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Is it desirable to make drawings to specification in order for frontline staff to read them?

2021-10-18 09:37:39
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I Found An Interesting Problem Online: The Front-Line Staff Couldn't Understand The Standard Drawings, The Boss Didn't Approve Them Praised The Non-Standard Drawings. It's Ridiculous. How Can We Solve This Problem? Please Follow Huiwen To Talk About It.


Xiao A: At The Beginning, I Marked Everything Like The OP, But Eventually I Found That Marking Was Useless. If There Were Any Problems, I Could Just Rework Fix Them. Now I Have Learned My Lesson Just Stick To The Basic Dimensions, Which Saves Time Worry!

Little B: It's That I Don't Understand, This Is A Question Of Responsibility? If Nothing Is Marked Something Goes Wrong, Can We Just Quibble? It's Like This Now, Don't Be Surprised!

Xiao C: When In Rome, Do As The Romans Do. Every Company Is Different. If You Follow The Standard, You Will Have A Hard Time Getting Along In The Company. Remember To Do As The Romans Do!

As I Understand It, The Drawings Must Be Standardized Complete; If The Drawings Themselves Are Wrong, Then If The Products Processed By The Workshop Have Problems Need To Be Scrapped, The Workshop Will Put The Blame On The Drawings. The Workshop Often Says: Because The Drawings Are Wrong, It Leads To Scrap. In This Case, The Person Who Draws The Drawings Will Bear A Lot Of Pressure. Therefore, Formal Drawings Must Have Several Reviews, Etc. Huiwen Zhizao Is A Machining Factory With More Than Ten Years Of CNC Processing Experience , With A Full Range Of Equipment, CNC Lathe/Milling/Grinding/Drilling/Processing. Partners With Parts Processing Needs Are Welcome To Call Us For Quotes.


Precision parts processing


According To What The Poster Said, I Guess That In Addition To Marking The Traditional Dimensional Tolerance, The Poster Also Marked The Geometric Tolerance, Theoretical Size, Position Degree, Etc. Such Drawings Should Be More Practical Can Better Express The Design Requirements. However, In The Current Factories, Especially At The Grassroots Level, There May Be Many People Who Can Really Understand Such Drawings. Most People May Only Understand One-Dimensional Linear Tolerances. If The Drawings Are Only For The Factory's Own Use, Should Practicality Be The Main Thing Specifications Be Secondary? If The Drawings Are For External Use, Should Specifications Be The Main Thing? In Order To Avoid The Situation The External Factory Scraps The Products In Batches, The Responsibility Will Be Put On The Drawings. It Feels Like: A Scholar Meets A Soldier, He Can't Explain His Reason Clearly.

I Feel The Same Way. As Soon As I Mark Something, The Workers Say, "It's Up To The Standard. I Can't Do It. You Can Do It Yourself." The Boss Also Says That The Processing Cost Is Necessary, OK! Only The Basic Dimensions Are Changed. In The End, The Precision Of The Product Is Up To Standard. They Say That Our Design Is Good Enough. They Understand Design As Drawing, Craftsmanship. Just Make It According To The Model. It's Really Annoying...

The Sentence I Hate The Most Is “The Precision Is Too High We Can’t Do It.” What I Hate The Most Is Asking For Lower Standards Then The Product Made, But Then Being Unable To Install It, Then Another Sentence: “It Was All Made According To The Drawings.” When I Hear Someone Say This, I Want To Beat Him Up.

I Know This. Since They Need Frontline Employees To Understand The Drawings, The Simpler The Better. They Certainly Can't Understand Geometric Tolerances. I Can Only Go Against My Own Knowledge Expertise Follow The Local Customs.

The Non-Standard Drawing Is Also A Constraint On The Slow Development Of China's Machinery!

Some Companies Just Do Rough Work There Is No Need For Fine Work. This Is A Practical Problem. Moreover, Many Workers Have Even Attended Technical Schools Are Apprentices Directly After Graduating Junior High School. They Do Even Understand The Reference Symbols Tolerances.

These Days, The Regular Army Can't Beat The Wild Ones. Huiwen Zhizao Is A Machining Factory With More Than Ten Years Of CNC Machining Experience. It Has A Full Range Of Equipment, CNC Lathe/Milling/Grinding/Drilling/Machining. Partners With Parts Processing Needs Are Welcome To Call Us For Quotes.

I Agree. Several Companies I Have Worked For Have Had This Problem. Now It Is A Standard Issue To Communicate The Drawings With The Processing Master When Entering The Company.

Our Company Is Even Worse Than Yours. The People In The Workshop Don’t Care What Your Markings Mean. They Often Finish The Work, Then You Find Their Mistakes, Then They Just Say They Don’t Understand The Drawings. . .

I Used To Be Forced To Mark Tolerances With Positive On The Bottom Negative On The Top.

The Original Poster Said That Many People Will Have This Situation. Communicate More With The Workshop. The Drawings Are For Processing Convenience, Just For Reading.

It Still Depends On The Specific Situation. What You Can Understand May Be Understood By Others. The Drawings Are For Others To See. Just Communicate More. Of Course, It Is Better To Use The Standard Ones.

You See! This Is What The Boss Is Like...

This Has Something To Do With The Professional Quality Of The Workers The Company's Environment. The Original Poster Doesn't Need To Mind It. You Should Sing Your Own Song On The Hill. While Adhering To Your Own Professional Quality, You Should Also Understand How To Simplify. A Boss Who Is Eager For Quick Success Instant Benefits Will Give You Extra Money Just Because You Draw A Good Picture. He Looks At The Output. If You Want To Be Praised, Just Combine The Actual Situation Of The Workshop, Understand The Real Needs Of The Workers, The Highlights Of Your Drawing Are What The Workers Are Anxious About. You Will Definitely Be Praised Next Time. Our Factory Is Also Quite Messy. There Is No Assembly Drawing In A Set Of Tooling Drawings, The Markings Are Standardized. When I First Came Here, I Marked Everything According To My Original Drawing Habits. Later, I Found That Some Were Useful Some Were Useless. I Felt The Same As The Original Poster. Later, I Found That The On-Site Response To The Assembly Drawing Was Good, Because You Marked All The Accessories For Him, How To Match Them Was Clear. If The Processed Parts Are Suitable, He Will Repair Them With You. Now They Require Assembly Drawings, So Assembly Drawings Must Be Drawn In The Future. The So-Called Practice Is The Only Criterion For Testing Truth.

On-Site Drawings Are Mainly Practical, Specifications Are Very Important. I Have Encountered This Before. No Matter How Good Your Annotations Are, It Is Useless If The Workers Can't Understand Them. You Have To Take Into Account The Quality Of Front-Line Workers. Generally Speaking, Most Of Them Are Migrant Workers, They Need More Process Drawings. So It Is Recommended That You Produce More Than Two Drawings: One Standard Drawing For Archiving, The Other For The Boss Workers To Understand According To The Situation. It's Nothing More Than Removing Some Annotations Wasting A Few More Sheets Of Paper.

The Tolerances Of Our Factory Markings Are Extremely Strict. Even Poor Quality Equipment May Mark 3 4 H7s On The Same Product.

Drawings Are For People To See. If Others Can't Understand Them, What's The Point Of Standardizing Them? Huiwen Has Long Been Committed To The Processing Of High-Precision, Difficult, Easily Deformed Metal Plastic Parts , Small Medium-Volume Production Of Lightweight Alloy Composite Material Parts (Such As Aluminum Alloy, Carbon Fiber, Etc.),  Procurement Customization Of Robot Parts .

It Is Better To Follow The Local Customs. If You Can Be Sure That You Are Drawing According To The Specifications, You Should Stick To It Make It A Habit. This Is A Personal Quality. If Your Drawings Are Fine, But The Parts You Make Have Problems, It Is The Responsibility Of The Processing. If You Do Mark The Tolerances, There Are Problems With The Processed Parts, It Is Your Responsibility. It Is A Simple Truth.

I Once Drew A Sheet Metal Drawing Of A Stainless Steel Box Sent It To A Processing Shop. The Guy In The Processing Shop Said He Couldn't Understand The Length, Width Height. I Went Over Pointed Out To Him That The Length, Width Height Were Clearly Marked On The Drawing, But He Still Said He Couldn't Understand. After Communicating For A Long Time, I Realized That He Could Only Read Three-Dimensional Drawings. In The End, He Drew A Three-Dimensional Sketch I Told Him The Length, Width Height, He Marked Them Himself, That Was It. It Was Really Depressing.

It's Like This In Small Companies. The Boss Will Mark It In Whatever Way He Thinks Is Good. But I Think If It's Too Uncommon, You Should Accept It. After All, We Are Trying To Standardize It. A Good Drawing Is One That Everyone Can Understand. Just Be Clear About The Rules.

Postscript: Drawings Must Be Standardized, Complete, Concise Clear. This Is The Bottom Line For Design Engineers. There Is No Room For Bargaining. There Is No Saying Of "When In Rome, Do As The Romans Do". It Is Also A Reflection Of The Basic Skills Of Engineers. But It Does Mean That The More Geometric Tolerances Are Marked, The Better, The Higher The Accuracy Is Marked, The Better. It Should Be Based On The Actual Needs Of The Design. The Simpler The Better, The Better, While Meeting The Requirements Of Clear Complete Expression. The Accuracy Requirements Must Meet The Principle Of Economy. You Are Welcome To Express Your Views In The Message Area.


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