Tool positioning method for achieving double-point contact in flank milling of a concave surface with a barrel cutter

2017 ◽  
Vol 93 (5-8) ◽  
pp. 1791-1807 ◽  
Author(s):  
Zhu Yu ◽  
Chen Zhi-Tong ◽  
Zhang Yun ◽  
Ning Tao
Keyword(s):  
Double Point ◽  
Point Contact ◽  
Concave Surface ◽  
Flank Milling ◽  
Tool Positioning ◽  
Positioning Method

Five-Axis Flank Milling of Sculptured Surface with Barrel Cutters

2009 ◽  
Vol 407-408 ◽  
pp. 292-297
Author(s):  
Dan Wang ◽  
Wu Yi Chen ◽  
Tian Li ◽  
Ru Feng Xu
Keyword(s):  
Flank Milling ◽  
Interference Avoidance ◽  
Envelope Curve ◽  
Tool Positioning ◽  
Machining Errors ◽  
Positioning Method ◽  
Local Interference ◽  
Procedure Error ◽  
Tool Position ◽  
Five Axis

A flank milling tool positioning method using a barrel cutter is proposed. An offset point is used as the first anchor point. Two rotary angles of the barrel cutter are adjusted to find the optimized tool position with the largest machining strip width. The result tool position calculated using the proposed method is gouge-free because the local interference avoidance method is integrated inside the tool positioning procedure. Error distribution beneath the barrel cutter is well estimated by virtual of the instant envelope curve of the cutter. The envelope curve is discretized into points. The distances between these points and the model surface are the machining errors beneath the cutter. The employment of the envelope curve also largely reduces the computational load of the algorithm. Finally, numerical implementation and simulation are performed to validate the feasibility of the method.

A stable superconducting double point-contact magnetometer in which the voltage sensitivity is improved by filling the hole with copper

Physica ◽  
1972 ◽  
Vol 59 (1) ◽  
pp. 155-160 ◽  
Author(s):  
A.Th.A.M. de Waele ◽  
C.P.M. Vergouwen ◽  
A.A.J. Matsinger ◽  
R. de Bruyn Ouboter
Keyword(s):  
Double Point ◽  
Point Contact ◽  
Voltage Sensitivity

An efficient multipoint 5-axis tool positioning method for tensor product surfaces

2018 ◽  
Vol 97 (1-4) ◽  
pp. 279-295 ◽  
Author(s):  
Ravinder Kumar Duvedi ◽  
Sanjeev Bedi ◽  
Stephen Mann
Keyword(s):  
Tensor Product ◽  
Tool Positioning ◽  
Positioning Method

Phase-locking in double-point-contact spin-transfer devices

Nature ◽  
2005 ◽  
Vol 437 (7057) ◽  
pp. 393-395 ◽  
Author(s):  
F. B. Mancoff ◽  
N. D. Rizzo ◽  
B. N. Engel ◽  
S. Tehrani
Keyword(s):  
Double Point ◽  
Phase Locking ◽  
Point Contact ◽  
Spin Transfer

scholarly journals Double Point Contact in Quantum Hall Line Junctions

2003 ◽  
Vol 91 (15) ◽  
Author(s):  
Eun-Ah Kim ◽  
Eduardo Fradkin
Keyword(s):  
Double Point ◽  
Quantum Hall ◽  
Point Contact

scholarly journals Cutting force and machine kinematics constrained cutter location planning for five-axis flank milling of ruled surfaces

2017 ◽  
Vol 4 (3) ◽  
pp. 203-217 ◽  
Author(s):  
Ke Xu ◽  
Jiarui Wang ◽  
Chih-Hsing Chu ◽  
Kai Tang
Keyword(s):  
Cutting Force ◽  
Surface Quality ◽  
Feed Rate ◽  
Tool Path ◽  
Flank Milling ◽  
Machining Efficiency ◽  
Location Planning ◽  
Tool Positioning ◽  
Finished Surface ◽  
Five Axis

Abstract Five-axis flank milling has been commonly used in the manufacturing of complex workpieces because of its greater productivity than that of three-axis or five-axis end milling. The advantage of this milling operation largely depends on effective cutter location planning. The finished surface sometimes suffers from large geometrical errors induced by improper tool positioning, due to the non-developability of most ruled surfaces in industrial applications. In addition, a slender flank-milling cutter may be deflected when subjected to large cutting forces during the machining process, further degrading the surface quality or even breaking the cutter. This paper proposes a novel tool path planning scheme to address those problems. A simple but effective algorithm is developed to adaptively allocate a series of cutter locations over the design surface with each one being confined within an angular rotation range. The allocation result satisfies a given constraint of geometrical errors on the finished surface, which consists of the tool positioning errors at each cutter location and the sweeping errors between consecutive ones. In addition, a feed rate scheduling algorithm is proposed to maximize the machining efficiency subject to the cutting force constraint and the kinematical constraints of a specific machine configuration. Simulation and experimental tests are conducted to validate the effectiveness of the proposed algorithms. Both the machining efficiency and finish surface quality are greatly improved compared with conventional cutter locations. Highlights Tool position is bounded with respect to the geometrical machining error. Cutting force and kinematics during five-axis flank milling process are analyzed. An incremental adaptive flank milling tool path generation algorithm is proposed. Feed rate is smoothly assigned respecting cutting force and kinematic constraints.

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