201115561 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種放大器’特別是指一種貝茲曲線 超聲波放大器之製造方法及其製品。 【先前技術】 一種超聲波放大器（ultrasonic horn )可應用於例如馬 達（ultrasonic motor)、潤滑（uitrasonic iubricati〇n)或手 術刀（ultrasonic bistoury)等各種領域。 參閱圖1’習用的超聲波放大器1包含有一主體n，及 一裝設於該主體11上的喇叭12，該喇叭12繞自身轴線呈 對稱結構，該喇叭12包括一裝設於該主體u的後端面121 ，及一前端面122,由該主體U所產生的振動波由該喇叭 12後端面121往前端面122傳送，以往該喇叭12前、後端 面121、122間多用懸垂曲面（caten〇idal)或階梯（stepped )、高斯（Gaussian)、指數（exp〇nential)或圓錐（c〇nical )等形狀。 /、中卩0梯狀的放大倍率優於懸垂曲面、指數與圓錐 ，郃仍不及高斯形狀喇。八12的放大效果，但高斯形狀的喇 叭12卻難以設計以及製造，而階梯狀喇π八卻因應力集中， 而於操作時易因高應力而破壞，.因此如何製造—種放大倍 率南且容易製造的超聲波放大器1為目前市場所需。 【發明内容】 因此本發明之目的，即在提供一種放大效果佳且容 易製造的貝茲曲線超聲波放大器。 201115561 本發明的另一目的在於提供一種放大效果佳且容易製 造的貝茲曲線超聲波故大器的製造方法。 於是，本發明貝茲曲線超聲波放大器，包含一主體及 一喇叭，該喇叭裝設於該主體上且繞自身軸線呈對稱2構 ，該喇叭包括一裝設於該主體的後端面，及一前端面，該 喇11八前、後端面間的曲線形狀為貝茲曲線，其中，該喇口八 後端面的半徑寬為第一半徑，該喇队前端面的半徑寬為第 二半徑，該喇队前、後端面間的距離為軸向長度。 本發明貝兹曲線超聲波放大器的製造方法，取得該制 队的最佳貝兹曲線包含以下步驟：首先，給定工作頻率、 該心第一半徑、第二半徑與軸向長度，貝兹曲線由起始 點、第―、二、三控制點決定曲線輪靡’起始點與第三控 制點由該味卜八第-、二半徑與轴向長度給定，第一、二: 制點為㈣，接續地，給定複數組第一、二控制點的^ ，並計算出對應的制曲線與放大效能，最後，選出放大 效能最佳時所對應的該組變數，以及對應.的貝兹曲線。 本發明之功效在於將似的曲線設計為貝兹曲線，而 取佳的m㈣給定複數組變數，經由計算以 最佳的貝茲曲線。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 =下配合參考圖式之-個較佳實施例的詳細說明中， 清楚的呈現。 參閱圖2與圖3,本發明貝兹曲線超聲波放大器之一較 201115561 佳貫施例包含一主I# 9，κ ’及—裝設於該主體2上的喇叭3， 该喇叭3繞自身軸線呈 了稱、，'。構，該喇叭3包括一裝設於 5亥主體2的後端面31，乃—义 —珂端面32，該喇叭3前、後端 面32、，的曲線形狀為貝兹⑽㈦曲線，其中，該 喇叭3後端面31的半 冕為弟一+徑R1，該喇叭3前端面 32的半性寬為第二半徑 θΗ 、 R2，該喇51八3前、後端面32、33 間的距離為轴向長度L。.201115561 VI. Description of the Invention: [Technical Field] The present invention relates to an amplifier', particularly to a method for manufacturing a Bezier curve ultrasonic amplifier and an article thereof. [Prior Art] An ultrasonic horn can be applied to various fields such as an ultrasonic motor, a lubricating iubricati〇n, or an ultrasonic bistoury. The conventional ultrasonic amplifier 1 includes a main body n and a horn 12 mounted on the main body 11. The horn 12 has a symmetrical structure about its own axis, and the horn 12 includes a main body mounted on the main body u. The rear end surface 121 and the front end surface 122, the vibration wave generated by the main body U is transmitted from the rear end surface 121 of the horn 12 to the front end surface 122. In the past, the front and rear end surfaces 121 and 122 of the horn 12 are often used with a hanging curved surface (caten〇). Idal) or a stepped, Gaussian, exp〇nential, or conical (c〇nical) shape. /, the magnification of the middle 卩 0 ladder is better than the hanging surface, the index and the cone, and the 郃 is still not as high as the Gaussian shape. The amplification effect of the eight 12, but the Gaussian shape of the horn 12 is difficult to design and manufacture, while the stepped π 八 is due to stress concentration, and is easily destroyed by high stress during operation. Therefore, how to manufacture - the magnification is south The ultrasonic amplifier 1 which is easy to manufacture is currently required in the market. SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a Bezier curve ultrasonic amplifier which is excellent in magnification and easy to manufacture. 201115561 Another object of the present invention is to provide a method for manufacturing a Bezier ultrasonic device which is excellent in magnification and easy to manufacture. Therefore, the Bezier ultrasonic amplifier of the present invention comprises a main body and a horn. The horn is mounted on the main body and has a symmetrical structure about its own axis. The horn includes a rear end surface mounted on the main body, and a front end. The curved shape between the front and rear end faces of the ram 11 is a Bezier curve, wherein the radius of the rear end face of the louver is a first radius, and the radius of the front end face of the racquet is a second radius. The distance between the front and rear end faces of the team is the axial length. The manufacturing method of the Bezier curve ultrasonic amplifier of the present invention, obtaining the optimal Bezier curve of the team comprises the following steps: First, given the working frequency, the first radius of the core, the second radius and the axial length, the Bezier curve is The starting point, the first, second, and third control points determine the curve rim 'starting point and the third control point are given by the taste, the second radius, and the axial length. The first and second points are (4), successively, given the first and second control points of the complex array ^, and calculate the corresponding system curve and amplification efficiency, and finally, select the set of variables corresponding to the best amplification performance, and the corresponding Bates curve. The effect of the present invention is to design a similar curve as a Bezier curve, and a better m (four) given complex array variables, via calculations to optimize the Bezier curve. [Embodiment] The foregoing and other technical contents, features, and advantages of the present invention are clearly described in the detailed description of the preferred embodiments of the reference drawings. Referring to FIG. 2 and FIG. 3, one of the Bezier ultrasonic amplifiers of the present invention includes a main I#9, κ', and a horn 3 mounted on the main body 2, which is around the axis thereof. It was called, '. The horn 3 includes a rear end surface 31 mounted on the main body 2 of the 5 hai, and the end surface 32 of the yoke 3, and the curved shape of the front and rear end surfaces 32 of the horn 3 is a Betz (10) (seven) curve, wherein the horn is The half end of the rear end face 31 is the same as the diameter R1, and the half width of the front end face 32 of the horn 3 is the second radius θ Η , R2 , and the distance between the front and rear end faces 32 , 33 of the ram 51 8 is the axial direction. Length L. .
m 3與圖4 ’本發明^線超聲波放大器的製造 方法為利用電腦演算取得最佳貝兹曲線，再依此貝兹曲線 衣3，取得最佳貝兹曲線包含以下步驟： …首先\在步驟41巾，給定工作頻率、該♦八3的第一 半Ή、第二半徑R2與軸向長& L，貝兹曲線由起始點 Co第、—、三控制點Ci、C2、C3決定曲線輪廓，起始 點C〇與第三控制點C3由該喇叭3的第一、二半徑R1、R2 與軸向長度L給^ ’第—、二控制點^、C2為變數。 接續地，在步驟42到45中，設定第一、二控制點q 、C2變數組的世代數，並亂數給定第一世代的複數組第一 、一控制點Cl、C2變數，計算出每一組變數所對應的貝茲 曲線以及放大效能。依據每一世代中具最佳放大效能的變 數組決定下一世代變數組。最後，選出放大效能最佳時所 對應的該組變數，以及對應的貝茲曲線。 測試貝茲曲線所得的喇叭3 ’放大效能優於懸垂曲面形 狀的喇队3，階梯形狀放大效能優於貝茲曲線，但，階梯形 狀的剩3在傳遞波動時，卻會在結構内部產生過大應力 201115561 ’而使得該喇叭3結構穩固性降低，依據貝茲曲線所製得 的喇η八3所產生的應力遠小於階梯形狀的剩^八3。 更進一步說明的是，在步驟41與42中，該喇u八3軸 向長度L為9.3cm ’該喇叭3第一半徑R1為iCm，該喇叭 •3第二半徑R2為0,25cm ’設定貝茲曲線世代數目為4〇代 首先’在步驟43與44中，亂數給定第一世代共2〇組 第一、二控制點C!、C2變數，並計算出每一組所對應的貝 茲曲線以及放大效能。 其中，計算放大效能包含計算每一貝茲曲線對應的共 振頻率與工作頻率間的差值，並計算該喇叭3前端面32處 相對該後端面31處的振幅放大倍率。值得說明的是，每一 貝茲曲線的喇队3具有對應的共振頻率，在共振頻率以外 的頻率經過該喇队3後振幅不會具有共振頻率的放大效能 ，唯在共振頻率上振幅放大為最大，而前、後端面32、Η 處的振幅相比較即得放大倍率，舉例而言：依據其中一貝 雄曲線所製成的嘯u人3其共振頻率位於28 75kHz處，該御 队3後端面處31的振幅為124微米，該心3前端面％ 處的振幅為130.2微米，放大倍率為1〇 5倍。 接著該步驟45’在第一世代的2〇組當中，挑出共振步 率最接近工作頻率，且放大倍率最大的一組第―、二栌希 點q、c2，並依據該組第一、二控制點^、c2亂數給定' 組第二世代㈣數組，重複前述步驟，選出第二世代最召 的一組第—、二控制.點Cl、C2供第三世代，重複前述步壞 201115561 直到第四十世代。 最後該步驟46,在最後的第四十世代中，選 率最接近工作頻率，且放大倍率最大的—组第_、二㈣ 點q'C2,即為較佳的貝兹曲線，若要選出更佳的貝=曲 線，可藉由提高每-世代中亂數給定更多組的第一、二控 =點Cl、C2，並且提高世代數目，即可得到更佳的貝⑭工 綠0 综上所述，貝兹曲線所製成的似3在總合結構轉定 性、放大效能、製造難易度各方面的效能較佳，而較佳的 貝兹曲線可利用電腦演算幫助取得，首先給定起始點^與 第二控制點C3,再亂數給定第一、二控制點Cl'C2,篩選 出最佳的一、组第一、二控制點Ci、C2即得最佳的貝兹曲線 ’故確實能達成本發明之目的。 &惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍’即大凡依本發明申請專利 乾圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1是一正視圖，說明以往的一種超聲波放大器，· d。圖2.疋一正視圖，說明本發明一種貝茲曲線超聲波放 大器的一較佳實施例； ^ 疋一貝茲曲線示意圖，說明本較佳實施例的貝茲 m其起始點與第一、二、三控制點；及 圖4是一流程圖，說明本發明一種貝茲曲線超聲波放 S] 7 201115561 大器的製造方法的一較佳實施例。m 3 and FIG. 4 'The method for manufacturing the ultrasonic amplifier of the present invention is to obtain the best Bezier curve by computer calculation, and then according to the Bezier curve 3, the best Bezier curve is obtained by the following steps: ... first\ in the step 41 towel, given the working frequency, the first half of the ♦8, the second radius R2 and the axial length & L, the Bezier curve from the starting point Co, -, three control points Ci, C2, C3 Determining the curve profile, the starting point C〇 and the third control point C3 are variables from the first and second radii R1, R2 and the axial length L of the horn 3 to the first and second control points ^, C2. Next, in steps 42 to 45, the first and second control points q and C2 are set to change the number of generations of the array, and the first number of the first generation, the control points C1 and C2 are given in random numbers, and the calculation is performed. The Bezier curve for each set of variables and the amplification performance. The next generation variable array is determined by the variable array with the best amplification performance in each generation. Finally, the set of variables corresponding to the best amplification performance and the corresponding Bezier curve are selected. The loudspeaker 3' obtained by testing the Bezier curve is superior to the racquet 3 of the shape of the suspended surface. The step shape amplification performance is better than the Bezier curve, but the remaining 3 of the step shape will generate excessively inside the structure when transmitting the fluctuation. The stress 201115561' makes the structure stability of the horn 3 lower, and the stress generated by the η 八 八 according to the Bezier curve is much smaller than the residual shape of the step shape. Further, in steps 41 and 42, the length L of the axial direction of the razor 8 is 9.3 cm. The first radius R1 of the horn 3 is iCm, and the second radius R2 of the horn is set to 0, 25 cm. The number of Bezier curves is 4 首先 first. 'In steps 43 and 44, the first number of the first generation and the second control point C!, C2 variables are given to the first generation, and the corresponding ones of each group are calculated. Bezier curve and amplification performance. Wherein, calculating the amplification performance comprises calculating a difference between the resonance frequency corresponding to each Bezier curve and the operating frequency, and calculating the amplitude magnification at the front end face 32 of the speaker 3 relative to the rear end face 31. It is worth noting that the racquet 3 of each Bezier curve has a corresponding resonant frequency. After the frequency outside the resonant frequency passes through the racquet 3, the amplitude does not have the amplification efficiency of the resonant frequency, but the amplitude is amplified at the resonant frequency. The maximum, while the amplitudes of the front and rear end faces 32 and Η are compared, that is, the magnification is obtained. For example, according to one of the Berjong curves, the resonance frequency of the xiaou people 3 is located at 28 75 kHz, the squad 3 The amplitude of the rear end face 31 was 124 μm, and the amplitude at the front end face % of the core 3 was 130.2 μm, and the magnification was 1〇5 times. Then, in step 45', among the 2〇 groups of the first generation, a set of first- and second-ordered points q and c2 whose resonance step rate is closest to the working frequency and the largest magnification is selected, and according to the group first, The second control point ^, c2 random number given 'group second generation (four) array, repeat the above steps, select the second generation of the most called a group of -, two control. Point Cl, C2 for the third generation, repeat the above steps 201115561 Until the fortieth generation. Finally, in step 46, in the last fortieth generation, the selection rate is closest to the working frequency, and the highest _, _, and (4) points q'C2 of the magnification is the preferred Bezier curve, to be selected. A better Bayer curve can be obtained by increasing the number of first and second controls = points Cl, C2 given by the chaotic number in each generation, and increasing the number of generations. In summary, the Bezier curve is more effective in all aspects of general structure reversibility, amplification efficiency, and manufacturing difficulty. The better Bezier curve can be obtained by computer calculus. The starting point ^ and the second control point C3, and then the first and second control points Cl'C2 are given in random numbers, and the best one, the first and second control points Ci, C2 are selected to be the best. The curve "can indeed achieve the object of the present invention. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the practice of the present invention, i.e., the simple equivalent change of the patent application and the description of the invention. And modifications are still within the scope of the invention patent. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front elevational view showing a conventional ultrasonic amplifier, d. Figure 2 is a front elevational view showing a preferred embodiment of a Bezier curve ultrasonic amplifier of the present invention; ^ 疋Beztz curve diagram illustrating the starting point of the Bez m of the preferred embodiment and the first The second and third control points; and FIG. 4 is a flow chart illustrating a preferred embodiment of the manufacturing method of the Bezier curve ultrasonic discharge S] 7 201115561.
8 201115561 【主要元件符號說明】 2 ........ ••本體 3 ........ ，·口刺队 31....... •後端面 32....... -·前端面 R1 ...... ••第一半徑 R2…… •-第二半徑 L........ -·徑向長度 C 〇 *.....* •-起始點 Ci…… ••第一控制點 c2… ……第二控制點 C3… ..…第三控制點 41 … •…步驟 42•… -…步驟 43 •…·步驟 44… …-·步驟 45.…. •…步驟 46·. …·步驟 47..... • * · ·步驟8 201115561 [Explanation of main component symbols] 2 ........ •• Ontology 3 ........ , · Spurs 31....... • Rear end face 32.... ... -· Front face R1 ...... •• First radius R2... •-Second radius L........ -· Radial length C 〇*.....* • - starting point Ci... • • first control point c2... ...... second control point C3... ..... third control point 41 ... • ... step 42 • ... -... step 43 •...·step 44... -·Step 45..... •...Step 46·. ...·Step 47..... • * · · Step
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