Silicon Valley Precision, Inc.

• Overall Part DimensionsLength: 69.19" Width: 19.69" Height: 11.85"
• Tightest Tolerances+ 0.002" / - 0.000"
• Material Used6061-T6 Aluminum

Machining utilized our state of the art vertical bridge machining centers for large part manufacturing. This included our 3 axis Awea VP2012 with high precision contour control and 77" x 47" x 34" work envelope, our SNK RB2NM with its 107" x 66" x 48" work envelope and 5 face and probing capabilities. Composed of 6061-T6 aluminum, this large scale project required tolerances as tight as +0.002 -0.000". The finished dimensions were 69.19" long x 19.69" wide x 11.85" high, with a smooth 63 RMS finish. After machining, the part was deburred and 50 keenserts of various sizes were installed.

• Overall Part DimensionsOD: 14" Length: 36"
• Tightest Tolerances+/- .005"
• Volume1

We were recently contracted by a utility customer to custom machine the chain hoist drum highlighted here. It was designed to hoist a floodgate for their Wishon dam facility, and exemplifies our ability to precision machine large components with quick turnaround times. Silicon Valley Precision was contracted to perform all of the required work, utilizing our cutting edge 4 axis Awea VP2012 machining center and rotary table to perform the CNC milling. The drum is composed of 4140 steel round stock with finished dimensions of 36" in length and an outer diameter of 14". This part was machined using the 4th axis to produce the helix and using the 3 axis motion to ball mill the cross section of the helical groove. This part was produced to a Tolerance of +-.003"

• Overall Part DimensionsLength: 6'-2¼" Width: 5" Thickness: ¾"
• Tightest Tolerances+/- .005"
• Material FinishMill Finish

This project posed a number of aesthetic and structural demands, including the accommodation of multi-directional pedestrian traffic as well as being ADA complient. We were able to creatively manufacture this large part to the specialized design criteria using our advanced SNK RB2NM 5 face bridge type machining center, with a custom built blade system to cut the 135 grooves .125 dp x .125 wide x 58" long. The hot rolled, annealed, and pickled 304L stainless steel was milled to a finished dimension of 6'-2¼" long x 5' wide x 34" thick, while holding the tightest tolerance of ±0.005". The part was then deburred, A U channel welded on the bottom, cleaned, and packaged for shipment.