CN107116269B - Novel staggered tooth step forming cutter - Google Patents
Novel staggered tooth step forming cutter Download PDFInfo
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- CN107116269B CN107116269B CN201710481303.3A CN201710481303A CN107116269B CN 107116269 B CN107116269 B CN 107116269B CN 201710481303 A CN201710481303 A CN 201710481303A CN 107116269 B CN107116269 B CN 107116269B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
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- Mechanical Engineering (AREA)
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- Optics & Photonics (AREA)
- Drilling Tools (AREA)
Abstract
The novel staggered tooth step forming cutter comprises a cutter head, wherein the cutter head is provided with first forming cutter teeth and second forming cutter teeth which are distributed in a staggered mode along the circumferential direction, a first-stage stepped notch is formed in the head end of the first forming cutter tooth, the edges of two notches of the first-stage stepped notch are first forming edges, a second-stage stepped notch is formed in the head end of the second forming cutter tooth, the two edges of an outer corner of the second-stage stepped notch are second forming edges, and the first forming edges and the second forming edges are used for jointly forming right-angle contours of the outer corner inside the second-stage step of a workpiece. The outer section of the first forming blade and the middle section of the second forming blade form a two-stage step forming profile together, the outer section of the first forming blade and the second forming blade are respectively positioned on two different cutter teeth, and when the cutter head rotates, the outer section of the first forming blade and the second forming blade alternately form a workpiece. The outer section of the first forming blade and the middle section of the second forming blade can jointly form the workpiece into a second-stage step.
Description
Technical Field
The invention relates to the field of machining cutters, in particular to a novel staggered tooth step forming cutter.
Background
Some workpieces need to be processed into secondary steps, and the outer corner inside the secondary steps needs to be processed into right-angle profiles. In the prior art, the shape of each cutter tooth is consistent, and each cutter tooth is provided with a concave turning part which is used for forming the outline of the outer convex corner. However, due to the small length of the cutter teeth, the concave corners of the cutter teeth are always provided with round corners, so that the outer corners inside the steps machined by the forming cutter in the prior art are provided with round corners (see fig. 6 and 8), and the outer corners are machined into right-angle profiles.
Disclosure of Invention
In view of the shortcomings of the prior art, it is an object of the present invention to provide a novel staggered step forming knife that enables the outer convex corner inside the secondary step to be machined to a right angle profile without creating rounded corners.
In order to solve the technical problems, the invention adopts the following technical scheme:
the novel staggered tooth step forming cutter comprises a cutter head, wherein the cutter head is provided with first forming cutter teeth and second forming cutter teeth which are distributed in a staggered mode along the circumferential direction, a first-stage stepped notch is formed in the head end of the first forming cutter tooth, the edges of two notches of the first-stage stepped notch are first forming edges, a second-stage stepped notch is formed in the head end of the second forming cutter tooth, the two edges of an outer corner of the second-stage stepped notch are second forming edges, and the first forming edges and the second forming edges are used for jointly forming right-angle contours of the outer corner inside the second-stage step of a workpiece.
Specifically, the first forming edge comprises a head section which is inclined towards the central axis of the forming chamfer cutter.
Specifically, the first and second formed cutter teeth each have a side edge, the first axial relief angle of the side edge being a1, a1 being 4 DEG to 6 DEG, the second axial relief angle of the side edge being a2, a2 being 8 DEG to 10 deg.
Specifically, at least one section of the second forming edge is parallel to the axial direction of the forming chamfer cutter, the first axial back angle of the section of the second forming edge parallel to the axial direction of the forming chamfer cutter is b1,4 degrees less than or equal to b1 less than or equal to 6 degrees, and the second axial back angle of the section of the second forming edge parallel to the axial direction of the forming chamfer cutter is b2,8 degrees less than or equal to b2 less than or equal to 10 degrees.
Specifically, at least one section of the second forming edge is perpendicular to the axial direction of the forming chamfer cutter, the first axial backward angle of the section of the second forming edge perpendicular to the axial direction of the forming chamfer cutter is c1,4 degrees less than or equal to c1 less than or equal to 6 degrees, and the second axial backward angle of the section of the second forming edge perpendicular to the axial direction of the forming chamfer cutter is c2,8 degrees less than or equal to c2 less than or equal to 10 degrees.
Specifically, at least one section of the first forming edge is perpendicular to the axial direction of the forming chamfer cutter, the first axial rear angle of the section of the first forming edge perpendicular to the axial direction of the forming chamfer cutter is d1, d1 is less than or equal to 4 degrees and less than or equal to 6 degrees, and the second axial rear angle of the section of the second forming edge perpendicular to the axial direction of the forming chamfer cutter is d2, d2 is less than or equal to 8 degrees and less than or equal to 10 degrees.
Specifically, the first axial relief angle of the head section of the first molding blade is e1,4 DEG-e 1-6 DEG, and the second axial relief angle of the side blade is e2,8 DEG-e 2-10 deg.
Specifically, the included angle between the head section of the first forming blade and the central axis of the chamfering tool is f, and the included angle is more than or equal to 43 degrees and less than or equal to 48 degrees.
The invention has the beneficial effects that:
the outer section of the first forming blade and the middle section of the second forming blade form a two-stage step forming profile together, the outer section of the first forming blade and the second forming blade are respectively positioned on two different cutter teeth, and when the cutter head rotates, the outer section of the first forming blade and the second forming blade alternately form a workpiece. The outer section of the first forming blade and the middle section of the second forming blade can jointly form the workpiece into a second-stage step. Because the outer section of the first forming blade and the middle section of the second forming blade are straight edges and have no round corners, the outer corner inside the second step can be processed into a right-angle profile by the outer section of the first forming blade and the middle section of the second forming blade together, and the round corners are not generated.
Drawings
FIG. 1 is a partial view of a novel staggered step forming knife of the present invention;
FIG. 2 is an axial view of a tool bit according to the present invention;
FIG. 3 is a partial schematic view of a tool tip according to the present invention in a semi-cut state, without the angled first forming edge;
FIG. 4 is a partial schematic view of a tool tip according to the present invention in a semi-cut state, with a beveled first shaped edge disposed therein;
FIG. 5 is a partial view in axial section of the side edge of the present invention;
FIG. 6 is an exploded view of the cutting shapes of a first formed cutter tooth and a second formed cutter tooth, wherein a solid line x is a schematic view of the cutting shape of the second formed cutter tooth, and a broken line y is a schematic view of the cutting shape of the first formed cutter tooth;
FIG. 7 is a schematic view of the cutting shape of the novel staggered step forming knife of the present invention;
FIG. 8 is a perspective view of a workpiece in which a secondary step has been machined in the prior art;
FIG. 9 is a partial view of the novel staggered step forming knife of the present invention;
fig. 10 is another partial view of the novel staggered step forming knife of the present invention.
The reference numerals in the drawings are:
1. the cutter head, 2, a first formed cutter tooth, 21, a first formed cutter edge, 3, a second formed cutter tooth,
31. And a second shaped blade.
Detailed Description
Specific embodiments of the present invention will be further described below with reference to the accompanying drawings.
Referring to fig. 1, 2, 9 and 10, the novel staggered tooth step forming cutter provided by the invention comprises a cutter head 1, wherein the cutter head 1 is provided with first forming cutter teeth 2 and second forming cutter teeth 3 which are distributed in a staggered manner along the circumferential direction, the head end of the first forming cutter tooth 2 is provided with a first step notch, two notch edges of the first step notch are first forming blades 21, the head end of the second forming cutter tooth 3 is provided with a second step notch, two edges of an outer corner of the second step notch are second forming blades 31, and the first forming blades 21 and the second forming blades 31 are used for jointly forming right-angle outlines of the outer corner inside the second step of a workpiece. . (see FIG. 3).
Specifically, in combination with fig. 1, 2, 9, and 10, the first molding edge 21 includes a head section (see fig. 4) inclined toward the central axis of the molding chamfer cutter, and specifically, the head section of the first molding edge 21 forms an angle f with the central axis of the chamfer cutter, f=45°. The head section of the first forming blade 21 can chamfer the tail end of the step, namely the staggered tooth forming chamfering tool can simultaneously process the step with the corner outline being a right angle and chamfer through processing of one procedure, so that the process that at least three tools are needed to be completed by three procedures is simplified into a process that only one tool is needed, thereby avoiding tool changing time and greatly improving processing efficiency; in addition, the number of cutters can be reduced, and the cost of the cutters is reduced.
Specifically, referring to fig. 5, each of the first molded cutter tooth 2 and the second molded cutter tooth 3 has a side edge with a first axial relief angle of a1, a1=5°, and a second axial relief angle of a2, a2=9°. The structure enhances the wear resistance of each side edge and prolongs the service life of the cutter; in addition, the interference between each side blade and the surface to be processed of the workpiece is reduced; moreover, each side edge is sharper, so that the processing quality of the novel staggered tooth step forming cutter on the surface of a workpiece is improved, and burrs are avoided on the surface of a product.
Specifically, in connection with fig. 4, one of the second forming edges 31 is parallel to the axial direction of the forming chamfer cutter, the first axial relief angle of the second forming edge 31 parallel to the axial direction of the forming chamfer cutter is b1, b1=5° (see fig. 5 for this relief angle arrangement), and the second axial relief angle of the second forming edge 31 parallel to the axial direction of the forming chamfer cutter is b2, b2=9°. The structure enhances the wear resistance of the second forming edge 31 which is parallel to the axial direction of the forming chamfer cutter, and improves the service life of the cutter; in addition, interference between each of the second molding edges 31 parallel to the axial direction of the molding chamfer cutter and the surface to be machined of the workpiece is reduced; moreover, the second forming edge 31 parallel to the axial direction of the forming chamfer cutter is sharper, so that the processing quality of the novel staggered tooth step forming cutter on the surface of the workpiece is improved, and burrs on the surface of a product are avoided.
Specifically, in connection with fig. 4, one of the second forming edges 31 is perpendicular to the axial direction of the forming chamfer cutter, the first axial relief angle of the second forming edge 31 perpendicular to the axial direction of the forming chamfer cutter is c1, c1=5° (see fig. 5 for this relief angle arrangement), and the second axial relief angle of the second forming edge 31 perpendicular to the axial direction of the forming chamfer cutter is c2, c2=9°. The structure enhances the wear resistance of each second forming edge 31 perpendicular to the axial direction of the forming chamfer cutter, and improves the service life of the cutter; in addition, interference between each of the second molding edges 31 perpendicular to the axial direction of the molding chamfer cutter and the surface to be machined of the workpiece is reduced; moreover, the second forming edge 31 perpendicular to the axial direction of the forming chamfer cutter is sharper, so that the processing quality of the novel staggered tooth step forming cutter on the surface of the workpiece is improved, and burrs on the surface of a product are avoided.
Specifically, in connection with fig. 4, a first axial relief angle of a segment of the first profiled edge 21 perpendicular to the axial direction of the profiled chamfer cutter is d1, d1=5° (see fig. 5 for this relief angle arrangement) and a second axial relief angle of a segment of the second profiled edge 31 perpendicular to the axial direction of the profiled chamfer cutter is d2, d2=9°. The structure enhances the wear resistance of the first forming edge 21 perpendicular to the axial direction of the forming chamfer cutter, and improves the service life of the cutter; in addition, interference between the first forming edge 21 perpendicular to the axial direction of the forming chamfer cutter and the surface to be processed of the workpiece is reduced; furthermore, the first forming edges 21 perpendicular to the axial direction of the forming chamfering tool are sharper, so that the processing quality of the novel staggered tooth step forming tool on the surface of a workpiece is improved, and burrs are avoided on the surface of a product.
Specifically, with reference to fig. 4, the first axial relief angle of the head section of the first forming blade 21 is e1, e1=5°, and the second axial relief angle of the head section of the first forming blade 21 is e2, e2=9°. The structure enhances the wear resistance of the head section of each first forming blade 21 and improves the service life of the cutter; in addition, interference between the head section of each of the first forming blades 21 and the surface to be processed of the workpiece is reduced; furthermore, the head section of each first forming blade 21 is sharper, so as to improve the processing quality of the novel staggered tooth step forming blade on the surface of the workpiece and avoid burrs on the surface of the product.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the claims, which follow, as defined in the claims.
Claims (2)
1. Novel staggered tooth step forming cutter is characterized in that: the tool bit is provided with first formed tool teeth and second formed tool teeth which are distributed in a staggered manner along the circumferential direction, the head end of the first formed tool tooth is provided with a first step notch, the edges of the two notches of the first step notch are first formed edges, the head end of the second formed tool tooth is provided with a second step notch, the two edges of the outer corner of the second step notch are second formed edges, and the first formed edges and the second formed edges are used for jointly forming the right-angle profile of the outer corner inside the second step of the workpiece;
the first formed cutter tooth and the second formed cutter tooth are provided with side edges, the first axial rear angle of the side edges is a1, a1 is more than or equal to 4 degrees and less than or equal to 6 degrees, and the second axial rear angle of the side edges is a2, a2 is more than or equal to 8 degrees and less than or equal to 10 degrees;
wherein at least one section of the second forming edge is parallel to the axial direction of the forming chamfering tool, the first axial backward angle of the section of the second forming edge which is parallel to the axial direction of the forming chamfering tool is b1, b1 is more than or equal to 4 degrees and less than or equal to 6 degrees, and the second axial backward angle of the section of the second forming edge which is parallel to the axial direction of the forming chamfering tool is b2, b2 is more than or equal to 8 degrees and less than or equal to 10 degrees;
wherein at least one section of the second forming edge is perpendicular to the axial direction of the forming chamfering cutter, the first axial backward angle of the section of the second forming edge perpendicular to the axial direction of the forming chamfering cutter is c1, c1 is more than or equal to 4 degrees and less than or equal to 6 degrees, and the second axial backward angle of the section of the second forming edge perpendicular to the axial direction of the forming chamfering cutter is c2, c2 is more than or equal to 8 degrees and less than or equal to 10 degrees;
wherein at least one section of the first forming edge is perpendicular to the axial direction of the forming chamfering tool, the first axial backward angle of the section of the first forming edge perpendicular to the axial direction of the forming chamfering tool is d1, d1 is more than or equal to 4 degrees and less than or equal to 6 degrees, and the second axial backward angle of the section of the second forming edge perpendicular to the axial direction of the forming chamfering tool is d2, d2 is more than or equal to 8 degrees and less than or equal to 10 degrees;
the first axial backward angle of the head section of the first forming blade is e1, e1 is more than or equal to 4 degrees and less than or equal to 6 degrees, and the second axial backward angle of the side blade is e2, e2 is more than or equal to 8 degrees and less than or equal to 10 degrees;
the included angle between the head section of the first forming blade and the central axis of the chamfering tool is f, and the f is more than or equal to 43 degrees and less than or equal to 48 degrees.
2. The novel staggered step forming knife according to claim 1, wherein: the first forming edge includes a head section that is inclined toward a central axis of the forming chamfer cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481303.3A CN107116269B (en) | 2017-06-22 | 2017-06-22 | Novel staggered tooth step forming cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481303.3A CN107116269B (en) | 2017-06-22 | 2017-06-22 | Novel staggered tooth step forming cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107116269A CN107116269A (en) | 2017-09-01 |
| CN107116269B true CN107116269B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710481303.3A Active CN107116269B (en) | 2017-06-22 | 2017-06-22 | Novel staggered tooth step forming cutter |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191000B (en) * | 2014-09-28 | 2017-01-25 | 江西杰浩硬质合金工具有限公司 | Staggered teeth-structured four-blade hole expanding drill |
| CN104209565B (en) * | 2014-09-28 | 2016-08-31 | 江西杰浩硬质合金工具有限公司 | A kind of three sword forming cutters |
| CN205764062U (en) * | 2016-05-26 | 2016-12-07 | 四川飞亚汽车零部件有限公司 | A kind of dead eye process tool |
| CN206028762U (en) * | 2016-09-12 | 2017-03-22 | 江苏戴梦德钻石科技有限公司 | Sword welds formula shaping sword |
| CN206952291U (en) * | 2017-06-22 | 2018-02-02 | 广东刀父精工科技有限公司 | A kind of new side set stepped knife |
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2017
- 2017-06-22 CN CN201710481303.3A patent/CN107116269B/en active Active
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| CN107116269A (en) | 2017-09-01 |
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