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Haas machines can reduce your cycle times by utilizing this true high-speed machining algorithm. The High-Speed Machining option allows faster feedrates and more complex toolpaths, without hesitation or starving the machine.
High-Speed Machining (HSM) is a software feature that reduces cycle times, and at the same time, increases the quality of the surface finish. HSM reduces cycle times on:
The high-speed motion control algorithm achieves high speed mainly by calculating the angle of intersection between linear and/or circular motion strokes, and maintaining maximum possible velocity through the stroke transition. This must be done well in advance of actually executing the motions, so that abrupt changes in direction can be accommodated in the velocity profile, without violating acceleration restrictions.
The greater the change in direction, the lower the velocity must be at the motion transition, down to a minimum velocity of zero for a direction change of 90 degrees or greater.
Acceleration before interpolation is an algorithm used by the machine to move at the programmed feedrate longer, while accurately cutting the desired path.
Without HSM, the machine accelerates from zero at the beginning of a block of code, and decelerates to zero at the end of a block of code. The machine may never reach the programmed feedrate for short blocks.
With HSM, the control looks at the angle between two blocks of code and computes the optimum acceleration and deceleration to navigate from one block to the next. This keeps the machine at the programmed feedrate longer.
High-Speed Machining uses an 80-block look-ahead function to plan the path, and can process at a speed of up to 1000 blocks per second. That is 1 block every millisecond (1/1000 of a second). This assumes no change in direction or velocity are needed to stay on the programmed path, which is not realistic.
Another function in HSM combines extremely short strokes (less than .0002" or .005 mm) with the previous block or the next block when the change in direction is below a specific limit. This allows the machine to execute smaller strokes – like those often found in dynamic/high-efficiency milling – without a dramatic reduction in velocity, or deviation from the toolpath.
In order to maintain smooth, fluid motion, your program should not contain code that takes less than one millisecond to execute.
Return on Investment example:
Part cycle time without HSM = 86 Sec
Part cycle time with HSM = 69 Sec = 20% faster
Difference: 17 Sec
Parts per hour without HSM: 42
Parts per hour with HSM: 52
Shop rate: $60/hr, 40 hrs per week
40 hrs X 20% = 8.0 hrs/wk saved X $60 shop rate = $480 savings/wk
Pay back time: 1.3 months
If you would like more information about how a new Haas machine can bring your products to life, please share your contact information.
HSM lets your mill cut at maximum feedrates where possible, while slowing just enough, where necessary, to make sure complex part geometry is maintained.
All prices and specifications subject to change without notice. Freight, rigging, state & local taxes, vendor installation charges, and dealer installed accessories are not included. Not responsible for misprints or typographical errors. Machines shown with optional equipment. Actual product appearance may differ.