24 Result(s)
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Article
The dynamic instability analysis of electrodynamic tether system
The libration motion of conductive tether in the electrodynamic tether system has been demonstrated to be inherently unstable. However, the relationship between the instability of libration motion and the teth...
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Article
Forming quality optimization of 2219 aluminum alloy thin-walled complex components based on fracture constraint in spin forming
The 2219 aluminum alloy thin-walled complex components manufactured by spin forming are frequently applied to the bottom end of rocket fuel tanks. However, fracture and quality problems (large part-mold contac...
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Article
A novel interpolator designed for laser scanning welding of hairpin windings in electric vehicle motors
Electric vehicles are recently prosperous due to decarbonization and electrification in transportation. However, manufacturing their motor windings with stable high quality is challenging, especially in hairpi...
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Article
On-the-fly laser processing method with high efficiency for continuous large-scale trajectories
Laser processing with galvanometric scanners and servo platforms has been prosperous in the industry recently, and researches in this field have been evolved from step-and-scan methods to on-the-fly methods. H...
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Article
The fabrication of microlens array in PMMA material with the assistant of nickel pillars by LIGA technology and thermal reflow method
Through the combination of the LIGA technology and the thermal reflow method, the contact angles of the microlens array increase a lot with the assistance of the nickel pillars. The nickel pillar with rough su...
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Article
The posture optimization method based on deformation index in robotic milling process
Compared with traditional CNC machine tools, industrial robots have higher flexibility and lower cost in the machining field. However, the relatively low stiffness of the robot makes it difficult to meet the a...
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Article
Calculation and analysis of quasi-dynamic cutting force and specific cutting energy in micro-milling Ti6Al4V
Micro-milling force and specific cutting energy play an important role in revealing the micro-milling mechanism. However, it is quite difficult to compare the micro-milling force values from different experime...
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Article
Forming dependence on spin roller paths for thin-walled complex components from 2195 Al-Li alloy TWBs
The spin forming provides an approach to manufacturing large-diameter thin-walled complex curved surface components based on tailor-welded blanks produced from small 2195 Al-Li alloy plates, even scraps by fri...
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Article
Rib filling behavior in flow forming of thin-walled tube with helical grid-stiffened ribs
Flow forming is a promising metal forming technology to manufacture thin-walled tube with helical grid-stiffened ribs (TTHGRs). High quality of grid-stiffened ribs is the primary concern in this forming techno...
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Article
Online chatter detection in robotic machining based on adaptive variational mode decomposition
Chatter is the main problem that limits the application of industrial robots in the field of machining process. It is critically important to establish an adaptive chatter detection solution for robot machinin...
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Article
A NURBS curve interpolator with small feedrate fluctuation based on arc length prediction and correction
Non-uniform rational B-spline (NURBS) curve has been widely used in manufacturing systems. A good interpolator can help the system to improve the contour accuracy and get smooth dynamics performance, but it is...
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Article
A novel time-rounding-up-based feedrate scheduling method based on S-shaped ACC/DEC algorithm
The round-off error, which is caused by cycle sampling of the interpolation period, affects the interpolation accuracy and motion smoothness of computer numerical control (CNC) machining. To consider the round...
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Article
An intelligent CNC controller using cloud knowledge base
CNC machine tool plays a vital role in intelligent manufacturing, but up to now, CNC controller, which works as the “brain” of the machine tool, is just a loyal executor of machining command without intelligen...
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Article
An optimized feedrate scheduling method for CNC machining with round-off error compensation
Feedrate scheduling is one of the most important factors of computer numerical control (CNC) machining and has become a crucial research problem. In order to improve the machining accuracy and motion smoothnes...
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Article
A STEP-based machining data model for autonomous process generation of intelligent CNC controller
As the key component of intelligent CNC machine tool, CNC controller is expected to provide various intelligent functions, among which, autonomous process planning is one of the most important functions. Howev...
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Article
Design and development of a CNC machining process knowledge base using cloud technology
Nowadays, computer numerical control (CNC) machine tool undertakes more processing tasks than other common machine tools because of its highly automated machining ability and high performance. However, due to ...
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Article
A modified constraint force algorithm for flexible multibody dynamics with loop constraints
This paper presents a modified constraint force algorithm (m-CFA) for the dynamics of flexible multibody systems in arbitrary topologies. The m-CFA can efficiently calculate the constraint forces while solving...
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Article
Comprehensive evaluation of welding quality for butt-welded by means of CO2 arc vibratory welding
In order to improve the mechanical properties of welding, the welding quality of butt-welded by the application of CO2 arc vibratory welding was evaluated by tensile strength, fatigue life, microhardness, deforma...
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Article
Research and development of industrial real-time Ethernet performance testing system used for CNC system
Nowadays, the using of real-time Ethernet (RTE) in CNC system becomes a main trend because of its low cost and high performance. In order to guarantee the performance of CNC systems which use RTE, the characte...
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Article
A CNC system based on real-time Ethernet and Windows NT
Modern manufacturing industry requires computer numerical control (CNC) systems to be more open, extendable, and networked. Real-time Ethernet is introduced and its use in CNC is discussed in this paper. Compa...
