CNC Stainless Steel Milling Machining Aluminium Brass Metal Parts CNC Machining Service

Comparison of Brass and Aluminum Alloy CNC Machining Processes and Key Technical Points:

1. Material Properties and Tool Selection

Brass Machining:

--Use diamond-coated tools (recommended cutting speed Vc 200-400 m/min)

--Feed per tooth 0.05-0.15 mm/tooth, depth of cut 1-3 mm

-Pay attention to chip evacuation; a high-pressure coolant system is recommended.

Aluminum Alloy Machining:

--Carbide tools (recommended cutting speed Vc 300-800 m/min)

--Feed per tooth 0.1-0.3 mm/tooth, depth of cut 2-5 mm (roughing)

--Use a straight front Reduce sticking with corner cutters

2. Processing Optimization Recommendations

Brass Machining:

--Use dry cutting or minimal lubrication techniques

--Control cutting temperature (recommended <200°C)

--Optimize surface finish: Increase cutting speed from 150 m/min to 200 m/min, while reducing feed rate to 0.05 mm/min

Aluminum Alloy Machining:

--Use water-soluble coolant to prevent thermal deformation

--Maintain tool sharpness (recommended 50-100 pieces per sharpening interval)

--Control ambient temperature at 20 ± 1°C to minimize thermal deformation

Product attributes

CNC workshop

CNC workshop

CNC workshop

CNC workshop

CNC workshop

CNC workshop

CNC Milling Parts 

Explore our CNC Milling Parts Gallery to see precision-crafted components manufactured with high accuracy and quality.

Tolerances for CNC Milling

Core Characteristics of Milling Processing

1. Multi-Edge Cutting and Efficiency

-- Milling cutters have multiple cutting edges (e.g., end mills with 4-6 edges), which can participate in cutting simultaneously, sharing the load and improving efficiency (30%-50% higher than single-edge tools).

-- Suitable for large feed rates or high cutting speed machining, such as surface milling with a cutting depth of up to 5-10mm.

2. Intermittent Cutting and Impact Vibration

-- The cutter teeth engage and disengage from the workpiece periodically, causing fluctuations in cutting force, requiring machines with good rigidity (e.g., heavy-duty milling machines) to ensure precision.

-- Intermittent cutting facilitates tool cooling and extends tool life, but durable tool materials (e.g., carbide) must be used.

3. Process Flexibility-- By changing tools (e.g., face mills, T-slot mills), it can process complex features such as flat surfaces, grooves, gears, and curved surfaces.

-- Supports multi-axis linkage (e.g., five-axis milling) to achieve machining of three-dimensional complex profiles (e.g., mold cavities).4. Controllable Surface Quality-- Adjusting cutting parameters (e.g., feed rate, speed) can control surface roughness (Ra 0.8-12.5μm).

-- End mills' secondary cutting edges can polish surfaces with roughness down to Ra 0.4μm.Range of Milling Processing

1. Basic Processing-- Flat/Step Surfaces: Face mills (end mills) process large flat surfaces, three-edge mills process steps.

-- Grooves/Keys: End mills mill straight grooves, keyway cutters process key slots (accuracy IT8-IT9).2. Complex Feature Processing

-- Gears/Threads: Modular shaped end mills process gears, thread mills process threads.

-- Cavities/Molds: Ball end mills process three-dimensional curves (e.g., injection molds).

2. Special Processing

-- Cutting/Indexing: Saw blades mill cut workpieces, dividing heads achieve evenly spaced holes/teeth.

-- Special-Shaped Slots: Dove-tail milling cutters and T-slot mills process specific connection structures.Typical Application Scenarios

-- Automotive Manufacturing: Milling flat surfaces of engine blocks, processing gear case shells.

-- Aerospace: Frameworks of fuselages, structural components of landing gear.

-- Electronics: Mounting slots for circuit boards, arrays of heat sink fins.

Comparison with Other

ProcessesTurning:

Suitable for rotating parts (e.g., shafts), milling is better for polyhedral/complex profiles.

Drilling:

Milling can replace some drilling operations (e.g., large diameter holes) but with higher precision.