摘要:
A V-type, multicylinder internal combustion engine with multiple isolated crank chambers formed by partitioning a space inside of a crankcase with multiple support walls for supporting a crankshaft, and multiple oil outlet holes, respectively communicating with the isolated crank chambers to separately discharge oil from the multiple isolated crank chambers, uses a single scavenging pump to discharge the oil from the isolated crank chambers rather than connecting multiple scavenging pumps, respectively, to the oil outlet holes. The engine includes an oil collecting pan mounted on a bottom wall of a crank chamber covering the multiple oil outlet holes respectively communicating with the multiple isolated crank chambers for collecting the oil passed through the oil outlet holes. The oil collecting pan has an oil reservoir with an oil outlet opening, and a single scavenging pump for drawing the oil stored in the oil collecting pan through the oil outlet opening.
摘要:
A V-type, multicylinder internal combustion engine with multiple isolated crank chambers formed by partitioning a space inside of a crankcase with multiple support walls for supporting a crankshaft, and multiple oil outlet holes, respectively communicating with the isolated crank chambers to separately discharge oil from the multiple isolated crank chambers, uses a single scavenging pump to discharge the oil from the isolated crank chambers rather than connecting multiple scavenging pumps, respectively, to the oil outlet holes. The engine includes an oil collecting pan mounted on a bottom wall of a crank chamber covering the multiple oil outlet holes respectively communicating with the multiple isolated crank chambers for collecting the oil passed through the oil outlet holes. The oil collecting pan has an oil reservoir with an oil outlet opening, and a single scavenging pump for drawing the oil stored in the oil collecting pan through the oil outlet opening.
摘要:
A numerical control apparatus controls a machine tool including an X axis for moving a turret to which a plurality of tools are attached, a H axis for rotating the turret, and a C axis for rotating a work and not including a Y axis orthogonal to the X axis. The numerical control apparatus includes a unit configured to independently rotate the H axis according to an independent rotation command for the H axis and perform tool replacement during an imaginary Y-axis control mode, the imaginary Y-axis control mode being a mode for converting an X-Y axes movement command in a machining program into a command in an X-H-C coordinate system and for driving the X axis, the H axis, and the C axis in association with one another according to the converted command.
摘要:
A numerical control apparatus includes an imaginary-Y-axis control unit configured to execute an imaginary Y-axis control mode which is a mode for converting an X-Y axes movement command in a machining program described in a program coordinate system into a command in a machine coordinate system including X-H-C axes and for driving the X axis, the H axis, and the C axis in association with one another according to the converted command, an acquiring unit configured to acquire, when an emergency stop occurs during the imaginary Y-axis control mode, present positions of the X axis, the C axis, and the H axis at the time when the emergency stop is released, and a restoring unit configured to restore a present X-axis coordinate position and a present Y-axis coordinate position in the program coordinate system from the acquired present positions of the X axis, the C axis, and the H axis.
摘要:
A numerical control device including tapping spindle (S1, S2) time constant selecting means that compares acceleration and deceleration time constants of the S1 and S2 axes and selects the larger time constant, drilling axis (X1) acceleration and deceleration processing means that calculates an acceleration and deceleration movement amount of the X1 axis based on the selected spindle time constant and a commanded spindle rotation number and moves the drilling axis to the calculated position, synchronized tapping interpolation processing means that synchronizes the tapping spindle with the drilling axis based on the movement amount output from the drilling axis (X1) acceleration and deceleration processing means and a pitch, and tapping spindle synchronization processing means that transfers the rotation amount of the tapping spindle output from tapping spindle (S1)-drilling axis (X1) synchronization processing means to the synchronized side.
摘要:
A numerical control device controls a machine tool having an X axis for moving a turret to which tools are attached, a Z axis for moving work, and a B axis for rotating the turret and having at least one of an H axis for rotating the turret around a center line perpendicular to the center line of rotation of the B axis and a C axis for rotating the work around a center line parallel to the Z axis. The numerical control device includes a unit that performs, during an virtual Y-axis inclined surface machining mode, virtual Y inclined surface machining for moving the tool along the Y axis relatively to the inclined surface in a state in which the tool is inclined such that a center axis is perpendicular to an inclined surface inclined from the X axis and the Z axis.
摘要:
A numerical control device that controls a machine tool that includes an X-axis for moving a turret, an H-axis for rotating the turret, and a C-axis for rotating a workpiece and that does not have a Y-axis orthogonal to the X-axis, including an analyzer that analyzes a virtual-Y-axis rapid-traverse command in a virtual-Y-axis interpolation mode in which an X-Y-axis movement command in a machining program is converted, and the X-axis, the H-axis, and the C-axis are cooperatively driven; a C-axis interpolation processor that interpolates a C-axis angle in response to the analyzed virtual-Y-axis rapid-traverse command; and an X-axis interpolation processor that interpolates an X-axis position based on the interpolated C-axis angle. The numerical control device controls an X-axis position so as to rotate the C-axis while keeping a C-axis velocity to a constant velocity and to enable a virtual Y-axis to move substantially linearly.
摘要:
A numerical control apparatus includes an imaginary-Y-axis control unit configured to execute an imaginary Y-axis control mode which is a mode for converting an X-Y axes movement command in a machining program described in a program coordinate system into a command in a machine coordinate system including X-H-C axes and for driving the X axis, the H axis, and the C axis in association with one another according to the converted command, an acquiring unit configured to acquire, when an emergency stop occurs during the imaginary Y-axis control mode, present positions of the X axis, the C axis, and the H axis at the time when the emergency stop is released, and a restoring unit configured to restore a present X-axis coordinate position and a present Y-axis coordinate position in the program coordinate system from the acquired present positions of the X axis, the C axis, and the H axis.
摘要:
A numerical control device that controls a machine in which a main set including an X1 axis, a Z1 axis and a first turret axis and a sub-set including an X2 axis, a Z2 axis and a second turret axis are arranged to be point-symmetric with respect to a C axis, wherein each of the turret axis of the main set and the turret axis of the sub-set are selectively designated as a reference side and a synchronized side and a simultaneous D-cut control mode command for selecting a mode in which both turret axes are simultaneously actuated in synchronization using the output of the turret axis of one of the sets is set; wherein the numerical control device comprises, simultaneous D-cut command processing means, X1/Y1/C axis interpolation processing means, X2/Y2 axis interpolation processing means, and H axis command selecting means.
摘要:
Provided is a massager which enables armrests to be used effectively even with a backrest in a reclined state. The massager includes: a backrest having a massaging mechanism for massaging the back of a user; a frame which supports the backrest in such a manner that the backrest can be reclined backwards; a pair of armrests which extend forward respectively from left and right side positions of the backrest; and a linking mechanism which changes an attitude of the pair of armrests in conjunction with a reclining operation of the backrest, in such a manner that a rear part of each armrest falls lower than the front part of each armrest, when the backrest is reclined backward.