摘 要

C6150车床

C6150主轴箱是车床的主要基础件和支承拌之一，也是较为典型、比较复杂、技术条件要求较为严格、废品率较高的箱体类铸件．其底部盛油不得渗漏，上部开口为箱口。床头箱生产一直沿用传统铸造工艺方案，其铸件浇注位置选择箱口朝下，箱底朝上，分型面在铸件中部最大截面处， 两箱手工模板造型。铸件内腔由两壁隔开三个空腔， 是由三个主型芯形成，落在下箱，术质芯盒．手工制芯．该方案的长处在于主型芯较小，形状较筒单，芯盒制造、制芯都较方便，型芯烘干和下芯位置也一样，下芯、合箱都很方便。

    本说明书对于C6150车床主轴箱进行设计，其中包括：

主传动系统的运动设计有:确定极限转速、确定公比、确定转速级数、确定结构网和结构式、绘制转速图、确定齿轮齿数和拟定传动系统图。

主运动部件的结构设计有：带传动的设计、确定各种计算转速、确定齿轮模数、确定各轴最小直径和设计部分主轴主件。

设计完成后轴与轴承的校核：轴的校核主要通过轴颈、结构、运动等计算出轴最大承受的力量，能够正常工作的时间。轴承则通过与每根不同的轴的连接，确定要用的轴承，选出最好的轴承，最终确定轴和轴承是否达到要求。

其中最主要的部分则是主轴部件结构：C6150的主轴部件结构的剖面部分是以前支撑为主，后支撑为辅的三支撑部件。前、中支撑分别是深沟球轴承和圆锥滚柱轴承，螺母通过蝶形弹簧来控制预紧力和补偿热膨胀。后支撑是一只单列向心球轴承，它在箱体支撑孔。

关键词： 机床, 轴, 床头箱   

Abstract

      The spindle box is the foundation and support of the lathe is one of the typical mix, also, more complex, technical requirements more stringent, the higher rejection rate of casting the box oil leakage. Not, the opening of the upper part is the box. The headstock traditional casting process, the casting pouring position selection box mouth down, bottom up, parting surface in the casting middle maximum cross-section, two boxes of hand shape by template. Casting cavity is composed of two wall three cavities, which is composed of three main core formation, fall on a lower box, operation box handmade quality core . The scheme has the advantage of main core is small, relatively simple, core box core making manufacture, convenient, core drying and core the position is the same, the core, a box is very convenient.

Main transmission system design is: to determine the movement speed, and determine the speed, structure, and structured, rendering speed diagram, the pinion gear transmission system and the plan.

The moving parts of structure design: belt transmission design and calculation speed, determine the gear module, each shaft diameter and the design of main shaft parts.

One of the most important part is the spindle structure: C6150spindle structure section was previously support, back support supplemented by three supporting parts. Ago, supporting are deep groove ball bearing and tapered roller bearing, the nut through the butterfly spring to control the pretightening force and to compensate for thermal expansion. After supporting a single-row radial ball bearing, which in the body supporting hole.

Key words: Machine tool, Check,  Berth box

目  录

第一章 引言 1

第二章 设计计算 4

  2.1设计目的 4

  2.2运动设计 4

  2.3动力设计 8

  2.4齿轮强度校核 12

  2.5 主轴挠度的校核 16

  2.6主轴最佳跨距的确定 17

  2.7各传动轴支承处轴承的选择 18

  2.8 主轴刚度校核 18

  2.9结构设计及说明 20

结论 29

参考文献 30

致谢 31