Flute Grinders


The Model 2650 Combination Cutting Tool/Burr Grinder is a "turn-key" 7 Axis CNC Production Grinder equipped with an automatic pick-n-place parts loader/unloader. Included in the base price is a Variable Speed Spindle, a Tooling Package with a Part Pallet Assembly, self contained coolant system and a complete package of our proprietary software. Unison's Model 2650 features a fully enclosed work area and an automatic steadyrest.

The Model 2650 is a rigid compact, high precision machine designed for high production manufacturing of small tools made from numerous materials such as carbide, HSS,ceramic, stainless steel, etc. This grinder is used by many of the largest manufacturers of dental and surgical burrs.

We design our Pentium™ based Computer controls with the Unison Programmable Controller (UPC). The CRT and pushbutton station with keypad is swivel-mounted and conveniently located at the work level. The computer has the ability to store up to 10,000 different part programs and wheel packs which can be easily recalled by the operator.

Unison's Version 7 Software coupled with Windows 7™ supports the most advanced touch screen capabilities permitting Unison to now offer an optional 15-inch touch screen LCD computer monitor on all of its CNC grinders. The Windows 7™ Operating System works seamlessly with Unison proprietary Version 7 Grinding Software which includes a unique "AUTO OPTIMIZE" feature designed specifically for reducing part cycle time without having to modify your existing tool programs. Unison's new software also allows the machine operator to quickly customize and/or modify tool geometry using a real-time 3D Parts Generator as well as provides a dual feedback diagnostic system for troubleshooting machine errors.

The flexibility of this machine's software allows for the most complex parts to be ground with ease. You are not "locked-in" to what the manufacturer of your equipment thinks tools should look like. In as little as four steps, tools can be defined, simulated and ground. Your operator can view those tools on the machine's touch screen monitor before any grinding begins. The operator knows exactly what the machine will be doing before it does it. We call this feature "Geometral".

The Model 2650 can be equipped with an optional Probe Assembly which is designed to be used with tools which have from one to ten flutes and can be utilized with endmills, drills, reamers and routers. The Probe Assembly locates the end of the tools, identifies flute position and verifies helix.

Standard machine features:

On-Board Real Time 3D Simulator
Automatic Pick-N-Place Parts Loader/Unloader
Self-contained 30 gallon Coolant System
Compact liquid cooled Grinding Spindle
Pressurized rotary axi
Preloaded ballscrew driven linear axis
Automatic ballscrew lubrication system
Oil Mist Lubrication System with automatic low level shutdown
Recirculating Way Lube System
Hand scraped and flaked machine ways
Totally enclosed work area

Approximate axis travel:

(X-Axis) Longitudinal Table Motion 108" [280mm]
(Y-Axis) Cross Slide Table Motion 5" [127mm]
(Z-Axis) Vertical Column Motion 7.5" [150mm]
(C-Axis) Spindle Swivel 250 Degrees
(A-Axis) Workhead Rotation Unlimited
X-Axis (Encoder) .00005" [.001mm]
Y-Axis (Glass Scale) .00002" [.0005mm]
Z-Axis (Glass Scale) .00002" [.0005mm]
A-Axis (Encoder) .001
C-Axis (Encoder) .001

For additional information regarding the products of Unison, please contact our Marketing Department at (248) 544-9500; fax us at (248) 544-7646 or e-mail us at sales@unisoncorp.com


Model 2650 - Video

Model 2650 - Image Gallery



The Model 4000 Super TruFlute is the ultimate for fast, accurate cutting tool production. This machine consists of 5-Axis having the most state-of-the-art controls.

The Model 4000 incorporates state-of-the-art technology in the machine's design. The machine utilizes a system of round hydrostatic ways on the X, Y & Z axes and a substantial C-axis assembly which minimizes machine deflection during the grind cycle.The hydrostatic components increase the machine's accuracy, rigidity and overall grinding speed. These special ways use an oil film under pressure between moving parts to minimize friction, increased damping, stiffness and mathematical accuracy.

The Model 4000 features Unison's proprietary software for program calculations and machine motion control. The machine's software employs a fill-in-the-blank system to easily define the dimensional data required for setting up cutting tools. Our software is known as "Geometral™" which allows your operator to quickly modify and customize your tool geometry making the Model 4000 Super TruFlute one of the most powerful and flexible machines on the market. You are no longer required to make tools the way the machine manufacturer dictates, but rather you design your own tools the way you want them.


The Model 4000 was Designed to Achieve Three Major Goals:

Vastly better surface finish of tools with consistent size and geometry tolerance
Fast machining with improved cycle times and easy programming
Extremely long machine life with reduced maintenance

Standard Features of the Model 4000:

Hydrostatic way system on X, Y and Z Axes
The wheel spindle is oil mist lubricated and is constructed with two pairs of super precision, angular contact bearings
Programmable variable speed grinding spindle
Double nut preloaded ballscrews with AC brushless servo drives
Oil mist lubrication system with automatic low-level shutdown
The machine features an automatic lubrication system

For additional information regarding the products of Unison, please contact our Marketing Department at (248) 544-9500; fax us at (248) 544-7646 or e-mail us at sales@unisoncorp.com


Model 4000 - Video

Model 4000 - Image Gallery



This machine was designed to regrind pulverizer blades in your factory thereby eliminating the costly expense of shipping them to a third party regrind facility. In addition, you can minimize the number of blades you maintain as spares since the blades can be quickly reground in-house for a fraction of the cost.

The Model 9100 Pulverizer Blade Regrinder is a 5-Axis turnkey grinder featuring an integrates 25 horsepower, direct drive, dual ended spindle. The direct drive spindle motor provides a continuous torque rating through its entire operating range.

The Model 9100 incorporates our latest tool grinding software utilizing Windows™ Operating System. The flexibility of our software allows your machine operators to customize grinding programs to meet your needs. Our Geometral™ software permits the operator an easy means of quickly modifying geometry making the Model 9100 one of the most powerful and flexible machines on the market today.

The Model 9100 regrind's Pulverizer Blades in your factory thereby eliminating the costly expense of shipping them to a third party regrind facility. In addition, you can minimize the number of blades you maintain as spares since the blades can be quickly reground in-house for a fraction of the cost.

For more information on how the Model 9100 can help your company become more efficient and cost effective, please click the link and read the article in the April 2009 issue of Cutting Tool Engineering Magazine.


The model 9100 was designed to achieve four major goals:

High Consistent quality of finished parts
Fast programming and machining
Long machine life with reduced unscheduled downtime for maintenance
Allows minimal stock removal which extends the pulverizer blade life

For additional information regarding the products of Unison, please contact our Marketing Department at (248) 544-9500; fax us at (248) 544-7646 or e-mail us at sales@unisoncorp.com


Model 9100 - Video

Model 9100 - Image Gallery



Model 688 4-Axis CNC TruFlute Helical Grinding System produces straight or helical flutes in one pass. This machine automatically grinds straight and tapered fluted tools such as drills, reamers, end mills, etc. Known as a "Workhorse", the Model 688 is a rigid and proven helical grinding system designed for the manufacturer of both standard and special tools.

The Model 688 Four Axis CNC TruFlute Helical Grinding System produces straight or helical flutes in one pass and automatically grinds straight and tapered fluted tools such as drills, reamers and end mills. The Model 688 is a rigid and proven grinder designed for the manufacturer of both standard and special tools. It is furnished with a curtain enclosed work area, splash guards and a access door for loading and unloading the workpiece.

The Model 688 is known as a "Workhorse".

Major benefits:

Proven reliability
New control featuring a Pentium Processor
Flute and Relieve in one chucking
Software which includes a 3 dimensional predictor
Multi-wheel packs can be used on this machine
Ease in programming custom shapes
Easy programming with instant recall of all programs
Capacity to store up to 10,000 part programs and wheel packs

Standard machine features:

The Grinding Spindle is oil mist lubricated and is constructed with two pairs of precision angular contact bearings
Wheel speed capable of 3600/6000 RPM
Cast iron ways with adjustable gibs
Zero backlash, preloaded ballscrews controlled by servodrive amplifiers
Oil mist lubrication system for the wheelhead with automatic low level shutdown
Automatic Bijur way lubrication system
Fused disconnect
Self-contained 100 gallon coolant system with optional central system hook-up
OD size range .01" to 10.00"

For additional information regarding the products of Unison, please contact our Marketing Department at (248) 544-9500; fax us at (248) 544-7646 or e-mail us at sales@unisoncorp.com


Model 688 - Video

Model 688 - Image Gallery


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