Don’t throw those used drilling inserts away. General Cutting Tools is a factory authorized resharpening center for your Ingersoll cutting tools. We will take your used inserts and recondition them back to factory specks using our 7-axis ANCA CNC tool cutter grinders.
Contact General Cutting Tools to learn more about how you can save money with Ingersoll’s Qwik Twist drilling system. We are an authorized Ingersoll dealer and can ship to Illinois, Indiana, Wisconsin, Michigan, Iowa and the rest of the US.
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Here are some tips and guides for using tools to dress and true your grinding wheels for success from Norton Abrasives and Tools Illinois aka General Cutting Tools. Before a grinding wheel even touches a workpiece, it must first be trued and dressed, usually by a stationary diamond dressing tool. If you do this task right, then you can be sure that the wheel and parts coming off the machine are probably ground right. It’s true: everything the tool does to the wheel, the wheel does to the part. That’s why you should always begin troubleshooting grinding operations with a quick review of the truing and dressing processes. After all, truing and dressing are where the grinding process really begins.
By definition, truing ensures that the wheel is properly formed and that its spin is concentric to the mounting spindle. Dressing ensures that the abrasive particles are sharp during production grinding.
Each time a wheel is taken off a grinding machine, it must be re-trued. After production begins, the wheel should be occasionally dressed to restore its grains’ sharpness.
The rumors are true. Sharp diamond tools create sharp wheels, and dull tools produce dull wheels. Sharp wheels (also called open wheels) can remove the maximum amount of workpiece material during grinding. In lay terms, grinding with a sharp wheel is often fast and easy. By contrast, dull wheels (also called closed wheels) remove less material, often making grinding slow and hard. In addition to cutting less, dull abrasives literally rub the part and create smoother or lower surface-finish readings on the workpiece(s).
Sharp, open wheels are generally the preferred wheel condition. They tend to produce higher surface-finish readings and may require some intentional dulling to lower finish readings.
Creating an open (sharp) wheel is easy: Either 1) use a new stationary dressing tool or 2) move a tool – new or old – fast across the grinding wheel. Closed wheels simply require the opposite: 1) Use a dull tool, or 2) move the tool slowly across the wheel.
To ensure that your tools last a long time, pay close attention to some key parameters when dressing conventional wheels:
Wheel removal per dress pass. On aluminum oxide wheels, we recommend removing 0.001 inches (on the wheel radius) per dress pass. Reduce this amount by 25 percent when dressing silicon carbide or seeded-gel (SG) wheels, and reduce it by 50 percent when dressing Norton® Altos® (self-dressing ceramic aluminum oxide) wheels.
- Taking off too much wheel per dress pass overheats the diamond and often causes chipping.
- Taking off too little per dress pass, the sound of the dress to get louder, the finish tends to drop, and size/taper issues become evident.
The speed at which the tool moves across the wheel. Run tools using a single diamond at one speed across the wheel, and those using multiple diamonds three times faster. Remember, the slower a tool moves across the wheel, the lower the part’s surface-finish readings will be:
- For single points, chisels and cone point tools – Traverse Rate (the speed the tool moves across the wheel) in inches per minute = 0.006 x grinding wheel RPM*.
- For blades, grit (nib) tools and clusters – Traverse Rate (the speed the tool moves across the wheel) in inches per minute = 0.018 x grinding wheel RPM*.
* To calculate wheel RPM, divide Wheel SFPM (surface feet per minute) by (0.2618 x wheel diameter).
Avoid power dressing. If you need to reduce new wheel truing times, use an old tool as a roughing tool and save new(er) tools for production.
Creating Wheel Conditions
Open (Sharp) Wheel
- Generally preferred wheel condition
- Creates maximum wheel material removal
- Typically requires a new dressing tool
- Move the tool faster across the wheel
- Typically produces high finish readings
Closed (Dull) Wheel
- Wheel conditioning you may need
- Minimum wheel material removal
- Typically requires a worn dressing tool
- Move the tool slower across the wheel
- Produces lower finish readings
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Kennametal’s HTS Indexable Drills are designed to drill holes 1 OxD and with inclexable inserts in steel, cast iron, ductile iron, stainless steel, and nonferrous materials. HTS Drills are capable of producing hole diameters up to 270 mm or 10.63″.
Features and Benefits
Modular in Design
- Cartridges in drilling head are adjustable for size range control.
- General-purpose and finishing cartridges available as standard to minimize operations.
- Extensions are standard for increased depth capability.
- Through coolant standard to aid in chip removal and increased insert life.
- Can be used in stationary or rotating applications for versatility.
Easy Insert Change
- Robust pocket design requires only a simple wrench for insert removal.
- Multiple grades and geometries available.
Tailored Grades and Geometries
- New KC7815 and KC7820 grades offer multi-layer CVD and KC 7140 with advanced PVD coatings for improved performance in steel.
- 5 DFT geometries standard for cutting performance and superior chip control.
- Grades and geometries can be tailored in each pocket for improved performance.
- HSS pilot drills are available to optimize productivity. Carbide pilot drills available on request.
- Wear pads can be added for increased stability.
- Fully engineered custom solutions available.
HTS deep hole drilling system expanded
With the introduction of Kennametal’s new HTS-DFR product, the drilling range of the HTS system has been extended down to a 1.575 (40mm) diameter. The range of the system is now 1.575 – 10.63 (40 – 270 mm).
- Five new heads with DFR inserts cover the range of 1.575 (40mm) to 2.165 (55mm)
- Up to 30% higher feed rates are possible with DFR inserts compared to trigon insert
- DFR heads use outer cartridges that may be ground to produce the desired cutting diameter
- Four standard grades on two insert geometries are available to optimize the productivity of your application
- Better chip control is now possible with the DFR insert geometry
- Basic shanks provide adequate chip space
- Inch and metric basic shanks are standard
- New extentions and reducers complete the system
- Solid carbide and HSS pilot drills are available to match the cutting conditions to your specific applications
Tags: ann harbor, boring bits, chicago, davenport, des moines, detroit, drill bits, drilling, drilling bits, gary, green bay, illinois, indexable, indiana, insert, insert shaper cutters, iowa, iowa city, Kennametal, madison, michigan, milwaukee, minnesota, quad cities, st. louis, wisconsin
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Use Kennametal’s HTS-C Indexable Drills to make 5xD and 8xD holes with indexable inserts in steel, cast iron, ductile iron, stainless steel, and nonferrous materials. Use where speed and economy are prime considerations.
Features and Benefits
- Metric and inch diameters are standard
- Center pilot drill for added stability and hole straightness
- Variable flute helix provides excellent chip removal
Easy Insert Change
- Robust pocket design requires only a simple wrench for insert removal
- Multiple grades and geometries available
Tailored Grades and Geometries
- New KC7815 and KC7820 grades feature multi-layer CVD and KC7140 with advanced PVD coatings for improved performance in steel
- Five DFT geometries standard for optimum cutting performance and superior chip control
- Grades and geometries can be tailored in each pocket for improved performance
- Carbide and HSS pilot drills are available to optimize productivity
- Intermediate diameters available as semi-standards.
- Engineered custom solutions available.
- Multiple diameters are available.
Tags: ann harbor, boring bits, chicago, davenport, des moines, detroit, drill bits, drilling, drilling bits, gary, green bay, illinois, indexable, indiana, insert, iowa city, Kennametal, madison, michigan, milwaukee, minnesota, quad cities, st. louis, wisconsin
Posted in Kennametal, Metal Tools | Comments (110)
Plunge easily through panels and router with ease with panel pilot plunge router bits from General Cutting Tools in Illinois servicing Illinois, Indiana, Michigan, Wisconsin, Minnesota, Iowa and the rest of the US.
Stagger Tooth Panel Pilot with Plunge Point Router Bits
Stagger tooth version of our standard two flute panel pilot which gives greater speed and stock removal than our single flute with the strength of a two flute bit.
Panel Pilot Plunge with Two Pilots and Hardened Boring Point Router Bit
Carbide tipped with two pilots and plunge hardened boring point thicker material and fast cutting. This enables the cutter to be guided by jigs or the inner frame from the top, middle or bottom of the cutter. These are very useful cutters for motor body building, caravans and boat building.
Stagger Tooth Plunge Panel with Center Pilot Router Bits
This version of the panel pilot has a stagger tooth configuration for fast, clean cuts, coupled with a solid pilot between the cutting edges. Designed specifically for the RV manufacturing industry to cut openings in ceilings and sidewalls, it can be used in any setup that has a template between the materials to cut.
Stagger Tooth Plunge Cutting Router Bits
Two cutting edges spaced 180° apart, each half the length of its flute. One extends from the tip to the middle of the flute, the other from the middle to end. The configuration combines the cutting speed and chip clearance of a single flute bit with the finish of a double flute bit. These tools are excellent for cutting dense or abrasive man-made materials and panel goods.
Panel Pilot Router Bits
These panel pilot bits have a pointed tip for plunge cuts, a concave grind for speed and an integral solid pilot. It is designed for fast cut out work and is used extensively in the mobile home and RV industries. The single flute version cuts fast and produces an excellent finish.
High Speed Steel Panel Pilot Router Bits
The ultimate boring and pilot bit! These HSS panel pilot bits are long lasting and perfect for mobile homes, modular homes and the RV industries. These router bits are ideal for wood panels, vinyl coated panels, wood panels and aluminum layered materials. Spiral down cut design tools eject the chips away from the operator. These are perfect for drywall, wallboard, vinyl coated panels, aluminum and plywood sandwich panels.
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