CN102009194A - Tool shell with clearance on the upper portion of the inner wall surface of center aperture - Google Patents
Tool shell with clearance on the upper portion of the inner wall surface of center aperture Download PDFInfo
- Publication number
- CN102009194A CN102009194A CN 201010196963 CN201010196963A CN102009194A CN 102009194 A CN102009194 A CN 102009194A CN 201010196963 CN201010196963 CN 201010196963 CN 201010196963 A CN201010196963 A CN 201010196963A CN 102009194 A CN102009194 A CN 102009194A
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- China
- Prior art keywords
- clearance
- shell
- cutter
- tool
- center aperture
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Abstract
The present invention relates to a tool shell with a clearance on the upper portion of the inner wall surface of a center aperture. The tool shell is characterized that a center aperture is arranged at the center of the tool shell, a clearance is provided on the inner wall surface of the center aperture at a position close to the end surface contacted with a tool shaft, and a step with a relatively greater diameter is formed, wherein the diameter of the clearance is bigger than the diameters of other parts of the center aperture. According to the invention, the clearance is arranged at the center aperture where the tool shaft is installed, namely the step is installed at the transition position. When installing the tool shaft, the clearance and the relatively greater diameter play an initial guiding role, which allows the installation of the tool shaft to be very convenient. Besides, when replacing the tool shell after use, owing to the existence of the clearance, it does not matter that the expansion of the tool shaft is caused by heat, and the tool shaft can be easily installed, simultaneously the clearance also protects the tool shaft and the tool shell.
Description
Technical field
The present invention relates to a kind of cutter shell of mounting cutter, specifically relate to the cutter shell of a kind of center bore inner wall face top band empty avoiding, belong to the Machining Technology field.
Background technology
In machining, cutter is necessary parts, so installing and fixing of cutter also is a very important structure.Cutter is installed on the cutter shell, and tail end inserts in the centre bore of cutter shell, fixedly mounts again.Be installed as tight fit between present cutter and the cutter shell, the tolerance between cutter shaft external diameter and the cutter shell center bore inner wall only is between the 0.006-0.013mm, very little of assemblage gap, difficulty relatively when mounted.And the installation end face of cutter shell is an integral planar, that is to say that installing between end face and the centre bore be the right angle transition, the diameter of centre bore is unanimous between the higher and lower levels, upper end at centre bore does not have chamfering, and as shown in Figure 1, Fig. 1 is the structural representation of cutter shell of the prior art.Because therefore very little of tolerance so just cause when cutter is inserted centre bore, difficulty very also injures center bore inner wall easily, causes installing more difficult.After use, cutter shaft can expanded by heating, and more the tool changing shell is more difficult or can't install, and often will strike with hammer, damages all bigger to cutter shaft and cutter shell.
Summary of the invention
Be to solve the deficiencies in the prior art, the object of the present invention is to provide a kind of internal face top of the centre bore at the cutter shell to be provided with the cutter shell of empty avoiding, be convenient to the installation of cutter shaft, and reserve the expansion space, prevent to install behind the expanded by heating.
For achieving the above object, the present invention is achieved by the following technical solutions:
The cutter shell of a kind of center bore inner wall face top band empty avoiding, it is characterized in that being provided with centre bore at the center of described cutter shell, on the center bore inner wall face near being provided with empty avoiding with the contacted end of cutter shaft, form the step that diameter is big slightly, the diameter of empty avoiding part is greater than the diameter of centre bore remainder.
The invention has the beneficial effects as follows: the present invention partly is provided with empty avoiding at the centre bore that the cutter shaft part is installed, just step is set at transition position, like this when cutter shaft is installed, because the existence of empty avoiding is arranged, and diameter is also bigger, just can play the effect of guiding at the beginning of, make that the installation cutter shaft is very convenient.In addition, because the existence of empty avoiding is arranged, more during the tool changing shell, even cutter shaft has an expanded by heating, also it doesn't matter, also can be relatively easy to install, and also protected cutter shaft and cutter shell simultaneously after use.
Description of drawings
Fig. 1 is the structural representation of cutter shell of the prior art;
Fig. 2 is the structural representation of the cutter shell among the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is done concrete introduction.
Fig. 2 is the structural representation of the cutter shell among the present invention.
As shown in the figure, 1 is the cutter shell among the figure, and 2 is centre bore, and 3 are empty avoiding.The centre of cutter shell 1 of the present invention is provided with centre bore 2, is used to install cutter shaft.Centre bore 2 fit tolerances general and cutter shaft only are between the 0.006-0.013mm, be tight fit, when mounted, for the ease of successfully cutter shaft being inserted in the centre bore 2, top at the internal face of centre bore 2, near being provided with empty avoiding 3 with the contacted end of cutter shaft, just the transition position at centre bore 2 and end face is provided with step, the diameter of empty avoiding 3 parts will be a bit larger tham the diameter of centre bore remainder, like this when installing, empty avoiding 3 can be played at the beginning of one the effect of guiding, even tight fit not also can successfully be inserted cutter shaft in the centre bore 2.After use, certain expanded by heating can take place in cutter shaft, but because the existence of empty avoiding 3 is arranged, cutter shaft still can insert in the centre bore 2 easily, and does not need to use the instrument of hammer, hammer and so on, has also protected cutter shaft and cutter shell, has prevented damage.
The foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.
Claims (1)
1. the cutter shell of a center bore inner wall face top band empty avoiding, it is characterized in that being provided with centre bore at the center of described cutter shell, on the center bore inner wall face near being provided with empty avoiding with the contacted end of cutter shaft, form the step that diameter is big slightly, the diameter of empty avoiding part is greater than the diameter of centre bore remainder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010196963 CN102009194A (en) | 2010-06-09 | 2010-06-09 | Tool shell with clearance on the upper portion of the inner wall surface of center aperture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010196963 CN102009194A (en) | 2010-06-09 | 2010-06-09 | Tool shell with clearance on the upper portion of the inner wall surface of center aperture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102009194A true CN102009194A (en) | 2011-04-13 |
Family
ID=43839625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010196963 Pending CN102009194A (en) | 2010-06-09 | 2010-06-09 | Tool shell with clearance on the upper portion of the inner wall surface of center aperture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102009194A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5720583A (en) * | 1994-04-01 | 1998-02-24 | Walter Ag | Cutting bit, in particular indexable cutting bit |
| US5899642A (en) * | 1996-09-27 | 1999-05-04 | Seco Tools Ab | Milling cutter and method of assembly |
| CN1966191A (en) * | 2005-11-16 | 2007-05-23 | 张新添 | Quick-changing high-speed boring knife without need of dynamic balance calibration |
| CN200970637Y (en) * | 2006-10-28 | 2007-11-07 | 东方电气集团东方汽轮机有限公司 | Step round hole horing/scraping tool |
| CN101076418A (en) * | 2004-09-07 | 2007-11-21 | 钴碳化钨硬质合金公司 | Tool holder and cutting insert for tool holder assembly |
| CN201735818U (en) * | 2010-06-09 | 2011-02-09 | 勋龙精密模具(昆山)有限公司 | Cutter shell with clearance equipped at upper part of inner wall of central hole |
-
2010
- 2010-06-09 CN CN 201010196963 patent/CN102009194A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5720583A (en) * | 1994-04-01 | 1998-02-24 | Walter Ag | Cutting bit, in particular indexable cutting bit |
| US5899642A (en) * | 1996-09-27 | 1999-05-04 | Seco Tools Ab | Milling cutter and method of assembly |
| CN101076418A (en) * | 2004-09-07 | 2007-11-21 | 钴碳化钨硬质合金公司 | Tool holder and cutting insert for tool holder assembly |
| CN1966191A (en) * | 2005-11-16 | 2007-05-23 | 张新添 | Quick-changing high-speed boring knife without need of dynamic balance calibration |
| CN200970637Y (en) * | 2006-10-28 | 2007-11-07 | 东方电气集团东方汽轮机有限公司 | Step round hole horing/scraping tool |
| CN201735818U (en) * | 2010-06-09 | 2011-02-09 | 勋龙精密模具(昆山)有限公司 | Cutter shell with clearance equipped at upper part of inner wall of central hole |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110413 |