变速

It is consisted of master pincer and back pincer,its nose opening is big.It is powered by a hydraulic motor with low speed and high torque,and driven by spur gear,4-fift gearing ,overhand mounting and pneumatic advancing and returningl.

由主钳和背钳组成，钳头开口大，低速大扭矩油马达输入动力、直齿圆柱齿轮传动，四档变速，悬吊安装，气动进退。

The transmission fork and lug on each change-shaft is fastened by the spring pin (Q5280835) and

叉轴上的变速叉和导块均由波口弹性销(Q 5280835)和波口弹性销(Q5280535)固定。

With the split nut closed, the carriage is moved along the lead screw by direct drive without possibility of slippage.

这位聪明的英国人还发明了一种把主轴和丝杠相连接的变速装置，这样就可以切削螺纹。

FEATURES: Infinitely variable speed of spindle obtained by inverter, constant surface speed processing, rapid brake of spindle, mixed step motor, smooth running in low speed, hardened and precision-ground bed ways.

特点：主轴采用变频器实现无级变速，恒线速切削功能，主轴快速制动，混合式步进电机，低速运行平稳，床身导轨表面经淬火和精密磨削。

DWZSZhongshan Deway Speed Reducer Machinery Manufacture Co., Ltd.

中山市迪威变速机械制造有限公司CHINA

The design of circulating water pump is fine, uses the multistage belt pulley change speed, to satisfies the dyeing craft of different type skein.

循环水泵设计优良，采用多级皮带轮变速，以满足不同类型绞纱的染色工艺。

At present, there are drilling more than 150 plants, with an annual output of various drilling about 1 million units, export over 20 million units, the drilling of speed through a pulley shift to resolve the pagoda, the governor need to stop the process, open the protective Enclosures, manual transmission, and other procedures, the process cumbersome and poor security, and is governing, not transferred to the spindle speed corresponding to the different materials of various aperture drilling at the best speed, the production efficiency is low.

目前，全国有钻床厂150多家，年产各种钻床100万台左右，出口20多万台，这些钻床的变速都是通过一对宝塔皮带轮换档解决的，调速过程需要停车、打开防护罩，手工换档等程序，操作过程繁琐且安全性差，并且是有级调速，不易使主轴转速调到对应于不同材质的各种孔径钻削时的最佳转速，因此生产效率也低。

First, we should be familiar with parts and understand their role, which is located lathe speed change mechanism, the main effect from the shift.

首先我们要熟悉零件和了解其作用，它位于车床变速机构中，主要起换档作用。

The topic is The design of the drilling machine fixture for Processing lathe shifting fort upper thread bottom hole, and lathe shifting fort located in the lathe speed institutions, mainly from the shift so that the spindle rotary movement of workers in accordance with the requirements of work, have the necessary speed and torque Role.

本课题是车床拨叉上螺纹底孔加工钻床夹具设计，而车床拨叉它位于车床变速机构中，主要起换档，使主轴回转运动按照工作者的要求工作，获得所需的速度和扭矩的作用。

With this system the table speed can be controlled from zero up to the maximum speed without any mechanical shifting gear mechanism.

采用了这一结构，就可以控制工作台的速度由零直到最大转速，而不需要使用任何机械齿轮变速机构。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。