CN110539036A - Cam high-speed impact type metal bar pipe material low-stress impact rotary bending cracking blanking device - Google Patents
Cam high-speed impact type metal bar pipe material low-stress impact rotary bending cracking blanking device Download PDFInfo
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- CN110539036A CN110539036A CN201910861727.1A CN201910861727A CN110539036A CN 110539036 A CN110539036 A CN 110539036A CN 201910861727 A CN201910861727 A CN 201910861727A CN 110539036 A CN110539036 A CN 110539036A
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- cam
- belt wheel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
Abstract
The invention relates to a cam high-speed impact type metal bar and pipe material low-stress impact rotary bending cracking blanking device which comprises a motor transmission mechanism, a bar and pipe material fixing device and a transverse impact blanking mechanism, wherein the motor transmission mechanism is connected with a rotating cam at the tail end, the bar and pipe material fixing device can be carried and matched with a sleeve to rotate along the longitudinal direction through the sleeve, and the transverse impact blanking mechanism can perform intermittent alternate impact on the sleeve in the bar and pipe material fixing device under the rotating action of the cam of the transmission mechanism. According to the invention, the metal bar and pipe clamped by the cantilever is subjected to low-cycle impact blanking by adopting a mode of combining an impact load effect and a preformed notch stress concentration effect of the bar and pipe to be processed, so that good quality of a blank section can be obtained, and the method has the advantages of high production efficiency, high material utilization rate and the like.
Description
Technical Field
The invention belongs to the technical field of green near-net forming of metal, and particularly relates to a cam high-speed impact type metal bar and pipe material low-stress impact rotary bending cracking blanking device for cutting off and processing metal bar and pipe materials.
Background
Metal bar and tube materials are widely used in many mechanical parts, such as various cold and hot extrusion and die forging parts, metal chains, bearings, and various shaft parts, but most of the parts related to shafts are processed by blanking. As a most basic process, the blanking process of the rod and tube materials is widely applied and is the first process for manufacturing common mechanical parts, and the blanking quality has great influence on the processing quality, the production efficiency, the product effect, the production cost and the like of subsequent products.
At present, the traditional blanking methods such as lathe cutting, sawing, punching shearing and the like are generally adopted for blanking metal rod and tube materials in industrial production, and particularly the first two blanking methods are more adopted. Although the lathe cutting and sawing blanking methods can obtain a flat section to a certain extent, the two methods have low production efficiency due to the fact that the metal materials are different and the limitation of the feeding amount of a cutter is considered; meanwhile, the rigidity and the strength of the processing tool are considered, and the turning cutter and the saw blade have certain thicknesses, so that material waste is caused in the material separating process, and the material utilization rate is low. The common punching machine shearing blanking method also has the problems of poor quality of the obtained section, easy occurrence of a 'horseshoe-shaped' section and the like in the actual industrial production. Generally speaking, in the prior art, the problems of flatness but not fast (such as sawing, cutting by a turning tool and a disc cutter) and flatness and roundness (such as shearing by a common punch) exist in the traditional blanking method in the aspect of metal rod and tube materials in different degrees, so that the blanking load is large, the energy consumption is high, the material utilization rate is low, the production efficiency is low, and various pollutions are serious, such as cutter cooling liquid pollution, waste material pollution, noise pollution and the like.
In recent years, some high-speed shearing equipment is also developed in the field successively, and although the used high-speed shearing method is greatly improved in the aspects of section quality, blank geometric accuracy, material utilization rate, production efficiency and the like compared with the traditional blanking method, the high-speed shearing blanking is brought into a high-speed state, common equipment cannot meet the requirements easily, and special high-speed equipment is required. At present, most of domestic high-speed shearing blanking equipment applied in a large range is imported, the price is high, the later equipment is inconvenient to maintain, and the domestic hydraulic high-speed shearing equipment is limited by high-frequency switching of a hydraulic valve, so that the production efficiency is low, and most of the domestic hydraulic high-speed shearing equipment is still in a laboratory research stage or a small-batch trial state.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides the cam high-speed impact type metal bar and pipe material low-stress impact spin bending cracking blanking device which is simple in structure, convenient to operate, capable of obtaining good bar and pipe material section quality, and has the advantages of high production efficiency, high material utilization rate and the like.
the technical solution adopted to achieve the above-mentioned object of the invention is as follows: the high-speed impacted style metal bar tubular product low stress impact of cam that provides strikes turns curved to send and splits unloader includes that a terminal connects to be equipped with the motor drive mechanism who rotates the cam, an accessible sleeve carries cooperation bar tubular product along longitudinal rotation's bar tubular product fixing device and one can be under drive mechanism cam rotation effect to the sleeve in the bar tubular product fixing device do the horizontal impact unloading mechanism that intermittent type nature was strikeed in turn, wherein:
The transmission mechanism consists of a first alternating current servo motor, a first driving belt wheel, a first driven belt wheel and a cam, wherein the first alternating current servo motor drives the first driving belt wheel to rotate;
The bar and pipe material fixing device is arranged in front of the transmission mechanism and consists of a second alternating current servo motor, a second driving belt wheel, a second driven belt wheel, a revolving body and a sleeve, the second alternating current servo motor drives the second driving belt wheel to rotate, the second driving belt wheel is in transmission connection with the second driven belt wheel through a second transmission belt, the revolving body is in coaxial connection with the second driven belt wheel, a three-jaw chuck for clamping bar and pipe materials is assembled at one end of the revolving body, and the sleeve for clamping the bar and pipe material blanking section to enter is assembled outside the three-jaw chuck through a sleeve supporting piece;
The transverse impact blanking mechanism is positioned between the transmission mechanism and the bar and pipe material fixing device and consists of an impact component movement chamber, a cylindrical guide rail, a compression spring and a punch head component, wherein the impact component movement chamber is a rectangular concave cavity component which is formed by enclosing a base plate, high baffles at the left side and the right side and low baffles at the front side and the rear side, the inner surfaces of the high baffles at the left side and the right side are respectively provided with a transverse dovetail groove, two ends of the cylindrical guide rail are arranged on the low baffles at the front side and the rear side, the compression spring is sleeved on the cylindrical guide rail, the punch head component is a T-shaped column rod component with an expanded bedplate at the rear end, the lower part of the expanded bedplate at the rear end is provided with a cylindrical guide rail sleeve hole for penetrating the cylindrical guide rail and pressing the compression spring, the left side and the right side of the expanded bedplate are provided with slide blocks which can respectively move in the transverse dovetail grooves of the high, after the transmission mechanism works, the expanding bedplate at the rear end of the punch assembly is subjected to the swing action of the cam, can intermittently push the compression spring to move forward and enable the plunger to extend out of the upper part of the low baffle at the front side of the movement cavity in a reciprocating manner, and repeatedly impacts a sleeve carrying a blanking section of the metal bar pipe material, so that a stress concentration part (an annular V-shaped groove prefabricated on the surface of the metal bar pipe material) on the metal bar pipe material is subjected to rotary bending crack and continuous expansion, a section is finally formed, and the blanking separation of the metal bar pipe material is completed.
The further technical solution of the invention also lies in: two parallel deep groove ball bearings are tightly matched in a sleeve of the bar and pipe material fixing device, and the axial movement of the deep groove ball bearings is limited by two C-shaped snap springs respectively.
The further technical solution of the invention also lies in: a rod and pipe material supporting cylinder is arranged between a second driven belt wheel and a revolving body of the rod and pipe material fixing device, a rolling bearing is assembled in the rod and pipe material supporting cylinder, and the axial movement of the rolling bearing is limited by a third C-shaped clamp spring.
the further technical solution of the invention also lies in: two ports of a sleeve of the rod and pipe material fixing device are designed to be conical ports.
The further technical solution of the invention also lies in: a soft recoverable polyurethane sleeve is tightly fitted between the sleeve supporting piece and the sleeve of the bar and tube material fixing device.
The working process of the invention is as follows: after a first alternating current servo motor in the transmission mechanism is started, power is transmitted to the cam through a first driving belt wheel and a first driven belt wheel in sequence to enable the cam to rotate; the punch assembly in the impact blanking mechanism performs transverse linear impact motion forwards after receiving impact force from the cam, and then the impact rod pipe material fixing device is matched with a sleeve of a metal rod pipe material; after a second alternating current servo motor in the rod and pipe material fixing device is started, power is transmitted to the revolving body through a second driving belt wheel and a second driven belt wheel in sequence, and then the metal rod and pipe material is driven to rotate through the three-jaw chuck, so that the metal rod and pipe material assembled in the sleeve can bear loads at different angles and in different directions; during work, the second alternating current servo motor can change the rotating speed of the metal rod pipe material by adjusting the rotating speed, so that the position and the frequency of the metal rod pipe material for bearing impact are changed, and finally, the blanking separation of the metal rod pipe material is completed.
compared with the prior art, the device of the invention makes the cam mechanism and the blanking machine into a system, and simultaneously, the blanking machine is provided with the compression spring, and the problem of repeatable loading of impact is solved by utilizing the back-pushing action of the compression spring; in addition, the two ends of the sleeve for matching the metal rod and the pipe adopt the design of the conical openings, and the metal rod and the pipe cannot be accurately matched with the sleeve opening because the sleeve cannot be accurately reset after being impacted to generate displacement, so that the entry of unprocessed rod and pipe can be more convenient by adopting the design of the conical openings, and the metal rod and pipe after blanking can be conveniently withdrawn; a first alternating current servo motor in the transmission mechanism can change the rotating speed of the cam by adjusting the rotating speed, so that the hitting force and the hitting frequency of the cam on a punch head component in the punching blanking mechanism are changed; the second alternating current servo motor in the rod and tube fixing device can change the rotating speed of the rod and tube by adjusting the rotating speed, so as to change the position and frequency of the rod and tube for bearing impact; the three-jaw chuck in the rod and pipe material fixing device drives the metal rod and pipe material to rotate, so that the metal rod and pipe material can bear loads in different angles and directions, and the metal rod and pipe material can be promoted to rapidly initiate microcracks at stress concentration positions (at the annular V-shaped groove prefabricated on the surface of the metal rod and pipe material) and accelerate crack expansion, so that the metal rod and pipe material can be rapidly fractured in a short time, blanking is completed, and a smooth rod and pipe material section can be obtained.
In conclusion, the method has the advantages that the method combines the impact load effect with the preformed notch stress concentration effect of the rod and pipe materials to be processed, low-cycle impact blanking is carried out on the metal rod and pipe materials clamped by the cantilever, good quality of the section of the blank can be obtained, and the method has the advantages of high production efficiency, high material utilization rate and the like.
Drawings
FIG. 1 is a three-dimensional isometric view of an apparatus according to an embodiment of the present invention.
Fig. 2 is a front view of the device of the embodiment shown in fig. 1.
fig. 3 is a top view of the embodiment of the device shown in fig. 1.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
Fig. 5 is a sectional view taken along line B-B of fig. 3.
Figure 6 is a cross-sectional view taken along line C-C of figure 3, the punch assembly being in a non-impacting state.
Figure 7 is a schematic view of the punch assembly of the present invention in an impact condition.
The names of the numerical labels in the figures are respectively: 1-a first ac servomotor, 2-a first motor base, 3-a first drive pulley, 4-a drive shaft base, 5-a first drive belt, 6-a first driven pulley, 7-a drive shaft, 8-a cam, 9-a table, 10-a rear low baffle, 11-a base plate, 12-a left high baffle, 13-a front low baffle, 14-a right high baffle, 15-a compression spring, 16-a cylindrical guide rail, 17-a punch assembly, 18-a sleeve support, 19-a sleeve, 20-a C-type snap spring, 21-a deep groove ball bearing, 22-a C-type snap spring, 23-a deep groove ball bearing, 24-a polyurethane sleeve, 25-a metal rod material, 26-a third C-type snap spring, 27-a rolling bearing, 28-a rod material support cylinder, 29-a three-jaw chuck, 30-a rotation body, 31-a second driven pulley, 32-a second drive belt, 33-a second drive pulley, 34-a second motor base, 35-second ac servomotor.
Detailed Description
The technical solutions in the embodiments of the present invention will be further described below with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings, the cam high-speed impact type metal bar and pipe material low-stress impact rotary bending cracking blanking device provided by the invention comprises a motor transmission mechanism, a bar and pipe material fixing device and a transverse impact blanking mechanism.
The motor transmission mechanism comprises a first alternating current servo motor 1, a first driving belt wheel 3, a first driven belt wheel 6, a first transmission belt 5, a transmission shaft 7, a cam 8 and the like. A first driving belt wheel 3 is arranged on a shaft of the first alternating current servo motor 1, the first alternating current servo motor 1 drives the first driving belt wheel 3 to rotate, a first driven belt wheel 6 is arranged right above the first driving belt wheel 3, a transmission shaft 7 is arranged along the same horizontal direction, and a cam 8 is arranged at the other end of the transmission shaft 7. The driving belt 5 connects the first driving pulley 3 and the first driven pulley 6, and drives the first driven pulley 6 and the transmission shaft 7 to rotate, thereby driving the cam 8 to rotate. The cam 8 can perform alternate impact on the tail part of the punch assembly 17 in the transverse impact blanking mechanism in the rotating process.
The bar and pipe fixing device is arranged in front of the motor transmission mechanism and comprises a second alternating current servo motor 35, a second driving belt wheel 33, a second driven belt wheel 31, a second transmission belt 32, a bar and pipe supporting cylinder 28, a revolving body 30, a three-jaw chuck 29, a sleeve supporting part 18, a sleeve 19 and the like. A second driving pulley 33 is attached to a shaft of the second ac servomotor 35, and the second driving pulley 33 and the second driven pulley 31 are connected together by a second transmission belt 32. The second driven belt wheel 31 is tightly matched with the revolving body 30, the rod and tube material supporting cylinder 28 is arranged between the second driven belt wheel 31 and the revolving body 30, the rolling bearing 27 is tightly matched in the rod and tube material supporting cylinder 28, and the third C-shaped clamp spring 26 is matched in the coaxial direction of the rolling bearing 27 so as to ensure that the axial direction of the rolling bearing 27 does not displace. The other end of the revolving body 30 is tightly matched with a three-jaw chuck 29, the front section of the metal bar and pipe material 25 with the V-shaped groove on the surface is inserted into the three-jaw chuck 29 and clamped tightly after passing through the bar and pipe material supporting cylinder 28 and the revolving body 30, so that the three-jaw chuck 29 drives the clamped metal bar and pipe material 25 to rotate together, the front section of the metal bar and pipe material 25 is matched and extends into a sleeve 19 with a conical opening, two parallel deep groove ball bearings 21 and 23 are tightly matched in the sleeve 19, and the two C-shaped snap springs 20 and 22 are used for respectively limiting the deep groove ball bearings 21 and 23 so as to ensure that the axial directions of the two rolling bearings 21 and 23 do not displace. A sleeve support 18 is provided outside the sleeve 19, and a soft, recoverable polyurethane sleeve 24 is fitted tightly between the sleeve 19 and the sleeve support 18. During blanking, the sleeve 19 is subjected to the radial load transmitted from the punch assembly 17 and transmits the load to the metal bar and tube material 25, thereby completing blanking.
The transverse impact blanking mechanism is positioned between the transmission mechanism and the rod and tube material fixing device and comprises an impact assembly moving chamber, a cylindrical guide rail 16, a compression spring 15, a punch assembly 17 and the like. The impact component movement chamber is a rectangular cavity component which is enclosed by a base plate 11, high baffles 12 and 14 at the left side and the right side and low baffles 13 and 10 at the front side and the rear side, the inner surfaces of the high baffles 12 and 14 at the left side and the right side are respectively provided with a transverse dovetail groove, two ends of a cylindrical guide rail 16 are arranged on the low baffles 13 and 10 at the front side and the rear side, a compression spring 15 is sleeved on the cylindrical guide rail 16, a punch component (17) is a T-shaped column rod component with an expanded bedplate at the rear end, a cylindrical guide rail sleeve hole for penetrating and sleeving the cylindrical guide rail 16 and jacking the compression spring 15 is arranged at the lower part of the expanded bedplate at the rear end, sliders which can respectively move in the transverse dovetail grooves of the high baffles 12 and 14 at the left side and the right side are arranged at the left side and the right side of the expanded bedplate, so as to ensure the linear reciprocating motion track of the punch component 17, a column rod punch of the punch, after the expanded platen at the rear end of the punch assembly 17 is impacted by the cam 8, the expanded platen moves forwards in a linear impact manner to apply a transverse load to the sleeve 19, the punch assembly 17 is reset through the pushing back action of the compression spring 15, the reciprocating motion of the punch assembly 17 can be realized by repeating the process, and the blanking of the metal bar and tube material 25 is completed.
In the practical work of the invention, the punch assembly 17 does linear impact motion forwards after receiving the impact force from the cam 8 so as to impact the sleeve 19 matched with the metal rod and pipe material 25, the compression spring 15 generates a thrust force by receiving external load pressure so as to reset the punch assembly 17, the linear reciprocating motion of the punch assembly 17 can be realized by repeating the process, and the problem of repeatable loading of impact is solved. In the specific structural design of the invention, the two ends of the sleeve 19 matched with the metal rod and tube material 25 are designed to be conical openings, and the sleeve 19 cannot be accurately reset after being impacted to generate displacement, so that the position of the rod and tube material 25 cannot be accurately matched with the opening of the sleeve 19, and the conical opening design can be used for facilitating the entry of the unprocessed rod and tube material 25 and the exit of the metal rod and tube material 25 after blanking. The first ac servomotor 1 in the motor transmission mechanism can change the rotation speed of the cam 8 by adjusting the rotation speed, thereby changing the striking force and the striking frequency of the cam 8 on the punch head assembly 17. The second ac servomotor 35 can adjust the rotation speed to change the rotation speed of the metal bar and tube 25, and thus change the position and frequency of the metal bar and tube 25 receiving the striking. The three-jaw chuck 29 drives the metal rod and tube 25 to rotate, so that the metal rod and tube 25 can bear loads at different angles and in different directions.
Claims (5)
1. The utility model provides a low stress impact of high-speed impacted style metal bar tubular product of cam is revolved curved and is sent and split unloader, its characterized in that includes that a terminal connects to be equipped with the motor drive mechanism who rotates cam (8), an accessible sleeve (19) is carried cooperation bar tubular product (25) along longitudinal rotation's bar tubular product fixing device, and one can do the horizontal impact unloading mechanism of intermittent type round impact to sleeve (19) in the bar tubular product fixing device under the effect of drive mechanism cam rotation, wherein:
The transmission mechanism consists of a first alternating current servo motor (1), a first driving belt wheel (3), a first driven belt wheel (6) and a cam (8), wherein the first alternating current servo motor (1) drives the first driving belt wheel (3) to rotate, the first driving belt wheel (3) is in transmission connection with the first driven belt wheel (6) through a first transmission belt (5), and the cam (8) is connected with the wheel center of the first driven belt wheel (6) through a transmission shaft (7);
The bar and pipe material fixing device is arranged in front of the motor transmission mechanism and consists of a second alternating current servo motor (35), a second driving belt wheel (33), a second driven belt wheel (31), a revolving body (30) and a sleeve (19), wherein the second alternating current servo motor (35) drives the second driving belt wheel (33) to rotate, the second driving belt wheel (33) is in transmission connection with the second driven belt wheel (31) through a second transmission belt (32), the revolving body (30) is in coaxial connection with the second driven belt wheel (31), a three-jaw chuck (29) for clamping bar and pipe materials is assembled at one end of the revolving body (30), and the sleeve (19) for clamping the blanking section of the bar and pipe material (25) is assembled outside the three-jaw chuck (29) through a sleeve support member (18);
the transverse impact blanking mechanism is positioned between the transmission mechanism and the rod and pipe material fixing device and consists of an impact assembly movement chamber, a cylindrical guide rail (16), a compression spring (15) and a punch assembly (17), wherein the impact assembly movement chamber is a rectangular concave cavity member which is formed by enclosing a base plate (11), high baffles (12 and 14) at the left side and the right side and low baffles (13 and 10) at the front side and the rear side, the inner surfaces of the high baffles (12 and 14) at the left side and the right side are respectively provided with a transverse dovetail groove, two ends of the cylindrical guide rail (16) are arranged on the low baffles (13 and 10) at the front side and the rear side, the compression spring (15) is sleeved on the cylindrical guide rail (16), the punch assembly (17) is a T-shaped column rod member with an expanded bedplate at the rear end, the lower part of the expanded bedplate at the rear end is provided with a cylindrical guide rail trepanning for sleeving the cylindrical guide rail (16) and pressing the compression spring (15, the left side and the right side of the expanding bedplate are provided with sliding blocks which can move in transverse dovetail grooves of high baffles (12, 14) at the left side and the right side respectively, a post rod punch of a punch component (17) is positioned above a cylindrical guide rail (16), after the transmission mechanism works, the expanding bedplate at the rear end of the punch component (17) is swung and rotated by a cam (8), and can intermittently push a compression spring (15) to move forwards and enable the post rod punch to extend out in a reciprocating manner from the upper part of a low baffle (13) at the front side of a moving cavity, so that a sleeve (19) carrying a blanking section of a rod pipe material is impacted.
2. the cam high-speed impact type metal bar and pipe low-stress impact rotary bending cracking blanking device as claimed in claim 1, wherein two side-by-side deep groove ball bearings (21, 23) are tightly fitted in a sleeve (19) of the bar and pipe fixing device, and two C-shaped snap springs (20, 22) are used for respectively limiting axial movement of the deep groove ball bearings (21, 23).
3. The cam high-speed impact type metal bar and tube low-stress impact rotary bending cracking blanking device as claimed in claim 1, wherein a bar and tube supporting cylinder (28) is arranged between a second driven belt wheel (31) and a revolving body (30) of the bar and tube fixing device, a rolling bearing (27) is assembled in the bar and tube supporting cylinder (28), and the axial movement of the rolling bearing (27) is limited by a third C-shaped clamp spring (26).
4. The cam high-speed impact type metal bar and pipe material low-stress impact rotary bending cracking blanking device as claimed in claim 1, wherein two ports of a sleeve (19) of the bar and pipe material fixing device are designed to be conical ports.
5. The cam high-speed impact type metal bar and tube material low-stress impact rotary bending fracturing blanking device as claimed in claim 1, wherein a soft recoverable polyurethane sleeve (24) is tightly fitted between the sleeve support member (18) and the sleeve (19) of the bar and tube material fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861727.1A CN110539036B (en) | 2019-09-12 | 2019-09-12 | Cam high-speed impact type metal bar pipe material low-stress impact rotary bending cracking blanking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861727.1A CN110539036B (en) | 2019-09-12 | 2019-09-12 | Cam high-speed impact type metal bar pipe material low-stress impact rotary bending cracking blanking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110539036A true CN110539036A (en) | 2019-12-06 |
| CN110539036B CN110539036B (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910861727.1A Expired - Fee Related CN110539036B (en) | 2019-09-12 | 2019-09-12 | Cam high-speed impact type metal bar pipe material low-stress impact rotary bending cracking blanking device |
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| CN (1) | CN110539036B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113333787A (en) * | 2021-05-31 | 2021-09-03 | 中国石油大学(华东) | Low-stress blanking device and method for synchronously grooving inside and outside of medium-diameter and large-diameter thick-wall pipe material |
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| CN113333787B (en) * | 2021-05-31 | 2022-05-03 | 中国石油大学(华东) | Low-stress blanking device and method for synchronously grooving inside and outside of medium-diameter and large-diameter thick-wall pipe material |
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| Publication number | Publication date |
|---|---|
| CN110539036B (en) | 2020-07-07 |
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