CN106216724A - A kind of quick workpiece machining clamp of thin-wall part - Google Patents
A kind of quick workpiece machining clamp of thin-wall part Download PDFInfo
- Publication number
- CN106216724A CN106216724A CN201610684907.3A CN201610684907A CN106216724A CN 106216724 A CN106216724 A CN 106216724A CN 201610684907 A CN201610684907 A CN 201610684907A CN 106216724 A CN106216724 A CN 106216724A
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- China
- Prior art keywords
- thin
- wall part
- chuck
- soft pawl
- sector
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/1627—Details of the jaws
Abstract
The quick workpiece machining clamp of thin-wall part of the present invention, including: chuck, it is installed on lathe；Several fan-shaped soft pawls, the axis direction circular array along described chuck is arranged, and the soft pawl of described sector is removably mounted on described chuck；Wherein, the soft pawl of described sector is stepped, and the one side near described chuck is plane, and the one side away from described chuck is cascaded surface, and the thickness in the outer arc face of the soft pawl of described sector is more than the thickness in the inner arc face of the soft pawl of described sector, forms cavity.The present invention use face contact between thin-wall part pawl soft with sector so that contact area is big, and clamp force distribution is uniform, it is ensured that the machining accuracy of thin-wall part, thus improves the working (machining) efficiency of thin-wall part, and product has good wear-resisting, high temperature resistant and stability.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of fixture, the quick workpiece machining clamp of a kind of thin-wall part.
Background technology
Conventional thin wall circular collar member is relatively thin due to himself wall ratio, and rigidity is not enough, is easily deformed, and uses conventional folder
Tool, makes its machining accuracy not reach requirement owing to clamping force inequality causes part deformation to produce error, and qualification rate is low；Part frock
Although fixture can guarantee that machining accuracy under careful clamping, but wastes time and energy, working (machining) efficiency is the highest, particularly in batch production
In, conventional Vehicle Processing frock clamp is difficult to meet required machining accuracy and working (machining) efficiency.
In sum, for solving the deficiency on existing clamp structure, need to design a kind of processing being easy to thin-wall part, and add
Work precision is high, the quick workpiece machining clamp of the thin-wall part that production efficiency is fast.
Summary of the invention
It is an object of the invention to there are the problems referred to above for existing technology, it is proposed that a kind of clamping is laborsaving, and processing essence
Degree height, the quick workpiece machining clamp of the thin-wall part that production efficiency is fast.
The purpose of the present invention can be realized by following technical proposal: the quick workpiece machining clamp of a kind of thin-wall part, including:
Chuck, is installed on lathe；
Several fan-shaped soft pawls, the axis direction circular array along described chuck is arranged, and the soft pawl of described sector is removable
It is arranged on unloading on described chuck；
Wherein, the soft pawl of described sector is stepped, and the one side near described chuck is plane, away from the one side of described chuck
For cascaded surface, and the thickness in the outer arc face of the soft pawl of described sector is more than the thickness in the inner arc face of the soft pawl of described sector,
Form cavity.
In the quick workpiece machining clamp of above-mentioned a kind of thin-wall part, the thickness direction along the soft pawl of described sector offers two
Individual through hole, and one of them described through hole is near the outer arc face of the soft pawl of described sector, another described through hole is near described fan
The inner arc face of the soft pawl of shape.
In the quick workpiece machining clamp of above-mentioned a kind of thin-wall part, in each soft pawl of described sector, it is positioned at described fan
The company of the described through hole on the outer arc face of the soft pawl of shape and the described through hole on the inner arc face being positioned at the soft pawl of described sector
Line is the Axisymmetric Distributed Line of the soft pawl of described sector.
In the quick workpiece machining clamp of above-mentioned a kind of thin-wall part, described cavity is stepped, wherein, near described card
The arc radius of the described cavity of dish side is less than the arc radius of the described cavity away from described chuck side.
In the quick workpiece machining clamp of above-mentioned a kind of thin-wall part, described through hole is counterbore.
In the quick workpiece machining clamp of above-mentioned a kind of thin-wall part, the quantity of the soft pawl of described sector is 3.
Preferred as one, the main part of described chuck is stainless steel, and its top layer is doped with additive, institute
Stating additive is at least one in carbon fiber, ceramic fibre, titanium nitride, calcium carbonate.This programme is by simultaneously by interpolation
Additive part, as protective layer and the machine of steel (conduction of heat of quick Vehicle Processing generation and thermal stress) in high temperature environments
Tool performance increases tissue, has reached to improve the purpose of its high-temperature stability and toleration, it is achieved that long-term phase higher temperatures (is higher than
200 degrees Celsius) steady quality.By the specific use of additive, overcome impurity element and lattice defect etc. at knot
Harmful effect in terms of structure and intensity.
Preferred as one, described additive accounts for the 0.1-0.3wt% of main body gross mass.
Preferred as one, described additive is doped in its top layer in main body.
Preferred as one, described additive doping depth in main body is not more than 0.5mm.
Preferred as one, described additive is uniformly distributed in main body top layer or from outward appearance to inner essence successively decreases (i.e. along with mixing
The increase of the miscellaneous degree of depth, in the same degree of depth, the content of additive reduces).
In the present invention program, the additive of low-doped amount is used only to be entrained in the surface structure of alloy, it is achieved that low-mix
The stable lifting of the high temperature resistant and mechanical performance under miscellaneous amount, decreases the content at alloy components internal additives simultaneously, and reduces
The content of " impurity " form material of internal influence electric conductivity, thus reduce the impact on alloy electric conductivity.And at high temperature form
Under, when there is carbon fiber in additive, its electric conductivity is strengthened, and reduces the high temperature impact on alloy self-resistance, promotes
The conductive capability of high temperature section.
Preferred as one, when being carbon fiber, ceramic fibre, titanium nitride, calcium carbonate in described additive, its surface is the most pre-
Being initially formed intermediate layer, described intermediate layer includes at least one of which aluminum middle layer.
Preferred as one, in described intermediate layer, the thickness of every layer of aluminum middle layer is 0.1-0.4 micron.
Preferred as one, described intermediate layer also includes copper transition zone between adjacent two aluminum middle layers.Intermediate layer
Copper/constructed of aluminium, to improve the histocompatibility of additive, simultaneously works as controlling the effect of cost.And do not affect the device pointed out
Be welded to connect performance.
Preferred as one, the gross thickness in described intermediate layer is 2-3 micron.
To total interlayer thickness and the control of each layer thickness in the present invention, with adapt to additive to high temperature resistance and
The compatibility to alloy structure, thus form consistent and effective phase composition part in interpolation part, thus at alloy structure table
Layer forms that high temperature resistance is good and the exsertile organizational structure of mechanicalness, thus promotes the heat stability of alloy, machine on the whole
Tool performance and heat dispersion.
Preferred as one, the sidewall of described chuck is additionally provided with the bulge-structure of silicone rubber material.Silicon in this programme
Quality of rubber materials makes this bulge-structure have good elasticity and buffering recovery capability, so that it is when being collided, it is provided that
Good flexible buffer, thus provide protection for chuck, reduce impact injury and blastic deformation.
Preferred as one, the sidewall of described chuck is additionally provided with hard cap, hard cap spread configuration is in sidewall surfaces
Or bulge-structure surface.In this programme arrange hard cap, for main body provide protection while so that it is be difficult in use by
Destroy, wearability can be improved again simultaneously, prevent abrasion.Hard cap can be ceramic cap, and this ceramic cap can be carborundum pottery
Porcelain sheet type, it has the good compatibility with silicone rubber main body, has again a light weight simultaneously, the characteristic that good rigidly, wearability are strong,
Make it that bulge-structure to provide sufficiently protection.The hard cap of silicon carbide ceramics sheet type, utilizes silicon carbide ceramics high intensity high
The characteristic of hardness and combine its relatively thin thickness, and when by greater impact, preferential occurs rigidity to crush, thus implements just
Property-flexible double protection, thus promote protecting against shock performance.In the program, silicon carbide ceramics can be, its raw material composition includes, with
Parts by weight meter: alpha-silicon carbide 100 parts；Alumina particle and magnesium oxide particle 0.3-1.2 part；YAG powder 3-10 part.As excellent
Choosing, the granularity of alpha-silicon carbide is D50≤0.5 micron.It is furthermore preferred that the granularity of alumina particle and magnesium oxide particle be D50≤
3.0 micron.It is highly preferred that raw material is prepared through water base ball milling, add during the most water base ball milling and account for raw material gross mass percent 16-
The PVA aqueous solution of 20%, the concentration of PVA aqueous solution is 10wt.%.It is highly preferred that be also added with during water base ball milling accounting for the total matter of raw material
The dispersant of amount percent 0.05-0.5%.
Compared with prior art, in the quick workpiece machining clamp of the thin-wall part that the present invention provides, thin-wall part and the soft pawl of sector
Between use face contact so that contact area is big, and clamp force distribution is uniform, it is ensured that the machining accuracy of thin-wall part, thus improves
The working (machining) efficiency of thin-wall part.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the quick workpiece machining clamp of a kind of thin-wall part of the present invention.
Fig. 2 is the sectional view of A-A in Fig. 1.
In figure, 100, chuck；200, fan-shaped soft pawl；210, cavity；220, through hole；300, thin-wall part.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As depicted in figs. 1 and 2, the quick workpiece machining clamp of a kind of thin-wall part that the present invention provides, including a chuck 100,
It is installed on lathe；Several fan-shaped soft pawls 200, the axis direction circular array along chuck 100 is arranged, and fan-shaped soft pawl
200 are removably mounted on chuck 100, it is preferable that be connected with chuck 100 by fan-shaped soft pawl 200 by threaded fastener.Excellent
Selection of land, the quantity of fan-shaped soft pawl 200 is 3.
Preferably, as depicted in figs. 1 and 2, fan-shaped soft pawl 200 is stepped, wherein, and fan-shaped soft pawl 200 and chuck 100 phase
The one side of laminating is plane, is cascaded surface away from the one side fitted with chuck 100, and fan-shaped soft pawl 200 outer arc face
Thickness is more than the thickness in fan-shaped soft pawl 200 inner arc face so that form cavity 210 between the arc surface of interior outside, as thin-walled
Located space when part 300 is installed on fixture.
Preferably, as depicted in figs. 1 and 2, the thickness direction along fan-shaped soft pawl 200 offers two through holes 220, and wherein
One through hole 220 is near the outer arc face of fan-shaped soft pawl 200, and another through hole 220 is near the inner arc of fan-shaped soft pawl 200
Face so that when fan-shaped soft pawl 200 is arranged on chuck 100, bilateral stress, install more steady, thus prevent fan-shaped soft pawl 200
There is eccentric phenomena when mounted so that when processing thin-wall part 300, machining accuracy meets process requirements.
Preferably, as depicted in figs. 1 and 2, in each fan-shaped soft pawl 200, it is positioned on fan-shaped soft pawl 200 outer arc face
Through hole 220 and the axial symmetry that the line of the through hole 220 being positioned on fan-shaped soft pawl 200 inner arc face is this fan-shaped soft pawl 200
Line.
Such structure is arranged so that fan-shaped soft pawl 200, in solid Timing symmetric stress, prevents sector from occurring when mounted partially
Heart phenomenon.
Preferably, as depicted in figs. 1 and 2, through hole 220 is counterbore so that when fan-shaped soft pawl 200 is connected with chuck 100, protects
Demonstrate,prove the surfacing of fan-shaped soft pawl 200, smooth.
Preferably, as depicted in figs. 1 and 2, the cavity 210 between the interior outside arc surface of fan-shaped soft pawl 200 is stepped,
Wherein, the arc radius of the cavity 210 near chuck 100 side is less than the arc half of the cavity 210 away from chuck 100 side
Footpath so that when thin-wall part 300 is positioned on fan-shaped soft pawl 200, the positioning end of thin-wall part 300 and sector soft pawl 200 inner arc
Leave space between face so that thin-wall part 300 is when turnery processing, and the stress of generation is released, prevent thin-wall part 300 from occurring
Deformation.
The present invention provides the fabrication and installation flow process of clamp for machining: first takes solid cylinder steel and makes annular soft pawl, will
The soft radix unguis of annular amplifies 0.03-0.05mm according to the excircle dimension of thin-wall part 300 and processes an annular cavity, and depth of inner cavity is thin
The half of wall pieces 300 thickness, and process a small stair face at intracavity bottom, it is used for positioning；Secondly will by the mode of line cutting
The soft pawl of annular divides equally three equal parts, forms three soft pawls of sector 200, and is fixed by three soft pawls of sector 200 by threaded fastener
On chuck 100, then thin-wall part 300 is pushed in cavity 210 and position；Three soft pawls of sector are promoted finally by chuck 100
Draw in 200 phases, thus clamp thin-wall part 300, it is achieved the clamping of thin-wall part 300.
In the clamp for machining that the present invention provides, face is used to contact between thin-wall part 300 pawl soft with sector 200 so that contact
Area is big, and clamp force distribution is uniform, it is ensured that the machining accuracy of thin-wall part 300, thus improve thin-wall part 300 add work efficiency
Rate.
It is below that the embodiment of chuck main body is (wherein as a example by main part material selection 304 rustless steel of chuck, rather than right
The restriction of technical scheme, its equally use include, without being limited to 201,202,302,316,304L, 316L, 321
Other stainless steel material interior)
Embodiment 1
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber content in main body is 0.13wt%.
Embodiment 2
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Ceramic fibre content in main body is 0.3wt%.
Embodiment 3
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Titanium nitride content in main body is 0.2wt%.
Embodiment 4
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Calcium carbonate content in main body is 0.1wt%.
Embodiment 5
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, ceramic fibre content in main body is respectively 0.1wt%, 0.13wt%.
Embodiment 6
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, calcium carbonate content in main body is respectively 0.01wt%, 0.16wt%wt%.
Embodiment 7
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, titanium nitride content in main body is respectively 0.15wt%, 0.13wt%.
Embodiment 8
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Ceramic fibre, titanium nitride content in main body is respectively 0.1wt%, 0.18wt%.
Embodiment 9
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Ceramic fibre, calcium carbonate content in main body is respectively 0.05wt%, 0.05wt%.
Embodiment 10
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Titanium nitride, calcium carbonate content in main body is respectively 0.01wt%, 0.23wt%.
Embodiment 11
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, ceramic fibre, titanium nitride content in main body is respectively 0.1wt%, 0.03wt%, 0.13wt%.
Embodiment 12
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, ceramic fibre, calcium carbonate content in main body is respectively 0.04wt%, 0.08wt%, 0.12wt%.
Embodiment 13
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, titanium nitride, calcium carbonate content in main body is respectively 0.15wt%, 0.07wt%, 0.04wt%.
Embodiment 14
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Ceramic fibre, titanium nitride, calcium carbonate content in main body is respectively 0.01wt%, 0.23wt%, 0.03wt%.
Embodiment 15
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, ceramic fibre, titanium nitride, calcium carbonate content in main body be respectively 0.11wt%, 0.03wt%, 0.05wt%,
0.11wt%.
Embodiment 16
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, calcium carbonate content in main body is respectively 0.08wt%, 0.03wt%.
Embodiment 17
The main part of the chuck of the present embodiment is 304 stainless steels, and its top layer is doped with additive, additive
Carbon fiber, ceramic fibre, titanium nitride, calcium carbonate content in main body be respectively 0.08wt%, 0.03wt%, 0.05wt%,
0.10wt%.
Table 1 embodiment 1-17 sample machinery electric conductivity
Table 1 test value is respective samples and randomly draws 100, retest plot mean, and size of sample is 3mm*
The sheet material of 1*10.
It can be seen that compared with relevant art in upper table, in addition to the lifting in conduction and high-temperature mechanical property, material
The high-temperature stability of material performance is also greatly improved.
In view of the present invention program embodiment is numerous, each embodiment experimental data is huge numerous, is not suitable for arranging the most one by one
Lift explanation, but the content of the required checking of each embodiment and the final conclusion obtained are the most close, so the most unreal to each
The checking content executing example illustrates one by one, in place of only the present patent application excellence being described using above example 1-17 as representative.
Include, without being limited to following example in interior content, for including, without being limited to cited by above-described embodiment 1-17
(through measuring, when testing temperature 200 degrees Celsius after optimization, high-temperature mechanical property is compared to upper table in the optimization further of technical scheme
The lifting of about 10-40% is all obtained shown in 1 correspondence), rather than limiting the scope of the present invention.
Distinguishing with above-described embodiment, additive is doped in its top layer in main body, i.e. at the alloy of whole main body
Tissue becomes non-uniform Distribution form, is mainly collected in the surface part of alloy.
Distinguishing with above-described embodiment, additive doping depth in main body is that 0.5mm (mix in main body by additive
The miscellaneous degree of depth can also be 0.17mm, 0.29mm, 0.36mm, 0.48mm, 0.32mm, 0.4mm, 0.24mm, 0.25mm, 0.21mm,
0.18mm、0.30mm、0.33mm、0.14mm、0.22mm、0.103mm、0.02mm、0.05mm、0.07mm、0.08mm、0.1mm、
0.2mm, 0.15mm, 0.25mm, 0.35mm, 0.45mm and other be not more than the value of 0.5mm).The least when being agglomerated into one
Thickness be that alloy surface defines one and mainly formed the shell with alloy as bonding agent by additive, now have good
Wearability and resistance to elevated temperatures.Now, additive can be uniformly distributed in the alloy surface in doping depth in main body；Also
From outward appearance to inner essence can successively decrease with content, i.e. along with the increase of doping depth, in the same degree of depth, the content of additive reduces.
Distinguish with above-described embodiment, when additive is carbon fiber, ceramic fibre, titanium nitride, calcium carbonate, its table
Face is all pre-formed with intermediate layer, intermediate layer include one layer of aluminum middle layer (intermediate layer can also include two-layer aluminum middle layer or
Three layers of aluminum middle layer or four layers of aluminum middle layer or five layers of aluminum middle layer or the aluminum middle layer of more than five layers).
Distinguishing with above-described embodiment, in intermediate layer, to be 0.1 micron (every in intermediate layer for the thickness of every layer of aluminum middle layer
The thickness of layer aluminum middle layer can also be 0.17 micron, 0.29 micron, 0.36 micron, 0.18 micron, 0.32 micron, 0.4 micron,
0.24 micron, 0.25 micron, 0.21 micron, 0.13 micron, 0.30 micron, 0.33 micron, 0.14 micron, 0.22 micron, 0.103
Micron, 0.02 micron, 0.19 micron, 0.37 micron, 0.28 micron, 0.1 micron, 0.2 micron, 0.15 micron, 0.25 micron,
Other arbitrary value in 0.35 micron, 0.125 micron and 0.1-0.4 micrometer range).
Distinguish with above-described embodiment, can also there be copper transition zone in intermediate layer between adjacent two aluminum middle layers
Form aluminum middle layer/aluminum middle layer or the structure of aluminum middle layer/copper transition zone the most in the intermediate layer.The thickness of copper transition zone is
0.1 micron (thickness of copper transition zone can also be 0.17 micron, 0.129 micron, 0.136 micron, 0.18 micron, 0.132 micro-
Rice, 0.14 micron, 0.124 micron, 0.125 micron, 0.121 micron, 0.13 micron, 0.1230 micron, 0.133 micron, 0.14
Micron, 0.122 micron, 0.103 micron, 0.02 micron, 0.19 micron, 0.167 micron, 0.188 micron, 0.141 micron, 0.2
Other arbitrary value in micron, 0.15 micron, 0.195 micron, 0.175 micron, 0.135 micron and 0.1-0.2 micrometer range).
Distinguishing with above-described embodiment, the gross thickness in intermediate layer is 2 microns, and (gross thickness in intermediate layer can also be
2.17 microns, 2.29 microns, 2.36 microns, 2.18 microns, 2.32 microns, 2.4 microns, 2.24 microns, 2.25 microns, 2.21 micro-
Rice, 2.13 microns, 2.30 microns, 2.33 microns, 2.14 microns, 2.22 microns, 2.103 microns, 2.02 microns, 2.19 microns,
2.37 microns, 2.28 microns, 2.1 microns, 2.2 microns, 2.5 microns, 2.25 microns, 2.35 microns, 2.6 microns, 2.7 microns,
2.8 microns, 2.9 microns, 3 microns, 2.125 microns, 2.15 microns, 2.45 microns, 2.55 microns, 2.65 microns, 2.75 microns,
Other arbitrary value in 2.85 microns, 2.95 microns and 2-3 micrometer range).
With include, without being limited to what above-described embodiment distinguished, the sidewall of chuck is additionally provided with the projection of silicone rubber material
Structure.
With include, without being limited to what above-described embodiment distinguished, the sidewall of chuck is additionally provided with hard cap, hard cap is arranged
Row are arranged at sidewall surfaces.
With include, without being limited to what above-described embodiment distinguished, the sidewall of chuck is additionally provided with hard cap, hard cap is arranged
Row are arranged at bulge-structure surface.
With include, without being limited to what above-described embodiment distinguished, hard cap is silicon carbide ceramics sheet type.
With include, without being limited to what above-described embodiment distinguished, the hard cap of silicon carbide ceramics can by include without limit
Obtain in preparation embodiment as described below:
Preparation embodiment 1
This prepares in embodiment, and the raw material of pottery consists of alpha-silicon carbide 100 parts；Alumina particle and magnesium oxide particle
0.3 part；5 parts of YAG powder, above-mentioned raw materials is sintered after the techniques such as batch mixing ball milling, spray drying, dry-pressing formed, low-temperature sintering
Ceramic hard cap,
Its low temperature sintering is to sinter under argon shield in vacuum high temperature furnace, and sintering temperature is 1875 DEG C, in-furnace temperature
After reaching sintering temperature, the heat preservation sintering time is 1.3h, and argon is filled with when vacuum high temperature furnace is preheated to 1500 DEG C.
This is prepared embodiment and prepares ceramics sample 100, sintering finished qualification rate 99%, and sample is through detection, averagely fine and close
Degree ＞ 98%, fracture toughness is less than 4.5MPA.
Preparation embodiment 2
This prepares in embodiment, and the raw material of pottery consists of alpha-silicon carbide 100 parts；Alumina particle and magnesium oxide particle
0.7 part；3 parts of YAG powder, above-mentioned raw materials is sintered after the techniques such as batch mixing ball milling, spray drying, dry-pressing formed, low-temperature sintering
Ceramic hard cap,
Its low temperature sintering is to sinter under argon shield in vacuum high temperature furnace, and sintering temperature is 1860 DEG C, in-furnace temperature
After reaching sintering temperature, the heat preservation sintering time is 1.8h, and argon is filled with when vacuum high temperature furnace is preheated to 1500 DEG C.
This is prepared embodiment and prepares ceramics sample 100, sintering finished qualification rate 99%, and sample is through detection, averagely fine and close
Degree ＞ 98%, fracture toughness is less than 4.5MPA.
Preparation embodiment 3
This prepares in embodiment, and the raw material of pottery consists of alpha-silicon carbide 100 parts；Alumina particle and magnesium oxide particle
1.0 part；10 parts of YAG powder, above-mentioned raw materials is sintered after the techniques such as batch mixing ball milling, spray drying, dry-pressing formed, low-temperature sintering
Ceramic hard cap,
Its low temperature sintering is to sinter under argon shield in vacuum high temperature furnace, and sintering temperature is 1870 DEG C, in-furnace temperature
After reaching sintering temperature, the heat preservation sintering time is 1.3h, and argon is filled with when vacuum high temperature furnace is preheated to 1500 DEG C.
This is prepared embodiment and prepares ceramics sample 100, sintering finished qualification rate 99%, and sample is through detection, averagely fine and close
Degree ＞ 98%, fracture toughness is less than 4.5MPA.
Preparation embodiment 4
This prepares in embodiment, and the raw material of pottery consists of alpha-silicon carbide 100 parts；Alumina particle and magnesium oxide particle
1.2 part；7 parts of YAG powder, above-mentioned raw materials is sintered after the techniques such as batch mixing ball milling, spray drying, dry-pressing formed, low-temperature sintering
Ceramic hard cap,
Its low temperature sintering is to sinter under argon shield in vacuum high temperature furnace, and sintering temperature is 1900 DEG C, in-furnace temperature
After reaching sintering temperature, the heat preservation sintering time is 2h, and argon is filled with when vacuum high temperature furnace is preheated to 1500 DEG C.
This is prepared embodiment and prepares ceramics sample 100, sintering finished qualification rate 99%, and sample is through detection, averagely fine and close
Degree ＞ 98%, fracture toughness is less than 4.5MPA.
Preparation embodiment 5
This prepares in embodiment, and the raw material of pottery consists of alpha-silicon carbide 100 parts；Alumina particle and magnesium oxide particle
0.8 part；9 parts of YAG powder, above-mentioned raw materials is sintered after the techniques such as batch mixing ball milling, spray drying, dry-pressing formed, low-temperature sintering
Ceramic hard cap,
Its low temperature sintering is to sinter under argon shield in vacuum high temperature furnace, and sintering temperature is 1890 DEG C, in-furnace temperature
After reaching sintering temperature, the heat preservation sintering time is 1.5h, and argon is filled with when vacuum high temperature furnace is preheated to 1500 DEG C.
This is prepared embodiment and prepares ceramics sample 100, sintering finished qualification rate 99%, and sample is through detection, averagely fine and close
Degree ＞ 98%, fracture toughness is less than 4.5MPA.
Preparation embodiment 6
This prepares in embodiment, and the raw material of pottery consists of alpha-silicon carbide 100 parts；Alumina particle and magnesium oxide particle
0.5 part；8 parts of YAG powder, above-mentioned raw materials is sintered after the techniques such as batch mixing ball milling, spray drying, dry-pressing formed, low-temperature sintering
Ceramic hard cap,
Its low temperature sintering is to sinter under argon shield in vacuum high temperature furnace, and sintering temperature is 1850 DEG C, in-furnace temperature
After reaching sintering temperature, the heat preservation sintering time is 1.2h, and argon is filled with when vacuum high temperature furnace is preheated to 1500 DEG C.
This is prepared embodiment and prepares ceramics sample 100, sintering finished qualification rate 99%, and sample is through detection, averagely fine and close
Degree ＞ 98%, fracture toughness is less than 4.5MPA.
Preparation embodiment 7-12 differs only in preparation embodiment 1-6, and the granularity of alpha-silicon carbide is that D50≤0.5 is micro-
(this place value can also be less than or equal to 0.3 micron, less than or equal to 0.15 micron, less than or equal to 0.4 micron, be less than or equal to rice
0.25 micron, less than or equal to 0.37 micron, less than or equal to 0.13 micron).This place each preparation embodiment prepares ceramics sample 100,
Sintering finished qualification rate 99%, sample is through detection, average density ＞ 98.5%, fracture toughness 4.3-5.0MPA.
Prepare embodiment 13-24 and prepare differing only in of embodiment 1-12, alumina particle and magnesium oxide particle
Granularity is that (this place value can also be less than or equal to 2.3 microns, less than or equal to 1.5 microns, be less than or equal in D50≤3.0 micron
1.4 microns, less than or equal to 2.25 microns, less than or equal to 2.7 microns, less than or equal to 1.13 microns).The each preparation in this place embodiment system
Standby ceramics sample 100, sintering finished qualification rate 99%, sample is through detection, and average density ＞ 98.5%, fracture toughness (takes
Average value ranges, lower same) 4.8-5.3MPA.
Preparation embodiment 25-48 differs only in preparation embodiment 1-24, and raw material is prepared through water base ball milling, Qi Zhongshui
Adding the PVA aqueous solution accounting for raw material gross mass percent 16% during base ball milling, the concentration of PVA aqueous solution is 10wt.%.This place is each
Preparation embodiment prepares ceramics sample 100, sintering finished qualification rate 99%, and sample, through detection, average density ＞ 98%, breaks
Split toughness more than 7.4MPA.During the most water base ball milling PVA aqueous solution add account for raw material gross mass percent can also be 17%,
17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 18.3%, 17.2%, 16.7%, 19.4%, 16.1%, 18.8%
And other arbitrary value in the range of 16-20%, and product quality is satisfied by the sintering finished qualification rate of aforementioned claim 99%, sample
Product are through detection, average density ＞ 98%, fracture toughness 5.3-5.8MPA.
Preparation embodiment 47-96 differs only in preparation embodiment 1-48, and when carrying out water base ball milling, ball milling slurry is dense
Degree is (in terms of solid quality percent) 45%, Ball-milling Time 3h.This place ball milling slurry concentration can also be 46%, 47%,
48%, other arbitrary values in the range of 49%, 50% or 45-50%；Ball-milling Time can also be 1h, 2h, 1.5h or 1-3h
In the range of other arbitrary value.This place each preparation embodiment product quality is satisfied by the sintering finished qualification rate of aforementioned claim 99%, sample
Product are through detection, average density ＞ 98%, fracture toughness 5.5-6.2MPA.
Preparation embodiment 47-96 differs only in preparation embodiment 1-48, is obtained by spray drying time dry-pressing formed
The granulation material that granularity D50 is 0.10mm, dry-pressing formed at 150MPA pressure.Granularity D50 that this place is dried to obtain can also be
0.15, other arbitrary values in the range of 0.2,0.17,0.12,0.14 or 0.10-0.20mm；Dry-pressing formed pressure can also be
170, other arbitrary value in the range of 200,175 or 150-200MPA.This place each preparation embodiment product quality is satisfied by aforementioned
Requiring sintering finished qualification rate 99%, sample is through detection, average density ＞ 98%, fracture toughness 6.3-6.5MPA.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory
Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a quick workpiece machining clamp for thin-wall part, including:
Chuck, is installed on lathe；
Several fan-shaped soft pawls, the axis direction circular array along described chuck is arranged, and the soft pawl of described sector is removably
It is arranged on described chuck；
Wherein, the soft pawl of described sector is stepped, and the one side near described chuck is plane, and the one side away from described chuck is rank
Tread, and the thickness in the outer arc face of the soft pawl of described sector is more than the thickness in the inner arc face of the soft pawl of described sector, is formed
Cavity.
The quick workpiece machining clamp of thin-wall part the most according to claim 1, it is characterised in that along the thickness of the soft pawl of described sector
Degree direction offers two through holes, and one of them described through hole is near the outer arc face of the soft pawl of described sector, described in another
Through hole is near the inner arc face of the soft pawl of described sector.
The quick workpiece machining clamp of thin-wall part the most according to claim 1 and 2, it is characterised in that each described sector
In soft pawl, the described through hole being positioned on the outer arc face of the soft pawl of described sector and the inner arc face being positioned at the soft pawl of described sector
On the Axisymmetric Distributed Line that line is the soft pawl of described sector of described through hole.
The quick workpiece machining clamp of thin-wall part the most according to claim 1, it is characterised in that described cavity is stepped,
Wherein, the arc radius of the described cavity near described chuck side is less than the arc of the described cavity away from described chuck side
Radius.
The quick workpiece machining clamp of thin-wall part the most according to claim 2, it is characterised in that described through hole is counterbore.
The quick workpiece machining clamp of thin-wall part the most according to claim 3, it is characterised in that the quantity of the soft pawl of described sector
It it is 3.
The quick workpiece machining clamp of thin-wall part the most according to claim 1, it is characterised in that the main part of described chuck
For stainless steel, its top layer is doped with additive, and described additive is carbon fiber, ceramic fibre, titanium nitride, calcium carbonate
In at least one.
The quick workpiece machining clamp of thin-wall part the most according to claim 7, it is characterised in that described additive is in main body
Doping depth is not more than 0.5mm.
9. according to the quick workpiece machining clamp of the thin-wall part described in claim 7 or 8, it is characterised in that described additive is being led
Surface layer is uniformly distributed or from outward appearance to inner essence successively decreases.
The quick workpiece machining clamp of thin-wall part the most according to claim 9, it is characterised in that be carbon in described additive
When fiber, ceramic fibre, titanium nitride, calcium carbonate, its surface is all pre-formed with intermediate layer, and described intermediate layer includes at least one of which
Aluminum middle layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684907.3A CN106216724A (en) | 2016-08-17 | 2016-08-17 | A kind of quick workpiece machining clamp of thin-wall part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610684907.3A CN106216724A (en) | 2016-08-17 | 2016-08-17 | A kind of quick workpiece machining clamp of thin-wall part |
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| CN106216724A true CN106216724A (en) | 2016-12-14 |
Family
ID=57553343
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610684907.3A Pending CN106216724A (en) | 2016-08-17 | 2016-08-17 | A kind of quick workpiece machining clamp of thin-wall part |
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| CN106944637A (en) * | 2017-03-21 | 2017-07-14 | 鹤山联塑实业发展有限公司 | Frock clamp and its clamping method for plastic thin wall socket pipe member Vehicle Processing |
| CN110757094A (en) * | 2019-10-31 | 2020-02-07 | 中航飞机起落架有限责任公司 | Turning method of cylindrical stepped thin-wall part |
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Application publication date: 20161214 |