立铣刀anatomy

端铣刀的解剖学

立铣刀功能,可以在工具的说明中列出许多不同的尺寸。要了解每个维度如何影响刀具的选择是很重要的,以及如何哪怕是很小的选择,可以使所有的差异,当刀具运动。

Flutes

沟槽是端铣刀认识到的最容​​易的部分。这些是工具,允许芯片形成和排出深螺旋状沟槽。简单地说,长笛是允许的端铣刀切割其边缘解剖的一部分。

立铣刀笛子

One consideration that must be made during tool selection isflute count,这是我们以前了深入的探讨。一般来说,降低长笛计数,较大的槽谷 - 切削刃之间的空的空间。该空隙会影响工具的实力,但也允许更大的芯片与像软或粘性材料的切割,理想的深处较重aluminum。When machining harder materials such as,工具强度变得更大的因子,以及更高的笛计数往往利用。

轮廓

The profile refers to the shape of the cutting end of the tool. It is typically one of three options: square, corner radius, and ball.

方形轮廓

方形轮廓的模具设有与被以90°角方形尖角的槽纹。

圆角半径

This type of tooling breaks up a sharp corner with a radius form. This rounding helps distribute cutting forces more evenly across the corner, helping to prevent wear or chipping while prolonging functional tool life. A tool with larger radii can also be referred to as “bull nose.”

球概况

This type of tooling features flutes with no flat bottom, rounded off at the end creating a “ball nose” at the tip of the tool.

Cutter Diameter

The cutter diameter is often the first thing machinists look for when choosing a tool for their job. This dimension refers to the diameter of the theoretical circle formed by the cutting edges as the tool rotates.

铣刀直径

Shank Diameter

柄直径是柄的宽度 - 即由所述保持工具的非切削端工具托架。选择工具时,确保柄是持有人正在使用正确的尺寸测量这是需要注意的重要。柄直径需要严格的公差和同心度,以便正确地适应任何持有人。

Overall Length (OAL) & Length of Cut (LOC)

Overall length is easy to decipher, as it is simply the measurement between the two axial ends of the tool. This differs from the length of cut (LOC), which is a measurement of the functional cutting depth in the axial direction and does not include other parts of the tool, such as its shank.

Overall Reach/Length Below Shank (LBS)

An end mill’s overall reach, or length below shank (LBS), is a dimension that describes the necked length of达到ed tools。它是从颈缩部的刀具的切削端部的底部的开始测量的。颈部缓解允许排屑空间并且防止柄部从在深凹槽铣削应用摩擦。这将在下面以减少的颈部上的工具的照片示出。

立铣刀neck

螺旋角

The helix angle of a tool is measured by the angle formed between the centerline of the tool and a straight line tangent along the cutting edge. A higher helix angle used for finishing (45°, for example) wraps around the tool faster and makes for a more aggressive cut. A lower helix angle (35°) wraps slower and would have a stronger cutting edge, optimized for the toughest roughing applications.

helix angle

的40°适度螺旋角将导致能够执行基本粗加工,开槽的工具,而精加工具有良好的效果的操作。实施该槽纹之间略有不同的螺旋角是在一些用来对抗颤的技术高性能模具。一种可变螺旋创建切口之间不规则定时,并且可以抑制混响,否则可能导致震颤。

沥青

间距是所述切削刃之间的径向分离的在沿切口的长度,在端铣刀的端最明显的一个给定的点的程度。使用具有均匀螺距作为一个例子的四刃工具,每个槽将90°分开。类似variable helix, variable pitch tools have non-constant flute spacing, which helps to break up harmonics andreduce chatter。间隔可以是次要的,但仍然能够达到预期的效果。使用具有可变间距作为一个例子的四刃工具,凹槽可以被隔开的90.5度,88.2度,90.3度,和91度(共计360°)。

可变螺距

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11 replies
  1. Caden Dahl
    Caden Dahl 说:

    I really like how well you went into detail with each of the bits of a mill. I would bet that people only know about the flute, and even then, may not know that it’s called that. As you said, having the proper helix angle would be quite important when trying to go through certain materials as with a wrong angle, you might struggle to cut the material.

    Reply
  2. 神保
    神保 说:

    我只是不明白这一点。具有较高螺旋角立铣刀将如何切“更积极”?具有较低的螺旋角立铣刀,应每转一圈进一步抬起芯片。这是不是做出更加积极的剪裁,particullarly暴跌或加工槽时?请解释。

    Reply
    • Jeff Rauseo
      Jeff Rauseo 说:

      Hi Jimbo,

      当涉及到一个较低的螺旋消除芯片速度更快,我们倾向于不同意。作为一个螺旋变浅,每个芯片上的垂直力变得不那么,因此无法提升芯片一样迅速。作为螺旋变得越来越少,有芯片上的更少的提升力,并且它们在远慢的速率上下移动。较高的螺旋实际上将解除芯片超过更低的螺旋。

      我们认为你提出了关于高螺旋角,以及如何环绕的工具更快,使得对于一个积极的切大点,我们认为,这可能会产生误导。我们会返工这部分以提供更清晰。我们的意思是,有优点,使用在HEM时尚高螺工具,因为较高的螺旋导致刀具和工件之间的接触更多的积分。这有助于稳定地提供更快的削减,甚至在薄壁应用提供更高的稳定性。当我们说“积极的”,我们指高螺旋少其使用在HEM的更本质,尤其是。较高的螺旋比下螺旋更积极由于在工件上更高的剪切力和较高的提升力,从而可以获得过高在某些工件夹具的情况。

      最后,提供您点的详细清晰度芯片必须通过被疏散的笛子被举起来,因为没有别的地方的筹码去这是演习正确的。对于立铣刀,特别是在低径向接合的情况下,如与HEM,芯片被沿径向喷射并没有真正得到通过凹槽向上移动的机会。垂直运动的那少量的实际上是更具有较高的螺旋。

      Reply
  3. Steve Tavolacci
    Steve Tavolacci 说:

    没有做很多研究立铣刀的可变螺距,我刚刚得知一个不错的小片的信息对我今后的铣削任务!我也很欣赏你在这里给出的解释,伟大的信息的人!
    再次感谢哈维工具!

    Reply
    • Tim Lima
      Tim Lima 说:

      你好凯尔,

      如果你给我们的技术团队一个电话,我们很乐意帮助你,你可能有任何工具问题。您可以通过800-645-5609与我们联系。

      Thanks!

      Reply
  4. 拉菲克·穆罕默德BIN罗斯曼
    拉菲克·穆罕默德BIN罗斯曼 说:

    你好,哈维provide some information on and details about Clearance angle, rake angle, and number of flutes together with some parameter of the geometrical features ?

    Reply

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