A method of cold forming an outer arm of a rocker arm assembly in a cold forming machine includes providing a slug having a first end and a second end, extruding the slug at the first end to establish two different widths of the slug, compressing the slug to form an upper angled surface and a lower angled surface at the second end, and compressing the slug to form an inner arm window defined by a pair of side walls and a pair of end walls.

The present disclosure discloses a cutting method for an aluminum alloy casting, and a trimming die. The cutting method for the aluminum alloy casting includes the following steps of: drilling a part to be cut off of the aluminum alloy casting by multiple annular drills, and withdrawing the annular drills when the annular drills drill to a preset position; and separating multiple scraps to be separated from the aluminum alloy casting by the trimming die.

An electrical connection member (1, 301, 401, 501, 601) includes a clad material (10, 110, 610) including at least both a first Cu layer (12) made of a Cu material and a low thermal expansion layer (11) made of an Fe material or Ni material having an average thermal expansion coefficient from room temperature to 300° C. smaller than that of the first Cu layer, the first Cu layer and the low thermal expansion layer being bonded to each other.

The present disclosure discloses a cutting method for an aluminum alloy casting, and a trimming die. The cutting method for the aluminum alloy casting includes the following steps of: drilling a part to be cut off of the aluminum alloy casting by multiple annular drills, and withdrawing the annular drills when the annular drills drill to a preset position; and separating multiple scraps to be separated from the aluminum alloy casting by the trimming die.

A method for cutting a cast strand or intermediate strip using shears. In order to facilitate improved rolling of the section having significantly reduced thickness, the method according has the following steps: a) bringing part of the completely solidified cast strand or intermediate strip in the conveying direction (F) of the cast strand or intermediate strip in front of the shears; b) placing a first blade of the shears onto the one surface of the cast strand or intermediate strip and placing a second blade of the shears onto the other surface of the cast strand or intermediate strip and performing a cut by carrying out a relative movement of the two blades, wherein at least one of the blades is in a pushed-forward position; c) upset forging or upset forging with stamping a wedge-shaped contour on the end of the cast strand.

A forging and inclined window hole punching composite die includes an upper die holder, a connection sleeve, an upper die sliding sleeve, a pressure plate, inclined window puncher pins, a center puncher pin, first connection screw rods, first springs, second connection screw rods, second springs, hydraulic assistant systems, a lower die and a bottom plate. Bottom surface of the pressure plate of the composite die is a plane to avoid deformation of a front molding surface. Hydraulic power is added to the inclined window puncher pins to increase the pressure for punching inclined holes, avoid quality problems and increase a demolding force. A multi-split synchronous hydraulic device may well realize synchronization of the plurality of inclined window puncher pins.

An annular reference surface is formed around a through-hole of an eye portion. A distal-end-side curved portion is formed at a first corner portion, on an outer side of the annular reference surface. The thickness of the distal-end-side curved portion is reduced in a range of a length from the first flat surface toward the distal end surface. A hole-side curved portion whose thickness is reduced toward an inner surface of the through-hole is formed at a second corner portion, on an inner side of the annular reference surface. The length of the hole-side curved portion is less than the length of the distal-end-side curved portion. The hole-side curved portion is curved with a greater curvature than that of the distal-end-side curved portion.

A method for cutting a metal plate, a method for manufacturing a metal product, and the metal product are provided which enable the formation of cracks to be suppressed even with application of external force and enable strength of a product to be increased. A method for cutting a metal plate 2 of one aspect according to the present invention includes a crushing step and a separation step. The crushing step is a step of crushing a removal target part 22 of the metal plate 2 in a thickness direction of the metal plate 2 by applying, to the removal target part 22, force from both sides in the thickness direction so as to deform the removal target part 22 into a thin-walled part 23. The separation step is a step of separating, after crushing step, the thin-walled part 23 from a body 21 of the metal plate 2.

Embodiments may include systems and methods for manufacturing a probe for wafer sorting or die testing. A probe for wafer sorting or die testing may include a probe body and a probe tip. The probe body may include a probe core and a probe plating layer around the probe core. The probe core may include a first material, and the probe plating layer may include a second material. The probe tip may be next to the probe core of the probe body and may include the first material. In addition, the probe tip may have an end surface that is smaller than a surface of the probe core, and larger than a single point. A probe-manufacturing device may include a forging unit, a clipping unit, and an actuation mechanism to control the forging unit and the clipping unit. Other embodiments may be described and/or claimed.

An improved forged wheel trimming die, including a connecting rod, a lower die base lower plate, a bottom plate, a stripper guide pillar, a knockout rod, an ejector block, a lower die base stiffened plate, a lower die base upper plate, a lower die, a stripper plate, follow-up retainer plates, a shearing blade and a trimming rod. The improved forged wheel trimming die has the advantages that by adding two follow-up retainer plates to the stripper plate of the die, burrs of a forged wheel blank are constrained along the radial direction during the cutting, thereby avoiding breakage due to excessive deformation; in this way, the burrs can be protected from damage and knocked out successfully by the knockout rod after being cut off from the blank.