Die set for squeezing tubular blank

FIELD: plastic metal working, possibly manufacture of parts from tubular blanks.

SUBSTANCE: die set includes die, punch, holder, upper and lower yokes. Upper yoke has working surface whose inner diameter is equal to outer diameter of tubular blank. Die set also includes insert of plastic metal with diameter equal to inner diameter of tubular blank. Lower yoke has non-working cavity whose diameter is equal to diameter of insert of plastic metal and whose height is equal to length of tubular blank. Draw plate with calibrated hole is arranged between upper and lower yokes. Insert of plastic metal and draw plate are made with possibility of their common turning.

EFFECT: enhanced efficiency of die set due to possibility of multiple use of insert.

2 cl, 2 dwg

 

The invention relates to the processing of metals by pressure and can be used for the manufacture of parts from tubular blanks.

Famous stamp for the manufacture of parts from tubular blanks (inventor's certificate SU # 797820, MKI B 21 D 22/02, 1981), containing the liner, the matrix, the punch and the guide sleeve. The disadvantage of this stamp is the structural complexity of a compound punch and complexity of removal objetos procurement of the cavity of the matrix.

Closest to the proposed stamp to the technical essence and purpose is the stamp for drawing (inventor's certificate SU # 863075, MKI B 21 D 22/02, 1980). The stamp contains the punch, the matrix with the working cavity filled with plastic, metal clamp and bushing from outside the cavity and the orifice is placed in the working cavity of the matrix. This calibrated orifice sleeve communicates with the cavity of the matrix. The disadvantage of this stamp is that after the formation of the products on this stamp is necessary to perform an operation for separation and removal of the sleeve of ductile metal, which requires a readjustment of the stamp during the working process.

The objective of the invention is to increase the productivity of the stamp without compromising the quality of the finished products due to the possibility of multiple use of the liner of the square is a partial metal without additional operations Department and removing it from the cavity of the die and the changeover within the workflow.

To address this problem, the stamp containing matrix, the punch and clamp, unlike the prototype, equipped with upper and lower clips. The top clip is made with the working cavity, the inner diameter of which is equal to the outside diameter of the tubular billet D, in which is placed an insert of ductile metal with a diameter equal to the inner diameter d of the workpiece. The lower ferrule is made from outside the cavity, the diameter of which is equal to the diameter d of the insert of ductile metal, and the linear dimension height equal to the length L of the tubular workpiece. Due to the effect of force on the liner from a ductile metal (e.g., lead) is the radial pressure, which prevents the formation of circular waves (flute) on the tubular workpiece and the thickening of the walls in the area of formation, and in the area of backwater. Between the upper and lower clamps is filler with a calibrated orifice. The liner is made of ductile metal and filler made with the possibility of sharing their coup 180° in the axial direction. After the coup liner together with villeroi the process continues without additional preparatory work. In addition, the design shifts nozzles with excellent parameters calibrated holes. Due to this, you can adjust the amount of back pressure is inside the tubular billet.

The invention is illustrated graphic materials, in which figure 1 presents a stamp for manufacturing parts from tubular blanks before you begin; figure 2 - the same after crimping.

The proposed stamp contains a matrix 1, punch 2, the top ring 3, an inner diameter equal to the outside diameter D of the tubular workpiece 4. In the workpiece 4 has a liner 5 of ductile metal (e.g., lead) with a diameter d equal to the inner diameter of workpiece. The stamp also includes a lower yoke 6, the die plate 7 and the clamp 8. The outside diameter of the cavity of the lower casing 6 is equal to the diameter d of the insert of ductile metal, and the linear dimension height equal to the length of a tubular preform L.

Stamp works as follows. In the lower yoke 6 insert the plastic liner from the metal 5 Villeroy 7, set the workpiece 4 and the upper yoke 3, and then the punch 2 and the matrix 1. When working stroke of the matrix 1 and the punch 2, the liner is made of ductile metal 5 through a calibrated orifice in filiere 7 is extruded into the cavity of the lower casing 6, while the upper part of the tubular workpiece 4 is moved into the working cavity formed between the matrix 1 and the plug 2, thereby crimping the tubular workpiece. After crimping of the tubular workpiece clamp 8 returns the upper yoke 3 to the initial position After the receipt and removal of the finished part to repeat the process of crimping the tubular blanks liner 5 of ductile metal with Villeroy 7 is removed from the bottom of the cage, rotates 180° and again installed in the stamp, create new tubular workpiece, and the crimping process is repeated. If you want to change the value of the back pressure affecting the quality of morphogenesis obitaemoj tubular workpiece, it is sufficient to replace the die plate with a different parameter calibrated holes.

The use of the invention makes it extra changeover stamp to molding of parts. The ability to use interchangeable nozzles with different calibrated holes allows you to change the amount of back pressure in the die and get the items with the specified distributed wall thickness obtained from tubular blanks with different geometrical and mechanical parameters.

1. Stamp for crimping tubular blanks containing matrix, the punch and clamp, characterized in that it has upper and lower clamps, the upper ferrule is made with the working surface, the internal diameter of which is equal to the outside diameter of the tubular workpiece and the insert of ductile metal with a diameter equal to the inner diameter of a tubular workpiece, the lower ferrule is made from outside the cavity, the diameter of which is equal to the diameter of the liner is made of ductile metal, and a linear dimension equal to the length of the tubular workpiece, Villeroy with to liberandum hole, located between the upper and lower clips, with plastic liner from metal together with Villeroy made with the possibility of a coup.

2. The stamp according to claim 1, characterized in that filler made interchangeable with different diameters calibrated holes.



 

Same patents:

FIELD: plastic metal working, possibly in crimping machines.

SUBSTANCE: crimping die set and coupling are used for holding worked part in crimping machine. Coupling is placed onto worked part with possibility of unclamping and it has fist clamping portion and second clamping portion mutually joined through hinge. Crimping die set may be inserted to crimping machine. Said die set has groove for worked part and recess for coupling on its working surface. Recess for coupling has configuration necessary for holding coupling in it. In order to crimp part in crimping machine, coupling is arranged around part in predetermined position and then it is tightened around part. Coupling and article are inserted into recess for coupling and groove for article respectively in crimping die set. Then die set with coupling and article is placed into crimping machine.

EFFECT: enhanced efficiency and reliability of crimping process.

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FIELD: plastic metal working, possibly in crimping machines.

SUBSTANCE: crimping die set and coupling are used for holding worked part in crimping machine. Coupling is placed onto worked part with possibility of unclamping and it has fist clamping portion and second clamping portion mutually joined through hinge. Crimping die set may be inserted to crimping machine. Said die set has groove for worked part and recess for coupling on its working surface. Recess for coupling has configuration necessary for holding coupling in it. In order to crimp part in crimping machine, coupling is arranged around part in predetermined position and then it is tightened around part. Coupling and article are inserted into recess for coupling and groove for article respectively in crimping die set. Then die set with coupling and article is placed into crimping machine.

EFFECT: enhanced efficiency and reliability of crimping process.

13 cl, 6 dwg

FIELD: plastic metal working, possibly manufacture of parts from tubular blanks.

SUBSTANCE: die set includes die, punch, holder, upper and lower yokes. Upper yoke has working surface whose inner diameter is equal to outer diameter of tubular blank. Die set also includes insert of plastic metal with diameter equal to inner diameter of tubular blank. Lower yoke has non-working cavity whose diameter is equal to diameter of insert of plastic metal and whose height is equal to length of tubular blank. Draw plate with calibrated hole is arranged between upper and lower yokes. Insert of plastic metal and draw plate are made with possibility of their common turning.

EFFECT: enhanced efficiency of die set due to possibility of multiple use of insert.

2 cl, 2 dwg

FIELD: plastic working of metals, namely forming portion of lowered diameter in open end of container.

SUBSTANCE: apparatus includes housing, lower die and radially unclamped guiding organ in the form of shaping members being outer and inner shaping segments. When guiding organ is in clamped state its inner segments are arranged inside outer ones. In second variant of invention each shaping segment has carrying surface for container; said carrying surface has upper cylindrical portion and inlet annular portion. In order to reduce diameter of open end of container, guiding organ is unclamped, open part of container is inserted to lower die, then guiding organ is clamped and container is removed out of lower die. Invention provides possibility for decreasing metal thickness of open end of container and also diameter of said portion.

EFFECT: enhanced efficiency of method, improved design of apparatus.

34 cl, 22 dwg, 1 tbl

FIELD: technological processes.

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EFFECT: capabilities are expanded.

2 cl, 4 dwg

FIELD: technological processes.

SUBSTANCE: device for squeezing of tubular billet ends in necks of pressure vessel is related to the field of machine-building. Squeezing device with heating of tubular billet ends in necks of pressure vessel contains source of axial force, heater and matrix equipped with mandrel. Matrix is fixed in bath of boiling substance with boiling temperature that corresponds to superplasticity of tubular billet material. Bath is equipped with ultrasonic generator. Matrix heat exchanger in close proximity to the mirror surface of boiling substance vertically bases tubular billet, which interacts with source of axial force.

EFFECT: provision of increase of quality of material structure that is squeezed into pressure vessel necks.

1 dwg, 1 ex

FIELD: technological processes.

SUBSTANCE: device for squeezing of tubular billet ends in necks of pressure vessel is related to the field of machine-building. Device of squeezing and expanding of tubular billet ends with heating in necks of pressure vessel contains source of axial force, heater and matrix equipped with mandrel. Matrix is fixed in bath of melt of melting substance with melt temperature that corresponds to superplasticity of tubular billet material. Bath is equipped with ultrasonic generator. Matrix heat exchanger in close proximity to the mirror surface of melt of melting substance vertically bases tubular billet, which interacts with reversible source of axial force and ultrasound.

EFFECT: provision of increase of quality of material structure that is squeezed into pressure vessel necks.

1 dwg, 1 ex

FIELD: technological processes.

SUBSTANCE: method for pipe workpiece swaging into pressure vessel gorge involves heated swaging of steel pipe workpiece in matrix. Matrix with workpiece is placed in boiling substance, and the workpiece is heated to superplasticity point of its material. Combined effect of ultrasound and own axial weight force of the workpiece.

EFFECT: improved quality of material structure.

1 ex

FIELD: machine building.

SUBSTANCE: method for forming the pipe ends in the pressure vessel necks includes heating the pipe end and its breaking-down in a die, moving the pipe through the heat exchanger arranged above the melt surface and into the melt of a substance with melting point corresponding to the pipe material superplastic state. The pipe end breaking-down is carried out by combining the pipe dead weight effect and ultrasound in the aforesaid die placed on melt bath bottom.

EFFECT: higher quality of structure of pipe material broken-down in pressure vessel neck.

1 ex

FIELD: metallurgy.

SUBSTANCE: invention relates to metal deformation process, particularly to facilities for tubular billets ends flanging and can be used in different branches of mechanical engineering. Lathe contains mounted on common stand hollow spindle with blank clamping mechanism, crossfeed carriage, cutoff knife, crossfeed carriage driver, moulding tool and blank feed, main slide, installed with ability of movement lengthwise the axis of spindle, guide block, rigid on stand, blacket with bearing roller of guide block, fixed on end slide, extension spring, one end of which is fixed in transversal, and the other - in end slide. Additionally crossfeed carriage is implemented with guide ways, parallel to center line of spindle, end slide is installed on guide ways of crossfeed carriage and by means of spring it is pressed through the bearing roller to guide block. Mould tool is installed on end slide, and cutoff knife is located before the mould tool.

EFFECT: there are increased manufacturing capabilities ensured by receiving on blanks of rolled up part of different forms and mouths.

4 dwg

FIELD: mechanics.

SUBSTANCE: group of inventions relates to metal treatment by pressure, particularly to manufacture of double-part bodies of metal container. Module-type matrix includes circular body with inner and outer surrounding walls. The body is provided with die fixing elements, multiple molded cavities in the above mentioned inner surrounding wall. The moulded cavities are distributed along wall circle. Each cavity is provided with internal and external section, tensile damping element located on the said external section of each molded cavity. There is also hard contact element located on the above-mentioned internal section of each moulded cavity. The said contact element has trapezoidal shape, provided with a multiple set of friction surfaces, contacts with the said hard element and extends to the external direction of the above mentioned inner surrounding surface. The tooling batched equipment contains holder and die bearing element for the secondary extraction, at least one modular matrix having circular housing and a multiple set of damping elements for die self-centering with regard to the cyclic die. So the above-mentioned damping element includes hard contact element with a multiple set of surfaces and at least one separating element. The tooling batched equipment is designed to manufacture container body in multiple cycle process. It is comprised of a modular matrix having circular body with inner and outer surrounding walls and die fixing unit. At least one friction plate is located on the said outer surrounding wall of the matrix. A multiple number of molded cavities are available on the same outer surrounding wall and distributed along its circle. Each cavity is provided with internal and external sections, fixing section, elastic damping element located on the said external section of each moulded cavity. The above mentioned elastic element is provided with fixing element contacting with the said fixing section of the cavity. The hard contact element is located on the said internal section of each moulded cavity and provided with multiple friction surfaces. It contacts with the said elastic damping element and extends in the external direction from the said inner surrounding wall.

EFFECT: wide engineering capabilities and improved quality of items.

20 cl, 11 dwg

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