A method of manufacturing a punch, such as a socket punch, using wire EDM with at least six steps. The method involves forming a blank, holding the blank with an adapter, machining grooves in the blank, manufacturing a side relief of a working portion using wire EDM, milling the working portion to a final size, and forming a cone point on the end of the working portion. The method allows the punch to be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A method of manufacturing a punch, such as a socket punch, using wire EDM with at least six steps. The method involves forming a blank, holding the blank with an adapter, machining grooves in the blank, manufacturing a side relief of a working portion using wire EDM, milling the working portion to a final size, and forming a cone point on the end of the working portion. The method allows the punch to be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A method for making a socket and a pawl of a ratchet wrench includes a step of preparing: preparing a socket and a pawl; a step of first treatment: making the socket to have a body, a reinforcement portion and a driving hole, the driving hole defined axially through the body and having an axis, multiple ridges extending axially and inward from the inner periphery of the driving hole, the body having outer teeth formed on the outer periphery thereof, the reinforcement portion being an annular portion and formed along one of two ends of the body, the socket being treated by way of forging, the pawl having a toothed portion and a recess, the toothed portion engaged with the outer teeth of the socket, the pawl being made by way of metal injection molding, and a step of secondary treatment: polishing the socket and the pawl.

A method for making a socket and a pawl of a ratchet wrench includes a step of preparing: preparing a socket and a pawl; a step of first treatment: making the socket to have a body, a reinforcement portion and a driving hole, the driving hole defined axially through the body and having an axis, multiple ridges extending axially and inward from the inner periphery of the driving hole, the body having outer teeth formed on the outer periphery thereof, the reinforcement portion being an annular portion and formed along one of two ends of the body, the socket being treated by way of forging, the pawl having a toothed portion and a recess, the toothed portion engaged with the outer teeth of the socket, the pawl being made by way of metal injection molding, and a step of secondary treatment: polishing the socket and the pawl.

A tool manufacturing method includes the steps of preparing a cylindrical blank, dividing the blank into sections, changing an outer diameter of one of the sections, and shaping the sections to complete a tool. During the shaping step, the section whose outer diameter is changed is shaped into a symmetrical polygon for serving as a head portion of the tool and shaping another section to obtain a polygon with alternate concavities and convexities thereon for serving as an engaging portion of the tool. Accordingly, the progressive execution of the method prevents the deterioration of the blank made of a high carbon content metal material, allows the tool to keep good mechanical properties, increases the manufacturing efficiency, and reduces manufacturing costs.

A tool manufacturing method includes the steps of preparing a cylindrical blank, dividing the blank into sections, changing an outer diameter of one of the sections, and shaping the sections to complete a tool. During the shaping step, the section whose outer diameter is changed is shaped into a symmetrical polygon for serving as a head portion of the tool and shaping another section to obtain a polygon with alternate concavities and convexities thereon for serving as an engaging portion of the tool. Accordingly, the progressive execution of the method prevents the deterioration of the blank made of a high carbon content metal material, allows the tool to keep good mechanical properties, increases the manufacturing efficiency, and reduces manufacturing costs.

A method of manufacturing a punch, such as a socket punch, using wire EDM with at least six steps. The method involves forming a blank, holding the blank with an adapter, machining grooves in the blank, manufacturing a side relief of a working portion using wire EDM, milling the working portion to a final size, and forming a cone point on the end of the working portion. The method allows the punch to be manufactured more quickly and from a CAD model, therefore removing the need for over-specialized equipment and improving manufacturing times.

A forging device for molten metal includes first and second die bodies that are linked by first and second power arms to move back and forth in a cavity of a die base so as to open and close a workpiece shaping space defined between first and second die faces of the first and second die bodies. When the workpiece shaping space is opened, a molten metal is poured, and then the workpiece shaping space is closed to cast a semi-finished workpiece. After that, the first and second power arms axially press and forge the semi-finished workpiece in the workpiece shaping space into a high-strength workpiece. The high-strength workpiece is shaped by casting and forging in the same process.

A tool manufacturing method includes the steps of preparing a cylindrical blank, dividing the blank into sections, changing an outer diameter of one of the sections, and shaping the sections to complete a tool. During the shaping step, the section whose outer diameter is changed is shaped into a symmetrical polygon for serving as a head portion of the tool and shaping another section to obtain a polygon with alternate concavities and convexities thereon for serving as an engaging portion of the tool. Accordingly, the progressive execution of the method prevents the deterioration of the blank made of a high carbon content metal material, allows the tool to keep good mechanical properties, increases the manufacturing efficiency, and reduces manufacturing costs.

A tool manufacturing method includes the steps of preparing a cylindrical blank, dividing the blank into sections, changing an outer diameter of one of the sections, and shaping the sections to complete a tool. During the shaping step, the section whose outer diameter is changed is shaped into a symmetrical polygon for serving as a head portion of the tool and shaping another section to obtain a polygon with alternate concavities and convexities thereon for serving as an engaging portion of the tool. Accordingly, the progressive execution of the method prevents the deterioration of the blank made of a high carbon content metal material, allows the tool to keep good mechanical properties, increases the manufacturing efficiency, and reduces manufacturing costs.