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In Focus - Archivo Marzo 2008
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Quick-change systems
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03.03.2008 -
For companies that have to respond quickly to changing market requirements or have to convert their production lines frequently for other products and product variants, time is money, because every changeover means a loss of productive time. Quick-change systems for components such as grippers and tools help in such situations to make production as flexible as possible and to minimize conversion times. They can be used effectively wherever:
- fast conversion to new products or other product variants is required
- handling or machining tasks necessitate the use of different gripping systems or tools
- maintenance intervals and downtimes due to maintenance of components and tools need to be minimized
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Significant reduction of time expenditure
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Just how much time can be saved by the use of quick-change systems is demonstrated by a direct comparison. Experience shows that a proficient operator needs between 10 and 30 minutes to manually change a standard pneumatic gripper, including unscrewing and screwing on the gripper and disconnecting and reconnecting the pneumatic and electric supply lines.
An automatic changing system needs only 10 to 30 seconds for the same process of changing a gripper or tool without the need for personnel. Even with a manual changing system, the time advantage is similar, although an operator is required in this case.
SCHUNK recognized the enormous benefits of quick-change systems early on and can now offer its customers an entire line of these systems. They include not only quick-change systems for robots, ranging from very small devices to changers for loads weighing a ton or more, but also quick-change systems for gripper jaws, which can be used for very fast changing of gripper fingers.
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Miniature changing system MWS
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Miniature changing system MWS
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The miniature changing system MWS is a very compact and flat tool-changing system for small robots and is available with an outer diameter of 20 and 30 millimetres. The miniature device, which is designed primarily for micro-system technology and the handling of miniature components, can hold both tools and handling devices. The MWS can not only be operated manually, but also enables automatic changing of tools in combination with the corresponding changing magazine. As small as the MWS 20 is, it nevertheless is equipped with six (MWS 30: ten) integrated energy feed-throughs, which can be used either as pneumatic feed-throughs or for electric signals. In addition, long workpieces or tools can be inserted through the centre bore, e.g. for laser machining of a workpiece or for monitoring the work area with a machine vision system.
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Flat manual changing system FWS
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Flat manual changing system FWS
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The flat manual changing system FWS is designed for the purely manual changing of components on small robots or SCARAs, because it can be released with a single movement, without the need for an additional tool. The FWS does justice to its name, since it has an overall height of only 14 mm. Despite the extremely flat design, it has integrated feed-throughs for up to four fluid and/or 24 electric signals; the central arrangement of the electric and pneumatic feed-throughs is especially suitable for such automation components that are supplied with internal lines.
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Manual changing system HWS
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Manual changing system HWS
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The manual changing system HWS, as the name says, is intended for fast changing of components by hand. To facilitate this, attention was paid during the development especially to ease of operation, so that the HWS can easily be locked or released by means of a lever. The HWS, due to its compact design and manual operation, is an economical changing system. Despite its low weight, it can withstand high loads between the robot and the gripper and therefore ensures a form-fit connection without play. Pneumatic feed-throughs are integrated for the energy supply of the connected grippers; electric feed-throughs are available optionally.
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Gripper changing system GWS
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Gripper changing system GWS
1. Gripper changing magazine
2. Gripper changing adapter GWA
3. Gripper changing head GWK
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The pneumatic gripper changing system GWS is designed for automatic gripper or tool changing and features a self-locking function by means of built-in springs in the event of a power failure. This very compact system is equipped with power transfer elements made of hardened steel and can therefore withstand high forces and payloads.
Up to eight energy feed-throughs can be integrated, including connectors for the transmission of electric power up to 380 V / 25 A.
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Quick-change system SWS
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Quick-change system SWS
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The pneumatic quick-change systems of the SWS series can be used wherever compact dimensions and short changing times between the handling device and tools such as grippers or electrode holders are required. The SWS systems feature not only effortless locking and releasing, but also allow the choice between different energy transmission modules, which can be adapted to the respective models. Up to 10 pneumatic couplings for energy transmission are integrated as standard equipment in these changing systems. The patented No-Touch Locking System enables secure locking of the SWS even if the distance between the head and the adapter is as large as 2.5 mm.
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For heavy loads: SWS-L
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For heavy loads: SWS-L
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For especially high payloads, SCHUNK developed the quick-change system SWS-L, which securely handles loads of more than 1.1 tons (model 602). Therefore, these systems are suitable for handling heavy workpieces, for working with heavy gripping systems such as grippers and suction spiders, or for heavy tools, such as those used in assembly processes in the automotive industry or for press bonding. The SWS-L is square and therefore features four outer surfaces for connection of feed-throughs for the pneumatic, hydraulic or electric supply of the connected systems by means of mounting flanges.
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Integrated valve terminal: SWS-I
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Integrated valve terminal: SWS-I
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The quick-change system SWS-I features six quick-response 3/2-way screw-in valves, which replace an entire valve terminal. Instead of a bundle of cables and hoses, only a single line is needed for the supply of compressed air and electricity, since the gripper and other tools are controlled via the integrated valves. The two remaining supply lines fit through centre bores with diameters of only twelve millimetres and can therefore easily be installed within the arm of SCARA robots.
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Changing system for gripper fingers: BSWS
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Changing system for gripper fingers: BSWS
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For changing gripper fingers, SCHUNK developed the quick-change jaw changing system BSWS, which speeds up the changing process significantly and therefore reduces conversion time. The BSWS is screwed onto the base jaws of the gripper, while an adapter pin is screwed onto the respective top jaw. Now it takes only a few moments to insert the top jaw on the BSWS and lock it with a cam. Thanks to this easy handling, a single gripper can now be used for a wide range of applications, with optimized set-up times for the entire process.
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Universal intermediate jaw UZB
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Universal intermediate jaw UZB
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The universal intermediate jaw UZB was developed for changing jaws quickly; the UZB makes it possible to convert a gripper for another task within a matter of seconds, without the use of tools. Since the finger stroke can also be set simultaneously without tools, conversion to other workpiece dimensions is very fast – and the adjustment range is approximately three times the gripper stroke!
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Total flexibility: quick-change systems and mechatronics
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Both the quick-change systems for components such as grippers and tools and the quick-change jaw changing system BSWS and universal intermediate jaw UZB can be combined with mechatronic grippers and components. This makes it possible to combine the benefits of flexibility from both areas, and the changeover to different products and variants is almost fully automatic, with no interruptions in production.
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12.2008
Quick jaw change brings flexibility and substantial savings
Flexibility in production is a crucial competitive advantage. Only companies that can respond to demand with flexible yet absolutely precise production can supply their customers rapidly with a constantly increasing variety of products without needing to build up expensive and inefficient stocks.
 más…
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11.2008
Pneumatics or mechatronics? … It all depends!
To date, pneumatically driven gripper modules have been used primarily in gripper technology. Recently, however, more and more electric grippers have been coming onto the market. Both competing systems have powerful arguments in their favor.
más…
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10.2008
High-Performance-Cutting (HPC)
Hard on the outside, clever on the inside: Toolholder systems developed especially for HPC that have strong rigidity as well as good vibration dampening provide clear benefits for HPC.
más…
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09.2008
Cleanroom
The importance and the use of cleanrooms in assembly and handling are constantly increasing.
más…
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08.2008
Clamping Force / Torque
We are frequently confronted with torques on a daily basis, even though we do not recognize them as such.
más…
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07.2008
Convenient robot or attractively priced spindle gripper?
A significant potential for increasing efficiency in modern machining processes is the automated loading and unloading of the machines.
más…
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06.2008
Polygon clamping technology - round pegs in polygonal holes
The principle behind polygon clamping is surprisingly simple. The know-how that makes it work is however highly advanced.
más…
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05.2008
Packaging
A package for everything
Packaging is a universal function that is required in practically every industry and meanwhile is so important that it has become a separate industry itself.
más…
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04.2008
Magnetic clamping technology has strong attraction
Workpiece clamping with electroermanent magnets reduces set-up times by up to 50 percent and brings about significant advantages especially in the manufacture of large parts.
más…
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03.2008
Quick-change systems speed up production
Changing systems for components such as grippers and tools add a high degree of flexibility to production processes
más…
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02.2008
Vibration damping
Improves surface quality and reduces wear on the tool and spindle.
más…
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In Focus - 2013
In Focus - Archivo 2012
In Focus - Archivo 2011
In Focus - Archivo 2010
In Focus - Archivo 2009
In Focus - Archivo 2008
In Focus - Archivo 2007
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