Ideal for the AUTOMATION of cross-hole deburring and bottom surface finishing of dead-end holes.

Added Long Shaft (Full length 170mm)

 交差穴バリ取りツール　セラミック砥石タイプ　製品写真

Features
  • Powerful tip grinding with “XEBEC Cutting Fibesr” in rods made of Alumina Fiber abrasive stone.
  • Centrifugal force spreads out the rods and efficiently removes cross-hole fine burrs in cylinders.
  • Precision removal of all fine burrs where the base thickness is 0.1 mm or less after machining.
  • Can also be used for polishing or scale removal on inner wall surfaces of cylinders.         
■Deburring of cross-hole burrs generated in ø4mm drill processing
Processing method：Processing from both sides of the primary processing hole.

| Material：S45C | Applied Tool : CH-A12-5M｜Tool rpm : 10,000rpm | Bore diameter in primary processing : ø10mm | Bore diameter in secondary processing : ø4mm | feed rate : 5mm/sec
 
 
Material and Structure
■Material

One Alumina Fiber Rod is made by binding together 1,000 Alumina Fiber Filaments which have the ideal crystal structure for grinding, each is only 10μm in diameter. The tip has 1,000 high-density cutting edges.

The self-sharpening action of the cutting edge on the Fine Alumina Fiber Rod tips provides superior grinding performance. Continuous cutting edges provide stable and continuous grinding performance.

 

 

■Structure

[the technology of "XEBEC Cutting Fiber"]

 
 
 
Usage, Applications
■Usage
  • Removal of fine burrs (base thickness is 0.1mm or less) generated around cross-holes.
  • Polishing of inner wall surfaces of cylinders such as screw holes, and removing EDM scale.
  • Polishing the bottom surface of dead-end holes.

 


■Applications

Workpiece name Usage Contents
Injector body Bottom surface finishing Bottom cross-hole deburring（slanted hole）
Injector nozzle parts Bottom surface finishing Deburring bottom surface after drilling
Engine nozzle Cross-hole deburring Inner wall surface finishing and cross-hole deburring
Fuel injector parts Bottom surface finishing Deburring inner wall surface of tapered hole
Engine pump parts Inner wall surface deburring Inner wall surface deburring after end milling
Camshaft Cross-hole deburring Cross-hole deburring after drilling
Shaft （for transmission） Cross-hole deburring Cross-hole deburring by combined with another deburring tool after drilling.
Crankshaft Cross-hole deburring Deburring oil hole after drilling (slanted hole)
Rail Cross-hole deburring Deburring and inner wall finishing after drilling of ø0.8mm（eccentric hole）
SCV housing Bottom surface finishing Deburring bottom surface of dead end hole after end milling
 
 
Comparison
  • Around 6 times the deburring efficiency of diamond abrasive-impregnated nylon brushes, and twice that of Product F.
  • Over 7 times longer life than diamond abrasive-impregnated nylon brushes and over 3 times longer than with Product F.
  • No damage to the inside of the cylinder unlike Product F.
  • Wide application range (ø5～20mm with 3 sizes)
  • More consistently stable deburring performance compared to nylon or a wire brushes because the rods shape stays intact.
■ There is virtually no fiber rod configurational change unlike abrasives-impregnated nylon or wire brushes. Deburring performance remains stable in both wet and dry processing.
Comparison of bend recovery, heat resistance, rod tensile elasicity rate with water immersion

 


　From left to right ： Brass wire, steel wire, abrasives-impregnated nylon brush, XEBEC Fiber Rod 　
XEBEC Fiber Rod nylon brush Brass wire
Bend Recovery 100% 88% 82%
Heat resistance 150 90 -
Rod tensile elasity rate with water immersion (25 hours immersion) 100% 50% -
　
　
 
Use
  1. Choose the proper tool size according to the target bore diameter in primary processing.(Refer to below (1).)
  2. Set the tool RPM to the most effective for the deburring process between 8000～12000rpm.
  3. Follow steps 1～4 below.
*First insert the tip of the tool into the cylinder, and then switch “ON”.

[Step1] Insert the tool into the hole before switching "ON".
[Step2] Start rotation just before reaching the cross-hole.
[Step3] Work the brush back and forth within the workpiece.
[Step4] Stop tool rotation before withdrawing the tool from the hole.

*For effective deburring, repeat steps 1 to 4 from the opposite side of the workpiece.
<Remark (1)> Brush Diameter and Target Bore Diameter Chart
Target Bore Diameter In Primary Processing Brush Diameter Product Code
ø5~ø8mm ø3mm CH-A12-3M
CH-A12-3L
ø8~ø10mm ø5mm CH-A12-5M
CH-A12-5L
ø10~ø20mm ø7mm CH-A12-7M
CH-A12-7L


 
 
■Standard rpm for processing
* The RPM above are the required minimum RPM for processing.
As deburring performance depends on the burr size and workpiece material, RPM greater than indicated above may be required for processing.