New at Toolinghouse

1.  Quantity discounts & 1 piece minimums

on most US Made Carbide Drills:

We've Updated!

We are pleased to announce two major changes in regards to our US Made Carbide Drills.  We have eliminated the minimum order quantity on all of our fractional, wire & letter size carbide drills.  You may now purchase single pieces.  We have also added quantity discounts to those sizes of carbide drills.

Other available US Made Carbide Drills include: Center drills (regular and long length), Spotting Drills, Drill Mills, Spade Drills, & Specials.

Click here to view US Made Carbide Drills.

2.  E-Z Burr Rivet Hole Tool Bundles

DON'T JUST DEBURR - E-Z BURR!

The NEW E-Z Burr Rivet Hole Tool Bundle is a selection of 5 standard rivet hole diameters: 1/8", 5/32", 3/16", 7/32" and 1/4".  The pricing is great as now, with these bundles, you can buy five E-Z Burrs for less than the price of four.

Available in HSS or Carbide.  Your choice of front & rear cutting or rear cutting only.  The HSS bundles comes standard featuring a positive rake blade that is suitable for deburring most materials.  The Carbide bundle features E-Z Burr's new "Small Hole Series" carbide deburring tools.

Click here to view E-Z Burr Rivet Hole Tool Bundles

Click here to view all E-Z Burr Products

3.  Drill, Deburr, Chamfer & Countersink in one pass

with one tool!

With the E-Z Burr BurrFree Drill you can generate a hole, deburr the breakout side of the hole and chamfer, countersink or deburr the top side of the hole in a single pass with one tool.

Save Time - Save Money

The BurrFree drill utilizes a industry standard spade drill tip on the end of an E-Z Burr Deburring/Chamfering Arbor that allows the user to perform all of the operations listed above in a single pass!  Don't waste time changing tools for multiple operations - perform them all at one time with one tool - The E-Z Burr BurrFree Drill.  US Made and in stock now for immediate shipment.

Click here to view the BurrFree Drill

4.  Sowa Takes the guesswork out of Tap Selection

Sowa offers three different Vanadium Taps and one Powdered Metal with color coded bands for easy identification.  Blue Ring: for general ductile materials, Yellow Ring: for tough materials, Orange Ring: for stainless steel and Red Ring: for high tensile materials.

Click here to view all Sowa Taps

New High Torque Retention Knobs Available

New Generation High Torque Details:

It has been proven that J&M's new High Torque Retention Knobs, when tightened to the same torque value as standard retention knobs, expand the tool holder shank two to three times less than the standard knob.  The inclusion of a pilot on the high torque ANSI retention knobs greatly reduces the likihood of retention knob breakage, especially when the Belleville Washers are not performing at full strength.  The High Torque retention knobs are designed to be balanced dynamically from end to end, which make it much easier to keep balanced toolholders within tight balancing tolerances after installation.

Features of the High-Torque Retention Knob:

• reduces toolholder expansion
• reduces costs
• increases profit
• increases production
• increases tool life
• increases feed rates
• increases rigidity
• improves toolholder balance

We have the Standard and new "HT" Series available on all of the most commonly used knobs/studs now on the Toolinghouse Website.  At Toolinghouse we carry one of the largest offerings of Retention Knobs/Pull Studs globally.  99% of all knobs ship same day! All knobs are US MADE and laser marked with part number for easy reordering. 

Tapping

Let's Talk Taps

    * The influence of hole size and preparation are often overlooked when troubleshooting tapping problems.

    * One of the first steps in troubleshooting a tapping operation should be careful evaluation of the drill size and drill condition.

    * Some of the most common user errors are misconceptions about hole size and its relationship to thread strength.

    * The diameter of the hole to be drilled for the threads in a nut or other inside threaded piece is theoretically the minor diameter of the corresponding screw size.

    * Threaded assemblies fail essentially due to one of two different happenings: 1) Stripping 2) Tensile failure of the bolt across its cross section.

    * If the bolt is stronger than that of the nut, it will fail either by stripping or by tensile failure BEFORE the nut fails.  This is actually a good thing as the bold is almost always much less expensive than the "nut".

The most common misconception about hole size is that the strength of the threaded assembly increases with a smaller tap hole size.  Here are some facts that may surprise you:

   1. Beyond 55% thread height of the internal thread there is virtually no increase in assembly strength.

   2. It is rare to specify a drilled hole that will yield greater than 60-65% internal thread height when out of roundness and eccentricity of the internal thread are taken into account.  In general, yields of 72% are common.  Unless the material strength of the bolt is greater than that of the nut.  For instance an aluminum nut with a hardened steel bolt should have a percent of thread up to 75%.

   3. Even the highest quality of drill will have a tendency to cut oversize.  Published drill recommendations actually take this into account.

Other Tapping Tidbits:

The size of the tap drill for American National threads equals major diameter minus1, divided by the number of threads per inch.

Remember that Forming Taps require larger holes than cut taps.

Use the largest possible hole size when tapping.

Watch for deformation of the hole when preparing (drilling) hardened materials such as steel and stainless steel.

Finally always remember to keep your drills sharp!  Also keep feed rates as high as possible while maintaining acceptable drill life.

Deburring Holes

One of the most unique yet simple tools I have ever come across in the metalworking world for deburring holes is the design made by E-Z Burr Tool Company in Plymouth, Michigan, USA. As I said, it is probably one of the simplest tooling designs yet it performs a very unique operation. The E-Z Burr Tool will deburr the front and the rear of a drilled hole on the top and BOTTOM or breakout side of the hole in one stroke. The tool runs just like a drill in that it is fed into the previously drilled hole and then withdrawn. No stopping of the spindle or dwelling is required. These tools come in several designs such as the Micro Series, HSS Series, Carbide Series and Combination Tools that generate the hole and deburr/chamfer it in one stroke. (The HSS Series is shown in the top picture and the Carbide Series is shown in the bottom picture.)




How does it work?

As the rotating tool is fed into the work piece, the extended blade or carbide insert cuts and deburrs the front burr as the blade/insert is collapsing under the pressure of being fed into the hole. The tool can be adjusted to make nearly any chamfer size you want - more about that later.

Once the insert/blade is completely collapsed inside the hole the tool is able to continue down through the hole to reach the backside or the breakout side. The top of the hss blade or carbide insert does touch the ID of the hole but the blade/insert is crowned and polished so as to not mark the bore while being fed through.

Once the tool has reached the backside of the hole and has cleared the hole, the blade/insert "springs" back out of the arbor. (There are not any actual springs in the E-Z Burr Tool) The feed is reversed, yes you need the capability to fed on the return stroke, and the rear burr is removed as the tool is withdrawn.

Easy to Use in All Machines.

E-Z Burr Tools are easy to maintain, set up is quick and straightforward. The tools can be used in any number of machines such as CNC Machining Centers, Transfer Lines and Dial Machines. They can even be used in a drill press or by hand in a drill motor. Think about employees twisting and turning trying to use those deburring knives and similar tools to deburr when they could be using the E-Z Burr and reducing stress and fatigue while increasing production and consistency. No special skills are required.

Patented Features of the Tools.

All E-Z Burr product lines utilize the same and exclusive patents except for the Micro Series. They share the same design features such as solid arbor design, easy blade/insert adjustment, quick blade/insert replacement and unique spring type flex without any springs.

Solid Arbor:

Other tools on the market use a hollow arbor or tuning fork style arbors. By contrast the E-Z Burr uses a solid arbor that offers a tougher, more rigid tool that maximizes cutting power and lengthens tool life.

Easy Adjustability:

As mentioned earlier the chamfer size of the E-Z Burr can be adjusted. With a simple turn of an allen wrench used in the adjusting screw located in the side of the arbor, cutting pressure can be adjusted from extreme low to extreme high. This pressure is what designates the size of the chamfer. Nothing else changes in terms of program and speeds and feeds to change chamfer size. Low-break Loctite is used to maintain torque tension to assure part to part consistency.

Changing the HSS Blade or Carbide Insert:

The blade or insert unlock with a quick 1/8 turn (not 1/8" but rather 1/8 diameter) counterclockwise of the locking screw. Once in the unlocked position, the blade/insert can be removed and a new or re-sharpened one placed back into the arbor. Lock the blade or insert back into place with a 1/8 turn clockwise of the locking screw.

For more on E-Z Burr Deburring and Chamfering Tools or to locate a distributor near you, please visit E-Z Burr Tool Company.

To purchase now at the lowest prices available or for more information on E-Z Burr Products please visit www.toolinghouse.com.

Hole Making & Finishing

If you are manufacturing you are probably making holes. Drilling holes, milling holes, deburring holes, reaming holes and otherwise creating, altering and/or repairing holes. This blog will discuss the many, many aspects of hole making and finishing. Please feel free to post as this is an open forum but a clean one please.