CN208231022U - A kind of wedge thread milling cutter - Google Patents
A kind of wedge thread milling cutter Download PDFInfo
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- CN208231022U CN208231022U CN201820429876.1U CN201820429876U CN208231022U CN 208231022 U CN208231022 U CN 208231022U CN 201820429876 U CN201820429876 U CN 201820429876U CN 208231022 U CN208231022 U CN 208231022U
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- cutting edge
- wedge thread
- milling
- milling cutter
- wedge
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Abstract
The utility model relates to a kind of wedge thread milling cutters, wedge thread milling cutter includes integrally formed milling body, milling body has clamping part, the milling body outer circumference surface is equipped at least two groups cutting edge, the top of the cutting edge has 30 degree of lozenges with processing wedged internal screw thread, and the circumferential lengths of the cutting edge are gradually reduced from the front to the back along direction of feed.Since the cutting edge stress of milling process middle and back is smaller, it is gradually reduced cutting edge circumferential lengths from the front to the back along direction of feed, the heat-sinking capability of screw cutter is not only effectively increased, but also expands the width of chip space, ensure that the chip removal ability of screw cutter.
Description
Technical field
The utility model relates to a kind of wedge thread milling cutters.
Background technique
The structure of wedge-shaped internal screw thread is to have a lozenges on crest, and the angle of the lozenges and horizontal plane is 30 degree,
The lozenges can effectively prevent bolt looseness when being packed into bolt, while the also bigger advantage with automatic centering and coupling mechanism force,
Currently, wedge thread fastener is gradually applied in field of aerospace, but requirement of the wedge-shaped internal screw thread to machining accuracy is more
Height, difficulty of processing is larger, and since the form of thread of wedge thread is unsymmetric structure, holds when using screw tap machining internal thread
Easily occur to shake and then machining accuracy is caused to reduce.
Authorization Notice No. is that the patent document of CN2792677Y discloses a kind of loosening-preventing self-lock screw-thread screw tap, which includes
Knife bar and the cutter head being mounted on knife bar, cutter head are equipped with sword valve, and length is consistent from front to back for sword valve circumferential lengths, due to wedge shape
The requirement on machining accuracy of internal screw thread is higher, and the chip removal ability and heat-sinking capability to screw tap have higher requirements, the sword of above-mentioned screw tap
Length is consistent from front to back for valve circumferential lengths, and the clast that tapping process plug tap front end generates is easy the product at the sword valve at rear portion
It collects together, not only reduces the heat-sinking capability of screw tap, and clast may scratch the wedge-shaped internal screw thread after processing, reduce the matter of screw thread
Amount.
Utility model content
The purpose of this utility model is to provide a kind of wedge thread milling cutters, to solve sword valve circumferential lengths in the prior art
From front to back length it is consistent and the technical issues of reduce the heat-sinking capability of screw tap.
To achieve the above object, wedge thread milling cutter provided by the utility model adopts the following technical scheme that a kind of wedge shape
Screw cutter, including integrally formed milling body, milling body have clamping part, and the milling body outer circumference surface is equipped with
The top of at least two groups cutting edge, the cutting edge has 30 degree of lozenges with processing wedged internal screw thread, the week of the cutting edge
It is gradually reduced from the front to the back to length along direction of feed.
The beneficial effects of the utility model are: the cutting edge stress due to milling process middle and back is smaller, the utility model
In be gradually reduced cutting edge circumferential lengths from the front to the back along direction of feed, not only effectively increase the heat radiation energy of screw cutter
Power, but also the width of chip space is expanded, it ensure that the chip removal ability of screw cutter.
Preferably, front end of the every group of cutting edge in rotation direction forms helix, and every group of cutting edge is in rotation direction
Rear end form rear tangent line, the distance between the helix and rear tangent line gradually decrease from the front to the back along direction of feed so that institute
Cutting edge circumferential lengths are stated accordingly to reduce.Make cutting edge by distance everywhere corresponding between setting helix and rear tangent line
Circumferential lengths are gradually reduced.The helix being equipped with can be improved the sharpness of cutting edge, pass through the helical angle of tangent line after setting
Guarantee that width of chip space satisfies the use demand, and then improves heat dissipation performance.
Preferably, the helical angle of the helix is not more than 15 degree.Cutting edge when experiment shows helical angle less than 15 degree
Sharpness is higher, and the wedge thread inner surface smoothness after processing is preferable.
The clamping part is rectangular or round.The clamping part of square structure is suitable for most milling machines, and circle can be effective
The concentricity for guaranteeing aid portion and cutting edge is conducive to the high speed rotation of milling machine, improves product roughness requirements.
Preferably, the milling body outer circumference surface is equipped with three groups of cutting edges.
Preferably, the material of the milling body is wolfram steel.The hardness of wolfram steel is only second to diamond, and high rigidity is suitable for adding
The higher wedge-shaped internal screw thread of work required precision, is ideal material of cutting-tool.
Preferably, the surface of the milling body is equipped with CrNAl coating by physical deposition methods.Improve the wear-resisting journey of milling cutter
Degree and surface roughness, and then improve the precision of the wedge thread processed.
Detailed description of the invention
Fig. 1 provides the schematic diagram of wedge thread milling cutter embodiment for the utility model；
Fig. 2 is the left view of wedge thread milling cutter embodiment schematic diagram shown in Fig. 1；
Fig. 3 is the structural schematic diagram of cutting edge in wedge thread milling cutter embodiment shown in Fig. 1；
In attached drawing: 1- milling body, 2- clamping part, 3- cutting edge front end, 4- cutting edge rear end, 5- chip space, 6- wedge shape
Face.
Specific embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The utility model provides the specific embodiment of wedge thread milling cutter, as shown in Figure 1 to Figure 3, wedge thread milling cutter packet
Integrally formed milling body 1 is included, milling body uses wolfram steel material, and passes through physical deposition methods on 1 surface of milling body
Equipped with CrNAl coating, milling body 1 has circular clamping part, and the outer circumference surface of milling body 1 is equipped with three groups of cutting edges,
The top of cutting edge has 30 degree of lozenges 6, and front end formation helix of the every group of cutting edge in rotation direction, and every group
Tangent line after rear end of the cutting edge in rotation direction is formed, wherein the helical angle of helix is 15 degree, and the helical angle of rear tangent line is
10 degree, so that the distance between helix and rear front are gradually reduced from the front to the back along direction of feed.Wherein, circular aid portion
The concentricity that can effectively ensure that aid portion and cutting edge is conducive to the high speed rotation of milling machine, improves the requirement of product roughness.
The advantage of this wedge thread milling cutter embodiment is: the circumferential lengths of cutting edge along direction of feed from the front to the back gradually
Reduce, one ensure that the heat-sinking capability of screw cutter, and two increase the width of chip space, avoid the accumulation of clast；One
The milling body of forming structure can inhibit the vibration generated when wedge-shaped internal thread machining to the full extent；And wolfram steel material is hard
Degree is high, meets the required precision of wedge-shaped internal thread machining, and the interior threaded surface roughness processed is lower；The surface of milling body
It is equipped with CrNAl coating by physical deposition methods, the rub proofness of milling cutter can be further increased, and then improve service life.
The helix that every group of cutting edge front end is formed in the embodiment of above-mentioned wedge thread milling cutter is not less than 15 degree, at other
Helical angle can be adjusted according to service condition in embodiment.
The helical angle of helix is 15 degree in the embodiment of above-mentioned wedge thread milling cutter, the helical angle of rear tangent line is 10 degree,
Certain adjustment can also be carried out to the helical angle of the two according to actual use situation in other embodiments, to meet actual use
Situation is to the requirement such as heat dissipation, sharpness of screw cutter.
Clamping part in the embodiment of above-mentioned wedge thread milling cutter is circle, and rectangular add can be used in other embodiments
Hold portion.
The rear tangent line that every group of cutting edge rear end is formed in the embodiment of above-mentioned wedge thread milling cutter is to be parallel to milling body
The straight line of axis, the shape of tangent line after being rationally designed in other embodiments according to the distribution of stress on milling cutter axis direction
Or angle, to improve the performances such as milling cutter antidetonation, heat dissipation, chip removal.
Wolfram steel material is used in the embodiment of above-mentioned wedge thread milling cutter, is wanted in other embodiments meeting machining accuracy
Under the premise of asking, other materials is can be used to reduce production cost in milling body.
CrNAl coating is machined on milling body by physical deposition methods in the embodiment of above-mentioned wedge thread milling cutter,
Likewise, CrNAl coating can be cancelled under the premise of meeting requirement on machining accuracy.
Milling body is equipped with three groups of cutting edges in the embodiment of above-mentioned wedge thread milling cutter, in other embodiments can root
The group number of cutting edge is increased or decreased according to service condition.
Claims (7)
1. a kind of wedge thread milling cutter, including integrally formed milling body, milling body has clamping part, the milling body
Outer circumference surface is equipped at least two groups cutting edge, the top of the cutting edge with 30 degree of lozenges with processing wedged internal screw thread,
It is characterized by: the circumferential lengths of the cutting edge are gradually reduced from the front to the back along direction of feed.
2. wedge thread milling cutter according to claim 1, it is characterised in that: front end of the every group of cutting edge in rotation direction
Formed helix, tangent line after rear end of the every group of cutting edge in rotation direction is formed, between the helix and rear tangent line away from
From being gradually decreased from the front to the back along direction of feed so that the cutting edge circumferential lengths are accordingly reduced.
3. wedge thread milling cutter according to claim 2, it is characterised in that: the helical angle of the helix is not more than 15
Degree.
4. wedge thread milling cutter according to claim 1, it is characterised in that: the clamping part is rectangular or round.
5. wedge thread milling cutter as claimed in any of claims 1 to 4, it is characterised in that: outside the milling body
Periphery is equipped with three groups of cutting edges.
6. wedge thread milling cutter according to claim 5, it is characterised in that: the material of the milling body is wolfram steel.
7. wedge thread milling cutter according to claim 6, it is characterised in that: the surface of the milling body is heavy by physics
Area method is equipped with CrNAl coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820429876.1U CN208231022U (en) | 2018-03-28 | 2018-03-28 | A kind of wedge thread milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820429876.1U CN208231022U (en) | 2018-03-28 | 2018-03-28 | A kind of wedge thread milling cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208231022U true CN208231022U (en) | 2018-12-14 |
Family
ID=64585494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820429876.1U Active CN208231022U (en) | 2018-03-28 | 2018-03-28 | A kind of wedge thread milling cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN208231022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560768A (en) * | 2019-09-12 | 2019-12-13 | 汇专绿色工具有限公司 | Cutting tool and tool bit structure thereof |
| CN114101815A (en) * | 2021-11-10 | 2022-03-01 | 台州中驰智谷科技有限公司 | Spiral fluted tap |
-
2018
- 2018-03-28 CN CN201820429876.1U patent/CN208231022U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560768A (en) * | 2019-09-12 | 2019-12-13 | 汇专绿色工具有限公司 | Cutting tool and tool bit structure thereof |
| CN114101815A (en) * | 2021-11-10 | 2022-03-01 | 台州中驰智谷科技有限公司 | Spiral fluted tap |
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