CN212634454U - Four-edge ball knife - Google Patents
Four-edge ball knife Download PDFInfo
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- CN212634454U CN212634454U CN202020875849.4U CN202020875849U CN212634454U CN 212634454 U CN212634454 U CN 212634454U CN 202020875849 U CN202020875849 U CN 202020875849U CN 212634454 U CN212634454 U CN 212634454U
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- cutter
- cutting
- ball
- chip
- chip removal
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Abstract
The utility model relates to a four-blade ball cutter, which comprises a cutter head and a cutter handle, wherein the front end of the cutter head is a cutting part, the cutting part comprises a ball head and a rod part, four spiral cutting edges extend from the central point of the ball head to the periphery of the rod part, a tooth gap part in a ridge structure is arranged between the two cutting edges on the ball head, and diamonds in a pyramid structure are embedded on the tooth gap part; be equipped with glossy chip removal cambered surface between two cutting edges on the pole portion, the chip groove has been seted up at chip removal cambered surface middle part, the width at the middle section of chip groove is greater than the width at both ends. The utility model embeds diamond on the tool bit, which ensures that the tool bit has enough processing force to ensure the processing quality when processing; a smooth chip removal arc surface is arranged between the two cutting edges on the rod part, a chip removal groove is formed in the middle of the chip removal arc surface, the width of the middle section of the chip removal groove is larger than the width of the two ends, the phenomenon of chip accumulation is avoided, and the cutting efficiency is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of the cutter technique and specifically relates to a four-blade ball sword.
Background
A ball cutter is a tool commonly used in the cutting field, and performs a machining process on a workpiece by a blade on a surface thereof. The existing ball cutter is generally provided with a cutter handle and a cutter head, wherein a spiral cutting edge is arranged on the cutter head, a concave part of the spiral cutting edge forms a chip discharge groove, chips cut during processing of a workpiece are guided to the lower part and discharged, and therefore the chips are prevented from influencing the cutting process.
At present, when a ball cutter is machined at the beginning, the machining force at the end is found to be insufficient, so that a machined part cannot meet the precision requirement; in addition, the chips are discharged only by the chip grooves of the concave parts, and the phenomenon of chip accumulation still exists, so that the cutting efficiency is greatly reduced.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a four-edge ball cutter.
The utility model provides a technical scheme that its technical problem adopted is: a four-edge ball cutter comprises a cutter head and a cutter handle, wherein the front end of the cutter head is a cutting part, the cutting part comprises a ball head and a rod part, four spiral cutting edges extend from the center of the ball head to the periphery of the rod part, a tooth gap part in a ridge structure is arranged between the two cutting edges on the ball head, and diamonds in a pyramid structure are embedded in the tooth gap part; be equipped with glossy chip removal cambered surface between two cutting edges on the pole portion, the chip groove has been seted up at chip removal cambered surface middle part, the width at the middle section of chip groove is greater than the width at both ends.
The smooth chip removal cambered surface can increase the speed of chip removal, but can cause certain piling up, influence processing, and the chip groove has the function of temporary holding bits, and the piece can be piled up in the middle section of chip groove more after along with ball sword motion, so the width that sets up chip groove middle section is big than the width at both ends, avoids the piece to pile up, guarantees cutting efficiency.
Further defined, the backlash portion comprises an upper slope surface and a lower slope surface, and the diamond is embedded on the upper slope surface. When the cutting action of the cutting edge is small at the beginning of processing, the diamond is embedded on the upper slope surface to help cutting, and chips after cutting are discharged from the lower slope surface.
Further limit, the length of the cutter head is equal to that of the cutter handle, and a positioning bump is arranged on the cutter head at a position close to the cutter handle. The length of the cutter head is equal to that of the cutter handle, so that the strength of the cutter head is ensured; the positioning lug is convenient to position on a power shaft of the machine tool.
Further defined, the length of the cutting portion is 3/4 the length of the cutting head.
In order to facilitate the installation of the tool handle, the middle section of the tool handle is further limited to be provided with external threads.
The utility model has the advantages that: the utility model embeds diamond on the tool bit, which ensures that the tool bit has enough processing force to ensure the processing quality when processing; a smooth chip removal arc surface is arranged between the two cutting edges on the rod part, a chip removal groove is formed in the middle of the chip removal arc surface, the width of the middle section of the chip removal groove is larger than the width of the two ends, the phenomenon of chip accumulation is avoided, and the cutting efficiency is greatly improved.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the cutting tool comprises a tool bit, 2 parts of a tool shank, 3 parts of diamonds, 4 parts of positioning bumps, 11 parts of a cutting part, 21 parts of external threads, 111 parts of a ball head, 112 parts of a rod part, 113 parts of a cutting edge, 114 parts of an upper slope surface, 115 parts of a lower slope surface, 116 parts of a chip removal arc surface and 117 parts of a chip removal groove.
Detailed Description
The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the four-edge ball cutter of the present embodiment includes a 40mm cutter head 1 and a 40mm cutter handle 2, the front end of the cutter head 1 is a 30mm cutting portion 11, the cutting portion 11 includes a ball head 111 and a rod portion 112, four spiral cutting edges 113 are formed by extending from a central point of the ball head 111 to an outer periphery of the rod portion 112, a backlash portion having a ridge structure is disposed between two cutting edges 113 on the ball head 111, the backlash portion includes an upper slope surface 114 and a lower slope surface 115, and diamonds 3 having a pyramid structure are embedded on the upper slope surface 114; a smooth chip discharge arc surface 116 is arranged between the two cutting edges 113 on the rod part 112, a chip discharge groove 117 is formed in the middle of the chip discharge arc surface 116, and the width of the middle section of the chip discharge groove 117 is larger than the width of the two ends.
In this embodiment, a positioning protrusion 4 is disposed on the tool bit 1 at a position close to the tool holder 2, and an external thread 21 is disposed on a middle section of the tool holder 2.
In the four-edged ball cutter of the present embodiment, the runout of each edge with respect to the shank 2 is controlled to be 0.006mm in the manufacturing process.
The four-blade ball cutter of the embodiment has strong practicability, long service life and high production efficiency.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (5)
1. The utility model provides a four-edge ball sword, includes tool bit and handle of a knife, the front end of tool bit is cutting portion, its characterized in that: the cutting part comprises a ball head and a rod part, four spiral cutting edges are formed by extending from the center point of the ball head to the periphery of the rod part, a tooth space part in a ridge structure is arranged between the two cutting edges on the ball head, and diamonds in a pyramid structure are embedded in the tooth space part; be equipped with glossy chip removal cambered surface between two cutting edges on the pole portion, the chip groove has been seted up at chip removal cambered surface middle part, the width at the middle section of chip groove is greater than the width at both ends.
2. The four-edged ball cutter of claim 1, wherein: the tooth space part comprises an upper slope surface and a lower slope surface, and the diamond is embedded on the upper slope surface.
3. The four-edged ball cutter of claim 1, wherein: the length of the cutter head is equal to that of the cutter handle, and a positioning lug is arranged at a position, close to the cutter handle, on the cutter head.
4. The four-edged ball cutter of claim 3, wherein: the length of the cutting part is 3/4 the length of the cutter head.
5. The four-edged ball cutter of claim 1, wherein: the middle section of the knife handle is provided with external threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020875849.4U CN212634454U (en) | 2020-05-22 | 2020-05-22 | Four-edge ball knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020875849.4U CN212634454U (en) | 2020-05-22 | 2020-05-22 | Four-edge ball knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212634454U true CN212634454U (en) | 2021-03-02 |
Family
ID=74793613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020875849.4U Active CN212634454U (en) | 2020-05-22 | 2020-05-22 | Four-edge ball knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212634454U (en) |
-
2020
- 2020-05-22 CN CN202020875849.4U patent/CN212634454U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |