Precision Machining
Overview
Add value to your project with EMEC's precision machining. We expertly machine flat and cylindrical components, consistently meeting your specific tolerances.
Precision machining is the manufacturing process of producing parts with exceptional accuracy, often within tolerances as tight as +/- 0.005 inches
CNC machines are at the heart of this process, utilising automated tools to precisely cut, shape, and finish raw materials based on pre-programmed instructions.
The Advantages of Precision Machining
1
Precision and Accuracy
Machining tolerances down to +/- 0.005 mm enables micron-level accuracy for components like medical devices and optics. Programmable tool paths and CNC equipment provide repeatability.
2
Complex Geometries
Multi-axis milling and turning centres make intricate 3D contours, precision holes at angles, and tiny features possible. Coolant flows to aid in chip removal.
3
Material Suitability
Machinable grades of metals, plastics, composites, and technical ceramics can all be precision machined to custom specifications and finishes. Exotic alloys are also possible.
4
Scalability
The same CNC machine programming applies whether producing one-off prototypes or high-volume production runs, making it versatile. Some automated pallet systems enable lights-out manufacturing.
5
Secondary Operations
Value-added post-machining activities like deburring, coating, heat treating, and passivation can further enhance machined components for functional requirements.
6
Cost Effectiveness
CNC is cheaper than casting/moulding methods for small to medium batch sizes. It eliminates hard tooling expenses with quick changeovers between jobs, offsets higher equipment costs.
Product Industries
Precision machining employs computer numerical control (CNC) equipment and advanced software to accurately shape materials by selectively removing material from a stock piece to create custom parts.
1
CAD Design
CAD Design The process starts with a digital 3D model of the part created using computer-aided design (CAD). This model includes precise dimensions, tolerances, materials, and other essential details.
2
CNC Programming
CAD model data is converted through CAM (computer-aided manufacturing) software into numeric code instructing the CNC machine tool on its movements.
3
Fixturing
In this step, the appropriate stock material is chosen and securely fixed in the CNC equipment using clamps, vices, or adhesive. Common materials used in precision machining include metals, plastics, glass, and ceramics, as they offer strength and the ability to maintain tight tolerances.
4
Tool Setup
The machinist starts the CNC program, which controls machine movements, spindle speeds, cutting tools, and feed rates. This process shapes the material using technologies like milling, turning, EDM, laser cutting, and plasma cutting.
5
Machining
In this step, the machine operates the tool based on programmed instructions to create precise, complex parts. Additional finishing, polishing, and coating processes may be applied before the final inspection to ensure the part meets the original engineering specifications for form, fit, and function.
6
Inspection
This process enables the shaping complex geometries from suitable materials through high-precision machining techniques and skilled technicians.
Quality checks use manual instruments like micrometres, callipers, and automated methods to ensure dimensional accuracy against original specifications. Adjustments can be made to meet precise tolerances.
Precision Machining tolerances
Machining tolerances are the acceptable variations in the dimensions of a machined part from its ideal specifications, ensuring proper function in its intended application. There are four main types of machining tolerances.
Unilateral Tolerances
This process enables the shaping complex geometries from suitable materials through high-precision machining techniques and skilled technicians.
Quality checks use manual instruments like micrometres, callipers, and automated methods to ensure dimensional accuracy against original specifications. Adjustments can be made to meet precise tolerances.
Unilateral Tolerances
This process enables the shaping complex geometries from suitable materials through high-precision machining techniques and skilled technicians.
Quality checks use manual instruments like micrometres, callipers, and automated methods to ensure dimensional accuracy against original specifications. Adjustments can be made to meet precise tolerances.
Unilateral Tolerances
This process enables the shaping complex geometries from suitable materials through high-precision machining techniques and skilled technicians.
Quality checks use manual instruments like micrometres, callipers, and automated methods to ensure dimensional accuracy against original specifications. Adjustments can be made to meet precise tolerances.
Unilateral Tolerances
This process enables the shaping complex geometries from suitable materials through high-precision machining techniques and skilled technicians.
Quality checks use manual instruments like micrometres, callipers, and automated methods to ensure dimensional accuracy against original specifications. Adjustments can be made to meet precise tolerances.
Major Tool Room Equipment Related
Oerlikon Jig Boring And Milling Machine
Specifications:
X - Travel 34"
Y - Travel 65"
Z - Travel 15 3/4"
Y - Travel 65"
Z - Travel 15 3/4"
Vertical Travel of Cross Rail: 35"
Max. Table Load: 6600 lb.
Positioning Accuracy: 0.0004"
Pro Lathe
Specifications:
Swing Over Bed 14”
Distance Between Centers 42
Related Services
Our expertise extends across diverse industries, with applications ranging from defence and aerospace to electrical, communications, and beyond.
EMEC's commitment to quality and precision ensures that our parts meet the stringent requirements of even the most demanding industries.
Metal Fabrication
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For specific needs and discussion
EMEC can help you optimise your manufacturing processes.