CN112171252A - Multifunctional assembly rotary table with fixed-moment tightening mechanism and assembly method - Google Patents
Multifunctional assembly rotary table with fixed-moment tightening mechanism and assembly method Download PDFInfo
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- CN112171252A CN112171252A CN202010936955.3A CN202010936955A CN112171252A CN 112171252 A CN112171252 A CN 112171252A CN 202010936955 A CN202010936955 A CN 202010936955A CN 112171252 A CN112171252 A CN 112171252A
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- 229910052802 copper Inorganic materials 0.000 description 11
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- 238000004519 manufacturing process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
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- 238000003466 welding Methods 0.000 description 2
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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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
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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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/006—Holding or positioning the article in front of the applying tool
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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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/065—Arrangements for torque limiters or torque indicators in screw or nut setting machines
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Abstract
The invention provides a multifunctional assembly rotary table with a fixed-moment screwing mechanism and an assembly method, wherein the multifunctional assembly rotary table comprises a rotary workbench, a workpiece supporting tray assembly, a material rack placing tray and a screwing mechanism, the rotary workbench comprises a functional platform and a functional supporting piece, and the lower end of the functional supporting piece is arranged on the functional platform; the workpiece supporting tray assembly comprises a fixed seat, the fixed seat is arranged on the functional platform, and the fixed seat is used for fixing a workpiece to be processed; the material rack placing disc is installed at the upper end of the function supporting piece, the tightening mechanism is installed on the function supporting piece and used for assembling the machined workpieces, the fixing seats can select fixing seats with different structures according to different machined workpieces, the fixing seats are installed on the working table top, and the tightening mechanism can carry out assembling operation on the machined workpieces.
Description
Technical Field
The invention relates to the technical field of mechanical assembly, in particular to a multifunctional assembly rotary table with a fixed-moment screwing mechanism and an assembly method.
Background
During the assembly of the brake component, a plurality of operations such as two-sided overturning, brake drum assembling, bolt penetrating, bolt pressing, nut screwing and the like need to be carried out on the assembly component, the process is high in labor intensity of workers and has certain potential safety hazards, especially, the danger of collision and rolling easily occurs in the process of two-sided overturning and assembly overturning of the component, and the tests are carried out on the strength and the endurance of the workers and the assembly technology.
When the bolt is pressed and installed, the operation is carried out manually under the press, which is very dangerous and has low production efficiency; the distance between the assembly and the processing site is long, the processes are discontinuous, and the assembly needs to be carried and stored; the number of the personnel participating in the production is large, the labor intensity of workers is high, and the working efficiency is low.
Patent document CN205363229U discloses an automatic hub brake drum assembling and hub assembly processing production line, in which a hub blanking bin, a quintuplet turnover machine, a transfer machine, a prepress machine, a bolt press machine, a hub conveying line, a joint robot, an angle positioning workbench, a brake drum blanking bin, an assembly press machine, an assembly conveying line, a tightening machine, an assembly feeding and discharging truss manipulator, a machine tool, a cleaning machine, a dynamic balancing feeding and discharging truss, a material shaving table, a blanking table and a coding machine are sequentially arranged to realize continuous transmission among working procedures.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a multifunctional assembly rotary table with a fixed-moment screwing mechanism and an assembly method.
According to the invention, the multifunctional assembly rotary table with the fixed-moment screwing mechanism comprises:
the rotary workbench comprises a functional platform and a functional supporting piece, wherein the lower end of the functional supporting piece is arranged on the functional platform;
the workpiece supporting tray assembly comprises a fixed seat, the fixed seat is arranged on the functional platform, and the fixed seat is used for fixing a workpiece to be processed;
the material rack placing disc is arranged at the upper end of the functional support piece;
and the tightening mechanism is arranged on the functional support piece and used for assembling the machined workpiece.
Preferably, the processed workpiece moves circumferentially to a position to be assembled below the tightening mechanism under the transmission of the rotary workbench, and the tightening mechanism adjusts the height distance between the tightening mechanism and the processed workpiece in a lifting mode so as to apply a tightening operation to the processed workpiece.
Preferably, the tightening mechanism assembles the work piece in a flexible manner.
Preferably, during the process of assembling the workpiece by the tightening mechanism, the torque force between the workpiece and the tightening head assembly is adjusted through the flexible assembly of the tightening shaft and the radial displacement of the tightening head assembly can be limited.
Preferably, the tightening mechanism is provided with a second power assembly which can enable the workpiece to be assembled to the preset torque in the process of assembling the workpiece by the tightening mechanism.
Preferably, after the workpiece is assembled to the preset torque, the workpiece can be automatically driven to be corrected to the designated position through the functional assembly of the second power assembly.
Preferably, during the process of lifting and descending of the tightening mechanism, the buffer limiting component can limit the movement stroke of the tightening mechanism and can buffer the tightening mechanism when the tightening mechanism moves to a limiting point towards a processed workpiece.
Preferably, the fixing base can be detachably arranged on the functional platform through the lower tray, and can be selected between a fixing mode and an adaptive adjusting mode, wherein the lower tray is fastened on the functional platform through the connecting piece in the fixing mode, and the fixing base can be radially displaced under the driving of the tightening mechanism in the adaptive adjusting mode so that the workpiece can be corrected to the centering position.
Preferably, the fixing seat is further provided with an upper tray matched with the lower tray, the upper tray is used for matching different workpieces and can guide a screwing assembly in the screwing mechanism to find a centering position.
According to the invention, the multifunctional assembly rotary table with the fixed-moment screwing mechanism is adopted, and the assembly method based on the multifunctional assembly mechanism comprises the following steps:
the method comprises the following steps: controlling the assembly component to be centered and positioned with the machined workpiece;
step two: controlling the assembling component to move to an assembling position with the processed workpiece;
step three: and controlling the assembly to operate, and when the assembly torque reaches a preset torque, controlling the assembly to decelerate until the preset torque is reached.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention can be suitable for assembling operation of various processed workpieces, has wide processing range, can select the rotation angle of the rotary table for one rotation according to different carrying stations, enables the processed workpieces to sequentially rotate to the lower part of the tightening mechanism, enables the tightening head to be positioned with the processed workpieces in a self-adaptive manner through the structural arrangement of the fixed seat and the matching of the tightening mechanism, and greatly improves the assembling accuracy and efficiency.
2. The rotary table solves the problem of the rotation of the working table only through the connecting structure of the turntable bearing, the working table and the base, has simple structure, and the driving mechanisms are all hidden in the base, so that the rotary table has attractive appearance and strong practicability.
3. The positioning shaft in the tightening assembly is matched with the compression spring to realize flexible centering of the processed workpiece and the tightening head, so that the device is protected from being damaged, the centering speed is high, and the assembly efficiency is improved.
4. According to the invention, one or more layers of material discs can be arranged according to actual requirements for placing the spare parts, and the material discs divide the material discs into a plurality of areas through the partition sections, so that the spare parts are placed in a classified manner, the taking speed of the spare parts in the operation process is greatly improved, the assembly efficiency is improved, meanwhile, workers are prevented from taking the spare parts back and forth, and the time is saved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic perspective view of a rotary worktable;
FIG. 4 is a schematic side view of a rotary table;
FIG. 5 is a side schematic view of the tightening mechanism;
FIG. 6 is a perspective view of the tightening mechanism;
FIG. 7 is a side cross-sectional schematic view of the tightening shaft flexible assembly and the tightening assembly;
FIG. 8 is a schematic structural view of a fixing base according to an embodiment;
FIG. 9 is a schematic top view of the mounting base in one embodiment;
FIG. 10 is a side cross-sectional view of an embodiment of the anchor block;
FIG. 11 is a perspective view of the tightening sleeve;
FIG. 12 is a schematic side cross-sectional view of a work piece in one embodiment.
The figures show that:
Workpiece support pallet assembly 2 first bearing 23 tightening assembly 44
3 second bearing 24 constant head tank 45 of work or material rest placing tray
Indirect pallet limiting mechanism 47 of limiting ring 26 of first connecting plate 5
Second connecting plate 6 third connecting plate 27 tray fixing screw 48
Spacing pin 49 of tightening head assembly 28 of air cylinder 7
Door latch 51 of floating joint 9 positioning shaft 30
Mounting hole 53 for tightening head of slide 32 of worktable 11
Second limiting screw 63 of second power assembly 42 of upper tray 21
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a multifunctional assembly rotary table with a fixed-moment screwing mechanism, which comprises a rotary working table 1, a workpiece supporting tray assembly 2, a material rack placing tray 3 and a screwing mechanism 4, wherein the rotary working table 1 comprises a functional platform and a functional supporting piece, the lower end of the functional supporting piece is arranged on the functional platform, the workpiece supporting tray assembly 2 comprises a fixed seat, the fixed seat is arranged on the functional platform and is used for fixing a processed workpiece, the material rack placing tray 3 is arranged at the upper end of the functional supporting piece, the screwing mechanism 4 is arranged on the functional supporting piece and is used for assembling the processed workpiece, the screwing mechanism 4 has lifting and rotating functions and can assemble the processed workpiece arranged on the fixed seat, in a preferred embodiment, the functional platform comprises a working table surface 11 and a base 13, the functional support is a support column 12.
Specifically, as shown in fig. 5-7, the tightening mechanism 4 comprises a lifting assembly 41, a second power assembly 42, a tightening shaft flexible assembly 43 and a tightening assembly 44, and in a preferred embodiment, the present invention further provides a first connecting plate 5 and a second connecting plate 6, wherein one end of the first connecting plate 5 is mounted on the top end of the support column 12, the lifting assembly 41 is mounted on the other end of the first connecting plate 5, the first connecting plate 5 serves to fixedly support the lifting assembly 41, and the lifting assembly 41 functions to apply a constant pressing force to the tightening assembly 44 during tightening, and to rapidly reset the tightening assembly 44 after tightening is in place.
Specifically, the tightening mechanism 4 assembles the workpiece in a flexible manner, and during the process of descending towards the workpiece by the tightening mechanism 4, the workpiece is firstly contacted and positioned in a centering position by the provided positioning assembly, and then the workpiece is assembled by the provided tightening head assembly by continuing descending, wherein the positioning assembly comprises the tightening assembly 44 and the fixed seat, and the positioning is realized by driving the positioning shaft 30 in the tightening assembly 44 to be matched with the fixed seat.
Furthermore, as shown in fig. 1, 5 and 6, the lifting assembly 41 includes a cylinder 7 and a cylinder fixing plate 8, one end of the cylinder fixing plate 8 is connected to the first connecting plate 5, the cylinder 7 is installed at the other end of the cylinder fixing plate 8, the cylinder 7 is in driving connection with the second connecting plate 6 through the floating joint 9, so as to drive the assembly to move up and down, the sliding rail 31 is installed on the cylinder fixing plate 8, the sliding block 32 matched with the sliding rail 31 is installed on the second connecting plate 6, when the cylinder 7 acts to drive the cylinder rod to do extending or retracting movement, the second connecting plate 6 can follow the cylinder rod to move synchronously, and meanwhile, the sliding block 32 slides along the sliding rail 31, the sliding rail 31 plays a guiding role, and the guiding rail 31 plays a guiding role in the up and down movement of the tightening mechanism 4.
Specifically, during the process of lifting and lowering the tightening mechanism 4, the movement stroke of the tightening mechanism 4 can be limited by the buffer limiting component and the tightening mechanism 4 can be buffered when the tightening mechanism 4 moves to the limiting point towards the processed workpiece. The buffering limiting assembly comprises an air cylinder fixing plate 8 and a second limiting screw 63, the second limiting screw 63 mounted on the air cylinder fixing plate 8 is used for limiting and has a protection effect by means of a buffer 60, so that the whole assembly moves more stably, and the precision of the device is improved.
Specifically, as shown in fig. 1, the rack placing tray 3 is mounted at the upper end of a support column 12, the support column 12 is used for fixing the support rack placing tray 3, the support rack placing tray 3 is used for storing spare parts or tools, and is convenient for workers to take, the lower end of the support column 12 is mounted on a base 13, the workpiece support tray assembly 2 includes a fixing seat, which is used for fixing and positioning the machined workpiece, and the fixing seat is mounted on a working table 11, in a preferred embodiment, as shown in fig. 2, the diameter of the working table 11 is 1700 mm, after the machined workpiece is mounted on the working table 11 along the circumferential direction, the machined workpiece is integrally formed into an annular arrangement, wherein the distance between the outer sides of two machined workpieces mounted on opposite sides of the working table 11 is 1808 mm.
Further, table surface 11 can drive the work piece on the fixing base and carry out rotary motion, wherein is provided with a plurality of mounting holes on table surface 11 for the fixed of fixing base, after the fixing base is fixed, install the work piece again and assemble and processing operation on the fixing base. In practical application, a matched fixing seat is selected according to the structure of a machined workpiece, so that the machined workpiece can be effectively fixed and accurately positioned.
Specifically, the workpiece can move to the position to be assembled below the tightening mechanism 4 along the circumferential direction of the workbench surface 11 under the transmission of the rotary workbench 1, and the tightening mechanism 4 adjusts the height distance with the workpiece in a lifting manner so as to apply the tightening operation to the workpiece.
In a specific embodiment, the working table 11 of the present invention carries 12 assembly stations simultaneously, and can realize the compatibility of manual assembly and automatic assembly of a machine, and the working flow is as follows:
the rotary motor starts to operate to drive the working table top 11 to rotate by 30 degrees, an assembly station is switched, after the assembly station is switched, the manual assembly is manually realized in a manual assembly link, the automatic assembly link is used for assembling the automatic operation, if the screwing mechanism 4 is used for automatic assembly, and after the assembly is finished, a PLC in the control system receives signals. When manual assembly is adopted, after the assembly is completed, a button is manually pressed, a signal is given to the PLC, and after the PLC receives the two completion signals, the control system controls the working table 11 to rotate for 30 degrees again, and the working table is switched to the next assembly station to continue assembly operation.
Further, in a specific embodiment, the workpiece is the assembly of brake components in a safety device, such as the fixing of a brake drum and the assembly of components, the brake drum is of a barrel structure, the inner surface of the brake drum along the circumferential direction is uniformly provided with a plurality of rotation blocking ribs at intervals along the radial direction, and since the tightening mechanism 4 is a fully automatic mechanism, the processed brake drum needs to be positioned on the working table 11 to ensure that the tightening mechanism 4 is accurately positioned during automatic tightening operation, and a fixing seat is needed to ensure that the rotation blocking ribs of the brake drum are blocked to prevent the brake drum from rotating along with the tightening mechanism 4 during tightening. Meanwhile, for the convenience of workers in the process of installing other parts, the safety device shell also needs to be provided with a positioning mechanism on the installation table top.
Specifically, as shown in fig. 8 to 10, the fixing base includes an upper tray 36, a lower tray 37, and a positioning pin 38, the lower tray 37 functions to support the brake drum, and the safety device is always supported by the lower tray 37 during the assembly of the brake assembly. The upper tray 36 is used for positioning a machined workpiece, the outer circle of the upper tray is a finish machining face, the inner circle of the brake drum is positioned by using the outer circle, so that the central shaft of the safety device is positioned, the lower tray 37 is installed on the workbench surface 11, the upper tray 36 is installed on the lower tray 37, the positioning pin 38 is connected with the side face of the lower tray 37, the upper tray 36 extends out of a first boss 39 and a second boss 40 along the circumferential direction, a positioning groove 45 is formed between the first boss 39 and the second boss 40, and a rotation blocking rib of the brake drum is clamped into the positioning groove 45, so that the circumferential rotation blocking of the brake drum is realized. The housing of the safer is mounted on the brake drum, the central axis of which can be positioned by means of the brake drum, the circumferential positioning of the safer housing being realized by means of the positioning pins 38 placed on the outside. The workpiece support tray assembly 2 is a mechanism for completely positioning the safety device, and the positioning precision of the workpiece support tray assembly 2 in the process of rotating and switching the work station of the working table 11 is directly equal to that of the safety device.
Specifically, the fixing base can be detachably arranged on the functional platform through the lower tray 37, and can be selected between a fixing mode and an adaptive adjusting mode, wherein the lower tray 37 is fastened on the functional platform through a connecting piece in the fixing mode, when the fixing base can be radially displaced under the driving of the tightening mechanism 4 in the adaptive adjusting mode to correct a workpiece to a centering position, in practical application, the fixing base is arranged on the working platform 11 in two modes, corresponding to the fixing mode and the adaptive adjusting mode, and when the whole equipment meets the positioning accuracy requirement of safety device installation in rotation, the fixing mode is selected, and the lower tray 37 is directly connected with the working platform 11 through four tray fixing screws 48. When the whole equipment can not meet the requirement of positioning accuracy in rotation, a self-adaptive adjusting mode is selected, the indirect tray limiting mechanism 47 is utilized to roughly limit the position of the safety device, the safety device can move with the fixed seat within an allowable movement range, so that the fixed seat can be self-adaptively matched with the positioning of the assembly, and the liftable tightening mechanism 4 is utilized to insert the central positioning shaft 30 into the indirect tray positioning hole 46, so that the positioning accuracy of actual assembly requirements is met. Wherein, indirect tray stop gear 47 includes spacer pin 49, and the one end of spacer pin 49 is passed through the fix with screw on table surface 11, is provided with spacing hole on the tray 37 of lower floor, the other end clearance of spacer pin 49 is installed in spacing hole and lower floor's tray 37 can only radially move for spacer pin 49, but can not move along axial direction, and then has realized the self-adaptation centering adjustment under the driving of location axle 30.
In addition, as shown in fig. 8 and 9, if the diameter of the table top 11 is smaller, the positioning accuracy of the workpiece is high and the accuracy requirement of the apparatus can be satisfied under the same rotation angle accuracy, and in a preferred example, the accuracy requirement of the positioning shaft 30 is less than 3mm, and the upper tray 36 and the lower tray 37 may be directly fixed to the table top by screws.
In particular, the upper tray 36, which is matched to the lower tray 37, is also provided in the fixing base for matching different workpieces and for guiding the tightening unit 44 provided in the tightening mechanism 4 to find a centering position.
When the working table 11 is large, the positioning accuracy of the working station is enlarged under the condition of the same rotation angle accuracy, and the requirement of screwing the equipment is exceeded, if the upper and lower trays are directly connected with the working table 11, the requirement of deviation of the positioning shaft 30 cannot be met, and then the fixing seat is required to be provided with the flexible adjusting and centering function, in a preferred embodiment, as shown in fig. 10, the limiting pin 49 is directly arranged on the working table 11, and a kidney-shaped hole is formed in the part of the lower tray 37 connected with the limiting pin 49. Therefore, the tray can be limited to a certain extent, and can be displaced within a small range, so that the fixing seat can be positioned in a self-adaptive matching manner to assemble the components, and the centering with equipment is realized.
Specifically, an indirect-type tray positioning hole 46 is formed in the middle of the tray, a large chamfer of 60 degrees is formed in the upper edge of the hole, when the tray needs to be positioned, the positioning shaft 30 can be guided to be inserted into the indirect-type tray positioning hole 46 when the positioning shaft 30 is driven by the air cylinder 7 to move, the positioning shaft 30 can drive the tray to move in the guiding process so as to perform secondary positioning on the tray, and the positioning precision of a workpiece to be machined can meet the requirement of the tightening shaft 25.
Specifically, as shown in fig. 1 and fig. 3, the work table 11 is installed above the base 13, the lower end of the support column 12 is connected to the base 13, and the upper end of the support column 12 passes through the work table 11 and extends above the work table 11 to be connected to the rack placing tray 3.
Specifically, the tray 3 is placed to the work or material rest includes one or more layers of trays, the trays are sleeved on the supporting columns 12 through bearings, when multiple layers of trays are arranged, the multiple layers of trays are respectively arranged at intervals in sequence along the direction away from the worktable 11, in a preferred embodiment, the trays are arranged in two layers, as shown in fig. 3, the tray 3 is placed to the work or material rest includes an upper layer tray 21 and a lower layer tray 22, the lower layer tray 22 and the upper layer tray 21 are respectively sleeved on the supporting columns 12 through second bearings 24 and first bearings 23 at intervals in sequence along the direction away from the worktable 11, the supporting columns 12 play a role of supporting and installing the lower layer tray 22 and the upper layer tray 21, the lower layer tray 22 are used for placing various spare parts, the convenience is brought to the working personnel to take at any time, because the middle parts of the upper layer tray 21 and the lower layer tray 22 are respectively installed on the supporting columns 12 through, the rotary movement of 360 degrees can be carried out, so that the worker can rotate the material tray by hands at any time so as to quickly find out required parts and reduce the carrying cost. The whole appearance is circular, and occupation of land space is little, the outward appearance is graceful, space utilization is high.
Further, a plurality of evenly arranged partition sections are arranged on the upper-layer material disc 21 and the lower-layer material disc 22 respectively, the material discs are divided into a plurality of different areas, different parts can be placed in a classified mode, the speed of searching the parts by workers is increased, and the assembly efficiency is improved.
It should be noted that, in practical application, a layer of material tray may be disposed in the workpiece support tray assembly 2, or multiple layers may be disposed according to practical situations, and the material tray should be designed reasonably according to specific application scenarios, but when designing the material tray, the requirement of convenient operation of a worker is also taken into consideration.
Specifically, as shown in fig. 1, fig. 3 and fig. 4, the rotary worktable 1 further includes a first motor 16, a speed reducer 17 and a turntable bearing 19, the upper portion of the inner ring of the turntable bearing 19 is connected to the worktable 11, the lower portion of the outer ring of the turntable bearing 19 is mounted on the base 13, the inner ring of the turntable bearing 19 is drivingly connected to the first motor 16 through the speed reducer 17, when the first motor 16 rotates, the speed reducer 17 can be driven to rotate so as to drive the inner ring of the turntable bearing 19 to drive the worktable 11 to rotate, in a preferred embodiment, the rotary worktable 1 further includes a gear member 18, the gear member 18 is drivingly connected to the speed reducer 17, when the speed reducer 17 rotates, the gear member 18 can be driven to rotate simultaneously, inner teeth matched with the gear member 18 are circumferentially disposed on the inner ring of the turntable bearing 19, the gear member 18 is engaged with inner teeth on the inner ring of the turntable bearing 19, can drive gear 18 when first motor 16 drives speed reducer 17 and rotates, and then gear 18 orders about the inner circle rotation of carousel bearing 19 and then drives table surface 11 and rotate, and the work piece of installing on table surface 11 this moment rotates along with table surface 11, can rotate appointed position according to the demand of reality to screw up mechanism 4 can be continuous to a plurality of work piece continuous processing, improve machining efficiency.
Specifically, in a preferred embodiment, base 13 is the cylindrical welding base, and it has two front and back base doors 52 to open on the welding base, and two base doors 52 set up respectively in the both sides of base 13, and base door 52 articulates on base 13 through hinge 50, and through knocker 51 control switch, the setting of base door 52 can conveniently be patrolled and examined and overhaul the machine of installing inside base 13.
Specifically, as shown in fig. 1, 5 and 6, the upper end of the tightening shaft flexible assembly 43 is mounted on the second power assembly 42, and the lower end of the tightening shaft flexible assembly 43 is connected to the tightening assembly 44, wherein one end of the second connecting plate 6 is mounted between the second power assembly 42 and the tightening shaft flexible assembly 43, and the other end of the second connecting plate 6 is drivingly connected to the lifting assembly 41.
Specifically, as shown in fig. 1, 5 and 6, the second power assembly 42 includes a second motor 10, a speed reducer 14 and a torque sensor 15, the workpiece can be assembled to a preset torque by the torque sensor 15 in the process of assembling the workpiece by the tightening mechanism 4, the second motor 10 adopts a servo motor, the tightening shaft flexible assembly 43 includes a tooth coupling 20, a tightening shaft 25 and a limit ring 26, the torque force between the workpiece and the tightening head assembly can be adjusted by the tooth coupling 20 in the tightening shaft flexible assembly 43 during the process of assembling the workpiece by the tightening mechanism 4, the radial displacement of the tightening head assembly can be limited by the limit ring 26, the second motor 10 is connected to the upper end of the speed reducer 14, the torque sensor 15 is installed to the lower end of the speed reducer 14, the tightening torque is accurately controlled by the torque sensor 15, the constant-torque assembly of the processed workpiece is realized, after the processed workpiece is assembled to a preset torque, the processed workpiece can be automatically driven to be corrected to a specified position through a functional component of a second power component (42), in a preferred example, the functional component is an encoder carried by a second motor 10, the position where the processing is about to stop is accurately controlled through the encoder, a reducer output shaft of a reducer 14 sequentially passes through a torque sensor 15 and a second connecting plate 6 and is in driving connection with a tightening shaft 25 through a tooth-shaped coupling 20, the tooth-shaped coupling 20 can ensure the flexibility of the tightening shaft 25 and can realize the flexible assembly of the assembly component, a limiting ring 26 is sleeved on the tightening shaft 25 and is connected with a cylinder fixing plate 8 through a third connecting plate 27, the limiting ring 26 is installed on the third connecting plate 27 through a limiting ring tightening screw 61, and a first limiting screw 62 is arranged on the limiting ring 26, the first limit screw 62 can adjust the gap between the tightening shaft 25 and the limit ring 26, and thus adjust the flexibility of the tightening shaft 25, and can play a role in limiting the tightening shaft 25 during movement, and can effectively limit the displacement of the tightening shaft 25 in the radial direction.
Specifically, as shown in fig. 1, 6 and 7, the tightening assembly 44 includes a tightening head assembly 28, a positioning shaft 30 and a compression spring 33, the tightening head assembly 28 is mounted on a tightening shaft 25, the lower end of the tightening shaft 25 is a hollow shaft, the upper end of the positioning shaft 30 is installed inside the tightening shaft 25 and is sleeved with a pressing spring 33, the lower end of the positioning shaft 30 passes through the tightening head assembly 28 and extends outside the tightening head assembly 28, when the cylinder 7 acts to drive the cylinder mandril to extend, the positioning shaft 30 can be driven to press the processed workpiece, the positioning shaft 30 further moves toward the interior of the tightening shaft 25 by the reaction force of the workpiece to compress and shorten the compression spring 33, the tightening shaft 25 is provided with a vent hole 34, in the reciprocating motion process of the positioning shaft 30, the pressure in the inner space of the positioning shaft 30 can be balanced, and the generation of air resistance is avoided.
In the actual assembly process, the tightening shaft 25 is firstly used for contacting with the workpiece to center the workpiece, and then the tightening sleeve 29 is contacted and attached with the workpiece. The compression spring 33 always exerts a biasing force on the positioning shaft 30, so that the positioning shaft 30 always flexibly contacts the workpiece during the descending process of the tightening head assembly 28, and the positioning shaft 30 gradually retracts into the tightening shaft 25 during the descending process of the tightening assembly 44.
Specifically, in practical use, a matched tightening head assembly 28 is reasonably selected according to the characteristics of the workpiece to meet the machining requirements of the workpiece, in a preferred example, the tightening head assembly 28 includes a tightening sleeve 29 and a tightening head 35, a tightening head mounting hole 53 is formed in the tightening sleeve 29, a plurality of the tightening heads 35 are uniformly mounted on the tightening head mounting hole 53 in the tightening sleeve 29, and in a variation, a plurality of the tightening heads 35 are non-uniformly mounted on the tightening sleeve 29. In practical use, the number of the tightening heads 35 can be one or more, and the tightening heads can be flexibly configured according to the requirement of an actual machined workpiece so as to meet the requirement of actual assembly.
The invention also provides an assembly method based on the multifunctional assembly mechanism, the multifunctional assembly mechanism is adopted for assembly, and the assembly principle is as follows:
firstly, the assembly and a workpiece are controlled to be centered and positioned: the worktable 11 rotates a station under the driving of the first motor 16, the workpiece is rotated to the lower part of the tightening mechanism 4, the control system controls the cylinder 7 to descend, the positioning shaft 30 firstly contacts with a tightening component on the workpiece, and the positioning shaft 30 performs centering positioning with the tightening component by using a chamfer cone.
Secondly, controlling the assembling component to move to an assembling position with the processed workpiece; the control system controls the cylinder 7 to continue to descend, the first motor 16 starts to rotate, the tightening head 35 is in contact with the surface of the tightening assembly during rotation, and the tightening head 35 is inserted into the tightening vacancy under the pressure of the cylinder 7 when the tightening head 35 is concentric with the tightening vacancy on the tightening assembly, so that the tightening head 35 is engaged with the tightening vacancy.
And finally, controlling the assembly to operate, and when the assembly torque reaches a preset torque, controlling the assembly to decelerate until the preset torque is reached. When the tightening head 35 is engaged with the tightening vacancy, the second motor 10 starts to rotate to tighten the tightening assembly with the workpiece, and when the torque sensor 15 detects that the tightening torque reaches the preset torque, the second motor 10 decelerates to rotate until the preset torque is reached to realize fixed torque. When the preset torque is reached, the angle of the copper nut is judged, and the angle is automatically adjusted to the designated position through the functional component of the second power component (42), so that the rotation-resisting screw hole arranged on the processed workpiece is aligned to the designated position.
In a specific embodiment, as shown in fig. 12, the workpiece is locked by the copper nut 54, the workpiece includes a finished cone 58 and a finished shell 59, wherein the finished shell 59 is provided with an assembly through hole, the mounting end of the finished cone 58 is mounted in the assembly through hole and locked by the copper nut 54, wherein the assembly through hole is sequentially provided with the rotation-resisting ring 56 and the disc spring 57, the copper nut 54 is provided with a copper nut through hole along the axis, the copper nut through hole can be used as a tightening vacancy or can be used for mounting the rotation-resisting screw 55, when the tightening assembly 44 enters the copper nut through hole in centering, the tightening operation is performed, when the tightening is performed to the preset torque, the functional component, such as the encoder, in the second power assembly (42) can enable the copper nut 54 to rotate again and then automatically adjust to the designated position, so that the copper nut through hole on the copper nut 54 is aligned with the rotation-resisting hole on the rotation ring 56, the anti-rotation screws 55 are installed, and the finished cone 58 and the finished shell 59 are screwed together.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. A multi-functional assembly revolving platform with decide moment tightening mechanism which characterized in that includes:
the rotary workbench (1) comprises a functional platform and a functional support piece, wherein the lower end of the functional support piece is arranged on the functional platform;
the workpiece supporting tray assembly (2) comprises a fixed seat, the fixed seat is arranged on the functional platform, and the fixed seat is used for fixing a workpiece to be processed;
the material rack placing disc (3) is arranged at the upper end of the functional support piece;
and the tightening mechanism (4) is arranged on the functional supporting piece and is used for assembling the processed workpiece.
2. The multifunctional assembly turret with fixed-pitch tightening mechanism according to claim 1, characterized in that the work piece is moved circumferentially by the transfer of the rotary table (1) to a station to be assembled below the tightening mechanism (4), and the tightening mechanism (4) is adjusted in height-wise distance from the work piece in an up-and-down manner to apply a tightening operation to the work piece.
3. The multi-function assembly turret with fixed-pitch tightening mechanism according to claim 1, wherein the tightening mechanism (4) assembles the work piece in a flexible manner.
4. The multi-function assembly turret with fixed-torque tightening mechanism according to claim 3, characterized in that during the assembly of the tightening mechanism (4) to the work piece, the torque between the work piece and the tightening head assembly is adjusted by the tightening shaft flexible assembly and the radial displacement of the tightening head assembly can be limited.
5. The multi-function assembly turret with fixed-torque tightening mechanism according to claim 1, characterized in that the work piece can be assembled to a preset torque by having the second power assembly (42) during the process of assembling the tightening mechanism (4) to the work piece.
6. The multi-function machine turret with fixed-torque tightening mechanism according to claim 5, wherein the work material is automatically driven to be corrected to a designated position by a functional unit provided in the second power unit (42) after the work material is assembled to a predetermined torque.
7. The multifunctional assembly turret with fixed-pitch tightening mechanism according to claim 2, characterized in that during the lifting of the tightening mechanism (4), the movement stroke of the tightening mechanism (4) can be limited by the buffer stop assembly provided and the tightening mechanism (4) can be buffered when the tightening mechanism (4) moves to the limit point towards the workpiece.
8. Multifunctional assembly turret with fixed-pitch tightening mechanism according to claim 1, characterized in that the fixed seat can be arranged in a removable manner on the functional platform by means of the lower tray (37) provided and can be selected between a fixed mode, in which the lower tray (37) is fastened to the functional platform by means of a connection, and an adaptive adjustment mode, in which the fixed seat can be displaced radially under the actuation of the tightening mechanism (4) to modify the piece to be machined to the centred position.
9. The multi-function assembly turret with fixed-pitch tightening mechanism according to claim 8, characterized in that the upper tray (36) is also provided in the fixed base to match the lower tray (37) for matching different workpieces and to guide the tightening unit (44) provided in the tightening mechanism (4) to find a centered position.
10. A multifunctional assembling method based on the multifunctional assembling mechanism, characterized in that the multifunctional assembling rotary table with the fixed-moment tightening mechanism of any one of claims 1 to 9 is adopted,
the method comprises the following steps:
the method comprises the following steps: controlling the assembly component to be centered and positioned with the machined workpiece;
step two: controlling the assembling component to move to an assembling position with the processed workpiece;
step three: and controlling the assembly to operate, and when the assembly torque reaches a preset torque, controlling the assembly to decelerate until the preset torque is reached.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010936955.3A CN112171252B (en) | 2020-09-08 | 2020-09-08 | Multifunctional assembly rotary table with fixed-moment screwing mechanism and assembly method |
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| CN202010936955.3A CN112171252B (en) | 2020-09-08 | 2020-09-08 | Multifunctional assembly rotary table with fixed-moment screwing mechanism and assembly method |
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| CN112171252A true CN112171252A (en) | 2021-01-05 |
| CN112171252B CN112171252B (en) | 2023-05-05 |
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| CN115139086A (en) * | 2022-06-20 | 2022-10-04 | 北京机械工业自动化研究所有限公司 | Automatic install and remove dabber device |
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| CN112171252B (en) | 2023-05-05 |
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