Nov
ENERGY EFFICIENCY AT UNISIG
- 2025
- Ampersand Milwaukee

Energy efficiency is one area where everyone can agree. It is beneficial for the planet and for profits. A small gundrilling machine may have less than 20 horsepower, while a large BTA drilling machine can exceed 200 horsepower. Regardless of size, every kilowatt-hour of electricity matters. UNISIG designs machines with efficiency in mind because we believe that is how well-planned, modern machines should be built—through thoughtful engineering and design choices that reduce energy consumption and improve performance.
DESIGNING FOR MECHANICAL EFFICIENCY
DESIGNING FOR MECHANICAL EFFICIENCY
"Mechanically efficient designs run cooler, hold tighter tolerances, and last longer."

SMART SYSTEMS THAT CONSERVE ENERGY
COMMITMENT BUILT INTO EVERY MACHINE
SMART SYSTEMS THAT CONSERVE ENERGY

COMMITMENT BUILT INTO EVERY MACHINE
FREQUENTLY ASKED QUESTIONS
Because efficiency impacts both performance and sustainability. Well-designed, efficient machines reduce waste, lower operating costs, and improve reliability.
They recover kinetic energy and, in many cases, return high-quality power to the grid.
Yes, positively. Efficient designs reduce heat, maintain precision, and extend component life, leading to improved accuracy and uptime.
Nov
WHEN IS TREPANNING THE RIGHT CHOICE?
- 2025
- Ampersand Milwaukee

Trepanning is a process that creates a hole in a workpiece by machining only the outer area of the hole, leaving an unmachined core in the center. In contrast, a BTA drill creates the same hole by turning all of the material into chips, leaving no core behind. This provides manufacturers with two distinct ways to create a hole from solid material.
BTA drilling is simple in concept: set up the machine, drill the hole, remove the workpiece, and empty the chip hopper when it’s full. Many manufacturers choose this process for its straightforward operation and the convenience of chip recycling. Trepanning isn’t necessarily more difficult, but it requires more operator involvement. When the hole is complete, the retained core must be removed from the tool between cycles.
Trepanning and BTA solid drilling share the same coolant delivery and chip evacuation systems. Coolant is introduced around the outside of the tool, and chips are exhausted through the drill tube. In BTA drilling, coolant passes freely through the tube, carrying chips to the conveyor. In trepanning, however, chips taken by the coolant must pass by the workpiece core inside the tube. The bore quality between the two methods can be similar, but it depends on the tool design. Trepanning tools with a sufficient cutting width to engage guide pads can achieve diameter tolerances similar to solid drilling. Tools designed for the narrowest width of cut (leaving the largest core) generally produce lower bore quality. For very deep holes, a counter-rotating tool and workpiece are often used. Because the trepanning core rotates with the workpiece, it can create challenges related to vibration or unexpected loading. Once these differences are understood, the key question becomes: When is trepanning the right choice?
ADVANTAGES OF TREPANNING

ADVANTAGES OF TREPANNING

“Trepanning is not just an alternative to BTA drilling—it’s a strategic choice when core recovery, power efficiency, or tooling economy align with production goals.”

LIMITATIONS AND CONSIDERATIONS
EQUIPMENT FOR TREPANNING
LIMITATIONS AND CONSIDERATIONS

EQUIPMENT FOR TREPANNING
FREQUENTLY ASKED QUESTIONS
Trepanning is ideal when core recovery or reduced tooling cost is valuable, or when material properties must be preserved for testing or reuse.
It’s possible, but challenging. Specialized core-breaking or cropping tools are required to separate the core, which adds time and complexity.
Machines must be powerful, and designed for core handling. UNISIG B-Series machines can perform both trepanning and BTA drilling, offering flexibility for different applications.
Nov
PAINT BOOTH INVESTMENT: PRECISION PAINTING FOR UNISIG MACHINES
- 2025
- Ampersand Milwaukee

UNISIG machines are designed to run for 20 years or more in production. While operating, the machines are exposed to factory conditions that are not ideal for precision machinery. Cutting fluid—whether straight oil or water-soluble—contains extreme pressure (EP) additives that improve tool performance but can degrade or damage seals and paint on the machines over time. We want our machines to look good while they age. Part of our strategy for this is to use a two-component polyurethane enamel to paint our base castings, structural frames, machine enclosures, or any fabricated metal parts in our machines. Recently, we targeted our painting department for investment to keep up with our growing company and expanding product line. Our goals for investment were clear:
- Improve the shop environment in the painting area
- Improve the quality of the finished product
- Increase the dimension of parts we could paint
- Reduce the amount of paint used and wasted
- Increase the productivity in painting
- Increase the throughput in the paint department
Manufacturing engineers researched the technology available, and as in most cases in manufacturing, we were even more excited about the project after learning what was possible.
DIMENSIONS AND INTERIOR
“It’s an investment in long-term quality, efficiency, and the appearance of every UNISIG machine that leaves our facility.”
DIMENSIONS AND INTERIOR
“It’s an investment in long-term quality, efficiency, and the appearance of every UNISIG machine that leaves our facility.”

AIR HANDLING AND PAINT MIXING
TRAINING, MAINTENANCE, AND CONTINUOUS IMPROVEMENT
AIR HANDLING AND PAINT MIXING

TRAINING, MAINTENANCE, AND CONTINUOUS IMPROVEMENT
FREQUENTLY ASKED QUESTIONS
UNISIG machines are built to perform for decades in production environments, often exposed to cutting fluids and other challenging factory conditions. The investment into advanced paint technology helps protect critical components, maintain a professional appearance, and ensure long-term durability.
The upgraded booth allows UNISIG to paint larger machine components with greater precision and efficiency. It features improved lighting, controlled air handling, and a crane access system for handling large parts—resulting in higher quality finishes and increased throughput.
The automatic mixing system precisely controls the two components of the polyurethane enamel at the spray gun. This ensures a perfect mix every time, reduces paint waste, and gives painters better control over color selection and solvent use—all contributing to consistent, high-quality finishes.
Nov
MANUFACTURING INNOVATION DRIVES ENGINEERING INNOVATION
- 2025
- Ampersand Milwaukee

Every company that builds advanced technology products is chasing engineering innovation, looking for clever and practical designs that separate them from the competition. Precision machine tools and automation have evolved to incredible levels because of constant competitive pressure, but that same pressure can leave design engineers searching for fresh inspiration.
Where does true design innovation come from? While inspiration can occasionally strike out of nowhere, relying on those rare moments is not a sustainable strategy when your profession demands a consistent output of high-quality designs. One of the most reliable and enduring sources of engineering innovation comes from a strong, ongoing connection to manufacturing.
INNOVATION MEETS REALITY
INNOVATION MEETS REALITY
“We have an endless source of engineering innovation that comes directly from innovations in manufacturing.”
MANUFACTURING EXPANDS POSSIBILITIES
KEEPING ENGINEERING AND MANUFACTURING TOGETHER
MANUFACTURING EXPANDS POSSIBILITIES
KEEPING ENGINEERING AND MANUFACTURING TOGETHER
FREQUENTLY ASKED QUESTIONS
Manufacturing advancements expand what is physically possible to build. When engineers stay connected to the shop floor, they gain real-world insights about materials, processes, and tolerances that influence smarter, more efficient designs.
Close collaboration ensures that designs are practical, efficient to produce, and optimized for quality and performance. When both teams operate in the same facility, feedback flows naturally, leading to faster innovation and fewer design challenges.
UNISIG builds its critical components in-house, investing in advanced machinery, technology, and training. By keeping manufacturing and engineering under one roof, the company maintains full control over production and continuously drives innovation in both areas.
Nov
WHAT DOES IT MEAN TO BUILD AUTOMATION?
- 2025
- Ampersand Milwaukee

Automation is part of our DNA at UNISIG. Many of our deep hole drilling machine projects include some level of automation, and we think about it at every step of development. This approach allows us to offer customers automation options with their initial purchase or as a future upgrade, ensuring their investment is compatible with automated production.
UNISIG machines are servo-driven and equipped with programmable feed rates, positions, and spindle speeds that optimize production. Many models also include servo-driven workpiece positioning systems that automatically prepare the machine for the next part. The user interface clearly shows the machine’s position and cycle status, making it simple for operators to complete one cycle and start the next.
Before automating a machine, the drilling operation itself must be stable and controlled. UNISIG’s process monitoring system tracks drilling conditions in real time and can automatically adjust parameters to maintain cycle performance. When limits are reached, the machine interrupts operation to protect the tool and workpiece while communicating what fault caused the stoppage. This feedback helps operators fine-tune parameters for successful drilling and establish tool life settings for high-volume production.
INTEGRATED AUTOMATION: BUILT FOR EFFICIENCY
“Automation is never an afterthought. It is built in from the very beginning.”
INTEGRATED AUTOMATION: BUILT FOR EFFICIENCY
“Automation is never an afterthought. It is built in from the very beginning.”
READY-ENGINEERED SYSTEMS: PROVEN AND SCALABLE
ADVANCED EXPERTISE: SIMPLE UPGRADES TO COMPLEX CELLS
READY-ENGINEERED SYSTEMS: PROVEN AND SCALABLE
ADVANCED EXPERTISE: SIMPLE UPGRADES TO COMPLEX CELLS
FREQUENTLY ASKED QUESTIONS
UNISIG offers a range of automation options, including in-machine conveyors, pallet systems, bulk feeders, robot integration, and multi-machine automation cells managed by the UNISIG Automation Cell Controller (ACC).
No. UNISIG provides ready-engineered and proven automation solutions. Our team guides customers through setup and operation to ensure a smooth transition into automated production.
Yes. Many UNISIG machines are designed to be automation-ready from the start, allowing customers to add automation systems as production needs grow.