CN204099497U - A kind of damper mechanism of hob head - Google Patents
A kind of damper mechanism of hob head Download PDFInfo
- Publication number
- CN204099497U CN204099497U CN201420350115.9U CN201420350115U CN204099497U CN 204099497 U CN204099497 U CN 204099497U CN 201420350115 U CN201420350115 U CN 201420350115U CN 204099497 U CN204099497 U CN 204099497U
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- China
- Prior art keywords
- gear
- ring
- thin
- hob head
- gear ring
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- Expired - Fee Related
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Abstract
The damper mechanism that the utility model discloses a kind of hob head comprises pressure ring, belleville spring, setting sleeve, screw, gear, thin gear ring, soft ribbons, wear-resistant sleeve and bull gear.With bull gear, thin gear ring engagement driving while of tooth, the many teeth of the number of teeth of the gear ratio bull gear of thin gear ring, carry out negative addendum modification by thin gear ring.The endoporus of thin gear ring and the external cylindrical surface of wear-resistant sleeve are that glade plane space coordinates, the endoporus of wear-resistant sleeve and bull gear configured left boss interference fit.The damper mechanism of this hob head, hob head main drive gear is made to increase damping link, the damping force produced by this damping ring overcomes the reaction force that hobboing cutter produces when interrupted cutting, thus eliminates the dither of hobboing cutter, avoids the phenomenon that hob head drives gear hobbing machine entirety to resonate together.This damping vibration attenuation structure substantially increases surface roughness and the precision of machining gears workpiece, extends the working life of hobboing cutter, effectively prevent gear hobbing machine and to forge a knife the generation of accident, improve the work efficiency of hobboing cutter.
Description
Technical field
The utility model belongs to Machining Technology field, particularly a kind of hob head auxiliary device.
Background technique
The main transmission of gear hobbing machine hob head generally uses gear transmission structure, and each transmission shaft uses rolling bearing centering.Due to the coefficient of rolling friction of rolling bearing and rolling friction damping force very little, have flank backlass between meshed gears in pairs simultaneously.In the gear hobbing process process of gear hobbing machine, high speed hobboing cutter is under high frequency interrupted cutting state during Hobbing workpiece, the reaction force that rolling friction damping force due to rolling bearing produces when cannot overcome hobboing cutter interrupted cutting, makes hobboing cutter produce dither when High Rotation Speed Hobbing.Its vibration frequency is relevant with the number of teeth to the rotating speed of hobboing cutter, and amplitude is relevant with the size of rolling cut power, and hobboing cutter is vibrated again passes to each axle of main transmission box and even whole hob head by main shaft, and hob head drives gear hobbing machine entirety to resonate together.The vibration of hobboing cutter makes the surface presentation obviously corrugated of processed gear; the operating life of the surface roughness of processed gear and precision and hobboing cutter is reduced all greatly; especially when the modulus of processed gear, diameter and thickness are larger; because the wearing and tearing of hobboing cutter are very serious; a hobboing cutter cannot complete the processing of a whole tooth of gear, and midway must be shut down, after the blade changing hobboing cutter or sharpening; hobboing cutter just can continue to use, and gear hobbing machine could continue machining gears workpiece.Because in Gear Processing process, interval is longer, before continuation machining gears workpiece, gear hobbing machine also needs the hot steady temperature being again preheated to lathe, during to avoid working at the temperature that gear hobbing machine is different, affects the precision of gear workpieces.Said process is not only time-consuming but also require great effort, and the vibration problem of hobboing cutter has had a strong impact on manufacturing efficiency and the machining accuracy of gear hobbing machine.
By increasing main transmission box flywheel inertia and reducing the way of gear hobbing machine processing parameter, although effect to a certain extent can be played to the vibration damping of main transmission box, can not the vibration problem of solution hobboing cutter of essence.First, due to the integrally-built restriction of main transmission, the diameter of flywheel and quality can not make very large, otherwise, the specification of hob head main drive motor and the module of main transmission can be made to increase, make main transmission box entirety become very huge, the cost of lathe is increased greatly, and therefore and significantly the cost performance of lathe but reduces.Secondly, along with the development and progress of cutter preparation process, the specified cutting linear velocity of hobboing cutter is more and more faster, makes the vibration problem of traditional gear hobbing machine main transmission more and more outstanding, uses the way that reduces gear hobbing machine processing parameter to have a strong impact on the work efficiency of gear hobbing machine, manufacture cycle and cost.
Model utility content
Problem to be solved in the utility model is to provide a kind of damper mechanism of hob head, and this damper mechanism small volume, but can solve the vibration problem of hobboing cutter, improves machining accuracy and the efficiency of hobboing cutter.
Disclosed in the utility model, a kind of damper mechanism of hob head is damping mechanism.
As the further improvement of technique scheme, described damping mechanism comprises pressure ring, belleville spring, setting sleeve, screw, gear, thin gear ring, soft ribbons, wear-resistant sleeve and bull gear; With bull gear, thin gear ring engagement driving while of tooth, the many teeth of the number of teeth of the gear ratio bull gear of thin gear ring, carry out negative addendum modification by thin gear ring.
As the further improvement of technique scheme, the endoporus of described thin gear ring and the external cylindrical surface of wear-resistant sleeve are that glade plane space coordinates, the endoporus of wear-resistant sleeve and bull gear configured left boss interference fit.
Improving further again as technique scheme, soft ribbons is bonded with in the both sides of described thin gear ring, pressure ring is pressed on the left side of bull gear by many group belleville springs, and the inner hole sleeve of belleville spring, on the centering external cylindrical surface of setting sleeve, locks the core with load screws setting sleeve.
The damper mechanism of hob head of the present utility model, hob head main drive gear is made to increase damping link, the damping force produced by this damping ring overcomes the reaction force that hobboing cutter produces when interrupted cutting, thus eliminate the dither of hobboing cutter, avoid the phenomenon that hob head drives gear hobbing machine entirety to resonate together.This damping vibration attenuation structure substantially increases surface roughness and the precision of machining gears workpiece, extends the working life of hobboing cutter, effectively prevent gear hobbing machine and to forge a knife the generation of accident, improve the work efficiency of hobboing cutter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the damper mechanism of the utility model hob head.
Embodiment
Below in conjunction with accompanying drawing, the damper mechanism of a kind of hob head that the utility model proposes is described in detail.
As shown in Figure 1, the damper mechanism of hob head of the present utility model is damping vibration attenuation mechanism, and this damping mechanism is made up of pressure ring 1, belleville spring 2, setting sleeve 3, screw 4, gear 5, thin gear ring 6, soft ribbons 7, wear-resistant sleeve 8, bull gear 9.Main transmission box damping mechanism is: with bull gear 9 while of gear 5, thin gear ring 6 engagement driving, the many teeth of the number of teeth of the gear ratio bull gear 9 of thin gear ring 6, interfere when engaging with gear 5 for avoiding thin gear ring 6, thin gear ring 6 is carried out negative addendum modification, the endoporus of thin gear ring 6 and the external cylindrical surface of wear-resistant sleeve 8 are that glade plane space coordinates, the endoporus of wear-resistant sleeve 8 and bull gear 9 configured left boss interference fit, soft ribbons 7 is bonded with in the both sides of thin gear ring 6, pressure ring 1 is pressed on the left side of bull gear 9 by many group belleville springs 2, the inner hole sleeve of belleville spring 2 is on the centering external cylindrical surface of setting sleeve 3, the core of setting sleeve 3 is equipped with locking screw 4.
The adjustment process of damping force: multiple uniform setting sleeve 3 is locked on bull gear 9 left side by lock screw 4, setting sleeve 3 is made to compress belleville spring 2, belleville spring 2 compresses pressure ring 1, and impacting force is acted on the left side of bull gear 9 by pressure ring 1 by thin gear ring 6 and soft ribbons 7.The few tooth of the number of teeth of the thin gear ring 6 of the gear ratio due to bull gear 9, gear 5 and bull gear 9, thin gear ring 6 while during engagement driving, relative rotary motion is certainly led between bull gear 6 and thin gear 6, the size of the positive pressure that belleville spring 2 pairs of pressure rings 1 apply, controlled by the length adjusting setting sleeve 3, this impacting force make both sides be bonded with soft ribbons 7 thin gear ring 6, all produce sliding friction damping force between pressure ring 1 and bull gear 9, overcome by this sliding friction damping force the reaction force that hobboing cutter produces when interrupted cutting.By calculating corresponding specification and the group number of determining belleville spring 2, making this damping mechanism while overcoming hobboing cutter dither, ensureing that again the power loss of main motor is minimum.
Claims (3)
1. a damper mechanism for hob head, is characterized in that: the damper mechanism of hob head is damping mechanism; Described damping mechanism comprises pressure ring (1), belleville spring (2), setting sleeve (3), screw (4), gear (5), thin gear ring (6), soft ribbons (7), wear-resistant sleeve (8) and bull gear (9); With bull gear (9), thin gear ring (6) engagement driving the while of tooth (5), the many teeth of the number of teeth of the gear ratio bull gear (9) of thin gear ring (6), carry out negative addendum modification by thin gear ring 6.
2. the damper mechanism of hob head according to claim 1, is characterized in that: endoporus and the external cylindrical surface of wear-resistant sleeve (8) of described thin gear ring (6) are that glade plane space coordinates, the endoporus of wear-resistant sleeve (8) and bull gear (9) configured left boss interference fit.
3. the damper mechanism of hob head according to claim 2, it is characterized in that: be bonded with soft ribbons (7) in the both sides of described thin gear ring (6), pressure ring (1) is pressed on the left side of bull gear (9) by organizing belleville spring (2) more, the inner hole sleeve of belleville spring (2) is on the centering external cylindrical surface of setting sleeve (3), and locking screw (4) loads the core of setting sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350115.9U CN204099497U (en) | 2014-06-29 | 2014-06-29 | A kind of damper mechanism of hob head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350115.9U CN204099497U (en) | 2014-06-29 | 2014-06-29 | A kind of damper mechanism of hob head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204099497U true CN204099497U (en) | 2015-01-14 |
Family
ID=52267927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420350115.9U Expired - Fee Related CN204099497U (en) | 2014-06-29 | 2014-06-29 | A kind of damper mechanism of hob head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204099497U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052473A (en) * | 2017-04-25 | 2017-08-18 | 谭清平 | A kind of special precision high type gear-hobbing machine hobcutter of travelling gear |
-
2014
- 2014-06-29 CN CN201420350115.9U patent/CN204099497U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052473A (en) * | 2017-04-25 | 2017-08-18 | 谭清平 | A kind of special precision high type gear-hobbing machine hobcutter of travelling gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |