CN203471063U - Tool for machining casting holes - Google Patents
Tool for machining casting holes Download PDFInfo
- Publication number
- CN203471063U CN203471063U CN201320600236.XU CN201320600236U CN203471063U CN 203471063 U CN203471063 U CN 203471063U CN 201320600236 U CN201320600236 U CN 201320600236U CN 203471063 U CN203471063 U CN 203471063U
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- CN
- China
- Prior art keywords
- blade
- tool
- cutter hub
- handle
- rounding
- 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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Abstract
The utility model relates to a tool for machining casting holes. The tool comprises a tool body and a tool handle which is integrally connected with the tool body, and the rear end of the tool handle is provided with a tool apron which is matched with a motor. The tool body is in an orthohexagnal body shape, the six corner angles of the tool body are respectively provided with a hard alloy blade in an embedding mode, the sizes of the outer edge cutting edges of the blades are the same as the diameter of the excircle of the orthohexagnal body, the cutting edge cross sections of two adjacent blades are equal, and the front side edges of the cutting edges of the blades are curved faces formed by inverted right angles and inverted fillets in a combining mode.
Description
Technical field
The utility model belongs to metal manufacture field, refers to especially Mechanical processing of casting, the cutter of using while referring to machining small on a kind of ironcasting.
Background technology
In process of metal working, during for machining small, generally use reamer, the aperture precision of processing by reamer is high, highly polished.And in casting field, because the difficulty of aperture in mould is produced is larger, now by machining mode, to process aperture again after foundry goods completes substantially, but because the institutional framework of foundry goods itself is different from other metal structure structure, there is independently China ink and cause interior tissue a bit coarse in it.Therefore using existing cutter to carry out after aperture processing, accuracy error is large, and fineness is low, can not meet the field that some are had relatively high expectations to precision and fineness.
In order to overcome existing foundry goods aperture processing problems, CN2728692Y discloses a kind of technical scheme, is that form by tungsten carbide button's blade on cutter hub improves the bright and clean of aperture after processing.Fineness after this technical scheme is processed foundry goods aperture has larger lifting, and the part but Gai Ji Shu Hao still comes with some shortcomings, is exactly after tool sharpening, still has the existence of bulky grain projection or pit.This be mainly the cutter of this technical scheme still can not be completely by the bulky grain of foundry goods organization internal effectively cutting or extruding enter in tissue, and the service life of cutter is not long.
Utility model content
The purpose of this utility model is existing cutter to be proposed to one improve technical scheme, by the technical program, can further improve fineness and the precision of cutter boring, and be greatly improved the service life of cutter.
The utility model is achieved through the following technical solutions:
A foundry goods aperture tool, includes the handle of a knife that cutter hub is connected with same cutter hub one, and the rear end of described handle of a knife is the tool rest coordinating for same motor; The length of described cutter hub and the Length Ratio of handle of a knife are 1:3-1:5; Described cutter hub is positive hexagonal prism shape, on six corner angle of cutter hub, is respectively inlaid with carbide chip; The outer rim blade of described blade is that hexagonal prism circumcircle diameter is identical; The blade cross section of described blade equates for two blades of being separated by, and adjacent two blade cutting edge cross-sectional widths are than being 1:1.5; Wherein, blade front side edge is combined to form curved surface by chamfer and rounding.
In described blade cutting edge back side edge, the wide blade in blade cross section is combined to form curved surface by chamfer and rounding; The narrow blade in blade cross section forms curved surface by rounding.
Described blade cutting edge front end is provided with the tapering of 2-4 degree.
The beneficial effects of the utility model are:
1, pass through the technical program, adopt the blade of adjacent different cross section width, improved the tonnage to little internal surface of hole, be conducive to the bulky grain in foundry goods push or directly by the intensity of blade, bulky grain cut in tissue, and by the high temperature in process, change the institutional framework of little internal surface of hole.
2, by blade front end side portion, carry out the curve that chamfer and rounding are combined to form, the stress angle of blade is reduced, make in process, stress reduces, and is conducive to improve the life-span of blade.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model blade cutting edge front side edge enlarged drawing.
The specific embodiment
By specific embodiment, describe the technical solution of the utility model in detail below, should be understood that, following embodiment is only exemplary, only can be used for explaining and explanation the technical solution of the utility model, and can not to be interpreted as is the restriction to technical solutions of the utility model.
As Fig. 1 and a kind of foundry goods aperture of Fig. 2 tool, include the handle of a knife 2 that cutter hub 1 is connected with same cutter hub one, the rear end of described handle of a knife 2 is the tool rest 3 coordinating for same motor; The length of described cutter hub and the Length Ratio of handle of a knife are 1:3-1:5; If the Length Ratio of cutter hub and handle of a knife is crossed conference, in process, there is shake, affect the precision of tool sharpening.
Described cutter hub 1 is positive hexagonal prism shape, on six corner angle of cutter hub, is respectively inlaid with carbide chip; The outer rim blade of described blade is that hexagonal prism circumcircle diameter is identical; The blade cross section of described blade equates for two blades of being separated by, and adjacent two blade cutting edge cross-sectional widths are than being 1:1.5; Wherein, blade (41,42) blade front side edge is combined to form curved surface by chamfer 401 and rounding 402.In blade cutting edge back side edge, the wide blade 41 in blade cross section is combined to form curved surface by chamfer and rounding; The narrow blade 42 in blade cross section forms curved surface by rounding.
Described blade cutting edge front end is provided with the tapering of 2-4 degree.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (3)
1. a foundry goods aperture tool, is characterized in that: include the handle of a knife that cutter hub is connected with same cutter hub one, the rear end of described handle of a knife is the tool rest coordinating for same motor; The length of described cutter hub and the Length Ratio of handle of a knife are 1:3-1:5; Described cutter hub is positive hexagonal prism shape, on six corner angle of cutter hub, is respectively inlaid with carbide chip; The outer rim blade of described blade is that hexagonal prism circumcircle diameter is identical; The blade cross section of described blade equates for two blades of being separated by, and adjacent two blade cutting edge cross-sectional widths are than being 1:1.5; Wherein, blade front side edge is combined to form curved surface by chamfer and rounding.
2. foundry goods aperture tool according to claim 1, is characterized in that: in described blade cutting edge back side edge, the wide blade in blade cross section is combined to form curved surface by chamfer and rounding; The narrow blade in blade cross section forms curved surface by rounding.
3. foundry goods aperture tool according to claim 1 and 2, is characterized in that: described blade cutting edge front end is provided with the tapering of 2-4 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600236.XU CN203471063U (en) | 2013-09-24 | 2013-09-24 | Tool for machining casting holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320600236.XU CN203471063U (en) | 2013-09-24 | 2013-09-24 | Tool for machining casting holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203471063U true CN203471063U (en) | 2014-03-12 |
Family
ID=50219473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320600236.XU Expired - Fee Related CN203471063U (en) | 2013-09-24 | 2013-09-24 | Tool for machining casting holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203471063U (en) |
-
2013
- 2013-09-24 CN CN201320600236.XU patent/CN203471063U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20150924 |
|
| EXPY | Termination of patent right or utility model |