Abstract

Provided is a method for manufacturing a helical carrier molded product for a full-automatic parking brake system by using cold forging, the helical carrier molded product manufactured through: a first blank manufacturing step (S110) of manufacturing a first cylindrical blank (B1); a forging preparation step (S120) of annealing the first blank (B1) and bonderizing the annealed blank with a coating agent included in phosphate; a first molded product manufacturing step (S130) of pressing the first blank (B1) by a forging mold, so as to manufacture a first molded product (S1) having a first gear-forming part (1) and a spline-forming part (3) formed to be thinner than the first gear-forming part (1) at one side of the first gear-forming part (1); and a step (S140) of manufacturing a final-molded product (S2), by using the first molded product (S1) and a first forging mold (100) composed of a first upper punch part (110) and a first lower die part (120), so as to mold a helical gear part (1a) by forming helical gear teeth on the first gear-forming part (1) and mold a spline shaft part (3a) by forming protrusions and recesses on the spline-forming part (3).

IPC Classes  ?

• B21K 1/76 - Making machine elements elements not mentioned in one of the preceding groups
• B21J 5/02 - Die forgingTrimming by making use of special dies
• B21J 9/02 - Special design or construction

Abstract

Disclosed are a method and an apparatus for manufacturing a boss for a vehicle engine fuel rail. The method for manufacturing a boss for a vehicle engine fuel rail by cold forging comprises: a cutting step (S10) for manufacturing a first molded body (S1) having a cylindrical shape by cutting a round steel rod (1); a first forging step (S20) for molding a second molded body (S2) with front and back flat parts (3) and upper and lower convex curved parts (5, 6) formed by pressing the periphery of the cut cylindrical body (S1); a softening heat treatment step (S30) for softening the second molded body (S2) by annealing heat treatment; a second molded body coating step (S40) for coating the softening heat-treated second molded body (S2) with a coating agent; a second forging step (S50) for press forging the second molded body (S2) which has undergone the second molded body coating step (S40) into a third molded body (S3) having a rounding groove part (8) for coupling a fuel rail body part, using a forging die consisting of an upper punch part (100) and a lower die part (200); and a finishing step (S60) for processing a surface by sandblasting the third molded body (S3).

IPC Classes  ?

• B21K 21/00 - Making hollow articles not covered by any single one of groups
• B21J 9/02 - Special design or construction

Abstract

A method for producing an oil filter cover for heavy equipment by means of cold forging, the method comprising: a blank producing step (S10) for producing a cylindrical aluminum blank (B) which is an ordinary body part (1) having a protruding wing part (3) on both sides thereof; a forging preparation step (S20) for annealing the blank (B) to soften same, and coating the annealed blank (B) with a coating agent (C); a primary cold forging step (S30) for molding, by means of a forging mold (100) comprising a first upper punch part (110) and a first lower die part (120), the blank (B) which has passed through the blank coating step (S30) into a first shaped body (S1) having a first hollow part (11) in the center of one side on which first wing parts (13) are located, and a first body part (15) on the other side; a primary boring step (S40) for forming a second shaped body (S2) provided with a second hollow groove (21) by machining the first hollow part (11) of the first shaped body (S1) so as to be wider and deeper; a secondary cold forging step (S50) for molding, by means of a second forging mold (200) comprising a second upper punch part (210) and a second lower die part (220), the second shaped body (S2) which has passed through the boring step (S40) into a third shaped body (S3) having a third hollow part (31) which is deeper than the second hollow groove (21), and a connecting part (37) of the other side protruding to the other side of a third body part (35); and a secondary inner surface machining step (S60) for boring the lower part (35a) of the third body part (35) and forming a connecting groove (46) by cutting the connecting part (37).

IPC Classes  ?

• B21K 1/76 - Making machine elements elements not mentioned in one of the preceding groups
• B21J 5/02 - Die forgingTrimming by making use of special dies
• C21D 1/18 - HardeningQuenching with or without subsequent tempering

Abstract

The present invention relates to a method and an apparatus for producing a battery terminal plate for a vehicle by means of a cold forging method, and the apparatus, which utilizes a first shaped body (20) formed by blanking material (10) to form first protrusions (21) on both sides of the upper surface to produce a battery terminal plate for a vehicle, comprises: a first forging mold set (100) for producing a second shaped body (30) by forming, by means of cold forging, second protrusions (31) on the first protrusions (21) of the first shaped body (20); a second forging mold set (200) for producing a fourth shaped body (50) by radially forming a plurality of upper grooves (51) with respect to a hole (41) on the top surface of a third shaped body (40) which is the second shaped body (30) on which the hole (41) has been machined; and a third forging mold set (300) for producing a fifth shaped body (60) by radially forming a plurality of lower grooves (61) with respect to the hole (41) on the bottom surface of the fourth shaped body (50), and due to such a structure, the present invention produces, by means of a cold forging method, a battery terminal plate for a vehicle having accurate measurements and structural precision.

IPC Classes  ?

• B21J 5/02 - Die forgingTrimming by making use of special dies
• B21J 9/02 - Special design or construction

Abstract

Disclosed is a method for manufacturing a helical carrier for an automatic parking brake system using side-extrusion type of cold forging, the method comprising: a helical gear manufacturing step (S100) for manufacturing a helical gear (1) having a hollow assembly recess (3) formed therein and oblique saw teeth formed on the outer periphery thereof; a carrier shaft manufacturing step (S200) for manufacturing a carrier shaft (5) having a spline part (6) formed on one lateral end thereof and an assembly step (7) formed on an opposite lateral end thereof, wherein the assembly step corresponds to the hollow assembly recess (3); and a final assembly step (S300) for assembling the carrier shaft (5) to the helical gear (1) through press-fitting such that the assembly step (7) of the carrier shaft (5) is positioned in the hollow assembly recess (3) of the helical gear (1).

IPC Classes  ?

• F16H 55/17 - Toothed wheels
• B24B 53/075 - Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
• B21K 1/32 - Making machine elements wheelsMaking machine elements discs discs, e.g. disc wheels