CN115126791B - Lightweight cross axle - Google Patents
Lightweight cross axle Download PDFInfo
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- CN115126791B CN115126791B CN202211050088.9A CN202211050088A CN115126791B CN 115126791 B CN115126791 B CN 115126791B CN 202211050088 A CN202211050088 A CN 202211050088A CN 115126791 B CN115126791 B CN 115126791B
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- positioning
- cross shaft
- face
- shaft
- lightweight
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
- F16D3/40—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another with intermediate member provided with two pairs of outwardly-directed trunnions on intersecting axes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
Abstract
The invention relates to the field of vehicle parts, in particular to a light-weight cross shaft, which comprises: the cross axle body, location boss and axle journal, the cross axle body includes the body terminal surface, the body side, body outer inclined plane and body internal inclined plane, the location boss includes location portion and location lateral plane, the location boss, axle journal circumference evenly arranges in the body side, body outer inclined plane and body terminal surface, body side junction rounding off, body outer inclined plane and body internal inclined plane incline opposite direction, the location boss is oval and its major axis endpoint is higher than the body terminal surface, the inboard bottom in location portion extends to body inclined plane and body terminal surface junction, location portion outside bottom extends to body inclined plane and body terminal surface junction. Therefore, the problems of low positioning precision, poor positioning stability and large overall weight of the cross shaft are solved.
Description
Technical Field
The invention relates to the field of vehicle parts, in particular to a light-weight cross shaft.
Background
The cross shaft, also known as a cross joint, is a part for realizing variable-angle power transmission, is used for needing to change the position of the transmission axis direction, is a joint part of a universal transmission device of an automobile driving system, is one of key parts of the universal joint, is provided with four middle transmission elements with radially and uniformly distributed journals in the same plane, is provided with bearings at four ends to reduce resistance, is respectively arranged in fork ports of two fork joints in pairs, is easy to break because the cross shaft usually bears the driving force for driving wheels, and has higher requirements on the processing quality of the cross shaft.
The conventional cross shaft is not provided with a clamping positioning part, self-positioning clamping can not be realized during turning, a center hole needs to be drilled in the shaft end face, the end face center hole is used as a positioning reference to complete subsequent process machining, however, a product machined according to the positioning reference can lead to a subsequent product design reference, the process reference and a detection reference are not unified, the form and position tolerance precision of the machined product is not enough, the product design requirement can not be met, the process route of the product is elongated, the production efficiency is reduced, the utilization rate of raw materials is low, the weight can be increased by directly arranging a protruding face on the end face of the cross shaft, the positioning protruding face is smaller, the positioning protruding face is not matched with a positioning block, the positioning is not firm, and the problems that the cross shaft machining effect is poor, the qualified rate is low and the like are caused.
Disclosure of Invention
The invention provides a light-weight cross shaft convenient to machine and position, and aims to solve the problems of low positioning precision, poor positioning stability and large overall weight of the cross shaft.
In a first aspect, the present invention provides a lightweight cross comprising: the universal joint pin comprises a universal joint pin body, a positioning boss and a shaft neck, and is characterized in that the positioning boss is arranged between the universal joint pin body and the shaft neck, the positioning boss is oval, the positioning boss comprises positioning parts which are symmetrically arranged, and the positioning parts are positioned on a cambered surface between a long shaft end point and a short shaft end point of the positioning boss.
In some embodiments, the cross shaft body includes a body end surface, a body side surface, an outer body inclined surface and an inner body inclined surface, the positioning boss further includes a positioning side plane, the outer body inclined surface is in smooth transition with the body end surface and the body side surface at the joint, the outer body inclined surface is opposite to the inner body inclined surface in inclination direction, the inner side bottom end of the positioning portion extends to the joint of the outer body inclined surface and the body end surface, and the outer side bottom end of the positioning portion extends to the joint of the outer body inclined surface and the body side surface.
In some embodiments, the central axis of the locating boss coincides with the central axis of the journal.
In some embodiments, the width of the positioning portion is 3-5mm.
In some embodiments, the body end face and the body outer inclined face are both planar, and an included angle between the body end face and the body outer inclined face is 30 to 60 degrees.
In some embodiments, the side surface of the body and the inner slope of the body are both planes, and an included angle between an extension line of the side surface of the body and an extension line of the inner slope of the body is 15 to 45 degrees.
In some embodiments, the body inner chamfer depth is no more than 1/3 of the cross-shaft body.
In some embodiments, the top end of the positioning boss is provided as a plane or an inner concave surface.
In some embodiments, the distance from the apex of the positioning boss to the end face of the body is 3-7mm.
In a second aspect, the invention provides a method for machining a lightweight cross shaft, comprising the following steps:
s1, mounting a positioning block and a pressure rod on an index chuck;
s2, placing the lightweight universal joint pin on the positioning block, and realizing positioning by contacting the positioning part with the V-shaped groove on the positioning block;
s3, descending the pressure rod to press the lightweight cross shaft;
s4, the index chuck drives the positioning block and the pressure rod to rotate at a high speed, and then the lightweight cross shaft is driven to rotate at a high speed;
s5, machining the excircle and the blind hole of one shaft neck of the lightweight cross shaft by using a turning tool;
s6, after the journal is machined, the indexing device of the indexing chuck drives the lightweight cross shaft to automatically rotate by 90 degrees, and the next journal is machined continuously;
and S7, after all shaft necks of the lightweight universal joint pin are machined, the pressure rod rises, and machining of the lightweight universal joint pin is completed.
In order to solve the problems of low positioning precision, poor positioning stability and large overall weight of the cross shaft, the invention has the following beneficial effects:
the positioning boss is provided with the oval positioning boss, the focal point of the long shaft of the positioning boss is higher than the end face of the cross body, so that double-sided positioning of the cross shaft can be realized, accurate positioning in the turning process is ensured, outer inclined planes of the cross shaft are machined on the upper side and the lower side of the side face of the cross shaft body, the strength of the cross shaft is ensured, the weight of the cross shaft is reduced, and a light-weight effect is achieved.
Drawings
FIG. 1 shows a schematic view of a lightweight cross shaft according to the present invention;
FIG. 2 shows a top view of the lightweight cross of the present invention;
FIG. 3 is a schematic view of the positioning boss of the lightweight spider of the present invention;
FIG. 4 shows a cross-sectional view of the cross body of the lightweight cross of the present invention;
FIG. 5 shows a schematic structural view of another lightweight cross of the present invention;
FIG. 6 is a schematic view of the positioning boss of another lightweight spider of the present invention;
FIG. 7 shows a schematic structural view of another lightweight cross of the present invention;
FIG. 8 is a schematic view of the positioning boss of another lightweight spider of the present invention;
FIG. 9 shows a schematic structural view of a locating block of the present invention;
FIG. 10 is a schematic view of the positioning of the lightweight cross shaft and the positioning block of the present invention;
FIG. 11 is a flow chart illustrating a method of manufacturing a lightweight spider according to the present invention.
10. A cross shaft body;
101. a body end face;
102. a body side;
103. an outer inclined plane of the body;
104. the center of the cross shaft;
105. an inner inclined plane of the body;
20. positioning the boss;
201. a positioning part;
202. positioning a side plane;
30. a journal;
40. positioning blocks;
401 And a V-shaped groove.
Detailed Description
The disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those of ordinary skill in the art to better understand and thus implement the present disclosure, and are not intended to imply any limitation on the scope of the present disclosure.
As used herein, the term "include" and its variants are to be read as open-ended terms meaning "including, but not limited to. The term "based on" is to be read as "based, at least in part, on". The terms "one embodiment" and "an embodiment" are to be read as "at least one embodiment". The term "another embodiment" is to be read as "at least one other embodiment".
The cross shaft is a machine part for realizing variable-angle power transmission and is used for changing the position of a transmission axis direction, the cross shaft is provided with four middle transmission elements with radially and uniformly distributed shaft necks in the same plane, four ends are provided with bearings for reducing resistance, every two cross shafts are respectively arranged in the fork openings of two fork joints, the cross shaft always bears the driving force for driving wheels, shaft breakage easily occurs, and high requirements are brought to the processing quality of the cross shaft.
To solve the above problem, the present embodiment discloses a lightweight cross shaft convenient for turning and positioning, as shown in fig. 1 to 3, which may include: the cross shaft comprises a cross shaft body 10, a positioning boss 20 and a shaft neck 30, wherein the positioning boss 20 can be arranged between the cross shaft body 10 and the shaft neck 30, the positioning boss 20 can be in an oval shape, the positioning boss 20 can comprise positioning portions which are symmetrically arranged, the positioning portions are positioned on arc surfaces between long shaft end points and short shaft end points of the positioning boss 20, the cross shaft body 10 comprises a body end surface 101, a body side surface 102, a body outer inclined surface 103 and a body inner inclined surface 105, the positioning boss 20 further comprises a positioning side plane 202, the body outer inclined surface 103 is in smooth transition with the body end surface 101 and the body side surface 102, the body outer inclined surface 103 is opposite to the body inner inclined surface 105 in the inclination direction, the inner bottom end of the positioning portion extends to the connection position of the body outer inclined surface 103 and the body end surface 101, and the outer bottom end of the positioning portion extends to the connection position of the body outer inclined surface 103 and the body side surface 102.
The outer inclined plane 103 and the inner inclined plane 105 of the cross shaft body 10 are arranged on the outer inclined plane 103 of the cross shaft body 10, so that on the basis of meeting the working strength of the cross shaft, the effect of light weight of the cross shaft is further achieved, under different working conditions of the cross shaft, for example, under some working conditions, higher requirements are provided for the working strength of the cross shaft, and when the overall size of the cross shaft is required to be not changed, at the moment, the outer inclined plane 103 or the inner inclined plane 105 of the cross shaft body 10 can be set to be a straight plane to improve the strength of the cross shaft, the length of the inner inclined plane 105 of the cross shaft body in the vertical direction can be larger than or equal to the length of the inner inclined plane 105 of the cross shaft body in the vertical direction, on one hand, the weight can be reduced by arranging the outer inclined plane 103 of the cross shaft body 10, so as to achieve the effect of light weight, on the other hand, the outer inclined plane 103 of the cross shaft body 10 can provide more positioning spaces for the positioning bosses 20, that the bottom ends of the inner inclined plane 201 extend to the connecting parts 105 of the inner inclined plane and the body end face 101, the bottom ends of the positioning parts 201 extend to the connecting parts 103 of the outer inclined plane 103 of the cross shaft and the body end face 101, and the positioning bosses 20, so that the positioning blocks are more contact with the positioning blocks 40 in the direction, and the positioning blocks 103, and the positioning blocks 201. As shown in fig. 5-6, the positioning boss 20 may also be circular, and for the case of low requirement for light weight, the time for processing the circular boss is shorter than that for processing the elliptical boss, so that the production efficiency can be improved, and different requirements can be met.
In the embodiment, the oval positioning boss 20 is arranged, the focal point of the long axis of the oval positioning boss is higher than that of the cross body end face 101, so that the cross shaft can realize double-sided positioning, the positioning accuracy in the turning process is ensured, meanwhile, the outer inclined faces 103 of the cross shaft are machined on the upper side and the lower side of the side face of the cross shaft body 10, the weight of the cross shaft is reduced while the strength of the cross shaft is ensured, the light-weight effect is achieved, and the forging is easier.
In some embodiments, the central axis of the locating boss 20 coincides with the central axis of the journal 30; the central axis of the oval or circular positioning boss 20 may also be not coincident with the central axis of the journal 30, for example, the oval or circular positioning boss 20 may be disposed between adjacent journals 30, and the included angle between the adjacent journals 30 is 90 degrees, and to ensure the balance of the cross shaft, the oval or circular positioning boss 20 may be disposed at 45 degrees between the adjacent journals 30. In the present embodiment, the center axis of the positioning boss 20 coincides with the center axis of the journal 30, so that the forging process is convenient and the balance is high.
In some embodiments, the width of the positioning portion 201 is 3-5mm; in the embodiment, the width of the positioning portion 201, that is, the thickness of the positioning boss 20, when the central axis of the positioning boss 20 coincides with the central axis of the journal 30, the positioning boss 20 connects the journal 30 and the cross shaft body 10, and there is a high requirement for the strength thereof, the width of the positioning portion 201 has an important influence on the strength of the positioning boss 20, but the too wide width of the positioning portion 201 also affects the light-weight effect of the cross shaft, and the setting of the width of the positioning portion 201 to 3-5 is based on the application condition of the cross shaft, so that the maximum light-weight effect is realized on the basis of meeting the strength of the cross shaft.
In some embodiments, as shown in fig. 4, both the body end face 101 and the body outer inclined face 103 are planes, and an included angle b between the body end face 101 and the body outer inclined face 103 is 30 to 60 °; the outer inclined plane 103 can also be set as a convex curved surface, in this embodiment, the inclination degree and curvature of the outer inclined plane 103 of the body affect the overall lightweight and positioning effect of the cross shaft, the bottom end of the inner side of the positioning part 201 of the positioning boss 20 can extend to the joint of the outer inclined plane 103 of the body and the body end surface 101 due to the arrangement of the outer inclined plane 103 of the body, and the bottom end of the outer side of the positioning part 201 extends to the joint of the inclined plane 101 of the body and the body end surface 101, so that the structure increases the volume of the positioning part 201 of the positioning boss 20 and the positioning block 40, the cross shaft is more stable in the turning process, and the outer inclined plane 103 of the body is directly and smoothly connected with the body end surface 101 and the body side surface 102, so that more metal materials can be saved, the weight is reduced, but the cross shaft is in a high-strength working environment, the strength of the cross shaft should meet the requirements, the strength of the cross shaft can be ensured by setting the included angle between the body end surface 101 and the outer inclined plane 103 of 30 to 60 degrees, and the lightweight and the positioning effect can be improved.
In some embodiments, as shown in fig. 4, the side surface 102 of the body and the inner slope 105 of the body are both planes, and an included angle a between the side surface 102 of the body and an extension line of the inner slope 105 of the body is 15 to 45 °; the depth of the inner inclined plane 105 of the cross shaft body 10 is not more than 1/3 of the depth of the inner inclined plane 105 of the cross shaft body 10, the inner inclined plane 105 of the cross shaft body can be set to be a convex curved surface, in the embodiment, the inclination degree and the curvature of the outer inclined plane 103 of the cross shaft body influence the overall lightweight effect of the cross shaft, and the inner inclined plane 105 of the cross shaft body is directly connected with the end surface 101 of the cross shaft body in a smooth transition mode relative to the side surface of the center 104 of the cross shaft, so that more metal materials can be omitted, the weight is reduced, but the cross shaft is in a high-strength working environment, the strength of the cross shaft per se meets the requirement, the lightweight effect can be improved by setting the included angle between the end surface 101 of the body and the inner inclined plane 105 of the cross shaft body to be 15 to 45 degrees, and meanwhile, the cross shaft is easy to forge.
In some embodiments, as shown in fig. 7-8, the top end of the positioning boss 20 is provided as a flat or concave surface; in this embodiment, the positioning portion 201 of the elliptical positioning boss 20 is not in complete contact with the inclined surface of the V-shaped groove 401 of the positioning block, the portion above the contact tangent point cannot perform the positioning function, and the portion of the elliptical positioning boss 20 can be completely or partially cut off, so that the positioning function is met, the weight is reduced, the strength meets the working requirement, and the structural shape is beneficial to forging and the service life of the forging die is prolonged.
In some embodiments, the distance from the apex of the locating boss 20 to the body end face 101 is 3-7mm. In this embodiment, the distance from the vertex of the positioning boss 20 to the end surface 101 of the body is too short, so that the positioning effect is not obvious, the distance from the vertex of the positioning boss 20 to the end surface 101 of the body is too long, so that the weight of the cross shaft is increased, the distance from the vertex of the positioning boss 20 to the end surface 101 of the body is 3-7mm, the processing and positioning of the cross shaft can be stable, and the weight is reduced to the maximum.
In some embodiments, as shown in fig. 9, a positioning block 40 is included to be positioned in cooperation with the lightweight universal joint pin of the present invention, the positioning block 40 includes a positioning base, 4V-shaped grooves 401 are distributed on the positioning base, four positioning bosses 20 on the lightweight universal joint pin are positioned in cooperation with the 4V-shaped grooves 401 of the positioning block 40, and as shown in fig. 10, the lightweight universal joint pin is positioned by contacting the positioning portions 201 of the positioning bosses 20 with the V-shaped inclined surfaces on the positioning block 40.
The turning process of the light weight cross shaft convenient for turning and positioning comprises a positioning process and a machining process, and the specific processes are as follows: and (3) positioning: the positioning block 40 and the pressure lever are arranged on the indexing chuck, the lightweight cross axle with the positioning boss 20 is firstly placed on the positioning block 40, the positioning boss 20 on the cross axle corresponds to the V-shaped positioning groove on the positioning block 40, the positioning boss 20 on the cross axle is vertically symmetrical, the positive and negative directions do not need to be distinguished, the positioning is realized by the contact of the positioning part 201 of the positioning boss 20 and the V-shaped inclined plane on the positioning block 40, and the pressure lever descends to press the cross axle tightly; the processing process comprises the following steps: the indexing chuck drives locating piece 40 and the high-speed rotation of depression bar, and then drives the high-speed rotation of cross axle, the processing of one of them axle journal 30 excircle and blind hole is accomplished to the lathe tool, after this axle journal 30 processing is accomplished, the indexing means of indexing chuck drives cross axle automatic rotation 90 degrees, accomplish the processing of next axle journal 30, after the whole processing of four axle journals 30 of cross axle is accomplished, the depression bar rises, cross axle lathe work is finished, take out the cross axle, in whole course of working, the cross axle keeps high-speed rotation always, it is very high to need its clamping positioning accuracy and depression bar and the centre gripping of locating piece 40 to the cross axle are stable.
Based on the same public conception, the embodiment also discloses a universal joint, and the lightweight universal joint comprises the lightweight cross shaft convenient for turning and positioning. The universal joint is a joint part of a universal transmission device of an automobile driving system, is a key part of a universal joint, and generally comprises two universal joint forks, a universal shaft connected with the universal joint forks, a needle bearing, an axial positioning piece of the needle bearing, an oil seal and the like. The spider journal 30 is mounted in a bore of the yoke by mating with a needle bearing. In order to prevent the axial movement of the needle bearing, a bearing axial positioning measure is adopted when the structural scheme is designed. The cross shaft universal joint has the advantages of simple structure and high transmission efficiency, the cross shaft can realize double-sided positioning by arranging the oval positioning boss 20, the focal point of the long shaft of the oval positioning boss is higher than that of the cross shaft body end surface 101, the positioning accuracy in the turning process is ensured, meanwhile, the outer inclined surfaces 103 of the cross shaft body 10 are respectively processed on the upper side and the lower side of the side surface, the strength of the cross shaft is ensured, the weight of the cross shaft is reduced, the lightweight effect is achieved, the arrangement of the outer inclined surfaces 103 of the cross shaft can ensure that the bottom end of the inner side of the positioning part 201 of the positioning boss 20 extends to the connection position of the outer inclined surfaces 103 of the cross shaft body and the end surface 101 of the cross shaft, the bottom end of the outer side of the positioning part 201 extends to the connection position of the inclined surfaces of the cross shaft and the end surface 101 of the cross shaft, the positioning part 201 of the positioning boss 20 and the positioning block 40 is increased in structure, the positioning part 201 area of the cross shaft in the turning process is more stable, the passing rate of the turning process of the cross shaft is improved, finally, the planes of the cross shaft where the cross shaft crossed axes 30 are located are used as reference planes, the inner inclined surfaces 105 are symmetrically arranged in the center 104 of the cross shaft, the weight of the cross shaft is further reduced, the cross shaft is improved, the weight of the cross shaft, the quality of the cross shaft is improved, and the quality of the cross shaft is improved in the quality of the turning process in a comprehensive clamping process, and the quality of the cross shaft is improved.
Based on the same disclosure concept, the embodiment also discloses a method for processing the cross shaft, and S1, a positioning block and a pressure rod are arranged on an indexing chuck; s2, placing the lightweight universal joint pin on the positioning block, and realizing positioning by contacting the positioning part with the V-shaped groove on the positioning block; s3, descending the pressure rod to press the lightweight cross shaft; s4, the index chuck drives the positioning block and the pressure rod to rotate at a high speed, and then the lightweight cross shaft is driven to rotate at a high speed; s5, machining the outer circle and the blind hole of one shaft neck 30 of the light-weight cross shaft by using a turning tool; s6, after the journal 30 is machined, the indexing device of the indexing chuck drives the lightweight cross shaft to automatically rotate by 90 degrees, and the next journal 30 is machined continuously; and S7, after the shaft neck 30 of the lightweight universal joint pin is completely machined, the pressure rod is lifted, and the machining of the lightweight universal joint pin is completed. The lightweight cross shaft is high in positioning accuracy and positioning stability, and machining efficiency and machining quality can be improved.
It is understood that "plurality" in this disclosure means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It will be further understood that the terms "first," "second," and the like, are used to describe various information and should not be limited by these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure.
It will be further understood that the terms "central," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present embodiment and to simplify the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation.
It is further understood that, unless otherwise specified, "connected" includes direct connections between the two without other elements, indirect connections between the two with other elements, and communication connections that have no physical connection but are capable of information or data transfer.
It is further to be understood that while operations are depicted in the drawings in a particular order, this is not to be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (8)
1. A machining method of a light-weight cross shaft is characterized by comprising the following steps:
s1, mounting a positioning block and a pressure rod on an index chuck; s2, placing the lightweight universal joint pin on the positioning block, and realizing positioning by contacting a positioning part with the V-shaped groove on the positioning block; s3, descending the pressure rod to press the lightweight cross shaft; s4, the index chuck drives the positioning block and the pressure rod to rotate at a high speed, and then the lightweight cross shaft is driven to rotate at a high speed; s5, machining the excircle and the blind hole of one shaft neck of the lightweight cross shaft by using a turning tool; s6, after the journal is machined, the indexing device of the indexing chuck drives the lightweight universal joint pin to automatically rotate by 90 degrees, and the next journal is continuously machined; s7, after all shaft necks of the lightweight universal joint pin are machined, the pressure rod rises, and machining of the lightweight universal joint pin is completed;
the lightweight cross includes: the universal joint pin comprises a universal joint pin body, a positioning boss and a shaft neck; the positioning boss is arranged between the cross shaft body and the shaft neck, the positioning boss is oval, the positioning boss comprises positioning parts which are symmetrically arranged, and the positioning parts are cambered surfaces between the long shaft end points and the short shaft end points of the positioning boss; the cross shaft body comprises a body end face, a body side face, an outer body inclined face and an inner body inclined face, the positioning boss further comprises a positioning side plane, the outer body inclined face is in smooth transition with the body end face and the connection position of the body side face, the outer body inclined face is opposite to the inner body inclined face in inclination direction, the bottom end of the inner side of the positioning portion extends to the connection position of the outer body inclined face and the body end face, the bottom end of the outer side of the positioning portion extends to the connection position of the outer body inclined face and the body side face, and the long shaft Jiao Diangao of the positioning boss is located on the body end face.
2. The method of manufacturing a light weight cross shaft according to claim 1, wherein a center axis of the positioning boss coincides with a center axis of the journal.
3. The method of manufacturing a light weight cross according to claim 1, wherein the width of the positioning portion is 3 to 5mm.
4. The method for machining a light-weight cross shaft as claimed in claim 1, wherein the body end face and the body outer inclined face are both flat surfaces, and an included angle between the body end face and the body outer inclined face is 30-60 °.
5. The machining method of the light weight cross shaft as claimed in claim 1, wherein the side face of the body and the inner inclined face of the body are both planes, and an included angle between an extension line of the side face of the body and an extension line of the inner inclined face of the body is 15 to 45 °.
6. The method of machining a light-weight cross as claimed in claim 1, wherein the depth of the inner inclined surface of the main body is not more than 1/3 of the depth of the cross main body.
7. The method of processing a lightweight cross shaft according to claim 1, wherein the tip of the positioning boss is a flat surface or an inner concave surface.
8. The method of manufacturing a light weight cross according to claim 1, wherein a distance from a vertex of the positioning boss to the end surface of the main body is 3 to 7mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211050088.9A CN115126791B (en) | 2022-08-31 | 2022-08-31 | Lightweight cross axle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211050088.9A CN115126791B (en) | 2022-08-31 | 2022-08-31 | Lightweight cross axle |
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| CN115126791A CN115126791A (en) | 2022-09-30 |
| CN115126791B true CN115126791B (en) | 2022-11-18 |
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| CN202211050088.9A Active CN115126791B (en) | 2022-08-31 | 2022-08-31 | Lightweight cross axle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116857272B (en) * | 2023-09-04 | 2023-12-12 | 万向钱潮股份公司 | Dynamic balance cross shaft and processing method thereof |
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| US3788100A (en) * | 1971-02-01 | 1974-01-29 | Nadella | Sealing device for a universal joint |
| CN103659308A (en) * | 2012-09-07 | 2014-03-26 | 万向钱潮股份有限公司 | Processing clamp for differential spider |
| CN216618307U (en) * | 2021-09-27 | 2022-05-27 | 万向钱潮股份有限公司 | High-strength lightweight structure cold extrusion cross axle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4715417B2 (en) * | 2005-09-22 | 2011-07-06 | 株式会社ジェイテクト | Universal joint |
| DE102012111709B3 (en) * | 2012-12-03 | 2013-12-05 | Gelenkwellenwerk Stadtilm GmbH | Spider for a universal joint |
| CN204061603U (en) * | 2014-07-11 | 2014-12-31 | 杭州科友汽车零部件有限公司 | Stealthy oil channel type universal-joint cross trunnion |
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| CN216343527U (en) * | 2021-09-27 | 2022-04-19 | 万向钱潮股份有限公司 | Fatigue-resistant long-life heavy universal joint cross |
| CN114458701B (en) * | 2022-01-19 | 2022-09-06 | 台州品佳汽配有限公司 | High-strength universal joint and processing technology thereof |
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