Northfield x Methods Video
Custom Air Collet 1
Custom Air Driven Northfield Collet Set-up
Custom Air Collet
Northfield 16c Collet Chuck
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Custom Collets – Air vs. Hydraulic

 

Collaborating with the finest in machine tool productivity innovation.  

Northfield x Methods Video
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Brief: 

The task is tooling up a standard dual head rotary table to accommodate the bolt carrier.

Challenge:

The challenge of this job is to provide a work holding solution, allowing actuation of the work holding on the customers table.  

Custom Air Collet 1
Custom Air Driven Northfield Collet Chucks
Custom Air Collet
Northfield 16C Collet Chuck

Northfield Solution: 

The Northfield 16C collet chucks are air driven units as standard. Pairing these with an adapter plate and air tube allows actuation on the customers rotary table. Additionally, these chucks allow the usage of standard 16C collets. 

Air vs Hydraulic: 

These chucks are also available in a hydraulic format. This same setup has been supplied to other manufactures with a hydraulic configuration. Providing a greater grip force than our air driven units. This is useful when heavy milling or turning operations require a higher grip force capacity and the material being held supports such a setup.  

Sound useful? Then reach out – TOLL FREE: (800) 810-2482

Contact Northfield – Northfield

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Lathe Finish Turning

Our customer is an OEM manufacturer of welding equipment.

Brief

The work holding requirement is for a lathe. Our customer needs a chuck that expands to grip the inner diameter of welding shield caps so they can finish-turn its rough outer shape.

Northfield Solution

A Highly-Specialized, 4.500” Diameter Northfield Collet Chuck
A Highly-Specialized, 4.500” Diameter Northfield Collet Chuck

Shown here is a highly-specialized, 4.500” diameter, Northfield Collet Chuck with custom top tooling mounted.

As the chuck’s internal diameter collet expands, it also acts to pull the part down and onto its outer banking surface shown in the photo at the right. This insures repeatable location onto the datum surface, saving time and reducing error.

This is just one of many examples of our work across a variety of industries and machining situations. Do you have a project that requires a custom solution? Then get in touch with our team and chat with a Northfield engineer to see how we can help solve your problem. Contact Northfield – Northfield or call – Phone: (516) 431-1112.

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Internally Gripping - Automotive Drilling

Custom automotive drilling work holding A drilling solution custom designed for the automotive industry. Based on hydraulically actuated, internal grip collet chucks.

Eight of these chucks mount on a pallet in a vertical machining centre, gripping automotive parts for drilling. The chucks are 76mm in diameter but deliver up to 544 kg. of draw force.

Custom automotive drilling work holding

Northfield Collet Chucks repeat to 1/10,000 T.I.R and pull the part onto the centre hard stop.

Does this sound like something that you would be interested in? Get in touch to discuss your next project with Northfield.

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Internal Spline C.V. Chucks

Recently at Northfield we produced a custom internal grip collet chuck for balancing drive shafts.

Custom_Internal_Grip_Collet_Chuck

 

 

 

The collet on this chuck grips the pitch diameter of splined C.V. joints of a driveshaft assembly.

 

 

 

Internal_Grip_Collet_Chuck_Disassembled

 

 

  • The ‘cone’ has multiple stop pads for axial location.
  • Tapped holes balance the chuck assembly prior to production.
  • The chuck repeats to less than 0.005mm total indicator reading (T.I.R.).

 

Northfield is the world’s premier manufacturer of ultra-precision balance chucks for prop shafts, with chucks that weigh less than half of our competitors. We are also the only chuck supplier recommended by major balance manufacturers.

Northfield Balancing Chucks Feature

  • Highest accuracy
  • Highest RPM
  • Shortest hung mass
  • Fastest & most accurate change over

Interested to know more? Reach out…

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Getting to the ‘Heart’ of the Problem

Brief:

A Biomedical engineering customer set Northfield the following brief. To create chucks to hold heart valves, after coating, to finish grind. They were required to have multiple small internal grip collets and stops to allow fast tooling change over.

Challenge:

The small collet sizes and stop pads made this job unique. We were asked to hold the internal diameter of small multiple sized parts for a finish grinding operation. The internal diameters ranged from .305in (8mm) – .575in (14mm). We were also asked to locate datum that was inside the part on a small banking area.

The varying expansion range of the collet was an additional challenge. The customer part had a coating on it for which there was no set thickness. To solve this, we worked with the customers tolerance range and allowed the collets to expand approximately .040in (1mm) in diameter to allow for this coating variance.

Solution:

Three things were key:

  1. Accuracy
  2. Repeatability
  3. Quick change over times

Our customer has many different part sizes and they wanted minimal down time when switching to a new setup. They could not be happier with the setup and are thrilled with how the project continues to produce accurate parts.

Do you have a unique working holding requirement? Then get in touch now. Our sales team are always available to answer your questions. https://www.northfield.com/contact/

About:

 

Northfield Precision Instrument Corp.: Northfield is a custom workholding solutions company based in Island Park, New York. Founded in 1952, Northfield designs and produces the most accurate custom chucks in the world, guaranteed from 0.0001″ (2.5µ) – 0.000010″ (0.25µ). Northfield supplies a global customer base across, automotive, aerospace and medical industries.

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Medical Precision and Customization

Medical Engineering

Always looking for a chance to innovate, the Northfield team were excited to bring their years of work holding expertise to the medical industry, creating parts for joint replacement.

Brief:

Deliver the appropriate tolerances requested, including: concentricity, accuracy, and repeatability from part to part. Achieving
this was the priority whilst allowing easy operation and quick tooling change overs.

The Northfield team created two separate solutions:

Custom_Collet_Chuck

  • Secondly, a ‘Power Block’ for holding multiple knee-joints simultaneously with a very specific grip force. Also, allowing clearance for the milling tools and part sensing ports. This allows the machine to acknowledge that parts are correctly loaded and ready to be manufactured.

custom_air_chucks

Challenge:

1. Holding the half sphere shoulder parts from the inside with only a minimal surface area, to allow the finishing operation on the outside.

2. The knee joints required custom air chucks to clamp various part sizes at the same time for finish milling.

3. Ensure the correct jaw force was applied to the delicate parts throughout the entire process.

Solution:

1. Northfield offers a large range of standard precision collet chucks, that grip a part internally. This job was unique as we developed a special contoured collet with a specific shape. Finish milled to enable holding several different part sizes. We also added a locating surface that uniquely has a small surface area, although robust and accurate enough to allow a long tooling lifetime.

2. Four different sized parts need to be held at the same time, therefore multiple Northfield chucks are in use simultaneously. Our customer wanted to finish the second operation of all the parts at once, achieved by creating a base plate with easy air porting.

3. Finally, we also delivered a force analyser that works together with our custom tooling, creating a turn-key solution with specific grip force.

 

Do you have a special working holding requirement? Our sales team are always available to answer your questions. https://www.northfield.com/contact/

 

Northfield is a custom work holding solutions company based in Island Park, New York.