Water-lubricated bearing integral splicing type board processing technology

Abstract

The present application relates to large ship propulsion system technical field, specifically relates to a kind of water-lubricated bearing integral splicing strip processing technology.The present application adopts the machining procedure of first separately high-precision processing strip material wedge surface, then integrally splicing processing strip material outer circle, can simultaneously ensure the requirement of strip and strip, strip and bushing adhesion when assembling;Based on the temperature characteristics of strip material, water-lubricated bearing strip assembly work is carried out using liquid nitrogen freezing method, to ensure the structural stability of strip working temperature;Using the process flow of first assembly, then integrally processing strip inner hole, while reducing the difficulty of strip splicing assembly, can effectively ensure that the cylindrical degree and coaxiality of bearing inner hole after assembly meet the use requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of large ship propulsion systems, in particular to a water-lubricated bearing integral splicing type strip processing technology. BACKGROUND

[0002] The integral splicing type water-lubricated bearing strip structure has the following main features: ①the bearing bush is splicing type and is integrally formed by splicing a plurality of bearing bushes of different specifications; ②the bearing bush is in a cylindrical shape, and a plurality of bearing bush water grooves are arranged in the inner ring.

[0003] The water-lubricated bearing strip processing method of the prior art cannot guarantee the fit of the strips of different specifications, and the splicing and assembly of the processed strips are difficult, and the cylindricality and coaxiality of the bearing inner hole after splicing cannot be guaranteed. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a water-lubricated bearing integral splicing type strip processing technology to solve the problems of the prior art, guarantee the fit of the splicing type strips, reduce the splicing and assembly difficulty of the strips, and ensure that the cylindricality and coaxiality of the bearing inner hole after assembly meet the process requirements.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is:

[0006] The present application provides a water-lubricated bearing integral splicing type strip processing technology, which mainly includes the following steps:

[0007] S1, bearing bush plate material blanking processing, processing the strip blank into a bearing bush strip with a predetermined profile;

[0008] S2, splicing bevel and water groove bevel processing of the bearing bush strip;

[0009] S3, using an inner hole support tool, an outer circle locking ring and a jacking bolt to splicing a plurality of bearing bush strips in the circumferential direction to form a cylindrical bearing bush structure;

[0010] S4, outer circle reference surface and inner hole reference surface processing of both ends of the cylindrical bearing bush structure;

[0011] S5, installing an inner hole center plug and a bearing bush outer circle locking ring at both ends of the cylindrical bearing bush structure;

[0012] S6, turning the outer circle surface of the middle cylinder of the cylindrical bearing bush structure;

[0013] S7, sequentially label and record each bushing strip in sequence along the circumference, and disassemble the bushing strip;

[0014] S8, sequentially assemble the disassembled bushing strip into the bearing bush in sequence by cold assembly;

[0015] S9, according to the process requirement, finish machining the inner hole of the assembled bushing.

[0016] Preferably, in step S1, the bushing plate material blanking process specifically includes the following steps:

[0017] S11, according to the preset plate strip processing outer contour 1, set plate strip blanking line 3 on plate strip blank 2;

[0018] S12, contour machining the plate strip blank 2 on the machine tool according to the plate strip blanking line 3;

[0019] S13, the plate strip blank 2 retains a preset length as a plate strip process chuck 5 at both ends along the length direction.

[0020] Preferably, in step S2, the bushing plate strip splicing bevel and water groove bevel processing specifically includes the following steps:

[0021] S21, according to the preset plate strip circumferential angle, process plate strip splicing bevel 6 on both sides of the bushing plate strip;

[0022] S22, according to the preset water groove size, process plate strip water groove bevel 7 on the basis of plate strip splicing bevel 6;

[0023] S23, according to the preset bearing radius, sequentially process plate strip inner arc surface 8 and plate strip outer arc surface 9.

[0024] Preferably, in step S3, the plurality of bushing plate strips are spliced, specifically including the following steps:

[0025] S31, by cooperating the workpiece connecting screw rod 18 and the workpiece locking nut 19, install the plate strip inner hole supporting tool 17 to the splicing rack;

[0026] S32, arrange a plurality of bushing plate strips in sequence along the circumference on the outer circle of the plate strip inner hole supporting tool 17, and make the plurality of supporting columns arranged along the circumference on the outer circle of the plate strip inner hole supporting tool 17 respectively clamped in the water groove formed by the corresponding bushing plate strip splicing, and at the same time, set the plate strip back-pulling pad plate 16 on both sides of the plate strip inner hole supporting tool 17 to abut against the arranged bushing plate strip;

[0027] S33, the upper half ring and the lower half ring of the strip outer circle locking ring 10 are arranged on the outer circle of the plurality of strip outer ring blocks spliced in the circumferential direction, and the upper half ring and the lower half ring are fixedly connected by cooperation of the locking ring fixing bolt 11, the locking ring fixing nut 12 and the spring washer 13;

[0028] S34, a plurality of strip jacking bolts 14 are sequentially inserted into the outer circle of the strip outer circle locking ring 10 in the circumferential direction, and the strip jacking bolt 14 cooperates with the strip jacking nut 15 to jacking the corresponding bearing strip outer arc surface.

[0029] Preferably, in step S4, the outer circle reference surface and the inner hole reference surface are processed, specifically including the following steps:

[0030] S41, according to the preset bearing outer diameter, an outer circle reference processing surface 4-1 is processed on the outer circle surface of both ends of the cylindrical bearing structure;

[0031] S42, according to the preset bearing inner diameter, an inner hole reference processing surface 4-2 is processed on the inner circle surface of both ends of the cylindrical bearing structure;

[0032] S43, the end face of both ends of the cylindrical bearing structure is ground flat.

[0033] Preferably, in step S5, the inner hole center plug 20 is respectively installed in the inner hole of both ends of the cylindrical bearing structure, and the bearing outer circle locking ring 21 is respectively installed on the outer circle of both ends of the cylindrical bearing structure by cooperation of the bearing locking bolt 22, the bearing locking nut 23 and the spring washer 24.

[0034] Preferably, in step S6, the outer circle surface of the middle cylinder of the cylindrical bearing structure is processed to have a size suitable for the inner hole size of the water lubricated bearing bushing.

[0035] Preferably, in step S7, the bearing strip is disassembled, specifically including the following steps:

[0036] S71, the locking ring fixing bolt 11 and the strip outer circle locking ring 10 are sequentially disassembled;

[0037] S72, the strip pull-back pad 16 is loosened, and each bearing strip is sequentially taken out from the outer circle of the strip inner hole support tooling 17 in the circumferential direction.

[0038] Preferably, in step S8, the bearing bushing is formed by splicing the lower half bushing 25 and the upper half bushing 28 through cooperation of the bushing outer circle locking ring 30, the bushing locking nut 32 and the locking washer 33;

[0039] After the bearing strip is loaded into the bearing bushing, the upper stop copper strip 29, the lower stop copper strip 26 and the copper strip locking bolt 27 are cooperated to lock the bearing strip in the inner hole of the bearing bushing.

[0040] Preferably, in step S9, the bush hole is machined according to the preset roughness of the bush hole.

[0041] Compared with the prior art, the present application has the following main advantages:

[0042] 1. The present application adopts the machining procedure of separately machining the wedge surface of the plate strip material with high precision first and then machining the outer circle of the plate strip material as a whole, which can ensure the requirements of the plate strip-to-plate strip and plate strip-to-bushing adhesion during assembly;

[0043] 2. The present application adopts the liquid nitrogen freezing method to assemble the water-lubricated bearing plate strip based on the temperature characteristics of the plate strip material, which ensures the structural stability of the plate strip under working temperature;

[0044] 3. The present application adopts the process flow of assembling first and then machining the inner hole of the plate strip as a whole, which can effectively ensure that the cylindricity and coaxiality of the bearing inner hole after assembly meet the use requirements while reducing the assembly difficulty of the plate strip. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 is the plate strip blanking front view in the embodiment of the present application;

[0046] Figure 2 is the plate strip blanking side view in the embodiment of the present application;

[0047] Figure 3 is the plate strip process chuck schematic diagram in the embodiment of the present application;

[0048] Figure 4 is the plate strip splicing bevel and water tank bevel machining schematic diagram in the embodiment of the present application;

[0049] Figure 5 is the plate strip splicing schematic diagram in the embodiment of the present application;

[0050] Figure 6 is the plate strip two-end reference surface machining schematic diagram in the embodiment of the present application;

[0051] Figure 7 is the bushing mounting plug and locking ring schematic diagram in the embodiment of the present application;

[0052] Figure 8 is the bushing distribution schematic diagram in the embodiment of the present application;

[0053] Figure 9 is the bushing and bushing cold assembly front view in the embodiment of the present application;

[0054] Figure 10 is the bushing and bushing cold assembly side view in the embodiment of the present application;

[0055] Figure 11 is the front view of the bush hole machining in the embodiment of the present application;

[0056] Figure 12 is the side view of the bush hole machining in the embodiment of the present application.

[0057] In the figure: 1, the outer contour of the strip machining; 2, the strip blank; 3, the strip blanking score line; 4, the strip body; 4-1, the outer circle reference machining surface of the strip end; 4-2, the inner hole reference machining surface of the strip end; 5, the strip process chuck; 6, the strip splicing bevel; 7, the strip water groove bevel; 8, the strip inner circle arc surface; 9, the strip outer circle arc surface; 10, the strip outer circle locking ring; 11, the locking ring fixing bolt; 12, the locking ring fixing nut; 13, the spring washer; 14, the strip jacking bolt; 15, the strip jacking nut; 16, the strip back-pulling backing plate; 17, the strip inner hole support tooling; 18, the tooling connecting screw; 19, the tooling locking nut; 20, the bush hole center plug; 21, the bush outer circle locking ring; 22, the bush locking bolt; 23, the bush locking nut; 24, the spring washer; 25, the lower half bushing; 26, the lower stop copper bar; 27, the copper bar locking bolt; 28, the upper half bushing; 29, the upper stop copper bar; 30, the bushing outer circle locking ring; 31, the bushing locking bolt; 32, the bushing locking nut; 33, the locking washer. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0059] It should be pointed out that according to the needs of implementation, each step / component described in the present application can be split into more steps / components, or two or more steps / components or part of the operation of the steps / components can be combined into a new step / component to achieve the purpose of the present application.

[0060] Embodiment one, the present embodiment provides a water-lubricated bearing whole splicing type strip machining process, the main machining process flow is as follows:

[0061] Bushing plate material blanking (length direction both ends lengthened as process chuck) → bushing plate processing spliced bevel, water tank bevel → using special tooling spliced bushing (internal support, external clamping) → finish machining of the overall bushing both ends of the outer circle and the inner hole reference surface, flat both ends → the overall bushing both ends of the inner hole on the plug, the outer circle on the harver ring → finish machining of the overall bushing body outer circle in place → disassembly of the bushing, marking → bushing and bushing cold loading → bushing inner hole overall processing in place.

[0062] Specifically:

[0063] S1, bushing plate material blanking processing

[0064] As shown in Figures 1-3 , according to the processing of the outer contour 1 of the plate, the plate blanking line 3 is set on the plate blank 2, and then the plate blanking line 3 is processed on the machine tool according to the plate blanking line 3; the plate is lengthened at both ends in the direction as the plate process chuck 5.

[0065] S2, the spliced bevel and water tank bevel of the bushing plate are processed

[0066] As shown in Figure 4 , the spliced bevel and water tank bevel of the plate are processed to the required size by using a numerical control machine tool.

[0067] At this point, the spliced bevel and water tank processing of the spliced bushing are completed.

[0068] S3, using special tooling to splice multiple bushing plates in the circumferential direction (internal support, external clamping), forming a cylindrical bushing structure

[0069] As shown in Figure 5 , the plate is assembled into a whole and locked by using the plate outer circle locking ring 10, the plate inner hole support tooling 17 and the plate back-pulling pad plate 16.

[0070] S4, finish machining the outer circle reference surface, inner hole reference surface and both end planes of the cylindrical bushing structure

[0071] As shown in Figure 6 , the outer circle, inner hole and both end planes of the cylindrical bushing structure are processed to the required size by using a numerical control boring and milling machine, and are used as the reference surface for subsequent plate finish machining of the outer circle.

[0072] S5, installing center plugs in the inner holes of the bushing and installing harver rings on the outer circle of the bushing

[0073] S6, finish machining the outer circle of the bushing

[0074] As shown in Figure 7 , the center plugs are installed in the inner holes of the plate on both sides, the outer circle is locked by the harver ring, the original plate outer circle locking ring 10 is removed, and the outer circle of the bushing is finish machined to the required size on the numerical control lathe.

[0075] At this point, the outer circle and end face of the spliced bearing shell are machined in place.

[0076] S7, disassemble the bearing shell, make a mark

[0077] As Figure 8 resulting, the upper (S) and lower (X) marks are made in order on the end face of the bearing shell to facilitate subsequent installation.

[0078] S8, bearing shell and bushing cold assembly

[0079] As Figures 9-10 shown, after the stop copper bar and the bushing are fastened by locking bolts, the bearing shell plate is assembled in order by cold assembly (liquid nitrogen freezing) into the bearing bushing, and the upper and lower bearing shells are the same. After returning to normal temperature, the inner hole is machined.

[0080] S9, the inner hole of the bearing shell is machined in place

[0081] As Figures 11-12 shown, after the lower half bearing shell and the lower half bushing are cold assembled, and the upper half bearing shell and the upper half bushing are cold assembled, the upper and lower half bushings are assembled, the outer circle locking ring is locked, and the inner hole of the bearing shell is precisely machined by a numerical control lathe or a boring machine.

[0082] At this point, the inner hole of the spliced bearing shell is machined in place. The precision machining of the splice bevel, water groove, outer circle, inner hole and end face of the whole spliced plate is completed.

[0083] Example 2, the water-lubricated bearing whole spliced plate processing technology provided by the embodiment mainly includes:

[0084] Step 1: splice the bevel and water groove of the water-lubricated bearing spliced bearing shell;

[0085] Step 2: Machining the outer circle and end face of the water-lubricated bearing spliced bearing shell;

[0086] Step 3: Machining the inner hole of the water-lubricated bearing spliced bearing shell.

[0087] Its main features are as follows:

[0088] 1) The machining process of first machining the wedge surface of the plate material with high precision, and then machining the outer circle of the whole plate.

[0089] 2) Based on the temperature characteristics of the plate material, the liquid nitrogen freezing method is used to assemble the water-lubricated bearing plate.

[0090] 3) The process flow of assembling first and then machining the inner hole of the plate.

[0091] Further, the parts not described in detail in the present application are the same as the prior art or are realized by using the prior art.

[0092] In summary:

[0093] 1、The processing procedure of the present application can ensure the requirements of the assembly of the board and the bushing by separately processing the wedge surface of the board material and integrally processing the outer circle of the board material;

[0094] 2、The present application can ensure the structural stability of the board at the working temperature by using the liquid nitrogen freezing method to assemble the water-lubricated bearing board based on the temperature characteristics of the board material;

[0095] 3、The present application can effectively ensure that the cylindrical degree and coaxiality of the bearing inner hole after assembly meet the use requirements by using the process flow of assembling first and then integrally processing the inner hole of the board, which reduces the assembly difficulty of the board.

[0096] Those skilled in the art will easily understand that the above description is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A processing technology for integrally spliced ​​strips of water-lubricated bearings, characterized in that, Includes the following steps: S1, Bearing shell plate blanking process, processing the strip blank into bearing shell strips with a preset outline; S2, the bearing strip is processed with splicing bevel and water groove bevel; S3 uses an inner hole support fixture, an outer circle locking ring and a top bolt to splice multiple bearing strips along the circumference to form a cylindrical bearing structure; S4, the outer circle reference surface and the inner hole reference surface are machined at both ends of the cylindrical bearing structure; S5, install inner hole center plugs and outer circle locking rings of the bearing at both ends of the cylindrical bearing structure; S6, turning the outer circular surface of the middle cylindrical body of the cylindrical bearing structure; S7. Sequentially label and record the assembled bearing strips along the circumferential direction, and then disassemble the bearing strips. S8, the disassembled bearing strips are installed into the bearing bushing in sequence according to their numbers using a cold assembly method; S9, according to process requirements, the inner hole of the assembled bearing bush is precision machined.

2. The integral splicing strip processing technology for water-lubricated bearings according to claim 1, characterized in that... In step S1, the blanking and processing of the bearing plate specifically includes the following steps: S11, according to the preset outer contour of the strip processing (1), set the strip cutting line (3) on the strip blank (2); S12, the strip blank (2) is contoured on the machine tool according to the strip blanking line (3); S13, the two ends of the strip blank (2) along the length direction retain a preset length as strip process clamps (5).

3. The integral splicing strip processing technology for water-lubricated bearings according to claim 1, characterized in that... In step S2, the processing of the beveled surface of the bearing strip splicing and the beveled surface of the water groove specifically includes the following steps: S21, according to the preset circumferential angle of the strip, process the strip splicing bevel on both sides of the bearing strip (6); S22, based on the preset water tank size, process the slatted water tank slope (7) on the basis of the slatted splicing slope (6); S23, according to the preset bearing radius, process the inner arc surface (8) and the outer arc surface (9) of the strip in sequence.

4. The integral splicing strip processing technology for water-lubricated bearings according to claim 1, characterized in that... Step S3, which involves splicing multiple bearing strips, specifically includes the following steps: S31, by using the tooling connecting screw (18) and tooling locking nut (19) to cooperate, the inner hole support tooling (17) of the slat is installed on the assembly platform; S32, multiple bearing strips are arranged in sequence along the circumferential direction on the outer ring of the inner hole support fixture (17), and multiple support columns arranged along the circumferential direction on the outer ring of the inner hole support fixture (17) are respectively snapped into the water trough formed by splicing the corresponding bearing strips. At the same time, a strip pull-back pad (16) is set on both sides of the inner hole support fixture (17) to abut against the arranged bearing strips. S33, an upper half ring and a lower half ring of a locking ring (10) for the outer circle of multiple bearing strips spliced ​​along the circumference are provided, and the upper half ring and the lower half ring are fixedly connected by locking ring fixing bolts (11), locking ring fixing nuts (12) and spring washers (13); S34, insert multiple strip tightening bolts (14) sequentially along the outer circumference of the outer ring (10) of the strip, and the strip tightening bolts (14) cooperate with the strip tightening nuts (15) to tighten the corresponding outer arc surface of the bearing strip.

5. The integral splicing strip processing technology for water-lubricated bearings according to claim 1, characterized in that... In step S4, the machining of the outer circular reference surface and the inner hole reference surface specifically includes the following steps: S41, according to the preset outer diameter of the bearing bush, machine the outer circle reference machining surface (4-1) on the outer ring surface at both ends of the cylindrical bearing bush structure; S42, according to the preset inner diameter of the bearing bush, machine the inner hole reference machining surface (4-2) on the inner ring surface at both ends of the cylindrical bearing bush structure; S43, grind the end faces of both ends of the cylindrical bearing structure.

6. The integral splicing strip processing technology for water-lubricated bearings according to claim 1, characterized in that... In step S5, the inner hole center plug (20) is installed in the inner hole at both ends of the cylindrical bearing structure, and the outer circle locking ring (21) of the bearing is installed on the outer ring at both ends of the cylindrical bearing structure through the bearing locking bolt (22), the bearing locking nut (23) and the spring washer (24).

7. The integral splicing strip processing technology for water-lubricated bearings according to claim 1, characterized in that... In step S6, the machining dimensions of the outer cylindrical surface of the central part of the cylindrical bearing structure are adapted to the inner hole dimensions of the water-lubricated bearing bush.

8. The integral splicing strip processing technology for water-lubricated bearings according to claim 4, characterized in that... In step S7, the bearing strip is disassembled, which specifically includes the following steps: S71, disassemble the locking ring fixing bolt (11) and the outer circle locking ring (10) of the strip in sequence; S72, loosen the strip pull-back pad (16), and remove each bearing strip in sequence from the outer ring of the inner hole support fixture (17) along the circumferential direction.

9. The integral splicing strip processing technology for water-lubricated bearings according to claim 4, characterized in that... In step S8, the bearing bushing is formed by splicing the lower half bushing (25) and the upper half bushing (28) together with the bushing outer circle locking ring (30), the bushing locking nut (32) and the locking washer (33); After the bearing bush strip is installed in the bearing bush, it is locked in the inner hole of the bearing bush by the cooperation of the upper stop copper strip (29), the lower stop copper strip (26) and the copper strip locking bolt (27).

10. The integral splicing strip processing technology for water-lubricated bearings according to claim 4, characterized in that... In step S9, the inner hole of the bearing bush is precision machined, specifically by machining the inner hole wall according to the preset inner hole roughness.

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