Abstract

The present invention relates to a manufacturing device for manufacturing a sol seat, the device comprising: a die block (10); a punch block (20) formed to be movable relative to the die block (10) in the longitudinal direction; multiple molding devices (30) arranged and installed in the transverse direction with respect to the die block (10) and the punch block (20); and a moving device (40) for moving a material between the die block (10) and the punch block (20), wherein the multiple molding devices (30) comprise: a primary upsetting molding device (100); a center groove molding device (400) adjacent to the primary upsetting molding device (100); an extrusion molding device (500) adjacent to the center groove molding device (400); and a piercing molding device (600) adjacent to the extrusion molding device (500), and the multiple molding devices (100,400,500,600) comprise: first, fourth, fifth, and sixth die fillers (113,413,513,613) installed to be fixed to the lower portion of the die block (10), first, fourth, fifth, and sixth die middle pins (111,411,511,611) being installed in through-holes, which are formed in the die fillers, respectively, so as to be movable in the longitudinal direction; first, fourth, fifth, and sixth die cases (115,415,515,615) installed at the upper portions of the respective die fillers (113,413,513,613), the first, fourth, fifth, and sixth die middle pins (111,411,511,611) being installed to be movable in the longitudinal direction through through-holes formed in the die cases, the die cases having first, fourth, fifth, and sixth die inserts (116,415,516,616) installed at the top portions thereof, the die inserts having respective materials and first, fourth, fifth, and sixth die pins (114,414,514,614), installed to be movable in the longitudinal direction through through-holes formed therein; first, fourth, fifth, and sixth punch pins (121, 421, 521, 621) installed to move in the longitudinal direction so as to be inserted into the first, fourth, fifth, and sixth die inserts (116, 415, 516, 616); and first, fourth, fifth, and sixth punch cases (122,422,522,622) to which the first, fourth, fifth, and sixth punch pins (121,421,521,621) are fixed.

IPC Classes  ?

• B21J 13/02 - Dies or mountings therefor
• B21J 13/06 - Hammer tups; Anvils; Anvil blocks
• B21J 9/02 - Special design or construction
• B21J 9/04 - Piercing presses
• B21J 9/06 - Swawing presses; Upsetting presses
• B21J 5/02 - Die forging; Trimming by making use of special dies
• B21J 5/08 - Upsetting
• B21J 5/10 - Piercing billets
• B21J 5/12 - Forming profiles on internal or external surfaces
• B21K 1/24 - Making machine elements valve parts valve seats

Abstract

The present invention relates to a forming mold for manufacturing a shaft yoke and a shaft yoke manufactured by the same, the mold enabling protruding parts to be formed at the end portions of a plurality of spline grooves formed on a shaft part, so as to prevent separation of a slip bush inserted in the shaft part of the shaft yoke. To this end, the forming mold for manufacturing the shaft yoke, of the present invention, enabling the protruding parts to be formed at the end portions of the plurality of spline grooves formed on the shaft part so as to prevent separation of the slip bush inserted in the shaft part of the shaft yoke, comprises: a guide part for guiding a downward movement of the shaft part; and a forming part for forming the protruding parts by pressing the end portions of at least one spline groove among the plurality of spline grooves.

IPC Classes  ?

• B21J 13/02 - Dies or mountings therefor
• B21J 5/02 - Die forging; Trimming by making use of special dies
• B21J 5/12 - Forming profiles on internal or external surfaces
• B21K 1/12 - Making machine elements axles or shafts of specially-shaped cross-section

Abstract

The present invention relates to a method for manufacturing a tube yoke, capable of rapidly manufacturing a tube yoke provided with a spline on a tube part through a forging step while preventing distortion involving a twisted shape of the spline. To this end, the method for manufacturing the tube yoke, according to the present invention, comprises: a tube yoke forge-molding step of injecting a material into dies and pressing with a punch to mold the tube yoke comprising the tube part and a yoke part; and a spline forge-molding step of forming the spline on the inside of the tube part by inserting, into the tube part, a mold pin provided with a spline part on the outer circumferential surface thereof.

IPC Classes  ?

• B21K 1/76 - Making machine elements elements not mentioned in one of the preceding groups
• B21J 5/02 - Die forging; Trimming by making use of special dies
• B21J 5/06 - Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
• B21J 5/12 - Forming profiles on internal or external surfaces
• B21J 9/02 - Special design or construction

Abstract

The present invention relates to a mold pin for manufacturing a tube yoke, capable of rapidly manufacturing a tube yoke provided with a spline on a tube part through a forging step while preventing distortion involving a twisted shape of the spline. To this end, the mold pin for manufacturing the tube yoke, according to the present invention, is provided with a spline part on the outer circumferential surface thereof to form the spline on the inside of the tube part of the tube yoke comprising the tube part and a yoke part, wherein a land part protruding along the outer circumferential direction is formed on the spline part corresponding to one side in the lengthwise direction of the mold pin.

IPC Classes  ?

• B21J 13/02 - Dies or mountings therefor
• B21J 5/02 - Die forging; Trimming by making use of special dies
• B21J 5/06 - Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
• B21J 5/12 - Forming profiles on internal or external surfaces
• B21K 1/76 - Making machine elements elements not mentioned in one of the preceding groups

Abstract

The present invention relates to an apparatus for manufacturing a tube yoke, capable of rapidly manufacturing a tube yoke provided with a spline on a tube part through a forging step while preventing distortion involving a twisted shape of the spline. To this end, the apparatus for manufacturing the tube yoke, according to the present invention, comprises a plurality of molds for molding the tube yoke formed so as to mold the tube yoke by injecting a material into dies and pressing with a punch to form the tube yoke comprising the tube part and a yoke part, wherein the apparatus for manufacturing the tube yoke further comprises a spline forging mold equipped with a mold pin, which is provided with a spline part on the outer circumferential surface thereof, for forming the spline on the inside of the tube part by being inserted into the tube part.

IPC Classes  ?

• B21J 13/02 - Dies or mountings therefor
• B21J 9/02 - Special design or construction
• B21J 5/02 - Die forging; Trimming by making use of special dies
• B21J 5/06 - Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
• B21J 5/12 - Forming profiles on internal or external surfaces
• B21K 1/76 - Making machine elements elements not mentioned in one of the preceding groups

Abstract

The present invention relates to a pinch yoke of an automotive steering system being formed in multiple stages by using a cold former and minimizing a load transmitted to a mold during the multi-stage forming process of the pinch yoke, thereby prolonging the service life of the mold and increasing productivity. In addition, the present invention maintains the generation of stable metal flow lines of a product, thereby ensuring durability and improving the strength of the product. To this end, the present invention produces a pinch yoke of an automotive steering system by using a cold former (automatic multi-stage cold forging) and the process of forming the pinch yoke includes: an upsetting process which supplies a round bar material to dice of a former and then punches the top portion of the round bar material to form a fine concave portion; a preforming process which reduces the length of the material, extends the outer diameter of the material, and forms small recessed portions and chamfered portions on the upper and lower surfaces of the material; a yoke forming process which forms a yoke portion and a recess on the material; a serration forming process which forms a recessed groove and a seating surface in the yoke portion of the material, and forms a serration on the recess; and a piercing process which pierces the seating surface of the material to form a through-hole.

IPC Classes  ?

• B21K 1/14 - Making machine elements fittings
• B21J 5/08 - Upsetting
• B21J 5/10 - Piercing billets
• F16D 3/26 - Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slideably connected

Abstract

In production of a solenoid valve sheet housing for an anti-lock brake system (ABS), the aim of the present invention is to make it possible to form a valve sheet housing with a micro size (2-8 mm) by means of a multi-stepped micro former, thereby not only enhancing productivity but also implementing satisfactory functions of the valve sheet housing by satisfying the roughness of a ball sheet. To achieve the above-mentioned aim, the present invention produces a solenoid valve sheet housing for an ABS for braking a vehicle by a cold forging process using a multi-stepped micro former, wherein the valve sheet housing is formed by the following processes: a material cutting process of cutting a CHQ wire coil wound in a roll shape at a certain length to obtain an annular material; a correction up-setting process of supplying the material to a dice of a former and correcting the cross section of the cut material; a preforming up-setting process for satisfying an outer diameter of the valve sheet housing by transferring the material; a preforming forward extrusion process of transferring the material to preform the material into the shape of a product; a composite forming process of transferring the material to simultaneously perform an inner diameter hole backward extrusion process and form a valve sheet; a beveling process of beveling the outer diameter by rotating the material at 180° while transferring the material; and a piercing process of forming a flow path with ultramicropores, i.e. ultramicroholes (orifices), in the center of a sheet part by rotating the material again at 180° while transferring the material.

IPC Classes  ?

• B21K 1/24 - Making machine elements valve parts valve seats
• B21J 5/08 - Upsetting
• B21D 31/02 - Stabbing or piercing, e.g. for making sieves

Abstract

The present invention relates to a method for manufacturing a pipe joint for a vehicle steering system. Particularly, the pipe joint is extrusion-molded through a forming step wherein a bore hole is first formed in a cut material, then a yoke is formed, and in a final step, uneven splines are to be formed on the outer surface of the pipe joint, thereby enabling process reduction and productivity improvement to be expected. As a means for solving the problem, the present invention extrusion-molds the pipe joint through: a center groove forming step for preventing internal vibrations by supplying, to a die of a forming machine, the material cut into a predetermined length; primary and secondary backward extrusion-molding steps of extrusion-molding the bore hole by pressing, in stages, the material having the center groove formed therein; a preliminary yoke forming step of forming a preliminary yoke at one side of the material; a yoke forming step of extending the bore hole in the material and forming a U-shaped yoke; and a spline forming step of forming the uneven splines on a pipe body having the bore hole formed therein.

IPC Classes  ?

• B62D 1/20 - Connecting steering column to steering gear
• B21C 23/08 - Making wire, rods or tubes
• B21D 22/02 - Stamping using rigid devices or tools

Abstract

The objective of the present invention is to form a yoke part at one end portion of a shaft joint for a vehicle steering system and extend the use lifespan of an extrusion punch by reducing a forging extrusion load of the extrusion punch for forming the yoke part. To this end, the present invention comprises: a chamfer forming step for forming a chamfered part on one side of the material by supplying, to a die, a material cut into a predetermined length and pressing the material with a punch; an extrusion molding step for forming a shaft and a head part by transferring and supplying the material to an extrusion molding die by pressing the material with the punch; a preliminary forming step for forming a preliminary yoke at one side of the shaft by transferring and supplying the material to a preliminary forming die and pressing the material with the punch; a yoke part forming step for forming the yoke part at one side of the shaft by transferring and supplying the material to a yoke forming die and pressing the material with the punch, wherein a square inclined surface is formed in the formed yoke part by using a square punch when the yoke part is formed, so as to reduce a pressing load of the punch such that the durability of a punch mold is improved; and a spline forming step for forming splines on the shaft by supplying the material to a spline forming die and pressing the material with the punch.

IPC Classes  ?

• B21D 28/14 - Dies
• B62D 1/16 - Steering columns