Classifications

• • 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
  • B21K11/00—Making cutlery wares; Making garden tools or the like
  • B21K11/02—Making cutlery wares; Making garden tools or the like knives
• • 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
  • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
• • 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
  • B21J9/025—Special design or construction with rolling or wobbling dies
• • 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
  • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
  • B21H7/10—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons knives; sickles; scythes
• • 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
  • B21H9/00—Feeding arrangements for rolling machines or apparatus manufacturing articles dealt with in this subclass

Definitions

• the invention relates to a method for producing metal articles from metal blanks, or the metal blank is positioned between opposing roller surfaces of two rollers that can be rolled against one another from an initial position into an end position, wherein a negative form of the roller surface is achieved by at least one metal article is set up, the positioning of the metal blank in the starting position of the rollers in the area of the recess being carried out, the rollers then being rolled against one another from the starting position m in the end position, the metal blank being rolled in the course of cold deformation shaping the metal article, and wherein the shaped metal article is removed from the rollers.
• the invention further relates to a device for performing such a method.
• the invention relates to metalworking tech-r-k and can be used in the production of various products ⁇ -rcr- a rolling process.
• the cold rolling process for producing a product from blanks is known, characterized in that the dimensional deviation of the blank from the nominal value or nominal value is determined -.n ⁇ the position of the blank with respect to the rollers which are fastened on the rotating elements arranged on the base plate, Correspondingly corrected, whereupon the circuit board is plastically deformed by the heating surfaces (SU, AI, 956119).
• a disadvantage is the complexity of the production of products with different, variable cross-sectional areas.
• This device is for the production of oval
• Mavering and this device are suitable for the production of stock products, for example knife edges, by a single (, az-sficr- nacn below.
• the drums are rotated by the Drenr-eDel r.acn below, whose axis of rotation corresponds to the longitudinal direction of the blank plate, which corresponds to the longitudinal direction of the product to be produced, the roll-forming surfaces are designed in such a way that products with different thicknesses - according to the length of their transverse direction - but - with the same thickness - can be produced according to the length of their longitudinal direction
• the technical solution can be used to reduce the running time of cold rolling of products thanks to the lengthening of those by rolling.
• the shape of the product with simultaneous exposure through the profiled roll forming surface on the blank plate in particular on more zones with greater deformation, where the thickness of the product to be manufactured is to be smaller, and on the same with smaller deformation, where the thickness of the product to be manufactured is to be distorted, characterized mainly by bends in the Longitudinal direction of the blank.
• the invention is based on the technical problem of specifying a method and a device for producing metal articles from essentially rectangular metal blanks, which allow complex-shaped metal articles to be produced in one machining step in a simple manner.
• the object to be achieved by the invention is, in particular, to provide such a cooling or cold rolling process and the device for its implementation which allow the manufacture of products with complicated configurations, thicknesses which change in the transverse and longitudinal directions, enable.
• the invention is characterized in that the recess in directions parallel to a roll axis has at least m partial area and m rolling direction of the rolls variable course of the depth is formed.
• Variable course of depth m direction parallel to a roll axis in a partial area means that the course is not necessarily variable over the entire width (orthogonal to the roll axis).
• the depth is the distance between two main surfaces of the recess.
• the negative form can only be set up in a roller.
• the negative form can, however, also be divided into two recesses, in which case each oak is set up on a roller and faces towards the surface. It goes without saying that the kinematics of the unrolling are then controlled in such a way that the two recesses are, as it were, rolled back together in such a way that a metal object with the outer shape of the negative form is obtained.
• the course of the depth of the recess in the direction parallel to a roller axis is decreasing, preferably decreasing monotonously.
• the course of the depth in the rolling direction of the rolls is preferably decreasing, preferably monotonically decreasing.
• the arrangement is preferably such that gaps defined at the initial position of the roller surfaces and when the metal tube is positioned at the height of the maximum depth in the rolling direction are set up between the main surfaces of the recess and the main surfaces of the metal blank.
• the technical result or advantage which was obtained in the implementation of this method is the reduction of labor in the manufacture of products with -complicated configurations and their increase in quality.
• the technical result or advantage obtained by the device is the expansion of its functional possibilities and its arsenal of technical means for the production of products with complicated configurations, which is due to the preliminary roller tightening and continuous compression of the blank Rolling zones of maximum deformation ⁇ es the blank to the zones of its minimum deformation is achieved.
• the blank plate profile m in accordance with the product profile and the condition of the equality of cross-sectional areas or. Volume) of the product before and after compression.
• a gap is formed between the wide surfaces of the blank plate and the roll forming surfaces by the distance 1 between
• the non-shaping roller cylinder surface is preliminarily rolled with the
• JL compressive force compresses at least 20 1 of the value of the compressive force required to deform a blank plate.
• the solution of the task by the known device for the production of products, consisting of a base plate, rotary levers, the rollers, on which a blank plate is arranged and whose shaping surfaces correspond to the different thicknesses of the product - the length of its transverse direction - and the according to the invention takes place in that the roller shaping surfaces are designed with the profiles that correspond to the different thicknesses of the product - according to the length of its longitudinal direction; an elastic support is also supplied and at least at one of the rolls there is an outlet, the bottom of which is transverse to the lower edge of a roll forming surface; the elastic support is arranged at the roller outlet, and it is attached to the rotary lever from one side and further projects from the roller outlet from the roller outlet; the elastic support is suitable for holding the blank plate between the roll forming surfaces with the gap between them before the movement of rotary levers when compressing the blank plate, the roller forming surface profile
• the task was solved by creating a spam between the wide surfaces of the blank plate and the roll forming surfaces before the compression of the plate, and by executing the roller forming surfaces in such a way that the blank plate was continuously moved from the zones of its greater deformation to the zones of its smaller deformation been deformed
• Fig. 1 shows m the axonometry of the blank and the product
• Fig. 2 the profile of the blank plate with its cross sections before the upsetting
• Fig. 3 the product and its cross-sections after upsetting
• Fig. 4 the starting position of the blank with respect to ⁇ er rolls
• Fig. 5 the starting position of the blank with respect to the roll forming surfaces, enlarged on Fig. 4;
• Fig. 8 the blank with the rolls at the beginning ⁇ er ⁇ plasti deformation of the rule plate;
• Fig. 9 the same as that of Fig. 8 - m of the intermediate position;
• FIGS. 1, 2 consists in the manufacture of a blank plate 1 (on FIG. 1 it is shown by dotted lines) from a plate with unchangeable thickness and opposite widths 2 and 3 areas.
• the product 4 (FIG. 3) to be produced by the registered method is also shown with variable thicknesses by a continuous line.
• the axis X is a longitudinal direction of the blank 1 and the product 4 and the axis Y is their transverse direction.
• the raw material 1 can be produced by any method: 5 by shearing the plate after cutting the plate, punching, etc
• the blank 1 is fed between the rollers 5 (Fig. 4, 5, 6).
• the wide surfaces 2 of the blank plate 1 are directed towards the rollers 5.
• the long longitudinal axis of the blank plate 1 should be parallel to the longitudinal axes of the rollers 5 (joint axes) with their longitudinal direction.
• the shaping surfaces 6 of the rollers 5 correspond to the different thicknesses of the product 4 - the length of its transverse direction (to the side of the edge of the knife tip Fig. 1).
• the lever 7 is used to move the rollers 5.
• the support 8 holds the blank plate 1 firmly between the shaping surfaces 6 of the rollers 5, a gap (FIG. 5, ⁇ i between the wide surfaces 2 of the blank plate 1 and the Forming surfaces 6 of the rolls 5.
• a smaller distance 1 is chosen between the forming surfaces 6 of the rolls 5 at the level of the narrow lower surface 3 of the blank plate m in the zone of their maximum deformation than the distance L between the forming surfaces of the rolls at the Plane of the narrow bottom surface 3 of the blank plate 1 in the zone of its minimal deformation, it follows that the compression of the blank 1 starts from the bottom edges of the narrow surface 3 of the blank plate 1.
• the gap between the blank plate 1 and the shaping surfaces 6 of the rollers 5 is necessary for the continuous action by the roller shaping surfaces 6 on the pole 1 - depending on the required deformation size for each product 4.
• first determine the size of the maximum deformation of the blank 1, according to this size we determine the angular position of the rollers 5 and the blank position 1 with respect to the shaping surfaces 6 of the rollers 5.
• ⁇ ⁇ - tolerance value for manufacturing defects in the thickness of the ring plate 1 and for its surface quality.
• the value is fue: the free arrangement of the blank plate 1 between the shaping surfaces ⁇ of the rollers 5 is required and is approximately 0.1 ... 0.5 mm depending on the thickness of the blank plate 1. The thicker the blank plate 1 and its larger Tolerance ranges sm ⁇ , the larger.
• the length of the gap 1 S + ⁇ between the shaping surfaces 6 of the rollers 5 corresponds to FIG. 4) the angular position of the radius R of the rotary lever "with respect to the straight line that links the articulation axes.
• ⁇ arccos [1 - (S - t xmm + ⁇ ) / (2R)], where R - lever length with the thickness of the non-shaping cylinder surface the roller 5 (Fig. 4).
• a minimum (FIG. 6) distance 1 between the shaping surfaces 6 of the rollers 5) must be selected, in that the gap should be such that the blank plate 1 can be fed freely between the shaping surfaces 6.
• the minimal plastic deformation t xmax the wide part of the knife edge next to the handle - on the Fig. 1 v a maximum (Fig. 5, 6) distance L between the Select shaping surfaces 6 of the rollers 5 in order to complete the deformation of the entire product 4 and to at least deform the plate after the upsetting.
• the value of the compressive force P AAA of the preliminary roller pressure should be at least 20 of the value of the maximum deformation force of Rohimg 1. After the attempts it turned out that the value P AAA is ..aenit due to the true stress values as well as the deformation area of the blank 1. The higher the yield strength of the material and the larger the deformation area of the blank smo, the higher the value of the compressive force P AAA of the preliminary rolling pressure should be. Usually this value is in the Inter v all of 20 - ice for 38 - from the maximum by the system (waltz 5, lever 7, base plate) during the deformation of the blank 1 to be received pressing force.
• the blank 1 is compressed by the rollers 5.
• the rollers 5 are moved by the levers
• the blank plate is deformed 1 m in the zone, where the plate thickness can be reduced to a maximum of t xmm (Fig. 1). Then continuously - but continuously -. _rd the compression of the Ronlingsplatte made 1 m of the zones where their L ⁇ c ⁇ e increases continuously.
• the thickness of the product t xmm can be equal to the thickness t ymin.
• such zones can be located at different places in view of the longitudinal direction of the raw material 1 or of the product 4; however, the described method of shaping the product 4 by the rollers 5 has been retained, otherwise, as tests have shown, the shape of the product 4 is distorted with respect to its longitudinal direction.
• the product 4 has become saber-like, and other types of products 4 have characteristics of curvature in different directions with regard to the longitudinal curvature, which is connected with the thickness of the blank 1 during the rolling process - according to the length in the longitudinal direction of the plate.
• the blank plate 1 is plastically deformed during the compression of the blank by the rollers 5 first through the shaping surfaces 6 of the rollers 5 in the zone of their maximum deformation, which corresponds to the minimum thickness t xmm of the product 4 (FIG. 1) - the length of its longitudinal direction after - corresponds. Then the Pohlmgsplatte 1 is continuously deformed by the forming surfaces 6 m in the zones of their intermediate deformations ⁇ , which continuously correspond to the thickness enlargement of the product 4 - according to the length of its longitudinal direction. The blank plate 1 is finally deformed by the shaping surfaces 6 of the rollers 5 m of the zone of its minimum deformation, which corresponds to the maximum thickness t xmax of the product 4 - the length of its longitudinal direction.
• the device for the production of the product 4 consists of the base plate 9, the rotary levers 7, the rollers 5 (FIG. N).
• This device corresponds to the device described above in the information source (RU, Cl, 2041005), but which is additionally used for the purpose of administration of the registered process is reworked.
• the rollers 5 are used to arrange the blank plate. suitable in between, the forming surfaces 6 of the rollers correspond to the different thicknesses of the product 4 - the length of its transverse direction.
• the rollers 5 are fastened in opposite directions to one another on the rotary levers articulated on the green plate 9.
• the shaping surfaces 6 of the rollers 5 are designed with the profiles which also correspond to the different thicknesses of the product 4 - according to the length of the longitudinal direction.
• At least one elastic support 8 is supplied, and at least one of the rollers 5 has the outlet 10.
• the bottom of this outlet 10 lies transversely with respect to the lower edge of the shaping surface 6 of the roller 5.
• the elastic support 8 is arranged at the outlet 10, thereby it is attached from one side to the rotary lever ⁇ and from the other side it protrudes further from the outlet 10 of the roller surface 5.
• the outlet 10 can be carried out on the rollers 5 apart from the profiling surfaces 6 and with the selection of outer surfaces 6 of the rollers 5 in order not to act on the rollers 5 with the outlet 10 due to the pressure force.
• the elastic support 8 is suitable for holding the blank plate 1 between the shaping surfaces 6 with the gap therebetween before the movement of rotary levers 7 in the compression of the plate 1.
• the profile of the forming surfaces 6 is designed in such a way that the blank plate 1 can be deformed continuously from the zones of its larger deformation to the zones of its smaller deformation, according to the length of its longitudinal direction.
• the blank plate 1 By supplying the elastic support 8, the blank plate 1 can be supported by maintaining the gap between the blank plate 1 and the shaping surfaces 6 and the finished product 4 can be pulled out after the compression.
• 7 shows the following schematically: joint supports 11, wedge 12, slide supports 13, screw 14 for towing wedge 12, plunger 15 of the press, power lever 16, joints 17 of plunger 15, joints 18 of rotary lever 7
• the plunger 15 of the press shows on the right the wedge mechanism for regulating the position of the right power lever 16, which consists of an additional slide support 19, an additional wedge 20, an additional screw 21 for towing the additional wedge 20.
• the device 'Fig. 7 supplied with the Kell mechanism and the Kraftheoeln 16, the stick ends articulated from one side with the rotary levers 7 and from the other side articulated with the plunger 15 ⁇ er press by at least one arranged on the plunger 15 of the press, and thereby the position of the Stick end of the power lever 16 articulated to the plunger 15 can be changed in the direction along the longitudinal axis of the rotary lever 7.
• the design of the wedge mechanism makes it possible to compress the non-shaping cylinder surfaces of the rollers 5 and to provide their preliminary tightening before the press of the plunger 15 moves and before the blank plate 1 is deformed.
• this cell mechanism can also be arranged on the left with respect to the rollers 5 and linked with another power lever 16 or another rotary lever 7.
• the device (Fig. 7-10) works as follows:
• the rotary levers 7 sink below the horizontal surface; the shaping surfaces 6 leave the surfaces of the raw material 1 corresponding to the maximum thickness t xmax m of the longitudinal direction and the minimum thickness t ymm m of the transverse direction of the product 4 (FIG. 1).
• the elastic support 8 supports the product 4 after the compression until the product 4 is pulled out of the rollers 5.
• a hydraulic press with the force up to 1600 BBB is used.
• the compressive force P AAA mm (the preliminary tightening of the non-shaping cylinder surfaces of the rollers 5) is set at 780 BBB.
• the maximum force of the plunger 15 of the press - 430 BBB and the compressive force of the rollers 5 - are approximately 3700 BBB.
• the width of the tip edge of the knife edge to be produced does not become wider than 0.45 mm.
• the shape of the knife edge fully meets the demands made of it.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Forging (AREA)
• Powder Metallurgy (AREA)
• Metal Rolling (AREA)
• Shaping Metal By Deep-Drawing, Or The Like (AREA)
• Bending Of Plates, Rods, And Pipes (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=20230577

Family Applications (1)

Country Status (6)

Families Citing this family (4)

Family Cites Families (12)

• 2000
  • 2000-02-15 RU RU2000103520/02A patent/RU2195382C2/ru not_active IP Right Cessation
• 2001
  • 2001-02-15 EP EP01913704A patent/EP1320422B1/fr not_active Expired - Lifetime
  • 2001-02-15 AT AT01913704T patent/ATE316828T1/de not_active IP Right Cessation
  • 2001-02-15 AU AU39192/01A patent/AU3919201A/en not_active Abandoned
  • 2001-02-15 DE DE50108850T patent/DE50108850D1/de not_active Expired - Lifetime
  • 2001-02-15 DE DE10190478T patent/DE10190478D2/de not_active Expired - Fee Related
  • 2001-02-15 WO PCT/DE2001/000661 patent/WO2001060537A2/fr not_active Ceased

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events