Tag Archive for: HEM toolpaths

Titan USA 1K Follower Giveaway

*GIVEAWAY CLOSED – WINNER NOTIFIED*

As a thank you for reaching 1,000 followers on Instagram, we at Titan USA want to show our appreciation by giving all of our followers a chance to win a $150 Amazon gift card. With the addition of the Titan USA brand to the Harvey Performance Company family, we want to give our customers a chance to win.

How to Participate

All you need to do is follow the @titan.usa Instagram page, like the Giveaway post, and fill out the form below to gain an entry into the contest.

Entry Form

Official Contest Rules

Contest Dates:

  • The contest will run from September 12, 2022 to Semptember 19, 2022. Submit as many entries as you’d like! Entries that are submitted before or after the contest period will not be considered for the giveaway.

The Important Stuff:

  1. Follow Titan USA on Instagram
  2. Like the 1K Follower Giveaway post.
  3. Fill out the following form to make your initial entry.
  4. Additional entries will be given for:
    1. Creating an account on the Titan USA website.
    2. Leaving one comment tagging a friend on the Instagram post.
    3. Tagging @titan.usa in an Instagram post of your Titan USA tools.
    4. Leaving a review on a Titan USA product.

Prizes

All submissions and additional entries will be considered for the $150 Amazon gift card prize.

Winner of the giveaway will be chosen at random on September 22, 2022, notified on social media and be emailed the prize upon acceptance.

Full Details:

9/12/22

NO PURCHASE IS NECESSARY TO ENTER OR WIN. MAKING A PURCHASE WILL NOT INCREASE YOUR CHANCES OF WINNING. APPLICABLE ONLY IN THE UNITED STATES and CANADA. ENTRY INTO THIS SWEEPSTAKES CONSTITUTES ACCEPTANCE OF THESE OFFICIAL RULES. VOID WHERE PROHIBITED BY LAW.

By participating in the Harvey Performance Sweepstakes (the “Sweepstakes”), you agree to these official rules (the “Rules”), which are a contract, so read them carefully before participating. Without limitation, this contract includes indemnities to the Released Parties (defined below) from you and a limitation of your rights and remedies. You must follow these Rules to enter and be eligible to receive a prize in connection with the Sweepstakes.

DURATION:  Sweepstakes begins on September 12th, 2022 at 11 AM Eastern Daylight Time and ends September 19th, 2022 at 5 PM Eastern Daylight Time (“Sweepstakes Period”).  The computer clock of Harvey Performance Company, LLC (“Sponsor”) is the official time-keeping device for the Sweepstakes.

ELIGIBILITY: The Sweepstakes is open only to legal permanent residents of the United States (excluding Puerto Rico, and the U.S. Territories and Possessions) who are 21 years of age or older as of the date of entry. Employees, officers and directors of Sponsor along with its affiliates, subsidiaries, advertising, contest, fulfillment and marketing agencies, (collectively, “Promotion Parties”) their immediate families (parent, child, sibling & spouse and their respective spouses, regardless of where they reside) and persons living in the same households as such individuals (whether related or not) are not eligible to participate in the Sweepstakes. By participating, you agree to these Rules and to the decisions of the Sponsor, which are final and binding in all respects.  In addition, to be eligible to win, you must also execute and return Sponsor’s forms for you to: (i) consent to the use of your rights of publicity, (ii) assume all tax liabilities, (iii) waive all claims against Sponsor and Promotion Parties, and (iv) confirm your eligibility (collectively “Affidavits and Waivers”). This Sweepstakes is void in any jurisdiction not listed above and where prohibited by law, rule or regulation.

HOW TO ENTER: Follow the directions and complete the entry and submission form available at https://go.harveyperformance.com/l/186562/2022-07-12/2v8ly98 (the “Entry Form”), and following the Sponsor’s Instagram account.  Up to 5 additional entries can be made by providing e-mail addresses of friends that also fill out an entry form and follow Sponsor’s Instagram account.

ALTERNATIVE MEANS OF ENTRY: On a plain 3” x 5” card, legibly handprint or type your name, age, complete address, city, state, zip code, home phone number (including area code), and email address (if any). Then, mail your 3” x 5” card in a postage-affixed sealed envelope to:

428 Newburyport Turnpike, Rowley, MA 01969

If you do not provide an email address, we will call you if your name is selected. Otherwise, you will not be contacted regarding the outcome.

Mail-in entries must be postmarked by September 19th, 2022 and received by September 19th, 2022. No mechanically or programmatically reproduced entries are permitted. Each postcard is considered one (1) entry.  The information provided on such submitted 3” x 5” cards shall also be deemed part of the Entry Form.

PRIVACY POLICY:  Information collected in connection with this Sweepstakes will be used in accordance with Sponsor’s Official Privacy Policy (available at https://www.harveyperformance.com/privacy-policy/ and these Rules. In the event of any discrepancy between Sponsor’s Privacy Policy and these Rules, Sponsor’s Privacy Policy shall control and govern.

LIMITATIONS: Regardless of the method used to enter the Sweepstakes, either via the survey completion or mail-in or a combination of the two, the maximum number of entries allowed during the Sweepstakes is 6 per person.

Sponsor is not responsible for any entry that is lost, late, misdirected or undeliverable, whether due to system errors, omissions, interruption, deletions, defects, delay in operations or transmissions, theft or destruction or failures, faulty transmissions or other telecommunications malfunctions, entries not received resulting from any hardware or software failures of any kind, lost or unavailable network connections, failed, incomplete or garbled computer or telephone transmissions, typographical or system errors and failures, faulty trans-missions, technical malfunctions, or otherwise.

In the event of a dispute regarding the identity of the person submitting an entry, the entry will be deemed submitted by the authorized account holder at the time of entry. The authorized account holder is the natural person who is assigned to the account by Sponsor, the organization that is responsible for assigning accounts to customers. Potential winners may be required to show proof of being the authorized account holder.

Any attempt by an entrant to obtain more than the stated number of entries by using multiple/different email addresses, identities, registrations, logins, and/ or any other methods, including, but not limited to, automated entry, will void that entrant’s entries and that entrant may be disqualified from the Sweepstakes. Multiple participants are not permitted to share the same email address or Instagram account.

Sponsor will not verify receipt of entries for entrants. All entries submitted become the sole property of Sponsor. Sponsor reserves the right to disqualify those entries deemed to be inappropriate or in violation of this Sweepstakes (as defined solely by Sponsor).

Entries are void if they are incomplete, irregular or submitted improperly. Personal information (if any) collected through the Entry Form will be used only for purposes of (i) selecting and contacting the winners, and (ii) as identified in the Privacy Policy.

ODDS OF WINNING: The actual odds of winning will depend upon the actual number of total entries received for this Sweepstakes, regardless of the means of entry.

LIABILITY LIMITATION:  The Sponsor assumes no responsibility or liability for (a) lost, late, stolen, undelivered, inaccurate, incomplete, delayed, misdirected, damaged or garbled registrations, entries, URLs, or emails; (b) any incorrect or inaccurate entry information, or for any faulty or failed electronic data transmissions; (c) any unauthorized access to, or theft, destruction or alteration of entries or registrations at any point in the operation of this Sweepstakes; (d) any technical malfunction, failure, error, omission, interruption, deletion, defect, delay in operation or communications line failure, regardless of cause, with regard to any equipment, systems, networks, lines, cable, satellites, servers, computers or providers utilized in any aspect of the operation of the Sweepstakes; (e) inaccessibility or unavailability of the Internet or the Sponsor’s web site or any combination thereof or for computer hardware or software malfunctions, failures or difficulties, or other errors or difficulties of any kind whether human, mechanical, electronic, computer, network, typographical, printing or otherwise relating to or in connection with the Sweepstakes, including, without limitation, errors or difficulties which may occur in connection with the administration of the Sweepstakes, the processing of Entries, social networking posts, or registrations, the announcement of the prizes, or in any other Sweepstakes-related materials; or (f) any injury or damage to participants or to any other person’s computer which may be related to or resulting from any attempt to participate in the Sweepstakes. If, for any reason, the Sweepstakes (or any part thereof) is not capable of running as planned for reasons which may include, without limitation, infection by computer virus, tampering, unauthorized intervention, fraud, technical failures, or any other causes which may corrupt or affect the administration, security, fairness, integrity or proper conduct of this Sweepstakes, then the Sponsor reserve the right at their sole discretion to cancel, terminate, modify or suspend the Sweepstakes in whole or in part. If terminated, the Sponsor will award the prizes from among all non-suspect, eligible Entries received for the Sweepstakes up to the time of such action.

RELEASES: All participants, as a condition of participation in this Sweepstakes, agree to release, hold harmless and indemnify the Sponsor, its offers, directors, accountants, attorneys and agents (“Released Parties”) from and against any and all liability, claims, damages, or actions of any kind whatsoever for injuries, damages, or losses to persons or property which may be sustained, in whole or in part, directly or indirectly, in connection with (i) participation in any aspect of the Sweepstakes, (ii) the receipt, ownership or use of the prize awarded, including any travel associated with any prize, (iii) participant’s registration material on any related website, or (iv) any typographical or other error in these these Rules.

NO WARRANTIES: NEITHER SPONSOR NOR ANY OF THE RELEASED PARTIES HAVE MADE OR MAKE OR ARE RESPONSIBLE OR LIABLE FOR ANY WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, RELATIVE TO THIS SWEEPSTAKES OR A PRIZE, INCLUDING BUT NOT LIMITED TO, ITS QUALITY OR FITNESS OR MERCHANTABILITY, AND ALL PRIZES ARE TENDERED TO ENTRANTS ON AN “AS IS” BASIS.  THERE ARE NO WARRANTIES REGARDING ANY PRIZE OR THE USE OF THE GIFT CARD WITH AMAZON.

RANDOM DRAWING: One (1) prize winner(s) will be randomly selected for the Sweepstakes to receive a $150 electronic Amazon gift card. All decisions on all matters pertaining to the Sweepstakes are final. Sponsor reserves the right to substitute a prize of equal or greater value.

WINNER NOTIFICATION: Random selection of the potential prize winner will occur during the first week that immediately follows the Sweepstakes Period from among all eligible entries received. Prize drawing will be conducted at Sponsor’s headquarters. The prize winner will be notified by e-mail or regular mail, in Sponsor’s discretion, within 30 days from the date of the winner selection.

The designated prize winner will have 14 days from notification to claim the prize and return all release and eligibility forms. Sponsor and its affiliates, subsidiaries, employees, agents, officers and directors, advertising and promotion agencies, and their respective officers, directors, employees and their respective agents, will not be liable for unsuccessful efforts to notify a winner.

The prize will be delivered via e-mail. No prize transfer, assignment or substitution by winner permitted. All federal, state and local taxes, fees and surcharges on prizes are the sole responsibility of the prize winner. If the prize winner declines the prize, fails to claim the prize, is unavailable for prize fulfillment, fails to abide by the these Rules, or is ineligible, Sponsor may select an alternate winner from all remaining eligible entries.

By entering this Sweepstakes, each entrant gives his/her express permission to be contacted by the Sponsor by telephone, e-mail and/or postal mail for Sweepstakes purposes.

The winner, by acceptance of Prize, grants to Sponsor, and each of its respective designees, the right to publicize the winner’s name, address (city and state of residence), photograph, voice, statements and/or other likeness and prize information for advertising, promotional, trade and/or any other purpose in any media or format now known or hereafter devised, throughout the world, in perpetuity, without limitation and without further compensation, consideration, permission or notification, unless prohibited by law.

Before being declared a winner, each selected entrant will be required to sign an confirmation and acceptance confirming compliance with the these Rules and acceptance of the prize as offered. The confirmation and acceptance must be returned within 7 business days of the notification date indicated on the documents, unless otherwise stated, or the selected entrant will be disqualified and the prize forfeited.

THIRD PARTY & SOCIAL MEDIA:  This Sweepstakes is in no way sponsored by, endorsed by, associated with, or administered by Facebook, Instagram, Twitter, Whatsapp, Tumblr, Google, YouTube, WeChat, or WhatsApp (collectively “Social Media Sites”).  By entering this event, you agree to hold all Social Media Sites harmless for and from any potential claims you may have related to or arising out of this Sweepstakes.

MISCELLANEOUS CONDITIONS: Sponsor reserves the right at its sole discretion to cancel, terminate, modify or suspend the Sweepstakes.

Sponsor assumes no responsibility for any error, omission, interruption, deletion, defect, or delay in operation or transmission; communications line failure; theft or destruction of or unauthorized access to Sweepstakes entries or entry forms; or alteration of entries or entry forms. Sponsor reserves the right to correct clerical or typographical errors in promotional materials or any materials related to the Sweepstakes.

WINNER NAME: To obtain the name of the winner, send a request to [email protected]

CHOICE OF LAW AND JURISDICTION: This Sweepstakes is governed by the internal substantive laws of Nevada, without regard to its conflicts of law provisions.

5 Things to Know About Helical’s High Feed End Mills

Helical Solutions‘ High Feed End Mills provide many opportunities for machinists, and feature a special end profile to increase machining efficiencies. A High Feed End Mill is a High Efficiency Milling (HEM) style tool with specialized end geometry that utilizes chip thinning, allowing for drastically increased feed rates in certain applications. While standard end mills have square, corner radius, or ball profiles, this Helical tool has a specialized, very specific design that takes advantage of chip thinning, resulting in a tool that can be pushed harder than a traditional end mill.

Below are 5 things that all machinists should know about this exciting Helical Solutions product offering.

1. They excel in applications with light axial depths of cut

A High Feed End Mill is designed to take a large radial depth of cut (65% to 100% of the cutter diameter) with a small axial depth of cut (2.5% to 5% diameter) depending on the application. This makes them perfect for face milling, roughing, slotting, deep pocketing, and 3D milling. Where HEM toolpaths involve light radial depths of cut and heavy axial depths of cut, these utilize high radial depths of cut and smaller axial depths of cut.

2. This tool reduces radial cutting forces

The end profile of this tool is designed to direct cutting forces upward along the axis of the tool and into the spindle. This reduces radial cutting forces which cause deflection, allowing for longer reach tools while reducing chatter and other issues that may otherwise lead to tool failure. The reduction of radial cutting forces makes this tool excellent for use in machines with lower horsepower, and in thin wall machining applications.

3. High Feed End Mills are rigid tools

The design and short length of cut of these end mills work in tandem with the end geometry to produce a tool with a strong core, further limiting deflection and allowing for tools with greater reach lengths.

Push Harder in HEM With Helical Solutions’ High Feed End Mills

4. They can reduce cycle times

In high RDOC, low ADOC applications, these tools can be pushed significantly faster than traditional end mills, saving time and money over the life of the tool.

5. High Feed End Mills are well suited for hard materials

The rigidity and strength of High Feed End Mills make them excellent in challenging to machine materials. Helical’s High Feed End Mills come coated with Tplus coating, which offers high hardness and extended tool life in high temp alloys and ferrous materials up to 45Rc.

In summary, these tools with specialized end geometry that utilizes chip thinning and light axial depths of cut to allow for significantly increased feed rates in face milling, slotting, roughing, deep pocket milling, and 3D milling applications. The end profile of a High Feed End Mill applies cutting forces back up into the spindle, reducing radial forces that lead to deflection in long reach applications. Combining this end geometry with a stubby length of cut results in a tool that is incredibly rigid and well suited for harder, difficult to machine materials.

High Efficiency Milling for Titanium Made Easy With Helical’s New HVTI Cutter

Titanium is a notoriously difficult material to machine, especially in aggressive toolpaths, such as those associated with High Efficiency Milling (HEM). Helical Solutions’ new line of tooling, the HVTI-6 series of end mills for titanium, is optimized specifically for this purpose, and proven to provide 20% more tool life than a competitor’s similar tool.

At face level, these new Helical end mills for titanium feature corner radius geometry, 6 flutes, and are Aplus coated for optimal tool life and increased cutting performance. But there is much more to these end mills than the typical geometry of standard 6 flute tools. The HVTI-6 was designed with a combination of a unique rake, core, and edge design that give it a leg up over standard 6 flute tools for milling titanium while cutting HEM toolpaths. Click here to watch the HVTI-6 in action!

End Mills for Titanium

The design of the HVTI-6 was the result of significant testing by the Harvey Performance Company Innovation and New Product Development teams. These teams spent many months testing tools, doing in-depth analysis on materials and tool geometry, and pushing these tools through dozens of hours in the cut at testing sites across the country.

The new HVTI-6 cutter experienced higher metal removal rates (MRR) and 20% longer tool life while performing HEM in Titanium when compared to a standard 6 flute tool offered by a Helical Solutions competitor. This type of tool life improvement will produce huge cost savings on tooling, as well as shortened cycle times and lower cost per part.

Helical HVTI Titanium

The Harvey Performance Innovation team targeted Titanium grade Ti6Al4V for their testing, which accounts for the vast majority of the Titanium being machined in North America. The test part was designed and programmed to allow for a more defined agility test of the tool, taking the tool into key geometry cutting exercises like tight corners, long straight line cuts, and rapid movement.

Many hours were spent with Lyndex-Nikken, manufacturers of high-quality rotary tables, tool holders, and machining accessories, at their Chicago headquarters. By working with the team at Lyndex-Nikken, the Harvey Performance Company team was able to test under optimal conditions with top-of-the-line tool holders, work holding, and machining centers. Lyndex was also available to provide their expert support on tool holding techniques and were an integral part of the testing process for these tools. Video of the impressive test cuts taken at the Lyndex facility can be seen below.

WATCH THE HVTI IN ACTION

In these tests, the HVTI end mills for titanium was able to run HEM toolpaths at 400 SFM and 120 IPM in Ti6Al4V, which served as the baseline for most of the testing.

While the standard 6 flute tools offered by Helical will still perform to high standards in Titanium and other hard materials (steels, exotic metals, cast iron), the HVTI-6 is a specialized, material-specific tool designed specifically for HEM toolpaths in Titanium. Advanced speeds and feeds for these new tools are already available in Machining Advisor Pro, and the complete offering is now available in the Helical CAM tool libraries for easy programming.

To learn more about the HVTI 6 Flute End Mills for Titanium, please visit the Helical Solutions website. To learn more about HEM techniques, download the HEM Guidebook for a complete guide on this advanced toolpath.

Axis CNC Inc. – Featured Customer

Featured Image Courtesy of Axis CNC Inc

Axis CNC Inc was founded in 2012 in Ware, Massachusetts, when Dan and Glenn Larzus, a father and son duo, decided to venture into the manufacturing industry. Axis CNC Inc has provided customers with the highest quality manufacturing, machining, and programming services since they’ve opened. They specialize in manufacturing medical equipment and have a passion for making snowmobile parts.

We sat down with Axis CNC Inc to discuss how they got started and what they have learned over there years in the manufacturing world. Watch our video below to see our full interview.

Show Us What You #MadeWithMicro100

Are you proud of the parts you #MadeWithMicro100? Show us with a video of the parts you are making, the Micro 100 Tool used, and the story behind how that part came to be, for a chance to win a $1,000 Amazon gift card grand prize!

With the recent addition of the Micro 100 brand to the Harvey Performance Company family, we want to know how you have been utilizing its expansive tooling offering. Has Micro 100’s Micro-Quik system helped you save time and money? Do you have a favorite tool that gets the job done for you every time? Has Micro 100 tooling saved you from a jam? We want to know! Send us a video on Instagram and show us what you #MadeWithMicro100!

How to Participate

Using #MadeWithMicro100 and @micro_100, tag your video of the Micro 100 tools machining your parts on Instagram or Facebook. Remember, don’t share anything that could get you in trouble! Proprietary parts and trade secrets should not be on display.

Official Contest Rules

Contest Dates:

  • The contest will run between December 5, 2019 to January 17, 2020. Submit as many entries as you’d like! Entries that are submitted before or after the contest period will not be considered for the top prizes (But we’d still like to see them!)

The Important Stuff:

  1. Take a video of your Micro 100 tool in action, clear and visible.
  2. Share your video on social media using #MadeWithMicro100 and tagging @Micro_100.
  3. Detail the story behind the project (tool number(s), operation, running parameters, etc.)

Prizes

All submissions will be considered for the $1,000 Amazon gift card grand prize. Of these entries, the most impressive (10) will be put up to popular vote. All entries put up to vote will be featured on our new customer testimonial page on our website with their name, social media account, and video displayed for everybody to see.

We’ll pick our favorites, but the final say is up to you. Public voting will begin on January 21, 2020, and a winner will be announced on January 28, 2020.

The top five entries will be sent Micro 100’s Micro-Quik tool change system with a few of our quick change tools. The top three entries will be offered a spot as a “Featured Customer” on our “In The Loupe” blog!

The Fine Print:

  • Please ensure that you have permission from both your employer and customer to post a video.
  • All entries must be the original work of the person identified in the entry.
  • No purchase necessary to enter or win. A purchase will not increase your chances of winning.
  • On January 28, 2020, the top 5 winners will be announced to the public. The Top 5 selected winners will receive a prize. The odds of being selected depend on the number of entries received. If a potential winner cannot be contacted within five (5) days after the date of first attempt, an alternative winner may be selected.
  • The potential winners will be notified via social media. Each potential winner must complete a release form granting Micro 100 full permission to publish the winner’s submitted video. If a potential winner cannot be contacted, or fails to submit the release form, the potential winner forfeits prize. Potential winners must continue to comply with all terms and conditions of these official contest rules, and winning is contingent upon fulfilling all requirements.
  • Participation in the contest constitutes entrants’ full and unconditional agreement to and acceptance of these official rules and decisions. Winning a prize is contingent upon being compliant with these official rules and fulfilling all other requirements.
  • The Micro 100 Video Contest is open to residents in US and Canada who are at least 18 years old at the time of entry.

How to Select a Spindle

When trying to develop efficient processes, many machinists and programmers turn to tool selection first. It is true that tooling can often make a big difference in machining time, and speeds and feeds, but did you know that your machine’s spindle can have an equally impactful effect? The legs of any CNC machine, spindles are comprised of a motor, a taper for holding tools, and a shaft that will hold all of the components together. Often powered by electricity, spindles rotate on an axis which receives its input from the machine’s CNC controller.

Why is Choosing the Right Spindle Important?

Choosing the right spindle to machine your workpiece with is of very high importance to a successful production run. As tooling options continue to grow, it is important to know what tooling your spindle can utilize. Large diameter tools such as large end mills or face mills typically require slower spindle speeds and take deeper cuts to remove vast amounts of material. These applications require supreme machine rigidity and require a spindle with high torque.

Contrastingly, smaller diameter tools will need a higher-speed spindle. Faster speeds and feeds deliver better surface finishes and are used in a variety of applications. A good rule of thumb is that an end mill that is a half inch or smaller will run well with lower torque.

Types of CNC Spindles

After finding out what you should look for in a spindle, it is time to learn about your different options. Spindles typically vary by the type, style of the taper, or its size. The taper is the conical portion of the tool holder that fits inside of the opening of the spindle. Every spindle is designed to mate with a certain taper style and size.

properly selecting a spindle

CAT and BT Holders

This is the most widely utilized holder for milling in the United States. Referred to as “V-flange holders,” both of these styles need a retention knob or pull stud to be secured within the machine spindle. The BT (metric style) is popular overseas.

HSK Holders

This type of holder is a German standard known as “hollow shank taper.” The tapered portion of the holder is much shorter than its counterparts. It also engages the spindle in a different way and does not require a pull stud or retention knob. The HSK holder is utilized to create repeatability and longer tool life – particularly in High Efficiency Milling (HEM) applications.

All of these holders have benefits and limitations including price, accuracy, and availability. The proper selection will depend largely on your application requirements.

Torque vs. Horsepower

Torque is defined as force perpendicular to the axis of rotation across a distance. It is important to have high torque capabilities when using an end mill larger than ½ inch, or when machining a difficult material such as Inconel. Torque will help put power behind the cutting action of the tool.

Horsepower refers to the amount of work being done. Horsepower is important for smaller diameter end mills and easy-to-machine materials like aluminum.

You can think of torque as a tractor: It can’t go very fast, but there is a lot of power behind it. Think of horsepower as a racecar: It can go very fast but cannot pull or push.

Torque-Horsepower Chart

Every machine and spindle should come with a torque horsepower chart. These charts will help you understand how to maximize your spindle for torque or horsepower, depending on what you need:

Haas spindle horsepower and torque chart
Image Source: HAAS Machine Manual

Proper Spindle Size

The size of the spindle and shank taper corresponds to the weight and length of the tools being used, as well as the material you are planning to machine. CAT40 is the most commonly used spindle in the United States. These spindles are great for utilizing tools that have a ½ inch diameter end mill or smaller in any material. If you are considering using a 1 inch end mill in a material like Inconel or Titanium, a CAT50 would be a more appropriate choice. The higher the taper angle is, the more torque the spindle is capable of.

While choosing the correct tool for your application is important, choosing a tool your spindle can utilize is paramount to machining success. Knowing the amount of torque required will help machinists save a lot of headaches.

Harvey Performance Company to Participate at Autodesk University 2019

August 20, 2019 (Rowley, MA) – Harvey Performance Company, a leading provider of specialized cutting tools for precision machining applications, is excited to participate as a presenter at Autodesk University – Vegas 2019. This event will take place from November 18-21 in Las Vegas, NV at the Sands Convention Center. Autodesk University – Vegas is a four-day event which connects 10,000+ professionals from construction, manufacturing, architecture, engineering, and media creation.

Harvey Performance Company will host an instructional demo titled Boosting Shop Productivity by Applying High Efficiency Milling Techniques on Wednesday, November 20th from 9:15  – 10:15 AM PST. Scott Tiehen, Vice President of Innovation, and Don Grandt, National Application Engineer, will be on hand to host what is sure to be a great learning experience.

If you have already registered for AU Vegas 2019, you can sign-up for the Harvey Performance Company session by clicking here.

If you have not registered but are interested in learning more about this event, please visit https://www.autodesk.com/autodesk-university/conference/las-vegas/overview

Autodesk University 2019

When to and Not to Use Drop Hole Allowance

Dovetail Cutters are cutting tools that create a trapezoidal-type shape, or a dovetail groove, in a part. Due to the form of these tools, special considerations need to be made in order to achieve long tool life and superior results. This is particularly true when machining O-ring grooves, as this operation requires the tool to drop into the part to begin cutting. Using an appropriate tool entry method, specifically understanding when drop hole allowance is (and is not) needed, is important to keep common dovetail mishaps from occurring.

What is a Drop-Hole?

When designing parts featuring O-ring grooves, the consideration of drop-hole allowance is a pivotal first step. A drop-hole is an off-center hole milled during the roughing/slotting operation. This feature allows for a significantly larger, more rigid tool to be used. This is because the cutter no longer has to fit into the slot, but into a hole with a diameter larger than its cutter diameter.

drop hole allowance

Why consider adding a Drop-Hole?

When compared to tools without drop-hole allowance, tools with drop-hole allowance have a much larger neck diameter-to-cutter diameter ratio. This makes the drop-hole tools far stronger, permitting the tool to take heavy radial depths of cut and fewer step-overs. Using a drop-hole will allow the use of the stronger tool, which will increase production rate and improve tool life.

Machining Operation with Drop-Hole Allowance

drop hole allowance

A maximum of 4 radial passes per side are needed.

When Not to Drop Hole

Drop-holes are sometimes not permitted in a design due to the added stress concentration point it leaves. Common examples for where a drop-hole would not be allowed include:

  • In high pressure applications
  • In seals requiring a high reliability
  • Where dangerous or hazardous fluids are being used

The issue with drop-hole allowance is that the additional clearance used for tool entry can create a weak spot in the seal, which can then become compromised under certain conditions. Ultimately, drop-hole allowance requires approval from the customer to ensure the application allows for it.

Machining Operation Without Drop-Hole Allowance

drop hole allowance

A maximum of 20 radial passes per side are needed.

Drop-Hole Placement

When adding a drop-hole to your part, it is important to ensure that the feature is placed correctly to maximize seal integrity. Per the below figure, the drop-hole should be placed off center of the groove, ensuring that only one side of the groove is affected.

drop hole allowance

It is also necessary to ensure that drop-hole features are put on the correct side of the groove. Since O-rings are used as a seal between pressures, it is important to have the drop-hole bordering the high pressure zone. As pressure moves from high to low, the O-ring will be forced into the fully supported side, allowing for a proper seal (See image below).

drop hole allowance

John Force Racing – Featured Customer

John Force Racing has been dominating the motorsports world for over 30 years, winning 20 championships and hundreds of races in the National Hot Rod Association (NHRA) drag racing series. John Force Racing features both Funny Car and Top Fuel teams, and just recently in 2017 they won both the Funny Car and Top Fuel championships in the same season.

John Force Racing invested in Force American Made to develop and create parts and components that would help drive all the teams to success and safety. The 84,000 square foot shop is located in Brownsburg, Indiana (just outside of Indianapolis) and is the heartbeat of John Force Racing. Thousands of parts are forged by Force American Made and its team of employees every season giving the team a competitive edge that has led to the team’s on-track success.

The Force American Made team has relied on Helical Solutions tooling to get the best performance and quality out of their CNC mills for years. The Harvey Performance Company team was invited out to Indiana to take a tour of Force American Made and spend some time with Tom Warga, Lead Machinist, to talk with him about his experiences with Helical Solutions tooling, his first time trying Machining Advisor Pro, the success they have had using the new Helical tool libraries for Mastercam, and the value their distributor, Dolen Tool, brings to the shop. Check out the video interview below to see the inner-workings of Force American Made and how Helical Solutions tooling has contributed to the success of this motorsports dynasty.

Chipbreaker vs. Knuckle Rougher End Mills

Knuckle Roughers and Chipbreakers are common profiles found on roughing end mills that, while fairly similar in appearance, actually serve different functions. Chipbreakers refer to the notches along the cutting edge of a tool that work to break up chips to prevent common evacuation mishaps. Knuckle Roughers refer to the serrated cutting edge of a tool, which works to enhance cutting action for an overall smoother operation.

Determining the appropriate style of tool is a very important first step to a successful roughing application.

Increase Your Roughing Efficiency With Helical Solutions’ Chipbreakers

Understanding the Two Styles

Chipbreaker End Mills

To aid chip evacuation, Chipbreaker End Mills feature a notched profile along the cutting edge that break down long chips into smaller, more manageable pieces. These tools are often utilized in aluminum jobs, as long, stringy chips are common with that material.

Each notch is offset flute-to-flute to enhance the surface finish on the part. This works by ensuring that as each flute rotates and impacts a part, following flutes work to clean up any marks or extra material that was left behind by the first pass. This leaves a semi-finished surface on your part.

In addition to improving chip control and reducing cutting resistance, these tools also help in decreasing heat load within the chips. This delays tool wear along the cutting edge and improves cutting performance. Not only are these tools great for hogging out a great deal of material, but they can be utilized in a wide array of jobs – from aluminum to steels. Further, a machinist can take full advantage of the unique benefits this tool possesses by utilizing High Efficiency Milling toolpaths, meant to promote efficiency and boost tool life.

Knuckle Roughers

Knuckle Rougher End Mills have a serrated cutting edge that generates significantly smaller chips than a standard end mill cutting edge. This allows for smoother machining and a more efficient metal removal process, similar to Chipbreaker End Mills. However, the serrations chop the chips down to much finer sizes, which allows more chips into the flutes during the evacuation process without any packing occurring.

Designed for steels, Knuckle Rougher End Mills are built to withstand harder materials and feature a large core. Because of this, these tools are great for roughing out a lot of material. However, due to the profile on the cutting edge, tracks along the wall can sometimes be left on a part. If finish is a concern, be sure to come in with a finishing tool after the roughing operation. Knuckle Roughers have proven the ability to run at higher chip loads, compared to similar end mills, which makes this a highly desired style for roughing. Further, this style of rougher causes a lot of heat and friction within the chips, so it’s important to run flood coolant when running this tool.

Key Differences Between Knuckle Roughers & Chipbreakers

While the two geometries offer similar benefits, it’s important to understand the distinct differences between them. Chipbreakers feature offset notches, which help to leave an acceptable finish on the walls of a part. Simply, the material left on an initial flute pass is removed by subsequent passes. A Knuckle Rougher does not feature this offset geometry, which can leave track marks on your part. Where part finish is of upmost importance, utilize a Knuckle Rougher to first hog out a great deal of steel, and work a final pass with a Finishing End Mill.

A unique benefit of Knuckle Roughers is the grind they possess – a cylindrical grind, compared to a relieved grind of a Chipbreaker End Mill. Because of this, Knuckle Roughers are easier to resharpen. Therefore, instead of buying a new tool, resharpening this profile is often a cheaper alternative.