1311947 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種冲床之偏心傳動裝置，特別是在機械 冲床之曲軸端側設置另一偏心的傳動軸，使曲轴接受傳動 轴動力傳動而變換自轉速率的技術。 【先前技術】 按，坊間所見之機械冲床的曲軸，皆是藉由離合煞車 器、飛輪及傳動皮帶以接受馬達動力傳動而同步運轉，並 帶動連桿產生簡諳運動，以同步帶動調整桿及其所連結的 單一導柱產生往復式運動，並藉由單一導柱同步帶動滑塊 向檯盤進行往復式冲壓加工運作。 且知，傳統冲床的馬達一般是以等速度帶動曲轴運 轉，依據V (速度）=L (距離）/Τ (時間）的關係式可知， 曲軸每旋轉一個角度的速度及時間相同時，滑塊位移的距 離亦會相同；因此，曲轴旋轉角度100 (如圖七所示）與滑 塊位置之相對關係會呈現一個如正弦曲線的滑塊位移行程 80 ;此外，滑塊實際運用於對工件冲模的加工位移區域， 僅檯盤頂部置放工件的位置，換言之，僅正弦曲線底部之 波谷801區域為滑塊的工作高度線82，故曲線線段在波谷 801區域内愈長，表示滑塊對工件的冲壓加工時間愈長。 然知，上述滑塊對工件的冲壓加工時間，會直接影響 到工件被冲壓成型的品質；因此，坊間已見有一種肘節式 冲床，係利用複數曲軸以變換馬達輸入的等速傳動動力， 致使滑塊位移行程8 (如圖八所示）在波谷81區域内的線 6 1311947 段長度增加而形成一個變形正弦曲線，致使工件被滑塊冲 壓加工的8¾•間增加；惟其製作技術及結#複雜度過高，徒 增製造成本，為其缺失所在。 有鑑於此’本發明人特以其專門從事冲床之製造及設 計的多年經驗’進而研創出本發明，以改善上述之問題。 【發明内容】 本發明之目的旨在提供一種可將滑塊位移行程變換成 變形正弦曲_曲軸傳動裝置，致使工件被滑塊冲壓加工 的時間增加，進而提升工件被冲壓成型的品質。 本發明冲床之偏心傳動裝置，包含在一曲軸上樞接一 連桿，能接受曲軸帶動而產生簡諧運動，並於連桿另端枢 接一導柱’並在導柱底部組設一能滑設於冲床上的滑塊， 致使滑塊能經由導柱的同步帶動而進行往復式冲壓加工運 作。 上述曲轴與另一偏心的傳動轴之間設有一軸梢，使軸 梢一端樞設於曲軸的偏心位置以帶動其自轉，另一端滑設 於傳動軸軸心上的一導引槽内，接受導弓丨槽的引導 動，以連結傳動軸運轉所傳動的動力。 據此，利用馬達帶動傳動轴運轉，使軸梢以偏心傳動 的方式變換曲軸的自轉速率，以達到上述的目的。 然而，為能再加詳述本發明，併予列舉一較佳實施之 圖例’配合圖式詳細說明如后述： 【實施方式】 首觀圖一、二所示，揭示出本發明冲床之偏心傳動裝 7 1311947 置一較佳實施方式的局部剖示圖，說明本發明之主要構成 技術包含有： 一曲軸1，具有一偏心的凸輪12，且曲軸1 一端的軸 心上具有一同軸心的從動轉盤11，能與曲轴1同步轉動； 一連桿2，一端樞接於曲軸1的凸輪12上，能接受曲 軸1帶動而產生簡諧運動； 一滑塊3，垂向滑設於冲床上，能接受連桿2帶動而進 行往復式冲壓加工運作，並能於滑塊3底部裝設一模具的 • 上模33 ; 一傳動軸5，設於曲軸1 一端下方的偏心位置，傳動轴 5 —端設有一離合煞車器71及另一飛輪72，並於一馬達7 的轉軸與飛輪72上套設一傳動皮帶73，使飛輪72能接受 馬達7動力傳動而運轉，並利用飛輪72連動離合煞車器71 以帶動傳動軸5同步運轉；另一端的轴心上具有一同軸心 的主動轉盤51，能與傳動軸5同步轉動，且主動轉盤51上 具有一導引槽52，並於導引槽52内滑設一導引塊53 ; 一軸梢6，一端樞設於曲軸1之從動轉盤11上的偏心 位置，能帶動曲軸1自轉；另一端樞接於導引塊53上，藉 以滑設於傳動軸5的導引槽52内，於傳動軸5轉動時，能 接受導引槽52的引導及帶動，以連結傳動轴5運轉所傳動 的動力。 此外，上述滑塊3滑設於冲床上的實施方式，係能在 冲床上設置複數滑套321，且各滑套321内滑設有一導桿 32，使各導桿32 —端與滑塊3相結合，致使滑塊3能經由 複數導桿32的導引而在冲床上垂向滑移；或者，亦能在冲 8 1311947 床（如圖六所示）上設置複數導桿320，且各導桿320上滑 設有一滑套322，使各滑套322 —端與滑塊3相結合，致使 滑塊3能經由複數滑套322的導引而在冲床上垂向滑移。 另外，上述連桿2(如圖一所示）與滑塊3之間至少設 有一導柱4,使滑塊3能經由導柱4而接受連桿2的帶動。 同時，上述連桿2與導柱4之間更加能藉由一調整桿9 相連結，且調整桿9上具有導程蝸輪91，並於調整桿9旁 側設有一蝸桿92，能嚅合轉動調整桿9上的蝸輪91，以調 • 整各導柱4相連結的滑塊3高度。 又，上述滑塊3底部近處更包含有一檯盤31，能在滑 塊3向下滑落時與其接合，並能於檯盤31頂部裝設一模具 的下模34。 藉由上述構件之組成，能使傳動轴轴心50 (如圖三所 示）位於曲軸轴心10的下方，以便據以實施本發明，特別 是在傳動軸5 (如圖一、圖二所示）接受馬達7動力傳動而 運轉時，軸梢6與從動轉盤11樞接端會圍繞曲轴轴心10(如 籲圖三所示）自轉；同時，軸梢6與導引塊53樞接端會被導 引槽52引導及帶動，而在主動轉盤51上沿著傳動軸5旋 轉方向滑移；此時，若傳動軸5帶動軸梢6與導引塊53樞 接端由0°轉動至90°位置，轴梢6與從動轉盤11樞接端會 被同步帶動至曲軸1的120°位置，依據V (速度）=L (距 離）/T (時間）的關係式可知，因為曲軸1相較於傳動轴5 多轉動了 3 0 °，故曲軸1轉動速度較傳動轴5快，致使滑塊 3向下滑落期間具有較佳的冲壓速度；當傳動軸5 (如圖四 所示）帶動軸梢6與導引塊53樞接端由90°轉動至180°位 1311947 置，軸梢6與從動轉盤11樞接端會被同步由曲軸1的120。 位置帶動至180。位置，因此曲軸1相較於傳動轴5少轉動 了 306，故曲轴1轉動速度較傳動轴5慢’致使滑塊3向下 滑落時的冲壓速度逐漸減少；據此，使滑塊位移行程8 (如 圖五所示）落入其工作高度線82以下的波谷81區域内的 線段長度增加而形成一個變形正弦曲線’能變換曲軸1的 自轉速率，藉以增加工件被滑塊3冲壓加工的時間，進而 以提升工件被冲壓成型的品質。此外’本發明之結構複雜 度較先前技術中的肘節式冲床低，因此製作技術較易於控 制’能降低製造成本。 隹更進一步的實施上，上述滑塊3頂部的導柱4亦能 增設為至少二支導柱4〇 (如圖六所示），並於單—連桿2與 各導柱40之間設置一連結座35，能接受單一連桿2 ^動/而 與各導柱40 一同產生往復式運動，使各導柱40間的作用 力傳導趨於-致性，致使各導柱4G以均勻的作用 ==往復式冲壓加工運作;同時’在調整滑塊3〇 / Μ 33的位置時，能經由單一連桿2控制各導柱40 ==r3°的準位精度，進一:: 摄』ί ’上述連桿2 (如圖六所示）與連結座35之間同 樣=由—調整桿90相連結’且調整桿90上也且有導程 堝輪901，並於锢敏栌丨 工也/、有導杠 動調整"Ο 旁側設有一蝸桿902，能嚷合轉 枝_蜗輪9〇】，以調整連結座35及其經由各導 柱40相連結的滑塊3〇高度。 1311947 綜上所陳，僅為本發明之較佳實施例而已，並非用以 限定本發明之申請專利範圍；凡其它未脫離本發明所揭示 之精神下而完成的等效修飾或置換，均應包含於后述申請 專利範圍内。 【圖式簡單說明】 圖一：揭示出本發明一實施方式的局部剖示圖，說明 在曲軸上樞接一連桿，並於連桿另端樞接一導柱，並在導 柱底部組設一能滑設於冲床上的滑塊。 • 圖二：揭示出圖一的局部放大剖示圖，說明在曲軸與 另一偏心的傳動轴之間設有一軸梢，使軸梢一端樞設於曲 轴之從動轉盤上的偏心位置，另一端樞接於傳動軸之主動 轉盤的導引塊上。 圖三：揭示出本發明之轴梢的動態示意圖，說明傳動 轴帶動轴梢與導引塊樞接端由0°轉動至90°位置時，軸梢 與從動轉盤樞接端會被同步帶動至曲轴的120°位置。 圖四：揭示出本發明之轴梢的另一動態示意圖，說明 _ 傳動軸帶動軸梢與導引塊柩接端由90°轉動至180°位置 時，轴梢與從動轉盤樞接端會被同步由曲軸的120°位置帶 動至180°位置。 圖五：揭示出本發明之滑塊的位移行程圖，說明利用 一偏心的傳動軸將滑塊位移行程變換成變形正弦曲線。 圖六：揭示出本發明其它實施方式的局部剖示圖，說 明滑塊頂部的導柱亦能增設為至少二支導柱，並於連桿與 各導枉之間設置一連結座。 11 1311947 圖七：揭示出習用冲床之滑塊的位移行程圖，說明在 曲軸等速度運轉時，滑塊位移行程會形成一正弦曲線。 圖八：揭示出肘節式冲床之滑塊的位移行程圖。 【主要元件符號說明】 1-------------曲軸 10 ------------曲轴轴心 100-----------曲轴旋轉角度1311947 IX. The invention relates to an eccentric transmission device for a punching machine, in particular, another eccentric transmission shaft is arranged on the crankshaft end side of the mechanical punching machine, so that the crankshaft receives the transmission shaft power transmission and transforms the rotation. Rate technology. [Prior Art] According to the crankshaft of the mechanical punching machine seen in the workshop, the clutch brake, the flywheel and the transmission belt are used to receive the motor power transmission to run synchronously, and the connecting rod is driven to generate a simple movement to simultaneously drive the adjustment rod and The single guide column connected thereto generates a reciprocating motion, and the slider is synchronously driven by the single guide column to perform a reciprocating press working operation on the table. It is also known that the motor of a conventional punching machine generally drives the crankshaft at an equal speed. According to the relationship of V (speed) = L (distance) / Τ (time), the slider can be seen when the speed and time of the crankshaft are the same for each angle. The distance of the displacement will also be the same; therefore, the relative relationship between the crank angle of rotation 100 (shown in Figure 7) and the position of the slider will present a sinusoidal displacement stroke of the slider 80; in addition, the slider is actually applied to the workpiece die The machining displacement area, only the position of the workpiece placed on the top of the table, in other words, only the valley 801 area at the bottom of the sinusoid is the working height line 82 of the slider, so the longer the curve line segment is in the valley 801 area, indicating the slider to the workpiece The longer the press processing time. However, it is known that the stamping processing time of the above-mentioned slider on the workpiece directly affects the quality of the workpiece being stamped and formed; therefore, there has been a toggle-type punching machine which uses a plurality of crankshafts to change the constant-speed transmission power input by the motor. As a result, the slider displacement stroke 8 (shown in FIG. 8) increases the length of the line 6 1311947 in the valley 81 region to form a deformed sinusoid, which causes the workpiece to be increased by the stamping process; however, the fabrication technique and the knot #Complexity is too high, increase manufacturing costs, and the lack of it. In view of the above, the present inventors have developed the present invention in order to improve the above problems by virtue of their many years of experience in manufacturing and designing presses. SUMMARY OF THE INVENTION It is an object of the present invention to provide a crankshaft displacement device that can be converted into a deformed sinusoidal crankshaft cranking device, resulting in an increase in the time during which the workpiece is stamped by the slider, thereby improving the quality of the workpiece being stamped. The eccentric transmission device of the punching machine of the present invention comprises a connecting rod pivotally connected to a crankshaft, capable of receiving a crankshaft to generate a simple harmonic motion, and pivoting a guiding column at the other end of the connecting rod and assembling an energy at the bottom of the guiding column. Sliding the slider on the punching machine, so that the slider can be reciprocatingly punched through the synchronous driving of the guide post. A shaft tip is disposed between the crankshaft and the other eccentric transmission shaft, so that one end of the shaft end is pivoted at an eccentric position of the crankshaft to drive the rotation thereof, and the other end is slidably disposed in a guiding groove on the shaft of the transmission shaft to receive The guiding movement of the guide bow groove is used to connect the power transmitted by the drive shaft. Accordingly, the motor is used to drive the drive shaft to operate, so that the shaft tip changes the rotation rate of the crankshaft in an eccentric transmission manner to achieve the above purpose. However, in order to further clarify the present invention, a preferred embodiment of the present invention will be described with reference to the detailed description of the drawings as follows: [Embodiment] The first and second figures are shown to reveal the eccentricity of the punch of the present invention. Transmission section 7 1311947 A partial cross-sectional view of a preferred embodiment, illustrating that the main constituent technology of the present invention comprises: a crankshaft 1 having an eccentric cam 12 and having a concentric inner core on one end of the crankshaft 1 The driven turntable 11 can rotate synchronously with the crankshaft 1; a connecting rod 2, one end of which is pivotally connected to the cam 12 of the crankshaft 1, can receive the crankshaft 1 to generate a simple harmonic motion; a slider 3, which is vertically slidably disposed on the punching machine In the above, the reciprocating press working operation can be carried out by the connecting rod 2, and the upper mold 33 of the mold can be installed at the bottom of the slider 3; a transmission shaft 5 is disposed at an eccentric position below the end of the crankshaft 1, the drive shaft A clutch brake 71 and another flywheel 72 are disposed at the end of the fifth end, and a transmission belt 73 is sleeved on the rotating shaft of the motor 7 and the flywheel 72, so that the flywheel 72 can be driven by the power transmission of the motor 7, and is linked by the flywheel 72. Clutch brake 71 to drive The moving shaft 5 is synchronously operated; the other end of the shaft has a coaxial active turntable 51, which can rotate synchronously with the drive shaft 5, and the driving turntable 51 has a guiding groove 52 and is slidably disposed in the guiding groove 52. A guiding block 53; a shaft end 6 having one end pivoted on an eccentric position of the driven turntable 11 of the crankshaft 1 to drive the crankshaft 1 to rotate; the other end is pivotally connected to the guiding block 53 for slidingly disposed on the transmission shaft 5 In the guiding groove 52, when the transmission shaft 5 rotates, the guiding groove 52 can be guided and driven to connect the power transmitted by the transmission shaft 5. In addition, in the embodiment in which the slider 3 is slidably disposed on the punching machine, a plurality of sliding sleeves 321 can be disposed on the punching machine, and a guiding rod 32 is slidably disposed in each sliding sleeve 321 to make the guiding rods 32 end and the sliding rod 3 In combination, the slider 3 can be vertically slid on the punching machine by the guiding of the plurality of guiding rods 32; or, the plurality of guiding rods 320 can be disposed on the rushing 8 1311947 bed (shown in FIG. 6), and each A sliding sleeve 322 is slidably disposed on the guiding rod 320, so that the ends of the sliding sleeves 322 are combined with the sliding blocks 3, so that the sliding blocks 3 can be vertically slid on the punching table by the guiding of the plurality of sliding sleeves 322. Further, at least a guide post 4 is provided between the link 2 (shown in Fig. 1) and the slider 3, so that the slider 3 can receive the link 2 via the guide post 4. At the same time, the connecting rod 2 and the guide post 4 are further connected by an adjusting rod 9, and the adjusting rod 9 has a lead worm 91, and a worm 92 is arranged on the side of the adjusting rod 9 to be able to rotate. The worm wheel 91 on the rod 9 is adjusted to adjust the height of the slider 3 to which the respective guide posts 4 are coupled. Further, the bottom portion of the slider 3 further includes a disk 31 which can be engaged with the slider 3 when it slides downward, and a lower die 34 of a mold can be mounted on the top of the disk 31. By the composition of the above components, the drive shaft axis 50 (shown in FIG. 3) can be located below the crankshaft axis 10 in order to implement the present invention, particularly in the drive shaft 5 (as shown in FIG. 1 and FIG. 2). When the motor 7 is driven by the power transmission, the pivot end of the shaft end 6 and the driven turntable 11 will rotate around the crankshaft axis 10 (as shown in FIG. 3); meanwhile, the shaft end 6 is pivotally connected to the guiding block 53. The end is guided and driven by the guiding groove 52, and is slid along the driving shaft 5 in the rotating direction of the driving shaft 5; at this time, if the driving shaft 5 drives the pivotal end of the shaft end 6 and the guiding block 53 to rotate by 0° Up to the 90° position, the pivot end of the shaft end 6 and the driven turntable 11 will be synchronously driven to the 120° position of the crankshaft 1. According to the relationship between V (speed) = L (distance) / T (time), because the crankshaft 1 is rotated more than 30 ° compared with the drive shaft 5, so the crankshaft 1 rotates faster than the drive shaft 5, so that the slider 3 has a better punching speed during the sliding down; when the drive shaft 5 (shown in Figure 4) ) The pivoting end of the shaft end 6 and the guiding block 53 is rotated from 90° to 180° position 1311947, and the pivot end of the shaft end 6 and the driven turntable 11 are synchronized. 120 of the crankshaft 1. The position is driven to 180. Position, so the crankshaft 1 rotates 306 less than the drive shaft 5, so the crankshaft 1 rotates slower than the drive shaft 5, so that the punching speed of the slider 3 is gradually decreased when it slides down; accordingly, the slider displacement stroke 8 is made. (As shown in FIG. 5) The length of the line segment falling in the region of the valley 81 below its working height line 82 is increased to form a deformed sinusoidal curve which can change the rotation rate of the crankshaft 1 to increase the time during which the workpiece is stamped by the slider 3. In order to improve the quality of the workpiece being stamped. Further, the structural complexity of the present invention is lower than that of the prior art toggle punch, so that the manufacturing technique is easier to control, and the manufacturing cost can be reduced. Further, the guide post 4 at the top of the slider 3 can be added to at least two guide posts 4 (shown in FIG. 6), and is disposed between the single-link 2 and each guide post 40. A connecting seat 35 can receive a single connecting rod 2/moving and generate reciprocating motion together with each guiding post 40, so that the force transmission between the guiding columns 40 tends to be uniform, so that the guiding columns 4G are uniform. Function==Reciprocating stamping operation; at the same time, 'when adjusting the position of the slider 3〇/ Μ 33, the position accuracy of each guide post 40 ==r3° can be controlled via a single link 2, and the following:: 摄』 'The above-mentioned connecting rod 2 (shown in FIG. 6) and the connecting seat 35 are also connected by the adjusting rod 90', and the adjusting rod 90 also has a lead rolling wheel 901, and is also completed by Min Min. There is a guide bar adjustment " 旁 a worm 902 is provided on the side, and the turret worm wheel 9 嚷 can be twisted to adjust the height of the joint 35 and the slider 3 connected via the respective guide posts 40. 1311947 </ RTI> </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; It is included in the scope of the patent application described later. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cross-sectional view showing an embodiment of the present invention, illustrating a pivotal connection of a link on a crankshaft, and pivoting a guide post at the other end of the link, and at the bottom of the guide post Set a slider that slides on the punch. • Figure 2: A partial enlarged cross-sectional view of Figure 1 is shown, showing a shaft tip between the crankshaft and another eccentric drive shaft, so that one end of the shaft end is pivoted on the eccentric position of the driven turntable of the crankshaft, and One end is pivotally connected to the guiding block of the active turntable of the drive shaft. Fig. 3 is a schematic view showing the dynamics of the shaft tip of the present invention, which shows that when the transmission shaft drives the pivot end of the shaft and the pivoting end of the guiding block from 0° to 90°, the pivot end of the shaft end and the driven turntable are synchronously driven. To the 120° position of the crankshaft. Figure 4: Another dynamic schematic diagram of the shaft tip of the present invention is disclosed. The _ drive shaft drives the shaft end and the guiding block splicing end from 90° to 180°, and the shaft tip and the driven turntable pivot end Synchronized from the 120° position of the crankshaft to the 180° position. Fig. 5 is a view showing the displacement stroke of the slider of the present invention, illustrating the use of an eccentric drive shaft to transform the displacement stroke of the slider into a deformed sinusoid. Figure 6 is a partial cross-sectional view showing another embodiment of the present invention, showing that the guide post at the top of the slider can be added to at least two guide posts, and a joint is provided between the link and each guide. 11 1311947 Figure 7: Explain the displacement stroke of the slider of the conventional punching machine, indicating that the slider displacement stroke will form a sinusoid when the crankshaft is running at the same speed. Figure 8: Discharge stroke diagram showing the slider of the toggle press. [Main component symbol description] 1-------------Crankshaft 10 ------------Crankshaft axis 100-----------Crankshaft Rotation angle
11 ------------從動轉盤 12 ------------凸輪 2 ------------連桿 3 ------------滑塊 31、 301-------檯盤 32、 320-------導桿 321 > 322------滑套 33 ------------上模 34 ------------下模 35 ------------連結座 4、40---------導柱 5 ------------傳動車由 50 ------------傳動軸軸心 51 ------------主動轉盤 52 ------------導引槽 53 ------------導引塊 12 61311947 7 - 71 72 7311 ------------Driver turntable 12 ------------Cam 2 ------------ Connecting rod 3 ---- -------- Slider 31, 301-------Tray 32, 320-------Guide 321 > 322------ Slip cover 33 --- ---------Upper mold 34 ------------ Lower mold 35 ------------ Connection seat 4, 40------ --- Guide column 5 ------------ Transmission vehicle by 50 ------------ drive shaft axis 51 ----------- -Active turntable 52 ------------ Guide groove 53 ------------ Guide block 12 61311947 7 - 71 72 73
81 ' 80181 ' 801
82 9、90 91 ' 901 軸梢 馬達 -離合煞車器 -飛輪 -傳動皮帶 -滑塊位移行程 波谷 -工作高度線 -調整桿 蜗輪 92 ' 902------蜗桿82 9,90 91 ' 901 Shaft Tip Motor - Clutch Brake - Flywheel - Drive Belt - Slider Displacement Travel Valley - Working Height Line - Adjusting Rod Worm Gear 92 ' 902 - Worm
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