直径普通车床主传动系统

--

-- 摘要

主轴箱：又称床头箱，它的主要任务是将主电机传来的旋转运动经过一些列的变速机构使主轴得到所需要的正反两种转向的不同转速，同时主轴箱分出部分动力将运动传给进给箱。主轴箱中主轴是车床的关键零件。主轴在轴承上运转的平稳性直接影响工件的加工质量，因此合理的设计是非常必要的。机床的设计过程包括方案拟定、参数拟定、运动设计、零件计算和结构设计等。根据需要的转速范围通过设计转速图和传动系统完成机床的多级传动，设计变速组的齿轮传动所需的齿数、模数来实现妒忌传动，在设计过程中通过对齿轮模数、主轴、传动轴、轴承和花键键侧挤压应力的校核实现机床的稳定传动。通过对传动系统的设计完善摇杆和拨叉对系统的控制盒安装位置的设计。

关键词

齿轮；皮带轮；花键；平键；离合器；拨叉；摇杆

--

-- Abstract

Spindle box: also known as the headstock, it is the main task of the main motor

transmits rotary motion through a number of columns of the speed change mechanism so that

the spindle to be needed and two to the different speed, at the same time the spindle box. The

power will be transferred to the feeding box movement.Main spindle box of lathe spindle is a

key part of.The spindle on the bearing running stationarity directly affect the quality of

workpieces, so the reasonable design is very necessary.Machine design process including

programming, parameter design, development, moving parts calculation and structure

design.According to the needs of the speed range through the design of rotational speed chart

and drive system complete machine multilevel transmission, transmission gear transmission

design group required number of teeth, modulus to envy drive, in the design process based on

the modulus gear, shaft, drive shaft, bearing and spline keys side extrusion stress check the

machine stability transmission.Based on the design of transmission system of perfect rocker

and a shifting fork on the system control box mounting position design.

Key word:gear; pulley; spline; flat key; clutch; fork; Rocker

--

-- 1 概述 ......................................................................................................................................................... 0

1.1 机床设计目的 ............................................................................................................................. 0

1.2机床设计程序 ............................................................................................................................... 0

1.3 机床设计的要求 ......................................................................................................................... 1

2 机床的总体设计 .............................................................................................................................. 3

2.1 机床的工艺特性 ......................................................................................................................... 3

2.2 确定极限转速 ............................................................................................................................. 4

2.3 主电机功率 .................................................................................................................................. 5

3 传动方案的设计 .............................................................................................................................. 6

3.1 传动方案的设计 ......................................................................................................................... 6

3.1.1 选择传动形式 .................................................................................................................. 6

3.1.2 变速形式 ........................................................................................................................... 6

3.1.3 确定公比 ........................................................................................................................... 6

3.2 求出主轴转速级数Z： ............................................................................................................ 6

3.3 确定结构式和结构网： ........................................................................................................... 6

3.4 齿轮齿数的确定 ......................................................................................................................... 6

4 传动件参数的确定 ....................................................................................................................... 10

4.1 I轴的转速 ................................................................................................................................. 10

4.2 中间传动轴的转速 .................................................................................................................. 10

4.3 主轴转速的确定 ....................................................................................................................... 11

4.4 其他传动件计算转速的确定 ................................................................................................ 11

5 传动件的设计.................................................................................................................................. 13

5.1 V型带传动设计 ........................................................................................................................ 13