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Spindles, Tool Change Capability

Car Disc Brake

Liquid-Chilled Spindle
XR-15 Collet

XR-15 Collet, Manual/Wrench Type

  • 15HP rated at full 480V-3 phase

  • Operating range 3600 rpm to 18,000 rpm

  • Aggressive plunge rates, fixed pre-load (up to 600 in/min)

  • 1” diameter capacity, manual change

  • high strength (32,000 tensile) cast iron outer housing to help maintain internal precision alignment;

  • 15HP motor pack supplied by E+A (Switzerland), also used by spindle giants Fischer & IBAG (4-pole, full torque @ lower RPM)

  • cast iron provides unmatched system rigidity, quietness of cut and quality edge finish, maximizing tool & bearing life (compare to cheaper die-cast housings);

  • heat shrunk rotor for ideal internal balance;

  • upper and lower balance rings that are precision balanced;

  • balanced to 80 decibels as measured at our plant at full speed/no load;

  • Supplied with closed-loop auxiliary chiller, dust hood, eight collets each (customer specifies desired sizes);

  • two duplex 50 mm ID ceramic lower bearings;

  • two duplex 40 mm ID ceramic upper shaft bearings;

  • micro spray mist oil lubrication to the bearings (superior to grease which can contaminate bearings).

  • sensors to detect desired coolant flow;

  • heat sensors to avoid high internal heat;

  • low level sensor in the spindle oil lubricator to detect when oil needs to be added;

  • These sensors will automatically help avoid costly mistakes or oversights.

Liquid-Chilled Spindle
XR-20 Collet

XR-20 Collet, Manual/Wrench Type

  • 20HP rated at full 480V-3 phase

  • Operating range 3600 rpm to 24,000 rpm

  • Aggressive plunge rates, fixed pre-load (up to 600 in/min)

  • 1” diameter capacity, manual change

  • This spindle model utilizes high precision internal components including a jig bore ground ID and precision dowelled end bells

  • High pressure oil injector system for bearing lubrication

  • Optional drop monitoring system to safeguard against failures

  • Ceramic bearings are tandem mounted front to rear to support higher operating speeds (40mm rear, 50mm nose)

  • This spindle model will allow for up to 50% higher cutting rates than slower (18,000 rpm) spindles with less HP.

  • 1,000 Hz Spindle amplifier or equivalent

  • Mounted on a cast iron plate for independent control; cast iron provides unmatched system rigidity, quietness of cut and quality edge finish

Liquid-Chilled Spindle
XR-15 Power Drawbar

XR-15 Power Drawbar, HSK 63F Interface

  • 15HP rated at full 480V-3 phase;

  • Operating range 1,000 rpm to 18,000 rpm;

  • Aggressive plunge rates, fixed pre-load (up to 600 in/min);

  • 1” diameter capacity, power drawbar;

  • Push button manual quick-change or fixed position automatic rack/carousel.

  • high strength (32,000 tensile) cast iron outer housing to help maintain internal precision alignment;

  • 15HP motor pack supplied by E+A (Switzerland), also used by spindle giants Fischer & IBAG;

  • cast iron provides unmatched system rigidity, quietness of cut and quality edge finish, maximizing tool & bearing life (compare to cheaper die-cast housings);

  • machined/balanced shaft 19.5” long and up to 3.125” OD;

  • 460 volt, 4-pole motor pack for full torque at lower RPMs;

  • heat shrunk rotor for ideal internal balance;

  • upper and lower balance rings that are precision balanced;

  • balanced to operate at 80 decibels at full speed/no load.

  • OTT JAKOB drawbar assembly with precision front grippers interfaced to HSK 63F precision tool holder for unsurpassed gripping efficiency;

  • Unlike tapered tooling with a retention knob (ISO/CAT), HSK grips the inside of the tool holder.  Gripping force increases along with RPM;

  • HSK tool holders have two points of contact: the taper and the flange face.  Tapered tooling only has a single contact point: the taper;

  • A two stage air cylinder is used to overcome the spring stack to allow the tool holder to be removed;

  • In 1974, Ott developed the power drawbar, which has been continuously improved to meet new application requirements;

  • Today, 250,000 machines worldwide are operating with the Ott power drawbar.

  • two duplex 65 mm ID ceramic lower bearings;

  • two duplex 40 mm ID ceramic upper shaft bearings;

  • micro spray mist oil lubrication to the bearings.

Push-Button
Quick Change

​​Amazingly simple & flexible approach

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Less expensive than an automatic tool rack or carousel (just paying for the HSK or ISO-taper spindle)

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Not limited to 4-8 tools – preset as many tool sizes in CNC control as desired

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Often faster than jogging spindle over for automatic tool change

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Eliminates tool changer concerns like operator error, misalignment & crashes

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Can be upgraded to automatic tool rack or carousel at any point if your requirements change

Table-Mounted
Rack

When automatic tool change is justified, you’ll find all Accu-Router designs incorporate key principles to stand up to long-term, reliable production.

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Important — we consider a side-mounted tool rack/carousel design superior for a number of reasons versus a bridge-mounted carousel (designed to save $$$):

  • Fixed position & rigid – highly repeatable

  • Does not add extra weight to bridge – load can compromise tolerance over time

  • Does not compromise dust control – spindle picks up tool vertically

  • With high rapid rates, cycle time is not adversely affected
     

The tool change mechanism largely depends on the host Accu-Router’s holddown technology. When vacuum only is used, he most economical solution is a fixed position linear rack, mounted along either long edge of the machine table. Examples of single ply “vacuum only” applications include aerospace composites, plastics and aluminum.

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Such designs commonly have 10-12 tools onboard with a rotary-actuated chip cover to keep out debris.

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When Roller Assist holddown is used, both long table edges regularly pass underneath the rollers, so a column-mounted carousel (or rack to serve two spindles) is utilized beyond the roller envelope.

Column-Mounted Carousel

When automatic tool change is justified, you’ll find all Accu-Router designs incorporate key principles to stand up to long-term, reliable production.

​

Important — we consider a side-mounted tool rack/carousel design superior for a number of reasons versus a bridge-mounted carousel (designed to save $$$):

  • Fixed position & rigid – highly repeatable

  • Does not add extra weight to bridge – load can compromise tolerance over time

  • Does not compromise dust control – spindle picks up tool vertically

  • With high rapid rates, cycle time is not adversely affected
     

The tool change mechanism largely depends on the host Accu-Router’s holddown technology. When Roller Assist holddown is used, both long table edges regularly pass underneath the rollers, so a column-mounted carousel (or rack to serve two spindles) is utilized beyond the roller envelope. Examples of roller applications (single ply or stacked) include plywood furniture frames, reels and boating.

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Such designs commonly have 8 tools on board and features such as:

  • the rotary carousel is the latest Accu-Router design incorporating a servo drive motor (4th axis, bi-directional to closest programmed tool position) and a precision gear motor for very smooth and accurate tool holder positioning;

  • thick ball bearing support to help compensate for varying tool holder weights with constant holder heights for efficient tool changes;

  • common holder pick and place location with an included photo-cell, and parked/guarded positions for tool holders not in use

  • entry and exist brush segments to help keep holders clean;

  • Includes (8) collets & HSK 63F tool holders (specify sizes)

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