CN103231083A - Special-shaped boring cutter bar suitable for small-bore valve seat bores of valve - Google Patents
Special-shaped boring cutter bar suitable for small-bore valve seat bores of valve Download PDFInfo
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- CN103231083A CN103231083A CN2013101249996A CN201310124999A CN103231083A CN 103231083 A CN103231083 A CN 103231083A CN 2013101249996 A CN2013101249996 A CN 2013101249996A CN 201310124999 A CN201310124999 A CN 201310124999A CN 103231083 A CN103231083 A CN 103231083A
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Abstract
The invention provides a special-shaped boring cutter bar suitable for small-bore valve seat bores of a valve and aims at solving the problem that the size of a cutter bar is restricted due to the limited space during the processing of small-bore valve seats (the bore of the valve seats is between 25 mm to 500 mm). If the cutter bar is selected to be a thin cylinder type with allowance for processing the valve seat bores reserved, the cutter bar is overlong, the self weight of the cutter bar causes the cutter bar to droop so that the point of a cutter cannot achieve centration; and if the cutter bar is selected to be a cylinder type with a size almost identical with that of flow passage holes, every time the cutter is fed, a machine is needed to stop so as to adjust the amount of feed, thus the processing efficiency is severely affected. The special-shaped boring cutter bar suitable for the small-bore valve seat bores of the valve includes a cutter bar clamping portion which is connected with the special-shaped cutter bar, the free end of the special-shaped cutter bar is provided with a cutter amounting hole, the shape of the cross section of the special-shaped cutter bar is formed by the intersection of two identical arcs, the diameter of each of the arcs is the diameter of an access opening of a valve to be processed, and the eccentric distance of each of the arcs is 1/2 to 1/10 the diameter of the access opening of the valve to be processed. The special-shaped boring cutter bar suitable for the small-bore valve seat bores of the valve is suitable for the processing of the small-bore valve seat bores of the valve.
Description
Technical field:
The present invention relates to a kind of special-shaped boring cutter bar, especially a kind of special-shaped boring cutter bar that is applicable to the smaller diameter valve valve seat orifice.
Background technology:
Valve be installed on the various pipelines pressure that is used for the control fluid, flow, and flowing to, and possess following performance: sealing property, strength character, adjusting function, performance and trafficability performance.The valve seat orifice of valve body does not bring out at the blank state, need come machining by boring cutter bar.The bore hole knife bar is of a great variety, and structure differs from one another, but limited owing to the space when processing small-bore (bore is at 25mm-500mm) valve seat, has limited the size of knife bar.If knife bar is selected the thin column type that leaves processing valve seat orifice surplus for use, then knife bar is long, and deadweight causes that knife bar is sagging, point of a knife can't centering, if knife bar is selected for use and the similar thick column type in runner hole, then each feed adjusting depth of cut of all will stopping has a strong impact on working (machining) efficiency.
Summary of the invention:
The objective of the invention is provides a kind of special-shaped boring cutter bar that is applicable to the smaller diameter valve valve seat orifice at the problem of above-mentioned existence, can avoid knife bar because conducting oneself with dignity sagging or flexural deformation under the effect of cutting force.
Above-mentioned purpose realizes by following technical scheme:
Be applicable to the special-shaped boring cutter bar of smaller diameter valve valve seat orifice, comprising that knife bar adds holds the position, described knife bar adds to be held the position and connects special-shaped knife bar, the free end of described special-shaped knife bar is provided with the dress tool bore, the shape of the cross section of described special-shaped knife bar is that two sections identical circular arcs cross and form, the diameter of every section circular arc is the diameter of the access opening of valve to be processed, and the eccentric throw of every section circular arc is the 1/2-1/10 of the access opening diameter of valve to be processed.
Beneficial effect:
The present invention since adopt two sections identical circular arcs to cross to form thick up and down, the special-shaped knife bar that the left and right sides is narrow, can guarantee that knife bar also has the strongest rigidity and inertia distance when having the lightest weight, prevented knife bar because conducting oneself with dignity sagging or flexural deformation under the effect of cutting force.
Description of drawings:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is working state schematic representation of the present invention.
Among the figure: 1, knife bar adds and holds the position; 2, special-shaped knife bar; 3, dress tool bore; 4, the access opening of valve to be processed.
The specific embodiment:
Embodiment 1:
As Figure 1-3: the special-shaped boring cutter bar that is applicable to the smaller diameter valve valve seat orifice of the present invention, comprising that knife bar adds holds position 1, described knife bar adds to be held the position and connects special-shaped knife bar 2, the free end of described special-shaped knife bar is provided with dress tool bore 3, the shape of the cross section of described special-shaped knife bar is that two sections identical circular arcs cross and form, the diameter D of every section circular arc is the diameter of the access opening 4 of valve to be processed, and the eccentric throw α of every section circular arc is the 1/2-1/10 of the access opening diameter of valve to be processed.
Directly cutting tool is contained on the knife bar before processing, mixes up the position, the side shaft that special-shaped knife bar can guarantee pasting the valve flowing channel hole on the right side of knife bar leaves the gap to feeding to lathe tool, guarantees that point of a knife is not bruised.Radially feed begins cutting when arriving the valve seat orifice position, under numerical control program or manual operations the order cutting until the valve seat orifice moulding, this be the left side of special-shaped knife bar just near the inside in valve flowing channel hole, can not produce and interfere or collision.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-described embodiment, also comprises by above technical characterictic being equal to the technical scheme that replacement is formed.Unaccomplished matter of the present invention belongs to those skilled in the art's common practise.
Claims (1)
1. special-shaped boring cutter bar that is applicable to the smaller diameter valve valve seat orifice, comprising that knife bar adds holds the position, described knife bar adds to be held the position and connects special-shaped knife bar, the free end of described special-shaped knife bar is provided with the dress tool bore, it is characterized in that: the shape of the cross section of described special-shaped knife bar is that two sections identical circular arcs cross and form, the diameter of every section circular arc is the diameter of the access opening of valve to be processed, and the eccentric throw of every section circular arc is the 1/2-1/10 of the access opening diameter of valve to be processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101249996A CN103231083A (en) | 2013-04-12 | 2013-04-12 | Special-shaped boring cutter bar suitable for small-bore valve seat bores of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101249996A CN103231083A (en) | 2013-04-12 | 2013-04-12 | Special-shaped boring cutter bar suitable for small-bore valve seat bores of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103231083A true CN103231083A (en) | 2013-08-07 |
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ID=48879190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101249996A Pending CN103231083A (en) | 2013-04-12 | 2013-04-12 | Special-shaped boring cutter bar suitable for small-bore valve seat bores of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103231083A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690320A (en) * | 2015-04-02 | 2015-06-10 | 植健 | Novel rigid cutter bar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004283996A (en) * | 2003-03-25 | 2004-10-14 | Fuji Heavy Ind Ltd | Boring bar |
| CN200954552Y (en) * | 2006-09-22 | 2007-10-03 | 中国石油化工股份有限公司 | Anticollision boring turning-cutter |
| EP1918049B1 (en) * | 2006-10-30 | 2012-10-17 | Wieland Anlagentechnik GmbH | Method for boring workpieces with a machine |
| CN202824709U (en) * | 2012-10-28 | 2013-03-27 | 温州大统活塞水泵有限公司 | Eccentric-type fine-adjustable boring tool bar |
-
2013
- 2013-04-12 CN CN2013101249996A patent/CN103231083A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004283996A (en) * | 2003-03-25 | 2004-10-14 | Fuji Heavy Ind Ltd | Boring bar |
| CN200954552Y (en) * | 2006-09-22 | 2007-10-03 | 中国石油化工股份有限公司 | Anticollision boring turning-cutter |
| EP1918049B1 (en) * | 2006-10-30 | 2012-10-17 | Wieland Anlagentechnik GmbH | Method for boring workpieces with a machine |
| CN202824709U (en) * | 2012-10-28 | 2013-03-27 | 温州大统活塞水泵有限公司 | Eccentric-type fine-adjustable boring tool bar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690320A (en) * | 2015-04-02 | 2015-06-10 | 植健 | Novel rigid cutter bar |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130807 |