Abstract: A machine tool capable of performing an accurate machining by preventing a second saddle 6 from displacing aslant to suppress the vibrations of a spindle head 8, wherein a column 2 is fixedly installed on bed 1, a first saddle 4 is movably guided by the column 2 in vertical direction f1, a second saddle 6 is movably guided by the first saddle 4 in lateral direction f2, a spindle head 8 is movably guided by the second saddle 6 in longitudinal direction 18, and interfitted guide route devices 5A, 5B, 5C for guiding the second saddle 6 in lateral direction f2 are formed at the rear lower position of the first saddle 4 as well as at the front upper and lower positions of the first saddle 4.

Abstract: A column fixed type machine tool capable of surely suppressing the dispersion of chips and coolant to the outside of a machining space and reducing the entire size thereof so as to increase a workability and improve a working environment, wherein a column (2) is installed fixedly on a bed (1), a spindle head (8) is installed at the front of the column movably in vertical, lateral and longitudinal directions (f1, f2, f3), a jig device (42) is installed on the bed at the front of the column, a column side cover body (cov1) densely covering the front surface of the column is provided so as to protect against the dispersion of chips, the cover body is formed so as to allow the spindle head (8) to be moved in vertical and lateral directions, a jig side cover body (cov2) covering at least the surrounding of a jig main body part (47) is installed, an intermediate cover body (cov3) covering the upper and right and left sides of the spindle head moving range is installed between the jig side cover body and the column

Abstract: A spindle device of a machine tool stably spouting spray coolant from the tip of a tool (26) in a tool holder (25) and suppressing a waste of the spray coolant, wherein the tool holder (25) is fixed to the tip part of a spindle (2) mechanically detachably through a clamp device (KR), an extension passage (101) is formed in the state that an in-spindle spray coolant passage (100) formed in the center part of the spindle (2) is extended forward (f2), and the in-spindle spray coolant passage (100) is formed to communicate with an in-holder spray coolant passage (102) formed in the center part of the tool holder (25) through the extension passage (101).

Abstract: A machine tool capable of performing an accurate machining by preventing a second saddle 6 from displacing aslant to suppress the vibrations of a spindle head 8, wherein a column 2 is fixedly installed on a bed 1, a first saddle 4 is movably guided by the column 2 in vertical direction f1, a second saddle 6 is movably guided by the first saddle 4 in lateral direction f2, a spindle head 8 is movably guided by the second saddle 6 in longitudinal direction f3, and guide route means 5A, 5B, 5C for guiding the second saddle 6 in lateral direction f2 are formed at the rear lower position of the first saddle 4 as well as at the front upper and lower positions of the first saddle 4.

Abstract: A column fixed type machine tool capable of surely suppressing the dispersion of chips and coolant to the outside of a machining space and reducing the entire size thereof so as to increase a workability and improve a working environment, wherein a column (2) is installed fixedly on a bed (1), a spindle head (8) is installed at the front of the column movably in vertical, lateral and longitudinal directions (f1, f2, f3), a jig device (42) is installed on the bed at the front of the column, a column side cover body (cov1) densely covering the front surface of the column is provided so as to protect against the dispersion of chips, the cover body is formed so as to allow the spindle head (8) to be moved in vertical and lateral directions, a jig side cover body (cov2) covering at least the surrounding of a jig main body part (47) is installed, an intermediate cover body (cov3) covering the upper and right and left sides of the spindle head moving range is installed between the jig side cover body and the column

Abstract: A spindle device and a tool holder of a machine tool stably ejecting spray coolant from the tip of a tool (19) in a tool holder (18) and suppressing a waste of the spray coolant, wherein the tool holder (18) is fixed to the tip part of a spindle (2) mechanically detachably through clamp means (KR), an extension passage (104) is formed in the state that an in-spindle spray coolant passage (102) formed in the center part of the spindle (2) is formed to communicate with the in-holder spray coolant passage (103) through the extension passage (104).

Abstract: A machine tool and a cover device for the machine tool capable of preventing work cutting chips and coolant from falling on the rear part of a spindle head (8) and the operating positions of a first saddle (4) and a second saddle (6) without expanding the lateral width of the machine tool, wherein a column (2) is fixedly installed on a bed (1), the first saddle (4) is guided on the front surface of the column (2) movably in vertical direction (f1), the second saddle (6) is guided on the front surface of the first saddle (4) movably in lateral direction (f2), and the spindle device (8) is guided on the second saddle (6) movably in longitudinal direction (f3) and, in addition, a first cover plate (31) is fixed to the second saddle (6), a side cover plate (33) is installed continuously with each of the right and left side edges of the cover plate (31) bendably in longitudinal direction (f3), a second cover plate (39) is fixed integrally with the first saddle (4), and a third cover plate (41) is installed fixedly

Abstract: A machine tool capable of reducing the vibration of a spindle head to enable a high-precision machining, wherein a column (2) is mounted fixedly onto a bed (1), a first saddle (4) forming a square frame body of rectangular cross-section is mounted on the column (2) movably in vertical direction (f1), a second saddle (6) forming a square frame body (6a) smaller in size than the above square frame body is mounted inside the first saddle (4) movably in lateral direction (f2), a horizontal guide frame (6b) of a specified length is mounted on the rear surface of the square frame body (6a) of the second saddle (6) in the state of being crossed at right angle to the rear surface, rail members (5, 7) are laid down on square frame body upper and lower prismatic bodies (4b, 4c) of the first saddle (4) and the horizontal guide frame (6b) of the second saddle (6), and concrete is filled sealingly into the square frame body of the first saddle (4) and/or the square frame body of the second saddle (6) and the horizontal gu