RU2016687C1 - Progressive die - Google Patents

Progressive die Download PDF

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Publication number
RU2016687C1
RU2016687C1 RU92014839A RU92014839A RU2016687C1 RU 2016687 C1 RU2016687 C1 RU 2016687C1 RU 92014839 A RU92014839 A RU 92014839A RU 92014839 A RU92014839 A RU 92014839A RU 2016687 C1 RU2016687 C1 RU 2016687C1
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RU
Russia
Prior art keywords
stamp
transitions
punches
plate
pressure
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Application number
RU92014839A
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Russian (ru)
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RU92014839A (en
Inventor
Виктор Григорьевич Ковалев
Вадим Викторович Ковалев
Original Assignee
Виктор Григорьевич Ковалев
Вадим Викторович Ковалев
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Application filed by Виктор Григорьевич Ковалев, Вадим Викторович Ковалев filed Critical Виктор Григорьевич Ковалев
Priority to RU92014839A priority Critical patent/RU2016687C1/en
Application granted granted Critical
Publication of RU2016687C1 publication Critical patent/RU2016687C1/en
Publication of RU92014839A publication Critical patent/RU92014839A/en

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Abstract

FIELD: sheet material forming. SUBSTANCE: die has plates with guide columns and bushings, separating and shaping punches and equalizer of off-center loads. Separating punches are mounted in movable punch holders, which are associated with lower plate by means of independent columns and bushings and with upper plate by means of self-centering end journal and thrust bearing. Load equalizer comprises spring sock absorbers. In the course of die operation, off-center loads are compensated by equalizer. Resilient association of punch holders with upper plate and independent columns and bushings exclude skewing of separating tools. EFFECT: enhanced stability of die and improved reliability of its operation. 7 cl, 2 dwg

Description

 The invention relates to the processing of metals by pressure, in particular to stamps of sequential action for processing sheet material.
 Known stamp sequential action for processing sheet material containing a position with punches for punching and a position with a punch for cutting. Punching punches are installed in a punch holder movable relative to the upper plate and connected to the lower plate by guide columns, autonomous from the guide columns of the stamp as a whole [1].
 The disadvantage of this stamp is that in the initial stage of entering strips or tapes into the stamp, only punches for punching work, since all holes are punched first. At this moment, eccentric loads occur in the stamp due to the presence of efforts at the punching position and the lack of efforts at the punching position. The specified disadvantage leads to distortions of the upper plate relative to the lower and reduce the resistance of the stamp.
 A known stamp for processing sheet material equipped with a subsequent system that eliminates distortions by moving the tool holders to the optimal position when an eccentric load occurs [2].
 The disadvantage of this stamp is its increased complexity due to the presence of a tracking system, cumbersome and limited use. In addition, the movement of the tool holders and the selection of the optimal position is carried out under load when the tools have already entered into operation, which cannot fully satisfy the negative impact of off-center loads.
 A well-known sequential-action stamp for processing sheet material containing compensators of eccentric loads in the form of spring-loaded rods located at the corners of the upper plate and mounted on the lower plate of the creepers interacting with the rods at the right time [3].
 The disadvantage of this stamp is that all the tools of the upper plate are rigidly mounted on it. Therefore, if it is necessary to perform stamping and dividing operations when the tools come into operation at different points in time, the optimum operating mode of the dividing tools is not ensured, and this leads to a low resistance of the dies.
 Closest to the invention is a sequential-action stamp for making dividing and shaping transitions, comprising a rigid shank, an upper plate with rigidly fixed punch holders carrying punches for shaping transitions, and with punch holders carrying punches for separating transitions, a lower plate with rigidly mounted matrix holders, matrices corresponding to the indicated punches, and guide columns and bushings connecting said plates [4].
 The disadvantage of this stamp is that eccentric loads are constantly present in it. This occurs at the beginning of each strip or tape when not all strip positions are in operation. And also this takes place in the process of work, although all positions are under load, since the forming and dividing punches come into operation at different points in time.
 The technical result, the achievement of which the invention is directed, is to increase the durability of the stamp and the reliability of its operation.
 To do this, in the stamp of sequential action for performing the separation and form-changing transitions, the punches for punches for separating transitions are installed with the possibility of movement relative to the upper plate and interacting with it, the stamp is equipped with additional elements that independently connect the punches for punches for separating transitions with the lower plate, and a balancer of the moments that arise from the efforts in the dividing transitions relative to the center of pressure of the shape-changing transitions. The axis of the rigid shank is aligned with the center of pressure of the punches for the forming transitions at the end of their stroke and before the start of the punches for the separation transitions.
 The stamp is equipped with pairs containing each spherical heel in contact and a self-centering thrust bearing and each located between the corresponding punch holder of the punch for the dividing transition, and the upper plate, and the axis of the pair is aligned with the pressure center of the corresponding punch for the dividing transition.
 The balancer is made in the form of spring shock absorbers, each containing pressure pins contacting each other, one of which is rigidly fixed to one of the plates, a spring located between the other pin and the other plate, and a cup covering this pin and the spring mounted on this plate. Shock absorbers are located at the maximum distance from the center of pressure for the forming transitions within the stamp.
 The balancer is made of two parts located symmetrically relative to the feed axis of the workpiece, and the force perceived by each part is equal to half the total force of the balancer. Each position with a punch for the dividing transition is equipped with a flange centering the spherical heel along the pressure axis of this position and having a shoulder, and a holder covering the self-centering thrust bearing and having a shoulder located with the possibility of interaction during the reverse stroke with the flange shoulder.
 In FIG. 1 shows a stamp, general view; in FIG. 2 is a section AA in FIG. 1.
 The stamp contains a bottom plate 1 with guide columns 2 and an upper plate 3 with guide bushings 4 and a rigid shank 5. On the plate 1, a matrix holder 6 with dies 7-10 is installed, on the plate 3 there is a punch holder 11 for the punch 12 for the dividing transition, the punch holder 13 for punches 14-16 for forming transitions, punch holder 17 for the punch 18 for the separation transition. The punch holder 13 is mounted rigidly on the plate 3, and the punch holders 11 and 17 are movable relative to the plate 3.
 The punch holder 11 is connected to the plate 1 by independent guide bushings 19 and columns 20, and to the plate 3 through the thrust bearing 21 and the heel 22. The thrust bearing 21 is mounted on the plate 3 by a cage 23, and the heel 22 is fixed by a flange 24, which interact with each other with their shoulders. The axis of the heel 22 and the thrust bearing 21 coincides with the pressure axis of the punch 12. The punch holder 17 is connected with the plate 3 in the same way.
 The stamp also contains a balancer of the moments arising from the efforts in the dividing transitions relative to the center of pressure of the forming transitions. This balancer is made in the form of spring shock absorbers, each of which contains pressure pins 25 and 26, pin 25 is mounted on the plate 3 using the holder 27, pin 26 is supported on the plate 1 through the spring 28 and covered by a glass 29. The stamp contains four shock absorbers located pairwise relative to the axis of the feed material.
 In the matrix holder 6 is also installed matrix 30.
 The stamp works as follows. The processed material (not shown) is fed to the stamp. First, the punch 18 enters into operation, and the remaining punches do not interact with the material. However, the occurrence of off-center loads does not occur, since this is excluded due to the presence of a balancer. Further, the material is moved under other tools.
 During the working stroke, the force and its maximum value along the slider of the press usually arise not simultaneously at the formative transitions. Therefore, a rigid shank 5, located at the center of pressure of these transitions for a point in time immediately before the start of the work of separation transition tools, was chosen for the formative transitions. When the dividing transition tools are working, the die center of pressure is shifted to another place, however, these working parts, which have their own direction and are self-aligning thanks to the heels 22 and thrust bearings 21 located in the pressure centers of the dividing tools, maintain the correct mutual direction, although due to the displacement of the center of pressure a stamp is possible in the presence of elastic deformations of the guides of the stamp, press and plates deviation from the correct initial relative position.
 The offset of the center of pressure of the stamp when performing separation transitions prevents the balancer of moments, creating a moment opposite in sign to the moment of the forces of the separation transitions relative to the center of pressure of the forming transitions and the axis of the shank. At the same time, the belt without obstacles moves in the axial direction after each working stroke, since the balancer, which creates the corresponding moment by the force, the resultant of which is on the feed axis of the tape, consists of two parts symmetrical with respect to the feed axis of the tape. Although the balancer prevents the displacement of the center of pressure of the stamp, it does not exclude local elastic deformations of the plates and holders of the working forming tools near the locations of the separation tools and the disruption of the relative position of the punches and the matrix of the separation transitions, therefore, their own guide bushings 19 and the column 20 for separation transition tools the presence of a self-installing power transmitting device allows to exclude a violation of their correct relative position , keep the gap between the punch and the matrix in the dividing transitions uniform.

Claims (7)

 1. A STAMP of SEQUENTIAL ACTION for performing dividing and shaping transitions, comprising a rigid shank, an upper plate with rigidly fixed punch holders carrying punches for shaping transitions, and with puncheous holders carrying punches for dividing transitions, a lower plate with rigidly fixed punched punched matrixes dies, and guide columns and bushings connecting these plates, characterized in that the puncheon holders of punches for section The individual transitions are installed with the possibility of moving relative to the upper plate and interacting with it, the stamp is equipped with additional guide elements that independently connect the puncheon holder of the punches for the separation transitions with the lower plate, and balancers of the moments arising from the efforts in the separation transitions with respect to the pressure center of the forming transitions.
 2. The stamp according to claim 1, characterized in that the axis of the rigid shank is aligned with the center of pressure of the punches for the forming transitions at the end of their working stroke and before the start of the working stroke of the punches for dividing transitions.
 3. A stamp according to claims 1 and 2, characterized in that it is provided with pairs containing each contacting spherical heel and a self-centering thrust bearing and each located between the corresponding punches holder of punches for the dividing transition and the upper plate, and the axis of the pair is aligned with the pressure center of the corresponding punch for dividing transition.
 4. The stamp according to claims 1 to 3, characterized in that the balancer is made in the form of spring shock absorbers, each containing pressure pins in contact, one of which is rigidly fixed to one of the plates, a spring located between the other pin and the other plate, and cups covering this pin and spring and mounted on this plate.
 5. The stamp according to claims 1 to 4, characterized in that the shock absorbers are located at a maximum distance from the center of pressure of the punches for form-changing transitions within the stamp.
 6. A stamp according to claims 1 to 5, characterized in that the balancer is made of two parts located symmetrically with respect to the feed axis of the workpieces, and the force perceived by each part is equal to half the total force of the balancer.
 7. The stamp according to claims 1 to 6, characterized in that each position with a punch for the dividing transition is equipped with a flange centering the spherical heel along the pressure axis of this position and having a shoulder, and a clip covering the self-centering thrust bearing and having a shoulder located with the possibility of interaction at the return stroke with a flange flange.
RU92014839A 1992-12-29 1992-12-29 Progressive die RU2016687C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU92014839A RU2016687C1 (en) 1992-12-29 1992-12-29 Progressive die

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU92014839A RU2016687C1 (en) 1992-12-29 1992-12-29 Progressive die

Publications (2)

Publication Number Publication Date
RU2016687C1 true RU2016687C1 (en) 1994-07-30
RU92014839A RU92014839A (en) 1995-08-20

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RU92014839A RU2016687C1 (en) 1992-12-29 1992-12-29 Progressive die

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959447A (en) * 2015-07-14 2015-10-07 武汉理工大学 Unbalanced load active balance precise stamping die structure
CN106734589A (en) * 2017-01-16 2017-05-31 重庆润玉机械制造有限公司 The incremental pressing die of automobile central control system keel shoe
RU176134U1 (en) * 2017-04-26 2018-01-09 Общество с ограниченной ответственностью "Информационные технологии" (ООО "Инфо Тех") STAMP FOR PRESSING BRONZE FRAME FROM THE STEEL ANCHOR OF ELECTROMAGNETIC RELAY

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
1. Авторское свидетельство СССР N 770612, кл. B 21D 28/14, 1978. *
2. Авторское свидетельство СССР N 1088846, кл. B 21D 28/14, 1983. *
3. Авторское свидетельство СССР N 1232334, кл. B 21D 28/14, 1984. *
4. Дурандин М.М. и др. Штампы для холодной штамповки мелких деталей. Альбом конструкций и схем. М.: Машиностроение, 1978, с.29, фиг.210. *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959447A (en) * 2015-07-14 2015-10-07 武汉理工大学 Unbalanced load active balance precise stamping die structure
CN106734589A (en) * 2017-01-16 2017-05-31 重庆润玉机械制造有限公司 The incremental pressing die of automobile central control system keel shoe
RU176134U1 (en) * 2017-04-26 2018-01-09 Общество с ограниченной ответственностью "Информационные технологии" (ООО "Инфо Тех") STAMP FOR PRESSING BRONZE FRAME FROM THE STEEL ANCHOR OF ELECTROMAGNETIC RELAY

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