State Of The Art Cnc Machines
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MFE 3107
CNC MACHINES – STATE OF THE
Lisa Asciak 356495M
INTRODUCTION TO NC & CNC
Readily Available CNC Technologies
Lisa Asciak 356495M
CNC vs. CONVENTIONAL MACHINING Reduction in set-up time. Reduction in lead-time. Better accuracy and repeatability. Machining of complex parts. Constant cycle time.
Lisa Asciak 356495M
3 MAIN COMPONENTS OF A CNC
The Man Machine Interface (MMI) The Numerical Control Kernel (NCK) The Program Logic Controller (PLC)
Lisa Asciak 356495M
CNC PART PROGRAMMING Based on the same standard developed with the early NC’s. Composed of G&M code programs; low level codes to describe tool motion and switching instructions.
Lisa Asciak 356495M
CNC OPERATION FLOW Offline Tasks Online Tasks Post-line Tasks
Lisa Asciak 356495M
CNC SOFTWARE EVOLUTION
A new interface language was developed: STEP-NC This new language differs from G&M codes since it is not machine-specific and it gives the machine much more information on the part being machined since it contains information on both the part geometry and the process plan.
Daniel Aquilina 38295G
TECHNOLOGIES CURRENTLY IN USE Prominent Technologies Currently used in Industry
Daniel Aquilina 38295G
FANUC - FUJI AUTOMATIC NUMERICAL CONTROL Leading global company with over 55 years of experience. Large portion of CNC market share; 65% State of the art Controller – FANUC Series 30i-Model B Controls
Industrial Applications
FANUC
Daniel Aquilina 38295G
FANUC - FUJI AUTOMATIC NUMERICAL CONTROL Features interpolation functions. Accuracy Compensation Functions. Feed Functions. DCS Functions.
Daniel Aquilina 38295G
CNC Wire Electric Discharge Machining
Automatic Wire Threading. Twin Servo control. AI Pulse Control.
Daniel Aquilina 38295G
CNC FILAMENT WINDERS
Faster and higher accuracy. More Complicated Patterns and shapes. Cadfill Software: Used in parallel with CNC software.
Jeanelle Arpa 374195M
TECHNOLOGIES UNDERGOING STUDY Prominent Innovative Findings for CNC Machines
Jeanelle Arpa 374195M
MULTI-AXES CNC MACHINES The Problem with
MULTI-AXES
A cause for concern with multiple axes CNC is control error, which increases for each additional axes of motion introduced. This ultimately leads to lack of precision during operation. Due to its criticality, a great body of research has been conducted to tackle collision avoidance and detection problems, and a number of methods have been developed.
Jeanelle Arpa 374195M
INTELLIGENT CNC MACHINES Mounted cameras on the machine to provide data image. Intelligence implemented through feedback controllers. Intelligence implemented through Support Vector Images (SVI).
On-Line Vision
Jeanelle Arpa 374195M
CROSS-TECHNOLOGY INTEROPERABILITY Refinement of higher level process information from NC programs. A programming system is implement to recognize CAD file data. From the recognized features the program generates a process plan and completes a STEP-NC file to enable a STEP-compliant chain solution.
On-Line Vision
Jeanelle Arpa 374195M
HYBRID CNC MACHINES Combining additive manufacturing with CNC machining to reduce time, cost and NC programming effort. Combining CNC machining with laser cutting to provide a process with very low tool wear and high product precision. Ultrasonic machining is also employed in conjunction with CNC drilling to reduce drilling torque.
Jeanelle Arpa 374195M
Machining Special Surfaces The Problem with
SPECIAL SURFACES
FREEFORM SURFACES: Investigations place their focus on the three major aspects of freeform machining, these being tool geometry, tool path generation, and tool orientation recognition. ENVELOPING SURFACES: Improvements are motivated by problems such as tool paths that fail to take into consideration the characteristics of an enveloping surface in reference. SWEPT SURFACES: Proposed methods offer heightened efficiency and accuracy when compared to traditional approaches that rely on pre-processing steps with piece-wise circular and linear tool path approximations.
MFE 3107
CNC MACHINES – STATE OF THE ART THANK YOU FOR YOUR ATTENTION
CNC MACHINES – STATE OF THE
Lisa Asciak 356495M
INTRODUCTION TO NC & CNC
Readily Available CNC Technologies
Lisa Asciak 356495M
CNC vs. CONVENTIONAL MACHINING Reduction in set-up time. Reduction in lead-time. Better accuracy and repeatability. Machining of complex parts. Constant cycle time.
Lisa Asciak 356495M
3 MAIN COMPONENTS OF A CNC
The Man Machine Interface (MMI) The Numerical Control Kernel (NCK) The Program Logic Controller (PLC)
Lisa Asciak 356495M
CNC PART PROGRAMMING Based on the same standard developed with the early NC’s. Composed of G&M code programs; low level codes to describe tool motion and switching instructions.
Lisa Asciak 356495M
CNC OPERATION FLOW Offline Tasks Online Tasks Post-line Tasks
Lisa Asciak 356495M
CNC SOFTWARE EVOLUTION
A new interface language was developed: STEP-NC This new language differs from G&M codes since it is not machine-specific and it gives the machine much more information on the part being machined since it contains information on both the part geometry and the process plan.
Daniel Aquilina 38295G
TECHNOLOGIES CURRENTLY IN USE Prominent Technologies Currently used in Industry
Daniel Aquilina 38295G
FANUC - FUJI AUTOMATIC NUMERICAL CONTROL Leading global company with over 55 years of experience. Large portion of CNC market share; 65% State of the art Controller – FANUC Series 30i-Model B Controls
Industrial Applications
FANUC
Daniel Aquilina 38295G
FANUC - FUJI AUTOMATIC NUMERICAL CONTROL Features interpolation functions. Accuracy Compensation Functions. Feed Functions. DCS Functions.
Daniel Aquilina 38295G
CNC Wire Electric Discharge Machining
Automatic Wire Threading. Twin Servo control. AI Pulse Control.
Daniel Aquilina 38295G
CNC FILAMENT WINDERS
Faster and higher accuracy. More Complicated Patterns and shapes. Cadfill Software: Used in parallel with CNC software.
Jeanelle Arpa 374195M
TECHNOLOGIES UNDERGOING STUDY Prominent Innovative Findings for CNC Machines
Jeanelle Arpa 374195M
MULTI-AXES CNC MACHINES The Problem with
MULTI-AXES
A cause for concern with multiple axes CNC is control error, which increases for each additional axes of motion introduced. This ultimately leads to lack of precision during operation. Due to its criticality, a great body of research has been conducted to tackle collision avoidance and detection problems, and a number of methods have been developed.
Jeanelle Arpa 374195M
INTELLIGENT CNC MACHINES Mounted cameras on the machine to provide data image. Intelligence implemented through feedback controllers. Intelligence implemented through Support Vector Images (SVI).
On-Line Vision
Jeanelle Arpa 374195M
CROSS-TECHNOLOGY INTEROPERABILITY Refinement of higher level process information from NC programs. A programming system is implement to recognize CAD file data. From the recognized features the program generates a process plan and completes a STEP-NC file to enable a STEP-compliant chain solution.
On-Line Vision
Jeanelle Arpa 374195M
HYBRID CNC MACHINES Combining additive manufacturing with CNC machining to reduce time, cost and NC programming effort. Combining CNC machining with laser cutting to provide a process with very low tool wear and high product precision. Ultrasonic machining is also employed in conjunction with CNC drilling to reduce drilling torque.
Jeanelle Arpa 374195M
Machining Special Surfaces The Problem with
SPECIAL SURFACES
FREEFORM SURFACES: Investigations place their focus on the three major aspects of freeform machining, these being tool geometry, tool path generation, and tool orientation recognition. ENVELOPING SURFACES: Improvements are motivated by problems such as tool paths that fail to take into consideration the characteristics of an enveloping surface in reference. SWEPT SURFACES: Proposed methods offer heightened efficiency and accuracy when compared to traditional approaches that rely on pre-processing steps with piece-wise circular and linear tool path approximations.
MFE 3107
CNC MACHINES – STATE OF THE ART THANK YOU FOR YOUR ATTENTION
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