CN102343500A - High precision collimator and processing method thereof - Google Patents
High precision collimator and processing method thereof Download PDFInfo
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- CN102343500A CN102343500A CN2010102444297A CN201010244429A CN102343500A CN 102343500 A CN102343500 A CN 102343500A CN 2010102444297 A CN2010102444297 A CN 2010102444297A CN 201010244429 A CN201010244429 A CN 201010244429A CN 102343500 A CN102343500 A CN 102343500A
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Abstract
The invention discloses a high precision collimator and a processing method thereof. The high precision collimator comprises a collimator body, a first-class collimating aperture and three second-class collimating apertures. In the processing of the first-class collimating aperture, after the collimator body is processed, a grid through hole is formed in the collimator body through wire cutting; and a method for processing the second-class collimating apertures comprises the following steps of: mutually inserting a first tantalum sheet and a second tantalum sheet to obtain a grid hole; welding the mutually inserted tantalum sheets through laser, and putting into a mounting hole, wherein the mounting hole is formed in the collimator body after the collimator body is processed and is used for accommodating the mutually inserted tantalum sheets to form the second-class collimating aperture; and fixing the fixed connected tantalum sheets in the mounting hole in a gluing mode. The application range of the collimator is widened, and a foundation is laid for higher precision scientific detection.
Description
Technical field
The present invention relates to a kind of collimater, relate in particular to the processing method of a kind of high accuracy collimater and said high accuracy collimater.
Background technology
High accuracy collimater (depth of parallelism and perpendicularity precision can guarantee the collimater within 1 jiao of branch) is to be widely used in aerospace to survey; The key equipment in field such as pulsar navigation and medicine equipment; But its application principle is X ray is collimated and to be converted into deal with data through detector by collimater; Analyse scientifically; Wherein the optional material category of collimater internal grid structure is few; Requirement on machining accuracy is high; And the power of applied environment; Heat; Complicated conditions such as radiation; But each tame research institute processing technology is various at present; Reproducibility difference and machining accuracy are difficult to ensure, become the key issue of X ray Detection Techniques.
Current; China's developing Aeronautical aerospace industry of quickening one's step; Under numerous scientists' effort, obtained distinguished achievement; But survey this field at astronomical science and still belong to exploration and Preliminary development stage; And astronomical telescope, the effective detection means of satellite conduct and carrier become the forward position that present countries in the world fall over each other to study, and wherein the main physical target is to survey universe nova, black hole and dark matter etc.Aspect civilian scientific research, also the precision and the reproducibility of collimation device have proposed very high requirement for up-to-date medical device research such as Medical CT equipment etc.The pulsar navigation Study on Technology of rise in recent years is more got up close ties such as astronomical radiation detection and national defense and military, national economy.The main mode that astronomical radiation is surveyed is " collimater+detector " pattern, but the space X ray is collimated and is converted into deal with data through detector by collimater, and then analyses scientifically.Wherein the precision of collimater, dutycycle require height, and circumstance complications such as space background, power, heat, radiation, so the processing technology scheme of further investigation high accuracy collimater becomes extremely urgent scientific research task.
The application demand of collimater; Determined its Structural Design Requirement precision high and complicated; Main physical requires to have: according to the principle of astrosurveillance; Be through the detection of X ray being analyzed and the distribution of definite celestial X-ray source; Collimater is as the collimation passage of X ray; Require its collimating aperture inboard to form by metals such as certain thickness Cu, Ta, Au, zone and angle incident that light is limited with collimating aperture, thus make things convenient for detection study; And generally survey background and the dutycycle index all requires the quality of collimater as far as possible little, thus improving detection efficient, the lightweight of space flight and spatial constraints then require collimater quality and volume all to limit within the specific limits; Collimater and detector will mate use, and collimating aperture should be corresponding one by one with detector area, could accomplish detection process; The pointing accuracy of collimater is determining the detection accuracy of satellite, so the processing of collimater and installation accuracy requirement are very high; These requirements make collimater become the key and the vitals of a plurality of projects.Especially be the emphasis and the difficult point of collimater design and technical study for undersized collimating aperture processing technology and measuring technique.
In addition, the collimater of prior art generally all is designed to square grid hole (or claiming the grid through hole), to the effect of light or various ray realization collimation.But each tame research institute processing technology also is various at present; What wherein have is designed to bow-shaped structural with tantalum piece; As shown in Figure 1; The process in its formation square grid hole as shown in Figure 2; On the sidewall of collimating aperture, slot earlier; Arc tantalum piece pack the installing hole of collimating aperture into to form the square grid hole along groove successively, and the advantage of this scheme is that assembling is more convenient, and structural rigidity is good; It is arc that shortcoming is that tantalum piece will be processed into, and need annealing to reduce stress and concentrate, but distortion is bigger after the moulding, and the depth of parallelism is bad; Rounding (R angle) during arc tantalum piece moulding also can't be ignored, and the distance of the abutting edge between the R angle is bigger, so this method reproducibility is poor, and machining accuracy is difficult to ensure.
Summary of the invention
The object of the invention is the processing method that a kind of high accuracy collimater is provided, with the technical problem that reproducibility is poor, cost high and machining accuracy is difficult to ensure of the collimater processing method that solves prior art.
Another object of the present invention is for providing a kind of high accuracy collimater, with the technical problem that reproducibility is poor, cost high, precision is difficult to ensure of the high accuracy collimater that solves prior art.
For realizing above-mentioned purpose, technical scheme of the present invention is following:
A kind of processing method of high accuracy collimater; Said high accuracy collimater comprise the collimater body with at intrinsic four collimating apertures of said collimater; Comprise a first kind collimating aperture and three second type of collimating apertures in said four collimating apertures, the processing of said first kind collimating aperture is to machine the back at said collimater body on said collimater body, to form the grid through hole through the line cutting; The procedure of processing of said second type of collimating aperture is: step S1: first tantalum piece and second tantalum piece are carried out interfix formation grid hole; Step S2: through said first tantalum piece of laser weld after with interfix with after said second tantalum piece is fixedly connected; Insert in the installing hole; Said installing hole machines the back by said collimater body and on said collimater body, forms, and is used to install tantalum piece after the said interfix to form said second type of collimating aperture; Step S3: the tantalum piece after the mode of sticking with glue will be fixedly connected is fixed in said installing hole.
The processing method of high accuracy collimater of the present invention, preferred, step S1 comprises: step S11: cutting is used for first slot and second slot to inserting respectively on said first tantalum piece and said second tantalum piece; Step S12: by mold accomplish said first tantalum piece and second tantalum piece to inserting, form rectangular grid hole, vertical offside of said mold offers cannelure and the transverse groove that is used to insert first tantalum piece and second tantalum piece respectively with horizontal offside; In step S2, the top of laser weld first tantalum piece and the second tantalum piece infall.
The processing method of high accuracy collimater of the present invention, preferred, the material of said collimater body is a LY12 type aluminium alloy; Among the step S1; The specification of said grid hole is 1mm * 5.47mm, and the degree of depth is 52mm, and the thickness of said first tantalum piece and said second tantalum piece is 0.05mm.
The processing method of high accuracy collimater of the present invention, preferred, said first tantalum piece is the 1mm tantalum piece, and said second tantalum piece is the 5.47mm tantalum piece, and the length of said first slot is 14mm, and the length of said second slot is 38mm.
The processing method of high accuracy collimater of the present invention; Preferably; In step S3; Respectively between adjacent first tantalum piece and first tantalum piece, put into cross key, the longitudinal key that processes between second tantalum piece and second tantalum piece; Said cross key, longitudinal key are close to four sides of said installing hole inwall and are compressed said first tantalum piece and second tantalum piece, and the mode that sticks with glue is fixed in said inwall with the combining structure of tantalum piece and key; Perhaps, on said installing hole inwall, process grooving, along the said grooving said installing hole of packing into, and the mode that sticks with glue is fixed in said grooving with said tantalum piece two ends with the tantalum piece after being fixedly connected.
The processing method of high accuracy collimater of the present invention; Preferably; Carry out before the said laser weld; In said mold, calibrate said grid hole through in said grid hole, putting into standard gauge block; Still in said grid hole, said gauge block is lower than said grid hole top certain distance after inserting said grid hole to said standard gauge block when carrying out said laser weld.
Another object of the present invention is realized by following technical scheme:
A kind of high accuracy collimater; Said high accuracy collimater comprises that the collimater body reaches at intrinsic four collimating apertures of said collimater; Comprise a first kind collimating aperture and three second type of collimating apertures in said four collimating apertures; Said first kind collimating aperture has the grid through hole that the line cutting processing forms; Second type of collimating aperture comprises first tantalum piece and second tantalum piece after the interfix of installing in installing hole and the installing hole, and said first tantalum piece is fixedly connected through laser weld with said second tantalum piece and is gluing in said installing hole.
High accuracy collimater of the present invention; Preferably; Between adjacent first tantalum piece and first tantalum piece, be provided with cross key, longitudinal key between second tantalum piece and second tantalum piece; Said cross key, longitudinal key are close to four sides of installing hole inwall and are compressed said first tantalum piece and second tantalum piece, and the combining structure of tantalum piece and key is gluing in said installing hole inwall; Perhaps, have grooving at said installing hole inwall, the tantalum piece two ends after the fixed connection are gluing in said grooving.
High accuracy collimater of the present invention; Preferably; The material of said collimater body is a LY12 type aluminium alloy; The specification of the grid through hole of said first kind collimating aperture is 4.55mm * 4.55mm; The specification of the grid hole of said second type of collimating aperture is 1mm * 5.47mm; The degree of depth is 52mm, and the thickness of said first tantalum piece and said second tantalum piece is 0.05mm.
High accuracy collimater of the present invention, preferred, have first slot and second slot that are used for inserting on said first tantalum piece and said second tantalum piece respectively; Four the bight grid holes and the said installing hole of said second type of collimating aperture are one-body molded, and said first tantalum piece is the 1mm tantalum piece, and said second tantalum piece is the 5.47mm tantalum piece, and the length of said first slot is 14mm, and the length of said second slot is 38mm.
Beneficial effect of the present invention is; Collimater of the present invention is small dimension, high accuracy collimater; It is the technology of producing high-precision collimater with the mode of simple economy in batches; Realized with process simple to operation processing and can reach its required precision; Processing method of the present invention is reproducible, interchangeability good, has solved the high and portable poor defective of the existing processing charges of collimater processing method of prior art.Innovation part of the present invention is also not machine at present the collimater of small size of the present invention, high accuracy lattice structure both at home and abroad.The present invention has widened the application of collimater, for more high-precision scientific exploration lays the foundation.
Description of drawings
Fig. 1 is the used arc tantalum piece of processing collimater in the prior art.
Fig. 2 is the installation diagram of arc tantalum piece collimater of the prior art.
Fig. 3 is the visual field layout of high accuracy collimater of the present invention.
Fig. 4 is the collimater body sketch map of the high accuracy collimater of first embodiment of the invention.
Fig. 5 A is the sketch map of the 1mm tantalum piece of high accuracy collimater of the present invention.
Fig. 5 B is the B portion enlarged diagram among Fig. 5 A.
Fig. 6 A is the sketch map of the 5.47mm tantalum piece of high accuracy collimater of the present invention.
Fig. 6 B is the A portion enlarged diagram among Fig. 6 A.
Fig. 7 is the tantalum piece interfix sketch map of high accuracy collimater of the present invention.
Fig. 8 is the tantalum piece interfix process sketch map of high accuracy collimater of the present invention.
Fig. 9 is the overall structure assembling sketch map of high accuracy collimater of the present invention.
Figure 10 is the installing hole undercut slots sketch map of the high accuracy collimater of second embodiment of the invention.
Figure 11 is the collimating aperture dimensional discrepancy sketch map of the processing method of the embodiment of the invention.
Figure 12 is the parallelism precision sketch map of the processing method of the embodiment of the invention.
The specific embodiment
The exemplary embodiments that embodies characteristic of the present invention and advantage will be described in detail in following explanation.Be understood that the present invention can have various variations on various embodiment, its neither departing from the scope of the present invention, and explanation wherein and accompanying drawing be when the usefulness that explain in itself, but not in order to restriction the present invention.
The high accuracy collimater of the embodiment of the invention is mainly used in hard X-ray Modulation Telescope low energy region telescope project, needs to consider the structure of installation and visual field size design collimater, and visual field is wherein confirmed through the imaging simulation.This telescopical visual field layout as shown in Figure 3, among Fig. 3, two rows are eight collimaters altogether.Four visual fields of the collimater in the lower right corner are the visual field of (60 ° * 2.5 °); Seven collimaters except that the collimater in the lower right corner, the visual field upper left, down left and the bottom right of each collimater is the visual field of (1.1 ° * 6 °); The upper right visual field that following row plays on a left side the 3rd collimater is to block the visual field entirely.And; Four collimaters of last row and two collimaters that collimater is a same model of following row left side; The upper right visual field of each collimater of these six collimaters is the visual field of (5 ° * 5 °); The processing method of the high accuracy collimater of embodiments of the invention; It mainly is exactly the collimater of processing this type; The collimater of below mentioning is the collimater of the type, and it is upper left, a left side is following and the visual field, bottom right is the visual field of (1.1 ° * 6 °), and upper right visual field is the visual field of (5 ° * 5 °).
As shown in Figure 4, collimater of the present invention comprises collimater body (or claiming the collimater shell) 2 and collimating aperture 1, and collimater body 2 bottoms are collimater mounting flange 21.Collimating aperture (i.e. second type of collimating aperture) for (1.1 ° * 6 °) visual field of processing this collimater; Need in collimating aperture 1, processing wall thickness 0.05mm, hole dimension be the lattice structure of 1mm * 5.47mm; And the height of collimating aperture 1 is 52mm; Directly machined or line cutting processing are that the one material is infeasible; Must adopt the foil material of processes 0.05mm such as extension, assemble completion again.
Carry out first being processed, needing the collimation device body 1 and the material of the collimation screen that forms grid hole to select.
LY12 type high-strength rigid aluminium alloy has the advantage that light weight, mechanical performance are high, processing cost is low, corrosion resistance is good, is Aero-Space materials commonly used.Therefore, collimater body 2 can adopt it to do whole the manufacturing.
Tantalum is the grey black non-ferrous metal, and ductility is arranged, 2996 ℃ of fusing points, and 5425 ℃ of boiling points, density 16.6 gram/cubic centimetres, quality is very hard, and hardness can reach 6-6.5 (Mohs' hardness), is only second to tungsten and rhenium, occupies the 3rd.Tantalum is rich in ductility, can pull into filament, can make thin foil.Its thermal coefficient of expansion is also very little.In addition, its toughness is very strong, and is also more excellent than copper.
Take all factors into consideration physical property, mechanical performance, material cost and difficulty of processing, plumbous and tantalum is the preferred material of collimater.Plumbous and tantalum belongs to heavy metal, and density is very high, and the collimater monomer weight that all uses them to make is inevitable very big.Wherein tantalum has the X ray good absorbing, and hardness is big, and advantages such as good rigidly physically require to increase dutycycle simultaneously as far as possible, therefore take all factors into consideration and select for use the thick tantalum piece of 0.05mm as the collimation screen.
Therefore, the high accuracy collimater processing method of the embodiment of the invention is made collimater body 2 with LY12, as the collimation screen, is the best of breed of realization collimater general technical index with the thick tantalum piece of 0.05mm.
Selected after the above-mentioned material; The processing method of high accuracy collimater of the present invention; As shown in Figure 4; Will be according to the drawing of collimater body 2; The processing of device body 2 collimates; And form four collimating apertures 1; Four collimating apertures comprise a first kind collimating aperture 1 and three second type of collimating apertures 1; Design according to the visual field; The size of the grid hole that the visual field of (1.1 ° * 6 °) is corresponding is 1mm * 5.47mm; The corresponding aforesaid grid hole of grid through hole 11(in the visual field of (5 ° * 5 °) also is a through hole, adopts different titles for grid (leading to) hole of distinguishing two kinds of specifications) size be 4.55mm * 4.55mm.Visual field for (1.1 ° * 6 °) is that the method that is utilized in the tantalum piece after the installation interfix in the installing hole that is processed to form after the collimater body machines forms; It is the tantalum piece after collimating aperture structurally comprises installing hole and interfix; Take the directly way of processing for the visual field of (5 ° * 5 °); Promptly need not insert tantalum piece; Directly line cuts into the hole dimension of 4.55mm * 4.55mm, and wall thickness is 0.2mm between the hole.The benefit of doing like this is that machining accuracy is high, and one of them collimating aperture need not be installed tantalum piece again, and the flatness and the depth of parallelism are good; But the collimating aperture material of the visual field of (5 ° * 5 °) is LY-12 type high-strength rigid aluminium alloy entirely, has not had tantalum piece, and the X-ray absorbability is poor slightly, and each collimating aperture spacing is bigger.
The processing method of high accuracy collimater of the present invention, the tantalum piece interfix is accomplished by mold, and in mold, accomplishes the calibration of grid hole, and the tantalum piece after the interfix is packed into behind the installing hole, needs fix tantalum piece with two kinds of keys.Therefore; Before carrying out following steps; Need have and make mold, processing and be used for the calibration grid checkerwork cell standard gauge block of (or claiming hole, visual field) (specification is 1mm * 5.47mm * 51.5mm), process and cut tantalum piece and form said two kinds of keys and (be respectively longitudinal key, specification 1.5mm * 5.47mm * 52mm; Cross key, specification are the step of 1.5mm * 1mm * 52mm), should be noted that between these four steps, and these four steps and processing collimater body and form between the step of installing hole, do not have whose restriction after whom earlier.And under the situation that forms batch machining, mold, standard gauge block can be repeatedly used, and therefore can cut down finished cost.
Form crisscross lattice structure, the present invention adopts tantalum piece to realize inserting mode, because the thick tantalum piece of 0.05mm deformed damaged very easily, actual process operation difficulty is very big.
Install on the collimater body between the thick tantalum piece of 0.05mm, the tantalum piece and will need on tantalum piece, to offer slot to inserting, said slot is a through slot; Simultaneously, two tantalum pieces are accomplished in mold and are inserted installing hole then to inserting, thereby also will process grooving on the inwall of mold.And be to guarantee precision, the width of grooving and slot should not surpass 0.07mm, so wire cutting technology requires height.Can adopt AR2300 NC wirecut EDM machine (for example peace moral in Beijing is built this model line cutting off machine that neat DEC produces); Its precision can reach 0.01mm; Can select the middling speed wire for use, carry out cutting operation with the molybdenum filament line of engagement cutting off machine of 0.07mm.
Shown in Fig. 5 A-Fig. 6 B, offer slot at first tantalum piece and second tantalum piece respectively.First tantalum piece shown in Fig. 5 A and Fig. 5 B is the 1mm tantalum piece, and promptly the spacing of first slot on it is 1mm, and the length of first slot on it is 14mm.Second tantalum piece shown in Fig. 6 A and Fig. 6 B is the 5.47mm tantalum piece, and promptly the spacing of second slot on it is 5.47mm, and the length of second slot on it is 38mm.Not being both of slot spacing in order to satisfy the requirement of formed grid hole specification; The difference of slot length then is in order to increase structural strength and the rigidity after the interfix; And on the more sparse tantalum piece of slot, also be easy to offer long slot, be convenient to the processing of slot.Slot length also can have other different values, and for example the length of first slot and second slot all can than value such as getting 10: 42,17: 35,20: 32,24: 28 respectively; The length of certain first slot and second slot also can equate, in addition also the length of first slot greater than the length of second slot.
The interfix of tantalum piece will be by means of mold; The main effect of mold is exactly to imitate installing hole; Therefore mold need have a space similar with the installing hole specification; Can be referred to as " imitative installing hole "; The height in this space can equal the height of collimating aperture; Be 52mm, and its long and wide (perhaps claiming longitudinal length and lateral length), can be slightly less than the length of installing hole and wide.Mold can be made the apperance of similar collimater, has four installing holes, also can only have an installing hole, and the material of mold can be selected and collimater body identical materials.Be processed with grooving on the inwall of said imitative installing hole, earlier first tantalum piece inserted said imitative installing hole along its grooving, first slot of first tantalum piece up during insertion; Then second tantalum piece is prolonged its grooving and insert said imitative installing hole, second slot of second tantalum piece is down to inserting first slot of first tantalum piece, shape such as Fig. 7 and shown in Figure 8 after the part tantalum piece inserts during insertion.The rectangular grid hole of accomplishing through tantalum piece interfix method is a standard, does not have rounding, meets the physics requirement in collimation grid hole.
All insert the imitative installing hole of said mold at all tantalum pieces after; The operation of calibrating; The standard gauge block that had before processed is put into the grid hole that forms after the tantalum piece interfix successively; If all standard gauge blocks all can be put into smoothly; The perpendicularity and the depth of parallelism that grid hole then is described meet the demands; Simultaneously, the bending that forms can be with the tantalum piece interfix time of inserting also of standard gauge block is calibrated.Certainly, the processing method of high accuracy collimater of the present invention, the process of its calibration can not carried out in mold yet, and in the installing hole of collimater, carry out.
When showing that through calibration grid hole meets the demands, be in no hurry to take out said standard gauge block, but carry out the operation of laser weld earlier.At this moment; Thin-walled lattice structure in the installing hole forms the frame structure that can effectively support by rigidity and the enough interfix tantalum pieces of intensity; But the connectivity problem between first tantalum piece and second tantalum piece can produce again, fills the loss that any excess stock all can cause the collimater dutycycle on the seam because connect.The processing method of high accuracy collimater of the present invention adopts the laser weld mode to fix tantalum piece, and method for laser welding need not add scolder, adopts the self-dissolving mode, can reach firm welding purpose, welding jail, difficult drop-off; Because need not add scolder, therefore can not cause the loss of collimater dutycycle.When carrying out laser weld, any two form the tantalum piece that intersects, and only need the top of its cross spider of welding, can guarantee the intensity of its fixed connection.The welding current of laser needs to debug according to actual conditions.
When welding; Said standard gauge block is to be positioned at grid hole; The specification of standard gauge block is 1mm * 5.47mm * 51.5mm; It highly is slightly less than the height of collimating aperture; The benefit of doing like this is to play the effect of calibration tantalum piece; The distance that stays 0.5mm again makes things convenient for laser weld, prevents that welding standard gauge block can't extract.
After the step of above-mentioned calibration and laser weld is accomplished; Tantalum piece after will being fixedly connected again takes out from mold together with standard gauge block; Vertically put into installing hole; Like Fig. 4 and shown in Figure 9; Four bight grids 12 in the installing hole also are to process and put into installing hole in advance, or integrated with installing hole.After the tantalum piece structure that assembles inserted said installing hole together with standard gauge block; The cross key 15 that processes is in advance put into first tantalum piece respectively with longitudinal key 16; Between second tantalum piece; Cross key 15 and longitudinal key 16 are close to four sides of collimating aperture inwall; Adjust the position between tantalum piece and the key; Through cross key 15; Longitudinal key 16 is respectively with the first parallel tantalum piece; Second tantalum piece compresses; Take out said standard gauge block; With glue tantalum piece and key (are comprised cross key 15 and longitudinal key 16; Down together); Between tantalum piece and the installing hole inwall; Be fixedly connected between key and the installing hole inwall, the combining structure that also is about to tantalum piece and key is fixed in the installing hole inwall; Be fixedly connected with the installing hole inwall, promptly be equivalent to be fixedly connected with collimater body 2.Selected glue can be the rubber toughened type epoxy resin of E2019.
Accomplish after the gluing step, a complete collimater has just machined.
The above gluing mode in installing hole of the tantalum piece with after the interfix can be called " key fixed form ", in addition, can also pass through " grooving mode ", and the tantalum piece after the combination is gluing in installing hole.If adopt " grooving mode "; As shown in figure 10; Then the internal diameter of installing hole should be suitable with the internal diameter of mold; On the installing hole inwall, be processed with grooving; Said grooving comprises transection slot 17 and slitting slot 18; Be spaced apart 1mm between the transection slot 17; Be spaced apart 5.47mm between the slitting slot; After the step of above-mentioned calibration and laser weld is accomplished; Again the tantalum piece after fixedly connected is taken out from mold together with standard gauge block; Vertically put into installing hole along said grooving, with glue the two ends of tantalum piece are fixed in the grooving then, just accomplished fixedlying connected between tantalum piece and the installing hole after fixedly connected.
Both compare " key fixed form " and " grooving mode ", and the former is without grooving, and the tantalum piece of introducing after key will be fixedly connected is assemblied in said installing hole, fixes with glue at last; The latter need not process key, is at installing hole inwall processing grooving, and the tantalum piece after will being fixedly connected along grooving is assemblied in said installing hole, but also fixes with glue at last; The collimater line cutting processing equipment that is exactly this dual mode in addition is different, during the key fixed form needs the wire cutting equipment cooperate the molybdenum filament of 0.07mm carry out cutting operation just can, to the machining accuracy and the installation accuracy requirement height of key; The collimater of grooving mode so linear cutting equipment is required height, need cooperate the copper wire of 0.05mm process said grooving owing to there is not key with the silk thread cutting equipment of being careful.
As shown in Figure 9; The collimater high accuracy collimater of the present invention in other words that machines through high accuracy collimater processing method of the present invention; Has following structure; Said high accuracy collimater comprises collimater body 2 and collimating aperture 1; Comprise a first kind collimating aperture and three second type of collimating apertures in four collimating apertures 1; First kind collimating aperture 1 has the grid through hole 11 that the line cutting processing forms; Second type of collimating aperture 1 comprises first tantalum piece and second tantalum piece after the interfix of installing in installing hole and the installing hole; Said first tantalum piece be fixedly connected through laser weld after the said second tantalum piece interfix forms grid hole; Under the situation of processing with " key fixed form "; Like Fig. 4 and shown in Figure 9; The high accuracy collimater of first embodiment of the invention; Between adjacent first tantalum piece and first tantalum piece; Be provided with cross key 15 between second tantalum piece and second tantalum piece; Longitudinal key 16; Said cross key 15; Longitudinal key 16 is close to four sides of installing hole inwall and is compressed said first tantalum piece and second tantalum piece, and the combining structure of tantalum piece and key is gluing in said installing hole inwall; Under the situation of processing with " grooving mode ", as shown in figure 10, the installing hole inwall has transverse groove 17 and cannelure 18, and the tantalum piece two ends after the fixed connection are gluing respectively in transverse groove 17 and cannelure 18.
Said grid hole is the rectangle grid hole, has first slot and second slot that are used for inserting on said first tantalum piece and said second tantalum piece respectively; Four the bight grid holes and the said installing hole of said second type of collimating aperture are one-body molded.The specification of the grid through hole 11 of said first kind collimating aperture is 4.55mm * 4.55mm, and the specification of the grid hole of said second type of collimating aperture is 1mm * 5.47mm, and the degree of depth is 52mm, and the thickness of said first tantalum piece and said second tantalum piece is 0.05mm.Said first tantalum piece is the 1mm tantalum piece, and said second tantalum piece is 5.47mm, and the length of said first slot is 14mm, and the length of said second slot is 38mm.
Introduce the high accuracy collimater that the processing method of high accuracy collimater of the present invention processes and the precision measure of high accuracy collimater of the present invention at last.Said precision measure comprises perpendicularity, flatness and tantalum piece and the perpendicularity of collimater mounting flange 21 and the depth of parallelism between the tantalum piece of utilizing various apparatus measures collimaters.
The high accuracy collimater that the processing method of high accuracy collimater of the present invention is processed and the precision analysis result of high accuracy collimater of the present invention such as Figure 11 and shown in Figure 12.Figure 11 refers to the precision of collimating aperture dimensional discrepancy, and Figure 12 refers to the precision of the depth of parallelism of tantalum piece insertion.
Can utilize autocollimator and parallel light tube to measure the depth of parallelism and perpendicularity that tantalum piece is installed.Data after the measurement as shown in figure 11, MSD maximum standard deviation is 0.05mm, lowest standard deviation is 0.0159mm, Figure 11 is the histogram that utilizes measurement data to do.As shown in figure 12, visible maximum parallel deviation value is 0.29mm from data, and minimum of a value is 0.0708mm; Mean value 0.0999mm, MSD maximum standard deviation is 0.064mm, lowest standard deviation is 0.022mm.
Can be known that by above data the precision of collimating aperture of the present invention is 0.05mm, parallelism precision is 0.0999mm.The requirement on machining accuracy that meets the high accuracy collimater.
Technical scheme of the present invention is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching of under the situation that does not break away from appended scope of the present invention that claim disclosed of the present invention and spirit, being done, and all belong within the protection domain of claim of the present invention.
Claims (10)
1. the processing method of a high accuracy collimater; Said high accuracy collimater comprise the collimater body with at intrinsic four collimating apertures of said collimater; It is characterized in that; Comprise a first kind collimating aperture and three second type of collimating apertures in said four collimating apertures, the processing of said first kind collimating aperture is to machine the back at said collimater body on said collimater body, to form the grid through hole through the line cutting; The procedure of processing of said second type of collimating aperture is:
Step S1: first tantalum piece and second tantalum piece are carried out interfix formation grid hole;
Step S2: through said first tantalum piece of laser weld after with interfix with after said second tantalum piece is fixedly connected; Insert in the installing hole; Said installing hole machines the back by said collimater body and on said collimater body, forms, and is used to install tantalum piece after the said interfix to form said second type of collimating aperture;
Step S3: the tantalum piece after the mode of sticking with glue will be fixedly connected is fixed in said installing hole.
2. the processing method of high accuracy collimater as claimed in claim 1 is characterized in that, step S1 comprises:
Step S11: cutting is used for first slot and second slot to inserting respectively on said first tantalum piece and said second tantalum piece;
Step S12: by mold accomplish said first tantalum piece and second tantalum piece to inserting, form rectangular grid hole, vertical offside of said mold offers cannelure and the transverse groove that is used to insert first tantalum piece and second tantalum piece respectively with horizontal offside;
In step S2, the top of laser weld first tantalum piece and the second tantalum piece infall.
3. the processing method of high accuracy collimater as claimed in claim 1; It is characterized in that; The material of said collimater body is a LY12 type aluminium alloy; Among the step S1; The specification of said grid hole is 1mm * 5.47mm; The degree of depth is 52mm, and the thickness of said first tantalum piece and said second tantalum piece is 0.05mm.
4. the processing method of high accuracy collimater as claimed in claim 3 is characterized in that, said first tantalum piece is the 1mm tantalum piece, and said second tantalum piece is the 5.47mm tantalum piece, and the length of said first slot is 14mm, and the length of said second slot is 38mm.
5. the processing method of high accuracy collimater as claimed in claim 2; It is characterized in that; In step S3; Respectively between adjacent first tantalum piece and first tantalum piece, put into cross key, the longitudinal key that processes between second tantalum piece and second tantalum piece; Said cross key, longitudinal key are close to four sides of said installing hole inwall and are compressed said first tantalum piece and second tantalum piece, and the mode that sticks with glue is fixed in said inwall with the combining structure of tantalum piece and key;
Perhaps, on said installing hole inwall, process grooving, along the said grooving said installing hole of packing into, and the mode that sticks with glue is fixed in said grooving with said tantalum piece two ends with the tantalum piece after being fixedly connected.
6. the processing method of high accuracy collimater as claimed in claim 5; It is characterized in that; Carry out before the said laser weld; In said mold, calibrate said grid hole through in said grid hole, putting into standard gauge block; Still in said grid hole, said gauge block is lower than said grid hole top certain distance after inserting said grid hole to said standard gauge block when carrying out said laser weld.
7. high accuracy collimater; It is characterized in that; Said high accuracy collimater comprises that the collimater body reaches at intrinsic four collimating apertures of said collimater; Comprise a first kind collimating aperture and three second type of collimating apertures in said four collimating apertures; Said first kind collimating aperture has the grid through hole that the line cutting processing forms; Second type of collimating aperture comprises first tantalum piece and second tantalum piece after the interfix of installing in installing hole and the installing hole, and said first tantalum piece is fixedly connected through laser weld with said second tantalum piece and is gluing in said installing hole.
8. high accuracy collimater as claimed in claim 7; It is characterized in that; Between adjacent first tantalum piece and first tantalum piece, be provided with cross key, longitudinal key between second tantalum piece and second tantalum piece; Said cross key, longitudinal key are close to four sides of installing hole inwall and are compressed said first tantalum piece and second tantalum piece, and the combining structure of tantalum piece and key is gluing in said installing hole inwall;
Perhaps, have grooving at said installing hole inwall, the tantalum piece two ends after the fixed connection are gluing in said grooving.
9. like claim 7 or 8 described high accuracy collimaters; It is characterized in that; The material of said collimater body is a LY12 type aluminium alloy; The specification of the grid through hole of said first kind collimating aperture is 4.55mm * 4.55mm; The specification of the grid hole of said second type of collimating aperture is 1mm * 5.47mm; The degree of depth is 52mm, and the thickness of said first tantalum piece and said second tantalum piece is 0.05mm.
10. high accuracy collimater as claimed in claim 9 is characterized in that, has first slot and second slot that are used for inserting on said first tantalum piece and said second tantalum piece respectively; Four the bight grid holes and the said installing hole of said second type of collimating aperture are one-body molded, and said first tantalum piece is the 1mm tantalum piece, and said second tantalum piece is the 5.47mm tantalum piece, and the length of said first slot is 14mm, and the length of said second slot is 38mm.
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| CN106226916A (en) * | 2016-07-26 | 2016-12-14 | 中国科学院高能物理研究所 | Optics collimator and processing method thereof |
| CN110238521A (en) * | 2019-06-26 | 2019-09-17 | 北京工业大学 | A kind of collimator lattice structure laser accurate welder and method |
| RU2716142C2 (en) * | 2018-05-21 | 2020-03-06 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Neutron collimator |
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| CN112276487A (en) * | 2020-10-18 | 2021-01-29 | 西安电子工程研究所 | Processing method of terahertz waveguide piston adjusting block |
| CN114054874A (en) * | 2021-11-19 | 2022-02-18 | 厦门虹鹭钨钼工业有限公司 | High-precision 3D printing two-dimensional collimator positioning and processing method |
| CN114488554A (en) * | 2022-01-28 | 2022-05-13 | 中国科学院高能物理研究所 | Collimator suitable for Einstein probe satellite and manufacturing process thereof |
| CN115014713A (en) * | 2022-05-13 | 2022-09-06 | 中国科学院高能物理研究所 | Ultraviolet parallel light detection device and detection method for micro-channel plate collimator |
| CN115488350A (en) * | 2022-08-15 | 2022-12-20 | 无锡伽马睿电子科技有限公司 | Collimator of Spect system and processing method thereof |
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| CN106226916A (en) * | 2016-07-26 | 2016-12-14 | 中国科学院高能物理研究所 | Optics collimator and processing method thereof |
| TWI689947B (en) * | 2018-02-27 | 2020-04-01 | 日商ＡＮＳｅｅＮ股份有限公司 | Manufacturing method of collimator |
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| CN112276487A (en) * | 2020-10-18 | 2021-01-29 | 西安电子工程研究所 | Processing method of terahertz waveguide piston adjusting block |
| CN114054874A (en) * | 2021-11-19 | 2022-02-18 | 厦门虹鹭钨钼工业有限公司 | High-precision 3D printing two-dimensional collimator positioning and processing method |
| CN114054874B (en) * | 2021-11-19 | 2022-08-16 | 厦门虹鹭钨钼工业有限公司 | High-precision 3D printing two-dimensional collimator positioning and processing method |
| CN114488554A (en) * | 2022-01-28 | 2022-05-13 | 中国科学院高能物理研究所 | Collimator suitable for Einstein probe satellite and manufacturing process thereof |
| CN115014713A (en) * | 2022-05-13 | 2022-09-06 | 中国科学院高能物理研究所 | Ultraviolet parallel light detection device and detection method for micro-channel plate collimator |
| CN115488350A (en) * | 2022-08-15 | 2022-12-20 | 无锡伽马睿电子科技有限公司 | Collimator of Spect system and processing method thereof |
| CN115488350B (en) * | 2022-08-15 | 2024-04-09 | 无锡伽马睿电子科技有限公司 | Collimator of Spect system and processing method thereof |
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