3D printing has revolutionized various aspects of production and prototyping across numerous industries. One area where this technology is making significant inroads is in the creation of workholding fixtures. These fixtures, essential for securing parts during manufacturing processes, can benefit immensely from the unique capabilities of 3D printing.
While some manufacturers remain hesitant, fearing that 3D printed parts lack durability, the reality is that 3D printing offers a multitude of advantages for workholding that traditional subtractive manufacturing simply cannot match. While these concerns may have been valid in decades past, 3D printing is not just for prototypes anymore.
Let’s explore the applications and benefits of 3D printed workholding fixtures, showcasing why this technology is not just a viable alternative, but a superior choice in many cases.
Applications of 3D Printed Fixtures
Robotics and End Effectors
One of the most promising applications of 3D printed fixtures is in robotics. Robots, particularly those used in manufacturing, often require custom end effectors that can handle specific tasks with precision. 3D printing excels in producing these complex geometries and bespoke designs.
Subtractive Manufacturing
In traditional subtractive manufacturing, workholding fixtures are indispensable. These fixtures must secure parts firmly in place as they undergo machining. 3D printed fixtures can be customized to match the exact geometry of the part they are holding, ensuring a more secure and precise fit than standard machined fixtures. This precision is particularly beneficial for complex or irregularly shaped parts that would be difficult or costly to produce using traditional methods.
Coordinate Measuring Machine (CMM) Fixtures
Accuracy is paramount when it comes to measuring parts for quality control. 3D printed fixtures can be designed to hold parts at specific angles or positions, ensuring that measurements are accurate and repeatable. This level of customization and precision is difficult to achieve with off-the-shelf fixtures.
Check Gauges
For final inspection in subtractive manufacturing, check gauges ensure that parts meet specified parameters for fit and tolerance. 3D printed gauges can incorporate design features that allow for easy and quick inspection – for example, you can 3D print instructions directly into the gauge, streamlining the quality control process.
The Benefits of 3D Printing for Workholding
Strength and Durability
Contrary to some misconceptions, 3D printed fixtures can be incredibly strong and durable. Modern 3D printing materials, such as HP Nylon 12 GB (glass bead), and advanced composite materials like Markforged Onyx reinforced with carbon fiber or Kevlar strands, produce parts that rival the strength of aluminum. These materials are not only robust but also lightweight, which can be a significant advantage in many applications.
Design Freedom and Customization
One of the standout benefits of 3D printing is the unparalleled design freedom it offers. Traditional subtractive manufacturing methods are often limited by the constraints of the machining process, but 3D printing can produce complex geometries that would be impossible or prohibitively expensive to machine. For instance, fixtures that require integrated air lines for suction can be designed with these features built-in, eliminating the need for external tubing and simplifying the overall design.
Reduced Lead Times
The speed at which 3D printed fixtures can be produced is another critical advantage. With additive manufacturing, the lead time from design to finished part is significantly shorter compared to traditional methods. This rapid turnaround is particularly beneficial for low-volume, high-complexity orders, which are common in custom workholding applications.
Non-Marring Fixtures
3D printing also allows for the production of non-marring fixtures, which are essential when working with delicate or finished surfaces, or parts for sensitive applications like those in the medical industry. Plastic parts printed on machines like the Markforged printer, using materials such as Onyx with carbon fiber strands, provide the necessary strength while being gentle on the parts they hold.
Lightweight Structures
3D printing can produce fixtures with lattice structures that can be made lighter without sacrificing strength. This is particularly advantageous in robotics, where reducing the weight of end effectors can significantly reduce the wear and tear on servo motors, and enhance the efficiency and longevity of the equipment.
Your Trusted Source for Industrial 3D Printing
3D printing offers a transformative approach to creating workholding fixtures in manufacturing. Its ability to produce strong, durable, and highly customized parts makes it an excellent choice for applications ranging from robotics to quality control.
At 3D Parts Unlimited, we are experts in the industrial applications of 3D printing. Whether you’re looking for a small quantity of fixtures that fit your parts like a glove, or a large quantity of production-ready 3D printed parts, we offer a wide range additive manufacturing services including MJF, CLIP, FDM, SLS, and more. Request a quote today to learn more about what 3D Parts Unlimited can do for you.