CN213857296U - Ball-end cutter - Google Patents
Ball-end cutter Download PDFInfo
- Publication number
- CN213857296U CN213857296U CN202022529257.XU CN202022529257U CN213857296U CN 213857296 U CN213857296 U CN 213857296U CN 202022529257 U CN202022529257 U CN 202022529257U CN 213857296 U CN213857296 U CN 213857296U
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- horizontal
- hole
- handle part
- thread
- cutter
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 4
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 4
- 239000011224 oxide ceramic Substances 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000003801 milling Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model relates to a cutter especially relates to a bulb sword, including hilt portion, axial cutting portion and bulb portion, be equipped with spiral week sword that the spiral set up in the axial cutting portion, be equipped with a plurality of end teeth on the bulb portion, its characterized in that: the upper end of the cutter handle part is provided with a vertical slit, the vertical slit divides the upper end of the cutter handle part into two half handles which are separated from each other left and right, the periphery of the cutter handle part is also provided with a horizontal through hole which is vertically communicated with the vertical slit, and the horizontal through hole simultaneously penetrates through the two half handles; a screw rod penetrates through the horizontal through hole, the screw rod is provided with two thread sections which are the same in thread pitch and opposite in thread direction, a nut seat is sleeved on each of the two thread sections and is in thread fit with the nut seat, and the nut seats are fixed on the outer ends of the horizontal through hole penetrating out of the two half handles respectively. The structure can effectively eliminate the clamping abrasion of the cutter handle part.
Description
Technical Field
The utility model relates to a cutter especially relates to a bulb sword.
Background
A milling cutter is a rotating tool for milling machining having one or more cutter teeth. When working, each cutter tooth cuts off the margin of working price in turn and intermittently. The milling cutter is mainly used for processing planes, steps, grooves, forming surfaces, cutting workpieces and the like on a milling machine. A conventional ball nose mill includes a shank portion, an axial cutting portion, and a ball head portion. When the tool is used, the tool shank is clamped and connected with a machine tool clamp, after the tool shank is machined for a period of time, the tool shank is loosened from the clamp due to abrasion of the tool shank, machining precision is affected, the tool has to be replaced, rejection rate is high, and service life is short.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved in the utility model is to overcome the above problems, and provide a ball-end cutter which can effectively eliminate the abrasion of the clamping of the handle part, and prolong the service life of the ball-end cutter.
The technical scheme of the utility model is that:
a bulb sword, including hilt portion, axial cutting portion and bulb portion, be equipped with spiral week sword of spiral setting in the axial cutting portion, be equipped with a plurality of end teeth on the bulb portion, its characterized in that: the upper end of the cutter handle part is provided with a vertical slit, the vertical slit divides the upper end of the cutter handle part into two half handles which are separated from each other left and right, the periphery of the cutter handle part is also provided with a horizontal through hole which is vertically communicated with the vertical slit, and the horizontal through hole simultaneously penetrates through the two half handles; a screw rod penetrates through the horizontal through hole, the screw rod is provided with two thread sections which are the same in thread pitch and opposite in thread direction, a nut seat is sleeved on each of the two thread sections and is in thread fit with the nut seat, and the nut seats are fixed on the outer ends of the horizontal through hole penetrating out of the two half handles respectively.
By the structure, the utility model discloses can drive two nut seats through rotatory screw rod and move outward along the screw rod level for two half handle upper ends are relative vertical crack slightly to the expansion and with anchor clamps between inside in close contact with, compensate both wearing and tearing spaces, life is longer.
Further, in the ball nose tool of the present invention, the two half shanks are symmetrically arranged with respect to the vertical slot.
Furthermore, in the ball-end cutter of the present invention, the nut seat and the half handle are welded together, so that the structure is reliable.
Further, in the ball nose tool of the present invention, the shank portion, the axial cutting portion, and the ball nose portion are integrally formed.
Further, in the ball nose cutter of the present invention, the horizontal through hole is located at a height 1/3-1/2 from the vertical slotted bottom. Because the part of the ball-end cutter contacted and clamped with the clamp is arranged above the horizontal through hole, the height range is set to reserve enough clamping length for the ball-end cutter.
Furthermore, the outer wall of the cutter handle part, which is positioned at the upper end of the horizontal through hole, is covered with a chromium oxide ceramic wear-resistant layer, so that the wear resistance of the clamping end is enhanced.
The utility model has the advantages that:
1. the utility model discloses simple structure, reasonable in design, the screw-thread fit of accessible screw rod and nut seat adjusts the range of opening of handle of a knife portion upper end and makes it can slightly outwards expand, effectively compensate and anchor clamps between the wearing and tearing space, further strengthen the compactness of being connected of handle of a knife portion and anchor clamps, can not cause whole sword to scrap because of handle of a knife portion wearing and tearing, avoid extravagant, prolong its life, reduction in production cost.
2. The chromium oxide ceramic wear-resistant layer is additionally arranged at the combination part of the upper end of the cutter handle part and the clamp, so that the wear-resistant performance is good, the wear loss is obviously reduced, and the service life of the cutter handle part is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic axial cross-sectional view of the present invention.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings:
referring to fig. 1 and 2, the ball nose tool according to the present embodiment includes a tool shank portion 1, an axial cutting portion 2, and a ball nose portion 3, where the tool shank portion 1, the axial cutting portion 2, and the ball nose portion 3 are integrally formed. The axial cutting part 2 is provided with a spiral peripheral edge which is spirally arranged, and the bulb part 3 is provided with a plurality of end teeth. The upper end of the cutter handle part 1 is provided with a vertical slit 4, the upper end of the cutter handle part 1 is divided into two half handles 5 which are separated from each other left and right by the vertical slit 4, and the two half handles 5 are symmetrically arranged left and right relative to the vertical slit 4.
The outer periphery of the cutter handle part 1 is also provided with a horizontal through hole 6 vertically communicated with the vertical slot 5, and the horizontal through hole 6 simultaneously penetrates through the two half handles 5; the horizontal through holes 6 are located at a height 1/3-1/2 from the bottom of the vertical slit 5. A screw rod 7 penetrates through the horizontal through hole 6, the screw rod 7 is provided with two thread sections with the same thread pitch and opposite thread directions, a nut seat 8 is sleeved on each of the two thread sections and is in thread fit with the thread section, the nut seats 8 are fixed on the outer ends of the horizontal through hole 6 penetrating out of the two half handles 5 respectively, and the nut seats 8 and the half handles 5 are welded into a whole. The outer wall of the cutter handle part 1, which is positioned at the upper end of the horizontal through hole 6, is covered with a chromium oxide ceramic wear-resistant layer.
In the structure, the outer wall of the cutter handle part 1, which is positioned at the upper end of the horizontal through hole 6, is a part for the contact clamping of the ball-end cutter and the clamp. After long-term use, a certain abrasion gap is generated, so that clamping is unstable, and the machining precision is influenced. Because the screw 7 has a double-section reverse structure, when the screw 7 is rotated, the two nut seats 8 can respectively move outwards in opposite directions through the thread matching effect of the screw 7 and the two nut seats 8, and at the moment, the upper end of the integrally welded half handle 5, namely the clamping part forms a deformation trend of slightly expanding outwards relative to the vertical slit 4, so that the screw can be in close contact with a clamp, and a gap generated by abrasion is made up to a certain extent.
The specific embodiments described herein are merely illustrative of the principles of the present invention and its efficacy, and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical idea of the present invention shall be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a ball-end cutter, includes handle of a knife portion, axial cutting portion and bulb portion, be equipped with spiral week sword that the spiral set up on the axial cutting portion, be equipped with a plurality of end teeth on the bulb portion, its characterized in that: the upper end of the cutter handle part is provided with a vertical slit, the vertical slit divides the upper end of the cutter handle part into two half handles which are separated from each other left and right, the periphery of the cutter handle part is also provided with a horizontal through hole which is vertically communicated with the vertical slit, and the horizontal through hole simultaneously penetrates through the two half handles; a screw rod penetrates through the horizontal through hole, the screw rod is provided with two thread sections which are the same in thread pitch and opposite in thread direction, a nut seat is sleeved on each of the two thread sections and is in thread fit with the nut seat, and the nut seats are fixed on the outer ends of the horizontal through hole penetrating out of the two half handles respectively.
2. The ball nose tool of claim 1, wherein: the two half handles are arranged symmetrically left and right about the vertical slot.
3. The ball nose tool of claim 1, wherein: the nut seat and the half handle are welded into a whole.
4. The ball nose tool of claim 1, wherein: the tool shank portion, the axial cutting portion and the ball head portion are integrally formed.
5. The ball nose tool of claim 1, wherein: the horizontal through holes are located at a height from the vertical slotted bottom 1/3-1/2.
6. The ball nose tool of claim 1, wherein: and a chromium oxide ceramic wear-resistant layer is covered on the outer wall of the cutter handle part positioned at the upper end of the horizontal through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022529257.XU CN213857296U (en) | 2020-11-05 | 2020-11-05 | Ball-end cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022529257.XU CN213857296U (en) | 2020-11-05 | 2020-11-05 | Ball-end cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213857296U true CN213857296U (en) | 2021-08-03 |
Family
ID=77052556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022529257.XU Active CN213857296U (en) | 2020-11-05 | 2020-11-05 | Ball-end cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213857296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115647411A (en) * | 2022-09-09 | 2023-01-31 | 株洲钻石切削刀具股份有限公司 | Turning tool with replaceable head |
-
2020
- 2020-11-05 CN CN202022529257.XU patent/CN213857296U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115647411A (en) * | 2022-09-09 | 2023-01-31 | 株洲钻石切削刀具股份有限公司 | Turning tool with replaceable head |
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