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Jigs and fixtures |
Forcing split clamping elements
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The split clamping elements are using the pushing or pulling action of screws in order to clamp a part. The correct application of the screw force affects the efficiency of screw force during clamping. |
Vacuum clamping devices and grippers
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Vacuum clamping is suitable for light machining of thin and flexible parts, with awkward shapes. The vacuum grippers are used for transferring light weight parts for stacking, packaging and general orientation operations. |
Using steel balls, oil, PVC paste and grease in fixture design
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Steel balls, oil, PVC paste and grease (hydraulic pressure) actuated by hand produce fixture design capable for high clamping forces, simplified and low cost manufacturing. This article describes the application of the above elements (parts and materials). |
Hammer action
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In manual operating fixtures is difficult to apply a large clamping pressure through cam (or wedge) actuating mechanisms. The reason is friction due to small cam angles. The solution is to incorporate striking or hammer action. |
Eccentric clamp
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Eccentric clamps are very simple and useful fixture components. Their advantage is their high force ratio. This article describes the basic design data and formulas for initial calculation of a round eccentric. |
Fixed locating supports (rest pads)
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To locate workpieces from datum surfaces requires fixed supports (rest pads). This article describes some useful rules when designing fixed supports. |
Machining of mirror geometry cylindrical parts
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This article describes how you can manufacture cylindrical parts with mirror geometry by using a simple lathe. Shape and size tolerances (concentricity, diameters) are easy to control and secure functionality with mating parts. |
C-washer nut
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C-washers are very simple and useful components for the tool designer. The C-washer nut has a build-in handle which can be very helpful when there is a lot of clamping to do. |
Shaft locking-screw lock retainer
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Another method of locking a shaft is with a screw lock retainer. The shaft is totally secured by means of a dog point or a round end shaped set screw. |
Spot face milling for precision assembly
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When a designer follows the road of fine mechanics and precision at higher levels, he must concentrate at every detail, every potential source of inaccuracy. Such a source is the elastic deformation due to thread-bolt forces. The solution: a simple spot face. |
