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2005 JSPE Autumn Meeting
Displaying 1-50 of 638 articles from this issue
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  • Development of Machining Center VD300 for Micro-Precision Die and Mold
    Seido Kohda, Shigeki Sugio, Kazunori Masamoto, Mikito Kumagai
    Session ID: A06
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.7.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Characteristics of machine tools, for example spindle run–out, thermal growth of spindle, lost–motion of feed drive, has become important problem to improve the machining accuracies for micro–precision die and mold. In order to solve such problems, new high accuracy machining–center has been developed to improve them. In this paper, we discussed the effectiveness of characteristic parameters on machining accuracies and confirmed that machining accuracies can be improved.
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  • Development of a high precision machining center
    Isao Ohshita, Hisashi Otsubo
    Session ID: A07
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.9.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The birth of a machining center goes back about half a century ago. Since then, the machining center has made great progress with the development of technology. During that period, the motion accuracy of the high precision machining center has been evaluated. However, especially the high accuracy, such as the optical related parts, the medical related parts and the die and mold, has been called for recently. New high precision machining center, whose characters are the hydraulic guide and the linear motor, has been developed for those demands. This essay describes the measurement of motion accuracy and the result of measurement, such as the straightness of linear axes, 10nm step motion, the circular motion test and the circular motion error.
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  • A Cutting Characteristic of High Precision Machining Center ″Zμ3500″
    Akira Tanizaki, Akira Takase, Siro Murai
    Session ID: A08
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.11.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    In this document, we present the features outline and usage example of Zμ3500 machine, that eliminates the metal–to–metal contact(bearing elements)of traditional machinery employing hydrostatic guides with linear motor drive and hydrostatic/hydrodynamic hybrid bearing spindles.
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  • Development of a High-speed and High-precision Parallel Mechanism Machine Tool
    Tomoharu Ando, Tetsuya Matsushita
    Session ID: A09
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.13.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Generally the control parameters for parallel mechanism machine tool are adjusted under the lowest machine rigidity because it varies with each position and posture of the spindle. However, it is possible to obtain higher speed and precise positioning by using the optimal control parameters at a higher machine rigidity. We have developed the function to optimize the control parameters with the position and posture of the spindle accordingly, therefore, higher speed and accuracy could be achieved.
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  • A Study on Tool Trajectory Generation for High Speed Cutting by Parallel Kinematic Machine Tool
    Keiichi Nakamoto, Haruki Mori, Toshimichi Moriwaki
    Session ID: A10
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.15.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    High speed ball–end milling is expected to realize efficient and productive machining of sculptured surfaces. Parallel kinematic machine tools, which have multiple degree of freedom and high speed feed capability, have the feasibility of high speed cutting than conventional serial mechanism machine tools. However, they cannot simply achieve high speed cutting because they have relatively complex structures. Furthermore, current CAM systems, which can generate tool paths without collision, don′t consider the smoothness of the cutting motion based on the specific structure of each machine tool. In this paper, a strut motion is simulated while cutting on a parallel kinematic machine tool, in order to establish a methodology to evaluate the generated tool trajectories. It is experimentally verified that a proposed method based on the strut motion simulator is sufficiently effective.
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  • A study on a design evaluation method considering structural deformation
    Nozomu Mishima
    Session ID: A14
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.17.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The author has been studying about a new design evaluation method of machine tools utilizing robust design and form–shaping theory. In the series of study, it was proved that the design evaluation method could show the effects of machine tool structure, dimensions and error sources on the machine performance. In this report, the method was modified to handle not only component errors, but also structural deformation of machine tools. Using the modified method, a procedure to support conceptual design of machine tools by optimizing the dimensional proportion is shown. Finally, the paper concludes that the proposed design evaluation method is effective to suggest design strategies including proper shape of machine.
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  • Development of an Ultraprecision Mother Machine
    Yoshiyuki Yamaguchi, Yuichi Kosaka, Takamichi Katou, Osamu Horiuchi, Y ...
    Session ID: A15
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.19.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper describes design of a high precision water level gauge and its capability of straightness measurement of large objects. The level gauge is composed of a container of water and a float. The float has an optical linear scale to measure vertical position of the float or the water level with a resolution of 0.1 micron. Aerostatic bearings support the float vertically and enable its frictionless displacement. In the measurement, more than three level gauges are set on the object and their containers are connected to each other with tubes so that the relative heights can be measured. Then the straightness can be obtained from the relative heights among each level gauges. It was found by experiments that this method had an accuracy of better than 1 micron and was suitable for straightness measurement of large objects.
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  • Treatment of Contact Stiffness of Joint in FEM Analysis (2nd report)
    Shinji Shimizu, Toshikazu Shiroishi, Haruhisa Sakamoto
    Session ID: A16
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.21.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We proposed the method how to introduce the contact stiffness of the joint interface into the FEM analysis. In this research, we propose the more advanced method in which the contact stiffness is obtained by differentiating the contact force with respect to the approach distance of contact surfaces. From the analytical result using this method, we conclude as follows. The proposed method can be appropriate, since the analytical result agree well with the experimental results and the behavior of the joints obtained from the analysis explains well the behavior of the bending displacement of the cantilever in experiment.
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  • Basic Study of Application of ERG on One-sided Pattern Electrodes to Micro Alignment and Fixture Devices
    Yasuhiro Kakinuma, Tojiro Aoyama, Hidenobu Anzai
    Session ID: A17
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.23.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Electro–rheological gel is a functional material whose induced shear force is changed according to the applied electric field intensity. In resent study, the one–sided electrodes are proposed in order to simplify the structure of the wiring. It is clear that the ER effect of ERG on one–sided electrodes can be obtained. Using the ERG on one–sided patterned electrodes, the functional surface which can change its friction characteristic under the electric field was developed in this study. To investigate the performance of the developed surface, shear test was carried out. The results show that, using not only metal but also an insulating material as a sliding object on ERG surface, the surface friction was changed in response to electric field. Moreover, the micro contraction on the surface was observed. Based on these performances, a new fixture device with micro position adjustment for micro machining was proposed.
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  • On the Measurement of Spindle Stiffness of Machine Tools
    Motoyuki Sugihara, Atsushi Matsubara
    Session ID: A19
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.25.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Conventionally, the stiffness of a machine tool is in most cases measured by static load tests. In this research, we install displacement sensors near a front bearing for a spindle in order to measure the stiffness of a spindle during cutting processes. By measuring the radial displacement of the spindle caused by cutting force by using those sensors, and comparing with the cutting force measured by using a dynamometer, the dynamic stiffness of a spindle can be estimated.
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  • a Measuring Method for Spindle Runout-Error using Magneto-Resistance Device
    Masumi Izumi, Akio Ochi
    Session ID: A20
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.27.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    A newly measuring instrument for spindle Runout–Error is presented in this report. This instrument consists of magneto–resistance device, a ridge–circuit and an amplifier. This measuring method is non–contact type. The magneto–resistance device is very sensitive; it is able to detect a magnetism object accurately. The sensitivity of the direction in a parallel to the sensor is better than the vertical direction. According to the experimental results, this newly instrument can measure the rotation accuracy of the spindle easily and inexpensively. And the resolution of the instrument is approximately 0.05µm.
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  • Evaluation Method of Machine Tool Thermal Deviation with Patterned Spindle Speed Test
    Shinji Shimizu, Shinsuke Yagyu
    Session ID: A21
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.29.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Authors have proposed the evaluation method that identifies the characteristics parameters of machine tool thermal deviation with patterned spindle speed test. This method is efficient, since the transient behaviors of thermal deviations with any spindle speed are also evaluated at one test. However, there is a possibility not to be able to evaluate properly the characteristics changing with spindle speed. Therefore, new method is proposed, that can evaluate the thermal deviation characteristics of the machine tools peculiar to each spindle speed range, and its validity is shown.
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  • Thermal Deformation-Minimized High Speed Spindle System for Nano-Machining
    Sihar Marpaung, Mayu Okubo, Hayato Yoshioka, Hitoshi Hashizume, Hideno ...
    Session ID: A22
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.31.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Higher speed, higher rotational accuracy and thermal deformation–minimized structure are required for ultraprecision spindle system. In this study, an aerostatic spindle system with compact structure was newly developed to satisfy these requirements. The developed spindle system was constructed from a spindle made of ceramics, aerostatic bearings and air turbine for driving spindle. Consequently, the spindle is supported and driven in a perfect noncontact condition. Furthermore, it was confirmed to have necessary performances by evaluating the rotational accuracy, the bearing characteristics and the thermal behavior.
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  • Development of high speed machine tool spindle using active magnetic bearings and application to high speed milling
    Tohru Nakagawa, Isao Tashiro, Yutaka Kado, Teruo Maruyama
    Session ID: A23
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.33.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Precise exterior molds for cellular phones are usually processed by small diameter endmills. Processing time by them with diameter of less than 2 mm occupies more than 90 % machining time. In order to decrease the processing time and obtain smoothness of the surface, we have developed a machine tool spindle using active magnetic bearings, which has maximum rotational speed of 80,000 rpm. In this paper, we introduce one of new suppressing methods for spindle vibration on processing and automatic tool changing methods for magnetic bearings. Applying them to the mold processing, we verified the availability of the designed machine tool spindle.
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  • A developed perfect noncontact type XY table system for ultrafine machining process
    Kouichi Taniguchi, Hayato Yoshioka, Hitoshi Hashizume, Hidenori Shinnn ...
    Session ID: A36
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.43.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    In order to realize the ultrafine machining process in future manufacturing environment, it is necessary to eliminate the error factor in machining system as much as possible. In this study, a nanometer positioning X–Y table system in a perfect noncontact support and drive condition was newly developed. Basic characteristics of the table system were evaluated and then some ultrafine machining experiments were carried out. Consequently, the usefulness of the table system was confirmed from the results of the performance evaluation.
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  • Robust Contour Tracking Control for Multi-Axis Feed Drive Systems
    Naoki Uchiyama, Shigenori Sano, Shoji Takagi, Kazuo Yamazaki
    Session ID: A37
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.45.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We present a new approach for contour tracking control of multi–axis feed drive systems. The approach is based on a complete coordinate transformation by which the contour error can be reduced independent of the error along the desired trajectory. The approach allows us to design robust control systems with respect to modeling errors of the feed drive dynamics and disturbance such as friction. Experimental results demonstrate the effectiveness of the proposed approach.
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  • Self-calibration of a Cross Grid Encoder
    Wataru Goto, Soichi Ibaraki, Atsushi Matsubara, Tamaki Ochi, Minoru Ha ...
    Session ID: A38
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.47.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    There is no standard or methodology established in today′s industries to measure two–dimensional motion errors, such as the straightness error or the squareness error, of high–precision and ultra–precision machine tools. The cross grid encoder is a laser interferometer that can measure two–dimensional position of a optical head by using a grid plate where grids are aligned orthogonal to each other. To a goal to establish a measurement methodology of two–dimensional motion accuracy of high–precision and ultra–precision machine tools by using the cross grid encoder, this paper presents a self–calibration scheme of a measurement error of the cross grid encoder caused mainly by the misalignement of grids. The measurement error corresponding to the location on the grid plate is calibrated by comparing three measurements taken with different orientation of the grid plate. It is experimentally validated that the measurement error of the cross grid encoder is reduced by about 80% by applying the self–calibration and the compensation of measurement errors.
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  • Controller Design for Improving Synchronous Accuracy of 5-axis Machining Centers
    Yutaka Ide, Ryuta Sato, Masaomi Tsutsumi
    Session ID: A42
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.49.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper proposes a controller tuning method for 5–axis machining centers which can improve synchronous accuracy. Velocity loop controllers are tuned based on the partial model matching method, and the positional loop gain is calculated based on the frequency response of the velocity control system. Feed drive systems including rotary axis were modeled and multi–axis synchronous motions were simulated. As the results from the simulations, it is clarified that the proposed tuning method can greatly improve the synchronous accuracy.
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  • Effectiveness of Clause K6 of ISO 10791-6 and Its Application to Measurement of Geometric Accuracy of 5-axis Machining Centres
    Akinori Saito, Dassanayake Muditha, Masaomi Tsutsumi
    Session ID: A43
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.51.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This research work was conducted to confirm the effectiveness of the checking method specified by ISO10791–6 and to propose an additional method for identifying the geometric deviations inherent to five–axis machining centers with a universal spindle head. In the simulation, it was assumed that a ball bar system was used for the measurement of trajectory, which was described by the spherical interpolation movement specified in the clause K6 of the standard. The influence on the trajectories of peculiar ten deviations to five–axis machining centers was investigated. However, two of the ten deviations were only extracted, although an observation equation was applied to the identification. Then, an alternative spherical movement based on the clause K6 of the ISO standard was designed. The observation equation was applied to the measured trajectory, and four deviations were identified. Furthermore, four rests of ten deviations were identified by analyzing the eometrical relations.
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  • Development of tool path generator system based on NC geometric simulation
    Mikio Fujio, Isami Yasuda, Yasunobu Katsumata
    Session ID: A44
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.53.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The NC geometrical simulator is widely used to reduce machining time since it can verify shapes after machining and the tool path without actual machining processes. The purpose of this study is the development of CAM system which is able to detect and prevent rapid fluctuation of cutting load. In this research, two algorithms that enable to keep constant removal volume are proposed. One of the algorithms is to control feed rate, and the other is to control tool position according to the removal volume per interpolation time. This paper refers to the result of actual machining by using feed control method.
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  • Basic Study on Identification of Machining Errors Based on Measurement of Machined Shape
    Yusuke Hosomi, Hideki Aoyama
    Session ID: A45
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.55.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The DBB (Double Ball Bar) method can analyze motion errors of a machine tool in the un–loaded condition. However, the method can not apply for the loaded conditions. Other researches on machining error analysis proposed so far can get precise results in estimation, but the use of them is extremely limited to a certain condition. In order to realize high accuracy machining, it is necessary to identify the factors of machining errors in the loaded conditions and exclude the error from a machined part. The objective of this study is to develop a system to analyze and identify the error factors of machining by comparing the measurement data of a machined part with the CAD data. The usefulness of the developed system was verified through tests
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  • Feedback Control Grinding of Fine Ceramics Using Machining Center
    Noriko Yoshizawa, Heisaburo Nakagawa, Keiji Ogawa, yoshiaki Kakino, At ...
    Session ID: A46
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.57.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    [in Japanese]
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  • Measurement of Dynamic Characteristics of an NC Lathe by Cutting Noncircular Workpiece
    Yoshitaka Morimoto, Yoshio Ichida, Ryunosuke Sato, Kensuke Takahashi
    Session ID: A47
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.59.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have developed a new evaluation method to obtain the dynamic characteristics during cutting directly by machining the specific workpiece. We choose an NC lathe as the target machine tool. Three–dimensional cutting forces are generated during turning operation. These cutting forces change periodically when the cross sectional profile of workpiece consists of polygon. Then, the periodic excitation forces are obtained from these cutting forces generated at the contact point between tool and workpiece by this operation. Further, the excited frequency of periodic and sinusoidal forces obtained by machining the non–circle workpiece depends on the workpiece revolution, the desired frequency is to be obtained by changing the spindle revolution variably from DC to maximum revolution. This combination leads the excitation forces in frequency domain to the desired frequency range and enough force amplitude as same as the swept sinusoidal excitation technique. Because 3 equations are obtained by the one measurement, the 6 unknown parameters cannot be solved analytically. The pseudo inverse matrix is used to obtain the approximate solution of the dynamic characteristics by proceed the same measurement at the same position. In this report, the proposed method and its evaluation results by using simple structural model are reported. Further, the calculated results of transfer functions of an NC lathe are introduced.
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  • Creation of V-Shaped Microgrooves with Both Flat-Ends by Non-Rotational Cutting Tools
    Takamasa Moriya, Tohru Ishida, Koji Teramoto, Yosimi Takeuchi, Tomohik ...
    Session ID: A61
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.61.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    A variety of machining methods have been devised to achieve ultraprecision parts as printing products, electronic devices, metal mold of optical components and so on. Microgrooves have been created by use of rotational diamond cutting tools, which results in the generation of microgrooves with a long slope at the cutting start and end points. Among microgrooves, flat–end microgrooves strongly attract the concern in the fields of optical cards, advanced printing technology and so on. Flat–end microgrooves mean those having no slope at the end, which cannot be machined by a conventional method. The study deals with the development of creating liner and curved microgrooves with flat–end at the both groove ends. At first, a non–rotational cutting tool makes a V–shaped microgroove. At this time, the cutting tool is stopped at the groove end so that the chips can remain there. Then, the workpiece is rotated, and the opposite groove end is machined in the similar manner. Finally, the cutting tool removes the excessive parts of chips over the plane surface at each groove end. As a result, it is found that the method has the potential of creating fine microgrooves with two flat–ends.
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  • Surface Finish of Thick Photo Resist and Nickel Electroplating Structure by Ultra-precision Cutting
    Koichi Okuda, Naoki Fujiwara, Yuichi Utsumi, Nobuji Sakai, Tadashi Hat ...
    Session ID: A62
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.63.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This paper deals with an experimental study on ultra–precision diamond cutting of thick photo resist after baking treatment or exposure and nickel electroplating structure. The purpose of this study is to obtain surface integrity and the flatness. In this study, it gives an assessment for roughness and finished surface character by ultra–precision diamond cutting, and proves possibility of multiplayer lithography process.
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  • Development of Right Under Type LED Display Parts
    Masahiko Fukui, Nagisa Kamiya
    Session ID: A63
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.65.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    It comes into the market, and LCD is the especially main current in a small terminal recently as for FPD of various each companies.
    However, the optical transmittance of LCD is difficult and it is difficult to maintain brightness with a past backlight unit because it is very low with 3˜4%.
    Decreasing the consumption of the electric power in this research and the number of parts are decreased, the cost is reduced or it pays attention to a possible right under type, and the backlight unit to enable it is developed.
    How much light is expanded with one LED is verified for that.
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  • Study on Fabrication Method for Microparts (6th Report)
    Masahiko Jin, Yota Hiraga, Masao Murakawa
    Session ID: A64
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.67.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    In this study, we investigate a manufacturing method for a microcylinder, which is adopted by us as an example of a micromachine. In previous studies, a microcylinder rod with a high aspect ratio was fabricated under optimized cutting conditions for a microrod with a high aspect ratio, and a microcylinder tube was also fabricated under optimized microdrilling conditions. In this study, the fabricated microcylinder parts, including the microcylinder rod and microcylinder tube, are assembled using an ultraprecision assembling machine, resulting in the realization of a microcylinder.
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  • Study on high-speed reaction-free Shuttle Unit
    Tomohiko Kawai, Kenzo Ebihara
    Session ID: A66
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.69.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We developed Shuttle–Unit for high speed machining of micro–grooves. This Unit can machine not only micro–grooves but also micro–dimples. PZT actuater drives tool at high frequency. Then 490 thousands of micro–dimples are machined in 4.6 minutes. We will report the result of this machining.
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  • Development of Three axis Fast Tool Servo for Ultra-Precision Machining
    Toshihiko Wada, Masayuki Takahashi, Toshimichi Moriwaki, Keiichi Nakam ...
    Session ID: A67
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.71.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    [in Japanese]
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  • Sculptured Surface Machining by Applying Ultrasonic Elliptical Vibration Cutting
    Eiji Shamoto, Norikazu Suzuki, Eiji Tsuchiya, Yasunori Hori, Hiroshi I ...
    Session ID: A68
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.73.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    A new machining method is proposed to obtain precise sculptured surfaces by applying ″elliptical vibration cutting″. A 4–axis controlled precision machine tool, which consists of an air spindle and precision elements, is developed. 4–axis control tool paths for machining sculptured surfaces are also generated by utilizing commercial CAM software and a special post processor. It is confirmed that mirror surface machining of hardened die steel can be realized by integrating the precision machine tool, the special CAM system and the 3 DOF vibration system developed in the previous research.
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  • [title in Japanese]
    Hirotaka Ojima, Katsuhiro Saitou, Libo Zhou, Jun Shimizu, Hiroshi Eda
    Session ID: A69
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.75.0
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Micromachining progresses rapidly in recent years. In order to meet the demands of miniaturization in electronic and optical applications, micromachining technology which is able to access a variety of materials in a 3 dimensional way is required. In previous research, a micro lathe which is installable and operational inside SEM vacuum chamber has been designed and developed. In this study, we do not control the position of the tool tips of the lathe with the traditional machine coordinate but propose a position control method with the pixel coordinate by images from CCD. Then we consider effects of the visual feedback control.
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  • Development of Tool Setting Error Compensation Method for 5-axis Control Ultraprecision Machining
    Makoto Sono, Koji Teramoto, Tohru Ishida, Yosimi Takeuchi, Tomohiko Ka ...
    Session ID: A70
    Published: September 15, 2005
    Released on J-STAGE: April 18, 2006
    DOIhttps://doi.org/10.11522/pscjspe.2005A.0.77.0
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    Highly integrated ultraprecision machining technology is strongly demanded to fabricate tiny and complicated shapes in high accuracy.
    However, there occurs a serious problem about the shape accuracy of machined microparts. The main cause influencing the machining accuracy is the shape error of employed cutting tools and the initial setting error of cutting tools. These errors are more remarkable as the workpieces to be machined become smaller and more complicated. Aiming at highly efficient ultraprecision micromachining, the study proposes the method to precisely measure the tool radius and to set the tool with high precision, and develops the initial tool setting error compensation system. From the results of machining experiments, it is found that the method proposed in the study is effective.
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