The making method of pinned connection assembly and bearing pin thereof, bearing pin
Technical field
The present invention relates to pinned connection technical field, relate to a kind of bearing pin particularly.In addition, the invention still further relates to a kind of making method of this bearing pin.In addition, the invention still further relates to a kind of pinned connection assembly of this bearing pin of application.The present invention is mainly developed in location, is generally be used in the location of axle, rod member or other component, is namely generally used in being rigidly connected.Therefore, describing the present invention about this purposes is easily, but should be appreciated that, the present invention can be used to axle, rod member or other component hinged in, in namely can being used to flexibly connect.
Background technique
Pinned connection uses quite extensive at mechanical field, as alignment pin all employs alignment pin in the component such as split type speed reducer, Split bearing pedestal, axle or rod member; And for example in engineering machinery, connecting between vehicle frame with vehicle frame, connecting between vehicle frame with equipment, connection that equipment individual components is mutual, all employ hinging pin shaft.But the design standard that pin shaft structure is ununified, when the actual design of pin shaft structure, different types, designer, the pin shaft structure designed varies, and using effect is not very good yet.
At present, as in locating stud, the phenomenon that straight pin or taper pin in use can be deviate from due to the effect repeatedly vibrated, especially when dismounting, the less bearing pin of use one is needed to be up to by locating stud from its one end, now be easy to original positioning pin hole to cause damage compared with small clevis pin with head, thus affect locating effect.
And for example conventional bearing pin, one end major part the other end relies on cotter pin to lock usually, not only there is cotter pin damage and cause out of stock possibility, and the necessary protrudent pin axle bed in bearing pin two ends, thus need the space more roomy than axis pin base, pinned connection place is made to need larger space, cause and use the engineering machinery of pin shaft connection structure just to need larger spatial structure, thus result in the related components huge structure of engineering machinery, larger inhibition is served to the raising of the performance of engineering machinery.
Therefore, how to improve and optimize the structure of pinned connection assembly, improve the reliability of pinned connection assembly, and to reduce that its institute takes up space be the important technological problems that those skilled in the art need solution at present.
Summary of the invention
The object of this invention is to provide a kind of bearing pin, for pinned connection assembly, this pin shaft structure is simple, and axial occupation space is short, and the reliability of connection is high, and processing and fabricating is simple, thus contributes to the performance improving the engineering machinery using it.
Second object of the present invention is to provide a kind of pinned connection assembly with above-mentioned bearing pin.
3rd object of the present invention is to provide a kind of making method based on above-mentioned bearing pin or pinned connection assembly.
For realizing above-mentioned first object, the invention provides a kind of bearing pin, for pinned connection assembly, comprise cylindrical body, described cylindrical one end is provided with thread section, the other end of described thread section is provided with bearing pin head, is provided with changeover portion one between described cylindrical body and described thread section, is provided with changeover portion two between described thread section and described bearing pin head.
Preferably, the diameter of described thread section is greater than described cylindrical diameter, and the path of screw thread on described thread section is greater than or equal to described cylindrical diameter.
Preferably, the diameter of described thread section is greater than the external diameter of described bearing pin head, and the path of screw thread on described thread section is greater than or equal to the maximum outside diameter of the appearance profile of described bearing pin head.
Preferably, described bearing pin head is square spigot.
Preferably, described square spigot is hexagon head, and its cross section is regular hexagon, and intersection, each limit is all provided with chamfering or fillet.
Preferably, described changeover portion one adopts the form of arc transition to connect described cylindrical body and described thread section.
Preferably, described changeover portion two adopts the form of arc transition to connect described bearing pin head and described thread section, and the path of described changeover portion two is greater than or equal to the maximum outside diameter of the appearance profile of described bearing pin head, and described changeover portion two adopts the transient mode of rounding again with the non-maximum outside diameter place of the appearance profile of described bearing pin head.
Preferably, the screw thread on described thread section adopts V thread screw or square threaded form, trapezoidal thread, buttress thread form, also can adopt other special shape screw thread.
For realizing above-mentioned second object, a kind of pinned connection assembly provided by the invention comprises any one bearing pin above-mentioned.
For realizing above-mentioned 3rd object, the invention provides a kind of making method based on above-mentioned bearing pin or pinned connection assembly, comprising the following steps:
Step 1, adopts round steel or bar to carry out the blanking of bearing pin.
Step 2, carries out the preparatory processing of appearance profile by lower good material, comprise the first car of the appearance profile to each section of bearing pin, and leave suitable surplus.
Step 3, carries out quenching with Subsequent tempering to the part through preparatory processing.
Step 4, process described bearing pin head, comprise each side of milling square spigot and chamfering or rounding carried out to the intersection of adjacent side, and adopt milling cutter vertical with bearing pin but disjoint mode directly to reach the object that described changeover portion two and the non-maximum outside diameter place of the appearance profile of described bearing pin head adopt the transient mode of rounding again.
Step 5, processes described thread section, described cylindrical body and described changeover portion one and described changeover portion two, comprises changeover portion two and threading described in changeover portion one, car described in cylindrical body described in car, car.Wherein described in car, described in cylindrical body, car, the processing sequence of changeover portion described in changeover portion one, car can suitably adjust as required.
Step 6, carries out chamfering or rounding process to the end of described cylindrical disconnected section.
Step 7, carries out fine finishing to described cylindrical cylindrical, to ensure that its surface roughness reaches usage requirement.
Wherein, in step 1, the material manufacturing multiple bearing pin can being connected together, again each being separated close to completing bearing pin after experience step 2 to step 7, thus realize once can processing multiple bearing pin, raise the efficiency.
Compared with prior art, a kind of bearing pin provided by the invention, for pinned connection assembly, comprise cylindrical body, described cylindrical one end is provided with thread section, the other end of described thread section is provided with bearing pin head, is provided with changeover portion one between described cylindrical body and described thread section, is provided with changeover portion two between described thread section and described bearing pin head.Adopt the pin shaft structure of this technological scheme simple, axial occupation space is short, and the reliability of connection is high, and processing and fabricating is simple, thus contributes to the performance improving the engineering machinery using it.The pinned connection assembly with above-mentioned bearing pin provided by the invention has whole technical advantages of above-mentioned bearing pin, is not repeated herein.A kind of making method course of working based on above-mentioned bearing pin or pinned connection assembly provided by the invention is simple, can realize mass production, be conducive to reducing cost of production.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The assembly structure schematic diagram of the bearing pin that Fig. 1 provides for a kind of specific embodiment of the present invention.
Fig. 2 is the A direction view in Fig. 1.
Fig. 3 is the sectional view intercepted along the BB in Fig. 2.
The A direction view of the assembly structure schematic diagram of the bearing pin that Fig. 4 provides for the second specific embodiment of the present invention.
Embodiment
The object of this invention is to provide a kind of bearing pin, for pinned connection assembly, this this pin shaft structure is simple, and axial occupation space is short, and the reliability of connection is high, and processing and fabricating is simple, thus contributes to the performance improving the engineering machinery using it.Second object of the present invention is to provide a kind of pinned connection assembly with above-mentioned bearing pin.3rd object of the present invention is to provide a kind of making method based on above-mentioned bearing pin or pinned connection assembly.
In order to make those skilled in the art person understand technological scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
Please refer to Fig. 1, Fig. 2 and Fig. 3, the assembly structure schematic diagram of the bearing pin that Fig. 1 provides for a kind of specific embodiment of the present invention; Fig. 2 is the A direction view in Fig. 1; Fig. 3 is the sectional view intercepted along the BB in Fig. 2.
In a kind of specific embodiment, as shown in Figure 1, a kind of bearing pin 1 provided by the invention, comprise cylindrical body 11, one end of cylindrical body 11 is provided with thread section 13, the other end of thread section 13 is provided with bearing pin head 15, is provided with changeover portion 1 between cylindrical body 11 and thread section 13, is provided with changeover portion 2 14 between thread section 13 and bearing pin head 15.Its feature comprises, the diameter of thread section 13 is greater than the diameter of cylindrical body 11, and the path of the screw thread on thread section 13 is greater than or equal to the diameter of cylindrical body 11, and the diameter of thread section 13 is greater than the external diameter of bearing pin head 15, and the path of screw thread on thread section 13 is greater than or equal to the maximum outside diameter of the appearance profile of bearing pin head 15.Like this, not only make the object that this bearing pin reaches default, and be convenient to processing.
During work, intermediate portion on cylindrical body 11 or the target part connected for the pinned connection assembly installing this bearing pin 1 involved away from one end of thread section 13, thread section 13 loads in the pin shaft hole of the correspondence of axis pin base, and the bearing pin head 15 of correspondence also can load in the pin shaft hole of correspondence of axis pin base.Wherein, its one end or two ends are arranged in the pin shaft hole of axis pin base by cylindrical body 11 as required.
Further, please refer to Fig. 2, bearing pin head 15 is square spigot.Further, square spigot is hexagon head, and its cross section is regular hexagon, and intersection, each limit is all provided with chamfering or fillet.
On the basis of above-mentioned arbitrary technological scheme, further improvement can also be done.Particularly, please refer to Fig. 3, changeover portion 1 adopts form connecting cylinder body 11 and the thread section 13 of arc transition.Further, changeover portion 2 14 adopts form connecting pin spindle nose 15 and the thread section 13 of arc transition.Further, the path of changeover portion 2 14 is greater than or equal to the maximum outside diameter of the appearance profile of bearing pin head 15.Again further, changeover portion 2 14 and the non-maximum outside diameter place of the appearance profile of bearing pin head 15 adopt the transient mode of rounding again.
As shown in Figure 3, the screw thread on thread section 13 adopts the form of V thread screw.Equally, the screw thread on this thread section 13 can also adopt square threaded form, trapezoidal thread, buttress thread form or other special shape screw thread.
On the basis of above-mentioned arbitrary technological scheme, further improvement can also be done.Particularly, please refer to Fig. 4, the A direction view of the assembly structure schematic diagram of the bearing pin that Fig. 4 provides for the second specific embodiment of the present invention.
As shown in Figure 3, the diameter of the cylinder at the intersection line place of adjacent each of the square spigot of bearing pin head 15 equals the path of changeover portion 2 14.In addition, as shown in Figure 4, apparently, the diameter of the cylinder at the intersection place of each adjacent side of bearing pin head 15 can be greater than the path of changeover portion 2 14, now chamfering is carried out in the suitable intersection to each adjacent side of bearing pin head 15, and the path of changeover portion 2 14 can be made to be greater than or equal to the maximum outside diameter of the appearance profile of bearing pin head 15.In addition, apparently, the diameter of the cylinder at the intersection line place of adjacent each of the square spigot of bearing pin head 15 suitably can also be less than the path of changeover portion 2 14.
Second object of the present invention is to provide a kind of pinned connection assembly, comprises bearing pin and the axis pin base with its adaptation, and described bearing pin is the bearing pin in any one technological scheme above-mentioned.
In addition, the 3rd object of the present invention is to provide a kind of making method based on above-mentioned bearing pin or pinned connection assembly, comprises the following steps:
Step 1, adopts round steel or bar to carry out the blanking of bearing pin.
Step 2, carries out the preparatory processing of appearance profile by lower good material, comprise the first car of the appearance profile to each section of bearing pin, and leave suitable surplus.
Step 3, carries out quenching with Subsequent tempering to the part through preparatory processing.
Step 4, process described bearing pin head, comprise each side of milling square spigot and chamfering or rounding carried out to the intersection of adjacent side, and adopt milling cutter vertical with bearing pin but disjoint mode directly to reach the object that described changeover portion two and the non-maximum outside diameter place of the appearance profile of described bearing pin head adopt the transient mode of rounding again.
Step 5, processes described thread section, described cylindrical body and described changeover portion one and described changeover portion two, comprises changeover portion two and threading described in changeover portion one, car described in cylindrical body described in car, car.Wherein described in car, described in cylindrical body, car, the processing sequence of changeover portion described in changeover portion one, car can suitably adjust as required.
Step 6, carries out chamfering or rounding process to the end of described cylindrical disconnected section.
Step 7, carries out fine finishing to described cylindrical cylindrical, to ensure that its surface roughness reaches usage requirement.
Wherein, in step 1, the material manufacturing multiple bearing pin can being connected together, again each being separated close to completing bearing pin after experience step 2 to step 7, thus realize once can processing multiple bearing pin, raise the efficiency.
It should be noted that, those skilled in the art can comparatively simply can not understand or this making method of comprehension with reference to any accompanying drawing completely when the making method with reference to this bearing pin or pinned connection assembly.Therefore, the accompanying drawing of this part is not provided in the present invention.
Compared with prior art, a kind of bearing pin provided by the invention, comprise cylindrical body, described cylindrical one end is provided with thread section, the other end of described thread section is provided with bearing pin head, be provided with changeover portion one between described cylindrical body and described thread section, between described thread section and described bearing pin head, be provided with changeover portion two.Adopt the pin shaft structure of this technological scheme simple, axial occupation space is short, and the reliability of connection is high, and processing and fabricating is simple, thus contributes to the performance improving the engineering machinery using it.The pinned connection assembly with above-mentioned bearing pin provided by the invention has whole technical advantages of above-mentioned bearing pin, is not repeated herein.A kind of making method course of working based on above-mentioned bearing pin or pinned connection assembly provided by the invention is simple, can realize mass production, be conducive to reducing cost of production.
Above the making method of pinned connection assembly provided by the present invention and bearing pin thereof, bearing pin is described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.