What are the applications of metal 3D printing in logistics automation equipment?

一, Combining moulding of complicated shapes: going beyond the physical boundaries of traditional manufacturing
1. Lightweight design that mimics nature
One of the biggest design problems with logistics automation equipment is finding the right balance between weight and strength. Topology optimisation method can make biomimetic honeycomb structures in metal 3D printing parts like AGV chassis and stacker forks. For instance, a company produced a 3D printed titanium alloy fork for an intelligent warehousing system that uses a hexagonal honeycomb unit array. This fork can hold 120 kg while being 40% lighter and consuming 18% less energy than standard forgings. SLM (Selective Laser Melting) technology directly builds this structure, which avoids problems with stress concentration that can happen with standard welding methods and makes it three times more resistant to fatigue.
2. Putting conformal cooling tubes together
Motor overheating is the main thing that slows down high-speed sorting machines. Metal 3D printing can directly build spiral cooling channels inside the motor case, allowing for accurate heat exchange between the cooling liquid and the heat source. A company that makes logistics equipment uses the DMLS (Direct Metal Laser Sintering) process to make a sorting machine drive motor housing. This housing cools the motor 60% better than traditional water jackets, which boosts the motor's continuous power from 15kW to 22kW and lets it sort more than 2000 pieces per minute.
3. Multi-material gradient composite 3D printing may change the composition of materials in a gradient way to meet the performance needs of different parts of logistical equipment. A particular team produced a steel-aluminum composite conveyor drum that employs online powder mixing technology to make the core out of high-strength steel and the outside layer out of aluminium alloy that resists wear. While retaining total rigidity, it reduces weight by 35% and noise by 12 decibels. EBM (electron beam melting) technology makes this gradient material structure possible. It also fixes the problem of weak interface bonding in traditional bimetallic casting.
二, Customised production: quick response to both standard and personalised needs
1. Making automation equipment that isn't typical
Customers often ask for specific sizes and functions in logistics automation projects. Metal 3D printing technology can swiftly turn design files into real parts, which speeds up the development process by a lot. A company built a unique, irregular sorting chute for an e-commerce warehouse out of 3D-printed nickel-based alloy. This shortened the typical production process from 15 steps to 3 days. With parameterized design, the chute angle may be set with an accuracy of 0.1 °, and the sorting accuracy goes up to 99.97%.
2. Making medical logistics equipment that is specific to the job
In the area of cold chain logistics, 3D printing can make unique containers that meet GMP criteria. A drug business has started using 3D-printed titanium alloy trays to transport vaccines. By making the internal partition structure better, the single transit volume has grown by 25%, while the temperature has stayed the same at -70 °C. The gadget is made with SLM technique and has a surface roughness of Ra ≤ 0.8 μ m, which meets medical grade cleanliness standards.
3. Quickly changing modular devices
Metal 3D printing makes modular design possible, which means that logistics equipment may swiftly alter to meet the needs of the business. A certain intelligent warehousing system provider has used 3D printing technology to simplify the connection parts of shelf units from 23 standard parts to 3 3D printing modules. This has cut the time it takes to adjust the height of the shelves from 8 hours to 0.5 hours and increased the efficiency of system reconstruction by 96%.
三, Digitalizing the spare parts supply chain: a move from having too much inventory to making things on demand
1. Use of Digital Warehouse Mode
Immensa, a business from the Middle East, has cut the cost of replacement parts for the oil and gas industry by 70% by creating a supply chain for spare parts that uses "digital twin+3D printing." Some of its main tasks are:
3D scanning modelling: scanning important parts of equipment with high accuracy to make editable digital models; cloud storage management: putting models on a private cloud platform and sorting them by device type and failure mode; on-demand printing and delivery: Regional 3D printing factories can get spare parts to you in 48 hours or less.
This mode has been used to get vulnerable parts like gears and bearings for logistics automation systems, cutting the period the equipment is down from 72 hours to 12 hours.
2. Reverse engineering to fix things quickly
3D printing technology can fix broken pieces on old logistical equipment that is no longer in use. A select group of ports used metal 3D printing to fix the guide wheels on stacker cranes that were brought in in the 1990s. We got information on internal defects by doing CT scans, and we used Inconel 718 alloy powder for additive manufacturing. After being fixed, the part lasted 85% as long as a new one, and the cost of a single repair was 60% less than that of typical welding methods.
3. Help with predictive maintenance
3D printing can make extra components before they are needed by combining IoT sensor data. A certain smart logistics system puts strain sensors in the joints of AGV. When the wear level hits a certain point, the system immediately sends out the 3D printing spare parts production instruction. This approach extends the time between replacing important parts from an average of 180 days for passive maintenance to 360 days for proactive prevention. This cuts maintenance expenses by 42%.
四, Combining and improving technology: opening the door to a new age of automated logistics
1. A lot of work with AI
Siemens Industrial Software's AI design platform can automatically come up with ways to improve 3D printing for parts of logistical equipment. An AI system creates a lattice structure for the sorting machine turntable bearing seat by going through 100,000 iterations. This makes the seat 58% lighter and 35% faster to print while keeping its stiffness. The ISO 10791-1 machine tool testing standard has shown that this plan works.
2. Collaborative manufacturing using many technologies
Metal 3D printing and CNC machining are coming together to create a new type of production. A certain company makes the logistics robot joint parts by 3D printing complex internal structures and then using a five-axis linkage machining centre to finish the precision machining of key mating surfaces. This gives the parts an overall accuracy of ± 0.02mm, which is three times better than pure 3D printing technology.
3. Practices for making things that last
3D printing technology has less of an influence on the environment since it can recycle materials. This is important because environmental rules are getting stricter. A logistics equipment maker set up a metal powder recycling system that can recycle and reuse 98% of the nickel-based alloy powder in printing waste. This cuts carbon emissions from each part by 65% compared to typical casting methods.