CN206464651U - A kind of thin-wall pipe internal thread machining cutter - Google Patents
A kind of thin-wall pipe internal thread machining cutter Download PDFInfo
- Publication number
- CN206464651U CN206464651U CN201720083473.1U CN201720083473U CN206464651U CN 206464651 U CN206464651 U CN 206464651U CN 201720083473 U CN201720083473 U CN 201720083473U CN 206464651 U CN206464651 U CN 206464651U
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- China
- Prior art keywords
- internal thread
- blades
- thin
- knife bar
- wall pipe
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of thin-wall pipe internal thread machining cutter, include knife bar, set of blades is installed on described knife bar one end, the set of blades is made up of 36 identical blades being coaxially continuously assemblied on knife bar, it is close together between each blade, and the basal plane of blade differs 10 ° successively since one end of set of blades.The process tool that the utility model is provided, relative to existing thread tap, the utility model realizes the function of milling chip breaking cutting, cutting deformation is small, cutting force is small, localized contact cutter stress is small, and indurative 316 stainless steel is easily processed using the problems such as the rotten tooth of screw thread, screw tap wander off during conventional tap tapping so as to solve；In addition, the cutter that the utility model is provided is assembled by knife bar and some identical blades, its processing cost is low, solves the problems, such as the cutter of unconventional internal thread hole.
Description
Technical field
The utility model is related to Tool Design technical field, and in particular to a kind of thin-wall pipe internal thread machining cutter.
Background technology
316 stainless steel thin-wall internal thread tube pieces are commonly used for space satellite field because it can meet some specific uses, category
Hardly possible processing part.The thin-wall internal thread pipe fitting of stainless steel, wall thickness 0.7mm, is added using traditional process tool thread tap
If work, there can be following problem：
1) the thin poor rigidity of pipe wall, easy elastic deformation；The good plasticity of 316 stainless steel materials, toughness etc. are also easy to produce seriously
Processing hardening phenomenon, easily to Tool in Cutting cutting edge cause damage；Both of which determines that the cutting force of process tool can not mistake
Greatly, use during conventional tap tapping because whorl side faces the extruding of screw tap cutter tooth side, make the screw tap axial thrust load be usually
The several times of tangential force, so cutting force is larger with joint efforts, it may appear that attack to enter phenomenon.
2) during conventional screw tap processing stainless steel material, due to machined material good toughness and intensity, and elongation percentage compared with
It is good, and the cutting force of screw tap is excessive, easily coheres generation product with cutter in process and cuts knurl, so as to pull screw-type
Face, generates rotten tooth.
3) in the screw tap course of work, the radial load not waited during multiple tooth cutting will cause screw tap axis relative to hole when larger
Axis offset, screw tap is wandered off.
4) space satellite field, is commonly encountered the processing problems of unconventional internal thread hole.
Utility model content
In order to solve the above problems, the utility model provides a kind of thin-wall pipe internal thread machining cutter, includes knife
Set of blades is installed, the set of blades is by 36 identical knives being coaxially continuously assemblied on knife bar on bar, described knife bar one end
Piece is constituted, and is close together between each blade, and the basal plane of blade differs 10 ° successively since one end of set of blades.
Preferably, the blade includes inner ring and outer ring, the inner ring is used to be set in the knife bar；The outer ring
Order is linked in sequence and constituted by the first circular arc, the second circular arc that radius is R2 and cutting edge that radius is R1, before cutting edge
Knife face is connected with the first circular arc, and the rear knife face of cutting edge is connected with the second circular arc, wherein R2 ＞ R1.
Preferably, first circular arc is entirely accounting for about the 3/4 of whole blade outer ring.
Preferably, the main angle of cutting edge α of the cutting edge is 2 °, the main edge clearance angle β of the cutting edge is 10 °.
Preferably, two front cutting edge angle thetas of the cutting edge are identical with the inclined-plane angle of internal thread two that need to be processed
Preferably, the blade thickness is equal with needing processed internal thread pitch.
Preferably, the knife bar is made of GCr15 bearing steels, the blade is made of M42 cobalt-containing high speed steels.
Preferably, set of blades installation portion is provided with one end of the knife bar, and the end of set of blades installation portion is provided with
Threaded portion, the set of blades is set on the set of blades installation portion, and is tightened in the threaded portion by a nut and pad
The upper fixation set of blades.
Preferably, the tool sharpening is in workpiece internal thread, to the knife bar away from the one end for being provided with set of blades
Install and carry out locating clip tightly, the workpiece carries out axial feed relative to the fixed cutter, the cutter is rotated in workpiece
On cut internal thread.
The utility model is allowed to compared with prior art, have the following advantages that and accumulate due to using above technical scheme
Pole effect：
The thin-wall pipe internal thread machining cutter that the utility model is provided, using the set of blades of 36 blade compositions so that
Cutting edge one helical annular of formation on 36 blades so that only one of which cutting point on the often circle of set of blades, this cutter
Relative to existing thread tap, the function of milling chip breaking cutting is realized, this cutting way cutting deformation is small, and cutting force is small,
Localized contact cutter stress is small, is attacked so as to fundamentally solve and easily process indurative 316 stainless steel using conventional screw tap
The problems such as rotten tooth of screw thread, screw tap wander off during silk；In addition, the cutter that the utility model is provided is assembled by knife bar and some identical blades
Form, its processing cost is low, solve the problems, such as the cutter of unconventional internal thread hole.
Brief description of the drawings
With reference to accompanying drawing, by hereafter state detailed description, above-mentioned and other spy of the present utility model can be more clearly understood that
Seek peace advantage, wherein：
The structural representation for the thin-wall pipe internal thread machining cutter that Fig. 1 provides for the utility model；
Fig. 2 is the partial enlarged drawing at A in Fig. 1；
Fig. 3 is the structural representation of knife bar in the utility model；
Fig. 4 is the front view of blade in the utility model；
Fig. 5 is the side view of blade in the utility model；
Fig. 6 is the partial enlarged drawing at B in Fig. 4；
Fig. 7 is the partial enlarged drawing at C in Fig. 5；
The thin-wall stainless steel pipe fitting schematic diagram that Fig. 8 is processed for needed for；
Fig. 9 is the partial enlarged drawing at D in Fig. 8.
Embodiment
Referring to the accompanying drawing for showing the utility model embodiment, the utility model is described in more detail.However, this reality
It can in many different forms be realized with new, and should not be construed as being limited by the embodiment herein proposed.On the contrary, proposing
These embodiments be in order to reach fully and complete disclosure, and make those skilled in the art understand completely this practicality newly
The scope of type.In these accompanying drawings, for clarity, the size and relative size in layer and region may be exaggerated.
Reference picture 1-7, the utility model provides a kind of thin-wall pipe internal thread machining cutter, includes knife bar 1, knife bar
Set of blades is installed, set of blades is made up of 36 identical blades 2 being coaxially continuously assemblied on knife bar 1, each blade on 1 one end
It is close together between 2, and the basal plane of blade 2 differs 10 ° successively since one end of set of blades.What the utility model was provided adds
Work cutter, using the set of blades of 36 blade compositions so that cutting edge one helical annular of formation on 36 blades so that knife
Only one of which cutting point on the often circle of piece group, this cutter realizes milling chip breaking cutting relative to existing thread tap
Function, this cutting way cutting deformation is small, and cutting force is small, and localized contact cutter stress is small, so as to solve easily processing hardening
Property 316 stainless steels using the problems such as the rotten tooth of screw thread, screw tap wander off during conventional tap tapping；In addition, what the utility model was provided
Cutter is assembled by knife bar and some identical blades, and its processing cost is low, solves the problems, such as the cutter of unconventional internal thread hole
In the present embodiment, with reference to Fig. 1 and Fig. 3, set of blades installation portion 101, set of blades peace are provided with one end of knife bar 1
The diameter in dress portion 101 is less than the diameter of the remainder of knife bar 1, and 36 orders of blade 2 are set on set of blades installation portion 101；Knife
The end of piece group installation portion 101 is provided with the order of blade 2 of threaded portion 102,36 and is set on set of blades installation portion 101, then leads to
Cross a nut 4 and pad 3 is tightened on threaded portion 102 to fix set of blades.
In the present embodiment, with reference to Fig. 4-7, blade 2 includes inner ring and outer ring；A diameter of D of inner ring, and inner ring diameter
Match with the diameter of the cutter group installation portion 101 of knife bar 1, to ensure that blade 2 is set on knife bar 1 by inner ring.
The outer ring order of blade 2 is by the first circular arc 201 that radius is R1, the second circular arc 202 that radius is R2 and cutting
Sword 203 is linked in sequence composition, and the rake face 2031 of cutting edge 203 is connected with the first circular arc 201,203 rear knife face 2032 and
Two circular arcs 202 are connected, wherein R2 ＞ R1.In the present embodiment, the arrangement base of blade is used as using the rake face 2031 of cutting edge 203
Standard, therefore after 36 orders are installed on knife bar 1, with the first blade benchmark the most, sequentially rotate it to same direction
Remaining blade so that 10 ° are differed between the rake face 2031 of each blade.
Wherein, the first circular arc 201 is entirely accounting for 3/4 or so of whole blade outer ring, preferably accounts for 3/4；The cutting of blade
Sword 203 connects in inner surface of pipe fitting and processes internal thread, and the space formed between less first circular arc 201 of radius and pipe fitting is used for
Chip removal, the proportion of the first circular arc 201 is larger, is conducive to increasing chip space.
Wherein, as shown in Figure 6, the tie point of 2031 and first circular arc of rake face 201 is located on the center line of blade；Cutting
The main angle of cutting edge α of main sword 2034 is 2 °, and main edge clearance angle β is 10 °, the specific value of certain anterior angle α and rear angle beta be not limited to
Upper described, still, to prevent cutting edge from breaking, the anterior angle and relief angle of cutting edge are suitably adjusted according to processing workpiece material, should
Ensure tool strength, while taking into account the sharpness of cutter.Therefore, in the present embodiment, the front-and-back angle α of main sword 2034 is preferably cut
It it is 10 ° for 2 °, β
Wherein, in conjunction with 4-9, the angle theta of two front cutting edge 2033 of cutting edge and the inclined-plane of internal thread two that need to be processed are pressed from both sides
Angle is identical, and blade thickness d1 is equal with the internal thread pitch d2 for needing to be processed, so as to ensure to process required screw thread
Shape.
In the present embodiment, the external diameter of nut 4 and pad 3 be less than blade outer ring minimum outer diameter at external diameter, i.e., nut 4 and
The diameter of pad 3 is less than 2R1.
In the present embodiment, knife bar 1 is made of GCr15 bearing steels, and blade 2 is made of M42 cobalt-containing high speed steels, so that
It ensure that the intensity of whole cutter.
In the present embodiment, when cutter is used for processing, knife bar is installed away from the one end for being provided with set of blades and carried out
Positioning is clamped, and workpiece carries out axial feed relative to fixed cutter, and cutter rotates and internal thread is cut on workpiece.Specifically
, the other end 103 of knife bar can be blocked installed in a machine tool chief axis three in, realize that positioning is clamped, workpiece is arranged on using fixture
On lathe bracket, axial feed is realized.This processing mode is conducive to preventing walking the problem of cutting wanders off.
To sum up, a kind of thin-wall pipe internal thread machining cutter that the utility model is provided, by designing internal thread cutting knife
Piece and the threading tool being made up of blade and knife bar, realize the function of milling chip breaking cutting, reduce cutting force, adapt to
The thin easy elastic deformation of wall, the hardening of stainless steel material easy processing during thin-wall pipe internal thread machining, both cutting force all can not
Too big requirement, easily wanders off, the quality problems of rotten tooth etc. when solving stainless steel thin-wall pipe fitting internal thread machining.The utility model
The cutter of offer is assembled by knife bar and some identical blades, and its processing cost is low, solves the cutter of unconventional internal thread hole
Problem
Those skilled in the art should be understood that the utility model can be realized without de- with many other concrete forms
From the spirit or scope of itself.Although having been described for case study on implementation of the present utility model, it should be understood that the utility model should not be limited
Be made as these embodiments, spirit of the present utility model that those skilled in the art can define such as appended claims and
Within the scope of make and changing and modifications.
Claims (9)
1. a kind of thin-wall pipe internal thread machining cutter, it is characterised in that include and be provided with knife on knife bar, described knife bar one end
Piece group, the set of blades is made up of 36 identical blades being coaxially continuously assemblied on knife bar, and one is close between each blade
Rise, and the basal plane of blade differs 10 ° successively since one end of set of blades.
2. thin-wall pipe internal thread machining cutter according to claim 1, it is characterised in that the blade includes inner ring
And outer ring, the inner ring is for being set in the knife bar；Outer ring order is R2 by the first circular arc that radius is R1, radius
The second circular arc and cutting edge be linked in sequence composition, the rake face of cutting edge is connected with the first circular arc, the rear knife face of cutting edge
It is connected with the second circular arc, wherein R2 ＞ R1.
3. thin-wall pipe internal thread machining cutter according to claim 2, it is characterised in that first circular arc is whole
Account for 3/4 or so of whole blade outer ring.
4. thin-wall pipe internal thread machining cutter according to claim 2, it is characterised in that before the main sword of the cutting edge
Angle α is 2 °, and the main edge clearance angle β of the cutting edge is 10 °.
5. the thin-wall pipe internal thread machining cutter according to claim 2 or 4, it is characterised in that the two of the cutting edge
Front cutting edge angle theta is identical with the inclined-plane angle of internal thread two that need to be processed.
6. thin-wall pipe internal thread machining cutter according to claim 1 or 2, it is characterised in that the blade thickness with
Need processed internal thread pitch equal.
7. thin-wall pipe internal thread machining cutter according to claim 1 or 2, it is characterised in that the knife bar is used
GCr15 bearing steels are made, and the blade is made of M42 cobalt-containing high speed steels.
8. thin-wall pipe internal thread machining cutter according to claim 1 or 2, it is characterised in that one end of the knife bar
On be provided with set of blades installation portion, and the end of set of blades installation portion is provided with threaded portion, and the set of blades is set in the knife
On piece group installation portion, and it is tightened in by a nut and pad on the threaded portion and fixes the set of blades.
9. thin-wall pipe internal thread machining cutter according to claim 1 or 2, it is characterised in that the tool sharpening exists
During workpiece internal thread, the knife bar is installed away from the one end for being provided with set of blades and carries out locating clip tightly, the workpiece is relative
Axial feed is carried out in the fixed cutter, the cutter rotates and internal thread is cut on workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720083473.1U CN206464651U (en) | 2017-01-22 | 2017-01-22 | A kind of thin-wall pipe internal thread machining cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720083473.1U CN206464651U (en) | 2017-01-22 | 2017-01-22 | A kind of thin-wall pipe internal thread machining cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206464651U true CN206464651U (en) | 2017-09-05 |
Family
ID=59703231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720083473.1U Withdrawn - After Issue CN206464651U (en) | 2017-01-22 | 2017-01-22 | A kind of thin-wall pipe internal thread machining cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206464651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052478A (en) * | 2017-01-22 | 2017-08-18 | 上海应用技术大学 | A kind of thin-wall pipe internal thread machining cutter |
-
2017
- 2017-01-22 CN CN201720083473.1U patent/CN206464651U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052478A (en) * | 2017-01-22 | 2017-08-18 | 上海应用技术大学 | A kind of thin-wall pipe internal thread machining cutter |
| CN107052478B (en) * | 2017-01-22 | 2020-04-07 | 上海应用技术大学 | Thin-wall pipe fitting internal thread machining cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190416 Address after: 200235 Caobao Road, Xuhui District, Shanghai, No. 120-121 Co-patentee after: Shanghai Yishu Motor Technology Co., Ltd. Patentee after: Shanghai Institute of Technology Address before: 200235 Caobao Road, Xuhui District, Shanghai, No. 120-121 Co-patentee before: SHANGHAI YINGSHU POWER STATION ACCESSORIES CO., LTD. Patentee before: Shanghai Institute of Technology |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170905 Effective date of abandoning: 20200407 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170905 Effective date of abandoning: 20200407 |