A flexible pulley structure and processing technology for a harmonic reducer

Abstract

The present invention relates to a flexible wheel structure and processing technology for a harmonic reducer. The new flexible wheel structure includes a stamping part and a plastic sealing part. The stamping part includes a center tube and a connecting disk. The connecting disk is coaxially fixed to one end of the center tube. The connecting disk is provided with a plurality of through-grooves evenly spaced along its own circumference. The plastic sealing part is fixedly mounted on the thick end of the connecting disk. The beneficial effect of the present invention is that the structural design of the stamping part is reasonable. The stamping part is processed with grooves distributed in a circular row. The grooves disperse the lateral and longitudinal pressures generated when the flexible wheel deforms during operation, which can effectively reduce the damage to the flexible wheel caused by deformation. At the same time, the wall thickness of the flexible wheel can be thickened to a certain extent, and the overall strength of the part will be greatly enhanced, thereby greatly improving the torsional resistance and impact resistance of the harmonic reducer. In addition, the processing technology of the flexible wheel is simple, efficient and low-cost.

Description

Technical Field

[0001] The present invention relates to the technical field of a harmonic reducer flexspline, and in particular to a harmonic reducer flexspline structure and a processing technology thereof. Background Art

[0002] A harmonic reducer consists of only three core components: a wave generator, a flexspline, and a rigid wheel. The wave generator's elliptical shape causes the flexspline's teeth to mesh with the rigid wheel at two opposing locations along the ellipse's major axis. For every 180-degree clockwise rotation of the wave generator, the flexspline's teeth advance one tooth counterclockwise relative to the rigid wheel. Each clockwise rotation of the wave generator causes the flexspline to move two teeth counterclockwise from its original position relative to the rigid wheel. Currently, the flexspline in conventional harmonic reducers is too thin and lacks strength to meet production requirements. Summary of the Invention

[0003] The present invention provides a harmonic reducer flexible wheel structure and a processing technology, aiming to solve the problems in the prior art.

[0004] The technical solution of the present invention to solve the above technical problems is as follows:

[0005] A flexible wheel structure of a harmonic reducer includes a stamping part and a plastic sealing part. The stamping part includes a center tube and a connecting disk. The connecting disk is coaxially fixed to one end of the center tube. The connecting disk is provided with multiple through-grooves evenly spaced along its circumference. The plastic sealing part is fixedly mounted on the thick end of the connecting disk.

[0006] The present invention has the following beneficial effects: the stamped part provided by the present invention has a rational structural design and is provided with a circumferential array of grooves. These grooves disperse the lateral and longitudinal pressures generated by the deformation of the flexspline during operation, effectively reducing damage to the flexspline caused by deformation. Based on the above technical solution, the present invention can also make the following improvements.

[0007] Furthermore, the plastic sealing member is in a circular ring structure, and the outer diameter of the plastic sealing member is equal to the diameter of the connecting disk.

[0008] The beneficial effect of adopting the above further solution is that the shapes of the stamping part and the plastic sealing part are reasonably designed, the two are adapted to each other, and the assembly is convenient.

[0009] Furthermore, the wall thickness of the stamping part is 0.2-0.4 mm.

[0010] The beneficial effect of adopting the above further scheme is that the structure is simple, the wall thickness of the above stamping part is reasonably designed, and the groove design can increase the thickness of the entire stamping part to a certain extent, which can not only ensure the normal operation of the flexible wheel, but also increase the strength of the entire stamping part and extend its service life.

[0011] Furthermore, a gear ring for cooperating with the rigid wheel of the harmonic reducer is provided on the thin end of the stamping part.

[0012] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the gear ring on the thin end of the stamping part can cooperate with the gear ring on the rigid wheel, which is easy to assemble.

[0013] Furthermore, a plurality of bolt holes are provided on the connection plate and the plastic sealing component at intervals along their circumferences, and some of the bolt holes on the connection plate are connected to corresponding bolt holes on the plastic sealing component.

[0014] The beneficial effects of adopting the above further solution are simple structure, reasonable design of multiple bolt holes, convenience for connecting the stamping parts with other components, and easy assembly.

[0015] Furthermore, the plurality of bolt holes on the connecting plate are divided into a plurality of bolt hole groups, and the plurality of bolt hole groups and the plurality of cutting grooves are alternately distributed in sequence along the circumference of the connecting plate.

[0016] The beneficial effects of adopting the above further solution are simple structure, reasonable distribution of multiple bolt holes and multiple slots on the stamping part, which can not only realize normal operation of the flexible wheel but also facilitate assembly.

[0017] Furthermore, the cross section of each of the grooves is T-shaped.

[0018] The beneficial effects of adopting the above further solution are simple structure and reasonable groove shape design. The groove disperses the lateral and longitudinal pressure generated by the deformation of the flexible wheel during operation, which can effectively reduce the damage to the flexible wheel caused by deformation. The present invention also relates to a processing method for the flexible wheel structure of the harmonic reducer as described above, comprising the following specific steps:

[0019] S1: stamping, stamping the pipe to the set thickness;

[0020] S2: cutting holes, machining a plurality of through-cut grooves evenly spaced on the edge of one end of the pipe;

[0021] S3: bending, pressing one end of the pipe fitting corresponding to the plurality of grooves into a ring structure to form a connecting plate;

[0022] S4: punching, processing a plurality of bolt holes at intervals on the connecting plate and the plastic sealing member in S3, and connecting some of the bolt holes on the connecting plate with corresponding bolt holes on the plastic sealing member;

[0023] S5: Sealing with plastic, fixing the plastic sealing piece on one end of the pipe.

[0024] The beneficial effect of adopting the above further solution is that the present invention also provides a processing technology for the flexible wheel structure of the harmonic reducer, which is simple, efficient and low-cost.

[0025] Furthermore, the set thickness is 2-5 mm.

[0026] The beneficial effects of adopting the above further solution are that the structure is simple, the thickness of the above pipe is reasonably designed, and the strength of the pipe is guaranteed.

[0027] Furthermore, before S1, the step S0 is also included: processing the steel pipe to a set thickness by hot rolling, cold rolling and cold drawing in sequence, and cutting the steel pipe to obtain the pipe fitting of a set length.

[0028] The beneficial effect of adopting the above further solution is that the steel pipe can be processed to a set thickness and length, and the processing is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the overall structure of the flexible pulley in the present invention;

[0030] Figure 2 It is a partial structural diagram of the flexible pulley in the present invention;

[0031] Figure 3 It is a schematic diagram of the end portion of the present invention;

[0032] Figure 4 is a side view of the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of the stamping part during stamping in the present invention;

[0034] Figure 6 This is one of the structural diagrams of the punching part during hole cutting in the present invention;

[0035] Figure 7 This is the second structural diagram of the punching part during hole cutting in the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the punching part of the present invention;

[0037] Figure 9 Schematic diagram of the structure of the plastic sealing component in the present invention;

[0038] Figure 10 It is a process flow chart of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 1. Stamping parts; 2. Plastic-sealed parts; 3. Grooving; 4. Ring gear; 5. Bolt holes. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0044] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0045] Example 1

[0046] like Figures 1 to 9 As shown, this embodiment provides a flexible wheel structure of a harmonic reducer, including a stamping part 1 and a plastic sealing part 2, which includes a center tube and a connecting disk, the connecting disk is coaxially fixed to one end of the center tube, and the connecting disk is provided with a plurality of through grooves 3 evenly spaced along its own circumference; the plastic sealing part 2 is fixedly mounted on the connecting disk.

[0047] The structural design of the stamping part provided in this embodiment is reasonable. The stamping part 1 is processed with grooves 3 distributed in a circumferential array. The grooves 3 disperse the lateral and longitudinal pressures generated by the deformation of the flexible pulley when it is working, which can effectively reduce the damage to the flexible pulley caused by deformation. At the same time, the wall thickness of the flexible pulley can be thickened to a certain extent, and the overall strength of the part will be greatly enhanced, thereby greatly improving the torsional resistance and impact resistance of the harmonic reducer.

[0048] Example 2

[0049] On the basis of Example 1, in this embodiment, the plastic sealing member 2 is an annular structure, and the outer diameter of the plastic sealing member 2 is equal to the diameter of the connecting disk.

[0050] The shapes of the stamping part 1 and the plastic sealing part 2 are reasonably designed, and the two are adapted to each other and easy to assemble.

[0051] Example 3

[0052] On the basis of Example 2, in this embodiment, the wall thickness of the stamping part 1 is 0.2-0.4 mm.

[0053] This solution has a simple structure, the wall thickness of the stamping part 1 is reasonably designed, and the design of the groove 3 can increase the thickness of the entire stamping part 1 to a certain extent, which can not only ensure the normal operation of the flexible wheel, but also increase the strength of the entire stamping part 1 and extend its service life.

[0054] Preferably, in this embodiment, the wall thickness of the stamping part 1 is preferably 0.3 mm.

[0055] Example 4

[0056] On the basis of any one of Examples 2 to 3, in this embodiment, a gear ring 4 for cooperating with the rigid wheel of the harmonic reducer is provided on the thin end of the stamping part 1 .

[0057] This solution has a simple structure and a reasonable design. The gear ring 4 on the thin end of the stamping part 1 can cooperate with the gear ring on the rigid wheel, which is convenient for assembly.

[0058] Example 5

[0059] Based on any one of Examples 2 to 4, in this embodiment, a plurality of bolt holes 5 are provided on the connecting plate and the plastic sealing component 2 along their own circumference, and some of the bolt holes 5 on the connecting plate are connected to the corresponding bolt holes 5 on the plastic sealing component 2.

[0060] This solution has a simple structure, and the multiple bolt holes 5 are reasonably designed, which facilitates the connection between the stamping part 1 and other components and is easy to assemble.

[0061] Example 6

[0062] On the basis of Example 5, in this embodiment, the multiple bolt holes 5 on the connecting plate are divided into multiple bolt hole groups, and the multiple bolt hole groups and the multiple slots 3 are alternately distributed along the circumference of the connecting plate.

[0063] This solution has a simple structure, and the multiple bolt holes 5 and the multiple slots 3 on the stamping part 1 are reasonably distributed, which can not only realize the normal operation of the flexible spline, but also facilitate assembly.

[0064] Example 7

[0065] On the basis of the above embodiments, in this embodiment, the cross section of each of the slots 3 is T-shaped.

[0066] This solution has a simple structure and the shape of the slots 3 is reasonably designed. The slots 3 disperse the lateral and longitudinal pressure generated by the deformation of the flexspline during operation, effectively reducing damage to the flexspline caused by deformation. Preferably, in this embodiment, the multiple slots 3 are evenly spaced along the circumference of the connecting disk.

[0067] Preferably, in this embodiment, each T-shaped groove 3 includes groove body 1 and groove body 2 distributed perpendicular to each other, and groove body 1 and groove body 2 respectively pass through both sides of the connecting disk; groove body 1 extends radially along the connecting disk, and groove body 2 is distributed circumferentially along the connecting disk.

[0068] In addition, each of the above-mentioned groove bodies 2 has an arc-shaped structure with a thin middle portion and thick ends, and extends along the circumference of the connecting plate.

[0069] Moreover, each of the first trough bodies is in the form of an elongated trough body structure with one end being thick and the other end being thin, and the thin end thereof is connected to the middle portion of the second trough body.

[0070] Based on the above scheme, the projection surface (i.e., cross-section) of each slot 3 is T-shaped. The T-slots are arranged around the forming circle, with the vertical position of the slot pointing toward the center of the circle. The slot width is processed according to the minimum slot width of the stamping process, and the smaller the slot width, the better. The size limit depends on the processing capabilities. For example, if the wall thickness of the stamped part 1 is 2mm and the slot opening is 1mm, the uniform cross-section of the T-slot is 1mm wide. The radial grooves are mainly to avoid irregular cracks on the edge of the formed flange. Pre-cutting can clearly define the opening position.

[0071] As the pipe is further formed, the radial grooves extending to the edges will widen. There's no specific requirement for the widening range, but this widening is primarily intended to prevent irregular cracking caused by excessive material stretching. The transverse grooves in the circumferential direction, known as the second groove body, are primarily responsible for the continuous radial deformation of the flexspline during actual operation. Grooving perpendicular to this deformation direction helps relieve radial deformation pressure, reduces material folding, and thus increases flexspline life.

[0072] Example 8

[0073] Based on the above embodiments, Figure 10 As shown, this embodiment also provides a processing technology for the flexible wheel structure of the harmonic reducer as described above, including the following specific steps:

[0074] S1: stamping, stamping the pipe to the set thickness;

[0075] S2: cutting holes, machining a plurality of through-cut grooves 3 evenly spaced on the edge of one end of the pipe;

[0076] S3: Pressing and bending, pressing the portion of one end of the pipe corresponding to the plurality of grooves 3 into a ring structure to form a connecting plate;

[0077] S4: Punching, forming a plurality of bolt holes 5 at intervals on the connection plate and the plastic sealing member 2 formed in S3, and some of the bolt holes 5 on the connection plate are connected to the corresponding bolt holes 5 on the plastic sealing member 2;

[0078] S5: Sealing: fixing the plastic sealing member 2 on one end of the pipe.

[0079] This embodiment also provides a processing technology for a flexible wheel structure of a harmonic reducer. The processing technology is simple, efficient and low-cost.

[0080] Example 9

[0081] On the basis of Example 8, in this embodiment, the S1, the set thickness is 2-5 mm.

[0082] This solution has a simple structure, and the thickness of the pipe is reasonably designed to ensure the strength of the pipe.

[0083] Example 10

[0084] On the basis of any one of Embodiments 8 to 9, in this embodiment, before S1,

[0085] The method comprises the steps of: processing the steel pipe to a set thickness by hot rolling, cold rolling and cold drawing in sequence, and cutting the steel pipe to obtain the pipe fitting of a set length.

[0086] The steel pipe can be processed to the set thickness and length, which is convenient for processing.

[0087] The present invention provides a flexible pulley structure for a harmonic reducer. The processing technology of the flexible pulley new structure is as follows:

[0088] S0: processing the steel pipe to a set thickness by hot rolling, cold rolling and cold drawing in sequence, and cutting the steel pipe to obtain the pipe fitting of a set length;

[0089] S1: stamping, stamping the pipe to the set thickness;

[0090] S2: cutting holes, machining a plurality of through-cut grooves 3 evenly spaced on the edge of one end of the pipe;

[0091] S3: Pressing and bending, pressing the portion of one end of the pipe corresponding to the plurality of grooves 3 into a ring structure to form a connecting plate;

[0092] S4: Punching, forming a plurality of bolt holes 5 at intervals on the connection plate and the plastic sealing member 2 formed in S3, and some of the bolt holes 5 on the connection plate are connected to the corresponding bolt holes 5 on the plastic sealing member 2;

[0093] S5: Sealing: fixing the plastic sealing member 2 on one end of the pipe.

[0094] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0095] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible wheel structure of a harmonic reducer, characterized by: The invention comprises a stamping part (1) and a plastic sealing part (2), wherein the stamping part (1) comprises a central tube and a connecting disk, wherein the connecting disk is coaxially fixed to one end of the central tube, and the connecting disk is provided with a plurality of through-cut grooves (3) evenly spaced along its circumference; and the plastic sealing part (2) is fixedly mounted on the connecting disk; The plastic sealing member (2) has a circular ring structure, and the outer diameter of the plastic sealing member (2) is equal to the diameter of the connecting disk; The connecting disk and the plastic sealing member (2) are provided with a plurality of bolt holes (5) at intervals along their circumferences, and some of the bolt holes (5) on the connecting disk are connected to the corresponding bolt holes (5) on the plastic sealing member (2); The plurality of bolt holes (5) on the connecting disk are divided into a plurality of bolt hole groups, and the plurality of bolt hole groups and the plurality of slots (3) are alternately distributed along the circumference of the connecting disk; The cross section of each of the slots (3) is T-shaped, and each of the T-shaped slots (3) comprises a slot body 1 and a slot body 2 that are perpendicularly distributed to each other, and the slot body 1 and the slot body 2 respectively pass through both sides of the connecting disk; the slot body 1 extends radially along the connecting disk, and the slot body 2 is distributed circumferentially along the connecting disk.

2. The flexible wheel structure of the harmonic reducer according to claim 1, characterized in that: The wall thickness of the stamping part (1) is 0.2-0.4 mm.

3. The flexible wheel structure of the harmonic reducer according to claim 1, characterized in that: A gear ring (4) for cooperating with the rigid wheel of the harmonic reducer is provided on the thin end of the stamping part (1).

4. A processing technology for the flexible wheel structure of a harmonic reducer according to any one of claims 1 to 3, characterized in that: The specific steps include: S1: stamping, stamping the pipe to the set thickness; S2: cutting holes, machining a plurality of through-cut grooves (3) evenly spaced on the edge of one end of the pipe; S3: bending, pressing the portion of one end of the pipe corresponding to the plurality of grooves (3) into a ring structure to form a connecting disc; S4: punching, processing a plurality of bolt holes (5) on the connecting plate and the plastic sealing member (2) at intervals in S3, and some of the bolt holes (5) on the connecting plate are connected to the corresponding bolt holes (5) on the plastic sealing member (2); S5: Sealing the plastic, fixing the plastic sealing member (2) on one end of the pipe.

5. The processing technology of the flexible spline structure of the harmonic reducer according to claim 4 is characterized in that: In S1, the set thickness is 2-5 mm.

6. The processing technology of the flexible wheel structure of the harmonic reducer according to claim 4 is characterized in that: The step S1 also includes S0: processing the steel pipe to a set thickness by hot rolling, cold rolling and cold drawing in sequence, and cutting the steel pipe to obtain the pipe fitting of a set length.

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