CN108907737B - Connecting rod expanding machine - Google Patents
Connecting rod expanding machine Download PDFInfo
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- CN108907737B CN108907737B CN201810796019.XA CN201810796019A CN108907737B CN 108907737 B CN108907737 B CN 108907737B CN 201810796019 A CN201810796019 A CN 201810796019A CN 108907737 B CN108907737 B CN 108907737B
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- 238000003825 pressing Methods 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 45
- 208000010727 head pressing Diseases 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims 2
- 238000000429 assembly Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 31
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000010354 integration Effects 0.000 abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 abstract description 4
- 238000011143 downstream manufacturing Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 20
- 238000003754 machining Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
Abstract
The invention relates to a connecting rod expanding machine, which is characterized in that a turntable bracket is rotatably and liftably arranged on a rack, and a loading and unloading station, a laser grooving station, an expanding station, a bolt assembling station, a bolt tightening station and a bushing pressing station are arranged around the turntable bracket; the clamp tables of all stations are provided with a pallet yielding channel suitable for lifting and passing of the material conveying pallet and a pile body yielding channel suitable for lifting and passing of the large-head positioning pile. The connecting rod expanding machine has high integration level, can save the occupied space of equipment, simplify personnel configuration and effectively improve the processing precision; through seting up the layer board on each station anchor clamps platform and stepping down the passageway and cooperating with fortune material layer board and seting up the pile body and stepping down the passageway and cooperating with big end locating pile, can realize the automatic unloading of going up of each processing procedure, can make the perfect linking cooperation of upstream and downstream process, can improve production efficiency effectively.
Description
Technical Field
The invention belongs to the technical field of connecting rod production, and particularly relates to a connecting rod expanding machine.
Background
The connecting rod is used as an important part of the engine and is subjected to high periodic impact force, inertia force and bending force in the working process. The quality of the manufacture of the connecting rod directly affects the performance and reliability of the engine, which requires that the connecting rod should have high strength, toughness and fatigue resistance, as well as high accuracy.
The machining process of the connecting rod generally comprises rough machining, expanding fracture, finish machining, milling a small-head inclined plane and the like, wherein the specific technical process of the connecting rod expanding fracture machining technology comprises the following steps: two symmetrical V-shaped expansion fracture grooves are machined in advance at the fracture line of a large end hole of a connecting rod blank to form an initial fracture source; radial force is applied to the side surface of the inner hole of the big end of the connecting rod on the expanding device, so that the crack is continuously expanded outwards from the inner hole until the connecting rod is completely expanded, and finally, the connecting rod cover is expanded from the connecting rod body to be separated; and (3) under the condition that the connecting rod cover and the body after the expansion separation are completely meshed with each other at the fracture surface, the bolt working procedure and other subsequent processing working procedures are completed.
The traditional connecting rod expansion cutting machining generally needs multiple sets of equipment such as laser grooving, expansion cutting, bushing pressing and the like, the equipment integration level is low, the occupied space is large, and the machining precision is influenced due to complex operation. In addition, in the expansion fracture processing technology, the connecting rod transfer between adjacent working procedures is generally completed through a mechanical arm, a plurality of sets of mechanical arms are required to be configured, and the equipment cost and the operation cost are high.
Disclosure of Invention
The embodiment of the invention relates to a connecting rod expanding machine, which at least can solve part of defects in the prior art.
The embodiment of the invention relates to a connecting rod expanding machine, which comprises a rack, wherein a turntable bracket is rotatably and liftably arranged on the rack, a plurality of material conveying supporting plates are outwards convexly arranged on the periphery of the turntable bracket, each material conveying supporting plate is annularly arranged along the periphery of the turntable bracket, a large-head positioning pile in the shape of a double-blade axe is arranged on each material conveying supporting plate, one circular arc end of the large-head positioning pile is fixed on the edge of the corresponding material conveying supporting plate, and the other circular arc end of the large-head positioning pile extends out of the material conveying supporting plate;
the automatic positioning pile comprises a rack, and is characterized in that an upper blanking station, a laser grooving station, a breaking station, a bolt assembling station, a bolt tightening station and a bushing pressing station are formed in the rack, each station is arranged along the circumference of a turntable bracket and surrounds the turntable bracket, a corresponding fixture table and a processing device are respectively arranged on each station, and a supporting plate abdicating channel suitable for lifting and passing of a material conveying supporting plate and a pile body abdicating channel communicated with the supporting plate abdicating channel and suitable for lifting and passing of a large-end positioning pile are formed on each fixture table.
As one embodiment, the fixture table on the laser grooving station is a grooving fixture table, a small-head cushion plate is rotatably installed on the grooving fixture table, the axial direction of a cushion plate rotating shaft is vertical, and a plurality of small-head positioning piles are arranged on the small-head cushion plate around the cushion plate rotating shaft; the pile body abdication channel of grooving anchor clamps platform both sides all are equipped with big head locating pin and big head and compress tightly the subassembly, the backing plate pivot with two be isosceles triangle arranges between the big head locating pin, two the interval of big head locating pin and the sum of two diameters are less than the diameter of connecting rod big head hole.
As one of the embodiments, the spacing between each small-end positioning pile and the backing plate rotating shaft is unequal; and/or each small-head positioning pile is provided with a small-head arc-shaped positioning surface for abutting against the inner wall of the small-head hole of the connecting rod, and the diameters of the small-head arc-shaped positioning surfaces are different.
As one of the embodiments, the fixture table on the breaking station is a breaking fixture table, the breaking fixture table is provided with a big head square positioning groove adapted to the big head of the connecting rod and a small head square positioning groove adapted to the small head of the connecting rod, and the support plate yielding channel on the breaking fixture table is formed between the two square positioning grooves and the corresponding pile yielding channel is formed at the bottom of the big head square positioning groove.
As one of the embodiments, the expanding-breaking device arranged on the expanding-breaking station comprises an expanding-breaking head arranged above the expanding-breaking clamp platform through an expanding-breaking head lifting mechanism, the expanding-breaking head comprises an expanding-breaking mounting plate, an expanding-breaking judging sleeve, an expanding-breaking pull rod matched with the wedge surface of the expanding-breaking sleeve and a small-head expanding-breaking positioning pile used for positioning the small end of the connecting rod, the expanding-breaking judging sleeve is fixed on the expanding-breaking mounting plate, the expanding-breaking sleeve and the small-head expanding-breaking positioning pile are arranged on a movable table, and the movable table is horizontally arranged on the expanding-breaking mounting plate in a sliding mode.
As one of the embodiments, the distance between the expanding sleeve and the small-head expanding positioning pile is adjustable.
As one embodiment, one end of the large-head square positioning groove, which is close to the corresponding support plate abdication channel, is a through end, the other end is a non-through end, and the end wall is a vertical wall surface.
As one of the embodiments, the fixture platform on the bushing pressing station is a bushing pressing fixture platform, the bushing pressing device arranged at the bushing pressing station comprises a bushing pressing workbench, a bushing pressing rod arranged above the bushing pressing workbench and a finishing rod arranged below the bushing pressing workbench, and the bushing pressing fixture platform is arranged beside the bushing pressing workbench and is connected with the bushing pressing workbench through a manipulator.
As one embodiment, each material conveying supporting plate is further provided with a rod body cushion block.
As one of the embodiments, each material transporting supporting plate is further provided with at least one group of positioning screws for abutting against the side edges of the connecting rod body, and the circle centers of the circular arc ends of the big-end positioning piles and the corresponding groups of positioning screws are arranged in an isosceles triangle.
The embodiment of the invention has at least the following beneficial effects:
the connecting rod expanding machine integrates the laser grooving process, the expanding process, the bolt assembling process and the bushing pressing process into one set of equipment, has high equipment integration level, can save the occupied space of the equipment, simplifies the personnel configuration and effectively improves the machining precision. The support plate abdicating channels are formed in the clamp tables of all stations and matched with the material conveying support plates, the pile body abdicating channels are formed in the clamp tables of all stations and matched with the big-end positioning piles, all the material conveying support plates are respectively rotated to the positions above the corresponding clamp tables through rotation of the turntable brackets, and then the connecting rods to be processed can be placed on the corresponding clamp tables in a sinking mode of the turntable brackets, so that automatic feeding is realized; after the processing is finished, the connecting rod is lifted up through the lifting of the turntable bracket and then is rotated to leave the clamp table, so that the connecting rod can be transported to the next working procedure, and automatic blanking is realized; therefore, the connecting rod expanding machine can realize automatic feeding and discharging of each processing procedure, has a simple structure and reliable operation, can ensure that the upstream procedure and the downstream procedure are perfectly connected and matched, has lower equipment cost and operation cost, and can effectively improve the production efficiency.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a general layout diagram of a connecting rod expanding machine according to an embodiment of the present invention;
FIG. 2 is a schematic view of a material handling pallet support link according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an assembly structure of a material transporting supporting plate and a large-head positioning pile according to an embodiment of the present invention;
FIG. 4 is a schematic view of a slot clamping table and a material transporting pallet according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a laser kerf device cutting a crack kerf according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a breaking device according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of the cooperation of the breaking clamp table and the material transporting pallet according to the embodiment of the present invention;
FIG. 8 is a schematic structural view of a bushing pressing device according to an embodiment of the present invention;
fig. 9 is a schematic diagram of cooperation between a bushing clamping table and a material transporting pallet according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, an embodiment of the present invention provides a connecting rod expanding machine, including a frame 1, a turntable bracket 101 is rotatably and liftably mounted on the frame 1, a plurality of material transporting supporting plates 8 are outwardly protruded from the periphery of the turntable bracket 101, each material transporting supporting plate 8 is annularly arranged along the circumferential direction of the turntable bracket 101, each material transporting supporting plate 8 is provided with a large-head positioning pile 801 in the shape of a double-blade axe, one circular arc end of the large-head positioning pile 801 is fixed on the edge of the corresponding material transporting supporting plate 8, and the other circular arc end extends out of the material transporting supporting plate 8; the machine frame 1 is provided with a loading and unloading station 2, a laser grooving station, a breaking station, a bolt assembling station, a bolt tightening station and a bushing pressing station, wherein each station is arranged along the circumference of the turntable bracket 101 around the turntable bracket 101, each station is respectively provided with a corresponding fixture platform and a processing device, and each fixture platform is provided with a support plate abdicating channel suitable for lifting and passing of the material conveying support plate 8 and a pile body abdicating channel communicated with the support plate abdicating channel and suitable for lifting and passing of the big-end positioning pile 801.
As can be easily understood, the laser grooving device 3 is arranged at the laser grooving station to finish the processing of the V-shaped expansion groove/crack groove/stress groove in the big-end hole of the connecting rod; arranging a breaking device 4 at the breaking station to finish the breaking operation of the connecting rod; a bolt pre-tightening device 5 is arranged at the bolt assembling station and is provided with a bolt conveying mechanism to complete the bolt pre-tightening operation; arranging a bolt final tightening device 6 at a bolt tightening station to finish the bolt final tightening operation; and a bushing pressing device 7 is arranged at the bushing pressing station, so that bushing pressing operation in the small end hole of the connecting rod is completed. Preferably, the turntable bracket 101 is disc-shaped and is coaxial with the corresponding rotating shaft, that is, the turntable bracket 101 rotates around its own axis; for its rotatable and liftable structure, the following structure may be adopted: the turntable bracket 101 is rotatably installed on a lifting table which is installed on the frame 1 in a lifting manner; of course, the present invention is not limited to this configuration, and the turntable bracket 101 may be installed on a turntable which is rotatably installed on the frame 1; the turntable bracket 101 can be rotated and lifted, wherein the lifting function is preferably realized by a hydraulic cylinder, and the rotation function is preferably realized by a motor reducer.
The big head positioning pile 801 is in a double-blade axe shape, namely, comprises a first arc end with a first arc positioning surface and a second arc end with a second arc positioning surface, wherein the first arc positioning surface and the second arc positioning surface are both parallel to the vertical direction and have the same diameter, so that the two arc positioning surfaces can be respectively positioned in contact with the inner wall of a big head hole of a connecting rod, and the big head positioning pile 801 adopting the structure can be supported by a corresponding clamp table when the material conveying supporting plate 8 sinks due to the fact that the area of a pile body abdicating channel is smaller than that of the big head hole of the connecting rod. The vertical symmetry plane of the first circular arc locating surface/the second circular arc locating surface (the left end and the right end of the circular arc locating surface are symmetrical relative to the vertical symmetry plane) is also the vertical symmetry plane of the big head locating pile 801, the horizontal extending direction of the vertical symmetry plane is the length direction of the big head locating pile 801, then the length of the material conveying support plate 8 is not greater than the length of the rod body of the connecting rod along the length direction of the big head locating pile 801, namely, the length of the support plate abdicating channel is less than the length of the rod body of the connecting rod, so that when the material conveying support plate 8 sinks, the small end of the connecting rod can be supported by the corresponding clamp table. For the disc-shaped turntable bracket 101 described above, the vertical symmetry plane of the large-end spud 801 is preferably passing through the axis of the turntable bracket 101, i.e. the large-end spud 801 is arranged in the radial direction of the turntable bracket 101, which is preferably mounted at the end of the corresponding material handling pallet 8 remote from the turntable bracket 101.
Because six stations are arranged beside the turntable bracket 101 in a surrounding manner, the number of the material conveying support plates 8 is preferably a multiple of 6 (6, 12, 18.) and is uniformly arranged in a surrounding manner along the circumference of the turntable bracket 101, and the 6 stations are also preferably uniformly arranged in a surrounding manner along the circumference of the turntable bracket 101, so that 6 stations can simultaneously correspond to the 6 material conveying support plates 8 one by one, and the 6 stations can be simultaneously operated, thereby improving the processing efficiency.
The connecting rod expanding machine integrates the laser grooving process, the expanding process, the bolt assembling process and the bushing pressing process into one set of equipment, has high equipment integration level, can save the occupied space of the equipment, simplifies the personnel configuration, and effectively improves the machining precision. According to the connecting rod expanding machine provided by the embodiment, the support plate yielding channels are formed in the clamp tables of all stations and are matched with the material conveying support plates 8, the pile body yielding channels are formed in the clamp tables of all stations and are matched with the big-end positioning piles 801, all the material conveying support plates 8 are respectively rotated to the positions above the corresponding clamp tables through rotation of the turntable brackets 101, and then the connecting rods to be processed can be placed on the corresponding clamp tables in a sinking mode of the turntable brackets 101, so that automatic feeding is realized; after the machining is finished, the rotary table bracket 101 rises to support the connecting rod, and then the connecting rod is rotated to leave the clamp table, so that the connecting rod can be transported to the next process, and automatic blanking is realized. Therefore, the connecting rod expanding machine provided by the embodiment can realize automatic feeding and discharging of each processing procedure, has a simple structure and reliable operation, can ensure that the upstream and downstream procedures are perfectly connected and matched, has lower equipment cost and operation cost, and can effectively improve the production efficiency.
Further, as shown in fig. 2 and 3, each material transporting supporting plate 8 is provided with a connecting rod supporting and positioning mechanism for supporting and positioning the connecting rod, so that the positioning accuracy of the connecting rod in each process is ensured, and the processing precision is improved. The connecting rod supporting and positioning mechanism further comprises at least one group of positioning screws 802 for abutting against the side edges of the connecting rod body besides the large-head positioning pile 801, and each group of positioning screws 802 is preferably symmetrically arranged relative to the vertical symmetry plane of the large-head positioning pile 801, namely: for the central axis of the cylindrical surface where the first circular arc locating surface and the second circular arc locating surface are located, the central axis and each set of locating screws 802 are arranged in an isosceles triangle, or the circle center of the circular arc end of the big head locating pile 801 and each set of locating screws 802 are arranged in an isosceles triangle. In this embodiment, two sets of positioning screws 802 are included, where the two sets of positioning screws 802 are sequentially arranged along the length direction of the big end positioning pile 801, one set is used to abut against the outer circular surface of the small end of the connecting rod, and the other set is used to abut against the outer circular surface of the big end of the connecting rod. In addition, a rod body cushion block 803 can be further arranged on the material conveying supporting plate 8 and used for supporting a rod body so as to compensate the height difference between the rod body and the big end of the connecting rod, so that the connecting rod is horizontally supported on the material conveying supporting plate 8.
In the above-mentioned connecting rod expanding machine, the bolt pre-tightening device 5 and the bolt final-tightening device 6 are all conventional bolt tightening devices in the field, and specific structures thereof are not described herein. While the preferred apparatus provided in the respective embodiments described below may be employed for the laser grooving apparatus 3, the expanding apparatus 4 and the bushing apparatus 7 in addition to those conventional in the art.
Example two
The present embodiment provides a laser grooving apparatus 3, which can be used in the first embodiment, and is disposed at a laser grooving station, and a jig stage on the laser grooving station is a grooving jig stage 301.
As shown in fig. 5, the laser grooving device 3 includes a laser disposed on the frame 1, and the specific mounting structure of the laser is conventional in the art, and will not be described herein. After the connecting rod is positioned and clamped, the laser head 305 of the laser firstly cuts one side of the big head inner hole, and after the completion, the laser head 305 is displaced and then cuts the other side of the big head inner hole.
Referring to fig. 4, the grooving jig 301 is rotatably provided with a small-head pad 302, and the axis of the pad shaft is vertical, and a plurality of small-head positioning piles 303 are provided on the small-head pad 302 around the pad shaft; the pile body abdication channel on the grooving clamp platform 301 is in a groove shape, the pile body abdication channel is defined as a big head abdication groove, big head positioning pins 304 and big head pressing components are arranged on two sides of the big head abdication groove, isosceles triangle arrangement is formed between a backing plate rotating shaft and the two big head positioning pins 304, and the sum of the distance between the two big head positioning pins 304 and the diameter of the two big head positioning pins is smaller than the diameter of a big head hole of a connecting rod. It is easy to understand that, the axis of the pad shaft passes through the plate surface of the small-head pad 302, and the grooving fixture platform 301 is provided with a rotation driving unit for driving the small-head pad 302 to rotate around the pad shaft, and the pad shaft may be fixedly connected with the lower plate surface of the small-head pad 302 and the pad shaft is connected with the output end of the rotation driving unit, and the rotation driving unit may be designed by a motor and a speed reducer, which are easy for those skilled in the art and are not described in detail herein.
The small-head positioning piles 303 are used for positioning the small head of the connecting rod, and are adapted to the small-head hole of the connecting rod, that is, each small-head positioning pile 303 has a small-head arc-shaped positioning surface for abutting against the inner wall of the small-head hole of the connecting rod, for example, each small-head positioning pile 303 may be a cylindrical pile, the diameter of which is the same as that of the small-head hole of the connecting rod, and in other embodiments, the small-head positioning piles 303 may also adopt the structure of the large-head positioning pile 801, that is, each small-head positioning pile 303 is also in the shape of a double-blade axe. The diameters of the arc-shaped positioning surfaces of the small heads can be set to be unequal, so that the laser grooving device 3 can adapt to laser grooving processing of connecting rods with different small head hole diameters.
As one embodiment, the spacing between each small-end positioning pile 303 and the rotating shaft of the backing plate may be unequal, and by driving the small-end backing plate 302 to rotate, different small-end positioning piles 303 are opposite to the large-end yielding grooves, so that the laser grooving device 3 can adapt to the laser grooving of the connecting rod with different center distances (the spacing between the center of the big-end hole of the connecting rod and the center of the small-end hole of the connecting rod).
In other embodiments, some small-end positioning piles 303 may be provided with the same specification, for example: each small-head positioning pile 303 comprises two first small-head positioning piles 303 and two second small-head positioning piles 303, and the diameters of small-head arc-shaped positioning surfaces of the first small-head positioning piles 303 and the second small-head positioning piles 303 are different, so that the small-head positioning pile is applicable to laser grooving processing of connecting rods with the diameters of two small-head holes. Further, the distance between the two first small-head positioning piles 303 and the rotating shaft of the backing plate is unequal, and the distance between the two second small-head positioning piles 303 and the rotating shaft of the backing plate is unequal, so that the laser grooving process for the connecting rod with each small-head hole diameter is applicable to the laser grooving process for the connecting rod with two center distance specifications. Preferably, the two first small-head positioning piles 303 and the backing plate rotating shaft are arranged along the same line, and the backing plate rotating shaft is located between the two first small-head positioning piles 303, and likewise, the two second small-head positioning piles 303 and the backing plate rotating shaft are arranged along the same line, and the backing plate rotating shaft is located between the two second small-head positioning piles 303.
It can be seen that, the above-mentioned laser grooving device 3 adopts rotatable setting small head pad 302 on grooving anchor clamps platform 301 and arranges a plurality of small head locating piles 303 on small head pad 302 for this laser grooving device 3 can be applicable to the laser grooving processing of the connecting rod of multiple specification, and production flexibility is great, reducible equipment cost has saved the operation of frequently changing positioning anchor clamps moreover, improves production efficiency effectively, reduces intensity of labour.
Further optimize the structure of above-mentioned laser grooving device 3, two big head compress tightly the subassembly and all include a big head briquetting and be isosceles triangle arrangement between two big head briquetting and the backing plate pivot, every big head briquetting has the pressure that is suitable for pressing to lean on the big head side of connecting rod and leans on the inclined plane and be connected with and be used for driving it to press the inclined plane and lean on or keep away from the big head briquetting drive unit of connecting rod. The two pressing inclined planes are respectively pressed against the side edges of the large end of the connecting rod, so that radial acting force and axial acting force can be applied to the large end of the connecting rod at the same time, the directions of the two groups of radial acting forces are opposite, the radial clamping effect on the large end of the connecting rod is ensured, the supporting force of the grooving clamp table 301 on the large end of the connecting rod is matched with the two groups of axial acting forces, and the axial compression effect on the large end of the connecting rod can be ensured; the big end pressing assembly is matched with the small end positioning pile 303, so that the effective limiting and clamping effect on the connecting rod can be ensured. Further preferably, for driving the big-end press block, the big-end press block can be driven to do linear reciprocating motion along the direction perpendicular to the table surface of the grooving clamp table 301 by the big-end press block driving unit, so that the big-end press block presses the big end of the connecting rod or is separated from the big end of the connecting rod; alternatively, the following preferred embodiments are employed: the big head press block is hinged on the grooving clamp platform 301, the hinge shaft is axially parallel to the table surface of the grooving clamp platform 301, the big head press block driving unit is provided with a telescopic driving rod which is axially perpendicular to the table surface of the grooving clamp platform 301, the telescopic driving rod is connected with the big head press block, the connecting points of the driving rod and the pressing leaning inclined plane are arranged on two sides of the hinge shaft, and the big head press block driving unit can adopt conventional linear driving equipment such as a hydraulic cylinder or an air cylinder, and the telescopic driving rod of the big head press block driving unit is hinged with the big head press block.
Example III
The present embodiment provides a breaking device 4, which can be used in the first embodiment, and is disposed at a breaking station, and a clamp table on the breaking station is a breaking clamp table 401.
As shown in fig. 6, the connecting rod breaking device 4 includes a breaking fixture platform 401 and a breaking head installed above the breaking fixture platform 401 by a breaking head lifting mechanism, and the breaking head can be a conventional breaking head, in this embodiment, a breaking head with better use effect is provided:
the expansion breaking head comprises an expansion breaking mounting plate 402, an expansion breaking judging sleeve 403, an expansion breaking sleeve 404 and an expansion breaking pull rod 405, wherein the expansion breaking sleeve 404 and the expansion breaking judging sleeve 403 can be assembled into an expansion breaking sleeve matched with a big end hole of a connecting rod, and are preferably of semi-cylindrical structures, and further preferably, as shown in fig. 6, the outer walls of the expansion breaking sleeve 404 and the expansion breaking judging sleeve 403 are of stepped shaft structures, the diameter of a small-diameter section at the bottom is basically the same as the diameter of the big end hole of the connecting rod, and the height of the small-diameter section at the bottom is preferably the same, so that a large-diameter section above the small-diameter section at the bottom can be abutted against the upper plane of the connecting rod to be processed, the vertical positioning clamping effect can be achieved on the connecting rod, and the stability of horizontal relative movement between two parts (the connecting rod body and the big end cover) of the connecting rod in the expansion breaking process is ensured. The expansion judging sleeve 403 is fixedly installed on the expansion mounting plate 402, and the expansion judging sleeve 404 is horizontally slidably installed on the expansion mounting plate 402; further preferably, the expansion sleeve 404 is mounted on a movable platform that is horizontally slidably mounted on the expansion mounting plate 402, such as by providing a horizontal rail on the expansion mounting plate 402, as will be readily apparent to those skilled in the art, and the specific structure is omitted herein. The expansion breaking pull rod 405 is used for driving the expansion breaking sleeve 404 to relatively displace relative to the expansion judging sleeve 403, as shown in fig. 6, the expansion breaking pull rod 405 is inserted into the inner cavity of the expansion breaking sleeve and has a wedge-shaped surface matching structure with the expansion judging sleeve 403, and a pull rod driving mechanism is arranged on the expansion breaking mounting plate 402 or the frame 1, and is preferably a linear driving device with a telescopic driving shaft which is vertical in the axial direction, such as a cylinder, a hydraulic cylinder and the like; the wedge surface in the wedge surface matching structure is preferably a conical surface with a narrow upper part and a wide lower part, and the expansion sleeve 404 can be driven to slide horizontally relative to the expansion sleeve 403 by pulling the pull rod 405 upwards, so as to act on the wall of the big end hole of the connecting rod.
As a preferred embodiment, as shown in fig. 7, a large-head square positioning groove 4011 adapted to a large-head of a connecting rod and a small-head square positioning groove 4012 adapted to a small-head of the connecting rod are arranged on the expanding clamp table 401, a pallet abdication channel on the expanding clamp table 401 is formed between the two square positioning grooves, and a corresponding pile body abdication channel is formed at the bottom of the large-head square positioning groove 4011. The big end square positioning groove 4011 and the small end square positioning groove 4012 are vertically upwards provided with notches, the cross section of the groove is square, the groove width of the big end square positioning groove 4011 is equal to the outer circle diameter of the big end of the connecting rod (preferably, clearance fit), the groove width of the small end square positioning groove 4012 is equal to the outer circle diameter of the small end of the connecting rod, therefore, before the expansion, the big end square positioning groove 4011 and the small end square positioning groove 4012 can be used for preliminarily positioning the connecting rod, in addition, the movement of the connecting rod along the groove width direction can be limited in the expansion process, and the machining precision is improved. Preferably, the small-head square positioning groove 4012 is a through groove with two ends being through, so that the small head of the connecting rod can slide in the groove, and under the matching of the step shaft step surface of the expanding and breaking sliding sleeve 404 and the groove bottom of the small-head square positioning groove 4012, the outer circular surface of the large head of the connecting rod is larger than the groove width of the small-head square positioning groove 4012, so that the connecting rod body can be prevented from falling out of the small-head square positioning groove 4012; one end of the big head square positioning groove 4011, which is close to the supporting plate abdication channel 101, is a through end, the other end is a non-through end, and the end wall is a vertical wall surface, and the non-through end of the big head square positioning groove 4011 can limit the connecting rod cover, especially under the cooperation of the expansion judging sleeve 403, the connecting rod cover is ensured to be kept static, and only the connecting rod body generates displacement. Therefore, the machining precision can be effectively improved through the matching of the two square positioning grooves; meanwhile, the expanded connecting rod body and the connecting rod cover are limited, so that the two parts are prevented from being dispersed and difficult to assemble, and the processing efficiency is improved. As can be easily understood, the above-mentioned large-head square positioning groove 4011 is the same as the small-head square positioning groove 4012 in the length direction, or, the small-head square positioning groove 4012 is located on the extension line of the large-head square positioning groove 4011, the two ends of the small-head square positioning groove 4012 are the ends of the small-head square positioning groove 4011, which are close to and far from the large-head square positioning groove 4011, and the two ends of the large-head square positioning groove 4011 are the ends of the small-head square positioning groove 4012, which are close to and far from the small-head square positioning groove 4012.
Further preferably, as shown in fig. 6, the expanding-breaking device 4 provided in this embodiment further includes a small-end expanding-breaking positioning pile 406, through which the small-end of the connecting rod can be positioned, especially, before expanding-breaking, through the initial positioning of the two square positioning slots, and through the cooperation of the small-end expanding-breaking positioning pile 406 and the expanding-breaking head, the small-end of the connecting rod and the large-end of the connecting rod can be respectively precisely positioned, so that the positioning precision of the connecting rod can be ensured. The small-head expansion judging pile 406 is preferably arranged on the movable table and is driven by the expansion breaking sleeve 404, and based on the structure, on one hand, the large end of the connecting rod and the small end of the connecting rod can be always positioned in the expansion breaking process, the expanded connecting rod body is ensured to move along the horizontal sliding direction of the movable table, so that the machining precision is ensured, meanwhile, the connecting rod body after expansion breaking is prevented from being disturbed due to the inertia effect, and the connecting rod body is matched with the small-head square positioning groove 4012 to limit the movement of the connecting rod body; on the other hand, after the expansion is broken, the expansion breaking sleeve 404 and the small-head expansion breaking positioning pile 406 are driven to return through the movable table, namely, the connecting rod body is driven to return to be spliced with the connecting rod cover, so that the subsequent automatic blanking and bolt screwing procedure operation are facilitated, and the processing efficiency can be remarkably improved.
Further preferably, the distance between the expanding sleeve 403 and the small-head expanding-breaking positioning pile 406 is adjustable, for example, a small-head expanding-breaking positioning pile 406 may be fixed on the movable table by bolts or the like, and a kidney-shaped groove is formed on the movable table along the sliding direction. The space between the expanding sleeve 403 and the small-head expanding positioning pile 406 is adjustable, so that the positioning processing of the connecting rods with different center distances can be adapted, and the production flexibility is improved.
Example IV
The present embodiment provides a bushing apparatus 7, which can be used in the first embodiment, and is disposed at a bushing pressing station, and a jig table at the bushing pressing station is a bushing pressing jig table 701.
As shown in fig. 8, the bushing apparatus 7 includes a bushing platen 702, a bushing pressing rod 703 disposed above the bushing platen 702, and a finishing rod 704 disposed below the bushing platen 702, wherein the bushing platen 702 is provided with a bushing clamp, and the bushing clamp, the bushing pressing rod 703, and the finishing rod 704 may all employ related devices conventional in the art, and the specific structure thereof will not be described herein; the link bush pressing apparatus 7 is further provided with an automatic feed rail for automatically feeding the bush, and the bush fed is pressed into the small-end hole of the link by the bush pressing lever 703 after being held by the bush pressing lever 703, and then the bush hole is finished by the finishing lever 704. The bushing clamping table 701 is arranged beside the bushing pressing table 702 and is connected with the bushing pressing table 702 through a manipulator; the manipulator has the functions of connecting the bushing pressing fixture platform 701 and the bushing pressing workbench 702, transferring the connecting rod between the bushing pressing fixture platform 701 and the bushing pressing workbench 702, specifically, after the material conveying support plate 8 sinks to place the connecting rod to be processed on the bushing pressing fixture platform 701, clamping the connecting rod to be processed by the manipulator, then conveying the connecting rod to the bushing pressing workbench 702 for clamping processing, after the processing is completed, transferring the connecting rod to the bushing pressing fixture platform 701 by the manipulator, and floating the processed connecting rod to the next station by the material conveying support plate 8.
The bushing pressing device 7 provided by the embodiment is characterized in that a bushing pressing fixture platform 701 is arranged beside a bushing pressing workbench 702, a supporting plate yielding channel is arranged on the bushing pressing fixture platform 701 to be matched with a material conveying supporting plate 8, a pile body yielding channel is arranged on the bushing pressing fixture platform to be matched with a big-end positioning pile 801, automatic feeding and discharging of a connecting rod bushing pressing process is realized, the connecting rod bushing pressing process can be perfectly connected with an upstream process and a downstream process, the connecting rod bushing pressing process can be integrated with an expanding machine, the production efficiency is effectively improved, and the occupied space of equipment is saved.
Further preferably, as shown in fig. 9, the bushing pressing fixture platform 701 is further provided with a small-end positioning block 705, and the small-end positioning block 705 is located on one side of the pallet yielding channel, which is far away from the pile yielding channel. The small-head positioning block 705 is used for positioning the small head of the connecting rod, so that the manipulator is convenient to clamp the connecting rod, and is matched with the small-head hole of the connecting rod, and the structure of the small-head positioning pile 303 provided by the second embodiment can be adopted, so that the description is omitted here. Further preferably, as shown in fig. 9, the small head supporting plate 706 is rotatably mounted on the bushing pressing jig table 701, and the axial direction of the supporting plate rotating shaft is vertical, and the small head positioning blocks 705 are plural and are arranged on the small head supporting plate 706 around the backing plate rotating shaft. The structure of the small head supporting plate 706 and the assembly structure of the small head positioning block 705 are the same as those of the second embodiment, and will be omitted here.
The small head supporting plate 706 is rotatably arranged on the bushing pressing fixture platform 701, and the small head positioning blocks 705 are arranged on the small head supporting plate 706, so that the bushing pressing fixture platform 701 can be suitable for supporting and positioning of connecting rods with various specifications, the production flexibility is high, the equipment cost can be reduced, and the production efficiency is effectively improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. The utility model provides a connecting rod expanding machine, includes frame, its characterized in that: a turntable bracket is rotatably and liftably arranged on the frame, a plurality of material conveying supporting plates are outwards convexly arranged on the periphery of the turntable bracket, each material conveying supporting plate is annularly arranged along the periphery of the turntable bracket, a large-head positioning pile in the shape of a double-blade axe is arranged on each material conveying supporting plate, one circular arc end of the large-head positioning pile is fixed on the edge of the corresponding material conveying supporting plate, and the other circular arc end of the large-head positioning pile extends out of the material conveying supporting plate;
the machine frame is provided with a loading and unloading station, a laser grooving station, a breaking station, a bolt assembling station, a bolt tightening station and a bushing pressing station, wherein each station is circumferentially arranged around the turntable bracket along the turntable bracket, each station is respectively provided with a corresponding fixture platform and a processing device, and each fixture platform is provided with a supporting plate abdication channel suitable for lifting and passing of the material conveying supporting plate and a pile body abdication channel communicated with the supporting plate abdication channel and suitable for lifting and passing of the large-head positioning pile;
the clamp table on the laser grooving station is a grooving clamp table, a small-head cushion plate is rotatably arranged on the grooving clamp table, the axial direction of a cushion plate rotating shaft is vertical, and a plurality of small-head positioning piles are arranged on the small-head cushion plate around the cushion plate rotating shaft; the pile body abdication channel of the grooving clamp table is provided with big head positioning pins and big head pressing assemblies at two sides, the backing plate rotating shaft and the two big head positioning pins are arranged in an isosceles triangle, and the sum of the distance between the two big head positioning pins and the diameter of the two big head positioning pins is smaller than the diameter of a big head hole of the connecting rod;
the distance between each small-head positioning pile and the backing plate rotating shaft is unequal; and/or each small-head positioning pile is provided with a small-head arc-shaped positioning surface for abutting against the inner wall of the small-head hole of the connecting rod, and the diameters of the small-head arc-shaped positioning surfaces are different;
the two big head pressing assemblies comprise a big head pressing block and are arranged in an isosceles triangle manner between the two big head pressing blocks and the backing plate rotating shaft, and each big head pressing block is provided with a pressing inclined surface suitable for pressing the side edge of the big head of the connecting rod and is connected with a big head pressing block driving unit for driving the pressing inclined surface to press against or be far away from the big head of the connecting rod.
2. The tie-bar expansion machine of claim 1, wherein: the clamp table on the expanding station is an expanding clamp table, a big head square positioning groove matched with a big head of a connecting rod and a small head square positioning groove matched with a small head of the connecting rod are arranged on the expanding clamp table, and the support plate abdicating channel on the expanding clamp table is formed between the two square positioning grooves and corresponds to the pile body abdicating channel formed at the bottom of the big head square positioning groove.
3. The tie-bar expansion machine of claim 2, wherein: the device comprises a bulge end arranged above a bulge clamp table through a bulge end lifting mechanism, wherein the bulge end comprises a bulge mounting plate, a bulge judging sleeve, a bulge acting sleeve wedge-shaped surface matched bulge acting pull rod and a small-head bulge locating pile for locating a small-head of a connecting rod, the bulge judging sleeve is fixed on the bulge mounting plate, the bulge acting sleeve and the small-head bulge locating pile are all arranged on a movable table, and the movable table is horizontally arranged on the bulge mounting plate in a sliding manner.
4. A connecting rod expansion machine as claimed in claim 3, wherein: the interval between the expansion sleeve and the small-head expansion positioning pile is adjustable.
5. The tie-bar expansion machine of claim 2, wherein: one end of the big-end square positioning groove, which is close to the corresponding support plate abdication channel, is a through end, the other end is a non-through end, and the end wall is a vertical wall surface.
6. The tie-bar expansion machine of claim 1, wherein: the clamp table on the bushing pressing station is a bushing pressing clamp table, and the bushing pressing device arranged at the bushing pressing station comprises a bushing pressing workbench, a bushing pressing rod arranged above the bushing pressing workbench and a finishing rod arranged below the bushing pressing workbench, wherein the bushing pressing clamp table is arranged beside the bushing pressing workbench and is connected with the bushing pressing workbench through a manipulator.
7. The tie-bar expansion machine of claim 1, wherein: and each material conveying supporting plate is also provided with a rod body cushion block.
8. The tie-bar expansion machine of claim 1, wherein: and each material conveying supporting plate is also provided with at least one group of positioning screws used for abutting against the side edges of the rod bodies of the connecting rods, and the circle centers of the circular arc ends of the big-end positioning piles and the corresponding groups of positioning screws are arranged in an isosceles triangle.
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| CN201810796019.XA CN108907737B (en) | 2018-07-19 | 2018-07-19 | Connecting rod expanding machine |
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|---|---|---|---|
| CN201810796019.XA CN108907737B (en) | 2018-07-19 | 2018-07-19 | Connecting rod expanding machine |
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| CN108907737B true CN108907737B (en) | 2023-11-17 |
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| CN112192043A (en) * | 2020-10-09 | 2021-01-08 | 吉林大学 | Automatic connecting rod grooving mechanism for machining connecting rod cracking groove |
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