An apparatus and method for abrasive flow machining the orifice (18) of a workpiece (20) by using an abrasive media (15) whereby the apparatus (10) is capable of passing media (15) through the orifice (18) at a predetermined pressure and at a constant flow rate. In the alternative, the apparatus (10) is capable of passing media (15) through the orifice (18) at a fixed flow rate by using variable pressure upon the media (15) through the orifice (18).

Abrasive flow machining apparatus and method

The invention concerns an electrode wire comprising an unalloyed copper core (16) coated with a diffused zinc alloy coating layer (17), whereof the thickness (E) is more than 10 % of the wire diameter. The coating layer (17) is optionally plated with a thin zinc, copper, nickel, silver or gold surface contact film (21). Such a wire achieves higher electrical discharge machining speed

Wire for high-speed electrical discharge machining

A method of treating an interior surface of a workpiece (5); said method comprising • providing a workpiece (5) having an interior passage (11) defined at least partly by said interior surface to be treated, said passage (11) having an inlet section and an outlet section; • providing in said interior passage (11) at least one deflecting object (6), said deflecting object (6) having an outer surface, whereby a space is formed between said outer surface of said at least one deflecting object (6) and said interior surface of said workpiece (5); • providing an abrasive fluid (3) in said space, such that said space is substantially filled with said abrasive fluid (3); and • effecting flow of said abrasive medium (3) through said interior passage (11) from said inlet portion to said outlet portion.

Arrangements and methods for abrasive flow machining

A method and apparatus is presented. A structure having an interior channel is formed using additive manufacturing equipment. A viscous media containing abrasive particles is sent through the interior channel using abrasive flow machining equipment to form a desired surface roughness for the interior channel.

Additive manufacturing for radio frequency hardware

[PROBLEM TO BE SOLVED] To provide an electrode wire for electric discharge machining capable of suppressing drop of tensile strength even when electric discharge energy is increased, capable of improving cutting accuracy of a workpiece, and capable of improving the machining speed. [SOLUTION] In an electrode wire for electric discharge machining, a stainless steel wire is made a core wire, nickel (Ni) is coated on an outer periphery of the core wire, and copper (Cu) and zinc (Zn) are coated in this order. Preferably, the thickness of the nickel (Ni) is 0.01 to 2.0 µm, the tensile strength of the electrode wire at an ordinary temperature is 1,900 to 3,200 N/mm2, the tensile strength of the electrode wire at 400°C is 70% or more of the tensile strength at the ordinary temperature, an outside diameter Φ of across section of the electrode wire after drawing work is 0.03 mm to 0.1 mm, heat treatment of alloying the copper (Cu) and the zinc (Zn) is performed, and straightening work is performed by hot stretching work.

Electrode wire for electrical discharge machining

PURPOSE:To improve the extent of polishing speed and accuracy by reciprocating a fluidic abradant on a polished surface as rotating relatively with this surface. CONSTITUTION:A fluidic abradant 5 filled up in a pressure body 6 on one side passes through a polished surface of a workpiece 1 held in space between holders 4 by a pressurizing means 10, and then it flows into the pressure body 6 on the other. When preset pressurization is carried out by a control means 11, the fluidic abradant 5 shifted to the pressure body 6 on the other flows into the first pressure body by the pressurizing means 10. With a series of operations repeated, the fluidic abradant 5 reciprocates whereby abrasive operation on the polished surface is thus performed in succession. In addition, since the fluidic abradant 5 relatively rotates with the polished surface, at time of the abradant 5 flowing, a flowing direction of the abradant 5 will not come to a direction going along a vertical grinding line turned up on the polished surface 1 but come to a crossing direction. Consequently, the extent of polishing speed and accuracy is improved.

Workpiece polishing method and device

PROBLEM TO BE SOLVED: To reduce manufacturing costs for an electrode wire and maintenance costs for a discharge machining tool by using an electrode wire having a relatively high tensile strength, made of a stainless steel small in diameter and having small electric conductivity and improving the machining accuracy of an article to be machined without performing surface grinding after discharge machining. SOLUTION: An electrode wire is made of a stainless steel having a tensile strength of 200 to 300kgf/mm and a wire diameter of 0.05 to 0.20mm, its electric conductivity is low being set to 1 to 3% and thus, the tension of a wire is increased three times as high as that of a brass wire during discharge machining and the vibration of the electrode wire caused by explosion during discharging is reduced. Also, since discharging energy is controlled, a discharge gap is reduced and the surface roughness of a machined surface and machining accuracy are greatly improved. Further, since the electric conductivity is small, influence on machining accuracy and surface roughness is small even when the specific resistance of machining liquid is small. Thus, the management of the specific resistance during an operation is facilitated and maintenance costs including an ion exchange resin or the like are reduced.

Electrode wire for wire electric discharge machining

PROBLEM TO BE SOLVED: To provide a stranded wire conductor in which flexibility is improved, which can be easily taken around during wiring, and in which working time required for wiring is shortened and further, a terminal-side connection destination damage or unfastening can be prevented, and a method of manufacturing the stranded wire conductor.SOLUTION: A compression stranded wire conductor 1 is configured with the inside thereof as a rear annealing part 2 and the outside thereof as a front annealing part 3. The rear annealing part 2 is a conductor portion configured by stranding an element wire 4 into a plurality of layers and applying annealing thereto. On the other hand, the front annealing part 3 is one or more layered conductor portions configured by applying annealing to the element wire 4 prior to stranding. Such a compression stranded wire conductor 1 is manufactured by including a rear annealing part forming step S1 of forming the rear annealing part 2 and a front annealing part forming step S2 of forming the front annealing part 3.

Stranded wire conductor and method of manufacturing the same

PURPOSE:To provide a wire drawing die of good quality by forming the die approach part with taper, forming grooves in the bearing part, lapping the grooves in the die approach part, and thereby stabilizing the dimensional accuracy. CONSTITUTION:A wire is threaded in a preparatory hole for a work die 1, followed by electric discharge processing, and the die approach part 6 is processed into tapered form. The bearing part 7 is processed into parallel form, and then the sides of the flat wire configuration 8 are provided with grooves 9 at both corners, and thereby a flat configuration 10 with grooves is provided. Further, the die approach part 6 tapered into the flat wire configuration 8 is tape punch processed using a taper punch 11, and grooves 9 are processed at the corners of the die approach part 6. To perform this taper punch processing, the taper punch 11 is pressed to the beginning part of the die approach part 6 while ultrasonic vibration is applied to the punch 11, and lapping is performed under feeding abrasives to the contact part of these two members.

Manufacture of drawing dice for flat wire with groove

PROBLEM TO BE SOLVED: To produce a fake plant capable of allowing the position of a branch thereof to be changed according to liking and excellent in flexibility and snapping resistance by forming a trunk part, etc, by plural metal stranded wires and forming a shape resembled to a leaf, etc, by a wire of loosened part of the tip part, etc, of the stranded wire SOLUTION: This fake plant 7 is constituted of a trunk 3, branches 4 and 5, roots 6 and stems composed of plural metal stranded wire obtained by stranding plural metal wires of iron (alloy), copper (alloy), aluminum (alloy), etc, having 010-040mm diameter Further, the fake plant 7 has shapes resembled to leaves, leaf veins, flowers, petals, etc, formed by loosening tip parts or middle parts of the metal stranded wires forming the branches 4 and 5, winding the metal wires of the loosened parts to form loop shapes, fixing the crossing points of the loop shapes and forming the metal wires forming loops into the shapes resembled to the leaves, the leaf veins, the flowers 8, the petals, etc A surface treatment such as plating, coloring, glazing, matting, coating of luminous paint is preferably applied to one or more metal wires

Usui Yasuo

Papers

Workpiece polishing method and device

Electrode wire for wire electric discharge machining

Stranded wire conductor and method of manufacturing the same

Manufacture of drawing dice for flat wire with groove

Fake plant and its production