CN118287615A - Novel toggle lever transmission mechanism for mechanical press - Google Patents
Novel toggle lever transmission mechanism for mechanical press Download PDFInfo
- Publication number
- CN118287615A CN118287615A CN202410727352.0A CN202410727352A CN118287615A CN 118287615 A CN118287615 A CN 118287615A CN 202410727352 A CN202410727352 A CN 202410727352A CN 118287615 A CN118287615 A CN 118287615A
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- Prior art keywords
- eccentric
- sliding block
- mechanical press
- shaft
- plunger
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 title abstract description 33
- 230000033001 locomotion Effects 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Classifications
-
- 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
- B21J9/10—Drives for forging presses
- B21J9/18—Drives for forging presses operated by making use of gearing mechanisms, e.g. levers, spindles, crankshafts, eccentrics, toggle-levers, rack bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/02—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by lever mechanism
- B30B1/06—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by lever mechanism operated by cams, eccentrics, or cranks
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention discloses a novel toggle rod transmission mechanism for a mechanical press, and belongs to the field of mechanical presses. The novel toggle link transmission mechanism comprises: the driving slide block is in a cube shape, connecting holes are formed in the front and rear directions of the driving slide block in a penetrating mode, two groups of pulling modules are symmetrically arranged in the left and right directions of the driving slide block, and guide modules are arranged in the up and down directions of the driving slide block in a sliding mode; and an eccentric shaft arranged in the connecting hole through an eccentric moving assembly. Through setting up this novel toggle link transmission structure, provide a cooperation drive mechanism of drive slider and toggle link, have the motion characteristic of approximate stopping in the workspace, satisfy technological requirements such as high-speed blanking, fine blanking and deep stretching, also have obvious reinforcement effect simultaneously, can reduce the moment of torsion demand of motor, be applicable to servo press, still be applicable to the two-point press simultaneously, two-point symmetry designs, make drive mechanism more stable, can effectively improve section quality, dimensional accuracy and the reduction shape error of work piece.
Description
Technical Field
The invention relates to the field of mechanical presses, in particular to a novel toggle rod transmission mechanism for a mechanical press.
Background
A mechanical press is a forging machine for press working a material into parts by applying strong pressure to a blank to deform and fracture the blank. The automatic press has the advantages of stable work, high working precision, good operating condition, high productivity, easy realization of mechanization and automation, suitability for working on an automatic line and wide application in industrial mechanical presses of automobiles, ships and the like.
At present, most of transmission mechanisms of common mechanical presses are crank-link mechanisms, and the motion characteristics of the mechanisms are poor, and the transmission mechanisms are mainly used for forming processes such as blanking, flanging, bending, trimming, shallow stretching and the like with low speed requirements. However, with the development of the stamping process, such as high-speed blanking, fine blanking, deep drawing and other processes, the requirements on the motion characteristics of the transmission mechanism are also higher and higher; meanwhile, with the development of a servo press, the common crank-link mechanism does not have obvious reinforcement effect, and has higher requirement on the capacity of a servo motor, so that the tonnage of the crank-link type servo press is generally not large.
Disclosure of Invention
In order to solve the technical problems, the invention provides a novel toggle rod transmission mechanism for a mechanical press.
The technical scheme of the invention is as follows: a novel toggle drive mechanism for a mechanical press, comprising:
the driving sliding block is cubic, connecting holes are formed in the driving sliding block in a penetrating mode in the front-back direction, two groups of pulling modules are symmetrically arranged in the left-right direction of the driving sliding block, and guide modules are arranged in the driving sliding block in the up-down direction;
The eccentric shaft is arranged in the connecting hole through the eccentric moving assembly;
The eccentric movement assembly includes: the eccentric slide block is provided with a round hole in the middle of the eccentric slide block, an eccentric disc of an eccentric shaft is arranged in the round hole in a rotating mode, the eccentric slide block is fixedly connected with an eccentric slide plate, the eccentric slide plate is arranged in an eccentric slide rail in a sliding mode, the eccentric slide rail is fixedly connected with a connecting hole, the eccentric slide rail is horizontally arranged along the left-right direction, and the length of the eccentric slide rail is larger than the maximum outer diameter of the eccentric shaft.
Further, the pulling module includes:
the upper end of the pull rod is hinged with the driving sliding block, and the lower end of the pull rod is hinged with the upper end of the main rocker;
the lower end of the main rocker is hinged with the upper end of the plunger rocker, and the main rocker is rotatably arranged on the frame through a fixed shaft; and
The lower end of the plunger rocker is hinged with the upper end of the first plunger, and the first plunger is arranged in the first plunger seat. Namely, the first plunger is pulled through the arrangement of the pulling module.
Further, the main rocker comprises a vertical portion and a side portion which are integrally arranged, the vertical portion is provided with a fixed shaft in a rotating mode, meanwhile, the lower end of the vertical portion is hinged to the plunger rocker, and the side portion is hinged to the pull rod. I.e. the main rocker is arranged like a 7-shaped. Namely, the fixed shaft of the main rocker and the three central axes of the two hinge shafts at the upper end and the lower end are positioned on at least two planes.
Further, the hinging directions of the pull rod, the main rocker and the plunger rocker are all the front and back directions of the driving sliding block and are parallel to each other. The normal work of pulling module has been guaranteed, and the articulated pin that connects in addition guarantees the stability of connection.
Further, the eccentric shaft comprises a main shaft, an eccentric disc is arranged on the main shaft, and the main shaft is staggered and parallel to the central shaft of the eccentric shaft. Through the staggered arrangement, the eccentricity of the eccentric shaft is ensured.
Further, two eccentric discs are arranged, and the two eccentric discs are parallel and the central shafts of the two eccentric discs are coaxially arranged. The eccentric driving can be synchronously carried out on the front side and the rear side of the driving slide block.
Further, the connecting hole is a rectangular hole, and an eccentric sliding rail is fixedly arranged on the inner wall of the rectangular hole. The eccentric shaft is ensured to move horizontally and reciprocally relatively when in operation. The eccentric shaft adopts a scotch yoke structure. Avoiding movements that form line contacts.
Further, the upper side and the lower side of the eccentric sliding block are horizontally arranged, and the upper side and the lower side of the eccentric sliding block are respectively and fixedly provided with an eccentric sliding plate. The stability of arranging the eccentric sliding plates on the upper side and the lower side is ensured, and the relative horizontal reciprocating movement between the eccentric sliding plates is further ensured.
Further, the guide module includes:
The guide rail is fixedly arranged on the driving sliding block, and the guiding direction of the guide rail is a vertical direction;
The guide block is arranged in the guide rail in a sliding manner; and
One end of the guide block pin is fixedly connected with the guide block, and the other end of the guide block pin is fixedly connected with the frame. Through the arrangement of the guide module, the driving sliding block can be ensured to stably move along the vertical direction.
Further, the guide module is provided with at least two groups, and at least one group is respectively arranged on the front side and the rear side of the driving sliding block. The guide modules are arranged in the front-back direction, so that the stability of the driving sliding block in the moving process can be further ensured. In addition, generally, four groups of guide modules are arranged, two guide modules are respectively arranged on the same side of the front side and the rear side and are respectively positioned on the upper side and the lower side of the eccentric shaft, and when eccentric driving is ensured through the four groups of guide modules, the driving sliding block can move more stably.
The beneficial technical effects of the invention are as follows: through setting up this novel toggle link transmission structure, provide the cooperation drive mechanism of a drive slider and toggle link, have the motion characteristic of approximate stopping in the workspace, satisfy technological requirements such as high-speed blanking, fine blanking and deep stretching, also have obvious reinforcement effect simultaneously, can reduce the moment of torsion demand of motor, be applicable to servo press, still be applicable to the two-point press simultaneously, two-point symmetry designs are furnished with structures such as guide block, plunger seat simultaneously, make drive mechanism more stable, can effectively improve the section quality of work piece, dimensional accuracy and reduce shape error.
The invention converts uniform rotation motion of the eccentric shaft into up-down linear reciprocating motion of the driving slide block by arranging the driving slide block and the guiding module thereof, and simultaneously drives the toggle rod mechanism by the driving slide block so as to make the plunger do up-down linear reciprocating motion. The crank toggle mechanism is a transmission mechanism commonly used for a mechanical press and is a six-bar mechanism in essence, and the invention is a compound combination of a scotch yoke mechanism and a six-bar mechanism, so that lower and more uniform stamping speed can be obtained in a working area.
Drawings
Fig. 1 is a schematic perspective view of a novel toggle link transmission.
Fig. 2 is an enlarged view of a portion of the guide module.
Fig. 3 is an exploded schematic view of the novel toggle drive mechanism.
Fig. 4 is a schematic view of an eccentric shaft.
Fig. 5 is a schematic view of the main rocker.
Fig. 6 is a schematic view of a drive slider.
Fig. 7 is a schematic view of an eccentric displacement assembly.
In the figure:
1. The sliding block is driven to move along the sliding block,
2. The connecting hole is provided with a connecting hole,
3. The pulling module is 31, a pull rod, 32, a main rocker, 33, a plunger rocker, 34, a fixed shaft, 35, a first plunger, 36 and a first plunger seat;
4. A guide module, 41, a guide rail, 42, a guide block, 43, a guide pin,
5. Eccentric shaft, 51, eccentric disc, 52, main shaft,
6. Eccentric moving assembly 61, eccentric slide block 611, round hole 62, eccentric slide plate 63, eccentric slide rail.
Detailed Description
In order that the manner in which the above recited features of the present invention are attained and can be understood in detail, a more particular description of the invention, briefly summarized below, may be had by reference to the appended drawings and examples, which are illustrated in their embodiments, but are not intended to limit the scope of the invention.
Referring to fig. 1-7, a novel toggle drive mechanism for a mechanical press according to this embodiment comprises: the driving slide block 1, the driving slide block 1 is a cube, the connecting holes 2 are penetrated along the front and back directions of the driving slide block 1, two groups of pulling modules 3 are symmetrically arranged in the left and right directions of the driving slide block 1, and the guiding modules 4 are arranged in a sliding manner along the up and down directions of the driving slide block 1; the eccentric shaft 5 is disposed in the connecting hole 2 by an eccentric moving assembly 6.
Further, referring to fig. 7, the eccentric moving assembly 6 includes: the eccentric slide block 61 is provided with a round hole 611 in the middle of the eccentric slide block 61, the round hole 611 is rotated to be provided with the eccentric disc 51 of the eccentric shaft 5, the eccentric slide block 61 is fixedly connected with the eccentric slide plate 62, the eccentric slide plate 62 is arranged in the eccentric slide rail 63 in a sliding way, the eccentric slide rail 63 is fixedly connected with the connecting hole 2, the eccentric slide rail 63 is horizontally arranged along the left-right direction, and the length of the eccentric slide rail 63 is larger than the maximum outer diameter of the eccentric shaft 5.
Further, referring to fig. 1 and 3, the pulling module 3 includes:
the upper end of the pull rod 31 is hinged with the driving slide block 1, and the lower end of the pull rod 31 is hinged with the upper end of the main rocker 32;
The lower end of the main rocker 32 is hinged with the upper end of the plunger rocker 33, and the main rocker 32 is rotatably arranged on the frame through a fixed shaft 34; and
The lower end of the plunger rocker 33 is hinged to the upper end of the first plunger 35, and the first plunger 35 is disposed in the first plunger seat 36. I.e. by the arrangement of the pulling module 3, the pulling of the first plunger 35 is ensured.
Further, the main rocker 32 includes an integrally provided vertical portion on which the fixed shaft 34 is rotatably provided, and a side portion hinged to the pull rod 31, while the lower end of the vertical portion is hinged to the plunger rocker 33. I.e. the main rocker 32 is arranged in a 7-like shape. I.e., the fixed shaft 34 of the main rocker 32, and the three central axes of the two hinge shafts at the upper and lower ends are located in at least two planes.
Further, the hinging directions of the pull rod 31, the main rocker 32 and the plunger rocker 33 are all the front-back directions of the driving slide block 1 and are parallel to each other. The normal work of the pulling module 3 is guaranteed, and the hinge is connected through the pin, so that the stability of connection is guaranteed.
Further, referring to fig. 4, the eccentric shaft 5 includes a main shaft 52, an eccentric disc is disposed on the main shaft 52, and the main shaft 52 is offset from and parallel to the central axis of the eccentric shaft 5. By the staggered arrangement, the eccentricity of the eccentric shaft 5 is ensured.
Further, two eccentric discs are arranged, and the two eccentric discs are parallel and the central shafts of the two eccentric discs are coaxially arranged. The eccentric driving can be synchronously performed on the front side and the rear side of the driving slide block 1.
Further, the connecting hole 2 is a rectangular hole, and an eccentric sliding rail 63 is fixedly arranged on the inner wall of the rectangular hole. That is, the eccentric shaft 5 can be ensured to move horizontally and reciprocally relatively during operation. The eccentric shaft 5 is of scotch yoke construction. Avoiding movements that form line contacts.
Further, the upper and lower sides of the eccentric slider 61 are horizontally disposed, and the eccentric slider 61 is fixedly disposed with the eccentric slide plate 62 at the upper and lower sides thereof, respectively. The stability of the eccentric sliding plates 62 arranged on the upper side and the lower side is ensured, and the relative horizontal reciprocating movement between the eccentric sliding plates and the upper side is further ensured.
Further, referring to fig. 2, the guide module 4 includes:
The guide rail 41 is fixedly arranged on the driving slide block 1, and the guiding direction of the guide rail 41 is a vertical direction;
a guide block 42, the guide block 42 being slidably disposed within the guide rail 41; and
And one end of the guide pin 43 and one end of the guide block 42 are fixedly connected with the guide block 42, and the other end of the guide block 42 is fixedly connected with the frame. By means of the arrangement of the guide modules 4, it is ensured that the driving slide 1 can be moved stably in the vertical direction.
Further, the guiding modules 4 are provided with at least two groups, and at least one group is respectively arranged on the front side and the rear side of the driving sliding block 1. Namely, the guide modules 4 are arranged in the front and back directions, so that the stability of the driving sliding block 1 in the moving process can be further ensured. In general, four sets of guide modules 4 are provided, two guide modules are respectively provided on the same side of the front and rear sides and are respectively positioned on the upper and lower sides of the eccentric shaft 5, and when eccentric driving is ensured by the four sets of guide modules 4, the driving slide block 1 can move more stably.
Through setting up this novel toggle link transmission structure, provide the cooperation drive mechanism of a drive slider 1 and toggle link, have the motion characteristic of approximate stopping in the workspace, satisfy technological requirements such as high-speed blanking, fine blanking and deep stretching, also have obvious reinforcement effect simultaneously, can reduce the moment of torsion demand of motor, be applicable to servo press, still be applicable to the two-point press simultaneously, two-point symmetry designs are furnished with structures such as guide block 42, plunger seat simultaneously, make drive mechanism more stable, can effectively improve the section quality of work piece, dimensional accuracy and reduce shape error.
The invention converts uniform rotation motion of the eccentric shaft into up-down linear reciprocating motion of the driving slide block by arranging the driving slide block and the guiding module thereof, and simultaneously drives the toggle rod mechanism by the driving slide block so as to make the plunger do up-down linear reciprocating motion. The crank toggle mechanism is a transmission mechanism commonly used for a mechanical press and is a six-bar mechanism in essence, and the invention is a compound combination of a scotch yoke mechanism and a six-bar mechanism, so that lower and more uniform stamping speed can be obtained in a working area.
Specifically, when in use:
The guide block pin and the fixed shaft are fixedly connected with the frame, when an output shaft of the servo motor is connected with the eccentric shaft, the eccentric disc drives the driving sliding block to move up and down along the direction of the guide module when rotating, and meanwhile, the pull rod moves up and down in the process of moving up and down, and acts on the first plunger seat through the pull rod, the main rocker, the plunger rocker and the first plunger, so that the control of the whole mechanical press is realized.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. A novel toggle link transmission for a mechanical press, comprising:
The driving sliding block (1), the driving sliding block (1) is a cube, a connecting hole (2) is penetrated and arranged along the front-back direction of the driving sliding block (1), two groups of pulling modules (3) are symmetrically arranged along the left-right direction of the driving sliding block (1), and a guiding module (4) is arranged along the up-down direction of the driving sliding block (1) in a sliding manner;
the eccentric shaft (5) is arranged in the connecting hole (2) through the eccentric moving assembly (6); and
The eccentric movement assembly (6) comprises: eccentric slider (61) the middle part of eccentric slider (61) sets up round hole (611), just round hole (611) internal rotation sets up eccentric dish (51) of eccentric shaft (5), fixed connection eccentric slide (62) on eccentric slider (61), eccentric slide (62) slip sets up in eccentric slide (63), eccentric slide (63) and connecting hole (2) fixed connection, just eccentric slide (63) are along controlling the direction and be the level setting, the length of eccentric slide (63) is greater than the biggest external diameter of eccentric shaft (5).
2. The novel toggle linkage for a mechanical press of claim 1, wherein: the pulling module (3) comprises:
The upper end of the pull rod (31) is hinged with the driving sliding block (1), and the lower end of the pull rod (31) is hinged with the upper end of the main rocker (32);
The lower end of the main rocker (32) is hinged with the upper end of the plunger rocker (33), and the main rocker (32) is rotatably arranged on the rack through a fixed shaft (34); and
The lower end of the plunger rocker (33) is hinged with the upper end of the first plunger (35), and the first plunger (35) is arranged in the first plunger seat (36).
3. The novel toggle linkage for a mechanical press of claim 2, wherein: the main rocker (32) comprises a vertical part and a side part which are integrally arranged, a fixed shaft (34) is rotatably arranged on the vertical part, meanwhile, the lower end of the vertical part is hinged with the plunger rocker (33), and the side part is hinged with the pull rod (31).
4. The novel toggle linkage for a mechanical press of claim 2, wherein: the hinging directions of the pull rod (31), the main rocker (32) and the plunger rocker (33) are all the front-back directions of the driving sliding block (1) and are parallel to each other.
5. The novel toggle linkage for a mechanical press of claim 1, wherein: the eccentric shaft (5) comprises a main shaft (52), an eccentric disc is arranged on the main shaft (52), and the main shaft (52) is staggered with and parallel to the central shaft of the eccentric shaft (5).
6. The novel toggle linkage for a mechanical press of claim 5, wherein: the eccentric discs are arranged in two, and the two eccentric discs are parallel and the central shafts of the two eccentric discs are coaxially arranged.
7. The novel toggle linkage for a mechanical press of claim 1, wherein: the connecting hole (2) is a rectangular hole, and an eccentric sliding rail (63) is fixedly arranged on the inner wall of the rectangular hole.
8. The novel toggle linkage for a mechanical press of claim 1, wherein: the upper side and the lower side of the eccentric sliding block (61) are horizontally arranged, and eccentric sliding plates (62) are respectively and fixedly arranged on the upper side and the lower side of the eccentric sliding block (61).
9. The novel toggle linkage for a mechanical press of claim 1, wherein: the guide module (4) comprises:
The guide rail (41) is fixedly arranged on the driving sliding block (1), and the guiding direction of the guide rail (41) is a vertical direction;
a guide block (42), the guide block (42) being slidably disposed within the guide rail (41); and
And one end of the guide block (42) pin is fixedly connected with the guide block (42), and the other end of the guide block (42) pin is fixedly connected with the frame.
10. The novel toggle linkage for a mechanical press of claim 1, wherein: the guide module (4) is provided with at least two groups, and at least one group is respectively arranged on the front side and the rear side of the driving sliding block (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410727352.0A CN118287615B (en) | 2024-06-06 | 2024-06-06 | Novel toggle lever transmission mechanism for mechanical press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410727352.0A CN118287615B (en) | 2024-06-06 | 2024-06-06 | Novel toggle lever transmission mechanism for mechanical press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118287615A true CN118287615A (en) | 2024-07-05 |
| CN118287615B CN118287615B (en) | 2024-10-18 |
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ID=91676687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410727352.0A Active CN118287615B (en) | 2024-06-06 | 2024-06-06 | Novel toggle lever transmission mechanism for mechanical press |
Country Status (1)
| Country | Link |
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| CN (1) | CN118287615B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07304000A (en) * | 1994-05-11 | 1995-11-21 | Komatsu Ltd | Press machine |
| DE20309488U1 (en) * | 2003-06-20 | 2003-09-04 | Chang, Shih-Chi, Taichung | Punching device has eccentric device, at least one crank lever, at least one spring arm, at least one connecting arm, at least one working arm, and mold |
| US20040221640A1 (en) * | 2003-05-07 | 2004-11-11 | Shih-Chi Chang | Punching mechanism for punching press with multiple Linking rods |
| CN103331924A (en) * | 2013-06-26 | 2013-10-02 | 扬州锻压机床股份有限公司 | Two-point toggle rod mechanism |
| CN103495633A (en) * | 2013-09-23 | 2014-01-08 | 广东宏兴机械有限公司 | Multifunctional servo crank knuckle-lever press |
-
2024
- 2024-06-06 CN CN202410727352.0A patent/CN118287615B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07304000A (en) * | 1994-05-11 | 1995-11-21 | Komatsu Ltd | Press machine |
| US20040221640A1 (en) * | 2003-05-07 | 2004-11-11 | Shih-Chi Chang | Punching mechanism for punching press with multiple Linking rods |
| DE20309488U1 (en) * | 2003-06-20 | 2003-09-04 | Chang, Shih-Chi, Taichung | Punching device has eccentric device, at least one crank lever, at least one spring arm, at least one connecting arm, at least one working arm, and mold |
| CN103331924A (en) * | 2013-06-26 | 2013-10-02 | 扬州锻压机床股份有限公司 | Two-point toggle rod mechanism |
| CN103495633A (en) * | 2013-09-23 | 2014-01-08 | 广东宏兴机械有限公司 | Multifunctional servo crank knuckle-lever press |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118287615B (en) | 2024-10-18 |
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