CN115070447A - Special fixture for turning seawater pump shell - Google Patents
Special fixture for turning seawater pump shell Download PDFInfo
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- CN115070447A CN115070447A CN202210721761.0A CN202210721761A CN115070447A CN 115070447 A CN115070447 A CN 115070447A CN 202210721761 A CN202210721761 A CN 202210721761A CN 115070447 A CN115070447 A CN 115070447A
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- pin
- water pump
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- 239000013535 sea water Substances 0.000 title claims abstract description 71
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 230000000670 limiting effect Effects 0.000 claims description 52
- 239000000758 substrate Substances 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000007667 floating Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a special fixture for turning a sea water pump shell, which comprises a base plate, two clamping plates and positioning plates, wherein two positioning plates are oppositely arranged on one side of the upper surface of the base plate, two clamping plates are oppositely arranged on the other side of the upper surface of the base plate, a connecting seat is fixedly connected to one side of each positioning plate opposite to the other side of the corresponding positioning plate, a pressing plate capable of rotating along a shaft in a horizontal plane is arranged on the front side of each connecting seat, a balancing pin capable of abutting against the front side of the mounting plate on one side of the sea water pump shell is arranged at the inner end of each pressing plate, auxiliary positioning pins capable of abutting against the connecting seat are arranged at the outer ends of the corresponding pressing plates, a first positioning pin and a second positioning pin which are vertically distributed and capable of abutting against the rear side of the mounting plate are arranged on one side of the positioning plates facing the clamping plates, and a fastening pin which is horizontally arranged towards the direction of the positioning plates and can abut against the connecting plate on the other side of the sea water pump shell is arranged on each clamping plate. The invention has the beneficial effects that: the clamp can offset the inclined torque formed after the seawater pump shell is subjected to axial cutting component force, and the stress deformation of the shell is reduced to the maximum extent.
Description
Technical Field
The invention belongs to the field of clamp equipment for sea water pump shell production, and particularly relates to a special clamp for turning a sea water pump shell.
Background
The marine water pump of the marine diesel engine is an important component of a cooling system of the marine diesel engine and is used for pumping seawater to enable the seawater to flow rapidly in an engine water channel so as to take away heat generated by the engine during working and ensure the normal working temperature of the engine. The sea water pump has large water amount and the working speed of the sea water pump reaches 3200r/min, so that the sea water pump has extremely high requirements on the working stability and reliability of the sea water pump.
The sea water pump shell is used as an important part of the sea water pump and plays a key role in supporting, serially connecting other parts such as a driving shaft, an impeller and a bent pipe, bearing load and the like. The internal space of the shell of the seawater pump is volute, the impeller is sealed in a certain space, and seawater is sucked and pressed out under the action of the impeller; the outside needs to be provided with a water inlet bent pipe, and the inner hole of the water inlet bent pipe and the impeller are required to ensure a certain gap; meanwhile, a water seal and an oil seal are required to be installed, so that the tightness of an oil cavity and a water cavity of the seawater pump is ensured, and the phenomenon of water leakage or oil leakage of the seawater pump is prevented. Therefore, the processing quality and the processing precision of the inner hole and the outer circle of the shell seriously affect the performance and the reliability of the seawater pump. The shell of the sea water pump is made of copper-based alloy materials for improving corrosion resistance, and is a thin-wall casting with different thicknesses and special shapes, so that the shell is poor in rigidity and easy to deform.
In the early-stage shell production and machining process, the inner hole is machined by boring through a horizontal machining center, so that the combined fixture has the advantages that the workpiece can be positioned and clamped by the combined fixture, the adjustability of the clamping position is good, and the combined fixture has the defects of large number of boring cutters required for boring the inner hole and high machining cost; and the excircle milling machining precision and production efficiency are low. The processing mode is only suitable for small-batch production in the scientific research stage, the production cost is high, the production period is long, and the consistency of the processing precision is difficult to guarantee.
Disclosure of Invention
In view of the above, the invention provides a special fixture for turning a seawater pump shell, aiming at overcoming the defects of the above problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a sea water pump casing turning special fixture, which comprises a base plate, clamp plate and locating plate, base plate upper surface one side is equipped with two locating plates relatively, the opposite side is equipped with two clamp plates relatively, the equal rigid coupling in one side that two locating plates carried on the back mutually has the connecting seat, the connecting seat front side all is equipped with the clamp plate that can rotate along the axle in the horizontal plane, every clamp plate inner all is equipped with the balancing pin that can support tightly with the mounting panel front side of sea water pump casing one side, the outer end all is equipped with the auxiliary positioning pin that can support tightly with the connecting seat, one side towards the clamp plate is equipped with first locating pin and the second locating pin that distributes from top to bottom and can support tightly with the mounting panel rear side on the locating plate, all be equipped with on every clamp plate towards locating plate orientation level setting and can support tightly the holding pin with the connecting plate of sea water pump casing opposite side.
Further, still include the connection pad of rigid coupling in base plate bottom, the connection pad sets up to down to be a plurality of step structures to the indent in proper order from last, and the base plate is in the same place through a plurality of evenly distributed's first bolt rigid couplings between base plate and the connection pad.
Furthermore, a first through hole is formed in the middle of the substrate, a second through hole aligned with the first through hole is formed in the middle of the connecting disc, an annular convex edge is arranged on the upper side of the connecting disc in the circumferential direction of the second through hole, a first limiting groove corresponding to the annular convex edge is formed in the bottom of the substrate and located on the outer side of the first through hole in the circumferential direction, and the annular convex edge is located in the first limiting groove.
Furthermore, the upper surface of the connecting disc is located at the outer side of the annular convex edge and is provided with a first counter bore, a limiting part is arranged in the upper end of the first counter bore, the upper surface of the limiting part protrudes out of the opening at the upper end of the first counter bore, a second counter bore penetrates through the upper surface of the limiting part, the limiting part is fixed in the first counter bore through the first fixing screw penetrating through the second counter bore and in threaded fit with the first counter bore, the bottom of the substrate corresponds to the limiting part and is provided with a second limiting groove, and the limiting part protrudes out of the first counter bore and is embedded in the second limiting groove.
Furthermore, the clamping plate and the base plate are fixedly connected together through a second bolt, and the positioning plate and the base plate are fixedly connected together through a third bolt.
Furthermore, a first through groove is formed in the bottom of the positioning plate and arranged horizontally and longitudinally, a first strip-shaped groove is formed in the upper side of the base plate corresponding to the first through groove, a first limiting sliding key is fixedly connected in the first strip-shaped groove, and the upper end of the first limiting sliding key protrudes out of the opening of the first strip-shaped groove and is embedded in the first through groove; the bottom of the clamping plate is provided with a second through groove longitudinally arranged along the horizontal direction, the upper side of the substrate is provided with a second strip-shaped groove corresponding to the second through groove, a second limiting sliding key is fixedly connected in the second strip-shaped groove, and the upper end of the second limiting sliding key protrudes out of the opening of the second strip-shaped groove and is embedded in the second through groove.
Furthermore, two seventh mounting holes are formed in each positioning plate corresponding to the connecting seat, eighth mounting holes are formed in the connecting seat corresponding to the seventh mounting holes, and the connecting seat is in threaded connection with the seventh mounting holes and the eighth mounting holes through fourth bolts in a matched mode.
Furthermore, a first fixing hole is formed in the surface of one side, provided with the pressing plate, of the connecting seat, a first positioning hole communicated with the first fixing hole is formed in the side wall, adjacent to the side wall where the first fixing hole is located, of the connecting seat, and the tail end of the connecting piece is inserted into the first positioning hole and fixedly connected with the connecting piece through a first screw in the first positioning hole; the upper side and the lower side of the front end of the connecting piece are both designed into a plane structure and are vertically provided with through holes, the front side of the pressing plate corresponding to the connecting piece is horizontally provided with a strip-shaped hole, the upper side and the lower side of the strip-shaped hole are oppositely provided with vertical through holes, the front end of the connecting piece is inserted into the strip-shaped hole of the pressing plate, and the pressing plate is movably connected to the front end of the connecting piece through the matching of a vertically arranged rotating pin, the through holes and the through holes; the pressing plate is provided with a second threaded hole at the outer side of the inner end of the strip-shaped hole, a third threaded hole at the outer side of the outer end of the strip-shaped hole, the second threaded hole is internally screwed with a balance pin, and the third threaded hole is internally screwed with an auxiliary positioning pin.
Furthermore, the first positioning pin and the second positioning pin on the two positioning plates are respectively distributed in a diagonal manner, the front end of the first positioning pin is integrally provided with a first end cap which is positioned on the front side of the positioning plates, the outer end of the first end cap is of a vertical plane structure, the front side of the second positioning pin is integrally provided with a second end cap which is positioned on the front side of the positioning plates, the outer end of the second end cap is of a vertical plane structure, and the front side of the second end cap is integrally provided with an insert block which can be inserted into a positioning pin hole on the mounting plate; the first positioning pin and the second positioning pin are inserted into the corresponding second fixing holes and are fixed on the positioning plate through second screws in the second positioning holes.
Furthermore, two fastening pins are distributed on each clamping plate from top to bottom, a fourth threaded hole is formed in the corresponding fastening pin on each clamping plate, and the fastening pins are screwed in the fourth threaded holes.
Compared with the prior art, the invention has the following advantages:
(1) the special fixture for turning the sea water pump shell is characterized in that two clamping plates and two positioning plates are oppositely arranged at two ends of a base plate, a first positioning pin and a second positioning pin which are vertically distributed are arranged on the positioning plates, meanwhile, a pressing plate capable of adjusting the horizontal position is also arranged on the positioning plates, a balancing pin and an auxiliary positioning pin are arranged on the pressing plate, the sea water pump shell is placed between the two clamping plates and the two positioning plates when the special fixture is used, the first positioning pin and the second positioning pin are abutted against the rear side of the mounting plate of the sea water pump shell, the balancing pin is abutted against the front side of the mounting plate of the sea water pump shell, the balancing pin is positioned through the cooperation of the auxiliary positioning pin, and then the fastening pin on the clamping plates is abutted against the connecting plate at the other side of the sea water pump shell, so that the sea water pump shell is in a horizontal stable fastening state through the whole mutual cooperation;
(2) the special fixture for turning the sea water pump shell is integrally arranged in an eccentric structure, and a floating positioning structure is arranged on the positioning plate in consideration of the stress condition of the sea water pump shell in the turning process, namely a connecting structure consisting of the pressing plate capable of horizontally rotating on the connecting seat, the balance pins and the auxiliary positioning pins at the two ends of the pressing plate is adjusted, and then locking is carried out after floating positioning is carried out, so that the inclined torque formed after the sea water pump shell is subjected to axial cutting component force is offset, and the stress deformation of the shell is reduced to the maximum extent.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a special fixture for turning a seawater pump shell according to an embodiment of the invention;
FIG. 2 is a schematic view of a substrate structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a positioning plate according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a clamping plate according to an embodiment of the present invention;
FIG. 5 is an enlarged view taken at A in FIG. 1;
FIG. 6 is a schematic view of a connector according to an embodiment of the present invention;
FIG. 7 is a schematic view of a platen according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a land configuration according to an embodiment of the present invention;
fig. 9 is an exploded view of a special turning fixture for a seawater pump shell according to an embodiment of the present invention;
fig. 10 is a schematic structural view of a seawater pump housing clamped by the special turning fixture for a seawater pump housing according to an embodiment of the invention.
Description of reference numerals:
1. a substrate; 11. a first bolt; 12. a first through hole; 13. a first mounting hole; 14. a first limit groove; 15. a sixth mounting hole; 16. a fifth mounting hole; 17. a second limit groove; 18. a second strip groove; 19. a second limit sliding key; 110. a third set screw; 2. positioning a plate; 21. a first positioning pin; 211. a first end cap; 22. a second positioning pin; 221. a second end cap; 222. inserting a block; 23. a second screw; 24. a first through groove; 3. a clamping plate; 31. a fastening pin; 32. a third mounting hole; 33. a second through groove; 34. a fourth threaded hole; 4. a connecting seat; 41. a fourth bolt; 42. a first screw; 5. a connecting member; 51. a through hole; 6. pressing a plate; 61. a balance pin; 62. an auxiliary positioning pin; 63. a strip-shaped hole; 64. perforating the hole; 65. a second threaded hole; 66. a third threaded hole; 7. a connecting disc; 71. a second through hole; 72. an annular convex edge; 73. a first counterbore; 74. a limiting member; 75. a first set screw; 8. rotating the pin; 81. a retainer ring; 9. a seawater pump housing; 91. mounting a plate; 92. a connecting plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "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 used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in the figure, the special fixture for turning the seawater pump shell comprises a base plate 1, clamping plate 3 and locating plate 2, 1 upper surface one side of base plate is equipped with two locating plates 2 relatively, the opposite side is equipped with two clamping plates 3 relatively, two equal rigid couplings in one side that locating plate 2 carried on the back mutually have connecting seat 4, connecting seat 4 front side all is equipped with can be in the horizontal plane along the clamp plate 6 of axle rotation, every clamp plate 6 inner all is equipped with the balancing pin 61 that can support tightly with the mounting panel 91 front side of sea water pump casing 9 one side, the outer end all is equipped with the auxiliary positioning pin 62 that can support tightly with connecting seat 4, one side of locating plate 2 court to clamping plate 3 is equipped with about the distribution and can support tightly first locating pin 21 and second locating pin 22 with the mounting panel 91 rear side mutually, all be equipped with on every clamping plate 3 towards 2 direction levels of locating plate and set up and can support tightly mounting pin 31 with the connecting plate 92 of sea water pump casing 9 opposite side. In this embodiment, when in use, the base plate 1 is fixed on a machine tool, the seawater pump housing 9 is placed between the clamping plate 3 and the positioning plate 2, the mounting plate 91 of the seawater pump housing 9 abuts against the first positioning pin 21 and the second positioning pin 22, then the fastening pin 31 on the clamping plate 3 is screwed to make the end portion abut against the connecting plate 92 on the other side of the seawater pump housing 9, then the positions of the two pressing plates 6 are adjusted, the balance pin 61 is screwed to abut against the front side wall of the mounting plate 91 of the seawater pump housing 9, the auxiliary positioning pin 62 is screwed to abut against the connecting seat 4, the rear side wall of the mounting plate 91 is abutted against through the first positioning pin 21 and the second positioning pin 22, the front side wall of the mounting plate 91 is abutted against through the balance pin 61, meanwhile, the mounting plate 91 is ensured to be wholly in a vertical plane through the cooperation of the auxiliary positioning pin 62 without skewing, and finally the fastening pin 31 is adjusted to abut against the connecting plate 92, of course, the adjustment positions are matched with each other to finally ensure that the whole seawater pump shell 9 is in a horizontal stable and fastened state.
Still include the connection pad 7 of rigid coupling in base plate 1 bottom, connection pad 7 sets up to down from last to setting up a plurality of step structures of inwards recessing in proper order for cooperate with three chucks of grabbing on the lathe and make it fixed through three chucks of grabbing on the lathe, be in the same place through a plurality of evenly distributed's first bolt 11 rigid couplings between base plate 1 and the connection pad 7.
First through-hole 12 has been seted up to base plate 1 middle department, the second through-hole 71 that aligns with first through-hole 12 has been seted up to connection pad 7 middle department, upwards be equipped with annular protruding edge 72 along second through-hole 71 circumference at connection pad 7 upside, base plate 1 bottom is located first through-hole 12 outside circumference and is equipped with the first spacing groove 14 corresponding with annular protruding edge 72, annular protruding edge 72 is located first spacing groove 14, further strengthens the installation stability between base plate 1 and the connection pad 7, strengthens spacingly. In this embodiment, a plurality of first mounting holes 13 are circumferentially distributed on the substrate 1 around the first through hole 12, second mounting holes are respectively arranged on the upper side of the connecting disc 7 around the second through hole 71 and corresponding to the first mounting holes 13, and the first mounting holes 13 and the second mounting holes are screwed together through the first bolts 11.
The upper surface of the connecting disc 7 is provided with a first counter bore 73 at the outer side of the annular convex edge 72, a limiting member 74 is arranged in the upper end of the first counter bore 73, the upper surface of the limiting member 74 protrudes out of an opening at the upper end of the first counter bore 73, a second counter bore is arranged on the upper surface of the limiting member 74 in a penetrating manner, the limiting member 74 is fixed in the first counter bore 73 through a first fixing screw 75 penetrating through the second counter bore and in threaded fit with the first counter bore 73, the bottom of the substrate 1 is provided with a second limiting groove 17 corresponding to the limiting member 74, the limiting member 74 protrudes out of the first counter bore 73 and is embedded in the second limiting groove 17, the installation stability between the substrate 1 and the connecting disc 7 is further enhanced, and the limiting effect is enhanced.
The clamping plate 3 and the base plate 1 are fixedly connected together through a second bolt, and the positioning plate 2 and the base plate 1 are fixedly connected together through a third bolt. In this embodiment, two third mounting holes 32 are formed in the bottom of each clamping plate 3, two fourth mounting holes are formed in the bottom of each positioning plate 2, a fifth mounting hole 16 and a sixth mounting hole 15 are formed in the base plate 1 corresponding to the third mounting hole 32 and the fourth mounting hole respectively, the fifth mounting hole 16 and the corresponding third mounting hole 32 are connected together through a second bolt in a threaded manner, and the fourth mounting hole and the corresponding sixth mounting hole 15 are connected together through a third bolt in a threaded manner.
The bottom of the positioning plate 2 is provided with a first through groove 24 which is horizontally and longitudinally arranged, the upper side of the base plate 1 corresponding to the first through groove 24 is provided with a first strip-shaped groove, a first limiting slide key is fixedly connected in the first strip-shaped groove, and the upper end of the first limiting slide key protrudes out of the opening of the first strip-shaped groove and is embedded in the first through groove 24; the second through groove 33 that vertically sets up along the level is seted up to 3 bottoms of pinch-off blades, and second bar groove 18 has been seted up to 1 upside of base plate corresponding second through groove 33 department, and the rigid coupling has spacing feather key 19 of second in the second bar groove 18, and the spacing feather key 19 upper end of second protrudes the opening in second bar groove 18 and inlays in second through groove 33. In this embodiment, a first connection hole is formed in the bottom of one end of the first strip-shaped groove, the first limiting sliding key is a strip-shaped block matched with the first strip-shaped groove, a third counter bore is formed in a position, corresponding to the first connection hole, of one end of the first limiting sliding key, and the first limiting sliding key and the substrate 1 are fixed together through the bolt connection of a second fixing screw, the third counter bore and the first connection hole; a second connecting hole is formed in the bottom of one end of the second strip-shaped groove 18, the second limiting sliding key 19 is a strip-shaped block matched with the second strip-shaped groove 18, a fourth counter bore is formed in one end of the second limiting sliding key 19 corresponding to the second connecting hole, and the second limiting sliding key 19 and the substrate 1 are fixedly connected with the fourth counter bore and the second connecting hole through a third fixing screw 110 in a threaded mode; horizontal limiting is carried out on the positioning plate 2 through the matching of the first through groove 24 and the first limiting sliding key, horizontal limiting is carried out on the clamping plate 3 through the matching of the second through groove 33 and the second limiting sliding key 19, and the situation that the positioning plate 2 and the clamping plate 3 are displaced when the seawater pump shell 9 is clamped and rotates is guaranteed. In the present embodiment, the first through groove 24 is located between the two fourth mounting holes, and the second through groove 33 is located between the two third mounting holes 32.
Every locating plate 2 is gone up and is all equipped with two seventh mounting holes corresponding connecting seat 4 department, and the eighth mounting hole has been seted up corresponding seventh mounting hole department on connecting seat 4, and connecting seat 4 passes through fourth bolt 41 and seventh mounting hole, eighth mounting hole cooperation spiro union on locating plate 2.
A first fixing hole is formed in the surface of one side, provided with the pressing plate 6, of the connecting seat 4, a first positioning hole communicated with the first fixing hole is formed in the side wall, adjacent to the side wall where the first fixing hole is located, of the connecting seat 4, and the tail end of the connecting piece 5 is inserted into the first positioning hole and fixedly connected with the connecting piece 5 through a first screw 42 in the first positioning hole; the upper side and the lower side of the front end of the connecting piece 5 are both designed to be of a plane structure, a through hole 51 is vertically formed in the upper side and the lower side, a strip-shaped hole 63 is horizontally formed in the front side of the pressing plate 6 corresponding to the connecting piece 5, vertical through holes 64 are oppositely formed in the upper side and the lower side of the strip-shaped hole 63, the front end of the connecting piece 5 is inserted into the strip-shaped hole 63 of the pressing plate 6, and the pressing plate 6 is movably connected to the front end of the connecting piece 5 through the matching of a vertically arranged rotating pin 8, the through holes 64 and the through hole 51; the pressing plate 6 is provided with a second threaded hole 65 at the outer side of the inner end of the strip-shaped hole 63, a third threaded hole 66 at the outer side of the outer end of the strip-shaped hole 63, a balance pin 61 is screwed in the second threaded hole 65, and an auxiliary positioning pin 62 is screwed in the third threaded hole 66. In this embodiment, a first threaded hole is formed at a position corresponding to the first screw 42 at the tail end of the connecting member 5; the circumference surface that lies in 6 upsides of clamp plate and lies in 6 downside departments of clamp plate on changeing round pin 8 all is equipped with annular spacing groove, and equal joint has retaining ring 81 in annular spacing inslot, changes round pin 8 through the restriction of two retaining rings 81 in the position of vertical direction, avoids changeing round pin 8 and clamp plate 6 and breaks away from. Simultaneously, set up balancing pin 61 in mounting panel 91 lower extreme both corners department, can suitably increase the area of contact of clamp plate 6 and stress point, improve the stability of clamp plate 6, guarantee that sea water pump casing 9 fastens reliably in this anchor clamps.
The first positioning pin 21 and the second positioning pin 22 on the two positioning plates 2 are respectively distributed in diagonal directions, that is, the first positioning pin 21 is arranged at the upper end of one of the positioning plates 2, the second positioning pin 22 is arranged at the lower end of the one of the positioning plates 2, the second positioning pin 22 is arranged at the upper end of the other one of the positioning plates 2, and the first positioning pin 21 is arranged at the lower end of the other one of the positioning plates 2; a first end cap 211 which is positioned at the front side of the positioning plate 2 and has an outer end with a vertical plane structure is integrally arranged at the front end of the first positioning pin 21, a second end cap 221 which is positioned at the front side of the positioning plate 2 and has an outer end with a vertical plane structure is integrally arranged at the front end of the second positioning pin 22, and an insertion block 222 which can be inserted into a positioning pin hole on the mounting plate 91 is integrally arranged at the front side of the second end cap 221; the positioning plate 2 is provided with second fixing holes corresponding to the first positioning pin 21 and the second positioning pin 22, one side of the positioning plate 2 is provided with second positioning holes which are communicated with the second fixing holes and are perpendicular to each other, the first positioning pin 21 and the second positioning pin 22 are inserted into the corresponding second fixing holes, and the second positioning holes are fixed on the positioning plate 2 through second screws 23. In this embodiment, the cross section of the insertion block 222 on the second positioning pin 22 at the lower end of the positioning plate 2 is set to be diamond-shaped, so that a design of one surface and two pins is adopted, which not only ensures the positioning accuracy, but also avoids the over-positioning condition; the section of the insertion block 222 on the second positioning pin 22 at the upper end of the other positioning plate 2 is set to be circular, so that the positioning surface is supported, the contact area of the positioning surface is reduced, and the support precision is improved.
Two fastening pins 31 are distributed on each clamping plate 3 from top to bottom, a fourth threaded hole 34 is formed in the position, corresponding to the fastening pin 31, of each clamping plate 3, and the fastening pin 31 is screwed in the fourth threaded hole 34.
The working process of the embodiment is as follows:
the sea water pump shell 9 is of an asymmetric complex special-shaped structure, the mounting plate 91 on one side of the sea water pump shell is of a plane structure and has the largest area, and the mounting plate is suitable for being used as a main positioning reference, so that the mounting plane is selected as a plane positioning reference.
When in use, the connecting disc 7 is fixedly connected in a three-grab chuck of a machine tool, the substrate 1 is fixed on the machine tool, the seawater pump shell 9 is placed between the clamping plate 3 and the positioning plate 2, the mounting plate 91 of the seawater pump shell 9 is abutted against the first positioning pin 21 and the second positioning pin 22, then the fastening pin 31 on the clamping plate 3 is screwed to make the end portion abutted against the connecting plate 92 on the other side of the seawater pump shell 9, the positions of the two pressing plates 6 are adjusted, the balance pin 61 is screwed to be abutted against the front side wall of the mounting plate 91 of the seawater pump shell 9, the auxiliary positioning pin 62 is screwed to be abutted against the connecting seat 4, the rear side wall of the mounting plate 91 is abutted against the front side wall of the mounting plate 91 through the first positioning pin 21 and the second positioning pin 22, and the balance pin 61 is abutted against the front side wall of the mounting plate 91 through the cooperation of the auxiliary positioning pin 62, and the balance pin 61 is restricted by the cooperation of the auxiliary positioning pin 62, so as to ensure that the position of the balance pin 61 can not change, namely, the mounting plate 91 is ensured to be entirely in a vertical plane without being skewed, and finally the fastening pin 31 is adjusted to abut against the connecting plate 92.
The whole clamp is of an eccentric structure, namely the center of gravity is not located at the center of the clamp, a floating positioning structure is arranged on the positioning plate 2 in consideration of the stress condition of the seawater pump shell 9 in the turning process, namely, the pressing plate 6 which can horizontally rotate on the connecting seat 4, and a connecting structure consisting of the balancing pin 61 and the auxiliary positioning pin 62 which are located at two ends of the pressing plate 6 are adjusted and locked after floating positioning is carried out, so that the inclined torque formed after the seawater pump shell 9 is subjected to axial cutting component force is offset, and the stress deformation of the shell is reduced to the maximum extent.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a sea water pump casing turning special fixture which characterized in that: the sea water pump shell comprises a base plate, clamp plate and locating plate, base plate upper surface one side is equipped with two locating plates relatively, the opposite side is equipped with two clamp plates relatively, the equal rigid coupling in one side that two locating plates carried on the back mutually has the connecting seat, the connecting seat front side all is equipped with the clamp plate that can rotate along the axle in the horizontal plane, every clamp plate inner all is equipped with the balancing pin that can support tightly with the mounting panel front side of sea water pump shell one side, the outer end all is equipped with the auxiliary positioning round pin that can support tightly with the connecting seat, one side of orientation clamp plate is equipped with about distributing and can support tightly first locating pin and second locating pin with the mounting panel rear side on the locating plate, all be equipped with on every clamp plate towards locating plate orientation level setting and can support tightly the fastening pin with the connecting plate of sea water pump shell opposite side.
2. The special turning clamp for the sea water pump shell as claimed in claim 1, wherein: the base plate is characterized by further comprising a connecting disc fixedly connected to the bottom of the base plate, the connecting disc is arranged into a plurality of step structures which are inwards concave in sequence from top to bottom, and the base plate and the connecting disc are fixedly connected together through a plurality of first bolts which are uniformly distributed.
3. The special turning clamp for the sea water pump shell as claimed in claim 2, wherein: the middle of the substrate is provided with a first through hole, the middle of the connecting disc is provided with a second through hole aligned with the first through hole, an annular convex edge is arranged on the upper side of the connecting disc upwards along the circumferential direction of the second through hole, the bottom of the substrate is located on the outer side of the first through hole, a first limiting groove corresponding to the annular convex edge is circumferentially arranged on the outer side of the first through hole, and the annular convex edge is located in the first limiting groove.
4. The special turning clamp for the sea water pump shell as claimed in claim 3, wherein: the upper surface of the connecting disc is provided with a first counter bore at the outer side of the annular convex edge, a limiting part is arranged in the upper end of the first counter bore, the upper surface of the limiting part protrudes out of the opening at the upper end of the first counter bore, a second counter bore penetrates through the upper surface of the limiting part, the limiting part is fixed in the first counter bore through the first fixing screw penetrating through the second counter bore and in threaded fit with the first counter bore, the bottom of the substrate corresponds to the limiting part and is provided with a second limiting groove, and the limiting part protrudes out of the first counter bore and is embedded in the second limiting groove.
5. The special turning clamp for the sea water pump shell as claimed in claim 1, wherein: the clamping plate and the base plate are fixedly connected together through a second bolt, and the positioning plate and the base plate are fixedly connected together through a third bolt.
6. The special turning clamp for the sea water pump shell as claimed in claim 1, wherein: the bottom of the positioning plate is provided with a first through groove which is horizontally and longitudinally arranged, the upper side of the base plate corresponding to the first through groove is provided with a first strip-shaped groove, a first limiting slide key is fixedly connected in the first strip-shaped groove, and the upper end of the first limiting slide key protrudes out of the opening of the first strip-shaped groove and is embedded in the first through groove; the bottom of the clamping plate is provided with a second through groove longitudinally arranged along the horizontal direction, the upper side of the substrate is provided with a second strip-shaped groove corresponding to the second through groove, a second limiting sliding key is fixedly connected in the second strip-shaped groove, and the upper end of the second limiting sliding key protrudes out of the opening of the second strip-shaped groove and is embedded in the second through groove.
7. The special turning clamp for the sea water pump shell as claimed in claim 1, wherein: and two seventh mounting holes are formed in each positioning plate corresponding to the connecting seat, eighth mounting holes are formed in the connecting seat corresponding to the seventh mounting holes, and the connecting seat is in matched threaded connection with the seventh mounting holes and the eighth mounting holes through fourth bolts on the positioning plates.
8. The special turning clamp for the sea water pump shell as claimed in claim 1, wherein: a first fixing hole is formed in the surface of one side, provided with a pressing plate, of the connecting seat, a first positioning hole communicated with the first fixing hole is formed in the side wall, adjacent to the side wall where the first fixing hole is located, of the connecting seat, and the tail end of the connecting piece is inserted into the first positioning hole and fixedly connected with the connecting piece through a first screw in the first positioning hole; the upper side and the lower side of the front end of the connecting piece are both designed into a plane structure and are vertically provided with through holes, the front side of the pressing plate corresponding to the connecting piece is horizontally provided with a strip-shaped hole, the upper side and the lower side of the strip-shaped hole are oppositely provided with vertical through holes, the front end of the connecting piece is inserted into the strip-shaped hole of the pressing plate, and the pressing plate is movably connected to the front end of the connecting piece through the matching of a vertically arranged rotating pin, the through holes and the through holes; the pressing plate is provided with a second threaded hole at the outer side of the inner end of the strip-shaped hole, a third threaded hole at the outer side of the outer end of the strip-shaped hole, the second threaded hole is internally screwed with a balance pin, and the third threaded hole is internally screwed with an auxiliary positioning pin.
9. The special turning clamp for the sea water pump shell as claimed in claim 1, wherein: the first positioning pins and the second positioning pins on the two positioning plates are respectively distributed in an opposite angle mode, the front ends of the first positioning pins are integrally provided with first end caps which are positioned on the front sides of the positioning plates, the outer ends of the first end caps are of a vertical plane structure, the front sides of the second positioning pins are integrally provided with second end caps which are positioned on the front sides of the positioning plates, the outer ends of the second end caps are of a vertical plane structure, and the front sides of the second end caps are integrally provided with inserting blocks which can be inserted into positioning pin holes in the mounting plates; the first positioning pin and the second positioning pin are inserted into the corresponding second fixing holes and are fixed on the positioning plate through second screws in the second positioning holes.
10. The special fixture for turning the shell of the seawater pump as claimed in claim 1, wherein: two fastening pins are distributed on each clamping plate from top to bottom, a fourth threaded hole is formed in the corresponding fastening pin position on each clamping plate, and each fastening pin is screwed in each fourth threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210721761.0A CN115070447B (en) | 2022-06-24 | 2022-06-24 | Special fixture for turning sea water pump shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210721761.0A CN115070447B (en) | 2022-06-24 | 2022-06-24 | Special fixture for turning sea water pump shell |
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| CN115070447A true CN115070447A (en) | 2022-09-20 |
| CN115070447B CN115070447B (en) | 2024-01-12 |
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| CN202210721761.0A Active CN115070447B (en) | 2022-06-24 | 2022-06-24 | Special fixture for turning sea water pump shell |
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