CN202239970U - Finger cutter for gear processing of barreled tooth flank - Google Patents
Finger cutter for gear processing of barreled tooth flank Download PDFInfo
- Publication number
- CN202239970U CN202239970U CN2011203536351U CN201120353635U CN202239970U CN 202239970 U CN202239970 U CN 202239970U CN 2011203536351 U CN2011203536351 U CN 2011203536351U CN 201120353635 U CN201120353635 U CN 201120353635U CN 202239970 U CN202239970 U CN 202239970U
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- China
- Prior art keywords
- gear
- tooth
- cutter
- crown
- cutting edge
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Abstract
The utility model discloses a finger cutter for gear processing of a barreled tooth flank in which the tooth form of a wheel tooth is an involute tooth form angle. The finger cutter is characterized by comprising a cutter body (8) and a cutter head (9), wherein the shape and the size of the cutting edge of the cutter head (9) are the same as those of a tooth groove (13) at a position where the gear barrel form of the barreled tooth flank is largest; the cutting edge comprises an involute section (10) and a circular arc section (12); and the top end of the cutting edge is in full circular arc smooth connection. After barreled tooth flank processed with the finger cutter is applied to a gear coupling, and when the angles of input and output shafts are deviated, good linear contact instead of point contact between the wheel tooth and a tooth ring of the barreled tooth flank can be ensured; meanwhile, the tooth crest of the cutter has a full circular arc structure, so that the bending strength of the tooth root of a gear is ensured, the service performance of the gear coupling is improved, and the service life of the gear coupling is prolonged.
Description
Technical field
The utility model relates to a kind of crown-shaved gear processing and uses milling cutter, and finger cutter is used in specifically a kind of crown-shaved gear processing.
Background technology
In machine driving, influence in order to improve input, output disalignment and to transmit the stationarity problem, adopt variable-angle shaft coupling (being crown gear coupling) in the engineering usually.Because the present general conventional generating processing of adopting of the processing of barreled tooth flank drags completion through numerical control gear hobbing or mechanical lever, with formation tooth length direction cydariform, and is built up by one group of gradual change position involute along tooth length direction profile of tooth.In use along with the variation of input and output axis; The position of the profile of tooth involute that uses is also in continuous variation, thereby causes the barreled tooth flank gear teeth to degenerate with contacting of gear ring, contacted by line to become a contact; Contact stress is increased, had a strong impact on the service life of shaft coupling.For this reason, be gradual change profile angle profile of tooth with the tooth Shape Design of the crown-shaved gear gear teeth, the profile of tooth of gear teeth tooth length direction is a cydariform, the identical unanimity of the profile of tooth of gear teeth radial section, tooth root is the wholecircle arc.Like this, be applied to gear coupling, when input, output shaft generation angular deflection, can both guarantee that the barreled tooth flank gear teeth and gear ring have good line to contact rather than the some contact, the serviceability and the service life of having improved gear coupling.
Summary of the invention
The profile of tooth that the purpose of the utility model provides a kind of gear teeth is that finger cutter is used in the crown-shaved gear processing of gradual change profile angle.
The utility model is to adopt following technical scheme to realize its goal of the invention, and it is involute gear that finger cutter, said crown-shaved gear are used in a kind of crown-shaved gear processing; Tooth portion cylindrical is spherical, and the profile of tooth of the crown-shaved gear gear teeth is a gradual change profile angle profile of tooth, and gear teeth tooth length direction is a cydariform; The identical unanimity of the profile of tooth of the radial section of the gear teeth, tooth root are the wholecircle arc, and described profile angle is a normal profile angle; Said finger cutter comprises cutter hub, cutter head; The shape of cutter head cutting edge is identical with the slot form size at the maximum position of crown-shaved gear cydariform, and cutting edge comprises involute section, arc section, and the top of cutting edge is a wholecircle arc light slip.
Be provided with the easement curve section between the involute section of the said cutting edge of the utility model and the arc section.
The involute section of the said cutting edge of the utility model is to utilize the space width at the maximum position of crown-shaved gear cydariform to confirm the transverse tooth thickness of cutter head, and its functional relation is:
S
g＝P－S
x
S
x＝S×（R
x／R）－2R
x(invα
x－invα)
Wherein: S
gBe the transverse tooth thickness of cutter head, P is the tooth pitch of gear, S
xFor any knuckle-tooth of gear is thick, S is the reference circle transverse tooth thickness of gear, α
xBe any round pressure angle of gear, α is the pressure angle of graduated circle of gear, R
xBe any radius of circle of gear, R is the reference radius of gear.
The involute section of the said cutting edge of the utility model is to utilize gear parameter to calculate to confirm its coordinate figure, and relational expression is:
X
g=R
xsinω
x?
Y
g=R
xcosω
x
Wherein: R
xBe any radius of circle of gear, ω
xBe between cog center half-angle
ω
x=(π－4ξtgα)／2Z+Δ
s／mZ＋(invα
x－invα)
Wherein: ξ is the gear modification coefficient, Δ
sBe the thick attenuate amount α of gear compound graduation knuckle-tooth
xBe any round pressure angle of gear, α is the pressure angle of graduated circle of gear, and Z is the number of teeth of gear, and m is the modulus of gear.
Owing to adopt technique scheme; The utility model has been realized goal of the invention preferably; The barreled tooth flank that processes is applied to gear coupling, when input, output shaft generation angular deflection, can both guarantee that the barreled tooth flank gear teeth and gear ring have good line to contact rather than the some contact; Simultaneously, the milling cutter tooth top is the design of wholecircle arc, has guaranteed the teeth bending strength of gear, the serviceability and the service life of having improved gear coupling.
Description of drawings
Fig. 1 is the utility model milling cutter tip 9 design diagrams;
Fig. 2 is the user mode sketch map of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Embodiment 1:
A kind of crown-shaved gear; Said crown-shaved gear is an involute gear, and tooth portion cylindrical is spherical, and the profile of tooth of the crown-shaved gear gear teeth 14 is a gradual change profile angle profile of tooth; The gear teeth 14 tooth length directions are cydariform; The identical unanimity of the profile of tooth of the radial section of the gear teeth 14, tooth root are the wholecircle arc, and described profile angle is a normal profile angle.
Can know by Fig. 1; Finger cutter is used in a kind of crown-shaved gear processing; Said finger cutter comprises cutter hub 8, cutter head 9; The shape of cutter head 9 cutting edges is identical with the teeth groove 13 shape sizes at the maximum position of crown-shaved gear cydariform, and cutting edge comprises involute section 10, arc section 12, and the top of cutting edge is a wholecircle arc light slip.
The utility model is provided with easement curve section 11 between the involute section 10 of cutting edge and the arc section 12 in the time can not smoothly being connected between involute section 10 and the arc section 12, present embodiment easement curve section 11 is an oblique line.
The utility model is simple for calculating; The profile of tooth of assurance cutter head 9 and the shape size of crown-shaved gear are in full accord; The involute section 10 of said cutting edge is to utilize teeth groove 13 width at the maximum position of crown-shaved gear cydariform to confirm the transverse tooth thickness of cutter head 9, and its functional relation is:
S
g＝P－S
x
S
x＝S×（R
x／R）－2R
x(invα
x－invα)
Wherein: S
gBe the transverse tooth thickness of cutter head, P is the tooth pitch of gear, S
xFor any knuckle-tooth of gear is thick, S is the reference circle transverse tooth thickness of gear, α
xBe any round pressure angle of gear, α is the pressure angle of graduated circle of gear, R
xBe any radius of circle of gear, R is the reference radius of gear.
Can know that by Fig. 2 when the utility model used, tooth base 3 must guarantee technological datum position dimension precision; To guarantee the uniformity of product clamping position; The alignment pin 2 of at first tooth base 3 being aimed at mandrels 1 mandrel 1 of packing into, technological datum position one end is near step 7, and alignment pin 2 adopts the cylinders design; Limit the rotary freedom of tooth base 3 in process, guarantee the profile accuracy of product; Feel relieved with tapered sleeve 4 again, do not receive the influence of taper hole manufacturing tolerance to guarantee tooth base 3 clampings; The open washer 5 of packing into then with serrated nut 6 fastening getting final product, adopts fine thread 6 fastening, helps the clamping, locking of workpiece, adopts open washer 5 designs simultaneously, reduces the clamping time of tooth base 3, has improved production efficiency.Add man-hour, adopt forming process processing profile of tooth, on CNC milling machine, divide tooth processing; Milling cutter adopts finger cutter; Milling cutter is walked circular trace or tooth base 3 is walked circular trace (present embodiment is that milling cutter is walked circular trace in the teeth directional direction) with workbench in the teeth directional direction in the teeth directional direction, whenever process a cydariform face of the gear teeth 14 after, carry out calibration; Reprocess the cydariform face of another gear teeth 14, until processing whole gear teeth 14.
The barreled tooth flank of the utility model processing is applied to gear coupling, when input, output shaft generation angular deflection, can both guarantee that the barreled tooth flank gear teeth 14 and gear ring have good line to contact rather than the some contact; Simultaneously, milling cutter tooth top wholecircle arc designs, and has guaranteed the teeth bending strength of gear, the serviceability and the service life of having improved gear coupling.
Embodiment 2:
Present embodiment is for guaranteeing the profile of tooth and the on all four involute form of gear parameter of cutter head 9, and the involute section 10 of said cutting edge is to utilize gear parameter to calculate to confirm its coordinate figure, and relational expression is:
X
g=R
xsinω
x?
Y
g=R
xcosω
x
Wherein: R
xBe any radius of circle of gear, ω
xBe between cog center half-angle
ω
x=(π－4ξtgα)／2Z+Δ
s／mZ＋(invα
x－invα)
Wherein: ξ is the gear modification coefficient, Δ
sBe the thick attenuate amount α of gear compound graduation knuckle-tooth
xBe any round pressure angle of gear, α is the pressure angle of graduated circle of gear, and Z is the number of teeth of gear, and m is the modulus of gear.Surplus with embodiment 1.
Claims (4)
1. use finger cutter, said crown-shaved gear be involute gear in crown-shaved gear processing, and tooth portion cylindrical is a sphere; The profile of tooth of the crown-shaved gear gear teeth (14) is a gradual change profile angle profile of tooth, and the gear teeth (14) tooth length direction is a cydariform, the identical unanimity of profile of tooth of the radial section of the gear teeth (14); Tooth root is the wholecircle arc; Described profile angle is a normal profile angle, it is characterized in that said finger cutter comprises cutter hub (8), cutter head (9), and the shape of cutter head (9) cutting edge is identical with teeth groove (13) the shape size at the maximum position of crown-shaved gear cydariform; Cutting edge comprises involute section (10), arc section (12), and the top of cutting edge is a wholecircle arc light slip.
2. finger cutter is used in crown-shaved gear according to claim 1 processing, it is characterized in that being provided with easement curve section (11) between involute section (10) and the arc section (12) of cutting edge.
3. finger cutter is used in crown-shaved gear processing according to claim 1 and 2; The involute section (10) that it is characterized in that said cutting edge is to utilize teeth groove (13) width at the maximum position of crown-shaved gear cydariform to confirm the transverse tooth thickness of cutter head (9), and its functional relation is:
S
g＝P－S
x
S
x＝S×（R
x／R）－2R
x(invα
x－invα)
Wherein: S
gBe the transverse tooth thickness of cutter head, P is the tooth pitch of gear, S
xFor any knuckle-tooth of gear is thick, S is the reference circle transverse tooth thickness of gear, α
xBe any round pressure angle of gear, α is the pressure angle of graduated circle of gear, R
xBe any radius of circle of gear, R is the reference radius of gear.
4. finger cutter is used in crown-shaved gear processing according to claim 1 and 2, and the involute section (10) that it is characterized in that said cutting edge is to utilize gear parameter to calculate to confirm its coordinate figure, and relational expression is:
X
g=R
xsinω
x?
Y
g=R
xcosω
x
Wherein: R
xBe any radius of circle of gear, ω
xBe between cog center half-angle
ω
x=(π－4ξtgα)／2Z+Δ
s／mZ＋(invα
x－invα)
Wherein: ξ is the gear modification coefficient, Δ
sBe the thick attenuate amount α of gear compound graduation knuckle-tooth
xBe any round pressure angle of gear, α is the pressure angle of graduated circle of gear, and Z is the number of teeth of gear, and m is the modulus of gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203536351U CN202239970U (en) | 2011-09-21 | 2011-09-21 | Finger cutter for gear processing of barreled tooth flank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203536351U CN202239970U (en) | 2011-09-21 | 2011-09-21 | Finger cutter for gear processing of barreled tooth flank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202239970U true CN202239970U (en) | 2012-05-30 |
Family
ID=46101271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203536351U Expired - Lifetime CN202239970U (en) | 2011-09-21 | 2011-09-21 | Finger cutter for gear processing of barreled tooth flank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202239970U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877106A (en) * | 2017-11-14 | 2018-04-06 | 北京大圣格尔冶金设备有限公司 | A kind of processing technology of pushing gear tooth |
| CN108044201A (en) * | 2018-01-26 | 2018-05-18 | 中车洛阳机车有限公司 | A kind of cutter of milling straight-tooth |
| CN110449668A (en) * | 2019-09-04 | 2019-11-15 | 江苏科比特切削科技有限公司 | A kind of high-efficient gear milling cutter |
-
2011
- 2011-09-21 CN CN2011203536351U patent/CN202239970U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877106A (en) * | 2017-11-14 | 2018-04-06 | 北京大圣格尔冶金设备有限公司 | A kind of processing technology of pushing gear tooth |
| CN108044201A (en) * | 2018-01-26 | 2018-05-18 | 中车洛阳机车有限公司 | A kind of cutter of milling straight-tooth |
| CN110449668A (en) * | 2019-09-04 | 2019-11-15 | 江苏科比特切削科技有限公司 | A kind of high-efficient gear milling cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |