CNC FAQs

We often encounter many problems in the CNC industry, and here we will answer them one by one.

Certifications ISO 9001:2015 | AS9100D | ITAR

Frequently Asked Questions about CNC Machining Services

We are committed to providing exceptional precision CNC machining services. Below are some common questions regarding our CNC machining capabilities, processes, and technology.

Q1: What is CNC Machining?

A1: CNC (Computer Numerical Control) Machining is a subtractive manufacturing process that uses computer-controlled machine tools to produce complex parts. It precisely controls the movement of cutting tools along multiple axes, removing material from a raw workpiece to achieve the desired shape and dimensions according to programmed instructions.

Q2: What specific types of CNC machining services does CNCMekalite offer?

A2: We specialize in:

CNC Milling: Ideal for fabricating parts with complex 3D shapes, flat surfaces, holes, slots, and cavities. We utilize multi-axis milling machines for efficient processing.
CNC Turning: Primarily used for manufacturing round or cylindrical parts such as shafts, bushings, connectors, etc., achieving high precision for rotationally symmetrical components.
Precision Grinding: After initial CNC machining, if higher surface finishes or tighter tolerances are required, we use precision grinding, especially suitable for hard materials and surfaces demanding extreme accuracy.
Wire Cut EDM (Electrical Discharge Machining): Best suited for machining conductive materials that are difficult to process with traditional mechanical methods, very hard materials, or parts with complex features like sharp internal corners or fine slots.

Q3: How precise are your CNC machines? What tolerance levels can you achieve?

A3: We boast advanced CNC machines capable of achieving extremely high processing precision. Specific tolerance levels depend on part geometry, material, and the machining process, but we can routinely achieve tolerances of ±0.005mm to ±0.01mm or even tighter. For certain specialized parts and materials, we can even push for even smaller tolerances.

Q4: Can you machine parts of maximum or minimum sizes?

A4: Our machining capabilities cover a broad range. Specific dimensions depend on the part’s complexity and the required machining type. We are equipped to handle everything from tiny, intricate precision components to larger structural parts. Please provide your drawings for evaluation.

Q5: Do your CNC machines support multi-axis machining?

A5: Yes, we are equipped with state-of-the-art multi-axis CNC machines (e.g., 3-axis, 4-axis, 5-axis milling machines). This allows us to machine complex parts in a single setup, significantly improving efficiency, reducing potential errors, and ensuring superior geometric accuracy and surface quality.

Q6: What CAD/CAM software do you use in your machining processes?

A6: We utilize industry-leading CAD (Computer-Aided Design) and CAM (Computer-Aided Manufacturing) software, such as SolidWorks, AutoCAD, Mastercam, Siemens NX, and others. This ensures seamless integration from design to manufacturing, optimizes tool paths, and facilitates highly efficient and precise machining.

Q7: How do I submit a CNC machining project request?

A7: Please provide detailed part drawings (preferably 3D CAD models in formats like STEP, IGES, Parasolid), 2D engineering drawings (in PDF format, including dimensional tolerances, surface roughness, heat treatment requirements), the required material, quantity, and any other special requests. You can email these files to us.

Q8: What is the typical CNC machining process at CNCMekalite?

A8: Our typical CNC machining process includes:

Project Evaluation & Quotation: Technical assessment based on your drawings and requirements, followed by a detailed quote.
Design & Programming: Utilizing CAD/CAM software for part design verification and CNC program generation.
Material Preparation: Sourcing and preparing high-quality raw materials.
CNC Machining: Processing parts on advanced CNC machines, including turning, milling, grinding, etc.
Quality Inspection: Rigorous dimensional, form, and surface quality checks using precision inspection equipment.
Post-processing (Optional): Applying surface treatments, heat treatments, etc., as per requirements.
Cleaning & Packaging: Thorough cleaning of parts and protective packaging.
Delivery: Shipment of qualified parts to the customer.

Q9: How do you ensure the quality and precision of CNC machined parts?

A9: We ensure the highest quality through:

Rigorous Design Review: Conducting Design for Manufacturability (DFM) reviews to identify potential issues early.
Precision Machines & Tooling: Investing in world-leading CNC machines and high-quality cutting tools.
Strict Process Control: Our experienced engineers and technicians optimize machining parameters and processes.
In-line & Off-line Inspection: Performing in-process checks and comprehensive final inspections using precision equipment like Coordinate Measuring Machines (CMM), Optical Measuring Machines (e.g., Mitutoyo SmartScope), profile projectors, height gauges, calipers, and micrometers.
Environmental Control: Maintaining a stable workshop environment to minimize the impact of temperature, dust, etc., on precision.
ISO 9001:2015 Certification: Adhering to a strict quality management system from raw material intake to finished product delivery.

Q10: Do you offer optimization suggestions for existing CNC programs or designs?

A10: Yes, absolutely. Leveraging our years of CNC machining experience, our engineering team is happy to provide Design for Manufacturability (DFM) advice. This helps you optimize your part designs, improve machining efficiency, reduce costs, and ultimately ensure the best performance of the final product.

Q11: Which industries do your CNC machining services primarily serve?

A11: We provide precision CNC machining services for several demanding industries, including but not limited to:

Semiconductor: Manufacturing high-precision components and fixtures for semiconductor equipment.
Medical Devices: Producing surgical tools, medical instrument parts, and other components adhering to stringent standards.
Aerospace: Machining lightweight, high-strength, and highly reliable aerospace components.
Automation Equipment: Creating precise motion components for automated production lines and robotics.
Oil & Gas: Producing corrosion-resistant, high-pressure components for challenging environments.
Optics & Electronics: Fabricating mounting brackets for optical devices and precision electronic equipment enclosures.

Frequently Asked Questions (FAQ) - CNC Turning Services

At CNCMekalite, our CNC Turning services form a core part of our precision machining capabilities. Here you’ll find answers to common questions about our expertise in producing high-quality cylindrical components.

Q1: What exactly is CNC Turning and how does CNCMekalite utilize it?

A1: CNC Turning is a machining process that involves rotating a workpiece while a stationary cutting tool removes material to create cylindrical shapes. At CNCMekalite, we use advanced multi-axis CNC turning centers to produce precise round parts with exceptional accuracy, efficiency, and surface finish. This method is ideal for components requiring rotational symmetry.

Q2: What types of parts are best suited for CNC Turning at CNCMekalite?

A2: Our CNC Turning services are perfectly suited for fabricating a wide range of cylindrical and conical parts. Common examples include:

Shafts (motor shafts, drive shafts)
Pins and Rods
Bushings and Sleeves
Connectors and Couplings
Spacers and Washers
Bases and Housings for circular components
Custom fasteners Essentially, any part that is primarily round or has intricate features around a central axis can be efficiently produced through CNC turning.

Q3: What specific capabilities do your CNC Turning centers offer beyond basic turning?

A3: Our state-of-the-art CNC Turning centers are equipped with advanced features, allowing us to perform complex operations in a single setup:

Live Tooling: Enables milling, drilling, and tapping operations on the turned part without moving it to a separate machine, saving time and improving accuracy.
Sub-Spindles: Allows for machining on both ends of a part, passing it between spindles to complete a component in one continuous process.
Y-axis Machining: Provides additional flexibility for off-center drilling and milling operations on the diameter of the part.
Automatic Bar Feeding: Facilitates high-volume production of smaller turned parts directly from bar stock. These capabilities enable us to produce highly complex components with features like cross-holes, flats, hexes, and threaded sections efficiently.

Q4: What materials can CNCMekalite turn?

A4: We have extensive experience turning a wide variety of materials, both metals and plastics, including but not limited to:

Metals: Aluminum alloys (6061, 7075), Stainless Steel (303, 304, 316, 420, 17-4 PH), Brass, Copper, Titanium, Tool Steels, Mild Steel (1018, 1045).
Engineering Plastics: PEEK, Delrin® (Acetal), Nylon, PTFE (Teflon), UHMW-PE. Our team can advise on the best material for your specific application and requirements.

Q5: What level of precision and surface finish can be achieved with your CNC Turning services?

A5: Our meticulous process control and advanced machinery allow us to achieve exceptionally tight tolerances and superior surface finishes. We can regularly hold tolerances as fine as +/- 0.005mm (0.0002 inches) and often even tighter for specific features. For surface finish, we can achieve very low Ra (Roughness average) values, depending on the material and part geometry, often better than Ra 0.8 µm (32 µinch). We ensure excellent concentricity, roundness, and perpendicularity for all turned components.

Q6: Can you handle both high-volume production and low-volume prototyping for turned parts?

A6: Yes, absolutely. Whether you need a few custom prototypes for testing and development, medium-volume production runs, or high-volume series production of precision turned parts, CNCMekalite has the capacity and flexibility to meet your demands. Our efficient setups and automated capabilities facilitate cost-effective production at all scales.

Q7: How does CNC Turning integrate with your other services (e.g., milling, assembly)?

A7: Our CNC Turning services are often performed in conjunction with our other capabilities, such as CNC Milling, Precision Grinding, and Wire Cut EDM, to create complete, multi-featured components. Furthermore, we offer comprehensive sub-assembly services, integrating turned parts with other machined components, purchased parts, and fasteners to deliver ready-to-use sub-assemblies. This “one-stop-shop” approach streamlines your supply chain and ensures seamless project execution.