Newsletter 高速鐵路簡訊 . 交通部高速鐵路工程局
機場捷運維修設備-車輪搪孔機簡介 Introduction to the TIAA MRT Wheel Boring Machine

為避免機場捷運電聯車於營運相當時日後,車輪之磨耗會影響行車安全與乘坐舒適度,將有更換新車輪之需求。為滿足此項作業需求,機場捷運在青埔機廠主維修工廠之輪軸工場,設置有一台車輪搪孔機。
車輪搪孔機,係以CNC為操作模式的垂直車床,用於車輪鑽孔以及為車輪孔徑提供複雜精密的搪孔操作。當新車輪孔徑經該機具加工後,能獲得較高光度及真圓度,可有效增進新車輪與車軸間之匹配,另搭配氣動夾具和懸臂吊車的使用,不但可使相關作業易於操作,亦可達精簡時間及人力之效果。
車輪搪孔機,主要規格如下:1.工作台直徑1.6公尺(m)、2.最大切削直徑 2公尺(m)、3.最大切削高度1.5公尺(m)、4.最大扭矩20,000牛頓•公尺(N-m)、5.最大工件負載重量6噸(ton)。
為確保車輪搪孔機之加工作業,能在高速、重載下平順且精確運轉,其工作台為由高精度推力滾珠軸承和大型圓錐滾珠軸承所驅動,並進行適當的預壓,除可提高迴轉及定位精度外,亦有抑制振動及噪音的作用;在加工過程中,自動強制潤滑系統可有效地提供潤滑,可使機具長時間平順操作並有穩定精度。另為確保操作安全,車輪搪孔機除設有一個具多重互鎖、緊急停止的按鈕外,在移動部件的尾端亦設有限位開關,以防止任何超限意外的發生。

In order to avoid wearing of the TIAA MRT EMU wheels that may affect operational safety and riding comfort after operating for quite some time, there is a need to replace new wheels. To fulfill the operation needs, a wheel boring machine is installed in the wheelset of the main workshop in Chinpu Depot.
The wheel boring machine is a vertical lathe based on CNC operation which is used for wheel drilling and to provide complex and precise boring operations for wheel boring. When a new wheel’s bore is processed by the machine, it can obtain a higher degree of luminosity and roundness which will effectively improve the match between the new wheel and axle. In addition, with the use of pneumatic clamp equipment and jib crane, not only can the operation become easy to operate, but can also achieve streamlining time and manpower.
The main specifications of the wheel boring machine are as follows: 1. Table diameter: 1.6 meters 2. Maximum cutting diameter: 2meters 3. Maximum cutting height: 1.5 meters 4. Maximum torque: 20,000 N-m 5. Maximum workpiece loading weight: 6 tons.
In order to ensure the processing of the wheel boring machine to run smoothly and accurately under high speed and heavy load, the workbench is driven by the high-precision thrust roller bearing and large tapered roller bearing along with appropriate preload. In addition to improving the rotation and positioning accuracy, the mechanism can also inhibit vibration and noise. In the course of processing, an automatic forced lubrication system can effectively provide lubrication, so that the machine can operate smoothly on for a long duration and maintain stable accuracy. To ensure safe operation, in addition to a multi-interlock and emergency stop button, the wheel boring machine is also equipped with a limit switch at the end of the moving parts to prevent any occurrence of overrun accidents.

  • 車輪搪孔機(型號NEO - 16EX)。
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