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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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Custom Parts, Custom Colors

No, we’re not making a fashion statement for chucks here!

At Northfield, we affectionately refer to the aluminium anodized chuck as “BIG RED”. Creed Monarch use “BIG RED” to manufacture close tolerance parts for Robert Bosch Power Tools.

We designed “BIG RED” to accommodate the unusual shape of the ‘Wobble Plate’ part of the drive mechanism in a Bosch reciprocating saw. Improving accuracy and dramatically reducing change over time.

Northfield custom work holding, model 'big red'
Northfield custom work holding, model ‘big red’

The “Wobble Plate” is made from 52100 tool steel and heat-treated to 58/63 Rockwell. Spinning at 3,500 rpm for hard turning the “Wobble Plate” internal diameter, creates the outer race of a bearing set.

“BIG RED” is a example of our custom work holding at Northfield beyond the chuck.

  • The spring-loaded plunger and locator ensure accurate locating of the “Wobble Plate” to four specific reference points.
  • When hand mounted on the face of a fixture, the unique design provide repeatability of 0.002 inches.
  • The fixture allows automatic operation after the initial loading.

“BIG RED” solved previous holding problems and saves a tremendous amount of production time.

Do you have a special work holding need that we could help with? Get in touch now.

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Custom Full Wrap Jaws

Custom clamping jaws, developed for a vertical machining environment. A Northfield 650 air chuck has been adapted to work with custom jaws.

FullWrap_Jaws_Clamping_Air_Chuck

The ‘pie’ shaped top jaws provide a full wrap clamping around the work piece. This project also includes a custom spring loaded locating pin assembly. Designed to orient the customer’s workpiece allowing fast and accurate change over.

Can we do the same for you? Reach out and an engineer will be in touch to collaborate on your next project.

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Plastic Tooling - Ceramic Grinding

Brief & Challenge:

Our customer manufactures delicate ceramic rings. They needed a way to carefully hold them on the outer diameter so they could grind the inner diameter. In order to protect the parts, they requested the chuck had no metal contact points.

Ceramic_workholding_Grinding_Chuck

Solution:

We produced a 6” Diaphragm Chuck with non-metallic top tooling in contact with the customer’s part. The top tooling, made from the most abrasion-resistant plastic available can be quickly changed, for new ones, should a future need arise.

Northfield Precision Instrument Corporation is a leader in developing custom solutions for difficult work holding problems. Click here to get in touch.

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Northfield Pressure-LokTM Chucking System

Our recent product introduction, the Northfield Pressure-Lok TM Chucking System is an air chucking system that works without the air tubes and hoses.

Northfield Pressure Lok Chuck
Northfield Pressure Lok Chuck

The Pressure-LokTM air chuck once charged with air pressure can hold pressure for up-to 3 weeks! Ideally implemented in machining operations that do not have access to a continuous supply of air.

The quick connect fitting is compatible with all Northfield chucks. The air pressure can be altered between 5 & 80 P.S.I. to adjust the grip force as required, improving the flexibility offered by spring clamping alone.

Northfield Pressure Lok Chuck
Our model 450 (3-Jaw) Air chuck with .0001 T.I.R.

Email sales@northfield.com to learn more.

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Custom Diaphragm Chuck for milling precision gears

Every week exciting new projects are heading out the door, such as this Custom Diaphragm Chuck for milling precision gears.

Brief: The customers work piece is a small precision gear that requires milling on one face, timed to existing geometry.

Challenge: The outer diameter of this gear could not be touched so it needed to be gripped on the root diameter.

Solution: A Northfield DPH-400 (.00050” T.I.R.) 4” diameter diaphragm chuck was provided, with sub jaws, changeable inserts and stops for different sized work pieces.

  • The inserts are wire cut to clear the major diameter and clamp on the root diameter.
  • Changeable stop pads have timing pins, to orient the work pieces prior to clamping.
  • The base stop has a ground indicating band for initial setup.
  • The chucks ‘pull-back clamping’ action ensures the part is seated flat.

 

Don’t forget you can also follow our most recent projects on LinkedIn.

 

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/