Box/CellularConstruction – extremely Heavy throughout
Entire Base is Stress Relieved
Interior of Base is very open for easy access (lots of clearance) and cleaning (Bed Knives and Tub)
Easily Aligned and Leveled from outside along the length of the machine.
(We will be happy to discuss our recommendations regarding the important foundation requirements under the machine).
The Reform Carriage Design allows Easy Access for Operation and Wheel Changing and Adjustment from the front of the machine (not the rear of the machine as on some competitive machines).
Machine Ways were Precision Machined prior to installation of Hardened Precision Ground Way Strips (Steel Bands) on the Tops of the ways as well as the rear side guiding ways.
The Carriage Rides on Hardened Precision Ground Steel Bands (Wear Strips) along the length of the base on the tops and sides of ways which can be easily and inexpensively replaced if need be after some years of use. This way if ever damaged or as they wear then they can be easily and inexpensively replaced in order to maintain the accuracy of the ways and machine. This is important as there is always the possibility of damage and /or wear. The long term life of the accuracy of the machine is fairly easily maintained and after years of operation with proper cleaning & maintenance the machine ways can be easily restored for improved accuracy if desired
Adjustable Way Wipers also included. As a result of having the way wipers and the replaceable steel bands – Accordion Way covers are not required where they are required for machines equipped with hardened way in order to protect them as any wear or damage will affect the grinding accuracy of such a grinder.
Grinding Head Carriage
The Carriage is Wide with Maximum Distance between bearings in order to get maximum stability and accuracy while operating. The carriage is Stress Relieved and is made of oversized, non-distorting, vibration-damping material
The Carriage Design also provides Even Load Distribution and Maximum Rigidity.
The Grinding Head Carriage is carried on 4 Horizontal Re-adjustable with race roller bearings
4 other bearings are used for Carriage Side Alignment. This system ensures a very accurate, easily adjustable carriage transmission system.
Grinding Motor Slides – Grinding head mounted on long hardened and ground flat guide and are adjustable for wear.
PRIMARY GRINDING HEAD
Precision Grinding Motor – 11 kw / 15 HP – 1750 RPM (continuous duty rating), Dynamically Balanced & Manufactured by “Reform Motor Division”
Extra heavy duty, high precision Grinding Head Motor Spindle, mounted in precision taper roller bearings.
Any bearing play can be easily taken up with a special nut assembly on the bottom of the grinding head motor.
Motor is Totally Enclosed, sealed and windings are encapsulated in Epoxy.
Head is Slewable (Tiltable) for Concave & Surface Grinding.
Head is Cross-Adjustable for precision hollow positioning
10” Diameter Grinding Wheel & Backing Plate
Downfeed & Control Of Grinding Head
The Vertical Feed of the Grinding Head is through the use of a Precision Motor Drive Motor which is directly coupled to a Vertical Heavy Screw (with Special Nut Assembly), completely eliminating any play, which might develop over the life of the machine.
For highest grinding precision, the downfeed screw is axially pre-tightened with a combined thrust-radial bearing corresponding to the grinding motor and carriage weights, in order to ensure automatic weight balancing. The guide ways, & spindle gear are mounted under covers, additionally protected with wipers and the maximum up/down movement pre-tested with limit switches.
Power Rise and Fall to grinding head assembly via electrical control giving you positive quick and exact positioning as desired
Automatic Mechanical Down-feed System utilizing a Specialmotor(for quick up/down) enables the operator to preset the machine with a Set Finish Point so that the grinder will proceed at a certain amount of down feed per stroke, back and forth and when the down feed cycle is completed then the machine goes into the Spark-Out Cycle, which is a preset number of strokes back and forth.
Note:With this the operator can do other jobs with the machine automatically grinding and then with auto shutdown at the end of the preset program.
Return of Head to Start Position for Re-start
Mechanical Automatic Down feed is Infinitely Variable .0002” to .008” per pass (0.005 to 0.2 mm/pass)
Longitudinal Carriage Feed System
2 Speed feed to the Carriage (36 & 72 FPM) which is ideal for many types of products including very slow constant feeds for carbide (Variable speed is optional)
The Feed System utilizes a Rack and Pinion Drive System (Helical / Angle Cut)– for assured continued smooth operation (even as wear develops) giving very smooth drive characteristics and smooth carriage reversing and head direction.
With this system it is a very positive drive for heavy or light grinding and it does not wear and cause a jerking motion like some other drives will over a period of years of operation.
It is also very easily maintained (when worn) (ie. replaced – Rack is in approximately 40” long sections doweled into position)
The Helical Pinion is belt driven so if there is a reverse failure, the belt will slip rather than hurt the pinion. If there is a drive failure, the carriage will go to the end of the machine and there are rubber shock absorbers to protect the carriage and base.
Grinding Length can be easily varied by movement of length stops – carriage is reversed by the use of non-contacting proximity switches.
Longitudinal Travel can be easily started or stopped by electrical means.
The Coolant is pumped by a powerful pump from the Separate Coolant Tank, which sits at the rear along the length of the grinder. The coolant travels to the grinding head carriage and then the flow is split. One Outlet Goes Through the Hollow Spindle of the Main Motor to the end of the shaft where it is defected out to the inner side of the grinding wheel (which is the hottest spot of any grinding – when the carriage is traveling to the right and is really where the coolant is needed for cool grinding and long wheel life). The Other Outlets go to nozzles directed at the outer edge of the grinding head(s) being used and material being ground. Each nozzle has a Mechanical Valve for control of volume of flow to each nozzle. This full flush cooling ensures a cool knife and a clean wheel for the best possible grind and super wheel life.
Cooling through the Spindle also ensures constant cool motor temperature hence longer life and tighter bearing set-up/loading (hence no bearing play).
The Coolant then proceeds with the swarf to the left hand end of the machine where it flows out into the separate tank along the back of the machine for final separation and cooling. (See Optional Coolant Cleaning Systems).
There is a Wash down Hose supplied hooked up to the Coolant Pump. It is used to wash down the knives and the bed when finished grinding. Also can be used as a coolant tank emptying hose. (Variable Volume)
The Operator Controls are conveniently mounted on the electrical Panel at the Right end of the grinder for easy Access and are clearly arranged, comprising the main start-stop Push-Buttons (lighted type) as shown on the machine on Page 1 of the quotation.
Y-Delta Starter for Main Grinding Head (Slow Start or low amperage start – good for power conservation and good for motor)
Safety Systems included – Feed will not start unless Magnetic Bed (if supplied) is magnetized; High Speed down feed of grinding head is locked out when grinding head operating – Jog only, Master All-Stop Button Etc.
Electrical Panel (mounted) completely Pre-wired and at left end of machine for easy access. Supplied with starting, switching and overload controls. The controls are clearly arranged, comprising the main start-stop push-buttons (lighted type). Controls are conveniently mounted on a Console above the Grinding Head.
Magnetic Clamping Table
6 inch (150 mm) Wide Magnetic Bed
Patented Sinusoidal Pole – Pitch for maximum Holding Power.
Large turning shaft with H.D. Pinion and Gear Turning and large Micrometer Dial to Magnetic Bed.
Quick Set-up Knife Aligning Bar System
Note: Magnetic Bed Plates can be easily Reground as any wear or roughness develops (up to 12 mm or 0.45” can be ground off before Mag. plates must be replaced.
Grinding Width (Max.)
Grinding Wheel Max. Clearance – approx..
Magnetic Table (Bed)
6” wide swivelable with Heavy Pivot Shaft
Primary Main Grinding Motor
15 HP (1750 RPM)
Grinding Wheel Size
10” North American Style (Nut Inserted)
Feed Speed of Grinding Carriage
2 speed 36 and 72 fpm
Down Feed of Grinding Motor
Fully automatic, adjustable /stroke – Mechanical
Output of Coolant Pump – approx..
12 gal/min. (for main head)
Wash down Hose – Output – approx.
Machine Condition: Cleaned, Checked and repaired where necessary
Serial No: 5449 Year Manufactured: 1994 Listing#: GS REF21-51-1-602953