Overview of Magnetic and Electromagnetic Workholding Tools

This document provides detailed specifications, features, and applications of various magnetic and electromagnetic workholding tools used in machining, assembly, and related industrial processes.

1. Permanent Magnetic and Electromagnetic Chucks

These chucks are designed for securely holding metal workpieces during machining operations. They include permanent magnetic chucks and electromagnetic chucks with on/off switches for easy operation. Key features include:

• Strong holding power suitable for various metal parts.
• Multiple pole configurations and mounting hole options (e.g., M5, M6 screws, φ6 and φ8 shafts).
• Rotatable designs (up to 360°) and adjustable openings (up to 30 mm).

2. Flexible Magnetic Clamps and Vices (Models MPV Series)

These tools are auxiliary clamping devices suitable for machining, assembly, soldering, and holding irregular or nonmagnetic workpieces. Highlights include:

• MPV-MF30 Flexible Holder: Versatile clamping with multiple connection options, magnetic base with on/off switch, holding power of 784N (80 kgf), and mass of 1.4 kg.
• MPV-CL30 Flexible Clamp: Suitable for soldering and assembly, with powerful ON/OFF magnet, plastic clampers that tilt freely, max opening 28 mm, holding power 1000N (100 kgf), mass 2.7 kg.
• MPV-F50A Flexible Vice: Designed for temporary holding during filing, drilling, and tapping nonmagnetic materials, nylon plates for strong grip on irregular shapes, holding power 78N (80 kgf), mass 2.7 kg.
• MPV MAGVICE: Holds irregular or tapered workpieces using magnetic force without mechanical clamping, side slip resistance up to 575N, mass 7.3 kg.

3. Magnetic Nozzle Holders (Models NH Series)

Designed to hold nozzles at the end of cutting oil hoses on machine tools, these holders facilitate chip removal and coolant delivery. Features include:

• Flexible metal parts for stable positioning under high pressure and heat resistance.
• Strong magnetic base for secure mounting anywhere on iron surfaces.
• Flow rate adjustment via cock valve.
• Models vary by holding power (245N to 500N), hose length (390-420 mm), and number of outlets (1 or 3).
• Air and liquid pressure limits specified (e.g., 0.34 MPa air, 0.2 MPa liquid for flexible hoses).

4. Magnetic Dressers (Model MDR-1C)

Used for dressing grinding wheels, these magnetic dressers offer:

• Magnetic force of 800N (80 kgf) with on/off lever for easy mounting/dismounting.
• Adjustable mounting angles and clamp positions (side or top).
• Compatibility with magnetic chucks by powering off chuck and powering on dresser.

5. Magpad Devices (Models MP Series)

Magpads prevent wire breakage and workpiece dislocation during wire electric discharge machining by holding wire electrodes and cut pieces securely. Key points:

• Made of transparent acrylic with embedded powerful magnets.
• Strong holding power (80N to 250N) depending on model.
• Easy attachment/detachment without mechanical clamps, preventing damage.
• Durable, rust-resistant, and semi-permanent magnetic force.

Critical Parameters and Recommendations

• Holding power values are generally measured on SS400 steel with specified thickness and ground surface.
• Magnetic bases feature ON/OFF switches to facilitate safe and easy mounting/removal.
• Flexible components allow positioning and tilting to accommodate various workpiece shapes and machining directions.
• Pressure limits for hoses and air flow rates must be observed to maintain stability and prevent hose displacement.
• Optional and exchangeable parts (clampers, plates) enhance versatility for different applications.

Summary

The document comprehensively covers a range of magnetic and electromagnetic workholding tools, emphasizing flexibility, strong holding power, ease of use, and adaptability to various machining and assembly tasks. The inclusion of detailed dimensions, holding forces, and application notes supports informed selection and safe operation in industrial environments.