Specialized Confirmat Drill Bits

In addition to our wide range of standard dowel, through and hinge style drill bits, our tooling program includes some specialty bits for longer drill lengths and special tool geometries for material that can present challenges.  For the production of cabinets, shelving and RTA (Ready to Assemble) furniture, one would typically use standard drill bits for shelf pins, dowels, screws and hinges. In addition to these standard drills bits, GDP GUHDO goes beyond to offer drills bits for the production and insertion of cabinet hinges, cam locks, connector housings and confirmat screws commonly used in the production of cabinets, shelving and RTA furniture.

30185

Specialized Drill Bits – Built to Spec

We also carry a variety of precision drill chucks and quick change adapters as well so we can quickly fill all of your tooling needs! If you currently utilize hardware supplied by Amerock, Blum, Grass, Hafela and Liberty and seek high-quality drilling solutions, contact us now to see how we can help you with your specialized requirements.

Dowel

Specialized Hinge Bit

Precision CNC Boring Drill Chuck

6380 Series Universal CNC Boring Chuck - HSK Style

6380 Series Universal CNC Boring Chuck – HSK Style

The 6380 Series Universal CNC Boring Chuck is designed to clamp precision drill and boring bits with high clamping power and accuracy.  When it comes to clamping, the 6380 Series utilizes a Jacobs chuck clamping system, offering superior concentricity with a maximum tolerance of 0.02mm (.0008″) at a 35mm drill length, extending from the output. Drill bits with a flat on the shank are not a problem either.  Flat shanks are clamped accurately and tightly provided the flat portion of the shank is positioned between 2 of the 3 clamping jaws as seen in the picture below. A minimum clamping depth into the adapter of 20mm is required.

6380 Series Universal CNC Boring Chuck - Clamping Flat Shaft

6380 Series Universal CNC Boring Chuck – Clamping Flat Shaft

The maximum RPM of for the 6380 Series Universal CNC Boring Chuck is 20,000 RPM.  This precision drill adapter can be used for RH or LH rotation tools and it’s comes in a range for either 1 to 13mm or 3 to 16mm, depending on requirements.  Interested in more information? Give us a call at 1-800-544-8436 or contact us now!

Tooling for Cutting Composites

The use of composite materials has been on the rise for years due to their unique characteristics including reductions in weight and increased flexibility.  By definition a composite is a combination of two other materials used to create a unique material that is superior to either input material (a super-material?).  The performance increase makes composites more difficult to machine,  however, selecting the proper tool for the application is paramount to optimizing tool performance.  Each composite type comes a unique set of cutting challenges due to the materials structure which, unlike metal or wood,  is composed of layers of fibers and resins bonded together with intense heat and/or pressure.

ceramic fibersDue to structural differences, composites will behave differently based on the materials used in the creation of the composite, so when cutting a new material it’s important to do a test cut on scrap material.   Cutting composites requires getting through the different layers of various material types by chipping, ripping or shredding.  Common composites include carbon fiber or fiberglass layered and bonded by polymer resins such as epoxy and polyurethane. Each of these layers react differently when cut and the heat generated by the cutting tool can cause de-lamination or worse if not machined properly, leading to excessive tool wear and a change in tool geometry.

Diamond tipped (PCD) tools are often most effective in cutting composites as it’s important for the tool to cut with minimal force applied to the material. Composites will “eat” through solid carbide tools in many cases, so while the sticker shock of PCD may detour some people the cost per linear foot machined will be drastically decreased when compared with solid carbide.

With drilling composites, splintering can be an issue, so using PCD tools is especially important as a dull bit will lead to layers being pushed aside vs being cut.   This leads to de-lamination or “blow-out” on the exit side of the material.  With a new material it’s best to test the characteristics prior to machining any large project as the observable properties will be important in finding the right RPM/feed rate to optimize cut quality.

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Carbon Composite/ Fiberglass Reinforced Plastic Example

The example carbon fiber tools used:

1 Diamond-Dowel Drill

2 DIATEC-4 Diamond Router Cutter

3 DIATEC Diamond Cutter w/ Alternate Shear Angle

4 DIATEC-4-Quattor Diamond Router Cutter

 For more information on application specific composite tooling contact us today so we can discuss your exact needs.

The drill on drill bits!

Drill Bits

PCD (polycrystalline diamond) dowel bit

While metric dimension drill bits all look quite similar to the untrained eye, there are differences in style, design and material quality that have a clear impact on tool performance, cost and your bottom line. About 20 years ago, carbide-tipped drill bits, previously manufactured for the most part in Germany and Italy, were largely replaced by the “invasion” of Chinese and Taiwanese bits offered at a 30-40% reduction in price. The adage, “you get what you pay for“, applies here just like everywhere else in life.

While the initial cost of the bit goes down, production costs actually go up as a result of shorter tool life, lower quality of edge, increase in tool changes and more panel rejects. The difference between a Taiwanese and German drill bit is quite noticeable as the German bit has a faster twist which results in quicker chip evacuation, less heat and thus, longer life, not to mention better engineering of clearance angles and tip geometry which impacts the finish quality of the cut. The German bit is King in solving applications that are prone to problems, such as laminated “disks” getting stuck in the dowel point, irregular (egg-shaped) holes, burning, premature wear and edge chipping on the hole.

Solid carbide drills have also gained popularity and are available in several of the more popular diameters. For those seeking the ultimate in quality and unbeatable performance, PCD (polycrystalline diamond) drill bits have made their debut and are the standard for composite materials! While the diamond drill bits are limited to certain sizes, they are available in Dowel, Through Hole (V-Point) and Hinge style with overall lengths of 57 and 70 mm. These high performance drill bits are ideal for drilling abrasive materials including MDF, particle board, laminates, fire resistant boards or gypsum based materials. So, if you haven’t given much thought to your drill bits, perhaps it’s time to consider the options? Interested? You can contact us and we are happy to help!