I. Diagnosis and Countermeasures for the Top 10 CNC Machining Issues
1. Workpiece Over-Cutting Issue
Phenomenon Analysis
1): Tool elastic deformation causing machining deviation
2): Inconsistent execution of operating standards
3): Uneven material allowance distribution (Sidewall: 0.5mm / Bottom: 0.15mm)
4): Improper cutting parameter settings
Professional Solutions
➊: Three key principles for tool selection: Larger diameter > Shorter cutting
length > Higher rigidity
➋: Add corner cleaning processes to maintain uniform material allowance
on sidewalls and bottom surfaces
➌: Key parameter adjustments:
Reduce tolerance range to ±0.02mm
Add R0.5 fillet at corners
Enable SF adaptive feed rate function
2. Coordinate System Calibration Errors
Key Risk Factors
1: Precision deviations in manual operations
2: Measurement interference from burrs
3: Magnetic effects causing errors
Precision Calibration Solutions
➊ : Use ceramic probes to eliminate magnetic interference
➋ : Perform three repeated calibrations and take the average value
➌ : Four-step burr removal process（Oil stone grinding → File trimming → Cloth cleaning → Hand verification）
2. Coordinate System Calibration Errors
Key Risk Factors
1: Precision deviations in manual operations
2: Measurement interference from burrs
3: Magnetic effects causing errors
Precision Calibration Solutions
➊ : Precision deviations in manual operations
➋ : Measurement interference from burrs
➌ : Magnetic effects causing errors
3. Tool System Error Control
Error Sources
1): Inconsistent tool-setting reference points
2): Tool insert installation errors
3): Mixed tool type deviations
Precision Calibration Solutions
➊ : Calibrate using dedicated tool presetters
➋ : Standardize tool holder cleaning procedures
➌ : Establish a tool error compensation database
4. CNC Collision Prevention in Programming
High-Risk Scenarios
1): Insufficient safety height settings
2): Incorrect tool parameter input
3): Coordinate system setting deviations
Intelligent Collision Prevention System
➊: Dual safety parameter verification mechanism
➋: AI-assisted programming system
➌: Automatically generates 3D machining simulations
➍: Real-time collision detection and alerts
5. Operator Safety Guidelines
Typical Errors
1): Incorrect axial movement direction
2): Mismatched tools
3): Manual operation mishandling
Five-Layer Safety Assurance
➊: Dual-operator review system
➋: Electronic safety fence installation
➌: RFID tool identification system
➍: Mandatory Z-axis priority lift process
➎: Monthly operator certification assessments
II. Golden Rules for Cutting Parameter Optimization
Cutting Parameter Decision Matrix
| Parameter Combination | Applicable Scenarios | Advantages |
| Low speed + High feed rate | Titanium alloy / Hardened steel machining | Extends tool life by 30% |
| High speed + Low feed rate | Precision aluminum machining | Achieves surface roughness Ra < 0.8 |
| Variable parameter machining | Composite material layered cutting | Prevents material delamination |
Advanced Optimization Strategies
Intelligent Parameter Matching System
1: Automatically recommends parameters based on a material database
2: Real-time vibration monitoring with automatic adjustments
Tool Lifecycle Management
1: Integrate RFID chips to track tool usage cycles
2: Establish a wear prediction model
Thank you for reading. We hope this article has been helpful to you. Of course, you are also welcome to contact us via email or instant chat. We are more than happy to assist you in solving your problems.
