A spindle fork machining system and method

Abstract

The present application relates to the technical field of machining, in particular to a shaft fork machining system and method. The system comprises a first positioning assembly, a second positioning assembly and a shaft fork. The first positioning assembly comprises a middle positioning unit and a first positioning unit. The middle positioning unit comprises a wedge and two middle positioning portions. The two middle positioning portions are arranged at intervals along a first direction. The mutual approaching sides of the two middle positioning portions gradually decrease in spacing along a second direction. The wedge is slidably connected to the mutual approaching sides of the two middle positioning portions along the second direction. The two second positioning assemblies are arranged on the two sides of the middle positioning unit along a third direction. The first direction, the second direction and the third direction are arranged perpendicularly to each other. The shaft fork comprises a fork body, a shaft body and a fork hole. The shaft body is connected to the two fork bodies at one end along the axial direction of the shaft body. The fork hole penetrates the fork body. Thus, the problem of how to firmly position and clamp the shaft fork is solved.

Description

Technical Field

[0001] This invention relates to the field of machining technology, and more specifically, to a shaft fork machining system and method. Background Technology

[0002] The axle fork includes a fork body, a shaft, and fork holes. One end of the shaft along its axial direction is connected to one of the two fork bodies. The fork holes penetrate the fork bodies. The two fork bodies and shaft are radially spaced apart. The fork holes and shafts can be fitted with suitable components, allowing the axle fork to be used for transmission. During axle fork transmission, external components slide relative to the fork holes, and these external components also slide relative to the adjacent sides of the two fork bodies; therefore, the adjacent sides of the two fork bodies require precision machining. Simultaneously, the outer circumferential surface of the shaft also needs to mate with other external components during operation; therefore, the outer circumferential surface of the shaft also requires precision machining.

[0003] Currently, the two adjacent sides of the shaft forks are typically precision machined, and these adjacent sides are used as the machining reference surface for the outer circumference of the shaft body. If the force exerted between the positioning fixture and the machining reference surface is too large, it can easily damage the precision-machined surface of the shaft fork; if the force exerted between the positioning fixture and the machining reference surface is too small, the shaft fork and the positioning fixture may move relative to each other during machining, causing the machining component to be machined outside the target area on the shaft fork. Summary of the Invention

[0004] To address the problem of how to securely position and clamp the shaft fork, this invention provides a shaft fork machining system and method.

[0005] In a first aspect, the present invention provides a shaft fork machining system, comprising:

[0006] The first positioning component includes a center positioning unit and a first positioning unit; the center positioning unit includes a wedge and a center positioning part; two center positioning parts are spaced apart along a first direction; the distance between the adjacent sides of the two center positioning parts in the first direction gradually decreases along a second direction; the wedge and the adjacent sides of the two center positioning parts are slidably connected along the second direction.

[0007] The second positioning component comprises two second positioning components arranged on both sides of the central positioning unit along a third direction; wherein the first direction, the second direction, and the third direction are arranged perpendicular to each other;

[0008] A fork includes a fork body, a shaft, and a fork hole; one end of the shaft along its own axial direction is connected to two fork bodies respectively; the fork hole passes through the fork body;

[0009] The positioning and clamping state includes one fork body, one central positioning part, another central positioning part, and another fork body arranged sequentially along the first direction. The wedge block abuts against the central positioning part and moves along the second direction so that the mutually distant sides of the two central positioning parts abut against the mutually close sides of the two fork bodies. Part of the first positioning unit passes through and abuts against the fork hole sequentially along the first direction. The two second positioning components move closer to each other along the third direction and simultaneously apply a force along the third direction to the shaft fork.

[0010] Optionally, the central positioning portion abuts against a designated area on the mutually adjacent sides of the two forks; wherein the designated area includes the area from the central axis of the fork hole to the region near one end of the fork on the mutually adjacent sides of the two forks.

[0011] Optionally, the first positioning unit includes a positioning rod and a first positioning seat; the first positioning seat, one of the middle positioning parts, and another of the middle positioning parts are arranged at intervals along the first direction.

[0012] The positioning and clamping state also includes the positioning rod being connected to the first positioning seat, with the outer peripheral surface of the positioning rod abutting against the fork hole.

[0013] Optionally, the positioning unit further includes a wedge groove; the wedge block is recessed along the second direction to form the wedge groove; the wedge groove penetrates the wedge block along the first direction;

[0014] The positioning and clamping state also includes the outer peripheral surface of the positioning rod abutting against the wedge groove.

[0015] Optionally, the clearance between the wedge groove and the positioning rod is smaller than the clearance between the middle positioning part and the positioning rod.

[0016] Optionally, the first positioning seat includes an outer seat and an outer hole; the outer hole extends through the outer seat along the first direction;

[0017] The positioning and clamping state includes the outer seat, one fork body, one middle positioning part, another middle positioning part, and another fork body arranged sequentially along the first direction. The wedge block abuts against the middle positioning part and moves along the second direction so that the mutually distant sides of the two middle positioning parts abut against the mutually close sides of the two fork bodies. The positioning rod passes through and abuts against the outer hole, one fork hole, the wedge groove, and the other fork hole in sequence. The two second positioning components move closer to each other along the second direction while applying a force to the shaft fork.

[0018] Optionally, the positioning rod includes a side rod and a center rod; one side rod, the center rod, and the other side rod are coaxially connected in sequence; the maximum distance between the outer circumferential surface of the center rod and the central axis of the side rod along the radial direction of the side rod is R2; the minimum distance between the outer circumferential surface of the center rod and the central axis of the side rod along the radial direction of the side rod is R1; the difference between R2 and R1 is greater than or equal to a set value; the difference between any two of the radius of the side rod, R2, the radius of the fork hole, and the radius of the outer hole is within a first range;

[0019] The positioning and clamping state includes the outer seat, one fork, one middle positioning part, another middle positioning part, and another fork arranged sequentially along the first direction. The wedge block abuts against the middle positioning part and moves along the second direction so that the mutually distant sides of the two middle positioning parts abut against the mutually close sides of the two forks. The positioning rod passes through the outer hole, one fork hole, the wedge groove, and another fork hole in sequence in the second state to the third state. The side rod rotates around its own axis to the fourth state. The two second positioning components move closer to each other along the second direction and apply a force to the shaft fork. The second state includes the middle rod and the wedge groove being spaced apart. The third state includes the side rod abutting against the outer hole and the fork hole respectively. The fourth state includes the outer peripheral surface of the middle rod abutting against the wedge groove.

[0020] Optionally, the positioning unit further includes a sleeve; the outer peripheral surface of the sleeve abuts against the wedge groove;

[0021] The first positioning seat further includes an inner seat and an inner hole; the inner seat is detachably connected to the outer hole; the inner hole extends through the inner seat along the first direction; the difference between any two of the outer diameter of the positioning rod, the inner diameter of the inner hole, the inner diameter of the fork hole, and the inner diameter of the sleeve is within a second range.

[0022] The positioning and clamping state includes the outer seat, one fork body, one middle positioning part, another middle positioning part, and another fork body arranged sequentially along the first direction. The wedge block abuts against the middle positioning part and moves along the second direction so that the mutually distant sides of the two middle positioning parts abut against the mutually close sides of the two fork bodies. The positioning rod passes sequentially through the inner hole, one fork hole, the inner peripheral wall of the sleeve, and the other fork hole to the first state. The two second positioning components move closer to each other along the second direction and simultaneously apply a force to the shaft fork. In the first state, the positioning rod abuts against the inner hole and the fork hole respectively, the inner peripheral surface of the sleeve abuts against the outer peripheral surface of the positioning rod, and the positioning rod abuts against the wedge groove through the sleeve.

[0023] Optionally, the shaft fork machining system further includes a rotating assembly and a machining assembly; one side of the rotating assembly is connected to the intermediate positioning unit, the first positioning unit, and the second positioning assembly, respectively.

[0024] The positioning and clamping state also includes the central axis of the shaft coinciding with the set axis, the rotating component rotating around the set axis, and the machining component machining the outer peripheral surface of the shaft fork.

[0025] In a second aspect, the present invention provides a method for machining a shaft fork, the method being applied to any of the shaft fork machining systems described in the first aspect, the method comprising:

[0026] The fork body of the shaft fork is moved to one of the fork bodies, one of the central positioning parts, another of the central positioning parts, and another of the fork bodies are arranged sequentially along the first direction;

[0027] The wedge moves along the second direction to abut against the mutually adjacent sides of the two central positioning parts at their respective distances;

[0028] The first positioning unit moves sequentially through the fork hole that abuts the shaft fork;

[0029] The two second positioning components move closer to each other along a third direction while applying a force to the axle fork.

[0030] Optionally, the first positioning unit includes a positioning rod and a first positioning seat; the first positioning seat, one of the middle positioning parts, and another of the middle positioning parts are arranged sequentially at intervals along the first direction; the first positioning seat includes an outer seat and an outer hole; the outer hole penetrates the outer seat along the first direction; the middle positioning unit further includes a wedge groove; the wedge block is recessed along the second direction to form the wedge groove; the wedge groove penetrates the wedge block along the first direction; the positioning rod includes a side rod and a middle rod; one of the side rods, the middle rod, and the other side rod are coaxially connected sequentially; the maximum distance between the outer peripheral surface of the middle rod and the central axis of the side rod along the radial direction of the side rod is R2; the minimum distance between the outer peripheral surface of the middle rod and the central axis of the side rod along the radial direction of the side rod is R1; the difference between R2 and R1 is greater than or equal to a set value; the difference between any two of the radius of the side rod, R2, the radius of the fork hole, and the radius of the outer hole is within a first range;

[0031] The first positioning unit moves sequentially through the fork hole that abuts the shaft fork, including:

[0032] The positioning rod of the first positioning unit passes through and abuts the outer hole, one of the fork holes, the wedge groove, and another fork hole in sequence in the second state to the third state; wherein, the second state includes the middle rod being spaced apart from the wedge groove, and the third state includes the side rods abutting the outer hole and the fork holes respectively;

[0033] The side rod rotates around its own axis to a fourth state; wherein, the fourth state includes the outer circumferential surface of the middle rod abutting the wedge groove.

[0034] To solve the problem of how to securely position and clamp the axle fork, the present invention has the following advantages:

[0035] The first positioning assembly includes two intermediate positioning parts spaced apart along a first direction. The distance between the adjacent sides of the two intermediate positioning parts gradually decreases along a second direction from the first direction. Simultaneously, a wedge is slidably connected to the adjacent sides of the two intermediate positioning parts along the second direction. When the wedge abuts against the intermediate positioning parts and moves along the second direction, the distancing sides of the two intermediate positioning parts abut against the adjacent sides of the two forks, thereby providing tension positioning of the forks along the first direction and preventing damage to the machining reference surface of the forks by the intermediate positioning parts. By having a portion of the first positioning unit sequentially pass through and abut against the fork holes along the first direction, the shaft fork can be positioned radially along the fork holes, preventing damage to the fork holes by the first positioning units. By having two second positioning components positioned on either side of the central positioning unit along a third direction move closer to each other along the third direction and simultaneously apply a force along the third direction to the shaft fork, the relative displacement between the shaft fork and the central positioning part, and between the shaft fork and the first positioning unit, can be limited. This allows the machining component to accurately machine the target machining area on the outer circumferential surface of the shaft, ultimately solving the problems in the prior art where excessive positioning fixture resistance force easily damages the precision machining surface of the shaft fork, and insufficient resistance force easily leads to relative displacement of the shaft fork and machining position deviation. Attached Figure Description

[0036] Figure 1 A schematic diagram of a shaft fork machining system according to one embodiment is shown;

[0037] Figure 2 A partial schematic diagram of a shaft fork machining system according to one embodiment is shown;

[0038] Figure 3 A schematic diagram of a first positioning component and axle fork according to one embodiment is shown;

[0039] Figure 4 A schematic diagram of a first positioning component and a second positioning component according to one embodiment is shown;

[0040] Figure 5 A partial schematic diagram of a first positioning component according to one embodiment is shown;

[0041] Figure 6 A partial first-view cross-sectional schematic diagram of a first positioning component according to an embodiment is shown;

[0042] Figure 7 A partial second-view cross-sectional schematic diagram of a first positioning component according to an embodiment is shown;

[0043] Figure 8 A schematic diagram of a first positioning component and a second positioning component according to another embodiment is shown;

[0044] Figure 9 A partial schematic diagram of the first positioning component according to another embodiment is shown;

[0045] Figure 10 A partial first-view cross-sectional schematic diagram of the first positioning component according to another embodiment is shown;

[0046] Figure 11 A partial second-view cross-sectional schematic diagram of the first positioning component according to another embodiment is shown;

[0047] Figure 12 A schematic diagram of a shaft fork machining method according to one embodiment is shown.

[0048] Reference numerals: 10 First positioning assembly; 11 Middle positioning unit; 111 Wedge block; 112 Wedge groove; 113 Middle positioning part; 114 Deformation groove; 115 Connecting part; 116 Sleeve; 12 First positioning unit; 121 Positioning rod; 1211 Side rod; 1212 Middle rod; 122 First positioning seat; 1221 Outer seat; 1222 Inner seat; 1223 Outer hole; 1224 Inner hole; 20 Second positioning assembly; 21 Second positioning seat; 22 Abutting part; 30 Rotating assembly; 40 Machining assembly; 50 Shaft fork; 51 Fork body; 52 Shaft body. Detailed Implementation

[0049] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled 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 disclosure.

[0050] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments and are not intended to limit the indicated devices, elements, or components to having a specific orientation or being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientations or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances. In addition, the terms "installed", "set up", "equipped with", "connected", and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are mainly used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0051] In the machining process of the shaft fork 50, the two adjacent sides of the two shaft forks 50 are usually finished first, and then these two adjacent sides are used as the machining reference surface for the outer peripheral surface of the shaft body 52 for positioning machining. This positioning method has a technical problem that it is difficult to balance positioning stability and protection of the finished surface. If the contact force between the positioning fixture and the aforementioned machining reference surface is too large, it is easy to damage the finished surface of the shaft fork 50; if the contact force between the positioning fixture and the aforementioned machining reference surface is too small, relative displacement may occur between the shaft fork 50 and the positioning fixture during subsequent machining, which will cause the machining component 40 to act outside the target machining area on the shaft fork 50, and the accuracy and consistency of the shaft fork 50 machining process cannot be guaranteed.

[0052] Example 1:

[0053] This embodiment discloses a machining system for a shaft fork 50, such as Figure 1 , Figure 2 As shown, the shaft fork 50 machining system includes a first positioning component 10, a second positioning component 20, and a shaft fork 50; the shaft fork 50 can be applied to universal joint couplings;

[0054] The first positioning component 10 includes a middle positioning unit 11 and a first positioning unit 12; the middle positioning unit 11 includes a wedge block 111 and a middle positioning part 113; two middle positioning parts 113 are spaced apart along a first direction; the distance between the adjacent sides of the two middle positioning parts 113 in the first direction gradually decreases along a second direction; the wedge block 111 and the adjacent sides of the two middle positioning parts 113 are slidably connected along the second direction; the first direction can be as follows: Figure 3 The left and right directions shown can be followed by the second direction, which can be as follows: Figure 3 As shown in the top-to-bottom direction. When the wedge 111 abuts against the mutually close sides of the two center positioning parts 113 and moves along the second direction, a force can be applied to the center positioning parts 113 in a direction away from each other.

[0055] Two second positioning components 20 are arranged on both sides of the central positioning unit 11 along a third direction; wherein any two of the first direction, the second direction, and the third direction are arranged perpendicular to each other;

[0056] The shaft fork 50 includes a fork body 51, a shaft body 52, and a fork hole; one end of the shaft body 52 along its own axial direction is connected to two fork bodies 51 respectively; the fork hole passes through the fork body 51; after the shaft fork 50 is processed, the shaft body 52, the insertion hole, and the adjacent sides of the two fork bodies 51 can be assembled with external components.

[0057] The positioning and clamping state includes one fork 51, one middle positioning part 113, another middle positioning part 113, and another fork 51 arranged sequentially along a first direction. The wedge block 111 abuts against the middle positioning part 113 and moves along a second direction so that the mutually distant sides of the two middle positioning parts 113 abut against the mutually close sides of the two fork 51. The mutually close sides of the two fork 51 are the machining reference surfaces, allowing the middle positioning part 113 to tighten the adjacent fork 51, thereby completing the positioning of the fork 51 along the first direction and avoiding damage to the fork 51 by the middle positioning part 113. Part of the first positioning unit 12 passes through and abuts against the fork hole along the first direction. The fork hole is the machining reference surface. The first positioning unit 12 can position the shaft fork 50 radially along the insertion hole and avoid damage to the fork hole by the first positioning unit 12. The two second positioning components 20 move closer to each other along a third direction so that the two second positioning components 20 can simultaneously clamp the two sides of the fork 51 along the third direction, thereby applying a force along the third direction to the shaft fork 50. The machining component 40 can machine the outer peripheral surface of the shaft 52 in the positioning and clamping state. The second positioning component 20 can limit the relative displacement between the shaft fork 50 and the middle positioning part 113 and the relative displacement between the shaft fork 50 and the first positioning unit 12, so that the machining component 40 can accurately machine the target machining area on the outer peripheral surface of the shaft 52, while avoiding damage to the machining reference surface.

[0058] Furthermore, the surface roughness of the adjacent sides of the two forks 51 and the surface roughness of the inner peripheral wall of the fork hole can be less than the surface roughness of other outer surfaces of the shaft fork 50, thereby allowing the adjacent sides of the two forks 51 and the inner peripheral wall of the fork hole to form a high-precision machining reference surface, ensuring that the machining assembly 40 can stably machine the target machining area on the shaft 52. The force between the fork 51 and the middle positioning part 113 and the force between the positioning rod 121 and the fork hole can be less than the force between the second positioning assembly 20 and the shaft fork 50, thereby further ensuring stable positioning while preventing damage to the positioning reference surface.

[0059] Furthermore, such as Figure 5 As shown, the center positioning unit 11 may further include a deformation groove 114 and a connecting portion 115; the connecting portion 115 can connect the bottom ends of the two center positioning portions 113 respectively, which can improve the strength of the center positioning unit 11. The mutually distant sides of the two center positioning portions 113 can be recessed towards the mutually approaching sides to form the deformation groove 114. The deformation groove 114 can be provided on the side of the center positioning portion 113 near the connecting portion 115, so that the center positioning portion 113 can be driven to move to the abutting fork body 51 with a smaller driving force for the wedge block 111 to move in the second direction. Figure 4As shown, the second positioning component 20 may include a second positioning seat 21, an abutment portion 22, and a third driving portion; one second positioning seat 21, a middle positioning unit 11, and another second positioning seat 21 may be arranged sequentially along a third direction; the third driving portion may be drivenly connected to the second positioning seat 21; the second positioning seat 21 is connected to the abutment portion 22; the abutment portion 22 is located on the side of the second positioning seat 21 near the middle positioning portion 113, and several protrusions may be provided on the side of the abutment portion 22 near the middle positioning portion 113; in the positioning and clamping state, the third driving portion may drive the second positioning seat 21, so that the abutment portions 22 on both sides of the middle positioning unit 11 move simultaneously in a mutually approaching direction to both sides of the clamping fork 51 along a third direction, and the protrusions of the abutment portion 22 can more stably clamp the position with higher surface roughness on the upper surface of the fork 51. The first positioning unit 12 may also include a second driving portion, which may be drivenly connected to the positioning rod 121, so that the second driving portion drives the positioning rod 121 to move. The positioning unit 11 may further include a first driving unit, which can be drivenly connected to the wedge block 111 to provide power for the wedge block 111 to move in the second direction, or to provide power for the wedge block 111 to move in the opposite direction of the second direction; the first driving unit may be a bolt, hydraulic cylinder, pneumatic cylinder, motor structure, etc. Figure 7 As shown, the first driving part can preferably be a bolt. A threaded hole is coaxially provided on the wedge 111 and the connecting part 115. The bolt is placed in the threaded hole and simultaneously abuts against the wedge 111 and the connecting part 115. By rotating the bolt, the wedge 111 can be moved down to tighten the middle positioning part 113 and the wedge 111 can be moved up to loosen the middle positioning part 113. This method has a simple structure, occupies little space, is lightweight, and can prevent the wedge 111 from falling off.

[0060] Furthermore, such as Figure 3 As shown, the center positioning part 113 abuts against a set area on the mutually adjacent sides of the two forks 51; wherein, the set area includes the area between the central axis of the fork hole and the end of the mutually adjacent side of the two forks 51 near the shaft 52; since the processing component 40 processes the outer peripheral surface of the shaft 52, the distance between the set area and the position where the processing component 40 abuts against the shaft 52 is close, according to the lever principle, this prevents the processing component 40 from easily pushing the shaft fork 50 to move the fork 51 radially. At the same time, the distance between the end of the center positioning part 113 abutting against the fork 51 and the bottom end of the center positioning part 113 is far, according to the lever principle, so that the wedge block 111 can drive the center positioning part 113 to abut against the fork 51 with less force.

[0061] Furthermore, such as Figure 1 , Figure 2 , Figure 3 As shown, the first positioning unit 12 includes a positioning rod 121 and a first positioning seat 122; the first positioning seat 122, a middle positioning part 113, and another middle positioning part 113 are arranged sequentially at intervals along the first direction;

[0062] The positioning and clamping state also includes the connection between the positioning rod 121 and the first positioning seat 122, with the outer peripheral surface of the positioning rod 121 abutting against the fork hole; in this way, the first positioning seat 122 can fix the position of the positioning rod 121 along its own axial direction, so that the positioning rod 121 can position the fork hole more accurately.

[0063] Furthermore, such as Figure 5 , Figure 6 , Figure 7 As shown, the positioning unit 11 also includes a wedge groove 112; the wedge block 111 is recessed along the second direction to form the wedge groove 112; the wedge groove 112 penetrates the wedge block 111 along the first direction;

[0064] The positioning and clamping state also includes the outer peripheral surface of the positioning rod 121 abutting against the wedge groove 112. The positioning rod 121 abutting against the wedge groove 112 can reduce the vibration of the wedge block 111, while the wedge block 111 abutting against the middle positioning block can reduce the vibration of the middle positioning part 113. The middle positioning part 113 abutting against the fork body 51, ultimately reducing the vibration of the shaft body 52 during the machining process.

[0065] Furthermore, the fit clearance between the wedge groove 112 and the positioning rod 121 is smaller than the fit clearance between the middle positioning part 113 and the positioning rod 121. After the fork body 51 is placed on both sides of the middle positioning part 113, the positioning rod 121 is passed through one fork hole, the wedge groove 112, and the other fork hole in sequence, so that the positioning rod 121 is positioned for the fork hole. In this process, the fit clearance between the wedge groove 112 and the positioning rod 121 is smaller than the fit clearance between the middle positioning part 113 and the positioning rod 121, which can reduce the resistance to the movement of the positioning rod 121, thereby improving the positioning efficiency and reducing the wear of the positioning rod 121.

[0066] Furthermore, such as Figure 8 As shown, the first positioning seat 122 includes an outer seat 1221 and an outer hole 1223; the outer hole 1223 penetrates the outer seat 1221 along a first direction;

[0067] The positioning and clamping state includes an outer seat 1221, a fork 51, a middle positioning part 113, another middle positioning part 113, and another fork 51 arranged sequentially along a first direction. A wedge block 111 abuts against the middle positioning part 113 and moves along a second direction, causing the mutually distant sides of the two middle positioning parts 113 to abut against the mutually close sides of the two fork 51. A positioning rod 121 passes through and abuts against an outer hole 1223, a fork hole, a wedge groove 112, and another fork hole in sequence. Two second positioning components 20 move closer to each other along the second direction while simultaneously applying force to the shaft fork 50. This arrangement allows the outer hole 1223 to fix the positioning rod 121 in its radial direction, and the outer seat 1221 to support the positioning rod 121, thereby achieving positioning of the fork hole.

[0068] Furthermore, such as Figure 5 , Figure 6 , Figure 7 As shown, the positioning rod 121 includes a side rod 1211 and a middle rod 1212; one side rod 1211, the middle rod 1212, and the other side rod 1211 are coaxially connected in sequence; the maximum distance between the outer peripheral surface of the middle rod 1212 and the central axis of the side rod 1211 along the radial direction of the side rod 1211 is R2; the minimum distance between the outer peripheral surface of the middle rod 1212 and the central axis of the side rod 1211 along the radial direction of the side rod 1211 is R1; the difference between R2 and R1 is greater than or equal to a set value, and the middle rod 1212... The cross-section of 212 is not a perfect circle; the cross-section of the middle rod 1212 is preferably elliptical. The difference between any two of the radius of the side rod 1211, R2, the radius of the fork hole, and the radius of the outer hole 1223 is within a first range, which can be 0~1mm. This makes the radius of the side rod 1211, R2, the radius of the fork hole, and the radius of the outer hole 1223 as equal as possible, so that the positioning rod 121 can simultaneously abut against the fork hole and the wedge groove 112, thereby achieving stable positioning of the fork hole.

[0069] The positioning and clamping state includes an outer seat 1221, a fork 51, a middle positioning part 113, another middle positioning part 113, and another fork 51 arranged sequentially along a first direction. A wedge block 111 abuts against the middle positioning part 113 and moves along a second direction, causing the mutually distant sides of the two middle positioning parts 113 to abut against the mutually close sides of the two fork 51. The positioning rod 121, in a second state, sequentially passes through the outer hole 1223, a fork hole, a wedge groove 112, and another fork hole to a third state. The side rod 121 rotates around its own axis. Moving to the fourth state, the two second positioning components 20 move closer to each other along the second direction until they simultaneously apply force to the shaft fork 50. The second state includes the center rod 1212 and the wedge groove 112 being spaced apart; the third state includes the side rods 1211 abutting against the outer hole 1223 and the fork hole respectively; and the fourth state includes the outer circumferential surface of the center rod 1212 abutting against the wedge groove 112. Moving to the third state with the center rod 1212 spaced apart from the wedge groove 112 reduces resistance and wear during the movement of the center rod 1212. After moving to the fourth state, the center rod 1212 abuts against the wedge groove 112, which reduces the vibration of the wedge block 111. The wedge block 111 abutting against the central positioning block reduces the vibration of the central positioning part 113, which in turn abuts against the fork body 51, ultimately reducing the vibration of the shaft body 52 during machining.

[0070] Furthermore, such as Figure 8 , Figure 9 , Figure 10 As shown, the positioning unit 11 also includes a sleeve 116; the outer circumferential surface of the sleeve 116 abuts against the wedge groove 112;

[0071] The first positioning seat 122 also includes an inner seat 1222 and an inner hole 1224; the inner seat 1222 is detachably connected to the outer hole 1223; the inner hole 1224 penetrates the inner seat 1222 along a first direction; as shown Figure 11 As shown, the difference between any two of the outer diameter of the positioning rod 121, the inner diameter of the inner hole 1224, the inner diameter of the fork hole, and the inner diameter of the sleeve 116 is within a second range, which can be 0~1mm. This makes the outer diameter of the positioning rod 121, the inner diameter of the inner hole 1224, the inner diameter of the fork hole, and the inner diameter of the sleeve 116 as equal as possible, so that the positioning rod 121 can simultaneously abut against the inner hole 1224, the fork hole, and the inner peripheral wall of the sleeve 116, thereby achieving stable positioning of the fork hole.

[0072] The positioning and clamping state includes an outer seat 1221, a fork 51, a middle positioning part 113, another middle positioning part 113, and another fork 51 arranged sequentially along a first direction. A wedge block 111 abuts against the middle positioning part 113 and moves along a second direction, causing the mutually distant sides of the two middle positioning parts 113 to abut against the mutually close sides of the two fork 51s. The positioning rod 121 passes sequentially through the inner hole 1224, a fork hole, the inner peripheral wall of the sleeve 116, and the other fork hole to the first state. Two second positioning components 20 move closer to each other along the second direction while simultaneously applying force to the shaft fork 50. In the first state, the positioning rod 121 abuts against the inner hole 1224 and the fork hole respectively, and the inner circumferential surface of the sleeve 116 abuts against the outer circumferential surface of the positioning rod 121. This can be achieved by the entire inner circumferential surface of the sleeve 116 abutting against the outer circumferential surface of the positioning rod 121. The positioning rod 121 abuts against the wedge groove 112 through the sleeve 116. The outer diameter of the positioning rod 121 needs to correspond to the diameter of the fork hole. If the diameter of the fork hole is small, the outer diameter of the positioning rod 121 is also small. In this case, the positioning rod 121 with a smaller outer diameter cannot abut against the wedge groove 112 in the positioning and clamping state. Therefore, it can indirectly abut against the wedge groove 112 through the sleeve 116. Furthermore, the diameter of the inner hole 1224 can be adaptively adjusted according to the outer diameter of the positioning rod 121 without changing the outer seat 1221, which can improve the efficiency of positioning and clamping. The middle rod 1212, sleeve 116, wedge groove 112, wedge block 111, middle positioning part 113, and fork 51 abut against each other in sequence, ultimately reducing the vibration of the shaft 52 during the machining process.

[0073] Furthermore, such as Figure 1 As shown, the shaft fork 50 machining system also includes a rotating assembly 30 and a machining assembly 40; one side of the rotating assembly 30 is connected to the central positioning unit 11, the first positioning unit 12, and the second positioning assembly 20 respectively.

[0074] The positioning and clamping state also includes the central axis of the shaft 52 coinciding with the set axis, the rotating component 30 rotating around the set axis, and the machining component 40 machining the outer peripheral surface of the shaft 52 of the shaft fork 50. This allows the machining component 40 to machine the outer peripheral surface of the rotating shaft 52 using the adjacent sides of the two forks 51 and the fork holes as machining reference surfaces. The machining can be additive manufacturing or subtractive manufacturing; this method is more effective in subtractive manufacturing.

[0075] Example 2:

[0076] This embodiment provides a method for machining a shaft fork 50. This method is applied to any of the shaft fork 50 machining systems described in the above embodiments, such as... Figure 12 As shown, the machining method of the shaft fork 50 may include steps S11 to S14, and each step will be described in detail below.

[0077] In step S11, the fork body 51 of the shaft fork 50 is moved to a position where one fork body 51, one center positioning part 113, another center positioning part 113, and another fork body 51 are arranged sequentially along the first direction, which facilitates the two center positioning parts 113 to tighten the relatively close side of the fork body 51.

[0078] In step S12, the wedge block 111 moves along the second direction to abut against the mutually close sides of the two center positioning parts 113 on their far-away sides, so that the wedge block 111 drives the center positioning parts 113 to move to a stable position for the fork 51 along the first direction.

[0079] Step S13: The first positioning unit 12 moves and passes through the fork hole of the abutting shaft fork 50 in sequence, so that the first positioning unit 12 can position the fork hole in its own radial direction.

[0080] In step S14, the two second positioning components 20 move closer to each other along a third direction while applying force to the shaft fork 50. The sides of the two fork bodies 51 that are close to each other are the machining reference surfaces, and the fork holes are the machining reference surfaces, thereby allowing the two second positioning components 20 to fix the relative positions of the shaft fork 50 with the middle positioning part 113 and the first positioning unit 12, respectively. The middle positioning part 113 and the first positioning unit 12 are only for abutment positioning, while the second positioning components 20 mainly apply clamping force to the shaft fork 50, thereby achieving stable clamping of the shaft fork 50 while avoiding damage to the machining reference surfaces.

[0081] Furthermore, such as Figure 7As shown, the first positioning unit 12 includes a positioning rod 121 and a first positioning seat 122; the first positioning seat 122, a middle positioning part 113, and another middle positioning part 113 are arranged sequentially at intervals along a first direction; the first positioning seat 122 includes an outer seat 1221 and an outer hole 1223; the outer hole 1223 penetrates the outer seat 1221 along the first direction; the middle positioning unit 11 also includes a wedge groove 112; the wedge block 111 is recessed along a second direction to form the wedge groove 112; the wedge groove 112 penetrates the wedge block 111 along the first direction; the positioning rod 121 includes a side rod 1211 and a middle rod 1212; one side rod 1211, the middle rod 1212, and the other side rod 1211 are coaxially connected sequentially; the outer peripheral surface of the middle rod 1212 is connected to the side rod 1211. The maximum distance between the central axis of the middle rod 1212 and the central axis of the side rod 1211 along the radial direction is R2; the minimum distance between the outer circumferential surface of the middle rod 1212 and the central axis of the side rod 1211 along the radial direction is R1; the difference between R2 and R1 is greater than or equal to a set value, and the cross-section of the middle rod 1212 is not a perfect circle, but preferably an ellipse; the difference between any two of the radius of the side rod 1211, R2, the radius of the fork hole, and the radius of the outer hole 1223 is within a first range, which can be 0~1mm, so that the radius of the side rod 1211, R2, the radius of the fork hole, and the radius of the outer hole 1223 are as equal as possible, so that the positioning rod 121 can simultaneously abut against the fork hole and the wedge groove 112, thereby achieving stable positioning of the fork hole;

[0082] Step S13 includes steps S131 and S132; each step will be described in detail below; steps S11, S12, S131, S132, and S14 are executed sequentially:

[0083] In step S131, the positioning rod 121 of the first positioning unit 12 passes through the outer hole 1223, a fork hole, a wedge groove 112, and another fork hole in sequence in the second state to the third state; wherein, the second state includes the middle rod 1212 and the wedge groove 112 being spaced apart, and the third state includes the side rods 1211 abutting against the outer hole 1223 and the fork hole respectively;

[0084] In step S132, the side rod 1211 rotates around its own axis to the fourth state; wherein, the fourth state includes the outer peripheral surface of the middle rod 1212 abutting against the wedge groove 112; the middle rod 1212 moves to the third state with the wedge groove 112 spaced apart, which can reduce the resistance and wear of the middle rod 1212 during the movement process. After the middle rod 1212 moves to the fourth state and abuts against the wedge groove 112, the middle rod 1212 abutting against the wedge groove 112 can reduce the vibration of the wedge block 111, and the wedge block 111 abutting against the middle positioning block can reduce the vibration of the middle positioning part 113, and the middle positioning part 113 abutting against the fork body 51, ultimately reducing the vibration of the shaft body 52 during the processing.

[0085] Those skilled in the art will understand that the above embodiments are specific examples of implementing this disclosure, and in practical applications, various changes can be made in form and detail without departing from the scope of this disclosure.

Claims

1. A shaft fork machining system, characterized in that, The shaft fork machining system includes: The first positioning component includes a center positioning unit and a first positioning unit; the center positioning unit includes a wedge and a center positioning part; two center positioning parts are spaced apart along a first direction; the distance between the adjacent sides of the two center positioning parts in the first direction gradually decreases along a second direction; the wedge and the adjacent sides of the two center positioning parts are slidably connected along the second direction. The second positioning component comprises two second positioning components arranged on both sides of the central positioning unit along a third direction; wherein the first direction, the second direction, and the third direction are arranged perpendicular to each other; A fork includes a fork body, a shaft, and a fork hole; one end of the shaft along its own axial direction is connected to two fork bodies respectively; the fork hole passes through the fork body; The positioning and clamping state includes one fork body, one central positioning part, another central positioning part, and another fork body arranged sequentially along the first direction. The wedge block abuts against the central positioning part and moves along the second direction so that the mutually distant sides of the two central positioning parts abut against the mutually close sides of the two fork bodies. Part of the first positioning unit passes through and abuts against the fork hole sequentially along the first direction. The two second positioning components move closer to each other along the third direction and simultaneously apply a force along the third direction to the shaft fork.

2. The shaft fork machining system according to claim 1, characterized in that, The positioning part abuts against a set area on the mutually adjacent sides of the two forks; wherein, the set area includes the area from the central axis of the fork hole to the region on the mutually adjacent sides of the two forks near one end of the axis.

3. The shaft fork machining system according to claim 1, characterized in that, The first positioning unit includes a positioning rod and a first positioning seat; the first positioning seat, one of the middle positioning parts, and another of the middle positioning parts are arranged at intervals along the first direction. The positioning and clamping state also includes the positioning rod being connected to the first positioning seat, with the outer peripheral surface of the positioning rod abutting against the fork hole.

4. The shaft fork machining system according to claim 3, characterized in that, The positioning unit further includes a wedge groove; the wedge block is recessed along the second direction to form the wedge groove; the wedge groove penetrates the wedge block along the first direction; The positioning and clamping state also includes the outer peripheral surface of the positioning rod abutting against the wedge groove.

5. The shaft fork machining system according to claim 4, characterized in that, The clearance between the wedge groove and the positioning rod is smaller than the clearance between the middle positioning part and the positioning rod.

6. The shaft fork machining system according to claim 4, characterized in that, The first positioning seat includes an outer seat and an outer hole; the outer hole extends through the outer seat along the first direction; The positioning and clamping state includes the outer seat, one fork body, one middle positioning part, another middle positioning part, and another fork body arranged sequentially along the first direction. The wedge block abuts against the middle positioning part and moves along the second direction so that the mutually distant sides of the two middle positioning parts abut against the mutually close sides of the two fork bodies. The positioning rod passes through and abuts against the outer hole, one fork hole, the wedge groove, and the other fork hole in sequence. The two second positioning components move closer to each other along the second direction while applying a force to the shaft fork.

7. The shaft fork machining system according to claim 6, characterized in that, The positioning rod includes a side rod and a center rod; one side rod, the center rod, and the other side rod are coaxially connected in sequence; the maximum distance between the outer circumferential surface of the center rod and the central axis of the side rod along the radial direction of the side rod is R2; the minimum distance between the outer circumferential surface of the center rod and the central axis of the side rod along the radial direction of the side rod is R1; the difference between R2 and R1 is greater than or equal to a set value; the difference between any two of the radius of the side rod, R2, the radius of the fork hole, and the radius of the outer hole is within a first range; The positioning and clamping state includes the outer seat, one fork, one middle positioning part, another middle positioning part, and another fork arranged sequentially along the first direction. The wedge block abuts against the middle positioning part and moves along the second direction so that the mutually distant sides of the two middle positioning parts abut against the mutually close sides of the two forks. The positioning rod passes through the outer hole, one fork hole, the wedge groove, and another fork hole in sequence in the second state to the third state. The side rod rotates around its own axis to the fourth state. The two second positioning components move closer to each other along the second direction and apply a force to the shaft fork. The second state includes the middle rod and the wedge groove being spaced apart. The third state includes the side rod abutting against the outer hole and the fork hole respectively. The fourth state includes the outer peripheral surface of the middle rod abutting against the wedge groove.

8. The shaft fork machining system according to claim 6, characterized in that, The positioning unit further includes a sleeve; the outer peripheral surface of the sleeve abuts against the wedge groove; The first positioning seat further includes an inner seat and an inner hole; the inner seat is detachably connected to the outer hole; the inner hole extends through the inner seat along the first direction; the difference between any two of the outer diameter of the positioning rod, the inner diameter of the inner hole, the inner diameter of the fork hole, and the inner diameter of the sleeve is within a second range. The positioning and clamping state includes the outer seat, one fork body, one middle positioning part, another middle positioning part, and another fork body arranged sequentially along the first direction. The wedge block abuts against the middle positioning part and moves along the second direction so that the mutually distant sides of the two middle positioning parts abut against the mutually close sides of the two fork bodies. The positioning rod passes sequentially through the inner hole, one fork hole, the inner peripheral wall of the sleeve, and the other fork hole to the first state. The two second positioning components move closer to each other along the second direction and simultaneously apply a force to the shaft fork. In the first state, the positioning rod abuts against the inner hole and the fork hole respectively, the inner peripheral surface of the sleeve abuts against the outer peripheral surface of the positioning rod, and the positioning rod abuts against the wedge groove through the sleeve.

9. The shaft fork machining system according to claim 1, characterized in that, The shaft fork machining system also includes a rotating component and a machining component; one side of the rotating component is connected to the central positioning unit, the first positioning unit, and the second positioning component, respectively. The positioning and clamping state also includes the central axis of the shaft coinciding with the set axis, the rotating component rotating around the set axis, and the machining component machining the outer peripheral surface of the shaft fork.

10. A method for machining a shaft fork, characterized in that, The shaft fork machining method is applied to a shaft fork machining system according to any one of claims 1-9, and the shaft fork machining method includes: The fork body of the shaft fork is moved to one of the fork bodies, one of the central positioning parts, another of the central positioning parts, and another of the fork bodies are arranged sequentially along the first direction; The wedge moves along the second direction to abut against the mutually adjacent sides of the two central positioning parts at their respective distances; The first positioning unit moves sequentially through the fork hole that abuts the shaft fork; The two second positioning components move closer to each other along a third direction while applying a force to the axle fork.

11. A method for machining a shaft fork according to claim 10, characterized in that, The first positioning unit includes a positioning rod and a first positioning seat; the first positioning seat, one middle positioning part, and another middle positioning part are sequentially spaced along the first direction; the first positioning seat includes an outer seat and an outer hole; the outer hole penetrates the outer seat along the first direction; the middle positioning unit also includes a wedge groove; the wedge block is recessed along the second direction to form the wedge groove; the wedge groove penetrates the wedge block along the first direction; the positioning rod includes a side rod and a middle rod; one side rod, the middle rod, and the other side rod are coaxially connected sequentially; the maximum distance between the outer peripheral surface of the middle rod and the central axis of the side rod along the radial direction of the side rod is R2; the minimum distance between the outer peripheral surface of the middle rod and the central axis of the side rod along the radial direction of the side rod is R1; the difference between R2 and R1 is greater than or equal to a set value; the difference between any two of the radius of the side rod, R2, the radius of the fork hole, and the radius of the outer hole is within a first range; The first positioning unit moves sequentially through the fork hole that abuts the shaft fork, including: The positioning rod of the first positioning unit passes through and abuts the outer hole, one of the fork holes, the wedge groove, and another fork hole in sequence in the second state to the third state; wherein, the second state includes the middle rod being spaced apart from the wedge groove, and the third state includes the side rods abutting the outer hole and the fork holes respectively; The side rod rotates around its own axis to a fourth state; wherein, the fourth state includes the outer circumferential surface of the middle rod abutting the wedge groove.

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