CN102501005A - Manufacturing method of large cold-rolled reel block - Google Patents
Manufacturing method of large cold-rolled reel block Download PDFInfo
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- CN102501005A CN102501005A CN2011103266215A CN201110326621A CN102501005A CN 102501005 A CN102501005 A CN 102501005A CN 2011103266215 A CN2011103266215 A CN 2011103266215A CN 201110326621 A CN201110326621 A CN 201110326621A CN 102501005 A CN102501005 A CN 102501005A
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Abstract
The invention relates to a manufacturing method of a large cold-rolled reel block. The manufacturing method of the large cold-rolled reel block comprises the heat treatment sep of a coiling block sector plate, a precision indexing processing step of a pyramidal shaft, and an assembly precision processing step of a coiling block, and is characterized in that: the precision indexing processing step of the pyramidal shaft is as follows: an indexing key is arranged at the end part of the pyramidal shaft, and a cut length is selected on the indexing key and is converted into two coordinates of the indexing key by a trigonometric function; and the pyramidal shaft is rotated, and a dial indicator is used for the alignment of the two coordinates of the indexing key on a numeric control machine tool so as to realize the precision indexing process of the pyramidal shaft in the circumferential direction. Compared with the traditional indexing processing method of the pyramidal shaft, the circumferential indexing is converted into two coordinate sizes in a plane coordinate system, the precision of the numeric control machine tool is utilized to ensure the precision of the circumferential indexing, and the error can be reduced to 0.1mum, thus the manufactured pyramidal shaft is entirely reliable, and the manufactured coiling block structure is more precise.
Description
Technical field
The present invention relates to cold rolling large-scale coiling machine, refer to a kind of manufacturing approach of cold rolling large-scale coiler mandrel particularly.
Background technology
Increasingly extensive along with the cold-rolled steel strip products range of application, modern cold-strip steel taking-up equipment also develops towards the maximization direction of high speed, rewinding, the wide plate width of cloth.With automobile car plate and household electrical appliances panel is that the high-end cold-reduced sheet market of representative is example, and its quality to flat cold-rolled sheet has just proposed increasingly high requirement.The band steel rolling equipment directly related with flat cold-rolled sheet---cold coiling machine reel also develops towards accurate more direction, and the large-scale seamless reel that bearing capacity is big, dynamic balance performance good, reeling quality is good is just becoming the object that cold rolling manufacturer is pursued.At present, this large-scale reel mainly partly is made up of pyramid axle, fanning strip, hollow shaft, panel, pull bar, rotation contract cylinder etc., and it has characteristics such as overlength, heavy duty, complex structure.Different with other cold rolling reel, on the one hand, because coiling speed is high, so strict more to the requirement for dynamic balance of reel.Slit during for solution reel distending between fanning strip is to the influence of strip steel surface quality, and reel has adopted eight lobe formula pyramid axle fanning strip enclosed reel structures, and for alleviating vibration equipment, its dynamic balance accuracy requires to reach more than the G6.3.For guaranteeing that the reel barycenter is evenly distributed, and requires eight accurate calibration of pyramidal surface of pyramid axle.The calibration processing method of existing pyramid axle is that the pyramid axle is placed on the rotary table of lathe, and connects index dial at the tail end of workpiece, when workpiece water degree of dividing equally adds man-hour, rotates the workbench of lathe, realizes the horizontal calibration of pyramid axle sloping platform face; When workpiece circumference calibration adds man-hour, rotate the rotation of the index dial drive lip axis of cone, realize the circumference calibration of pyramid axle.But processing for large-scale coiler mandrel pyramid axle; Because its volume is big, weight is also bigger, receives the restriction of lathe rotary table and index dial ability to work, often is difficult to processing; Adopt the method for line to carry out at present, the error of its indexing accuracy is about 0.3mm; On the other hand, be the needs that the adaptive zone steel wide plate width of cloth batches, the reel fanning strip is generally more than 2.5m; Nearly nine in the pyramid axle sloping platform face that matches with it, because fanning strip overlength and thin, and traditional method is fanning strip laterally to be put into heat-treatment furnace heat-treat; Under high temperature and gravity effect, be easy to produce thermal stress deformation; Because the restriction of fanning strip allowance, influenced the following process of workpiece, sometimes even the situation that occurs scrapping; In addition, the assembly precision of reel also has the significant effects effect to the dynamic balancing of reel and the quality of batching the band steel.Traditional assembling mode is earlier pyramid axle, fanning strip etc. to be processed into finished parts; Assembling then; Because always there is error in assembling process with design basis, so assembling back reel pyramid axle and the axiality of fanning strip, the running accuracy of reel etc. often do not meet the demands.
In sum, the precision indexing processing of the heat treatment deformation of prevention fanning strip, pyramid axle and raising reel assembly precision are the several importances that improve cold rolling large-scale coiler mandrel measure of precision.
Summary of the invention
Technical problem to be solved by this invention just provides a kind of manufacturing approach of cold rolling large-scale coiler mandrel, can produce the cold rolling large-scale coiler mandrel of precise structure.
For solving the problems of the technologies described above; The manufacturing approach of a kind of cold rolling large-scale coiler mandrel provided by the invention; Comprise the heat treatment step of reel fanning strip, the precision indexing procedure of processing of pyramid axle and the assembling Precision Machining step of reel; Its special feature is: the precision indexing procedure of processing of said pyramid axle comprises the horizontal calibration processing of pyramid axle and the circumference calibration processing of pyramid axle, and concrete steps are following:
1) the horizontal calibration processing of pyramid axle:
1.1) pyramid axle truncated rectangular pyramids sloping platform face and four top shoulder slope table top spot sizes are by the maximum outer circle processing that cuts, all the other spot sizes processing reach designing requirement;
1.2) at the pyramid shaft end standard dividing head that a length is set is N, and on machine tool horizontal processing X-Y face, use the amesdial levelling, wherein setting the machine tool guideway direction is that X axle, major axes orientation are that Y axle, vertical height direction are the Z axle;
1.3) keep the dividing head level constant, on pyramid axial cylindrical face, get the long line segment of one section M, press the first sloping platform face of X=M * cos α, Y=M * sin α centering processing pyramid axle on X-Y face, wherein α is pyramid axle sloping platform face oblique angle;
1.4) keep the pyramid shaft position constant, rotate the pyramid axle, to vertical, process the second sloping platform face of pyramid axle with amesdial centering dividing head, the rest may be inferred, all the other two sloping platform faces of processing pyramid axle;
2) the circumference calibration of pyramid axle processing:
2.1) on machine tooling Y-Z face, it is strong to press Y=N * cos γ, Z=N * sin γ centering calibration, wherein γ is the circumference minute of angle between pyramid axle truncated rectangular pyramids sloping platform face and the four top shoulder slope table tops;
2.2) keep the pyramid Spindle Status constant, on pyramid axial cylindrical face, get the long line segment of one section M, press the first sloping platform face of X=M * cos β, Y=M * sin β centering processing shoulder position, pyramid axle top on X-Y face.Wherein β is the oblique angle of pyramid axle top shoulder slope table top;
2.3) keep the pyramid shaft position constant, rotate the pyramid axle, to the upright position, process the second sloping platform face of shoulder position, pyramid axle top with amesdial centering pyramid axle top shoulder slope table top, the rest may be inferred, all the other two sloping platform faces of processing shoulder position, top.
In the heat treatment step of the said reel fanning strip of technique scheme, vertically place heat-treatment furnace to heat-treat one group of fanning strip.
Further, said fanning strip vertically places heat-treatment furnace to heat-treat through heat treatment fixture; Said heat treatment fixture comprises upper head plate, bottom plate and suspended axle; Said upper head plate and bottom plate are provided with some screws along the circumference correspondence, are respectively applied for the top and bottom of fixed sectors plate; The lower end of said suspended axle is connected with upper head plate, and the upper end of suspended axle is connected with heat-treatment furnace.
The assembling Precision Machining step of the said reel of technique scheme is: the fanning strip, panel and other component end items that periphery are left allowance assemble; After assembling is accomplished; Fanning strip and pyramid axle is temporary fixed, the periphery of centering pyramid axle, consistent to guarantee machining benchmark with design basis; Then reel is carried out integral body processing, the axiality of reel and running accuracy are met design requirement.
Further, in the assembling Precision Machining step of said reel, fanning strip and pyramid axle is temporary fixed and carry out integral body processing through reel Precision Machining frock; Said reel Precision Machining frock comprises pyramid axle, some fanning strips, pull bar, cambered plate and panel, and said pyramid axle is provided with quill shaft vertically, and the outer surface of pyramid axle is provided with secondary sloping platform face at least; The inboard of said fanning strip cooperates with the sloping platform face of pyramid axle and is arranged at pyramid axle periphery, constitutes tubular; Said pull bar be positioned at quill shaft and with the quill shaft matched in clearance; The end that one end of pull bar extends to the outer adapter sleeve with column of quill shaft links to each other; Fanning strip and cambered plate connection and formation and the identical groove of said panel end cross-sectional shape; The other end of adapter sleeve is positioned at groove, can radially relatively moves with fanning strip, and the other end of pull bar is provided with nut, after being used to tighten pull bar and pyramid axle is fixed; Said panel is arranged between pyramid axle and the fanning strip, is used to fill the seam between the adjacent fanning strip, and said pyramid axle is provided with flange, is provided with positioning sleeve between the movable end of said fanning strip and the flange, is used for the axial location of fanning strip.
Further, also be provided with spacer between said nut and the pyramid axial end, be used for the clamping of pull bar.
Beneficial effect of the present invention is: 1) compare with traditional pyramid axle calibration processing method; The present invention is converted into two coordinate dimensions in the plane coordinate system with the circumference calibration; And the precision of utilizing Digit Control Machine Tool guarantees the circumference indexing accuracy; Error can be reduced to 0.1 μ m, thereby the pyramid axle that produces is reliable fully; 2) with tradition fanning strip laterally being put into the method that heat-treatment furnace heat-treats compares; The present invention vertically places heat-treatment furnace with fanning strip and guarantees in whole heat treatment process; Fanning strip is in vertical state all the time; Effectively prevent the distortion of fanning strip, and then improved the quality of whole reel; 3) adopted fanning strip and pyramid axle temporary fixed; Thereby realize the mode of assembling earlier, reprocessing fanning strip and panel; Because what parts such as pyramid axle, pull bar, positioning sleeve adopted is final finished parts; In full accord after their installations with the reel actual working state, thereby the axiality and the running accuracy of processing the reel mandrel behind fanning strip, the panel on this basis meet the demands fully.
Description of drawings
Fig. 1 is the sketch map under a kind of reel fanning strip condition of heat treatment in the invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the structural representation of reel pyramid axle.
Fig. 4 to Fig. 7 is the schematic flow sheet of a kind of pyramid axle calibration processing among the present invention.
Fig. 8 is the structural representation of a kind of reel Precision Machining frock among the present invention.
Fig. 9 is the B-B profile of Fig. 8.
Among the figure: 1-upper head plate, 2-bottom plate, 3-suspended axle (wherein: 3.1-pin-and-hole), 4-latch, 5-connecting bolt; 6-elongated hole, 7-fanning strip, 8-pyramid axis blank, 9-dividing head, 10-pyramid axle (wherein: 10.1-quill shaft, 10.2-flange); 11-pull bar, 12-adapter sleeve, 13-the first bolt, 14-nut, 15-copper sheathing; 16-panel, 17-cambered plate, 18-positioning sleeve, 19-spacer, 20-the second bolt.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiment of the present invention is done further to describe in detail.
The manufacturing approach of a kind of cold rolling large-scale coiler mandrel of the present invention; The procedure of processing that comprises each parts of reel such as fanning strip 7, pyramid axle 10, pull bar 11 and panel 16; And the assembling Precision Machining step of reel; In each component processing step of present embodiment, the periphery of fanning strip 7 and panel 16 leaves allowance, and remaining part is processed into finished parts.Except the assembling Precision Machining of the precision indexing processing of the heat treatment of fanning strip 7, pyramid axle 10 and reel, all can adopt conventional processing method.Specific as follows.
The heat treatment of fanning strip 7: as depicted in figs. 1 and 2; One group of fanning strip 7 in the present embodiment vertically places heat-treatment furnace to heat-treat; And adopting a kind of heat treatment fixture that fanning strip 7 is arranged in the heat-treatment furnace, this heat treatment fixture comprises upper head plate 1, bottom plate 2 and suspended axle 3.Wherein, upper head plate 1 all is provided with elongated hole 6 along the circumference correspondence with bottom plate 2, fixes the top and bottom of one group of fanning strip 7 respectively through connecting bolt 5.The central authorities of upper head plate 1 and bottom plate 2 are equipped with through hole, can be used for connecting with suspended axle 3, and the two interchangeable use.The lower end of suspended axle 3 can hold up upper head plate 1 through flange is set, and the upper end of suspended axle 3 has pin-and-hole 3.1, can be connected with heat-treatment furnace through latch 4.Visible by Fig. 1, in the whole heat treatment process, one group of fanning strip 7 is under the vertical state all the time, has effectively avoided the distortion of fanning strip 7.
The precision indexing processing of pyramid axle 10 is divided into the horizontal calibration processing and the processing of circumference calibration of pyramid axle 10.
1) the horizontal calibration processing of pyramid axle 10:
1.1) as shown in Figure 4, pyramid axle 10 truncated rectangular pyramids sloping platform faces and four top shoulder slope table top spot sizes are by the maximum outer circle processing that cuts, and all the other spot size processing reach designing requirement;
1.2) standard dividing head 9 that in pyramid axle 10 ends a length to be set be N, and on machine tool horizontal processing X-Y face, use the amesdial levelling, wherein setting the machine tool guideway direction is that X axle, major axes orientation are that Y axle, vertical height direction are the Z axle;
1.3) as shown in Figure 5; Keep dividing head 9 levels constant; On pyramid axle 10 faces of cylinder, get the long line segment of one section M, press the first sloping platform face of X=M * cos α, Y=M * sin α centering processing pyramid axle 10 on X-Y face, wherein α is pyramid axle sloping platform face oblique angle;
1.4) keep pyramid axle 10 invariant positions, rotate pyramid axle 10, to vertically, process the second sloping platform face of pyramid axle 10 with amesdial centering dividing head 9, the rest may be inferred, all the other two sloping platform faces of processing pyramid axle 10.
2) the circumference calibration of pyramid axle 10 processing:
2.1) as shown in Figure 6, on machine tooling Y-Z face, it is strong 9 to press Y=N * cos γ, Z=N * sin γ centering calibration, and wherein γ is the circumference minute of angle between pyramid axle 10 truncated rectangular pyramids sloping platform faces and the four top shoulder slope table tops;
2.2) as shown in Figure 7, keep pyramid axle 10 states constant, on pyramid axle 10 faces of cylinder, get the long line segment of one section M, press the first sloping platform face of X=M * cos β, Y=M * sin β centering processing shoulder position, pyramid axle 10 top on X-Y face.Wherein β is the oblique angle of pyramid axle 10 top shoulder slope table tops;
2.3) keep pyramid axle 10 invariant positions, rotate pyramid axle 10, to the upright position, process the second sloping platform face of shoulder position, pyramid axle 10 top with amesdial centering pyramid axle 10 top shoulder slope table tops, the rest may be inferred, all the other two sloping platform faces of processing shoulder position, top.
The assembling Precision Machining of reel: like Fig. 8 and shown in Figure 9; Present embodiment adopts reel Precision Machining frock that fanning strip 7 and pyramid axle 10 is temporary fixed and the reel that assembles is carried out integral body process, and this reel Precision Machining frock comprises pyramid axle 10, four blocks of fanning strips 7, pull bar 11, cambered plate 17 and panels 16.Pyramid axle 10 is eight lobe formulas, and pyramid axle 10 is provided with quill shaft 10.1 vertically, and the outer surface of pyramid axle 10 is provided with secondary sloping platform face at least, and present embodiment is provided with nine grades of sloping platform faces altogether.In addition, on pyramid axle 10, also be provided with flange 10.1.The inboard of four fanning strips 7 cooperates with the sloping platform face of pyramid axle 10 and is arranged at pyramid axle 10 peripheries respectively, constitutes tubular.Pull bar 11 be positioned at above-mentioned quill shaft 10.1 and with quill shaft 10.1 matched in clearance, can endwisely slip along quill shaft 10.1.One end of pull bar 11 extends to quill shaft 10.1 outer first bolts 13 that also pass through and links to each other with the adapter sleeve 12 of column; Fanning strip 7 links to each other and formation and the identical groove of panel 16 end cross-sectional shapes through second bolt 20 with cambered plate 17; Adapter sleeve 12 is positioned at this groove, can radially relatively moves with fanning strip 7; Between the flange 10.2 of the movable end of whole fanning strips 7 and pyramid axle 10, then be provided with positioning sleeve 18, can be used for the axial location of fanning strip 7.The other end of pull bar 11 then is provided with nut 14, withstands the copper sheathing 15 of pyramid axle 10 these ends after nut 14 is tightened, can pull bar 11 is fixing with pyramid axle 10 with positioning sleeve 18.For clamping pull bar 11, preventing its shake, between the copper sheathing 15 of nut 14 and pyramid axle 10 end faces, also be provided with spacer 19.Panel 16 is arranged between pyramid axle 10 and the fanning strip 7, is used to fill the seam between the adjacent fanning strip 7.
Adopt this processing tool, pyramid axle 10, pull bar 11, cambered plate 17 and positioning sleeve 18 etc. are the processed finished product parts, and the periphery of fanning strip 7 and panel 16 leaves allowance.When carrying out the assembling of each parts of reel; Fanning strip 7 keeps mutual position relation with pyramid axle 10 through positioning sleeve 18; And consistent with reel work circle state, tighten the nut 14 of pull bar 11 tail ends, pull bar 11 drives adapter sleeves 12; Adapter sleeve 12 promotes fanning strip 7 and closely contacts with positioning sleeve 18, forms the reel under the frock state.To the reel that assembles the fanning strip 7 that leaves allowance is processed with panel 16 then; At this moment; The periphery of centering pyramid axle 10 guarantees that machining benchmark and design basis are consistent, and the axiality and the running accuracy of the reel mandrel after the processing are met design requirement.
Core of the present invention is to utilize the mode of pyramid axle 10 precision indexings processing to make the calibration machining accuracy of pyramid axle 10 high, through improving the measure of precision that pyramid axle 10 quality have promoted reel; On the other hand, avoid the mode of the measure and the accurate assembling processing of reel of fanning strip 7 heat treatment deformations, make the precise structure of mandrel member, whole axiality and the running accuracy of reel meets the demands fully.So its protection domain is not limited to the foregoing description.Obviously; Those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention; For example: it is said that the heat treatment fixture of fanning strip 7 is not limited to the foregoing description, and adopting other mechanism that fanning strip 7 is vertically hung also is feasible in heat-treatment furnace; The temporary fixed above-mentioned reel Precision Machining frock etc. that also is not limited to of fanning strip 7 and pyramid axle 10.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and is out of shape interior.
Claims (6)
1. the manufacturing approach of a cold rolling large-scale coiler mandrel; Comprise the heat treatment step of reel fanning strip (7), the precision indexing procedure of processing of pyramid axle (10) and the assembling Precision Machining step of reel; It is characterized in that: the precision indexing procedure of processing of said pyramid axle (10) comprises the horizontal calibration processing of pyramid axle (10) and the circumference calibration processing of pyramid axle (10), and concrete steps are following:
1) the horizontal calibration processing of pyramid axle (10):
1.1) pyramid axle (10) truncated rectangular pyramids sloping platform face and four top shoulder slope table top spot sizes are by the maximum outer circle processing that cuts, all the other spot sizes processing reach designing requirement;
1.2) standard dividing head (9) that in pyramid axle (10) end a length to be set be N, and on machine tool horizontal processing X-Y face, use the amesdial levelling, wherein setting the machine tool guideway direction is that X axle, major axes orientation are that Y axle, vertical height direction are the Z axle;
1.3) keep dividing head (9) level constant; On pyramid axle (10) face of cylinder, get the long line segment of one section M; Press the first sloping platform face of X=M * cos α, Y=M * sin α centering processing pyramid axle (10) on X-Y face, wherein α is pyramid axle sloping platform face oblique angle;
1.4) keep pyramid axle (10) invariant position, rotate pyramid axle (10), to vertical, process the second sloping platform face of pyramid axle (10) with amesdial centering dividing head (9), the rest may be inferred, all the other two sloping platform faces of processing pyramid axle (10);
2) the circumference calibration of pyramid axle (10) processing:
2.1) on machine tooling Y-Z face, press Y=N * cos γ, Z=N * sin γ centering calibration strong (9), wherein γ is the circumference minute of angle between pyramid axle (10) truncated rectangular pyramids sloping platform face and the four top shoulder slope table tops;
2.2) keep pyramid axle (10) state constant; On pyramid axle (10) face of cylinder, get the long line segment of one section M; Press the first sloping platform face of X=M * cos β, Y=M * sin β centering processing shoulder position, pyramid axle (10) top on X-Y face, wherein β is the oblique angle of pyramid axle (10) top shoulder slope table top;
2.3) maintenance pyramid axle (10) invariant position; Rotate pyramid axle (10), to the upright position, process the second sloping platform face of shoulder position, pyramid axle (10) top with amesdial centering pyramid axle (10) top shoulder slope table top; The rest may be inferred, all the other two sloping platform faces of processing shoulder position, top.
2. the manufacturing approach of cold rolling large-scale coiler mandrel according to claim 1 is characterized in that: in the heat treatment step of said reel fanning strip (7), vertically place heat-treatment furnace to heat-treat one group of fanning strip (7).
3. the manufacturing approach of cold rolling large-scale coiler mandrel according to claim 2, it is characterized in that: said fanning strip (7) vertically places heat-treatment furnace to heat-treat through heat treatment fixture; Said heat treatment fixture comprises upper head plate (1), bottom plate (2) and suspended axle (3); Said upper head plate (1) and bottom plate (2) are provided with some screws along the circumference correspondence, are respectively applied for the top and bottom of fixed sectors plate (7); The lower end of said suspended axle (3) is connected with upper head plate (1), and the upper end of suspended axle (3) is connected with heat-treatment furnace.
4. according to the manufacturing approach of the described cold rolling large-scale coiler mandrel of arbitrary claim in the claim 1 to 3; It is characterized in that: the assembling Precision Machining step of said reel is: the fanning strip (7), panel (16) and other component end items that periphery are left allowance assemble; After assembling is accomplished; Fanning strip (7) and pyramid axle (10) is temporary fixed, the periphery of centering pyramid axle (10), consistent to guarantee machining benchmark with design basis; Then reel is carried out integral body processing, the axiality of reel and running accuracy are met design requirement.
5. the manufacturing approach of cold rolling large-scale coiler mandrel according to claim 4; It is characterized in that: in the assembling Precision Machining step of said reel, fanning strip (7) and pyramid axle (10) is temporary fixed and carry out integral body and process through reel Precision Machining frock; Said reel Precision Machining frock; Comprise pyramid axle (10), some fanning strips (7), pull bar (11), cambered plate (17) and panel (16); Said pyramid axle (10) is provided with quill shaft (10.1) vertically, and the outer surface of pyramid axle (10) is provided with secondary sloping platform face at least; The inboard of said fanning strip (7) cooperates with the sloping platform face of pyramid axle (10) and is arranged at pyramid axle (10) periphery, constitutes tubular; Said pull bar (11) be positioned at quill shaft (10.1) and with quill shaft (10.1) matched in clearance; The end that one end of pull bar (11) extends to the outer adapter sleeve (12) with column of quill shaft (10.1) links to each other; Fanning strip (7) and cambered plate (17) connection and formation and the identical groove of said panel (16) end cross-sectional shape; The other end of adapter sleeve (12) is positioned at groove, can radially relatively moves with fanning strip (7); The other end of pull bar (11) is provided with nut (14), and is after being used to tighten that pull bar (11) and pyramid axle (10) is fixing; Said panel (16) is arranged between pyramid axle (10) and the fanning strip (7); Be used to fill the seam between the adjacent fanning strip (7); Said pyramid axle (10) is provided with flange (10.2); Be provided with positioning sleeve (18) between the movable end of said fanning strip (7) and the flange (10.2), be used for the axial location of fanning strip (7).
6. the manufacturing approach of cold rolling large-scale coiler mandrel according to claim 5 is characterized in that: also be provided with spacer (19) between said nut (14) and pyramid axle (10) end face, be used for the clamping of pull bar (11).
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| CN 201110326621 CN102501005B (en) | 2011-10-25 | 2011-10-25 | Manufacturing method of large cold-rolled reel block |
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| CN 201110326621 CN102501005B (en) | 2011-10-25 | 2011-10-25 | Manufacturing method of large cold-rolled reel block |
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| CN102501005B CN102501005B (en) | 2013-11-06 |
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| CN103659176A (en) * | 2013-06-17 | 2014-03-26 | 青岛德固特节能装备股份有限公司 | Method for manufacturing precision inner barrel of shell of carbon black wet method granulator |
| CN104439879A (en) * | 2014-12-18 | 2015-03-25 | 武汉钢铁(集团)公司 | Large coiling block remanufacturing method |
| CN114850781A (en) * | 2022-05-10 | 2022-08-05 | 中国水利水电夹江水工机械有限公司 | Assembly method of winding drum and winding drum shaft of large ship lift |
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| CN103659176A (en) * | 2013-06-17 | 2014-03-26 | 青岛德固特节能装备股份有限公司 | Method for manufacturing precision inner barrel of shell of carbon black wet method granulator |
| CN103659176B (en) * | 2013-06-17 | 2016-02-24 | 青岛德固特节能装备股份有限公司 | Comminutor housing precision inner manufacture method |
| CN104439879A (en) * | 2014-12-18 | 2015-03-25 | 武汉钢铁(集团)公司 | Large coiling block remanufacturing method |
| CN114850781A (en) * | 2022-05-10 | 2022-08-05 | 中国水利水电夹江水工机械有限公司 | Assembly method of winding drum and winding drum shaft of large ship lift |
| CN114850781B (en) * | 2022-05-10 | 2023-06-27 | 中国水利水电夹江水工机械有限公司 | Method for assembling winding drum and winding drum shaft of large ship lift |
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| CN102501005B (en) | 2013-11-06 |
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