LC CNC Tabletop Router Features:

• Precision Ball Screws on All Three Axes
• Closed-Loop Servomotors and Drives
• THK Rails and Bearings
• Aluminum T-Slot Table / Vacuum Plenum for Maximum Fixturing Flexibility
• Automatic Tool Calibration
• User Friendly Windows® Based G-Code Interface
• Free CNC Interface Updates
• Backed with 20 Years of CNC Expertise

Techno Drive Systems (view image)
Techno’s LC Tabletop series CNC router utilizes THK rails and ball screw drives, which provide smooth play-free motion, require minimal maintenance, provide greater accuracy and longer life. The placement of the ball screw is in the center of the axis of travel, so that it eliminates the possibility of racking. This assures that the Techno CNC machine does not need to be realigned ever, causing no wear on the drive or carriage system. No down time spent repairing damage from racking results in increased productivity and profits.

Competitor Drive Systems
Several competitors of Techno use other drive systems, such as the rack-and-pinion gear drive. The racks are typically installed on the outside of the machine, thus exposed to the elements. As the machine moves (cuts), debris collects on the rack. These foreign materials get ground into the racks and gears, causing more friction in the drive system, which, in turn causes wear and makes the machine less accurate and unstable.

In addition, rack-and-pinion systems typically require two drive motors to drive the one axis (one on the right side and one on the left side of the machine). Using a two motor, rack system requires that the motors stay completely in sync with one another at all times. When these motors get out of sync, racking occurs (racking is when the system twists due to misalignment). Racking deforms the gears within the system and begins to wear, making the machine unstable. During a machine run, when a load becomes too heavy, stepper motors (which are typically used with rack and pinion systems) stall. This saves the stepper motor from excessive damage, but not the rack and pinion drive components.

In the case of servomotors used in conjunction with rack-and-pinion drives, both the motor and the rack suffer damage when racking occurs. Servo, being the more powerful motor than a stepper, compounds the damage in a rack-and-pinion system, making this a very expensive repair. Techno’s ball screw drive (and servomotor) systems do not suffer these setbacks because they do not rack.

THK Carriage and Rails

(view schematic of THK Rails)

Techno refuses to cut any corners when it comes to drive components because, literally, everything is riding on them. High-quality THK carriage and rails provide:

• Smooth Play-Free Motion
• Superior Cut Quality
• Minimal Maintenance
• Machine Longevity

On the LC Tabletop series CNC router, Techno utilizes four bearing carriages per axis assembly. These bearings are capable of carrying loads in excess of 8,000 lbs. per carriage; dynamically. This design, bordering on overkill, assures a long productive lifetime for the Techno LC Tabletop series CNC router.

This chart provides additional load characteristics for THK rails and bearings.

Closed-Loop Servo Controller System

The Techno LC Tabletop series CNC router is equipped with servo motors that deliver continuous high-speed performance. Because these high-powered motors are closed-loop servos, they constantly check and maintain their position at all times, allowing you to create perfect parts every time.

Multi-Zone Vacuum Table

The Techno vacuum table and accessories are designed to be as universal as possible. Techno understands that fixturing parts can be one of the most complex aspects of manufacturing. Techno's vacuum table allows for both mechanical and vacuum fixturing to be used simultaneously.

What does this mean?

If you are processing sheets of material, such as: plywood, MDF, melamine, plastic, aluminum, foam or any other sheet-like material, vacuum hold-down is an excellent solution. If you are processing small or irregular shaped products, then you may want to utilize vacuum along with mechanical clamps.

The T-Slots built into the Techno vacuum table provide easy mounting gates so that your materials line up square and parallel to the axes of travel. In addition, the tables are zoned. If you are processing small parts then you do not require the entire machine's vacuum table to be wide open, rather just a small section.

Techno's vacuum tables are also easily customizable. They are gridded tabletops, which allow gasketing material to be routed throughout the grid, essentially portioning off and concentrating your vacuum holddown. The 1" grid-channels cut into the tabletop, allow gasketing to form specific patterns to fixture small parts.

When utilizing all the various functions and advantages of the Techno vacuum table, very little vacuum escapes, which allows you to use smaller vacuum pumps. Simply shutting down valves or utilizing the rubber plugs to isolate an unused section on the table also makes setup and fixturing parts quick and easy.

Automatic Tool Change and Manual Collet Type Spindles

Techno offers its customers many spindle options for their CNC routers. The right spindle is important in order to achieve optimum machine performance. Both the Automatic Tool Change or Manual Collet Type Spindles, are constructed of aluminum extrusion bodies with angular contact bearings that are housed in a cast iron end bell. They are available in the ranges of 1 to 16 hp, and each set comes standard with ER industry collets/wrenches, vacuum shroud, inverter electronic controls, line reactor for spindle surge protection, automatic spindle, start/stop relay, and programmable speed control circuit board which allows users to predefine the spindle rpm within CAD/CAM programs.

Features:
• 3 ph AC HSD Motor
• 3 ph Inverter Control
• Line Reactor for Spindle Protection
• Advanced Electronic Circuitry
• 6000 to 18000 Fully Programmable rpm Operation
• ISO or HSK Tooling Available
• Electric Fan Cooling
• Extremely Quiet Operation