What is CNC Machining?
CNC stands for Computer Numerically Controlled and refers to a manufacturing machine computer interpreting code to control a power tool which fabricates by selectively removing material.

Custom fixtures are designed by our talented design-engineering department and built by our experienced toolmakers for our CNC Machining department. CNC programmers will use the CAD information provided by the design team to produce high-volume and low-volume runs of CNC machined parts. Production happens in our state-of-the-art CNC Equipment to our customer’s custom specifications.

CNC Machining is fully integrated into the die building process at Winthrop Tool. Intricate components are made to specifications utilizing CAD files uploaded directly from our Engineering department to the CNC programming center. Our CNC department runs 24 hours a day, Seven days a week, and is fully integrated with our Quality Control Department to assure that all features and part dimensions meet specifications. All production jobs are monitored in real-time by utilizing in-process SPC data collection. Winthrop Tool will also handle your custom packing and delivery requirements where required.

Our Precision CNC Turning centers specialize in producing complex parts with tight tolerances. We can produce components from .0625" to 6" in diameter utilizing stainless steel, aluminum, titanium, and most other alloys. All of our CNC Lathes are equipped with production bar feeds to maximize speed and accuracy. Allow us to review your CNC Turning project today.

Winthrop Tool utilizes Vertical CNC Machining Centers to produce production parts of various materials in high volume, low volume, and prototype quantities to specification. Our Precision CNC Machining department also produces tooling and fixture components to support our in-house tool room and our customer needs. CNC Machining of blocks, sheet metal, and tubes is done with accuracy and precision at Winthrop Tool, made possible through the use of the latest 3D CNC machining systems and CAD/CAM software. We can manage your project from start to finish.



What is Wire EDM?
Wire EDM is a cutting operation that utilizes a Computer Numerically Controlled and electrically charged brass wire to “burn” through a raw block or stack of material, producing an extremely accurate cut and clean finish suitable for aerospace and medical applications.

Winthrop Tool has the capability to manufacture production parts and tooling components of tight tolerance by utilizing Wire EDM. We specialize in production runs of precision components and tube cut offs, creating fixtures, building spare tooling for metal stamping dies, and sharpening shaped die components.

Winthrop Tool has been utilizing Wire EDM since 1984. We use Wire EDM for customer contract work as well as our internal requirements. Winthrop Tool can assist your company with its Wire EDM needs from design assistance to final completion. Fixtures used for production runs are designed by our talented Design Engineering Team and built by our experienced toolmakers. Our programmers use CAD information to produce high-volume and low-volume Wire EDM parts in our state-of-the-art Wire EDM machines and to our customer’s custom specifications.

Wire EDM at Winthrop Tool is a core component of our Tool & Die maintenance and repair capabilities. Our Wire EDM department supports our Maintenance Department by providing sharpened or replacement tooling components in order to repair a worn or damaged tool. All jobs that enter our Wire EDM department are analyzed by our Quality Assurance Department to ensure that all dimensions are correct and geometries have been met. Blocks are checked for squareness and absolute size. In-process SPC data collection is utilized to maintain quality in production modes.

We currently run ten 4-axis machines capable of wire diameters from .004" to .012." Our machines have a cuttable travel (XYZ) of 20.5” X 14.5” X 12.0 and minimum corner radius of .0023 as necessary. We have the capability of working with material in our machines up to 2200 pounds. Wire EDM machine accuracy to within .0001” repeatability to .00005.” Winthrop Tool also has one CDM Drill which allow holes to be drilled as small as .012’’ or as large as .250’’with a maximum work piece height of 8.0”



Surface Grinding
Surface Grinding is a manufacturing process which moves or grinding wheel relative a surface in a plane while a grinding wheel contacts the surface and removes a minute amount of material, such that a flat surface is created. The term “surface grinding” designates any process which accurately processes or grinds a surface.

Surface grinding methods include: horizontal-spindle, vertical-spindle, vertical-spindle rotary grinding, horizontal spindle single disk, and vertical swivel head grinding. Parts may require surface grinding for several reasons. The following are a few of the more common reasons:

• Produce a very flat surface.
• Very accurate thickness tolerance specified.
• A very smooth surface roughness Ra is specified/required.
• Cutting tool sharpening.

Surface grinding machines and processes where first developed to to manufacture very tight tight tolerances, smooth surface finishes, and removing material from very hard materials