F&L TECHNICAL SALES INC.
  • Home
  • About
  • Principals
    • Blue Photon
    • Dorian Tool
    • Hannibal Carbide
    • Heritage Cutter >
      • Brubaker
      • Data Flute
      • Decatur Diamond
      • Weldon
    • Horn USA
    • Mate Workholding
    • mPower Workholding
    • Techniks Group >
      • Techniks
      • Parlec Inc.
  • News
  • Contact
    • Promotions

Uncoated Import versus Techniks(Parlec) Coated Collet Nut - Put to the test

1/11/2022

0 Comments

 
edited by​ Bernard Martin
It’s been estimated that a tool with a run-out of 50% of the tool’s chip load will reduce its tool-life by 40%. That means that a 1/8” tool with a 0.00019” chip load per tooth will lose 40% of its tool-life with a run-out of less than 0.0001”.
Excessive and inconsistent run-out from a properly setup ER collet chuck assembly typically occurs due to friction build-up between the 30° face of the collet and the collet nut.

​As the collet nut presses down and turns against the 30° face of the collet, the collet face will tend to twist with the collet nut, distorting the shape of the collet. This radial distortion negatively affects tool run-out sine the collet bore is not longer straight.

Techniks', Mike Eneix took an uncoated, imported nut and put it to the test against the PowerCOAT nut.

They took them to the limit to see which one gives you more holding power. 

​Check out the video test below!
Techniks Parlec Coated vs Uncoated collet nut
0 Comments

Techniks New Catalog Features New Products: MegaFORCE retention Knobs and Triton Hydraulic Holders

4/13/2021

0 Comments

 
The 2021 Techniks Catalog is available for download now!!  It features the MegaFORCE Retention Knobs that we talked about in our February Article as well as the new Triton Hydraulic Holders. 
Techniks MegaFORCE Retention Knobs
The only thing standing between a job well done and catastrophic failure is the retention knob. MegaFORCE Retention Knobs are designed to deliver superior performance and enhanced safety for the critical connection between your machine spindle and the tool holder.  Retention Knobs are subjected to extreme pulling forces of up to 5,000 ft. lbs. Over time, this stress exploits weaknesses in the retention knob and can lead to breakage.

MegaFORCE Retention Knobs have been designed and manufactured to increase the strength and durability of this critical connection.

​The longer overall length engages threads deeper in the tool holder, reducing taper swelling and maximizing taper/spindle contact for the most rigid connection. MegaFORCE also features a redesigned, blended radii for improved overall strength, making MegaFORCE the strongest high-torque retention knob in the market.
Techniks Triton Hydraulic Chucks
The Triton Hydraulic Holders by Techniks feature a new hydraulic design to provides excellent vibration damping properties, so tools run longer and quieter and produce superior surface finishes. Triton provides 3.5X clamping force of standard hydraulic chucks.

Triton hydarulic chucks are charged with hydraulic fluid in a vacuum chamber to eliminate air and gas from the system. Coupled with a redesigned oil sealing system, Triton chucks are built to provide maximum holding power for years!


You can page view or download the new catalog below!
0 Comments

Techniks Introduces ShrinkLocked Rotary Toolholders

9/15/2020

1 Comment

 
by, Bernard Martin
Techniks Shrink Locked Rotary Toolholder
As carbide end mills gain higher and higher speeds and metal removal rates there has also been a trend by round tool manufacturers to tighten up the tolerances on both the cutting diameter and the shank diameter to improve concentricity. At the same time, shrink fit holders have become more and more popular because they hold a tighter concentricity as well.  To achieve this both the shank and the bore now have similar surface finishes and this has led to a problem  The tools pull out in the cut.

Shrink fit holders are the most accurate for TIR as the toolholder engages completely around round shank tools with a bore tolerance of -0.0001" to  -0.0003".  As high performance end mills have tightened shank tolerances to the same range of -0.0001" to  -0.0003" they have used finer and finer grain grinding wheels which give the shanks a 'shiny' appearance. 

Shiny means that the superfinished shank has a lower coefficient of friction. So, although the TIR is tighter, the shank is more "slippery".   End mills traditionally had surface finish of about 8 μin on the tool shank. But that's changed.  It's been recommended that tool shanks used in shrink fit holders should not have a finish finer than 16 μin. for optimum holding power, but tell that to the guy who just superfinished the end mill to a super cocncentric tolerance that you don't want it looking that good.

Everyone know that the last thing you want is for the end mill to slip in the middle of a heavy cut or on the finishing pass of a high tolerance part.  These 'hi performance' end mills, often times have higher helix angles which are great for ejecting chips but also create a higher pull out force on that slippery shank. And reducing the helix angle is not the answer.

We  already know that the gripping pressure is a function of the interference between the tool shank  and the shrink fit toolholder bore. Most shrink fit holders have a already bore surface finish of between 12 μin. and 16 μin.  So they are ground to a very high tolerance and have about the same surface finish as the toolholder shank.

End mill manufacturers and machinist have tried a variety of methods over the years to stop the tools from pulling out. This has ranged from grit blasting the shank to rubbing chalk on the shank, but most everyone in the industry has felt that the problem really needs to be addressed by the longer life toolholder rather than the replaceable cutting tool.
That's the problem that Techniks wanted to address. Techniks claims that their "proprietary non-slip TTG594 compound virtually fuses the tool shank with the shrink fit toolholder."

ShrinkLOCKED Toolholders eliminate cutting tool pull-out and provide 4X the friction drive force compared to un-treated shrink holders.
  • No modifications to your tool holder required.
  • Increase productivity with higher feed rates.
  • No impact on concentricity.
Techniks toolholder Shrink locked blast Diagram
It’s not just a rougher bore finish that enhances the holding power. TTG-594 is a compound that has a much higher Brinell hardness than carbide so it can “bite” into the tool shank. But this does not affect the ability to perform tool changes.

Techniks arrived at their 4x the holding power comes from torsion testing vs. a standard shrink fit toolholder. They used a ¾” carbide gage pin in a standard holder and found the torque at which the tool will spin in the bore.

They then tested the ShrinkLOCKED holder using the same test.

According to Greg Webb, at Techniks,
"We actually could not find the point at which the tool would spin in the ShrinkLOCKED holder as we broke the carbide gage pins at 4x+ times the torque of the standard holder. The holding power is greater, we just have not found a way to measure this, so we kept our claims conservative at 4x."
shrink-locked Techniks
1 Comment

Coolant Supply Options in Steep Taper Toolholders

11/14/2018

1 Comment

 
Tech Tip: Techniks and Parlec
Getting coolant through the toolholder and to your cutting tool can be accomplished in two ways with Parlec and Techniks toolholders. Coolant is delivered from the spindle by two methods:
  • Through the Spindle
  • Through the Flange Entry (DIN B)

Through Spindle Coolant Delivery

Through holes are standard in all Parlec and Techniks toolholders. Solid and through hole retention knobs are
available to accommodate coolant and non-coolant applications. This is the most common method of coolant delivery.

The coolant is delivered
from the spindle through the knob and exits through the cutting tool. Coolant through knobs are sold separately.
Picture

Through-Flange/ DIN B Coolant Delivery

Combined with solid retention knobs "Through the Flange" holes go through the flange to deliver the coolant from the spindle.

This is sometimes referred to as "DIN B" or "Form B". 

Picture
With Screws:Coolant delivered from the spindle through the knob and exits through the cutting tool. Coolant through knobs sold separately.
Picture
Without Screws:Coolant delivered from the spindle through the flange and exits through the cutting tool. Solid knob required. Solid knobs sold separately.
Through Flange/ Form B  is an available standard for many tools and available as a standard modification for most toolholders.

Form B convertible or AD/B (BC) is available in many sizes. The AD/B (BC) style can be used as either through the spindle , as supplied, or converted to Form B, through the flange. Flange entry is enabled by removing two screws
1 Comment

CAT and BT Taper Specifications

5/16/2018

0 Comments

 
Tech Tip: Techniks and Parlec
We have had several inquiries regarding steep taper rotary toolholders specifications.  Below you will find all of the technical reference information related to V-Flange Tolling Tapers and dimensions.
CAT ASME Rotary Toolholder Specifications
CAT V Flange Taper Specifications
  • All Parlec and Techniks Rotary toolholders meets or exceeds ASME B5.50-2009 specifications and all current specification updates except where improvements are made for high speed operation.
  • All Parlec and Techniks CAT tooling incorporates ParSymmetry for balance and chip hole for identification.
About the ASME B5.50 – 2009 Standard
This Standard pertains to the standardization of a basic tool holder shank and retention knob for computer numerically-controlled machining centers with automatic tool changers. The requirements are intended to provide tool holder interchangeability between machining centers with automatic tool changers of various types.

The dimensions for cone-angle
control are in accordance with the International Standard ISO-1947. This Standard will improve the understanding of the “CAT” toolholder, its associated components, and nominal operational values. It unifies the principle components of the basic machine tool holder interface—toolholders hank and spindle receiver geometry, pull stud, and conical taper information--into a single-source reference, providing instant access to information.

This
new information also eliminates ambiguities and establishes absolutes for all aspects of the toolholder/spindle interface.Intended forthose involved in the design, manufacture, use, or maintenance of steep-taper (7:24) toolholders and their ancillary components.
BT JIS  Rotary Toolholder Specifications
BT Taper Specificationsƒ
  • All Parlec and Techniks Rotary toolholders meets or exceeds JIS B6339-1986 specifications. ƒ
  • Taper is toleranced so that any error increases rate of taper only. Refer to Manufacturing Specifications for tolerance specifications.
BT-40 Shank is also known as: JMTBA MAS-403 "BT", JIS B 6339 - 1986, JIS B6339 - 1992, and ISO 7388/1 - 1983.

The spindle interface JIS B 6339 as the traditional interface for milling spindles distinguishes itself through it robust design. Its field of application ranges from fine machining to heavy duty roughing. The tool holder is pulled in the milling spindle with the help of an additional pull stud.

The centering takes place via the taper contact. Therefore, the JIS B 6339 interface is primarily suitable for applications with a spindle speed of up to 12,000 rpm in an unbalanced condition.
0 Comments

Evaluating Your Rotary Toolholders for Wear

3/14/2018

0 Comments

 
Tech Tip: Techniks and Parlec
Modern CNC machines feature high-capacity tool changers that automatically swap toolholders in and out of the spindle as needed, by means of a high speed swing arm or a rotary carousel. Periodically, toolholders should be examined for wear and if necessary replaced to maintain cutting performance.

New operators should be taught how to properly evaluate toolholders so they can recognize when toolholders need to be replaced to prevent premature cutting tool failure, or even expensive damage to the spindle.
Tool Life loss from Runout GraphYou lose 10% of cutting tool life for every “tenth” (0.0001”) of runout
Many operators do not know why it is necessary to replace their tooling, or have the experience to tell when it is time to do so.

Determining if toolholder components need to be replaced is not a difficult task, but does require that the operator knows what to look for.

A worn out holder will not provide good accuracy and will
quickly wear out your cutting tools. Worn tooling causes poor surface finish, and may damage your spindle.

This article will discuss the following types of causes and types of wear.
  1. Spindle Mouth Wear
  2. ATC Alignment Issues
  3. Taper Wear / Fretting

Checking For Spindle Mouth Wear

A worn spindle can cause runout issues that affect tool-holder accuracy and reduce cutting quality and productivity. This is a condition known as bell mouthing. If toolholder issues can be eliminated by bench checking T.I.R., then the source of the problem is often a worn out spindle mouth. A trained professional will be required to check and repair bell mouthing.
Techniks USA Measuring Runout
T.I.R. (total indicator runout) is the measurement of axial deflection of the cutting tool in the toolholder assembly. Techniks toolholders are manufactured to minimize runout and extend cutting tool life.

ATC Alignment Issues

It’s crucial to maintain proper ATC swing arm alignment. If the ATC does not insert the toolholder perfectly, damage to the spindle and toolholder may result.

Poor cutting
tool performance and reduced tool life will be evident.
Automatic Tool Changer  ATC Alignment Issues

Taper Wear / Fretting

Check the taper for signs of wear or damage where it contacts the spindle mouth. Any problems with the taper will have a direct effect on machining accuracy. If there are any imperfections on the taper, the toolholder should not be used. If noticeable marking is evident on the taper a condition called fretting may be occurring.
Fretting happens when two steel parts (holder and spindle mouth) are rubbing against one another. 

Once a toolholder is fretted it can pass the fretting to other spindles.  A spindle with fretting can pass the fretting to other toolholders.  Fretting in this sense if akin to sexually transmitted diseases and it should be considered just a seriously.

Rotary Toolholder Fretting
Fretting is evident from the bronze discoloration on the toolholder taper. It will also be present on the spindle. It can spread to other toolholders.
Fretting is believed to be caused by imperfect mating between tooholder taper and spindle, creating vibration and heat which develops the fretting. It is visible as small copper colored pits or marks on the taper. This is evidence that the toolholder is becoming worn. Fret-ting is easily mistaken for rust, but it is not. Once noticeable fretting develops the toolholder should be replaced. New toolholders that quickly develop fretting, or toolholders that stick in the spindle, may indicate a spindle that needs to be reground.
0 Comments

    ABOUT

    This is where we publish technical articles, applications stories, tip and tricks, new product announcements and press releases.

    Archive

    April 2022
    March 2022
    February 2022
    January 2022
    December 2021
    November 2021
    October 2021
    September 2021
    August 2021
    July 2021
    June 2021
    May 2021
    April 2021
    March 2021
    February 2021
    January 2021
    December 2020
    November 2020
    October 2020
    September 2020
    August 2020
    July 2020
    June 2020
    May 2020
    April 2020
    March 2020
    February 2020
    January 2020
    December 2019
    November 2019
    October 2019
    September 2019
    August 2019
    July 2019
    June 2019
    May 2019
    April 2019
    March 2019
    February 2019
    January 2019
    December 2018
    November 2018
    October 2018
    September 2018
    August 2018
    July 2018
    June 2018
    May 2018
    April 2018
    March 2018

    Categories

    All
    52/96 Workholding
    Adhesive Workholding
    Aerospace Manufacturing
    Allen Benjamin
    ATC Alignment
    Blue Photon
    Boring
    Broaching
    BT Holders
    Carbon Fiber
    Case Study
    CAT Holders
    Chamfering
    Coatings
    Collet Nut
    Collets
    Composite Machining
    Countersink
    Deburring
    Decatur Diamond
    Definitions
    Diamond CVD
    Diamond PCD
    Dorian Tool
    Drilling
    Eastec
    End MIll
    EZ Burr
    Fixturing
    Fretting
    Geometry
    GMN Spindle
    Graphite Machining
    Grooving
    GWS Tool Group
    Hannibal Carbide
    High Speed Whirling
    Horn USA
    Hydraulic Toolholder
    IMTS
    Inserts
    JET Whirling
    ​Knurl Cutting
    Knurl Forming
    Knurling
    Mate Workholding
    Medical Device
    Medical Manufacturing
    MegaFORCE
    Modern Industries
    ModLOC
    MPower
    Nexturn Swiss
    North American
    Parlec
    Practical Machinist
    Pull Studs
    Reamers
    Retention Knobs
    Screw Threads
    ShrinkLOCKED
    Slot Cutting
    Slot Milling
    SpeedLOC
    Spindle Repair
    Spindle Wear
    Taps
    Taps: Bottom
    Taps: HSSE
    Taps: Plug
    Taps: Roll Form
    Taps: Taper
    Techniks
    Tech Tip
    Threadmilling
    Toolholders
    Troubleshooting
    Turbo-Whirling
    Turret
    USMTO
    Weldon Tool
    Workholding

    RSS Feed

Home
About
Principals
Contact
F&L Technical Sales Logo Square
F&L Technical Sales Inc.
326 Woodland Way
Russell, MA 01071
Established 1999
© 2022 F&L Technical Sales Inc.
All Rights Reserved
site design: Rapid Production Marketing
  • Home
  • About
  • Principals
    • Blue Photon
    • Dorian Tool
    • Hannibal Carbide
    • Heritage Cutter >
      • Brubaker
      • Data Flute
      • Decatur Diamond
      • Weldon
    • Horn USA
    • Mate Workholding
    • mPower Workholding
    • Techniks Group >
      • Techniks
      • Parlec Inc.
  • News
  • Contact
    • Promotions