WO2019221327A1 - Method for manufacturing stainless ball stud for vehicle suspension device - Google Patents

Method for manufacturing stainless ball stud for vehicle suspension device Download PDF

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Publication number
WO2019221327A1
WO2019221327A1 PCT/KR2018/006707 KR2018006707W WO2019221327A1 WO 2019221327 A1 WO2019221327 A1 WO 2019221327A1 KR 2018006707 W KR2018006707 W KR 2018006707W WO 2019221327 A1 WO2019221327 A1 WO 2019221327A1
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WO
WIPO (PCT)
Prior art keywords
diameter
ball stud
molding
molded article
cutting
Prior art date
Application number
PCT/KR2018/006707
Other languages
French (fr)
Korean (ko)
Inventor
박종복
Original Assignee
주식회사 대동
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 대동 filed Critical 주식회사 대동
Priority to US16/335,998 priority Critical patent/US20200108437A1/en
Priority to DE112018002355.9T priority patent/DE112018002355T5/en
Publication of WO2019221327A1 publication Critical patent/WO2019221327A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B3/00—General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
    • B23B3/16—Turret lathes for turning individually-chucked workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0604—Construction of the male part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F16C11/0685—Manufacture of ball-joints and parts thereof, e.g. assembly of ball-joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/02—Dies or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/022—Special design or construction multi-stage forging presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/11—Joints, e.g. ball joints, universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/14—Suspension elements of automobile vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/20—Land vehicles

Definitions

  • the present invention relates to a method for manufacturing a stainless steel ball stud for a vehicle suspension, and more particularly, a high quality stainless steel ball for a vehicle suspension through a male thread forming step, a cutting and a surface finishing step, from a stainless steel forged product manufactured in a forging molding step. It is a method for manufacturing stainless ball studs for automobile suspensions that can be manufactured with studs.
  • the suspension device is primarily used to alleviate the large vibrations transmitted through the wheels as well as to alleviate the vibrations and ride comfort of the vehicle body. Is installed.
  • the vehicle suspension system supports the external force acting in the up and down direction by connecting the vehicle body and the wheel by using the spring and the pull-up server, and in the other direction, the relative movement between the vehicle body and the wheel is appropriately balanced. It performs the function of harmonizing mechanically appropriately.
  • the lower arm, the knuckle and the stabilizer link are connected via the ball stud.
  • Suspension ball studs for automobiles are annealed (annealed) to structural steels that require heat treatment, and cold forged to produce forged molded parts to have heads, washers, tapers, threaded parts, and hexagon wrench grooves.
  • the molded product is quenched (quenched) and tempered (tempered) and heat treated to improve its strength, and then it is manufactured by forming a male screw in the threaded part and cutting the head and the neck.
  • Suspension ball studs for automobiles are designed in various forms. Especially, in the forging molding step, the forging molded product must be molded by a molding process suitable for the design form, so that the fatigue of the molding die can be reduced and the life of the molding die can be extended. By reducing the processing burden in the cutting stage, it is possible to improve productivity and reduce costs.
  • FIG. 1 is a front view of a stainless ball stud for automobile suspension according to the present invention.
  • the stainless steel ball stud 10 for vehicle suspension according to the present invention is provided with a concave neck 12 around the lower portion of the spherical head 11, and a washer 13 is provided at the lower end of the neck 12. And a straight portion 14 having a diameter smaller than the diameter of the washer portion 13 is provided in the lower portion of the washer portion 13, and the taper portion 15 is reduced in diameter toward the lower portion of the straight portion 14.
  • a male screw portion 16 having a diameter smaller than the lower end diameter of the tapered portion 15 is provided at the lower portion of the tapered portion 15, and a smaller than the diameter of the male screw portion 16 at the lower portion of the male screw portion 16.
  • the dog pointer 17 having a diameter is provided, and the hexagonal wrench groove 18 is provided at the lower end of the dog pointer 17.
  • Patent Document 1 Korean Patent Laid-Open Publication No. 10-2008-0114219 discloses a method for forming a stabilizer link ball stud, which is formed by cold forging a ball stud of a stabilizer link used in an automobile suspension system.
  • the molding method of the ball stud for stabilizer link of Patent Document 1 is to be able to form a forged molded product of the ball suspension for automobile suspension through cold forging, but does not have a tapered portion. Since it is a shaping
  • Patent document 2 Japanese Patent Laid-Open No. Hei 6-880966 discloses a method for producing a ball stud similar to that of a stainless ball stud for a vehicle suspension apparatus according to the present invention.
  • the method for manufacturing a ball stud of Patent Document 2 is to manufacture a ball stud having a washer portion provided at a lower portion of a neck, and a straight portion, a tapered portion, and a screw portion provided at a lower portion of a washer, and forging molding steps of the first to sixth molding processes. Mold the forged molded article through.
  • the hexagon wrench groove should be post-processed after the forging molding step at the bottom of the screw portion.
  • the manufacturing method of the ball stud according to the prior art including the patent document 1 and the patent document 2 is unable to obtain a forged molded product suitable for manufacturing a stainless ball stud for a vehicle suspension device of the type to which the present invention relates in the forging molding step. There was a problem.
  • the method for manufacturing a ball stud according to the prior art has a problem that the productivity is reduced, because a large portion of the forged molded product must be cut or post-processed, the manufacturing cost is high.
  • the method for manufacturing a ball stud according to the related art requires a heat treatment step because the ball stud is manufactured from structural steel that requires heat treatment, and a plating step for preventing corrosion is essential, so that the manufacturing process is not only complicated, but also a manufacturing time. And manufacturing manpower, manufacturing costs are high, there is a problem that the productivity is lowered.
  • the present invention is to solve the problem of the method for manufacturing a ball stud for automobile suspension according to the prior art, the purpose of which is to provide a concave neck portion around the lower portion of the spherical head, washer portion is provided at the lower end of the neck, washer The lower portion of the portion is provided with a straight portion having a diameter smaller than the diameter of the washer portion, the lower portion of the straight portion is provided with a tapered portion whose diameter decreases toward the lower portion, the lower portion of the tapered portion is provided with a male screw portion having a diameter smaller than the lower diameter of the tapered portion, Manufacture of stainless ball studs for automobile suspensions, which enables the manufacture of stainless ball studs for vehicle suspensions having a dog pointer having a diameter smaller than the diameter of the male threaded portion and a hexagon wrench groove formed at the bottom of the dog pointers. To provide a way.
  • the present invention is an automobile suspension device for improving the productivity by allowing the surface finishing on the head at the same time in the process of cutting the head and neck through the cutting machine after the plating step It is to provide a method for producing a stainless ball stud.
  • Another object of the present invention is to provide a method for manufacturing a stainless steel ball stud for a vehicle suspension device which can omit the heat treatment step or the plating step, thereby improving productivity and reducing costs.
  • the method for manufacturing a stainless steel ball stud for automobile suspension is provided with a concave neck portion around the lower portion of the spherical head, a washer portion is provided at the lower end of the neck portion, A straight portion having a diameter smaller than the diameter of the washer is provided, and a tapered portion whose diameter is reduced toward the lower portion of the straight portion is provided, and a male screw portion having a diameter smaller than the lower diameter of the tapered portion is provided at the lower portion of the tapered portion, A method of manufacturing stainless ball studs for automobile suspensions for manufacturing stainless ball studs for automobile suspensions in which a dog pointer portion having a diameter smaller than the diameter of the male thread portion is provided and a hexagon wrench groove is provided at the bottom of the dog pointer portion.
  • the molding die works simultaneously, and the forging molded part of the preceding mold Forging step of forging the molded article produced by forging the top diameter and the bottom of the same diameter cylindrical stainless steel through a progressive press machine is transferred;
  • a vertical wood cutting board is provided in the lower portion of the spherical head, a vertical portion of a diameter smaller than the diameter of the wood cutting board is provided at the bottom of the wood cutting board
  • a tapered portion having a smaller diameter is provided at the lower portion of the vertical portion, and a male thread preliminary portion having a diameter smaller than the lower diameter of the tapered portion is provided at the lower portion of the tapered portion, and a dog pointer portion having a smaller diameter than the male screw preliminary portion is provided at the lower portion of the male screw predecessor. It is provided, characterized in that forging molded article of the form provided with a hexagon wrench groove in the lower end of the dog pointer.
  • the forging molding step is made of a six-stage simultaneous molding process, the cut material is transferred to the first molding mold, the first molded article to the second molding mold The second molded article is transferred to the third mold, the third molded article is transferred to the fourth mold, the fourth molded article is transferred to the fifth mold, and the fifth molded article is transferred to the sixth mold. It characterized in that the sixth molded article is discharged to the outside.
  • Stainless steel ball stud manufacturing method for a vehicle suspension is the forging molding step, the first molding mold is made of a vertical length of the same length of the top diameter and the bottom diameter of the entire material is made of a vertical portion the same top diameter and bottom diameter A first molding process for molding into a first molded article having a small diameter round portion formed at a lower edge of the vertical portion; A second male mold is provided with a vertical male screw thread having a diameter smaller than the diameter of the vertical portion in the lower section of the vertical portion, and the second molded mold is formed into a second molded article having a hemispherical shape between the vertical portion and the male screw thread.
  • a second molding process Through the third molding mold, a tapered head preliminary part having a lower diameter larger than the upper diameter and a vertical wood sharpening member having a diameter larger than the diameter of the vertical part are provided in the upper section of the vertical part.
  • the spherical head is molded to the head preliminary part by the fourth molding die, the vertical dog pointer part having a diameter smaller than the diameter of the male thread preliminary part is formed in the lower section of the male thread preliminary part, and the hexagon wrench groove at the bottom of the dog pointer part.
  • a fourth molding step of molding the predetermined portion into a fourth molded article having a molded shape A fifth molding step of molding the fourth molded article into a fifth molded article having a hexagonal wrench groove formed at a lower end of the dog pointer through a fifth molding die; And a sixth molding process of molding the fifth molded article into a sixth molded article having a tapered portion formed in a lower section of the vertical portion through the sixth molding die.
  • Stainless steel ball stud manufacturing method for automobile suspension is a cutting and surface finishing step, the first cutting process of cutting the head of the forged molded article to the correct dimensions through the first cutter of the ball stud processing apparatus; A second cutting process of cutting the wood preliminary part of the forged molded product by a second cutting machine of the ball stud processing device to form a neck part and a washer part; And a surface finishing process for finishing the head through the surface finishing tool of the ball stud processing apparatus.
  • Stainless steel ball stud manufacturing method for automobile suspension is a cutting and surface finishing step, the chuck is installed to be rotatable on the main shaft, the jaw is mounted on the front of the chuck can be fixed to fit the ball stud in the center of the chuck A fixing part in which a fixing groove is formed; A turret is connected to the main body so as to be changeable in position, and a plurality of attachment holes are formed on the front of the turret so that a first cutter, a second cutter, and a surface finishing tool are fixed to each attachment hole; It is characterized in that the progress by the stud processing apparatus.
  • the surface finishing tool of the tool part may include a tool holder mounted to an attachment hole of a turret; It characterized in that it comprises a; a carbide wheel for surface finishing processing the head of the forged molded article, a shaft for coupling the tool holder and the carbide wheel.
  • a ball stud processing apparatus includes a motor for controlling a fixed part and a tool part simultaneously to operate a first drive part and a second drive part, and a first drive part to drive the fixed part.
  • a motor for controlling a fixed part and a tool part simultaneously to operate a first drive part and a second drive part, and a first drive part to drive the fixed part.
  • a concave neck is provided around the lower part of the spherical head, a washer part is provided at the bottom of the neck part, and a straight line having a diameter smaller than the diameter of the washer part is provided at the bottom of the washer part.
  • the lower portion of the straight portion is provided with a tapered portion whose diameter decreases toward the lower portion, the lower portion of the tapered portion is provided with a male screw portion having a diameter smaller than the lower end diameter, and the lower portion of the male screw portion has a diameter smaller than the diameter of the male screw portion.
  • the dog pointer is provided, and the stainless steel ball stud for the suspension of the vehicle provided with a hexagon wrench groove at the bottom of the dog pointer can be easily manufactured, thereby improving productivity and reducing costs.
  • the method for manufacturing a stainless steel ball stud for a vehicle suspension according to the present invention, by forming a hexagon wrench groove alone in the forging molding step, it is possible to greatly improve the precision of the hexagon wrench groove to manufacture a high quality stainless steel ball stud for the vehicle suspension device. You can do it.
  • the tapered portion can be precisely formed by molding the tapered portion in the final molding process of the forging molding step, so that subsequent processing of the tapered portion is required. This reduces the number of processes, improves productivity, and reduces costs.
  • the manufacturing method of the stainless steel ball stud for the vehicle suspension it is possible to omit the heat treatment step to improve the rigidity and the plating step to prevent the surface corrosion to more easily the stainless steel ball stud for the vehicle suspension It can be manufactured to improve productivity and reduce costs.
  • FIG. 1 is a front view of a stainless ball stud for a vehicle suspension apparatus according to the present invention
  • FIG. 2 is a process flow chart of a method for manufacturing a stainless ball stud for a vehicle suspension according to the present invention
  • 3a to 3f is a cross-sectional view of the main part of each forming step of the forging step of the stainless ball stud manufacturing method for automobile suspension according to the invention
  • Figure 4a to 4f is a front view of the molded article of each molding process of the forging step of the stainless ball stud manufacturing method for automobile suspension according to the present invention
  • FIG. 5 is a configuration of the ball stud processing apparatus used in the cutting and surface finishing step of the stainless ball stud manufacturing method for automobile suspension according to the present invention
  • FIG. 6 is a perspective view of main parts of the fixing part of the ball stud processing apparatus
  • FIG. 7 is a perspective view of essential parts of a tool part of the ball stud processing apparatus
  • 9a and 9b show a carbide wheel of the surface finishing tool of the ball stud processing apparatus.
  • a concave neck portion 12 is provided around the lower portion of the spherical head portion 11 as shown in FIG. 1, and a washer portion 13 is provided at the lower end portion of the neck portion 12.
  • the lower portion of the washer 13 is provided with a straight portion 14 having a diameter smaller than the diameter of the washer portion 13, and the lower portion of the straight portion 14 is provided with a tapered portion 15 having a reduced diameter toward the lower portion.
  • a male screw portion 16 having a diameter smaller than the lower end diameter of the tapered portion 15 is provided at the lower portion of the tapered portion 15, and a diameter smaller than the diameter of the male screw portion 16 is provided at the lower portion of the male screw portion 16.
  • a dog pointer 17 is provided, and a stainless ball stud for automobile suspension for manufacturing a stainless ball stud 10 for a vehicle suspension having a hexagon wrench groove 18 provided at a lower end of the dog pointer 17. It is a manufacturing method.
  • FIG. 2 is a process flowchart of a method for manufacturing a stainless ball stud for a vehicle suspension according to the present invention.
  • the method for manufacturing a ball stud for a vehicle sage device includes a forging molding step, a male screw forming step, a cutting and a surface finishing step.
  • the method of manufacturing a ball stud for a vehicle sage device according to the present invention uses a stainless material, there is no need to perform a heat treatment step for increasing rigidity and a plating step for preventing surface corrosion after the forging molding step.
  • a cylindrical material of the same length as the upper diameter and the lower diameter is passed through a progressive press machine in which a plurality of molding dies are operated at the same time and the forging molded parts of the preceding mold are transferred to the subsequent mold. It is molded into a molded article having a shape similar to that of (10).
  • the forging molding step by a progressive press machine consists of six simultaneous molding processes, the cut material is transferred to the first molding die, the first molded article is transferred to the second molding mold, and the second molded article is the third molding.
  • the mold is transferred to the mold, the third molded article is transferred to the fourth molding mold, the fourth molded article is transferred to the fifth molding mold, the fifth molded article is transferred to the sixth molding mold, and the sixth molded article is discharged to the outside.
  • the multi-stage progressive forming technology is obvious in the technical field to which the present invention belongs, and thus a detailed description thereof will be omitted.
  • FIGS. 4A to 4F illustrate a stainless ball stud for the automotive suspension according to the present invention. It is a front view of the molded article of each shaping
  • the first molding process is a process of forming a top surface and a bottom surface of a cylindrical stainless material of a predetermined length having the same length as the top diameter and the bottom diameter through the first molding mold as shown in FIG. 3A.
  • the first molded article 101 formed through the first molding process is composed of a vertical portion 101a having the same upper diameter and lower diameter as the whole as shown in FIG. 4A, and a small diameter round at the lower edge of the vertical portion 101a.
  • the addition has a form formed.
  • the total length of the first molded article 101 is slightly reduced compared to the total length of the material.
  • the male screw preliminary part having a diameter smaller than the diameter of the vertical portion 101a is formed in the lower section of the vertical portion 101a of the first molded product 101 through the second molding mold ( 102a).
  • the second molded product 102 formed through the second molding process has a shape in which the vertical portion 101a having a large diameter and the male screw preliminary portion 102a having a small diameter are connected in a hemispherical shape.
  • the total length of the second molded article 102 is extended compared to the overall quality of the first molded article 101, and the length of the male screw predecessor 102a is molded to about one fourth of the total length of the second molded article 102. .
  • the third molding process is a process of molding the head preliminary part 103a and the wood preliminary part 103b in the upper section of the vertical portion 101a of the second molded article 102 through the third molding die as shown in FIG. 3C.
  • the third molded article 103 formed through the third molding process is formed in a tapered shape in which the head preliminary part 103a has a lower diameter than the top diameter as shown in FIG. 4C, and the head preliminary part 103a and the vertical portion 101a.
  • the wood preliminary section 103 provided between the heads is formed into a vertical shape having a diameter larger than the diameter of the vertical section 101a, and the head preliminary section 103a and the wood section section have a lower diameter than the diameter of the wood section 103b.
  • 103b has a tapered shape in which the diameter becomes smaller toward the bottom.
  • the entire length of the third molded article 103 is shorter than the entire length of the second molded article 102 and is molded longer than the entire length of the first molded article 101.
  • the length of the vertical portion 101a of the third molded article 103 is significantly reduced compared to the length of the vertical portion 101a of the second molded article 102, and the length of the head preliminary portion 103a is reduced. Molded to a length similar to
  • the connecting portion between the vertical portion 101a and the male screw preliminary portion 102a is compressed, so that the length of the male screw preliminary portion 102a of the third molded article 103 is the male screw of the second molded article 102. It extends slightly longer than the length of the predetermined portion 102a.
  • the spherical head 104a is formed on the head preliminary part 103a of the third molded part 103 through the fourth molding die, and the male screw preliminary part of the third molded part 103 is formed ( A process of forming a vertical dog pointer portion 104b having a diameter smaller than that of the male screw preliminary portion 102a in the lower section of the 102a, and simultaneously forming a hexagon wrench groove preliminary portion 104c at the bottom of the dog pointer portion 104a. to be.
  • the fourth molded article 104 formed through the fourth molding process has a wood cutting unit 103b, a vertical portion 101a, a male thread cutting unit 102a, and a dog pointer unit at a lower portion of the spherical head 104a as shown in FIG. 4D. 104b is provided.
  • the hexagonal wrench groove preliminary portion 104c provided at the lower end of the dog pointer portion 104b of the fourth molded article 104 has a concave shape.
  • the overall length of the fourth molded part 104 is determined by the third molded part 103. ) Is shrunk than the full length.
  • the fifth molding process is a process of molding the hexagonal wrench groove 105a at the lower end of the dog pointer portion 104b of the fourth molded article 104 through the fifth molding mold as shown in FIG. 3E.
  • 4E is a front view of a fifth molded article molded through a fifth molding process.
  • the hexagon wrench grooves 105a are formed by additionally pressing the hexagon wrench groove preliminaries 104c provided at the lower end of the dog pointer portion 104b of the fourth molded product 104.
  • the hexagon wrench grooves 105a can be molded more precisely.
  • the overall length and external shape of the fifth molded article 105 molded through the fifth molding process does not change significantly when compared with the fourth molded article 104.
  • the sixth molding step is a step of molding the tapered portion 106a in the lower section of the vertical portion 101a of the fifth molded product 105 through the sixth molding die.
  • 4F is a front view of the sixth molded article formed through the sixth molding process.
  • the overall length of the sixth molded article 106 is the eighth molded article 103. Extends beyond its entire length.
  • the method for manufacturing the stainless steel ball stud for the automobile suspension according to the present invention is most suitable for manufacturing the stainless steel ball stud 10 for the vehicle suspension according to the present invention through the forging process of the first to sixth molding processes.
  • the molded article 106 is produced.
  • the sixth molded product 106 which is the final molded product produced through the forging molding steps of the first to sixth molding processes, is provided with a vertical wood cutting unit 103b at the lower portion of the spherical head 104a, as shown in FIG.
  • a vertical portion 101a having a diameter smaller than the diameter of the wooden projection portion 103b is provided at the lower portion of the wooden projection portion 103b, and a tapered portion 106a is provided at the lower portion of the vertical portion 101a, the diameter of which is reduced toward the lower portion.
  • a male screw preliminary portion 102a having a diameter smaller than the bottom diameter of the tapered portion 106a is provided at the lower portion of the tapered portion 106a, and a diameter smaller than the male screw preliminary portion 102a at the lower portion of the male screw preliminary portion 102a.
  • the dog pointer 104b is provided, and the hexagonal wrench groove 105a is provided at the lower end of the dog pointer 104b.
  • the forged molded product 106 means the sixth molded product 106 which is the final molded product manufactured through the forged molding step.
  • the male screw forming step is a step of forming a male screw on the male screw preliminary part 102a of the forged molded product 106 by using a rolling machine.
  • the head 11 of the forged molded product 106 is cut to an accurate dimension through a single ball stud processing device 100, and the wood cutting unit 103 is cut to cut the neck 12 and the washer part.
  • Step (13) is molded, and the surface finishing work on the head 11 is performed to complete the final stainless steel ball stud 10 for the vehicle suspension.
  • the cutting and surface finishing step may include a first cutting process of cutting the head 104a of the forging molded product 106 to an accurate dimension through the first cutter 310 of the ball stud processing apparatus 100; A second cutting step of forming the neck part 12 and the washer part 13 by cutting the wood preliminary part 103b of the forged molded part 106 through the second cutter 320 of the ball stud processing apparatus 100; And a surface finishing process of finishing the head 104a through the surface finishing tool 330 of the ball stud processing apparatus 100.
  • the upper part of the forging molded part 106 except for a part of the lower end of the wood cutting unit 103b is concavely cut to form the neck part 12, and the washer part 13 is left behind the neck part 12. do.
  • FIG. 5 is a configuration diagram of a ball stud processing apparatus used in the cutting and surface finishing step of the method for manufacturing a stainless steel ball stud for automobile suspension according to the present invention
  • Figure 6 is a perspective view of the main portion of the fixing portion of the ball stud processing apparatus
  • 7 is a perspective view of main parts of the tool section of the ball stud processing apparatus.
  • the ball stud processing apparatus 100 used in the cutting and surface finishing steps of the stainless steel ball stud for the vehicle suspension according to the present invention has a chuck 204 connected to the main shaft 202 so as to be rotatable, and the chuck 204
  • the jaw 206 is mounted on the front of the fixing part 200 is formed with a fixing groove 208 for fixing the ball stud 10 in the center of the chuck 204;
  • the turret 302 is connected to the main body 304 so as to be changeable in position, and a plurality of attachment holes 306a, 306b, and 308 are formed on the front surface of the turret 302, so that each attachment hole 306a and 306b is formed.
  • a tool part 300 in which the first cutter 310, the second cutter 320, and the surface finishing tool 330 are fixed to the blade 308.
  • the surface finishing tool 330 of the tool unit 300 in the ball stud processing apparatus 100 includes a tool holder 332 mounted to the attachment hole 308; Carbide wheels 334 connected to the tool holder 332 by a shaft 336; It includes a hydraulic fluid discharge hole 344 formed through the shaft 336.
  • the ball stud processing apparatus 100 performs a cutting process and a surface finishing process of the forged molded product 106 that has undergone the forging step as a processing unit.
  • the head part 104a and the wood cutting part 103b are cut by driving control of the fixing part 200 and the tool part 300 under the control of the control part 420 in order to process the forged molded product 106 which has undergone the forging step.
  • the cutting is performed first, and then the surface finishing is performed so that the average surface roughness of the head 104a is uniformly displayed in a predetermined range (for example, in the range of 01 to 05a).
  • the fixing part 200 includes a headstock 202 which is a main body, a plurality of jaws 206 which directly fix the rotating chuck 204 and the forged molded product 106.
  • the headstock 202 of the fixing part 200 is connected to the first driving part 430 as shown in FIG. 5, and the front center of the chuck 204 rotating at the speed required by the ball stud processing apparatus 100 is shown in FIG. As shown in Fig. 6, the three jaws 206 are arranged at equal intervals radially to form the fixing groove 208.
  • the tool part 300 includes a drum-shaped main body 304 and a disk-shaped turret 302 as shown in FIG. 7, and a plurality of attachment holes 306a (to fix the various types of tools to the turret 302) ( 306b) 308 are provided.
  • the plurality of attachment holes 306a, 306b, and 308 have a shape suitable for each tool, and two attachment holes 306a and 306b for fixing the first cutter 310 and the second cutter 320.
  • the fitting groove is provided, and the attachment hole 308 for fixing the surface finishing tool 330 is provided with a binding through-hole.
  • control unit 420 simultaneously controlling the fixing unit 200 and the tool unit 300 may include the first driving unit 430 and the first driving unit 430. Operate the second drive unit 440.
  • the first driving unit 430 operates the motor 450a for driving the fixing unit 200 to rotate the fixing unit 200 according to a preset program
  • the second driving unit 440 operates the tool unit 300.
  • Surface finishing the first cutter 310 to cut the head 104a by operating the driving motor 450b, the second cutter 320 to cut the wood cutting unit 103b, and the head 104a
  • the surface finishing tool 330 sequentially positions the tool unit 300 according to a preset program.
  • the cutting oil is sprayed onto the cutting edge from the cutting oil injector 600 which is configured externally, and the surface finishing process by the surface finishing tool 330 will be described later.
  • the hydraulic fluid flows from the hydraulic oil discharge hole 344 formed in the surface finishing tool 330 to the cemented carbide wheel 334 by an appropriate amount.
  • the surface finishing tool 330 of the tool 300 plays the most important role in determining the average surface roughness of the ball stud 10.
  • FIGS. 9A and 9B are views illustrating a carbide wheel of the surface finishing tool of the ball stud processing apparatus.
  • the surface finishing tool 330 of the tool 300 includes a tool holder 332 and a cemented carbide wheel 334 mounted to the mounting hole 308 of the turret 304 as shown in FIG. 332 and shaft 336 penetrating the carbide wheels 334.
  • a bearing 338 is installed between the shaft 336 inside the cemented carbide wheel 334 and the cemented carbide wheel 334, and a washer is disposed between the shaft 336 and the tool holder 332 before and after the cemented carbide wheel 334.
  • 340 is installed.
  • the hydraulic oil discharge hole 344 is formed inside the shaft 336 to allow the hydraulic oil to be discharged by a predetermined amount through the hydraulic oil discharge hole 344 to the cemented carbide wheel 334, and the hydraulic oil discharge hole 344 is closed at an end opposite to the discharge port of the hydraulic oil discharge hole 344.
  • a hydraulic oil inlet 342 having a lid is configured.
  • the surface finishing tool 330 is very important for the formation of the outer peripheral radius (R) of the carbide wheel 334, the degree of the radius (R) of the carbide wheel 334 and the head of the ball stud 10 This is because the contact ratio with (11) is determined.
  • the contact rate is low, so that the surface finishing time is long, and if the radius R is too large, the contact rate is high, resulting in streaks and high surface roughness. do.
  • the radius R of the outer circumferential surface of the cemented carbide wheel 334 of the surface finishing tool 330 is preferably about 15 to 3 mm, and the average surface of the head 11 of the ball stud 10 in the surface finishing process. It is preferable to process so that roughness may be 01-05a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Forging (AREA)
  • Vehicle Body Suspensions (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

The present invention relates to a method for manufacturing a stainless ball stud for a vehicle suspension device, the method having a technical feature comprising: a forging step for fabricating a forged product by forging a cylindrical stainless material, the upper and the lower end of which have the same diameter, through a progressive press machine in which multiple forming molds are spontaneously operated and a forged product from a preceding mold is transferred to a subsequent mold; a male screw forming step for forming a male screw on the forged product fabricated in the forging step; and a cutting and surface-burnishing step for cutting the forged product through one ball stud processing device to cut a head part to an accurate dimension, forming a neck part and a washer part, and burnishing the surface of the head part, thereby completing the stainless ball stud for the vehicle suspension device. Therefore, the method can simply and conveniently manufacture the stainless ball stud for the vehicle suspension device without performing a heat treatment step and a plating step, and thus can achieve productivity enhancement and cost reduction.

Description

자동차 현가장치용 스테인레스 볼스터드 제조방법Manufacturing method of stainless ball stud for automobile suspension
본 발명은 자동차 현가장치용 스테인레스 볼스터드 제조방법에 관한 것으로, 더 자세하게는 단조성형단계에서 제작된 스테인레스 재질의 단조 성형품을 수나사 성형단계, 절삭 및 표면다듬질단계를 거쳐 고품질의 자동차 현가장치용 스테인레스 볼스터드로 제조할 수 있도록 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법에 괸한 것이다.The present invention relates to a method for manufacturing a stainless steel ball stud for a vehicle suspension, and more particularly, a high quality stainless steel ball for a vehicle suspension through a male thread forming step, a cutting and a surface finishing step, from a stainless steel forged product manufactured in a forging molding step. It is a method for manufacturing stainless ball studs for automobile suspensions that can be manufactured with studs.
일반적으로 자동차에는 노면으로의 충격 외에도 구동력, 제동력, 원심력 등 다양한 힘이 동시에 작용하여 차량의 상·하방향으로의 진동인 범프·바운싱(bump bouncing), 차량의 좌우로의 진동인 러칭(lurching), 차량의 전·후로 진동하는 서징(surging), 상·하방향의 축을 중심으로 회전하는 요잉(Yawing), 좌·우방향의 축을 중심으로 회전하는 피칭(Pitching) 및 전·후방향의 축을 중심으로 회전하는 롤링(rolling) 등의 진동을 받게 된다.In general, in addition to the impact on the road surface, various forces such as driving force, braking force, and centrifugal force act simultaneously to bump and bouncing the vibrations in the up and down directions of the vehicle and lurching the vibrations to the left and right of the vehicle. Surging oscillating before and after the vehicle, Yawing rotating around the up and down axis, Pitching rotating around the left and right axis, and around the front and rear axis Vibration such as rolling (rolling) is rotated.
이에 따라, 노면으로부터 발생하게 되는 진동을 흡수하기 위한 수단으로 1차적으로는 차륜을 통해 완화시킴과 더불어 차륜을 통해 전달되는 큰 진동을 완충시키는 작용을 해 차체의 흔들림과 승차감을 좋게 하기 위해 현가장치가 설치된다.Accordingly, as a means for absorbing vibrations generated from the road surface, the suspension device is primarily used to alleviate the large vibrations transmitted through the wheels as well as to alleviate the vibrations and ride comfort of the vehicle body. Is installed.
상기 자동차 현가장치는 차체와 휠 사이를 연결하면서 상·하방향으로 작용하는 외력을 스프링과 쇽업서버를 이용해 지지함과 더불어 기타방향으로는 높은 강성과 유연성을 적절히 조화시켜 차체와 휠 사이의 상대운동을 기계적으로 적절히 조화시키는 기능을 수행한다.The vehicle suspension system supports the external force acting in the up and down direction by connecting the vehicle body and the wheel by using the spring and the pull-up server, and in the other direction, the relative movement between the vehicle body and the wheel is appropriately balanced. It performs the function of harmonizing mechanically appropriately.
한편, 자동차의 현가장치에서 로어암과 너클, 스태빌라이저 링크는 볼스터드를 통해 접속된다.On the other hand, in the suspension of the vehicle, the lower arm, the knuckle and the stabilizer link are connected via the ball stud.
자동차의 현가장치용 볼스터드는 열처리가 필요한 구조용강재를 어닐링(Annealing:풀림) 처리하여 냉간단조함으로써 머리부와 와셔부, 테이퍼부, 나사가공부, 육각렌치홈을 가지도록 단조 성형품을 제작한 후 단조 성형품을 다시 퀀칭(Quenching:담금질), 템퍼링(Tempering:뜨임)에 의한 열처리를 하여 강도를 향상시킨 후 나사가공부에 수나사를 성형하고, 머리부와 목부 등을 절삭가공하는 방법으로 제조된다.Suspension ball studs for automobiles are annealed (annealed) to structural steels that require heat treatment, and cold forged to produce forged molded parts to have heads, washers, tapers, threaded parts, and hexagon wrench grooves. The molded product is quenched (quenched) and tempered (tempered) and heat treated to improve its strength, and then it is manufactured by forming a male screw in the threaded part and cutting the head and the neck.
자동차의 현가장치용 볼스터드는 다양한 형태로 설계되며, 특히 단조성형단계에서 그 설계 형태에 알맞은 성형공정으로 단조 성형품을 성형하여야만 성형금형의 피로도를 저감하여 성형금형의 수명 연장을 도모할 수 있게 되고, 절삭단계의 가공부담을 경감하여 생산성 향상 및 원가 절감 등을 도모할 수 있게 된다..Suspension ball studs for automobiles are designed in various forms. Especially, in the forging molding step, the forging molded product must be molded by a molding process suitable for the design form, so that the fatigue of the molding die can be reduced and the life of the molding die can be extended. By reducing the processing burden in the cutting stage, it is possible to improve productivity and reduce costs.
도 1은 본 발명이 관계하는 자동차 현가장치용 스테인레스 볼스터드의 정면도이다.1 is a front view of a stainless ball stud for automobile suspension according to the present invention.
본 발명이 관계하는 자동차 현가장치용 스테인레스 볼스터드(10)는 구형의 머리부(11)의 하부 둘레에 오목한 목부(12)가 마련되고, 목부(12)의 하단에 와셔부(13)가 마련되고, 와셔부(13)의 하부에 와셔부(13)의 직경보다 작은 직경의 직선부(14)가 마련되고, 직선부(14)의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부(15)가 마련되고, 테이퍼부(15)의 하부에 테이퍼부(15)의 하단 직경보다 작은 직경의 수나사부(16)가 마련되고, 수나사부(16)의 하부에 수나사부(16)의 직경보다 작은 직경의 도그포인터부(17)가 마련되고, 도그포인터부(17)의 하단에 육각렌치홈(18)이 마련된 형태를 가진다.The stainless steel ball stud 10 for vehicle suspension according to the present invention is provided with a concave neck 12 around the lower portion of the spherical head 11, and a washer 13 is provided at the lower end of the neck 12. And a straight portion 14 having a diameter smaller than the diameter of the washer portion 13 is provided in the lower portion of the washer portion 13, and the taper portion 15 is reduced in diameter toward the lower portion of the straight portion 14. Is provided, a male screw portion 16 having a diameter smaller than the lower end diameter of the tapered portion 15 is provided at the lower portion of the tapered portion 15, and a smaller than the diameter of the male screw portion 16 at the lower portion of the male screw portion 16. The dog pointer 17 having a diameter is provided, and the hexagonal wrench groove 18 is provided at the lower end of the dog pointer 17.
특허문헌 1(대한민국 공개특허공보 제10-2008-0114219호)에는 자동차 현가장치에 사용되는 스태빌라이저 링크의 볼스터드를 냉간단조에 의해 성형하는 스태빌라이저 링크용 볼스터드의 성형방법이 개시되어 있다.Patent Document 1 (Korean Patent Laid-Open Publication No. 10-2008-0114219) discloses a method for forming a stabilizer link ball stud, which is formed by cold forging a ball stud of a stabilizer link used in an automobile suspension system.
특허문헌 1의 스태빌라이저 링크용 볼스터드의 성형방법은 냉간단조를 통해 후에 자동차 현가장치용 볼스터드의 단조 성형품을 성형할 수 있게 되는 것이지만 테이퍼부를 가지지 않은 등 전술한 본 발명이 관계하는 자동차 현가장치용 스테인레스 볼스터드와 구체적인 형태가 다른 형태의 볼스터드를 성형하는 성형방법이므로 본 발명이 관계하는 자동차 현가장치용 스테인레스 볼스터드를 제조하기 위한 단조 성형품을 성형할 수 없다.The molding method of the ball stud for stabilizer link of Patent Document 1 is to be able to form a forged molded product of the ball suspension for automobile suspension through cold forging, but does not have a tapered portion. Since it is a shaping | molding method which shape | molds the ball stud of a form different from a stainless ball stud, a forged molded article for manufacturing the stainless ball stud for vehicle suspension apparatus which concerns on this invention cannot be shape | molded.
특허문헌 2(일본 특허공보 특공평6-88096호)에는 본 발명이 관계하는 자동차 현가장치용 스테인레스 볼스터드와 유사한 형태의 볼스터드 제조방법이 개시되어 있다.Patent document 2 (Japanese Patent Laid-Open No. Hei 6-88096) discloses a method for producing a ball stud similar to that of a stainless ball stud for a vehicle suspension apparatus according to the present invention.
특허문헌 2의 볼스터드 제조방법은 목부의 하부에 와셔부가 마련되고, 와셔부의 하부에 직선부, 테이퍼부, 나사부가 마련되는 볼스터드를 제조하는 것으로, 제1~ 제6 성형공정의 단조성형단계를 통해 단조 성형품을 성형한다.The method for manufacturing a ball stud of Patent Document 2 is to manufacture a ball stud having a washer portion provided at a lower portion of a neck, and a straight portion, a tapered portion, and a screw portion provided at a lower portion of a washer, and forging molding steps of the first to sixth molding processes. Mold the forged molded article through.
특허문헌 2의 볼스터드 제조방법은 단조성형단계에서 육각렌치홈을 제조하는 성형공정이 없기 때문에 나사부의 하단에 단조성형단계이후에 육각렌치홈을 후가공하여야 한다.Since the method of manufacturing the ball stud of Patent Document 2 does not have a molding process for manufacturing the hexagon wrench groove in the forging molding step, the hexagon wrench groove should be post-processed after the forging molding step at the bottom of the screw portion.
또한, 특허문헌 2의 볼스터드 제조방법은 단조성형단계에서 제1 성형공정을 제외한 모든 성형공정에서 테이퍼부가 변형되기 때문에 테이퍼부의 표면이 울퉁불퉁하게 되어 높은 정밀도를 얻으려면 단조성형단계이후의 절삭단계에서 테이퍼부를 절삭가공하여야 한다.In addition, in the manufacturing method of the ball stud of Patent Document 2, since the taper parts are deformed in all molding processes except for the first molding step in the forging molding step, the surface of the taper parts becomes uneven, so that the cutting step after the forging molding step is obtained. The tapered section should be cut.
이처럼 특허문헌 1 및 특허문헌 2를 포함한 종래 기술에 따른 볼스터드 제조방법은 단조성형단계에서 본 발명이 관계하는 형태의 자동차 현가장치용 스테인레스 볼스터드의를 제조하기에 적합한 단조 성형품을 얻을 수 없게 되는 문제가 있었다.As described above, the manufacturing method of the ball stud according to the prior art including the patent document 1 and the patent document 2 is unable to obtain a forged molded product suitable for manufacturing a stainless ball stud for a vehicle suspension device of the type to which the present invention relates in the forging molding step. There was a problem.
또한, 종래 기술에 따른 볼스터드 제조방법은 단조 성형품의 많은 부분을 절삭하거나 후가공하여야 하므로 생산성이 떨어지게 되고, 제조 원가가 많이 들게 되는 문제가 있었다.In addition, the method for manufacturing a ball stud according to the prior art has a problem that the productivity is reduced, because a large portion of the forged molded product must be cut or post-processed, the manufacturing cost is high.
또한, 종래 기술에 따른 볼스터드 제조방법은 열처리가 필요한 구조용강재로 볼스터드를 제조하기 때문에 열처리단계를 거쳐야 하고, 부식방지를 위한 도금단계도 필수적으로 거쳐야 하기 때문에 제조공정이 복잡할 뿐 아니라 제조 시간 및 제조 인력, 제조 비용이 많이 들게 되고, 생산성이 떨어지게 되는 문제가 있었다.In addition, the method for manufacturing a ball stud according to the related art requires a heat treatment step because the ball stud is manufactured from structural steel that requires heat treatment, and a plating step for preventing corrosion is essential, so that the manufacturing process is not only complicated, but also a manufacturing time. And manufacturing manpower, manufacturing costs are high, there is a problem that the productivity is lowered.
본 발명은 상기 종래 기술에 따른 자동차 현가장치용 볼스터드 제조방법의 문제점을 해결하기 위한 것으로, 그 목적이 구형의 머리부의 하부 둘레에 오목한 목부가 마련되고, 목부의 하단에 와셔부가 마련되고, 와셔부의 하부에 와셔부의 직경보다 작은 직경의 직선부가 마련되고, 직선부의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부가 마련되고, 테이퍼부의 하부에 테이퍼부의 하단 직경보다 작은 직경의 수나사부가 마련되고, 수나사부의 하부에 수나사부의 직경보다 작은 직경의 도그포인터부가 마련되고, 도그포인터부의 하단에 육각렌치홈이 마련된 형태의 자동차 현가장치용 스테인레스 볼스터드를 제조할 수 있도록 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법을 제공하는 데에 있다.The present invention is to solve the problem of the method for manufacturing a ball stud for automobile suspension according to the prior art, the purpose of which is to provide a concave neck portion around the lower portion of the spherical head, washer portion is provided at the lower end of the neck, washer The lower portion of the portion is provided with a straight portion having a diameter smaller than the diameter of the washer portion, the lower portion of the straight portion is provided with a tapered portion whose diameter decreases toward the lower portion, the lower portion of the tapered portion is provided with a male screw portion having a diameter smaller than the lower diameter of the tapered portion, Manufacture of stainless ball studs for automobile suspensions, which enables the manufacture of stainless ball studs for vehicle suspensions having a dog pointer having a diameter smaller than the diameter of the male threaded portion and a hexagon wrench groove formed at the bottom of the dog pointers. To provide a way.
본 발명은 그 다른 목적이 단조성형단계에서 볼스터드를 제조하기에 가장 적함한 단조 성형품을 제작할 수 있도록 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법을 제공하는 데에 있다.It is another object of the present invention to provide a method for manufacturing a stainless ball stud for a vehicle suspension, which enables to manufacture a forged molded article most suitable for producing a ball stud in the forging molding step.
본 발명은 그 다른 목적이 도금단계이후에 절삭기계를 통해 머리부와 목부를 절삭하는 과정에서 머리부에 대한 표면다듬질을 동시에 수행할 수 있도록 하는 것에 의해 생산성을 향상시킬 수 있도록 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법을 제공하는 데에 있다.The present invention is an automobile suspension device for improving the productivity by allowing the surface finishing on the head at the same time in the process of cutting the head and neck through the cutting machine after the plating step It is to provide a method for producing a stainless ball stud.
본 발명은 그 다른 목적이 열처리단계나 도금단계를 생략할 수 있도록 하여 생산성 향상과 원가 절감을 도모할 수 있도록 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법을 제공하는 데에 있다.Another object of the present invention is to provide a method for manufacturing a stainless steel ball stud for a vehicle suspension device which can omit the heat treatment step or the plating step, thereby improving productivity and reducing costs.
상기한 바와 같은 목적을 달성하기 위하여, 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법은 구형의 머리부의 하부 둘레에 오목한 목부가 마련되고, 목부의 하단에 와셔부가 마련되고, 와셔부의 하부에 와셔의 직경보다 작은 직경의 직선부가 마련되고, 직선부의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부가 마련되고, 테이퍼부의 하부에 테이퍼부의 하단 직경보다 작은 직경의 수나사부가 마련되고, 수나사부의 하부에 수나사부의 직경보다 작은 직경의 도그포인터부가 마련되고, 도그포인터부의 하단에 육각렌치홈이 마련된 형태의 자동차 현가장치용 스테인레스 볼스터드를 제조하기 위한 자동차 현가장치용 스테인레스 볼스터드 제조방법으로, 다수의 성형금형이 동시 작동하고, 선행 금형의 단조 성형품이 후행 금형으로 이송되는 프로그레시브 프레스기계를 통해 상단 직경과 하단 직경이 동일한 원기둥형 스테인레스 소재를 단조 성형하여 단조 성형품을 제작하는 단조성형단계; 단조성형단계에서 제작된 단조 성형품에 수나사를 성형하는 수나사성형단계; 하나의 볼스터드 가공장치를 통해 단조 성형품을 절삭하여 머리부를 정확한 치수로 절삭하고, 목부와 와셔부를 성형하고, 머리부에 대한 표면다듬질 작업을 수행하여 자동차 현가장치용 스테인레스 볼스터드를 완성하는 절삭 및 표면다듬질단계;를 포함하는 것을 특징으로 한다.In order to achieve the object as described above, the method for manufacturing a stainless steel ball stud for automobile suspension according to the present invention is provided with a concave neck portion around the lower portion of the spherical head, a washer portion is provided at the lower end of the neck portion, A straight portion having a diameter smaller than the diameter of the washer is provided, and a tapered portion whose diameter is reduced toward the lower portion of the straight portion is provided, and a male screw portion having a diameter smaller than the lower diameter of the tapered portion is provided at the lower portion of the tapered portion, A method of manufacturing stainless ball studs for automobile suspensions for manufacturing stainless ball studs for automobile suspensions in which a dog pointer portion having a diameter smaller than the diameter of the male thread portion is provided and a hexagon wrench groove is provided at the bottom of the dog pointer portion. The molding die works simultaneously, and the forging molded part of the preceding mold Forging step of forging the molded article produced by forging the top diameter and the bottom of the same diameter cylindrical stainless steel through a progressive press machine is transferred; A male screw molding step of molding a male screw on a forged molded product produced in the forging molding step; Cutting a forging molded part through a single ball stud processing device to cut the head to the correct dimensions, shaping the neck and the washer, and finishing the surface to finish the stainless ball stud for the vehicle suspension Surface finishing step; characterized in that it comprises a.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법은 단조성형단계에서, 구형 머리부의 하부에 수직형의 목예정부가 마련되고, 목예정부의 하부에 목예정부의 직경보다 작은 직경의 수직부가 마련되고, 수직부의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부가 마련되고, 테이퍼부의 하부에 테이퍼부의 하단 직경보다 작은 직경의 수나사예정부가 마련되고, 수나사예정부의 하부에 수나사예정부보다 작은 직경의 도그포인터부가 마련되고, 도그포인터부의 하단에 육각렌치홈이 마련된 형태의 단조 성형품을 제작하는 것을 특징으로 한다.Stainless steel ball stud manufacturing method for automobile suspension according to the present invention, in the forging molding step, a vertical wood cutting board is provided in the lower portion of the spherical head, a vertical portion of a diameter smaller than the diameter of the wood cutting board is provided at the bottom of the wood cutting board A tapered portion having a smaller diameter is provided at the lower portion of the vertical portion, and a male thread preliminary portion having a diameter smaller than the lower diameter of the tapered portion is provided at the lower portion of the tapered portion, and a dog pointer portion having a smaller diameter than the male screw preliminary portion is provided at the lower portion of the male screw predecessor. It is provided, characterized in that forging molded article of the form provided with a hexagon wrench groove in the lower end of the dog pointer.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법은 단조성형단계가, 6단의 동시 성형공정으로 이루어지고, 절단된 소재가 제1 성형금형으로 이송되고, 제1 성형품이 제2 성형금형으로 이송되고, 제2 성형품이 제3 성형금형으로 이송되고, 제3 성형품이 제4 성형금형으로 이송되고, 제4 성형품이 제5 성형금형으로 이송되고, 제5 성형품이 제6 성형금형으로 이송되고, 제6 성형품이 외부로 배출되도록 하는 것을 특징으로 한다.Stainless steel ball stud manufacturing method for automobile suspension according to the present invention, the forging molding step is made of a six-stage simultaneous molding process, the cut material is transferred to the first molding mold, the first molded article to the second molding mold The second molded article is transferred to the third mold, the third molded article is transferred to the fourth mold, the fourth molded article is transferred to the fifth mold, and the fifth molded article is transferred to the sixth mold. It characterized in that the sixth molded article is discharged to the outside.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법은 단조성형단계가, 제1 성형금형을 통해 상단 직경과 하단 직경이 동일한 일정길이의 소재를 전체가 상단 직경과 하단 직경이 동일한 수직부로 이루어지고, 수직부의 하단 모서리에 작은 직경의 라운드부가 형성된 형태의 제1 성형품으로 성형하는 제1 성형공정; 제2 성형금형을 통해 제1 성형품을 수직부의 하부 구간에 수직부의 직경보다 작은 직경을 가지는 수직형의 수나사예정부가 마련되고, 수직부와 수나사예정부의 사이가 반구형으로 연결된 형태의 제2 성형품으로 성형하는 제2 성형공정; 제3 성형금형을 통해 제2 성형품을 수직부의 상부 구간에 상단 직경보다 하단 직경이 큰 테이퍼형의 머리예정부와 수직부의 직경보다 큰 직경의 수직형의 목예정부가 마련되고, 머리예정부와 목예정부가 하부로 갈수록 직경이 작아지는 테이퍼형으로 연결된 제3 성형품으로 성형하는 제3 성형공정; 제4 성형금형을 통해 제3 성형품을 머리예정부에 구형 머리부가 성형되고, 수나사예정부의 하단 구간에 수나사예정부의 직경보다 작은 직경의 수직형 도그포인터부가 성형되고, 도그포인터부의 하단에 육각렌치홈예정부가 성형된 형태의 제4 성형품으로 성형하는 제4 성형공정; 제5 성형금형을 통해 제4 성형품을 도그포인터부의 하단에 육각렌치홈이 성형된 형태의 제5 성형품으로 성형하는 제5 성형공정; 제6 성형금형을 통해 제5 성형품을 수직부의 하부 구간에 테이퍼부가 성형된 형태의 제6 성형품으로 성형하는 제6 성형공정;을 포함하는 것을 특징으로 한다.Stainless steel ball stud manufacturing method for a vehicle suspension according to the present invention is the forging molding step, the first molding mold is made of a vertical length of the same length of the top diameter and the bottom diameter of the entire material is made of a vertical portion the same top diameter and bottom diameter A first molding process for molding into a first molded article having a small diameter round portion formed at a lower edge of the vertical portion; A second male mold is provided with a vertical male screw thread having a diameter smaller than the diameter of the vertical portion in the lower section of the vertical portion, and the second molded mold is formed into a second molded article having a hemispherical shape between the vertical portion and the male screw thread. A second molding process; Through the third molding mold, a tapered head preliminary part having a lower diameter larger than the upper diameter and a vertical wood sharpening member having a diameter larger than the diameter of the vertical part are provided in the upper section of the vertical part. A third molding step of molding the third molded article connected in a tapered shape in which the predetermined portion becomes smaller toward the bottom; The spherical head is molded to the head preliminary part by the fourth molding die, the vertical dog pointer part having a diameter smaller than the diameter of the male thread preliminary part is formed in the lower section of the male thread preliminary part, and the hexagon wrench groove at the bottom of the dog pointer part. A fourth molding step of molding the predetermined portion into a fourth molded article having a molded shape; A fifth molding step of molding the fourth molded article into a fifth molded article having a hexagonal wrench groove formed at a lower end of the dog pointer through a fifth molding die; And a sixth molding process of molding the fifth molded article into a sixth molded article having a tapered portion formed in a lower section of the vertical portion through the sixth molding die.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법은 절삭 및 표면다듬질단계가, 볼스터드 가공장치의 제1절삭기를 통해 단조 성형품의 머리부를 정확한 치수로 절삭하는 제1 절삭공정; 볼스터드 가공장치의 제2절삭기를 통해 단조 성형품의 목예정부를 절삭하여 목부와 와셔부를 성형하는 제2 절삭공정; 볼스터드 가공장치의 표면다듬질공구를 통해 머리부를 다듬질하는 표면다듬질공정;을 포함하는 것을 특징으로 한다.Stainless steel ball stud manufacturing method for automobile suspension according to the present invention is a cutting and surface finishing step, the first cutting process of cutting the head of the forged molded article to the correct dimensions through the first cutter of the ball stud processing apparatus; A second cutting process of cutting the wood preliminary part of the forged molded product by a second cutting machine of the ball stud processing device to form a neck part and a washer part; And a surface finishing process for finishing the head through the surface finishing tool of the ball stud processing apparatus.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법은 절삭 및 표면다듬질단계가, 주축대에 회전 가능하도록 척이 연결 설치되고, 척의 전면에 조우가 장착되어 척의 중앙에 볼스터드를 끼움 고정시킬 수 있는 고정홈이 형성되는 고정부; 본체에 위치변환 가능하도록 터렛이 연결 설치되고, 터렛의 전면에 다수 개의 부착구가 형성되어 각각의 부착구에 제1절삭기와 제2절삭기와 표면다듬질공구가 고정 설치되는 공구부;를 포함하는 볼스터드 가공장치에 의해 진행되는 것을 특징으로 한다.Stainless steel ball stud manufacturing method for automobile suspension according to the present invention is a cutting and surface finishing step, the chuck is installed to be rotatable on the main shaft, the jaw is mounted on the front of the chuck can be fixed to fit the ball stud in the center of the chuck A fixing part in which a fixing groove is formed; A turret is connected to the main body so as to be changeable in position, and a plurality of attachment holes are formed on the front of the turret so that a first cutter, a second cutter, and a surface finishing tool are fixed to each attachment hole; It is characterized in that the progress by the stud processing apparatus.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법에서 공구부의 표면다듬질공구는 터렛의 부착구에 장착되는 공구홀더; 단조 성형품의 머리부를 표면다듬질가공하는 초경휠, 공구홀더와 초경휠을 결합하는 샤프트;를 포함하는 것을 특징으로 한다.In the method of manufacturing a stainless steel ball stud for a vehicle suspension according to the present invention, the surface finishing tool of the tool part may include a tool holder mounted to an attachment hole of a turret; It characterized in that it comprises a; a carbide wheel for surface finishing processing the head of the forged molded article, a shaft for coupling the tool holder and the carbide wheel.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법에서 볼스터드 가공장치는 고정부 및 공구부를 동시에 제어하는 제어부가 제1구동부 및 제2구동부를 작동시키고, 제1구동부가 고정부를 구동하는 모터를 작동시켜 미리 설정된 프로그램대로 고정부가 회전하도록 하고, 제2구동부가 공구부를 구동하는 모터를 작동시켜 머리부를 절삭하는 제1절삭기, 목예정부를 절삭하는 제2절삭기, 및 머리부를 표면다듬질가공하는 표면다듬질공구를 미리 설정된 프로그램에 따라 순차적으로 공구부가 위치 변환하도록 하는 것을 특징으로 한다.In the method for manufacturing a stainless steel ball stud for automobile suspension according to the present invention, a ball stud processing apparatus includes a motor for controlling a fixed part and a tool part simultaneously to operate a first drive part and a second drive part, and a first drive part to drive the fixed part. To rotate the fixing unit according to a preset program, and to operate the motor driving the tool unit, the second cutting unit cutting the head, the second cutting unit cutting the wood cutting unit, and the surface finishing Characterized in that the tool portion position conversion sequentially according to the preset tool.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법에 의하면, 구형의 머리부의 하부 둘레에 오목한 목부가 마련되고, 목부의 하단에 와셔부가 마련되고, 와셔부의 하부에 와셔부의 직경보다 작은 직경의 직선부가 마련되고, 직선부의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부가 마련되고, 테이퍼부의 하부에 테이퍼부의 하단 직경보다 작은 직경의 수나사부가 마련되고, 수나사부의 하부에 수나사부의 직경보다 작은 직경의 도그포인터부가 마련되고, 도그포인터부의 하단에 육각렌치홈이 마련된 형태의 자동차 현가장치용 스테인레스 볼스터드를 간편하게 제조할 수 있게 되어 생산성 향상과 원가 절감을 도모할 수 있게 된다.According to the method for manufacturing a stainless steel ball stud for automobile suspension according to the present invention, a concave neck is provided around the lower part of the spherical head, a washer part is provided at the bottom of the neck part, and a straight line having a diameter smaller than the diameter of the washer part is provided at the bottom of the washer part. The lower portion of the straight portion is provided with a tapered portion whose diameter decreases toward the lower portion, the lower portion of the tapered portion is provided with a male screw portion having a diameter smaller than the lower end diameter, and the lower portion of the male screw portion has a diameter smaller than the diameter of the male screw portion. The dog pointer is provided, and the stainless steel ball stud for the suspension of the vehicle provided with a hexagon wrench groove at the bottom of the dog pointer can be easily manufactured, thereby improving productivity and reducing costs.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법에 의하면, 단조성형단계에서 육각렌치홈을 단독 성형함으로써 육각렌치홈의 정밀도를 크게 향상시킬 수 있게 되어 고품질의 자동차 현가장치용 스테인레스 볼스터드를 제조할 수 있게 된다.According to the method for manufacturing a stainless steel ball stud for a vehicle suspension according to the present invention, by forming a hexagon wrench groove alone in the forging molding step, it is possible to greatly improve the precision of the hexagon wrench groove to manufacture a high quality stainless steel ball stud for the vehicle suspension device. You can do it.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법에 의하면, 단조성형단계의 최종 1회의 성형공정에서 테이퍼부를 성형함으로써 테이퍼부를 정밀하게 성형할 수 있게 되고, 그에 따라 테이퍼부에 대한 후속 가공이 필요없게 되므로 공정수 절감 및 생산성 향상, 원가 절감을 도모할 수 있게 된다.According to the method for manufacturing a stainless steel ball stud for an automobile suspension according to the present invention, the tapered portion can be precisely formed by molding the tapered portion in the final molding process of the forging molding step, so that subsequent processing of the tapered portion is required. This reduces the number of processes, improves productivity, and reduces costs.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법에 의하면, 절삭 및 표면다듬질단계에서 하나의 볼스터드 가공장치를 통해 머리부의 절삭과 목부의 절삭, 그리고 머리부의 표면다듬질가공을 동시에 진행하기 때문에 생산성 향상과 원가 절감을 도모할 수 있게 된다.According to the method of manufacturing a stainless steel ball stud for a vehicle suspension according to the present invention, the cutting and the finishing of the head at the same time the cutting of the head and the cutting of the neck, and the surface finishing processing of the head at the same time through a single ball stud processing device Improvements and cost reductions can be achieved.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법에 의하면, 강성을 향상시키기 위한 열처리단계와 표면부식을 방지할 수 있도록 하는 도금단계를 생략할 수 있게 되므로 보다 간편하게 자동차 현가장치용 스테인레스 볼스터드를 제조할 수 있게 되어 생산성 향상과 원가 절감을 도모할 수 있게 된다.According to the manufacturing method of the stainless steel ball stud for the vehicle suspension according to the present invention, it is possible to omit the heat treatment step to improve the rigidity and the plating step to prevent the surface corrosion to more easily the stainless steel ball stud for the vehicle suspension It can be manufactured to improve productivity and reduce costs.
도 1은 본 발명이 관계하는 자동차 현가장치용 스테인레스 볼스터드의 정면도,1 is a front view of a stainless ball stud for a vehicle suspension apparatus according to the present invention;
도 2는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 공정순서도,2 is a process flow chart of a method for manufacturing a stainless ball stud for a vehicle suspension according to the present invention;
도 3a 내지 도 3f는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 단조성형단계의 각 성형공정의 요부 단면도,3a to 3f is a cross-sectional view of the main part of each forming step of the forging step of the stainless ball stud manufacturing method for automobile suspension according to the invention
도 4a 내지 도 4f는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 단조성형단계의 각 성형공정의 성형품의 정면도,Figure 4a to 4f is a front view of the molded article of each molding process of the forging step of the stainless ball stud manufacturing method for automobile suspension according to the present invention,
도 5는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 절삭 및 표면다듬질 단계에서 사용되는 볼스터드 가공장치 구성도5 is a configuration of the ball stud processing apparatus used in the cutting and surface finishing step of the stainless ball stud manufacturing method for automobile suspension according to the present invention
도 6은 동 볼스터드 가공장치의 고정부의 요부 사시도,6 is a perspective view of main parts of the fixing part of the ball stud processing apparatus;
도 7은 동 볼스터드 가공장치의 공구부의 요부 사시도,7 is a perspective view of essential parts of a tool part of the ball stud processing apparatus;
도 8은 동 볼스터드 가공장치의 표면다듬질공구의 부분 단면 구성도,8 is a partial cross-sectional configuration of the surface finishing tool of the ball stud processing apparatus,
도 9a 및 도 9b는 동 볼스터드 가공장치의 표면다듬질공구의 초경휠을 도시한 도면.9a and 9b show a carbide wheel of the surface finishing tool of the ball stud processing apparatus.
이하 본 발명의 바람직한 실시 예에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법을 첨부된 도면에 의거하여 상세하게 설명하면 다음과 같다.Hereinafter, a stainless ball stud manufacturing method for a vehicle suspension apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
이하에서, "상방", "하방", "전방" 및 "후방" 및 그 외 다른 방향성 용어들은 도면에 도시된 상태를 기준으로 정의한다.Hereinafter, "upward", "downward", "forward" and "rear" and other directional terms are defined based on the states shown in the drawings.
본 발명은 여러가지 다양한 형태의 볼스터드 중에서 도 1과 같이 구형의 머리부(11)의 하부 둘레에 오목한 목부(12)가 마련되고, 목부(12)의 하단에 와셔부(13)가 마련되고, 와셔부(13)의 하부에 와셔부(13)의 직경보다 작은 직경의 직선부(14)가 마련되고, 직선부(14)의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부(15)가 마련되고, 테이퍼부(15)의 하부에 테이퍼부(15)의 하단 직경보다 작은 직경의 수나사부(16)가 마련되고, 수나사부(16)의 하부에 수나사부(16)의 직경보다 작은 직경의 도그포인터부(17)가 마련되고, 도그포인터부(17)의 하단에 육각렌치홈(18)이 마련된 형태의 자동차 현가장치용 스테인레스 볼스터드(10)를 제조하기 위한 자동차 현가장치용 스테인레스 볼스터드 제조방법이다.In the present invention, a concave neck portion 12 is provided around the lower portion of the spherical head portion 11 as shown in FIG. 1, and a washer portion 13 is provided at the lower end portion of the neck portion 12. The lower portion of the washer 13 is provided with a straight portion 14 having a diameter smaller than the diameter of the washer portion 13, and the lower portion of the straight portion 14 is provided with a tapered portion 15 having a reduced diameter toward the lower portion. And a male screw portion 16 having a diameter smaller than the lower end diameter of the tapered portion 15 is provided at the lower portion of the tapered portion 15, and a diameter smaller than the diameter of the male screw portion 16 is provided at the lower portion of the male screw portion 16. A dog pointer 17 is provided, and a stainless ball stud for automobile suspension for manufacturing a stainless ball stud 10 for a vehicle suspension having a hexagon wrench groove 18 provided at a lower end of the dog pointer 17. It is a manufacturing method.
도 2는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 공정순서도이다.2 is a process flowchart of a method for manufacturing a stainless ball stud for a vehicle suspension according to the present invention.
본 발명에 따른 자동차 현자장치용 볼스터드 제조방법은 단조성형단계, 수나사성형단계, 절삭 및 표면다듬질단계를 포함한다.The method for manufacturing a ball stud for a vehicle sage device according to the present invention includes a forging molding step, a male screw forming step, a cutting and a surface finishing step.
본 발명에 따른 자동차 현자장치용 볼스터드 제조방법은 스테인레스 재질의 소재를 사용하기 때문에 단조성형단계 이후에 강성을 높이기 위한 열처리단계 및 표면부식을 방지하기 위한 도금단계를 수행할 필요가 없다. Since the method of manufacturing a ball stud for a vehicle sage device according to the present invention uses a stainless material, there is no need to perform a heat treatment step for increasing rigidity and a plating step for preventing surface corrosion after the forging molding step.
단조성형단계는 다수의 성형금형이 동시 작동하고, 선행 금형의 단조 성형품이 후행 금형으로 이송되는 프로그레시브 프레스기계를 통해 상단 직경과 하단 직경이 동일한 일정 길이의 원기둥형 소재를 최종 자동차 현자장치용 볼스터드(10)의 형태와 유사한 형태의 성형품으로 성형한다.In the forging molding step, a cylindrical material of the same length as the upper diameter and the lower diameter is passed through a progressive press machine in which a plurality of molding dies are operated at the same time and the forging molded parts of the preceding mold are transferred to the subsequent mold. It is molded into a molded article having a shape similar to that of (10).
프로그레시브 프레스기계에 의한 단조성형단계는 6단의 동시 성형공정으로 이루어지고, 절단된 소재가 제1 성형금형으로 이송되고, 제1 성형품이 제2 성형금형으로 이송되고, 제2 성형품이 제3 성형금형으로 이송되고, 제3 성형품이 제4 성형금형으로 이송되고, 제4 성형품이 제5 성형금형으로 이송되고, 제5 성형품이 제6 성형금형으로 이송되고, 제6 성형품이 외부로 배출된다.The forging molding step by a progressive press machine consists of six simultaneous molding processes, the cut material is transferred to the first molding die, the first molded article is transferred to the second molding mold, and the second molded article is the third molding. The mold is transferred to the mold, the third molded article is transferred to the fourth molding mold, the fourth molded article is transferred to the fifth molding mold, the fifth molded article is transferred to the sixth molding mold, and the sixth molded article is discharged to the outside.
상기 다단 프로그레시브 성형기술은 본 발명이 속하는 기술분야에서 자명하므로 그에 대한 구체적인 설명은 생략한다.The multi-stage progressive forming technology is obvious in the technical field to which the present invention belongs, and thus a detailed description thereof will be omitted.
도 3a 내지 도 3f는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 단조성형단계의 각 성형공정의 요부 단면도이고, 도 4a 내지 도 4f는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 단조성형단계의 각 성형공정의 성형품의 정면도이다.3A to 3F are cross-sectional views of main parts of each forming process of the forging step of the method for manufacturing a stainless steel ball stud for an automobile suspension according to the present invention, and FIGS. 4A to 4F illustrate a stainless ball stud for the automotive suspension according to the present invention. It is a front view of the molded article of each shaping | molding process of the forging process of the method.
제1 성형공정은 도 3a와 같이 제1 성형금형을 통해 상단 직경과 하단 직경이 동일한 일정길이의 원기둥형 스테인레스 소재의 상단면과 하단면을 평탄하게 성형하는 공정이다.The first molding process is a process of forming a top surface and a bottom surface of a cylindrical stainless material of a predetermined length having the same length as the top diameter and the bottom diameter through the first molding mold as shown in FIG. 3A.
제1 성형공정을 통해 성형된 제1 성형품(101)은 도 4a와 같이 전체가 상단 직경과 하단 직경이 동일한 수직부(101a)로 이루어지고, 수직부(101a)의 하단 모서리에 작은 직경의 라운드부가 형성된 형태를 가진다.The first molded article 101 formed through the first molding process is composed of a vertical portion 101a having the same upper diameter and lower diameter as the whole as shown in FIG. 4A, and a small diameter round at the lower edge of the vertical portion 101a. The addition has a form formed.
제1 성형품(101)의 전체 길이는 소재의 전체 길이에 비해 약간 축소된다.The total length of the first molded article 101 is slightly reduced compared to the total length of the material.
제2 성형공정은 도 3b와 같이 제2 성형금형을 통해 제1 성형품(101)의 수직부(101a)의 하부 구간에 수직부(101a)의 직경보다 작은 직경을 가지는 수직형의 수나사예정부(102a)를 성형하는 공정이다.In the second molding process, as shown in FIG. 3B, the male screw preliminary part having a diameter smaller than the diameter of the vertical portion 101a is formed in the lower section of the vertical portion 101a of the first molded product 101 through the second molding mold ( 102a).
제2 성형공정을 통해 성형된 제2 성형품(102)은 도 4b와 같이 직경이 큰 수직부(101a)와 직경이 작은 수나사예정부(102a)의 사이가 반구형으로 연결된 형태를 가진다.As shown in FIG. 4B, the second molded product 102 formed through the second molding process has a shape in which the vertical portion 101a having a large diameter and the male screw preliminary portion 102a having a small diameter are connected in a hemispherical shape.
제2 성형품(102)의 전체 길이는 제1 성형품(101)의 전체 질이에 비해 연장되고, 수나사예정부(102a)의 길이는 제2 성형품(102)의 전체 길이의 1/4 정도로 성형된다.The total length of the second molded article 102 is extended compared to the overall quality of the first molded article 101, and the length of the male screw predecessor 102a is molded to about one fourth of the total length of the second molded article 102. .
제3 성형공정은 도 3c와 같이 제3 성형금형을 통해 제2 성형품(102)의 수직부(101a)의 상부 구간에 머리예정부(103a)와 목예정부(103b)를 성형하는 공정이다.The third molding process is a process of molding the head preliminary part 103a and the wood preliminary part 103b in the upper section of the vertical portion 101a of the second molded article 102 through the third molding die as shown in FIG. 3C.
제3 성형공정을 통해 성형된 제3 성형품(103)은 도 4c와 같이 머리예정부(103a)가 상단 직경보다 하단 직경이 큰 테이퍼형으로 성형되고, 머리예정부(103a)와 수직부(101a)의 사이에 마련되는 목예정부(103)가 수직부(101a)의 직경보다 큰 직경의 수직형으로 성형되고, 하단부 직경이 목예정부(103b)의 직경보다 큰 머리예정부(103a)와 목예정부(103b)가 하부로 갈수록 직경이 작아지는 테이퍼형으로 연결된 형태를 가진다.The third molded article 103 formed through the third molding process is formed in a tapered shape in which the head preliminary part 103a has a lower diameter than the top diameter as shown in FIG. 4C, and the head preliminary part 103a and the vertical portion 101a. The wood preliminary section 103 provided between the heads is formed into a vertical shape having a diameter larger than the diameter of the vertical section 101a, and the head preliminary section 103a and the wood section section have a lower diameter than the diameter of the wood section 103b. 103b has a tapered shape in which the diameter becomes smaller toward the bottom.
제3 성형품(103)의 전체 길이는 제2 성형품(102)의 전체 길이보다 짧고, 제1 성형품(101)의 전체 길이보다 길게 성형된다.The entire length of the third molded article 103 is shorter than the entire length of the second molded article 102 and is molded longer than the entire length of the first molded article 101.
제3 성형품(103)에서 수직부(101a)의 길이는 제2 성형품(102)의 수직부(101a)의 길이에 비해 대폭 축소되고, 머리예정부(103a)의 길이는 축소된 수직부(101a)의 길이와 비슷한 길이로 성형된다.The length of the vertical portion 101a of the third molded article 103 is significantly reduced compared to the length of the vertical portion 101a of the second molded article 102, and the length of the head preliminary portion 103a is reduced. Molded to a length similar to
제3 성형공정에서는 수직부(101a)와 수나사예정부(102a)의 연결부위가 압축되고, 그에 따라 제3 성형품(103)의 수나사예정부(102a)의 길이가 제2 성형품(102)의 수나사예정부(102a)의 길이보다 약간 연장된다.In the third molding step, the connecting portion between the vertical portion 101a and the male screw preliminary portion 102a is compressed, so that the length of the male screw preliminary portion 102a of the third molded article 103 is the male screw of the second molded article 102. It extends slightly longer than the length of the predetermined portion 102a.
제4 성형공정은 도 3d와 같이 제4 성형금형을 통해 제3 성형품(103)의 머리예정부(103a)에 구형 머리부(104a)를 성형하는 동시에 제3 성형품(103)의 수나사예정부(102a)의 하단 구간에 수나사예정부(102a)의 직경보다 작은 직경의 수직형 도그포인터부(104b)를 성형하는 동시에 도그포인터부(104a)의 하단에 육각렌치홈예정부(104c)를 성형하는 공정이다.In the fourth molding process, as shown in FIG. 3D, the spherical head 104a is formed on the head preliminary part 103a of the third molded part 103 through the fourth molding die, and the male screw preliminary part of the third molded part 103 is formed ( A process of forming a vertical dog pointer portion 104b having a diameter smaller than that of the male screw preliminary portion 102a in the lower section of the 102a, and simultaneously forming a hexagon wrench groove preliminary portion 104c at the bottom of the dog pointer portion 104a. to be.
제4 성형공정을 통해 성형된 제4 성형품(104)은 도 4d와 같이 구형 머리부(104a)의 하부에 목예정부(103b), 수직부(101a), 수나사예정부(102a), 도그포인터부(104b)가 마련된 형태를 가진다.The fourth molded article 104 formed through the fourth molding process has a wood cutting unit 103b, a vertical portion 101a, a male thread cutting unit 102a, and a dog pointer unit at a lower portion of the spherical head 104a as shown in FIG. 4D. 104b is provided.
제4 성형품(104)의 도그포인터부(104b)의 하단에 마련되는 육각렌치홈예정부(104c)는 호형으로 요입된 형태를 가진다.The hexagonal wrench groove preliminary portion 104c provided at the lower end of the dog pointer portion 104b of the fourth molded article 104 has a concave shape.
제4 성형공정에서는 상대적의 긴 길이의 테이퍼형 머리예정부(103a)가 압축되어 상대적으로 짧은 길이의 구형 머리부(104a)로 변형되므로 제4 성형품(104)의 전체 길이는 제3 성형품(103)의 전체 길이보다 축소된다.In the fourth molding process, since the tapered head preliminary part 103a having a relatively long length is compressed and deformed into a spherical head part 104a having a relatively short length, the overall length of the fourth molded part 104 is determined by the third molded part 103. ) Is shrunk than the full length.
제5 성형공정은 도 3e와 같이 제5 성형금형을 통해 제4 성형품(104)의 도그포인터부(104b)의 하단에 육각렌치홈(105a)를 성형하는 공정이다.The fifth molding process is a process of molding the hexagonal wrench groove 105a at the lower end of the dog pointer portion 104b of the fourth molded article 104 through the fifth molding mold as shown in FIG. 3E.
도 4e는 제5 성형공정을 통해 성형된 제5 성형품의 정면도이다.4E is a front view of a fifth molded article molded through a fifth molding process.
제5 성형공정에서 육각렌치홈(105a)은 제4 성형품(104)의 도그포인터부(104b)의 하단에 마련된 육각렌치홈예정부(104c)를 추가 가압하는 방식으로 성형된다.In the fifth molding process, the hexagon wrench grooves 105a are formed by additionally pressing the hexagon wrench groove preliminaries 104c provided at the lower end of the dog pointer portion 104b of the fourth molded product 104.
제5 성형공정에서는 육각렌치홈(105a)만을 성형하기 때문에 육각렌치홈(105a)을 보다 정밀하게 성형할 수 있게 된다.In the fifth molding process, since only the hexagon wrench grooves 105a are molded, the hexagon wrench grooves 105a can be molded more precisely.
제5 성형공정을 통해 성형된 제5 성형품(105)의 전체 길이 및 외부 형태는 제4 성형품(104)과 비교할 때에 큰 변화가 없다.The overall length and external shape of the fifth molded article 105 molded through the fifth molding process does not change significantly when compared with the fourth molded article 104.
제6 성형공정은 제6 성형금형을 통해 제5 성형품(105)의 수직부(101a)의 하부 구간에 테이퍼부(106a)를 성형하는 공정이다.The sixth molding step is a step of molding the tapered portion 106a in the lower section of the vertical portion 101a of the fifth molded product 105 through the sixth molding die.
도 4f는 제6 성형공정을 통해 성형된 제6 성형품의 정면도이다.4F is a front view of the sixth molded article formed through the sixth molding process.
제6 성형공정에서는 상대적의 짤은 길이의 수직부(101a)의 하부 구간이 신장되어 상대적으로 긴 길이의 테이퍼부(106a)로 변형되므로 제6 성형품(106)의 전체 길이는 제8 성형품(103)의 전체 길이보다 연장된다.In the sixth molding process, since the lower section of the vertical portion 101a of the relatively short length is elongated and deformed into a taper portion 106a of a relatively long length, the overall length of the sixth molded article 106 is the eighth molded article 103. Extends beyond its entire length.
이처럼 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법은 제1~ 제6 성형공정의 단조성형단계를 통해 본 발명이 관계하는 자동차 현가장치용 스테인레스 볼스터드(10)를 제조하기에 가장 적합한 단조 성형품(106)을 제작한다.As described above, the method for manufacturing the stainless steel ball stud for the automobile suspension according to the present invention is most suitable for manufacturing the stainless steel ball stud 10 for the vehicle suspension according to the present invention through the forging process of the first to sixth molding processes. The molded article 106 is produced.
제1~ 제6 성형공정의 단조성형단계를 통해 제작된 최종 성형품인 제6 성형품(106)은 도 4f와 같이 구형 머리부(104a)의 하부에 수직형의 목예정부(103b)가 마련되고, 목예정부(103b)의 하부에 목예정부(103b)의 직경보다 작은 직경의 수직부(101a)가 마련되고, 수직부(101a)의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부(106a)가 마련되고, 테이퍼부(106a)의 하부에 테이퍼부(106a)의 하단 직경보다 작은 직경의 수나사예정부(102a)가 마련되고, 수나사예정부(102a)의 하부에 수나사예정부(102a)보다 작은 직경의 도그포인터부(104b)가 마련되고, 도그포인터부(104b)의 하단에 육각렌치홈(105a)이 마련된 형태를 가진다.The sixth molded product 106, which is the final molded product produced through the forging molding steps of the first to sixth molding processes, is provided with a vertical wood cutting unit 103b at the lower portion of the spherical head 104a, as shown in FIG. A vertical portion 101a having a diameter smaller than the diameter of the wooden projection portion 103b is provided at the lower portion of the wooden projection portion 103b, and a tapered portion 106a is provided at the lower portion of the vertical portion 101a, the diameter of which is reduced toward the lower portion. And a male screw preliminary portion 102a having a diameter smaller than the bottom diameter of the tapered portion 106a is provided at the lower portion of the tapered portion 106a, and a diameter smaller than the male screw preliminary portion 102a at the lower portion of the male screw preliminary portion 102a. The dog pointer 104b is provided, and the hexagonal wrench groove 105a is provided at the lower end of the dog pointer 104b.
이하에서 단조 성형품(106)은 단조성형단계를 통해 제작된 최종 성형품인 제6 성형품(106)을 의미한다.Hereinafter, the forged molded product 106 means the sixth molded product 106 which is the final molded product manufactured through the forged molding step.
수나사성형단계는 전조기계를 사용하여 단조 성형품(106)의 수나사예정부(102a)에 수나사를 성형하는 단계이다.The male screw forming step is a step of forming a male screw on the male screw preliminary part 102a of the forged molded product 106 by using a rolling machine.
상기 수나사성형단계는 본 발명이 속하는 기술분야에서 자명한 기술이므로 그 구체적인 설명을 생략한다.Since the male screw forming step is a known technique in the technical field to which the present invention belongs, a detailed description thereof will be omitted.
절삭 및 표면다듬질단계는 하나의 볼스터드 가공장치(100)를 통해 단조 성형품(106)의 머리부(11)를 정확한 치수로 절삭하고, 목예정부(103)를 절삭하여 목부(12)와 와셔부(13)를 성형하고, 머리부(11)에 대한 표면다듬질 작업을 수행하여 최종 자동차 현가장치용 스테인레스 볼스터드(10)를 완성하는 단계이다.In the cutting and surface finishing step, the head 11 of the forged molded product 106 is cut to an accurate dimension through a single ball stud processing device 100, and the wood cutting unit 103 is cut to cut the neck 12 and the washer part. Step (13) is molded, and the surface finishing work on the head 11 is performed to complete the final stainless steel ball stud 10 for the vehicle suspension.
절삭 및 표면다듬질단계는 볼스터드 가공장치(100)의 제1절삭기(310)를 통해 단조 성형품(106)의 머리부(104a)를 정확한 치수로 절삭하는 제1 절삭공정; 볼스터드 가공장치(100)의 제2절삭기(320)를 통해 단조 성형품(106)의 목예정부(103b)를 절삭하여 목부(12)와 와셔부(13)를 성형하는 제2 절삭공정; 볼스터드 가공장치(100)의 표면다듬질공구(330)를 통해 머리부(104a)를 다듬질하는 표면다듬질공정;을 포함한다.The cutting and surface finishing step may include a first cutting process of cutting the head 104a of the forging molded product 106 to an accurate dimension through the first cutter 310 of the ball stud processing apparatus 100; A second cutting step of forming the neck part 12 and the washer part 13 by cutting the wood preliminary part 103b of the forged molded part 106 through the second cutter 320 of the ball stud processing apparatus 100; And a surface finishing process of finishing the head 104a through the surface finishing tool 330 of the ball stud processing apparatus 100.
제2 절삭공정은 단조 성형품(106)의 목예정부(103b)의 하단부 일부를 제외한 상부를 오목하게 절삭하여 목부(12)를 성형하고, 목부(12)의 하부에 와셔부(13)가 남겨지도록 한다.In the second cutting process, the upper part of the forging molded part 106 except for a part of the lower end of the wood cutting unit 103b is concavely cut to form the neck part 12, and the washer part 13 is left behind the neck part 12. do.
도 5는 본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드 제조방법의 절삭 및 표면다듬질 단계에서 사용되는 볼스터드 가공장치 구성도이고, 도 6은 동 볼스터드 가공장치의 고정부의 요부 사시도이고, 도 7은 동 볼스터드 가공장치의 공구부의 요부 사시도이다.5 is a configuration diagram of a ball stud processing apparatus used in the cutting and surface finishing step of the method for manufacturing a stainless steel ball stud for automobile suspension according to the present invention, Figure 6 is a perspective view of the main portion of the fixing portion of the ball stud processing apparatus, 7 is a perspective view of main parts of the tool section of the ball stud processing apparatus.
본 발명에 따른 자동차 현가장치용 스테인레스 볼스터드의 절삭 및 표면다듬질 단계에서 사용되는 볼스터드 가공장치(100)는 주축대(202)에 회전 가능하도록 척(204)이 연결 설치되고, 척(204)의 전면에 조우(206)가 장착되어 척(204)의 중앙에 볼스터드(10)를 끼움 고정시킬 수 있는 고정홈(208)이 형성되는 고정부(200); 본체(304)에 위치변환 가능하도록 터렛(302)이 연결 설치되고, 터렛(302)의 전면에 다수 개의 부착구(306a)(306b)(308)가 형성되어 각각의 부착구(306a)(306b)(308)에 제1절삭기(310)와 제2절삭기(320)와 표면다듬질공구(330)가 고정 설치되는 공구부(300);를 포함한다.The ball stud processing apparatus 100 used in the cutting and surface finishing steps of the stainless steel ball stud for the vehicle suspension according to the present invention has a chuck 204 connected to the main shaft 202 so as to be rotatable, and the chuck 204 The jaw 206 is mounted on the front of the fixing part 200 is formed with a fixing groove 208 for fixing the ball stud 10 in the center of the chuck 204; The turret 302 is connected to the main body 304 so as to be changeable in position, and a plurality of attachment holes 306a, 306b, and 308 are formed on the front surface of the turret 302, so that each attachment hole 306a and 306b is formed. And a tool part 300 in which the first cutter 310, the second cutter 320, and the surface finishing tool 330 are fixed to the blade 308.
상기 볼스터드 가공장치(100)에서 공구부(300)의 표면다듬질공구(330)는 부착구(308)에 장착되는 공구홀더(332); 샤프트(336)에 의해 상기 공구홀더(332)에 연결 설치되는 초경휠(334); 샤프트(336)의 내부에 관통 형성되는 작동유 배출공(344)을 포함한다.The surface finishing tool 330 of the tool unit 300 in the ball stud processing apparatus 100 includes a tool holder 332 mounted to the attachment hole 308; Carbide wheels 334 connected to the tool holder 332 by a shaft 336; It includes a hydraulic fluid discharge hole 344 formed through the shaft 336.
상기 볼스터드 가공장치(100)는 단조단계를 거친 단조 성형품(106)의 절삭공정과 표면다듬질공정을 하나의 가공장치로서 일괄적으로 수행한다.The ball stud processing apparatus 100 performs a cutting process and a surface finishing process of the forged molded product 106 that has undergone the forging step as a processing unit.
즉, 단조단계를 거친 단조 성형품(106)을 가공하기 위하여 제어부(420)의 제어 하에 고정부(200) 및 공구부(300)를 구동 제어하여 머리부(104a)와 목예정부(103b)를 절삭하는 절삭가공을 1차적으로 수행하고, 그 다음에 2차적으로 머리부(104a)의 평균표면조도를 일정범위(예를 들면 01∼05a의 범위)에서 균일하게 나타나도록 표면다듬질가공을 수행한다.That is, the head part 104a and the wood cutting part 103b are cut by driving control of the fixing part 200 and the tool part 300 under the control of the control part 420 in order to process the forged molded product 106 which has undergone the forging step. The cutting is performed first, and then the surface finishing is performed so that the average surface roughness of the head 104a is uniformly displayed in a predetermined range (for example, in the range of 01 to 05a).
고정부(200)는 본체인 주축대(202)와 회전하는 척(204)과 단조 성형품(106)을 직접적으로 고정하는 다수의 조우(206)를 포함한다.The fixing part 200 includes a headstock 202 which is a main body, a plurality of jaws 206 which directly fix the rotating chuck 204 and the forged molded product 106.
고정부(200)의 주축대(202)는 도 5와 같이 제1구동부(430)와 연결 구성하고, 볼스터드 가공장치(100)에서 요구하는 속도로 회전하는 척(204)의 정면 중앙에는 도 6과 같이 3개의 조우(206)를 균등간격 방사형으로 배치하여 고정홈(208)을 형성한다.The headstock 202 of the fixing part 200 is connected to the first driving part 430 as shown in FIG. 5, and the front center of the chuck 204 rotating at the speed required by the ball stud processing apparatus 100 is shown in FIG. As shown in Fig. 6, the three jaws 206 are arranged at equal intervals radially to form the fixing groove 208.
공구부(300)는 도 7과 같이 드럼형의 본체(304)와 원반형인 터렛(302)을 포함하고, 터렛(302)에는 여러 종류의 공구들을 고정시킬 수 있도록 다수의 부착구(306a)(306b)(308)가 마련된다.The tool part 300 includes a drum-shaped main body 304 and a disk-shaped turret 302 as shown in FIG. 7, and a plurality of attachment holes 306a (to fix the various types of tools to the turret 302) ( 306b) 308 are provided.
상기 다수의 부착구(306a)(306b)(308)들은 각 공구들에 적합한 형태를 갖는데, 제1절삭기(310)와 제2절삭기(320)를 고정하는 두 개의 부착구(306a)(306b)에는 끼움홈이 마련되고, 표면다듬질공구(330)를 끼움 고정하는 부착구(308)에는 결착관통공이 마련된다.The plurality of attachment holes 306a, 306b, and 308 have a shape suitable for each tool, and two attachment holes 306a and 306b for fixing the first cutter 310 and the second cutter 320. The fitting groove is provided, and the attachment hole 308 for fixing the surface finishing tool 330 is provided with a binding through-hole.
볼스터드 가공장치(100)는 도 5와 같이 외부에서 조작부(410)를 통괄 조작하면 고정부(200) 및 공구부(300)를 동시에 제어하는 제어부(420)가 제1구동부(430) 및 제2구동부(440)를 작동시킨다.When the ball stud processing apparatus 100 collectively manipulates the operation unit 410 from the outside as illustrated in FIG. 5, the control unit 420 simultaneously controlling the fixing unit 200 and the tool unit 300 may include the first driving unit 430 and the first driving unit 430. Operate the second drive unit 440.
이때 제1구동부(430)는 고정부(200)를 구동하는 모터(450a)를 작동시켜 미리 설정된 프로그램대로 고정부(200)가 회전하도록 하고, 제2구동부(440)는 공구부(300)를 구동하는 모터(450b)를 작동시켜 머리부(104a)를 절삭하는 제1절삭기(310), 목예정부(103b)를 절삭하는 제2절삭기(320), 및 머리부(104a)를 표면다듬질가공하는 표면다듬질공구(330)를 미리 설정된 프로그램에 따라 순차적으로 공구부(300)가 위치 변환하도록 한다.At this time, the first driving unit 430 operates the motor 450a for driving the fixing unit 200 to rotate the fixing unit 200 according to a preset program, and the second driving unit 440 operates the tool unit 300. Surface finishing the first cutter 310 to cut the head 104a by operating the driving motor 450b, the second cutter 320 to cut the wood cutting unit 103b, and the head 104a The surface finishing tool 330 sequentially positions the tool unit 300 according to a preset program.
제1,제2절삭기(310)(320)의 절삭가공 과정에서는 외부에 별도 구성한 절삭유 분사기(600)로부터 절삭유를 절삭날에 분사하고, 표면다듬질공구(330)에 의한 표면다듬질 과정에서는 다음에 설명할 표면다듬질공구(330)의 내부에 구성되는 작동유 배출공(344)으로부터 작동유가 초경휠(334)로 적당량씩 흐르도록 한다.In the cutting process of the first and second cutters 310 and 320, the cutting oil is sprayed onto the cutting edge from the cutting oil injector 600 which is configured externally, and the surface finishing process by the surface finishing tool 330 will be described later. The hydraulic fluid flows from the hydraulic oil discharge hole 344 formed in the surface finishing tool 330 to the cemented carbide wheel 334 by an appropriate amount.
공구부(300)의 표면다듬질공구(330)는 볼스터드(10)의 평균표면조도 결정에 가장 중요한 역할을 한다.The surface finishing tool 330 of the tool 300 plays the most important role in determining the average surface roughness of the ball stud 10.
도 8은 동 볼스터드 가공장치의 표면다듬질공구의 부분 단면 구성도이고, 도 9a 및 도 9b는 동 볼스터드 가공장치의 표면다듬질공구의 초경휠을 도시한 도면이다.8 is a partial cross-sectional view of the surface finishing tool of the ball stud processing apparatus, and FIGS. 9A and 9B are views illustrating a carbide wheel of the surface finishing tool of the ball stud processing apparatus.
공구부(300)의 표면다듬질공구(330)는 도 8과 같이 터렛(304)의 부착구(308)에 장착되는 공구홀더(332)와 초경휠(334), 그리고 이들을 결합하기 위하여 공구홀더(332)와 초경휠(334)을 관통하는 샤프트(336)를 포함한다.The surface finishing tool 330 of the tool 300 includes a tool holder 332 and a cemented carbide wheel 334 mounted to the mounting hole 308 of the turret 304 as shown in FIG. 332 and shaft 336 penetrating the carbide wheels 334.
초경휠(334)의 내부의 샤프트(336)와 초경휠(334) 사이에는 베어링(338)이 설치되고, 초경휠(334)의 전후의 샤프트(336) 및 공구홀더(332) 사이에는 와셔(340)가 설치된다.A bearing 338 is installed between the shaft 336 inside the cemented carbide wheel 334 and the cemented carbide wheel 334, and a washer is disposed between the shaft 336 and the tool holder 332 before and after the cemented carbide wheel 334. 340 is installed.
샤프트(336)의 내부에 작동유 배출공(344)을 구성하여, 작동유 배출공(344)을 통하여 초경휠(334)로 작동유가 일정량씩 배출되도록 하고 작동유 배출공(344)의 배출구 반대측 단부에는 밀폐뚜껑을 갖는 작동유 주입구(342)를 구성한다.The hydraulic oil discharge hole 344 is formed inside the shaft 336 to allow the hydraulic oil to be discharged by a predetermined amount through the hydraulic oil discharge hole 344 to the cemented carbide wheel 334, and the hydraulic oil discharge hole 344 is closed at an end opposite to the discharge port of the hydraulic oil discharge hole 344. A hydraulic oil inlet 342 having a lid is configured.
표면다듬질공구(330)는 초경휠(334)의 외측 둘레면 반경(R)의 형성이 매우 중요하며, 이는 상기 반경(R)의 정도가 초경휠(334)과 볼스터드(10)의 머리부(11)와의 접촉률을 결정하기 때문이다.The surface finishing tool 330 is very important for the formation of the outer peripheral radius (R) of the carbide wheel 334, the degree of the radius (R) of the carbide wheel 334 and the head of the ball stud 10 This is because the contact ratio with (11) is determined.
초경휠(334)의 외측 둘레면 반경(R)이 너무 작으면 접촉률이 낮아서 표면다듬질 시간이 길어지고 반경(R)이 너무 크면 접촉률이 높아서 머리부(11)에 줄무늬가 생기고 표면 조도가 커지게 된다.If the outer circumferential surface radius R of the cemented carbide wheel 334 is too small, the contact rate is low, so that the surface finishing time is long, and if the radius R is too large, the contact rate is high, resulting in streaks and high surface roughness. do.
표면다듬질공구(330)의 초경휠(334) 외측 둘레면의 반경(R)은 15∼3㎜ 정도로 형성하는 것이 바람직하며, 표면다듬질공정에서 볼스터드(10)의 머리부(11)의 평균표면조도가 01∼05a가 되도록 가공하는 것이 바람직하다.The radius R of the outer circumferential surface of the cemented carbide wheel 334 of the surface finishing tool 330 is preferably about 15 to 3 mm, and the average surface of the head 11 of the ball stud 10 in the surface finishing process. It is preferable to process so that roughness may be 01-05a.
이상 본 발명자에 의해서 이루어진 발명을 상기 실시 예에 따라 구체적으로 설명하였지만, 본 발명은 상기 실시 예에 한정되는 것은 아니고 그 요지를 이탈하지 않는 범위에서 여러 가지로 변경 가능한 것은 물론이다.As mentioned above, although the invention made by the present inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

Claims (8)

  1. 구형의 머리부(11)의 하부 둘레에 오목한 목부(12)가 마련되고, 목부(12)의 하단에 와셔부(13)가 마련되고, 와셔부(13)의 하부에 와셔부(13)의 직경보다 작은 직경의 직선부(14)가 마련되고, 직선부(14)의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부(15)가 마련되고, 테이퍼부(15)의 하부에 테이퍼부(15)의 하단 직경보다 작은 직경의 수나사부(16)가 마련되고, 수나사부(16)의 하부에 수나사부(16)의 직경보다 작은 직경의 도그포인터부(17)가 마련되고, 도그포인터부(17)의 하단에 육각렌치홈(18)이 마련된 형태의 자동차 현가장치용 스테인레스 볼스터드(10)를 제조하기 위한 자동차 현가장치용 스테인레스 볼스터드 제조방법으로,A concave neck portion 12 is provided around the lower portion of the spherical head 11, a washer portion 13 is provided at the lower end of the neck portion 12, and a washer portion 13 is disposed below the washer portion 13. A straight portion 14 having a diameter smaller than the diameter is provided, and a tapered portion 15 is provided below the straight portion 14 to reduce the diameter toward the lower portion thereof, and a tapered portion 15 is provided below the tapered portion 15. A male screw portion 16 having a diameter smaller than the lower end diameter of the bottom portion) is provided, and a dog pointer portion 17 having a diameter smaller than the diameter of the male screw portion 16 is provided at the lower portion of the male screw portion 16, and a dog pointer portion ( 17) a method for manufacturing a stainless steel ball stud for a vehicle suspension for manufacturing a stainless ball stud 10 for a vehicle suspension provided with a hexagon wrench groove 18 at the bottom of the
    다수의 성형금형이 동시 작동하고, 선행 금형의 단조 성형품이 후행 금형으로 이송되는 프로그레시브 프레스기계를 통해 상단 직경과 하단 직경이 동일한 원기둥형 스테인레스 소재를 단조 성형하여 단조 성형품(106)을 제작하는 단조성형단계;Forging molding for producing the forging molded part 106 by forging a cylindrical stainless material having the same upper diameter and lower diameter by a progressive press machine in which a plurality of molding dies operate simultaneously and the forging molded parts of the preceding mold are transferred to the subsequent mold. step;
    단조성형단계에서 제작된 단조 성형품(106)에 수나사를 성형하는 수나사성형단계;A male screw molding step of molding a male screw in the forged molded product 106 produced in the forging molding step;
    하나의 볼스터드 가공장치(100)를 통해 단조 성형품(106)을 절삭하여 머리부(11)를 정확한 치수로 절삭하고, 목부(12)와 와셔부(13)를 성형하고, 머리부(11)에 대한 표면다듬질 작업을 수행하여 자동차 현가장치용 스테인레스 볼스터드(10)를 완성하는 절삭 및 표면다듬질단계;를 포함하는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.The forging molded product 106 is cut through one ball stud processing device 100 to cut the head 11 to an accurate dimension, and the neck 12 and the washer 13 are molded, and the head 11 is Method for producing a stainless ball stud for a vehicle suspension, characterized in that it comprises a; cutting and surface finishing step of completing the surface finishing work for the stainless steel ball stud for the vehicle suspension (10).
  2. 제1항에 있어서, The method of claim 1,
    단조성형단계는,Forging molding stage,
    구형 머리부(104a)의 하부에 수직형의 목예정부(103b)가 마련되고, 목예정부(103b)의 하부에 목예정부(103b)의 직경보다 작은 직경의 수직부(101a)가 마련되고, 수직부(101a)의 하부에 하부로 갈수록 직경이 축소되는 테이퍼부(106a)가 마련되고, 테이퍼부(106a)의 하부에 테이퍼부(106a)의 하단 직경보다 작은 직경의 수나사예정부(102a)가 마련되고, 수나사예정부(102a)의 하부에 수나사예정부(102a)보다 작은 직경의 도그포인터부(104b)가 마련되고, 도그포인터부(104b)의 하단에 육각렌치홈(105a)이 마련된 형태의 단조 성형품(106)을 제작하는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.A vertical wood cutting unit 103b is provided below the spherical head 104a, and a vertical portion 101a having a diameter smaller than the diameter of the wood cutting unit 103b is provided below the wooden cutting unit 103b. The lower portion of the portion 101a is provided with a tapered portion 106a, the diameter of which is reduced toward the lower portion, and the male screw preliminary portion 102a having a diameter smaller than the lower end diameter of the tapered portion 106a is provided at the lower portion of the tapered portion 106a. A dog pointer portion 104b having a smaller diameter than the male thread precession 102a is provided below the male screw predecessor 102a, and a hexagon wrench groove 105a is provided at the lower end of the dog pointer portion 104b. Stainless steel ball stud manufacturing method for a vehicle suspension, characterized in that for producing a forged molded article (106).
  3. 제2항에 있어서, The method of claim 2,
    단조성형단계는,Forging molding stage,
    6단의 동시 성형공정으로 이루어지고, 절단된 소재가 제1 성형금형으로 이송되고, 제1 성형품(101)이 제2 성형금형으로 이송되고, 제2 성형품(102)이 제3 성형금형으로 이송되고, 제3 성형품(103)이 제4 성형금형으로 이송되고, 제4 성형품(104)이 제5 성형금형으로 이송되고, 제5 성형품(105)이 제6 성형금형으로 이송되고, 제6 성형품(106)이 외부로 배출되도록 하는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.It consists of six stages of simultaneous molding process, the cut material is transferred to the first molding mold, the first molded article 101 is transferred to the second molding mold, and the second molded article 102 is transferred to the third molding mold. The third molded article 103 is transferred to the fourth molding die, the fourth molded article 104 is transferred to the fifth molding mold, the fifth molded article 105 is transferred to the sixth molding mold, and the sixth molded article. Stainless steel ball stud manufacturing method for a vehicle suspension, characterized in that the 106 to be discharged to the outside.
  4. 제3항에 있어서,The method of claim 3,
    단조성형단계는,Forging molding stage,
    제1 성형금형을 통해 상단 직경과 하단 직경이 동일한 일정길이의 소재를 전체가 상단 직경과 하단 직경이 동일한 수직부(101a)로 이루어지고, 수직부(101a)의 하단 모서리에 작은 직경의 라운드부가 형성된 형태의 제1 성형품(101)으로 성형하는 제1 성형공정;Through the first molding die, the entire length of the material having the same length as the top diameter and the bottom diameter is made up of the vertical portion 101a having the same top diameter and the bottom diameter, and a small diameter round portion is formed at the bottom edge of the vertical portion 101a. A first molding step of molding the first molded article 101 having a formed shape;
    제2 성형금형을 통해 제1 성형품(101)을 수직부(101a)의 하부 구간에 수직부(101a)의 직경보다 작은 직경을 가지는 수직형의 수나사예정부(102a)가 마련되고, 수직부(101a)와 수나사예정부(102a)의 사이가 반구형으로 연결된 형태의 제2 성형품(102)으로 성형하는 제2 성형공정;A vertical male screw preliminary section 102a having a diameter smaller than the diameter of the vertical portion 101a is provided in the lower section of the vertical portion 101a through the second molding die, and the vertical portion ( A second molding step of molding the second molded article 102 having a hemispherical shape between 101a) and the male screw preliminary section 102a;
    제3 성형금형을 통해 제2 성형품(102)을 수직부(101a)의 상부 구간에 상단 직경보다 하단 직경이 큰 테이퍼형의 머리예정부(103a)와 수직부(101a)의 직경보다 큰 직경의 수직형의 목예정부(103b)가 마련되고, 머리예정부(103a)와 목예정부(103b)가 하부로 갈수록 직경이 작아지는 테이퍼형으로 연결된 제3 성형품(103)으로 성형하는 제3 성형공정;Through the third molding die, the second molded article 102 is formed in the upper section of the vertical portion 101a with a diameter larger than the diameter of the tapered head preliminary portion 103a and the vertical portion 101a having a lower diameter than the upper diameter. A third molding process in which a vertical wood cutting unit 103b is provided, and the head preliminary processing unit 103a and the wood cutting unit 103b are formed into a third molded article 103 connected in a tapered shape, the diameter of which decreases toward a lower portion thereof;
    제4 성형금형을 통해 제3 성형품(103)을 머리예정부(103a)에 구형 머리부(104a)가 성형되고, 수나사예정부(102a)의 하단 구간에 수나사예정부(102a)의 직경보다 작은 직경의 수직형 도그포인터부(104b)가 성형되고, 도그포인터부(104a)의 하단에 육각렌치홈예정부(104c)가 성형된 형태의 제4 성형품(104)으로 성형하는 제4 성형공정;The spherical head portion 104a is formed on the head preliminary section 103a by the fourth molding die, and the lower portion of the male thread preliminary section 102a is smaller than the diameter of the male thread preliminary section 102a. A fourth molding step of forming a vertical dog pointer 104b having a diameter, and molding the fourth molded article 104 having a hexagonal wrench groove preliminary 104c formed at a lower end of the dog pointer 104a;
    제5 성형금형을 통해 제4 성형품(104)을 도그포인터부(104b)의 하단에 육각렌치홈(105a)이 성형된 형태의 제5 성형품(105)으로 성형하는 제5 성형공정;A fifth molding step of forming the fourth molded article 104 into a fifth molded article 105 having a hexagonal wrench groove 105a formed at a lower end of the dog pointer 104b through a fifth molding die;
    제6 성형금형을 통해 제5 성형품(105)을 수직부(101a)의 하부 구간에 테이퍼부(106a)가 성형된 형태의 제6 성형품(106)으로 성형하는 제6 성형공정;을 포함하는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.And a sixth molding process of molding the fifth molded article 105 into a sixth molded article 106 having a tapered portion 106a formed in a lower section of the vertical portion 101a through a sixth molding die. Stainless steel ball stud manufacturing method for a vehicle suspension characterized in that.
  5. 제1항에 있어서,The method of claim 1,
    절삭 및 표면다듬질단계는,The cutting and finishing steps
    볼스터드 가공장치(100)의 제1절삭기(310)를 통해 단조 성형품(106)의 머리부(104a)를 정확한 치수로 절삭하는 제1 절삭공정;A first cutting process of cutting the head portion 104a of the forged molded product 106 to an accurate dimension through the first cutter 310 of the ball stud processing apparatus 100;
    볼스터드 가공장치(100)의 제2절삭기(320)를 통해 단조 성형품(106)의 목예정부(103b)를 절삭하여 목부(12)와 와셔부(13)를 성형하는 제2 절삭공정;A second cutting step of forming the neck part 12 and the washer part 13 by cutting the wood preliminary part 103b of the forged molded part 106 through the second cutter 320 of the ball stud processing apparatus 100;
    볼스터드 가공장치(100)의 표면다듬질공구(330)를 통해 머리부(104a)를 다듬질하는 표면다듬질공정;을 포함하는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.Stainless steel ball stud manufacturing method for a vehicle suspension comprising a; surface finishing process for finishing the head 104a through the surface finishing tool (330) of the ball stud processing apparatus (100).
  6. 제5항에 있어서,The method of claim 5,
    절삭 및 표면다듬질단계는,The cutting and finishing steps
    주축대(202)에 회전 가능하도록 척(204)이 연결 설치되고, 척(204)의 전면에 조우(206)가 장착되어 척(204)의 중앙에 볼스터드(10)를 끼움 고정시킬 수 있는 고정홈(208)이 형성되는 고정부(200); 본체(304)에 위치변환 가능하도록 터렛(302)이 연결 설치되고, 터렛(302)의 전면에 다수 개의 부착구(306a)(306b)(308)가 형성되어 각각의 부착구(306a)(306b)(308)에 제1절삭기(310)와 제2절삭기(320)와 표면다듬질공구(330)가 고정 설치되는 공구부(300);를 포함하는 볼스터드 가공장치(100)에 의해 진행되는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.The chuck 204 is rotatably connected to the main shaft 202, and the jaws 206 are mounted on the front surface of the chuck 204 so that the ball stud 10 can be fitted in the center of the chuck 204. A fixing part 200 in which a fixing groove 208 is formed; The turret 302 is connected to the main body 304 so as to be changeable in position, and a plurality of attachment holes 306a, 306b, and 308 are formed on the front surface of the turret 302, so that each attachment hole 306a and 306b is formed. The first cutting machine 310, the second cutting machine 320 and the surface finishing tool 330 is fixed to the 308, the tool portion 300 is fixed to be carried out by the ball stud processing apparatus 100 including; Stainless steel ball stud manufacturing method characterized in that the vehicle suspension.
  7. 제6항에 있어서,The method of claim 6,
    공구부(300)의 표면다듬질공구(330)는 터렛(304)의 부착구(308)에 장착되는 공구홀더(332); 단조 성형품(106)의 머리부(104a)를 표면다듬질가공하는 초경휠(334), 공구홀더(332)와 초경휠(334)을 결합하는 샤프트(336);를 포함하는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.The surface finishing tool 330 of the tool part 300 includes a tool holder 332 mounted to the attachment hole 308 of the turret 304; Car suspension, characterized in that it comprises a; carbide wheel 334 for surface finishing the head 104a of the forging molded article 106, a shaft 336 for coupling the tool holder 332 and the carbide wheel 334; Method for manufacturing stainless ball studs for the device.
  8. 제6항에 있어서,The method of claim 6,
    볼스터드 가공장치(100)는 고정부(200) 및 공구부(300)를 동시에 제어하는 제어부(420)가 제1구동부(430) 및 제2구동부(440)를 작동시키고, 제1구동부(430)가 고정부(200)를 구동하는 모터(450a)를 작동시켜 미리 설정된 프로그램대로 고정부(200)가 회전하도록 하고, 제2구동부(440)가 공구부(300)를 구동하는 모터(450b)를 작동시켜 머리부(104a)를 절삭하는 제1절삭기(310), 목예정부(103b)를 절삭하는 제2절삭기(320), 및 머리부(104a)를 표면다듬질가공하는 표면다듬질공구(330)를 미리 설정된 프로그램에 따라 순차적으로 공구부(300)가 위치 변환하도록 하는 것을 특징으로 하는 자동차 현가장치용 스테인레스 볼스터드 제조방법.In the ball stud processing apparatus 100, a control unit 420 controlling the fixing unit 200 and the tool unit 300 simultaneously operates the first driving unit 430 and the second driving unit 440, and the first driving unit 430. ) Operates the motor 450a for driving the fixing part 200 so that the fixing part 200 rotates according to a preset program, and the second driving part 440 drives the tool part 300. The first cutting machine 310 cutting the head 104a by operating the second cutting machine 320, the second cutting machine 320 cutting the wood cutting unit 103b, and the surface finishing tool 330 for finishing the head 104a. Stainless steel ball stud manufacturing method for a vehicle suspension, characterized in that to sequentially convert the position of the tool unit 300 according to a preset program.
PCT/KR2018/006707 2018-05-17 2018-06-14 Method for manufacturing stainless ball stud for vehicle suspension device WO2019221327A1 (en)

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CN111889964B (en) * 2020-06-28 2022-04-08 长春进发汽车零部件有限公司 Manufacturing method of automobile transmission filter shell
CN112974610B (en) * 2021-03-04 2022-07-01 盐城市明佳机械有限公司 Precision forging and stamping forming process of motor output shaft
CN114101549A (en) * 2021-11-09 2022-03-01 宾科汽车紧固件（昆山）有限公司 Ball screw forming method and forming device and ball screw
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