Abstract: In order to make it easy to change the size of a cam device in the course of press mold design, there is provided a cam device including: a cam holder; a cam slider; and a cam driver, wherein the cam devices are grouped depending on the basis of width dimensions in combination of hardness of a sliding contact surface of the cam holder and a sliding contact surface on the cam slider end, and hardness of a cam surface of the cam driver and a cam surface of the cam slider, and the design structures of the respective groups are determined in such a manner that the maximum process ability in a certain group among the groups is larger than the minimum process ability of an adjacent group having a larger width dimension, and smaller than the maximum process ability in an adjacent group having a smaller width dimension.

Abstract: There is provided a method of designing and manufacturing a cam device using a three-dimensional design-support computer program including a customer setup program for customers and a manufacture setup program for cam device manufactures being configured to generate different finenesses in 3D models and characteristic values of cam performance as a result of design of the cam device, and being configured to obtain a result which indicates the same cam device except for fineness and the required calculation items when the same parameters are loaded. The customer setup program is lent from the cam device manufacture to the customer, and detailed design to constructional details of the cam device is performed using the manufacture setup program on the basis of design data created using the customer setup program and handed to the cam device manufacturer, whereby the cam device is manufactured on the basis of a detailed design drawing.

Abstract: In order to provide a cam slider shock absorbing member for a cam device which realizes a sufficient stroke, easy replacement, a compact profile, and an easy-to-machine property without necessity of adhesive agent, the shock absorbing member includes a mounting portion having an external dimension at least larger than an internal dimension of a mounting hole on the side of a lower end thereof and a deflecting portion having a predetermined distance for a deflecting margin with respect to an inner wall surface of the mounting hole on the upper side of the mounting portion, and an upper end of the deflecting portion projects upward from an opening end of the mounting hole and being formed to have a height which secures a length corresponding to the stroke to be compressed.

Abstract: To facilitate aligning and setting of a punch in a die of a press machine, a module cam assembly comprises a cam unit and an L-shaped module base. The cam unit comprises a cam driver, a cam slider equipped with a positive return to be driven by the cam driver, and a cam base holding the cam slider. The cam slider has a punch retainer on its vertical side. The L-shaped module base bears the cam unit, and is adapted to be fastened to the lower die holder. The L-shaped module base has a button die on its vertical leg in confronting relation with the punch retainer of the cam slider. This arrangement facilitates the centering and fastening of any tool to the press machine.

Abstract: Disclosed is an improved cam slider in a cam unit to be fixed to a stationary metal mold tool and a movable metal mold tool for machining a pressed product. The cam slider is equipped with a resilient member to allow the cam slider to return to its original position subsequent to the cam action and a counter member to the resilient member.

Abstract: Disclosed is an improvement in a cam assembly for use in a pressing machine having a lower cam to be fixed to the base of the pressing machine, a spring-biased sliding cam whose front surface is allotted to fix a machining tool and a cam holder to be fixed to the upper frame of the pressing machine. The sliding cam is operatively combined with the lower cam to slide on the inclined surface of the lower cam synchronously with the rising and descending of the upper frame of the pressing machine, whereas the cam holder and the sliding cam is so combined as to leave a predetermined space defined therebetween, thereby permitting the sliding cam to be slidably held in the cam holder. The cam assembly further has a spacer to be inserted in the predetermined space and detachable fastening means to fix the sliding cam to the cam holder as if the slider were like with the upper frame of the pressing machine staying at its lower dead end.

Abstract: A programmable controlled turnblanking machine comprising a blanking apparatus having a pair of blank dies each provided with a cutting edge and disposed in a strip feed direction on a bed to cut out blanks of predetermined shape and size from a strip by means of the cutting edges of the blank dies, one of the blank dies being disposed in front in the strip feed direction and preventing from sliding in the strip feed direction, and the other blank disposed in the rear in the strip feed direction so as to be slidable on the bed in the same direction, both blanked dies being rotatably supported on the bed; a teaching unit for inputting a slide distance X of the rear blank die as well as rotational angles .theta..sub.1 and .theta..sub.

Abstract: A resin injection metal mold unit comprising, in combination, a metal mold consisting of a cavity section and a core section, and stationary and movable metal mold supporting members for releasably holding the metal mold sections in the opposing relationship. Each supporting member has a plurality of clamping members for engaging an associated mold section. Each clamping member has a clamping slant in the complementary relationship with the counter slant chamfer of the mold section. Such members are slidably attached to an associated supporting member so as to move close and apart from the mold section. When a mold section is fixed to an associated supporting member, the clamping members are brought in contact with the mold section with their clamping slants closely fitting the counter chamfer slants of the mold section, and then clamping members are fixed to the supporting member by driving associated bolts, thereby pushing and holding the mold section against the supporting member.

Abstract: A process for producing a hollow cast product in which a hollow flexible mandrel is placed into the crucible of a mold with one end of the mandrel extending out of the mold, molten metal is introduced into the mold crucible and left to solidify in the crucible and the mandrel is removed from the mold to thereby form a hollow cast product having a bore which has the smooth or concavo-convex peripheral surface and is straight, bent or meandering.

Abstract: A self-lubricated solid material comprising a metallic matrix having a lubricated surface, a plurality of circular cavities provided in the lubricating surface of the metallic matrix, a solid lubricant embedded in each of the circular cavities, and the circular cavities being disposed in the relation ofR < P < R/cos .theta., when O.degree. < .theta. .ltoreq. 45.degree., and R < P < R/sin .theta., when 45.degree. .ltoreq. .theta. < 90.degree.where R is the diameter of each of the circular cavities, P is the distance between the centers of adjacent two circular cavities and .theta. is the angle defined between a predetermined direction and the line lying on the centers of the two circular cavities.