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Diamond Tool & Bore Sizing Systems

Reamers

Accu-Cut’s adjustable diamond reamers outperform carbide reamers for improved statistical capability, longer tool life, and lowest per-piece cost.
turbocharger push rod bore
turbocharger push rod bore

Turbocharger Push Rod Bore

CPU = 1.6¢ per unit

Objective:

Improve part geometry by replacing current carbide drill / reamer

Material: Gray Iron
Bore Size: 0.7880" +/- 0.00035"
20.015mm +/- 0.0089mm
Machine: Makino A70
Holder: CAT 40
Stock Removal: 0.020" / 0.508mm
Roundness: 0.0002" / 0.005mm
Straightness: 0.0002" / 0.005mm
Coolant: Water Soluble
Surface Finish: 63 Ra Max / 1.6mm Ra Max

Achievement:

Roundness: < 0.0001" / 0.0025mm
Straightness: < 0.0002" / 0.005mm
Surface Finish: < 28 Ra / 0.7mm Ra
Tool Life: > 70,000 - 2 bores
Cycle Time: < 24 seconds

Accu-Cut Diamond Microcutting process generated 17.67 Cpk on bore size!!


Click to enlarge

heavy duty differential case
heavy duty differential case

Heavy Duty Differential Case

CPU = 2.1¢ per unit

Objective:

Replace costly DiHart Carbide Reamer

Tool: Adjustable Diamond Reamer
Machine: Heller HMC
Material: Ductile Iron
Stock Removal: 0.015" / 0.38mm
Coolant: Water soluble
Holder: HSK-100A
Infeed: 0.025" / 0.635mm per rev

Achievement:

Reduced CPU by a minimum of 125%
Diamond tool life outperformed carbide 200/1
Cycle Time: < 20 seconds
Diesel Engine Crank Bore
Diesel Engine Crank Bore

Diesel Engine Crank Bore

CPU = $0.005 per unit

Objective:

Produce improved straightness and roundness over conventional honing and line boring.

Tool: Adjustable Diamond Reamer
Bore Size: 5.2500" / 13.335mm
Machine: Transfer Line
Material: Ductile Cap / Gray Iron Block
Stock Removal: 0.008" / 0.203mm
Coolant: Water soluble
Holder: Special Accu-Cut Floating Holder

Achievement:

Roundness: < 0.0002" / 0.005mm
Straightness: < 0.0003" / 0.008mm
Capability is 11% of tolerance

Accu-Cut's diamond microcutting process tightened production tolerance by over 800%.

v8 engine block reamer diamond tooling
v8 engine block reamer diamond tooling

V8 Cylinder Bore

CPU = 2.1¢ per unit

Objective: 

Material: Gray Iron Block with compacted graphite cylinder liner
Bore Size: 102.925mm +/- 0.025mm w/18mm relief
Machine: VMC
Stock Removal: 1.22mm/diameter
Passes: Rough, Finish
Roundness: < 0.050mm
Straightness: < 0.075mm
Coolant: Water Soluble, 1000 psi
Surface Finish: 40 Ra / 1.0mm Ra

Achievement:

Roundness: < 0.005mm
Straightness: < 0.005mm
Cycle Time: < 30 seconds
Reduced piston ring wear due to improved straightness
Reduced secondary honing cost by at least 75%
Capability is 18% of tolerance
differential case
differential case

Automotive Differential Case

CPU = $0.009 per unit

Objective:

Replace costly roller burnishing process and improve surface texture.

Material: Ductile Iron
Bore Size: 1.078" / 27.38mm
Machine: Fuji Milling Machine
Stock Removal: 0.002" / 0.05mm
Roundness: 0.0002" / 0.005mm
Straightness: 0.0003" / 0.008mm
Coolant: Water Soluble Synthetic
Surface Finish: < 20 Ra / 0.5mm Ra

Achievement:

Roundness: < 0.0001" / 0.0025mm
Straightness: < 0.0002" / 0.005mm
Surface Finish: 6 - 8 Ra / 0.15 - 0.2mm Ra
Cycle Time: < 16 seconds
Eliminated costly roller burnishing, reducing CPU by minimum of 250%.
Increased tool life by 150x
power frame
power frame

Power Frame

CPU = 2.8¢ per unit

Objective:

Use Accu-Cut diamond reamer to increase tool life over existing carbide inserts.

Bore: Blind Bore w/ 0.625" relief / 15.875mm
Material: Gray Iron
Bore Size: 5.127" / 130.23mm
Machine: HMC
Stock Removal: 0.010" / 0.25mm
Roundness: 0.0004" / 0.010mm
Straightness: 0.0005" / 0.013mm
Coolant: Water Soluble Synthetic
Surface Finish: 63 Ra Max / 1.6mm Ra Max

Achievement:

Roundness: < 0.0002" / 0.005mm
Straightness: < 0.0002" / 0.005mm
Surface Finish: < 20 Ra / 0.5mm Ra
Cycle Time: < 18 seconds​

Accu-Cut's diamond reamers improved tool life by a minimum of 300%, eliminating carbide inserts.

steering knuckle
steering knuckle

Steering Knuckle - Strut Bore

CPU = 1.8¢ per unit

Objective:

Size bore with 0.200" wide slot, top to bottom

Material: Ductile Iron
Bore Size: 2.130" / 54.10mm
Machine: VMC / HMC
Holder: HSK-100A
Stock Removal: 0.016" / .406mm
Roundness: 0.0005" / 0.013mm
Straightness: 0.0005" / 0.013mm
Coolant: Water Soluble
Surface Finish: 25 Rz

Achievement:

Roundness: < 0.0002" / 0.005mm
Straightness: < 0.0002" / 0.005mm
Surface Finish: < 10 Rz
Cycle Time: < 33 seconds

Accu-Cut Diamond Microcutting tooling overcame slot in bore improving roundness and straightness by > 50%.

Turbocharger Main Bearing Bore reamer
Turbocharger Main Bearing Bore reamer

Turbocharger Main Bearing Bore

CPU = $0.009 per unit

Objective:

Material: Gray Iron
Bore Size: 0.6252" / 15.88mm
Machine: Haas VMC
Holder: CAT 40
Stock Removal: 0.002" / 0.05mm
Roundness: 0.0001" / 0.0025mm
Straightness: 0.0002" / 0.005mm
Coolant: Semi Synthetic
Surface Finish: < 16 Ra / 0.4mm Ra

Achievement:

Roundness: < 0.0001" / 0.0025mm
Straightness: < 0.0001" / 0.0025mm
Surface Finish: < 8 Ra / 0.2mm Ra
Cycle Time: < 14 seconds​

Accu-Cut Diamond Microcutting process replaced carbide reamers on family of lower volume turbo chargers, reducing CPU by a minimum of 200%.

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CNC turnkey systems

CNC Turnkey Systems

Accu-Cut turnkey systems combine intelligent control, engineered tooling, and automation options to create stable, repeatable processes designed for high-volume manufacturing.

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