ROYALMASTER GRINDERS, INC.

The TG-12x3 machine has a 12 inch (304mm) diameter x 3 inch (76mm) wide grinding wheel. Designed with the smaller shop in mind, the basic machine has a lower cost, yet full centerless grinding features. It
allows the smallest shop to become competitive in centerless grinding. This infeed and thrufeed machine is equipped with single point diamond dressers."the ideal machine for the job"

The TG-12x4 machine can be equipped as an infeed or thrufeed machine. It has a 4 inch (101mm) wide grinding wheel, single point diamond dressing capabilities, and the ability to hold micron tolerances. The heavy duty construction on the 4 inch model adds to greater machine stability. The TG-12x4 is a highly versatile machine with the ability to grind multiple step diameter parts.The RMG 12x4 can grind many different parts such as the ones below. Automatic loading or Hi-Accuracy systems can be added for greater versatility.

Royal Master's Crush Grinders are manufactured in both 3 and 4 inch wide (76mm) and 101mm) wheel faces, with crush capabilities up to three inch (76mm) profile lengths on both models. Our crush grinders have additional versatility with single point diamond dressers for both the work and regulating wheel.Crush forming is an accurate technique for placing a form into the grinding wheel. Often a configuration may not be dressed into the grinding wheel using a single point diamond and template form, such as a small radius adjacent to a 90 degree shoulder, a flange in the middle of a part, or a slot; whereby crush form infeed grinding is required. Many "V" or formed type threads may be ground on a thrufeed basis. Crush rolls are usually manufactured from hardened high speed steel or tungsten carbide.

Hi-Accuracy TG-12x4 Centerless Grinders

The machine's design is based on our standard grinder line with some very notable exceptions. The machine bed has been enlarged to add to the stability of the system and accommodate the new ram swiveling feature. The ram now swivels on a pivot under the ram, moving the entire lower ram and dresser assembly together. This is an advantage during Thrufeed grinding the guides do not have to be readjusted when you swivel. Also, a digital indicator gauges the swivel and an easily accessed handle makes the adjustment. We have also added a servo drive regulating wheel system. The electrical system is easily accessed by way of a JIC electrical enclosure mounted in a space saving position over the coolant tank.

The accuracy of the system was tested on customer applications and the results were impressive. We were able to achieve roundness to less than 10 millionths, and straightness to less than 10 millionths. We are able to make size compensations with this system in 10 millionths of an inch. The positioning system consists of a servo driven ball screw unit and the system's movements are verified with a glass scale with 4 millionths resolution.

The operator interface is an operator friendly 15" touch screen. This PC driven unit is easily navigated and learned with pictorial buttons for easy identification.

Post process gauging and auto feeding systems can be integrated into the system, as well as specially designed grinding systems.

The Royal Master DRF series is available in manual or CNC controlled systems. The

diamond roll Dressing of the Grinding Wheel is used for intricately shaped parts, medium lot size repeat orders, or long production runs. The above machine is shown with the Allen Bradley CNC Control, with automatic diamond roll dressing and compensation system. With this system, size incrementation adjustments can be made as small as .00010” .00025mm.

The Diamond Roll Form machine was specifically designed for infeed grinding with the built in capabilities of form dressing the work wheel with a diamond impregnated master form roll. The diamond roll form method of dressing or forming the work wheel is especially advantageous on long run jobs, short run repeat orders or on parts where the wheel form cannot be dressed by conventional diamond dressing or crush dressing methods.

When you are in the TG-12x4 picture and you click to see the .pdf, it STILL goes to the old brochure
You should have a .pdf link to each brochure somewhere on the site by the pictures of their corresponding machines

DWT12x4
DWT 12x4 Now you can infeed grind carbide, ceramic, and other hard materials requiring a super abrasive grinding wheel and still have all of the convenience and speed of redressing a conventional abrasive type wheel.This new truing feature allows for the mounting of a CBN or diamond work wheel to the machine, having it trued to the spindle, and re-trued as needed in minutes without ever having to remove the wheel from the machine.This new machine, the Royal Master Model DWT-12x4, is specially built to include an extended machine bed for a permanently mounted diamond wheel dresser. The diamond wheel dresser is PLC controlled with x and y slideways and a reciprocating rotating diamond disc. The wheel dressing function will be initiated on demand by the touch of one button. Once activated, the diamond wheel dresser will perform a preprogrammed dress function and then reset itself for the next dress requirement.