the steady flow district 4 of workpiece 1.So can make the assumption that: work The pressure drop of part 1 both sides abrasive material is identical, and can be approximately considered the distribution in the z-axis direction of the pressure of workpiece 1 both sides Approximately the same.For convenience of research, it is assumed that workpiece 1 is fixed in runner, analyze workpiece 1 stressing conditions now.Fig. 5 For the force analysis schematic diagram of workpiece 1, on abrasive flow direction at this moment, workpiece 1 is by power as shown in Figure 5: abrasive material and folder Has the F that made a concerted effort in workpiece 1 both sidesn1And Fn2；The shear stress generation of workpiece 1 both sides is made a concerted effort F by abrasive materialt1And Ft2；Mould 7 and mill Expect workpiece 1 supporting force N in a z-direction and thrust F；Frictional force f between workpiece 1 two and mould 71And f2.Workpiece 1 exists The essential condition realizing spinning in the course of processing is: workpiece 1 both sides shear stress difference is more than at workpiece 1 two and holder contacts Frictional force moment sum, be i.e. expressed as: │ M1-M2│>f1R1+f2R2.The shear stress moment of workpiece 1 side can be expressed as:
M = ∫ 0 L ∫ - π π R × τ × ( R × d θ ) × d σ = ∫ 0 L ∫ π - π R 2 τ d θ d σ - - - ( 1 )
In above formula: M is moment, N.mm；R is the workpiece 1 radius in axially different position, mm；τ is at workpiece 1 wall Shear stress；L is the length of workpiece 1, mm；L is the minimum range of workpiece 1 one lateral extent mould 7 wall, mm；D θ is workpiece 1 circle The differential of all angles, rad；D σ is the differential of length direction, mm；
Flow field change during runner, first research abrasive flows shear stress through square tube time is flowed through for convenience of analysis abrasive material Distribution, it is assumed that the length of square tube is dz, a width of a in bottom surface, a length of b, and it is dp that abrasive material flows through the pressure drop of square tube, if in not considering medium The friction in portion, then the distribution of shear stress of square tube can be obtained according to equation below:
Dp a b=2 (a+b) dz τ (2)
Thus obtain:
τ = a b 2 ( a + b ) · d p d z - - - ( 3 )
In coordinate system as shown in Figure 6, for convenience of analyzing, it can be assumed that workpiece 1 is cylinder, when abrasive material flows through micro unit 8 dz length time, abrasive material can be approximately considered and flow through above-mentioned one section square tube, it is assumed that pressure now reduces to dp, substitute into (3) formula Can obtain shear stress is:
τ = ( l + R - R 2 - z 2 ) L d p 2 [ ( ( l + R - R 2 - z 2 ) + L ) ] d z = 1 2 ( 1 L + 1 l + R - R 2 - z 2 ) d p d z - - - ( 4 )
Wherein:
Dz=R dsin θ (5)
Hypothesis according to above: the pressure drop of workpiece 1 both sides abrasive material is identical, and can be approximately considered workpiece 1 liang The distribution in the z-axis direction of the pressure of side is approximately the same.So, on workpiece 1, the shear stress at certain point is relevant with l.Actual raw In product, the workpiece 1 eccentric throw in clamping process should be adjusted according to actual needs, to ensure the power of workpiece 1 both sides shear stress Square difference, more than the frictional force moment sum at workpiece 1 two with mould 7 contact position, is i.e. expressed as: │ M1-M2│>f1R1+f2R2, thus Ensure workpiece 1 spinning.
Production lot in view of the skin processing of workpiece 1 is very big, and the most above-mentioned runner can be along abrasive flow Carry out on direction being layered superposition, can be with array superposition between each layer.Fig. 7 is that runner is in the layering along abrasive flow direction Superposition schematic diagram, Fig. 8 is the parallel array mode of single layer flow path, and Fig. 9 is the rotation array way of single layer flow path.The number of plies divided And depending on the array number of monolayer should be according to actual lathe parameter；Can flow the most smoothly in view of abrasive material Cross, so the superposition of runner should be ensured that with array array way is the most identical between layers, and the runner between each layer Alignment is should be ensured that in mould 7 installation process.
It it is the fixture schematic diagram that arranges by parallel array mode of mould 7 shown in Figure 10-12.
Described fixture runner is distributed in every layer of mould 7 by specific mode, and workpiece 7 is positioned in runner (workpiece 7 freedom Place wherein, can move in a scope the least, with easy to setup with realize eccentric rotary).Described mould 7 is on runner Plate 2 and runner lower plate 3 make-up form.Described mould 7 is positioned over by right baffle-plate 9, right baffle plate 10, upper cover plate 14, lower cover 15, front In the clip base that baffle plate 12, backboard 13 are formed, connected by hexagon socket cap head screw 11 between baffle plate and cover plate and fix, Upper cover plate 14 should have the through hole identical with runner size and location with lower cover 15, to facilitate abrasive flow, and this fixture base Body plays upper cover plate 14 and the location of lower cover 15 and bears lathe pressure applied.
Rotation array way fixture is similar with parallel array way fixture, and described runner is identical, except for the difference that will be by left gear The rectangular cylinder that plate 9, right baffle plate 10, front apron 12, backboard 13 are formed changes cylinder cylinder, upper cover plate 14 and lower cover 15 into The distribution mode of through hole is identical with the array way used.
The finishing method of the present invention comprises the following steps:
A, according to workpiece 1 size, abrasive material physical parameter and lathe parameter, determine eccentric throw during workpiece 1 clamping, i.e. determine Eccentric throw l1And l2Numerical value；
B, according to workpiece 1 size and eccentric throw l1And l2The size of design mould 7, the size of described mould 7 includes runner Size L and angle [alpha]1、α2、β1、β2、β3、β4；
C, the parameter of size, processing request and lathe according to workpiece 1 manufacturing batch, design mould 7 is in clip base Interior layout type, described layout type includes same layer arrangement mode and the number of plies, and described arrangement mode includes parallel array And rotation array；
D, layout type according to step D, installation mold 7 and workpiece 1 one by one；Each mould 7 and the installation steps of workpiece 1 As follows: runner lower plate 3 is installed；Put into workpiece 1；By runner upper plate 2 to being buckled in runner lower plate 3；
All workpiece 1 are polished by F, according to the rules flow process.
The present invention is not limited to the present embodiment, any equivalent concepts in the technical scope of present disclosure or change Become, be all classified as protection scope of the present invention.

Claims (6)

1. the fixture of a revolving body workpieces spinning abrasive Flow polishing, it is characterised in that: include clip base and mould (7), described mould (7) layering is distributed in clip base；The upper cover plate (14) of described clip base and lower cover (15) All have multiple runner through hole；Described clip base is for positioning to mould (7) and support the pressure of outside lathe；
Described mould (7) includes runner upper plate (2) and runner lower plate (3), described runner upper plate (2) and runner lower plate (3) Make-up constitutes runner, for placing workpiece (1) to be processed；Described runner upper plate (2) and runner lower plate (3) use hardness relatively Little material is made；
After described runner upper plate (2) and runner lower plate (3) all have through hole, runner upper plate (2) and runner lower plate (3) make-up, The through hole of runner upper plate (2) and the through hole of runner lower plate (3) i.e. constitute the entrance and exit of runner；
The left side wall of described runner and right side wall are asymmetric concave shaped sloping platform surface, and front side wall and rear wall are flat Face；
If the line of centres that the line of centres of the front side wall of runner and rear wall is x-axis, left side wall and right side wall is y-axis, runner The line of centres of upper plate (2) and runner lower plate (3) is z-axis；Then in yz plane, between upper hypotenuse and the y-axis of left side wall and under Angle [alpha] it is respectively provided with between hypotenuse and y-axis1, between upper hypotenuse and the y-axis of right side wall and lower be respectively provided with angle between hypotenuse and y-axis α2；On x/y plane, between front hypotenuse and the y-axis of left side wall, there is angle beta1, between rear hypotenuse and the y-axis of left side wall, there is angle Degree β2, between front hypotenuse and the y-axis of right side wall, there is angle beta3, between rear hypotenuse and the y-axis of right side wall, there is angle beta4。
2. a method for designing for the fixture of revolving body workpieces spinning abrasive Flow as claimed in claim 1 polishing, it is special Levy and be: comprise the following steps:
A, determine mould (7) channel size L according to workpiece (1) size；The determination principle of mould (7) channel size L is both to have ensured The workpiece (1) the smooth clamping when batch machining, ensure again workpiece (1) loading after mould (7) runner, will not be because of abrasive material Flow and produce the most mobile；Mould (7) channel size L is between 1.01 to 1.1 times of workpiece (1) length；
B, size reverse according to workpiece (1) go out angle [alpha]1、α2、β1、β2、β3、β4；α1、α2And β1、β2、β3、β4Selection principle be Ensure the workpiece (1) smooth clamping in mould (7) runner and do not clamp, i.e. angle [alpha]1、α2For limiting workpiece (1) in abrasive flows The angle of dynamic direction motion, angle beta1、β2、β3、β4For limiting workpiece (1) in the angle being perpendicular to the motion of abrasive flow direction；
C, determine eccentric throw；By changing angle beta1、β2、β3、β4Make workpiece (1) eccentric placement in runner, i.e. ensure eccentric throw l1≠l2, described eccentric throw l1For the distance of runner lower plate (3) to workpiece (1) axis, eccentric throw l2Arrive for runner upper plate (2) The distance of workpiece (1) axis.
The method for designing of the fixture of a kind of revolving body workpieces spinning abrasive Flow the most according to claim 2 polishing, its It is characterised by: described angle [alpha]1Between 40-80 degree, angle [alpha]2Between 40-80 degree.
The method for designing of the fixture of a kind of revolving body workpieces spinning abrasive Flow the most according to claim 2 polishing, its It is characterised by: described angle [alpha]1、α2、β1、β2、β3、β4Angular error control within ± 2 degree, described eccentric throw l1= (1.3～2) l2Between.
The fixture of a kind of revolving body workpieces spinning abrasive Flow the most according to claim 1 polishing, it is characterised in that: institute The mould (7) stated is i.e. horizontal direction ordered arrangement along abrasive flow direction, it is achieved polish while multiple parts.
The fixture of a kind of revolving body workpieces spinning abrasive Flow the most according to claim 1 polishing, it is characterised in that: institute The mould (7) stated is layered superposition ordered arrangement along abrasive flow direction, it is achieved polish while multilamellar part.
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CN108326638A (en) * 2018-01-09 2018-07-27 上海理工大学 Box magnetic coupling fluid polishing device
CN110815041A (en) * 2019-11-15 2020-02-21 南京尚吉增材制造研究院有限公司 Turbulence-driven self-revolution clamp for abrasive flow surface finishing

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JP2009248195A (en) * 2008-04-01 2009-10-29 Olympus Corp Workpiece holding device
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108326638A (en) * 2018-01-09 2018-07-27 上海理工大学 Box magnetic coupling fluid polishing device
CN110815041A (en) * 2019-11-15 2020-02-21 南京尚吉增材制造研究院有限公司 Turbulence-driven self-revolution clamp for abrasive flow surface finishing

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