The method of forming the core parts with a massive head with a cavity

 

(57) Abstract:

The inventive preparation is used with a diameter corresponding to the diameter of the end head. Produce simultaneously forming a cavity, the calibration of the end heads and the dosing volume of the combined extrusion. The outer contour of the head execute sequentially in height when set metal and final landing. However given the profile of the cavity is fixed mandrel. 1 C.p. f-crystals, 5 Il.

The invention relates to the processing of metals by pressure and can be used for stamping rod parts with a massive head with a cavity, for example, details of the type of cutter.

A known method of manufacturing a rod parts with a massive head, containing the cavity, including the formation of rod reduction, a preliminary set of metal with a conical head, followed by reverse extrusion cavity and forming the outer contour of the head crimping /1/.

The disadvantages of this method are the increased consumption of metal, low tool life and not enough high quality products, limited possible forms part, due to the peculiarities of the process.

The technical result is achieved in that the workpiece is used with a diameter corresponding to the diameter of the butt heads with subsequent processing of the chamfers and the calibration of the diameter, and then produce the formation of a cavity, the calibration of the end heads and the dosing volume of the combined extrusion, the outer contour of the head execute sequentially in height when set metal and final landing, given the profile of the cavity is fixed mandrel.

If necessary, obtain details with annular bulges on the rod specified area profiles by combining roll with cross-wedge cold rolling.

In Fig. 1-5 presents the processing sequence according to the invention.

To manufacture the part using cut into the stamp from the rolled cylindrical workpiece, the diameter of which corresponds to the diameter of the end heads, i.e., dzagd4/Fig.1,5/.

In the first position of Fig.2 carry out the calibration of the billet in diameter with the formation of the chamfers, as well as pre-calibrated butt heads, which prevents the formation of burrs at the Ute cavity, calibrated butt heads and metered volume for subsequent stamping. The value of the effort, perceived by the punch and matrix for 15 -20% decrease due to the fact that the extrusion cavity is carried out at a slight preliminary deformation hardening of the original piece in the calibration at the first position. Values efforts further reduce the combined extrusion processes, with the possibility of metal flow in two directions. Dosing volume billet reduce effort during subsequent stamping operations and improve the quality of the product. Reduction of the forging force increase tool life.

The third position /Fig.4/ shall be planting a set of metal for subsequent final forming of the head and reducing the rod. The contour of the cavity of the punch preliminary landing adjacent to the end corresponds to the contour of the finished part. The size of the cavity products, extruded in the second position, the lock mandrel. Set of metal into the cavity of the punch prior to planting exclude the possibility of limiting bending at the final landing massive head.

On the fourth position /Fig.5/ conduct final landing heads and what ertai position reduce the clamping and improve the quality of the part. The cavity is fixed mandrel. In the case of technological necessary, conduct the second reduction rod.

Sequential design of the outer contour of the head in the third and fourth positions reduce the clamping, increase tool life and improve the quality of the items.

The operation of crimping and punching in the outdoor stamp with the formation of scrap used to produce complex shaped structural parts, exclude, as their use limits the complexity of the details associated with technological waste and increase the number of operations.

If necessary, use the rod clamps and other annular projections the process is executed on the secondary device in the power of the machine, harvester, for rolling flat dies terminal profiles by combining roll with cross-wedge of cold rolling. If the item is stamp on the press, profiling carried out on a rolling machine. The invention provides waste reduction process, minimizing specific efforts on the instrument and increase its durability, high quality products, expanding the technological capabilities of the cold surround piece is the use of steels and alloys with increased strength.

1. The method of forming the core parts with a massive head with a cavity that includes the segment of the workpiece from rolled in the stamp, the combination of a rod and drawing the outer contour of the head by a set of metal in the conical cavity of the punch prior to planting and final forming of the head, characterized in that the workpiece using a diameter corresponding to the diameter of the end face of the head, with subsequent processing of the chamfers and the calibration of the diameter, and then simultaneously produce the formation of a cavity, the calibration of the end heads and the dosing volume through a combination of extrusion, and the design of the outer contour of the head is carried out sequentially on its height when set metal and the final shaping of the landing, however given the profile of the cavity is fixed mandrel.

2. The method according to p. 1, characterized in that it additionally produce profiled rod combination roll with cross-wedge of cold rolling.

 

Same patents:

The invention relates to a punching tool with detachable matrices and can be used for stamping the core products of the type of nails

The invention relates to the processing of metals by pressure and can be used in the manufacture of cold-formed tool, in particular for precipitation of a large amount of heads parts rod type

The invention relates to the field of metal forming, in particular for landing in split matrices, and is used primarily in medical technology, namely in the operations of osteosynthesis in the treatment of fractures of tubular bones

The invention relates to the field of metal forming and, in particular, to a device for cold plastic deformation and details with regulated phenomenological combination of performance and can be used in the manufacture of:

a new generation of sensors for measuring physical parameters in chemically active environments, ultra-small and ultra-high pressures, while vibrodiagnostic with changing amplitude, high and cryogenic temperatures;

a new generation of the defining parts of video and audio equipment (switches-magnetically operated contacts) that allows you to create on the basis of one element mutually exclusive physical features: high elasticity and corrosion resistance high magnetic induction Bsstable maximum magnetic permeabilitymax;

a new generation of environmentally friendly magnetic modules in food containers for catalyzing the formation of amino acids during fermentation of protein masses;

a new generation of long-term self-healing blood analyzers to AIDS, allowing fast enough to visually appreciate the fact neobhodimosti constant stirring with the aim of preserving one part

The invention relates to the processing of metals by pressure and can be used for punching round steel rod with flange, for example, axes hire

The invention relates to mechanical engineering technology, namely the restoration of worn in diameter parts, such as cylindrical pins for pattern plates, and can be used in shipbuilding, construction, automotive and other sectors of the economy in order to restore the various parts manual

The invention relates to the processing of metals by pressure, and in particular to methods of manufacturing punching rod products slub and devices for implementing these methods

The invention relates to the processing of metals by pressure, and in particular to methods of manufacturing punching rod products slub and devices for implementations of these methods, and can be used in the manufacture of blanks core products with a flange on the end and a clamp at the middle part on the universal forging or die-stamping equipment in forging shops of machine-building enterprises in the conditions of small-scale or mass production

FIELD: metal working.

SUBSTANCE: hard alloy matrix has casing, bushing pressed in the case and hard alloy insertion. Bushing has multifaced hole. Hard alloy insertion is composed by several sections made in form of trapezoidal-section prisms which have cut angles at their non-working edges. Number of sections corresponds to number of faces of item to be headed. Cuts of angles are made symmetrically to faces of working edge. Slits are made in several places of multifaced hole bushing at the ponts where faces cross each other.

EFFECT: improved resistance of matrix; simplified assembly.

3 cl, 1 dwg

FIELD: plastic metal working, possibly manufacture of rod parts with heads.

SUBSTANCE: method comprises steps of placing portion of heated measure blank in movable die spring-loaded in axial direction and forming thickened portion. Die is mounted with possibility of motion in direction coinciding with that of punch motion. Additional step is realized for forming rod due to placing portion of blank in one-piece die with technological gap. Before forming thickened portion and rod, free heading of the whole blank is performed. Then die is moved and simultaneously first stage of heading thickened portion and step of rod forming by closed heading are realized. Closed heading is performed due to moving portion of blank in direction inverse relative to motion direction of punch and die. Then thickened portion is headed in fixed position of die.

EFFECT: possibility for making rod parts with thickened portion by means of simple technological tooling in high-speed automatic presses.

3 cl, 6 dwg, 2 ex

FIELD: plastic working of metals, possibly manufacture of Г-shaped parts from sheet blanks.

SUBSTANCE: method comprises steps of placing two sheet blanks in die and deforming them by means of vertically descending punch for forming two Г-shaped parts with flange arranged normally relative to rear flat face of parts. Blanks are subjected to upsetting while they rest one upon other by their flat faces.

EFFECT: enhanced efficiency of process, simplified design of fitting.

1 dwg

FIELD: construction equipment.

SUBSTANCE: rod ends are made with thickenings which have screw. For rods joining joiner is used with inner screw. Thickenings on rod ends are received on forging press fitted with equipment for cold heading of reinforcing rod ends. As stated device for disembarkation forging die is used, having longitudinal channel along the length for operation security with long reinforced rods.

EFFECT: provision of process capability widening of used equipment with serviceability and economic feasibility preservation.

20 cl, 12 dwg

FIELD: technological processes.

SUBSTANCE: for parts production cold-upsetting tool is used in the form of multi-position unit. Unit includes five positions and contains puncheons, thrusters, assembled matrixes and strippers. Assembled matrix in the fourth position is installed motionlessly and is equipped with reduction step at the insert. Stripper of the fourth position is arranged with the opening, in which spring-loaded puncheon is installed. Cut billet is subjected to setting and calibration with leveling of butt ends and formation of conical marks. By means of further billet setting head is created. Then opening is pressed out in the billet and its external diameter is reduced with formation of step. Reduction of diameter is carried out in motionless matrix with insert, which has reduction step. For that purpose billet is displaced until it thrusts stripper with spring-loaded puncheon with its butt-end. Puncheon is installed in billet pressed out opening. Later billet is displaced together with puncheon and stripper via reduction step of matrix. After that billet opening is interweaved.

EFFECT: expansion of technological resources.

2 cl, 4 dwg

FIELD: technological processes.

SUBSTANCE: end section of billet is heated and deformed in die block. At that at first metal is accumulated for molding of rod head. Accumulation is done in at least three stages in puncheon cavity. Volume of this cavity is selected provided that its value is reduced from the first stage of deformation to the last one in interval that makes 1.2÷1.1 from volume of finished rod head. Then nipple part of head is molded in puncheon cavity with provision of its profile and geometric dimensions. Remaining part of rod head external surface is molded in matrix cavity.

EFFECT: higher quality of produced items with simultaneous simplification of production and reduction of expenses.

2 dwg

FIELD: technological processes.

SUBSTANCE: device comprises fixed plate for installation on press table, cylinder with semi-matrices and upper movable plate with shape puncheons. Upper plate is connected to press slider by means of tailpiece. Gasket with inclined surface and guides is rigidly fixed to stationary plate. Cylinder equipped with mechanism of its sliding moves in guides. Device is provided with hold-down connected to upper movable plate and polyurethane component. Semi-matrices have cavity, where pusher is installed. Working opening of semi-matrices is provided along extruded bar within the limits of the upper allowance for its manufacture. Upper hold-down and semi-matrices have cone to arrange stock hold-down together polyurethane component, whenever upper plate moves down.

EFFECT: higher efficiency.

4 dwg

FIELD: technological processes, metal working.

SUBSTANCE: invention is related to metal plastic working and may be used to manufacture products from lengthy billets with relative length of extruded part that exceeds the length permissible under condition of longitudinal stability. Area of extruded part of billet adjacent to clamping part of split matrix is heated up to maximum forging temperature. This area has relative length, which does not exceed length permissible as per condition of longitudinal stability. Moreover, heating is provided for end section of extruded part by means of heat transfer until minimum forging temperature is obtained on its end surface. Billet is installed in clamping part of split matrix with installation of deforming puncheon and end section of billet extruded part in movable guide bush. Bush is aligned with split matrix. Then edging is carried out by free upset, and product is shaped in single stage.

EFFECT: improved quality of manufactured products and efficiency of their manufacturing process.

4 dwg, 1 ex

FIELD: metallurgy.

SUBSTANCE: invention refers to metal processing by pressure and can be applied in production of multifacet items, such as nuts. Die includes cartridge, intermediate bushing, bushing with multifacet hole, and soli alloy insert. Insert includes separate sections in the numbers equal to number of upset item facets. Sections are made in the form of prisms with trapezoid cross-section with beveled corners at non-operational ends. Insert section corner bevels are symmetrical to operational end facets. Bushing with multifacet hole features cuts at facet junctions. Intermediate bushing is housed tightly in the case and clamps cut bushing with multifacet hole. Insert section thickness b is selected out of 1/3S ≤ b ≤ 2/3 S range, where S is turnkey size of the upset item.

EFFECT: enhanced bushing durability, solid alloy saving.

1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and can be used for producing oilwell tubing. Pipe-end upsetting is carried out by forming outer surface of upset part and zone arranged behind upset part, as well as inner surface of upset pipe-end. Forming of upset part outer surface and zone arranged there behind, is performed using upsetting die. Said die has cylindrical and taper sections to form upset part and taper section to form zone behind upset part. Upset pipe-end inner surface is formed by upsetting punch with section for aforesaid forming. OD of said section exceeds by 0.6-1.5 mm the rated ID of oilwell tubing smooth part. Note here that upsetting die and punch are used with due allowance for thermal expansion factor of upset metal making 1.0065 -1.0085.

EFFECT: upset pip-ends that do not require additional machining.

2 dwg

Up!