CN112519289A

CN112519289A - High-speed stamping press

Info

Publication number: CN112519289A
Application number: CN202011385599.7A
Authority: CN
Inventors: 王大元; 王加明
Original assignee: Ningbo Goanwin Machinery Technology Co ltd
Current assignee: Ningbo Goanwin Machinery Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-03-19

Abstract

The invention discloses a high-speed stamping press which comprises a crank set, a connecting rod set, a sliding block and a guide rail, wherein the crank set rotates and drives the connecting rod set to move so as to drive the sliding block to move along the guide rail, so that stamping action is realized; the method is characterized in that: the crank set comprises a driving crank and a driven crank, the driving crank is in transmission connection with the power input mechanism, a driving gear is mounted on the driving crank, a driven gear is mounted on the driven crank, the driving crank realizes power transmission to the driven crank through meshing transmission of the driving gear and the driven gear, two eccentric cranks are coaxially arranged on the driving crank and the driven crank respectively, a connecting rod is mounted on each eccentric crank, and the four connecting rods synchronously move under the driving of the crank set so as to drive the sliding block to move along the guide rail; through the transmission structure, the transmission stability and the unbalance loading resistance of the sliding block are improved, the stamping press is suitable for stamping operation of multi-station stamping and medium-thickness plates, the stamping speed and the production efficiency of the stamping press are improved, and noise is reduced.

Description

High-speed stamping press

Technical Field

The invention relates to the technical field of press machine structures, in particular to a high-speed stamping press machine which is provided with a plurality of cranks and a plurality of connecting rods for transmission so as to improve the transmission stability and the unbalance loading resistance of a sliding block.

Background

The stamping production occupies an important position in the mechanical industry, the materials such as steel and the like are forged into the required shape by utilizing strong stamping force, various properties of the materials are changed by the strong forging, the produced workpiece has the advantages of good quality, light weight, high production efficiency, low production cost and the like, and the stamping die is widely applied to the fields of automobiles, precision electronics and the like. In the prior art, a crank-slider mechanism is usually used as a working mechanism of a high-speed press to convert circular motion into linear motion, a main motor drives a flywheel to drive a gear, a crank and a connecting rod to rotate through a clutch so as to achieve the linear motion of a slider, a stamping die is placed on a stamping platform, and stamping operation is performed on a workpiece to be stamped through connecting the slider.

When the existing press with the crank-link mechanism structure is used for multi-station stamping operation or blanking of medium-thick plates, the problems of poor transmission stability, unbalance loading, high noise and the like generally exist, so that the production efficiency is limited, and the stamping speed cannot be further improved.

Disclosure of Invention

The invention aims to provide a high-speed stamping press which is simple and reasonable in structure, wide in slide block force application point, stable in transmission and strong in unbalance loading resistance, so as to overcome the defects of the prior art.

Aiming at the problems, the invention adopts a technical scheme that: there is provided a high speed stamping press comprising a crank set, a linkage, a slide and a guide, wherein,

the crank group rotates to drive the connecting rod group to synchronously act, and the connecting rod group further drives the sliding block to move along the guide rail to realize stamping;

the method is characterized in that: the crank set comprises: the driving crank is in transmission connection with the power input mechanism, a driving gear is mounted on a rotating shaft of the driving crank, a driven gear is mounted on a rotating shaft of the driven crank, and the driven gear is in meshing transmission with the driving gear or a driven gear on the other driven crank to realize the transmission of the rotary power from the driving crank to the driven crank; n is more than or equal to 1; m first eccentric crank throws are arranged on the driving crank, and M second eccentric crank throws are uniformly arranged on each driven crank;

the linkage includes: the first connecting rods and the second connecting rods are connected with the sliding block and synchronously act under the driving of the crank group to drive the sliding block to perform stamping operation, and M is more than or equal to 2.

Further, N is 1, M is 2;

the crank set comprises: the driving gear is meshed with the driven gear to realize the transmission of the rotary power of the driving crank to the driven crank; two first eccentric crank throws are arranged on the driving crank along the same axial direction, and two second eccentric crank throws are arranged on the driven crank along the same axial direction;

the linkage includes: two first connecting rods arranged on the first eccentric crank throw and two second connecting rods arranged on the second eccentric crank throw; the first connecting rod and the second connecting rod are both in transmission connection with the sliding block; the crank group rotates to drive the connecting rod group to synchronously act, and the connecting rod group further drives the sliding block to move along the guide rail to perform stamping action.

Through the arrangement, the double-crank and four-connecting-rod transmission structure effectively ensures the stability and the unbalance loading resistance of transmission, does not cause the structure to be too complex, and balances the performance and the processing cost.

Furthermore, helical tooth meshing transmission or herringbone tooth meshing transmission is arranged between the driving gear and the driven gear.

Through the arrangement, compared with the conventional straight tooth meshing transmission, the helical tooth or herringbone tooth meshing transmission can effectively reduce the transmission noise while ensuring the transmission stability.

Furthermore, a first slider shaft and a second slider shaft are arranged on the slider in a penetrating mode in parallel, the two ends of the first slider shaft and the two ends of the second slider shaft extend out of the slider respectively, the first connecting rod is installed at the two ends of the first slider shaft in a hinged mode, and the second connecting rod is installed at the two ends of the second slider shaft in a hinged mode.

Through the arrangement, the transmission stability between the connecting rod and the sliding block can be effectively improved, and the unbalance loading resistance of the sliding block is improved.

Further, the power input mechanism comprises a constant speed motor, and the constant speed motor transmits rotary power to the driving crank through belt transmission.

Furthermore, the connecting rod group is formed by stacking four stamping blanks and stamping at one time on one station.

Through the arrangement, the four connecting rods are simultaneously formed by stamping on one station, the coaxiality and the size precision of the connecting rods can be greatly improved, and the motion synchronism of the connecting rods is ensured.

Furthermore, the a tooth surface precision grades of the driving gear and the driven gear are both 5GJGB10095-88, the tooth form errors are both less than or equal to 0.02mm, and the tooth surface clearance when the driving gear and the driven gear are meshed is 0.08-0.13 mm.

Through the arrangement, the precision error of gear meshing transmission is controlled, the transmission stability can be ensured, and the transmission noise is further reduced.

Furthermore, the crank set is mounted on the frame through a first bearing, a copper sleeve is arranged between the first bearing and the crank set, and a second bearing is arranged between the first slider shaft and the connecting rod set; and the comprehensive clearance is less than or equal to 0.4, wherein the comprehensive clearance is obtained by accumulating the fit clearance between the crank set and the first bearing, the fit clearance between the crank set and the copper sleeve and the fit clearance between the connecting rod set and the second bearing.

Furthermore, the driving crank and the driven crank are arranged on the same plane parallel to the working table surface; the working table surface is a stamping plane.

Furthermore, the planeness of the bottom surface of the sliding block is less than or equal to 0.0048/100, the parallelism of the bottom surface of the sliding block and the working table surface is less than or equal to 0.013/100, and the perpendicularity of the stamping motion direction of the sliding block and the working table surface is less than or equal to 0.03/100.

And the transmission stability is ensured by controlling the comprehensive clearance and the precision of the sliding block.

The invention has the beneficial effects that: 1. the crankshaft groups are in meshing transmission connection through gears, and the gears adopt helical teeth or herringbone teeth structures, so that the transmission stability is ensured in high-speed operation, and the transmission noise is reduced; 2. the multi-crank and multi-connecting rod are adopted to synchronously drive the sliding block to perform stamping operation, so that the anti-unbalance loading capacity of the sliding block is greatly increased while the sliding block is ensured to stably act, and the stamping stability is improved; 3. the whole structure is simple and reasonable, and the multi-station stamping machine is suitable for stamping operation of multi-station stamping or medium-thickness plates.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a top view of FIG. 1;

FIG. 4 is a cross-sectional view taken along plane D-D of FIG. 2;

FIG. 5 is a cross-sectional view taken along plane G-G of FIG. 3;

FIG. 6 is a cross-sectional view taken along the plane I-I in FIG. 5;

FIG. 7 is a schematic structural diagram of a transmission assembly in an embodiment of the present invention;

description of reference numerals:

1. the constant-speed motor comprises a constant-speed motor, 2, a driving belt pulley, 3, a driven belt pulley, 4, a long crankshaft, 5, a short crankshaft, 6, a driving gear, 7, a driven gear, 8a, a first connecting rod, 8b, a second connecting rod, 8c, a third connecting rod, 8d, a fourth connecting rod, 9, a sliding block, 10, a first sliding block shaft, 11, a second sliding block shaft, 12, a base, 13, a guide rail, 13a, a front machine body, 13b and a rear machine body.

Detailed Description

The technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings so that the advantages and features of the present invention may be more readily understood by those skilled in the art, and thus the scope of the present invention may be more clearly and clearly defined.

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment of the invention relates to a high-speed stamping press which is suitable for multi-station stamping or medium-thickness plate stamping operation and aims to improve transmission stability and unbalance load resistance.

Referring to fig. 1 to 7, a high speed stamping press according to an embodiment of the present invention includes: the device comprises a base 12, a machine body, a constant-speed motor 1 and a transmission assembly; the transmission assembly includes: the fixed-speed motor 1 is connected with the crank set through a belt transmission assembly to achieve power input, the crank set rotates to drive the connecting rod set to synchronously act, and the connecting rod set further drives the sliding block 9 to reciprocate up and down along the guide rail 13 to achieve stamping operation.

The crank set specifically includes: the belt transmission component comprises a driving belt pulley 4 connected with a power output shaft of the constant-speed motor 1 and a driven belt pulley 3 arranged on the long crank 4, the driving belt pulley 4 drives the driven belt pulley 3 to move through the belt component, and the transmission of the rotary power from the constant-speed motor 1 to the long crank 4 is realized; the middle part of the long crank 4 is provided with a driving gear 6, the middle part of the short crank 5 is provided with a driven gear 7, and the power transmission from the long crank 4 to the short crank 5 is realized through the meshing transmission of the driving gear 6 and the driven gear 7; two first eccentric crank throws are symmetrically arranged on the long crank 4 along the same axial direction, and two second eccentric crank throws are symmetrically arranged on the short crank 5 along the same axial direction.

The linkage specifically includes: a first connecting rod 8a and a second connecting rod 8b which are arranged on the first eccentric crank throw, and a third connecting rod 8c and a fourth connecting rod 8d which are arranged on the second eccentric crank throw; when the crank group moves, the four connecting rods are driven to synchronously move, and the four connecting rods are connected with the sliding block 9 through the sliding block shaft, so that the sliding block 9 is driven to realize stamping movement along the guide rail 13.

The slider shaft is including parallel first slider shaft 10 and the second slider shaft 11 of wearing to locate in the slider 9, and the outside of slider 9 is all extended at the both ends of first slider shaft 10 and second slider shaft 11, and articulated the installing in the both ends of first slider shaft 10 of connecting rod 8a and connecting rod two 8b through bearing 14, and articulated the installing in the both ends of second slider shaft 11 of connecting rod three 8c and connecting rod four 8d through the bearing, realizes through above-mentioned structure that the transmission of connecting rod group and slider 9 is connected.

According to the embodiment of the invention, the slide block 9 keeps stable transmission in the transmission process through the transmission structure with the double cranks and the four connecting rods, and the unbalance loading resistance of the slide block 9 is greatly improved.

The driving gear 6 and the driven gear 7 both adopt helical tooth structures, and transmission noise is effectively reduced in high-speed motion.

The machine body comprises a front machine body 13a and a rear machine body 13b, the long crank 4 and the short crank 5 are supported and mounted on the upper part of the machine body through self-aligning roller bearings, and a guide rail 13 of the sliding block 9 is formed among the lower part of the machine body, the front machine body 13a and the rear machine body 13 b.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A high-speed stamping press comprises a crank set, a connecting rod set, a slide block and a guide rail, wherein,

2. A high speed stamping press as claimed in claim 1, wherein N-1, M-2;

the linkage includes: two first connecting rods arranged on the first eccentric crank throw and two second connecting rods arranged on the second eccentric crank throw; the first connecting rod and the second connecting rod are both in transmission connection with the sliding block; the crank group rotates to drive the connecting rod group to realize synchronous motion, and the connecting rod group further drives the sliding block to move along the guide rail.

3. A high speed stamping press according to claim 1 or 2, wherein a helical gearing or herringbone gearing is provided between the drive gear and the driven gear.

4. The high-speed stamping press according to claim 2, wherein a first slide block shaft and a second slide block shaft are arranged on the slide block in a penetrating manner in parallel, two ends of the first slide block shaft and the second slide block shaft respectively extend out of the slide block, the first connecting rod is hinged to two ends of the first slide block shaft, and the second connecting rod is hinged to two ends of the second slide block shaft.

5. A high speed stamping press according to claim 1 or 2, wherein the power input mechanism comprises a fixed speed motor which transmits rotational power to the drive crank via a belt drive.

6. A high speed stamping press as claimed in claim 2, wherein the linkage is formed by stacking four stamped blanks and stamping them at one time in one station.

7. The high-speed stamping press according to claim 1 or 2, wherein the a tooth surface precision grades of the driving gear and the driven gear are both 5GJGB10095-88, the tooth form errors are both less than or equal to 0.02mm, and the tooth surface clearance when the driving gear and the driven gear are meshed is 0.08-0.13 mm.

8. The high-speed stamping press according to claim 4, wherein the crank set is rotatably mounted on the frame by a first bearing, a copper bush is arranged between the first bearing and the crank set, and a second bearing is arranged between the first slider shaft, the second slider shaft and the connecting rod set; and the comprehensive clearance is less than or equal to 0.4, wherein the comprehensive clearance is obtained by accumulating the fit clearance between the crank set and the first bearing, the fit clearance between the crank set and the copper sleeve and the fit clearance between the connecting rod set and the second bearing.

9. A high speed stamping press according to claim 1 or 2, wherein the drive crank and the driven crank are mounted on the same plane parallel to the table top.

10. The high-speed stamping press according to claim 9, wherein the flatness of the bottom surface of the slide block is less than or equal to 0.0048/100, the parallelism of the bottom surface of the slide block and the working table surface is less than or equal to 0.013/100, and the perpendicularity of the stamping motion direction of the slide block and the working table surface is less than or equal to 0.03/100.