-
Keiji Jido
Session ID: A07
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kazumasa Nakayasu, Hidehiko Akasaka, Hiroo Kaneko, Hideshi Sato
Session ID: A08
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Makoto Fujishima, Naoshi Takayama
Session ID: A09
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
Development of integrated machine tools besed on 5 axis machining center
View full abstract
-
Masaomi Tsutsumi
Session ID: A13
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kazumasa Nagao, Hideki Shibahara, Mikito Kumagai, Hiroshi Yamashita, Y ...
Session ID: A14
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper proposed the improvement method of the angle deviation at the tilting rotary table of five-axis machining center. The angle deviation at the tilting rotary table induced by the offset load of work is the major disturbance of five-axis machining center. However, the factor causes this problem has not been clarified. In this research, the angle deviation and rotary drive torque were measured with tilting rotary table added the offset load. From the experiment result, Relation among the angle deviation, the offset load, and the rotary drive torque was clarified. The experiment model that was able to estimate the angle deviation was obtained.
View full abstract
-
Tetsuya Matsushita, Tadahiro Oki, Atsushi Matsubara
Session ID: A15
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
Geometric error between feed axes in five-axis controlled machine tool is one of factors that decrease the machining accuracy. And in five-axis controlled machine tool with tilting table, the influence of the geometric errors into the accuracy of cone frustum machining prescribed in NAS979 depends on conditions that are the location, apex angle, tilt angle or diameter of the workpiece. In this paper, we suggest a method to identify the geometric errors with the motion trajectories of cone frustum machining measured by double ball bar device in some conditions.
View full abstract
-
Kenichi Nakanishi
Session ID: A17
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Toshiyuki Muraki, Seiji Wase, Kouhei Asano, Atsushi Matsubara, Mitsuho ...
Session ID: A18
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
In these days, high-performance spindles are being required for multi-tasking machines to enhance the productivity. In order to respond this requirement a spindle unit which has high stiffness and high rotational speed has been developed with a rotary axis (B-axis), which has high speed and high accuracy. The technical items and results of the prototype are reported in this paper.
View full abstract
-
Yoshiyuki Kaneko, Katsufumi Kanahira, Naohiko Suzuki, Makoto Yamano, M ...
Session ID: A19
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
The miniaturization of many machine parts proceeds rapidly. But, a machine tool to process many machine parts is the size which is the same as former times. Therefore, there are many requirements toward the miniaturization and saving energy of the machine tool from the market. We developed an ultra slim type CNC lathe which machine width is the size of about 10 times of the diameter of the processing parts. The lathe is practical size, and easy to automate. In this paper, we discussed the result evaluated about the characteristics of this lathe, the effect on saving energy, the mechanical precision.
View full abstract
-
Takashi Shimada, Keiichi Nakamoto, Keiichi Shirase
Session ID: A21
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
A prototype of NC machine tool which realizes autonomous milling operation was developed. The machine tool developed is controlled by the digital copy milling concept. In the digital copy milling concept, not only feed speed, but also radial and axial depths of cut can be adapted for milling process control. Also, new tool paths can be added to avoid and recover from cutting troubles without any NC program. The experimental milling was performed successfully to show the effects of milling process control and tool breakage avoidance.
View full abstract
-
System development
Atsushi Matsubara, Daisuke Kono, Yusuke Koike, Iwao Yamaji
Session ID: A22
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
In order to investigate the copying rate of the cutting edge motion to the workpiece profile, a machining system which has the measurement functions of tool-motions and workpiece profiles is developed. By using the developed system, sine-wave cut with a diamond tool is carried out and the copying rate is identified by comparing the tool motion and the workpiece profile.
View full abstract
-
Production of PCD tool by six axis wire-cut EDM and application to micro-machining
Xiang Cheng, Shinichi Matsumoto, Kazuo Nakamoto, Makoto Sugai, Zhigang ...
Session ID: A23
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Koji Watari, Hiroaki Tahira, Ken Yoshino
Session ID: A31
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
The experiment of Rotary Bending Fatigue strength of micro carbide drill
Boxiao Ma, Mitsuyoshi Nomura, Takayuki Shibata, Yoshihiko Murakami, Os ...
Session ID: A32
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
In small holes drilling, the run-out of drill due to rotational motion error of spindle or eccentric chucking of drill caused machining error and larger radial force which may break the drill. In this report, relationship between bending deflection and radial cutting force, and fatigue fracture of drill were investigated theoretically and experimentally. The objective, of the paper is to find out the relation in bending, radius cutting force and fatigue life by using 3 types of carbide drill blanks with 0.1mm diameter in high speed rotating.
View full abstract
-
Sachiko Ogawa, Toshiki Hirogaki, Eiichi Aoyama, Norihiro Yoshida
Session ID: A33
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
The drilling method that can yield both high accuracy and processing efficiency have been attracting attention in slot drilling for Printed Wiring Boards (PWBs). Here, we focus on the order of drilling. Proposed slot drilling method paying attention to the hitting order was attempted for GFRP PWBs. We investigated the influence of hitting order on hole registration accuracy and processing efficiency. As a result, the hole registration errors were controlled less than 100 m using a micro drill of 1.0 mm diameter and 10 mm flute length, and processing efficiency could be improved using proposed method.
View full abstract
-
The effect of helical tool-path method on processing efficiency
Hiroaki Miwa, Akira Mizobuchi, Hitoshi Ogawa, Masahiro Masuda
Session ID: A34
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
This paper deals with the effects of helical tool-path method on the processing efficiency and the crack size in through hole drilling of glass plate using an electroplated diamond tool. Compared with the step cycle drilling, the helical method is able to get not only the space for chip removed but also the continuous drilling process, and the drilling time was 1/10 or less. Drilling conditions and diamond grain sizes are investigated in order to control crack size at the hole exit when helical drilling the glass plate of 2.83mm thickness.
View full abstract
-
Hiromasa Itto
Session ID: A36
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Evaluation of a fabricated apparatus and Evaluative Experiment
Hiroshi Murakami, Akio Katsuki, Hiromichi Onikura, Takao Sajima
Session ID: A37
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Akio Katsuki, Hiromichi Onikura, Takao Sajima, Hiroshi Murakami, Yasus ...
Session ID: A38
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
On-machine measuring system of accuracies of a deep hole is developed using a lathe. The system consists of a laser interferometer set behind a head stock and the measuring head with a pentaprism and a corner cube prism. The corner cube prism is fixed to a stylus. The stylus scans a hole wall of a workpiece set on a carriage toward tangential direction. The movement of the stylus perpendicular to the hole wall is detected by the laser interferometer. A laser beam from the interferometer goes through a hole of the main spindle and is deflected by a pentaprism to the corner cube prism. Through the measuring experiments, it is cleard that hole accuracies,e.g.,roundness, straightness, hole diameter, etc. can be measured on machine using the sysytem.
View full abstract
-
Masakazu Fujimoto, Yoshio Ichida, Ryunosuke Sato
Session ID: A43
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
-Grinding Performance of Prototype Vitrified Bonded cBN Wheel-
Yoshio Ichida, Ryunosuke Sato, Masakazu Fujimoto, Yuichiro Inoue
Session ID: A44
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Masataka Tago, Kazuhito Ohashi, Hiroyuki Hasegawa, Shinya Tsukamoto
Session ID: A45
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kodai Takahashi, Naomichi Furushiro, Tomomi Yamaguchi, Masahiro Higuch ...
Session ID: A61
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Tetsuya Tashiro, Junsuke Fujiwara, Keita Ochiai
Session ID: A62
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
C/C-SiC composite which has recently been developed is C/C composite impregnated silicon. It has the characteristic of oxide-resistance and wear-resistance in addition to the characteristic of C/C composite. This material will be also used for the brake systems, precision parts and etc. in many fields. These parts are finished with the cutting and the grinding process. But this material is difficult to cut because the tool wear is very severe. So grinding has been used for machining of C/C-SiC composite. In this study several cutting experiments with a DLC coated endmill and a PCD endmill were carried out and the relation between the tool wear and the cutting conditions was investigated.
View full abstract
-
Sadayuki Akaki, Tadaaki Satake, Takenobu Takeda
Session ID: A63
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
Rotational tools are usually subjected to combined loading of bending and torsion under cutting work. In this investigation, SKH51 (AISI M2) high speed steel was solution heat treated in the range of 1160°C to 1260°C and then tempered until 650°C.An appropriate heat treatment condition was found in terms of strength characteristics, fracture mechanisms and static fracture toughness obtained from loading tests in tension, bending and torsion. With increasing solution heat treatment temperature, the strength rose to maximum value at 1200°C and then decreased when the specimen were tempered at 560°C. Additionally, the bending strength was higher than the shearing and the tensile strengths. Brittle fracture occurred without plastic deformation in both tension and bending tests, whereas plastic deformation was produced in torsion test.
View full abstract
-
-Research of cutting tool contained high heat conductivity material-
Hiroshi Usuki, Satoshi Sakamoto, Yosuke Shimamoto, Kiminori Satou, Sat ...
Session ID: A64
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
The elongation of the tool life or shortening the machining time by high speed cutting has been examined by decreasing the cutting temperature by using the high thermal conducting material. As a result, the tool life was elongated to 2.4 times in maximums by adding the high thermal conducting material. In this report, the tool that contained the high thermal conducting material was made for trial purposes, and the tool characteristic was examined.
View full abstract
-
Breakthrough of tool wear mechanism in model experiment
Kazuhiro Shintani, Hiroyuki Ushiro, Akihiko Ikegaya
Session ID: A66
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Application of the Binderless cBN tool to high-speed conditions
Hideharu Kato, Kazuhiro Shintani, Keisuke Nakamura
Session ID: A67
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Jyunsuke Fujiwara, Yoshiaki Dohi
Session ID: A68
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
As titanium alloys have high strength to weight ratio, corrosion resistance, retention of strength at elevated temperatures, and low thermal conductivity, these characteristics have bad influence on tool wear in cutting of the titanium alloy. The titanium alloy is generally machined in the milling at low cutting speed. The demand of the titanium alloy for industrial products is increasing recently, so the high speed milling of the titanium alloy is desired. In this study, the Ti-6Al-4V alloy was machined at high cutting speed, and the tool wear progress and the cutting mechanics were experimentally investigated in order to clarify the cutting mechanism of the titanium alloy. The results obtained are as follows: The cutting with a ultra-hard alloy tool at the cutting various speeds and various feed rates under cutting method of wet, dry, mist cutting. The wear progress in the dry, mist cutting were slower than that in the wet cutting.
View full abstract
-
Effect of compressed air on the precision hole drilling by using oil hole drill
Shigehiko Sakamoto, Keisuke Higashinicho
Session ID: A73
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Application of the Textured Tool
Noritaka Kawasegi, Hiroshi Sugimori, Hideki Morimoto, Noboru Morita, I ...
Session ID: A74
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Itaru Yamazaki, Souichi Kakutani, Toshiro Shibasaka
Session ID: A75
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kan Ding, YuLong Tang, Hiroyuki Sasahara, Kimio Nishimura, Takafumi Wa ...
Session ID: A76
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Wenli Huang, Masatomo Inui
Session ID: A77
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Hiroshi Suzuki
Session ID: B06
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Kousuke Akiba, Kensuke Tsuchiya, Masayuki Nakao
Session ID: B07
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yoshihiro Tanigawa, Norikazu Nakamura, Masakazu Uchino, Masaya Sugimot ...
Session ID: B08
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Haruya Kasa, Junzi Nishii, Toshiharu Mori, Takuji Hatano, Yoshihisa Ki ...
Session ID: B09
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
We first fabricated one-dimensional periodic structures by the direct molding process on the surface of a phosphate glass. Glassy carbon mold with periodic structure was fabricated by the EB lithography and dry etching. It was possible to transfer the structure with 500 nm in pitch by the molding around the softening temperature of the glass.
View full abstract
-
Yoshimasa Kuwano, Takayuki Nagaya, Kazunari Teramoto, Toshiyuki Okita
Session ID: B13
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
In milling of the mold, the automation has been advanced with a variety of support software. In this research, a further automation was achieved by constructing an integrated platform system where those software groups were managed as Web application, and shortening the manufacturing time of the mold was enabled.
View full abstract
-
Mikio Fujio, Shouta Kuroyama, Toshifumi Muramatsu, Seiji Shirai
Session ID: B14
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
A NC geometric cutting simulator is widely used software that is able to verify a tool path without real machining process by executing the machined shape check and the interference check between a tool and a work piece during machining. However, current NC machining simulator is only considered for the geometric information of an objective shape and a tool. For this reason, it is difficult to represent cutting load, tool deflection and wear caused by a physical phenomenon. This paper describes about calculation algorithm of cutting load , deflection and wear of tool based on removal volume.
View full abstract
-
Verification of the machined accuracy using NURBS interpolation
Mikio Fujio, Toshifumi Muramatsu, Kana Miyashiro, Hiroshi Suzuki
Session ID: B15
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
The purpose of this research is to develop hi-speed and hi-accuracy machining system which is corresponded to 1 micron of accuracy. The servo data is the set of position command at every servo cycle time, which is minimum unit of position command in NC machining processes. The servo data is directly generated by geometric model interpolation without NC program. And motion errors are simulated and compensated automatically. This report refers to the result of accuracy comparing proposed system with NURBS interpolation which is able to control free-form curve with hi-accuracy.
View full abstract
-
Validation case study of basic system
Mikio Fujio, Kana Miyashiro, Toshifumi Muramatsu, Kunimasa Uematsu
Session ID: B16
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
The purpose of this research is to develop hi-speed and hi-accuracy machining system. The servo data is the set of position command at every servo cycle time, which is minimum unit of position command in NC machining processes. The servo data is directly generated by geometric model interpolation without NC program. In this research the tool path generation system that is able to predict and compensate the tool deflection and fluctuation of cutting load is proposed. This report refers to the validation result of the basic system of proposed system.
View full abstract
-
Application to Production of Minute Metal Mold
Yoshihiro Tanaka, Fujio Okuyama, Noritaka Yoshikawa, Tutomu Takiyama, ...
Session ID: B18
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
The precision component made from a minute metal mold becomes the necessity and indispensable along with miniaturizing and making of an industrial product high density. Moreover, the material of the metal mold that is excellent in durability in high hardness is used. Then, to apply the cemented carbide to a minute metal mold, the minute shape processing by cutting to the cemented carbide was done with the cBN tool and the diamond tool. As a result, specular surface is obtained, and it has been understood that cutting is effective in the processing of a minute metal mold.
View full abstract
-
Influence of Co Contents and Tool Materials
Takeshi Miyamoto, Junsuke Fujiwara, Fumiaki Miya
Session ID: B19
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
Cemented carbides have the high mechanical properties, and they are used for not only cutting tools but also dies. The grinding is commonly used for finish machining. On the other hand, the cutting is sometimes used in the efficient processing. However, it is well known that the tool wear is very severe in cutting with the PCD tool. It is necessary to make clear the machinability in cutting the cemented carbides in detail. In this study, the turning of various kinds of cemented carbides was carried out with the PCD and the cBN tools. The influence of Co contents and tool materials was investigated.
View full abstract
-
Nobuyasu Kon, Masahiro Mizuno, Toshirou Iyama, Naohiro Nishikawa, Hide ...
Session ID: B20
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
Aiming at finishing metal molds, the authors have developed a new lapping machine which can impart three-dimensional motions to a tool. Using the developed machine, some lapping experiments were carried out onto an electrical discharge machining processed tool steel surface. This paper describes the relationship between the tool motion and the lapping performance.
View full abstract
-
Yuki Nakamura, Hideki Aoyama
Session ID: B21
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Prediction of Machining Error in milling of inclined surface by dynamic cutting simulation
Takatoshi Nishikawa, Keiichi Kikuta, Hiroyuki Yamashita
Session ID: B31
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
Dynamic cutting simulation that calculates cutting force, tool vibration, and machined surface profile was developed to predict machining error caused by dynamic deflection of ball end mill. Simulation model includes the process damping force due to contact of cutting edge with workpiece. Unknown cutting parameters, which are coefficients of cutting force and process damping force, were estimated by minimizing the sum of squared deviations between calculated cutting forces and tool vibrations and measured ones. The predicted machining errors by using these parameters are good agreement with the results of cutting experiments of inclined surface with a long ball end mill under a wide range of spindle speed, where it is difficult to predict machining errors by static deflection model.
View full abstract
-
Development of Damper for Chatter Vibration control in Machining
Koji Utsumi, Masayuki Kyoi, Tomu Kato, Nobuo Miyashita, Toshiaki Maita
Session ID: B32
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Yuji Takagi, Yoshihiko Kimura
Session ID: B33
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
-
Tomohiro Osuga, Haruki Obara, Shigeru Yamada
Session ID: B34
Published: 2008
Released on J-STAGE: March 01, 2009
CONFERENCE PROCEEDINGS
FREE ACCESS
It is difficult to machine a narrow deep groove in a die because of the bending and vibration of the end mill. A method using a end mill backed up by a plate during the machining is developed and a method assisted with magnetic force for the back up is examined. The effect of these methods are reported.
View full abstract
