CN216462204U - Self-centering positioning reamer - Google Patents
Self-centering positioning reamer Download PDFInfo
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- CN216462204U CN216462204U CN202122577436.5U CN202122577436U CN216462204U CN 216462204 U CN216462204 U CN 216462204U CN 202122577436 U CN202122577436 U CN 202122577436U CN 216462204 U CN216462204 U CN 216462204U
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- centering
- guide angle
- reamer
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- angle
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Abstract
The utility model discloses a self-centering positioning reamer. The self-centering locating reamer includes: the stalk portion, follow the stalk portion is provided with a plurality of cutting edges along the cutting edge that axial direction extends, the cutting edge is provided with a plurality of cutting edges along axial circumferencial direction, one side of cutting edge forms sword groove direction rake face, and two are adjacent leave the sword groove between the cutting edge, be provided with first centering guide angle and second centering guide angle on the cutting edge, so that the reamer is accurate to be centering on treating the machined part. The self-centering positioning reamer provided by the utility model has a simple structure, and the self-centering positioning capability of the reamer is improved and the processing efficiency is improved by arranging the first centering guide angle and the second centering guide angle on the edge part of the reamer; the hole wall is extruded by the peripheral edge cylindrical blade, so that the tolerance of the hole is ensured, the accuracy is improved, and the hole wall is smooth.
Description
Technical Field
The utility model relates to a reamer, in particular to a self-centering positioning reamer, and belongs to the technical field of reamer design and manufacturing.
Background
The reamer is a rotary tool having one or more teeth for cutting a thin layer of metal on the surface of a machined hole, and the reamer is a rotary finishing tool having a straight edge or a spiral edge for reaming or repairing the hole. The machining accuracy of the reamer is generally higher than that of the drill due to the small cutting amount. Can be operated manually or installed on a drilling machine for working. The machined part is treated in the processing of the existing reamer, and the problems that the centering and the positioning are not accurate, the manual auxiliary centering is needed, the roughness of the processed hole wall is large, the hole wall is not smooth, and the service life of a cutter is short are solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a self-centering positioning reamer to overcome the defects in the prior art.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model comprises the following steps: the embodiment of the utility model provides a self-centering positioning reamer, which comprises: the stalk portion, follow the stalk portion is provided with a plurality of cutting edges along the cutting edge that axial direction extends, the cutting edge is provided with a plurality of cutting edges along axial circumferencial direction, one side of cutting edge forms sword groove direction rake face, and two are adjacent leave the sword groove between the cutting edge, be provided with first centering guide angle and second centering guide angle on the cutting edge, so that the reamer is accurate to be centering on treating the machined part.
Preferably, the end of the cutting edge near the cutting end is provided with the first centering guide angle.
Preferably, the first centering guide angle is a circular arc centering guide angle.
Preferably, the angle of the first centering guide angle is 2 ° to 8 °.
Preferably, the cutting edge is provided with the second centering guide angle at a position close to the first centering guide angle.
Preferably, the second centering guide angle is a cone-forming guide angle.
Preferably, the angle of the second centering guide angle is 15 ° to 25 °.
Preferably, the second centering guide angle includes a first cone forming guide angle and a second cone forming guide angle, and the first cone forming guide angle and the second cone forming guide angle are adjacently arranged in the first direction of the cutting edge.
Preferably, the cutting edge side wall is provided with a peripheral edge cylindrical land and a peripheral edge cutting relief angle.
Preferably, the cutting relief angle of the peripheral edge is 15 ° to 35 °.
Preferably, one end of the cutter groove extends to form a groove tail, and the depth and the width of the groove tail gradually shrink from the center of the cutter groove to two sides.
Compared with the prior art, the utility model has the advantages that:
1. the self-centering positioning reamer provided by the embodiment of the utility model has a simple structure, and the self-centering positioning capability of the reamer is improved and the processing efficiency is improved by arranging the first centering guide angle and the second centering guide angle on the edge part of the reamer.
2. According to the self-centering positioning reamer provided by the embodiment of the utility model, the hole wall is extruded through the peripheral edge cylindrical blade zone, so that the tolerance of the hole is ensured, the accuracy is improved, and the hole wall is smooth.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic plan view of a self-centering reamer as provided in an exemplary embodiment of the present invention;
FIG. 2 is an enlarged view of the middle blade portion of a self-centering reamer according to an exemplary embodiment of the present invention;
FIG. 3 is an enlarged view of the middle blade portion of a self-centering reamer according to an exemplary embodiment of the present invention;
description of reference numerals:
1. a reamer; 2. a handle; 3. a blade part; 4. a first centering guide angle; 5. a second centering pilot angle; 501. forming a guide angle by a first cone; 502. a second cone forming guide angle; 6. the cutter groove guides the front cutter surface; 7. a cutter groove; 8. a peripheral edge cylindrical land; 9. a groove tail; 10. the peripheral edge is cut at a relief angle.
Detailed Description
In view of the deficiencies in the prior art, the inventors of the present invention have made extensive studies and extensive practices to provide technical solutions of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.
Referring to fig. 1, the present embodiment provides a self-centering reamer, which includes: shank 2, follow shank 2 is along the cutting part 3 of axial direction extension, cutting part 3 is provided with a plurality of cutting edges along axial circumferencial direction, one side of cutting edge forms sword groove direction rake face 6, and two are adjacent leave sword groove 7 between the cutting edge, be provided with first centering guide angle 4 and second centering guide angle 5 on the cutting edge, so that reamer 1 is accurate in treating the centering on the machined part.
Specifically, an edge portion 3 is fixedly disposed at one end of the shank 2, wherein the edge portion 3 may be formed by a plurality of cutting edges circumferentially arrayed along the axial direction of the reamer 1.
Specifically, a first centering guide angle 4 and a second centering guide angle 5 are arranged on the cutting edge, automatic centering and positioning are achieved when the reamer 1 is used for cutting through the first centering guide angle 4 and the second centering guide angle 5, the roughness level of a machined hole is high, and accuracy is good.
Specifically, a tool groove 7 is reserved between two adjacent cutting edges, wherein the tool groove 7 is used for discharging scraps, so that the chip removal smoothness of the reamer 1 is ensured, the chip removal is accelerated, and the service life of the reamer 1 is prolonged.
In this embodiment, the end of the cutting edge near the cutting end is provided with the first centering guide angle 4.
Specifically, the end of the cutting edge is provided with a first centering guide angle 4 to realize the initial centering of the reamer 1, wherein the first centering guide angle 4 can be an arc centering guide angle or a cone forming guide angle. The first centering guide angle 4 has the advantages of optimal effect, high centering speed and accurate centering by using an arc centering guide angle.
In this embodiment, the first centering guide angle 4 is an arc centering guide angle.
Specifically, in order to adopt the best technical solution, the first centering guide angle 4 is set to be an arc centering guide angle.
In this embodiment, the angle of the first centering guide angle 4 is 2 ° to 8 °.
In particular, the first centering guide angle 4 is used for guiding the cutting and guiding the tangential direction. When the first centering guide angle 4 is lower than 2 degrees, the reamer 1 cannot guide; when the first centering guide angle 4 is higher than 8 °, the reamer 1 is caused to cut with low efficiency.
In this embodiment, the second centering guide angle 5 is disposed on the cutting edge near the first centering guide angle 4.
Specifically, the second centering guide angle 5 and the first centering guide angle 4 should be adjacently arranged, and the second centering guide angle 5 is used for secondary centering positioning after the primary centering positioning is carried out on the first centering guide angle 4. After primary centering, secondary centering is used for improving the accuracy of centering and positioning.
Specifically, the second centering guide angle 4 may be an arc centering guide angle, or may be a cone forming guide angle, wherein the second centering guide angle 5 is a secondary centering guide, and therefore the cone forming guide angle adopted by the second centering guide angle 5 has the best effect.
In this embodiment, the second centering guide angle 5 is a cone forming guide angle.
Specifically, in order to adopt the best technical scheme, the first centering guide angle 4 adopts a cone-shaped guide angle.
In this embodiment, the angle of the second centering guide angle 5 is 15 ° to 25 °.
Specifically, the angle of the second centering guide angle 5 should be 15 ° to 25 °, and when the second centering guide angle 5 is less than 15 °, the guide centering cannot be performed, and when the second centering guide angle 5 is greater than 25 °, the direct cutting cannot be performed.
In this embodiment, the second centering guide angle 5 includes a first cone forming guide angle 501 and a second cone forming guide angle 502, and the first cone forming guide angle 501 and the second cone forming guide angle 502 are adjacently disposed in the first direction of the cutting edge.
Specifically, the second centering guide angle 5 is a cone forming guide angle, wherein the second centering guide angle 5 comprises a first cone forming guide angle 501 and a second cone forming guide angle 502. Wherein the first cone forming lead angle 501 and the second cone forming lead angle 502 are both in contact with the first centering lead angle 5.
In particular, the first direction is the radial direction of the reamer 1.
In this embodiment, the side wall of the cutting edge is provided with a peripheral edge cylindrical land 8 and a peripheral edge cutting relief angle 10.
Specifically, the peripheral edge cylindrical land 8 is used for extruding the hole wall, so that the tolerance of the hole is guaranteed, and the accuracy is improved.
Specifically, because the peripheral edge cylindrical land 8 extrudes the hole wall, the smoothness of the hole wall can be improved, burrs of the hole wall are reduced, and secondary machining is not needed for polishing and deburring the hole wall.
In this embodiment, the cutting relief angle 10 of the peripheral edge is 15 ° to 35 °.
Specifically, the angle of the peripheral edge cutting back angle 10 is 15 ° to 35 °, wherein the angle of the peripheral edge cutting back angle 10 being lower than 15 ° may result in the peripheral edge cutting back angle 10 being too small to cut the workpiece to be machined, and the angle of the peripheral edge cutting back angle 10 being greater than 35 ° may result in the peripheral edge cutting angle 10 being too large to accelerate the wear of the edge portion, and shorten the service life.
In this embodiment, one end of the knife groove 7 extends to form a groove tail 9, and the depth and width of the groove tail 9 gradually shrink from the center of the knife groove 7 to both sides.
Specifically, a groove tail 9 is left at the end part of the knife groove 7, wherein the width and the depth of the groove tail 9 are gradually reduced from the center of the knife groove 7 to the groove tail 9, so that the groove tail 9 forms a dovetail groove tail.
Specifically, the sipes 7 should be circular arc sipes 7.
It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and therefore, the protection scope of the present invention is not limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A self-centering reamer characterized by comprising: the stalk portion, follow the stalk portion is provided with a plurality of cutting edges along the cutting edge that axial direction extends, the cutting edge is provided with a plurality of cutting edges along axial circumferencial direction, one side of cutting edge forms sword groove direction rake face, and two are adjacent leave the sword groove between the cutting edge, be provided with first centering guide angle and second centering guide angle on the cutting edge, so that the reamer is accurate to be centering on treating the machined part.
2. The self-centering reamer of claim 1 wherein: the end part of the cutting edge close to the cutting end is provided with the first centering guide angle.
3. The self-centering reamer of claim 2 wherein: the first centering guide angle is an arc centering guide angle.
4. The self-centering reamer of claim 2 wherein: the angle of the first centering guide angle is 2-8 degrees.
5. The self-centering reamer of claim 1 wherein: and the second centering guide angle is arranged at the position, close to the first centering guide angle, on the cutting edge.
6. The self-centering reamer of claim 5 wherein: the second centering guide angle is a cone forming guide angle.
7. The self-centering reamer of claim 5 wherein: the angle of the second centering guide angle is 15-25 degrees.
8. The self-centering reamer of claim 5 wherein: the second centering guide angle comprises a first cone forming guide angle and a second cone forming guide angle, and the first cone forming guide angle and the second cone forming guide angle are adjacently arranged on the first direction of the cutting edge.
9. The self-centering reamer of claim 1 wherein: a peripheral edge cylindrical blade zone and a peripheral edge cutting relief angle are arranged on the side wall of the cutting edge; and/or the angle of the cutting relief angle of the peripheral edge is 15-35 degrees.
10. The self-centering reamer of claim 1 wherein: one end of the cutter groove is provided with a groove tail in an extending mode, and the depth and the width of the groove tail gradually shrink from the center of the cutter groove to two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122577436.5U CN216462204U (en) | 2021-10-26 | 2021-10-26 | Self-centering positioning reamer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122577436.5U CN216462204U (en) | 2021-10-26 | 2021-10-26 | Self-centering positioning reamer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216462204U true CN216462204U (en) | 2022-05-10 |
Family
ID=81443113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122577436.5U Active CN216462204U (en) | 2021-10-26 | 2021-10-26 | Self-centering positioning reamer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216462204U (en) |
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2021
- 2021-10-26 CN CN202122577436.5U patent/CN216462204U/en active Active
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