The Newbould Grindit
Motorized Spin-Grinding Fixture for Installing Radii and Angles
Top Side Shotpin: Allows for lock-in indexing every 15 degrees, repeatable within 10 arc seconds.
Adjustable Stops: Two adjustable stops are standard, adding additional stops more than 30 repeatable angles can be used with one setup.
Zero Null Benefit: Loosening 4 socket head cap screws on rear of the unit allows a +/- 8 degree adjustment from zero setting.
Spindle: Is guaranteed to 50 millionths TIR for one year from date of purchase; the face plate is guaranteed +/- .0003" square over 3-3/4"
The V-Block: The V-Block is precisely ground to fit the particular fixture. A .0004" variance allows sideways maneuvering between the keys. A 1/4-20" hole at the bottom of the V allows for working without a clamp.
5C Insert: Standard 5C Insert is ground to fit the particular fixture; the serial number of the Grindit is ground into the insert.
Submersion: Can be safely submerged in to EDM fluid by attaching an air regulator into the grease port and supplying 2 pounds of air pressure.
Motor: 1/15 hp variable speed, reversible 1800-rpm motor produces a zero to 400-500 rpm spindle speed of the fixture.
Specifications:
Spindle Roundness 50 millionth TIR
Deflection +/- .0003" 3-3/4" Out
Topside Shotpin 10 arc-second repeatability
Center Height 3.004" +/- .002" from bottom
Thru Hole 1-1/4" plus
Weight 14 lbs
Base Size 3-1/2" x 4"
Height 5"
Bottom Holes 2-1/2" centers
Material Available in A-2 or 440C Stainless Steel
V-Block Capacity 1-1/2"
Distance Between V-Block Keys 2.600 + .0002"
V-Block Width 2.600 - .0002"
Available Accessories:
Precision Three Jaw Chuck
4" Magnetic Chuck
Quick Mount Adapter for Magnetic Chuck
Submerge Drive
System,
Cog Belt Drive
Pressurization Kit
Providing World Renowned
Precision Fixtures Since 1992
Manufacturer of Toolmaker Fixtures for
Spin Grinding and Installing Angles
Who We Are
Imperial Newbould Inc., is a precision manufacturer of spin fixtures AND a complete one-stop Job Shop specializing in CLOSE TOLERANCE grinding, precision CNC Milling & Turning and Wire EDM.
A Century of Excellence
We are the manufacturer of the world renowned Imperial Newbould Indexer, Grindit and Flatspin and have over 100 years of combined tool making experience. The original company was founded in 1966 by Kenneth T. Gunn and is now second generation owned and operated by K.C. Gunn.
Our Newbould Products
We Serve Nationwide!
We send our products all across the nation! Call us now or fill out a form to get a free quote.