What is the cutting accuracy of a double angle circular knife

Sources：www.cssjlgj.com | PublishDate：2026.01.26

Double angle circular cutting tool is a circular cutting tool with a double angle blade design. Its cutting accuracy is at a high level and is suitable for most industrial cutting scenarios. The core accuracy performance and influencing factors are as follows:
1、 Core precision advantage
1. High flatness of incision
The dual angle blade design forms a "shear+extrusion" composite cutting mode, with blade angles typically ranging from 30 °/45 ° and 40 °/50 ° combinations, which can effectively reduce material tensile deformation. When cutting materials such as leather, rubber, thin metal sheets, non-woven fabrics, etc., the deviation of the incision perpendicularity is ≤ 0.05mm, and the burr free rate can reach over 95%, which is better than the tearing cutting effect of a single angle circular knife.
2. Strong consistency in size
When paired with a precision rotary drive mechanism (such as servo motor+ball bearing), the radial runout of the tool rotation is ≤ 0.02mm, and the positioning accuracy of a single cutting repetition can be controlled within ± 0.03mm. When cutting workpieces of the same specifications in batches, the dimensional deviation fluctuation is small, meeting the standardization requirements of automated production lines.
3. Accuracy stability for adapting thin and thick materials
When cutting 0.1-2mm thin materials (such as copper foil, paper, and film), it is not easy to encounter "edge biting" and "delamination" problems, and the straightness error of the cut is less than 0.1mm/m;
When cutting 3-8mm thick materials (such as cardboard and PVC sheets), the force of the double edged blade can reduce tool deflection and ensure cutting accuracy in the depth direction.
2、 Key factors affecting cutting accuracy
1. Parameters of the cutting tool itself
Sharp edge sharpness: When the radius of the rounded edge is less than 0.01mm, the cutting accuracy is good, but after wear, the accuracy will decrease by 10% -20%;
Tool material and heat treatment: High speed steel (HSS) double angle circular cutting tools have moderate accuracy stability, while hard alloy (WC) material cutting tools have higher hardness and long-term use with radial runout variation<0.005mm, resulting in better accuracy retention.
2. Equipment matching accuracy
Spindle speed and stability: When the speed fluctuation is ≤ 50r/min, it can avoid the notch ripple caused by tool vibration;
Feed speed matching: Adjust the feed speed according to the thickness of the material (such as 2-5m/min for thin materials and 0.5-2mm/min for thick materials). If the speed is too fast, it may cause the incision to deviate.
3. Characteristics of the material being cut
For fiber materials such as fabrics and non-woven fabrics, cutting accuracy is greatly affected by material tension and requires the use of a tension control system; For rigid materials such as thin aluminum plates, it is necessary to ensure the vertical contact between the cutting tool and the material, otherwise it is prone to oblique edge errors.
3、 Applicable precision scenarios
The cutting accuracy of the double angle circular knife can meet the needs of industrial scenarios such as packaging printing, leather processing, automotive interior cutting, and electronic material die-cutting. If higher accuracy (such as ± 0.01mm) is required, laser cutting or CNC punching equipment should be used.

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