CN110549072A - Machining method for cutting off hollow workpiece - Google Patents
Machining method for cutting off hollow workpiece Download PDFInfo
- Publication number
- CN110549072A CN110549072A CN201910928393.5A CN201910928393A CN110549072A CN 110549072 A CN110549072 A CN 110549072A CN 201910928393 A CN201910928393 A CN 201910928393A CN 110549072 A CN110549072 A CN 110549072A
- Authority
- CN
- China
- Prior art keywords
- cutting
- cutter
- hollow workpiece
- inner groove
- wall thickness
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Knives (AREA)
Abstract
The invention discloses a processing method for cutting a hollow workpiece, which comprises the steps of extending an inner groove cutter into an inner hole of the hollow workpiece before cutting the hollow workpiece by the cutting cutter, turning an inner groove from inside to outside at a cutting position to thin the wall thickness of the cutting position, enabling the size of the bottom of the inner groove to be within a range capable of being cut by the cutting cutter, and finally cutting the hollow workpiece by the cutting cutter from outside to inside at the cutting position. The sum of the extension length of the cutter head of the cutting-off cutter and the groove depth of the inner groove is larger than the wall thickness of the hollow workpiece. The invention adopts the internal and external matching cutting method for the hollow workpiece, effectively solves the cutting problem of the hollow workpiece with the wall thickness larger than the extension length of the cutter head of the cutting-off cutter, ensures that the extension length of the cutter head of the cutting-off cutter can be controlled in a reasonable range, and has more ideal cutting-off effect through production and application.
Description
Technical Field
The invention relates to a processing method for cutting off a hollow workpiece, and belongs to the technical field of machining.
Background
In machining, a hollow large-diameter workpiece is often cut, when the workpiece is cut, the wall thickness of the workpiece is required to be smaller than the extension length of a cutter head of a cutting cutter, but the wall thickness is sometimes larger than the extension length of the cutter head of the cutting cutter, and for the hollow workpiece to be cut, the workpiece is generally cut by linear cutting after machining and forming or is cut according to a single piece (clamping is considered in the case, the cutting length is lengthened according to needs, and the excess length is removed by equipment subsequently), so that time and material are wasted, and the production cost is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the processing method for cutting off the hollow workpiece, which is convenient to operate, saves time and labor and reduces the cost, so as to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: before the hollow workpiece is cut by the cutting knife, an inner groove knife is firstly extended into an inner hole of the hollow workpiece, the inner groove is turned from inside to outside at the cutting position, the wall thickness of the cutting position is thinned, the size of the bottom of the inner groove is in the range which can be cut by the cutting knife, and finally the hollow workpiece is cut by the cutting knife from outside to inside at the cutting position.
Further, the sum of the extension length of the cutter head of the cutting-off cutter and the groove depth of the inner groove is larger than the wall thickness of the hollow workpiece.
Due to the adoption of the technical scheme, the invention has the following advantages: the invention adopts the internal and external matching cutting method for the hollow workpiece, effectively solves the cutting problem of the hollow workpiece with the wall thickness larger than the extension length of the cutter head of the cutting-off cutter, ensures that the extension length of the cutter head of the cutting-off cutter can be controlled in a reasonable range, and has more ideal cutting-off effect through production and application.
Drawings
FIG. 1 is a schematic structural view of an inner groove cutter used for machining an inner groove;
Fig. 2 is a schematic view of a structure of a hollow workpiece cut by a cutter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention comprises the following steps: referring to fig. 1 and 2, before the hollow workpiece is cut by the cutting knife, the inner groove knife extends into an inner hole of the hollow workpiece, an inner groove is turned from inside to outside at the cut part, the wall thickness of the cut part is thinned, the size of the bottom of the inner groove is within the range which can be cut by the cutting knife, and finally the hollow workpiece is cut by the cutting knife from outside to inside at the cut part. The sum of the extension length of the cutter head of the cutting-off cutter and the groove depth of the inner groove is larger than the wall thickness of the hollow workpiece.
in conclusion, the invention adopts the internal and external matching cutting method for the hollow workpiece, effectively solves the cutting problem of the hollow workpiece with the wall thickness larger than the extension length of the cutter head of the cutting-off cutter, ensures that the extension length of the cutter head of the cutting-off cutter can be controlled in a reasonable range, and has ideal cutting-off effect through production and application.
Claims (2)
1. A processing method for cutting off a hollow workpiece is characterized in that: before the hollow workpiece is cut by the cutting knife, the inner groove knife extends into an inner hole of the hollow workpiece, the inner groove is turned from inside to outside at the cutting position, the wall thickness of the cutting position is thinned, the size of the bottom of the inner groove is in the range capable of being cut by the cutting knife, and finally the hollow workpiece is cut by the cutting knife from outside to inside at the cutting position.
2. The machining method for cutting off a hollow workpiece according to claim 1, characterized in that: the sum of the extension length of the cutter head of the cutting-off cutter and the groove depth of the inner groove is larger than the wall thickness of the hollow workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928393.5A CN110549072A (en) | 2019-09-28 | 2019-09-28 | Machining method for cutting off hollow workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928393.5A CN110549072A (en) | 2019-09-28 | 2019-09-28 | Machining method for cutting off hollow workpiece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110549072A true CN110549072A (en) | 2019-12-10 |
Family
ID=68741865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910928393.5A Pending CN110549072A (en) | 2019-09-28 | 2019-09-28 | Machining method for cutting off hollow workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110549072A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4063841A (en) * | 1976-07-08 | 1977-12-20 | Posa-Cut Corporation | Indexable insert for grooving tools |
| CN1785562A (en) * | 2005-11-30 | 2006-06-14 | 美的集团有限公司 | Internal cutting copper pipe tailing processing clamp and processing method thereof |
| CN101786126A (en) * | 2010-03-23 | 2010-07-28 | 刘江 | Manufacturing method of thin-wall metal cylinder body |
| CN102105247A (en) * | 2008-07-25 | 2011-06-22 | 株式会社Ihi | Method of cutting thin-walled member |
| CN103447833A (en) * | 2013-08-12 | 2013-12-18 | 重庆江增船舶重工有限公司 | PTFE (polytetrafluoroethylene) plastic rotating sleeve machining method |
| CN105992667A (en) * | 2014-04-15 | 2016-10-05 | H&T马尔斯贝格有限责任两合公司 | Cutting cylindrical hollow articles |
-
2019
- 2019-09-28 CN CN201910928393.5A patent/CN110549072A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4063841A (en) * | 1976-07-08 | 1977-12-20 | Posa-Cut Corporation | Indexable insert for grooving tools |
| CN1785562A (en) * | 2005-11-30 | 2006-06-14 | 美的集团有限公司 | Internal cutting copper pipe tailing processing clamp and processing method thereof |
| CN102105247A (en) * | 2008-07-25 | 2011-06-22 | 株式会社Ihi | Method of cutting thin-walled member |
| CN101786126A (en) * | 2010-03-23 | 2010-07-28 | 刘江 | Manufacturing method of thin-wall metal cylinder body |
| CN103447833A (en) * | 2013-08-12 | 2013-12-18 | 重庆江增船舶重工有限公司 | PTFE (polytetrafluoroethylene) plastic rotating sleeve machining method |
| CN105992667A (en) * | 2014-04-15 | 2016-10-05 | H&T马尔斯贝格有限责任两合公司 | Cutting cylindrical hollow articles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |
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| RJ01 | Rejection of invention patent application after publication |