CN215545474U - Novel composite guide reamer suitable for machining valve core hole - Google Patents
Novel composite guide reamer suitable for machining valve core hole Download PDFInfo
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- CN215545474U CN215545474U CN202122394887.5U CN202122394887U CN215545474U CN 215545474 U CN215545474 U CN 215545474U CN 202122394887 U CN202122394887 U CN 202122394887U CN 215545474 U CN215545474 U CN 215545474U
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Abstract
The utility model discloses a novel composite guide reamer suitable for machining a valve core hole, and belongs to the technical field of machining tools. The reaming guide part, the coarse reaming guide part, the fine reaming guide part and the cylindrical cutter handle part are coaxially arranged in an integrated manner; the hole expanding guide part, the coarse hinge guide part and the fine hinge guide part are sequentially connected into a three-step shape, and the diameters of the hole expanding guide part, the coarse hinge guide part and the fine hinge guide part are sequentially increased. And the axes of the reaming guide part, the coarse reaming guide part, the fine reaming guide part and the cylindrical cutter handle part are provided with inner cooling holes. This compound guide reamer designs into three-step shaping reamer with the cutter front end, and rational distribution machining allowance forms multistage cutting, and the reaming shaping reaches the chip breaking effect, has not only improved machining efficiency, reduces cutter purchasing cost moreover. The composite guide reamer has better applicability to machining of various multi-way valves and has certain reference significance for hydraulic valve manufacturing enterprises in the same row.
Description
Technical Field
The utility model relates to a machining tool, in particular to a novel composite guide reamer suitable for machining a valve core hole.
Background
The hydraulic multi-way valve is a core control element of a hydraulic system of engineering machinery, a valve body is a core part, and a cast structure is mostly adopted at present. The machining of the cast valve body is a key characteristic point for the machining and manufacturing of the hydraulic multi-way valve and is one of the machining difficulties. The machining quality of a cast valve body with a slide valve structure, a valve core hole, an insertion hole and the like directly influences the working performance and the service life of the hydraulic multi-way valve, and the machining cost directly influences the competitiveness of a product in the market.
At present, most of valve core holes of cast valve bodies are cast holes before machining, a universal machining method is to use universal cutters such as a drill bit, a hole expanding cutter and a reamer to machine, the technology cannot ensure coaxiality, aperture tolerance and roughness, and annular iron scraps exist.
The Chinese patent discloses an inner-cooling step reamer (CN111014825A), which comprises a first reamer column, a first pair of interfaces, a second pair of interfaces, an oil groove, a second reamer column, a butt column, a reamer blade, a bayonet, a first oil outlet and a second oil outlet. First reamer post, the second reamer post, the butt joint post, the reamer sword constitutes this interior cold step reamer's major structure jointly, and the total length is 170mm, specific length through the combination formula, reach the service length standard of step reamer, the gradient of bayonet socket is 70 degrees, through specific precision, guarantee cutting accuracy, the diameter of reaming cutting edge is 8.5mm, reach the cutting hole diameter of standard, first reamer post, the second reamer post, the inside of butt joint post is provided with the cavity pipeline, and on a straight line, guarantee having a perfect understanding of fluid smoothly, first oil-out and second oil-out all link up with the oil groove through the cavity pipeline, guarantee that fluid can be smooth when this step reamer during operation overflows.
The above prior art has the following disadvantages:
1. in the patent, annular scrap iron exists in the machining process of the internal cooling step reamer;
2. the inner-cooling step reamer described in the patent is easy to break, and is not beneficial to market popularization.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a novel composite guide reamer suitable for machining a valve core hole.
The utility model is realized by the following technical scheme: a novel composite guide reamer suitable for machining a valve core hole comprises a reaming guide part, a coarse reaming guide part, a fine reaming guide part and a cylindrical cutter handle part which are coaxially arranged in an integrated mode; the hole expanding guide part, the coarse hinge guide part and the fine hinge guide part are sequentially connected into a three-step shape, and the diameters of the hole expanding guide part, the coarse hinge guide part and the fine hinge guide part are sequentially increased.
It further comprises the following steps: the chamfer angle of the front end of the reaming guide part is 180 degrees, and the machining allowance of the reaming guide part is 0.03 mm.
The chamfer angle of the front end of the coarse hinge guide part is 90 degrees, and the machining allowance of the coarse hinge guide part is 0.01 mm.
The chamfer angle of the front end of the fine reaming guide part is 70 degrees, and the machining allowance of the fine reaming guide part is 0.005 mm.
And the axes of the reaming guide part, the coarse reaming guide part, the fine reaming guide part and the cylindrical cutter handle part are provided with inner cooling holes.
Compared with the prior art, the utility model has the beneficial effects that:
1. the reaming forming chip breaking effect is good: designing the front end of the composite guide reamer into a three-step forming reamer, reasonably distributing machining allowance, forming multi-stage cutting, reaming and forming, achieving a chip breaking effect, and removing annular scrap iron in a casting hole;
2. the cutter has low cost: the front end of the composite guide reamer is designed into a three-step forming reamer, and reaming guide, coarse reaming guide and fine reaming guide are combined into a whole, so that 2 cutters are saved, and the cutter purchasing cost is reduced by over 60%;
3. the processing precision is high: the combined guide reamer concentrates reaming guide, rough reaming guide and finish reaming guide on one cutter, the machining precision of the valve core hole is high, and the coaxiality of the reaming guide, the rough reaming guide and the finish reaming guide is less than or equal to phi 0.02 mm.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a left side view of the present invention;
FIG. 3 is an enlarged view at A in FIG. 1;
FIG. 4 is a view from B-B in FIG. 1;
in the figure: 1. a hole-expanding guide part; 2. a coarse hinge guide part; 3. a fine-reaming guide part; 4. a cylindrical tool shank portion; 5. and (4) internal cooling holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, a novel composite guide reamer suitable for machining a valve core hole includes an integral reaming guide portion 1, a rough reaming guide portion 2, a finish reaming guide portion 3, and a cylindrical cutter shank portion 4, and the reaming guide portion 1, the rough reaming guide portion 2, the finish reaming guide portion 3, and the cylindrical cutter shank portion 4 are coaxial cylinders centered on the same central axis. Reaming guide portion 1, thick hinge guide portion 2, finish reaming guide portion 3 connect gradually into three-step ladder form, and reaming guide portion 1, thick hinge guide portion 2, 3 diameters of finish reaming guide portion increase in proper order, through rational distribution machining allowance, form multistage cutting, and the reaming shaping reaches the chip breaking effect.
The chamfer angle of the front end of the reaming guide part 1 is 180 degrees for enlarging pre-cast holes, and the reaming guide part 1 distributes 0.03mm machining allowance as reaming guide.
For coarse hinge chip breaking, the front chamfer of the coarse hinge guide 2 is set to 90 °, and the coarse hinge guide 2 is assigned a machining allowance of 0.01mm as a coarse hinge guide.
The chamfer angle of the front end of the fine-reaming guide part 3 is 70 degrees, the fine-reaming guide part is used for preventing the fine-reaming from scratching the valve core hole, and the fine-reaming guide part 3 distributes 0.005mm machining allowance to be used as fine-reaming guide.
The axle center of the reaming guide part 1, the coarse reaming guide part 2, the fine reaming guide part 3 and the cylindrical cutter handle part 4 is provided with an inner cooling hole 5, so that scrap iron generated in the machining process can be effectively removed in time.
In the embodiment, the front end of the cutter is designed into a three-step forming reamer, the machining allowance is reasonably distributed, multi-stage cutting is formed, and the reaming forming and chip breaking effects are achieved; the reaming guide, the rough reaming guide and the fine reaming guide are combined into a whole, so that 2 cutters are saved, and the cutter purchasing cost is reduced by more than 60%; the reaming guide, the rough reaming guide and the fine reaming guide are integrated in one cutter, the machining precision of the valve core hole is high, the coaxiality of the reaming guide, the rough reaming guide and the fine reaming guide is less than or equal to phi 0.02mm, and the method has certain reference significance for hydraulic valve manufacturing enterprises.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a novel compound guide reamer suitable for case hole machine tooling which characterized in that: the reaming guide part comprises a reaming guide part (1), a coarse reaming guide part (2), a fine reaming guide part (3) and a cylindrical cutter handle part (4) which are coaxially arranged in an integrated manner; the hole expanding guide part (1), the coarse hinge guide part (2) and the fine hinge guide part (3) are sequentially connected into a three-step shape, and the diameters of the hole expanding guide part (1), the coarse hinge guide part (2) and the fine hinge guide part (3) are sequentially increased.
2. The novel composite guide reamer suitable for valve core hole machining according to claim 1, wherein: the front end of the reaming guide part (1) is chamfered to 180 degrees, and the machining allowance of the reaming guide part (1) is 0.03 mm.
3. The novel composite guide reamer suitable for valve core hole machining according to claim 2, wherein: the chamfer angle of the front end of the coarse hinge guide part (2) is 90 degrees, and the machining allowance of the coarse hinge guide part (2) is 0.01 mm.
4. The novel composite guide reamer suitable for valve core hole machining according to claim 3, wherein: the chamfer angle of the front end of the fine-reaming guide part (3) is 70 degrees, and the machining allowance of the fine-reaming guide part (3) is 0.005 mm.
5. The novel composite guide reamer suitable for valve core hole machining according to claim 1, wherein: and an inner cooling hole (5) is formed in the axes of the reaming guide part (1), the coarse reaming guide part (2), the fine reaming guide part (3) and the cylindrical cutter handle part (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122394887.5U CN215545474U (en) | 2021-09-30 | 2021-09-30 | Novel composite guide reamer suitable for machining valve core hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122394887.5U CN215545474U (en) | 2021-09-30 | 2021-09-30 | Novel composite guide reamer suitable for machining valve core hole |
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| Publication Number | Publication Date |
|---|---|
| CN215545474U true CN215545474U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122394887.5U Active CN215545474U (en) | 2021-09-30 | 2021-09-30 | Novel composite guide reamer suitable for machining valve core hole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055910A (en) * | 2022-07-12 | 2022-09-16 | 徐州阿马凯液压技术有限公司 | High-precision valve core hole precision machining method suitable for casting valve body |
-
2021
- 2021-09-30 CN CN202122394887.5U patent/CN215545474U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055910A (en) * | 2022-07-12 | 2022-09-16 | 徐州阿马凯液压技术有限公司 | High-precision valve core hole precision machining method suitable for casting valve body |
| CN115055910B (en) * | 2022-07-12 | 2023-08-29 | 徐州阿马凯液压技术有限公司 | High-precision valve core hole precision machining method suitable for cast valve body |
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