Abstract: A metal laminate includes a lamination of a first metal plate and a second metal plate. The first metal plate includes a caulking that exhibits a mountain shape protruding from a back surface side and recessed on a front surface side, and the second metal plate includes an accommodating portion configured to accommodate the caulking such that the caulking is fitted to the accommodating portion. The caulking includes a recessed portion provided on an inner concave surface of the caulking and recessed toward the back surface side of the first metal plate, and an abutting portion provided on an outer convex surface of the caulking and abutted against an inner surface of the accommodating portion at a position corresponding to the recessed portion. The abutting portion expands laterally from the outer convex surface toward the inner surface of the accommodating portion.

Abstract: A method of punching a core piece having a bridge formed between a radially-outer end of a magnet insertion hole and an outer region of the core piece. The method includes providing a magnetic steel sheet and a punch configured to form the core piece, punching out the magnet insertion hole from the magnetic steel sheet, and forming a through hole that defines a radially-outer contour of the bridge by punching the magnetic steel sheet. The method includes forming the bridge between the radially-outer end of magnet insertion hole and the outer region of the core piece, and blanking the core piece, from the magnetic steel sheet, in an exterior shape with the punch while avoiding an edge of the punch from coinciding with the radially-outer contour of the bridge.

Abstract: At least one caulking group (13) that includes a plurality of caulking parts (14, 15) with different directions is formed on a plurality of thin plates (10) placed in a stacked state to fix the position of the stacked thin plates (10), and then a preset punching process is performed with respect to the thin plates (10) that have been positioned with pilot holes (12). This makes it possible to perform a high-accuracy punching process when punching the plurality of thin plates (10) placed in a stacked state, since positional deviations between the thin plates (10) are avoided and pilot pins (11) are prevented from deforming the periphery of the pilot holes (12).

Abstract: A laminated iron core is made of a stator iron core formed by laminating a plurality of iron core pieces with a predetermined shape, and a caulking block detachable along a radial direction is formed in each of the iron core pieces. In a method for manufacturing the laminated iron core, the caulking block detachable along the radial direction is provided in each of the iron core pieces, and the iron core pieces are laminated and joined through the caulking blocks and are arranged on a jig and then, the caulking blocks are pulled in the radial direction and are detached from the laminated iron core pieces, and the laminated iron core pieces are joined by a resin.

Abstract: A metal laminate includes a lamination of a first metal plate and a second metal plate. The first metal plate includes a caulking that exhibits a mountain shape protruding from a back surface side and recessed on a front surface side, and the second metal plate includes an accommodating portion configured to accommodate the caulking such that the caulking is fitted to the accommodating portion. The caulking includes a recessed portion provided on an inner concave surface of the caulking and recessed toward the back surface side of the first metal plate, and an abutting portion provided on an outer convex surface of the caulking and abutted against an inner surface of the accommodating portion at a position corresponding to the recessed portion. The abutting portion expands laterally from the outer convex surface toward the inner surface of the accommodating portion.

Abstract: A work vehicle includes a riding-type traveling vehicle body and a hydraulically operable front loader coupled to a front of the traveling vehicle body. The traveling vehicle body includes left and right rear wheels disposed to the left and right of a driver seat, left and right rear fenders covering the left and right rear wheels, a valve unit for the front loader and an operating lever for the front loader. The valve unit is disposed in a space between the rear wheel and the rear fender on one of left and right sides, and the operating lever extends from the space, upward of the rear fender on the one of the left and right sides.

Abstract: In a cross sectional plane perpendicular to a center axis line of an annular core, a connection projection and a connection recess have complementary configurations in which the connection projection and the connection recess are narrowed in width with distance from coupling surfaces, the connection projection and the connection recess respectively include a pair of friction surfaces and a pair of friction surfaces extending in a direction separate from the coupling surfaces, the friction surface of the connection projection is inclined relative to a virtual normal line perpendicular to a line connecting bottom portions of the pair of friction surfaces of the connection projection, and the friction surface of the connection recess is inclined relative to a virtual normal line perpendicular to a line connecting bottom portions of the pair of friction surfaces of the connection recess.

Abstract: A tractor includes an engine that is mounted on a vehicle body frame, a hood that houses the engine and is configured to pivot about a front pivot in a top-bottom direction between a closed position at which the hood covers the engine, and an open position at which the hood exposes the engine, a mounting rubber that is provided between the engine and the vehicle body frame to support the engine in an anti-vibration manner, and a hood stay that supports the hood such that the hood is pivotable up/down about the front pivot. The hood stay includes an abutting-target portion against which the engine can abut from a rear side, to prevent the engine from swinging forward in a front-rear direction of the vehicle body.

Abstract: A method for manufacturing a segmented laminated core is provided. This method includes (A) feeding a metal sheet to a progressive die, (B) stamping out workpieces in the progressive die, workpieces each include a plurality of pieces aligned in the circumferential direction with a circumferential part, and (C) fastening the workpieces together to obtain a segmented laminated core. The step (B) includes (b1) performing cutting-and-bending processing to form a slit line and a bending line across a region configured to be the circumferential part, (b2) returning by push-back a bent part that is a portion between the slit line and the bending line to an original position, and (b3) forming a swaged portion on the bent part. The step (C) includes (c1) fastening the workpieces by the swaged portion.

Abstract: This disclosure relates to a method for manufacturing a workpiece for a segmented laminated core. This method includes (A) feeding a plate for processing drawn from a roll thereof to a progressive die and (B) stamping out a workpiece in the progressive die, the workpiece including a plurality of pieces aligned in the circumferential direction with a circumferential part. At the step (B), an overall portion configured to be each piece of the workpiece is displaced in the thickness direction of the plate for processing, with portions on both sides of the piece being fixed, to form at least one cutting line across a region configured to be the circumferential part.

Abstract: A work vehicle includes a front control tower provided forwardly of a driver's seat, a battery accommodated inside the front control tower, and a bottom member that provides a bottom of the front control tower. The battery is mounted on the bottom member.

Abstract: A die apparatus includes an upper die and a lower die used for blanking a thin plate, a stripper which is formed on the upper die and is arranged between the upper die and the lower die, and a punch which blanks a part of the thin plate. The stripper or the lower die is provided with a protruding part which reduces flexure of the stripper occurring when a test punching is performed by actuating the punch without the thin plate.

Abstract: At least one caulking group (13) that includes a plurality of caulking parts (14, 15) with different directions is formed on a plurality of thin plates (10) placed in a stacked state to fix the position of the stacked thin plates (10), and then a preset punching process is performed with respect to the thin plates (10) that have been positioned with pilot holes (12). This makes it possible to perform a high-accuracy punching process when punching the plurality of thin plates (10) placed in a stacked state, since positional deviations between the thin plates (10) are avoided and pilot pins (11) are prevented from deforming the periphery of the pilot holes (12).

Abstract: A laminated iron core is made of a stator iron core formed by laminating a plurality of iron core pieces with a predetermined shape, and a caulking block detachable along a radial direction is formed in each of the iron core pieces. In a method for manufacturing the laminated iron core, the caulking block detachable along the radial direction is provided in each of the iron core pieces, and the iron core pieces are laminated and joined through the caulking blocks and are arranged on a jig and then, the caulking blocks are pulled in the radial direction and are detached from the laminated iron core pieces, and the laminated iron core pieces are joined by a resin.

Abstract: A method for manufacturing a laminate used for manufacturing a rotor is provided. The method includes: (a) stamping out a plurality of workpieces from a metal sheet wherein each of the workpieces has a temporarily-interlocking portion; and (b) obtaining a laminate including the workpieces integrated together by the temporarily-interlocking portion, wherein each of the workpieces further has a shaft hole, a magnet insertion hole, and a weight-reducing hole formed between the shaft hole and the magnet insertion hole, and the temporarily-interlocking portion is provided to the weight-reducing hole.

Abstract: A method for forming a blanked piece from a material, where the blanked piece includes a production area having a through hole and at least one caulking and connection area protruding inside the through hole. The method includes forming a blanking hole in the material in a prescribed outline, placing a guide member in the through hole, where the guide member has an abutting part contacting a protrusion of the material formed along the outline of the blanking hole. The method further includes cutting and separating the material to blank or stamp out downward the caulking and connection area, pushing back the caulking and connection area, and temporarily connecting the caulking and connection area to the material; and blanking or stamping an outer configuration of the product area from the material to which the caulking and connection area is temporarily connected.

Abstract: This disclosure relates to a method for manufacturing a laminate used for manufacturing a laminated core including a circumferential yoke part and a plurality of magnetic pole parts radially extending from the yoke part. This method includes: feeding a metal sheet drawn from a roll thereof to a progressive die; stamping out a plurality of workpieces from the metal sheet in the progressive die, wherein each of the workpiece comprises a temporarily-interlocking portion between adjacent magnetic pole portions; and stacking the workpieces to integrate these workpieces together by the temporarily-interlocking portion to obtain the laminate.

Abstract: A work vehicle includes a prime mover unit disposed in a front part of the vehicle body, a driving part located in a rear part of the vehicle body, a battery disposed between the prime mover unit and the driving part, a base frame disposed in a lower part of the vehicle body and a center pillar that extends upward from the base frame. The prime mover unit includes a radiator disposed immediately forward of the center pillar.

Abstract: In a cross sectional plane perpendicular to a center axis line of an annular core, a connection projection and a connection recess have complementary configurations in which the connection projection and the connection recess are narrowed in width with distance from coupling surfaces, the connection projection and the connection recess respectively include a pair of friction surfaces and a pair of friction surfaces extending in a direction separate from the coupling surfaces, the friction surface of the connection projection is inclined relative to a virtual normal line perpendicular to a line connecting bottom portions of the pair of friction surfaces of the connection projection, and the friction surface of the connection recess is inclined relative to a virtual normal line perpendicular to a line connecting bottom portions of the pair of friction surfaces of the connection recess.

Abstract: A stacked core includes a plurality of core pieces that are arranged in a stack. Each of the core pieces has a plurality of magnet insertion holes. A bridge is provided between a radially-outer end of each of the magnet insertion holes and an outer region of each of the core pieces, A radially-outer contour of the bridge is provided on a radially-inner side of a blanking-contour line of each of the core pieces.