Page 26 - MMI_MarApr 2021 (high-singles)
P. 26
Source: Modern Machine Shop
With Collision Safe Guard, you import a part program simulation into the Pro 6 CNC; then CSG applies actual tool and workpiece offsets and looks ahead
in the program to discover any interference issues with the real-world setup. It then stops the machine before a collision occurs.
The com- Critical CNC functions for a full solid model simulation of quality surfaces while also re-
bination 3D machining the part program be done in an ducing cycle time.
of rigidity, It is this combination of rigid- application such as CGTech’s SGI can maintain high feed rates
speed, ac- ity, speed, accuracy and freer Vericut. Makino’s proprietary based upon a blend of chordal
curacy and cutting action that renders a Collision Safe Gaurd (CSG) then tolerance, block length, num-
freer cut- machining process much more takes that model a step further ber of points, look-ahead and
ting action capable of efficiently generat- and replicates the full simula- M-codes, establishing toleranc-
renders a ing surface blends and match- tion in the machine control, es to maintain higher feed rates
machining es with dramatic reductions in also considering the workpiece even during abrupt directional
process cycle time and post-machin- and tooling offsets and oth- changes in the tool path. Rather
much more ing finishing work. Howev- er physical setup alterations than having to program for the
capable of er, this increased machining made at the machine. The actu- worst-case scenarios, you can es-
efficiently speed and multi-axis freedom al workpiece, fixture, and tool tablish a faster feed rate and the
generating of movement create two new features (length and diameter) control will automatically com-
surface concerns. How do you reduce can easily be discovered with pensate where corners or inter-
blends and the risk of tool collisions at an automatic probing routine. sections could compromise the
match- high feed rates? And how do Then the software looks ahead accuracy of the cut. Or, in appli-
es with you manage the tool path so in the part program, and when cations using high-feed milling
dramatic that you achieve the quality collision points are detected, it techniques, this capability will
reductions surfaces that you think you shuts down the machine before better ensure the actual toolpath
in cycle programmed in CAM? Makino a crash occurs. is sustained at the programmed
time and addresses these concerns with SGI Smoothing — There are a va- feed rate.
post-ma- additional software features riety of factors that can mar the
chining available on its Pro 6 control: surface finish of a workpiece: Maintaining process
finishing Collision Safe Guard (CSG) — dwells, axis over-shoot/un- stability
work. Because of the dynamic nature der-shoot, sudden axis stops and It is one thing to machine to
of moving both the spindle and reversals, vibration and more. high standards under optimal
the workpiece in a five-axis Makino’s proprietary Super conditions, but quite another
environment, unintended tool, Geometric Intelligence (SGI.5) to do it all day long and over
workpiece, and fixture colli- software mitigates these con- extended periods of time. For
sions are a real danger. For this ditions by providing optimum successful medical machining,
reason, it is recommended that feed rates that generate higher that means achieving process
26 | March-April 2021 Modern Manufacturing India
