Jigs and Fixtures Overview

A type of lathe that allows multiple tools to be mounted and automatically indexed for machining.

The arrangement of tools on a machine to enhance efficiency and operations.

Machines designed for automated turning processes without manual intervention.

Specifications defining the acceptable range of dimensions for parts.

Permissible variations in dimensions that ensure proper fit and function.

Tools used to measure or check dimensions to ensure accuracy of manufactured parts.

An assembly process where parts are sorted based on their limits to ensure proper fits.

Devices used to measure whether a part meets specified dimension limits.

A pin used for workpiece location in jigs.

The specified size of the workpiece, plus tolerances.

The main hole for cylindrical location using a full pin.

A pin used to constrain workpiece pivoting.

A locator designed to accommodate variations in one direction.

Tools that hold pieces in place during machining.

Surfaces that enable accurate and repeatable positioning.

A workpiece can be fully located using one hole by securing one principal location and using two pins for radial movement.

Pin A secures the principal location of the workpiece for accurate positioning.

Two pins restrict radial movements, minimizing deviations from the true location.

Positioning radial locators far from the axis minimizes angular error due to displacement.

A small displacement at further distance results in smaller angular error compared to a closer distance.

V-location is a method for locating circular or semicircular workpieces using a Vee block.

The specific positioning of a workpiece during machining operations to ensure accuracy.

The principle that greater distances from axes reduce angular errors in workpiece positioning.

A method for locating shaft-type workpieces using hardened steel bushes.

Specialized fittings used for holding workpieces securely in jigs and fixtures.

A type of bush with a flange that prevents it from falling out of the jig body.

An angled edge on bush entrances to ease loading of workpieces.

A reference surface used for measurement in machining processes.

Design feature that prevents swarf from misaligning workpieces during machining.

Establishing a reference surface early is crucial for accurate machining.

Keep locating surfaces small for easier cleaning and maintaining alignment.

The force required to securely hold a workpiece in place during machining.

The opposing force exerted by a workpiece against the clamp during operation.

The force per unit area exerted by the clamp on the workpiece.

Tools used to hold workpieces securely during machining.

Devices used for light clamping applications, ensuring secure fit.

A simple clamp suitable for light work that's easy to use.

A reliable clamping device using a spring-loaded nut for force application.

Clamping devices that use a lever mechanism to apply force effectively.

A clamp that uses a hinged latch to secure workpieces, facilitating easy loading and unloading.

A clamp where the latch operates using a cam mechanism, allowing for quicker adjustments than a bolt type.

Clamping devices that work rapidly, helping to reduce operating time, despite higher initial costs.

Mechanical clamps shaped like a 'C' used to hold workpieces together, can be free or captive.

A C-clamp type that allows complete freedom of movement when unclamped.

A C-clamp with a locking mechanism that keeps the clamped item secured until deliberately released.

A nut that secures a C-clamp in place, requiring unscrewing to release.

Workpieces that maintain precise measurements for compatibility with machinery or fixtures.