Introduction To Commonly Used Measuring Tools In Precision Machining Plants, Save It!

1. Lever Micrometer For Precision Machining Plant

1. The Lever Micrometer In A Precision Machining Plant Is Also Called An Indicating Micrometer. It Is A Precision Measuring Tool Composed Of The Differential Cylinder Part Of An Outside Micrometer The Indicating Mechanism In A Lever Caliper.

2. The Indication Value Of The Lever Micrometer Is 0.002mm The Indication Range Is ±0.06mm.

R1=2.54mm, R2=12.195mm, R3=3.195mm, Pointer Length R=18.5mm, Z1=312, Z2=12, Then The Transmission Magnification Ratio K Is:

That Is, When The Movable Anvil Moves 0.002mm, The Pointer Moves One Grid.

The Reading Value B Is: B≈0.002 K = 0.002×723mm = 1.446mm

The Lever Micrometer Can Be Used For Relative Measurement Absolute Measurement Like A Micrometer. Its Graduation Values Are 0.001mm 0.002mm.

The Lever Micrometer Of The Precision Machining Plant  Only Has A High Reading Accuracy, But Also Because The Bow Frame Has A Large Rigidity The Measuring Force Is Generated By A Small Spring, It Is More Stable Than The Measuring Force Generated By The Ratchet Device Of The Ordinary Micrometer. Therefore, Its Actual Measurement Accuracy Is Also Higher.

3. Precautions For Use

Before Making Relative Measurements With A Lever Caliper Lever Micrometer, The Zero Position Should Be Adjusted With A Gauge Block According To The Size Of The Workpiece Being Measured.

When Measuring, Press The Back-Off Button To Allow The Measuring Rod Surface To Lightly Contact The Workpiece. Do Force It To Avoid Wear On The Measuring Surface Affect Accuracy.

When Measuring The Diameter Of A Workpiece, The Measuring Tool Should Be Swung The Reading At The Turning Point Of The Pointer Should Be The Correct Measurement Value.

2. Internal Diameter Micrometer Of Precision Machining Plant

The Reading Method Of The Inside Diameter Vernier Caliper In A Precision Machining Plant Is The Same As That Of The Outside Diameter Vernier Caliper.

Internal Diameter Micrometer Is Mainly Used To Measure Large Apertures. To Adapt To The Measurement Of Different Aperture Sizes, An Extension Rod Can Be Connected. When Connecting, Just Unscrew The Protective Cap 5 Screw The Right End Of The Extension Rod (With Internal Thread) On The Left End Of The Micrometer. The Extension Rods Can Be Connected One By One, The Maximum Measurement Range Can Reach 5000mm.

Internal Diameter Vernier Caliper Extension Rod Are Supplied As A Set. At Present, The Measuring Range Of Domestic Internal Diameter Vernier Caliper (Mm): 50-250; 50-600; 100-1225; 100-1500; 100-5000; 150-1250; 150-1400; 150-2000; 150-3000; 150-4000; 150-5000; 250-2000; 250-4000; 250-5000; 1000-3000; 1000-4000; 1000-5000; 2500-5000. Reading Value (Mm): 0.01.

Huiwen Intelligent Manufacturing Is A Machining Factory With More Than Ten Years Of CNC Machining Experience. It Has A Full Range Of Equipment, Including CNC Turning/Milling/Grinding/Drilling/Machining.Partners With Parts Processing Needs Are Welcome To Call Us For Quotes.

There Is No Force Measuring Device On The Inside Diameter Micrometer, The Measurement Of Pressure Depends Entirely On The Feeling Of The Hand.

When Measuring, Adjust It To The Size To Be Measured, Then Gently Put It Into The Hole To Test Whether The Tightness Of Its Contact Is Appropriate. Keep One End Still, Swing The Other End Left, Right, Forward, Backward. When Swinging Left Right, You Must Carefully Place It In The Diameter Direction Of The Hole To Be Measured, With Point Contact, That Is, The Maximum Size Of The Hole Diameter (The Maximum Reading), To Prevent The Wrong Position.

The Forward Backward Swing Should Be At The Minimum Size Of The Measuring Hole (I.E. The Minimum Reading). Only By Gently Contacting The Hole Wall According To These Two Requirements Can The Correct Value Of The Diameter Be Read. When Measuring, It Is Wrong To Force The Internal Diameter Micrometer To Pass The Hole. Doing So Will Only Cause Premature Wear Of The Measuring Surface, But Also Damage The Accuracy Of The Measuring Tool Make The Measurement Result Inaccurate Due To The Bending Deformation Of The Slender Measuring Rod.

The Indication Error Of The Inside Diameter Vernier Caliper Is Relatively Large. For Example, When Measuring The Inside Diameter Vernier Caliper Of 0 To 600 Mm, The Indication Error Is ±0.01 To 0.02 Mm.

Therefore, When Measuring The Inside Diameter With Higher Accuracy, The Inside Diameter Vernier Caliper Should Be Adjusted To The Measuring Size Then Placed On An Equal Size Composed Of Gauge Blocks For Calibration, The Tightness When Measuring The Inside Size Should Be Compared With The Tightness When Measuring The Gauge Block Group Size To Overcome The Disadvantage Of Large Indication Error.

In Addition To Measuring The Inner Diameter, The Inside Diameter Vernier Caliper Can Also Be Used To Measure The Internal Dimensions Such As The Groove Width The Distance Between The Two Inner End Faces Of The Machine Body. However, Dimensions Below 50 Mm Cannot Be Measured Require An Internal Measuring Vernier Caliper.

3. Internal Measurement Micrometer In Precision Machining Plants

The Internal Measuring Vernier Ruler Of Precision Machinery Processing Plant Is Used To Measure The Width Of Small-Sized Inner Diameter Inner Side Groove. Its Characteristics Are Easy To Find The Inner Hole Diameter Convenient Measurement. The Reading Value Of The Domestic Internal Measuring Vernier Ruler Is 0.01mm, The Measuring Range Is 5-30 25-50mm, 5-30mm Internal Measuring Vernier Ruler. The Reading Method Of The Internal Measuring Vernier Ruler Is The Same As That Of The External Diameter Vernier Ruler, Except That The Scale Size On The Sleeve Is Opposite To That Of The External Diameter Vernier Ruler, Its Measuring Direction Reading Direction Are Also Opposite To Those Of The External Diameter Vernier Ruler.

4. Three-Jaw Internal Micrometer In Precision Machining Plants

Three-Jaw Internal Micrometer Is Suitable For Measuring Small Medium Diameter Precision Internal Holes, Especially For Measuring The Diameter Of Deep Holes. Measuring Range (Mm): 6-8, 8-10, 10-12, 11-14, 14-17, 17-20, 20-25, 25-30, 30-35, 35-40, 40-50, 50-60, 60-70, 70-80, 80-90, 90-100. The Zero Position Of The Three-Jaw Internal Micrometer Must Be Calibrated In The Standard Hole.

The Working Principle Of The Three-Jaw Internal Micrometer Is That The Three-Jaw Internal Micrometer With A Measuring Range Of 11 To 14 Mm, When The Force Measuring Device 6 Is Rotated Clockwise, The Micrometer Screw 3 Is Driven To Rotate Move Along The Spiral Line Direction Of The Threaded Sleeve 4, So That The Square Conical Thread At The End Of The Micrometer Screw Pushes The Three Measuring Claws 1 To Move Radially. The Elastic Force Of The Torsion Spring 2 Makes The Measuring Claws Fit Tightly On The Square Conical Thread, Expand Contract With The Advance Retreat Of The Micrometer Screw.

The Radial Pitch Of The Square Conical Thread Of The Three-Jaw Internal Micrometer Is 0.25mm. That Is, When The Force Measuring Device Rotates Clockwise For One Circle, The Measuring Claw 1 Moves Outward (Radial Direction) 0.25mm, The Diameter Of The Circle Formed By The Three Measuring Claws Increases By 0.5mm. That Is, When The Differential Cylinder Rotates For One Circle, The Measuring Diameter Increases By 0.5mm, There Are 100 Equally Divided Grids Engraved On The Circumference Of The Differential Cylinder, So Its Reading Value Is 0.5mm÷100=0.005mm.

5. Normal Length Micrometer For Precision Machining Plants

Normal Length Micrometer. It Is Mainly Used To Measure The Normal Lengths Of Two Different Tooth Surfaces Of External Meshing Cylindrical Gears. It Can Also Be Used To Check The Original Dimensions Of The Gear Being Cut According To The Normal Line When Checking The Accuracy Of The Gear Cutting Machine. Its Structure Is The Same As That Of The Outside Diameter Micrometer, Except That Two Measuring Pliers With Precise Planes (Measuring Surfaces) Are Installed On The Measuring Surface To Replace The Original Anvil Surface.

Measuring Range (Mm): 0-25, 25-50, 50-75, 75-100, 100-125, 125-150. Reading Value (Mm): 0.01. Measuring Modulus M (Mm): ≥1.

6. Wall Thickness Micrometer

Wall Thickness Micrometer. Mainly Used To Measure The Wall Thickness Of Precision Tubular Parts. The Measuring Surface Of The Wall Thickness Micrometer Is Inlaid With Hard Alloy To Increase The Service Life.

Measuring Range (Mm): 0-10, 0-15, 0-25, 25-50, 50-75, 75-100. Reading Value (Mm): 0.01.

7. Plate Thickness Micrometer

Plate Thickness Micrometer. Mainly Used To Measure The Thickness Of Plate Materials. Its Specifications Are Shown In Table 1.

8. Pointed Micrometer

Pointed Micrometer Is Mainly Used To Measure The Thickness, Length, Diameter Small Grooves Of Parts, Such As The Groove Diameter Of Drill Bits Even-Groove Taps.

Measuring Range (Mm): 0～25, 25～50, 50～75, 75～100. Reading Value (Mm): 0.01.

9. Thread Micrometer

Thread Micrometer. Mainly Used To Measure The Median Diameter Of Common Threads.

The Structure Of The Thread Micrometer Is Similar To That Of The Outside Diameter Micrometer, The Difference Is That It Has Two Special Interchangeable Measuring Heads 1 2, Whose Angles Are The Same As The Thread Profile Angle.

The Measuring Range The Measuring Pitch Range Are Shown In Table 2.

10. Depth Micrometer

Depth Vernier Gauge Is Used To Measure Hole Depth, Groove Depth Step Height, Etc. Its Structure Is No Different That Of The Outside Diameter Vernier Gauge, Except That The Base Is Used Instead Of The Ruler Frame The Measuring Anvil.

The Reading Range Of The Depth Vernier Caliper (Mm): 0~25, 25~100, 100~150, The Reading Value (Mm) Is 0.01.

Its Measuring Rod 6 Is Made Replaceable, After Replacement, It Is Locked With The Locking Device 4. Huiwen Zhizao Is A Machining Factory With More Than Ten Years Of CNC Machining Experience, With Complete Equipment, CNC Lathe/Milling/Grinding/Drilling/Machining. Partners With Parts Processing Needs Are Welcome To Call Us For Quotation.

The Zero Position Of The Depth Micrometer Can Be Calibrated On A Precision Plane. That Is, When The End Face Of The Base The End Face Of The Measuring Rod Are In The Same Plane, The Zero Line Of The Differential Cylinder Is Exactly Aligned. When The Measuring Rod Is Replaced, The Zero Position Generally Does Change.

When Using A Depth Micrometer To Measure The Hole Depth, The Measuring Surface Of The Base 5 Should Be Placed Close To The End Face Of The Hole Being Measured. This End Face Of The Part Should Be Perpendicular To The Center Line Of The Hole Should Be Smooth Flat, So That The Measuring Rod Of The Depth Micrometer Is Parallel To The Center Line Of The Hole Being Measured To Ensure Measurement Accuracy. At This Time, The Distance The End Face Of The Measuring Rod To The End Face Of The Base Is The Depth Of The Hole.

11. Digital Outside Micrometer

Recently, My Country Has A Digital Outside Diameter Micrometer, Which Uses Numbers To Indicate Readings Is More Convenient To Use. There Is Also A Vernier Engraved On The Fixed Sleeve, Which Can Read 0.002 0.001mm Readings.

The Shenzhen Huiwen Intelligent Manufacturing Technology Co., Ltd. Team Was Established In 2010 Is Located On The 1st Floor Of Building F3, Tianyou Maker Industrial Park, Lixinhu, Fuyong, Bao'an District, Shenzhen. It Has Long Been Committed To The Processing Of High-Precision, High-Difficulty, Easy-To-Deform Metal Plastic Parts , Small Medium-Batch Production Of Lightweight Alloy Composite Materials (Such As Aluminum Alloy, Carbon Fiber, Etc.) Parts,  Procurement Customization Of Robot Parts .