DRAPER 10751/1180 Drill Grinding Attachment Instructions
- June 6, 2024
- DRAPER
Table of Contents
THE TOOL COMPANY
DRILL GRINDING
ATTACHMENT
| STOCK No.10751 | PART No.1180 |
|---|
• INSTRUCTIONS •
IMPORTANT: PLEASE READ THESE
INSTRUCTIONS CAREFULLY TO
ENSURE THE SAFE AND EFFECTIVE USE OF THIS TOOL.
To produce the best results, the attachment must be situated in the right
position in conjunction with your bench grinder. With the varying designs in
bench grinders, either the bench grinder or the attachment may have to be
raised with packing.
The attachment must also be securely fixed with a bolt washer and butterfly
nut in the slotted base, which also helps with adjustment.
The attachment must be positioned so that it brings the head of the trough to
the face of the wheel (Fig.1). Varying positions can be obtained with the aid
of the slotted base, pivot pin, and adjusting nut, for setting the drill
angle.
Operating Instructions:
- Unscrew the drill clamp and lip stop just enough to allow for the drill to be inserted into the trough. At the same time, release the locking nut and adjust the feed screw on the slide bracket, allowing the drill to protrude at the trough head. The feed screw nut should now be adjusted to produce the overhang required. (See table for overhang and Fig.2). Tighten locking nut on slide bracket, raise the lip stop and secure behind cutting edge of the drill and tighten drill clamp. (Fig.3).
- Unscrew the butterfly nut on the base and move the whole unit until the drill tip touches the grinding surface and then secure.
- Swing the attachment back and forth on the pivot pin so that the drill tip just touches the grinder.
- Start the grinder and slowly swing the attachment back and forth, using the feed screw to achieve grinding.
- Experience with use will tell you when an edge has been ground. At this point turn off the grinder, release the drill clamp screw and turn the drill bit over to grind the opposite angle. Tighten the clamp and commence as before.
Drill angles obtainable and overhangs required:
Angle
| Overhang|
Usage
---|---|---
88
| 1.16″| Hard materials, thin sheet. Helps to prevent snatching.
68
| Half drill diameter| Small drill for high volume production.
59°
| Half drill diameter| General-purpose drilling.
49°
| Drill diameter| Soft materials, (plastic, wood, lead, copper, light alloy, etc.)
41°
| As required| Countersinks.
WARNING:
The Health and Safety Executive recommends in their document HS(G)17 that
grinding is only performed on the face of the grinding wheel and not on the
side of the wheel. To grind on the side of the wheel could cause wear and
weaken the wheel.
DRAPER TOOLS LIMITED,
HURSLEY ROAD, CHANDLER’S FORD,
EASTLEIGH, HANTS. SO53 1YF. ENGLAND.
TEL: (01703) 266355.