Custom CNC Machining Complex Parts CNC Machined Products Steel Milled Metal Parts

CNC machining, short for computer numerical control machining, is a subtractive manufacturing

technique that utilizes computerized controls and machinery to selectively remove material layers

from a solid block. Precise cuts in the material are orchestrated through programmed instructions,

allowing automated machinery to execute the machining tasks with accuracy and efficiency.

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The CNC machining process predominantly employs metals as its primary materials.

These metals encompass alloy steel, carbon steel, cast iron, stainless steel, aluminum, copper,

magnesium, and zinc.

Nonetheless, this versatile process can also be applied to machine plastic components and work

with an array of other materials, including ceramics, composites, thermoplastics, and thermosets.

Post-processing and surface finishes for CNC machining

CNC-machined parts as they emerge from the machine often exhibit visible tool marks,

a feature that may not align with your specific part requirements.

Fortunately, there exists a multitude of post-processing techniques aimed at enhancing the

surface appearance and elevating attributes such as wear resistance, corrosion resistance,

and chemical resistance.

Methods like anodizing, bead blasting, and powder coating present viable options for refining

the final presentation of your custom parts, allowing you to achieve the desired surface

quality and performance characteristics.

Specialist Industries

We’ve manufactured millions of parts for all sorts of applications, but we’re especially

knowledgeable in these areas.

1. Aerospace & aviation
2. Automotive
3. Industrial machinery
4. Consumer electronics
5. Robotics & automation
6. Medical

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Factors Influencing Machining Costs

The cost of CNC machining projects is influenced by various factors that play a significant role

in cost estimation. Manufacturers seeking to manage expenses effectively and optimize their

processes should be aware of these key elements that determine machining costs:

1. Material Selection:
The choice of raw material directly impacts machining costs.
Different materials have varying costs, availability, and machining characteristics.
High-performance alloys may be more expensive than common metals.
Material availability affects pricing, and considering material type is essential for cost calculation.

2. Complexity of Design:
The complexity of the machined part affects cost determination.
Intricate features, tight tolerances, and complex geometries require advanced machining

techniques, specialized tooling, and longer machining time.
Producing complex components requires additional precision and expertise, increasing overall costs.

3. Machining Time:
Machining time is a critical cost factor.
Longer machining times result in higher costs.
Machining time includes cycle time, setup time, and overall production efficiency.
Optimizing processes to reduce cycle time and enhance setup efficiency minimizes costs and

improves productivity.

4. Machine Tooling:
The choice and management of machine tooling impact machining costs.
Tooling costs, including purchase, maintenance, and replacement of cutting tools, should be

considered.
Cutting tool lifespan and changeover time affect production efficiency and costs.
Proper tooling selection, maintenance, and optimization control expenses.

5. Volume and Batch Size:
Production volume and batch size directly affect machining costs.
Economies of scale apply to larger production volumes, reducing the cost per part.
Balancing volume with setup time is crucial; small batches may have higher costs due to

increased setup time, while larger volumes benefit from lower per-part costs.

6. Labor Costs:
Labor costs, including wages for CNC machining engineers and operators, contribute significantly

to expenses.
Skilled operators with expertise in CNC programming, setup, and operation are essential.
Labor-intensive operations or complex part requirements may involve additional labor costs.

7. Overhead Costs:
Overhead costs related to CNC machining operations impact overall cost calculations.
These costs encompass facility expenses, utilities, administrative costs, quality control, and

inspection.
Managing and optimizing overhead expenses are vital for cost control and competitiveness.

8. Scrap and Rework:
Scrap and rework costs are crucial considerations.
Material waste due to errors or deviations from specifications increases costs.
Effective quality control measures, precision machining techniques, and robust inspection

processes minimize scrap and rework, reducing overall machining expenses.

Understanding and analyzing these factors enables manufacturers to identify areas for improvement,

implement cost-saving measures, and optimize CNC machining processes for enhanced efficiency

and profitability.