Product Detail :

COFA and MicroCOFA

COFA and MICROCOFA
Deburring Tool for Elliptical or Contoured Surfaces
Stock Standard Tools 2mm - 41mm (.080" - 1.614")

• Forward and backward deburring in one pass
• Consistent deburring on even and uneven surfaces
• Easy operation
• TiN coated carbide inserts
• Simple design for minimal stock



	Deburr Elliptical Holes The COFA tool will deburr the contours of an elliptical hole when two holes intersect or a hole is not perpendicular to the surface. The COFA with a standard blade can be used when the large intersecting hole is two or more times the smaller or for surfaces up to 15°. Deburr more extreme contours by using the 30° blade with extra clearance relief.

	Radiused Edge breaks on Flat Parts Deburr the front and back of any through hole with a smooth tapered edge break to relieve stress points and sharp corners. Use the new blade with 10° clearance relief for better tool life when deburring flat parts.

How Does the COFA Tool Work? As the rotating tool is fed into the hole, the front cutting edge deburrs the top of the hole and the blade rocks upward. The result is a tapered, radiused edge break. When the blade is in the hole, only the ground and polished non-cutting ball touches the surface protecting it from damage while the tool is fed through the part. There is no need to stop or reverse the spindle. When the blade reaches the bottom of the part, it springs back into cutting position and the back cutting edge deburrs the bottom of the hole as the tool is withdrawn. When the blade is inside the hole, the tool can be rapid fed out and on to the next hole.

SNAP and MicroSNAP

SNAP and MICROSNAP
Economic front and back chamfering in One Operation, with very easy blade changes.
Stock Standard Tools 2mm -25mm (.080" - .984")

• Production front and back deburring and chamfering.
• Easy to handle and operate
• No Presetting
• Quick and easy blade changes
• Longer tool life (carbide-TiN)



	High Quality Consistent Chamfers: The SNAP blades are ground with a patented geometry developed by Heule to produce quality chamfers and eliminate secondary burrs. Different chamfer sizes can be achieved by selecting a different blade. There is no need for adjustments or operator intervention.

How Does the SNAP Tool Work? As the rotating tool is fed into the hole, the front cutting edge deburrs the top of the hole by cutting a 45° chamfer. As the tool feeds into the part, the blade is forced into the body, and slides in the blade window. When the blade is in the hole, only the ground gliding surface touches the hole, protecting it from damage while the tool is fed through the part. There is no need to stop or reverse the spindle. When the blade reaches the back of the part the coiled spring acts with the control bolt to push it back out into cutting position. The back edge is deburred and chamfered as the tool is withdrawn. When the blade is again in the hole, the tool can be rapid fed out and on to the next hold.

COFA in Cast Iron:

HTC, Deburring, gh-k, countersinks, countersink, COFA, SNAP, MICROSNAP, MICROCOFA, solo, BSF, BACK SPOTFACING, BACK SPOTFACER, gh-z, gh-e, snap, defa, micro snap, cincinnati tooling, chamfer, edge break, bore edge, one operation, burr, countersink, p

This cast iron valve body is being deburred with the COFA deburring tool. The manufacturer is running the tool at 1400 rpm with a feed rate of 0.010ipr. The reported insert life is 17,000+ parts

COFA in Steel

This steel clevice is being deburred with the COFA deburring tool. The manufacturer is running the tool at 180SFM and 0.010ipr. Blade life is approximately 3,000-4,000 holes.

COFA and MicroCOFA



	Deburr Elliptical Holes The COFA tool will deburr the contours of an elliptical hole when two holes intersect or a hole is not perpendicular to the surface. The COFA with a standard blade can be used when the large intersecting hole is two or more times the smaller or for surfaces up to 15°. Deburr more extreme contours by using the 30° blade with extra clearance relief.

	Radiused Edge breaks on Flat Parts Deburr the front and back of any through hole with a smooth tapered edge break to relieve stress points and sharp corners. Use the new blade with 10° clearance relief for better tool life when deburring flat parts.

How Does the COFA Tool Work? As the rotating tool is fed into the hole, the front cutting edge deburrs the top of the hole and the blade rocks upward. The result is a tapered, radiused edge break. When the blade is in the hole, only the ground and polished non-cutting ball touches the surface protecting it from damage while the tool is fed through the part. There is no need to stop or reverse the spindle. When the blade reaches the bottom of the part, it springs back into cutting position and the back cutting edge deburrs the bottom of the hole as the tool is withdrawn. When the blade is inside the hole, the tool can be rapid fed out and on to the next hole.

SNAP and MicroSNAP

SNAP and MICROSNAP
Economic front and back chamfering in One Operation, with very easy blade changes.
Stock Standard Tools 2mm -25mm (.080" - .984")

• Production front and back deburring and chamfering.
• Easy to handle and operate
• No Presetting
• Quick and easy blade changes
• Longer tool life (carbide-TiN)



	High Quality Consistent Chamfers: The SNAP blades are ground with a patented geometry developed by Heule to produce quality chamfers and eliminate secondary burrs. Different chamfer sizes can be achieved by selecting a different blade. There is no need for adjustments or operator intervention.

How Does the SNAP Tool Work? As the rotating tool is fed into the hole, the front cutting edge deburrs the top of the hole by cutting a 45° chamfer. As the tool feeds into the part, the blade is forced into the body, and slides in the blade window. When the blade is in the hole, only the ground gliding surface touches the hole, protecting it from damage while the tool is fed through the part. There is no need to stop or reverse the spindle. When the blade reaches the back of the part the coiled spring acts with the control bolt to push it back out into cutting position. The back edge is deburred and chamfered as the tool is withdrawn. When the blade is again in the hole, the tool can be rapid fed out and on to the next hold.

COFA in Cast Iron:

This cast iron valve body is being deburred with the COFA deburring tool. The manufacturer is running the tool at 1400 rpm with a feed rate of 0.010ipr. The reported insert life is 17,000+ parts

COFA in Steel

This steel clevice is being deburred with the COFA deburring tool. The manufacturer is running the tool at 180SFM and 0.010ipr. Blade life is approximately 3,000-4,000 holes.

COFA and MicroCOFA



	Deburr Elliptical Holes The COFA tool will deburr the contours of an elliptical hole when two holes intersect or a hole is not perpendicular to the surface. The COFA with a standard blade can be used when the large intersecting hole is two or more times the smaller or for surfaces up to 15°. Deburr more extreme contours by using the 30° blade with extra clearance relief.

	Radiused Edge breaks on Flat Parts Deburr the front and back of any through hole with a smooth tapered edge break to relieve stress points and sharp corners. Use the new blade with 10° clearance relief for better tool life when deburring flat parts.

How Does the COFA Tool Work? As the rotating tool is fed into the hole, the front cutting edge deburrs the top of the hole and the blade rocks upward. The result is a tapered, radiused edge break. When the blade is in the hole, only the ground and polished non-cutting ball touches the surface protecting it from damage while the tool is fed through the part. There is no need to stop or reverse the spindle. When the blade reaches the bottom of the part, it springs back into cutting position and the back cutting edge deburrs the bottom of the hole as the tool is withdrawn. When the blade is inside the hole, the tool can be rapid fed out and on to the next hole.

SNAP and MicroSNAP

SNAP and MICROSNAP
Economic front and back chamfering in One Operation, with very easy blade changes.
Stock Standard Tools 2mm -25mm (.080" - .984")

• Production front and back deburring and chamfering.
• Easy to handle and operate
• No Presetting
• Quick and easy blade changes
• Longer tool life (carbide-TiN)



	High Quality Consistent Chamfers: The SNAP blades are ground with a patented geometry developed by Heule to produce quality chamfers and eliminate secondary burrs. Different chamfer sizes can be achieved by selecting a different blade. There is no need for adjustments or operator intervention.

How Does the SNAP Tool Work? As the rotating tool is fed into the hole, the front cutting edge deburrs the top of the hole by cutting a 45° chamfer. As the tool feeds into the part, the blade is forced into the body, and slides in the blade window. When the blade is in the hole, only the ground gliding surface touches the hole, protecting it from damage while the tool is fed through the part. There is no need to stop or reverse the spindle. When the blade reaches the back of the part the coiled spring acts with the control bolt to push it back out into cutting position. The back edge is deburred and chamfered as the tool is withdrawn. When the blade is again in the hole, the tool can be rapid fed out and on to the next hold.

COFA in Cast Iron:

This cast iron valve body is being deburred with the COFA deburring tool. The manufacturer is running the tool at 1400 rpm with a feed rate of 0.010ipr. The reported insert life is 17,000+ parts

COFA in Steel

This steel clevice is being deburred with the COFA deburring tool. The manufacturer is running the tool at 180SFM and 0.010ipr. Blade life is approximately 3,000-4,000 holes.

Cassette tool from HEULE - process capable deburring of large bore-Ø

Automotive Industry / Connecting Rod

Reduce cycle times

HEULE has been reducing cycle times in the automotive industry successfully for over 30 years now. Today, car manufacturers ask for simple and process capable tool system. Terms like "time saving activities", "labor costs saving“ and "CIP continuous improvement process“ are common practice in the automotive industry

Customer application

Our customer has been machining the connecting rods manually for years.

Bore	Ø62.5 mm
Deburring size	Ø63.5 mm
Unevenness	20°
Material	Forged steel

Proposed solution by HEULE Werkzeug AG

The HEULE proposal stipulates a cassette solution with the COFA tool. The standard COFA cassette can be adapted easily to large bore diameters by using a customized tool holder. This method gives the freedom to use the standard cassette also for other deburring applications.

The burrs will be removed at the front and at the back without any problems. Due to the unevenness of the bore edge, the radial deburring will be slightly irregular.

Benefits of the solution

The connecting rod is clamped on a undefined surface. As a result, the deburring surface is also undefined which is asking necessarily for a spring-guided deburring system that compensates for the variance.

The COFA blade does not hurt the already finished bore surface when traversing the hole. It is recommendable to apply low cutting values in order to allow the COFA blade to adapt to the contour.

Workpiece

Connecting rod / Main bore

COFA cassette tool

Tool body; Cassette holder with COFA12 cassette

Blade; standard blade COFA12

Cutting data

Working speed	300 rpm
Working feed	0.15 mm/rev.
Coolant	External cooling

E-Catalog > HEULE PRECISION TOOLS > HEULE Deburring Tools

Product Information :

Product Detail :

COFA and MicroCOFA

SNAP and MicroSNAP

COFA in Cast Iron:

COFA in Steel

COFA and MicroCOFA

SNAP and MicroSNAP

COFA in Cast Iron:

COFA in Steel

COFA and MicroCOFA

SNAP and MicroSNAP

COFA in Cast Iron:

COFA in Steel

Cassette tool from HEULE - process capable deburring of large bore-Ø

Reduce cycle times

Customer application

Proposed solution by HEULE Werkzeug AG

Benefits of the solution

Workpiece

COFA cassette tool

Cutting data

Other Product In Group "HEULE PRECISION TOOLS (4)"

เมนู

หมวดหมู่สินค้า

เจ้าหน้าที่

Contact Us