CN113000703B - Combined necking-in inversion spinning method - Google Patents
Combined necking-in inversion spinning method Download PDFInfo
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- CN113000703B CN113000703B CN202110219406.9A CN202110219406A CN113000703B CN 113000703 B CN113000703 B CN 113000703B CN 202110219406 A CN202110219406 A CN 202110219406A CN 113000703 B CN113000703 B CN 113000703B
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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
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
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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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
- B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
- B21D19/06—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers working inwardly
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a combined necking-in turning spinning method, which belongs to the technical field of spinning forming and comprises a feeding process, a workpiece clamping process, a workpiece heating process, a workpiece rotating process, a necking-in spinning process, a spinning-in turning process and an unloading process.
Description
Technical Field
The invention belongs to the technical field of spinning forming, and particularly relates to a combined necking-in spinning method for necking and turning-in of an end part of a workpiece.
Background
The spinning is to fix a flat or hollow blank on the die of a spinning machine, and press the blank with a spinning wheel or a driving rod while the blank rotates along with the main shaft of the machine to produce local plastic deformation. With the progress of the process and the requirements of machining and use of people, the shape requirement of parts machined by spinning is higher and higher, in the field of machining, the machining requirement of necking down the end part of a workpiece exists, and the operations of necking down, turning inside and the like are further required to be carried out on the end part of a metal workpiece so as to machine the workpiece with a double-layer annular pipeline, so that a combined necking-inside turning spinning method for necking down and turning inside of the end part of the workpiece is required to be provided.
Disclosure of Invention
The invention aims to overcome the technical problems that a spinning machine in the prior art cannot perform inward turning spinning after the end part of a metal workpiece is subjected to spinning necking, and the like, and provides a combined necking and inward turning spinning method for necking and inward turning of the end part of the workpiece, so that the utilization rate of materials is improved, and the quality of the workpiece is improved.
In order to solve the technical problem, the invention provides a combined necking-in turning-over spinning method, which comprises the following steps:
the method comprises the following steps: a feeding process, wherein the workpiece is placed at a feeding device, and is conveyed to a workpiece clamping device through the transmission action of a feeding plate;
step two: a workpiece clamping procedure, wherein the workpiece subjected to the feeding procedure in the first step enters a workpiece mounting channel of the main shaft, a push rod which is in contact with the workpiece is arranged in the workpiece mounting channel, a push rod driving mechanism drives the push rod to be in contact with the end part of the workpiece and pushes the workpiece out from an opening of the workpiece mounting channel, and a workpiece chuck clamps and positions the workpiece while pushing out;
step three: a workpiece heating procedure: heating the end part of the workpiece subjected to the workpiece clamping procedure in the second step by using a heating ring, wherein the heating time of the heating ring is 2-5 seconds, and heating the workpiece to 700-1200 ℃;
step four: a workpiece rotating procedure, wherein the workpiece subjected to the workpiece heating procedure in the third step is driven by a main shaft to rotate, and the rotating speed of the main shaft is 300-1000r/min;
step five: a necking spinning process, wherein a necking spinning driving mechanism drives a necking spinning wheel to rotate, the necking spinning wheel is in contact with the end part of a workpiece to spin, the outer edge of the end part of the workpiece extends axially, the necking spinning wheel is provided with an arc-shaped groove, and the rotating speed of the necking spinning wheel is 300-800r/min;
step six: spinning the workpiece after the four-step necking spinning process, wherein an inward-turning spinning driving mechanism drives an inward-turning spinning wheel to spin the workpiece, the inward-turning spinning wheel is driven by an oil cylinder to axially move towards the workpiece simultaneously in the rotating process, the outer edge of the end part of the workpiece extending axially is turned inwards, and the rotating speed of the inward-turning spinning wheel is 300-800r/min;
step seven: and in the unloading process, the workpiece subjected to the spinning and turning-in process is clamped out from a workpiece mounting channel in the workpiece clamping device through an unloading manipulator, and the workpiece is arranged and packaged.
As a further improvement measure of the invention, in the step four necking spinning process and the step five spinning inner-turning process, the necking spinning wheel and the inner-turning spinning wheel are arranged to synchronously rotate, a through hole is axially formed in the necking spinning wheel, the inner-turning spinning wheel is arranged in the through hole, the necking spinning wheel and the inner-turning spinning wheel are fixedly connected together through a fastener, and the inner-turning spinning driving mechanism drives the necking spinning wheel to rotate and simultaneously drives the inner-turning spinning wheel to rotate.
As a further improvement measure of the invention, one end of the inner overturning pressing wheel close to the workpiece clamping device is set to be conical, the other end of the inner overturning pressing wheel is set to be cylindrical, the conical end of the inner overturning pressing wheel is driven by the oil cylinder to be contacted with the end part of the workpiece after necking and spinning to perform flaring on the end part of the workpiece, then the oil cylinder continues to drive the inner overturning pressing wheel to move along the axial direction, so that the end part of the workpiece after necking is turned over towards the axis direction of the workpiece, and the inner layer of the workpiece is shaped.
As a further improvement measure of the invention, in the step four, a process of translating the necking spinning wheel is provided, the necking spinning wheel is mounted on the mounting plate, and the mounting plate is driven by the translation driving mechanism to move towards the workpiece clamping device, so that the necking spinning wheel is contacted with the end part of the workpiece.
As a further improvement measure of the invention, in the step three workpiece rotating procedure and the step four necking spinning procedure, the main shaft and the necking spinning wheel are set to rotate reversely.
As a further improvement measure of the invention, a workpiece sequencing process is arranged in the step I, and two adjacent workpieces are sequenced and blocked by the blocking blocks on the feeding plate.
Compared with the prior art, the invention has the beneficial effects that: 1. the invention adopts a spinning integrated forming process, the end part of one end of a workpiece is subjected to spinning necking by a necking spinning wheel with an arc-shaped groove, and the workpiece after necking is subjected to spinning inversion by an inversion spinning wheel, so that the processed workpiece with a double-layer annular pipeline is seamless-connected at the end part of the double-layer pipeline, the quality of the inner surface and the outer surface is good, no welding seam exists, and the appearance is attractive; 2. the spinning necking and spinning inversion of the end part of the workpiece are finished in the same spinning machine, so that the processing operation of multiple processes is avoided, the operation is simpler and more convenient, the working efficiency is improved, and the processing cost is reduced; 3. the workpiece of the double-layer annular pipeline produced by the invention has high concentricity and precision of the double-layer annular pipeline, and ensures the product quality of the workpiece.
Drawings
FIG. 1 is a flow chart of the present invention.
FIG. 2 is a cross-sectional view of a workpiece after completion of the necking-in spinning process of the present invention.
Detailed Description
The invention will be further explained with reference to the 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.
On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.
The combined necking-in spinning method shown in fig. 1 and 2 comprises the following steps:
firstly, the workpieces are placed at a feeding device, the workpieces are conveyed to a workpiece clamping device through the conveying action of a feeding plate, in order to avoid that a plurality of workpieces enter the workpiece clamping device simultaneously, two adjacent workpieces are sequenced and separated through a blocking block on the feeding plate, and the workpieces sequentially enter the workpiece clamping device.
After the workpiece enters the workpiece mounting channel of the main shaft, the push rod driving mechanism drives the push rod in the workpiece mounting channel to be in contact with the end part of the workpiece, the workpiece is ejected out from the opening of the workpiece mounting channel, and the workpiece chuck clamps and positions the workpiece while ejecting.
After the clamping and positioning are carried out through the heating ring, the end part of the workpiece ejected out by the push rod is heated, the heating time of the heating ring is 3 seconds, the workpiece is heated to 900 ℃, the strength of the end part of the workpiece is weakened under the action of high temperature, the subsequent spinning forming is convenient, and the heating ring is a high-frequency induction heating ring.
After the end part of the workpiece is heated, the main shaft driving mechanism drives the main shaft to rotate, the workpiece is driven by the main shaft to rotate, and the rotating speed of the main shaft is 600r/min.
The necking spinning wheel is installed on the installation plate, the installation plate is driven to move towards the direction of the workpiece clamping device through the translation driving mechanism, the necking spinning wheel is made to be in contact with the end portion of the workpiece, the necking spinning wheel is arranged to be an arc-shaped groove, then the necking spinning driving mechanism drives the necking spinning wheel to rotate, the rotating speed of the necking spinning wheel is 600r/min, and the necking spinning wheel is in contact with the end portion of the workpiece for spinning. In the spinning process, the end part of one end of the workpiece is contacted with the cambered surface at the bottom of the cambered groove, the outer edge of the end part of the workpiece extends axially to form a semicircular track, the diameter of the semicircular track is reduced, and the spinning necking of the workpiece is realized.
After the workpiece is spun and necked, the inward turning spinning driving mechanism can drive the inward turning spinning wheel to spin the workpiece spun and necked, one end of the inward turning spinning wheel close to the workpiece clamping device is conical, the other end of the inward turning spinning wheel is cylindrical, the inward turning spinning wheel is driven by an oil cylinder to axially move towards the workpiece simultaneously in the rotating process, so that the conical end of the inward turning spinning wheel is contacted with the end part of the workpiece spun and the end part of the workpiece is shrunk towards the axis direction of the workpiece to form a semicircular track, the diameter of the necked end part is reduced, the conical inward turning spinning wheel is similar to the diameter of the end part of the workpiece after necking, the end part of the workpiece after being reduced is conveniently contacted and flared, a semicircular track formed after the end part of the workpiece is reduced is firstly folded towards the axis direction of the workpiece, then the oil cylinder continues to drive the inner overturning pressure wheel to move along the axial direction, the end part of the workpiece after being reduced is further extended and folded towards the axis direction of the workpiece, the inner layer of the workpiece is shaped and forms a cylindrical pipeline, the finally processed workpiece is provided with a double-layer annular pipeline, the axis of the double-layer annular pipeline is the same, the diameter of the inner annular pipeline is smaller than that of the outer annular pipeline, and the joint of the end parts of the double-layer pipeline is connected in a seamless mode.
In order to improve the working efficiency and the precision of workpiece spinning, the necking spinning wheel and the inner turning pressing wheel are arranged to synchronously rotate, a through hole is axially formed in the necking spinning wheel, the inner turning pressing wheel is arranged in the through hole, the necking spinning wheel and the inner turning pressing wheel are fixedly connected together through a fastener, and the inner turning spinning driving mechanism drives the necking spinning wheel to rotate and simultaneously drives the inner turning pressing wheel to rotate. On one hand, the workpiece necking and spinning are finished in the same spinning machine, the working efficiency is improved, on the other hand, the inner overturning pressing wheel synchronously rotates while the necking spinning wheel rotates, the rotating speed of the inner overturning pressing wheel is the same as that of the necking spinning wheel, and the processing quality of the workpiece spinning necking and the inner overturning spinning is guaranteed.
In order to realize the spinning of the workpiece, the main shaft and the necking spinning wheel are set to rotate reversely, because the necking spinning wheel and the inner tumbling wheel rotate synchronously, the main shaft and the inner tumbling wheel also rotate reversely, namely, the workpiece, the necking spinning wheel and the inner tumbling wheel rotate reversely.
The workpiece after the spinning inversion process is clamped out of the workpiece mounting channel in the workpiece clamping device through the unloading manipulator, and is arranged and packaged, and automatic production is adopted, so that the product quality of the workpiece is improved, and the working efficiency is improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications and improvements may be made without departing from the present invention, and these should be construed as falling within the scope of the present invention.
Claims (4)
1. The combined necking-in inversion spinning method is characterized by comprising the following steps:
the method comprises the following steps: a feeding process, wherein the workpiece is placed at a feeding device, and is conveyed to a workpiece clamping device through the transmission action of a feeding plate;
step two: a workpiece clamping procedure, wherein the workpiece subjected to the feeding procedure in the first step enters a workpiece mounting channel of the main shaft, a push rod in contact with the workpiece is arranged in the workpiece mounting channel, a push rod driving mechanism drives the push rod to be in contact with the end part of the workpiece and pushes the workpiece out from the opening of the workpiece mounting channel, and a workpiece chuck clamps and positions the workpiece while pushing out;
step three: a workpiece heating procedure, namely heating the end part of the workpiece subjected to the workpiece clamping procedure in the second step through a heating ring, wherein the heating time of the heating ring is 2-5 seconds, and heating the workpiece to 700-1200 ℃;
step four: a workpiece rotating procedure, wherein the workpiece subjected to the workpiece heating procedure in the third step is driven by a main shaft to rotate, and the rotating speed of the main shaft is 300-1000r/min;
step five: a necking spinning process, wherein a necking spinning driving mechanism drives a necking spinning wheel to rotate, the necking spinning wheel is in contact with the end part of the workpiece to spin, the outer edge of the end part of the workpiece extends axially, the necking spinning wheel is provided with an arc-shaped groove, and the rotating speed of the necking spinning wheel is 300-800r/min;
step six: spinning the workpiece after the four-step necking spinning process, wherein an inward-turning spinning driving mechanism drives an inward-turning spinning wheel to spin the workpiece, the inward-turning spinning wheel is driven by an oil cylinder to axially move towards the workpiece simultaneously in the rotating process, the outer edge of the end part of the workpiece extending axially is turned inwards, and the rotating speed of the inward-turning spinning wheel is 300-800r/min;
step seven: the unloading process is that the workpiece after the spinning and turning-in process is clamped out from a workpiece mounting channel in the workpiece clamping device through an unloading manipulator, and then the workpiece is arranged and packaged;
in the fifth necking spinning process and the sixth spinning inward-turning process, the necking spinning wheel and the inward-turning wheel are arranged to synchronously rotate, a through hole is axially formed in the necking spinning wheel, the inward-turning wheel is arranged in the through hole, the necking spinning wheel and the inward-turning wheel are fixedly connected together through a fastener, and the necking spinning driving mechanism drives the necking spinning wheel to rotate and simultaneously drives the inward-turning wheel to rotate;
one end of the inner turning pressure wheel, which is close to the workpiece clamping device, is set to be conical, the other end of the inner turning pressure wheel is set to be cylindrical, the conical end of the inner turning pressure wheel is driven by the oil cylinder to be in contact with the end part of the workpiece after necking and spinning, flaring is carried out on the end part of the workpiece, then the oil cylinder continues to drive the inner turning pressure wheel to move axially, the end part of the workpiece after necking is turned over towards the axis direction of the workpiece, and the inner layer of the workpiece is shaped.
2. The combined type necking-in turning-spinning method according to claim 1, wherein a necking-spinning wheel translation process is adopted in the five-step necking-spinning process, the necking-spinning wheel is mounted on a mounting plate, and a translation driving mechanism drives the mounting plate to move towards a workpiece clamping device, so that the necking-spinning wheel is in contact with the end part of a workpiece.
3. The combined type necking-in spinning method according to claim 1, wherein in the step four workpiece rotating process and the step five necking spinning process, the main shaft and the necking spinning wheel are set to rotate in opposite directions.
4. The combined type necking-in spinning method according to claim 1, wherein a workpiece sequencing procedure is provided in the first step, and two adjacent workpieces are sequenced and blocked by the blocking blocks on the feeding plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110219406.9A CN113000703B (en) | 2021-02-26 | 2021-02-26 | Combined necking-in inversion spinning method |
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| CN202110219406.9A CN113000703B (en) | 2021-02-26 | 2021-02-26 | Combined necking-in inversion spinning method |
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| CN113000703A CN113000703A (en) | 2021-06-22 |
| CN113000703B true CN113000703B (en) | 2023-01-31 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107636A1 (en) * | 2016-12-12 | 2018-06-21 | 南通福乐达汽车配件有限公司 | 工-shaped silicone oil damper housing and integral spin forming method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639308B (en) * | 2013-12-10 | 2015-04-22 | 合肥亚辰机械制造有限公司 | Necking shaping technology for inner drum of washing machine |
| CN104084467B (en) * | 2014-06-30 | 2016-03-23 | 广州海鸥卫浴用品股份有限公司 | A kind of tubing oral area spinning hemmer |
| CN110242797B (en) * | 2019-05-29 | 2021-05-18 | 远军热能动力科技有限公司 | Connector for metal pipe connection |
| CN110076244A (en) * | 2019-05-29 | 2019-08-02 | 远军热能动力科技有限公司 | A kind of interior necking die |
| CN110523867A (en) * | 2019-08-31 | 2019-12-03 | 远军热能动力科技有限公司 | A kind of outer tang processing method of metal tube |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018107636A1 (en) * | 2016-12-12 | 2018-06-21 | 南通福乐达汽车配件有限公司 | 工-shaped silicone oil damper housing and integral spin forming method therefor |
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Address after: 318014 2-101 CRRC motor supporting industrial park, No. 1, Xinqi Road, economic development zone, Xiage Town, Xianju County, Taizhou City, Zhejiang Province Applicant after: Zhejiang Boxiang Spinning Machine Tool Co.,Ltd. Address before: 318014 no.2001-9, east section of Kaifa Avenue, Sanjia street, Jiaojiang District, Taizhou City, Zhejiang Province Applicant before: Taizhou Boxiang spinning machine Co.,Ltd. |
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