Aggregate Heads

Are you struggling with moving your work from one machine to another?  Do you have to re-position the work-piece on your machine?  Is your machine unable to perform specific criteria, which causes you to turn down business?  If you have answered “yes” to any of these questions, continue reading this post!

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Generally, companies consider purchasing an aggregate head for a CNC machine when an additional axis would reduce material handling and speed up production or when existing equipment does not have the capability needed to efficiently perform a job at hand. Since there are many styles and types of aggregates, choosing the right one is essential.

There are three primary considerations:
1) How long will you be “in the cut?” (Excessive heat resulting from the cutting action can cause aggregate failure.)
2) How are you cutting the material? (Will you be primarily routing or sawing?)
3) What type of material are you cutting? (Is it a dense material or a soft material?)

Aggregate head bodies are constructed of aluminum, which keeps the weight to a minimum on your machine spindle and in your carousel.  This also allows the heat to dissipate, keeping the aggregate as cool as possible while it’s in the cut.  Internally, our aggregates use beveled, calibrated gears to ensure there is minimal “backlash” in the gearing.  As you can imagine, there is a lot of energy transferred to the gearing when the aggregate first enters the cut.  That energy is transformed to heat.  Based on this scenario, how you keep the aggregate cooled is critical to the longevity of the aggregate.

Viscous grease is the most common method of cooling/lubricating the gearing.  A greased gear-lubricated aggregate is ideal for routing and light scoring of material.  But, with viscous grease lubrication, there is a “catch”.  During operation, the temperature of the aggregate cannot exceed 185 degrees Fahrenheit.  That is the maximum heat index the grease can withstand. If the aggregate temperature exceeds 185 degrees, the grease will burn off, creating a metal-on-metal situation with the gearing, greatly increasing the temperature internally.

source: Woodworking Network Interview with GUHDO Aggregate Sales Specialist Chris Kelly

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For more information visit our website at http://www.guhdo.com/aggregates.php

Feed Rates for Plastics

DSC_0615“Feed rate” refers to the speed at which material is being “fed” through the machine. It is generally measured in inches per minute or meters per minute, depending on whether the Imperial or metric system is used. The Feed rate is part of the formula used to calculate chip load (size of the chip created in the cutting process). The other parts of the formula are motor speed on the router (rpm) which dictates how many revolutions per minute the tool is turning, and the number of flutes (wings) on the tool. To calculate chipload the formula is Feedrate / (RPM x number of flutes). The most common problem, in regard to incorrect chipload is premature tool wear, tool breakage, most often due to excessive heat buildup and poor material finish/chipping.

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Typical chip load range for Plastic Materials

Hard Plastics .004-.016″
Soft Plastics .006-.014″

The smaller the tool diameter, the lower the chip load that applies, will be.

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For more information visit our website at guhdo.com!

Collets

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Regular replacement of collets should be considered part of good machine maintenance as the condition of your collets will directly reflect upon the tool life as well as quality of finish on your product. Collets that are worn and dirty will create vibration during the cutting process.

CNC Machine Collets

Inspect your cutting tools to see if collet marks are visible on the shank. If so, that is an indication of vibration occurring during the cut and it is time to replace your collet. Although, the vibration can also stem from an imbalanced collet nut or tool holder.

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Did you know that in addition to the standard collets with a tolerance of 0.5 mm, GUHDO also offers Premium collets with a tolerance of 0.15 mm?!

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For more information see our webpage at http://www.guhdo.com/toolholders-collets-arbors/collets.php

Advantages of our “Customize it” Insert Tooling Program for CNC Machines

DSC_1036Advantages of our “Customize-it” system include:

  • No backer plates!  Tool body becomes a dedicated cutter and supports the insert knife, thus improving tool precision!
  • Constant cutting diameter with no re-adjustment do to dimension changes in the tooling
  • Manufactured in strict accordance with European Safety Standards
  • All tool bodies are precision balanced to G2.5 specifications
  • Cost-effective!

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  • Inserts can be sharpened (face-ground)
  • Special carbide grades available depending on application
  • Cost sometimes less than the cost of a carbide-tipped equivalent tool

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  • Excellent tool life!
  • No lengthy lead time!

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In this example of profile insert tooling, you see all the component tooling for solid wood cabinet doors. We also have insert tooling for exterior windows and doors.

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The below example shows insert tooling for MDF door production,  these profiles are just examples of the many variety of tools…whether a shaker door, square corner MDF door, traditional or more contemporary profile, we produce per your exact specifications!

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Interested? You can contact us at [email protected] or call us toll free at 1-800-544-8436 to receive a quote for a custom router tool!  For more information visit http://www.guhdo.com/router-tooling/custom-tooling.php or check out this post.

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