Before The Cnc Machining Center Can Prevent The Tool From Hitting The Problem, Let's Talk About Why The Cnc Machining Center Will Hit The Knife.
The Reasons For The Collision May Be Summarized As The Following Reasons:
1. Human Error Of The Operator
The Majority Of Cnc Machining Center Collisions Are Caused By Operator Errors. For Example, In The Process Of Tool Setting, The Speed Of The Machine Tool Drive Shaft Is Too Fast, Which Causes The Tool To Collide; For Example, The Coordinate Value Of The Machine Axis Is Entered Incorrectly, Which Leads To Spindle Processing. Knife Hits In The Process And So On. Therefore, Improving The Professionalism And Sense Of Responsibility Of The Machining Center Operators Is The Best Way To Prevent The Machining Center From Hitting The Knife.
2. Workpiece Clamping Failure
1) The Machine Tool Hitting May Also Be Caused By The Failure Of The Clamping Of The Machined Workpiece. The Machined Workpiece Is Loose During The Machining Process, And The Parts Will Move Due To The Cutting Force Of The Tool. At This Time, It Is Easy To Cause The Tool To Hit.
2) For Many Automatic Processing Production Lines, There May Be Clamping Errors Caused By Inaccurate Positioning Of Parts, And There May Be Deviations In The Placement Position, Resulting In Improper Clamping Of Parts. If There Is No Corresponding Workpiece In-position Detection Switch, The Tool Is In Place. A Knife Collision Accident May Occur During The Cutting Process.
3) During The Machining Process Of The Machine Tool, The Wear And Damage Of The Tool Can Also Easily Cause The Machine Tool To Hit The Tool. The Tool Loses The Cutting Force, But The Feed Of The Machine Tool Does Not Stop. At This Time, It Is Easy To Cause The Tool To Hit. Real-time Monitoring Of The Load In The Direction, If There Is An Abnormality, It Must Be Able To Actively Stop The Machine, So As To Minimize The Damage To The Machine Tool.
3. Machine Movement Failure
The So-called Machine Tool Failure Refers To The Out-of-control State Of The Operating System Of The Machine Tool. For Example, When The Machine Tool Is Executing A Processing Program, Its Processing Path Does Not Follow The Path Of The Processing Program, But A Large Deviation Occurs. At This Time, The Machine Tool Will Hit The Tool.
How To Prevent Knife Collision In Cnc Machining?
1. Before Simulating Processing, Go To The Running Interface To Confirm Whether The Machine Tool Is Locked.
2. When Verifying The Program, The Machine Tool Is Locked And The Tool Is In Simulated Operation Relative To The Workpiece Processing (absolute Coordinates And Relative Coordinates Are Changing). At This Time, The Coordinates Do Not Match The Actual Position, And The Method Of Returning To The Reference Point Must Be Used. Ensure That The Machine Zero Coordinate Is Consistent With The Absolute And Relative Coordinates.
3. When The Machine Tool Is Overtravel, You Should Press The Overtravel Release Button And Move It In The Opposite Direction Manually Or Manually To Eliminate It. But If The Direction Of Release Is Reversed, It Will Cause Damage To The Machine Tool. Because When The Overtravel Release Is Pressed, The Overtravel Protection Of The Machine Tool Will Not Work, And The Travel Switch Of The Overtravel Protection Is Already At The End Of The Travel. At This Time, It May Cause The Workbench To Continue To Move In The Overtravel Direction, Eventually Pulling The Lead Screw And Causing Damage To The Machine Tool. The Cursor Position Is Incorrect When The Specified Line Is Running. When A Specified Line Is Run, It Is Usually Executed Downward From The Cursor Position. For The Lathe, It Is Necessary To Call The Tool Offset Value Of The Used Tool. If The Tool Is Not Called, The Tool Of The Running Program Segment May Not Be The Desired Tool, And It Is Very Likely That The Tool Collision Accident May Occur Due To Different Tools. Of Course, The Coordinate System Such As G54 And The Length Compensation Value Of The Tool Must Be Called First On The Machining Center And Cnc Milling Machine. Because The Length Compensation Value Of Each Tool Is Different, It May Cause Tool Collision If It Is Not Called.
In Short, Cnc Cnc Machining Center Has High Machining Accuracy, Good Dimensional Stability, Low Labor Intensity, And Convenient Modern Management. However, Due To Improper Operation Or Programming Errors, It Is Easy To Cause The Tool Or Tool Holder To Hit The Workpiece Or The Machine Tool. The Lighter Will Damage The Tool And The Processed Parts, And The Severer Will Damage The Machine Tool Components, Resulting In The Loss Of The Machining Accuracy Of The Machine Tool, Or Even Cause A Personal Accident. Therefore, From The Point Of View Of Maintaining Accuracy, The Tool Must Never Collide With The Machine Tool Or Workpiece In The Use Of Cnc Machine Tools.
