Why do aluminum materials have burrs when cut? Chuda teaches you how to completely solve the issue from three dimensions！

I.Tool System: The “Root Killer” of Burr Problems

1. Incorrect tool selection directly leads to burrs
Aluminum belongs to plastic materials and is prone to sticking during cutting. However, many companies still use ordinary steel cutting tools, which is a common cause of burrs:

*Unreasonable number of teeth on the cutting tool: Excessive number of teeth can lead to poor chip removal, and aluminum chips melted from the aluminum material will adhere to the blade, forming chip lumps. During cutting, the surface of the work-piece is constantly scraped, resulting in continuous burrs; If the number of teeth is too small, it will lead to excessive cutting per tooth, intensified tool vibration, and the formation of irregular burrs.

*Mismatched tool material: Ordinary high-speed steel cutting tools have insufficient hardness, and wear out quickly when cutting aluminum materials. The blade quickly becomes dull, and blunt cutting will forcefully tear the surface of the aluminum material, forming severe tearing burrs; Uncoated cutting tools are also prone to bonding with aluminum materials, exacerbating the problem of sticking.

Chuda Solution:
For aluminum cutting, we recommend using a special aluminum saw blade made of hard alloy. This type of saw blade features a large rake angle and a large chip groove design, with teeth that are suitable for aluminum cutting needs. Combined with a special coating, it can effectively reduce the occurrence of sticking and chip buildup. The special aluminum saw blade that comes standard with the Chuda fully automatic aluminum cutting machine has been repeatedly tested and optimized, resulting in significantly improved blade sharpness and chip removal performance, reducing the risk of burrs from the source of the tool.

2. Improper installation and maintenance of cutting tools exacerbate burr problems

In addition to the cutting tool itself, the details of installation and maintenance also directly affect the cutting quality:

*Tool installation deviation: If the saw blade is not leveled during installation, or if there is wear or impurities on the flange, it will cause radial deviation when the saw blade rotates at high speed, resulting in uneven contact between the blade and the aluminum material, forming wavy burrs.

*Failure to replace tool wear in a timely manner: Long term use of tools may result in blade wear, tooth breakage, and other issues. Continuing to use them can increase cutting resistance, not only producing burrs, but also damaging the equipment spindle.

Chuda Solution:

Chuda equipment is equipped with high-precision flanges and leveling devices, which can ensure that the coaxiality error during saw blade installation is controlled within 0.01mm, avoiding burrs caused by installation deviation. At the same time, our after-sales team will provide customers with regular inspection and maintenance guidance for cutting tools, helping companies establish a tool replacement cycle and avoid excessive tool wear affecting cutting quality. II. Equipment rigidity and stability: suppress vibration and reduce secondary cutting

The rigidity and operational stability of equipment are key factors affecting cutting quality. The vibration generated during the cutting process can cause unstable contact between the blade and the aluminum material, resulting in "secondary cutting", which is also an important cause of burrs.

1. Insufficient rigidity of the equipment and significant vibration during the cutting process

Some small or old equipment have thin bed structures and insufficient spindle rigidity, which can easily cause resonance when cutting aluminum materials. Especially when cutting large section aluminum or high hardness aluminum, vibration can cause the blade to bounce up and down during cutting, resulting in deviation of the cutting trajectory, irregular burrs, and even edge breakage of the work-piece.

2. The clamping system is not secure, causing burrs due to work-piece shaking

If the work-piece is not firmly clamped during aluminum cutting, it will undergo slight displacement under the action of cutting force, and the blade cannot cut stably, resulting in burrs. Especially for thin-walled aluminum or slender profiles, insufficient clamping force or unreasonable clamping position will lead to more obvious shaking problems.Chuda Solution:
The Chuda fully automatic aluminum cutting machine adopts an integral casting bed structure, which has undergone aging treatment and has strong rigidity and high stability, effectively suppressing vibration during the cutting process; The spindle is driven by a high-precision servo motor, with stable speed and minimal jumping error. At the same time, the equipment is equipped with a multi-stage pneumatic clamping system that can automatically adjust the clamping force according to the size of the work-piece, ensuring that the aluminum material remains stable during the cutting process and avoiding burrs caused by work-piece shaking. Some models are also equipped with auxiliary support devices to provide additional support for cutting slender profiles, further enhancing stability.
 

III. Process parameters and cooling system: optimize cutting process, reduce tool sticking and thermal deformation

Reasonable process parameters and cooling methods are the key to reducing aluminum sticking and cutting temperature, as well as an important link in solving burr problems.

1. Mismatched cutting parameters result in abnormal cutting conditions

The unreasonable combination of cutting speed, feed rate, and rotational speed will directly affect the cutting effect:

-Low speed and excessive feed rate: Excessive cutting amount per tooth leads to a sharp increase in cutting resistance, making it difficult for the blade to cut the aluminum material smoothly. Instead, it forcefully tears, forming tearing burrs;
-High speed and low feed rate: The cutting temperature rises sharply, and the aluminum material is heated and melted, resulting in severe tool sticking. The melted aluminum chips will adhere to the cutting edge, scratching the surface of the work-piece and forming burrs;
-Cutting angle deviation: Deviation in the perpendicularity between the saw blade and the work-piece can cause the cutting surface to tilt, uneven force on the blade, and unilateral burrs.

2. Insufficient cooling and lubrication, exacerbating knife sticking and thermal deformation

During the aluminum cutting process, excessive cutting temperature can cause the aluminum to soften and adhere more easily to the cutting edge. At the same time, high temperature can cause thermal deformation of the work-piece, affecting cutting accuracy. Many companies use ordinary coolant or do not use coolant, which cannot effectively reduce cutting temperature and prevent tool sticking problems from being alleviated.

Chuda Solution:
Chuda Machinery provides customers with exclusive process parameter optimization services, tailored to different grades of aluminum materials (such as 6061, 7075, aluminum profiles, etc.), combined with equipment models, to provide accurate suggestions for speed, feed rate, and cutting angle parameters, ensuring a stable and smooth cutting process. At the same time, the equipment is equipped with a high-pressure cooling and lubrication system, which can accurately spray specialized cutting fluid into the cutting area, quickly reduce the cutting temperature, reduce the adhesion between aluminum chips and the blade, flush away chips, avoid secondary cutting, and completely solve the burr problem from the process level.
 Solving the problem from the source is the fundamental way to eliminate burrs!

The generation of burrs in aluminum cutting is never caused by a single factor, but by the combined action of cutting tools, equipment, and processes. Many companies attempt to cover up the issue of burrs through post polishing, which not only increases production costs but also fails to fundamentally improve product quality.
Chuda Machinery has been deeply involved in the field of aluminum cutting for many years, always focusing on solving customers' actual pain points. Through equipment structure optimization, specialized tool research and development, and customized process parameters, we help customers eliminate burr problems from the source. If your company is also troubled by cutting burrs, please feel free to contact Chuda Machinery. Our engineers will provide you with free process diagnosis and solutions, so that your aluminum cutting can say goodbye to burrs and achieve efficient and high-precision processing.