Fine Blanking

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FINE BLANKING •Submitted By Vilas T. Gadhave Suyash L. Khairnar (MET`S Institute Of Technology ,Nashik )

description

Fine Blanking Process explained in a ppt.

Transcript of Fine Blanking

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FINE

BLANKING

•Submitted ByVilas T. Gadhave

Suyash L. Khairnar(MET`S Institute Of Technology ,Nashik)

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INTRODUCTION

• What is Fine blanking• Features

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WHAT IS BLANKING

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EVOLUTION IN BLANKING PROCESS : FINE BLANKING

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DIFFRENCE BETWEEN BLANKING & FINE

BLANKING

• Depending upon clearance between die & punch

• Depending upon the deformation (shearing) of metals

• Depending upon the forces applied

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DIFFRENCE BETWEEN BLANKING & FINE

BLANKING

Conventional Blanking 1.Punch

2.Sheet Metal 3.Die

Fine Blanking 1. Punch

2. Work Piece

3. Die 4. V-Ring 5. Ejector

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DIFFRENCE BETWEEN BLANKING & FINE

BLANKING

  

Surface produced by conventional method (top)

Smooth surface produced by FB(bottom)

Surface produced by conventional method (left)

Smooth surface produced by FB(right)

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STEPS INVOLVED IN FINE

BLANKING

1. Tool in open condition along with the strip ready to cut

2. Bottom moves up & tools closed. Ring groove (Fr) and counter (Fg) forces are activated

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STEPS INVOLVED IN FINE

BLANKING

3. Blanking force (Fs) activated &material being out to produced part. Ring

groove & counter force

still remains active

4. Bottom moves down & tool is in open condition

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STEPS INVOLVED IN FINE

BLANKING

5. Ejected force (Fe) activated. Strip & slug ejected

6. Part ejected

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PARAMETERS INVOLVED IN FINE BLANKING

1. Forces2. Fine blanking accuracy3. Fine blanked edge quality4. Gear teeth

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1. FORCES

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2. FINE BLANKING ACCURACY

The accuracy that can be achieved in fine blanked parts is largely dependent upon

1. The accuracy of tools & there quality of maintenance

2. The quality of raw materials 3. The thickness of materials 4. The complexity of component’s shape

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3. FINE BLANKED EDGE QUALITY

• One of the great advantages of Fine blanking is its ability to produce a straight, clean edge. The final quality of the edge surface is influenced by many factors, the main ones being:

• Quality of the Tooling

• Quality of the Raw Material

• Type of Raw Material

• Cutting Lubricant

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4. GEAR TEETH

• Fine blanking is the only metal stamping process that can produce a gear in single operation.blanking is the only metal

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FINE BLANKING PRODUCTION LINE

The fine blanking is the heart of automatic fine blanking production line,which usually consists of the above components

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EQUIPMENTS USED

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FINE BLANKING PRESSES

400 Tones FB Press 160 Tones FB Press

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ADVANTAGES & DISADVANTAGES

• Compared with conventional stamping

• Compared with machining

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APLICATIONS

Vehicles Textile industry Locks & keysOptical instrument

Agricultural instruments Air planes

General Machines

ElectricalsHousehold ComponentsWeaponsOptical instruments

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APPLICATIONS

•Blanking is used to produce both internal & external gear forms•This eliminates hobbing & grinding

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CONCLUSION

• From the graph we conclude that in conventional process the cost goes on increasing as the quantity is increased. While in fine blanking cost reduces progressively.

• Hence fine blanking process is more useful in mass production industries

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THANK YOU