Technique to Produce Segment-Color Yarn with Ring Frame

2011 ◽  
Vol 332-334 ◽  
pp. 72-76
Author(s):  
Jun Lian ◽  
Bo Jun Xu ◽  
Chun Ping Xie
Keyword(s):  
Basic Principle ◽  
Main Parameter ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
High Quality ◽  
Ring Frame ◽  
New Type

segment-color yarn is a new type yarn. It can be spin by ring frame with computer numerical control. The basic principle of spinning segment-color yarn was developed in this paper. The main parameter of segment-color yarn were discussed. This can help produce high quality segment-color yarn.

scholarly journals Studies on the Melt Spinning Process of Square 8-hole Hollow Polyester Fibre

2018 ◽  
Vol 26 (3(129)) ◽  
pp. 14-16 ◽  
Author(s):  
Pei Feng ◽  
Pei Feng ◽  
Jun Pan ◽  
Qihua Ma ◽  
Chongchang Yang ◽  
...  
Keyword(s):  
Experimental Method ◽  
Melt Spinning ◽  
Polyester Fibre ◽  
Computer Numerical Control ◽  
Processing Method ◽  
Silver Electrode ◽  
Numerical Control ◽  
Basic Unit ◽  
Spinning Process ◽  
New Type

In this paper, the shape of the spinneret capillary was discussed, and optimized spinneret capillaries were successfully processed by a computer numerical control processing method which takes a C-shape silver electrode as the basic unit. Based on the optimised spinning process, a new type of square 8-hole hollow PET fibre was prepared by the experimental method.

Methodology for obtaining C3 continuity on tool trajectory featuring acceleration and jerk constraint on computer numerical control machine

2011 ◽  
Vol 225 (9) ◽  
pp. 2206-2215 ◽  
Author(s):  
J R Rivera-Guillen ◽  
R J Romero-Troncoso ◽  
R A Osornio-Rios ◽  
A Domínguez-González
Keyword(s):  
Feed Rate ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Cnc Machine ◽  
High Quality ◽  
Machine Performance ◽  
Tool Trajectory ◽  
Machine Speed ◽  
Quality Material ◽  
Control Machine

High-quality material manufacture requires the improvement of the computer numerical control (CNC) machine performance. Such task can be achieved by considering the tool trajectory, in which it is important to minimize the acceleration and jerk levels. Previous research works are focused on providing smooth movements at most with C2 continuous trajectories, and the results of using C3 continuity in the trajectory are not evaluated. The contribution of this study is the design of a methodology for obtaining C3 tool trajectories while acceleration and jerk levels are constrained through adaptive feed-rate. C3 and C2 trajectories are executed in a CNC machine. Speed, acceleration, and jerk are monitored in order to validate the proposed methodology and to analyse and quantify the differences between using C2 and using C3 trajectories.

scholarly journals Manufacturing a Plotter Printer with Computer Numerical Control Based Pen Ink Using CoreXY Mechanisms

2021 ◽  
Vol 5 (2) ◽  
pp. 370
Author(s):  
Veshea Falerie Goszal ◽  
Hilal Hudan Nuha ◽  
Maman Abdurohman
Keyword(s):  
Motion Control ◽  
High Precision ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Precision Measurements ◽  
Control Technique ◽  
High Quality ◽  
The Mean

In the process of printing images, a high-quality plotter printer is required to obtain better printed images. This causes the costs incurred to purchase a plotter printer become even higher along with the quality of the printout. In addition, the use of original plotter printer ink is significantly more expensive than that of the non-original ink. Therefore, this paper proposes a pen based computer plotter printer design using the CoreXY framework. This framework is based on a 2D in-axis motion control technique using a single continuous belt for both axes. To evaluate the performance of the proposed design, the level precision for vector and raster modes are measured using the Mean Absolute Percentage (MAPE). Based on the results of precision measurements, it was found that the printer prototype designed to produce high-precision images with affordable pen ink costs and can process digital instructions from a computer using Computer Numerical Control (CNC).

A Process of Glocalisation? Roman Marble Imports and the Rise of Blocked-Out Capitals in Local Stone

2020 ◽  
pp. 33-45
Author(s):  
Matthias Grawehr
Keyword(s):  
Roman Empire ◽  
Eastern Mediterranean ◽  
High Quality ◽  
White Marble ◽  
Aesthetic Preference ◽  
Local Responses ◽  
Global Trend ◽  
Short Period ◽  
New Type ◽  
Local Materials

In the Augustan Age, a new aesthetic preference was propagated in the Roman Empire – the surface of white marble was valued as it symbolised the strength and superiority of the ‘new age’. Soon, an immense trade in high quality marble over land and sea developed to meet the emergent demand. While the development and scale of this trade is well studied, the repercussions that the new aesthetic preference had on the local architectural traditions in areas where no marble was close at hand is not commonly considered. In this contribution, two developments are traced, taking the Corinthian capital as the leitmotif. First, in the short period between c. 40 and 10 BC, patrons would choose imitation of marble in plaster to meet up with the demands of the new standard and to demonstrate their adherence to the Empire. In the second line of development, a different path was taken – a conscious use of local materials which went hand in hand with the development of a new type of capital, the so-called ‘Nabataean blocked-out’ capital. This combination turned into a new vernacular tradition across large parts of the eastern Mediterranean. Both developments were local responses to a new ‘global’ trend and can therefore be viewed as a phenomenon of glocalisation in the Roman Period.

Computer numerical control of electron beam machining equipments

1977 ◽  
Vol 10 (16) ◽  
pp. 655-662
Author(s):  
A. Schuler ◽  
W. Oberreiter ◽  
H. Hoffmann
Keyword(s):  
Electron Beam ◽  
Computer Numerical Control ◽  
Numerical Control

FPGA-Based Intelligent Software Hardening Chip for Computer Numerical Control System

2011 ◽  
Vol 105-107 ◽  
pp. 2217-2220
Author(s):  
Mu Lan Wang ◽  
Jian Min Zuo ◽  
Kun Liu ◽  
Xing Hua Zhu
Keyword(s):  
High Speed ◽  
High Performance ◽  
Large Scale ◽  
Position Control ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Cnc System ◽  
Intelligent Software

In order to meet the development demands for high-speed and high-precision of Computer Numerical Control (CNC) machine tools, the equipped CNC systems begin to employ the technical route of software hardening. Making full use of the advanced performance of Large Scale Integrated Circuits (LSIC), this paper puts forward using Field Programmable Gates Array (FPGA) for the functional modules of CNC system, which is called Intelligent Software Hardening Chip (ISHC). The CNC system architecture with high performance is constructed based on the open system thought and ISHCs. The corresponding programs can be designed with Very high speed integrate circuit Hardware Description Language (VHDL) and downloaded into the FPGA. These hardening modules, including the arithmetic module, contour interpolation module, position control module and so on, demonstrate that the proposed schemes are reasonable and feasibility.

Sign in / Sign up

Export Citation Format

Share Document