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5-Axis Machining in Two Steps

High precision custom work holding, finishing all part machining operations in only two setups. Reducing error and saving time. 

Brief:

Our Customer is a well-established high precision machine and automation provider. They required a custom solution to complete all machining operation in two steps.  

  1. Work holding on a rotary table within a 5-axis machine.  
  2. A chuck with custom hardened jaws to grip the finished side of the work piece from the first step. 

Read on to see how the Northfield engineers solved this problem… 

Custom Air Chuck 5-Axis Machining
Northfield Precision Model 450W Sliding-Jaw Air Chuck (0.0001” TIR) with custom top tooling attached.

Northfield Precision Model 450W Sliding-Jaw Air Chuck (0.0001” TIR) with special top tooling attached
Northfield Precision Model 450W Sliding-Jaw Air Chuck (0.0001” TIR) with custom top tooling attached

The first chuck is based on the 450W Sliding-Jaw Air Chuck, for mounting to a rotary table for 5 axis machining of the first portion of the final product. 

The custom top jaws are hardened and ground to size before coating with 150. Grit diamond. This ensures a good grip on the customers rough turned blank. 

Additionally,  

Northfield work holding solutions include air detect axial locators. This in this case, 3 air ports on the 3-part banking surfaces. Ensuring positive, part seat confirmation before the machining process begins. 

Step 2:

Northfield Precision Model 470W Sliding-Jaw Air Chuck (0.0001” TIR) with custom top tooling attached.
Northfield Precision Model 470W Sliding-Jaw Air Chuck (0.0001” TIR) with custom top tooling attached.

Northfield Precision Model 470W Sliding-Jaw Air Chuck (0.0001” TIR) with custom top tooling attached.
Northfield Precision Model 470W Sliding-Jaw Air Chuck (0.0001” TIR) with custom top tooling attached.

The second stage of the process involves gripping the finished side of the part from the first step without damaging, to finish the second step.  

To accomplish this, we added custom hardened and ground sub jaws to a Model 470W Sliding-Jaw Air Chuck. These hold specially Electro Discharge Machined (EDM) inserts, designed to grip the finished side of the part produced in first machining operation. Additional machine clearance was required at this stage, so the chucks are also mounted to custom Vertical base plate risers. This accommodates for the machine clearances. 

Finally, this chuck also includes a special air detect axial locator, with 1 air port on the part banking surface, for positive part seat confirmation.  

 

Are you looking for a custom work holding solution that includes a collaborative design process? Then get in touch today and discuss your projects with the Northfield engineering team.