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晋升泰自攻螺丝介绍螺纹的各种加工方法

文章出处:人气:0发表时间:2017-11-07【 返回列表

自攻螺丝螺纹主要分连接螺纹和传动螺纹,对连接螺纹,其加工方法主要为:攻丝,套丝,车丝,滚丝,搓丝等。Self-tapping screw thread is mainly divided into connecting thread and transmission thread, the connection thread, its processing methods are: tapping, threading, car wire, rolling wire, Roll wire.

 

自攻螺丝 晋升泰精密(深圳)有限公司.jpg

 

  对传动螺纹,其加工方法主要为:粗精车---磨,旋风铣---粗精车等。On the drive thread, the processing methods are: coarse car --- grinding, whirlwind milling --- crude car and so on.

 

  1、螺纹切削Thread cutting

 

  一般指用成形刀具或磨具在工件上加工自攻螺丝螺纹的方法,主要有车削﹑铣削﹑攻丝﹑套丝﹑磨削﹑研磨和旋风切削等。车削﹑铣削和磨削螺纹时,工件每转一转,机床的传动链保证车刀﹑铣刀或砂轮沿工件轴向准确而均匀地移动一个导程。在攻丝或套丝时,刀具(丝锥或板牙)与工件作相对旋转运动,并由先形成的螺纹沟槽引导着刀具(或工件)作轴向移动。Generally refers to the use of forming tools or grinding tools in the processing of self-tapping screw thread method, the main turning ﹑ ﹑ milling ﹑ tapping wire ﹑ grinding ﹑ grinding and whirlwind cutting. When turning, milling and grinding threads, the drive chain of the machine guarantees that the turning, milling or grinding wheel moves precisely and uniformly along the workpiece axis by one lead per revolution of the workpiece. In tapping or threading, the tool (tap or die) relative rotation with the workpiece, and by the first formation of the thread groove guide the tool (or workpiece) for axial movement.

 

  螺纹车削在车床上车削螺纹可采用成形车刀或螺纹梳刀(见螺纹加工工具)。用成形车刀车削螺纹,由于刀具结构简单,是单件和小批生产螺纹工件的常用方法;用螺纹刀车削螺纹,生产效率高,但刀具结构复杂,只适于中、大批量生产中车削细牙的短螺纹工件。普通车床车削梯形螺纹的螺距精度一般只能达到8~9级(JB2886-81,下同);在专门化的螺纹车床上加工螺纹,生产率或精度可显著提高。Thread turning Turning lathes can be formed by turning or thread combing tools (see thread processing tools). Because of the simple structure of the cutter, it is the common method to produce the threaded workpieces in one-piece and small-batch. The threading with the screwdriver is efficient in production, but the structure of the cutter is complicated and only suitable for turning in medium and high volume. Fine teeth short thread workpiece. Ordinary lathe turning trapezoidal thread pitch accuracy generally only reach 8 to 9 (JB2886-81, the same below); in the specialized thread lathe processing thread, the productivity or accuracy can be significantly improved.

 

2、螺纹铣削Thread milling

 

  在螺纹铣床上用盘形铣刀或梳形铣刀进行铣削。盘形铣刀主要用于铣削丝杆﹑蜗杆等工件上的梯形外螺纹。梳形铣刀用于铣削内﹑外普通螺纹和锥螺纹,由于是用多刃铣刀铣削﹑其工作部分的长度又大于被加工螺纹的长度,故工件只需要旋转1.25~1.5转就可加工完成,生产率很高。自攻螺丝螺纹铣削的螺距精度一般能达 8~9级,表面粗糙度为R 5~0.63微米。这种方法适用于成批生产一般精度的螺纹工件或磨削前的粗加工。Milling on a thread milling machine with a disc cutter or comb cutter. Disc cutter is mainly used for milling trapezoidal thread on the workpiece such as screw, worm and so on. The comb type milling cutter is used for milling ordinary thread and taper thread inside and outside. Because it is milled by multi-blade milling cutter, the length of the working part is longer than the length of the thread to be machined, so the workpiece only needs to be rotated by 1.25 to 1.5 revolutions Complete, high productivity. Self-tapping screw thread pitch accuracy of the general can reach 8 to 9, the surface roughness of R 5 ~ 0.63 microns. This method is suitable for mass production of general-purpose threaded workpiece or roughing before grinding.

 

  3、螺纹磨削Thread grinding

 

  主要用于在自攻螺丝螺纹磨床上加工淬硬工件的精密螺纹。按砂轮截面形状不同分单线砂轮和多线砂轮磨削两种。单线砂轮磨削能达到的螺距精度为5~6级,表面粗糙度为R 1.25~0.08微米,砂轮修整较方便。这种方法适于磨削精密丝杠、螺纹量规、蜗杆、小批量的螺纹工件和铲磨精密滚刀。多线砂轮磨削又分纵磨法和切入磨法两种。纵磨法的砂轮宽度小于被磨螺纹长度,砂轮纵向移动一次或数次行程即可把螺纹磨到最后尺寸。切入磨法的砂轮宽度大于被磨螺纹长度,砂轮径向切入工件表面,工件约转1.25转就可磨好,生产率较高,但精度稍低,砂轮修整比较复杂。切入磨法适于铲磨批量较大的丝锥和磨削某些紧固用的螺纹。Mainly used in self-tapping screw thread grinder machining hardened workpiece precision thread. According to different cross-sectional grinding wheel grinder and multi-line grinding two. Single-line grinding wheel can achieve the pitch accuracy of 5 to 6, the surface roughness R 1.25 ~ 0.08 microns, wheel dressing more convenient. This method is suitable for grinding precision leadscrew, thread gauge, worm, small quantities of threaded workpiece and shovel grinding precision hob. Multi-line grinding wheel is divided into vertical grinding method and cut into the law two. Longitudinal grinding wheel width is less than the length of the thread was grinding, grinding wheel longitudinal movement of one or several trips to the thread to the final size. Cutting into the grinding wheel width greater than the length of the thread being ground, the wheel radial cut into the workpiece surface, the workpiece about 1.25 turn can be polished, high productivity, but slightly lower accuracy, wheel dressing more complicated. Slitting grinding is suitable for shredding larger batches and for grinding certain fastening threads.

 

  4、螺纹研磨Thread grinding

 

  用铸铁等较软材料制成螺母型或螺杆型的螺纹研具,对工件上已加工的自攻螺丝螺纹存在螺距误差的部位进行正反向旋转研磨,以提高螺距精度。淬硬的内螺纹通常也用研磨的方法消除变形,提高精度。Use a soft material such as cast iron to make a screw-type or screw-type lapping grindstone, and grind back and forth the pitch error of the tapped self-tapping screw thread on the workpiece to improve pitch precision. Hardened internal thread is also usually used to eliminate the deformation of the grinding method to improve accuracy.

 

  5、攻丝和套丝Tapping and threading

 

  攻丝是用一定的扭距将丝锥旋入工件上预钻的底孔中加工出内螺纹。套丝是用板牙在棒料(或管料)工件上切出外自攻螺丝螺纹。攻丝或套丝的加工精度取决于丝锥或板牙的精度。加工内﹑外螺纹的方法虽然很多,但小直径的内螺纹只能依靠丝锥加工。攻丝和套丝可用手工操作,也可用车床﹑钻床﹑攻丝机和套丝机。Tapping is to use a certain torque to screw the tap into the pre-drilled bottom hole in the workpiece to make the female thread. Taose is the use of teeth in the bar (or tube) workpiece cut out self-tapping screw thread. Tapping or Tapping processing accuracy depends on the accuracy of tap or die. Although the internal and external thread processing methods are many, but the small diameter of the internal thread can only rely on tap processing. Tapping and threading available manual operation, but also available lathe ﹑ drilling machine tapping machine and threading machine.

 

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  以上讲解的这些就是自攻螺丝介绍螺纹的各种加工方法,信息仅供大家参考!

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