CN111941000B - Steering knuckle rod part near-net forming process and forming clamp thereof - Google Patents
Steering knuckle rod part near-net forming process and forming clamp thereof Download PDFInfo
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- CN111941000B CN111941000B CN202010599413.1A CN202010599413A CN111941000B CN 111941000 B CN111941000 B CN 111941000B CN 202010599413 A CN202010599413 A CN 202010599413A CN 111941000 B CN111941000 B CN 111941000B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/14—Making articles shaped as bodies of revolution balls, rollers, cone rollers, or like bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
Abstract
The invention relates to the technical field of processing of steering knuckles, and discloses a near-net forming process for a rod part of a steering knuckle, which comprises the following steps: s1, fixing the disc part of the steering knuckle to a rotatable forming clamp, and enabling the rod part of the steering knuckle to rotate by taking the axis of the rod part as the center of a circle; s2, gradually rolling two symmetrical sides of the shaft center of the rod part to enable the rod part to rotate and deform; s3, turning the deformed and heat-treated rod part to form an inner bearing neck part, a taper rod part, an outer bearing neck part and a threaded end part; and S4, milling one side of the threaded end part to be flat. The invention can reduce material cost.
Description
Technical Field
The invention relates to the technical field of machining of steering knuckles, in particular to a steering knuckle rod part near-net forming process and a forming clamp thereof.
Background
The vertical forging knuckle generally includes a long lug 27, a short lug 28, a disc 29 and a rod, as shown in fig. 15, a main pin hole 30 is further opened through the long lug 27 and the short lug 28, and an angle is generally formed between an axis of the main pin hole 30 and an axis of the rod, and an included angle of 83 degrees is generally formed between the axis of the main pin hole 30 and the axis of the rod.
When the vertical forging type knuckle is processed, one step is to process the rod part of the knuckle into a specific shape, and the processing aims at processing an inner bearing neck part 31, a taper rod part 32, an outer bearing neck part 33 and a threaded end part 34. The conventional machining method is to perform multiple turning operations on the bar portion of the knuckle in the blank state to form the shapes of the inner bearing neck portion 31, the tapered bar portion 32, the outer bearing neck portion 33, and the threaded end portion 34.
Disclosure of Invention
The invention aims to provide a steering knuckle rod part near-net forming process and a forming clamp thereof, and aims to solve the problem of high material cost.
The technical purpose of the invention is realized by the following technical scheme: a steering knuckle stem near-net-shape forming process comprises the following steps:
s1, fixing the disc part of the steering knuckle to a rotatable forming clamp, and enabling the rod part of the steering knuckle to rotate by taking the axis of the rod part as the center of a circle;
s2, gradually rolling two symmetrical sides of the shaft center of the rod part to enable the rod part to rotate and deform;
s3, turning the deformed and heat-treated rod part to form an inner bearing neck part, a taper rod part, an outer bearing neck part and a threaded end part;
and S4, milling one side of the threaded end part to be flat.
The invention is further provided with: the diameter difference between the inner bearing neck position after the roll grinding in the S2 and the inner bearing neck position after the turning in the S3 is 2mm, the diameter difference between the outer bearing neck position after the roll grinding in the S2 and the outer bearing neck position after the turning in the S3 is 2mm, the diameter difference between the threaded end position after the roll grinding in the S2 and the threaded end position after the turning in the S3 is 2mm, and the shape of the tapered rod position after the roll grinding in the S2 is consistent with the shape of the tapered rod position after the turning in the S3.
The invention is further provided with: the rotation of the rod part in the S2 is driven rotation.
The invention also provides a forming jig for use in a knuckle spindle near-net forming process as defined in any one of the above, comprising,
the supporting cylinder is rotatably arranged, one side of the supporting cylinder is provided with a long containing hole and a short containing hole, the inner wall of the long containing hole is obliquely provided with a long fixed hole, and the inner wall of the short containing hole is obliquely provided with a short fixed hole which is coaxial with the long fixed hole;
the transmission rod is rotatably connected in the support cylinder, a straight line where the axis of the transmission rod is located is parallel to a straight line where the axis of the long fixing hole is located, a long solid body and a short solid body are movably arranged on the transmission rod, the long solid body and the short solid body are respectively in threaded connection with the transmission rod, two limiting plates are further arranged on the inner wall of the support cylinder in parallel, the long solid body and the short solid body are located between the two limiting plates, two sides of the long solid body and two sides of the short solid body are movably attached to the side walls of the two limiting plates, a long fixing rod is arranged on the long solid body, a short fixing rod is arranged on the short solid body, and the transmission rod has a first state and a second state;
when the transmission rod is in the first state, the long fixing rod is positioned outside the long fixing hole, and the short fixing rod is positioned outside the short fixing hole;
when the transmission rod is in the second state, the end part, far away from the long solid, of the long fixed rod is located inside the long fixed hole, and the end part, far away from the short solid, of the short fixed rod is located inside the short fixed hole.
The invention is further provided with: the transmission rod is provided with driven bevel teeth, the driven bevel teeth penetrate through the supporting barrel and are connected with the supporting barrel in a rotating mode to be provided with a driving rod, one end of the driving rod is located outside one side, close to the long containing hole, of the supporting barrel, the other end of the driving rod is provided with driving bevel teeth meshed with the driven bevel teeth, and the straight line where the axis of the driving rod is located is perpendicular to the straight line where the axis of the transmission rod is located.
The invention is further provided with: the long solid hole long solid the short solid hole and the short solid distributes in proper order, with long solid is connected the screw thread of drive rod portion with short solid is connected the direction of the screw thread of drive rod portion is the same, set up the first chucking groove of rectangular shape on the support section of thick bamboo, first chucking groove is located long solid hole with between the short solid hole, be provided with first bracing piece on the inner wall of a support section of thick bamboo, the length direction of first bracing piece with the length direction in first chucking groove parallels, the activity is provided with the first chucking spare of L shape on the first bracing piece, the both sides of first chucking spare all the activity laminate in the inner wall in first chucking groove, first chucking spare is located tip in the support section of thick bamboo with the activity is provided with first articulated pole between the long solid.
The invention is further provided with: first chucking groove is provided with two, two first chucking groove and two first chucking spare all is located the both sides of long solid.
The invention is further provided with: the second chucking groove of rectangular shape has still been seted up on the support section of thick bamboo, the length direction in second chucking groove with the length direction in first chucking groove is mutually perpendicular, be provided with the second chucking spare of U-shaped in the second chucking groove, the both sides of second chucking spare all move about laminate in the inner wall in second chucking groove, the second chucking spare is located support tip in the section of thick bamboo with short solid fixed connection, the other end is located support the outside of a section of thick bamboo.
The invention is further provided with: the long fixing holes, the long solid bodies, the short solid bodies and the short fixing holes are distributed in sequence, the direction of the screw thread of the transmission rod part connected with the long solid bodies is opposite to the direction of the screw thread of the transmission rod part connected with the short solid bodies, the long solid and the short solid are positioned between the long fixing rod and the short fixing rod, the support cylinder is provided with a third elongated clamping groove, the third clamping groove is positioned between the long fixing hole and the short fixing hole, the inner wall of the supporting cylinder is provided with a second supporting rod, the length direction of the second supporting rod is parallel to the length direction of the third clamping groove, an L-shaped third clamping piece is movably arranged on the second supporting rod, the equal activity in both sides of third chucking spare laminate in the inner wall in third chucking groove, the third chucking spare is located tip in the support section of thick bamboo with long solid with equal activity is provided with the second hinge bar between the short solid.
The invention is further provided with: the third chucking groove is provided with two, two the third chucking groove and two the third chucking spare all is located the both sides of long solid with the short solid.
The invention has the beneficial effects that: the method has the advantages that the blank is firstly rolled to be close to the shape of the finished product rod part, and then is turned, and the rod part rolled by the roll is close to the shape and the size of the finished product rod part, so that the total amount of turning can be reduced, the utilization rate of materials is improved, the abrasion of a cutter is reduced, and the like; secondly in the actual production, the shape of the blank of pole portion can be set to shorter shape, then in the process of roll milling, pole portion can take place deformation, become thin and become long (through setting up the shape of the roll milling roller into pressing pole portion into this shape), until after the roll milling, pole portion shape is close to the finished product, so subsequent processing is convenient.
Wherein, not only the machining allowance at inner bearing neck position, outer bearing neck position and screw end position has reduced, and the taper rod position need not to carry out subsequent processing after being rolled to the formation by the roller simultaneously, has consequently still reduced the step of processing.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a forming fixture used in a knuckle stem near-net forming process of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a first cross-sectional view of an embodiment of a forming fixture of the present invention used in a near-net forming process for a knuckle stem;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is an enlarged view of portion C of FIG. 4;
FIG. 6 is a second cross-sectional view of an embodiment of a forming fixture for use in a near-net forming process for a knuckle stem of the present invention;
FIG. 7 is an enlarged view of portion D of FIG. 6;
fig. 8 is an enlarged view of portion E of fig. 6;
FIG. 9 is a first schematic structural view of an embodiment of a support tube portion of a first embodiment of a forming fixture for use in a near net forming process for a knuckle stem according to the present invention;
FIG. 10 is a second schematic structural view of an embodiment of a support tube portion of a first embodiment of a forming fixture for use in a near-net forming process for a knuckle stem according to the present invention;
fig. 11 is an enlarged view of portion F of fig. 10;
FIG. 12 is a cross-sectional view of an embodiment of a support tube portion of an embodiment of a forming fixture for use in a near net forming process for a knuckle stem according to the present invention;
fig. 13 is an enlarged view of portion G of fig. 12;
FIG. 14 is a schematic view of an embodiment of a partial structure in an embodiment of a forming fixture used in a knuckle stem near-net forming process according to the present invention;
fig. 15 is a schematic view of a knuckle.
In the figure, 1, supporting the cylinder; 2. a long containing hole; 3. a short-capacitance hole; 4. lengthening a fixed hole; 5. short fixing holes; 6. a transmission rod; 7. a long solid; 8. short solids; 9. a limiting plate; 10. a long fixing rod; 11. short fixing rods; 12. driven bevel gears; 13. a drive rod; 14. driving bevel gears; 15. a first clamping groove; 16. a first support bar; 17. a first clamping member; 18. a first hinge lever; 19. a second clamping groove; 20. a second clamping member; 21. a third clamping groove; 22. a second support bar; 23. a third clamping member; 24. a second hinge lever; 25. a drive disc; 26. a support block; 27. a long ear; 28. short ears; 29. a disk portion; 30. a king pin hole; 31. an inner bearing journal portion; 32. a tapered rod part; 33. an outer bearing journal portion; 34. a threaded end portion.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
A process for near-net forming a knuckle stem, the knuckle having a structure as shown in fig. 15, comprising the steps of:
s1, fixing the disc part 29 of the knuckle to a rotatable forming fixture, and rotating the rod part of the knuckle around the axis of the rod part (more precisely, the axis of the finished rod part);
s2, gradually rolling two symmetrical sides of the shaft center of the rod part to enable the rod part to rotate and deform;
s3, turning the deformed and heat-treated rod part to process an inner bearing neck part 31, a taper rod part 32, an outer bearing neck part 33 and a threaded end part 34;
and S4, milling one side of the thread end part 34 flat.
The diameter difference between the inner bearing neck part 31 after being rolled in the S2 and the inner bearing neck part 31 after being turned in the S3 is 2mm, the diameter difference between the outer bearing neck part 33 after being rolled in the S2 and the outer bearing neck part 33 after being turned in the S3 is 2mm, the diameter difference between the threaded end part 34 after being rolled in the S2 and the threaded end part 34 after being turned in the S3 is 2mm, and the shape of the tapered rod part 32 after being rolled in the S2 is consistent with the shape of the tapered rod part 32 after being turned in the S3. The rotation of the rod part in the S2 is driven rotation.
The method has the advantages that the blank is firstly rolled to be close to the shape of the finished product rod part, and then is turned, and the rod part rolled by the roll is close to the shape and the size of the finished product rod part, so that the total amount of turning can be reduced, the utilization rate of materials is improved, the abrasion of a cutter is reduced, and the like; secondly in the actual production, the shape of the blank of pole portion can be set to shorter shape, then in the process of roll milling, pole portion can take place deformation, become thin and become long (through setting up the shape of the roll milling roller into pressing pole portion into this shape), until after the roll milling, pole portion shape is close to the finished product, so subsequent processing is convenient.
In this case, the machining allowance of not only the inner bearing neck portion 31, the outer bearing neck portion 33, and the screw end portion 34 is reduced, but also the subsequent machining is not required after the tapered rod portion 32 is roll-formed, thereby reducing the number of machining steps. Meanwhile, after the roll milling is completed, the depth of turning required on the inner bearing neck part 31, the outer bearing neck part 33 and the thread end part 34 is only 1mm, the turning depth is small, and the reserved depth enables the roll milling to be carried out at high quality (namely if the size of the roll milling is required to be continuously close to the size after turning, the difficulty in practical implementation is high); during the rolling, the rod part, the disc part 29 and the forming clamp rotate passively along with the rotation of the rolling structure, so that the rod part and the rolling structure can be well matched.
It should be understood that the edges of the structure where the stem portion is first rolled are step-like, which enables the shape of the inner bearing neck portion 31, outer bearing neck portion 33, tapered stem portion 32 and threaded end portion 34 to be rolled out; secondly, the structure of the roller mill (i.e. the roller mill rollers) is that the two roller mill rollers are gradually close to each other synchronously during the roller mill process, and the structure for driving the two roller mill rollers to move is not limited too much, and it may be a structure that can achieve the purpose by driving through a large lead screw, a large oil cylinder, or other roller mills or other equipment, and since the structure is not claimed in the present application, the scope of the present application is not affected even if the structure is not described in detail, and those skilled in the art will understand and recognize the content of the present application.
The present invention also provides a forming jig for use in a knuckle stem near-net forming process as described in any one of the above, as shown in fig. 1 to 13, comprising,
the supporting device comprises a supporting barrel 1 which is rotatably arranged, wherein one side of the supporting barrel 1 is provided with a long containing hole 2 and a short containing hole 3, the inner wall of the long containing hole 2 is obliquely provided with a long fixed hole 4, and the inner wall of the short containing hole 3 is obliquely provided with a short fixed hole 5 which is coaxial with the long fixed hole 4;
the transmission rod 6 is rotatably connected in the support barrel 1, a straight line where an axis of the transmission rod 6 is located is parallel to a straight line where an axis of the long fixing hole 4 is located, a long solid 7 and a short solid 8 are movably arranged on the transmission rod 6, the long solid 7 and the short solid 8 are respectively in threaded connection with the transmission rod 6, two limiting plates 9 are further arranged on the inner wall of the support barrel 1 in parallel, the long solid 7 and the short solid 8 are located between the two limiting plates 9, two sides of the long solid 7 and two sides of the short solid 8 are movably attached to the side walls of the two limiting plates 9, a long fixing rod 10 is arranged on the long solid 7, a short fixing rod 11 is arranged on the short solid 8, and the transmission rod 6 has a first state and a second state;
when the transmission rod 6 is in the first state, the long fixing rod 10 is positioned outside the long fixing hole 4, and the short fixing rod 11 is positioned outside the short fixing hole 5;
when the transmission rod 6 is in the second state, the end of the long fixed rod 10 far away from the long solid body 7 is positioned inside the long fixed hole 4, and the end of the short fixed rod 11 far away from the short solid body 8 is positioned inside the short fixed hole 5.
The transmission rod 6 is provided with a driven bevel gear 12, a driving rod 13 penetrates through the support barrel 1 and is rotatably connected with the support barrel 1, one end of the driving rod 13 is located outside one side, close to the opening of the long containing hole 2, of the support barrel 1, the other end of the driving rod 13 is provided with a driving bevel gear 14 meshed with the driven bevel gear 12, and the straight line where the axis of the driving rod 13 is located is perpendicular to the straight line where the axis of the transmission rod 6 is located.
The long solid holes 4, the long solid bodies 7, the short solid holes 5 and the short solid bodies 8 are distributed in sequence, the threads of the portion of the driving rod 6 connected to the long solid body 7 and the threads of the portion of the driving rod 6 connected to the short solid body 8 are in the same direction, the supporting cylinder 1 is provided with a first strip-shaped clamping groove 15, the first clamping groove 15 is positioned between the long fixing hole 4 and the short fixing hole 5, a first supporting rod 16 is arranged on the inner wall of the supporting cylinder 1, the length direction of the first supporting rod 16 is parallel to the length direction of the first clamping groove 15, the first support rod 16 is movably provided with an L-shaped first clamping piece 17, two sides of the first clamping piece 17 are movably attached to the inner wall of the first clamping groove 15, a first hinge rod 18 is movably arranged between the end of the first clamping piece 17 positioned in the support cylinder 1 and the long solid body 7.
The first fastening grooves 15 are provided in two, the first fastening grooves 15 and two, the first fastening members 17 are located on both sides of the long solid body 7.
Support the second chucking groove 19 of rectangular shape still seted up on a section of thick bamboo 1, the length direction in second chucking groove 19 with the length direction looks perpendicular in first chucking groove 15, be provided with the second chucking spare 20 of U-shaped in the second chucking groove 19, the both sides of second chucking spare 20 all activity laminate in the inner wall in second chucking groove 19, second chucking spare 20 is located support tip in a section of thick bamboo 1 with 8 fixed connection of short solid, the other end is located support the outside of a section of thick bamboo 1.
Before the roller grinding is carried out, firstly, the steering knuckle needs to be fixed on the rotatable supporting cylinder 1, at the moment, the steering knuckle only needs to be moved, the long lug 27 is clamped into the long containing hole 2, meanwhile, the short lug 28 is clamped into the short containing hole 3, the steering knuckle is continuously pushed, the long lug 27 is completely clamped into the long containing hole 2, the short lug 28 is completely clamped into the short containing hole 3, in this state, the disc part 29 is attached to the supporting cylinder 1, the long fixing hole 4, the short fixing hole 5 and the main pin hole 30 of the steering knuckle are coaxial, and the diameters of the three are equal.
Then, the driving rod 13 is rotated, the driving rod 13 drives the driving bevel gear 14 to rotate, the driving bevel gear 14 drives the driven bevel gear 12 to rotate, the driven bevel gear 12 drives the driving rod 6 to rotate, and the driving rod 6 drives the long solid 7 and the short solid 8 which are threaded with the driving rod 6 to move towards the long fixed hole 4 and the short fixed hole 5 respectively; furthermore, in the moving process of the long solid 7 and the short solid 8, because the two sides of the long solid 7 and the short solid 8 are limited by the limiting plates 9 respectively, the long solid 7 and the short solid 8 can only translate along the axis direction of the transmission rod 6 and can not rotate.
Furthermore, after the fixing of the knuckle is completed, the rod part is horizontal, but a certain included angle is formed between the axis of the main pin hole 30 and the axis of the rod part, and in this embodiment, the included angle is preferably 83 degrees, so that the included angle between the straight line where the axes of the long fixing hole 4, the short fixing hole 5, the transmission rod 6, the driven bevel gear 12, the long fixing rod 10 and the short fixing rod 11 are located and the axis of the rod part of the knuckle is 83 degrees, so that when the transmission rod 6 moves obliquely, which can drive the long solid 7, the short solid 8, the long fixed rod 10 and the short fixed rod 11 to also perform inclined movement, and, at the end, the long and short fastening rods 10, 11 of the tilted shape and of the tilting movement are allowed to enter the long and short fastening holes 4, 5 which are likewise tilted, the end of the long fastening rod 10 and the end of the short fastening rod 11 are then inserted into the inclined main pin holes 30, respectively, so that the long lug 27 and the short lug 28 are fixed and positioned.
Meanwhile, the included angle between the straight line of the axis of the driving rod 13 and the driving bevel gear 14 and the straight line of the axis of the steering knuckle stem part is 7 degrees, so that when the driving rod 13 rotates the driven bevel gear 12 through the driving bevel gear 14, the driving bevel gear 14 can be better meshed with the driven bevel gear 12. Moreover, the driving end of the driving lever 13 is located outside the support cylinder 1 and does not coincide with the disc portion 29 of the knuckle, so it is more convenient to actually rotate the driving lever 13.
More preferably, the length and the movement range of the long fixing rod 10 and the short fixing rod 11 are both small, so that the long fixing rod 10 does not need to completely penetrate through the long lug 27 and the short fixing rod 11 does not need to completely penetrate through the short lug 28 in actual use; the top edges of the long fixing rod 10 and the short fixing rod 11 are in a dome shape, so that the long fixing rod and the short fixing rod can be more conveniently inserted into the main pin hole 30; after the long fixing rod 10 and the short fixing rod 11 penetrate into the main pin hole 30, the inner wall of the main pin hole 30 on the long lug 27 is limited by the long fixing rod 10, and the outer side of the main pin hole is limited by the inner wall of the long accommodating hole 2; the inner wall of the main pin hole 30 on the short lug 28 is limited by the short fixing rod 11, and the outer side is limited by the inner wall of the short accommodating hole 3; at the same time, the disk 29 is pressed against the support cylinder 1, so that the position of the steering knuckle is fixed.
Meanwhile, when the long solid body 7 moves upwards (in the state shown in fig. 3), the long solid body drives the first clamping member 17 to move through the first hinge rod 18 (a gap or a space for the movement of the first hinge rod 18 is reserved between the limiting plate 9 and the inner wall of the support cylinder 1), and meanwhile, because the first clamping member 17 is also limited by the first clamping groove 15 and the first support rod 16, the first clamping member 17 can only move along the length direction of the first clamping groove 15, and the direction is the direction in which the first clamping member 17 approaches the steering knuckle disk part 29; the first clamping member 17 is clamped to the side of the disc 29 until the elongated fastener 10 is inserted into the main pin hole 30 to a proper position. Similarly, the first clamping member 17 on the other side is clamped on the other side of the disc part 29, so that the long solid body 7 can also drive the first clamping member 17 to limit the two sides of the disc part 29, and the disc part 29 is more stably attached to the support cylinder 1 because the first clamping member 17 is L-shaped. Similarly, when the long solid body 7 is moved downwards, the two first clamping members 17 release the disc 29 and disengage the long fastening rod 10 from the main pin hole 30 of the long lug 27, or release of the long lug 27 is achieved.
When the long solid 7 moves, the height of the short solid 8 changes (the transmission rod 6 drives the long solid 7 and the short solid 8 to move simultaneously), and the short solid rod 11 can be driven to synchronously enter the main pin hole 30 or be pulled out of the main pin hole 30. Wherein, the second clamping piece is U-shaped because the short lug 28 is positioned at the position of the disk part 29 close to the middle; also, when the long fastening bar 10 reaches a predetermined position, the second catching member abuts against the edge of the disk 29, and when the short fastening bar 11 is released from the main pin hole 30, the second catching member 20 is also separated from the disk 29.
Since the transmission rod 6 is inclined, the moving direction of the long and short solids 7, 8 is also inclined, firstly, since the first clamping member 17 is connected with the long solid 7 through the movable first hinge rod 18, even if the distance between the long solid 7 and the inner wall of the support cylinder 1 is larger and larger, the movement of the first clamping member 17 is not influenced; while the part of the second clamping member 20 located outside the support cylinder 1 is also gradually closer to the outer wall of the support cylinder 1 when moving upwards, so that it can also normally press against the disc 29 and be separated from the disc 29.
Meanwhile, it should be understood that if the disc portion 29 is not in a mirror-symmetrical state, the shape and size of the two first clamping members 17 are properly adjusted according to the condition of the disc portion 29 of the knuckle, and likewise, the length of the first hinge lever 18 is required to be adjusted according to the condition of the disc portion 29, so that the purpose of being fastened to both sides of the disc portion 29 is finally achieved.
Wherein, the connection mode between the first hinged rod 18 and the long solid 7 and the first clamping member 17 can be that two ends of the first hinged rod 18 are provided with a ring, then the first clamping member 17 and the long solid 7 are provided with a ring, and then the ring is movably connected with the ring; or the two ends of the first hinged rod 18 are provided with spherical bodies, the spherical grooves are arranged on the first clamping member 17 and the long solid body 7, and the spherical grooves only wrap the spherical bodies of 3/4, so that the two ends of the first hinged rod 18 can be simultaneously hinged with the long solid body 7 and the first clamping member, and the first clamping member 17 can be normally driven to move when the long solid body 7 is close to or far away from the support cylinder 1. Or the first articulated rod 18 is articulated to the long solid body 7 and the first clamping member 17 in other conventional ways (as is the second articulated rod 24), without being limited in any way.
The structure for supporting the supporting cylinder 1 to rotate can be a large bearing (the inner ring of the large bearing sleeve is connected to the outer wall of the supporting cylinder 1) or a large bearing and a thrust bearing which are matched with each other (the inner ring of the large bearing sleeve is connected to the outer wall of the supporting cylinder 1, and the thrust bearing is abutted to one side, far away from the long containing hole 2, of the supporting cylinder 1, so that the pressure bearing capacity is improved, and the large bearing is protected) or other structures which can be realized, and excessive limitation is not performed.
The outer wall of the driving rod 13 is also provided with a driving disk 25, the driving disk 25 can be conveniently rotated through a cross groove in the middle of the driving disk 25, then the driving rod 13 is driven to rotate through the driving disk 25, and the edge of the driving disk 25 is smooth; after the long lug 27 and the short lug 28 enter the long containing hole 2 and the short containing hole 3 respectively, the driving disk 25 is attached to one side of the disk part 29; therefore, after the disk 29 is fixed, the disk 29 has a limited structure on the upper, lower, left, and right sides, thereby improving the positional stability of the disk 29.
A supporting block 26 is further provided on the inner wall of the supporting cylinder 1, and the middle portion of the driving rod 13 passes through the supporting block 26 and is rotatably connected with the supporting block 26, so that the positional stability of the driving rod 13 is improved.
Example 2
A forming fixture in a knuckle spindle near-net forming process is different from the first embodiment in that, as shown in FIG. 14, the long fixing hole 4, the long solid 7, the short solid 8 and the short fixing hole 5 are sequentially distributed, the direction of the screw thread of the portion of the driving rod 6 connected with the long solid 7 is opposite to the direction of the screw thread of the portion of the driving rod 6 connected with the short solid 8, the long solid 7 and the short solid 8 are located between the long fixing rod 10 and the short fixing rod 11, a third elongated clamping groove 21 is formed in the support cylinder 1, the third clamping groove 21 is located between the long fixing hole 4 and the short fixing hole 5, a second support rod 22 is arranged on the inner wall of the support cylinder 1, the length direction of the second support rod 22 is parallel to the length direction of the third clamping groove 21, an L-shaped third clamping member 23 is movably arranged on the second support rod 22, the both sides of third chucking spare 23 all the activity laminating in the inner wall of third chucking groove 21, third chucking spare 23 is located tip in the support cylinder 1 with long solid 7 with all the activity is provided with second articulated rod 24 between the short solid 8. The third clamping grooves 21 are provided in two, and the two third clamping grooves 21 and the two third clamping members 23 are located on both sides of the long solid body 7 and the short solid body 8.
Because the directions of the external threads on the upper side and the lower side of the driving rod 6 are opposite, when the driving rod 6 rotates, the long solid bodies 7 can approach or separate from each other, so that the long fixed rod 10 and the short fixed rod 11 can simultaneously enter the main pin hole 30 and simultaneously exit from the main pin hole 30. Meanwhile, when the long solid body 7 and the short solid body 8 are far away from each other, the long ear 27 and the short ear 28 are fixed, in the process, the long solid body 7 and the short solid body 8 respectively drive the third clamping piece 23 through the second hinge rod 24, and move in the third clamping groove 21 along the length direction of the second support rod 22, so that the two third clamping pieces 23 can be clamped on the disc part 29; similarly, when the long fastening bar 10 and the short fastening bar 11 are disengaged from the main pin hole 30, the long solid 7 and the short solid 8 also drive the third fastening member 23 away from the disc portion 29 via the second hinge lever 24, thereby releasing the disc portion 29.
As in the first embodiment, according to the situation of the disc part 29, there is a certain adaptability difference between the two third clamping grooves 21, the two third clamping members 23 and the four second hinge rods 24, and the adaptability difference achieves the effect that when the long fixing rod 10 and the short fixing rod 11 enter the main pin hole 30 to proper positions at the same time, the two third clamping members 23 are respectively fastened to both sides of the disc part 29; and both the third fastening members 23 can be separated from the disc portion 29 after both the long fastening bar 10 and the short fastening bar 11 are released from the main pin hole 30.
It should be noted that, in the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.
Claims (6)
1. A steering knuckle rod part near-net forming process is characterized by comprising the following steps of: the method comprises the following steps:
s1, fixing the disc part (29) of the steering knuckle to a rotatable forming clamp, and enabling the rod part of the steering knuckle to rotate by taking the axis of the rod part as the center of a circle;
s2, gradually rolling two symmetrical sides of the shaft center of the rod part to enable the rod part to rotate and deform;
s3, turning the deformed and heat-treated rod part to process an inner bearing neck part (31), a taper rod part (32), an outer bearing neck part (33) and a thread end part (34);
s4, milling one side of the threaded end part (34) to be flat;
a forming jig used in the S1 and S2, comprising,
the supporting device comprises a supporting barrel (1) which is rotatably arranged, wherein a long containing hole (2) and a short containing hole (3) are formed in one side of the supporting barrel (1), a long fixing hole (4) is formed in the inner wall of the long containing hole (2) in an inclined mode, and a short fixing hole (5) which is coaxial with the long fixing hole (4) is formed in the inner wall of the short containing hole (3) in an inclined mode;
the transmission rod (6) is rotatably connected in the support cylinder (1), a straight line at the axis of the transmission rod (6) is parallel to a straight line at the axis of the long solid hole (4), the transmission rod (6) is movably provided with a long solid body (7) and a short solid body (8), the long solid body (7) and the short solid body (8) are respectively in threaded connection with the transmission rod (6), the inner wall of the support cylinder (1) is further parallelly provided with two limiting plates (9), the long solid body (7) and the short solid body (8) are both positioned between the two limiting plates (9), the two sides of the long solid body (7) and the two sides of the short solid body (8) are both movably attached to the side walls of the two limiting plates (9), the long solid body (7) is provided with a long solid rod (10), the short solid body (8) is provided with a short solid rod (11), the transmission rod (6) has a first state and a second state;
when the transmission rod (6) is in the first state, the long fixing rod (10) is positioned outside the long fixing hole (4), and the short fixing rod (11) is positioned outside the short fixing hole (5);
when the transmission rod (6) is in the second state, the end part, far away from the long solid body (7), of the long fixing rod (10) is located inside the long fixing hole (4), and the end part, far away from the short solid body (8), of the short fixing rod (11) is located inside the short fixing hole (5);
the long solid body (4), the long solid body (7), the short solid body (5) and the short solid body (8) distribute in proper order, with the long solid body (7) is connected the screw thread of transfer line (6) part with the short solid body (8) is connected the direction of the screw thread of transfer line (6) part is the same, set up rectangular shape first chucking groove (15) on the support cylinder (1), first chucking groove (15) are located long solid hole (4) with between the short solid hole (5), be provided with first bracing piece (16) on the inner wall of support cylinder (1), the length direction of first bracing piece (16) with the length direction in first chucking groove (15) parallels, the activity is provided with first chucking spare (17) of L shape on first bracing piece (16), the both sides of first chucking spare (17) are all the activity laminate in the inner wall in first chucking groove (15), a first hinged rod (18) is movably arranged between the end part of the first clamping piece (17) positioned in the supporting cylinder (1) and the long solid body (7).
2. The near net shape forming process of a knuckle stem according to claim 1, wherein: the diameter difference of the inner bearing neck position (31) after the roll grinding in the S2 and the inner bearing neck position (31) after the turning in the S3 is 2mm, the diameter difference of the outer bearing neck position (33) after the roll grinding in the S2 and the outer bearing neck position (33) after the turning in the S3 is 2mm, the diameter difference of the threaded end position (34) after the roll grinding in the S2 and the threaded end position (34) after the turning in the S3 is 2mm, and the shape of the tapered rod position (32) after the roll grinding in the S2 is consistent with the shape of the tapered rod position (32) after the turning in the S3.
3. A knuckle stem near-net shape forming process according to claim 1 or 2, wherein: the rotation of the rod part in the S2 is driven rotation.
4. The near net shape forming process of a knuckle stem according to claim 1, wherein: be provided with driven awl tooth (12) on transfer line (6), pass support a section of thick bamboo (1) and with support a section of thick bamboo (1) and rotate to be connected and be provided with actuating lever (13), the one end of actuating lever (13) is located support a section of thick bamboo (1) and be close to the outside of long appearance hole (2) opening one side, the other end be provided with driven awl tooth (12) engaged with initiative awl tooth (14), the straight line at the axle center place of actuating lever (13) with the straight line at the axle center place of transfer line (6) is mutually perpendicular.
5. The near net shape forming process of a knuckle stem according to claim 1, wherein: the first clamping grooves (15) are provided with two, two first clamping grooves (15) and two first clamping pieces (17) are located on two sides of the long solid body (7).
6. The near net shape forming process of a knuckle stem according to claim 5, wherein: support second chucking groove (19) of rectangular shape still to have seted up on a section of thick bamboo (1), the length direction in second chucking groove (19) with the length direction in first chucking groove (15) is mutually perpendicular, be provided with second chucking spare (20) of U-shaped in second chucking groove (19), the both sides of second chucking spare (20) all the activity laminate in the inner wall in second chucking groove (19), second chucking spare (20) are located support tip in a section of thick bamboo (1) with short solid (8) fixed connection, the other end is located support the outside of a section of thick bamboo (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010599413.1A CN111941000B (en) | 2020-06-28 | 2020-06-28 | Steering knuckle rod part near-net forming process and forming clamp thereof |
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| CN202010599413.1A CN111941000B (en) | 2020-06-28 | 2020-06-28 | Steering knuckle rod part near-net forming process and forming clamp thereof |
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| CN111941000A CN111941000A (en) | 2020-11-17 |
| CN111941000B true CN111941000B (en) | 2021-08-31 |
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| CN104339202A (en) * | 2013-07-26 | 2015-02-11 | 东风德纳车桥有限公司 | Flexible quick-changing locating device |
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| CN111941000A (en) | 2020-11-17 |
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