CN113232350A - Press machine - Google Patents
Press machine Download PDFInfo
- Publication number
- CN113232350A CN113232350A CN202110567362.9A CN202110567362A CN113232350A CN 113232350 A CN113232350 A CN 113232350A CN 202110567362 A CN202110567362 A CN 202110567362A CN 113232350 A CN113232350 A CN 113232350A
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- Prior art keywords
- rod
- connecting rod
- hinged
- gear
- transmission
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Classifications
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- 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
- B30B1/10—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 toggle mechanism
- B30B1/103—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 toggle mechanism operated by screw means
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention relates to a press machine, which comprises a rack, a transmission part, a multi-connecting-rod force-increasing mechanism and a stamping executing part, wherein the transmission part, the multi-connecting-rod force-increasing mechanism and the stamping executing part are all arranged on the rack; the hinged shafts of the first connecting rod, the second connecting rod and the third connecting rod are all arranged in parallel; the multi-link component converts the linear movement of the tail end of the transmission component into the linear movement of the punching executive component so as to punch a workpiece. The press machine has the advantages of compact structure, small volume, obvious force increasing effect and improved mechanical efficiency.
Description
Technical Field
The invention relates to the technical field of presses, in particular to a press.
Background
The press is a forging and pressing device widely used in the field of metal forming and processing, and has a variety and a large number, and among them, the mechanical press is most widely used. The alloy is mainly used in the industries of automobiles, aerospace, metallurgy, electric power and the like. The existing press types comprise a screw press, a crank connecting rod press and a multi-connecting rod press, the presses have great difference in structure and are also different in working performance: the screw press converts the rotation of the motor into the reciprocating linear movement of the sliding block through screw transmission, realizes the functions of stamping, forging and the like, and has lower productivity and mechanical efficiency; the crank connecting rod press drives a crank shaft to move through a flywheel and then converts the crank shaft into the up-and-down reciprocating linear movement of the sliding block, and has the defects of large volume, large instantaneous impact, short service life and the like; the multi-connecting-rod press machine is characterized in that the screw press machine and the crank-connecting-rod press machine are arranged on the base, the motor rotates to drive the gear reduction box to transmit power, and the whole device is large in size and high in cost.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problems of low mechanical efficiency and large volume of the press in the prior art, and provide the press which has compact structure, small volume, obvious force increasing effect and improved mechanical efficiency.
In order to solve the technical problems, the invention provides a press machine, which comprises a rack, a transmission part, a multi-connecting-rod force increasing mechanism and a stamping executing part, wherein the transmission part, the multi-connecting-rod force increasing mechanism and the stamping executing part are all arranged on the rack; the hinged shafts of the first connecting rod, the second connecting rod and the third connecting rod are all arranged in parallel; the multi-link component converts the linear movement of the tail end of the transmission component into the linear movement of the punching executive component so as to punch a workpiece.
In one embodiment of the present invention, the second link includes a first lever arm and a second lever arm, one end of the first lever arm and one end of the second lever arm are fixedly connected to a middle portion of the second link, the other end of the first lever arm is hinged to a distal end of the transmission part, and the other end of the second lever arm is hinged to the third link.
In one embodiment of the invention, the first lever arm and the second lever arm intersect at an angle of 100 ° to 130 °.
In one embodiment of the present invention, the transmission part includes a transmission block and a screw mechanism, the transmission block is connected to the screw mechanism, the screw mechanism drives the transmission block to move linearly, and the second link included in the multi-link part is hinged to the transmission block and symmetrically hinged to two sides of the transmission block.
In an embodiment of the present invention, a first linear rail is disposed on the frame, and the transmission block is connected to the first linear rail and can move along the first linear rail.
In one embodiment of the invention, the driving device further comprises a driving part, the driving part comprises a pair of gear sets, a first gear of the pair of gear sets is connected with a power source, a second gear of the pair of gear sets is coaxially connected with a transmission rod of the screw rod mechanism, and the pair of gear sets converts the rotation of the power source into the linear movement of the transmission block.
In one embodiment of the present invention, the pair of gear sets are arranged as bevel gear sets, and the gear shafts of the first gear and the second gear are arranged vertically.
In one embodiment of the invention, the first gears comprise two gears which are meshed with the second gear, and the two first gears are symmetrically arranged on two sides of the second gear and are respectively connected with the power sources.
In one embodiment of the invention, the power source is provided as a servo motor, and the servo motor is supported by the frame.
In an embodiment of the present invention, the frame is further provided with a second linear sliding rail, and the stamping executing part is connected to the second linear sliding rail and can move along the second linear rail.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the press machine comprises a transmission part, a multi-connecting-rod force increasing mechanism and a stamping executing part, wherein the transmission part transmits the power of a power source of the press machine to the multi-connecting-rod force increasing mechanism, and the multi-connecting-rod force increasing mechanism transmits the power transmitted by the transmission part to the stamping executing part so as to realize that the stamping executing part moves to complete workpiece stamping; the multi-connecting-rod force increasing mechanism comprises a group of multi-connecting-rod parts which are symmetrically arranged, each multi-connecting-rod part comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of each first connecting rod is hinged with the rack, the other end of each first connecting rod is hinged with the middle part of the corresponding second connecting rod, one end of each second connecting rod is hinged with the tail end of the corresponding transmission part, the other end of each second connecting rod is hinged with one end of the corresponding third connecting rod, and the other end of each third connecting rod is hinged with the corresponding stamping executing part; the multi-connecting-rod force increasing mechanism with optimized structural design amplifies the force applied at the tail end of the transmission part, and has obvious force increasing effect, namely, a smaller input force is applied at the tail end of the transmission part, and a large output force is obtained at the position of the stamping executing part after the multi-connecting-rod force increasing mechanism, so that the mechanical efficiency of the press is greatly improved. The press machine has the advantages of compact structure, small volume, obvious force increasing effect and improvement on mechanical efficiency.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is an isometric view of a press in accordance with a preferred embodiment of the present invention;
FIG. 2 is a front view of the press shown in FIG. 1;
FIG. 3 is a schematic view of a multi-link force amplifier of the press of FIG. 1;
FIG. 4 is a schematic illustration of the movement of the press shown in FIG. 1;
FIG. 5 is a schematic view of the movement of the multi-link force amplifier when the press actuator is moved to the first dead center position;
FIG. 6 is a schematic view of the movement of the multi-link force amplifier when the press actuator is moved to the second dead center position;
FIG. 7 is an isometric view of the press under redundant actuation from dual power sources.
The specification reference numbers indicate: 2-a frame, 21-a first linear track, 22-a second linear track;
4-transmission part, 41-transmission block, 42-transmission rod; 6-a multi-link force-increasing mechanism, 61-a first link, 62-a second link, 63-a third link, 64-a first lever arm, 65-a second lever arm; 8-stamping an executive component; 9-drive part, 91-first gear, 92-second gear, 93-servomotor.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1 to 3, an embodiment of the invention discloses a press machine, which includes a frame 2, a transmission component 4, a multi-link force-increasing mechanism 6 and a press actuator 8, wherein the transmission component 4, the multi-link force-increasing mechanism 6 and the press actuator 8 are all arranged on the frame 2, the multi-link force-increasing mechanism 6 includes a group of symmetrically arranged multi-link components, the multi-link components include a first link 61, a second link 62 and a third link 63, one end of the first link 61 is hinged to the frame 2, the other end of the first link is hinged to the middle of the second link 62, one end of the second link 62 is hinged to the tail end of the transmission component 4, the other end of the second link 62 is hinged to one end of the third link 63, and the other end of the third link 63 is hinged to the press actuator 8; the hinge shafts of the first connecting rod 61, the second connecting rod 62 and the third connecting rod 63 are all arranged in parallel; the multi-link member converts the linear movement of the end of the transmission member 4 into the linear movement of the punching actuator 8 to punch a workpiece.
The press comprises a transmission part 4, a multi-connecting-rod force increasing mechanism 6 and a stamping executing part 8. The power transmission of the power source of the press machine is transmitted to the multi-connecting-rod force increasing mechanism 6 through the transmission part 4, specifically, the transmission part comprises a transmission block 41 and a screw rod mechanism, the transmission block 41 is connected with the screw rod mechanism, the screw rod mechanism drives the transmission block 41 to move linearly, and the second connecting rod 41 which is hinged to the transmission block 41 and symmetrically hinged to the two sides of the transmission block 41 comprises the multi-connecting-rod part. The screw mechanism transmits the power of a power source of the press to the transmission block 41, and converts the rotation of the power source into the linear movement of the transmission block 41, wherein, in order to ensure the linear movement track of the transmission block 41, a first linear rail 41 is arranged on the frame 2, and the transmission block 41 is connected with the first linear rail 21 and can move along the first linear rail 21.
The multi-link force increasing mechanism 6 transmits the power transmitted by the transmission part 4 to the punching executive component 8, and converts the linear movement of the transmission block 41 into the linear movement of the punching executive component 8, so that the punching executive component 8 moves to complete workpiece punching. Specifically, the multi-link force increasing mechanism 6 includes a set of symmetrically arranged multi-link components, the multi-link components include a first link 61, a second link 62 and a third link 63, one end of the first link 61 is hinged to the frame 2, the other end of the first link is hinged to the middle of the second link 62, one end of the second link 62 is hinged to the tail end of the transmission component 4, the other end of the second link is hinged to one end of the third link 63, and the other end of the third link 63 is hinged to the stamping executing component 8; the multi-connecting-rod force increasing mechanism with optimized structural design amplifies the force applied at the tail end of the transmission part, and the force increasing effect is obvious, namely, a smaller input force is applied at the tail end of the transmission part 4, and a large output force is obtained at the position of the stamping executing part 8 after passing through the multi-connecting-rod force increasing mechanism 6, so that the mechanical efficiency is greatly improved.
Specifically, referring to fig. 3, the second link 62 includes a first lever arm 64 and a second lever arm 65, one end of each of the first lever arm 64 and the second lever arm 65 is located in the middle of the second link 62 and fixedly connected, the other end of the first lever arm 64 is hinged to the end of the transmission part 4 (provided as the transmission block 41), and the other end of the second lever arm 65 is hinged to the third link 63; the first lever arm 64 and the second lever arm 65 are fixedly connected to achieve a force increasing effect, in a preferred embodiment, an intersection angle between the first lever arm 64 and the second lever arm 65 is 100-130 degrees, the intersection angle between the first lever arm 64 and the second lever arm 65 is flexibly adjusted according to an actually required force increasing multiple, and when the intersection angle between the first lever arm 64 and the second lever arm 65 is 120 degrees, the force increasing multiple is maximum, and the force increasing effect is optimal.
The multi-link force increasing mechanism 6 includes two six-link mechanisms respectively located on two sides of the transmission block 41, the six-link mechanisms are equivalent to a four-link mechanism and a five-link mechanism, and are respectively a four-link mechanism composed of a first link 61, a first lever arm 64, a frame 2 and the transmission block 41, wherein one end of the first link 61 is connected with the frame 2 through a revolute pair, the other end of the first link 64 is connected with the first lever arm 64 through a revolute pair, the other end of the first lever arm 64 is connected with the transmission block 41 through a revolute pair, and the axial directions of the revolute pairs are parallel to each other. The four-bar linkage mechanism of the other group of multi-bar linkage parts has the same structure.
And a five-link mechanism composed of the first link 61, the second link 65, the third link 63, the press actuator 8, and the frame. One end of the first connecting rod 61 is connected with the frame 2 through a revolute pair, the other end of the first connecting rod is connected with the second lever arm 65 through a revolute pair, the other end of the second lever arm 65 is connected with the third connecting rod 63 through a revolute pair, the other end of the third connecting rod 63 is connected with the stamping executing part 8 through a revolute pair, and the axial directions of the revolute pairs are parallel to each other. The five-link mechanism structure of the other group of multi-link components is consistent.
The multi-link force amplifier 6 described above realizes: referring to fig. 4, 5 and 6, when the transmission block 41 moves linearly upward, the multi-link force amplifier 6 drives the punching actuator 8 to move linearly downward; on the contrary, when the transmission block 41 moves linearly downwards, the multi-link force increasing mechanism 6 drives the punching executing part 8 to move linearly upwards.
The six-link mechanism can improve the anti-unbalance loading capability, reduce the transverse load of the stamping executive component 8 on the track, and maintain the stamping precision for a long time. Meanwhile, the symmetrical six-link mechanism can counteract the horizontal lateral force borne by the input end of the stamping executing part 8 and the output end of the transmission block 41, and reduces the friction of the track and the deformation of the rack.
The press machine further comprises a driving part, as shown in fig. 1-3, the driving part comprises a power source and a pair of gear sets, a first gear 91 of each gear set is connected with the power source, a second gear 92 of each gear set is coaxially connected with the transmission rod 42 of the screw rod mechanism, and the rotation of the power source is converted into linear movement of the transmission block 41 by the gear sets. In the technical solution of this embodiment, the power source preferably uses a servo motor, and the position control accuracy of the servo motor supported by the frame servo motor is very high, but there are also disadvantages: the output torque force is small, so that a large-tonnage press cannot be constructed by adopting the servo motor, the disadvantage and disadvantage of combining the servo motor in the prior art are caused, and the servo motor cannot be applied to the large-tonnage press. The multi-connecting-rod force increasing mechanism 6 well solves the technical problem, and the output torque force effect which can be comparable to that of a series motor is obtained by amplifying the output torque force of the servo motor through the multi-connecting-rod force increasing mechanism 6.
Furthermore, the pair of gear sets are arranged to be bevel gear sets, wheel shafts of the first gear 91 and the second gear 92 are perpendicular to each other and are arranged to be bevel gear sets, so that the first gear 91 can be directly connected with the horizontal servo motor, the second gear can be directly connected with the transmission rod 42, an additional power conversion mechanism is not needed, and the overall size reduction of the press machine is facilitated.
Generally, the press machine is provided with a set of power sources, in other real-time technical solutions, the press machine of the present invention may also be provided with redundant power, as shown in fig. 7, the first gear 91 includes two gears both meshed with the second gear 92, and the two first gears 91 are symmetrically disposed on both sides of the second gear 92 and are respectively connected to the respective power sources.
The working process of the press machine is as follows: the rotation speed and the rotation direction of the servo motor are controlled, the rotation of the servo motor is converted into the vertical linear movement of the transmission block 41 through the pair of gear sets, on one hand, the vertical movement of the transmission block 41 is converted into the vertical movement of the stamping executive part 8 through the multi-connecting-rod force increasing mechanism 6, here, in order to restrict the movement track of the stamping executive part 8, a second linear sliding rail 22 is further arranged on the rack 2, the stamping executive part 8 is connected with the second linear sliding rail 22 and can move along the second linear rail 22, and the stamping executive part vertically moves a stamping workpiece. The multi-connecting-rod force increasing mechanism 6 amplifies the small torque force output by the transmission block 41, the force increasing effect is obvious, and the mechanical efficiency of the press machine is improved.
The press machine has the advantages of compact structure, small volume, obvious force increasing effect and improvement on mechanical efficiency.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A press machine characterized by: the multi-connecting-rod force increasing mechanism comprises a rack, a transmission part, a multi-connecting-rod force increasing mechanism and a stamping executing part, wherein the transmission part, the multi-connecting-rod force increasing mechanism and the stamping executing part are all arranged on the rack, the multi-connecting-rod force increasing mechanism comprises a group of multi-connecting-rod parts which are symmetrically arranged, each multi-connecting-rod part comprises a first connecting rod, a second connecting rod and a third connecting rod, one end of each first connecting rod is hinged to the rack, the other end of each first connecting rod is hinged to the middle of the corresponding second connecting rod, one end of each second connecting rod is hinged to the tail end of the transmission part, the other end of each second connecting rod is hinged to one end of the corresponding third connecting rod, and the other end of each third connecting rod is hinged to the stamping executing part; the hinged shafts of the first connecting rod, the second connecting rod and the third connecting rod are all arranged in parallel; the multi-link component converts the linear movement of the tail end of the transmission component into the linear movement of the punching executive component so as to punch a workpiece.
2. Press according to claim 1, characterized in that: the second connecting rod comprises a first rod arm and a second rod arm, one end of the first rod arm and one end of the second rod arm are fixedly connected with the middle of the second connecting rod, the other end of the first rod arm is hinged with the tail end of the transmission part, and the other end of the second rod arm is hinged with the third connecting rod.
3. Press according to claim 2, characterized in that: the intersection included angle of the first lever arm and the second lever arm is 100-130 degrees.
4. Press according to claim 1, characterized in that: the transmission part comprises a transmission block and a screw rod mechanism, the transmission block is connected with the screw rod mechanism, the screw rod mechanism drives the transmission block to move linearly, and the second connecting rod which is hinged to the transmission block and symmetrically hinged to the two sides of the transmission block is included in the multi-connecting-rod part.
5. Press according to claim 4, characterized in that: the rack is provided with a first linear track, and the transmission block is connected with the first linear track and can move along the first linear track.
6. Press according to claim 4, characterized in that: the driving part comprises a pair of gear sets, a first gear of each gear set is connected with a power source, a second gear of each gear set is coaxially connected with a transmission rod of the screw rod mechanism, and the gear sets convert the rotation of the power source into the linear movement of the transmission block.
7. Press according to claim 6, characterized in that: the pair of gear sets are bevel gear sets, and the wheel shafts of the first gear and the second gear are vertically arranged.
8. Press according to claim 6, characterized in that: the first gears comprise two gears which are meshed with the second gear, and the two first gears are symmetrically arranged on two sides of the second gear and are respectively connected with the respective power sources.
9. Press according to claim 6 or 8, characterized in that: the power source is set to be a servo motor, and the servo motor is supported on the rack.
10. Press according to claim 1, characterized in that: and the frame is also provided with a second linear sliding rail, and the stamping executing part is connected with the second linear sliding rail and can move along the second linear rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567362.9A CN113232350A (en) | 2021-05-24 | 2021-05-24 | Press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110567362.9A CN113232350A (en) | 2021-05-24 | 2021-05-24 | Press machine |
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| Publication Number | Publication Date |
|---|---|
| CN113232350A true CN113232350A (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110567362.9A Pending CN113232350A (en) | 2021-05-24 | 2021-05-24 | Press machine |
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| CN (1) | CN113232350A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328448A (en) * | 2011-09-30 | 2012-01-25 | 上海交通大学 | Multi-connecting-rod mechanical press with driven by three parallel servo motor inputs |
| US20130008325A1 (en) * | 2011-07-08 | 2013-01-10 | Yu-Ting Lin | Multi-linkage press |
| CN105798905A (en) * | 2016-05-12 | 2016-07-27 | 安徽六联智能科技有限公司 | Six-axis intelligent carrying mechanical hand for stamping |
| CN107695067A (en) * | 2017-11-13 | 2018-02-16 | 王欣欣 | A kind of weaving dust collection device of convenient recovery |
| CN108081654A (en) * | 2017-12-20 | 2018-05-29 | 丁继来 | A kind of cardboard flattening device |
| CN110295762A (en) * | 2019-06-28 | 2019-10-01 | 兰州理工大学 | Construction walling robot |
-
2021
- 2021-05-24 CN CN202110567362.9A patent/CN113232350A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130008325A1 (en) * | 2011-07-08 | 2013-01-10 | Yu-Ting Lin | Multi-linkage press |
| CN102328448A (en) * | 2011-09-30 | 2012-01-25 | 上海交通大学 | Multi-connecting-rod mechanical press with driven by three parallel servo motor inputs |
| CN105798905A (en) * | 2016-05-12 | 2016-07-27 | 安徽六联智能科技有限公司 | Six-axis intelligent carrying mechanical hand for stamping |
| CN107695067A (en) * | 2017-11-13 | 2018-02-16 | 王欣欣 | A kind of weaving dust collection device of convenient recovery |
| CN108081654A (en) * | 2017-12-20 | 2018-05-29 | 丁继来 | A kind of cardboard flattening device |
| CN110295762A (en) * | 2019-06-28 | 2019-10-01 | 兰州理工大学 | Construction walling robot |
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Application publication date: 20210810 |
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