Milling

Our Story

CNC milling is an extremely versatile machining process.  It’s the use of multi-axis movements used in tandem with the diversity of tooling options which makes this process so valuable to our organization.  We routinely machine complex geometries which require multi-axis contouring with deep pocketing, tight tolerances and critical surface finishes in our mold manufacturing operations.  We are also very adept at designing custom work holding fixture systems in volume production operations. These operations, coupled with in machine real time part probe inspections, allow us to provide a wide arrange of CNC milling solutions.

Technical Information

Machining Services
CNC Sawing CNC Engraving Metal Plating
CNC Turning CNC Broaching Metal Painting
CNC Threading CNC Deburring Comparator Inspections
CNC Knurling CNC Drilling CMM Inspections
CNC Milling Metal Polishing Heat Treating
CNC Boring Volume Production Machining Materials Sourcing & Purchasing
Work Envelope

X= 64

Y= 32

Z= 30

Max Weight

4000lbs

Machining Axis

2 AXIS

3 AXIS, FULL CONTOURING

4 AXIS, FULL CONTOURING

5 AXIS, FULL CONTOURING

Materials

Plastics

  • Polyurethane
  • Polytetrafluoroethylene
  • Polycarbonate
  • Polyvinyl Chloride
  • Acetal (Polyoxymethylene Delrin)
  • Polymethyl Methacrylate
  • Acrylonitrile Butadiene Styrene (ABS)
  • Polyetherimide
  • Fiberglass
  • Polyether Ether Ketone
  • Polyethylene

Metals

  • Aluminum
  • Bronze
  • Copper
  • Brass
  • Steel
  • Magnesium
  • Stainless Steel
  • Zinc
  • Titanium
Tolerances

+/-.0005

Programming/Tool Pathing

To effectively operate a CNC milling machine, tool paths must be created to define the cutting path for the tooling. 

The goal of programming a CNC machine is to enable a machine tool to achieve automatic, precise and consistent cutting motion. To do this properly, the CNC requires a set of programming instructions call G codes which are a set of X,Y & Z  coordinates which tells the machine how to machine the part.   We use the Mastercam CAM system for programming our molds and finished parts.   This process is performed by using the 3D model created in SolidWorks, then selecting the surfaces of the model and defining the tooling and the path each tool will take in the machining process.  The CAM system will output a video of the toolpath to machine part.

Mold Base Programming

High Speed Machining

High Speed Machining

This video is the result of the programming CAD /CAM video seen above. Machining operational cycle times have been optimized thru revisions in the feeds and speeds of each step along with specialized tooling including thru spindle drilling to allow for increased drilling speeds.

In-Machine Probe Inspection

Renishaw probe inspections are a valued added step in the CNC machining  process for higher volume production machined parts. Custom macros are created to monitor tool wear and finished tolerance of each machining step in the process.  This allows for in-process control over tolerance and greater machining accuracy on part to part tolerance.

Machine Parts Probe Inspection

High Speed Plastics Milling

High Speed Plastics Milling

Precision Urethane has a large selection of tooling and machines to machine a variety of plastics and elastomers.  For lower volume parts, it can often be more economical to machine them from standard shapes, as opposed to molding them to size.