CN107350370B - Improved profiling-free necking system and application thereof in workpiece necking processing - Google Patents
Improved profiling-free necking system and application thereof in workpiece necking processing Download PDFInfo
- Publication number
- CN107350370B CN107350370B CN201710781234.8A CN201710781234A CN107350370B CN 107350370 B CN107350370 B CN 107350370B CN 201710781234 A CN201710781234 A CN 201710781234A CN 107350370 B CN107350370 B CN 107350370B
- Authority
- CN
- China
- Prior art keywords
- workpiece
- necking
- driving wheel
- free
- working platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012545 processing Methods 0.000 title claims abstract description 39
- 230000007246 mechanism Effects 0.000 claims abstract description 89
- 230000009471 action Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 16
- 230000033001 locomotion Effects 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- 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
- B30B1/26—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 cams, eccentrics, or cranks
-
- 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
- B30B1/26—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 cams, eccentrics, or cranks
- B30B1/266—Drive systems for the cam, eccentric or crank axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0029—Details of, or accessories for, presses; Auxiliary measures in connection with pressing means for adjusting the space between the press slide and the press table, i.e. the shut height
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention belongs to workpiece forming and processing equipment, and particularly relates to an improved profiling-free necking system and application thereof in workpiece necking processing. The improved profiling-free necking system comprises a driving wheel, driven wheels are arranged on one side of the driving wheel in parallel at intervals in the same axial direction, the distance between the driven wheels and the driving wheel is controlled by a driven wheel ejection mechanism, the rims of the driving wheel and the driven wheels are matched with the appearance of a workpiece opening after necking, a working platform is arranged on one side of the driving wheel and one side of the driven wheel in parallel at intervals, and a crank block rotating mechanism enables the working platform to rotate along the same radial plane of the driving wheel; the bottom of the working platform is provided with a height adjusting device, two ends of the clamping mechanism are respectively arranged on the upper side and the lower side of the working platform, the action execution end clamps the workpiece cavity, and the upper surface of the working platform is provided with a positioning mechanism which is matched with the shape of the workpiece to be processed. The invention effectively solves the technical problems that the prior art is difficult to meet the workpiece necking processing requirement and the like, and has the advantages of better meeting the workpiece processing requirement, ingenious design, easy automatic control and the like.
Description
Technical Field
The invention belongs to workpiece forming and processing equipment, and particularly relates to an improved profiling-free necking system and application thereof in workpiece necking processing.
Background
The necking process is a forming process for shrinking the opening of square and round blanks and pipe fittings which are formed by stretching in advance through a necking die. The range of products processed by the necking process is wider, and the necking process mainly comprises a metal container seal head, a cartridge case, a gun cartridge case, a steel gas cylinder, a bicycle frame vertical pipe, a bicycle saddle pipe, a steel pipe drawing and the like.
For some metal container seal heads, embedded ring welding is required, however, the existing necking equipment with a profiling on the market has the following technical defects: firstly, workpieces with various specifications cannot be processed (a die with corresponding specifications is required to be made according to the size of the workpiece); secondly, the necking quality is poor and the yield is low; thirdly, the processing efficiency is low.
Currently, the market mainly has a category of necking equipment:
1. the main structure of the profiling necking equipment comprises: the device comprises a hydraulic cylinder top wheel mechanism, a hydraulic cylinder clamping mechanism, a forming die and a power mechanism. The working principle is that a stretched workpiece is placed above a forming die, a hydraulic cylinder clamping mechanism stretches out to clamp a blank, a hydraulic cylinder ejection mechanism ejects the extruded workpiece to deform the workpiece, and a power mechanism provides torque to drive the die to rotate so as to finish necking processing of the whole periphery of the workpiece. The problems of the prior art are that one set of dies can only process workpieces with single dimension (external dimension), and the processing cost is high due to the high manufacturing cost of the dies; secondly, the clamping mechanism adopts a hydraulic cylinder, so that the cost is high and the structure is complex; and thirdly, the power device adopts a motor and a speed reducer, and has complex structure, large occupied space and unadjustable rotating speed.
2. The main structure of the profiling-free necking device comprises: the device comprises a working platform, a hydraulic cylinder clamping device, a driving pinch roller, a driven pinch roller, transverse and longitudinal tracks, a pressing hydraulic cylinder, a rotary servo motor, a movable servo motor and a programmable control system. The working principle is that a workpiece is placed on a working platform and is positioned between a driving pinch roller and a driven pinch roller, a hydraulic cylinder clamping device clamps the workpiece and limits the workpiece to move up and down, a pressing hydraulic cylinder ejects the pressed workpiece to deform the pressed workpiece, an operator compiles a corresponding program according to the outline dimension of the workpiece, a rotating servo motor is controlled to drive the working platform to rotate, and the moving servo motor drives the driven pinch roller and the driving pinch roller to move longitudinally and transversely so as to finish necking processing of the whole circumference of the workpiece. The main problem existing in the prior art is that the rotation control servo motor and the movement control servo motor need program control, the matching degree is poor, the workpiece rotation consistency is low, the blank is easy to longitudinally deform at a fillet in the necking process, the product quality after necking processing and forming is affected, and then the sealing effect of a metal container is affected. Secondly, the power device and the linear movement device are controlled by a servo motor, and the operation is finished by programming corresponding to the size of the blank, so that the operation is inconvenient and the processing efficiency is low; thirdly, the workpiece is easy to generate transverse and longitudinal displacement on the working platform; and the clamping mechanism adopts a hydraulic cylinder, so that the cost is high and the structure is complex.
The existing necking equipment in the market is mainly profiling equipment for necking the arched end socket workpiece. The power source executing element is a motor and a speed reducer, and has the advantages of complex structure, large occupied space, unadjustable rotating speed and high equipment cost.
The relevant patent documents retrieved by the applicant are as follows:
the invention patent application with the application number of 201410685758.3 discloses a necking device, which mainly solves the necking processing of dome-shaped seal head parts. The prior art has the problems that firstly, a specific sliding block is manufactured according to the specification of a part, and the cost for processing workpieces with different specifications and special shapes is high; secondly, the workpiece is arranged on the wedge-shaped mandrel, the workpiece is pressed by the pressing piece at the upper part, meanwhile, the workpiece moves downwards along with the wedge-shaped mandrel, the wedge-shaped mandrel supports three sliding blocks, the three sliding blocks contact the inner wall of the side face of the workpiece, and the rolling wheel carries out full-circle rolling on the workpiece. The workpieces move downwards without limit, and the positions of the workpiece limiting tables in the same batch are inconsistent, so that the parallelism of the workpiece shrink opening parts is not easy to guarantee.
The invention patent application with the application number of 201710182589.5 discloses a production device of an embedded air cylinder sealing head. The invention also aims at solving the necking work of the dome-shaped seal head type part, and the equipment is a production line and comprises stamping, seal head edging, seal head necking and the like. The technical scheme of the end socket necking is as follows: the sealing head is placed on the positioning disc, the cylinder tightening device pushes the piston rod to tighten the sealing head to be contracted, at the moment, the column head of the cylinder tightening device is tangent to the outer wall of the circular arc top of the sealing head, the rolling body is tangent to the straight edge of the sealing head, and the contracted rolling body rotates along with the sealing head to realize full-circle contraction. The technical scheme has the technical defects that firstly, a cylinder is adopted to clamp a workpiece, the equipment is complex, and the manufacturing cost is high; secondly, the inner wall of the side face of the workpiece is not contacted with the positioning disc, and the workpiece is easy to deform in the rolling process; thirdly, the positioning disc with corresponding size is manufactured according to the specification requirement of the workpiece, and the processing cost is high.
In terms of the scope of knowledge of the applicant, the performance indexes of the necking processing equipment, the processing technology and the processed and molded products are not regulated or restrained in the current national standard or industry technical specifications, because the workpiece processed by the necking technology is mainly used for manufacturing box products, the final product is mainly realized by a welding technology, the parallelism between the limiting table of the necking workpiece and the bottom surface of the limiting table is higher, and no obvious deformation exists after the necking of the part, otherwise, the tightness and the attractiveness of the product are affected, the parallelism of the necking part of the processed workpiece is ensured and no obvious deformation exists on the basis of the reasons, and the necking processing requirement of the workpiece is met not only the design difficulty of the necking processing equipment, but also one of the main research and development directions of the equipment.
With the rapid development of urban infrastructure and real estate industry and the increasing of mining demands, an unprecedented development space is provided for the dumper, and the market demands of hydraulic oil tanks of the dumper matched parts are also gradually increased. The traditional hydraulic oil tank seal head and the tank body adopt an embedded seam welding process, and the process has the following problems: firstly, no reliable nondestructive testing method exists at present, and the welding quality can only be checked by a process sample and a destructive test; secondly, the tensile strength and the fatigue strength of the lap joint are lower; thirdly, seam welding equipment is high in power, equipment investment is high, maintenance is difficult, and a high-power welding machine generates a large load on a power grid. By embedded girth welding (CO) 2 Gas shielded welding) can solve the defects of the welding process. If the embedded ring welding is adopted, a necking device which can be produced in batch, has high yield and good necking quality and is suitable for workpieces with different sizes is needed. The existing necking equipment can not meet the production requirements.
Disclosure of Invention
The invention aims to provide an improved profiling-free necking system and application thereof in workpiece necking processing.
The invention has the following overall technical concept:
the improved profiling-free necking system comprises a driving wheel driven by a power source, a driven wheel is arranged on one side of the driving wheel at the same axial parallel interval and is controlled to be in clearance with the driving wheel through a driven wheel ejection mechanism, a rim of the driving wheel and a rim of the driven wheel are respectively matched with the appearance of a workpiece opening after necking processing, a working platform is arranged on one side of the driving wheel and one side of the driven wheel at the parallel interval, a rotating mechanism enables the working platform to rotate along the same radial plane of the driving wheel, a crank-slider mechanism is selected for the rotating mechanism, a height adjusting device is arranged at the bottom of the working platform, two ends of a clamping mechanism are respectively arranged on the upper side and the lower side of the working platform, and an action executing end is used for clamping a workpiece cavity, and a positioning mechanism matched with the appearance of the workpiece to be processed is arranged on the upper surface of the working platform.
The application of the improved profiling-free necking system in workpiece necking processing is provided.
The specific technical concept of the invention is as follows:
the crank sliding block mechanism is an evolution form of a hinge four-bar mechanism, and is a mechanism formed by connecting a plurality of rigid components (a revolute pair and a movable pair). Is a mechanism composed of a crank (or a crank shaft and an eccentric wheel), a connecting rod sliding block, a moving pair and a rotating pair. The crank is commonly used for converting the rotary motion of the crank into the reciprocating linear motion of the sliding block; or the reciprocating linear motion of the sliding block is converted into the rotary motion of the crank.
The crank handle sliding block mechanism adopted by the rotating mechanism in the invention preferably adopts a mode that the crank handle sliding block mechanism comprises a mounting seat with a longitudinal height adjusting device at the bottom, one end of a short rocker arm is rotationally assembled with a rotating shaft of the mounting seat and rotates by taking the rotating shaft as a circle center, the other end of the short rocker arm is coaxially rotationally matched with one end of a long rocker arm, and the other end of the long rocker arm is positioned at the bottom of a working platform and is rotationally matched with the bottom of the working platform.
The more preferable technical implementation mode of the height adjusting device is that the rotating shaft of the mounting seat is a sliding shaft, the upper part of the sliding shaft is respectively assembled with the shaft hole of the mounting seat and one end of the short rocker arm in a rotating way, and the sliding shaft positioned below the mounting seat is of a sectional structure which is connected through threads in a matching way.
In order to facilitate the assembly of the driving wheel and the power source, facilitate the guarantee of the stability of the driving wheel and improve the reliability of the power source transmission and the rationality of the layout, the preferred technical scheme is that the power source adopts a hydraulic motor, and the power output end of the power source is connected with the driving wheel through a coupler and a main shaft in sequence. In order to ensure the stability of the transmission and operation of the main shaft, rolling bearings can be used as supports at two ends of the main shaft.
In order to facilitate the power transmission between the linear driving device and the driven wheel, the preferred technical implementation mode is that the driven wheel ejection mechanism comprises a linear driving device which is arranged along the radial direction of the driving wheel, the power output end of the linear driving device is fixed with the driven wheel bracket and drives the driven wheel bracket to reciprocate along the linear direction, and the wheel shaft of the driven wheel is in running fit with the driven wheel bracket.
In order to further ensure the power guiding transmission between the linear driving device and the driven wheel, the more preferable technical implementation mode is that the driven wheel ejection mechanism comprises a sliding sleeve and a transmission shaft which is assembled with the sliding sleeve in a sliding way, and two ends of the transmission shaft are respectively fixedly assembled with a power output end of the linear driving device and a driven wheel bracket.
The linear drive mechanism may be implemented in a variety of prior art ways including, but not limited to, hydraulic cylinders, linear motors, parallelogram mechanisms, screw feed mechanisms, etc. In order to facilitate the adjustment and control of the power of the linear driving device, the preferable technical scheme is that the linear driving device adopts a hydraulic cylinder.
In order to ensure the effective transmission of the output power of the linear driving device and ensure that the driven wheel and the driving wheel form effective extrusion on the workpiece to finish necking processing, a more preferable technical implementation mode is that the driven wheel ejection mechanism comprises a guide block, and the inner end of the guide block is arranged along the motion track of the power output end of the linear driving device and is in guide fit with the guide block.
In order to further improve the power transmission of the driving wheel and the driven wheel during processing and ensure the stability of the coaxial parallel arrangement of the driving wheel and the driven wheel, the preferred technical scheme is that the driven wheel ejection mechanism also comprises a driving wheel which is coaxially and fixedly assembled with the driven wheel, and the rim of the driving wheel is matched with the outer side of the main shaft above the driving wheel.
The main effect of fixture is that cooperation work platform forms the centre gripping to the work piece, in order to be convenient for form effective centre gripping to different work pieces, and preferred technical realization mode is, fixture includes the support of front end and rotary mechanism assembly, sets up the eccentric wheel in the support rear end, sets up the clamp arm on the support, and the clamp arm is by eccentric wheel drive and around the fulcrum rotation on the support, and the front end of clamp arm forms the centre gripping to the work piece. The structure design skillfully utilizes the lever principle to drive the clamping arm so as to form effective clamping with a workpiece.
In order to increase the clamping firmness, the front end of the clamping arm is preferably provided with a clamping plate matched with the workpiece cavity. It can be obvious that the contact surface of the clamping plate and the workpiece is increased to form a better clamping effect, and the positioning effect of the workpiece is further improved by adapting the shape of the clamping plate to the cavity of the workpiece.
In order to increase the adaptation degree of the clamping arm to different workpieces and to increase the acting force between the clamping arm and the workpieces, the preferred technical implementation mode is that the clamping plate is matched with the front end of the clamping arm through a screw feeding device.
The main function of the positioning mechanism is to form stable and effective clamping on the workpiece by matching with the clamping arm, so that the workpiece is ensured not to move in the horizontal and vertical directions when walking along with the workbench, and the parallelism of the shrinkage part of the workpiece is further ensured. The preferable structure mode is that the positioning mechanism adopts limiting blocks which are matched with the shape of the workpiece, uniformly distributed on the upper surface of the working platform and have the same height.
In order to further ensure that the working platform is positioned on the same plane when advancing and rotating and ensure the stability of the working platform and a workpiece in the processing process, the preferred technical implementation mode is that the device further comprises a platform retaining mechanism which comprises pressing wheels arranged on the advancing track of the working platform at intervals and limiting the upper surface and the lower surface of the pressing wheels. It should be apparent that the puck may be used with conventional rolling bearings or wheels without departing from the spirit of the present invention.
In order to improve the adaptability of the working platform arranged at different heights, the preferable technical implementation mode is that the pressing wheel is connected with the panel in a matching way through the pressing wheel frame, and an adjusting device for adjusting the distance between the pressing wheel frame and the pressing wheel is arranged at the joint of the pressing wheel frame and the pressing wheel. The adjustment device can be conveniently realized through various mechanical structures, including but not limited to long holes, bolts matched with the long holes, a gear rack mechanism, a parallelogram mechanism and the like, without departing from the technical spirit of the invention.
In order to adjust the extension length of the pinch roller further and improve the matching reliability with the working platform, a more preferable technical implementation manner is that the wheel shaft of the pinch roller is assembled with the pinch roller frame in a rotating way, and the pinch roller frame is fixed with a long hole formed on the panel along the longitudinal direction.
The application of the improved profiling-free necking system in workpiece necking processing comprises the following process steps:
A. according to the workpiece necking requirement and the workpiece size formed by stretching, the height of the mounting seat is adjusted to control the height of the working platform, so that the corresponding processing stations of the driving wheel and the driven wheel relative to the workpiece are ensured;
B. the mouth part of the workpiece is arranged between the driving pinch roller and the driven pinch roller, and the working platform is pushed to enable the workpiece to be arranged in the limiting block;
C. the action execution end of the adjusting clamping mechanism is attached to the workpiece cavity, and forms clamping and positioning on the workpiece under the action of the working platform and the limiting block;
D. starting a driving wheel and driven wheel ejection mechanism, adjusting the ejection force of the driven wheel setting mechanism to a proper value according to the deformation condition of the workpiece, and adjusting the rotation speed of the driving wheel according to the rotation speed of the workpiece;
E. and rotating the workpiece until the necking processing is completed.
Preferred technical implementation is that a step A is also included between the steps A, B 1 Namely, the extending length and the up-down position of the pressing wheels in the platform holding mechanism are adjusted according to the height of the working platform, so that the working platform is positioned between the two pressing wheels in the running process.
The applicant needs to say that:
the power source, the mounting seat, the sliding shaft, the panel, the pressing wheel frame, the coupler, the main shaft, the sliding sleeve and the driven wheel bracket can be assembled on the basic frame according to the requirements of the structure and the layout, and the arrangement mode is adjusted to be known by those of ordinary skill in the art without departing from the technical essence of the invention.
In the description of the present invention, the terms "bottom," "upper," "lower," "inner," "outer," "rear," "front," "upper surface," "longitudinal," and the like refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of simplifying the description of the present invention, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The essential characteristics and remarkable technical progress of the invention are as follows:
1. the rotating mechanism of the invention adopts a crank-slider mechanism as a main structure, a working platform is used as a slider, a short rocker arm is used as a crank, and a long rocker arm is used as a connecting rod. The working platform is driven by the driving wheel to move and rotate, and then the long rocker arm is driven by the working platform to drive the short rocker arm to rotate so as to realize the auxiliary rotation function. The main advantages are low side contact, small pressure, convenient lubrication, light abrasion, long service life and large power transmission; secondly, the device has low pair and easy processing, can obtain higher precision and has low cost; thirdly, the rod can be long, remote control can be realized, and a more complex motion rule and motion track can be realized by using the connecting rod. Fourthly, the workpiece has good consistency in the processing and rotating process, and is not easy to deform.
2. The clamping mechanism utilizes the force amplification principle of the eccentric wheel and the lever to realize workpiece clamping. The mechanism has simple structure, convenient operation and rapid clamping.
3. The power source adopts the hydraulic motor, and the hydraulic transmission device has the technical advantages of small volume, light weight, compact structure and flexible layout under the condition of transmitting the same power. Secondly, the speed, torque and power can be steplessly regulated, the action response is fast, the reversing and speed changing can be performed rapidly, the speed regulating range is wide, the action rapidity is good, the control and regulation are simpler, the operation is more convenient and labor-saving, and the electric control is convenient to cooperate. Thirdly, the self-lubricating property of the element is good, overload protection and pressure maintaining are easy to realize, and the element is safe and reliable; the element is easy to realize serialization, standardization and generalization. Fourthly, the reliability of hydraulic transmission is good. Fifth, the hydraulic power executive component has lower cost and lower equipment cost.
4. The structural design of the guide block, the limiting block and the platform holding mechanism has the technical advantages that the guide block has the limiting function and simultaneously ensures that the driven wheel and the driving wheel are in a stable balance state; secondly, the limiting block ensures that the workpieces are positioned on the same plane in the machining process, and the matching of the limiting block and the clamping arm effectively satisfies the longitudinal and transverse stability of the workpieces; thirdly, the platform holding mechanism avoids the platform swinging phenomenon caused by installation errors and gaps, and effectively realizes that the working platform is positioned in the same plane in the processing process.
Drawings
Fig. 1 is a perspective view of an improved profiling-free necking system in accordance with the present invention.
Fig. 2 is a schematic diagram of the working states of the rotating mechanism and the clamping mechanism in the invention.
Fig. 3 is a schematic structural view of the driving wheel, driven wheel and platform holding mechanism in the present invention.
Fig. 4 is a schematic diagram of the cooperation of the driving wheel, the driven wheel and the workpiece in the invention.
Reference numerals in the drawings are as follows:
1. a power source; 2. a fixed bracket; 3. a frame; 4. a coupling; 5. a main shaft; 6. a rolling bearing; 7. a shaft sleeve; 8. a driving wheel; 9. a linear driving device; 10. a sliding sleeve; 11. a transmission shaft; 12. a driven wheel bracket; 13. a driving wheel; 14. driven wheel; 15. a guide block; 16. a mounting base; 17. a sliding shaft; 18. a short rocker arm; 19. a long rocker arm; 20. a working platform; 21. a limiting block; 22. a base; 23. a bracket; 24. an eccentric wheel; 25. a clamping arm; 26. a screw feed device; 27. a clamping plate; 28. a panel; 29. a pressing wheel frame; 30. the pinch roller.
Detailed Description
The present invention will be further described with reference to the following examples, but should not be construed as limiting the invention, and the scope of the invention is defined by the appended claims, and any equivalents thereof may be substituted according to the description without departing from the scope of the invention.
The improved profiling-free necking system in the embodiment is as shown in the figure, and comprises a driving wheel 8 driven by a power source 1, wherein the power source is arranged on a fixed support 2 at the upper part of a frame 3, a driven wheel 14 is coaxially and parallelly arranged at one side of the driving wheel 8 at intervals and controls the distance between the driven wheel 14 and the driving wheel 8 through a driven wheel ejection mechanism, the rims of the driving wheel 8 and the driven wheel 14 are respectively matched with the appearance of a workpiece opening after necking processing, a working platform 20 is arranged at one side of the driving wheel 8 and one side of the driven wheel 14 at intervals in parallel, a rotating mechanism enables the working platform 20 to rotate along the same radial plane of the driving wheel 8, a crank slider mechanism is selected as the rotating mechanism, a height adjusting device is arranged at the bottom of the working platform 20, two ends of a clamping mechanism are respectively arranged at the upper side and the lower side of the working platform 20, and an action executing end forms clamping on a workpiece cavity, and a positioning mechanism matched with the appearance of a workpiece to be processed is arranged on the upper surface of the working platform 20.
The crank handle sliding block mechanism adopts a structure comprising a mounting seat 16 with a longitudinal height adjusting device at the bottom, one end of a short rocker arm 18 is rotatably assembled with a rotating shaft of the mounting seat 16 and rotates by taking the rotating shaft as a circle center, the other end of the short rocker arm 18 is coaxially rotatably matched with one end of a long rocker arm 19, and the other end of the long rocker arm 19 is positioned at the bottom of a working platform 20 and is rotatably matched with the working platform 20.
The height adjusting device is characterized in that a rotating shaft of a mounting seat 16 is a sliding shaft 17, the upper part of the sliding shaft 17 is respectively assembled with a shaft hole of the mounting seat 16 and one end of a short rocker arm 18 in a rotating mode, the lower end of the sliding shaft 17 is fixedly assembled with a base 22, and the sliding shaft 17 below the mounting seat 16 is of a sectional structure which is connected through threads.
The power source 1 adopts a hydraulic motor, and the power output end of the power source 1 is connected with a driving wheel 8 through a coupler 4 and a main shaft 5 in sequence. The two ends of the main shaft 5 are assembled with the inner cavity of the shaft sleeve 7 in a rotating way through the rolling bearings 6. The outer side of the shaft sleeve 7 is fixed with the frame 3.
The driven wheel ejection mechanism comprises a linear driving device 9 which is arranged along the radial direction of the driving wheel 8, the power output end of the linear driving device 9 is fixed with a driven wheel bracket 12 arranged on the frame 3 and drives the driven wheel bracket 12 to reciprocate along a straight line, and the wheel shaft of the driven wheel 14 is in running fit with the driven wheel bracket 12.
The driven wheel ejection mechanism comprises a sliding sleeve 10 and a transmission shaft 11 which is in sliding assembly with the sliding sleeve 10, the outer end of the sliding sleeve 10 is fixed with the frame 3, and two ends of the transmission shaft 11 are respectively and fixedly assembled with the power output end of the linear driving device 9 and the driven wheel bracket 12.
The linear driving device 9 is a hydraulic cylinder.
The driven wheel ejection mechanism comprises a guide block 15, and the inner end of the guide block 5 is arranged along the motion track of the power output end of the linear driving device 9 and is in guide fit with the motion track.
The driven wheel ejection mechanism also comprises a driving wheel 13, the driving wheel 13 and the driven wheel 14 are coaxially and fixedly assembled, and the rim of the driving wheel 13 is matched with the outer side of the main shaft 5 above the driving wheel 8.
The clamping mechanism comprises a bracket 23 with the front end assembled with the rotating mechanism, an eccentric wheel 24 arranged at the rear end of the bracket 23, and a clamping arm 25 arranged on the bracket 23, wherein the clamping arm 25 is driven by the eccentric wheel 24 and rotates around a fulcrum on the bracket 23, and the front end of the clamping arm 25 clamps a workpiece.
The front end of the clamping arm 25 is equipped with a clamping plate 27 adapted to the workpiece cavity. The clamping plate 27 is coupled to the front end of the clamping arm 25 by a screw feed 26.
The positioning mechanism selects 4 limiting blocks 21 which are matched with the shape of the workpiece, uniformly distributed on the upper surface of the working platform 20 and have the same height.
A platform holding mechanism is also included, including pinch rollers 30 spaced apart on the path of travel of work platform 20 and limiting the upper and lower surfaces thereof. Pinch roller 30 is a conventional rolling bearing.
The pinch roller 30 is matched and connected with the panel 28 through a pinch roller frame 29, and an adjusting device for adjusting the distance between the pinch roller frame 29 and the pinch roller 30 is arranged at the joint of the pinch roller frame 29 and the pinch roller 30.
The wheel shaft of the pinch roller 30 is rotationally assembled with the pinch roller frame 29, and the pinch roller frame 29 is fixed with a long hole formed on the panel 28 along the longitudinal direction.
The application of the improved profiling-free necking system in workpiece necking processing comprises the following process steps:
A. according to the workpiece necking requirement and the workpiece size formed by stretching, the height of the working platform 20 is controlled by adjusting the height of the mounting seat 16, so that the corresponding processing stations of the driving wheel 8 and the driven wheel 14 relative to the workpiece are ensured;
B. the mouth part of the workpiece is arranged between the driving pinch roller 8 and the driven pinch roller 14, and the working platform 20 is pushed to enable the workpiece to be arranged in the limiting block 21;
C. the action execution end of the adjusting clamping mechanism is attached to the workpiece cavity, and forms clamping and positioning on the workpiece under the action of the working platform 20 and the limiting block 21;
D. starting the driving wheel 8 and the driven wheel ejection mechanism, adjusting the ejection force of the driven wheel setting mechanism to a proper value according to the deformation condition of the workpiece, and adjusting the rotating speed of the driving wheel 8 according to the rotating speed of the workpiece;
E. and rotating the workpiece until the necking processing is completed.
Preferred technical implementation is that a step A is also included between the steps A, B 1 That is, the extending length and the up-down position of the pressing wheels 30 in the platform holding mechanism are adjusted according to the height of the working platform 20, so that the working platform 20 is positioned between the two pressing wheels 30 in the running process.
The remainder is as described above.
Claims (19)
1. The improved profiling-free necking system comprises a driving wheel (8) driven by a power source (1) to rotate, driven wheels (14) are coaxially arranged at one side of the driving wheel (8) at intervals in parallel and are controlled by a driven wheel ejection mechanism to control the distance between the driven wheels and the driving wheel (8), the rims of the driving wheel (8) and the driven wheels (14) are respectively matched with the appearance of a workpiece mouth after necking, and a working platform (20) is arranged at one side of the driving wheel (8) and the driven wheels (14) at intervals in parallel; the device is characterized in that the rotating mechanism enables the working platform (20) to rotate along the same radial plane of the driving wheel (8), and the rotating mechanism adopts a crank-slider mechanism; the bottom of the working platform (20) is provided with a height adjusting device, two ends of the clamping mechanism are respectively arranged on the upper side and the lower side of the working platform (20), the action execution end clamps the workpiece cavity, and the upper surface of the working platform (20) is provided with a positioning mechanism which is matched with the shape of the workpiece to be processed.
2. The improved profiling-free necking system according to claim 1, characterized in that the crank slider mechanism comprises a mounting seat (16) with a longitudinal height adjusting device at the bottom, one end of a short rocker arm (18) is rotatably assembled with a rotating shaft of the mounting seat (16) and rotates around the center of the circle, the other end of the short rocker arm (18) is coaxially rotatably matched with one end of a long rocker arm (19), and the other end of the long rocker arm (19) is positioned at the bottom of the working platform (20) and rotatably matched with the bottom.
3. The improved profiling-free necking system according to claim 2, characterized in that the rotating shaft of the mounting seat (16) is a sliding shaft (17), the upper part of the sliding shaft (17) is rotatably assembled with the shaft hole of the mounting seat (16) and one end of the short rocker arm (18) respectively, and the sliding shaft (17) below the mounting seat (16) is of a sectional structure which is connected through threads.
4. An improved profiling-free necking system according to any one of claims 1, 2 or 3, characterized in that the power source (1) adopts a hydraulic motor, and the power output end of the power source (1) is connected with a driving wheel (8) through a coupling (4) and a main shaft (5) in sequence.
5. An improved profiling-free necking system according to claim 1 or 2, characterized in that the driven wheel ejection mechanism comprises a linear driving device (9) arranged along the radial direction of the driving wheel (8), the power output end of the linear driving device (9) is fixed with the driven wheel bracket (12) and drives the driven wheel bracket (12) to reciprocate along a straight line, and the wheel axle of the driven wheel (14) is in rotary fit with the driven wheel bracket (12).
6. The improved profiling-free necking system as claimed in claim 4 wherein the driven wheel ejection mechanism comprises a sliding sleeve (10) and a transmission shaft (11) slidingly assembled with the sliding sleeve, and two ends of the transmission shaft (11) are fixedly assembled with the power output end of the linear driving device (9) and the driven wheel bracket (12) respectively.
7. The improved profiling-free necking system as claimed in claim 5, characterized in that the linear driving device (9) is a hydraulic cylinder.
8. The improved profiling-free necking system as claimed in claim 4 wherein the driven wheel ejection mechanism includes a guide block (15), the inner end of the guide block (15) is arranged along the motion track of the power output end of the linear driving device (9) and is in guiding fit with the guide block.
9. The improved profiling-free necking system according to claim 4 wherein the driven wheel ejection mechanism further comprises a driving wheel (13), the driving wheel (13) is fixedly assembled with the driven wheel (14) coaxially, and the rim of the driving wheel (13) is matched with the outer side of the main shaft (5) above the driving wheel (8).
10. An improved profiling-free necking system according to claim 1 or 2, characterized in that the clamping mechanism comprises a bracket (23) with a front end assembled with the rotating mechanism, an eccentric (24) arranged at the rear end of the bracket (23), a clamping arm (25) arranged on the bracket (23), the clamping arm (25) being driven by the eccentric (24) and rotating around a fulcrum on the bracket (23), the front end of the clamping arm (25) forming a clamp for the workpiece.
11. An improved profiling-free necking system as claimed in claim 10, characterized in that the front end of the clamping arm (25) is equipped with a clamping plate (27) adapted to the workpiece cavity.
12. An improved profiling-free necking system as claimed in claim 11, characterized in that the clamping plate (27) is coupled to the front end of the clamping arm (25) by a screw feed (26).
13. The improved profiling-free necking system according to claim 1 or 2, characterized in that the positioning mechanism adopts limiting blocks (21) which are matched with the shape of a workpiece, uniformly distributed on the upper surface of the working platform (20) and have the same height.
14. The improved profiling-free necking system of claim 1 or 2 further comprising a platform holding mechanism including pinch rollers (30) spaced on the travel path of the work platform (20) and limiting its upper and lower surfaces.
15. The improved profiling-free necking system according to claim 14, wherein the pinch roller (30) is connected with the panel (28) in a matching way through a pinch roller frame (29), and an adjusting device for adjusting the distance between the pinch roller frame (29) and the pinch roller (30) is arranged at the joint of the pinch roller frame and the panel.
16. The improved profiling-free necking system according to claim 15 wherein the wheel axle of the pinch roller (30) is rotatably assembled with the pinch roller frame (29), the pinch roller frame (29) is bolted to a vertically elongated slot in the faceplate (28).
17. Use of an improved profiling-free necking system in accordance with any one of claims 1-16 in workpiece necking machining.
18. Use according to claim 17, characterized by comprising the following process steps:
A. according to the workpiece necking requirement and the workpiece size formed by stretching, the height of the mounting seat (16) is adjusted to control the height of the working platform (20), so that the processing stations corresponding to the driving wheel (8) and the driven wheel (14) relative to the workpiece are ensured;
B. the mouth part of the workpiece is arranged between the driving pinch roller (8) and the driven pinch roller (14), and the working platform (20) is pushed to enable the workpiece to be arranged in the limiting block (21);
C. the action execution end of the adjusting clamping mechanism is attached to the workpiece cavity, and the workpiece is clamped and positioned under the action of the working platform (20) and the limiting block (21);
D. starting a driving wheel (8) and a driven wheel ejection mechanism, adjusting the ejection force of a driven wheel setting mechanism to a proper value according to the deformation condition of a workpiece, and adjusting the rotating speed of the driving wheel (8) according to the rotating speed of the workpiece;
E. and rotating the workpiece until the necking processing is completed.
19. The application of claim 18, further comprising a step a between steps A, B 1 I.e.According to the height of the working platform (20), the extension length and the up-down position of the pressing wheels (30) in the platform holding mechanism are adjusted, so that the working platform (20) is positioned between the two pressing wheels (30) in the running process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710781234.8A CN107350370B (en) | 2017-09-01 | 2017-09-01 | Improved profiling-free necking system and application thereof in workpiece necking processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710781234.8A CN107350370B (en) | 2017-09-01 | 2017-09-01 | Improved profiling-free necking system and application thereof in workpiece necking processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107350370A CN107350370A (en) | 2017-11-17 |
| CN107350370B true CN107350370B (en) | 2023-07-11 |
Family
ID=60290728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710781234.8A Active CN107350370B (en) | 2017-09-01 | 2017-09-01 | Improved profiling-free necking system and application thereof in workpiece necking processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107350370B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465349B (en) * | 2018-12-29 | 2023-09-08 | 宁波祥润自动化设备有限公司 | Compressing mechanism of cooling pipe straight edge necking device and cooling pipe straight edge necking device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2187988Y (en) * | 1991-11-23 | 1995-01-25 | 泰县第三机械厂 | LG steel cylinder cap bore reducing machine |
| JP4169146B2 (en) * | 2002-08-30 | 2008-10-22 | 旭精機工業株式会社 | Crank press machine |
| CN101875245A (en) * | 2010-05-13 | 2010-11-03 | 北京奥科瑞丰机电技术有限公司 | Circular mould flatwise type biomass extrusion moulding machine |
| CN104826960B (en) * | 2015-05-13 | 2016-09-14 | 濮阳市鸿宇压力容器有限公司 | A kind of seal head necking machine |
| CN205056851U (en) * | 2015-09-08 | 2016-03-02 | 连云港市天意消防器材有限公司 | Steel bottle hydraulic pressure throat machine |
| CN207308772U (en) * | 2017-09-01 | 2018-05-04 | 河北华春液压汽配有限公司 | Improved non-bacterial meningitis necking system |
-
2017
- 2017-09-01 CN CN201710781234.8A patent/CN107350370B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107350370A (en) | 2017-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104493485B (en) | Rolling welder | |
| CN204504573U (en) | Before and after crane frame, section group is to frock | |
| CN104493408A (en) | Assembling tool for front and rear sections of frames of cranes | |
| CN208005159U (en) | A kind of tubing joint close automatic assembly line | |
| CN207171439U (en) | Secondary serialization floating press-loading apparatus | |
| CN105750799B (en) | Compressor body three is spot welded positioning device | |
| CN108555125B (en) | Wheel rim valve hole punching device and wheel rim valve hole punching method | |
| CN204523970U (en) | Square flange automatic punch machine | |
| CN113414265B (en) | Full-automatic traceless bending processing equipment | |
| CN101585125B (en) | Arc guide frame device of H-type steel horizontal assembly and welding integrated machine | |
| CN107350370B (en) | Improved profiling-free necking system and application thereof in workpiece necking processing | |
| CN109623042A (en) | A kind of bend pipe double end welding groove processing tool | |
| CN111716073A (en) | An adaptive high-precision five-axis servo roller frame | |
| CN207308772U (en) | Improved non-bacterial meningitis necking system | |
| CN209998610U (en) | body machine for container pairing and girth welding | |
| CN202263855U (en) | Material loading/unloading following auxiliary centering carriage | |
| CN214024390U (en) | A press that is used for spiral welded tube mill high strength bearing to process | |
| CN221159100U (en) | Automatic welding device for rear cover of automobile rear axle housing reinforcing ring | |
| CN116060738B (en) | Aluminum alloy powder tank car body vertical assembly device | |
| CN219484659U (en) | Ship portal frame welding device | |
| CN203973068U (en) | Automatically two girth welding machines | |
| CN203599722U (en) | Fuel tank end cover welding machine | |
| CN202037220U (en) | Double flanging machine | |
| CN103753226B (en) | A kind of pipe joint forming machine | |
| CN215239080U (en) | Press-fitting mechanism in tension pulley assembly machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |