CN109773391B - Positioning tool for welding shielding ring and insert - Google Patents
Positioning tool for welding shielding ring and insert Download PDFInfo
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- CN109773391B CN109773391B CN201910122402.1A CN201910122402A CN109773391B CN 109773391 B CN109773391 B CN 109773391B CN 201910122402 A CN201910122402 A CN 201910122402A CN 109773391 B CN109773391 B CN 109773391B
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- 238000003466 welding Methods 0.000 title claims abstract description 53
- 238000003825 pressing Methods 0.000 claims abstract description 167
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 230000000903 blocking effect Effects 0.000 claims abstract description 11
- 230000000712 assembly Effects 0.000 claims abstract description 7
- 238000000429 assembly Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 210000004907 gland Anatomy 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The invention relates to a positioning tool for welding a shielding ring and an insert, which comprises a supporting seat with a central axis and an insert positioning seat, wherein the positioning tool is provided with a set reference plane vertical to the central axis; more than two pressing plate assemblies are uniformly distributed on the supporting seat at intervals in the circumferential direction around the central axis, each pressing plate assembly comprises a pressing plate, a pressing mechanism and a blocking positioning piece, the pressing contact positions of the shielding rings and the pressing plates are used as fulcrums, and the pressing mechanisms and the blocking positioning pieces respectively apply reverse torque to the pressing plates. The positioning accuracy and the positioning reliability between the shielding ring and the insert are ensured.
Description
Technical Field
The invention relates to a positioning tool for welding a shielding ring and an insert.
Background
The chinese patent application publication No. CN108320869A discloses a dc basin insulator, which includes a shielding ring and an insert (i.e., an insert) disposed outside the shielding ring, where the shielding ring is disposed in an epoxy-alumina composite member and connected to an outer flange via the insert. The axial section of the shielding ring is circular, the radial section of the shielding ring is circular, the central lines of all circular surfaces of the circular axial section of the circular ring form a section central circle, and the center of the section central circle is positioned on the axis of the shielding ring; the inserts have a plurality ofly, arrange around the axial interval of shield ring, and the inserts is the column, and the axis of inserts is arranged along the radial extension of shield ring, and the inner of inserts and shield ring welded fastening, and the outer end is offered and is used for the connecting hole with the flange jogged joint that corresponds. In the actual connection process, the shielding ring and the insert need to be respectively positioned, the inner end part of the insert is abutted to the outer peripheral surface of the shielding ring, in order to ensure the connection reliability, the axis of the insert needs to be located on the plane where the cross-section center circle is located, the axis of the insert intersects with the axis of the shielding ring, then the shielding ring and the insert are kept relatively fixed through arrangement of the relative positioning position and the relative positioning angle, and then the shielding ring and the insert are connected together in a welding mode.
In order to ensure the relative positioning of the shielding ring and the insert during welding, a common welding positioning tool in the prior art can be applied to the positioning welding process of the shielding ring and the insert, for example, a welding tool of a high-voltage potential fixing plate is disclosed in the Chinese invention patent application document with the application publication number of CN108067796A, the welding tool is applied to the positioning of the high-voltage potential fixing plate and a terminal during welding, wherein the high-voltage potential fixing plate is of a cylindrical structure, the terminal is of a block structure, and a plurality of terminals are respectively welded at corresponding positions on the outer peripheral surface of the fixing plate; the welding frock includes annular frock body of circle, the frock body includes inner ring and outer loop, the outer loop is higher than the inner ring, the internal diameter of outer loop equals the external diameter of fixed plate, annular interval between outer loop and the inner ring forms the constant head tank that is used for the location to hold the fixed plate, the welding position department that corresponds the terminal on the outer loop simultaneously still is equipped with the recess that is used for holding the terminal, when welding position, place the fixed plate in the constant head tank earlier, put each solitary terminal in the recess again, thereby realize the relative positioning between fixed plate and the terminal.
However, when the welding tool is applied to the welding positioning process of the shielding ring and the insert, because the cross section of the shielding ring is circular, in the process of positioning the shielding ring, the positioning between the positioning groove and the shielding ring is line contact positioning, so that the shielding ring can generate circumferential jumping offset in the positioning process, the positioning can be inaccurate, the axis of the insert and the cross section center circle of the shielding ring cannot be accurately aligned, the welding positioning precision of each insert in the later welding process is inconsistent, the yield of the welding formed product is low, and the production efficiency is reduced.
Disclosure of Invention
The invention aims to provide a positioning tool for welding a shielding ring and an insert, which is used for relatively positioning the shielding ring and the insert so as to ensure higher relative positioning precision between the shielding ring and the insert.
In order to achieve the purpose, the technical scheme of the positioning tool for welding the shielding ring and the insert is as follows:
the positioning tool for welding the shielding ring and the insert comprises a supporting seat with a central axis and an insert positioning seat for positioning the insert, the positioning tool is provided with a set reference plane vertical to the central axis, a positioning groove for placing the shielding ring is arranged on the supporting seat, the positioning groove is an annular positioning groove or a multi-section arc-shaped positioning groove arranged annularly, the positioning groove is provided with a positioning groove wall for axially and radially positioning a section center circle of the shielding ring to a set position and a notch for installing the shielding ring into the positioning groove, the section center circle of the shielding ring at the set position is vertical to the central axis, the circle center of the section center circle is located on the central axis, and the section center circle and the reference plane have a set distance; more than two pressure plate assemblies for pressing the shielding ring in the positioning groove are uniformly distributed on the supporting seat at intervals in the circumferential direction around the central axis, each pressure plate assembly comprises a pressure plate, each pressure plate is provided with a pressure contact surface for contacting with the shielding ring, and the pressure contact surfaces and the notch of the positioning groove are oppositely arranged in the extending direction of the central axis; the pressing plate assembly further comprises a pressing mechanism and a stopping positioning piece, the stopping positioning piece is provided with a stopping positioning structure which is in stopping fit with the pressing plate in the axial direction of the central axis so as to position the pressing contact surface of the pressing plate to a set distance from the reference plane, the pressing mechanism is used for applying pressing force towards the positioning groove to the shielding ring, the pressing contact positions of the shielding ring and the pressing plate are taken as fulcrums, and the pressing mechanism and the stopping positioning piece respectively apply pressing torque and stopping torque in opposite directions to the pressing plate.
The invention has the beneficial effects that: compared with the prior art, the positioning tool for welding the shielding ring and the insert is characterized in that the central axis is arranged on the supporting seat, the positioning tool is designed to be provided with a set reference plane vertical to the central axis, the positioning groove is arranged on the supporting seat to enable the axis of the shielding ring to be consistent with the central axis, and a set distance is reserved between a cross-section central circle of the corresponding shielding ring and the set reference plane, so that the set reference plane and the central axis of the supporting seat are designed before welding, the positioning groove processed on the supporting seat according to the two references can ensure the axial positioning and the radial positioning of the shielding ring, the shielding ring is prevented from jumping and deviating in the axial direction and the radial direction, and the shielding ring can be accurately positioned; at least two press plate assemblies which are annularly and uniformly distributed are designed, after the shielding ring is placed in the positioning groove, all circumferential positions of the shielding ring can be pressed tightly through the press plate assemblies, and the reliable and stable positioning accuracy of the shielding ring is guaranteed; furthermore, the shielding ring is pressed by the pressing plate of the pressing plate assembly, the pressing mechanism and the blocking positioning piece apply pressing torque and blocking torque in opposite directions to the pressing plate taking the pressing contact position of the shielding ring as a fulcrum, the blocking positioning piece enables the pressing contact surface of the pressing plate to be perpendicular to the central axis, the pressing mechanism can stably press the shielding ring in the positioning groove, the pressing plate can be guaranteed to press the shielding ring along the direction of the central axis finally, the pressing positions are uniformly distributed, the pressing degree is more stable, the positioning accuracy and the positioning reliability of the shielding ring are further guaranteed, meanwhile, the relative positioning position of the insert relative to the shielding ring is achieved through the arrangement of the insert positioning seat, and the shielding ring and the insert are guaranteed to have higher relative positioning accuracy.
Furthermore, in order to make the whole structure compact and facilitate the assembly and disassembly of the shielding ring, the pressing mechanism and the stopping positioning piece of the pressing plate assembly are arranged on the radial inner side of the positioning groove from outside to inside along the radial direction of the positioning groove, the pressing mechanism is used for applying pressing force moving towards the supporting seat to the pressing plate so as to apply pressing torque to the pressing plate, and the stopping positioning piece is used for applying supporting force moving back to the supporting seat to the pressing plate so as to apply stopping torque to the pressing plate.
Furthermore, in order to compress the welding position and meet a larger welding space, an avoiding groove for avoiding the welding space is formed in the position, which is used for being in pressure contact with the shielding ring and corresponds to the insert welding, on the pressing plate.
Further, in order to be able to get when putting at the shield ring convenient operation, it leads to the groove for the radial outside's of notch orientation constant head tank T shape to dodge the groove, and T shape leads to the groove and includes the path section groove of inboard path and the big footpath section groove in the outside, hold-down mechanism including wearing the dress in the path section groove of clamp plate and with supporting seat fixed connection's the piece that compresses tightly, the clamp plate can follow the direction of keeping away from the notch orientation in groove in the dorsad and remove and will compress tightly the piece and follow the path is got in the path section groove of footpath removal extremely in the big footpath section groove, when compressing tightly the piece in the big footpath section groove the pressure contact surface of clamp plate removes to the radial inboard of constant head tank in order. Can directly compress tightly the relative piece inward movement of clamp plate when getting put the shield ring can, compress tightly the inboard that the pressure contact face of clamp plate removed to the constant head tank when moving to big footpath groove section, can take out the shield ring along the notch direction of constant head tank like this.
Further, for make assembly structure simple and convenient, can make things convenient for the loading and unloading of clamp plate simultaneously, the screw rod of dress in supporting seat and clamp plate is worn for fixed for wearing along the direction that is on a parallel with the central axis to the clamp plate to the piece that compresses tightly, hold-down mechanism still including twist soon on the screw rod and to the clamp plate exert towards the gland nut of the effort that the supporting seat removed, the width of the big footpath groove segment of dodging the groove is greater than gland nut's radial dimension. Therefore, the pressing plate can be directly sleeved on the screw rod from the large-diameter groove section of the avoiding groove without taking down the compression nut.
Furthermore, in order to facilitate support and adjustment and simultaneously ensure the setting of the reverse torque of the stop positioning piece relative to the pressing mechanism, the stop positioning piece comprises a limiting rod, one end of the limiting rod extends towards the pressing plate and pushes against the pressing plate to form the stop positioning structure, the other end of the limiting rod is in threaded connection with the supporting seat to adjust the extending height of the limiting rod, a guide long groove extending along the radial direction of the positioning groove is arranged on one side plate of the pressing plate facing the supporting seat, and the stop positioning structure is pushed against the guide long groove to guide the pressing plate to move in the radial direction of the positioning groove relative to the pressing piece. The pressing plate can move along the radial direction, and is convenient to adjust.
Further, for convenient processing, the supporting seat comprises a bottom plate and a positioning ring arranged on the bottom plate, and the positioning groove is an annular positioning groove arranged on the end face of the positioning ring.
Furthermore, in order to ensure good contact between the insert and the shielding ring, a containing groove for the insert to pass through so as to contact with the shielding ring is arranged at the welding position of the groove wall on the radial outer side of the locating groove corresponding to the insert.
Furthermore, in order to realize the positioning and installation of the insert, the insert positioning seat is fixed on the supporting seat, an insert positioning structure which is matched with the insert in a positioning mode and used for positioning the axis of the insert to the plane where the cross section center circle of the shielding ring is located is arranged on the insert positioning seat, the insert positioning structure extends along the radial direction of the positioning groove to enable the axis of the insert to be intersected with the central axis, and an insert fixing structure used for fixing the insert on the insert positioning structure is further arranged on the insert positioning seat.
Furthermore, in order to facilitate taking and placing of the whole workpiece after the insert welding is completed, the insert positioning structure is a positioning straight groove, the insert fixing structure comprises a pressing hook connected to the insert positioning seat through a connecting stud, the pressing hook is provided with a pressing end used for pressing the insert to be tightly pressed in the positioning straight groove, the connecting stud is in threaded connection with an adjusting nut matched with the pressing hook, and the pressing hook is in running fit with the connecting stud to enable the pressing end to rotate around the connecting screw to the position of a loading and unloading path avoiding the insert.
Drawings
Fig. 1 is a schematic structural view of a positioning tool for welding a shield ring and an insert according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line K of FIG. 1;
FIG. 3 is a top view of the base plate of FIG. 2;
FIG. 4 is a top view of the cage of FIG. 2;
FIG. 5 is a sectional view taken along line A in FIG. 4;
FIG. 6 is a top view of the platen of FIG. 2;
FIG. 7 is a schematic structural view of the V-block of FIG. 2;
FIG. 8 is a schematic structural view of the baffle of FIG. 2;
FIG. 9 is a schematic view of the press hook of FIG. 2;
description of reference numerals: 1-a bottom plate; 11-a locating ring mounting hole; 12-installing threaded holes on the double-head screw; 13-supporting the mounting threaded hole; 14-positioning holes of the V-shaped blocks; 15-positioning the positioning holes of the positioning ring; 16-a locating pin; 17-a screw; 2-a shield ring; 3-an insert; 4-positioning ring; 41-annular positioning groove; 42-a holding tank; 43-screw mounting holes; 44-dowel holes; 5, pressing a plate; 51-avoidance slots; 52-a chute; 53-guiding the elongated slot; 6-adjusting the support; 61-adjusting the nut; 7-a double-ended screw; 71-a compression nut; 8-V-shaped block; 81-V-shaped grooves; 82-positioning holes; 83-mounting holes; 85-pressing the hook; 86-an arc-shaped slot; 87-a stud; 88-a coupling nut; 9-a lifting eye screw; 10-a baffle plate; 101-screw holes; 102-a threaded hole; 103-socket head cap screw.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the specific embodiment of the positioning tool for welding the shielding ring and the insert, as shown in fig. 1, the positioning tool comprises a bottom plate 1, the bottom plate 1 is a circular plate and has a central axis extending in the vertical direction, in the embodiment, a plane where an upper plate surface of the bottom plate 1 is located is set as a reference plane, and the reference plane is set to be capable of unifying positioning and installation references of various parts, so that the unification of the references is ensured and the positioning accuracy of the whole structure is ensured.
As shown in fig. 1, 2 and 3, the upper plate surface of the bottom plate 1 is provided with a positioning ring 4 at the middle position in the radial direction, the locating ring 4 is in a ring shape, locating pin holes 44 and screw mounting holes 43 are arranged on the locating ring 4 along the circumferential direction, the specific fixing mode is that a circle of locating ring mounting holes 11 are arranged at the radial corresponding positions on the bottom plate 1, meanwhile, a circle of positioning ring positioning holes 15 are arranged at the position corresponding to the positioning ring 4 in the radial direction of the upper plate surface of the bottom plate 1, the positioning ring 4 is penetrated into the positioning ring positioning holes 15 from bottom to top through positioning pins 16 to realize positioning, and the positioning ring 4 and the bottom plate 1 are relatively fixed by penetrating the screw 17 into the positioning ring 4 from bottom to top, so that the positioning ring 4 and the bottom plate 1 can be coaxially arranged, namely, the axis of the positioning ring 4 is consistent with the central axis, and the bottom plate 1 and the positioning ring 4 form a supporting seat.
As shown in fig. 4 and 5, an annular positioning groove 41 is provided on the upper end surface of the positioning ring 4, the annular positioning groove 41 is used for placing the shielding ring 2, and the annular positioning groove 41 has a positioning groove wall for axially and radially positioning the cross-sectional center circle of the shielding ring 2 to a set position, and a notch for installing the shielding ring 2 into the annular positioning groove 41. The axial section of the shielding ring 2 is circular, the radial section is circular, the central lines of all circular surfaces of the axial section form the section central circle, the axial and radial directions of the section central circle are positioned, namely, after the shielding ring 2 is placed in the annular positioning groove 41, the section central circle of the shielding ring 2 is at a set position, the annular positioning groove 41 can ensure that the section central circle at the position is perpendicular to the central axis, the center of the section central circle is located on the central axis, and the section central circle is parallel to the upper plate surface of the bottom plate 1 and has a set distance. Therefore, the arrangement of the annular positioning groove 41 on the positioning ring 4 ensures that the axis of the shielding ring 2 is consistent with the central axis, and the upper plate surface of the cross-section central circle and the upper plate surface of the bottom plate 1 are parallel to each other, so that the shielding ring 2 is accurately positioned.
As shown in fig. 1 and fig. 2, in order to compress the shielding ring 2, in this embodiment, a plurality of pressing plate assemblies are uniformly distributed on the bottom plate 1 at intervals in the circumferential direction around the central axis, each pressing plate assembly includes a pressing plate 5, a pressing mechanism and a stop positioning member, wherein the pressing plate 5 is of a flat plate structure, in this embodiment, the pressing plate 5 is limited on the inner side of the positioning ring 4 by the pressing mechanism and the stop positioning member, the outer end of the pressing plate 5 is outwardly suspended above the shielding ring 2, the lower plate surface of the pressing plate 5 forms a pressing contact surface for contacting and pressing with the shielding ring 2, and the position where the edge of the outer end of the pressing contact surface is in pressing contact with the shielding ring 2 forms a pressing contact portion.
The specific assembling form is that the pressing mechanism comprises a double-threaded screw 7 which is in threaded connection with a double-threaded screw mounting threaded hole 12 of the bottom plate 1, the double-threaded screw 7 is positioned on the inner side of the positioning ring 4, the axis of the double-threaded screw 7 extends up and down, the upper end of the double-threaded screw 7 penetrates through the pressing plate 5 and then extends out of the upper plate surface of the pressing plate 5, the pressing mechanism further comprises a pressing nut 71 which is screwed on the upper end part of the double-threaded screw 7, the double-threaded screw 7 forms a pressing piece which is arranged in the pressing plate in a penetrating mode and fixedly connected with the supporting seat, and. In actual operation, the pressing plate 5 is pressed on the shielding ring 2 through the relative screwing fit between the pressing nut 71 and the double-threaded screw 7, or the pressing of the shielding ring 2 is released through the relative unscrewing fit, the structure is relatively simple, and of course, in other embodiments, the double-threaded screw may be a one-way screw with one end fastened on the bottom plate and the other end having a threaded section, or a bolt or other structures may be adopted.
Further, a bearing mounting threaded hole 13 is further formed in the bottom plate 1 and located on the inner side of the positioning ring 4, the bearing mounting threaded hole 13 is arranged on the bottom plate 1 and located on the inner side of the double-threaded screw 7, the stopping positioning piece comprises an adjusting bearing 6, the adjusting bearing 6 can limit the pressure plate 5 in the vertical direction to form a limiting rod, the lower end of the adjusting bearing 6 is provided with an external thread, the adjusting bearing 6 is connected to the bottom plate 1 through a thread, in the embodiment, the upper end of the adjusting bearing 6 abuts against the lower portion of the pressure plate 5 in the vertical direction and is used for supporting and limiting the pressure plate 5 to form a stopping positioning structure. The pressing contact part is located at the outer edge of the bottom plate 1, the double-threaded screw 7 penetrates through the middle of the pressing plate 5, the adjusting support 6 abuts against the inner edge of the pressing plate 5, the pressing contact part on the pressing plate 5 serves as a fulcrum, the adjusting support 6 is used for stopping and limiting the pressing plate 5 downwards, the double-threaded screw 7 is used for pressing and fixing the pressing plate 5 downwards, and therefore the adjusting support 6 and the double-threaded screw 7 can apply reverse torque to the pressing plate 5 respectively.
Of course, in this embodiment, in order to ensure the direction of the pressure applied to the shielding ring 2 and the plane perpendicular to the center circle of the cross section, in this embodiment, an adjusting nut 61 is further screwed on the upper plate surface of the bottom plate 1 at the middle position of the outer peripheral surface of the adjusting support 6, the adjusting support 6 can be extended up and down relative to the bottom plate 1 by screwing the adjusting nut 61, the upper end extending position of the adjusting support 6 can be adjusted, and the height of the inner edge position of the pressure plate 5 relative to the outer edge position thereof can be finely adjusted by adjusting the adjusting support 6, so as to finally ensure that the lower plate surface of the pressure plate 5 and the upper plate surface of the bottom plate 1 are parallel to each other. This enables a positioning and pressing of the shielding ring 2.
Meanwhile, in this embodiment, as shown in fig. 2 and fig. 6, in order to facilitate the welding operation, an avoiding structure is disposed at a welding position on an outer edge of the pressing plate 5, which is used for being pressed against the shielding ring 2 and corresponds to the insert, the avoiding structure is an avoiding groove 51 extending up and down, a notch of the avoiding groove 51 faces outward, the avoiding groove 51 can avoid a welding space, and the welding operation is facilitated, but in other embodiments, the avoiding structure may also be an avoiding hole extending up and down.
Further, in this embodiment, dodge groove 51 bit T-slot structure on clamp plate 5, including the big footpath groove section in the outside and the path groove section of inboard, wherein path groove section has constituted the spout 52 that supplies double-end screw 7 to wear the dress, this spout 52 is when clamp plate 5 is fixed on bottom plate 1, double-end screw 7 wears the dress in spout 52, set up like this and can fasten clamp plate 5 through double-end screw 7 and gland nut 71, when gland nut 71 loosens, clamp plate 5 can move to dodging in the big footpath groove section of groove 51 along the extending direction of spout 52, the setting can be with the separation of the pressure portion and the shield ring 2 of clamp plate 5 like this, the pressure contact face moves to the inboard of annular positioning groove 41, conveniently directly get and put shield ring 2. The structural style of the sliding groove 52 in this embodiment is also convenient for assembling the pressing plate 5, and the width of the large-diameter groove section of the avoiding groove 51 is larger than the radial dimension of the compression nut 71, so that the pressing plate 5 can be sleeved on the double-end screw through the large-diameter groove section of the avoiding groove 51 without detaching the compression nut 71. Meanwhile, in order to facilitate guiding, in this embodiment, a guide long groove 53 extends from the inner edge position of the lower plate surface of the pressure plate 5 in the direction of the double-threaded screw 7 and the avoiding groove 51, the upper end portion of the adjusting support 6 is guided and assembled in the guide long groove 53 and abuts against and cooperates with the groove bottom wall of the guide long groove 53 to realize stop and limit, and when the double-threaded screw 7 is loosened, the pressure plate 5 can be guided to translate along the radial direction of the annular positioning groove 41 relative to the double-threaded screw 7 due to the guide long groove 53 and the adjusting support 6. Thus, before welding, the pressure plate 5 can be moved radially inward along the annular positioning groove 41 to expose the space in the direction of the notch of the annular positioning groove 41 completely, and the shield ring 2 can be placed directly therein, and after welding is completed, the shield ring 2 can be taken out in the same manner.
Therefore, the shielding ring 2 is positioned and clamped in the annular positioning groove 41 through the positioning ring 4 and the pressing plate assembly.
For the positioning of the insert 3, as shown in fig. 1, 2 and 7, in this embodiment, a plurality of insert positioning seats are further fixed on the bottom plate 1, and are uniformly distributed around the circumference of the positioning ring 4 at intervals, in order to realize the accurate positioning of the insert 3, the insert positioning seat is a V-shaped block 8 fixed on the bottom plate 1, a V-shaped groove 81 on the V-shaped block 8 extends along the radial direction of the annular positioning groove 41, the insert 3 is placed in the V-shaped groove 81, the V-shaped groove 81 is a positioning straight groove, in other embodiments, the structure may be a U-shaped groove or a C-shaped groove, the V-shaped groove 81 is arranged to position the axis of the insert 3 to the plane of the cross-section center circle of the shielding ring 2, this arrangement enables the insert 3 to be aligned radially with the screening ring 2 by reference to the central axis on the base plate 1, the axis of the insert 3 is located on the plane of the center circle of the cross section of the shield ring 2 by the reference plane of the upper plate surface of the base plate 1. This enables the relative positioning of the insert 3 and the screening ring 2.
As shown in fig. 2, 7, 8 and 9, the two side groove walls of the V-shaped block 8 are provided with a positioning hole 82 and a mounting hole 83, and a corresponding V-shaped block positioning hole 14 is correspondingly provided at a radial edge position on the bottom plate 1, and the V-shaped block 8 is fixed on the bottom plate 1 by a positioning pin and a socket head cap screw in a penetrating manner during assembly. Meanwhile, in order to tightly press and fix the insert 3 on the V-shaped block 8, a baffle plate 10 is connected on the radial outer side wall of the V-shaped block 8 corresponding to the bottom plate 1, the baffle plate 10 is inserted into a screw hole 101 on the side wall of the baffle plate 10 through a socket head cap screw 103, the baffle plate is fixed on the V-shaped block 8 and is blocked at the notch of the outer end of the V-shaped groove 81, the axial movement of the insert 3 can be limited, meanwhile, the upper end surface of the baffle plate 10 is provided with a threaded hole 102 extending downwards, correspondingly, a stud 87 extending up and down is screwed in the threaded hole 102, a press hook 85 is sleeved on the stud 87, a connecting nut 88 is screwed above the pressing hook 85, the pressing hook 85 is pressed by the connecting nut 88 in the process of screwing and moving downwards relative to the stud 87, so that the pressing hook 85 is pressed on the peripheral surface of the insert 3, and then the clamping of inserts 3 is realized, and the part that cooperates with inserts 3 on the lower terminal surface of pressure hook 85 is the arc groove 86 of upwards sinking with inserts 3's peripheral surface adaptation. Meanwhile, in the embodiment, the press hook 85 is positioned above the V-shaped block 8, and in the actual use process, after the connecting nut 88 is unscrewed, the press hook 85 is rotated to a certain position around the axis of the stud 87, so that the press hook 85 avoids the mounting and dismounting position of the insert 3 on the V-shaped groove 81, and the insert 3 can be conveniently taken and placed.
In order to enable the insert 3 and the shielding ring 2 to abut against each other, in this embodiment, a radially extending accommodating groove 42 is formed on the outer side groove wall of the annular positioning groove 41 corresponding to the welding position of the insert 3, and the insert 3 can penetrate through the accommodating groove 42 and then abut against the outer side wall of the shielding ring 2.
In the actual use, processing position circle locating hole 15 and V-arrangement piece locating hole 14 on bottom plate 1 to processing support mounting screw hole 13 and double-end screw rod mounting screw hole 12, hoist when two eyebolts 9 make things convenient for bottom plate 1 position to remove in the suitable position of bottom plate 1, bottom plate 1 can be according to the different locating holes of the shield ring 2 of different models and 3 processing of inserts, can satisfy the shield ring 2 of multiple model and insert 3's welding position demand, stronger commonality has.
During assembly, place position circle 4 on bottom plate 1, utilize locating pin 16 location, screw 17 precession bottom plate 1, guarantee that the bottom of bottom plate 1 is level and smooth, shield ring 2 is placed in annular positioning groove 41 of position circle 4, shield ring 2 cooperates with the overall dimension of annular positioning groove 41, will adjust supporting 6 and double-end screw 7 and revolve to bottom plate 1 on, the outer end pressure of clamp plate 5 touches on shield ring 2, the inner is pressed and is established on adjusting supporting 6, make the upper end jack-up clamp plate 5 of adjusting supporting 6 through adjusting nut 61, guarantee leveling of clamp plate 5, adjust gland nut 71 and compress tightly clamp plate 5, thereby guaranteed the location and the clamp of shield ring 2 and pressed from both sides tightly.
The V-shaped block 8 is placed on the bottom plate 1, the positioning pin is inserted into the positioning hole 14 of the V-shaped block for positioning, the inner hexagonal screw is screwed into a corresponding threaded hole of the bottom plate 1, the insert 3 is placed on the V-shaped block 8, the pressing hook 85 is pressed on the insert 3, the connecting nut 88 on the stud 87 is adjusted to compress the upper end face of the insert 3, the baffle 10 is tightly attached to the end face of the V-shaped block 8 and is fixed by the inner hexagonal screw, so that the play of the insert 3 is limited, and the positioning and the clamping of the insert 3 are realized.
After a workpiece is welded, the workpiece can be taken out only by loosening the connecting nut 88 and the compression nut 71 and pulling the pressing plate 5 and the rotating pressing hook 85, so that the operation is simple, the clamping is convenient, the labor intensity is reduced, and the production efficiency is improved.
In other embodiments, the cross section of the annular positioning groove can also be in a V-shaped groove, a U-shaped groove and other structures; the locating ring and the bottom plate can be integrally formed in a die-casting mode and the like.
In other embodiments, the pressing mechanism and the stopping positioning element can be respectively arranged on two radially opposite sides of the annular positioning groove, and at the moment, the pressing mechanism presses downwards, the stopping positioning element stops downwards from the pressing plate, so that the pressing contact part is used as a fulcrum, and the pressing mechanism and the stopping positioning element apply reverse torque to the pressing plate.
In other embodiments, the pressing plate can press the shielding ring integrally at the welding position avoiding the insert, namely the welding position with the insert between two adjacent pressing plates.
In other embodiments, the stopping and positioning element may also be a limiting plate, specifically, a long hole extending vertically is formed in the bottom plate, the limiting plate is inserted into the long hole, a through hole is formed in the center of the bottom plate, a fastening nail is arranged on the side wall of the through hole at a position corresponding to the limiting plate, and after the limiting plate is adjusted in place, the limiting plate is locked by the fastening nail.
In other embodiments, the pressing mechanism may be a fixed rod disposed on the bottom plate, a cam is rotatably disposed on the fixed rod, an outer contour of the cam is pressed on the pressing plate, and the pressing and the rotating of the pressing plate are realized in a rotating stroke of the cam.
In other embodiments, the annular positioning groove may be a plurality of segments of arc-shaped positioning grooves arranged in an annular shape.
In other embodiments, the accommodating groove is not provided, and the upper end surface of the groove wall of the direct accommodating groove of the insert passes through.
In other embodiments, the insert positioning structure can be a positioning straight hole, and the insert is locked in place through the fastening nail on the outer side.
Claims (8)
1. The positioning tool for welding the shielding ring and the insert comprises a supporting seat with a central axis and an insert positioning seat for positioning the insert, and is characterized in that the positioning tool is provided with a set reference plane vertical to the central axis, the positioning tool comprises a bottom plate, the bottom plate is provided with a central axis extending along the vertical direction, the plane of an upper plate surface of the bottom plate is set as the reference plane, a positioning ring is arranged at the middle position of the upper plate surface of the bottom plate in the radial direction, the positioning ring is annular, positioning pin holes and screw mounting holes are arranged on the positioning ring along the circumferential direction of the positioning ring, a circle of positioning ring mounting hole is arranged at the radial corresponding position on the bottom plate, a circle of positioning ring positioning hole is also arranged at the position of the upper plate surface of the bottom plate corresponding to the positioning ring mounting hole in the radial direction, and the positioning ring is arranged in the positioning ring, the positioning ring and the bottom plate are fixed relatively by penetrating a screw into the positioning ring from bottom to top, so that the positioning ring and the bottom plate are arranged coaxially, the bottom plate and the positioning ring form a supporting seat, the supporting seat is provided with a positioning groove for placing a shielding ring, the positioning groove is arranged on the upper end surface of the positioning ring and is an annular positioning groove or a multi-section arc-shaped positioning groove which is arranged annularly, the positioning groove is provided with a positioning groove wall for axially and radially positioning a cross-section central circle of the shielding ring to a set position and a notch for installing the shielding ring into the positioning groove, the cross-section central circle of the shielding ring at the set position is vertical to a central axis, the center of the cross-section central circle is positioned on the central axis, and the cross-section central circle has a set; more than two pressure plate assemblies for tightly pressing the shielding ring in the positioning groove are uniformly distributed on the supporting seat at intervals in the circumferential direction around the central axis, the pressure plate assemblies are arranged on the bottom plate and comprise pressure plates, each pressure plate is provided with a pressure contact surface for contacting with the shielding ring, and the pressure contact surfaces and the notch of the positioning groove are oppositely arranged in the extending direction of the central axis; the pressing plate assembly further comprises a pressing mechanism and a blocking positioning piece, the blocking positioning piece is provided with a blocking positioning structure which is in blocking fit with the pressing plate in the axial direction of the central axis so as to position a pressing contact surface of the pressing plate to a set distance from a reference plane, the lower plate surface of the pressing plate and the upper plate surface of the bottom plate are ensured to be parallel to each other, the pressing mechanism is used for applying pressing force towards the positioning groove to the shielding ring, the pressing mechanism and the blocking positioning piece respectively apply pressing torque and blocking torque in opposite directions to the pressing plate by taking the pressing contact position of the shielding ring and the pressing plate as a fulcrum, the insert positioning seat is provided with an insert positioning structure which is in positioning fit with the insert and is used for positioning the axis of the insert to the plane of the central circle of the section of the shielding ring, the insert positioning structure is a positioning straight groove which extends in the radial direction of the positioning groove so that the axis of the insert is intersected with the central axis of, the insert fixing structure comprises a pressing hook connected onto an insert positioning seat through a connecting stud, the pressing hook is provided with a pressing end used for pressing the insert so as to press the insert in a positioning straight groove, the connecting stud is connected with an adjusting nut matched with the pressing hook in a threaded manner, the pressing hook is in running fit with the connecting stud so that the pressing end can rotate around a connecting screw to the position of a loading and unloading path avoiding the insert, the insert positioning seat is a V-shaped block fixed on a bottom plate, positioning holes and mounting holes are formed in two side groove walls of the V-shaped block, corresponding V-shaped block positioning holes are formed in the positions, located at the radial edge, of the bottom plate, corresponding threaded holes are formed in the bottom plate, and the V-shaped block is fixedly arranged on the bottom plate in.
2. The positioning tool for welding the shielding ring and the insert according to claim 1, wherein the pressing mechanism and the stopping positioning member of the pressing plate assembly are arranged at a radially inner side of the positioning groove from outside to inside along a radial direction of the positioning groove, the pressing mechanism is configured to apply a pressing force moving toward the supporting seat to the pressing plate so as to apply a pressing torque to the pressing plate, and the stopping positioning member is configured to apply a supporting force moving away from the supporting seat to the pressing plate so as to apply a stopping torque to the pressing plate.
3. The positioning tool for welding the shielding ring and the insert according to claim 2, wherein an avoiding groove for avoiding a welding space is formed in a position, corresponding to the insert welding, of the pressing plate, and the pressing plate is in press contact with the shielding ring.
4. The positioning tool for welding the shielding ring and the insert according to claim 3, wherein the avoiding groove is a T-shaped through groove with a notch facing the radial outer side of the positioning groove, the T-shaped through groove comprises an inner small-diameter section groove and an outer large-diameter section groove, the pressing mechanism comprises a pressing member which is inserted into the small-diameter section groove of the pressing plate and is fixedly connected with the supporting seat, the pressing plate can move in a direction opposite to the direction of the notch facing the avoiding groove to move the pressing member from the small-diameter section groove to the large-diameter section groove, and when the pressing member is located in the large-diameter section groove, the pressing contact surface of the pressing plate moves to the radial inner side of the positioning groove to avoid the taking and placing path of the shielding ring.
5. The positioning tool for welding the shielding ring and the insert according to claim 4, wherein the pressing member is a screw rod fixedly inserted in the supporting seat and the pressing plate in a direction parallel to the central axis, the pressing mechanism further comprises a pressing nut screwed on the screw rod and applying an acting force to the pressing plate to move towards the supporting seat, and the width of the large-diameter groove section of the avoiding groove is greater than the radial dimension of the pressing nut.
6. The positioning tool for welding the shielding ring and the insert according to claim 4 or 5, wherein the stop positioning member comprises a limiting rod, one end of the limiting rod extends towards the pressing plate and pushes against the pressing plate to form the stop positioning structure, the other end of the limiting rod is in threaded connection with the supporting seat to adjust the extending height of the limiting rod, a guide elongated slot extending along the radial direction of the positioning slot is formed in one side plate of the pressing plate facing the supporting seat, and the stop positioning structure pushes against the guide elongated slot to guide the pressing plate to move in a radial direction of the positioning slot relative to the pressing member.
7. The positioning tool for welding the shielding ring and the insert according to any one of claims 1 to 5, wherein the positioning groove is an annular positioning groove formed in an end surface of the positioning ring.
8. The positioning tool for welding the shielding ring and the insert according to any one of claims 1 to 5, wherein a receiving groove for the insert to pass through to contact with the shielding ring is formed in a groove wall on the radial outer side of the positioning groove at a position corresponding to the welding position of the insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910122402.1A CN109773391B (en) | 2019-02-19 | 2019-02-19 | Positioning tool for welding shielding ring and insert |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910122402.1A CN109773391B (en) | 2019-02-19 | 2019-02-19 | Positioning tool for welding shielding ring and insert |
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| CN109773391A CN109773391A (en) | 2019-05-21 |
| CN109773391B true CN109773391B (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910122402.1A Active CN109773391B (en) | 2019-02-19 | 2019-02-19 | Positioning tool for welding shielding ring and insert |
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| CN112059498B (en) * | 2019-06-11 | 2022-08-26 | 河南森源重工有限公司 | Shower nozzle subassembly welding frock |
| CN112378316B (en) * | 2020-09-25 | 2022-07-12 | 平高东芝（河南）开关零部件制造有限公司 | Inspection and correction tool for shielding ring assembly for insulating cylinder |
| CN112475720A (en) * | 2020-11-16 | 2021-03-12 | 中国航发沈阳黎明航空发动机有限责任公司 | Positioning and compressing device for efficient micro-beam welding |
| CN112846617B (en) * | 2021-01-05 | 2023-01-31 | 北京动力机械研究所 | Multi-section annular pipeline welding deformation control tool |
| CN113963872B (en) * | 2021-09-30 | 2024-04-05 | 河南平高电气股份有限公司 | Wall bushing with conducting rod transportation supporting structure |
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| SU422560A1 (en) * | 1972-01-19 | 1974-04-05 | А. В. Васильченко , А. М. Нецвитай | DEVICE FOR WELDING RING SEAMS |
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| CN109773391A (en) | 2019-05-21 |
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