A robotics company should be able to build a remarkable robot without becoming a motor company, a controls company, and a gearbox company along the way.
That ought to be an ordinary expectation.
Instead, consider what happens when the parts you need were designed around different assumptions. A different controller changes the packaging. A different reduction changes the mounting. A supplier change sends you back through engineering work you thought was finished. The component price tells you very little about what it will cost to use the component.
Someone pays for all of that. Usually the team trying to build the robot.
We should stop treating the ability to do everything as the admission price for making anything.
If we want American actuators to serve the next several decades of robotics, we should take that work seriously. Every hour spent reconciling avoidable differences is an hour unavailable for making something better.
We can make different choices about where those differences belong.
The Actuator Platform Interface, or API, proposes clear agreements about how actuator components meet, so independent companies can build on each other's work while retaining ownership of their products. The motor, its control electronics, its reduction, and the surrounding machine each deserve an understandable boundary.
A motor could be a useful foundation for several companies' ideas. One company might make the motor. Another might develop the controller. Another might specialize in reduction. The robot builder could combine their work around an application none of those suppliers would have built alone.
There is a business in making a better part. There is also a business in making other people's products easier to build.
That is an industry worth building.
Specialization is serious industrial work. A company that makes an excellent component, supplies it reliably, and improves it for years is doing consequential work. It should have a path to a substantial business without having to manufacture everything attached to its product.
The customer should have room to specialize, too. Buying a motor should leave room to make decisions about control. Choosing a reduction should leave room to reconsider the motor. Good boundaries preserve those choices as a product matures.
Of course, hardware makes this difficult. Parts that bolt together can still be a poor match. Loads, heat, tolerances, service access, and changing requirements all matter. A useful interface has to make those responsibilities understandable. Compatibility should be something engineers can evaluate and establish with evidence.
There is plenty of engineering in that ambition. It deserves the same attention as the component itself.
We also need to think about who gets to participate. A small controls company should be able to contribute without financing an entire actuator business. A motor manufacturer should be able to reach more applications without owning the customer's software. A robot company should be able to change direction without discarding every supplier relationship it has built.
Those possibilities would give American manufacturing more places to grow.
Domestic capacity accumulates through repeat orders, experienced people, dependable suppliers, and products that remain useful long enough to improve. We should design business relationships that help that accumulation. An interface can be one of those relationships, expressed in engineering terms.
It can create room for competition on performance, quality, service, and judgment. Companies could compete vigorously while agreeing on enough to let their customers benefit from one another's work.
How much should be shared to make that possible?
Should the interface specifications be open source? Should the underlying designs be? Should those two questions have different answers?
Those decisions are still ahead of us. Publishing a specification, licensing a design, and deciding who can change an interface carry different responsibilities. They deserve deliberate choices. We want the discussion to include the people who will build, maintain, and depend on these products.
For now, the work is to develop the idea, test its assumptions, and invite useful disagreement. The Actuator Platform Interface is taking shape. Its value will depend on whether it makes real collaboration easier.
The ambition is straightforward: more American companies doing work they are good at, building products other companies can confidently build upon.
Over the coming decades, we will need the judgment and effort of many companies. We should make it easier for that effort to add up.
Build a great part. Make room for the next great company.