| Example of a Cam-and-screw mechanism |
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The major components
of linear motion system can be categorized as :
Actuators, Support systems (bearings). |
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| Common linear actuation devices
for single axis motion included, but are not limited
to: |
- Various complex linkages such
as a walking beam or slider crank mechanism
- Gear rack and pinion set
- Plate or disc-cam drive with
fixed-axis follower
- Cylindrical-cam drive with
fixed-axis follower
- Chain, belt, or cable drive
in the linear part of its path, with or without
special attachments
- Plastic drive tape
- Sliding-action leadscrew (usually
acme screw), with nut
- Ball bearing leadscrew (ball-screw)
with nut. The balls recirculate into and out
of the load zone
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| X-Y Point-to-Point / Motion:
Linear |
Application description: X-Ray
scanning equipment used in the quality control of
printed circuit boards and water chips.
System is an automated PC-based system that efficiently
increases throughput and eliminates operator error.
The host of computer will interact with the motion
control card using a "C" language program.
The operator will have the option to manually override
the system using a joystick. |
| Machine Requirements: |
- 2-axis analog joystick
- Joystick button
- Travel limits
- Encoder feedback on both axes
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| Display Requirement: |
- X and Y position coordinates
operator adjustable parameters:
- Dimensions of sample under
test
- (0,0) position- starting point
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| Motion Control Requirement: |
- Motors with accurate and automated
positioning
- Manual joystick control
- Continuous display of X &
Y axis positions
- User-friendly operations
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| Example of Circuit board scanning |
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