CNC machining of these problems, is the reason? How to solve?

1. The Workpiece Has Precise Dimensions But Poor Surface Finish

Causes Of The Problem: The Tool Tip Is Damaged Sharp; The Machine Tool Resonates Is Placed Stably; The Machine Tool Is Crawling; The Processing Technology Is Good.

Solution: If The Tool Is Sharp After Being Worn Damaged, Re-Sharpen It Choose A Better Tool To Re-Align It; If The Machine Tool Resonates Is Placed Unsteadily, Adjust The Level, Lay A Foundation, Fix It Steadily; The Reason For The Machine Crawling Is That The Slide Rails Are Severely Worn, The Ball Screw Is Worn Loose, The Machine Tool Should Be Maintained, The Wire Should Be Cleaned After Get Off Work, Lubricating Oil Should Be Added In Time To Reduce Friction; The Coolant Suitable For Workpiece Processing, Try To Use A Higher Spindle Speed While Meeting The Processing Requirements Of Other Processes.

2. The Workpiece Has A Taper Head Phenomenon

Causes Of The Problem: The Level Of The Machine Tool Is Adjusted Properly, One Is High The Other Is Low, Resulting In Unstable Placement; When Turning The Long Shaft, The Material Is Relatively Hard, The Tool Cuts Deeper, Causing The Tool To Let Go; The Tailstock Ejector Is Concentric With The Spindle.

Solution: Use A Spirit Level To Adjust The Level Of The Machine Tool, Lay A Solid Foundation, Fix The Machine Tool To Improve Its Durability; A Reasonable Process Appropriate Cutting Feed Rate To Prevent The Tool Being Forced Giving Way; Adjust The Tailstock.

3. The Driver Phase Light Is Normal, But The Size Of The Processed Workpiece Is Sometimes Large Sometimes Small

Causes Of The Problem: The Machine Tool Slide Runs At High Speed For A Long Time, Causing The Screw Bearing To Wear; The Repeat Positioning Accuracy Of The Tool Holder Has Errors During Long-Term Use; The Slide Can Accurately Return To The Processing Starting Point Every Time, But The Size Of The Processed Workpiece Still Changes. This Phenomenon Is Generally Caused By The Spindle. The High-Speed Rotation Of The Spindle Causes Severe Wear Of The Bearing, Resulting In Changes In The Processing Size.

Solution: Use A Dial Indicator To Lean Against The Bottom Of The Tool Holder, Edit A Fixed Cycle Program Through The System At The Same Time, Check The Repeat Positioning Accuracy Of The Slide, Adjust The Screw Clearance, Replace The Bearings; Use A Dial Indicator To Check The Repeat Positioning Accuracy Of The Tool Holder, Adjust The Machine Replace The Tool Holder; Use A Dial Indicator To Check Whether The Workpiece Returns To The Starting Point Of The Program Accurately After Processing. If Possible, Inspect The Spindle Replace The Bearings.

4. The Workpiece Size Differs The Actual Size By Several Millimeters, There Is A Significant Change In One Axis

Causes Of The Fault: The Speed Of Rapid Positioning Is Too Fast, The Drive Motor Cannot React; The Mechanical Slide Lead Screw Bearing Are Too Tight Stuck After A Long Period Of Friction Wear; The Tool Holder Is Too Loose After Tool Change Cannot Be Locked Tightly; The Edited Program Is Wrong, The Head Tail Do Respond The Tool Compensation Is Canceled Before Completion; The Electronic Gear Ratio Step Angle Of The System Is Set Incorrectly.

Solution: If The Rapid Positioning Speed Is Too Fast, Then Properly Adjust The GO Speed, Cutting Acceleration Deceleration Time To Make The Driver Motor Work Normally At The Additional Operating Frequency; If The Machine Tool Is Worn The Slide Plate, Lead Screw Crane Bearings Are Too Tight Stuck, It Is Necessary To Readjust Correct; If The Tool Holder Is Too Loose After The Tool Is Changed, Check Whether The Tool Holder Reversal Time Is Satisfactory, Check Whether The Worm Gear Inside The Tool Holder Is Worn, Whether The Gap Is Too Large, Whether The Installation Is Too Loose, Etc.; If It Is Caused By The Program, It Is Necessary To Modify The Program, Improve It According To The Requirements Of The Workpiece Drawing, A Reasonable Processing Technology, Write The Correct Program According To The Instructions Of The Manual; If It Is Found That The Dimensional Error Is Too Large, Check Whether The System Parameters Are Set Reasonably, Especially Whether The Parameters Such As The Electronic Gear Step Angle Are Damaged. If This Phenomenon Occurs, It Can Be Measured By Using A Dial Indicator.