Product Specification

CNC Metal Machining Part Service Parts CNC Machining OEM CNC Parts Manufacturer

CNC machining operates on subtractive processes, where the feedstock is machined to its final

form through the removal of material. This includes activities such as drilling holes, boring lots

and pathways, and shaping metal stock into new material with varying tapers, diameters, and

shapes.

In contrast to additive manufacturing methods that involve the addition, layering, and deformation

of materials to achieve a specified shape, CNC machining achieves shapes by subtracting material.

This distinction also separates it from injection molding, where material is injected in a different

state of matter using a mold and formed to a specified shape.

Product Details

Materials for CNC machining are typically classified into three major categories:

plastics, soft metals, and hard metals. Examples encompass aluminum, bronze, copper,

ceramics, plywood, steel, stone, wood, zinc, and various others.

Materials characterized by ease of manipulation and favorable properties are commonly preferred

over alternative options.

CNC Machining Applications

CNC machining stands as a revolutionary force across various industries, offering unparalleled

versatility. In woodworking, CNC machines transform the production of wooden furniture,

providing a time-efficient and cost-effective alternative to manual craftsmanship.

The technology's precision is harnessed in lettering and engraving systems, where it serves to

mark patterns or text onto surfaces, meeting artistic and serialized requirements.

Within the electrical industry, CNC machining plays a pivotal role in tasks such as crafting

component mounting holes in printed circuit boards and producing heat sinks for electronics.

The pharmaceutical sector benefits from CNC machines in manufacturing precise equipment,

including metering pumps, ingredient-dispensing nozzles, and packaging components.

Even in the dynamic consumer goods industry, CNC machining contributes significantly to the

creation of custom material-handling machinery for the food and beverage sector, along with

the production of injection-molded plastic molds essential for food packaging.

Company Profile

FAQ's

1. What's the general surface texture of CNC milled and turned parts?

The surface texture of machined milled parts is commonly around 3.2μm (or 1.6μm for more

recent machines). In the case of turned parts, a finer surface finish is achieved, reaching a

roughness of 0.8μm. Notably, this enhanced surface texture in turning is accomplished without

the necessity of adjusting machining speeds.

2. The cost of CNC machining a part is shaped by a variety of factors, including:

1. Material: Material selection introduces cost variations, with materials like aluminum being

more economical to machine compared to others like Inconel, attributed to factors such as tool

wear and cutting speeds.

2. Complexity: Parts featuring intricate designs incur higher machining costs. The complexity

of surface shapes, for instance, significantly influences overall machining expenses.

3. Tolerances: The precision demanded by dimensional tolerances impacts CNC machining costs.

Imposing overly tight tolerances on non-critical features can lead to unnecessary cost escalation.

4. Surface Finish: Achieving mirror finishes demands specialized tools and machining strategies,

extending machining time and, consequently, increasing costs.

5. Quantity: Production volume is a key determinant of costs. Low-volume production tends to

be costlier per part, as initial setup and programming costs are distributed over a smaller

production run.

3. What tolerances can achieve?

Tolerance specifications are not one-size-fits-all and are influenced by factors like part size, design

geometry, the number and size of features, material properties, surface finish, and the

manufacturing process. Upon order confirmation, a Design for Manufacturing review is conducted

to pinpoint areas for potential modification to enhance manufacturability.

Clearly indicating critical tolerance areas in your design is beneficial, allowing for adjustments to

streamline production time and costs. General tolerance guidelines are available for CNC machining

in metal and plastic, plastic injection molding, CNC metals and plastic injection molding materials,

metal 3D printing (+/- 0.5mm), and an expected shrinkage rate of +/- 0.15% for vacuum casting.

It is imperative to specify all manufacturing and technical requirements clearly in the 2D drawings

for accurate adherence.