Difference between single point and multipoint cutting tool

A cutting tool, also known as a cutter, is a wedge-shaped device that compresses the workpiece material during machining in order to shear away extra material and achieve the desired shape, size, and precision.

The fundamental difference between a single and a multi-point cutting tool is that a single-point cutting tool has only one main cutting edge, whereas a multi-point cutting tool has multiple cutting edges.

So, in order to properly understand, this article explains the basic differences between single-point and multi point cutting tool.

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Cutting Tool:

Cutting tools are categorised into three groups based on whether they have one or more major cutting edges:

A single-point cutting tool has only one primary cutting edge, a double-point cutting tool has two cutting edges, and a multi-point cutting tool has more than two main cutting edges, as the name implies.

The number of cutting edges in a cutter affects a variety of factors, including chip load, material removal rate, cutting force, and cost.

The next sections go through the differences between single-point and multi-point cutting tools.

Difference between single point and multipoint cutting tool-

Some key differences between these Tools are listed in the table below:

Single Point Cutting ToolMulti-Point Cutting Tool
In the cutter body of a single-point cutting tool, there is only one primary cutting edge.The cutter body of multi-point cutting instruments contains many cutting edges.
Only one main cutting edge remains in contact with the workpiece while milling with a single-point cutting tool.In a process of machining with a multi-point cutting tool, more than one cutting edge engages in material removal activity.
The average chip load per tooth is significant.The effective chip load per tooth decreases due to the presence of several cutting edges.
The rate of heat generation and subsequent rise in tool temperatureĀ because one cutting edge is in continuous contact with the workpiece.When the cutter is not in contact with the workpiece, the heat evaporates due to consecutive contact and release. As a result, the rate of increase in tool temperature is slow.
If a cutting edge breaks unexpectedly, the entire process must be suspended until the broken tool is replaced with a new one.If one cutting edge breaks, the cutting process can be resumed with ease by utilising other cutting edges.
Single point cutting tool design and production are easier.Multi-point cutting tools are complex to design and manufacture.
When machining using single-point cutting tools, a low feed rate and depth of cut are usually used. As a result, productivity and material removal rate decreasesWhen using a multi-point cutting tool for machining, a higher feed rate can be used. MRR and productivity both rise as a result of this.
This one has a good surface quality in terms of precision.The surface finish is boosted significantly with a multi-point cutting tool.
Cutting with a single point is a low-cost method.Multi-point cutting is a tool with a high price tag.
The rate of tool wear is really high.The rate of tool wear is quite low.
Examples of single-point cutters:

  • Turning tool
  • Shaping tool
  • Planning tool
  • Slotting tool
  • Boring tool
Examples of multi-point cutters:

  • Milling cutters
  • Hobs
  • Broach
  • Grinding wheels
  • Reamer

 

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You might be interested in learning more about the following related Articles:

Single Point Cutting Tool: Definition, Nomenclature, Advantages and Applications

Double Point Cutting Tool: Definition, Example, Advantages and More

Multi Point cutting Tool: Definition, Examples, Advantages and More

Advantages and Disadvantages of Multi-point Cutting Tool

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