CN201776526U - Composite cutting tool for processing guide tube bottom hole and seat ring bottom hole of cylinder cover - Google Patents
Composite cutting tool for processing guide tube bottom hole and seat ring bottom hole of cylinder cover Download PDFInfo
- Publication number
- CN201776526U CN201776526U CN2010205013397U CN201020501339U CN201776526U CN 201776526 U CN201776526 U CN 201776526U CN 2010205013397 U CN2010205013397 U CN 2010205013397U CN 201020501339 U CN201020501339 U CN 201020501339U CN 201776526 U CN201776526 U CN 201776526U
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- bottom outlet
- seat ring
- cutting tool
- bottom hole
- processing
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Abstract
The utility model discloses a composite cutting tool for processing the guide tube bottom hole and the seat ring bottom hole of a cylinder cover. The composite cutting tool comprises a guide tube bottom hole cutting tool, a seat ring bottom hole cutting tool and a tool holder. The composite cutting tool is characterized in that the guide tube bottom hole cutting tool comprises a cutting part arranged at the front end, an extruding part arranged in the middle and a finishing part arranged at the rear end; and the diameter of the cutting part is slightly smaller than that of the extruding part. The composite cutting tool changes the reaming structure of the conventional guide tube bottom hole cutting tool into a reaming and extruding structure, that is, an extruding and finishing structure are arranged at the rear end. After cut by the cutting part, a workpiece directly enters into the extruding part for extruding; due to the mode of non-blade cutting extrusion, the cutting tool has good self-centering function and can continuously process a hole through the location of an orifice by the cutting tool, therefore the composite cutting tool is endowed with the self-guiding function, and the rigidity and the error correcting capacity of the composite cutting tool are improved. When the seat ring bottom hole is processed, the extruding and finishing part also serves as the front guiding part of a seat ring reamer, therefore the coaxiality of the guide tube bottom hole and the seat ring bottom hole is ensured.
Description
Technical field
The utility model relates to cutter, relates in particular to the compound tool that same part diverse location is processed simultaneously, the compound tool of processing usefulness at the bottom of specifically a kind of cylinder head conduit bottom outlet and the seat ring.
Background technology
Cylinder head is a major part of engine, and it has the quality index of a key: the valve retainer conical surface is beated to valve guide bushing.Its machining accuracy quality can directly influence the sealing of engine chamber, and sealing missionary society reduces the power output of engine, so extremely important, one need be controlled in the 0.02mm.In order to ensure its precision, the axiality of cylinder cap seat ring bottom outlet and conduit bottom outlet need be controlled in 0.04 millimeter of the Φ.Because conduit is to adopt interference fit to be connected with seat ring and cylinder cap parent, for the aperture that guarantees firm conduit, seat ring bottom outlet need be controlled at the H7 precision, roughness is controlled in the Ra1.6.
The processing technology of cylinder head is: process parent earlier, and then be pressed into blanking cover, atomizer copper sheathing, seat ring, conduit, the last fine finishining valve retainer conical surface and conduit.One adopts the processing of brill-expansion-boring-partly finish ream-finish ream conduit bottom outlet conduit bottom outlet; The seat ring bottom outlet adopts the processing technology of expansion-boring-partly finish ream-finish ream.
Because the requirement on machining accuracy height of cylinder head guide pipe, seat ring bottom outlet, one adopts the processing of building-block machine special plane, for guaranteeing the axiality of conduit bottom outlet and seat ring bottom outlet, adopts the processing technology of combination cutter+forward and backward guiding.Its building-block machine processing characteristic: product is single, and machining accuracy is guaranteed by anchor clamps and cutter.Along with the development of society, the rhythm of new product development is more and more faster, owing to greatly greater than the life cycle of product, can bring huge waste to enterprise when the update of product the service life of building-block machine equipment.Now progressively to flexible machining centre processing development.Flexible processing characteristic: satisfy the needs of many variety production, machining accuracy depends on the precision of equipment and cutter.
Processing cylinder head guide pipe bottom outlet on flexible wires, because cutter is subjected to the restriction of equipment, cutter structure can not adopt the building-block machine cutter structure of tape guide.When finish reaming the conduit bottom outlet, in order to guarantee the axiality of conduit bottom outlet and seat ring bottom outlet, though adopted compound tool hinge-boring, because the reamer of processing conduit stretches out longer, and can not adopt guiding, so poor rigidity is the aperture size and the surface roughness instability of processing.In addition, cutter is to be directly installed on the machine tool chief axis by handle of a knife, so the installation accuracy of cutter and machine tool chief axis precision can directly influence beating of Tool in Cutting sword, makes beating of Tool in Cutting sword amplify several times, causes conduit bottom outlet aperture big, and roughness descends.The reamer error correcting capability is relatively poor, when blade slightly weares and teares, is subjected to the influence of preceding operation crudy bigger, and cutter life is low; When processing seat ring end face, because of the blade broad is produced vibrations, the machined surface of destructible guide hole.Thereby influence the axiality of bottom outlet and seat ring bottom outlet.
Summary of the invention
To be solved in the utility model is existing compound tool poor rigidity, the defective that cylinder head guide hole machining accuracy is low, aim to provide a kind of follow-on compound tool, the mode of locating by leading certainly solves the problem of cutter poor rigidity, guarantees the precision of guide hole processing.
The technical scheme that addresses the above problem employing is: cylinder head conduit bottom outlet and seat ring bottom outlet processing compound tool, comprise conduit bottom outlet processing cutter, seat ring bottom outlet processing cutter and handle of a knife, it is characterized in that described conduit bottom outlet processing cutter comprises the cutting tip of front end, the crimping section of centre and the polishing part of rear end, the diameter of described cutting tip is slightly less than the diameter of crimping section.
Compound tool of the present utility model, the reamer structure of existing conduit bottom outlet being processed cutter has made hinge-squeezed structure into, i.e. front end cutting, the rear end is made extruding and polishing into.When workpiece just directly enters crimping section after cutting, because of extruding is no sword cutting, it will have good Self-centering Action, continue to process this hole with the location, aperture of self processing, make cutter possess the function that leads certainly, improve the rigidity and the error correcting capability of cutter.Add man-hour at the seat ring bottom outlet, extruding, polishing part again as the seat ring reamer leading to, guaranteed the axiality of conduit bottom outlet and seat ring bottom outlet.Extruding has solved cutter does not have the problem that guiding produces, and has improved the surface roughness of conduit bottom outlet simultaneously yet.
By improving the machining accuracy of cylinder head guide pipe, seat ring bottom outlet, guaranteed the crudy of the head valve seat ring conical surface to valve guide bushing.
As further improvement of the utility model, described seat ring bottom outlet processing cutter has made multiple-cutting-edge reamer structure into by existing boring cutter structure, has reduced the vibrations of cutter, has improved the life-span of compound tool.
Further improve as of the present utility model, the length of cutting tip and crimping section is 10 millimeters, and the length of polishing part is 20 millimeters.The diameter of cutting tip is than the little 0.01-0.02 millimeter of diameter of crimping section.The polishing seamed edge of the extruding seamed edge of crimping section and polishing part is curved, and the air line distance of wherein pushing seamed edge is the 0.1-0.15 millimeter, the polishing seamed edge air line distance be the 1-2 millimeter.The tool cutting edge angle α of the cutting edge of cutting tip is 45 degree-75 degree.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the cutter figure that existing building-block machine processing is used.
Fig. 2 is the structural representation of the working position of workpiece to be machined.
Fig. 3 is the cutter figure that existing flexible processing technology is used.
Fig. 4 is the structural representation of the cutter head part of Fig. 3.
Fig. 5 is the structural representation of Fig. 3 cutting tip.
Fig. 6 is the structural representation of the compound tool of the flexible processing technology use of the utility model.
Fig. 7 be among Fig. 6 A-A to cutaway view.
Fig. 8 be among Fig. 6 B-B to cutaway view.
Fig. 9 be among Fig. 6 C-C to cutaway view.
Figure 10 be among Fig. 6 D-D to cutaway view.
Figure 11 is the structural representation of Fig. 6 conduit bottom outlet processing cutter.
Figure 12 is the broken section enlarged drawing at cutting-edge place among Figure 11.
Figure 13 is the broken section enlarged drawing of extruding seamed edge position among Figure 11.
Figure 14 is the broken section enlarged drawing of polishing seamed edge position among Figure 11.
The specific embodiment
Figure 1 shows that the structure of existing building-block machine processing use cutter, comprise conduit bottom outlet processing cutter 2, seat ring bottom outlet processing cutter 3 and handle of a knife 4, described conduit bottom outlet processing cutter 2 is a reamer, at the reamer front end a long guide post 1 is arranged.This cutter is used for processing simultaneously the conduit bottom outlet 6 and the seat ring bottom outlet 7 of cylinder head 5 shown in Figure 2.
Add the man-hour guide post and 1 be introduced into fixture guide sleeve, controlled rocking of reamer cutting tip, also improved the rigidity of cutter simultaneously, have the ability of correcting the position.Tool shank 4 adopts Morse taper shank to be connected with extension bar, and extension bar adopts the fixture guide sleeve location.Guide-localization structure has promptly been guaranteed positional precision and the perpendicularity and the axiality of conduit, seat ring bottom outlet.
The cutter structure that the existing flexible processing technology of Fig. 3-Figure 5 shows that is used, because of being subjected to the restriction of equipment, the reamer front end can not guide, comprise conduit bottom outlet processing cutter 2, seat ring bottom outlet processing cutter 3 and handle of a knife 4, conduit bottom outlet processing cutter 2 parts adopt the chucking reamer structure of standard, it is made up of the cylinder 25 of the cutting tip 24 of cutting front end, centre and 26 3 parts of back taper of rear end, and the tool cutting edge angle α of cutting edge 211 is 15 degree.Its defective front is preceding to have been described, and did not repeat them here.
Fig. 6-Figure 14 shows that the compound tool structure that flexible processing technology of the present utility model is used, same because of being subjected to the restriction of equipment, the reamer front end does not have guiding.It comprises conduit bottom outlet processing cutter 2, seat ring bottom outlet processing cutter 3 and handle of a knife 4, described conduit bottom outlet processing cutter 2 comprises the cutting tip 21 of front end, the crimping section 22 of centre and the polishing part 23 of rear end, and the diameter of described cutting tip 21 is slightly less than the diameter of crimping section 22.
In the present embodiment, the extruding seamed edge 221 of crimping section 22 and the polishing seamed edge 231 of polishing part 23 are curved, and the air line distance D1 that wherein pushes seamed edge 221 is the 0.1-0.15 millimeter, and the air line distance D2 of polishing seamed edge 231 is the 1-2 millimeter.The tool cutting edge angle α of the cutting edge 221 of cutting tip is 45 °-75 °.
Seat ring bottom outlet processing cutter 3 is the multiple-cutting-edge reamer.
Compound tool of the present utility model is compared with the cutter structure that Fig. 3-existing flexible processing technology shown in Figure 5 is used, and following improvement is arranged: it is 10 millimeters that cutter front end cutting tip is shortened, and adopts bigger tool cutting edge angle, to improve the error correcting capability of cutter.10 millimeters of cutting tip rear ends, made extrusion structure into, after cutting 10 millimeters, workpiece just directly enters crimping section, because of extruding is no sword cutting, it will have good Self-centering Action, continue this hole of processing with the location, aperture that self processes, make cutter possess the function that leads certainly, also improved the rigidity and the error correcting capability of cutter simultaneously.20 millimeters of crimping section rear ends increase the polishing part, with the surface roughness of raising guide hole, and as the guiding that the seat ring bottom outlet is processed, improve the axiality of conduit bottom outlet and seat ring bottom outlet.Whole cutting tip length has made 40 millimeters into, has saved the cutanit material, and the cost of charp tool is descended.
This programme can not only satisfy manufacturing technique requirent by the production checking of recent months, has also improved production efficiency greatly, has reduced the cost of charp tool, and has guaranteed the crudy of the head valve seat ring conical surface and valve guide bushing, now has been applied to produce.Be the high deep hole of requirement on machining accuracy, a kind of new processing method is provided.
What should be understood that is: the foregoing description is just to explanation of the present utility model, rather than to restriction of the present utility model, any innovation and creation that do not exceed in the utility model connotation scope all fall within the protection domain of the present utility model.
Claims (6)
1. cylinder head conduit bottom outlet and seat ring bottom outlet are processed and are used compound tool, comprise conduit bottom outlet processing cutter (2), seat ring bottom outlet processing cutter (3) and handle of a knife (4), it is characterized in that described conduit bottom outlet processing cutter (2) comprises the cutting tip (21) of front end, the crimping section (22) of centre and the polishing part (23) of rear end, the diameter of described cutting tip (21) is slightly less than the diameter of crimping section (22).
2. compound tool is used in cylinder head conduit bottom outlet as claimed in claim 1 and the processing of seat ring bottom outlet, it is characterized in that the diameter little 0.01-0.02 millimeter of the diameter of cutting tip (21) than crimping section (22).
3. cylinder head conduit bottom outlet as claimed in claim 1 and seat ring bottom outlet processing compound tool, the polishing seamed edge (231) that it is characterized in that the extruding seamed edge (221) of crimping section (22) and polishing part (23) is curved, the air line distance (D1) of wherein pushing seamed edge (221) is the 0.1-0.15 millimeter, and the air line distance (D2) of polishing seamed edge (231) is the 1-2 millimeter.
4. compound tool is used in cylinder head conduit bottom outlet as claimed in claim 1 and the processing of seat ring bottom outlet, it is characterized in that the length of cutting tip (21) and crimping section (22) is 10 millimeters, and the length of polishing part (23) is 20 millimeters.
5. compound tool is used in cylinder head conduit bottom outlet as claimed in claim 1 and the processing of seat ring bottom outlet, and the tool cutting edge angle α that it is characterized in that the cutting edge (221) of the cutting tip of front end is 45 degree-75 degree.
6. use compound tool as any one described cylinder head conduit bottom outlet of claim 1-5 and the processing of seat ring bottom outlet, it is characterized in that seat ring bottom outlet processing cutter (3) is the multiple-cutting-edge reamer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205013397U CN201776526U (en) | 2010-08-23 | 2010-08-23 | Composite cutting tool for processing guide tube bottom hole and seat ring bottom hole of cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205013397U CN201776526U (en) | 2010-08-23 | 2010-08-23 | Composite cutting tool for processing guide tube bottom hole and seat ring bottom hole of cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201776526U true CN201776526U (en) | 2011-03-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205013397U Expired - Lifetime CN201776526U (en) | 2010-08-23 | 2010-08-23 | Composite cutting tool for processing guide tube bottom hole and seat ring bottom hole of cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201776526U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312673A (en) * | 2015-06-11 | 2016-02-10 | 陈庆军 | Combined type reamer |
-
2010
- 2010-08-23 CN CN2010205013397U patent/CN201776526U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105312673A (en) * | 2015-06-11 | 2016-02-10 | 陈庆军 | Combined type reamer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |
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| CX01 | Expiry of patent term |