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Fast Tool Servo FTS 70 300 g’s
Fast Tool Servo FTS 500 20 g’s
Fast Tool Servo FTS 100020 g’s
The Fast Tool Servo ( FTS ) is used for rapid manufacture of small departure (up to 1000um) freeform components and micro-structures. A FTS includes a short stroke actuator which holds a diamond tool and mounts onto the Z-slide of a lathe. The actuator is driven by either a Piezo electric stack or linear motor with closed loop position feedback. With the use of a dedicated digital signal processor, the tool position is calculated and commanded in real time based upon the rotational position of the work spindle and position of the slide. The command is sent to the FTS controller, which closes the servo loop and moves the tool appropriately.
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Temperature Controller
This unit re-circulates, filters, and controls the temperature of the air inside the machining zone on Precitech machines. Cold air output from an air conditioning unit is mixed with return air from the machine, then heated to meet strict temperature control requirements. A PID controlled heater maintains the set point with optimum control stability. Waste heat from air conditioner can be ducted to the ceiling so it does not disturb lab area temperature controls. Water drain from the air conditioner requires collection and disposal by the end user. Excess air flow pressurizes the machine enclosure keeping out drafts. Temperature is controlled to +/- 0.1C when used in an environment with air temperature same as controller set point within +/- 1.1 C temperature variations.
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Heat Exchanger inside machine (Requires Chiller Option)
This option mounts a water to air heat exchanger inside the machine enclosure. The coolant from the chiller is circulated through the heat exchanger and the air is circulated using a small fan. In this manner the air inside the machine enclosure can be kept more stable in temperature which improves the machine thermal stability.
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Vibration Isolation System Upgrade
The Nanoform 250 is provided with rubber isolators as standard but these can be upgraded to self leveling dual chamber type. This is recommended if the machine will be used in an area with more than usual floor vibration, such as near presses, compressors, railroad tracks, or on upper stories of buildings.
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LED Task Lamp
The LED task lamp is used to improve illumination of the working zone without the addition of heat. It comes mounted to the machine enclosure with a gooseneck flexible mount. This allows the light to be oriented as desired by the operator. There is a switch on the head for turning the light off when not needed.
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Remote Jog Pendant
This jog pendant allows the operator to perform some setup functions while away from or not facing the machine controller. For safety purposes, when the remote is active, the main operator controller is not functional. A light is provided on the main controller indicating that the remote pendant is active. Functions provided include E stop, continuous and incremental axis jog, jog increment size, and shift selection.
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Removable Hard Disk Drive
This feature allows the hard drive to be removed from the machine in cases where the files contained need to be locked up for protection, or where a second duplicate hard drive can be kept as an immediate backup in case of hard drive failure.
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Part Programming Software
Precitech offers an aftermarket software (DIFFSYS) for the creation of part programs. This software is available in a variety of configurations (aspheric’s, diffractive’s, freeform surfaces) and with or without measurement corrective feedback functionality. Cost varies with the functions desired. DIFFSYS basic for programming of 2D tool paths is included with the Windows Interface.
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50,000 RPM Air Bearing Tool Spindle With Horizontal Mount
This configuration is designed for deep sag concave grinding. Used with the rotary B-axis, the system includes a motorized spindle, wheel dressers, and mounts for the tool spindle horizontal on the rotary B-axis. See Nanoform 250 grind package for water based coolant compatible machine.
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50,000 RPM Air Bearing Tool Spindle With Variable Mount from 45 Degrees to Vertical
This configuration is designed for users with wheel shank interference issues. By tilting the spindle away from vertical, a larger shank can be used when grinding concave parts. Can be used with or without the rotary B-axis for use near vertical. Recommended for use with the rotary B-axis when tilted beyond 15 degrees away from vertical. Not for use with water based coolants. See Nanoform 250 grind package for water based coolant compatible machine.
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15,000 RPM Motorized Tool Spindle (Vertical)
A high stiffness, DC motor driven, air bearing spindle is mounted vertically to an angle bracket located on the Z-axis. This enables grinding of glass optics, grinding of steel mold inserts, or spiral milling diamond turnable materials. The tool spindle can accommodate wheel sizes up to 127mm diameter and can run with variable bidirectional speeds up to 15,000 rpm. It can be used together with a fixed diamond tool holder for preparing fixtures or easily transitioning between grinding and diamond turning. It also has a dedicated removable mount for use with the Ultracomp surface measurement probe. See Nanoform 250 grind package for water based coolant compatible machine.
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80,000 RPM Turbine Tool Spindle / Horizontal, 45, Vertical
This air bearing turbine spindle is packaged on a flexible mount that can be rebuilt with the spindle in either horizontal, vertical, or 45 degree downhill positions. The spindle can also be pivoted about a vertical axis to provide better work approach when needed. Can be used with or without the rotary B-axis. Not for use with water based coolants. See Nanoform 250 grind package for water based coolant compatible machine.
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60,000 RPM Turbine Tool Spindle / Horizontal
An air bearing turbine driven spindle is mounted to the Z-table next to other tool holders. This allows marking, grooving, or milling of features into the work piece. The tool spindle axis can be pivoted away from the work spindle axis from zero to 25 degrees of angle in the horizontal plane in increments of 5 degrees. Not for use with water based coolants. See Nanoform 250 grind package for water based coolant compatible machine.
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ACT Software Upgrade
Adaptive Control Technology (ACT) software continuously adjust servo control parameters in real-time for the specific machining task and work piece running on the machine. ACT actively cancels repetitive sources of error. The benefits of ACT are most apparent for machining tasks involving high velocity machine motion (ex. Slow Tool Servo) or when continuously varying processing conditions (ex. ramping spindle RPM across parts during STS processing). This is recommended for use with the C-axis option and is not of assistance if the spindle does not have C-axis.
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