摘要:
There are provided a device and a method capable of reducing a press angle control error caused by a press load variation and of preventing a press load variation of one press machine from acting on the other press machine.The device includes: a reference value output unit 25 which outputs a press angle reference value; and a press angle detection unit 27, a speed command unit 29, and a driving unit 31 which are provided for each press machine. The press angle detection unit 27 detects a press angle of the corresponding press machine and outputs a press angle detection value. The speed command unit 39 outputs a command speed value of a motor of the corresponding press machine on the basis of the press angle reference value and the press angle detection value. The driving unit 31 controls a speed of the motor of the corresponding press machine on the basis of the command speed value. The device further includes a correction unit 33 which corrects the press angle reference value or the command speed value so that a difference between the press angle reference value and the press angle is within a predetermined range.
摘要:
A device for reducing the press angle control error caused by press load variation, where the device includes: a reference value output unit that outputs a press angle reference value, a press angle detection unit, a speed command unit, and a driving unit. The press angle detection unit detects a press angle of the corresponding press machine and outputs a press angle detection value. The speed command unit outputs a command speed value of a motor of the corresponding press machine based on the press angle reference value and the press angle detection value. The driving unit controls the motor speed of the corresponding press machine based on the command speed value. The device further includes a correction unit that corrects the press angle reference value or the command speed value so the difference between the press angle reference value and the press angle is within a predetermined range.
摘要:
A composite magnetic material manufactured by mixing a metal magnetic powder with an insulating binder to produce a mixed powder, press-molding the mixed powder to produce a molded product, and heat-treating the molded product in an oxidizing atmosphere at not lower than 80° C. and not higher than 400° C. to form an oxide film on a surface of the molded product. The metal magnetic powder includes Si, Fe, and component A, and the composition thereof satisfies 5.5%≦Si≦9.5%, 10%≦Si+component A≦13.5%, and the remainder is Fe, where % denotes weight %. The component A includes at least one of Ni, Al, Ti, and Mg.
摘要:
In left and right web plates (12) of a boom (11), first to fifth web materials (12A to 12E) are joined at edge portions in a front-rear direction along welding lines (13A to 13D). In an upper flange plate (14), a rear upper flange material (14A), a front upper flange material (14B), and a middle upper flange material (14C) are joined at edge portions in a front-rear direction along welding lines (15A, 15B). Ina lower flange plate (16), first to sixth lower flange materials (16A to 16F) are joined at edge portions in a front-rear direction along welding lines (17A to 17E). The welding lines (13A to 13D) of the left and right web plates (12) are disposed in positions that are different from those of the welding lines (15A, 15B) of the upper flange plate (14) and the welding lines (17A to 17E) of the lower flange plate (16) in a front-rear direction. This makes it possible to reduce the entire weight and thereby achieve reduction in weight while ensuring bending strength, torsional strength, and the like of the boom (11).
摘要:
Turbines and compressors, which constitute superchargers, are disposed in series on an exhaust gas passage and an air intake passage, respectively. The supercharger is equipped with a supercharger rotation sensor, which transmits a detection signal obtained according to the rotation of the compressor to a control device, a bypass passage, which bypasses exhaust gas from the upstream side to the downstream side of the turbine, and a bypass valve, which regulates the flow rate of exhaust gas flowing through the bypass passage. Control device regulates the rotational speed of the compressors in a high-efficiency range by producing a control signal based on the detection signal from the supercharger rotation sensor, and sending the control signal to the bypass valve.
摘要:
An arm of a hydraulic excavator is formed as a box-shaped structural body surrounded by left and right side plates, an upper plate joined to each of the upper end sides of each side plate, a lower plate joined to each of the lower end sides of each side plate, and a thick rear plate joined to each of the rear end sides of each side plate and the upper plate. The side plates are formed by joining a rear thick side plate and a front thin side plate. The upper plate is formed by joining two members, that is, a rear thick upper plate and a front thin upper plate, and the lower plate is formed by joining two members, that is, a rear thick lower plate and a front thin lower plate.
摘要:
The present invention provides a method of manufacturing an active material comprising both α-LiVOPO4 and β-LiVOPO4. The method of manufacturing an active material in accordance with the present invention comprises a hydrothermal synthesis step of heating a mixture containing a lithium source, a phosphate source, a vanadium source, and water and having a pH greater 7 but smaller than 12.7; and a firing step of firing the mixture after being heated under pressure in the hydrothermal synthesis step.
摘要:
A composite magnetic material is made by performing pressure compacting on metal magnetic powder to which a binding material is added, and the binding material contains an acrylic resin having a silyl group as a functional group. In addition, the composite magnetic material is subjected to a heat treatment at a temperature between 700 and 1,000° C. in a non-oxidizing atmosphere after the pressure compacting. The composite magnetic material has magnetic characteristics useful for electromagnetic components such as an inductor, a choke coil, and a transformer with a small size and at a high frequency.
摘要:
A cetane number detection device in which an angular velocity detection device (10) for detecting the rotation angular velocity of the crankshaft (11) of an engine (54), and which detects a variation in the value of the amplitude of the angular velocity detected by the angular velocity detection device (10) as a variation in cetane number.
摘要:
A document management system includes a reception unit that receives a designated document that has been designated by a user, an extraction unit configured to extract signature information from the received designated document, a search unit configured to search a database for another document having signature information that matches the signature information extracted by the extraction unit, the another document being a different version of the designated document, and a display control unit configured to, based on a result of the search, perform control to display document information of the designated document and document information of the another document in association with version information determined based on the signature information.