CN115008232A - Positioning device and method for replacing same hinge of marine crankshaft and ship shafting flange holes - Google Patents
Positioning device and method for replacing same hinge of marine crankshaft and ship shafting flange holes Download PDFInfo
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- CN115008232A CN115008232A CN202210623336.8A CN202210623336A CN115008232A CN 115008232 A CN115008232 A CN 115008232A CN 202210623336 A CN202210623336 A CN 202210623336A CN 115008232 A CN115008232 A CN 115008232A
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- flange
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- positioning
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- 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
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
Abstract
The invention provides a positioning device and a method for replacing the same hinge of a marine crankshaft and a ship shafting flange hole. The template main body is used as a processing reference in the process of processing the flange connecting holes of the crankshaft flange and the shafting flange, and plays a transition role. After the processing, the crankshaft flange and the ship shafting flange can be directly butted and fixed in a high-precision manner, and the processing after the assembly and the alignment in the cabin is not needed any more, so that the difficulty is reduced, and the processing efficiency and the product quality are obviously improved.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a positioning device and a positioning method for replacing the same hinge of a marine crankshaft and a ship shafting flange hole.
Background
The butt joint precision requirement of the connecting hole between the marine crankshaft output end flange and the ship body shafting flange is extremely high, and the diameter exceeds that of the connecting hole
(maximum)
) After flange connection coaxiality
The requirement of the position degree of the alignment connecting hole is 0.04mm, the requirement of the hole size tolerance is within 0.01mm, a plurality of connecting holes are uniformly distributed on the circumferences of the output end flange of the marine crankshaft and the end surface of the hull shafting flange, the output end flange connecting hole of the crankshaft and the hull shafting flange connecting hole are respectively subjected to semi-finishing according to the required allowance during manufacturing, and finally, after the alignment is assembled in a cabin by a shipyard, the alignment of the flange connecting holes at two ends is ensured
And (5) under the premise of coaxiality, hinging the two connecting holes together to finish the finished product. Because the space in the cabin is limited, and the overall dimensions of the crankshaft flange and the shafting flange are large, taking a W12X92 crankshaft as an example, the length of the crankshaft is 23.519 meters, the weight is 488 tons, the large crankshaft is difficult to align, meanwhile, high-precision large-scale equipment cannot be used, only simple equipment can be used for same-hinge machining,the machining efficiency is low, manpower and material resources are greatly wasted, meanwhile, the hole precision cannot be effectively guaranteed, and the hole is required to be matched with a delicate bolt after the hole is completely finished, so that the production period is prolonged.
Disclosure of Invention
According to the technical problems, the positioning device and the positioning method for replacing the same hinge of the marine crankshaft and the ship shafting flange hole are provided.
The technical means adopted by the invention are as follows:
a positioning device for replacing the same hinge of a marine crankshaft and a ship shafting flange hole comprises a template main body, wherein the template main body is in a ring shape, positioning end faces in circular grooves are respectively processed on the end faces of two sides of the template main body, and a positioning spigot is formed on the groove wall of each positioning end face; two location terminal surfaces are coaxial to be set up, and the outer edge processing of location tang has the guide cone slightly, and the installation of being convenient for is carved with respectively to the both sides of template main part and is adjusted the datum line well. The flange to be processed is arranged in the positioning end face through the positioning spigot and the excircle of the flange is ensured to be coaxial with the positioning spigot circle, the flange to be processed is a marine crankshaft flange and/or a hull shafting flange, and the two positioning spigots are respectively matched with the excircle of the marine crankshaft flange and the excircle of the hull shafting flange; the positioning end face has higher flatness requirement, and the end face of the flange to be processed is completely attached to the positioning end face; through holes matched with the flange connecting holes of the flange to be processed in number are formed in the positioning end face, threaded holes are formed in the template main body beside all the through holes, and positioning screws are installed in the threaded holes.
A bushing is arranged in the through hole and is in interference fit with the through hole; the length of the bush is smaller than that of the through hole.
A plurality of groups of connecting mechanisms penetrate through the through holes to fix the excircle of the flange to be processed in the positioning spigot; the connecting mechanism comprises a double-end stud, two ends of the double-end stud respectively penetrate through the through hole and the flange connecting hole of the flange to be processed, two ends of the double-end stud respectively penetrate through the first fixing pressing plate and the second fixing pressing plate, and the first fixing pressing plate and the second fixing pressing plate enable the flange to be processed and the template main body to be pressed tightly through nuts. First stationary platen and second stationary platen all have the central through-hole that supplies stud to pass, and first stationary platen and second stationary platen all include tip and main aspects, the tip of first stationary platen and the flange joint hole internal diameter looks adaptation of waiting to process the flange to penetrate in the flange joint hole of waiting to process the flange, the tip of second stationary platen and the internal diameter looks adaptation of bush, and penetrate in the bush.
And a guide sleeve in clearance fit with the lining is arranged in the through hole corresponding to the connecting hole of the flange to be processed, and the guide sleeve has enough hardness and wear resistance. The guide sleeve is in a stepped hollow cylindrical ring shape, the large end of the guide sleeve is positioned outside the through hole, and a flange stop table is arranged on the guide sleeve and is provided with a positioning arc for installing a positioning screw to prevent the guide sleeve from rotating; the small end of the flange is arranged in the bushing, and the inner hole of the flange is matched with the pre-processing size of the flange connecting hole to be processed of the flange to be processed, and the flange is used as a processing reference and plays a role in guiding the cutting of the cutter.
The invention also discloses a method for replacing the same hinge of the marine crankshaft and the ship shafting flange hole, which comprises the following steps:
A. reserving a flange connecting hole of a flange to be processed for semi-finishing a finished product; the flange to be processed is a marine crankshaft flange and/or a ship shafting flange;
B. installing a template main body: the positioning end face at one side of the template main body is completely attached to the end face of the flange to be processed through the positioning spigot, and the template main body is fixedly connected with the flange to be processed by using a plurality of groups of connecting mechanisms;
C. installing a guide sleeve on the lining corresponding to the flange connecting hole of the flange to be processed, and fixing the guide sleeve on the template main body by using a positioning screw;
D. the main shaft of the boring machine determines the center by taking the inner hole of the guide sleeve as a reference, a cutter is arranged, and the cutter reams and processes the flange connecting hole to be processed (the size range of the crankshaft connecting holes with different specifications) after passing through the inner hole of the guide sleeve
) Machining size of connecting holeTolerance of 0.01mm, out-of-roundness of 0.005 mm;
E. and D, repeating the steps C and D to process all the flange connecting holes to be processed into connecting product holes. Of course, when the flange connection hole having the connection mechanism is processed, the connection mechanism needs to be installed in another flange connection hole and processed.
Compared with the prior art, the invention has the following advantages:
1. the template main body is used as a processing reference in the process of processing the flange connecting holes of the crankshaft flange and the shafting flange, and plays a transition role. After the processing, the crankshaft flange and the hull shafting flange can be directly butted and fixed, and the processing after the assembly and the alignment in the cabin is not needed, so that the difficulty of the same hinge processing of the crankshaft flange and the hull shafting flange is reduced, and the processing efficiency and the product quality are obviously improved.
2. Reasonable in design, simple structure, easily installation, precision height.
3. The used bush of this application protects the precision of through hole, but manifold cycles utilizes, extension template life.
Based on the reason, the invention can be widely popularized in the fields of the same hinge of the marine crankshaft and the ship shafting flange hole and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a top view of a positioning device for co-hinging a crankshaft for a ship and a flange hole of a ship shafting in an embodiment of the invention.
Fig. 2 is a side view and a partially enlarged view of an alternative positioning device for co-hinging a marine crankshaft and a ship shafting flange hole according to an embodiment of the invention.
FIG. 3 is a top view of a die plate body in accordance with an embodiment of the present invention.
Fig. 4 is a schematic view of a bushing structure according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a guide sleeve according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a first fixed pressing plate and a second fixed pressing plate in the embodiment of the present invention.
Fig. 7 is a diagram of a flange to be machined and a positioning device according to an embodiment of the present invention.
In the figure: 1. a template body; 11. positioning a spigot; 12. a guide cone tip; 13. aligning the reference line; 14. a through hole; 15. a silk hole; 16. positioning the end face; 2. a bushing; 3. a guide sleeve; 31. stopping the flange; 4. a set screw; 5. a first stationary platen; 6. a stud; 7. a nut; 8. a flange to be processed; 9. and a second fixed pressing plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
Example 1
As shown in figures 1-7, the positioning device for replacing the same hinge of the marine crankshaft and the ship shafting flange hole comprises a template main body 1, wherein the template main body 1 is in a ring shape, positioning end faces 16 in the form of circular grooves are respectively machined on the end faces of two sides of the template main body 1, the two positioning end faces and the template main body 1 are coaxially arranged, a positioning spigot 11 is formed on the groove wall of the positioning end face 16, a guide cone tip 12 is machined on the outer edge of the positioning spigot 11, the installation is convenient, and alignment reference lines 13 are respectively carved on two sides of the template main body 1. The flange 8 to be processed is arranged in the positioning end face 16 through the positioning spigot 11, and the flange 8 to be processed is a marine crankshaft flange and a ship shafting flange; the positioning end face 16 has a higher flatness requirement, and the end face of the flange 8 to be processed is attached to the positioning end face 16; through holes 14 matched with the number of the flange connecting holes of the flange 8 to be processed are formed in the positioning end face 16, screw holes 15 are formed beside all the through holes 14 in the template main body 1, and positioning screws 4 are installed in the screw holes 15.
A bushing 2 is arranged in the through hole 14, and the bushing 2 is in interference fit with the through hole 14; the length of the bush 2 is smaller than the length of the through-hole 14.
A plurality of groups of connecting mechanisms penetrate through the through holes 14 to fix the outer circle of the flange 8 to be machined in the positioning spigot 11; the connecting mechanism comprises a double-end stud 6, two ends of the double-end stud 6 respectively penetrate through the through hole 14 and a flange connecting hole of the flange 8 to be processed, two ends of the double-end stud 6 respectively penetrate through the first fixing pressing plate 5 and the second fixing pressing plate 9, and the first fixing pressing plate 5 and the second fixing pressing plate 9 are tightly pressed with the flange 8 to be processed and the template main body 1 through nuts 7. First stationary platen 5 and second stationary platen 9 all have the central through-hole that supplies stud 6 to pass, and first stationary platen 5 and second stationary platen 9 all include tip and main aspects, the tip of first stationary platen 5 and the flange joint hole internal diameter looks adaptation of waiting to process flange 8 to penetrate and wait to process in the flange joint hole of flange 8, the tip of second stationary platen 9 and the internal diameter looks adaptation of bush 2, and penetrate in the bush 2.
And a guide sleeve 3 which is in clearance fit with the lining 2 is arranged in a through hole 14 corresponding to the flange connecting hole to be processed of the flange 8 to be processed, and has enough hardness and wear resistance. The guide sleeve 3 is in a shape of a stepped hollow cylindrical ring, the large end of the guide sleeve is positioned outside the through hole, and a flange stop table 31 is arranged on the guide sleeve and is provided with a positioning arc for installing a positioning screw 4 to prevent the guide sleeve 3 from rotating; the small end of the cutter is arranged in the lining 2, and the inner hole of the cutter is matched with the pre-processing size of the flange connecting hole to be processed of the flange 8 to be processed, and the cutter is used as a processing reference and plays a role in guiding the cutting of the cutter.
Example 2
As shown in fig. 1 to 7, on the basis of embodiment 1, the invention further discloses a method for replacing the same hinge of the marine crankshaft and the ship shafting flange hole, which comprises the following steps:
A. reserving a semi-finished product for flange connecting holes of a marine crankshaft flange and a hull shafting flange;
B. installing the template main body 1: the positioning end face 16 at one side of the template main body 1 is completely attached to the end face of the marine crankshaft flange through the positioning spigot 11, meanwhile, the positioning spigot 11 and the excircle of the marine crankshaft flange are in a concentric state, and the template main body 1 is fixedly connected with the marine crankshaft flange by using four groups of connecting mechanisms; the four groups of connecting mechanisms are symmetrically arranged at four points.
C. Installing a guide sleeve 3 in a bushing 2 corresponding to a flange connecting hole to be processed of a marine crankshaft flange, and fixing the guide sleeve 3 on a template main body 1 by using a positioning screw 4; and the guide sleeve 3 is prevented from rotating along with the cutter during machining, so that the machining effect is prevented from being influenced.
D. The boring machine main shaft determines the center by taking the inner hole of the guide sleeve as a reference, a cutter is installed, the cutter slowly passes through the inner hole of the guide sleeve, and a flange connecting hole to be machined of the marine crankshaft flange is reamed after guiding so as to form a connecting finished product hole;
E. and C, repeating the steps C and D to process all the flange connecting holes to be processed of the marine crankshaft flange into connecting product holes. Of course, when the flange connection hole having the connection mechanism is processed, the connection mechanism needs to be installed in another flange connection hole and processed. After waiting to process the flange connecting hole and becoming the finished product connecting hole, should adopt the external diameter with finished product connecting hole looks adaptation to the tip of first fixed stop 4, perhaps because original waiting to process the flange connecting hole and already be the allowance semi-finishing, the tip that does not change first fixed stop 4 also can realize its fixed in the middle.
F. And D, detaching the template main body 1, attaching a positioning end face 16 on the other side of the template main body 1 to the end face of the ship shafting flange through the positioning spigot 11, and then repeating the steps C-E to process all the flange connecting holes to be processed of the ship shafting flange into connecting product holes, so that the same hinge of the flange connecting holes of the ship crankshaft and the ship shafting flange is completed, and the efficient and reliable quick butt joint of the ship crankshaft flange and the ship shafting flange is realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A positioning device for replacing the same hinge of a marine crankshaft and a ship shafting flange hole is characterized by comprising a template main body, wherein the template main body is annular, positioning end faces in the shape of circular grooves are respectively machined on the end faces of two sides of the template main body, and a positioning spigot is formed on the groove wall of each positioning end face; the two positioning end faces are coaxially arranged, and the flange to be processed is arranged in the positioning end faces through the positioning spigot;
through holes matched with the number of the flange connecting holes of the flange to be processed are formed in the positioning end face, bushings are installed in the through holes, and the bushings are in interference fit with the through holes;
the multiple groups of connecting mechanisms penetrate through the through holes to fix the outer circle of the flange to be machined in the positioning end face;
a guide sleeve in clearance fit with the lining is arranged in the through hole corresponding to the connecting hole of the flange to be processed, screw holes are formed beside all the through holes in the template main body, and the screw holes are used for installing and fixing screws of the guide sleeve; the inner diameter of the guide sleeve is matched with the preprocessing size of the flange connecting hole to be processed;
the flange to be processed is a marine crankshaft flange and/or a ship shafting flange.
2. The positioning device for replacing the common hinge of the marine crankshaft and the ship shafting flange hole according to claim 1, wherein the connecting mechanism comprises a stud, two ends of the stud respectively penetrate through the through hole and the flange connecting hole of the flange to be processed, and two ends of the stud respectively penetrate through a first fixing pressing plate and a second fixing pressing plate and are pressed tightly through nuts, so that the flange to be processed and the template main body are pressed tightly by the first fixing pressing plate and the second fixing pressing plate.
3. The positioning device for replacing the same hinge of the marine crankshaft and the ship shafting flange hole as well as the marine crankshaft and the ship shafting flange hole as claimed in claim 1, characterized in that the first fixed pressing plate and the second fixed pressing plate are both provided with a central through hole for the stud to pass through, and each of the first fixed pressing plate and the second fixed pressing plate comprises a small end and a large end, the small end of the first fixed pressing plate is adapted to the inner diameter of the flange connecting hole of the flange to be processed and penetrates into the flange connecting hole of the flange to be processed, and the small end of the second fixed pressing plate is adapted to the inner diameter of the bushing and penetrates into the bushing.
4. The positioning device for replacing the common hinge of the marine crankshaft and the ship body shafting flange hole according to claim 1, wherein a guide cone tip is machined on the outer edge of the positioning spigot.
5. The alternative marine crankshaft and hull shafting flange hole co-articulation positioning device according to claim 1, wherein said bushing has a length less than the length of said through hole.
6. The positioning device for replacing the common hinge of the marine crankshaft and the ship shafting flange hole according to claim 1, wherein the guide sleeve is in a shape of a stepped hollow cylindrical ring, the large end of the guide sleeve is positioned outside the through hole and is provided with a flange stop table, and a positioning arc is arranged on the flange stop table and is used for installing the positioning screw; the small end of the flange is arranged in the bushing, and the inner hole of the flange is matched with the preprocessing size of the flange connecting hole to be processed of the flange to be processed.
7. The positioning device for replacing the common hinge of the marine crankshaft and the ship shafting flange hole according to claim 1, wherein alignment reference lines are respectively engraved on two sides of the template main body.
8. A method for replacing a ship crankshaft and a ship shafting flange hole to be co-hinged is characterized in that the positioning device of any one of claims 1 to 7 is used, and comprises the following steps:
A. reserving a semi-finished product for the flange connecting hole of the flange to be processed; the flange to be processed is a marine crankshaft flange and/or a ship shafting flange;
B. installing the template main body: the positioning end face of the template main body is completely attached to the end face of the flange to be processed through the positioning spigot, and the template main body is fixedly connected with the flange to be processed through a plurality of groups of connecting mechanisms;
C. installing the guide sleeve on the lining corresponding to the flange connecting hole of the flange to be processed, and fixing the guide sleeve on the template main body by using the positioning screw;
D. the boring machine main shaft determines the center by taking the inner hole of the guide sleeve as a reference, a cutter is installed, and the cutter reams and processes the flange connecting hole to be processed after passing through the inner hole of the guide sleeve to enable the flange connecting hole to be a connecting finished product hole;
E. and D, repeating the steps C and D to process all the flange connecting holes to be processed into connecting product holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210623336.8A CN115008232A (en) | 2022-06-01 | 2022-06-01 | Positioning device and method for replacing same hinge of marine crankshaft and ship shafting flange holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210623336.8A CN115008232A (en) | 2022-06-01 | 2022-06-01 | Positioning device and method for replacing same hinge of marine crankshaft and ship shafting flange holes |
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| Publication Number | Publication Date |
|---|---|
| CN115008232A true CN115008232A (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210623336.8A Pending CN115008232A (en) | 2022-06-01 | 2022-06-01 | Positioning device and method for replacing same hinge of marine crankshaft and ship shafting flange holes |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101664818A (en) * | 2009-09-26 | 2010-03-10 | 东方电气集团东方汽轮机有限公司 | Boring jig, manufacturing method thereof and method for processing flange connection holes of generator set rotors using boring jig |
| CN203197321U (en) * | 2012-11-29 | 2013-09-18 | 南车洛阳机车有限公司 | Drilling jig auxiliary device for crankshaft flange hole of diesel engine |
| CN103447829A (en) * | 2013-09-11 | 2013-12-18 | 南通中远川崎船舶工程有限公司 | Processing and mounting process of ship shafting connecting flange |
| CN206122811U (en) * | 2016-08-31 | 2017-04-26 | 抚州申铃汽车配件有限责任公司 | Semi -axis fraising mould |
| CN206169355U (en) * | 2016-10-27 | 2017-05-17 | 大连卓远重工有限公司 | A location jig that is used for branch spot facing works such as round hole flange face |
-
2022
- 2022-06-01 CN CN202210623336.8A patent/CN115008232A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101664818A (en) * | 2009-09-26 | 2010-03-10 | 东方电气集团东方汽轮机有限公司 | Boring jig, manufacturing method thereof and method for processing flange connection holes of generator set rotors using boring jig |
| CN203197321U (en) * | 2012-11-29 | 2013-09-18 | 南车洛阳机车有限公司 | Drilling jig auxiliary device for crankshaft flange hole of diesel engine |
| CN103447829A (en) * | 2013-09-11 | 2013-12-18 | 南通中远川崎船舶工程有限公司 | Processing and mounting process of ship shafting connecting flange |
| CN206122811U (en) * | 2016-08-31 | 2017-04-26 | 抚州申铃汽车配件有限责任公司 | Semi -axis fraising mould |
| CN206169355U (en) * | 2016-10-27 | 2017-05-17 | 大连卓远重工有限公司 | A location jig that is used for branch spot facing works such as round hole flange face |
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