The utility model discloses a drilling and milling machine head, which is composed of a headstock, a spindle sleeve, a spindle, a fixture and a motor. The spindle is installed in the headstock. The headstock is provided with a spindle sleeve hole. The spindle sleeve is installed in the headstock, and the motor and the spindle sleeve are installed together in the headstock. The features are as follows: the stator is located inside the rotor, fixed on the spindle sleeve, and the rotor is fixed. On the spindle, the rotation of the rotor directly drives the spindle to rotate, and the lifting handle wheel drives the spindle sleeve to move up and down. The stator on the spindle sleeve and the rotor fixed on the spindle move up and down together as a whole. By installing the stator of the motor inside the rotor, the effective magnetic field area between the stator and the rotor is doubled, and the torque of the motor is increased several times. At the same time, the number of magnetic poles is increased, the speed is low, and the required torque can be achieved without gear deceleration. The rotor and the spindle are directly connected, the structure is simple, the cost is low, the wear and tear of the motion process is small, and the noise is low. Low.
【技术实现步骤摘要】
一种钻铣床的机头
本技术涉及到一种铣床,尤其涉及到一种钻铣床的机头,属机械
技术介绍
铣床是机械加工的一种常用工具。铣床通常由机头箱4与机架构成,其主要工作部分在机头。现有的钻铣床机头,其基本结构如图,电动机外壳3内装有定子2,转子1在定子中间,通过电机轴14带动电机轴上的小齿轮5转动,将动力传递给装有大齿轮6的花键套7,花键套7在上轴承13和下轴承12的支撑下,在箱体4内转动,升降手柄的齿轮8带动主轴套9上下移动,同时装于主轴套9内的主轴10也随主轴套9上下移动,并且主轴10上部的花键也随花键套9作旋转运动,由此带动装于主轴10下方的夹具11实现铣削需要的旋转和上下移动功能。这种机头的缺点是,电机采用传统结构,转子1装在定子2内部,直径较小,转子1和定子2之间的有效磁场面积很小,电机扭距很小,同时由于面积小,磁极对数少,一般只有两对几或四对极,转速高,因此只能通过小齿轮5带动大齿轮6来减小转速,增加扭距,大齿轮6的动力,只能通过花键套7传递给主轴,这种结构型式的传动系统成本很高,并且噪音大,易磨损。
技术实现思路
针对现有钻铣床机头存在的缺陷,本技术提出了一种改进的技术方案。本技术是通过下述方式实现的:一种钻铣床的机头,由机头箱、主轴套、主轴、夹具、电机构成,所述的主轴可旋转地安装于主轴套内,一端安装夹具,另一端突出于主轴套外,所述的机头箱上设有主轴套孔,主轴套安装于机头箱上的主轴套孔内,电机与主轴套一同安装于机头箱内,其特征在于:所述的电机的定子位于转子内部,固定在主轴套上,转子固定在主轴上,转子旋转直接带动主轴旋转,升降手柄齿轮带动主轴套上下移 ...
【技术保护点】
1.一种钻铣床的机头,由机头箱、主轴套、主轴、夹具、升降手柄齿轮、电机构成,所述的主轴可旋转地安装于主轴套内,一端安装夹具,另一端突出于主轴套外,所述的机头箱上设有主轴套孔,主轴套安装于机头箱上的主轴套孔内,电机与主轴套一同安装于机头箱内,所述的升降手柄齿轮安装于主轴套的侧壁,其特征在于:所述的电机的定子位于转子内部,固定在主轴套上,转子固定在主轴上,转子旋转直接带动主轴旋转,升降手柄齿轮带动主轴套上下移动,同时带动固定在主轴套上的定子和固定在主轴上的转子整体一起上下移动。
【技术特征摘要】
1.一种钻铣床的机头,由机头箱、主轴套、主轴、夹具、升降手柄齿轮、电机构成,所述的主轴可旋转地安装于主轴套内,一端安装夹具,另一端突出于主轴套外,所述的机头箱上设有主轴套孔,主轴套安装于机头箱上的主轴套孔内,电机与主轴套一同安装于机头箱内...
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