CN203527361U - Press-fit welding-on assembly for combination part formed by clutch hubs and gear with shaft - Google Patents
Press-fit welding-on assembly for combination part formed by clutch hubs and gear with shaft Download PDFInfo
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- CN203527361U CN203527361U CN201320639489.8U CN201320639489U CN203527361U CN 203527361 U CN203527361 U CN 203527361U CN 201320639489 U CN201320639489 U CN 201320639489U CN 203527361 U CN203527361 U CN 203527361U
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Abstract
The utility model discloses a press-fit welding-on assembly for a combination part formed by clutch hubs and a gear with a shaft, and relates to the field of machinery manufacturing. A press-fit support is of an annular convex-concave shape, and a first press-fit support top surface, a second press-fit support top surface, a press-fit support inner hole surface and a press-fit support bottom surface are arranged on the press-fit support; a pressing head locating sleeve is of an annular inner step shape, and a locating sleeve top surface and a locating sleeve inner hole surface are arranged on the pressing head locating sleeve; a press-fit pressing head is of an annular convex-concave shape, and a pressing head outer circle surface, a first pressing head bottom surface and a second pressing head bottom surface are arranged on the press-fit pressing head; the pressing head locating sleeve and the press-fit pressing head are connected to form a pressing head combination part in a fastening mode through locating sleeve fastening screws; a welding-on support is of an annular outer step shape, and a first welding-on support top surface, a second welding-on support top surface and a welding-on support bottom surface are arranged on the welding-on support. According to the press-fit welding-on assembly for the combination part formed by the clutch hubs and the gear with the shaft, the problem that deformation happens after press fit is carried out on the combination part formed by the clutch hubs and the gear with the shaft is effectively solved, the condition of deformation after welding-on connection of the combination part is controlled, and thus the purpose that press-fit welding-on manufacturing quality of the combination part is improved can be achieved.
Description
[technical field]
The utility model relates to mechanical manufacturing field, is specifically related to a kind ofly for clutch hub and stem gear component, be press-fitted seam assembly.
[background technology]
The automatically controlled power shifting power train of high-power wheeled tractor, system adopts electrical control hydraulic valve piece to handle shift clutch, can in the situation that not interrupting transmission of power, realize the gearshift of gear box of tractor, this is also up-to-date, the most advanced transmission system of current domestic agricultural machinery industry; Wherein, in the axle assembly in this power train, two axle assemblies, three axle assemblies and transfer case, all adopted " clutch hub and stem gear component " structure, this component structure, as shown in accompanying drawing 1, Fig. 2, Fig. 3.
In automatically controlled power shifting power train, the stem gear 3 in this component is assemblied on the power transmission shaft of this power train, wherein, also disposes oil cylinder and with the clutch disc of external splines in the inner chamber of clutch A hub 1, clutch B hub 2; During work, with the clutch disc of external splines can be in the inner spline groove of this component (clutch A hub inner spline groove 1d, clutch B hub inner spline groove 2d) under the effect of oil cylinder sliding and running, and can commutate by different oil circuits, control its cylinder action, promote whereby with the compression of the clutch disc of external splines or unclamp, thereby reaching the object of wheeled tractor self shifter transmitting torque.
This component structure is advanced reliable, in the automatically controlled power shifting power train of high-power wheeled tractor, occupies very consequence, is one of its crucial kernel component; Its design feature is as follows:
1) component by clutch A hub 1, clutch B hub 2, stem gear 3 totally three parts form, and clutch A hub 1 and clutch B hub 2 symmetries split the left and right sides at stem gear 3 parts.
2) component connects and belongs to non-removable quiet connection, is that employing is press-fitted and the mode of seam connects, and the endless belt cooperation place between clutch A hub inner face internal diameter ∮ 1c and stem gear b increment male half coupling external diameter ∮ 3b, adopts the seam after interference is press-fitted to connect; Equally, the endless belt cooperation place between clutch B hub inner face internal diameter ∮ 2c and stem gear c increment male half coupling external diameter ∮ 3c, is also to adopt the seam after interference is press-fitted to connect.
3) " clutch A hub 1, clutch B hub 2 " is bowl-type thin-walled barrel-like structure, wherein, " clutch A hub inner spline groove 1d, clutch B hub inner spline groove 2d " chute is respectively to the not enough 5mm of the thinnest part size (thickness) of " clutch A hub periphery 1a, clutch B hub periphery 2a ", and chute length is longer; In addition, after component connects, for guaranteeing that it normally uses, clutch A hub internal spline reference circle ∮ 1d, clutch B hub internal spline reference circle ∮ 2d, with respect to the benchmark of " stem gear a axle head internal diameter ∮ 3a1, stem gear d axle head internal diameter ∮ 3d1 " two centerline holes on stem gear 3, all have its strict form and position tolerance (axiality) requirement.
It should be noted that, clutch A hub 1 is same kind of parts with clutch B hub 2, and the two is two clutch hub parts making according to identical product detail drawing.In the utility model, for clearly explaining content described in the utility model, therefore the two is labeled as respectively to clutch A hub and clutch B hub, explained.
As from the foregoing, this component is manufactured, except needs are strictly controlled " clutch A hub 1, clutch B hub 2, stem gear 3 " three parts are outside the accuracy of manufacture separately in machined stage, also should strictly control it is press-fitted, deformation after seam (non-removable quiet connection), guarantee whereby the final accuracy of manufacture and the load-carrying properties index request of its component, otherwise, even if early stage, the control of the accuracy of manufacture separately of part was good again, if the later stage occurs causing clutch A hub internal spline reference circle ∮ 1d because of " being press-fitted or seam " distortion, the axiality of clutch B hub internal spline reference circle ∮ 2d is overproof, also be difficult to control the final workmanship of its component, while being also easy to cause move in (clutch A hub inner spline groove 1d or clutch B hub inner spline groove 2d) chute with the clutch disc of external splines, occurring stuck or slide dumb, then cause power shifting dysfunction or the disabler of whole power train, affect the normal operation of wheeled tractor.
With regard to the problem on deformation that is press-fitted, causes after seam with regard to it, this component in actual fabrication process, often occurs, is difficult to overcome, and has directly had influence on the making quality of component and assembling and the running quality of automatically controlled power shifting power train.Trace it to its cause, mainly contain following some:
1) magnitude of interference control problem: the endless belt face that is press-fitted seam place between clutch A hub 1, clutch B hub 2 and stem gear 3 is effectively wide very little, not enough 4mm, as too small in matching allowance, easily cause concentric locating inaccurate, unstable, during component seam, be prone to crooked, i.e. the overproof problem of axiality; As excessive in matching allowance, also can cause the chute distortion that is press-fitted rear clutch A hub inner spline groove 1d or clutch B hub inner spline groove 2d, there will be equally the overproof problem of axiality.
2) compression face is selected problem: because this component structure is limit and lacked and takes necessary technical measures, easily compression face is chosen on clutch A nave collar type large end face 1a ' or on clutch B nave collar type large end face 2a ' when being press-fitted, because " clutch A hub 1, clutch B hub 2 " is bowl-type thin-walled barrel-like structure, thereby, easily cause the chute distortion that is press-fitted rear clutch A hub inner spline groove 1d or clutch B hub inner spline groove 2d, occur the problem that axiality is overproof.
3) supporting surface is selected problem: the same, because this component structure is limit and lacks the necessary technology measure of taking, after stem gear 3 one end clutch hubs (as clutch A hub 1) are press-fitted, the 180 ° of upsets of overturning are placed, while being press-fitted other end clutch hub (as clutch B hub 2), easily will complete in advance the clutch hub compression face that is press-fitted (as clutch A nave collar type large end face 1a ', now should be not subjected to pressure face) the direct part supporting surface as pressurized, together with part compression face (as clutch B nave collar type large end face 2a '), effect continues to be stressed, then further strengthen again its distortion.
4) be press-fitted seam coupling method problem: although coupling method is a lot; especially seam coupling method; as carbon dioxide gas arc welding etc.; but because the structure of this component is special; in addition lack and take necessary technical measures and corresponding implementation step; as cleaning is processed, component preheating insulation and postwelding be self cooling etc. with stove; thereby easily make the difficult quality guarantee after this component seam connects; easily often there is the problem on deformation of clutch A hub 1, clutch B hub 2, affect the final workmanship of this component.
[summary of the invention]
In order to overcome the deficiency in background technology, the utility model discloses and a kind ofly for clutch hub and stem gear component, be press-fitted seam assembly, the utility model is press-fitted bearing, pressure head positioning sleeve by providing, is press-fitted pressure head, seam bearing etc. is press-fitted seam assembly and not only can effectively solves the problem on deformation that clutch hub and stem gear component occur after being press-fitted, but also can effectively control the deformation after component seam connects, thereby reach, improve the object that component is press-fitted seam making quality.
For achieving the above object, the utility model adopts following technical scheme:
A kind ofly for clutch hub and stem gear component, be press-fitted seam assembly, comprise and be press-fitted bearing, pressure head positioning sleeve, be press-fitted pressure head and seam bearing, the described bearing that is press-fitted is ring-like convex-concave shape, is provided with and is press-fitted bearing the first end face, is press-fitted bearing the second end face, is press-fitted bearing inner hole surface, is press-fitted bottom surface of support saddle on it; It is ring-like interior step-like that described pressure head positioning sleeve is, and is provided with positioning sleeve end face, positioning sleeve inner hole surface on it; The described pressure head that is press-fitted is ring-like convex-concave shape, is provided with pressure head periphery, pressure head the first bottom surface, pressure head the second bottom surface on it; Described pressure head positioning sleeve be press-fitted pressure head, adopt positioning sleeve trip bolt the two to be fastenedly connected into " pressure head component "; It is ring-like outer step-like that described seam bearing is, and is provided with seam bearing the first end face, seam bearing the second end face, seam bottom surface of support saddle on it.
Described for clutch hub and stem gear component be press-fitted seam assembly, on described seam bearing, be provided with four seam bearing trip bolts.
Described for clutch hub and stem gear component, be press-fitted seam assembly, described being press-fitted on bearing, be press-fitted bearing endoporus internal diameter ∮ j size and be greater than stem gear a axle head external diameter ∮ 3a2 size and stem gear d axle head external diameter ∮ 3d2 size, ∮ j-∮ 3a2(or ∮ 3d2)=0.5mm～0.8mm; Be press-fitted bearing the first to second end face size L1 and be greater than clutch A nave collar type large end face to inner face width LA1 size and clutch B nave collar type large end face to inner face width LB1 size, L1-LA1(or LB1)=2mm～20mm.
Described for clutch hub and stem gear component, be press-fitted seam assembly, on described pressure head positioning sleeve, positioning sleeve inner hole surface diameter ∮ m3 size is greater than clutch A hub external diameter ∮ 1a size or clutch B hub external diameter ∮ 2a size, ∮ m3-∮ 1a (∮ 2a)=0.4mm～0.8mm.
Described for clutch hub and stem gear component, be press-fitted seam assembly, described being press-fitted on pressure head 6, pressure head the first to second bottom width L2 size is greater than clutch A nave collar type large end face to inner face width LA1 size and clutch B nave collar type large end face to inner face width LB1 size, L2-LA1(or LB1)=5mm～10mm; Pressure head end face chamfering circular diameter ∮ m1 size is greater than stem gear b increment male half coupling external diameter ∮ 3b size and stem gear c increment male half coupling external diameter ∮ 3c size, ∮ m1-∮ 3b(or ∮ 3c)=1mm～2mm; Pressure head periphery external diameter ∮ m2 size is less than clutch A hub internal diameter ∮ 1b size and clutch B hub internal diameter ∮ 2b size, ∮ 1b(or ∮ 2b)-∮ m2=3mm～6mm.
Described for clutch hub and stem gear component, be press-fitted seam assembly, on described seam bearing, seam bearing the first cylindrical external diameter ∮ r1 size is less than stem gear a axle head internal diameter ∮ 3a1 size and stem gear d axle head internal diameter ∮ 3d1 size, ∮ 3a1(or ∮ 3d1)-∮ r1=0.04mm～0.08mm; Seam bearing the first to second apical side height L3 size is greater than clutch A nave collar type large end face to stem gear a axial end degree of depth La1 size and clutch B nave collar type large end face to stem gear d axial end degree of depth Ld1 size, L3-La1(or Ld1)=2mm～20mm.
Owing to adopting technical scheme as above, the utlity model has following beneficial effect:
1, described in the utility modelly for clutch hub and stem gear component, be press-fitted seam assembly, by what provide, be press-fitted bearing, pressure head positioning sleeve, be press-fitted pressure head, effectively solved the problem that magnitude of interference control, compression face and supporting surface that clutch hub and stem gear occur in being press-fitted process are selected, then effectively solved the problem on deformation that clutch hub and stem gear occur after interference is press-fitted, and had laid a good foundation for the seam in later stage connects;
2, by the seam bearing providing, effectively controlled the deformation that clutch hub occurs after seam connects with stem gear, after interference is press-fitted problem on deformation solution, further improved again the making quality of clutch hub and stem gear component, for positive booster action has been played in the operation of power clutch shifting function and lifting in the automatically controlled power shifting power train of wheeled tractor;
3, novel, simple in structure, reasonable and practical, it is convenient to implement, and has propagable value.
[accompanying drawing explanation]
Fig. 1 is clutch hub and stem gear component structural representation;
Fig. 2 is clutch A hub structure schematic diagram;
Fig. 3 is stem gear structural representation;
Fig. 4 is one of structural representation that is press-fitted seam assembly for clutch hub and stem gear component described in the utility model;
Fig. 5 is two of the structural representation that is press-fitted seam assembly for clutch hub and stem gear component described in the utility model;
Fig. 6 is for being press-fitted seat structure schematic diagram;
Fig. 7 is that the K of Fig. 6 is to view;
Fig. 8 is pressure head component structural representation;
Fig. 9 is that the N of Fig. 8 is to view;
Figure 10 is seam seat structure schematic diagram;
Figure 11 is that the Q of Figure 10 is to view;
The interference of Figure 12 clutch A hub and stem gear is press-fitted one of schematic diagram;
The interference of Figure 13 clutch A hub and stem gear is press-fitted two of schematic diagram;
The interference of Figure 14 clutch A hub and stem gear is press-fitted three of schematic diagram;
The interference of Figure 15 clutch B hub and stem gear is press-fitted one of schematic diagram;
The interference of Figure 16 clutch B hub and stem gear is press-fitted two of schematic diagram;
The interference of Figure 17 clutch B hub and stem gear is press-fitted three of schematic diagram;
Figure 18 clutch A hub connects schematic diagram with the seam of stem gear;
Figure 19 clutch B hub connects schematic diagram with the seam of stem gear;
In the drawings:
1, clutch A hub; 1a, clutch A hub periphery; 1a ', clutch A nave collar type large end face; 1b, clutch A hub inner headed face; 1c, clutch A nave collar type inner face; 1c', the outer small end face of clutch A nave collar type; 1d, clutch A hub inner spline groove; ∮ 1a, clutch A hub external diameter; ∮ 1b, clutch A hub internal diameter; ∮ 1c, clutch A hub inner face internal diameter; ∮ 1d, clutch A hub internal spline reference circle; LA1, clutch A nave collar type large end face are to inner face width;
2, clutch B hub; 2a, clutch B hub periphery; 2a ', clutch B nave collar type large end face; 2b, clutch B hub inner headed face; 2c, clutch B nave collar type inner face; 2c', the outer small end face of clutch B nave collar type; 2d, clutch B hub inner spline groove; ∮ 2a, clutch B hub external diameter; ∮ 2b, clutch B hub internal diameter; ∮ 2c, clutch B hub inner face internal diameter; ∮ 2d, clutch B hub internal spline reference circle; LB1, clutch B nave collar type large end face are to inner face width;
3, stem gear; 3a, stem gear a axle head; 3b, stem gear b increment male half coupling end face; 3b', stem gear b increment male half coupling bottom surface; 3d, stem gear d axle head; 3c, stem gear c increment male half coupling end face; 3c', stem gear c increment male half coupling bottom surface; ∮ 3a1, stem gear a axle head internal diameter; ∮ 3a2, cingulum arbor wheel a axle head external diameter; ∮ 3b, stem gear b increment male half coupling external diameter; ∮ 3c, stem gear c increment male half coupling external diameter; ∮ 3d1, stem gear d axle head internal diameter; ∮ 3d2, stem gear d axle head external diameter;
La1, clutch B nave collar type large end face are to the stem gear a axial end degree of depth; Ld1, clutch A nave collar type large end face are to the stem gear d axial end degree of depth;
4, be press-fitted bearing; 4a, be press-fitted bearing the first end face; 4a', be press-fitted bearing the second end face; 4b, be press-fitted bearing inner hole surface; 4c, be press-fitted bottom surface of support saddle; ∮ j, be press-fitted bearing endoporus internal diameter; L1, be press-fitted bearing the first to second end face size; 5, pressure head positioning sleeve; 5a, positioning sleeve end face; 5b, positioning sleeve inner hole surface; 6, be press-fitted pressure head; 6a, pressure head periphery; 6b, pressure head the first bottom surface; 6b', pressure head the second bottom surface; ∮ m1, pressure head end face chamfering circular diameter; ∮ m2, pressure head periphery external diameter; ∮ m3, positioning sleeve inner hole surface diameter; L2, pressure head the first to second bed-plate dimension; 7, positioning sleeve trip bolt; 8, seam bearing; 8a, seam bearing the first end face; 8a', seam bearing the second end face; 8b, seam bottom surface of support saddle; ∮ r1, seam bearing the first cylindrical external diameter; L3, seam bearing the first to second apical side height size; 9, seam bearing trip bolt; 10, press head of press pressure direction; 11, electron beam welding machine worktable; 12, electron beam; 13, welding-machine operation table gyratory directions;
One of illustrate: " ∮ 1c/ ∮ 3b " size marking in Fig. 1, represents respectively: clutch A hub inner face internal diameter ∮ 1c and stem gear b increment male half coupling external diameter ∮ 3b size, because the two belongs to hole axle class fit dimension, and coincide together, so mark; In like manner, " ∮ 3a1/ ∮ r1 " size marking in " ∮ 3d1/ ∮ r1 ", Figure 19 in " ∮ 1c/ ∮ 3b ", Figure 18 in Fig. 1, all belongs to hole axle and coordinates class size, so mark.
Illustrate two: " 3c/4a " numbering mark in Figure 13, Figure 14, represents respectively: stem gear c increment male half coupling end face 3c and be press-fitted bearing the first end face 4a, because the two laminating is placed, so mark; In like manner, " 3b/4a " numbering mark in Figure 15, Figure 16, also because laminating is placed, so mark.
Illustrate three: the clutch A hub 1 in above-mentioned accompanying drawing and clutch B hub 2 is same kind of parts, and the two is two clutch hub parts producing according to identical product detail drawing.In the utility model, for clearly explaining content described in the utility model, therefore the two is labeled as respectively clutch A hub and clutch B hub by it.
[specific embodiment]
By the following examples, can explain in more detail the utility model, open the purpose of this utility model is intended to protect all changes and improvements within the scope of the utility model, and the utility model is not limited to the following examples;
By reference to the accompanying drawings 4～11, described for clutch hub and stem gear component, be press-fitted seam assembly, comprise and be press-fitted bearing 4, pressure head positioning sleeve 5, be press-fitted pressure head 6 and seam bearing 8, the described bearing 4 that is press-fitted is ring-like convex-concave shape, is provided with and is press-fitted bearing the first end face 4a, is press-fitted bearing the second end face 4a', is press-fitted bearing inner hole surface 4b, is press-fitted bottom surface of support saddle 4c on it; It is ring-like interior step-like that described pressure head positioning sleeve 5 is, and is provided with positioning sleeve end face 5a, positioning sleeve inner hole surface 5b on it; The described pressure head 6 that is press-fitted is ring-like convex-concave shape, is provided with pressure head periphery 6a, pressure head the first bottom surface 6b, pressure head the second bottom surface 6b' on it; It is ring-like outer step-like that described seam bearing 8 is, and is provided with seam bearing the first end face 8a, seam bearing the second end face 8a', seam bottom surface of support saddle 8b on it.
By accompanying drawing 8～11, known, described pressure head positioning sleeve 5 be press-fitted pressure head 6, adopt positioning sleeve trip bolt 7 the two to be fastenedly connected into " pressure head component "; On described seam bearing 8, be provided with four seam bearing trip bolts 9.
By accompanying drawing 6, Fig. 7 and 1～3 know by reference to the accompanying drawings, described being press-fitted on bearing 4, be press-fitted bearing endoporus internal diameter ∮ j size and be greater than stem gear a axle head external diameter ∮ 3a2 size and stem gear d axle head external diameter ∮ 3d2 size, be press-fitted bearing endoporus internal diameter ∮ j-stem gear a axle head external diameter ∮ 3a2(or stem gear d axle head external diameter ∮ 3d2)=0.5mm～0.8mm; Be press-fitted bearing the first to second end face size L1 and be greater than clutch A nave collar type large end face to inner face width LA1 size and clutch B nave collar type large end face to inner face width LB1 size, be press-fitted bearing the first to second end face size L1-clutch A nave collar type large end face to inner face width LA1(or clutch B nave collar type large end face to inner face width LB1)=2mm～20mm.
By accompanying drawing 8, Fig. 9 and by reference to the accompanying drawings 1, Fig. 2 knows, on described pressure head positioning sleeve 5, positioning sleeve inner hole surface diameter ∮ m3 size is greater than clutch A hub external diameter ∮ 1a size or clutch B hub external diameter ∮ 2a size, positioning sleeve inner hole surface diameter ∮ m3-clutch A hub external diameter ∮ 1a (clutch B hub external diameter ∮ 2a)=0.4mm～0.8mm.
By accompanying drawing 8, Fig. 9 and 1～3 know by reference to the accompanying drawings, described is press-fitted on pressure head 6, pressure head the first to second bottom width L2 size is greater than clutch A nave collar type large end face to inner face width LA1 size and clutch B nave collar type large end face to inner face width LB1 size, L2-LA1(or LB1)=5mm～10mm; Pressure head end face chamfering circular diameter ∮ m1 size is greater than stem gear b increment male half coupling external diameter ∮ 3b size and stem gear c increment male half coupling external diameter ∮ 3c size, ∮ m1-∮ 3b(or ∮ 3c)=1mm～2mm; Pressure head periphery external diameter ∮ m2 size is less than clutch A hub internal diameter ∮ 1b size and clutch B hub internal diameter ∮ 2b size, clutch A hub internal diameter ∮ 1b(or clutch B hub internal diameter ∮ 2b)-pressure head periphery external diameter ∮ m2=3mm～6mm.
By accompanying drawing 10, Figure 11 and 1～3 know by reference to the accompanying drawings, on described seam bearing 8, seam bearing the first cylindrical external diameter ∮ r1 size is less than stem gear a axle head internal diameter ∮ 3a1 size and stem gear d axle head internal diameter ∮ 3d1 size, stem gear a axle head internal diameter ∮ 3a1(or stem gear d axle head internal diameter ∮ 3d1)-seam bearing first cylindrical external diameter ∮ r1=0.04mm～0.08mm; Seam bearing the first to second apical side height L3 size is greater than clutch A nave collar type large end face to stem gear a axial end degree of depth La1 size and clutch B nave collar type large end face to stem gear d axial end degree of depth Ld1 size, and seam bearing the first to second apical side height L3-clutch A nave collar type large end face is to stem gear a axial end degree of depth La1(or clutch B nave collar type large end face to stem gear d axial end degree of depth Ld1)=2mm～20mm.
By accompanying drawing 4～11 by reference to the accompanying drawings 1～3, above-mentioned " being press-fitted seam assembly " utility model content is further described:
1) being press-fitted on bearing 4 described in, be provided with and be press-fitted bearing the first end face 4a, be press-fitted bearing the second end face 4a', be press-fitted bearing inner hole surface 4b, regulation has ∮ j-∮ 3a2(or ∮ 3d2 in addition)=0.5mm～0.8mm, L1-LA1(or LB1)=2mm～20mm, its object has two: one, because regulation has ∮ j-∮ 3a2(or ∮ 3d2)=0.5mm～0.8mm, thereby be convenient to stem gear a axle head 3a(or stem gear d axle head 3d) successfully put into the bearing inner hole surface 4b face that is press-fitted, simultaneously can be using stem gear b increment male half coupling end face 3b(or stem gear c increment male half coupling end face 3c) part supporting surface during as pressurized, then solve the supporting surface being press-fitted in process and select problem, the 2nd, because regulation has L1-LA1(or LB1)=2mm～20mm, thereby can avoid having completed in advance the clutch A nave collar type large end face 1a ' (or clutch B nave collar type large end face 2a ' of clutch B hub 2) that is press-fitted clutch A hub 1 as part supporting surface be press-fitted bearing the second end face 4a' contact, there is compressive deformation situation, then play the effect of protection not subjected to pressure face.
2) on described " pressure head component ", be provided with positioning sleeve inner hole surface 5b, pressure head periphery 6a, pressure head the first bottom surface 6b, pressure head the second bottom surface 6b', regulation has pressure head end face chamfering circular diameter ∮ m1-stem gear b increment male half coupling external diameter ∮ 3b(or stem gear c increment male half coupling external diameter ∮ 3c in addition)=1mm～2mm, clutch A hub internal diameter ∮ 1b(or clutch B hub internal diameter ∮ 2b)-∮ m2=3mm～6mm, L2-LA1(or LB1)=5mm～10mm, ∮ m3-∮ 1a (∮ 2a)=0.4mm～0.8mm, its object has three: one, because regulation has ∮ m1-stem gear b increment male half coupling external diameter ∮ 3b(or ∮ 3c)=1mm～2mm and ∮ 1b(or ∮ 2b)-pressure head periphery external diameter ∮ m2=3mm～6mm, thereby be convenient to pressure head periphery 6a and avoid clutch A hub inner headed face 1b(or clutch B hub inner headed face 2b), successfully put into clutch hub inner chamber, and when pressure head the first bottom surface 6b is subject to external force, can directly pressure be reached to clutch A nave collar type inner face 1c(or clutch B nave collar type inner face 2c) on, part compression face while being about to it as pressurized, then solve the problem of the compression face selection being press-fitted in process, the 2nd, because regulation has pressure head the first to second bed-plate dimension L2-LA1(or LB1)=5mm～10mm, thereby can avoid the clutch A nave collar type large end face 1a ' (or clutch B nave collar type large end face 2a ' of clutch B hub 2) of clutch A hub 1 to contact pressurized with pressure head the second bottom surface 6b', there is compressive deformation situation in the compression face as part, then plays the effect of protection not subjected to pressure face, the 3rd, because regulation has ∮ m3-∮ 1a (∮ 2a)=0.4mm～0.8mm, thereby can play the effect of location by clutch A hub periphery 1a or clutch B hub periphery 2a, pressure head the first bottom surface 6b of being convenient to " pressure head component " implements to aim at clutch A nave collar type inner face 1c(or clutch B nave collar type inner face 2c rapidly) location placement, and can in " pressure head component " is press-fitted descending process, play the effect of guiding.
3) on described seam bearing 8, be provided with seam bearing the first end face 8a, seam bearing the second end face 8a', another regulation has ∮ 3a1(or ∮ 3d1)-∮ r1=0.04mm～0.08mm, L3-La1(or Ld1)=2mm～20mm, its object has two: one, because regulation has ∮ 3a1(or ∮ 3d1)-∮ r1=0.04mm～0.08mm, thereby can guarantee that stem gear a axle head internal diameter ∮ 3a1 or stem gear d axle head internal diameter ∮ 3d1 and seam bearing the first cylindrical external diameter ∮ r1 implement concentric locating; The 2nd, because regulation has L3-La1(or Ld1)=2mm～20mm, therefore there is the interference of concentric fit location in the time of can avoiding above-mentioned enforcement concentric fit location, the seam connection for next step provides good location to coordinate basis then.
Below, by accompanying drawing 12～19 by reference to the accompanying drawings 1～11, and for an embodiment, illustrate a kind of seaming method that is press-fitted for clutch hub and stem gear component.
In this embodiment, required several clutches A hub 1, the clutch B hub 2 that is press-fitted seam processed with the part machinery that stem gear 3 has completed separately, and through being up to the standards, its structural representation, as shown in accompanying drawing 1～3; The required seam assembly that is press-fitted, also completes, and meets making requirement, and its structural representation, as shown in accompanying drawing 4～11.
In this embodiment, " clutch hub and stem gear component " specification requirement after being press-fitted seam and connecting, mainly contains following 2 points:
1) clutch A hub internal spline reference circle ∮ 1d, clutch B hub internal spline reference circle ∮ 2d are ∮ 0.20mm with respect to the axiality of the benchmark of " stem gear a axle head internal diameter ∮ 3a1, stem gear d axle head internal diameter ∮ 3d1 " two centerline holes on stem gear 3.
2) be press-fitted the weld seam of seam connection place, require the weld defects such as smooth smooth, flawless, pore-free and slag inclusion.
In this embodiment, magnetic strength instrument model used is JCZ-5, and magnetic electronic Science and Technology Ltd. is got in manufacturer---Shanghai; Ultrasonic cleaner model used is KQ-500, manufacturer---city of Kunshan Dianshan Lake detecting instrument factory; Press full name used is single-column adjusting press-assembly hydraulic press, and model is Y41-10, factory---Tianjin forging equipment factory; Heating and thermal insulation stove full name used is electric heating constant-temperature blowing drying box, and model is DHG-9075A, manufacturer---upper Hailin is instrument limited company frequently; Described electron-beam welder model is EBW-6GD, manufacturer---Beijing Zhongke Electrical High-Tech. Co., Ltd.
In this embodiment, according to structure, the size characteristics of part, determine that the technological parameter that electron beam seam used connects is: weldering is dark: 2.5mm, 13 seconds weld intervals, speed of welding 29.1mm/ second, line 55.2.
Subsequently, enter the specific implementation process of " a kind of seaming method that is press-fitted for clutch hub and stem gear component " described in the utility model, step is as follows:
(1) interference is press-fitted:
1) piece test grouping:
The part remanent magnetism situation that the magnetic strength instrument that is 1-1) JCZ-5 by model is press-fitted need detects, and guarantees below the remanent magnetism Liang0.6Hao tesla of part separately, satisfactory, enters next step;
1-2) according to the fit tolerance of setting, fit dimension precision to part detects, and comprises that the dimensional accuracy of clutch A hub inner face internal diameter ∮ 1c, clutch B hub inner face internal diameter ∮ 2c, stem gear b increment male half coupling external diameter ∮ 3b, stem gear c increment male half coupling external diameter ∮ 3c detects;
1-3), according to the detection data of the above-mentioned dimensional accuracy of step, according to micro-interference, be press-fitted requirement, the magnitude of interference is controlled in 0.01mm～0.05mm, and clutch A hub 1, clutch B hub 2, stem gear 3 are divided into groups and give number-mark;
At this, screen 1,3 clutch B hubs 2 of 3 clutch A hubs and 3 stem gear 3 parts, and form respectively three groups, and be numbered respectively: 1# group, 2# group, 3# group;
2) cleaning is processed:
Part 2-1) need being press-fitted is put into clean iron ware, " 1#, 2#, 3# " the three groups of parts that are about to after grouping are put into clean iron ware, add " acetone soln ", and by part submergence 5 minutes, subsequently, the ultrasonic cleaner that is KQ-500 by model again cleans 15 minutes, after cleaning, takes out to be placed on workbench and naturally dries;
2-2) by clean cloth, dip " acetone soln " and again carry out cleaning processing, wiper element is press-fitted place and periphery position, guarantees that it must not have greasy dirt, moisture, rust staining, foreign material to exist;
3) interference is press-fitted operation:
According to number-mark, select to have detected one group of three part in grouping and the clutch A hub 1 after cleaning, clutch B hub 2, stem gear 3, press-fit, as selected 1# group part, be sequentially press-fitted operation as follows:
3-1) by being press-fitted bearing 4, be placed on the press workbench of single-column adjusting press-assembly hydraulic press that model is Y41-10, be press-fitted the table top laminating of bottom surface of support saddle 4c and press workbench, and the center line that is press-fitted bearing 4 is overlapped with press head of press axial line;
3-2) 1# being organized to stem gear 3 in part is placed on and is press-fitted on bearing 4, the axle journal that is about to stem gear d axle head 3d is put into the bearing inner hole surface 4b face that is press-fitted, and make stem gear c increment male half coupling end face 3c and be press-fitted bearing the first end face 4a laminating, the part supporting surface while being about to stem gear c increment male half coupling end face 3c as pressurized;
3-3) 1# being organized to clutch A hub 1 in part is placed on stem gear 3, wherein, clutch A nave collar type large end face 1a ' places upward, and clutch A hub inner face internal diameter ∮1c import department contacts with stem gear b increment male half coupling external diameter ∮3b import department, and range estimation is set level;
3-4) pressure head positioning sleeve 5 and " the pressure head component " that be press-fitted pressure head 6 compositions are placed on clutch A hub 1, wherein, pressure head the first bottom surface 6b and clutch A nave collar type inner face 1c laminating, part compression face while being about to clutch A nave collar type inner face 1c as pressurized, meanwhile, positioning sleeve inner hole surface 5b ring set is on clutch A hub periphery 1a;
3-5) start the press head of press of single-column adjusting press-assembly hydraulic press, under the pressure-acting of press head of press, 5a is stressed for positioning sleeve end face, cause above-mentioned " pressure head component ", clutch A hub 1 to move down along press head of press pressure direction 10, force the outer small end face 1c' of clutch A nave collar type place to come downwards to 3b' place, stem gear b increment male half coupling bottom surface, then the interference that completes clutch A hub inner face internal diameter ∮ 1c and stem gear b increment male half coupling external diameter ∮ 3b is press-fitted process, complete the process that is press-fitted of clutch A hub 1, subsequently, press head of press reposition;
3-6) take off above-mentioned " pressure head component ", and unload with stem gear 3 disjunctors completing the clutch A hub 1 being press-fitted, overturn after 180 °, be placed on again and be press-fitted on bearing 4, be about to stem gear a axle head 3a and put into the bearing inner hole surface 4b face that is press-fitted, and make stem gear b increment male half coupling end face 3b and be press-fitted bearing the first end face 4a laminating, the part supporting surface while being about to stem gear b increment male half coupling end face 3b as pressurized;
3-7) 1# being organized to clutch B hub 2 in part is placed on stem gear 3, wherein, clutch B nave collar type large end face 2a ' places upward, and clutch B hub inner face internal diameter ∮2c import department contacts with stem gear b increment male half coupling external diameter ∮3b import department, and range estimation is set level;
3-8) above-mentioned " pressure head component " is placed on clutch B hub 2, wherein, pressure head the first bottom surface 6b and clutch B nave collar type inner face 2c laminating, part compression face while being about to clutch B nave collar type inner face 2c as pressurized, meanwhile, positioning sleeve inner hole surface 5b ring set is on clutch B hub periphery 2a;
3-9) start the press head of press of single-column adjusting press-assembly hydraulic press, under the pressure-acting of press head of press, 5a is stressed for positioning sleeve end face, cause above-mentioned " pressure head component ", clutch B hub 2 to move down along press head of press pressure direction 10, force the outer small end face 2c' of clutch B nave collar type place to come downwards to 3c' place, stem gear c increment male half coupling bottom surface, then the interference that completes clutch B hub inner face internal diameter ∮ 2c and stem gear c increment male half coupling external diameter ∮ 3c is press-fitted process, complete the process that is press-fitted of clutch B hub 2, subsequently, press head of press reposition;
3-10) take off above-mentioned " pressure head component ", and take off the 1# group disjunctor component that completes " clutch A hub 1, the clutch B hub 2 and stem gear 3 " that be press-fitted, whether range estimation flattens and is pressed onto position, satisfactory, enters next step;
3-11) return to step 3-2) front, and select the grouping after testing of next group, " clutch A hub 1, clutch B hub 2, stem gear 3 " three parts after cleaning according to number-mark, select 2# group part, repeat step thereafter, and return to again step 3-2 after this group part has been press-fitted) front, select 3# group part, repeat step thereafter, until be all press-fitted complete;
4) will be press-fitted bearing 4 and take out from press workbench, and finish interference and be press-fitted work, and enter next seam and connect job step;
(2) seam connects:
1) seam bearing is placed:
Open the door for vacuum chamber that model is the electron-beam welder of EBW-6GD, seam bearing 8 is placed on the table top of electron beam welding machine worktable 11, and seam bottom surface of support saddle 8b is fitted with it, in addition, the centre of gyration of seam bearing 8 overlaps consistent with the centre of gyration of electron beam welding machine worktable 11, and with seam bearing trip bolt 9 by the two tight joint, close subsequently the door for vacuum chamber of electron-beam welder;
2) component preheating insulation:
2-1) several clutch hubs and the stem gear component being press-fitted will be completed, completed " 1#, 2#, 3# " sub-assembly that interference is press-fitted early stage, " electric heating constant-temperature blowing drying box " heating and thermal insulation stove of putting into external model and being DHG-9075A carries out weld preheating insulation, and preheating insulation temperature is controlled in 140 °～160 °;
2-2), when clutch hub and stem gear component reach after preheating insulation temperature, hand is worn proximity gloves therefrom will take out one, as 1# sub-assembly, at once enter next operating procedure;
3) electron beam welding connects:
3-1) open the door for vacuum chamber of electron-beam welder, hand is worn proximity gloves an one end that is press-fitted the clutch hub of rear component (as 1# sub-assembly) and the clutch B hub 2 of stem gear component is placed on seam bearing 8 down, wherein, stem gear d axle head internal diameter ∮ 3d1 coordinates concentric locating with seam bearing the first cylindrical external diameter ∮ r1, simultaneously, the ring-like end face of stem gear d axle head 3d and seam bearing the first end face 8a' laminating axial location, closes the door for vacuum chamber of electron-beam welder subsequently;
3-2) implement electron beam welding, under the welding condition of setting, start electron-beam welder, the clutch hub and the stem gear component that are placed on seam bearing 8 turn round along welding-machine operation table gyratory directions 13, meanwhile, welding is implemented in clutch A hub inner face internal diameter ∮ 1c and stem gear b increment male half coupling external diameter ∮ 3b junction that electron beam 12 is aimed at after being press-fitted, until weld complete, subsequently, electron-beam welder quits work;
3-3) open the door for vacuum chamber of electron-beam welder, hand is worn proximity gloves and will be completed clutch A hub 1 that seam connects with stem gear 3 and clutch B hub 2 disjunctors that seam does not connect unload, and overturn after 180 ° and be placed on again on seam bearing 8, wherein, stem gear a axle head internal diameter ∮ 3a1 coordinates concentric locating with seam bearing the first cylindrical external diameter ∮ r1, simultaneously, the ring-like end face of stem gear a axle head 3a and seam bearing the first end face 8a' laminating axial location, closes the door for vacuum chamber of electron-beam welder subsequently;
3-4) implement electron beam welding, the same, setting under welding condition, the clutch hub and the stem gear component that are placed on seam bearing 8 turn round along welding-machine operation table gyratory directions 13, meanwhile, welding is implemented in clutch B hub inner face internal diameter ∮ 2c and stem gear c increment male half coupling external diameter ∮ 3c junction that electron beam 12 is aimed at after being press-fitted, until weld complete, subsequently, electron-beam welder quits work;
3-5) open the door for vacuum chamber of electron-beam welder, hand is worn proximity gloves and (as the 1# sub-assembly) component completing after " clutch A hub 1, clutch B hub 2 and stem gear 3 " seam connects is taken off, and is again put back in external " electric heating constant-temperature blowing drying box " heating and thermal insulation stove;
3-6) return to step 2) in 2-2) before step, from " electric heating constant-temperature blowing drying box " heating and thermal insulation stove, take out again a component that seam does not connect, as 2# sub-assembly, repeat step thereafter, and connected and put back to after external " electric heating constant-temperature blowing drying box " heating and thermal insulation stove in this component seam, return to again step 2) in 2-2) before step, take out a component that seam does not connect, as 3# sub-assembly, repeat step thereafter, until all seam connects complete and puts back in external " electric heating constant-temperature blowing drying box " heating and thermal insulation stove;
3-7) seam bearing 8 is unloaded from electron beam welding machine worktable 11, enter next operating procedure;
4) postwelding is self cooling with stove:
After seam connects several complete components (as " 1#, 2#, 3# " three sub-assemblies) and all puts back in external " electric heating constant-temperature blowing drying box " heating and thermal insulation stove, close the power supply of " electric heating constant-temperature blowing drying box " heating and thermal insulation stove, allow its component naturally cool to room temperature with the temperature in its stove, take out subsequently, so far, the described seam work that is press-fitted for clutch hub and stem gear component, all finishes to this.
Illustrate: above-mentioned rear " 1#, 2#, 3# " three sub-assemblies of seam connection that are press-fitted, through check, all meet the specification requirement being press-fitted after seam connects, axiality is all controlled at below ∮ 0.20mm, and weld seam is continuous, smooth smooth, the weld defects such as flawless, pore-free and slag inclusion.
By accompanying drawing 12～19 by reference to the accompanying drawings 1～11, above-mentioned " being press-fitted seaming method " utility model content is further described:
1) described " piece test grouping " technical measures of taking, system is by adopting magnetic strength instrument to detect on the one hand, prevent that part after machined residue magnetic force from connecting and exerting an influence follow-up electron beam seam, avoid causing because of remanent magnetism the problem generation that is press-fitted diameter decentraction of beam trace that electronic beam current skew causes and clutch hub and stem gear component; Be to divide into groups to be press-fitted by enforcement on the other hand, the matching allowance of keeping under strict control, avoid because of the magnitude of interference excessive or too small cause be press-fitted and seam after clutch hub deformation occur.
2) described " cleaning processing " technical measures of taking, in order to prevent from remaining in greasy dirt that on part, especially " clutch A hub inner face internal diameter ∮ 1c, clutch B hub inner face internal diameter ∮ 2c, stem gear b increment male half coupling external diameter ∮ 3b, stem gear c increment male half coupling external diameter ∮ 3c size " located, moisture, rust staining, foreign material etc., to affect interference and be press-fitted the quality being connected with seam.
3) described " component preheating insulation " technical measures of taking, are for further wipe oil and moisture on the one hand, reduce and stop follow-up seam to be connected to the impact producing because of it; Be for when its follow-up seam connects on the other hand, prevent that abrupt change (temperature sharply rises) from appearring in the local temperature of part seam place, its objective is the welding stress in order to reduce seam and to connect, prevent the generation of the weld defects such as crackle.
4) described employing " enforcement electron beam welding " technical measures, it is large that system has power density because of electron beam welding, can realize high-aspect-ratio weld seam, speed of welding is fast, centralized heat energy, and heat affected area is little, the feature that welding deformation is little, in addition, the comparing of seam connecting process after being press-fitted with regard to its " clutch hub and stem gear component " test shows, the connecting mode that adopts electron beam seam connecting mode to weld kind than other easily reaches its object.
5) described employing " postwelding is self cooling with stove " technical measures, the same, be to prevent that seam from connecting rear component temperature and occurring abrupt change (temperature sharply declines), cause metallographic structure to change, be prone to bead crack, then have influence on " clutch hub and stem gear component " seam and connect quality.
6) in " interference is press-fitted " described above, system takes to be first press-fitted " being press-fitted clutch B hub 2 after clutch A hub 1 " step and operates, because the two is same kind of parts, be that the two is two clutch hub parts producing according to identical product detail drawing, therefore also can take " being press-fitted clutch A hub 1 after being first press-fitted clutch B hub 2 " step to operate; In like manner, in " seam connection " described above, also can take " the rear seam clutch A hub 1 of first seam clutch B hub 2 " step to operate.
The utility model does not describe part in detail for prior art.
The embodiment selecting in this article for open the purpose of this utility model, current think suitable, but will be appreciated that, the utility model is intended to comprise that all belong to all changes and the improvement of the embodiment within the scope of this design and the utility model.
Claims (2)
1. one kind is press-fitted seam assembly for clutch hub and stem gear component, comprise and be press-fitted bearing, pressure head positioning sleeve, be press-fitted pressure head and seam bearing, it is characterized in that: described in be press-fitted bearing and be ring-like convex-concave shape, on it, be provided with and be press-fitted bearing the first end face, be press-fitted bearing the second end face, be press-fitted bearing inner hole surface, be press-fitted bottom surface of support saddle; It is ring-like interior step-like that described pressure head positioning sleeve is, and is provided with positioning sleeve end face, positioning sleeve inner hole surface on it; The described pressure head that is press-fitted is ring-like convex-concave shape, is provided with pressure head periphery, pressure head the first bottom surface, pressure head the second bottom surface on it; Described pressure head positioning sleeve be press-fitted pressure head, adopt positioning sleeve trip bolt the two to be fastenedly connected into " pressure head component "; It is ring-like outer step-like that described seam bearing is, and is provided with seam bearing the first end face, seam bearing the second end face, seam bottom surface of support saddle on it.
According to claim 1 for clutch hub and stem gear component be press-fitted seam assembly, it is characterized in that: on described seam bearing, be provided with four seam bearing trip bolts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639489.8U CN203527361U (en) | 2013-10-17 | 2013-10-17 | Press-fit welding-on assembly for combination part formed by clutch hubs and gear with shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320639489.8U CN203527361U (en) | 2013-10-17 | 2013-10-17 | Press-fit welding-on assembly for combination part formed by clutch hubs and gear with shaft |
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| CN203527361U true CN203527361U (en) | 2014-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507024A (en) * | 2013-10-17 | 2014-01-15 | 第一拖拉机股份有限公司 | Press-fit welding assembly and press-fit welding method of combined piece of hubs of clutch and shaft gear |
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2013
- 2013-10-17 CN CN201320639489.8U patent/CN203527361U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103507024A (en) * | 2013-10-17 | 2014-01-15 | 第一拖拉机股份有限公司 | Press-fit welding assembly and press-fit welding method of combined piece of hubs of clutch and shaft gear |
| CN103507024B (en) * | 2013-10-17 | 2015-08-12 | 第一拖拉机股份有限公司 | A kind ofly be press-fitted seam assembly and method for clutch hub and stem gear component |
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