CN202326982U - Arc curve gear - Google Patents
Arc curve gear Download PDFInfo
- Publication number
- CN202326982U CN202326982U CN2011204401313U CN201120440131U CN202326982U CN 202326982 U CN202326982 U CN 202326982U CN 2011204401313 U CN2011204401313 U CN 2011204401313U CN 201120440131 U CN201120440131 U CN 201120440131U CN 202326982 U CN202326982 U CN 202326982U
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- China
- Prior art keywords
- tooth
- gear
- teeth
- arc
- gear teeth
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Abstract
The utility model relates to a transmission and driving part, and discloses an arc curve gear, which comprises a gear body (1) and gear teeth (3). An axial hole (2) is formed in the center of the gear body (1). A tooth curve (34) of each gear tooth (3) is an arc. The tooth surface shapes and meshing properties of the gear teeth are changed by changing the shapes of the tooth curves of the gear teeth of the gear, so that the comprehensive strength of the gear is strengthened; and the arc curve gear has the advantages of strong strength, long service life and the like.
Description
Technical field
The utility model relates to transmission and driver part, has related in particular to a kind of arc curved tooth cylindrical gear.
Background technique
At present in the industrial field transmission system, use be conventional gears, because of its have nothing in common with each other defective and deficiency have also limited industrial overall development.Can not bear heavy load like spur gear, helical gear, when axial force was arranged, bearing was fragile; Though herringbone gear is more steady, its gear teeth are gear teeth easy-rupturing under high loading; And common circular tooth gear transmission centre distance error is responsive, is prone to gummed between the gear teeth.
Summary of the invention
The utility model to ordinary gear in the existing technology bear that load is little, gear teeth easy-rupturing, the responsive high shortcoming of error; Provide a kind of and changed gear teeth tooth surface shape and engagement character to reach through the gear teeth teeth directional wire shaped that changes gear; Thereby improve the gear comprehensive strength; Has the intensity height, the arc curved tooth cylindrical gear of advantages such as long service life.
In order to solve the problems of the technologies described above, the utility model is able to solve through following technical proposals:
The arc curved tooth cylindrical gear comprises the denticle and the gear teeth, and the centre of denticle is provided with axis hole, and the teeth directional line of the described gear teeth is a camber line.The teeth directional line is the intersection of the flank of tooth and reference surface, and the teeth directional line of spur gear is a straight line usually, and helical gear teeth directional line is a helix.
As preferably, the described gear teeth comprise the preceding flank of tooth, tooth top and the back flank of tooth, and the preceding flank of tooth is the arc-shaped surface of indent, and the back flank of tooth is the arc-shaped surface of evagination, and the teeth directional line of the gear teeth is a circular arc line.
As preferably, the teeth directional line of the described gear teeth is a pair of circular curve, and the radian size of circular curve is 0 ° to 180 °.
As preferably, described gear teeth transverse tooth profile is an involute profile.Flank profil is that the flank of tooth is by a transversal that set curved surface cut that intersects with tooth trace.
As preferably, described gear teeth transverse tooth profile is a cycloidal profile.
As preferably, described gear teeth transverse tooth profile is a circular arc profile.
The utility model is owing to adopted above technological scheme; Have significant technique effect: the utility model changes gear teeth tooth surface shape and engagement character through the gear teeth teeth directional wire shaped that changes gear to reach; Thereby improve the gear comprehensive strength, have the intensity height, advantages such as long service life.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation.
The toponym that each number designation referred in the above accompanying drawing is following: the wherein flank of tooth, 34-teeth directional line behind the flank of tooth, 32-tooth top, the 33-before the 1-denticle, 2-axis hole, the 3-gear teeth, 31-.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with accompanying drawing 1:
The arc curved tooth cylindrical gear, as shown in Figure 1, comprise the denticle 1 and the gear teeth 3, the centre of denticle 1 is provided with axis hole 2, and the teeth directional line 34 of the described gear teeth 3 is a camber line.The teeth directional line is the intersection of the flank of tooth and reference surface.Usually the teeth directional line of spur gear is a straight line, and helical gear teeth directional line is a helix.Design teeth directional line can be revised, as to the high-speed overload gear, is the amount of deformation of the compensation gear teeth under stand under load, and the bearing capacity of the raising gear teeth just often is modified to crowned teeth or with the two ends tip relief of the gear teeth during design.
The gear teeth 3 comprise the preceding flank of tooth 31, the tooth top 32 and the back flank of tooth 33, and the preceding flank of tooth 31 is the arc-shaped surface of indent, and the back flank of tooth 33 is the arc-shaped surface of evagination, and the teeth directional line 34 of the gear teeth 3 is a circular arc line.The teeth directional line of arc curved tooth cylindrical gear is a circular arc line, and is longer than the teeth directional line of conventional gears.Under the identical situation of the thickness of gear, obtain through experiment, the arc curved tooth cylindrical gear among the application grows 2.33%-6.98% than traditional straight-tooth, helical teeth, herringbone tooth.Therefore the area of contact of two gear teeth also will increase, and anti-load force also can strengthen, and the contact points fatigue resistance also can increase.Therefore, the teeth directional line 34 of the gear teeth 3 of gear is designed to circular arc line, improves the anti-load force of gear, has prolonged the working life of gear.
The teeth directional line 34 of the gear teeth 3 is a pair of circular curve, and the radian size of circular curve is 60 °.Obtain through experiment, the radian size of circular curve during less than 90 ° the wearing and tearing of gear less, wherein the radian size of circular curve is preferably 15 °, 30 °, 45 °, 60 °.The teeth directional line of arc curved tooth cylindrical gear becomes circular arc line, make the tooth top tip surface with face mutually two lateral tooth flanks become respectively the concavo-convex flank of tooth along teeth directional also for camber line, realize easily that therefore there is the control adjustment contact area, can improve actual gear teeth intensity.The arc curved tooth cylindrical gear is changed along with engagement process by the contact points Normal direction and the induced curvature radius value of arc curved tooth cylindrical gear among the application; So be prone to form lubricant oil become to catching up with; Make a concerted effort and improve its anticol; The promptly preceding flank of tooth 31 of the concave surface of the flank of tooth makes the oil film difficult drop-off, and remaining time is longer, so gear is difficult for impaired.The gear teeth 3 transverse tooth profiles are involute profile.Flank profil is that the flank of tooth is by a transversal that set curved surface cut that intersects with tooth trace.
The arc curved tooth cylindrical gear is secondary, when engagement, compares except that flank of tooth area increases with conventional gears, and gear pair has 3 pairs of gear teeth to participate in engagement when when transmission, participating in engagement, and relatively conventional gears has more a pair of.Line of contact, face stroke are longer in addition, and total contact ratio is increased.The gear impact force is disperseed, and order stressed evenly hold axle, do not had axial force.
When gear pair operation or gear mechanism operation, when driving gear and driven gear engagement driving process,, concavo-convex two tooth engagement processes are slided overlap closely because of gear teeth teeth directional line is the characteristic of circular arc line, have and become to catching up with its resistance of driven gear property to weaken.Input power is more saved, thus velocity ratio, and velocity ratio increases relatively, more saves input power.
In a word, the above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (6)
1. the arc curved tooth cylindrical gear comprises the denticle (1) and the gear teeth (3), and the centre of denticle (1) is provided with axis hole (2), it is characterized in that: the teeth directional line (34) of the described gear teeth (3) is a camber line.
2. arc curved tooth cylindrical gear according to claim 1; It is characterized in that: the described gear teeth (3) comprise the preceding flank of tooth (31), the tooth top (32) and the back flank of tooth (33); The preceding flank of tooth (31) is the arc-shaped surface of indent; The back flank of tooth (33) is the arc-shaped surface of evagination, and the teeth directional line (34) of the gear teeth (3) is a circular arc line.
3. arc curved tooth cylindrical gear according to claim 1 is characterized in that: the teeth directional line (34) of the described gear teeth (3) is a pair of circular curve, and the radian size of circular curve is 0 ° to 180 °.
4. arc curved tooth cylindrical gear according to claim 1 is characterized in that: the described gear teeth (3) transverse tooth profile is an involute profile.
5. arc curved tooth cylindrical gear according to claim 1 is characterized in that: the described gear teeth (3) transverse tooth profile is a cycloidal profile.
6. arc curved tooth cylindrical gear according to claim 1 is characterized in that: the described gear teeth (3) transverse tooth profile is a circular arc profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204401313U CN202326982U (en) | 2011-11-09 | 2011-11-09 | Arc curve gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204401313U CN202326982U (en) | 2011-11-09 | 2011-11-09 | Arc curve gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202326982U true CN202326982U (en) | 2012-07-11 |
Family
ID=46438961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204401313U Expired - Lifetime CN202326982U (en) | 2011-11-09 | 2011-11-09 | Arc curve gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202326982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482165A (en) * | 2014-11-17 | 2015-04-01 | 扬州大学 | Bidirectional arc cylindrical gear |
| CN108953502A (en) * | 2018-10-08 | 2018-12-07 | 天津工业大学 | A kind of herringbone arc-shaped gear planetary transmission system based on circular arc profile |
-
2011
- 2011-11-09 CN CN2011204401313U patent/CN202326982U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482165A (en) * | 2014-11-17 | 2015-04-01 | 扬州大学 | Bidirectional arc cylindrical gear |
| CN108953502A (en) * | 2018-10-08 | 2018-12-07 | 天津工业大学 | A kind of herringbone arc-shaped gear planetary transmission system based on circular arc profile |
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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: 20120711 |