Climb Milling vs Conventional Milling: A Comparison

The milling process cuts the material from the workpiece. The components are produced after the material is removed with the help of a rotating milling tool.

There are two processes of milling, climb milling vs conventional milling, and these two have their own pros and cons. If you want to learn about the two of these methods, read the guide below.

What is Climb Milling?

Climb milling is also called down milling, and it is a process in which the rotation of the cutting tool and workpiece is in a similar direction. Climb milling is a process in which the chance of recutting is zero because the teeth of the tool climb the workpiece when the process of milling is done.

The cut chips are deposited at the back of the cutter. The process of milling starts with the complete thickness, but as soon as the cutting progresses, the thickness starts to decrease.

Advantages of Climb Milling

The advantages of climb milling are as follows:

• The cutting tool used in the process of climb milling offers an improved service life, and the tool doesn't go through any stress. It passes through low deflections and heat generation, which improves its life.
• The workpiece doesn't pass through recutting in the process of climb milling. The chips are even deposited behind the cutter, and hence, the finish of the components is seamless.
• The climb milling process generates less heat, and the load is also low. Since the direction of cutting is downward, the pressure on the workpiece is minimal.
• Climb milling is a process that uses downforce, which results in reduced chatter during the process of machining.

What is Conventional Milling?

Conventional milling involves tools and workpieces rotated in opposite directions. It is a conventional Fraisage CNC process. The process of conventional milling includes chip production, which starts from zero but tends to increase with time. In this process, the cutter moves upwards.

Advantages of Conventional Milling

Conventional milling benefits are as follows:

• Climb milling pulls the part towards the operator and cuts the components downwards. Conventional milling is done in the opposite direction. Hence, the machinists have improved control in conventional milling, which offers more stability.
• There are zero backlashes in conventional milling as conventional milling doesn't pull the table up, and hence, stability is ensured.
• The process of conventional milling has a high tendency for the cutter to deflect from the part. It ensures that the chances of unintentional cuts are minimized, and if they do occur, the depth is negligible.

Climb Milling vs Conventional Milling

Climb vs conventional milling differ in two important aspects. The two of these aspects and the way they differ in these processes are discussed below:

Tool Deflection and Cut Accuracy

Conventional milling gives an advantage when it comes to tool deflection. The direction of forces is parallel to the tool feed, which leads to more control of the process and fewer errors.

In climb milling, the accuracy of the cut can be compromised as the component and deflection are perpendicular.

Finition de la surface

The surface finish of the component is better in climb milling as the chip formation is minimal. In conventional milling, it is suitable for rough parts.

When to Use Climb vs Conventional Milling

There are some considerations to make when it comes to choosing between climb milling and conventional milling.

Conventional milling is suitable if you want to remove a rough material; it is not suitable for final cuts because it creates a rough surface. Also, conventional milling is suitable for the handheld router. As far as climb milling is concerned, do not use it for oxidized material, and also be aware of its backlash to ensure safety.

En résumé

The two of these processes, climb milling and conventional milling, are suitable for versatile applications, but which one you should opt for depends on the nature of the component. Hence, consider factors like the surface finish required and the application of the part before you choose the process.

DEK's Custom CNC Milling Services

Nous, à DEK are known for offering custom CNC milling services. We offer to manufacture parts based on your requirements that suit your applications. So, next time you have a new project, get in touch with us. We will provide you with components that are versatile, precise, and equipped with an excellent surface finish.

FAQ

When to choose climb milling and when to choose conventional milling?

Climb milling is a better option when you are cutting less than half of the diameter of the cutting tool. If you are cutting more than half of the diameter of the cutting tool, then conventional milling would be a better choice.

What direction is considered to be the best for milling?

The best direction for milling is downward, as it helps to reduce the chip thickness by the end of the cut.

Is milling better or drilling better?

Milling is a highly precise method that offers improved surface finishing compared to the process of drilling.