Synchronous pulley with continuous tooth grooves

Abstract

The utility model discloses a synchronous pulley with continuous tooth grooves, which comprises a synchronous pulley body, synchronous pulley teeth and synchronous pulley tooth grooves, and the synchronous pulley body is provided with a central through hole; a plurality of synchronous belt wheel teeth and synchronous belt wheel tooth grooves are evenly distributed on the surface of the wheel teeth of the synchronous belt wheel body in the axial direction, and the synchronous belt wheel teeth and the synchronous belt wheel tooth grooves are distributed in a pairwise staggered mode. The synchronous belt wheel tooth groove continuously extends in the axial direction, and round corners are arranged at the vertex angles of the two sides of the synchronous belt wheel tooth groove and used for correcting the guiding direction through the guiding performance of the synchronous belt wheel so as to overcome meshing guiding in the transmission process of the synchronous belt wheel and the synchronous belt. The tooth-shaped sharp corner is prevented from being damaged by contact stress in the driving process, and the size of the tooth-shaped sharp corner is not damaged when the tooth-shaped sharp corner is matched with a tooth-shaped line synchronous belt with the same tooth groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to synchronous pulley field, especially in a kind of synchronous pulley with continuous tooth slot. BACKGROUND

[0002] Synchronous pulley is low-speed high-torque transmission parts, it has the various advantages of belt drive, chain drive and gear drive, and power is transmitted by the mutual engagement of synchronous belt teeth and synchronous pulley groove when working.Synchronous pulley is widely used in automobile, textile, printing and packaging equipment, sewing equipment, office equipment, laser engraving equipment, tobacco, financial machine, stage lighting, communication food machinery, medical machinery, steel machinery, petroleum chemical industry, instruments and meters, various precision machine tools and other fields.

[0003] The existing conventional general synchronous pulley tooth slot extends along the axis direction of synchronous pulley, and the route is linear or herringbone tooth type.When linear synchronous pulley transmits or drives power, the tooth surface will be partially worn after long-term use, which will cause a pulley tooth type to be damaged, and the late engagement with synchronous belt will produce tooth shedding and tooth scratching, affecting normal use.Similarly, the middle groove needs to be provided in the middle of the width direction of herringbone tooth type synchronous pulley, which provides a termination position during gear shaping process, and facilitates chip removal during machining process.

[0004] The above-mentioned conventional general linear synchronous pulley is simple to process and has good transmission capacity, but long-term high-efficiency operation will cause the synchronous pulley to deviate from the synchronous belt, and a check ring or other structure is needed to guide the synchronous pulley, thereby reducing the deviation degree of the gear and the synchronous belt;The above-mentioned conventional general herringbone tooth type synchronous pulley has good guiding property, but the tooth type needs to be machined on the left and right respectively, and a middle groove is provided in the middle direction of the width of the synchronous belt, which increases the machining process.

[0005] The scheme of the utility model is an improvement on the existing synchronous pulley aiming at the above-mentioned problems. CONTENT OF UTILITY MODEL

[0006] In order to overcome the deficiencies in the prior art, the utility model provides a synchronous pulley with continuous tooth slot, which designs a new tooth type route mode on the tooth type surface of the synchronous pulley, solves the engagement guiding problem of the synchronous pulley and the synchronous belt during transmission process, improves the engagement rate of the synchronous pulley and the synchronous belt, and increases the service life of the synchronous pulley.

[0007] In order to achieve the above-mentioned utility model purposes and solve the technical problems, the technical scheme adopted is as follows:

[0008] A synchronous pulley with continuous tooth slot, comprising a synchronous pulley body, a synchronous pulley tooth and a synchronous pulley tooth slot, wherein:

[0009] The synchronous pulley body is provided with a center through hole;

[0010] The tooth surfaces of the synchronous pulley body are axially uniformly distributed with a plurality of synchronous pulley teeth and synchronous pulley tooth grooves, and the synchronous pulley teeth and the synchronous pulley tooth grooves are alternately distributed in pairs;

[0011] The synchronous pulley tooth groove is continuously extended in the axial direction, and has a rounded corner at the top corner on both sides, so as to:

[0012] The guiding direction is corrected by the guiding property of the synchronous pulley, so as to overcome the meshing guiding in the synchronous pulley and synchronous belt transmission process;

[0013] The tooth type sharp corner contact stress is prevented from being damaged in the driving process, and the size is not damaged when the synchronous belt cooperates with the same tooth groove tooth type line of the synchronous belt.

[0014] Further, the synchronous pulley tooth groove is left-right symmetrical in the width direction of the synchronous pulley, and each end of the left-right symmetrical structure has a straight line a with a width greater than or equal to 0.1mm.

[0015] Further, the arc radius Rb of the synchronous pulley tooth groove is greater than or equal to 0.1mm.

[0016] Preferably, the arc radius Rb is 6mm.

[0017] Further, when the arc radius Rb of the plurality of synchronous pulley tooth grooves is greater than or equal to 0.1mm, the arc lines are continuously tangent, and the tangent angle θ of two adjacent synchronous pulley tooth grooves is between 0.1° and 180°.

[0018] Preferably, the adjacent tangent angle θ is 140°.

[0019] Further, the range H of the upper and lower valleys of the continuous arc lines of the plurality of adjacent synchronous pulley tooth grooves is greater than or equal to 0.1mm.

[0020] Preferably, the range H of the upper and lower valleys of the continuous arc lines is 1.5mm.

[0021] Further, the radius of the rounded corner Rt at the top corner of the synchronous pulley tooth groove is between 0.1mm and 2mm.

[0022] Preferably, the rounded corner Rt at the top corner is 0.55mm.

[0023] The above technical scheme is adopted, so that compared with the prior art, the following advantages and positive effects are obtained:

[0024] 1. The utility model relates to a synchronous pulley with continuous tooth groove, through design a continuous tooth type route on the synchronous pulley, corresponding in the same tooth type synchronous belt mutual meshing drive, can realize self -directivity effect, greatly reduce the phenomenon of tooth loss, tooth marking produced in long -term use, also need not additional structure to guide, reduce the deviation degree,

[0025] 2. The utility model discloses on the machining procedure, only need a milling cutter along the continuous tooth type route milling path, need not secondary processing, reduce the processing time, improve the processing efficiency,

[0026] 3. The utility model discloses in the synchronous pulley tooth type adopts the wave formula, continuous type, has the wave crest wave trough, periodic appearance, therefore tooth type even if has partial wear, this one synchronous pulley tooth type other part still does not affect the use, not only has improved the meshing rate, also improved the service life.

[0027] 4. The utility model discloses a synchronous pulley, have good guiding function, in the synchronous pulley and synchronous belt meshing, can automatically adjust the offset direction, can realize good linear positioning, thereby in the transmission output aspect will be more stable, make it have greater transmission capacity. SHEET DESCRIPTION

[0028] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will be to the embodiment description needed to use the drawing a simple introduction. Obviously, the following description in the drawing is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings. In the drawings,

[0029] Figure 1 It is a three-dimensional schematic view of the utility model discloses a synchronous pulley with continuous tooth groove;

[0030] Figure 2 It is the local enlarged view of the fillet at the top corner of the synchronous pulley in the utility model discloses a synchronous pulley with continuous tooth groove;

[0031] Figure 3 It is the overall front view of the utility model discloses a synchronous pulley with continuous tooth groove;

[0032] Figure 4 It is the overall side view of the utility model discloses a synchronous pulley with continuous tooth groove;

[0033] Figure 5 It is the overall side view of the utility model discloses a synchronous pulley with continuous tooth groove;

[0034] Figure 6Is the utility model a kind of synchronous pulley tooth type path (axial dimension) schematic diagram in synchronous pulley with continuous tooth slot;

[0035] Figure 7 Is the utility model a kind of partial solid meshing schematic diagram of synchronous belt combination device with continuous tooth slot in synchronous pulley with continuous tooth slot;

[0036] Figure 8 Is the utility model a kind of front view of synchronous belt combination device with continuous tooth slot in synchronous pulley with continuous tooth slot.

[0037]

Main symbol explanation

[0038] 1-synchronous pulley body;

[0039] 2-synchronous pulley gear;

[0040] 3-synchronous pulley tooth slot;

[0041] 4-synchronous belt body;

[0042] 5-synchronous belt gear;

[0043] 6-synchronous belt tooth slot;

[0044] Rt-top corner round;

[0045] a-path straight line segment distance;

[0046] Rb-arc radius;

[0047] θ-adjacent tangent angle;

[0048] H-continuous arc upper and lower valley range. DETAILED DESCRIPTION

[0049] The technical scheme of the utility model will be described clearly and completely in connection with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled in the art without making creative labor belong to the scope of the utility model protection.

[0050] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the utility model, it needs to explain, unless otherwise expressly provided and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] As shown in Figures 1-8 The utility model discloses a synchronous pulley with continuous tooth groove, including synchronous pulley body, synchronous pulley tooth and synchronous pulley tooth groove, wherein:

[0053] The synchronous pulley body is provided with a center through hole;

[0054] The tooth surface of the synchronous pulley body is axially uniformly distributed with a plurality of synchronous pulley teeth and synchronous pulley tooth grooves, and the plurality of synchronous pulley teeth and synchronous pulley tooth grooves are alternately distributed;

[0055] The synchronous pulley tooth groove is continuously extended along the axial direction, and the top corners on both sides have round corners, for:

[0056] The guiding direction is corrected through the guiding property of the synchronous pulley to overcome the meshing guiding in the synchronous pulley and synchronous belt transmission process;

[0057] Prevent the tooth type sharp corner contact stress from being destroyed in the driving process, and do not damage the size when cooperating with the same tooth groove tooth type line synchronous belt.

[0058] Reference Figure 6 , the synchronous pulley tooth groove is left-right symmetrical structure in the width direction of the synchronous pulley, and the left-right symmetrical structure has a straight line a at both ends respectively, and the width of the straight line a is greater than or equal to 0.1mm. Preferably, the width of the straight line a is 0.5mm. The tooth groove tooth type can be determined from the both sides end surface of the synchronous pulley;At the same time, the width of the synchronous belt can be adjusted according to the actual situation.

[0059] Further, the arc radius Rb of the tooth groove of the synchronous pulley is greater than or equal to 0.1 mm. Preferably, the arc radius Rb is 6 mm.

[0060] Further, when the arc radius Rb of the tooth groove of the synchronous pulley is greater than or equal to 0.1 mm, the tangent angle θ of two adjacent tooth grooves is between 0.1° and 180°. Preferably, the adjacent tangent angle θ is 140°.

[0061] Further, the range H of the upper and lower valleys of the continuous arc of the adjacent tooth grooves of the synchronous pulley is greater than or equal to 0.1 mm. Preferably, the range H of the upper and lower valleys of the continuous arc is 1.5 mm.

[0062] Reference Figure 1 and Figure 2 The radius of the round corner Rt at the top corner of the tooth groove of the synchronous pulley is between 0.1 and 2 mm. Preferably, the round corner Rt at the top corner is 0.55 mm.

[0063] In the embodiment, the synchronous pulley is processed according to the path size shown in Figure 6 in the axial direction of the synchronous pulley based on all the tooth types of the corresponding synchronous belt. And the actual required number of teeth is used to evenly distribute the circumferential array of the axial center axis of the synchronous pulley.

[0064] Reference Figure 3 and 8 The synchronous pulley teeth and the synchronous pulley tooth grooves are alternately arranged on the surface of the synchronous pulley, the synchronous belt teeth and the synchronous belt tooth grooves are alternately arranged on the surface of the synchronous belt body, the synchronous pulley teeth are matched with the synchronous belt tooth grooves, and the synchronous pulley tooth grooves are matched with the synchronous belt teeth.

[0065] When the synchronous pulley is driven by the same synchronous belt tooth type, the power is continuously transmitted through the contact surfaces of the synchronous pulley and the synchronous belt in turn. The synchronous pulley and the synchronous belt are provided with continuous tooth grooves, which effectively improve the engagement rate of the synchronous pulley and the synchronous belt. The synchronous pulley has strict size control on the continuous tooth grooves, keeps the complete contact of the transmission power contact surface, and improves the working efficiency.

[0066] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A synchronous pulley with continuous toothed grooves, characterized in that, Includes the synchronous pulley body, synchronous pulley teeth, and synchronous pulley tooth grooves, wherein: The synchronous pulley body is provided with a central through hole; The synchronous pulley body has a plurality of synchronous pulley teeth and synchronous pulley grooves evenly distributed axially on the tooth surface, and the plurality of synchronous pulley teeth and synchronous pulley grooves are distributed alternately in pairs. The synchronous pulley tooth grooves are continuous and extend axially, including continuous arcs, with rounded corners at both apex points, for: The guiding direction is corrected by the guiding property of the synchronous pulley itself, thereby overcoming the meshing guidance in the process of synchronous pulley and synchronous belt transmission; To prevent damage to the toothed tip contact during driving and to avoid dimensional damage when mating with a synchronous belt of the same toothed profile.

2. A synchronous pulley with continuous toothed grooves according to claim 1, characterized in that, The tooth grooves of the synchronous pulley are symmetrical in the width direction of the synchronous pulley, and there is a straight line a at each end of the symmetrical structure, and the width of the straight line a is greater than or equal to 0.1mm.

3. A synchronous pulley with continuous toothed grooves according to claim 1, characterized in that, The radius of the arc of the synchronous pulley tooth groove, Rb, is greater than or equal to 0.1 mm.

4. A synchronous pulley with continuous toothed grooves according to claim 3, characterized in that, The radius of the arc, Rb, is 6 mm.

5. A synchronous pulley with continuous toothed grooves according to claim 1, characterized in that, When the radius of the arc Rb is greater than or equal to 0.1 mm, the arcs of several synchronous pulley tooth grooves are continuously tangent, and the tangency angle θ between two adjacent synchronous pulley tooth grooves is between 0.1° and 180°.

6. A synchronous pulley with continuous toothed grooves according to claim 5, characterized in that, The adjacent tangent angle θ is 140°.

7. A synchronous pulley with continuous toothed grooves according to claim 1, characterized in that, The range H of the upper and lower troughs of the continuous arc of several adjacent synchronous pulley tooth grooves is greater than or equal to 0.1 mm.

8. A synchronous pulley with continuous toothed grooves according to claim 7, characterized in that, The range H of the upper and lower troughs of the continuous arc is 1.5 mm.

9. A synchronous pulley with continuous toothed grooves according to claim 1, characterized in that, The radius of the fillet Rt at the apex of the synchronous pulley tooth groove is between 0.1 and 2 mm.

10. A synchronous pulley with continuous toothed grooves according to claim 9, characterized in that, The fillet radius Rt at the apex is 0.55mm.

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