Forming apparatus

FIELD: plastic working of metals, possibly manufacture of parts with variable wall thickness from sheet blanks.

SUBSTANCE: forming apparatus includes die and sectional punch and in addition it includes support arranged over die. Between die and said support gasket is placed with possibility of changing it. Central punch has axial recess for placing buffer gasket having plug or draw plate overlapping it in order to provide desired resistance of buffer gasket to metal flowing process.

EFFECT: possibility for forming large size parts at high accuracy.

1 dwg

 

The invention relates to the field of metal forming and can be used in all branches of engineering for details of sheet materials with variable wall thickness.

A device for forming thin-walled ends of the large diameter housings pressure, which contains a matrix with insert, workpiece holder and telescopic punches and the lower matrix. The known device is intended for the manufacture of parts with the same thickness on all items (UK Application No. 1438207, IPC B 21 D 22/12, publ. 03.06.76. “Device for forming thin-walled ends of the large diameter housings pressure”).

Closest to the proposed device is a device for sectional stamping, which includes sectional punch and die. In the known device the workpiece are formed sequentially on a separate ring sections (E.I. Semenov “Forging and die forging” Moscow, “Higher school”, 1972, str). The disadvantages of this device include low precision stamped parts. After sectional stamping is required machining of the manufactured parts.

The problem solved by the invention is the development of a device on which you can stamp the large parts with high t is the durability on relatively low-power and small-size universal presses, with a wide spread in the industry. Efforts to develop data presses are acceptable for long-term operation of die tooling.

The technical result obtained using the present invention consists in obtaining the opportunity to make large products with an accuracy of not less than 9 degree at ST SEV 144-75.

The solution of this problem is that in the proposed device, as is known, containing a matrix and a sectional punch, will be additionally enter the bearing and place it above the matrix, between the matrix and the support offered to install the gasket, which on subsequent transitions should be replaced by another gasket thickness. On the axis of the Central punch made the recess in which is placed a buffer strip with its overlying cover. On the cover is applied after the first transition, made the Central through hole.

The drawing shows a device for forming, on the left from the centerline specified stamp, the details of which occupy a position at the end of the first transition, and the right of the axis specified stamp, the details of which occupy a position at the end of the second transition, where 1 is the matrix 2 - strip for the first transition, 3 - bearing, 4 - centering sleeve, 5 - blank 6 - filer, 7 - punch-Bush, 8 - construction of the La of the second transition 9 is a buffer strip, 10 - Central punch, 11 - stamped detail (shell).

In the matrix 1 posted by billet 11. In the Central punch axis is made a recess in which is placed a buffer strip 9 with its overlying cover 5. Between the support 3 and the matrix 1 set gasket 2, which on subsequent transitions is replaced by more subtle.

The stamping process proceeds as follows. The matrix 1 is set to the workpiece 11. On the first transition, the workpiece is deformed by the Central punch 10, which is aligned with the sleeve 4. The buffer gasket 9 made of aluminum AD1 or the like and installed in the Central recess of the plug, cover plug 5, which prevents the buffer strip 9, the transmitting force of the stamping from the support 3, the punch 10. The thickness of the strip 2 provides a stroke the other one for the first transition.

For the second transition instead of the strip 2 install the gasket 8.

The method is carried out in three transition as follows. Using the sheet, perform the first transition, for which set buffer gasket 9 made of aluminum AD1, A5, etc. and interacting with the Central punch 10, install the plug 5, which prevents the aluminum buffer strip. Set Pro is the Lada 2, thickness which provides a stroke of a punch for the first transition. Sleeve 4 centers the punch 10. During the first transition is the introduction of the punch 10 in the stamped part (shell) 11. On the first transition of the buffer strip 9 serves to transmit the forging force from the support 3, the punch 10. The drawing to the left of the centerline specified stamp, the details of which occupy a position at the end of the first transition.

For the second transition instead of the gasket 2 gasket set 8 smaller thickness that provides the desired stroke of the punch-sleeve 7. Instead of the stub 5 set the die plate 6. The centering sleeve 4 is removed and instead install the plug-in sleeve 7. If the second transition stamped in detail introduced the punch sleeve 7, the contact force of the punch 10 to build the shell 11 to provide two conditions:

1) the plug must remain stationary relative stamped envelope (not implemented it);

2) the plug must be pressed to build a shell with such force that the membrane material would not flow under the plug.

The contact force of the punch 10 to build the shell 11, corresponding to the above conditions, is provided by the resistance value of the buffer strip 9 at the end through the die plate 6.

The third transition operations stampout which is similar to the second, namely, instead of the plug 10 with the punch-sleeve 7 install the plug, the outer diameter of which is equal to the outer diameter of punch-sleeve 7. To fulfill the third transition installing a second plug-plug, clean the gasket 8 and installing a new buffer strip. For the third transition, the punch also remains stationary relative to the stamped shell.

The final design of the shell is due to the move under the force of the press of the second plug connector relative to the stamped shell.

Device for punching containing a matrix and a sectional punch, characterized in that the device further comprises a support located above the matrix, while between the matrix and the bearing set gasket with the possibility of its replacement, and the Central punch axis is made a recess in which is installed a buffer strip with its overlying cover or Villeroy providing the required resistance to the process of flowing through it, the buffer strip.



 

Same patents:

FIELD: plastic working of metals, possibly manufacture of annular blanks of parts such as races of bearings.

SUBSTANCE: method comprises steps of punching central portion of blank for making preliminary opening less than opening of ready part; placing blank between die and punch and drawing it at stretching said opening; selecting size of flat blank according to calculated condition for making two blanks; before drawing forming in flat blank preset shaped profile of parts and performing drawing in the form of U-shaped circular profile; dividing parts by removing excess material.

EFFECT: increased factor of using material, lowered labor consumption, improved accuracy of formed parts.

3 dwg, 1 ex

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FIELD: plastic working of metals, possibly manufacture of annular blanks of parts such as races of bearings.

SUBSTANCE: method comprises steps of punching central portion of blank for making preliminary opening less than opening of ready part; placing blank between die and punch and drawing it at stretching said opening; selecting size of flat blank according to calculated condition for making two blanks; before drawing forming in flat blank preset shaped profile of parts and performing drawing in the form of U-shaped circular profile; dividing parts by removing excess material.

EFFECT: increased factor of using material, lowered labor consumption, improved accuracy of formed parts.

3 dwg, 1 ex

Forming apparatus // 2255826

FIELD: plastic working of metals, possibly manufacture of parts with variable wall thickness from sheet blanks.

SUBSTANCE: forming apparatus includes die and sectional punch and in addition it includes support arranged over die. Between die and said support gasket is placed with possibility of changing it. Central punch has axial recess for placing buffer gasket having plug or draw plate overlapping it in order to provide desired resistance of buffer gasket to metal flowing process.

EFFECT: possibility for forming large size parts at high accuracy.

1 dwg

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EFFECT: enhanced operational reliability of aggregate.

5 cl, 6 dwg

FIELD: plastic metal working, possibly die tools for forming protrusions in tubular parts in presses provided with systems for automatic feed and discharging parts and for controlling forming process.

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EFFECT: enhanced accuracy and operational reliability of die set.

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8 dwg, 1 ex

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EFFECT: enlarged manufacturing possibilities, increased factor of metal usage, lowered labor consumption for making locking devices of improved quality.

2 cl, 3 dwg, 1 ex

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EFFECT: simplified process, improved quality of constructions.

11 cl, 4 dwg

Shaping apparatus // 2275267

FIELD: plastic working of metals, possibly shaping articles of sheet materials.

SUBSTANCE: apparatus includes punch, die and shaping chamber with walls in the form of movable sections. Bands for sensing lateral efforts are joined with said walls through intermediate members. Leverage mechanisms with periodic-action drive units are arranged between movable sections of walls and bands. Punch and die are in the form of bases and groups of shaping members. Each shaping member is provided with individual periodic-action drive unit with normalized movement. Shaping members have surface extending from end to side of outlet link of individual drive unit and touching lateral surfaces of adjacent shaping members. Individual drive units provide periodical setting of contour of die and punch. Peripheral shaping members are adjacent to shaping chamber walls. At shaping strokes periodic-action drive units of leverage mechanisms provide squeezing of groups of shaping members of die and punch by means of movable sections of walls.

EFFECT: enlarged manufacturing possibilities of apparatus.

3 cl, 5 dwg

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EFFECT: enlarged manufacturing possibilities, improved quality of parts.

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

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