Abstract: A recording device includes an acquisition unit configured to acquire predetermined information including at least an image of an area around a vehicle, a recording unit configured to record the predetermined information acquired by the acquisition unit as a file, a playback unit configured to play back a designated file among a plurality of files recorded in the recording unit, and a file management unit configured to extract a file recorded in a period substantially continuous in time series with a file being played back from the plurality of files and protect writing of the extracted file. Thus, it is possible to provide a recording device capable of preventing writing of a file related to a file being played back.

Abstract: An angle adjustment mechanism includes an angle adjustment block including first opposing side faces inclined relative to the direction along the rotation axis of the turret; first and second adjustment blocks having inclined faces that are brought into surface contact with respective first opposing side faces, and movable in a direction along the rotation axis; a depression formed in a tool holder, and accommodates the angle adjustment block with the first and second adjustment blocks; first and second adjusters that move the first and second adjustment blocks in a direction along the rotation axis of the turret; and a first positioning member conducting positioning between the turret and the tool holder, and a second positioning member conducting positioning between the turret and the angle adjustment block. This configuration provides a mechanism for attaching a tool holder to a turret which can easily conduct highly precise angle adjustment.

Abstract: A machine tool includes a drive portion that moves a movable cover on a rail, cleaning means that removes a foreign object on the rail, and a body control unit that controls the drive portion so as to move the movable cover on the rail. The machine tool further includes detection means that detects a foreign object on the rail, and the body control unit is configured to control the cleaning means so as to remove a foreign object on the rail, and to control the drive portion so as to move the movable cover on the rail, if the detection means does not detect any foreign object on the rail, or if the detection means detects a foreign object on the rail and thereafter the cleaning means removes the foreign object on the rail.

Abstract: A recording device includes an acquisition unit configured to acquire predetermined information including at least an image of an area around a vehicle, a recording unit configured to record the predetermined information acquired by the acquisition unit as a file, a playback unit configured to play back a designated file among a plurality of files recorded in the recording unit, and a file management unit configured to extract a file recorded in a period substantially continuous in time series with a file being played back from the plurality of files and protect writing of the extracted file. Thus, it is possible to provide a recording device capable of preventing writing of a file related to a file being played back.

Abstract: A machine tool including a fixed cover and a movable cover for covering at least part of a machining region includes a cover control device that includes a driving circuit for driving the movable cover, an abnormality detection device that detects an abnormality while the movable cover is driven, a self-diagnosis device that performs evaluation on whether the abnormality detection device is normal, and an output device that outputs a result of the evaluation by the self-diagnosis device. The self-diagnosis device is configured to perform the evaluation on whether the abnormality detection device is normal based on an operating state of the abnormality detection device at a time when a pseudo abnormality is generated on the movable cover by driving the movable cover via the driving circuit.

Abstract: There is provided a machine tool comprising: a moving cover 4 that opens or closes a machining chamber M; a blowout unit including a blowout port 42 that releases gas so as to cover an opening region Op generated when the moving cover 4 is moved from a closed position toward an open position; and a control unit that changes an amount of the gas released from the blowout port 42 according to an opening degree L of the opening region Op.

Abstract: Provided is a machine tool comprising: a coolant release unit 20 that releases a coolant into a machining space M; a moving cover 4 that is movable between an open position where the machining space M is opened and a closed position where the machining space M is closed; and a servomotor 32 that moves the moving cover 4 to the open position or the closed position; and wherein a driving force of the servomotor 32 for moving the moving cover 4 in a direction of the closed position is changed according to a state of the coolant in the machining space M.

Abstract: The present invention provides a film forming material for lithography comprising a compound having: a group of formula (0A): and a group of formula (0B): wherein each R is independently selected from the group consisting of a hydrogen atom and an alkyl group having 1 to 4 carbon atoms, provided that at least one R is an alkyl group having 1 to 4 carbon atoms.

Abstract: A tool holder for a lathe having a spindle permits improved arrangement of tools on a turret to maximize the allowable workpiece outer diameter for a given tool. A Z-axis feed mechanism moves the spindle and the turret relative to each other in a Z-axis direction along a center axis of the spindle, while an X-axis feed mechanism moves the spindle and the turret relative to each other in an X-axis direction orthogonal to the Z-axis direction. A plurality of tool holders is attached to the turret, each having a tool holding part. At least one of the tool holders holds the tool at a holding position such that, when indexed to a machining position by rotation of the turret, a cutting-edge reference point of the tool is offset with respect to an X-Z plane including a center axis of the turret.

Abstract: A hydraulic chuck device includes a cylinder portion operated by pressure oil, a chuck opened and closed by operation of the cylinder portion, a pressure oil supply controlling pressure of pressure oil supplied to the cylinder portion, and a chuck controller controlling the pressure oil supply. When controlling the pressure oil supply to cause a jaw portion to perform a clamping operation, during movement of the jaw portion from an unclamping position to a preliminary position situated before a clamping position, the chuck controller supplies pressure oil set at a first pressure into a cylinder chamber for clamping to move the jaw portion quickly, and during movement of the jaw portion from the preliminary position to the clamping positon, the chuck controller supplies pressure oil set at a second pressure lower than the first pressure into the cylinder chamber for clamping to move the jaw portion slowly.

Abstract: There is provided a method for producing hydroxypivalaldehyde (HPA), including steps (i) to (iii) below in this order, Step (i): a reaction step of reacting IBAL with FA to produce a reaction solution containing HPA, step (ii): an extraction step of extracting the reaction solution with an aldehyde solvent represented by formula (1) under basicity to obtain an extract containing HPA, and step (iii): a distillation and collection step of distilling the extract and then collecting HPA from the residue, wherein R represents a saturated alkyl group having 3 or more and 7 or less carbon atoms, further wherein the distillation step of the step (iii) is a step of distilling an extract in the presence of water, and an amount of the water which is subjected to the distillation is 100 parts by mass or more and 2,000 parts by mass or less with respect to a total amount, 100 parts by mass, of isobutyraldehyde (IBAL) derived from a raw material and an aldehyde solvent represented by formula (1) in an extract

Abstract: The present invention provides a method for producing a diol having a cyclic acetal skeleton, in which the method include an acetalization reaction step of obtaining a diol having a cyclic acetal skeleton by subjecting raw material hydroxypivalaldehyde and at least pentaerythritol and/or trimethylolpropane to an acetalization reaction under an acid catalyst and the raw material hydroxypivalaldehyde can contain a prescribed amount of at least one impurity selected from the group consisting of formaldehyde, neopentyl glycol, an ester compound having a neopentyl glycol skeleton represented by formula (III), and isobutyraldehyde.

Abstract: A lathe includes a spindle, a turret, a Z-axis feed mechanism moving the spindle and the turret relative to each other in a Z-axis direction along a center axis of the spindle, an X-axis feed mechanism moving the spindle and the turret relative to each other in an X-axis direction orthogonal to the Z-axis direction, and a plurality of tool holders each having a tool holding part holding a tool, and attached to the turret. The tool holding part of at least one of the tool holders holds the tool at a holding position thereon set at a position such that, when the held tool is indexed to a machining position by rotation of the turret, a cutting-edge reference point of the held tool is offset to one side with respect to an X-Z plane including a center axis of the turret.

Abstract: The present invention provides a method for producing a diol having a cyclic acetal skeleton, in which the method include an acetalization reaction step of obtaining a diol having a cyclic acetal skeleton by subjecting raw material hydroxypivalaldehyde and at least pentaerythritol and/or trimethylolpropane to an acetalization reaction under an acid catalyst and the raw material hydroxypivalaldehyde can contain a prescribed amount of at least one impurity selected from the group consisting of formaldehyde, neopentyl glycol, an ester compound having a neopentyl glycol skeleton represented by formula (III), and isobutyraldehyde.

Abstract: There is provided a method for producing hydroxypivalaldehyde (HPA), including steps (i) to (iii) below in this order, Step (i): a reaction step of reacting IBAL with FA to produce a reaction solution containing HPA, step (ii): an extraction step of extracting the reaction solution with an aldehyde solvent represented by formula (1) under basicity to obtain an extract containing HPA, and step (iii): a distillation and collection step of distilling the extract and then collecting HPA from the residue, wherein R represents a saturated alkyl group having 3 or more and 7 or less carbon atoms, further wherein the distillation step of the step (iii) is a step of distilling an extract in the presence of water, and an amount of the water which is subjected to the distillation is 100 parts by mass or more and 2,000 parts by mass or less, with respect to a total amount, 100 parts by mass, of isobutyraldehyde (IBAL) derived from a raw material and an aldehyde solvent represented by formula (1) in an extract which is

Abstract: A hydraulic chuck device includes a cylinder portion operated by pressure oil, a chuck opened and closed by operation of the cylinder portion, a pressure oil supply controlling pressure of pressure oil supplied to the cylinder portion, and a chuck controller controlling the pressure oil supply. When controlling the pressure oil supply to cause a jaw portion to perform a clamping operation, during movement of the jaw portion from an unclamping position to a preliminary position situated before a clamping position, the chuck controller supplies pressure oil set at a first pressure into a cylinder chamber for clamping to move the jaw portion quickly, and during movement of the jaw portion from the preliminary position to the clamping positon, the chuck controller supplies pressure oil set at a second pressure lower than the first pressure into the cylinder chamber for clamping to move the jaw portion slowly.

Abstract: To provide a machine tool capable of coping with both a workpiece requiring a small driving force, for example, having good machinability and a workpiece requiring a large driving force, for example, having poor machinability. The machine tool includes a coupling mechanism 9 which couples a first tool post (first tool driving mechanism) 5 and a second tool post (second tool driving mechanism) 6 so that a driving force of the second tool post 6 is added to a driving force of the first tool post 5.

Abstract: The present invention provides a method for concentrating an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof, which includes subjecting a mixed solution of an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof and an azeotropic agent to azeotropic distillation in a distillation column to distil off water and the azeotropic agent from the mixed solution, wherein the mixed solution is prepared by adding, as the azeotropic agent, at least one selected from the group consisting of 1-butanol, 2-butanol, 2-methyl-1-propanol, 1-pentanol and 1-hexanol to the aqueous solution.

Abstract: The present invention provides a method for concentrating an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof, which includes subjecting a mixed solution of an aqueous solution containing at least 3-hydroxy-2,2-dimethyl propanal and/or a dimer thereof and an azeotropic agent to azeotropic distillation in a distillation column to distil off water and the azeotropic agent from the mixed solution, wherein the mixed solution is prepared by adding, as the azeotropic agent, at least one selected from the group consisting of 1-butanol, 2-butanol, 2-methyl-1-propanol, 1-pentanol and 1-hexanol to the aqueous solution.