CN202224674U - Floating boring tool - Google Patents
Floating boring tool Download PDFInfo
- Publication number
- CN202224674U CN202224674U CN2011202447030U CN201120244703U CN202224674U CN 202224674 U CN202224674 U CN 202224674U CN 2011202447030 U CN2011202447030 U CN 2011202447030U CN 201120244703 U CN201120244703 U CN 201120244703U CN 202224674 U CN202224674 U CN 202224674U
- Authority
- CN
- China
- Prior art keywords
- knife bar
- movable blades
- push rod
- floating boring
- blade
- 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.)
- Expired - Fee Related
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The utility model discloses a floating boring tool, which comprises a tool bar (1). A movable blade (2) is arranged at the front end of the tool bar and fixed by the aid of an ejector rod (3). The movable blade is fixed by the aid of the ejector rod in the tool bar in an abutted manner, so that the rotation radius of the tool bar cannot be increased, and the tool bar can conveniently enter a pore for machining. By the aid of the movable blade, nonstandard pores unable to be machined by a finished tool can be machined. When the floating boring tool is used, the movable blade rotates along with the tool bar, both cutting edges on two surfaces of the movable blade contact with pore walls to generate smaller vibration, and machined inner pores are better in surface quality. In addition, the blade is simpler in replacement, and the tool is simple in manufacture, so that auxiliary time is shortened, and the service life of the floating boring tool is long.
Description
Technical field
the utility model relates to a kind of floating boring tool, belongs to the machining tool technical field.
Background technology
In the processing of the hole of machine-building, regular meeting adopts boring cutter to carry out bore hole processing
, and the boring cutter that is used for bore hole is welded on the knife bar lower end, drives the boring cutter cutting workpiece through the knife bar rotation; But in process, after cutter was worn, the aperture after the processing can diminish, and does not meet processing request.Because present boring cutter is directly to be welded on the knife bar, processes so can only more renew cutter.In order to overcome above-mentioned defective, can boring cutter be arranged to movable blades, be fixed on the knife bar lower end with jackscrew.But in the processing aperture when being the aperture of φ 3～φ 6, because the aperture is less, that gives movable blades has fixedly brought great trouble, can only use the finished product cutter of standard.Tool specification is many, and the manufacturing cycle is long, has limited the application of the manufacture field of small-bore.Therefore but when aperture size is non-standard hole, do not have ready-made finished product cutter, can only adopt movable blades to process, must solve and process the fixation problem of movable blades that the aperture is the nonstandard aperture cutter for same of φ 3～φ 6.
Summary of the invention
The purpose of
the utility model is, a kind of floating boring tool is provided.Through solving the fixation problem of movable blades on the cutter of small-bore,, improve hole machining accuracy, efficient and reliability to satisfy the processing tasks of processing φ 3～φ 6 nonstandard apertures.
The technical scheme of the utility model
a kind of floating boring tool comprises knife bar, and the front end of knife bar is provided with movable blades, and movable blades is fixed through push rod.
In
aforementioned floating boring tool, said knife bar be shaped as the reducing bar, knife bar minor diameter one end is provided with and the vertically disposed blade installing hole of knife bar; Be provided with the reducing centre bore coaxial with knife bar in the knife bar, minor diameter one end of reducing centre bore is a unthreaded hole, and major diameter one end of reducing centre bore is a screwed hole.
In
aforementioned floating boring tool, being shaped as and the corresponding reducing bar of reducing centre bore of said push rod, an end of push rod minor diameter is a polished rod, and the large diameter end of push rod is a threaded rod, and threaded rod one end of push rod is provided with spin slot.
In
aforementioned floating boring tool; Said movable blades is installed in the blade installing hole of knife bar; The polished rod of push rod is through in the unthreaded hole of reducing centre bore, and the threaded rod of push rod is spun in the screwed hole of reducing centre bore, and the end and the movable blades of polished rod hold out against.
In
aforementioned floating boring tool, the cross sectional shape of said blade installing hole is corresponding with the cross sectional shape of movable blades.
In
aforementioned floating boring tool, said movable blades two ends are provided with blade, and the anterior angle α of blade and relief angle β are 10～15 °.
In
aforementioned floating boring tool, said movable blades two ends are provided with blade, and the anterior angle α of blade and relief angle β are 12 °.
compared with prior art, the utility model holds out against movable blades through the push rod in the knife bar fixing, can not increase the radius of turn of knife bar, can make things convenient for knife bar to get into processing small holes.Owing to adopt movable blades, the non-standard aperture that can the processed finished products cutter can't accomplish.In use, movable blades is along with knife bar rotates, and the two sides blade all contacts the vibration that produces with hole wall less, and it is better to process the bore area quality; In addition, blade exchange is fairly simple, and the cutter manufacturing is simple, thereby reduces non-cutting time, and the long service life of this floating boring tool.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of knife rest;
Fig. 3 is the structural representation of push rod;
Fig. 4 is the decomposing schematic representation of the utility model;
Fig. 5 is the structural representation of movable blades.
Being labeled as in
accompanying drawing: 1-knife bar, 2-movable blades, 3-push rod, 4-blade installing hole, 5-unthreaded hole, 6-screwed hole, 7-polished rod, 8-threaded rod, 9-spin slot, 10-blade.
The specific embodiment
are done further to specify to the utility model below in conjunction with accompanying drawing and embodiment.But not as any restriction foundation to the utility model.
embodiment.A kind of floating boring tool, as shown in Figure 1, comprise knife bar 1, the front end of knife bar is provided with movable blades 2, and movable blades is fixing through push rod 3.
said knife bar is as shown in Figure 2, knife bar 1 be shaped as the reducing bar, knife bar minor diameter one end is provided with and the vertically disposed blade installing hole 4 of knife bar; Be provided with the reducing centre bore coaxial with knife bar in the knife bar, minor diameter one end of reducing centre bore is a unthreaded hole 5, and major diameter one end of reducing centre bore is a screwed hole 6.
said push rod is as shown in Figure 3, being shaped as and the corresponding reducing bar of reducing centre bore of push rod 3, and an end of push rod minor diameter is a polished rod 7, and the large diameter end of push rod is a threaded rod 8, and threaded rod one end of push rod is provided with spin slot 9.
are as shown in Figure 4, and said movable blades 2 is installed in the blade installing hole 4 of knife bar, and the cross sectional shape of blade installing hole 4 is corresponding with the cross sectional shape of movable blades 2.The polished rod 7 of push rod 3 is through in the unthreaded hole 5 of reducing centre bore, and the threaded rod 8 of push rod 3 is spun in the screwed hole 6 of reducing centre bore, and the end of polished rod 7 and movable blades 2 hold out against.
movable blades is as shown in Figure 5, and movable blades 2 two ends are provided with blade 10, and the anterior angle α of blade and relief angle β are 10～15 °; The best angle of the anterior angle α of blade and relief angle β is 12 °.
The principle of
the utility model is that push rod is set in knife bar, through the push rod in the knife bar movable blades is fixed, and does not influence the outside dimension of knife bar, makes things convenient for knife bar to stretch into aperture and processes.
Claims (7)
1. a floating boring tool comprises knife bar (1), it is characterized in that: the front end of knife bar is provided with movable blades (2), and movable blades is fixing through push rod (3).
2. according to the said floating boring tool of claim 1, it is characterized in that: said knife bar (1) be shaped as the reducing bar, knife bar minor diameter one end is provided with and the vertically disposed blade installing hole of knife bar (4); Be provided with the reducing centre bore coaxial with knife bar in the knife bar, minor diameter one end of reducing centre bore is unthreaded hole (5), and major diameter one end of reducing centre bore is screwed hole (6).
3. according to the said floating boring tool of claim 1; It is characterized in that: being shaped as and the corresponding reducing bar of reducing centre bore of said push rod (3); One end of push rod minor diameter is polished rod (7), and the large diameter end of push rod is threaded rod (8), and threaded rod one end of push rod is provided with spin slot (9).
4. according to claim 2 or 3 said floating boring tools; It is characterized in that: said movable blades (2) is installed in the blade installing hole (4) of knife bar; The polished rod (7) of push rod (3) is through in the unthreaded hole (5) of reducing centre bore; The threaded rod (8) of push rod (3) is spun in the screwed hole (6) of reducing centre bore, and the end of polished rod (7) and movable blades (2) hold out against.
5. according to the said floating boring tool of claim 2, it is characterized in that: the cross sectional shape of said blade installing hole (4) is corresponding with the cross sectional shape of movable blades (2).
6. according to claim 1,2,3 or 5 said floating boring tools, it is characterized in that: said movable blades (2) two ends are provided with blade (10), and the anterior angle α of blade and relief angle β are 10～15 °.
7. according to the said floating boring tool of claim 6, it is characterized in that: said movable blades (2) two ends are provided with blade (10), and the anterior angle α of blade and relief angle β are 12 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202447030U CN202224674U (en) | 2011-07-12 | 2011-07-12 | Floating boring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202447030U CN202224674U (en) | 2011-07-12 | 2011-07-12 | Floating boring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202224674U true CN202224674U (en) | 2012-05-23 |
Family
ID=46075281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202447030U Expired - Fee Related CN202224674U (en) | 2011-07-12 | 2011-07-12 | Floating boring tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202224674U (en) |
-
2011
- 2011-07-12 CN CN2011202447030U patent/CN202224674U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20150712 |
|
| EXPY | Termination of patent right or utility model |