Abstract: A feed apparatus has a ball screw, a nut, a drive motor, a braking mechanism and a controller and moves a movable body vertically. When recognizing a movement command for rapid traverse relating to the movable body, the controller, when the movable body is to be moved upward, moves the movable body past a target position according to the movement command and then reverses the moving direction thereof and moves the movable body to the target position and stops it there, and, when the movable body is to be moved downward, moves the movable body directly to the target position and stops it there. After moving the movable body to the target position and stopping it there, the controller causes the drive motor to keep the position of the movable body at the stop position and causes the braking mechanism to brake the movement of the movable body.

Abstract: A feed apparatus has a ball screw, a nut, a drive motor, a braking mechanism and a controller and moves a movable body vertically. When recognizing a movement command for rapid traverse relating to the movable body, the controller, when the movable body is to be moved upward, moves the movable body past a target position according to the movement command and then reverses the moving direction thereof and moves the movable body to the target position and stops it there, and, when the movable body is to be moved downward, moves the movable body directly to the target position and stops it there. After moving the movable body to the target position and stopping it there, the controller causes the drive motor to keep the position of the movable body at the stop position and causes the braking mechanism to brake the movement of the movable body.

Abstract: A workpiece measuring apparatus includes a programmable controller which acquires positional data of a measuring head. At the same time that the programmable controller acquires the positional data, a pulse output unit outputs timing pulses. The measuring head measures a workpiece on a machine tool according to a measurement command which is output positively earlier than the timing of predetermined time intervals by a time difference which is preset by a predictive system. As a result, a first time at which the programmable controller acquires the positional data of the measuring head and a second time at which the measuring head measures the workpiece in response to the measurement command synchronize. The workpiece measuring apparatus is capable of measuring the workpiece highly accurately in a three-dimensional space according to a minimum required amount of measured data without the need for modifying an existing NC apparatus combined with the machine tool.

Abstract: A workpiece measuring apparatus includes a programmable controller which acquires positional data of a measuring head. At the same time that the programmable controller acquires the positional data, a pulse output unit outputs timing pulses. The measuring head measures a workpiece on a machine tool according to a measurement command which is output positively earlier than the timing of predetermined time intervals by a time difference which is preset by a predictive system. As a result, a first time at which the programmable controller acquires the positional data of the measuring head and a second time at which the measuring head measures the workpiece in response to the measurement command synchronize. The workpiece measuring apparatus is capable of measuring the workpiece highly accurately in a three-dimensional space according to a minimum required amount of measured data without the need for modifying an existing NC apparatus combined with the machine tool.

Abstract: Provided is a thermosetting powder coating obtained by the following procedure: preparing a suspension by dispersing a resin solution containing an organic solvent into an aqueous solution containing a water-soluble polymer; removing the organic solvent in a dispersed phase from the suspension; solidifying particles in the dispersed phase; and removing the solidified particles in the dispersed phase from the suspension. The thermosetting powder coating is characterized in that the resin solution contains: acrylic resin containing epoxy groups and blocked isocyanate groups; and, as a curing agent, a carboxylic group- or carboxylic anhydride group-containing compound.

Abstract: It is an object of the present invention to provide a powder coating composition, which can exhibit a sufficient hiding power, a corrosion resistance and an excellent appearance and can reduce a coating process and is particularly suitable for coating of an aluminum wheel because of its high low temperature curability and has excellent storage stability, and a coating method of an aluminum wheel using the same. A powder coating composition consisting of a powder coating composition particle, wherein said powder coating composition particle comprises at least a thermosetting resin powder formed by binding a metallic pigment with a binder and said thermosetting resin powder comprises a ?-hydroxyalkylamide curing agent expressed by the following general formula (1): wherein R1 represents a hydrogen atom, a methyl group or an ethyl group, R2 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or HOCH(R1)CH2—, and A represents a bivalent hydrocarbon group.

Abstract: It is an object of the present invention to provide a method of forming multilayer coating films comprising a clear coating film which will not undergo unfavorable changes in appearance, such as yellowing, popping and/or pinhole formation while reducing the load on the environment as well as a multilayer coating film obtained by such method.

Abstract: A thermosetting powder coating composition prepared by a wet process, which contains a mixture comprising (a) an epoxy-containing acrylic resin, (b) a polycarboxylic acid compound curing agent, (c) fine crosslinked resin particles and, optionally, (d) a resin that exists in the liquid form at room temperature.

Abstract: A thermosetting powder coating composition prepared by a wet process, which contains a mixture comprising (a) an epoxy-containing acrylic resin, (b) a polycarboxylic acid compound curing agent, (c) fine crosslinked resin particles and/or (d) a resin that exists in the liquid form at room temperature.

Abstract: A thermosetting powder coating composition prepared by a wet process, which contains a mixture comprising (a) an epoxy-containing acrylic resin, (b) a polycarboxylic acid compound curing agent, (c) fine crosslinked resin particles and/or (d) a resin that exists in the liquid form at room temperature.

Abstract: The present invention provides a method for producing N-acyl carbamate in high yield. The method of the present invention comprises the step of reacting an unsaturated acid halide with a carbamate in the presence of a hindered amine. Another method of the present invention comprises the step of reacting a N,N-diacyl carbamate with an active hydrogen compound.

Abstract: The present invention provides a novel polyacylurethane, and a process for producing the same. More specifically, the polyacylurethane has a number average molecular weight of 500 to 100,000, and the main chain of said polyacylurethane comprises repeating units of the formula: ##STR1## where R.sub.1 represents an alkylene group or an alkenylene group having a molecular weight of 28 to 30,000, which may contain an alicylcic group, an aromatic group and/or an oxygen atom; and R.sub.2 represents an alkylene group, an arylene group or an alkenylene group having 1 to 8 carbon atoms.

Abstract: The present invention provides the compound containing one hydroxyl group and one acyl carbamate group per molecule, which is useful for introducing the acyl carbamate group in chemical materials. By employing the present compound, it becomes possible to introduce the acyl carbamate group in various chemical materials other than acrylic polymers. According to the present process, the compound containing one hydroxyl group and one acyl carbamate group per molecule is provided in excellent yield with a suppressed amount of by-product.