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Locating, Positioning, Jigs & Fixtures

Positioning and jig parts are auxiliary parts that accurately hold the position of the workpiece and guide the work position of tools, etc. Positioning consists of one that is on the fixed reference side and one that is positioned on the fixed reference side. Even with complicated shapes, accurate positioning is possible with appropriate jigs and restraining methods. There are two types of restraint methods: three-way restraint and two-way restraint. Three-way restraint includes three methods: positioning on a fixed surface, positioning on a hole, and positioning on an adjustment point / plane. The two-way constraint is used when only two directions are required, such as a round shape or a long shape, and positioning is performed on a fixed surface called a shoulder pad or by a V-groove. Types include plungers, index plungers, locating pins and bushes, positioning guide parts, etc. The plunger uses a spring and is used for positioning the die and drill hole.

Key Components in Positioning and Jig Assemblies

Locating pins are precision components that establish fixed positions between a workpiece and a fixture. Used in conjunction with bushings, they create highly repeatable and stable setups, essential in high-accuracy operations such as automotive inspection components or machining of molded parts.

Plungers and Index Plungers

Plungers and index plungers are spring-loaded devices used for indexing or securing a workpiece at a specific point. These are ideal for quick-change applications, clamping, and positioning repetitive tasks. Index plungers often come with a knob or pull handle for manual release and re-engagement.

Clamping and Stopping Elements

Components such as workpiece clamps, stopper blocks, and threaded stopper blocks are critical in applying controlled holding force and preventing unwanted movement during operation. These parts are designed for durability and precision under repeated cycles.

Adjusting and Guide Components

Adjusting screws, locating and guide components, and locating units offer fine-tuning of part alignment in jigs and fixtures. These are particularly useful when handling workpieces with slight dimensional variations or when fixture adjustments are needed during batch production.

Applications

  • CNC machining and milling fixtures
  • Automotive component inspection setups
  • Robotic assembly cells for precise part location
  • Manual and automated jigs in production lines
  • Drill guides and dies requiring precision indexing
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