Xometry Pro

Home

Forum Replies Created

Viewing 7 posts - 1 through 7 (of 7 total)

Vladimir Poskrebyshev

09.01.2025 at 19:44

Admin

Pulido Christophe
You can find the article Nikolaus is referencing here (listing it in different languages, maybe it will be useful for other users as well):
0
in reply to: Joint Design
Link copied
Vladimir Poskrebyshev

05.11.2024 at 21:18

Admin

Hi,

In addition to the colors visible in the Niko’s screenshot our spray painting options actually include a much broader selection. By clicking on the “RAL Classic” button, you’ll be able to explore a full palette of over 200 colors.
.

0

in reply to: SLS Nylon 12 Paint Color Options
Link copied
Vladimir Poskrebyshev

02.11.2023 at 15:30

Admin
Designing for CNC machining requires careful consideration to optimize the process for efficiency and high-quality results. Here are some critical design tips:
- Material Selection: Choose the right material for your application, considering factors such as strength, durability, and machinability. Common materials for CNC machining include aluminum, steel, brass, and various plastics.
- Tolerances and Clearances: Specify clear tolerances for dimensions and clearances for fit and assembly. Tighter tolerances can be more precise but may increase costs, while looser tolerances can be more cost-effective for less critical features.
- CNC Tool Selection: Work closely with your CNC machinist to select the appropriate cutting tools and toolpath strategies. The right tool and cutting parameters can significantly impact the surface finish and production speed.
- Avoid Overly Complex Geometries: Keep your design as simple as possible. Complex geometries with many sharp corners or intricate features can increase machining time and costs. Simplify where feasible.
- Internal Fillets and Radii: Use internal fillets and radii for sharp corners. This not only improves part strength but also makes machining smoother and less prone to tool breakage.
- Tool Access: Ensure that the tool can reach all areas of your part without interference. This may require modifying the design to avoid deep pockets or narrow channels that the tool can’t access.
- Machinability: Consider the machinability of the material. Some materials are more challenging to machine than others, which can affect tool wear and machining time.
- Avoid Undercuts: Minimize or eliminate undercuts in your design, as they may require additional setups and increase complexity.
- Part Orientation: Think about how the part will be fixtured and oriented during machining. Design features should allow for efficient clamping and minimal deflection during cutting.
- Draft Angles: If your design includes molded or cast features, incorporate draft angles to facilitate easy removal from the mold or die.
- Surface Finish: Specify the desired surface finish on critical surfaces. This can help the machinist select appropriate tooling and machining parameters.
- Avoid Thin Walls: Thin walls can be fragile and prone to distortion during machining. Ensure that wall thicknesses are adequate for the material and part function.
- Counterbore and Counterbore Depths: Use counterbores to create recesses for fasteners. Ensure proper depths for screws, bolts, or other fastening components.
- Deburring and Edge Breaks: Design parts with edges that are easy to deburr, as sharp edges can be a safety concern and increase labor requirements.
- Communication with Machinist: Maintain open communication with your CNC machinist. They can provide valuable insights into optimizing your design for efficient machining.
- Prototyping and Testing: Before proceeding with a large production run, create prototypes to test your design. This can help identify potential issues and improve the final product.
By following these design tips, you can help ensure that your CNC machining project is cost-effective, efficient, and results in high-quality parts that meet your specifications and requirements. Collaborating with experienced machinists and manufacturers is also key to achieving the best results in CNC machining projects.
in reply to: Designing for CNC Machining: Any Critical Tips?
Vladimir Poskrebyshev

02.11.2023 at 15:11

Admin

Selecting the right CNC machine for precision machining applications is crucial to ensure accuracy and quality in your manufacturing processes. Here are the key factors to consider when choosing a CNC machine, along with some insights and experiences:

Machine Type:

Determine the type of CNC machine required for your specific application, such as CNC milling, CNC turning, or CNC grinding. Each type is optimized for particular tasks.

Machine Size and Work Envelope:

Consider the size of the workpieces you need to machine. Ensure that the CNC machine has a large enough work envelope to accommodate your parts.

Accuracy and Precision:

Look at the machine’s specifications for positioning accuracy, repeatability, and resolution. These factors are critical for precision machining. High-quality linear guides and ball screws are essential for accuracy.

Spindle Speed and Power:

The spindle speed and power should match the materials you intend to machine. Higher spindle speeds are often required for fine finishes and small tools.

Tool Changer and Tool Holding:

The tool changer capacity and tool holding mechanism should suit your job requirements. Automatic tool changers enhance efficiency for complex jobs.

Control System:

The control system (e.g., Fanuc, Siemens, or Heidenhain) should be user-friendly and provide the necessary capabilities for your specific machining tasks.

Feed Rate and Rapid Traverse:

The feed rate and rapid traverse speeds should be adjustable to optimize machining time and surface finish. Look for machines with fast rapid traverse rates.

Materials Compatibility:

Ensure the CNC machine is compatible with the materials you intend to machine, including metals, plastics, composites, and exotic materials.

Coolant System:

A well-designed coolant system is essential to control heat and chip removal, especially in precision machining, where thermal stability is crucial.

Workholding Options:

Evaluate the availability of workholding options like vices, chucks, and fixtures that are suitable for your specific parts.

Ease of Maintenance:

Consider the ease of maintenance, accessibility of critical components, and availability of spare parts. A reliable and easily maintainable machine is essential for minimizing downtime.

Software and Programming:

Ensure that the CNC machine is compatible with your preferred CAD/CAM software. User-friendly software and programming capabilities are essential for precision machining.

Cost and Budget:

Determine your budget and compare it with the cost of the CNC machine. Consider not only the initial purchase price but also operating costs and the potential return on investment.

Supplier and Support:

Choose a reputable supplier with a track record of excellent customer support, including training, technical assistance, and spare parts availability.

Environmental Considerations:

Be aware of the environmental impact and energy efficiency of the machine, especially if sustainability is a concern.

Experiences and insights from others in your industry or network can be valuable when selecting a CNC machine. Consulting with engineers, machinists, and experts who have hands-on experience with specific machines and applications can provide valuable guidance.

Ultimately, the right CNC machine for precision machining will depend on the unique requirements of your projects, so thorough research and a careful assessment of your needs are essential to make an informed decision.

1

in reply to: Choosing CNC machine
Link copied

1
Vladimir Poskrebyshev

02.11.2023 at 15:07

Admin
Printing large-scale parts (over 50 cm) using 3D printing can be a challenging task, but there are several technologies and methods that are well-suited for this purpose. Here are some of the best technologies for 3D printing large-scale prototypes:

Fused Filament Fabrication (FFF) / Fused Deposition Modeling (FDM):

FFF or FDM 3D printers are widely available and can be used to create large parts by layering thermoplastic filaments. Large-format FFF/FDM printers with build volumes exceeding 50 cm in at least one dimension are available for industrial use.

Stereolithography (SLA):

SLA is a resin-based 3D printing technology that uses a liquid photopolymer resin cured by UV light. While it’s more common for small to medium-sized parts, some industrial SLA printers have larger build volumes suitable for larger prototypes.

Selective Laser Sintering (SLS):

SLS uses a laser to sinter powdered materials (typically plastics or metals) layer by layer. Some industrial-grade SLS machines can produce large parts, including those exceeding 50 cm.

Binder Jetting:

Binder jetting is a powder-based 3D printing process where a liquid binder is selectively deposited to bind powder layers. Some industrial binder jetting machines are capable of producing large parts.

Large-Format 3D Printers:

Some companies specialize in building large-format 3D printers specifically designed for printing large parts. These machines often utilize FFF/FDM technology with modifications to accommodate larger print volumes.

When choosing a technology for 3D printing large-scale parts, consider factors such as material requirements, precision, speed, and cost. It’s essential to select a technology that aligns with the specific requirements of your project and budget.

Additionally, as 3D printing technology continues to advance, more options for large-scale printing are likely to become available, so it’s a good idea to stay updated with the latest developments in the field.
- This reply was modified 1 year, 5 months ago by Vladimir Poskrebyshev.
1
in reply to: 3D printing large scale prototypes
Link copied

1
Vladimir Poskrebyshev

02.11.2023 at 15:03

Admin
Kuşkusuz, sürdürülebilir tasarım ilkeleri, makine mühendisliği projelerinin çevresel etkisini en aza indirmede çok önemlidir. İşte sürdürülebilir tasarım uygulamaları ve projelerinizde size yardımcı olacak önerilen okumalar:
1. Yaşam Döngüsü Değerlendirmesi (LCA): Bir ürünün tüm yaşam döngüsü boyunca çevresel etkisini analiz etmek için kapsamlı bir LCA gerçekleştirin. Bu, hammadde çıkarımı, imalat, taşıma, kullanım ve kullanım ömrünün sonunda bertaraf etmeyi içerir. Önerilen okuma: “Yaşam Döngüsü Değerlendirmesi: İlkeler ve Uygulama” by Curran, M.A.
2. Malzeme Seçimi: Daha düşük çevresel ayak izine sahip malzemeleri seçin. Geri dönüştürülmüş veya sürdürülebilir kaynaklardan elde edilen malzemeleri tercih edin. Biyolojik olarak parçalanabilen ve toksik olmayan malzemeleri düşünün. Önerilen okuma: “Sürdürülebilir Siteler için Malzemeler” by Meg Calkins.
3. Sökme ve Geri Dönüşüm için Tasarım: Ürünlerin yaşam döngülerinin sonunda kolayca sökülebilir ve geri dönüştürülebilir olacak şekilde tasarlanması. Bu, atıkları azaltır ve kaynakları korur. Önerilen okuma: “Gerçek Dünya için Tasarım: İnsan Ekolojisi ve Sosyal Değişim” by Victor Papanek.
4. Enerji Verimliliği: Tasarımları enerji verimliliği için optimize edin, ister ürünün kendisinin işletilmesinde ister imalat sürecinde olsun. Enerji tasarrufu sağlayan teknolojileri ve malzemeleri keşfedin. Önerilen okuma: “Proses Endüstrilerinde Enerji Verimliliği” by Andrzej Rejman.
5. Emisyonları Azaltma: Makinalarda temiz ve verimli yanma için tasarım yaparak veya düşük karbonlu alternatif teknolojileri seçerek sera gazı emisyonlarını en aza indirin. Önerilen okuma: “Sürdürülebilir Mühendislik: Kavramlar, Tasarım ve Vaka Çalışmaları” by David T. Allen.
6. Dayanıklılık için Tasarım: Daha uzun ömürlü ürünler oluşturun ve daha az değişim gerektiren, bu da genel kaynak tüketimini azaltır. Önerilen okuma: “Bebekten Beşiğe: Yaptığımız Şeylerin Yolunu Yeniden Yapma” by William McDonough and Michael Braungart.
7. Modülerlik: Ürünleri, tüm ürünün yerine sadece parçaların değiştirilmesine veya yükseltilmesine izin verecek şekilde tasarlayın. Bu, ürünün ömrünü uzatır ve atıkları azaltır. Önerilen okuma: “X için Tasarım: Eş Zamanlı Mühendislik İlkeleri” by David M. Hoeltzel.
8. Su Kullanımını Azaltın: Tasarımlarınıza su tasarrufu sağlayan özellikler veya teknolojiler ekleyin, özellikle su tüketimi ile ilgili uygulamalar için. Önerilen okuma: “Doğu Afrika’da Su-Smart Tarım” by P. G. McCornick.
9. Taşıma Verimliliği: Malzemelerin ve ürünlerin taşınmasını tasarımınızda göz önünde bulundurun. Mesafeyi azaltmak ve lojistiği optimize etmek, karbon emisyonlarını önemli ölçüde azaltabilir. Önerilen okuma: “Sürdürülebilir Taşımacılık: Sorunlar ve Çözümler” by William R. Black.
10. Yeşil Sertifikalar: LEED, ISO 14001 veya Energy Star gibi yeşil sertifikaları ve standartları öğrenin ve ürünlerinizi bu standartları karşılayacak veya aşacak şekilde tasarlayın.
Sürdürülebilir tasarımın sürekli bir süreç olduğunu ve genellikle trade-offları içerdiğini unutmayın. Çevresel hedefleri maliyet ve performans gibi diğer faktörlerle dengelenmesi gerekmektedir. Ayrıca, başarılı sürdürülebilir tasarım için en son sürdürülebilirlik trendleri ve teknolojileri ile güncel kalmak çok önemlidir.

0
in reply to: Sürdürülebilir endüstri tasarım uygulamaları
Link copied
Vladimir Poskrebyshev

02.11.2023 at 15:03

Admin
Certainly, sustainable design principles are crucial in minimizing the environmental impact of mechanical engineering projects. Here are some sustainable design practices and recommended readings to help you in your projects:
1. Life Cycle Assessment (LCA): Perform a thorough LCA to analyze the environmental impact of a product throughout its entire life cycle. This includes the extraction of raw materials, manufacturing, transportation, use, and end-of-life disposal. Recommended reading: “Life Cycle Assessment: Principles and Practice” by Curran, M.A.
2. Material Selection: Choose materials with a lower environmental footprint. Opt for recycled or sustainably sourced materials. Consider biodegradable and non-toxic materials. Recommended reading: “Materials for Sustainable Sites” by Meg Calkins.
3. Design for Disassembly and Recycling: Design products that are easy to disassemble and recycle at the end of their life. This reduces waste and conserves resources. Recommended reading: “Design for the Real World: Human Ecology and Social Change” by Victor Papanek.
4. Energy Efficiency: Optimize designs for energy efficiency, whether it’s in the operation of the product itself or in the manufacturing process. Explore energy-saving technologies and materials. Recommended reading: “Energy Efficiency in the Process Industries” by Andrzej Rejman.
5. Reducing Emissions: Minimize greenhouse gas emissions by designing for clean and efficient combustion in machines or by selecting low-carbon alternative technologies. Recommended reading: “Sustainable Engineering: Concepts, Design and Case Studies” by David T. Allen.
6. Design for Durability: Create products that have a longer lifespan and require fewer replacements, reducing overall resource consumption. Recommended reading: “Cradle to Cradle: Remaking the Way We Make Things” by William McDonough and Michael Braungart.
7. Modularity: Design products in a way that allows for easy upgrades and component replacement rather than replacing the entire product. This extends the life of the product and reduces waste. Recommended reading: “Design for X: Concurrent engineering imperatives” by David M. Hoeltzel.
8. Minimize Water Usage: Incorporate water-saving features or technologies in your designs, particularly for applications involving water consumption. Recommended reading: “Water-Smart Agriculture in East Africa” by P. G. McCornick.
9. Transportation Efficiency: Consider the transportation of materials and products in your design. Reducing the distance and optimizing logistics can significantly cut carbon emissions. Recommended reading: “Sustainable Transportation: Problems and Solutions” by William R. Black.
10. Green Certifications: Familiarize yourself with green certifications and standards like LEED, ISO 14001, or Energy Star, and design your products to meet or exceed these standards.
Remember that sustainable design is an ongoing process and often involves trade-offs. You’ll need to balance environmental goals with other factors like cost and performance. Additionally, staying updated with the latest sustainability trends and technologies is crucial for successful sustainable design.

0
in reply to: Sustainable industry design practices
Link copied