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傳統搖臂鉆床的改造方案

2020-07-15 22:41來源:未知瀏覽:

傳統搖臂鉆床的改造方案

國產的搖臂鉆床(如圖)是使用較為廣泛的普及型產品之產品間的零部件通用化程度較高,從控制上講,需機、電、液壓等相配合而且要進行時間控制。具有主軸的旋轉運動和進給運動以及搖臂沿外立柱的垂直移動,主軸箱沿搖臂的徑向移動及搖臂與外立拄一起相對于內立柱的回轉運動:后兩者為手動。另外還需考慮主軸箱、搖臂以及內外立拄的夾緊和松開。因此相應電動機較多,電路較復雜,往往因電氣故曈而影響生產的進行。

搖臂鉆床

機床從電動機控制方法的角度來說,自簡單的分級調速發展到變頻調速,再到現在的伺服控制;從控制系統的角度來說,自簡單的孚動操作到電子化的升級,現在又發展到數控產品,控制功能越來越完善。但甶于數控系統成本很高,用在搖臂鉆床上不僅大材小用,且隨看制造成本的增加會使產品的性價比大幅降低。因此電子化搖臂鉆床是取代普通搖臂鉆床的最佳改造方案。利用可編程邏輯控制器(簡稱PLC)和變頻器進行局部改造:徹底更換電氣系統,改造成具有速度顯示、進給選擇、變頻主軸等功能的電子搖臂鉆床。這樣不但能顯著提高搖臂鉆床的工作效率和穩定性,還可以直觀地顯示機床的工作狀態,方便用戶的操作。

 

Transformation scheme of traditional radial drilling machine

The domestic radial drilling machine (as shown in the figure) is a popular product widely used. The parts of the products have a high degree of generalization. From the control point of view, it needs the coordination of mechanical, electrical and hydraulic pressure, and time control is required. It has the rotation and feed movement of the spindle and the vertical movement of the rocker arm along the outer column, the radial movement of the headstock along the rocker arm and the rotary motion of the rocker arm and the outer column relative to the inner column: the latter two are manual. In addition, the clamping and loosening of headstock, rocker arm and inner and outer pillars should be considered. Therefore, there are many corresponding motors and complicated circuits, which often affect the production due to electrical faults.

From the perspective of motor control method, machine tools have developed from simple step-by-step speed regulation to variable-frequency speed regulation, and then to the present servo control; from the perspective of control system, from simple motor operation to electronic upgrading, and now to CNC products, the control function is more and more perfect. However, the cost of CNC system is very high, so it is not only overused in radial drilling machine, but also the cost performance of products will be greatly reduced with the increase of manufacturing cost. Therefore, the electronic radial drilling machine is the best transformation scheme to replace the ordinary radial drilling machine. The PLC and frequency converter are used for local transformation: the electrical system is completely replaced, and the electronic radial drilling machine with the functions of speed display, feed selection and variable frequency spindle is transformed. This can not only significantly improve the working efficiency and stability of the radial drilling machine, but also visually display the working state of the machine tool, which is convenient for users to operate.

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