CN206415718U - A kind of hobboing cutter for spiral case making - Google Patents
A kind of hobboing cutter for spiral case making Download PDFInfo
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- CN206415718U CN206415718U CN201621324661.0U CN201621324661U CN206415718U CN 206415718 U CN206415718 U CN 206415718U CN 201621324661 U CN201621324661 U CN 201621324661U CN 206415718 U CN206415718 U CN 206415718U
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- hobboing cutter
- cutter
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- spiral case
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Abstract
The utility model is related to a kind of hobboing cutter for spiral case making, including hobboing cutter cutter hub, hobboing cutter cutter hub is central axial to be provided with a through hole, the hobboing cutter cutter hub outer rim is provided with cutter tooth, the knife side edge of the cutter tooth is recessed cardioid face, the recessed cardioid face is divided into AB sections, BC sections, CD sections, DE sections, wherein A points are the intersection point of outside circle and flute profile contour line, C points are the intersection point of flute profile contour line and the center of circle in circle of the vertical direction than indexing the round low 0.2mm of the heart, E points are the intersection point of root circle and flute profile contour line, described AB sections and DE sections is straight line, BC sections and CD sections are camber line and intersect at C points, air line distance accounts for 4/3rds to five/5ths of air line distance between whole A and E between the B and D.The utility model reduces the depression value in the recessed cardioid face of knife side edge of hobboing cutter, and then improves the quality of processed worm gear, makes to heave 0.002 0.005mm at the cyclotomy of worm gear region of engagement, further improves the transmission effect of whole vehicle electric power-assisted steering device.
Description
Technical field
The utility model is related to spiral case making technical field, more particularly, to a kind of hobboing cutter for spiral case making.
Background technology
The crudy of vital part-worm gear in vehicle electric power-assisted steering device, directly influences whole tubing string (power-assisted
Steering gear referred to as) quality, performance, abnormal sound and stability and reliability.The flute profile of worm gear is directly processed by worm gear hob
Into, the flute profile of hobboing cutter determines the credit rating of worm gear.So the quality of hobboing cutter and the processing to worm gear determine worm gear
The height of quality.
Dimensional tolerance, the form and position tolerance of present hobboing cutter, or how high-quality can not all process preferable snail to sharpness
Take turns flute profile.Because these hobboing cutters are all by the hobboing cutter that broken line revised law is repaired, wheel grinding goes out, its two cutting edge is straight entirely
Line side, rectilinear edge cuts the curved surface for inherently cutting out a recessed heart in screwfeed direction.Such hobboing cutter can cause processing
Worm gear depression value out reaches 0.025-0.03mm, has a strong impact on transmission effect.Less demanding part to recessed heart defect not
It can haggle over, but this recessed heart is the watershed of a quality and grade for power-assisted steering device.
The content of the invention
How the technical problems to be solved in the utility model is used for spiral case making by improving the structure of hobboing cutter there is provided one kind
Hobboing cutter, to improve hobboing cutter processing worm gear crudy.
Above-mentioned purpose of the present utility model is achieved by the following technical programs：
A kind of hobboing cutter for spiral case making, including hobboing cutter cutter hub, hobboing cutter cutter hub is central axial to be provided with a through hole, and it is special
Levy and be, the hobboing cutter cutter hub outer rim is provided with cutter tooth, and the knife side edge of cutter tooth is recessed cardioid face, and recessed cardioid face is divided into AB sections, BC
Section, CD section, DE section, wherein A points are the intersection point of outside circle and flute profile contour line, C points be flute profile contour line with the center of circle square vertically
To the intersection point of the circle than indexing the round low 0.2mm of the heart, E points are the intersection point of root circle and flute profile contour line, and AB sections and DE sections are straight
Line, BC sections and CD section is camber lines and intersect at C points, between B and D air line distance account for 3/5ths of air line distance between whole A and E to
4/5ths.
Preferably, the vertical range of C points to straight line where AB sections is 0.015~0.020mm, and BC sections are with CD Length Ratios
4:3。
Preferably, hobboing cutter cutter hub is cylindrical, it is cylindric so that processing, it is easier for installation.
Preferably, cutter tooth is helical teeth, and helical teeth is set when being processing for convenience scrap is fallen, and is radiated more square
Just.
Preferably, the material of hobboing cutter uses hard alloy, hard alloy have high, wear-resisting hardness, intensity and toughness preferably,
A series of premium properties such as heat-resisting, corrosion-resistant.
Preferably, recessed cardioid face relief grinding method processing is obtained, and the hobboing cutter processed by relief grinding method can avoid tradition
The defect for the hobboing cutter that processing method is processed, reaching improves the purpose of hobboing cutter flute profile, and then improves the matter for improving machining worm wheel
Amount.
Compared with prior art, the utility model has the advantages that：
By the depression value in the recessed cardioid face of the knife side edge for reducing hobboing cutter, the machining accuracy of turbine is improved, so that
The flute profile at the cyclotomy of worm gear region of engagement processed is in heave 0.002-0.005mm at convex, and worm gear region of engagement cyclotomy, and then
Worm gear, the accuracy of mesh of worm screw are improved, region of engagement is complete, be linear contact lay round and smooth switching during rotation, its tubing string power-assisted is stable, rotate
Steadily, vibrations and abnormal sound are minimum, have obtained being driven the vehicle electric power-assisted steering device of excellent effect.
Brief description of the drawings
Fig. 1 is the front view of the hobboing cutter for spiral case making.
Fig. 2 is the sectional view of the left view of the hobboing cutter for spiral case making.
Fig. 3 is the normal direction flute profile schematic diagram of the hobboing cutter for spiral case making.
Fig. 4 is the recessed cardioid face schematic diagram of normal direction flute profile of the hobboing cutter for spiral case making.
Embodiment
The utility model embodiment accompanying drawing being given for example only property explanation, it is impossible to be interpreted as to limitation of the present utility model.For
More preferable explanation the present embodiment, some parts of accompanying drawing have omission, zoomed in or out, and do not represent the size of actual product；It is right
For those skilled in the art, some known features and its explanation may be omitted and will be understood by accompanying drawing.With reference to
Drawings and examples are described further to the technical solution of the utility model.
Embodiment 1
The present embodiment provides a kind of hobboing cutter for spiral case making, as shown in Figures 1 to 4, including hobboing cutter cutter hub 1, hobboing cutter
Cutter hub 1 is cylindrical, it is cylindric so that processing, it is easier for installation.Hobboing cutter cutter hub 1 is central axial to be provided with a through hole 3, hobboing cutter
The outer rim of cutter hub 1 is provided with cutter tooth 2 along hobboing cutter cutter hub 1 is central axial, and cutter tooth 2 is helical teeth, and cutter tooth 2 is central axial along hobboing cutter cutter hub 1
It is arranged at the outer rim of hobboing cutter cutter hub 1.The knife side edge of cutter tooth 2 is recessed cardioid face, and recessed cardioid face is divided into four sections, is divided into AB, BC, CD, DE
Section, wherein AB, DE sections are straight line, and BC, CD sections are that camber line intersects at C points, and wherein A points are the friendship of outside circle and flute profile contour line
Point, C points are the intersection point of circle of the flute profile contour line with the center of circle than indexing the round low 0.2mm of the heart, and E points are root circle and flute profile contour line
Intersection point, between B and D straight length account for 4/5ths, the C points of straight length between whole A and E to straight line where AB sections it is vertical away from
From for 0.015mm, BC segment length is 2mm, and CD segment length is 1.5mm.
Scrap is fallen when the setting of wherein helical teeth is processing for convenience, and is radiated and more facilitated.
The recessed cardioid face in the side of cutter tooth 2 is machined with relief grinding method, and the hobboing cutter processed by relief grinding method can avoid passing
The defect for the hobboing cutter that system processing method is processed, reaching improves the purpose of hobboing cutter flute profile, and then improves raising machining worm wheel
Quality, can make to heave 0.002-0.005mm at the worm gear region of engagement cyclotomy processed.Embodiment 2
The present embodiment provides a kind of hobboing cutter for spiral case making, and it in place of the difference of embodiment 1 with being：C points are to AB
The distance of straight line is 0.020mm where section, and straight length accounts for 3/5ths of straight length between whole A and E between B and D, through in lattice
Sum gear inspection center is actually detected, can equally reach improvement hobboing cutter flute profile, and then make the worm gear region of engagement cyclotomy that processes
Heave 0.002-0.005mm purpose in place.
Embodiment 3
The present embodiment provides a kind of hobboing cutter for spiral case making, and it in place of the difference of embodiment 1 with being：BC segment length
For 2.4mm, CD segment length is 1.8mm.Hobboing cutter cutter tooth is changed by changing the length of BC sections and CD sections, and then accordingly
Highly, the parameters such as the modulus of hobboing cutter are determined accordingly.Through Gleason gear, inspection center is actually detected, can equally reach and change
Kind hobboing cutter flute profile, and then make purpose that 0.002-0.005mm is heaved at the worm gear region of engagement cyclotomy processed.
By the depression value in the recessed cardioid face of the knife side edge for reducing hobboing cutter, the machining accuracy of turbine is improved, so that
The flute profile at the cyclotomy of worm gear region of engagement processed is in heave 0.002-0.005mm at convex, and worm gear region of engagement cyclotomy, and then
Worm gear, the accuracy of mesh of worm screw are improved, region of engagement is complete, be linear contact lay round and smooth switching during rotation, its tubing string power-assisted is stable, rotate
Steadily, vibrations and abnormal sound are minimum, have obtained being driven the vehicle electric power-assisted steering device of excellent effect.
Above-described is only preferred embodiment of the present utility model, and the utility model is not limited to above example.Can
To understand, what those skilled in the art directly exported or associated on the premise of spirit of the present utility model and design is not departed from
Oher improvements and changes, think to be included in protection domain of the present utility model.
Claims (6)
1. a kind of hobboing cutter for spiral case making, including hobboing cutter cutter hub, hobboing cutter cutter hub is central axial to be provided with a through hole, its feature
It is, the hobboing cutter cutter hub outer rim is provided with cutter tooth, and the knife side edge of the cutter tooth is recessed cardioid face, and the recessed cardioid face is divided into AB
Section, BC section, CD section, DE section, wherein A points are the intersection point of outside circle and flute profile contour line, and C points are that flute profile contour line and the center of circle are being erected
Nogata is to the intersection point of the circle than indexing the round low 0.2mm of the heart, and E points are the intersection point of root circle and flute profile contour line, described AB section with
DE sections are straight line, and BC section and CD sections is camber lines and intersect at C points, and air line distance accounts for air line distance between whole A and E between the B and D
4/3rds to five/5ths.
2. it is used for the hobboing cutter of spiral case making according to claim 1, it is characterised in that the C points to straight line where AB sections
Vertical range is 0.015 ~ 0.020mm, and described BC sections is 4 with CD Length Ratios:3.
3. it is used for the hobboing cutter of spiral case making according to claim 1, it is characterised in that the hobboing cutter cutter hub is cylindrical.
4. it is used for the hobboing cutter of spiral case making according to claim 1, it is characterised in that the cutter tooth is helical teeth.
5. it is used for the hobboing cutter of spiral case making according to any one of Claims 1-4, it is characterised in that the material of the hobboing cutter
Using hard alloy.
6. it is used for the hobboing cutter of spiral case making according to claim 5, it is characterised in that the recessed cardioid face is added with relief grinding method
Work is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621324661.0U CN206415718U (en) | 2016-12-05 | 2016-12-05 | A kind of hobboing cutter for spiral case making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621324661.0U CN206415718U (en) | 2016-12-05 | 2016-12-05 | A kind of hobboing cutter for spiral case making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206415718U true CN206415718U (en) | 2017-08-18 |
Family
ID=59575235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621324661.0U Active CN206415718U (en) | 2016-12-05 | 2016-12-05 | A kind of hobboing cutter for spiral case making |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206415718U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114590060A (en) * | 2022-04-15 | 2022-06-07 | 雪松 | Hob assembly and pencil sharpener |
-
2016
- 2016-12-05 CN CN201621324661.0U patent/CN206415718U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114590060A (en) * | 2022-04-15 | 2022-06-07 | 雪松 | Hob assembly and pencil sharpener |
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