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| + Engineering Support! Our engineering expertise is available to provide technical support for the products we sell; and assist our customers in solving their engineering problems. |
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The
Fundamental Operation of SEL Series Rack & Pinion Linear Encoder or
Resolver Measuring Systems |
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Page
1 Rack and Pinion Mesh Geometry Page 2 Long Life & Trouble-free Operation Page 3 Precision, Fine Resolution & Unlimited Length of Travel Page 4 Page 5 Page 6 Page 7 Page 8
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. . . .
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The Fundamental Operation ... |
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Rack & Pinion Orientation |
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| The movement of the
rack is recorded by a pinion, which drives a resolver/encoder (see fig.1). This is a
non-contact system at the point of converting a mechanical motion into an electronic
position signal. In any non-contacting measuring system a precision air gap must be
maintained between the moving member and the sensors. Our gap is within the rotating transducer and accurately maintained by high quality bearings (see fig. 2)
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| It is easier to maintain closer tolerances with instrument
size components with small ABEC 7 ball bearings than a large machine member with large
bearings.
The point of mechanical contact is where the pinion meshes with the rack pitch line. This mesh is controlled by the unique flex plate mounting for encoder or resolver to less than one (1) pound of force thus providing zero backlash (0.00010" repeatability) and low reading errors with up to 0.010" misalignment between fixed and moving members of the machine yet negligible rack to pinion wear. |
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| <<<Back | Page 7 |
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