Locating Principles & Devices
Locating Principles & Devices1LOCATING PRINCIPLESTo position the work piece to tool, to ensure precision in machining Locating : dimensional and positional relation- ship b/w work piece and toolLocator: device to establish and maintain position of a part in a jig or fixture2BASIC PRINCIPLESPositioning the locatorAccuracy & tolerancesFool proofingDuplicate locationMotion economy31- Positioning the locatorsLocators should contact the work (preferably machines surface) on a solid and stable point:This permits accurate placement of the part in the tool &ensures the repeatability of the jig and fixture They should be placed as far as possible: This permits the use of fewer locators Ensures complete contact over the Locating surface2- Accuracy and ToleranceThe workpiece itself determines th
LOCATING PRINCIPLES To position the work piece w.r.t. to tool, to ensure precision in machining Locating: dimensional and positional relation-ship b/w work piece and tool
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