CN111266463A - Novel inner star wheel forming die structure - Google Patents
Novel inner star wheel forming die structure Download PDFInfo
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- CN111266463A CN111266463A CN202010201178.8A CN202010201178A CN111266463A CN 111266463 A CN111266463 A CN 111266463A CN 202010201178 A CN202010201178 A CN 202010201178A CN 111266463 A CN111266463 A CN 111266463A
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- Prior art keywords
- star wheel
- forming
- cylinder member
- end surface
- die structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a novel inner star wheel forming die structure, which comprises an upper die and a lower die, wherein the upper die comprises an upper forming part, the lower die comprises a lower forming part, the bottom of the upper forming part is provided with an upper notch matched with the upper half part of an inner star wheel standard part, the bottom of the upper forming part is provided with an arch part, the inner wall surface of the arch part is matched with the outer wall surface of a ball channel I, the end surface of the arch part is connected with the maximum diameter part of the ball channel I, the top of the lower forming part is provided with a lower notch matched with the lower half part of the inner star wheel standard part, the lower forming part is provided with an inner sunken part, the end surface of the arch part is connected with the maximum diameter part of the ball channel I, the end surfaces of the upper forming part and the lower forming part can be jointed. The molding of ball tracks with different shapes is realized, and the inner star wheel can be obtained by demolding.
Description
Technical Field
The invention relates to a forming die of an inner star wheel for an automobile transmission shaft, in particular to a novel inner star wheel forming die structure.
Background
The inner star wheel and the outer star wheel of the automobile transmission shaft are assembled together, and transmission in the rotating direction is realized through the balls. The inner star wheel and the outer star wheel of the automobile transmission shaft are important parts of the automobile transmission shaft. The invention relates to an inner star wheel structure which comprises a columnar part body, wherein a shaft hole coaxial with the columnar part body is formed in the columnar part body, spherical ball tracks capable of containing steel balls are formed in the outer edge of the columnar part body, and the number of the spherical ball tracks is 6 and is uniformly distributed on the outer edge of the columnar part body.
In the traditional internal star wheel structure, the shape and the direction of each lane are consistent, namely the upper and lower parting surfaces of the product are on the same plane. Therefore, when the die is designed, the contact surfaces of the upper die and the lower die are the same plane, and the upper die and the lower die are pressed in a contact mode through two planes. The inner star wheel structure related by the invention is a new structure, as shown in fig. 1, the inner star wheel 03 is of a spherical structure, a plurality of spherical raceways are arranged on the surface of the inner star wheel, the shapes of two adjacent spherical raceways are different, and are respectively marked as a first raceway and a second raceway, as shown in fig. 1, the largest diameter position of the second raceway 02 is positioned in the middle of the inner star wheel, and the largest diameter position of the first raceway 01 is not positioned in the middle of the inner star wheel but positioned in the lower part of the inner star wheel. Therefore, the inner star wheel with the structure cannot be obtained by adopting the traditional upper die and the lower die with the flat contact surfaces, and the inner star wheel with the structure is difficult to release from the die.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel inner star wheel forming die structure, which realizes the forming of ball paths with non-uniform shapes and can obtain the inner star wheel by demoulding.
The technical scheme adopted by the invention for solving the technical problems is as follows: novel interior star gear forming die structure, including last mould and lower mould, last mould include the formed part, the lower mould includes lower formed part, last formed part bottom be provided with interior star gear standard component first the notch that goes up that suits, last formed part bottom be provided with hunch portion, the internal face of hunch portion adapt to the outer wall of lane one, the terminal surface of hunch portion links up in the biggest department of the diameter of lane one, lower formed part top be provided with the lower notch that suits with interior star gear standard component lower half, lower formed part portion be provided with sunken portion, the terminal surface of hunch portion links up in the biggest department of the diameter of lane one, last formed part and lower formed part terminal surface can laminate, hunch portion can inlay sunken portion and both terminal surfaces and laminate mutually.
Further preferred embodiments of the present invention: the last mould still including the parcel at the last section of thick bamboo piece periphery, the lower mould still including the parcel at the lower section of thick bamboo piece of lower section of thick bamboo piece periphery, last section of thick bamboo piece the same with lower section of thick bamboo piece structure.
Further preferred embodiments of the present invention: the terminal surface of going up the formed part be located a section of thick bamboo spare, the terminal surface of lower formed part stretch out down a section of thick bamboo spare, last section of thick bamboo spare with down a section of thick bamboo spare laminating, then the terminal surface of lower formed part stretches into a section of thick bamboo spare and goes up the terminal surface laminating of formed part and lower formed part.
Further preferred embodiments of the present invention: the terminal surface of last forming part stretch out and go up a section of thick bamboo spare, the terminal surface of lower forming part be located down a section of thick bamboo spare, last section of thick bamboo spare with down a section of thick bamboo spare laminating, then the terminal surface of going up the forming part stretches into down a section of thick bamboo spare and goes up the terminal surface laminating of forming part and lower forming part.
Further preferred embodiments of the present invention: the upper barrel part is sleeved with a base, the base is fixedly connected with the upper barrel part, and the bottom surface of the base is flush with the bottom surface of the upper barrel part.
Further preferred embodiments of the present invention: the lower barrel part is sleeved with a base, the base is fixedly connected with the lower barrel part, and the top surface of the base is flush with the top surface of the lower barrel part.
Further preferred embodiments of the present invention: the end face of the upper forming piece is transited to the end face of the arch portion through an inclined face, and the end face of the lower forming piece is transited to the end face of the invagination portion through an inclined face.
Further preferred embodiments of the present invention: the upper die is provided with a through hole for the punch to pass through, and the punch can enter the upper notch to act on the inner star wheel.
Further preferred embodiments of the present invention: the lower die is provided with a through hole for the punch to pass through, and the punch can enter the lower notch to act on the inner star wheel.
Compared with the prior art, the inner star wheel forming die has the advantages that the position with the largest diameter of the second ball path of the inner star wheel to be formed is located in the middle of the inner star wheel, and the position with the largest diameter of the first ball path is located in the lower part of the inner star wheel. The upper notch is formed in the bottom of the upper forming piece and used for achieving forming of the upper half portion of the inner star wheel. And then an arch part is arranged at the bottom of the upper forming piece, the inner wall surface of the arch part is adapted to the outer wall surface of the fairway I, and the arch part extends downwards from the upper forming piece and can form the lower part of the middle part of the fairway I. The end face of the arch part is jointed at the position with the largest diameter of the ball way I, the lower forming part is provided with an inward-concave part, the arch part can be embedded into the inward-concave part, and the end faces of the arch part and the lower forming part are jointed. In other words, in the upper die and the lower die, the forming of the first ball channel is realized by taking the maximum diameter position as a boundary line through the structural arrangement of the arch part and the inward sunken part, the parting surfaces of the upper die and the lower die are designed to realize the forming of the first ball channel, and then the upper forming part and the lower forming part which can be jointed at the end surfaces are matched to realize the integral structural forming of the inner star wheel. The end surfaces of the upper die and the lower die are mutually matched curved surfaces, and when the upper die and the lower die are pressed, an inner core wheel can be formed; when the upper die is separated from the lower die, the inner core wheel structure can be separated from the die.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
FIG. 1 is an inner star wheel structure to be formed according to the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural diagram of an upper mold according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a lower mold according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 2 to 4, the first embodiment of the present invention: novel interior star gear forming die structure, including last mould and lower mould, it includes forming part 1 to go up the mould, the lower mould includes forming part 2 down, it is provided with the last notch 3 that suits with interior star gear 03 standard component first to go up forming part 1 bottom, it is provided with hunch-up portion 1a to go up forming part 1 a's internal face adaptation lane a 01 outer wall, the terminal surface of hunch-up portion 1a is located the biggest department of diameter at lane a 01, 2 tops of lower forming part are provided with lower notch 4 that suits with interior star gear 03 standard component second, forming part 2 is down decided the portion and is provided with undercut portion 2a, the terminal surface of hunch-up portion 1a is located the biggest department of diameter at lane a 01, it can laminate with lower forming part 2 terminal surface to go up forming part 1, hunch-up portion 1a can imbed undercut portion 2a and both terminal surfaces laminate.
The upper die further comprises an upper tube 5 wrapped on the periphery of the upper forming part 1, the lower die further comprises a lower tube 6 wrapped on the periphery of the lower forming part 2, and the upper tube 5 and the lower tube 6 are identical in structure. The upper molding member 1, the arch part 1a and the upper tube 5 are of an integral structure. The lower forming piece 2, the inner concave part 2a and the lower tube 6 are of an integral structure.
The end face of the upper forming part 1 is located in the upper barrel part 5, the end face of the lower forming part 2 extends out of the lower barrel part 6, the upper barrel part 5 is attached to the lower barrel part 6, and then the end face of the lower forming part 2 extends into the upper barrel part 5 and the end face of the upper forming part 1 is attached to the end face of the lower forming part 2. Structural design of upper cylinder 5, lower cylinder 6, the structural design of cooperation upper forming piece 1, lower forming piece 2 can make upper and lower mould in the compound die in-process, realize the benchmark location more easily, ensure the processing progress. And the end face of the lower formed part 2 extends into the upper cylinder part 5, and the upper cylinder part 5 applies stress to the lower formed part 2 and the upper formed part 1 to prevent the lower formed part 2 from expanding outwards in the extrusion process.
The upper barrel part 5 is sleeved with a base 7, the base 7 is fixedly connected with the upper barrel part 5, and the bottom surface of the base 7 is flush with the bottom surface of the upper barrel part 5. The base 7 will exert a stress on the upper cylinder 5, avoiding the deformation of the upper cylinder 5 and the upper profile 1 due to the stress, of course, the deformation here is slight.
The lower cylinder part 6 is sleeved with a base 7, the base 7 is fixedly connected with the lower cylinder part 6, and the top surface of the base 7 is flush with the top surface of the lower cylinder part 6. The base 7 will apply a stress to the lower cylinder 6 to avoid the deformation of the lower cylinder 6 and the lower forming member 2 due to stress, which is of course slight.
The end surface of the upper forming member 1 and the end surface of the arch part 1a are in transition through inclined surfaces, and the end surface of the lower forming member 2 and the end surface of the sunken part 2a are in transition through inclined surfaces. The curved surface structure avoids abrasion caused by coaxiality deviation in the die assembly process of the upper die and the lower die.
The upper die is provided with a through hole 8 for a punch to pass through, and the punch can enter the upper notch 3 to act on the inner star wheel. The upper end face of the inner star wheel to be molded is also provided with a counter bore structure, and the punch is used for molding the counter bore.
The lower die is provided with a through hole 8 for a punch to pass through, and the punch can enter the lower notch 4 and act on the inner star wheel. The lower end face of the inner star wheel to be molded is also provided with a counter bore structure, and the punch is used for molding the counter bore.
As shown in fig. 5, the second embodiment of the present invention is the same as the first embodiment, and the different structures are as follows: the end face of the upper forming part 1 extends out of the upper cylinder part 5, the end face of the lower forming part 2 is located in the lower cylinder part 6, the upper cylinder part 5 is attached to the lower cylinder part 6, and then the end face of the upper forming part 1 extends into the lower cylinder part 6 and the end face of the upper forming part 1 is attached to the end face of the lower forming part 2. The design of the solution two is identical to the design of the solution one in principle, and the difference is only that the upper profile part 1 protrudes from the upper cylinder 5 or the lower profile part 2 protrudes from the lower cylinder 6.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention has been described in detail, and the principles and embodiments of the present invention have been described herein using specific examples, which are provided only to assist in understanding the present invention and the core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. Novel interior star gear forming die structure, its characterized in that includes mould and lower mould, last mould include the formed part, the lower mould includes the formed part down, last formed part bottom be provided with interior star gear standard component first the notch that goes up that suits, last formed part bottom be provided with hunch-up portion, the internal face of hunch-up portion adapt to the outer wall of lane one, the terminal surface of hunch-up portion links up in the biggest department of the diameter of lane one, lower formed part top be provided with the lower notch that suits with interior star gear standard component lower half, lower formed part portion be provided with sunken portion, the terminal surface of hunch-up portion links up in the biggest department of the diameter of lane one, last formed part and lower formed part terminal surface can laminate, hunch-up portion can laminate in sunken portion and both terminal surfaces mutually.
2. The novel internal star wheel forming die structure as claimed in claim 1, wherein the upper die further comprises an upper barrel part wrapped on the periphery of the upper forming part, the lower die further comprises a lower barrel part wrapped on the periphery of the lower forming part, and the upper barrel part and the lower barrel part have the same structure.
3. The novel internal star wheel forming die structure of claim 2, wherein the end surface of the upper forming member is located in the upper cylinder member, the end surface of the lower forming member extends out of the lower cylinder member, the upper cylinder member is attached to the lower cylinder member, and the end surface of the lower forming member extends into the upper cylinder member and the upper forming member is attached to the end surface of the lower forming member.
4. The novel internal star wheel forming die structure of claim 2, wherein the end surface of the upper forming member extends out of the upper cylinder member, the end surface of the lower forming member is located in the lower cylinder member, the upper cylinder member is attached to the lower cylinder member, and the end surface of the upper forming member extends into the lower cylinder member and the upper forming member is attached to the end surface of the lower forming member.
5. The novel internal star wheel forming die structure as claimed in claim 2, wherein the upper cylinder member is sleeved with a base, the base is fastened to the upper cylinder member, and the bottom surface of the base is flush with the bottom surface of the upper cylinder member.
6. The novel internal star wheel forming die structure as claimed in claim 2, wherein the lower cylinder member is sleeved with a base, the base is fastened to the lower cylinder member, and the top surface of the base is flush with the top surface of the lower cylinder member.
7. The novel internal star wheel forming die structure as claimed in claim 1, wherein the transition from the end surface of the upper forming member to the end surface of the arch portion is performed by an inclined surface, and the transition from the end surface of the lower forming member to the end surface of the recessed portion is performed by an inclined surface.
8. The novel internal star wheel forming die structure as claimed in claim 1, wherein the upper die is provided with a through hole for the punch to pass through, and the punch can enter the upper notch to act on the internal star wheel.
9. The novel internal star wheel forming die structure as claimed in claim 1, wherein the lower die is provided with a through hole for the punch to pass through, and the punch can enter the lower notch to act on the internal star wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201178.8A CN111266463A (en) | 2020-03-20 | 2020-03-20 | Novel inner star wheel forming die structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010201178.8A CN111266463A (en) | 2020-03-20 | 2020-03-20 | Novel inner star wheel forming die structure |
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| Publication Number | Publication Date |
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| CN111266463A true CN111266463A (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010201178.8A Pending CN111266463A (en) | 2020-03-20 | 2020-03-20 | Novel inner star wheel forming die structure |
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| CN (1) | CN111266463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815423A (en) * | 2022-10-31 | 2023-03-21 | 江苏理研科技股份有限公司 | Split type preforming mould |
-
2020
- 2020-03-20 CN CN202010201178.8A patent/CN111266463A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115815423A (en) * | 2022-10-31 | 2023-03-21 | 江苏理研科技股份有限公司 | Split type preforming mould |
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