CN106140903A - A kind of new method of coreless rolling circularity - Google Patents
A kind of new method of coreless rolling circularity Download PDFInfo
- Publication number
- CN106140903A CN106140903A CN201610736922.8A CN201610736922A CN106140903A CN 106140903 A CN106140903 A CN 106140903A CN 201610736922 A CN201610736922 A CN 201610736922A CN 106140903 A CN106140903 A CN 106140903A
- Authority
- CN
- China
- Prior art keywords
- mould
- workpiece
- new method
- upper mold
- center
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
Abstract
The invention discloses the new method of a kind of coreless rolling circularity, it is characterised in that comprise the steps: that (1) uses mould A that workpiece is made " M " shape；(2) use mould B that workpiece is made semicircle；(3) use mould C to be crimped at workpiece two, make ellipse；(4) mould D shaping is used.The invention have the advantage that but roll up circle dimensional discrepancy fewer, endoporus out of roundness deviation is little, can meet the process requirements of various workpiece；Simple to operate, laborsaving.
Description
Technical field
The invention belongs to Machining Technology field, especially relate to a kind of coreless rolling circularity new method..
Background technology
Circular tube shaped part is widely used in the life of people, and circular tube shaped part is generally first bent to wave by flat base section bar
Shape, becomes pipe by wave-like shape bending the most again, and the pipe circularity bent out is poor, requires higher for circularity
Sophisticated product must carry out circularity correction, to improve the circularity of circular tube shaped part in pipe part circumference all directions.Existing skill
In art, when being processed circular tube shaped part producing, having core volume circle technology is first to be inserted in circular mandrel, then uses
Section bar is bent by mould, then the section bar after bending is extracted from mandrel, puts into that to carry out volume in next circle_curling die tool round so that it is
Cylindrical structure.So production efficiency is low, complex process, inadaptable batch production, and production cost is higher；Need simultaneously
Want manually to be extracted out from circular tube shaped part by mandrel, complex operation, need substantial amounts of human resources, increase production cost, and
And production efficiency is low, the low precision of the circular tube shaped part of production, intensity is low.Have in some workpiece inner wall and be covered with groove, internal diameter
Having tolerance, generally conventional way, the needs that internal diameter requires do looses core, and i.e. inserts one inside volume bowlder and meets internal diameter requirement
Plug, volume circle at the end of with strength plug is extracted out from product, plug resetting-mechanism driving force typically has: spring, cylinder,
Mould backhaul parts.This product is according to pulled core structure, and there are the following problems: 1. plug excessively elongated strength is inadequate；2. Core-pulling force
Excessive being difficult to solves；3. pulled core structure is complicated, and cost is high；4. loose core course of action time long inefficiency.
Summary of the invention
The present invention seeks to overcome background technology not enough, the technical scheme that the present invention provides is:
The new method of a kind of coreless rolling circularity, comprises the steps:
(1) use mould A that workpiece is made " M " shape；
(2) use mould B that workpiece is made semicircle；
(3) use mould C to be crimped at workpiece two, make ellipse；
(4) mould D shaping is used.
Further, described mould A includes that upper mold A and lower mold A, described upper mold A center are " M " shapes；Described lower mold A center
It it is protruding " M " shape；Upper mold A and lower mold A match, and workpiece is made " M " shape.
Further, described mould B includes upper mold B and lower mold B, and described upper mold B center is semi-circular recesses；Described mould
There is a projection at B center.
Further, the top of the mould B central protuberance described in step (2) is round.
The invention have the advantage that the dimensional discrepancy of volume circle is fewer, endoporus out of roundness deviation is little, can meet various workpiece
Process requirements；Simple to operate, laborsaving.
Accompanying drawing explanation
Fig. 1 mould A structural representation；
Fig. 2 mould B structure schematic diagram；
Fig. 3 mould C-structure schematic diagram；
Fig. 4 mould D structural representation.
Detailed description of the invention
Embodiment 1
The Q345 material of processing thickness 4.0, a length of the 38.1 of volume circle, 1.5 times of internal diameter 6.05, only material thickness,
And on inwall, it is covered with groove.Procedure of processing is:
(1) use mould A that workpiece is made " M " shape；
(2) use mould B that workpiece is made semicircle；
(3) use mould C to be crimped at workpiece two, make ellipse；
(4) mould D shaping is used.
Further, described mould A includes that upper mold A1 and lower mold A2, described upper mold A1 center are " M " shapes；Described lower mold A2
Center is protruding " M " shape；Upper mold A1 and lower mold A2 match, and workpiece is made " M " shape.
Further, described mould B includes upper mold B3 and lower mold B4, and described upper mold B3 center is semi-circular recesses；Described
There is a projection at mould B center.
Further, the top of the mould B central protuberance described in step (2) is round.
The invention have the advantage that the dimensional discrepancy of volume circle is fewer, endoporus out of roundness deviation is little, can meet various workpiece
Process requirements；Simple to operate, laborsaving.
The foregoing is only presently preferred embodiments of the present invention, it is impossible to be considered for limiting the present invention, all the present invention's
Any amendment, equivalent and the improvement etc. made in spirit and principle, should be included in the present invention patent covering scope it
In.
Claims (4)
1. the new method of a coreless rolling circularity, it is characterised in that comprise the steps:
(1) use mould A that workpiece is made " M " shape；
(2) use mould B that workpiece is made semicircle；
(3) use mould C to be crimped at workpiece two, make ellipse；
(4) mould D shaping is used.
A kind of new method of coreless rolling circularity, it is characterised in that described mould A include upper mold A and under
Mould A, described upper mold A center is " M " shape；Described lower mold A center is protruding " M " shape；Upper mold A and lower mold A match, by work
Part makes " M " shape.
A kind of new method of coreless rolling circularity, it is characterised in that described mould B include upper mold B and under
Mould B, described upper mold B center is semi-circular recesses；There is a projection at described mould B center.
The new method of a kind of coreless rolling circularity, it is characterised in that the mould B center described in step (2)
Protruding top is round.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736922.8A CN106140903A (en) | 2016-08-26 | 2016-08-26 | A kind of new method of coreless rolling circularity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610736922.8A CN106140903A (en) | 2016-08-26 | 2016-08-26 | A kind of new method of coreless rolling circularity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106140903A true CN106140903A (en) | 2016-11-23 |
Family
ID=57342371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610736922.8A Pending CN106140903A (en) | 2016-08-26 | 2016-08-26 | A kind of new method of coreless rolling circularity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106140903A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580666A (en) * | 2018-08-02 | 2018-09-28 | 安徽江淮汽车集团股份有限公司 | A kind of stamping parts crimping method and its mold |
| CN109290753A (en) * | 2018-11-29 | 2019-02-01 | 马鞍山市绿之友机械制造有限公司 | A kind of roll bending perforating needle and its processing mould group and processing method |
-
2016
- 2016-08-26 CN CN201610736922.8A patent/CN106140903A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580666A (en) * | 2018-08-02 | 2018-09-28 | 安徽江淮汽车集团股份有限公司 | A kind of stamping parts crimping method and its mold |
| CN109290753A (en) * | 2018-11-29 | 2019-02-01 | 马鞍山市绿之友机械制造有限公司 | A kind of roll bending perforating needle and its processing mould group and processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161123 |
|
| WD01 | Invention patent application deemed withdrawn after publication |