A Comprehensive Guide to Choosing the Right CNC Tools for Your Machining Needs

by | Jul 13, 2023 | CNC Machine Tools, CNC Machining Guides

Guide to Choosing the Right CNC Tools for Your Machining Needs

Choosing the right CNC tools is crucial for achieving optimal results in machining processes. Whether you’re involved in precision engineering, manufacturing, or any industry that relies on CNC technology, selecting the appropriate tools can significantly impact efficiency, accuracy, and overall productivity.

We at MDA know that machine tools have gradually evolved with time. And believe that every client has different needs, and to fulfill them, we use CNC carbide tools that are ideal for your project.

In this comprehensive guide, we will delve into the key factors to consider when choosing CNC tools for your specific machining needs. From understanding different tool types and geometries to evaluating materials, coatings, and tool life, we’ll provide valuable insights to help you make informed decisions.

By the end of this guide, you’ll be equipped with the knowledge necessary to select the right CNC machine tools to maximize your machining outcomes and contribute to your industry’s success.

Understanding CNC Tools

CNC tools, short for Computer Numerical Control tools, are cutting tools that are specially designed to use in computer-controlled operations. These tools are ideal for shaping and removing the material with precision and accuracy. There are various types of CNC tools available, with each designed for specific machining operations. Some common types include milling tools, turning tools, drilling tools, and more. Understanding different types and their applications is important for selecting the right tool for your machining needs.

A typical CNC tool consists of several key components that work together to perform cutting operations effectively. These components include:

  • Shank
  • Cutting Edge 
  • Flutes 
  • Body

Tool materials and coatings play an important role in the performance and longevity of CNC tools.

Different materials, like high-speed steel, carbide, and ceramic, offer varying levels of heat resistance, durability, and hardness. The choice of tool material depends on factors such as workpiece material, cutting speed and desired tool life.

Understanding the role of tool materials and coatings is essential for selecting the most suitable combination for your specific machining needs, ensuring optimal performance, and maximizing the tool’s lifespan.

1. Assessing Machining Needs

A. Identifying Specific Machining Requirements

To choose the right CNC tools, it is necessary to identify your machining requirements. This involves understanding the nature of the workpieces you will be machining, the types of operations you will perform, and the desired outcomes. By defining your machining needs, you can narrow down the selection of tools that will be suitable for your applications.

B. Factors to consider: Material, Complexity, Tolerance Levels

When assessing your machining needs, several factors should be considered:

  • Material: Different materials have different properties, like hardness, toughness, and machinability. The type of material being machined greatly influences the selection of CNC machine tools. For example, harder materials require tools with specific coatings for improved cutting performance.
  • Complexity: The complexity of the workpiece and the machining operations will impact the tool selection. For example, milling operations require specific types of tools or tool geometries to achieve the desired results.
  • Tolerance Levels: The desired tolerance of the machined parts is another necessary consideration. Tighter tolerances might require the use of high-precision tools with minimal runout designed for achieving precise dimensions.

Considering these factors will help you align your machining needs with the capabilities and specifications of different CNC tools, allowing you to make informed decisions when selecting the appropriate tools for your applications.

C. Determining Desired Machining Speed and Accuracy

Machining speed and accuracy requirements vary depending on the specific application and production goals. Higher machining speeds can increase productivity while maintaining accuracy is essential for achieving precise dimensions and surface finishes.

When assessing your machining needs, it is important to determine the desired machining speed and accuracy level required for your project. This will influence the choice of tools in terms of their cutting parameters, such as feed rate and spindle speed, as well as the tool design and materials used. Balancing speed and accuracy is crucial to achieving efficient and precise machining results.

By assessing your machining needs based on material considerations, complexity, tolerance levels, and desired speed and accuracy, you can make informed decisions when selecting the right CNC tools that align with your specific requirements and optimize your machining processes.

2. Exploring Various CNC Tools

A. Milling Tools

Milling tools are used in CNC machining processes to remove material from the workpiece. They are versatile and perform various cutting operations. Some examples of milling tools include:

  • End Mills: End mills have cutting edges on the end and sides of the tool. They are widely used for contouring, slotting, and pocketing operations.
  • Face Mills: Face mills have a large cutting diameter and multiple cutting edges. They are ideal for facing flat surfaces and producing large flat areas.
  • Slotting Cutters: Slotting cutters are designed specifically for cutting slots in workpieces. They have straight or helical teeth and are available in various widths for different slot dimensions.

 

B. Turning Tools

Turning tools are used in CNC turning operations, where the workpiece rotates when the cutting tool remains stationary. They are used for cylindrical parts and shafts. Examples of turning tools include:

  • Inserts: Inserts are replaceable cutting edges that are clamped onto the tool holder. They come in different shapes and sizes and are suitable for various turning applications.
  • Boring Bars: Boring bars are used for enlarging existing holes or creating internal features in a workpiece. They provide a rigid tooling solution for precise hole machining.
  • Threading Tools: Threading tools are used for cutting threads on the surface of a workpiece. They can create both external and internal threads.

 

C. Drilling Tools

Drilling tools are used to create holes in the workpiece. They are essential in various machining operations. Some common drilling tools include:

  • Twist Drills: Twist drills are the most common type of drilling tool. They have two cutting edges and are suitable for drilling different materials.
  • Spot Drills: Spot drills are used to create a small indentation or spot to accurately guide the subsequent drilling operation. They help improve hole positioning and prevent drill wandering.
  • Center Drills: Center drills are used to create a conical recess at the starting point of a hole. They provide a precise centering point for subsequent drilling or turning operations.

3. Selecting the Right Tool Geometry

A. Understanding Tool Geometries: Rake Angle, Helix Angle, Clearance Angle

Tool geometries refer to specific angles and configurations of the cutting tool that directly impact its performance during the machining operations. Three key geometrical aspects to consider are:

  • Rake Angle: The rake angle is the angle between the tool’s cutting edge and a reference plane perpendicular to the workpiece surface. It affects chip formation and cutting forces. A positive rake angle facilitates efficient chip evacuation and reduces cutting forces, while a negative rake angle enhances tool strength and can be advantageous for tougher materials.
  • Helix Angle: The helix angle represents the angle formed by the cutting edge and a line parallel to the tool’s axis. It affects chip flow, tool rigidity, and surface finish. Higher helix angles promote better chip evacuation, reduced tool deflection, and improved surface quality.
  • Clearance Angle: The clearance angle is the angle between the tool’s flank and a line perpendicular to the workpiece surface. It helps prevent rubbing and facilitates chip removal. Proper clearance angles prevent tool wear, overheating, and chip re-cutting.

 

B. Matching Tool Geometry to Specific Machining Operations

Different machining operations require specific tool geometries to optimize cutting performance. For example:

  • Roughing Operations: Roughing typically requires tools with larger rake angles to enhance chip evacuation and reduce cutting forces, resulting in efficient material removal.
  • Finishing Operations: Finishing often benefits from smaller rake angles and higher helix angles to achieve improved surface finish and dimensional accuracy.
  • Hard Materials: Machining hard materials may require tools with lower rake angles and stronger tool geometries to withstand the higher cutting forces involved.

 

C. Optimizing Tool Geometry for Chip Evacuation, Surface Finish

Optimizing tool geometry plays a vital role in chip evacuation and surface finish:

  • Chip Evacuation: Proper tool geometries, such as positive rake angles and higher helix angles, facilitate efficient chip flow and evacuation. This prevents chip clogging, reduces cutting forces, and minimizes the risk of tool damage.
  • Surface Finish: Tool geometries with smaller rake angles and suitable clearance angles can enhance surface finish by reducing the tendency of built-up edge formation and improving chip control. Consequently, this results in smoother surfaces and reduced post-machining operations.

4. Considering Tool Materials and Coatings

A. Common tool materials: High-Speed Steel, Carbide, Ceramic

When selecting a CNC machining tool, the choice of tool material is crucial as it directly impacts performance and durability. Here are three common tool materials:

  • High-Speed Steel (HSS): High-speed steel is a versatile tool material that is known for its toughness and ability to withstand high temperatures. It is cost-effective and suitable for a wide range of machining applications.
  • Carbide: Carbide tools are made from a combination of tungsten carbide and binder metal. Carbide tools offer exceptional hardness and wear resistance, making them ideal for machining hard materials or high-speed applications. They are less likely to chip or break compared to HSS tools.
  • Ceramic: Ceramic tools are extremely hard and heat-resistant, therefore making them suitable for high-speed machining of heat-resistant materials like superalloys. They provide excellent surface finish and prolonged tool life in specific applications.

B. Advantages and Disadvantages of Each Material

Materials Advantages Disadvantages
High-Speed Steel (HSS) Cost-effective, toughness, versatility. Lower hardness compared to carbide and ceramic, limited to moderate cutting speeds.
Carbide High hardness, wear resistance, suitable for high-speed and heavy-duty applications, longer tool life. Higher cost compared to HSS, more brittle and susceptible to chipping in certain applications.
Ceramic Exceptional hardness, high-temperature resistance, excellent surface finish, and prolonged tool life in specific applications. Brittle and prone to fracture under high impact or bending loads, limited to certain machining applications.

 

Explore our extensive product gallery showcasing an impressive assortment of CNC parts crafted from a wide variety of materials.

C. Exploring Tool Coatings: TiN, TiCN, DLC Coatings

Tool coatings are applied to the surface of the cutting tool to enhance its performance and longevity. Here are three common coatings:

  • Titanium Nitride (TiN): TiN coatings provide increased hardness, heat resistance, and improved lubricity. They are suitable for a wide range of applications and materials.
  • Titanium Carbonitride (TiCN): TiCN coatings offer enhanced wear resistance and higher hardness compared to TiN coatings. They are well-suited for machining abrasive materials and can handle higher cutting speeds.
  • Diamond-Like Carbon (DLC): DLC coatings provide exceptional hardness, low friction, and excellent wear resistance. They are suitable for high-speed machining and offer extended tool life.

5. Evaluating Tool Life and Performance

A. Factors Influencing Tool Life: Cutting Speed, Feed Rate, Cutting Parameters

Several factors significantly influence tool life and performance during machining operations. These factors include:

  • Cutting Speed: The cutting speed refers to the velocity at which the cutting tool engages with the workpiece. However, higher cutting speeds can increase heat generation and wear on the tool, potentially reducing its life. Finding the right balance between cutting speed and tool life is crucial for optimal performance.
  • Feed Rate: The feed rate represents the rate at which the tool advances along the workpiece. A higher feed rate can increase the load on the tool, affecting tool life. Adjusting the feed rate appropriately based on the tool’s capabilities and the desired machining outcomes maximizes tool performance.
  • Cutting Parameters: Various cutting parameters, such as depth of cut and axial/radial depth ratios, influence tool life. Aggressive cutting parameters can lead to increased tool wear, while conservative parameters may affect productivity. Finding the right combination of cutting parameters is essential for achieving a balance between tool life and efficient machining.

B. Assessing Tool Wear, Signs of Deterioration

Regular assessment of tool wear and signs of deterioration is necessary to maintain machining quality and prevent unexpected tool failure. Common signs of tool wear and deterioration include:

  • Flank Wear: Flank wear refers to the gradual wear of the tool’s flank surfaces due to repeated contact with the workpiece. It can be observed as a loss of cutting edge sharpness and an increase in cutting forces.
  • Chipping or Fracture: Chipping or fracture of the cutting edge can occur due to excessive cutting forces, impact, or tool material brittleness. These signs indicate that the tool has reached its limits and needs replacement.
  • Surface Finish Degradation: If the surface finish of the machined part becomes rough or exhibits inconsistencies, then it may indicate tool wear or deterioration. Monitoring surface finish can provide insights into tool performance.

C. Monitoring Tool Performance for Optimal Productivity

To ensure optimal productivity, it is crucial to monitor tool performance throughout the machining process. This can be achieved by:

  • Regular Inspection: Regularly inspecting the tool for signs of wear, damage, or deterioration helps identify potential issues early on and allows for timely tool replacement or maintenance.
  • Machining Data Analysis: Analyzing machining data, such as cutting forces, power consumption, and surface finish measurements, can provide valuable insights into tool performance. Deviations from expected results can indicate potential problems.
  • Tool Life Tracking: Monitoring the tool’s operating time or the number of parts machined before the replacement can help establish tool life benchmarks. This information aids in planning tool changes and optimizing production schedules.

6. Quality and Reliability Considerations

A. Assessing Tool Quality: Reputable Manufacturers, Certifications

When considering the quality of a tool, it is necessary to look for reputable manufacturers and certifications they have obtained. Professional CNC tool suppliers have a track record of producing high-quality and reliable tools. Moreover, they invest in research and development, employ rigorous quality control measures, and adhere to industry standards. These manufacturers have built a reputation for delivering tools that meet or exceed customer expectations.

Certifications play a significant role in assessing tool quality. Certifying bodies conduct assessments and tests to ensure that tools meet specific standards and requirements. Some certifications include ISO 9001, ISO 14001 and ANSI certifications. These certifications show that the manufacturer has implemented quality control processes and caters to industry standards.

B. Importance of Tool Reliability and Consistency

Tool reliability and consistency are key factors to consider when evaluating their quality. Moreover, reliable tools are designed to consistently perform their intended function without frequent failures. They provide dependable performance over time, enabling users to rely on them for their projects.

Consistency is important. Therefore, tools should provide consistent results and ensure that the performance remains the same under similar operating conditions. Inconsistent tools will lead to errors and variations in output, which can impact the quality of work.

Reliable and consistent tools contribute to improved efficiency, productivity, and safety. They minimize the risk of unexpected failures, downtime, or rework, thereby saving time and resources. Moreover, they inspire confidence in users, allowing them to work with peace of mind and achieve better outcomes.

C. Evaluating Warranties, Customer Support Options

When purchasing tools, evaluating warranties and customer support options is necessary to ensure peace of mind and assistance if any issues arise. Customer support options are also important. CNC tools suppliers with reliable customer support can provide assistance and guidance in case of problems or inquiries.

How MDA can Assist Industries with their CNC Needs?

MDA is a reputable CNC machine shop located in Toronto, Canada. We provide valuable assistance to industries with their CNC tool needs, offering a wide range of expertise, experience, and services.

We excel in assisting industries by providing customized CNC tool solutions. Our experts understand the unique requirements of different sectors, such as automotive, aerospace, medical, and more.

With our extensive knowledge and experience, we cater to the specific needs of each industry. By collaborating closely with their clients, we ensure that the CNC tools we provide are tailored to meet the exact specifications and demands of the industry.

With years of experience in the field, we have developed strong expertise in CNC machining. Our team of skilled professionals possesses deep knowledge and technical know-how in CNC tooling.

 

Transform your machining design with our CNC tools service – Contact us to unlock precision and excellence today!

 

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Our expertise allows us to tackle complex projects, intricate designs, and precision machining tasks with efficiency and accuracy. Skilled machinists and engineers adeptly utilize advanced CNC machines and cutting-edge technology to deliver high-quality results.

We place a strong emphasis on quality and customer satisfaction and implement stringent quality control processes to ensure that our CNC carbide tools meet the highest standards.

We conduct thorough inspections and testing on each tool to guarantee its reliability and durability and are committed to delivering CNC tools that exceed customer expectations.

Customer satisfaction is a top priority for us. We strive to build strong and long-lasting relationships with our clients and achieve this by providing excellent customer service, personalized attention, and timely project delivery.

We understand the importance of open communication and actively engage with customers to understand their needs and address any concerns. Our experts value customer feedback and continuously work to improve services, ensuring maximum satisfaction.

A Complete Guide to Working with a Custom Machine Shop

by | May 15, 2023 | CNC Machining Guides, Custom Machine Shop

custom machine shop

In today’s fast-paced world, businesses constantly seek ways to gain a competitive edge. Custom machining services have become increasingly popular as they allow businesses to create unique products that meet their needs. 

However, finding the right custom machine shop can be daunting, especially for those new to the industry. At MDA, we are a full-service custom machine shop with years of experience in the industry. Our team of skilled machinists and engineers utilizes the latest technology and equipment to produce precision parts and components for various industries, including aerospace, defense, and medical. We pride ourselves on delivering high-quality products and services while maintaining open communication and transparency with our clients.

This guide will provide a comprehensive overview of everything you need to know when working with a custom machine shop.

Understanding Your Project Needs

When working with a custom machine shop, it’s essential to understand your project needs clearly. This will help ensure that the finished product meets your requirements and expectations. Here are some critical steps to follow:

Defining project requirements: Start by clearly defining your project’s purpose, the product’s intended use, and any specific features or functions required. This will help the machine shop understand your goals and develop a plan.

Identifying necessary materials and tolerances: Identify the materials needed to produce the desired result based on your project requirements. You should also determine any required tolerances or specifications, such as dimensions or surface finish.

Communicating project specifications to the machine shop: Once you clearly understand your project needs, it’s essential to communicate these specifications to the machine shop. This can be done through detailed drawings, CAD files, or other documentation. Ask the machine shop questions and clarify any uncertainties before production begins.

At MDA, we understand the importance of fully understanding our customers’ project needs. Our team of experts is dedicated to working closely with clients to ensure that we deliver high-quality, customized products that meet their exact specifications.

Choosing the right custom machine shop

Choosing the right custom machine shop is critical to the success of your project. Here are some key factors to consider when making your decision:

Researching potential machine shops: Start by researching potential machine shops in your area or online. Look for machine shops specializing in your type of project and have experience working with materials similar to those you need.

Evaluating machine shop capabilities and equipment: Look for a machine shop with the equipment and technology necessary to handle your project requirements. Ask about the types of machines they have, their production capabilities, and their quality control measures.

Assessing machine shop experience and expertise: Experience is vital in custom machining. Look for a machine shop with a proven track record of successful projects and a team of experienced machinists.

Reviewing customer feedback and testimonials: Check online reviews and testimonials from past customers to get a sense of the machine shop’s reputation and level of customer satisfaction, which can also be assessed through the use of specialized customer feedback platforms.

At MDA, we pride ourselves on our state-of-the-art equipment, experienced team, and excellent customer service. We have a proven track record of delivering high-quality custom-machined parts for various industries.

Communication and Collaboration

Working with a custom machine shop requires effective communication and collaboration to ensure the success of your project. Here are some key aspects to keep in mind:

Establishing clear lines of communication: Effective communication is essential for the smooth functioning of any project. Establishing clear lines of communication with your machine shop from the outset is vital. This includes identifying the primary point of contact and establishing the preferred mode of communication.

Collaborating with the machine shop during the design process: Collaboration with the machine shop during the design process can lead to better outcomes. By involving the machine shop in the design process, you can use their expertise to optimize your design for manufacturing. The machine shop can provide valuable feedback on the manufacturability of your design and suggest alternative approaches that can save time and money.

Providing feedback and addressing concerns: As your project progresses, it is essential to maintain ongoing communication with the machine shop and provide feedback as needed. If you encounter any concerns or issues with the project, it is essential to address them promptly to avoid delays or complications.

As a custom machine shop, MDA takes great pride in our ability to collaborate effectively with our clients. Our team of experienced engineers and technicians is always ready to work with you to ensure the success of your project.

Quality Control and Inspection

When it comes to custom machining, quality is crucial. Ensuring that the finished product meets your expectations and requirements is essential. Quality control and inspection play a crucial role in achieving this goal.

Ensuring quality control throughout the manufacturing process: To maintain the desired level of quality, the custom machine shop should have a comprehensive quality control plan in place. This plan should cover everything from raw material selection to final product inspection. It should also include measures to address any issues during the manufacturing process.

Conducting inspection and testing procedures: The machine shop should perform regular inspections and testing procedures to ensure that the product meets the required specifications. This may involve dimensional measurements, material testing, and other tests specific to the project.

Addressing quality issues promptly and effectively: Even with the best quality control measures, issues can still arise. It’s essential to have a plan in place to address any quality concerns promptly and effectively. This may involve reworking or replacing parts, adjusting manufacturing processes, or other corrective actions.

At MDA, we take quality seriously. Our quality control and inspection processes are designed to ensure that every product we produce meets the highest standards of quality and reliability. We work closely with our clients to understand their specific quality requirements and strive to exceed their expectations at every stage of the manufacturing process.

Read More: Why MDA is the Best CNC Machine Shop in Canada?

Delivery and Follow-Up

After all the hard work of collaborating with a custom machine shop to bring your project to life, ensuring a smooth delivery and follow-up process is essential. This section will cover the key steps to ensure your project is delivered on time and to your satisfaction.

Establishing delivery timelines and expectations: It’s essential to establish clear timelines and expectations with your machine shop from the outset. Ensure you clearly understand how long the manufacturing process will take, and agree on a delivery date that works for both parties. You should also discuss any special delivery requirements, such as packaging or transportation, to avoid surprises or delays later.

Communicating any delays or changes in schedule: Despite everyone’s best efforts, sometimes delays or changes in schedule are unavoidable. If this happens, it’s essential to communicate with your machine shop as soon as possible to avoid any further complications. Keep an open line of communication and be proactive in addressing any issues.

Following up with the machine shop to ensure satisfaction: Once your project has been delivered, take the time to review the final product and ensure it meets your expectations. If you have any concerns or issues, don’t hesitate to bring them up with your machine shop. A professional custom machine shop should be committed to ensuring their clients are satisfied with the final product and willing to make any necessary adjustments to achieve this.

At MDA, we take great pride in delivering high-quality products on time and to our client’s satisfaction. Our team of experienced professionals is committed to providing clear communication and collaboration throughout the entire custom machining process.

Get CNC parts for various industries. We are happy to hear about your requirements!! Talk to our expert.

 

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Conclusion

In conclusion, choosing the right custom machine shop near me is crucial to the success of any project. It ensures that your project specifications are met with precision and quality. As a leading custom machine and fabrication shop, MDA has the capabilities and expertise to deliver exceptional results for your machining needs with proven quality assurance.

We prioritize quality control and customer satisfaction, working closely with clients to ensure their projects meet expectations.

Get in touch with us at MDA if you have any custom machining needs. Let us help you bring your ideas to life with our state-of-the-art equipment, experienced team, and dedication to excellence.

Materials 101: Entrepreneur’s guide to selecting the Right CNC Machining Material

by | Jul 24, 2018 | CNC Machining, CNC Machining Guides

CNC Machining Material

Right materials make the best applications.

Material selection is a crucial step to get your CNC project right. Think of it as assembling a Subway meal based on your diet plan; you add meats if your diet chart asks for more protein, and greens for a vitamin fulfill. Similarly, selected materials must cover your design prerequisites— hardness, rigidity, thermal stability, and chemical resistance just to name a few. And your budget as well, of course.

Material characteristics are especially important when you require high precision CNC machined parts with complex designs. For instance: amorphous materials like metallic glass and polymers generally hold tighter tolerances than, say, aluminum.

In the following article, we will elaborate more on material types, their characteristics, tips and guidelines on choosing the right materials, and more. Let’s start with the basic: the material selection process.


CNC Materials Selection Process
If you’ve decided to jump the CNC machining wagon, have a valid prototype handy and your budget figured out, it’s time to select the best suitable materials for your project. The basic three steps to material selection are:

Step 1. Define your material requirements: Based on your design, make a high-level list of material prerequisites. Do you need a malleability? Or perhaps a sturdier material? Laser polishing for a surface finish? Consider all the mechanical, physical, environmental, and budget factors.

Step 2. Pin down qualified materials: Identify potential candidates that fulfill your material requirements. Notice, we’re are focusing on ‘candidates’ not ‘candidate’. There’s a solid reason behind it. Have a look:

Here’s what Ronald E. Giachetti, of National Institute of Standards and Technology, wrote in his paper on Manufacturing Process and Material Selection During Conceptual Design:

“The material and manufacturing process selection is performed early in the product development process. At this stage, it is inappropriate to select a single material or process without evaluating all the alternatives. The selection of sets of possible candidate materials and processes allow for greater flexibility in the product development process. The more alternatives, the greater the manufacturing flexibility.”

 Hack:  Make sure you approach readily available materials— it’ll help cut costs and efforts. 

Step 3. Now, select the most appropriate material: The third step is the final showdown: choosing the material with maximum functionality in minimum costs. Or, the materials that check most on your prerequisites list.

In the next section, we will talk about the most popular materials and their properties.


CNC Material Selection- Guidelines

Metals
Most common metals in the CNC machining universe are:

1. Aluminum
Most popular of the bunch; used for both mechanical and aspect components.
(a) Physical properties:
● Medium physical strength (<500 MPa) (Note: Aluminium 7075 is one of the strongest metals at >500 MPa; but it’s a bit pricey)
● Corrosion resistance
● Temperature resistance (<400°C)
(b) Mechanical properties:
● High machinability. Can be machined quicker than other metals
● Readily available; inexpensive
(c) Industries:
● Automotive ( gears and shafts etc.)
● Aerospace (aircraft fittings etc.)
● Healthcare (medical equipment)
● Consumer electronics (electronic housings)


2. Cold Rolled Steel
(a) Physical properties:
● High physical strength (Increases the strength of the finished product by 20%)
● Provides perfect precision as it creates smaller products
● Can handle tighter tolerances
(b) Mechanical properties:
● Medium machinability.
● Moderately expensive
(c) Industries:
● Manufacturing (Machinery parts)
● Aerospace (aircraft fittings etc.)
● Construction
● Consumer electronics (electronic housings, Jigs & fixtures)


3. Stainless Steel
(a) Physical properties:
● Hardness
● Chemical resistance
● High strength (>500 MPa)
● Temperature resistance ( Very high >500°C)
● Corrosion resistance
(b) Mechanical properties:
● Good machinability
● Inexpensive
(c) Industries:
● Automotive
● Aerospace (aircraft fittings etc.)
● Healthcare (surgical equipment)
● Consumer electronics (electronic housings)
● Food Industry
● Marine applications
● Chemical Processing
● Marine applications


4. Brass
Used for high volume applications.
(a) Physical properties:
● Medium strength
● Natural Corrosion resistance
● Low-Temperature resistance (<250°C)
● High tensile strength
(b) Mechanical properties:
● High machinability.
● Readily available; moderately expensive
(c) Industries:
● Automotive ( mechanical parts, valves & nozzles)
● Architecture
● Healthcare (medical equipment
● Consumer goods
● Electrical hardware


Exotic alloys

1. Inconel
(a) Physical properties:
● Temperature resistance
● Corrosion resistance
● Medium strength
(b) Mechanical properties:
● Moderate machinability
● Moderately expensive
(c) Industries:
● Automotive
● Aerospace
● Healthcare
● Consumer electronics


2. Copper
(a) Physical properties:
● Highest electric conductivity
● High corrosion resistance
● Thermal conductivity
● Low chemical resistance (especially to acids, halogens sulphides, and ammonia solutions)
(b) Mechanical properties:
● High machinability. Can be machined quicker than other metals
● Readily available; moderately expensive
(c) Industries:
● Automotive (cooling systems and heat exchanger, valves and radiators etc)
● Aerospace Healthcare (medical equipment)
● Consumer electronics (electronic housings)

Outside of this wide range of metal materials, it’s also possible to use plastics, wood, and even fiberglass and foams with CNC machining technology.


Plastics

1. PVC
(a) Physical properties:
● High strength
● Corrosion resistance
● Temperature resistance
● Chemical resistance
(b) Mechanical properties:
● High machinability
● Readily available; inexpensive
(c) Industries:
● Automotive
● Aerospace
● Healthcare
● Consumer electronics
● Food Industry
● Chemical


2. Nylon
(a) Physical properties:
● High physical strength
● Good impact strength
● High corrosion and abrasion strength
(b) Mechanical properties:
● High machinability. Can be machined quicker than other metals
● Readily available; inexpensive
(c) Industries:
● Automotive (insulators, bearings)
● Aerospace
● Healthcare
● Consumer electronics

 

Now that you know about different materials, you can select the ones that best suit your CNC project. We, at Machining Design Associated Ltd., offer exceptional CNC machining parts with desired tolerances. Get in touch to know more!

CNC Machining Tips: Why should you go for Flat Bottom Tools?

by | Feb 5, 2018 | CNC Machine Tools, CNC Machining, CNC Machining Guides

Flat Bottom Tools

Proper tooling is the most important part of every machining process. We need to have specific functioning milling tools if we want to develop milling parts. Same goes for all other operations. Think of it as cooking; one cannot choose potatoes as the main ingredient when making an apple pie. Yep, this analogy is not far from reality.

So we have different tools for different operations in a CNC machining shop. We might reuse some particularly reusable tools, replace the old types with advanced ones, but that’s about it. True, we focus on quality and durability, something that’ll extend its working capability (and less wear and tear). But, did you ever give a thought to tool shape?

If you didn’t, we’ll tell you why you should pay attention to your tool shapes. Let’s get to the BOTTOM of the CNC machine tools world!

Benefits of Flat Bottom Tools:

At Machining Design, we work with a plethora of tools but flat bottom tools have definitely won our hearts (and infrastructure) over. Here’s a list of reasons why we would suggest it to you as well:

1. Lower Machining Costs

As CNC’rs, we’re all aware that machining is not cheap. Add in tool maintenance and replacement costs, and it’s going to cost us more than ever. While we cannot cut on labor and operational costs, we can definitely save some using the flat bottom tools.

Now, how do they make that possible?

For one, they eliminate the extra run-time by fitting exactly where they are required. Due to their shape, they are often sturdier when compared to traditional machining tools. Carbide fit flat bottom tools beat every other tool in terms of durability. Imagine the amount of money you’ll save!

2. They are more functional

There is a list of drilling operations where these flat bottom tools play the role of a hero. Take thin plate drilling for example. When performing this operation, regular tools often face irregularities due to pushing materials through the exit hole. This derails us from achieving the desired perfection in the drilled holes. Flat bottom drills are extremely beneficial here as due to their general geometry they even downward forces. Hence, more clean surfaces.

3. They don’t create burrs

Unlike traditional tools, using flat bottom drilling tools helps us avoid unexpected (and undesired) burrs on the other side of the material. Make way for straighter and regular holes.

4. Is fit even for angular functions

Flat bottom drills are perfect for irregular surfaces due to their geometry, especially if it’s required to perform angular or tilted operations.

5. It’s stable

When countering with a half hole drilling, flat bottom drilling is proven to extremely beneficial. This is because due to the lack of material on both sides of the drill, any other machining tool may walk to the side of the material, creating an extremely undesirable situation. A flat bottom drill works closely on the entire cutting geometry, making it perfect for drilling half holes even on the edge of the material.

Working with flat bottom CNC tools definitely, make our lives (and machining process) easier. It’s easy to keep, light on pockets and DURABLE. Now, ain’t this what all of us need in our CNC machine shop?

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