CN101979229A - Method for flexibly clamping fragile composite ceramic material - Google Patents
Method for flexibly clamping fragile composite ceramic material Download PDFInfo
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- CN101979229A CN101979229A CN 201010265243 CN201010265243A CN101979229A CN 101979229 A CN101979229 A CN 101979229A CN 201010265243 CN201010265243 CN 201010265243 CN 201010265243 A CN201010265243 A CN 201010265243A CN 101979229 A CN101979229 A CN 101979229A
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Abstract
The invention discloses a method for flexibly clamping a fragile composite ceramic material. The method comprises the following steps of: (1) preparing a product blank and a product fixing clip which is matched with the first side face of the product blank, wherein the fixing clip comprises a chuck part which is matched with a processed mechanical chuck, and a moulded surface part; (2) fixing the fixing clip on the processed mechanical chuck through the chuck part, adhering the first side face of the matching face of the product with the moulded surface of the clip by an adhesive, solidifying at the normal temperature and fixing on the clip; (3) machining the second side face of the product with a cutter; (4) removing the adhesive with solution and taking the product out; (5) fixing a product fixing clip which is matched with the second side face of the product blank to the processed mechanical chuck, adhering the second side face with the moulded surface of the clip by the adhesive and fixing on the clip; (6) cutting the first side face with the cutter; and (7) removing the adhesive with a solvent and taking the product out.
Description
Technical field
The invention belongs to ceramic material Machining Technology field, be specifically related to a kind of fragility composite ceramic material flexible clamping processing method.
Background technology
The SiO that quartz textile strengthens
2Base, Si
3N
4Fragility composite ceramic materials such as base, BN base are to study more Multifucntional electromagnetic wave transparent material in recent years, because its high temperature tolerance, good wave, thermal shock resistance and, be widely used at present high temperature resistant, anti-ly ablating, saturating wave antenna cover, antenna windows field to characteristics such as underbead crack are insensitive.
Though composite ceramic material excellent performance, because the not high (1.5g/cm of density
3～1.8g/cm
3), intrinsic characteristic such as loose structure, have intensity yielding, shortcoming that fragility is big on the low side, stressed.Simultaneously, antenna house, antenna windows product are the wave penetrate capability that reaches desirable, generally be designed to the thin-wall construction of high dimensional accuracy, and shape of product complexity, as antenna house is the cavity of bullet profile, antenna windows is box-like cavity, so the machining of composite ceramics need break through two technological difficulties, is specially:
1. composite ceramics machining fixture technology requires to improve the clamping positioning accuracy, avoids clamping deformation, even destroys product.
2. composite ceramics machining accuracy control technology requires the saturating corrugated of product wall thickness dimension tolerance minimum, and surface quality is good.
At brittle ceramic class process technology, installation way has the direct clamping of chuck, two kinds of the indirect clampings of chuck, and equipment processing such as general NC mill, car are adopted in processing, and condition enterprise preferably has the numerical control machining center that the energy real-time three-dimensional is measured, to guarantee machining accuracy.Directly clamping need be controlled clamping force, reduces cutting force, has risk of rupture coefficient height, yielding machining accuracy, the problem that production efficiency is low of influencing; Because the fragile material characteristic and the thin-wall construction of composite ceramics cause clamping very difficult, therefore the indirect clamping of many employings, by the design specialized anchor clamps, product is contained on the anchor clamps locatees, general adopt vacuum suction and compress locating surface special on the product carry out fastening, but have vacuum suction equipment complexity, poor reliability, complex-shaped product lacks the appropriate location face, clamping power deficiency, the problem that exists stress to concentrate.
Summary of the invention
The object of the invention is to provide a kind of fragility composite ceramic material flexible clamping processing method, realization zero clamping stress is avoided distortion, has the positioning accuracy height, clamping power is big to satisfy big cutting output, can be suitable for the characteristics of multiple complex product shape, reduce the risk of ceramic fracture, improved machining accuracy and production efficiency.
Technical scheme of the present invention: fragility composite ceramic material flexible clamping process steps of the present invention is as follows:
1) make the product blank, with suitable product first stationary fixture in product blank first side, first stationary fixture comprises dop part and the profile part that is complementary with the processing equipment chuck;
2) with product first stationary fixture by the dop partial fixing on the processing equipment chuck, behind the centering, adopt bonding way with suitable first side of product and the profile applying of first stationary fixture, normal temperature cure is fixed on first stationary fixture;
3) use cutter to finish the machining of product second side;
4) use solution that adhesive is removed, take out product;
5) adopt suitable product second stationary fixture of having processed with the product blank in second side, second stationary fixture comprises dop part and the profile part that is complementary with the processing equipment chuck, product second stationary fixture is fixed on the processing equipment chuck, behind the centering, adopt bonding way that the profile of product second side and second stationary fixture is fitted, normal temperature cure is fixed on second stationary fixture;
6) use cutter to finish the machining of product first side;
7) use solvent that adhesive is removed, take out product.
Further, described step 2) and the adhesive of step 5) adopt rubber adhesive, bondline thickness is 0.1～0.15mm.
Further, described step 2) and the adhesive normal temperature cure of step 5) be to be that 0.1～0.2Mpa environment carries out at pressure.
Further, the solvent of described step 4) and step 7) removal adhesive employing is an organic solvent.
Further, the profile of described first stationary fixture and second stationary fixture partly comprises binding face and gap portion, and binding face accounts for 20%～50% of profile part.
The invention has the advantages that:
(1) clamping is unstressed concentrates, and the contact location of any profile be because mismachining tolerance all can only be a contact or line contact, adopts that adhesive is bonding has realized the face contact, has avoided the stress that exists in the brittle ceramic product processing to concentrate;
(2) can realize big cutting output, bonding force can reach about 5MPa, and the cutting force that big cutting output is brought can not cause product to move, and has improved production efficiency;
(3) clamping does not have distortion, has realized product " zero " stress clamping, avoids distortion, guarantees machining accuracy;
(4) very suitable complex-shaped product clamping is especially suitable to the product of no plane positioning benchmark.
The present invention has improved composite ceramics product clamping stressing conditions, and the product precision can reach ± and 0.04, dimensional stability is good, and every product the micro-crack quality problems do not occur through X-ray examination, can satisfy the mass of system coherence request.
Description of drawings
Fig. 1 is first kind of embodiment antenna house outer mold surface processing schematic diagram.
Fig. 2 is a profile processing schematic diagram in first kind of embodiment antenna house.
Fig. 3 is a profile processing schematic diagram in second kind of embodiment antenna windows.
Fig. 4 is second kind of embodiment antenna windows outer mold surface processing schematic diagram.
The specific embodiment
The present invention selects suitable location profile according to product blank shape, size, designs and produces the identical anchor clamps of profile.Anchor clamps are fixed on the chuck, coated with adhesive on the profile of anchor clamps location, the control bondline thickness is bonded at the product blank on the anchor clamps normal temperature cure.By beating table measurement products datum level, adjust chuck and move chucking position, the centering product, finish machining after, use organic solution that adhesive is removed, take out product.
A kind of fragility composite ceramic material flexible clamping process steps of the present invention is as follows:
1) make the product blank, product first stationary fixture 2, the first stationary fixtures 2 suitable with product blank 1 first side 1a comprise dop part and the profile part that is complementary with the processing equipment chuck;
2) with product first stationary fixture 2 by the dop partial fixing on the processing equipment chuck, behind the centering, adopt the profile applying of bonding way with suitable first side 1a with first stationary fixture 2 of product, normal temperature cure is fixed on first stationary fixture 2;
3) use cutter to finish the machining of the product second side 1b;
4) use solution that adhesive is removed, take out product;
5) adopt suitable product second stationary fixture of having processed with product blank 13 of the second side 1b, second stationary fixture 3 comprises dop part and the profile part that is complementary with the processing equipment chuck, second stationary fixture 3 is fixed on the processing equipment chuck, behind the centering, adopt bonding way that the profile of the product second side 1b and second stationary fixture 3 is fitted, normal temperature cure is fixed on second stationary fixture 3;
6) use cutter to finish the machining of the product first side 1a face;
7) use solvent that adhesive is removed, take out product.
Further, described step 2) and the adhesive of step 5) adopt rubber adhesive, bondline thickness is 0.1～0.15mm.
Further, described step 2) and the adhesive normal temperature cure of step 5) be to be that 0.1～0.2Mpa environment carries out at pressure.
Further, the solvent of described step 4) and step 7) removal adhesive employing is an organic solvent.
Further, the profile of described first stationary fixture 2 and second stationary fixture 3 partly comprises binding face and gap portion, and binding face accounts for 20%～50% of profile part.
The present invention adopts indirect clamping: manufacture and design special fixture, anchor clamps are fixed on the chuck, behind the centering, product is fixed on the anchor clamps again;
Special Clamps Design: according to shape of product, make the identical anchor clamps of profile, rely on the profile location;
Adopt bonding way that product is fixed on the anchor clamps: coated with adhesive on the profile of anchor clamps location, the control bondline thickness is bonded at product on the anchor clamps normal temperature cure;
Centering product:, adjust chuck and move chucking position, the centering product by beating table measurement products datum level;
Use cutter to finish machining;
Use extraordinary solution that adhesive is removed, take out product.
As Fig. 1, Fig. 2:
Embodiment 1:SiO
2f/ SiO
2The processing of antenna house flexible clamping.
Among the figure: the 1st, processed product, 1a are first sides of product, 1b is second side of product; The 2nd, product first stationary fixture, 2a are the bonding binding faces, and 2b is a gap portion, and 2c is the dop part; The 3rd, product second stationary fixture, 3a are the bonding binding faces, and 3b is a gap portion, and 3c is the dop part.
As Fig. 1: at first process the outer mold surface second side 1b, with first stationary fixture, 2 clampings on chuck, adhesive is coated on the binding face 2a of anchor clamps, antenna house 1 is enclosed within on first stationary fixture 2, the first side 1a and first stationary fixture, 2 profiles bonding being integral of fitting is under 0.1～0.2Mpa environment after the normal temperature cure, with cutter making antenna cover outer mold surface second side 1b and the large end face at pressure, soak with organic solvent after finishing, will take off antenna house after the adhesive dissolving;
As Fig. 2: the profile first side 1a in the processing, antenna house 1 is packed in second stationary fixture 3, with product second side 1b and second stationary fixture, 3 binding face 3a applying, be normal temperature cure under 0.1～0.2Mpa environment at pressure, be fixed on second stationary fixture 3;
After bonding being integral, the profile first side 1a in the cutting behind the benchmark of centering large end face location, finish processing after, take off antenna house behind the dissolving adhesive.By eventually inspection of size, antenna house wall thickness precision can reach ± and 0.04, opening circularity reaches 0.05.
Embodiment 2: the processing of silicon nitride antenna windows flexible clamping:
Antenna windows be shaped as box-like cavity, adopt clamping twice.
As Fig. 3, Fig. 4: among the figure: among the figure: the 1st, processed product, 1a are first sides of product, 1b is second side of product; The 2nd, product first stationary fixture, 2a are the bonding binding faces, and 2b is a gap portion, and 2c is the dop part; The 3rd, product second stationary fixture, 3a are the bonding binding faces, and 3b is a gap portion, and 3c is the dop part.
Fig. 3: the profile first side 1a at first processing, with first stationary fixture, 2 clampings on chuck, adhesive is coated on the binding face 2a of first stationary fixture 2, antenna exterior window trim 1 is embedded on first stationary fixture 2, the first side 1a and first stationary fixture, 2 profiles bonding being integral of fitting is under 0.1～0.2Mpa environment after the normal temperature cure at pressure, with i.e. first side 1a and the large end face of profile in the cutter making antenna exterior window trim, soak with organic solvent after finishing, will take off antenna house after the adhesive dissolving.
Process outer mold surface 1b as Fig. 4, with second stationary fixture, 3 clampings on chuck, adhesive is coated on the binding face 3a of anchor clamps, antenna windows 1 is enclosed within on second stationary fixture 3, the first side 1a and second stationary fixture, 3 profiles bonding being integral of fitting is under 0.1～0.2Mpa environment after the normal temperature cure at pressure, with the cutter making antenna i.e. second side 1b of profile outside window, soak with organic solvent after finishing, will take off antenna house after the adhesive dissolving; Detect by X ray, micro-crack does not appear in antenna windows boss edge.
It is minimum that organic solvent adopts alcohol to pollute.
The foregoing description only provides the embodiment of two machined surfaces.Be not difficult to find out that the present invention also is fit to a plurality of machined surfaces,, design corresponding stationary fixture, all can realize as long as rationally separate machined surface.Therefore, the invention is not restricted to the foregoing description.
In sum, core of the present invention is to adopt bonding way that product is fixed on the anchor clamps.Therefore, every employing bonding way is fixed on any change on the anchor clamps with product, all belongs to protection scope of the present invention.
Claims (5)
1. fragility composite ceramic material flexible clamping processing method, step is as follows:
1) make the product blank, with suitable product first stationary fixture (2) in product blank (1) first side (1a), first stationary fixture (2) comprises dop part and the profile part that is complementary with the processing equipment chuck;
2) product first stationary fixture (2) is passed through the dop partial fixing on the processing equipment chuck, behind the centering, adopt bonding way to be fitted with the profile of first stationary fixture (2) in suitable first side (1a) of product, normal temperature cure is fixed on first stationary fixture (2);
3) use cutter to finish the machining of product second side (1b);
4) use solution that adhesive is removed, take out product;
5) adopt suitable product second stationary fixture of having processed with product blank (1) (3) in second side (1b), second stationary fixture (3) comprises dop part and the profile part that is complementary with the processing equipment chuck, second stationary fixture (3) is fixed on the processing equipment chuck, behind the centering, adopt bonding way to be fitted with the profile of second stationary fixture (3) in second side (1b) of product, normal temperature cure is fixed on second stationary fixture (3);
6) use cutter to finish the machining of product first side (1a);
7) use solvent that adhesive is removed, take out product.
2. fragility composite ceramic material flexible clamping processing method according to claim 1 is characterized in that: described step 2) and the adhesive of step 5) adopt rubber adhesive, bondline thickness is 0.1～0.15mm.
3. fragility composite ceramic material flexible clamping processing method according to claim 1 and 2 is characterized in that: described step 2) and the adhesive normal temperature cure of step 5) be to be that 0.1～0.2Mpa environment carries out at pressure.
4. fragility composite ceramic material flexible clamping processing method according to claim 1 and 2 is characterized in that: the solvent that step 4) and step 7) are removed the adhesive employing is an organic solvent.
5. fragility composite ceramic material flexible clamping processing method according to claim 1 and 2, it is characterized in that: the profile of first stationary fixture (2) and second stationary fixture (3) partly comprises binding face and gap portion, and binding face accounts for 20%～50% of profile part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010265243 CN101979229A (en) | 2010-08-27 | 2010-08-27 | Method for flexibly clamping fragile composite ceramic material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010265243 CN101979229A (en) | 2010-08-27 | 2010-08-27 | Method for flexibly clamping fragile composite ceramic material |
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| CN101979229A true CN101979229A (en) | 2011-02-23 |
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| CN 201010265243 Pending CN101979229A (en) | 2010-08-27 | 2010-08-27 | Method for flexibly clamping fragile composite ceramic material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109093475A (en) * | 2017-06-20 | 2018-12-28 | 中国航发商用航空发动机有限责任公司 | A kind of thinning technique of slice work-piece |
| CN109702605A (en) * | 2018-12-10 | 2019-05-03 | 航天特种材料及工艺技术研究所 | A kind of special-shaped ceramics antenna house processing unit (plant) and method |
| CN110293491A (en) * | 2019-06-25 | 2019-10-01 | 湖北三江航天江北机械工程有限公司 | The static determinacy adhesive tool and its method of the compound cover of ceramic base and metal capel |
| CN112873586A (en) * | 2021-01-18 | 2021-06-01 | 天琪(广东)科技发展有限公司 | Fixing device is used in processing of zirconia ceramic parts |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109093475A (en) * | 2017-06-20 | 2018-12-28 | 中国航发商用航空发动机有限责任公司 | A kind of thinning technique of slice work-piece |
| CN109702605A (en) * | 2018-12-10 | 2019-05-03 | 航天特种材料及工艺技术研究所 | A kind of special-shaped ceramics antenna house processing unit (plant) and method |
| CN110293491A (en) * | 2019-06-25 | 2019-10-01 | 湖北三江航天江北机械工程有限公司 | The static determinacy adhesive tool and its method of the compound cover of ceramic base and metal capel |
| CN110293491B (en) * | 2019-06-25 | 2021-07-06 | 湖北三江航天江北机械工程有限公司 | Static-fixed bonding tool and method for ceramic-based composite cover body and metal embedded ring |
| CN112873586A (en) * | 2021-01-18 | 2021-06-01 | 天琪(广东)科技发展有限公司 | Fixing device is used in processing of zirconia ceramic parts |
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Application publication date: 20110223 |