• MODEL 700 AUTOMATIC DRILL POINTER
• MODEL 600 AUTOMATIC DRILL POINTER
• MODEL 600 SEMI-AUTOMATIC DRILL POINTER
• OLIVER MODEL 21HD DRILL POINTER
• OLIVER DRILL CHART

MODEL 700 AUTOMATIC DRILL POINTER

The newest product in the  Oliver of Adrian line is the Model 700 Automatic Drill Point Grinder which combines the excellent features of the Oliver drill point grinders and adding a pushbutton control, we have made the machine totally automatic.  This unit sharpens two flute, three flute and four flute drills in the capacity range of 1/2” to 3” diameter (capacity can be increased to 4"). 

The superior Oliver generated helical point is produced by use of a pushbutton control.  The Model 700 can produce the popular double angle point which consists of self-centering, generated helical and corner bevel point grinds.  The operator can choose any of these three points.  There is no costly setup to grind drills, no cam changes or grinding wheel changes for different type points.

Closer hole tolerance, better wall finish, burr-free holes during the drill break through will be realized along with longer lasting drills because of the variable clearance and adjustable point angles for different materials. Spade drills can be ground in their own holder which gives much closer tolerances compared to conventional methods. 

The Model 700 Automatic Drill Point Grinder is supplied with a pushbutton control panel as shown in the photograph at the right.  This operator console panel includes pushbuttons for controlling the cycle of the machine.

Features also include an automatic infeed for regulating the amount of stock to be ground from the drill. The machine is supplied with a separate tank and motorized pump along with a splash guard and piping to provide coolant to the grinding area.

MODEL 600 AUTOMATIC DRILL POINTER

MODEL 600 SEMI-AUTOMATIC DRILL POINTER

Oliver of Adrian is the foremost producer of drill point reconditioning equipment.  Our most popular unit is the Model 600 Drill Grinder which is truly universal.  Two flute, three flute and four flute drills are handled with equal ease on an automatic basis.  Variable  included point angels are readily obtained. Variable clearance or lip relief angles can be dialed in.  The geometry that is best suited for your manufacturing procedures can be added to your drills easily and quickly.

The revolving chuck and the oscillating grinding wheel spindle are coordinated with a direct gear positive drive.  It is a heavy, powerful and rigid machine of proven design that will cover a wide range of applications and give you many years of useful service.

The Model 600 Automatic Drill Grinder pictured above is supplied with an airdraulic infeed unit that allows the operator to select the rate of infeed and the total amount of stock removal.  This feature, combined with the automatic grinding cycle, permits the unit to function without an operator once the loading and operating sequence has been completed.  The machine is also supplied with a tank, pump, splash guards and piping to provide coolant to the grinding area.

The Model 600 Semi-Automatic Drill Pointer is offered as an option to those who do not have sufficient quantities of large drills or who are not involved with large amounts of metal removal when re-sharpening drills.  It is the same machine as the automatic unit in every respect except it does not have the automatic infeed system.

The machine has the automatic grinding cycle and every cutting lip is sharpened on a continuous automatic basis.  A simple hand wheel is used to feed the revolving chuck and drill toward the grinding wheel where the automatic sharpening cycle takes place.

The Oliver Model 600 Drill Grinders do not require skilled labor as operators.  Set up is simple and continued accuracy is assured since the chuck is easily adjusted to compensate for wear over a period of time. 

OLIVER MODEL 21HD DRILL POINTER

The Oliver Model 21HD Drill Pointer represents the finest approach for sharpening small drills that is available on the market today.  Tests have shown the procedure used for sharpening larger drills on most conventional drill points cannot be depended upon for sharpening smaller drills.  It is very difficult to locate off the flutes of small drills and therefore, the Oliver method of chucking the drill on the ground margins insures a much higher degree of accuracy.

The Oliver Model 21HD Drill Pointer is a complete precision machine tool for accurately grinding drills from 3/32” to 1/2” diameters.  The familiar Oliver point, having increased clearance as the center of the drill is approached, is produced on this unit.  The style of grind shows up to advantage on drills approximately 1/8” diameter and larger.   The unusual grinding action is obtained by means of cam actuated swivel bearing which moves the drill in a horizontal plane while being swiveled vertically.  The Model 21HD will also produce the standard conventional constant clearance drill point if desired.

A large 5” diameter cup wheel is utilized to minimize grinding wheel changes.  A built in diamond dresser trues the face of the wheel in the same plane at all times regardless of the included angle you wish to grind on the drill point.  The drill is first inserted in the drill holder and then positioned for length to a built in setting gage to control the amount of clearance required.  After clamping the drill in place, the holder is inserted in the trigger grip assembly.  The first cutting lip is ground and then the holder is reversed to permit the grinding of the second cutting lip.  This method is simple, positive and accurate.