1. A log consolidation device comprising:
a selection unit that selects at least part of fields included in a plurality of logs stored in a storage unit and chronologically representing processes executed by one or a plurality of processing units, each log including information representing content of a process and a count value relating to the process, the information being divided into a plurality of fields;
a deletion unit that deletes, from at least part of the plurality of logs stored in the storage unit, items of information in the fields selected by the selection unit; and
an integration unit that integrates into a single log two or more of the plurality of logs having identical items of information in fields that were not deleted by the deletion unit by summing up the count values of the two or more of the plurality of logs.
2. The log consolidation device according to claim 1, further comprising an aggregation unit that aggregates a number of times that each of the plurality of fields is designated as a display field, wherein the selection unit selects a field(s) whose number of times aggregated by the aggregation unit is smaller than that of the other fields.
3. The log consolidation device according to claim 2, wherein the deletion unit determines, for each field, a period in which the items of information are retained without being deleted or a number of items of information that are retained without being deleted, based on the number of times aggregated by the aggregation unit with regard to the field.
4. The log consolidation device according to claim 1, wherein
each of the plurality of logs includes, in the information, an item of date and time information expressing a date and time at which a process was executed by the processing unit with a numerical value for each one of a plurality of units, and
the log consolidation device includes a conversion unit that converts two or more items of date and time information having different numerical values in part of the plurality of units to a common representative value.
5. The log consolidation device according to claim 1, further comprising:
a display control unit that causes a display unit to display a screen for allowing a user to designate a display format used when the logs stored in the storage unit are displayed; and
a reception unit that receives a designation by the user according to the screen caused to be displayed on the display unit by the display control unit,
wherein
when the deletion unit deletes items of information, the display control unit changes the screen such that the user cannot designate a display format that has become unable to be displayed as a result of deletion of the items of information.
6. A log consolidation method comprising:
selecting at least part of fields included in a plurality of logs stored in a storage unit and chronologically representing processes executed by one or a plurality of processing units, each log including information representing content of a process and a count value relating to the process, the information being divided into a plurality of fields;
deleting, in at least part of the plurality of logs stored in the storage unit, items of information in the selected fields; and
integrating into a single log two or more of the plurality of logs having identical items of information in fields that were not deleted by summing up the count values of the two or more of the plurality of logs.
7. A non-transitory computer-readable medium storing a program causing a computer to execute a method for log consolidation, the method comprising:
selecting at least part of fields included in a plurality of logs stored in a storage unit and chronologically representing processes executed by one or a plurality of processing units, each log including information representing content of a process and a count value relating to the process, the information being divided into a plurality of fields;
deleting, in at least part of the plurality of logs stored in the storage unit, items of information in the selected fields; and
integrating into a single log two or more of the plurality of logs having identical items of information in fields that were not deleted by summing up the count values of the two or more of the plurality of logs.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A torque transmitting system, the torque transmitting system comprising:
a) a driving member, the driving member having teeth on its outer surface; and
b) a driven member, the driven member having teeth conjugate to the teeth of the driving member for transmitting torque therebetween;
wherein the teeth of the driving member and the driven member have a tooth profile defined in a plane of r-\u0398 polar coordinate system, the tooth profile provided by a functionally continuous curve obtained by combining a first curve to a second curve, the first curve being represented by a mathematical expression and the second curve being the mirror-image of the first curve about a radial axis passing through the central axis of the driving member and one of two extreme points of the first curve, and the mathematical expression for the first curve being defined by
r=h\u0398\u03b2\u221212\u03a0(sin(2\u03a0\u0398\u03b2)), in a defined area of 0\u2266\u0398\u2266\u03b2,
wherein,
r is a function of \u0398 and defines the radial distance from a final base surface on which the tooth profile is generated;
\u0398 is a rotational angle varying from 0 to \u03b2;
h is a constant denoting the depth of the tooth;
\u03b2 is a constant equal to (\u03a0z); and
z is the number of teeth.
2. The torque transmitting system as claimed in claim 1, wherein the torque transmitting system is a twin-screw extruder.
3. The torque transmitting system as claimed in claim 1, wherein the torque transmitting system is a shaft-gear system.
4. The torque transmitting system as claimed in claim 1, wherein the driving member is an extruder shaft of a twin-screw extruder.
5. The torque transmitting system as claimed in claim 1, wherein the conjugating teeth on the driving member and the driven member are concentric.
6. The torque transmitting system as claimed in claim 1, wherein the teeth are manufactured by spark erosion method.
7. The torque transmitting system as claimed in claim 1, wherein the teeth are manufactured by WEDM (Wire Electro-Discharge Machining) method.
8. The torque transmitting system as claimed in claim 1, wherein the teeth on the driving member are manufactured by the spark erosion method and teeth on the driven member are manufactured by WEDM (Wire Electro-Discharge Machining) method.
9. A torque transmitting system for an extruder, the torque transmitting system comprising:
a. at least one extruder-shaft, the extruder-shaft having teeth on its outer surface; and
b. at least one extruder element, the extruder element having teeth conjugate to the teeth of the extruder-shaft for transmitting torque therebetween;
wherein the teeth of the extruder-shaft and the extruder-element have a tooth profile defined in a plane of r-\u0398 polar coordinate system, the tooth profile provided by a functionally continuous curve obtained by combining a first curve to a second curve, the first curve being represented by a mathematical expression and the second curve being the mirror-image of the first curve about a radial axis passing through the central axis of the extruder-shaft and one of two extreme points of the first curve, and the mathematical expression for the first curve being defined by
r=h\u0398\u03b2\u221212\u03a0(sin(2\u03a0\u0398\u03b2)), in a defined area of 0\u2266\u0398\u2266\u03b2,
wherein,
r is a function of \u0398 and defines the radial distance from a final base surface on which the tooth profile is generated;
\u0398 is a rotational angle varying from 0 to \u03b2;
h is a constant denoting the depth of the tooth;
\u03b2 is a constant equal to (\u03a0z); and
z is the number of teeth.
10. A torque transmitting system as claimed in claim 9, wherein the teeth are manufactured by spark erosion method.
11. A torque transmitting system as claimed in claim 9, wherein the teeth are manufactured by WEDM (Wire Electro-Discharge Machining) method.
12. A torque transmitting system as claimed in claim 9, wherein the teeth on a plurality of the extruder-shafts are manufactured by spark erosion method and teeth on a plurality of the rotary elements are manufactured by a WEDM (Wire Electro-Discharge Machining) method.
13. A torque transmitting system as claimed in claim 9, wherein a plurality of the extruder-shafts are rotating in the same direction.
14. A torque transmitting system as claimed in claim 9, wherein a plurality of the extruder-shafts are rotating in different directions.