CN216965828U - Core column for cold drawing process of automobile engine pipeline - Google Patents
Core column for cold drawing process of automobile engine pipeline Download PDFInfo
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- CN216965828U CN216965828U CN202123371148.0U CN202123371148U CN216965828U CN 216965828 U CN216965828 U CN 216965828U CN 202123371148 U CN202123371148 U CN 202123371148U CN 216965828 U CN216965828 U CN 216965828U
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- screw
- rod
- core column
- screw rod
- column head
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Abstract
The utility model discloses a core column for a cold drawing process of an automobile engine pipeline, which comprises the following steps: the core column head is arranged at one end of the connecting rod and is a cone; the extrusion table is arranged on the circumference of the core column head, extends from one end of the core column head to the other end of the core column head and gradually reduces the radius to form a cone structure of the core column head; the telescopic control mechanism is arranged at the other end of the connecting rod, and a first screw rod, a second screw rod and a pull rod are arranged in the telescopic control mechanism; a first screw rod inner screw hole is arranged in the first screw rod along the axial direction of the first screw rod, a second screw rod inner screw hole is also arranged in the second screw rod along the axial direction of the second screw rod, and a pull rod inner screw hole is arranged in the pull rod; one end of the second screw is in bolt connection with the pull rod through the inner screw hole of the pull rod, the other end of the second screw is in bolt connection with the inner screw hole of the first screw, and one end of the first screw is axially arranged in the connecting rod. The cold drawing core column is controlled by the telescopic screw rod matched with the bearing, so that the purpose of improving the product precision is achieved.
Description
Technical Field
The utility model relates to the field of engine pipeline manufacturing, in particular to a core column for an automobile engine pipeline cold-drawing process.
Background
The engine is the heart of an automobile, and a transmission system of the engine cannot be separated from a pipeline. Most of seamless pipelines used by the existing engine transmission system are cold-formed, and the specific processing efficiency is low.
The adjustment between a core column and a male die in the existing cold-drawing die is difficult, so that the inner diameter of a pipe fitting produced by a cold-drawing process can not meet the tolerance requirement of +/-0.08 mm frequently, and the product rejection rate is high.
SUMMERY OF THE UTILITY MODEL
In order to achieve the purpose, the utility model adopts the technical scheme that:
a stem for use in an automotive engine pipe cold drawing process, comprising:
the core column head is arranged at one end of the connecting rod and is a cone;
the extrusion table is arranged on the periphery of the core column head, extends from one end of the core column head to the other end of the core column head and gradually reduces the radius to form a cone structure of the core column head, and the inner diameter and the outer diameter of the extruded pipe fitting are controlled by controlling the clearance between the extrusion table and the male die;
the telescopic control mechanism is arranged at the other end of the connecting rod, and a first screw rod, a second screw rod and a pull rod are arranged in the telescopic control mechanism;
a first screw rod inner screw hole is formed in the first screw rod along the axial direction of the first screw rod, a second screw rod inner screw hole is also formed in the second screw rod along the axial direction of the second screw rod, and a pull rod inner screw hole is formed in the pull rod;
one end of the second screw is in threaded connection with the pull rod through the pull rod inner threaded hole, the other end of the second screw is in threaded connection with the first screw inner threaded hole, one end of the first screw is axially arranged in the connecting rod, and the purpose of changing the longitudinal position degree of the core column head is achieved by adjusting the extending length of the first screw and the second screw, so that the inner diameter and the outer diameter of the extruded pipe fitting are adjusted and controlled.
In a preferred embodiment of the present invention, the other end of the connecting rod is sleeved with a pair of bearings, and the bearings enable the connecting rod to be extended and contracted in a stable state to avoid shaking.
In a preferred embodiment of the utility model, the connecting rod and the side part of the bearing are also sleeved with journal sleeves, so that the sealing performance of the bearing is enhanced.
In a preferred embodiment of the present invention, the pull rod further comprises a base disposed at the other end of the pull rod to provide support for the pull rod.
In a preferred embodiment of the present invention, the base is further provided with a sealing ring at its outer periphery.
In a preferred embodiment of the present invention, a housing is provided outside the pull rod, the first screw rod and the second screw rod, and one end of the connecting rod is inserted into the housing to be connected with the first screw rod.
The utility model has the beneficial effects that:
the core column for the cold drawing process of the automobile engine pipeline provided by the utility model controls the cold drawing of the core column by matching the telescopic screw rod with the bearing, so that the aim of improving the product precision is fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a diagram of the structure of the product of the present invention.
Detailed Description
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The detailed structure of the present invention will be further described with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, a stem for use in an automotive engine pipe cold drawing process, comprises: a connecting rod 10, a stem head 20 provided at one end of the connecting rod 10, and a telescoping control mechanism 40 provided at the other end of the connecting rod.
A circle of extrusion table 21 is arranged on the circumference of the core column head 20, the extrusion table 21 extends from one end of the core column head 20 to the other end, and the radius of the extrusion table 21 is gradually reduced in the extending process, so that the core column head 20 is in a cone-shaped structure. The core column head 20 is inserted into the punch 30 from the outside, a horn-shaped front convex surface 31 is arranged on the punch 30, and the longitudinal position degree of the extrusion table 21 and the punch 30 is controlled, so that the gap between the front convex surface 31 and the extrusion table 21 is changed, and the inner diameter and the outer diameter of the pipe which is extruded by cold drawing of the core column head 20 and the punch 30 are controlled. When the rate of reduction of the inner radius of the extrusion table 21 in a straight unit becomes small, the inner diameter of the cold-drawn extruded pipe becomes small, and when the rate of reduction of the inner radius of the straight unit becomes large, the inner diameter of the cold-drawn extruded pipe becomes large.
The telescoping control mechanism 40 is composed of a housing 41, a bearing 47, a journal sleeve 48, a first screw 45, a second screw 46, a pull rod 44, a base 42 and a sealing ring 43. The housing 41 is provided outside all the above-mentioned parts.
A first screw inner screw hole is arranged in the first screw 45 along the axial direction thereof, a second screw inner screw hole is also arranged in the second screw 46 along the axial direction thereof, and a pull rod inner screw hole is arranged in the pull rod 44. One end of the second screw rod 46 is in threaded connection with the pull rod 44 through the inner threaded hole of the pull rod, and the other end of the second screw rod 46 is in threaded connection with the inner threaded hole of the first screw rod. After the connecting rod 10 passes through the shell 41, one end of the first screw rod 45 is axially arranged in the connecting rod 10, and the purpose of changing the longitudinal position degree of the core column head 20 is achieved by adjusting the extending lengths of the first screw rod 45 and the second screw rod 46. The pull rod 44 is mounted on the base 42, and the base 42 is provided with a sealing ring 43 on its periphery, whereby the base 42 and the sealing ring 43 are fixed to one end of the housing 41.
The end of the connecting rod 10 connected with the first screw rod 45 is also sleeved with a pair of bearings 47, and the bearings 47 enable the connecting rod to extend and retract in a stable state to avoid shaking. The connecting rod 10 and the side of the bearing 47 are also sleeved with journal sleeves 48, so that the sealing performance of the bearing 47 is enhanced.
Claims (6)
1. A stem for an automotive engine pipe cold drawing process, comprising:
the core column head is arranged at one end of the connecting rod and is a cone;
the extrusion table is arranged on the periphery of the core column head, extends from one end of the core column head to the other end of the core column head and gradually reduces the radius to form a cone structure of the core column head, and the inner diameter and the outer diameter of the extruded pipe fitting are controlled by controlling the clearance between the extrusion table and the male die;
the telescopic control mechanism is arranged at the other end of the connecting rod, and a first screw rod, a second screw rod and a pull rod are arranged in the telescopic control mechanism;
a first screw rod inner screw hole is formed in the first screw rod along the axial direction of the first screw rod, a second screw rod inner screw hole is also formed in the second screw rod along the axial direction of the second screw rod, and a pull rod inner screw hole is formed in the pull rod;
one end of the second screw is in threaded connection with the pull rod through the pull rod inner threaded hole, the other end of the second screw is in threaded connection with the first screw inner threaded hole, one end of the first screw is axially arranged in the connecting rod, and the purpose of changing the longitudinal position degree of the core column head is achieved by adjusting the extending length of the first screw and the second screw, so that the inner diameter and the outer diameter of the extruded pipe fitting are adjusted and controlled.
2. The core column for cold drawing process of automobile engine pipeline as claimed in claim 1, wherein a pair of bearings is sleeved on the other end of the connecting rod, and the bearings make the connecting rod extend and contract in a stable state to avoid shaking.
3. The core column for the cold drawing process of the automobile engine pipeline as claimed in claim 2, wherein a journal sleeve is further sleeved on the side portions of the connecting rod and the bearing, so that the sealing performance of the bearing is enhanced.
4. The stem for an automotive engine pipe cold drawing process of claim 1, further comprising a base disposed at the other end of said tie rod for providing support to the tie rod.
5. The stem for an automotive engine pipe cold drawing process of claim 4, wherein the outer periphery of the base is further provided with a sealing ring.
6. The core column for cold drawing process of automobile engine pipeline according to claim 1, wherein a shell is arranged outside the pull rod, the first screw rod and the second screw rod, and one end of the connecting rod is inserted into the shell to be connected with the first screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123371148.0U CN216965828U (en) | 2021-12-29 | 2021-12-29 | Core column for cold drawing process of automobile engine pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123371148.0U CN216965828U (en) | 2021-12-29 | 2021-12-29 | Core column for cold drawing process of automobile engine pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216965828U true CN216965828U (en) | 2022-07-15 |
Family
ID=82349999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123371148.0U Active CN216965828U (en) | 2021-12-29 | 2021-12-29 | Core column for cold drawing process of automobile engine pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216965828U (en) |
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2021
- 2021-12-29 CN CN202123371148.0U patent/CN216965828U/en active Active
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