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Understanding
your screwdriving equipment source does not have to be complicated. It is
important to select the proper source by matching the intended purpose with
the actual obtainable result. In short: detail the needed application as
clearly as possible and match it with a source capable of fulfilling this
need. The
first consideration has to be given to the application method and whether it
is to be a “handheld” application [includes an Operator to position the
equipment] or a “stationary” application [uses a mechanical slide to position
the equipment]. Once the application method has been determined, the required
process can be considered. However,
today’s products sometimes require special processes, where multiple screws
have to be assembled, using the same equipment. Additionally, the requirement
may include several different torque and angle values, the use of different
bits or sockets and on top of that, the system needs to be designed using a
“Lean” Manufacturing
methodology! Example Requirements ·
Different fasteners ·
Different torque or angle values ·
Different fastener drives (bit/socket) ·
“Lean” execution ·
Handheld Assembly ·
Fast Cycle Time ·
Part Presence Verification |
Application
Considerations A
standard and straightforward process would be the assembly of a product with
one size of fastener driven to a predetermined torque. Those types of
applications are easy to process, using only the most standard available
components, such as a feeder bowl with a pneumatic, torque-controlled
screwdriver for a handheld application or a screwdriver with an automatic
positioning slide for a stationary application. Available
Solutions The use
of the “Toolbox TB 7” in combination with an EC-Electric Screwdriver
(brushless DC-motor) offers a perfect solution for those types of
applications. This toolbox incorporates cavities for seven (7) different
bits/sockets and each cavity can be pre-programmed to a different torque,
speed, angle, etc. Once the operator removes a bit/socket, the AST30
controller activates the pre-programmed setting, eliminating any
time-consuming selection process and programming change. |
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The
station could include feeder bowls as a possible option, which are tooled to
accept specified fasteners. It is recommended to provide each feeder bowl
with refill hoppers, to increase |
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