CN109500337B - Servo press main transmission mechanism of lead screw ellipsograph mechanism - Google Patents
Servo press main transmission mechanism of lead screw ellipsograph mechanism Download PDFInfo
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- CN109500337B CN109500337B CN201811566506.3A CN201811566506A CN109500337B CN 109500337 B CN109500337 B CN 109500337B CN 201811566506 A CN201811566506 A CN 201811566506A CN 109500337 B CN109500337 B CN 109500337B
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- connecting rod
- screw
- sliding block
- machine body
- pin shaft
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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 discloses a servo press main transmission mechanism of a lead screw ellipsograph mechanism, which comprises a machine body, a sliding block guide rail, a servo motor, a lead screw, a screw nut pin shaft, a long connecting rod and a short connecting rod, wherein the sliding block guide rail is arranged on the machine body; the sliding block is hinged to the middle position of the machine body and can slide up and down along the sliding block guide rail; the screw rod is arranged at the middle position of the machine body beam; the screw is embedded in the screw pin shaft and is arranged on the screw rod; the servo motor is fixed on the machine body and drives the screw rod to rotate along the axis of the servo motor; one end of the short connecting rod is hinged with a hole on a cross beam of the machine body, and the other end of the short connecting rod is hinged with the middle part of the long connecting rod; one end of the long connecting rod is hinged with the sliding block, and the other end of the long connecting rod is hinged with the nut pin shaft; the long connecting rod and the short connecting rod form an ellipsograph mechanism. The transmission mechanism of the invention has no gear and eccentric structure, and the moment of inertia is small; the height of the press and the weight of the whole machine are reduced.
Description
Technical Field
The invention relates to a servo press transmission mechanism, and belongs to the technical field of mechanical engineering.
Background
The press is an indispensable device in the forging industry and is widely applied to the manufacturing industries of automobiles, electronics, furniture home appliances, hardware and the like. The traditional press is mainly a hydraulic press and a mechanical press, and the traditional press has poor process flexibility due to lower production efficiency of the traditional hydraulic press; therefore, the conventional press is gradually replaced with a servo mechanical press having higher production efficiency and process flexibility. Currently, the main transmission mechanism of the servo mechanical press mainly comprises a crank link mechanism, a crank toggle mechanism and a screw toggle mechanism. Although servo mechanical presses have the advantages of high production efficiency and high process flexibility compared with traditional presses, the main transmission mechanism still has the following disadvantages: 1) The main transmission mechanism needs to use gears and eccentric structures with larger sizes, which leads to larger moment of inertia of the whole transmission mechanism; 2) The main drive requires a larger size of the airframe structure for support, which results in a higher, heavier airframe structure for the press.
Disclosure of Invention
The invention aims to solve the technical problem of providing a main transmission mechanism of a servo press with a compact structure aiming at the defects existing in the prior art.
In order to solve the technical problem, the invention provides a servo press main transmission mechanism of a lead screw ellipsograph mechanism, which comprises a machine body, a sliding block guide rail, a servo motor, a lead screw, a screw nut pin shaft, a long connecting rod and a short connecting rod, wherein the sliding block guide rail is fixedly arranged on the machine body, and the guide surface of the sliding block guide rail is vertical to the plane of a workbench of the machine body; two ends of the upper plane of the sliding block are provided with hinging seats and are arranged in the middle of the machine body, a guide surface on the sliding block is attached to a guide surface on a sliding block guide rail, and the sliding block can slide up and down along the sliding block guide rail; the screw rod is arranged in the middle of the cross beam of the machine body, and the axis of the screw rod is vertical to the front-back direction of the machine body and is parallel to the workbench of the machine body; the nut is embedded in the nut pin shaft and is arranged on the screw rod, and the nut and the screw rod form a screw thread pair mechanism; the servo motor is fixed on the machine body, and a rotor of the servo motor is connected with the shaft end of the lead screw and drives the lead screw to rotate along the axis of the lead screw; two ends of the short connecting rod are provided with hinge holes, one end of the short connecting rod is hinged with a hole on a beam of the machine body through a fixed pin shaft, and the other end of the short connecting rod is hinged with a middle hinge hole of the long connecting rod through a joint pin shaft; the two ends and the middle part of the long connecting rod are provided with hinge holes, one end of the long connecting rod is hinged with the sliding block through a sliding block pin shaft and a hinge seat, the other end of the long connecting rod is hinged with a nut pin shaft, and the nut pin shaft is arranged on the screw rod along with the nut; the elliptic trammel mechanism is formed by the long connecting rod and the short connecting rod, the servo motor drives the screw rod to rotate, and the screw pair mechanism formed by the screw rod and the screw nut drives the upper end of the long connecting rod to move along the axis direction of the screw rod through the screw nut pin shaft, so that the slide block of the press is driven to move up and down to realize the stamping function of the press.
The adjacent hole distances of the three hinge holes on the long connecting rod are equal; the pitch of the two hinge holes on the short connecting rod is equal to the pitch of the adjacent holes of the long connecting rod.
The nut pin shaft is a cylindrical pin shaft, a shaft hole is formed in the radial direction of the cylindrical surface, and the nut is arranged in the shaft hole.
The beneficial effects are that: compared with the prior art, the transmission mechanism has no gear and eccentric structure, and only has parts with smaller mass such as a lead screw, a connecting rod and the like, so the rotational inertia of the whole transmission mechanism is smaller; meanwhile, the set of transmission mechanism does not need a larger machine body structure to support, so that the height of the press machine body and the weight of the whole machine are reduced, and the problems in the prior art are solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is a schematic view of the installation of the lead screw and the long/short links of the present invention;
FIG. 4 is a schematic view of the structure of the long connecting rod of the present invention;
FIG. 5 is a schematic view of the slider of the present invention in a top dead center position;
FIG. 6 is a schematic view of the slider of the present invention in a bottom dead center position.
In the figure: 1 machine body, 2 slide blocks, 3 slide block guide rails, 4 servo motors, 5 lead screws, 6 nuts, 7 nut pin shafts, 8 long connecting rods, 9 joint pin shafts, 10 slide block pin shafts, 11 short connecting rods and 12 fixed pin shafts.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Fig. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic view of a partial structure of the present invention.
The invention provides a servo press main transmission mechanism of a screw ellipsograph mechanism, which comprises a machine body 1, a sliding block 2, a sliding block guide rail 3, a servo motor 4, a screw 5, a screw 6, a screw pin shaft 7, a long connecting rod 8 and a short connecting rod 11.
The sliding block guide rail 3 is fixedly arranged on the machine body 1, and the guide surface of the sliding block guide rail 3 is perpendicular to the working table plane of the machine body 1.
Hinge seats are arranged at two ends of the upper plane of the sliding block 2, pin holes are arranged on the hinge seats, and the axes of the pin holes and the axis of the fixed pin shaft 12 are parallel and in the same vertical plane.
The sliding block 2 is arranged at the middle position of the machine body 1, a guide surface on the sliding block 2 is attached to a guide surface on the sliding block guide rail 3, and the sliding block 2 can only slide up and down along the sliding block guide rail 3 (namely, the direction perpendicular to the plane of the workbench of the machine body 1).
The screw rod 5 is arranged at the middle position of the cross beam of the machine body 1, the axis of the screw rod 5 is vertical to the front-back direction of the machine body 1 and is parallel to the workbench of the machine body 1, and after the screw rod 5 is arranged, the screw rod 5 can only rotate along the axis of the screw rod.
The nut 6 is embedded in the nut pin shaft 7 and is arranged on the screw rod 5, and the nut 6 and the screw rod 5 form a screw pair mechanism.
The nut pin shaft 7 is a cylindrical pin shaft, a shaft hole is formed in the radial direction of the cylindrical surface, the axis of the nut pin shaft 7 and the axis of the shaft hole are coplanar and perpendicular, and the nut 6 is installed in the shaft hole.
The servo motor 4 is fixed on the machine body 1, a rotor of the servo motor is connected with the shaft end of the screw rod 5, and the axis of the rotor of the servo motor 4 is coincident with the axis of the screw rod 5 and drives the screw rod 5 to rotate along the axis.
Fig. 3 is a schematic view showing the installation of the screw and the long/short link rod of the present invention.
The two ends of the short connecting rod 11 are provided with hinge holes, one end of the short connecting rod is hinged with the fixed pin shaft 12, and the other end of the short connecting rod is hinged with the middle hinge hole of the long connecting rod 8 through the joint pin shaft 9.
The fixed pin 12 is arranged in a hole on the cross beam of the machine body 1, and the axis of the fixed pin is perpendicular to and coplanar with the axis of the screw 5.
The short connecting rod 11 is provided with two hinge holes, the axes of the two shaft holes are parallel, and the hole pitch of the hinge holes is equal to the adjacent hole pitch of the long connecting rod 8.
The two ends and the middle part of the long connecting rod 8 are provided with hinge holes (shown in figure 4), one end of the long connecting rod is hinged with the sliding block 2 through a sliding block pin shaft 10 and a hinge seat, the other end of the long connecting rod is hinged with a nut pin shaft 7, the nut pin shaft 7 is arranged on the screw rod 5 along with the nut 6, and the coincidence of the axis of the screw rod 5 and the axis of the nut 6 and the axis of the shaft hole on the nut pin shaft 7 is ensured.
The long connecting rod 8 is provided with three hinge holes, the axes of the three holes are parallel and coplanar, and the adjacent hole distances are equal.
FIG. 5 is a schematic view of the slider of the present invention in a top dead center position.
FIG. 6 is a schematic view of the slider of the present invention in a bottom dead center position.
The long connecting rod 8 and the short connecting rod 11 form an ellipsograph mechanism, and when the sliding block moves up and down, the center of the shaft hole at the upper end of the long connecting rod 8 only moves along the axis of the screw rod 5; in the opposite case, when the servo motor 4 drives the screw rod 5 to rotate, the screw pair mechanism formed by the screw rod 5 and the screw nut 6 pushes the upper end of the long connecting rod 8 to move along the axis direction of the screw rod 5 through the screw nut pin shaft 7, so that the slide block 2 of the press is driven to move up and down to realize the stamping function of the press.
Compared with the prior art, the transmission mechanism has no gear and eccentric structure, and only has parts with smaller mass such as a lead screw, a connecting rod and the like, so the rotational inertia of the whole transmission mechanism is smaller; meanwhile, the set of transmission mechanism does not need a larger machine body structure to support, so that the height of the press machine body and the weight of the whole machine are reduced, and the problems in the prior art are solved.
The above-described embodiments of the invention are intended to be examples only, and not to be limiting, and all changes that come within the scope of the invention or equivalents thereto are intended to be embraced thereby.
Claims (1)
1. A servo press main transmission mechanism of a lead screw ellipsograph mechanism is characterized in that: the device comprises a machine body (1), a sliding block (2), a sliding block guide rail (3), a servo motor (4), a screw rod (5), a screw nut (6), a screw nut pin shaft (7), a long connecting rod (8) and a short connecting rod (11), wherein the sliding block guide rail (3) is fixedly arranged on the machine body (1), and a guide surface of the sliding block guide rail (3) is perpendicular to a working table plane of the machine body (1); two ends of the upper plane of the sliding block (2) are provided with hinging seats and are arranged in the middle of the machine body (1), a guide surface on the sliding block (2) is attached to a guide surface on the sliding block guide rail (3), and the sliding block (2) can slide up and down along the sliding block guide rail (3); the screw rod (5) is arranged at the middle position of the cross beam of the machine body (1), and the axis of the screw rod (5) is vertical to the front-back direction of the machine body (1) and parallel to the workbench of the machine body (1); the screw nut (6) is embedded in the screw nut pin shaft (7) and is arranged on the screw rod (5), and the screw nut (6) and the screw rod (5) form a screw thread pair mechanism; the servo motor (4) is fixed on the machine body (1), and a rotor of the servo motor is connected with the shaft end of the screw rod (5) and drives the screw rod (5) to rotate along the axis of the screw rod; two ends of the short connecting rod (11) are provided with hinge holes, one end of the short connecting rod is hinged with a hole on a cross beam of the machine body (1) through a fixed pin shaft (12), and the other end of the short connecting rod is hinged with a middle hinge hole of the long connecting rod (8) through a joint pin shaft (9); the two ends and the middle part of the long connecting rod (8) are provided with hinge holes, one end of the long connecting rod is hinged with the sliding block (2) through a sliding block pin shaft (10) and a hinge seat, the other end of the long connecting rod is hinged with a nut pin shaft (7), and the nut pin shaft (7) is arranged on the screw rod (5) along with the nut (6); the long connecting rod (8) and the short connecting rod (11) form an ellipsograph mechanism, the servo motor (4) drives the screw rod (5) to rotate, and the screw pair mechanism formed by the screw rod (5) and the screw nut (6) drives the upper end of the long connecting rod (8) to move along the axis direction of the screw rod (5) through the screw nut pin shaft (7), so that the sliding block (2) of the press is driven to move up and down to realize the stamping function of the press; the adjacent hole distances of the three hinge holes on the long connecting rod (8) are equal; the hole distance of two hinge holes on the short connecting rod (11) is equal to the adjacent hole distance of the long connecting rod (8); the nut pin shaft (7) is a cylindrical pin shaft, a shaft hole is formed in the radial direction of the cylindrical surface, and the nut (6) is installed in the shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566506.3A CN109500337B (en) | 2018-12-19 | 2018-12-19 | Servo press main transmission mechanism of lead screw ellipsograph mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811566506.3A CN109500337B (en) | 2018-12-19 | 2018-12-19 | Servo press main transmission mechanism of lead screw ellipsograph mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109500337A CN109500337A (en) | 2019-03-22 |
| CN109500337B true CN109500337B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811566506.3A Active CN109500337B (en) | 2018-12-19 | 2018-12-19 | Servo press main transmission mechanism of lead screw ellipsograph mechanism |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1274930A (en) * | 1968-12-02 | 1972-05-17 | Sack Gmbh Maschf | Improvements in forging machines |
| GB1399327A (en) * | 1972-06-08 | 1975-07-02 | Osterwalder Ag | Presses |
| CN101301673A (en) * | 2008-06-05 | 2008-11-12 | 西安交通大学 | Mechanism from changing crank block into bar linkage without clutch and brake |
| CN101480692A (en) * | 2009-01-16 | 2009-07-15 | 南京理工大学 | servo- pressing machine |
| CN102172759A (en) * | 2010-01-07 | 2011-09-07 | 上海交通大学 | Mechanical multi-link servo press driven by six parallelly-connected motors |
| CN209303626U (en) * | 2018-12-19 | 2019-08-27 | 济南二机床集团有限公司 | A kind of servo-pressing machine main drive gear of lead screw ellipse gauge mechanism |
-
2018
- 2018-12-19 CN CN201811566506.3A patent/CN109500337B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1274930A (en) * | 1968-12-02 | 1972-05-17 | Sack Gmbh Maschf | Improvements in forging machines |
| GB1399327A (en) * | 1972-06-08 | 1975-07-02 | Osterwalder Ag | Presses |
| CN101301673A (en) * | 2008-06-05 | 2008-11-12 | 西安交通大学 | Mechanism from changing crank block into bar linkage without clutch and brake |
| CN101480692A (en) * | 2009-01-16 | 2009-07-15 | 南京理工大学 | servo- pressing machine |
| CN102172759A (en) * | 2010-01-07 | 2011-09-07 | 上海交通大学 | Mechanical multi-link servo press driven by six parallelly-connected motors |
| CN209303626U (en) * | 2018-12-19 | 2019-08-27 | 济南二机床集团有限公司 | A kind of servo-pressing machine main drive gear of lead screw ellipse gauge mechanism |
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| Publication number | Publication date |
|---|---|
| CN109500337A (en) | 2019-03-22 |
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