摘要:
A spindle apparatus of a machine tool comprises a main spindle rotatably supported in a housing via bearings. A helium circulation system is provided for introducing helium, lower in density and fluid pressure than air, through a helium supply port into a gap on the outer periphery of the main spindle within the housing, and for discharging helium to the outside through a helium discharge port. The main spindle is rotated in an atmosphere of the helium. The spindle apparatus is simple in structure, but can minimize the power loss of the main spindle and reduce the motor power, and also gives a cooling effect.
摘要:
Heat-receiving pipes of a heat receiver have portions having high heat flux on at the side near an opening in a length direction and extending to positions outside of a casing in a radial direction. Expanded sections having an expanded pitch circle diameter constituted by the plurality of heat-receiving pipes are formed, and a heat input quantity per unit area of the heat-receiving pipe is decreased in the portions near the opening.
摘要:
Provided are manufacturing facilities capable of manufacturing many kinds of products efficiently in a small lot without increasing their cost. The manufacturing facilities comprise working cells (21 and 22) having at least two machine tools (11 and 12) arranged for working a workpiece (W), a rinsing cell (23) having at least two rinsing devices (13) arranged for rinsing the workpiece worked, an inspecting cell (24) having at least two inspecting devices (14) arranged for inspecting leakage of the workpiece rinsed, and a robot arm (15) capable of gripping the workpiece and transferring the workpiece between the individual cells (21, 22, 23 and 24). The individual cells (21, 22, 23 and 24) are arranged around the robot arm (15).
摘要:
A rolling method and machine provides for decreasing the rolling load of work rolls of a rolling mill for a given reduction ratio achieved thereby. A pair of pinch rolls upstream of the work rolls have projections that form a large number of recesses in one or both surfaces of a metal workpiece. A lubricating agent is forced into the recesses in the region of contact between the workpiece and the work rolls. As a result, when the workpiece is rolled by the work rolls the lubricating agent is retained in the recesses such that the recesses progressively are flattened, thereby causing the lubricating agent to form a boundary film between the portion of the workpiece being rolled and the work rolls. The recesses are controlled to regulate the dimension of the length of each recess in the direction of rolling of the workpiece, to regulate the inclination of front and rear walls of each recess, and to regulate the total area of the recesses relative to the total surface area of the workpiece.
摘要:
The sunlight collection system is provided with a reflecting mirror which is placed on the surface of the ground to reflect sunlight, a light receiving means which is disposed above the surface of the ground and has an incident portion into which the sunlight reflected by the reflecting mirror is made incident, light amount sensors which are mounted at least at two locations facing each other at an outer edge of the incident portion of the light receiving means, a turning mechanism which allows the reflecting mirror to turn around at least one axis, and a direction control unit which obtains light amounts detected respectively by the light amount sensors that face each other, while allowing the reflecting mirror to turn by driving the turning mechanism, thereby adjusting an angle of the reflecting mirror on the basis of the light amounts.
摘要:
A machine tool 100, in which cut dust is produced and scattered due to the cutting of a work 1 with a tool, includes a cutting liquid jetting device 130 surrounding the work 1 with cutting liquid 10 by jetting the cutting liquid 10 in such a shape that the cutting liquid 10 spreads wider on a lower side than on an upper side.
摘要:
An object of the present invention is to provide: a spindle inclination detector capable of surely detecting spindle inclination with a simple configuration; and a machine tool including the spindle inclination detector. Spindle inclination detectors (41A, 41B) are equipped in columns (32A, 32B) of a portal bridge (24) of a machine tool (21). Each spindle inclination detector includes: a string (43) which hangs vertically with an upper end fixed to the column (reinforcement (32b)) and a lower end attached to a weight (45); a gap sensor (44) which is attached to the string to measure a distance to a front face plate (32a) of the column; and an oil damper (46). Moreover, a spindle inclination correction controller provided to the machine tool controls a Peltier device (42A,42B) attached to a rear face plate (32d) of the column, on a basis of an average distance measured by the gap sensor, and thus corrects an inclination of a spindle (28) due to the thermal deformation of the column by correcting thermal deformation of the column.
摘要:
A hot rolling line is constructed by a pair or a plurality of pairs of rolling rolls disposed opposingly on an upper side and on a lower side of a workpiece (1) to be rolled that is pinched in between the rollers. A descaling apparatus (5) has jet flow nozzles disposed so that two jetted flows, being liquid, gas or plasma, are opposing flows so as to collide with the surface of a strip on the upstream side of the rolling rolls and then collide with each other. The jet flow nozzles are disposed, so as to incline in a direction to face each other so that the angle of inclination is 15.degree. to 60.degree. from the horizontal direction of the strip surface.
摘要:
Spindle inclination detectors (41A, 41B) are equipped in columns (32A, 32B) of a portal bridge (24) of a machine tool (21). Each spindle inclination detector includes: a string (43) which hangs vertically with an upper end fixed to the column (reinforcement (32b)) and a lower end attached to a weight (45); a gap sensor (44) which is attached to the string to measure a distance to a front face plate (32a) of the column; and an oil damper (46). Moreover, a spindle inclination correction controller provided to the machine tool controls a Peltier device (42A, 42B) attached to a rear face plate (32d) of the column, on a basis of an average distance measured by the gap sensor, and thus corrects an inclination of a spindle (28) due to the thermal deformation of the column by correcting thermal deformation of the column.
摘要:
An object is to provide a printing apparatus or the like that improves printing accuracy when a carriage moves back and forth for printing. A block 51 on a block surface plate is mounted on the block surface plate at a predetermined location. On the other hand, a substrate 54 on a print surface plate is mounted at a location corresponding to the location of the block 51, that is, a location where a picture transfer is desirably received from a blanket cylinder 13. In the present invention, the arrangement of sliders 52 and 40 for the block carriage 50 and a printing carriage 7 to reciprocate along two rails 30 in the block carriage 50 and that in the printing carriage 7 are the same. With such an arrangement, at the same location immediately below the blanket cylinder 13 on the same track 30, even when the straightness of the rail 30 is not sufficient, the block 51 and the glass substrate 54 take the same position at the location, and thus print misalignment can be prevented.