A drilling jig is a device that holds and
aligns a work piece securely while guiding a drill bit to create precise holes
at predetermined locations and depths.
Components:
- Guide Bushings: These are hardened steel bushings or sleeves that guide the drill bit and maintain its alignment
- Clamping Mechanism: Holds the work piece securely in place during drilling to prevent movement.
- Locating Pins: Assist in positioning the work piece accurately within the jig.
- Base Plate: Provides a stable platform for mounting the jig on a machine or workbench.
Types of Drilling Jigs:
1. Simple or Template Jig:
a) Uses a template or pattern of the hole pattern
to guide the drill.b) Suitable for drilling identical holes in
multiple work pieces.c) Simple in design and cost-effective for
repetitive drilling tasks.
2. Plate Jig:
a) Consists of a flat plate with drilled bushings
aligned according to the hole pattern.b) Effective for drilling holes in a straight
line or in a specific geometric pattern.c) Often used for larger work pieces where
precise alignment is critical.
3. Channel Jig:
a) Utilizes a channel or groove system with
adjustable stops and clamps.b) Allows for flexibility in positioning and
securing the work piece.c) Suitable for drilling holes at varying
distances from an edge or reference point.
4. Angle Jig:
a) Designed for drilling holes at specific angles
(other than 90 degrees).b) Ensures accurate drilling of angled holes
without the need for complex setups.c) Commonly used in woodworking and metalworking
for angled joints or fittings.
5. Indexing Jig:
a) Includes indexing mechanisms or rotary tables
to drill holes at precise intervals or angles.
b) Ideal for creating evenly spaced holes around
a circular or irregular pattern.c) Provides high accuracy and repeatability in
batch production or assembly operations.
