C5, C5L

Accuracy

Sometimes accuracy is defined in terms of resolution, but they are not the same.  What  accuracy really means is how closely the carved shape follows the contours of the CAD file.  Accuracy depends on several factors including resolution, calibration accuracy, servo error bands, tool path algorithms, and mechanical alignment of the axes of motion.  The c5 has a resolution of .00005 inches (0.001 mm), but resolution by itself doesn't mean very much without consistent calibration. The c5 consistently autocalibrates within .0005 inches (0.01 mm). Next we must consider servo error bands.  When the motion processor commands the servo motor to move, it allows a specified amount of time to complete the move.  Servo motors can not complete moves instantaneously, although it might seem like they do. Therefore, the motion processor must allow some positional tolerance for each move.  Accuracy is also influenced by the precision of the tool path algorithm in the carver software.  Finally, the axis of rotation of the carving blank must be parallel with the carver’s long axis, or the volume of the carved shape will not match the volume of the carving file along its length.  A Provel c5 Carver will cut within .010” (0.25 mm) of the specified shape.

AOP

An O&P industry file format for the  creation of socket models, cover shapes, and TLSO’s.  All O&P CAD software has the ability to import and export AOP files.  The d2 digitizer and c5 carver work with AOP files.  Sometimes referred to as AAOP files.

Provel Carve

Provel Carve allows the user to configure and send an AOP file to a Provel carver.  The user can specify the blank size, uncarved length, a transition zone, and a check ring if desired.  Provel Carve graphically depicts the carve chamber, the blank, the mandrel, the carved shape, and other user specified additions.  The shape data is sent to the carver over a serial port.

Embedded Microprocessor

The c5 has a built-in microprocessor that takes the place of a dedicated onboard computer without the vulnerability of an onboard PC. Eliminating the onboard computer also avoids the need to update it’s operating system every couple of years and the inevitable obsolescence of the computer itself.  The c5 does not require a dedicated computer, regular on-line check-ins, or annual upgrade fees.

Quiet

The c5 is quieter than carvers with conventional vacuum systems.  Instead of an external vacuum system, the c5 uses quiet, built-in fans and blowers to create negative pressure in the carve enclosure to keep dust in, and positive pressure in the equipment enclosure to keep dust out.  The chips fall into the waste bin with most of the dust.  Remaining dust is captured in an easily cleaned filter in the carve enclosure.  From 3 feet away,  the c5 sound level is 76 dB (A scale) when cutting 2 inches deep in 4 lb density rigid urethane foam.  For comparison, a vacuum cleaner measured at three feet is a common reference for 80 dB.  Sound levels above 85 dB are considered harmful with prolonged exposure.  Every increase of 10 dB represents an increase of 10 times the sound pressure and will be perceived as twice as loud.

Maintenance

Maintenance includes cleaning the carving chamber filter and periodically vacuuming the chips off the bellows.  Cleaning frequency will vary from daily to weekly depending on use.  The ball screws should checked annually for lubrication and receive oil as needed.