CN214557701U - Novel cutter for machining flat-bottom deep hole - Google Patents
Novel cutter for machining flat-bottom deep hole Download PDFInfo
- Publication number
- CN214557701U CN214557701U CN202120295667.4U CN202120295667U CN214557701U CN 214557701 U CN214557701 U CN 214557701U CN 202120295667 U CN202120295667 U CN 202120295667U CN 214557701 U CN214557701 U CN 214557701U
- Authority
- CN
- China
- Prior art keywords
- tool
- cutting edge
- degrees
- cutter
- value range
- 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.)
- Active
Links
Images
Landscapes
- Drilling Tools (AREA)
Abstract
The utility model relates to a novel cutter for flat deep hole machining belongs to machining specialized tool technical field, is to the defect of the unable depth of machining accuracy, flat blind hole of current cutter on pentahedron part and proposes, and it includes: the tool comprises a tool bar, a tool bit is arranged at the front end of the tool bar, a tool handle is arranged at the tail end of the tool bar, the tool bit, the tool bar and the tool handle are provided with the same rotating central shaft, two tool teeth are arranged on the tool bit along the circumferential direction of the rotating central shaft, a cutting edge is transversely arranged at the front end of each tool tooth, a cutting edge zone connected with each cutting edge is arranged on the side surface of each cutting edge, a chip discharge groove is formed between each cutting edge and the corresponding cutting edge zone in a surrounding mode, the length L of the tool bit is 50mm, the value range of the main relief angle alpha of each tool tooth is 16-20 degrees, the value range of the auxiliary offset angle beta is 1.5-2 degrees, the value range of the blade inclination angle gamma is 15-20 degrees, and the tool handle is of a flat-tail Morse taper shank structure. The utility model has the characteristics of machining precision is high, light in weight, tool changing are fast etc.
Description
The technical field is as follows:
the utility model belongs to the technical field of machining specialized tool, concretely relates to a novel cutter for flat deep hole processing.
Background art:
when a blind hole with the hole diameter of 479.5mm and the hole diameter of phi 72H6 multiplied by phi 72Js6 is machined on a pentahedron part, and the bottom of the blind hole is a plane blind hole, the position of the machined blind hole is close to the side wall due to the irregular shape of the machined part and the limitation of the structure of the machined part, and when the wall thickness is thin, a place for pressing a pressing plate cannot be provided, and if the clamping position is unreasonable, the part is easy to deform. When a flat-bottom blind hole is machined, the traditional machining method is a milling cutter difference compensation machining method or a boring machining method. When the milling cutter is used for utilizing a differential compensation method, the surface is machined by mainly using an end milling cutter, the side edges require cutting balance, so more than three cutter teeth are usually adopted, as the cutter teeth are spiral, more than two cutter teeth participate in cutting at the same time during milling, the work balance and chip removal are good, the machining efficiency is higher, but the end face of the end milling cutter is provided with a central hole, the end face of the end milling cutter cannot be fed downwards directly, in order to ensure that the bottom of the hole is a plane, a milling cutter smaller than the aperture is selected, the differential compensation method is utilized, as the cutter is fed for multiple times, the bottom of the hole is connected with a cutter, the plane of the bottom of the hole is bright and clean and has influence, and the position of a part machining hole group is close to the side wall, so that the milling cutter cannot be utilized for the differential compensation machining scheme due to the position limitation; when the boring machining is selected, the position of a part is close to the side wall, the diameter of the cutter bar is limited, and a long and thin cutter bar is needed, so that the rigidity and the strength of the cutter bar are affected, and the boring precision cannot be guaranteed. Therefore, the traditional milling cutter difference compensation processing method or the boring processing mode cannot realize the accurate processing of the blind holes.
The invention content is as follows:
the utility model discloses an overcome the defect of the unable depth of machining accuracy, flat blind hole of current cutter on pentahedron part, provide a novel cutter for flat deep hole machining, this cutter rigidity and intensity are high, can guarantee the parts machining quality, can improve the production efficiency of part again.
The utility model discloses a technical scheme lie in: a novel tool for deep hole machining of flat bottoms, comprising: the tool comprises a tool bar, wherein a tool bit is arranged at the front end of the tool bar, a tool handle is arranged at the tail end of the tool bar, the tool bit, the tool bar and the tool handle are provided with the same rotating central shaft, two tool teeth are arranged on the tool bit along the circumferential direction of the rotating central shaft, a cutting edge is transversely arranged at the front end of each tool tooth, a cutting edge zone connected with each cutting edge is arranged on the side surface of each cutting edge, a chip discharge groove is formed between each cutting edge and the corresponding cutting edge zone in a surrounding mode, the length L of the tool bit is 50mm, the value range of the main relief angle alpha of each tool tooth is 16-20 degrees, the value range of the auxiliary offset angle beta is 1.5-2 degrees, the value range of the blade inclination angle gamma is 15-20 degrees, and the tool handle is of a flat-tail Morse taper shank structure.
Preferably, the diameter D of the cutter head is greater than or equal to 50mm, the main relief angle alpha of the cutter teeth is 20 degrees, the range of the auxiliary deflection angle beta is 1.7-2 degrees, and the range of the blade inclination angle gamma is 17-20 degrees.
Preferably, the diameter D of the cutter head is less than 50mm, the main back angle alpha of the cutter teeth is 16 degrees, the range of the auxiliary deflection angle beta is 1.5-1.7 degrees, and the range of the blade inclination angle gamma is 15-17 degrees.
Preferably, the width d of the shank is 24 mm.
Preferably, the width d of the shank is 44 mm.
Preferably, the cutter head, the cutter bar and the cutter handle are of an integral structure.
The utility model has the advantages that:
1. the utility model discloses a tool bit adopts the sword tooth structure that two circumference set up, and the handle of a knife adopts flat tail morse taper shank structure, through the cutting edge of two horizontal settings of front end and the cooperation of two margins, has improved the utilization ratio of sword tooth and the surface finish quality of part, has reduced the friction between smear metal and the cutter through two chip grooves, is favorable to the chip breaking and the curling of control smear metal and the outflow of smear metal, has still strengthened the intensity and the machining precision of cutting edge.
2. The utility model discloses a handle of a knife adopts milling cutter morse taper shank and the flat tail form of drill bit to combine together for the effect of location and increase transmission moment of torsion avoids under operating condition cutter not hard up along the axial in main shaft hole or drill bushing, and the friction transmission moment of torsion through the afterbody conical surface is big, makes the taper shank have characteristics such as length is short, light in weight, the tool changing is fast.
Description of the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a left side view of FIG. 1;
wherein: 1 cutter head, 2 cutter bar, 3 cutter handles, 11 cutting edges, 12 blade zones and 13 chip grooves.
The specific implementation mode is as follows:
as shown in fig. 1 and fig. 2, the utility model relates to a novel cutter for flat bottom deep hole machining, include: the tool comprises a tool bar 2, wherein a tool bit 1 is arranged at the front end of the tool bar 2, the tool bit 1 is mainly used for cutting, and the width dimension of a milled key groove meets the technical requirement; the tail end of the cutter rod 2 is provided with a cutter handle 3, and the cutter handle 3 is mainly used for positioning and increasing transmission torque. The tool bit 1, the tool bar 2 and the tool handle 3 are of an integral structure, and the tool bit 1, the tool bar 2 and the tool handle 3 have the same rotating central shaft. In order to overcome the influence of radial cutting force, two sword teeth that set up along rotation center axle circumference on tool bit 1, cutting edge 11 has transversely been seted up to the front end of every sword tooth, and two cutting edges 11 cross the center of rotation center axle, and the cutting edge 11 of transversely setting can realize the axial and directly go into and feed, can drill out the flat bottom hole, guarantees parts machining size precision and hole bottom plane. A cutting edge 12 is arranged on the side of each cutter tooth, and the cutting edge 12 plays a guiding role. The chip groove 13 is arranged between the cutting edge 11 and the cutting edge 12, when milling, the cutting force distributed on two cutter teeth becomes couple, the radial force is mutually counteracted, the key groove with the same width as the rotation diameter is processed by one time, and the quality of the key groove is directly influenced by the size of the outer diameter of the cutter head, so the tolerance is strict, the precision is very high, and the general precision can reach about 0.01 mm. In the embodiment, the length L of the cutter head 1 is 50mm, the value range of the main clearance angle alpha of the cutter teeth is 16-20 degrees, the value range of the auxiliary deflection angle beta is 1.5-2 degrees, the value range of the blade inclination angle gamma is 15-20 degrees, and the cutter handle 3 adopts a flat-tail Morse taper shank structure.
When the diameter D of the cutter head 1 is larger than or equal to 50mm, the main clearance angle alpha of the cutter teeth is 20 degrees, the value range of the auxiliary deflection angle beta is 1.7-2 degrees, the value range of the blade inclination angle gamma is 17-20 degrees, the main deflection angle is 90 degrees, and the width D of the cutter handle 3 is 24 mm.
When the diameter D of the tool bit 1 is smaller than 50mm, the main back angle alpha of the tool tooth is 16 degrees, the value range of the auxiliary deflection angle beta is 1.5-1.7 degrees, the value range of the blade inclination angle gamma is 15-17 degrees, the main deflection angle is 90 degrees, and the width D of the tool shank 3 is 44 mm.
The working process is as follows:
the cutter of the embodiment is applied to a numerical control horizontal machining center, and when the diameter D of the cutter head 1 is greater than or equal to 50mm, the parameters of the numerical control horizontal machining center are set as follows: the rotating speed S is 100-; when the diameter D of the tool bit 1 is smaller than 50mm, the parameters of the numerical control horizontal machining center are set as follows: the rotating speed S is 100-120r/min, and the feeding speed F is 20 mm/min.
During processing, a tool bit 1 is utilized to process a phi 50 bottom hole of a part, and the depth dimension is ensured
And then carrying out rough and fine boring with phi 72 +/-0.01, namely ensuring the diameter requirement of the machined hole and the flat bottom of the hole, and playing a quick change role.
The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A novel tool for deep hole machining of flat bottoms, comprising: cutter arbor (2), be equipped with tool bit (1) at the front end of cutter arbor (2), be equipped with handle of a knife (3) at the tail end of cutter arbor (2), and tool bit (1), cutter arbor (2) and handle of a knife (3) have the same center of rotation axle, its characterized in that: the tool comprises a tool bit (1), two tool teeth are arranged on the tool bit (1) along the circumferential direction of a rotating central shaft, a cutting edge (11) is transversely arranged at the front end of each tool tooth, the two cutting edges (11) cross the center of the rotating central shaft, the transversely arranged cutting edges (11) achieve axial straight-in feeding, a cutting edge band (12) connected with each cutting edge (11) is arranged on the side surface of each cutting edge (11), a chip discharge groove (13) is formed between each cutting edge (11) and the corresponding cutting edge band (12), the length L of the tool bit (1) is 50mm, the value range of a main relief angle alpha of each tool tooth is 16-20 degrees, the value range of an auxiliary offset angle beta is 1.5-2 degrees, the value range of a cutting edge inclination angle gamma is 15-20 degrees, and a flat-tail Morse taper shank structure is adopted in the tool shank (3).
2. The novel tool for deep hole machining of flat bottoms according to claim 1, wherein: the diameter D of the cutter head (1) is larger than or equal to 50mm, the main back angle alpha of the cutter teeth is 20 degrees, the value range of the auxiliary deflection angle beta is 1.7-2 degrees, and the value range of the blade inclination angle gamma is 17-20 degrees.
3. The novel tool for deep hole machining of flat bottoms according to claim 1, wherein: the diameter D of the cutter head (1) is smaller than 50mm, the main back angle alpha of the cutter teeth is 16 degrees, the value range of the auxiliary deflection angle beta is 1.5-1.7 degrees, and the value range of the blade inclination angle gamma is 15-17 degrees.
4. The novel tool for deep hole machining of flat bottoms according to claim 2, wherein: the width d of the knife handle (3) is 24 mm.
5. The novel tool for deep hole machining of flat bottoms according to claim 3, wherein: the width d of the knife handle (3) is 44 mm.
6. The new tool for deep hole machining of flat bottom according to any of claims 1 to 5, characterized in that: the tool bit (1), the tool bar (2) and the tool handle (3) are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120295667.4U CN214557701U (en) | 2021-02-02 | 2021-02-02 | Novel cutter for machining flat-bottom deep hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120295667.4U CN214557701U (en) | 2021-02-02 | 2021-02-02 | Novel cutter for machining flat-bottom deep hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214557701U true CN214557701U (en) | 2021-11-02 |
Family
ID=78349531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120295667.4U Active CN214557701U (en) | 2021-02-02 | 2021-02-02 | Novel cutter for machining flat-bottom deep hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214557701U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101758A (en) * | 2021-12-23 | 2022-03-01 | 北京新风航天装备有限公司 | Self-guiding flat-bottom countersink drill for flat-bottom blind hole |
-
2021
- 2021-02-02 CN CN202120295667.4U patent/CN214557701U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114101758A (en) * | 2021-12-23 | 2022-03-01 | 北京新风航天装备有限公司 | Self-guiding flat-bottom countersink drill for flat-bottom blind hole |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2012096356A (en) | Orbital end mill | |
| CN214557701U (en) | Novel cutter for machining flat-bottom deep hole | |
| CN113695652B (en) | Indexable cutting insert and indexable cutting tool thereof | |
| CN113664267B (en) | Indexable milling cutter | |
| CN203281947U (en) | Positive and negative chamfering bit for machining plate parts | |
| CN104827102A (en) | Mechanically-clamped counterbore combined drill | |
| CN107671343A (en) | A kind of slotting cutter of single arc-shaped grooves | |
| CN204953988U (en) | Brill mills integrative cutter | |
| CN212094380U (en) | Turning tool for drilling/boring | |
| CN215509130U (en) | Drilling and milling integrated cutter | |
| CN216828695U (en) | Hole machining tool | |
| KR102316725B1 (en) | End mill Having Cutting Tooth Made of Polycrystalline Diamond | |
| JPH09192930A (en) | Thread cutter | |
| CN101700579B (en) | High-precision hole-machining drilling and boring cutter | |
| CN211331484U (en) | Turning, milling and drilling compound tool | |
| CN208214420U (en) | It is a kind of to bore milling integrated molding milling cutter | |
| JPH03245914A (en) | Drilling tool | |
| CN207508305U (en) | A kind of hole machined compound tool | |
| CN107442830A (en) | A kind of slotting cutter for being used to finish and its processing method | |
| CN206677315U (en) | It is a kind of to be used to finish the assembled reamer to wheel bore | |
| CN108380943B (en) | Drilling and milling integrated milling cutter | |
| CN101780554A (en) | drilling reamer | |
| CN214720856U (en) | Multifunctional combined cutter for drilling, turning and milling | |
| JPH08257816A (en) | Tool for tapered hole | |
| CN205110893U (en) | Quick centering combination chamfer is bored |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |