摘    要

此次设计的小型钻床设计。钻孔工艺是加工孔类的基础部分，只要钻孔工艺的加工精度提高了，在后面的加工工艺过程就会更加简洁，提高加工效率，节省时间，提高经济效益。
本文对小型钻床进行设计，主要完成机械结构部分设计。整机结构主要由电动机产生动力将需要的动力传递到带轮上，然后通过带轮传递到带轮，通过小齿轮再过渡到卷双联齿轮上，双联齿轮轴上装有钻头机构。同时本文对该方案小型钻床关键零部件设计过程进行了详细阐述，其主要内容包括系统总体方案的设计、电动机的选择、执行机构的设计、传动零部件的设计、轴的设计与校核以及轴承的选择等。
本论文研究内容：
(1) 小型钻床总体结构设计。
(2) 小型钻床工作性能分析。
(3)电动机的选择。
(4) 小型钻床的传动系统、执行部件。
(5)对设计零件进行设计计算分析和校核。
 (6)绘制整机装配图及重要部件装配图和设计零件的零件图。 
 关键词：滚珠丝杠；电动机；变速箱；钻孔工艺
 

ABSTRACT

The design of the small drilling machine design. The drilling process is a fundamental part of the processing hole, as long as the machining precision drilling technology improves, the process behind the more concise, improve processing efficiency, save time, improve economic efficiency.
This paper carries on the design to the small drilling machine, mainly completes the design of mechanical structure. The whole structure is mainly composed of the motor power will need to transfer the power to the wheels through a belt pulley, and then transferred to the belt wheel, pinion and then transition to the volume of the duplex gear through, double gear shaft is provided with a drill bit body. At the same time, this paper elaborates on the scheme of small machine key components design process, the main content includes the overall system design, the choice of motor, actuator design, transmission parts of the design, design of shaft and bearing selection and checking.
The content of this paper:
(1) the overall structure design of small drill.
(2) analysis of small drilling performance.
(3) the choice of motor.
(4) transmission system, execute parts of small drill.
(5) the design of parts of the design calculation and check.
(6) the assembly drawing and parts drawing assembly drawings and parts drawings design.
 
Keywords: ball screw; motor; gearbox; drilling technology