scholarly journals Study on compensation mechanisms for thermal deformations of machine tools by means of added piezo-electric element. Prediction of relative displacement by gradient of temperature.

1990 ◽  
Vol 56 (4) ◽  
pp. 673-678 ◽  
Author(s):  
Gonojo Katayama ◽  
Kenji Mizuochi ◽  
Toshihide Inoue ◽  
Churo Teratani
Keyword(s):  
Machine Tools ◽  
Relative Displacement ◽  
Thermal Deformations ◽  
Compensation Mechanisms ◽  
Piezo Electric

scholarly journals Study on the Thermal Deformations of Machine Tools (2nd Report)

1972 ◽  
Vol 38 (450) ◽  
pp. 565-571 ◽  
Author(s):  
Keiji OKUSHIMA ◽  
Yoshiaki KAKINO ◽  
Toshihiko KIKUCHI
Keyword(s):  
Machine Tools ◽  
Thermal Deformations

818 Thermal Deformations in Cutting area of Machine tool in Frequency domain : Applied to the machine model and machine tools

2010 ◽  
Vol 2010.48 (0) ◽  
pp. 257-258
Author(s):  
Kazuya JYOGUTI ◽  
Masao FUKUKI ◽  
Hiromasa MAKIHARA ◽  
Fumihiro SUZUMURA ◽  
Gonojo KATAYAMA
Keyword(s):  
Machine Tool ◽  
Frequency Domain ◽  
Machine Tools ◽  
Machine Model ◽  
Thermal Deformations

scholarly journals Study on the Thermal Deformations of Machine Tools (3rd Report)

1973 ◽  
Vol 39 (457) ◽  
pp. 230-236
Author(s):  
Keiji OKUSHIMA ◽  
Yoshiaki KAKINO ◽  
Toshihiko KIKUCHI
Keyword(s):  
Machine Tools ◽  
Thermal Deformations

Vibration Control of Relative Tool-Spindle Displacement for CNC Lathe With Pipe Frame Structure

2012 ◽  
Author(s):  
Yoshitaka Morimoto ◽  
Naohiko Suzuki ◽  
Yoshiyuki Kaneko ◽  
Minoru Isobe
Keyword(s):  
Machine Tool ◽  
Vibration Control ◽  
Machine Tools ◽  
Active Vibration Control ◽  
Relative Displacement ◽  
Frame Structure ◽  
Truss Structures ◽  
Welded Steel ◽  
Space Problem ◽  
Cnc Lathe

A new CNC lathe with a pipe frame bed has been developed. One requested improvement for machine tools is their downsizing by minimizing the number of mechanical parts. Some researchers aim to construct a desktop factory. This trend has been attracting a lot of attention lately in the industrial field. When a machine tool bed is designed using castings and/or welded steel plate structures to comply with this request, it is difficult to ensure space for chip evacuation because of the space limitations of solid body components. This led us to develop another type of structure for machine tools. A pipe frame bed has the ability to solve this problem. As represented by bridge trusses and flexible space structures, truss structures are traditional and fundamental in their design. This structure is expected to have enough space between the truss bars to solve the space problem. However, rigidity is the most significant issue for machine tools. Therefore, the desired rigidity is ensured by the use of diagonal braces. Based on this design concept, a CNC lathe whose frame consists of pipes, joints, and diagonal braces has been developed with enough rigidity and space utility for chip evacuation. From the viewpoint of machine tool usage, the rigidity and stable dynamic characteristics of the structure must be obtained. Then, real-time vibration control theory is applied to the relative displacement between the tool post and the spindle. Active vibration control is used to suppress specific relative vibration modes. In this paper, the effects of vibration control are evaluated by comparing the relative vibratory motion between the tool post and the spindle. Over 50% suppression has been achieved by applying vibration control to the target vibration mode. Additionally, using this control, the machined profile has been improved, and the roundness and harmonic analysis of the workpiece showed over 30% improvement.

scholarly journals Study on Thermal Deformations of Machine Tools (4th Report)

1974 ◽  
Vol 40 (479) ◽  
pp. 1105-1110 ◽  
Author(s):  
Yoshiaki KAKINO ◽  
Keiji OKUSHIMA
Keyword(s):  
Machine Tools ◽  
Thermal Deformations
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