jig grinding manufacture

Jig grinding is a precision machining process used to produce highly accurate holes, slots, and complex geometries in hardened materials, often for tool and die manufacturing, aerospace components, and medical devices. Here’s an overview of jig grinding manufacture, including key manufacturers, machines, and applications:

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Key Jig Grinding Manufacturers
1. Mitsui Seiki (Japan/USA)
– Known for high-precision jig grinders like the J3G and J6G series.
– Used in aerospace, mold/die, and medical industries.

2. Moore Nanotechnology Systems (USA)
– Specializes in ultra-precision jig grinders (e.g., Moore G18).
– Focus on optics, semiconductors, and micro-machining.

3. Hauser (Switzerland, part of Hardinge Group)
– Models like the Hauser S35/S40 for tight-tolerance grinding.
– Common in European toolmaking.

4. Okamoto (Japan)
– Offers jig grinders for die/mold applications.

5. Doosan (South Korea)
– Provides CNC jig grinding solutions for industrial use.

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Jig Grinding Machines
– CNC Jig Grinders: High automation with sub-micron accuracy (e.g., Mitsui Seiki J6G with 0.1µm resolution).
– Manual Jig Grinders: For smaller shops (older models like Moore #450).
– Multi-Axis Machines: 5-axis capabilities for complex contours.

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Applications
– Tool & Die Making: Precision holes in molds/dies (e.g., injection molds).
– Aerospace: Fuel system components or turbine blades.
– Medical Devices: Surgical tooling with micron-level tolerances.

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Process Considerations
1. Material: Typically used on hardened steel, carbide, or ceramics.
2. Accuracy: Achieves tolerances within ±0.0001″ (2–3µm).
3. Coolant: Oil-based fluids to prevent thermal distortion.

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Emerging Trends
– Integration with CAD/CAM for complex geometries.
– Hybrid machines combining grinding and milling (e.g., Mitsui Seiki’s multi-tasking machines).

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