The Industry's Most Thorough Testing Process

Before leaving the plant, the typical Haas CNC machine is subjected to more than 300 quality-assurance tests, including up to 168 (24 x 7) hours of actual running time while in Assembly. In fact, whenever a machine is not physically being worked on, it is running pre-programmed tasks to check operational tolerances and performance parameters.

Quality assurance follows each individual part from initial fabrication through subsequent installations. Static and operational testing continue as each component subassembly is added to the main assembly, providing a paper trail of certification through the entire assembly, testing and shipping process.

100% Ball Bar Tested Before Shipping

Haas uses a state-of-the-art ball bar system from Renishaw to check not only linear accuracy, but also machine geometry. This ensures the three-dimensional squareness and accuracy of every machine. This operational test is done with a bar that tracks machine movement to ± 0.5 micron and has 0.1-micron resolution. The bar is attached to the spindle and to a fixed point on the table. Then the machine is put through a series of circular moves in the X/Y plane to certify synchronous movement, and a series of half-circle moves in X/Z and Y/Z planes to verify squareness.

Linear variable differential transformer (LVDT) data from the bar is fed into a computer which outputs a chart illustrating machine accuracy. Any deviations in squareness or length show up on the graph as distorted circles that are very easy for a technician to spot. A copy of this chart is included with each Haas as our assurance that your machine is accurate and properly aligned.