Since the 2020 pandemic, many of our customers are considering what it takes to transition their shops to automation. Whether they are using cobots or full automation cells, questions regarding the necessary workholding often come up in conversation. With the increase in demand for autonomous workholding in mind, we have developed standard automation packages for a variety of HAAS machine tools featuring the best workholding products the industry has to offer. In this piece, we are going to walk through each component featured in the workholding system and discuss their benefits.
The Workholding Foundation
As our friends at Advanced Machine and Engineering say, every workholding system needs to start with a solid foundation. There are many ways to achieve a repeatable solution for your mill, and a fixture plate with a standard grid pattern is certainly one of them. Our foundation plates for HAAS machine tools feature a 2" grid pattern with 1/2-13 tapped holes and .501" ID bushings to allow for accurate and fast setup change over between jobs. It locates straight into the T slots of your machine tool and is held flat within .001" over the entire length. This foundation is absolutely vital to any high mix shop that is tired of wasting setup time with traditional t-slots. Many other workholding companies have solid options for repeatable setups, and we would be foolish to say our system is the only one available. You can use RockLock bases, VERO-S workholding, and other systems to achieve this foundational setup for your automation solution.
The 4th Axis Trunnion
Our bread and butter, the original Stallion Trunnion was originally made for a simple Kurt vise. Today, it's been outfitted with a variety of autonomous workholding systems. We are using the Stallion 9/23 in this setup, which is perfect for reaching multiple sides of your parts and keeping your robot from handling your workpiece more than necessary. It is cast from class #35 iron, making it rigid and capable of superior vibration damping to traditional steel. This system is also outfitted with pneumatic lines to feed air to your vises as well as the necessary rotary union on the HRT-210 to keep everything compact and tangle free.
The Workholding Vises
The SCHUNK KSP3 160 pneumatic vise is, in our humble opinion, the best pneumatic vise on the market for automation. If you are looking for a long lasting, high clamping force vise for your robotics solution, this is the line to go with. It has 45kN of clamping force with .01mm repeatability and can be mounted straight to the deck of our Stallion 9/23. All of the pneumatic lines, rotary unions, and other fittings will be supplied and tested by our team before shipment.
Optional Braking System
While this option is typically used on our larger trunnion models, it is a great solution if you for-see needing to take heavy, off center cuts on your fixture. When machining far from centerline of rotation or from the faceplate of the rotary table, it is often the case that the standard rotary table brake needs additional support to eliminate any movement while machining. Our TS1200 hydraulic braking system utilizes a squeeze bushing design, an outboard support held to .0003" of the rotary table center height, and an air over oil booster. The air over oil booster connects straight to the solenoid valve of the rotary table, making any additional machine parameter changes unnecessary.
If you or one of your customers is in need of workholding support and consultation for a robotics or automation application, do not hesitate to reach out to our team on this website. Thanks for reading!
From time to time or very often for some shops, a batch of parts comes through the door that not only requires multi-op machining, but also a high volume solution. The traditional way to handle this is to design 3 or 4 special fixtures to hold this part for each operation and manually rotate the workpiece until the finished part is complete. Today, with the growing interest and market for 5 axis machines, this process can be eliminated relatively easily, but not for an inexpensive price tag. So what does one do when presented with a high volume job that requires multiple operations? Using a tombstone style trunnion table with flexible and repeatable workholding, high volume can be achieved in your 3 axis mill affordably and smoothly.
Today we are discussing the combination of 5th Axis Workholding products, Lyndex Nikken rotary tables, and the Stallion Tombstone fixture. Last week we put out a new animation that featured products from all three of these companies. You can view this video below for context.
We are using the Lyndex Nikken CNC 260 for this project as it has a weight capacity of 673 lbs, which is plenty to rotate our completed fixture with ease. In order to maximize volume, we are using a 6" Stallion tombstone fixture. This product is made from class 35 cast iron, making it a rigid solution with minimal chatter. Tombstone fixtures can be made to virtually any length and with any face size required for your workholding and workpiece. We are going to break down each piece of this fixture what discuss the role it plays in this productivity beast.
First, let's talk about the rotary table. This CNC 260 from Lyndex Nikken has a center height of 170mm, a 260mm faceplate with 8 key slots for mounting, and a weight capacity, as stated earlier, of 673 lbs. Because we decided to go with the rocklock bases, we had no choice but to include a 2.5" center height. The trunnion table fixture locates into the through hole in the faceplate of the rotary table and mounts using t-nuts and SHCS.
Moving on to the trunnion fixture itself, this is a 6" tombstone measuring 36" in length and of course features the mounting pattern for the rocklock bases from 5th Axis. This tombstone is made entire from class 35 cast iron, making it extremely rigid and capable of absorbing vibration. These features help to eliminate chatter and flex. It also features the TS1200 hydraulic braking system, which allows for heavy, off center milling and drilling with its 500 ft. lbs. of clamping torque. In this application we decided to go with the RL52S-4560 RockLock bases as well as the V75100X Self-Centering Vises. These vises offer plenty of clamping range to support the workpieces.
Combining products from Lyndex Nikken, Martin Trunnion Tables, and 5th Axis can potentially save you hundreds of thousands of dollars that would be spent on a 5 axis mill. Reach out to us today for a free consultation on improving your 3 axis mill with a complete 4th axis workholding solution.
We often work and collaborate with our partners, Lyndex Nikken, to provide fixtures to our mutual customers. In this blog post we are going to run through some of our most commonly use applications that feature both the Stallion Trunnion Table and the line of Nikken rotary tables. The rigidity and immense clamping torque of the Nikken rotary table, when paired with our products, offers the perfect 4th axis solution to your vertical machining center. Our first highlighted fixture is the Stallion 9/20 attached to the Lyndex Nikken CNC 302. While a rotary table of this size is not needed to rotate this smaller trunnion table fixture, it is what the customer had purchased, so we adapted the center height of the outboard support to meet that of the rotary table. We are also using paws workholding clamps, which offer an affordable, low profile solution to CNC workholding. It is also worth noting that the combined clamping torque of the CNC 302 and the TS1200 hydraulic braking system make this workholding solution extremely rigid. The beauty of this design is its ability to rotate to all of the five sides of the workpiece that need machined. Watch the animation below for a visual representation of this concept:
The next concept features the Lyndex Nikken CNC 180 and the Stallion Tombstone. In this case, we are utilizing the Delta IV Compact vise and the Stallion Tombstone in order to maximize part density. In this case, we are left with up to eight finished parts each cycle. The tombstone style trunnion table can be made to virtually any length and can be manufactured with 4", 6", 8" or 10" faces. The faceplate of the CNC180 rotary table has 4 t-slots, therefore, a 4-holed, 90 degree pattern was machined into the endplate of the trunnion table to allow for immediate and easy installation when the product arrived at the customer's plant. This design also features a riser block, which allows for full, 360 degree rotation of the fixture when inserting blanks into the the set of cnc vises. Watch the animation below for a visual of this:
In recent years, pneumatic clamping has become a very popular feature to pair with a 4th axis solution. Pneumatic clamping opens manufacturers up to the benefits of automated part loading and more accurate clamping solutions. In this demonstration, we are featuring the Stallion 9/20 Trunnion Table, the Nikken CNC 302 rotary table, and the SCHUNK Vero-S pneumatic clamping solution.
Aside from some of our custom made products, our standard Stallion models with a two inch grid pattern offer immense setup flexibility and repeatability. By including a grid pattern on a 4th axis fixture, the setup and fixturing possibilities greatly expand. Many of the workholding companies that we work with offer products that will easily mount and locate on this two inch grid pattern, such as 5th Axis, AME, Triag International, and many others. Overall, the Stallion Trunnion Table and Lyndex Nikken rotary tables offer a great pair to introduce your manufacturing process to the benefits of 4th axis machining. For more information, visit this page: https://www.trunniontable.com/lyndexnikken.html
Compact, versatile 4th Axis Solution attached to a KOMA RBS-160R
We have been working closely with our partners, KOMA Precision, for years to build fixtures for manufacturers using their rotary tables. Today we are going to review some of the workholding solutions that we have put together and the applications that these designs are best used for. The first concept involves the RBS-160R rotary table, the Stallion 5/18 Trunnion Table, and the Orange Vise Delta IV compact vise. The Stallion 5/18 is primarily designed for smaller rotary tables, making it the perfect fixture for this particular model. Orange Vise also offers ball receivers, which we are using here, to allow for fast and repeatable reorientation of the Deltav IV vise. With that said, this 4th axis fixture can be used for two, smaller parts or one large part when the vises are turned 90 degrees.
4th Axis Pneumatic Clamping Fixture Featuring SCHUNK Workholding
Autonomous clamping added to the 4th Axis is often the perfect solution to a fully automated vertical milling machine. Our partners, SCHUNK, offer a wide range of pneumatic clamping products that take the efficiency and productivity of our products to a different level. Here we are featuring the SCHUNK KSP-160 PLUS pneumatic vises, the Stallion 9/20 Trunnion Table, and the KOMA RWA-200. While you can't see it in these renders, a rotary union resides on the back end of the rotary table, which keeps the air lines from tangling while the 4th axis Stallion is rotating. Pneumatic clamping allows for more precise part location, resulting in tighter tolerances, less operator error, and the possibility of using a robotics solution.
Stallion 9/23 Trunnion Table with Triag Int. Workholding
When building 4th Axis Workholding fixtures, it is often a priority to come up with a solution that can be used for a variety of parts. The goal is often for these fixtures to be a universal solution for all of the customer's parts, not just one. With that said, modular workholding devices are often utilized to allow for Immense setup flexibility. Triag International Workholding provides a modular workholding system that accomplishes this. Their "power clamps" can be moved anywhere along a serrated base rail, allowing for parts of any length or quantity to be machined. They can also be mounted on standard, two inch grid, allowing you to use the fixtures that you already have in house. We are utilizing the RWA-200 in this concept, which allows for an incredible 550 lbs, leaving us assured that our entire assembly will be easily rotated by the KOMA indexer. Check out this animation for a representation of this concept:
Shelf Unit Trunnion Table attached to RBS-160R
If you own a vertical machining center, you will know that it is often difficult to justify purchasing a fixture that will take up your entire machine table. We developed the shelf unit trunnion tables out of pure necessity: we needed something small that was still just as efficient and productive as our standard, but longer units. Here, we are featuring the KOMA RBS-160R with single, double, triple, and 4-sided unit trunnion tables. The single and double sided configurations feature the rocklock bases from 5th axis workholding along with the V552 self centering vises. The 3 and 4 sided models instead feature the V5100X vise; this style is best suited for smaller, high volume parts.
To learn more about 4th Axis Solutions for KOMA Precision Rotary Tables, visit this page: Complete 4th Axis Solutions: KOMA Precision
While the Stallion Trunnion Table can be designed and manufactured for any CNC rotary table on the market, we have more experience making fixtures for HAAS rotary tables than any other brand. We are often faced with limitations due to machine table size, machine travel and rotary table capabilities. In this post we are running through potential 4th axis applications specifically for your HAAS rotary tables and how they resolved certain limitations.
Stallion 9/23 Trunnion Table With HRT-210 Rotary Table
In our first workholding solution, we are featuring the HRT-210 and the Stallion 9/23. In this case, we were faced with a job that included many parts at many different sizes. With that said, we knew we needed to use a modular workholding system that would allow us to machine parts at many different lengths. The solution: Triag International Workholding. This vise system features a base rail that allows for the clamping modules to be moved to different positions, which creates immense setup flexibility as the Triag product can be used for a wide variety of parts. The deck of the trunnion table has a two inch grid pattern with hardened bushings in every other hole, which works seamlessly with the triag rail and power clamps. On the support end of the fixture resides our TS400PNU braking system. At over 400 ft. lbs of clamping torque, this pneumatic brake keeps the trunnion table extremely rigid when making heavy, off center cuts to the workpiece. While this animation instead features a KOMA Precision Rotary Table, it displays this concept perfectly:
Stallion 9/20 Trunnion Table With HRT-160 Rotary Table
The second setup features the HRT-160 and the Stallion 9/20 Trunnion Table. One of our most often faced obstacles in fixture design is making sure that the customer's parts can be rotated 360 degrees. The HRT-160 has a center height of just 5 inches, which prompted us to provide a 1" riser block for this customer's rotary table while simultaneously adjusting our outboard support center height to match this 6 inch mark. This adjustment allowed for our customer's parts, along with the 5th Axis V552 vises, to be rotated 360 degrees. This design also features our TS1200 Hydraulic braking system, which has 500 ft. lbs of clamping torque at 100 PSI. Similarly to the TS400PNU from the previous setup, this feature is designed to allow for heavy, off center milling and drilling of the customer's workpiece.
Stallion Triangle Trunnion Table With HRT-310 Rotary Table
Our last fixture highlighted in this post features a HAAS HRT-310 with a Stallion Triangle Trunnion Table attached. This design again features the Triag International Rail and Power Clamps. The triangle configuration offers the immense benefit of tool clearance. Because the trunnion table features three sides on 60 degree angles as opposed to four sides on 90 degree angles, there becomes less concern about investing in longer tools. The bolt-hole pattern on the end plate of the fixture is customized for the HRT-310, allowing the manufacturer to easily insert and remove the trunnion when necessary, Additionally, the entire assembly resides on a baseplate, which results in a very short and simple setup time.
All of these fixtures offer similar benefits for different situations: less handling and setup time, more machining time. This method of lean manufacturing results in greater machine output, as well as greater employee output.
Stop Handling, Start Machining.
Samchully Workholding offers a wide variety of rotary table options for vertical machining centers. Martin Trunnion Tables often supplies workholding fixtures for these units, greatly increasing their productivity and versatility. In this week's post we are going to breakdown a few of our favorite applications featuring samchully rotary tables and why each of them is especially unique.
Samchully S-170 Rotary Table with Stallion 9/20 Trunnion Table
The first workholding solution includes the S-170 with a Stallion 9/20 Trunnion Table fixture attached. This design was made specifically for the Doosan DNM-4500 machine tool. The fixture plate bolts directly to the machine table, providing a flexible and repeatable solution for all of the your fixturing needs. Above that, the trunnion assembly resides on a baseplate which provides ease of transportation in and out of the machine tool. Underneath of the rotary table, you will find a 1" riser, which is there to provide full 360 degree rotation of the working trunnion surface. The deck of the trunnion includes the Jergens fixture pro cnc vises, making this a perfect solution for small, high production parts:
SAMCHULLY S-250 ROTARY TABLE WITH STALLION 9/23 TRUNNION TABLE
There are often times when a 4th CNC operation must be completed on a different workholding device or machine tool. The following fixture solves this issue and leaves you with a completed part every cycle. This setup was built specifically for the Doosan DNM-5700 and features a Stallion 9/23 Trunnion Table attached to a Samchully S-250 Rotary Table. Similarly to the previous setup, here we have a fixture plate designed for the DNM-5700 machine table with a baseplate and 4th Axis assembly residing on its surface. Aside from the large amount of time saving that comes from a 4th axis solution, the additional benefit of this cnc fixture is the vise that sits to the left of the 4th axis assembly. This additional allows for the machining of an additional operation, independent from the machining that takes place on the trunnion table. As stated, this leaves the operator with a completed part each cycle,
eliminating the need to take the part to a different machine for the last operation. Again, this piece sits on a small baseplate that can be easily removed from the fixture plate of the DNM-5700. Our workholding device is the PCV vise line from Samchully Workholding, which comes in a variety of sizes:
SAMCHULLY S-320 ROTARY TABLE WITH STALLION TOMBSTONE
Our last 4th axis solution features the Samchully S-320 rotary table with a Stallion 6" Tombstone attached. This setup was designed specifically for the Doosan DNM 6700. This setup, along with the previous two, features a TS1200 hydraulic braking system. This brake, designed and manufactured by Martin Trunnion Tables, is purposed to keep the 4th axis fixture from flexing and rotating during heavy, off center machining. In terms of workholding, we went with the CDV centering vises from Advanced Machine and Engineering. This 4th axis solution is perfect for high quantity jobs.
Here at Martin Trunnion Tables, we frequently make fixtures for a variety of machine tools and rotary tables, including Doosan and Samchully Workholding. To view more example fixtures such as these, visit our 4th axis solutions page exclusive to Samchully Rotary Tables.
We are extremely excited to announce that we are now offering tombstones for Horizontal Machining Centers. These CNC Tombstone fixtures can be made in a variety of shapes, sizes, and materials:
AMROK tombstones are designed to hold the industry's tightest tolerances for flatness, parallelism, perpendicularity, surface finish and hole location. These CNC machining fixtures can be made specific to any customer's workholding solution, including Schunk, 5th Axis, Mitee-Bite, Jergens, Paws, and many other workholding brands. The tooling columns also come in a variety of shapes, including Cubes, Cross-Columns, Double Angles, Triangles, Hexagons, and Octagons. With this many configurations available, our goal is to have a tooling solution that fits all of your CNC machining needs.
There are also a variety of materials available. The workholding devices can be made in Aluminum, Cast Iron, Steel, or Epoxy Mineral. We are also offering industry standard, 2-inch grid patterns, which utilize hardened inserts and bushings to provide longevity and durability. These fixtures are guaranteed to be flat within .0005", parallel within .0005", and perpendicular within .0008".
As previously mentioned, these tooling columns pair beautifully with all of your most commonly used workholding brands, such as Mitee-bite, Schunk, 5th Axis, Jergens, Paws, Triag and more! See below for possible turnkey solutions:
Please reach out to us to discuss the most effective and appropriate tombstone solution for your horizontal machining center!
In this week's highlighted CNC 4th Axis fixture, we are utilizing PAWS Workholding Wedge Clamps, the Stallion 9/20 Quick Change, the Lyndex Nikken CNC 302 Rotary Table and Jergens Ball Lock Workholding. Our main concern with this setup was cutting out time consuming setups and increasing part density. Prior to utilizing the tools mentioned above, our customer was machining just one part and one setup at a time. This particular part has 5 angles that need face-milled, as well as drilled and tapped. We were able to cut all of these out, allowing the operator to only open the doors on the machine once every eight parts!
The combination of the Lyndex Nikken Rotary Table and the Stallion 9/20 Quick Change Trunnion Table allowed us full 360 degree rotation of the aluminum blanks. Without this, we would not have been able to reach all 5 sides of the part. Customized for the CNC 302, the Trunnion Table 4th Axis fixture bolts directly to the faceplate of the rotary table. The entire assembly is also mounted on a baseplate, which allowed for an easy installation.
There are huge benefits to using modular workholding such as these PAWS Wedge Clamps. Should we have used a regular vise, we would have been limited to a maximum of two parts per cycle. While this is still better than the previous method of doing one part and one angle at a time, why machine two parts when you can machine eight? The small and low profile nature of the wedge clamps allowed us to truly utilize the entire 20" working surface of the Trunnion Table.
The Jergens Ball Lock Mounting System added an incredible amount of efficiency to this setup. While the wedge clamps do a fantastic job of increasing part density, the ball lock system allows the operator to load a second sub plate offline while the first is being machined. This cuts the time in between cycles to less than a minute. The thumb screws included with the Jergens product make swapping out the plates incredibly efficient and simple.
Overall, the partnerships that Martin Trunnion Tables holds with these forward-thinking companies allowed us to greatly increase the throughput for the end user.
Trunnion tables aren't limited to standard pneumatic clamping. These versatile and efficient machines can also be outfitted with automatic, hydraulic clamping systems to minimize loading error and greatly increase efficiency and spindle time. Over the years, we have made several hydraulic fixtures featuring Vektek Swing Clamps:
You may have seen the video via our instagram account of the Stallion 9/23 featuring the swing clamps in the image above. This trunnion was made for Mako Finished Products. In this case, six single acting clamps are fed with a manifold block that is hooked to an air over oil intensifier. By using a Trunnion Table fixture, the customer was able to machine all three sides of this part in a single setup, greatly increasing the efficiency of their machine, while simultaneously reducing the likelihood of scrap. In order to achieve full 360 degree rotation, we outfitted the HRT-210 with a riser block and created a larger outboard support. This, of course, created concern for tool clearance, but we were able to make it work in this customer's HAAS VF-2. Watch the video:
Similar to the above setup, the following Stallion 9/35 Trunnion Table is also a custom hydraulic fixture in which VekTek Swing Clamps were used.
In this case, the Stallion Trunnion also has a TS 1200 Hydraulic braking system on the outboard support. This created the need for a second air over hydraulic pump to allow both the brake and the vektek clamps to work simultaneously. Unlike the previous design, this part did not warrant a riser block, as 360 degree rotation could be achieved with the standard 6 inch center height of the HRT-210. Watch it in action:
If you are interested in setups similar to these, visit our Custom Fixturing Page. Watch the video here:
This week's highlighted Stallion fixture is a 9/23 Quick Change. The product was made for Timken, a company out of British Columbia, Canada. Using Jergens inc. Ball locks, the quick change option allows our customers to change setups quickly (within 60 seconds) and repeatably. The ball lock receiver bushings are mounted into 4 corners of the surface of the Stallion Trunnion Table. A 1" steel sub-plate, with hardened locater bushings in two of these corners, will act as the working surface. The sub-plate also includes a 2 inch grid pattern; this feature provides our customers with flexibility, as they are now able to mount virtually any vise or other workholding product onto their Stallion Trunnion Table. The trunnion is made from a one piece casting and is guaranteed flat and square within .001" over the entire surface.