Harmonic reducer cup-shaped flexible gear tool

Abstract

The utility model relates to the technical field of mechanical surface machining, in particular to a harmonic reducer cup-shaped flexible gear tool which is installed on a public tool base of shot blasting equipment. Comprising a supporting column installed on a public tool base, a supporting base placed on the top of the supporting column and used for containing the flexible gear, a lower end protection cover used for being matched with the supporting base to clamp the flexible gear, and a connecting rod used for fixedly installing the lower end protection cover and the supporting base to the supporting column together. The supporting seat and the lower end protection cover are both made of low-elasticity materials with the hardness lower than that of the flexible gear. The flexible gear fixing device has the advantages that the flexible gear is stably fixed through the design of the low-elasticity materials, and the surface of the flexible gear cannot be damaged.

Description

Technical Field

[0001] This application relates to the technical field of mechanical surface processing, and in particular to a cup-shaped flexible wheel tooling for a harmonic reducer. Background Technology

[0002] As the core elastic element of a harmonic reducer, the surface treatment process of the flex wheel directly determines the product's fatigue life and transmission accuracy. Shot peening is a key process for improving the performance of the flex wheel. By impacting the metal surface with a high-speed shot stream, residual processing stress can be effectively eliminated, the surface grain structure can be refined, and a beneficial compressive stress layer can be formed, thereby significantly improving the workpiece's resistance to fretting wear and contact fatigue strength.

[0003] The shot peening solutions commonly used in the industry currently have the following technical defects: First, in the workpiece clamping process, bolts are typically used to axially press the flexible wheel onto the end face of the support column. This rigid connection structure is prone to stress concentration due to centrifugal vibration under high-speed rotation conditions, leading to plastic deformation of the thin-walled flexible wheel gear ring, resulting in out-of-tolerance tooth profile accuracy. Furthermore, the rigid connection itself can also damage the flexible wheel.

[0004] Secondly, traditional bolted connections are prone to preload decay under prolonged alternating loads, leading to circumferential displacement between the workpiece and the support column. This offset causes the incident angle between the shot peening jet and the workpiece surface to deviate from the design value, resulting in decreased shot coverage uniformity and severely affecting the consistency of the surface strengthening layer. Experimental data shows that when the offset exceeds 0.5 mm, the microhardness dispersion of the tooth surface increases to over 15%.

[0005] Furthermore, existing processes lack masking methods. For flexible wheel products with non-shot-peened areas (such as inner hole mating surfaces and end face positioning references), only secondary processing can be used to remove the accidentally shot-peened layer. This not only increases production costs but also leads to the risk of out-of-tolerance critical dimensions. Utility Model Content

[0006] To address the aforementioned issues, this application provides a cup-shaped flex wheel fixture for a harmonic reducer.

[0007] This application provides a cup-shaped flexible wheel fixture for a harmonic reducer, which adopts the following technical solution:

[0008] A cup-shaped flexible wheel fixture for a harmonic reducer is installed on a common fixture base of a shot peening equipment. It includes a support column installed on the common fixture base, a support seat placed on top of the support column for placing the flexible wheel, a lower protective cover for clamping the flexible wheel in cooperation with the support seat, and a connecting rod for fixing the lower protective cover and the support seat together to the support column. The support seat and the lower protective cover are both made of a low-elasticity material with a hardness lower than that of the flexible wheel.

[0009] In one embodiment: the lower protective cover includes a covering portion for clamping the flexible wheel in cooperation with the support seat, and a positioning portion for radially positioning the flexible wheel, wherein the thickness of the positioning portion along the axial direction is less than or equal to the thickness of the bottom of the flexible wheel.

[0010] In one embodiment: the support column is provided with a positioning groove, and the support base is provided with a plug-in part that mates with the positioning groove.

[0011] In one embodiment: the connecting rod is threadedly connected to the support column.

[0012] In one embodiment: the connecting rod is engaged with the support column.

[0013] In one embodiment: the support column is provided with an elastic locking pin and an operating component for controlling the unlocking of the elastic locking pin, and the connecting rod is provided with a plurality of locking teeth distributed along the axial direction.

[0014] In one embodiment, the elastic pin includes a pin that slides radially along the support column, a mounting bolt threaded onto the support column, and an elastic element with its two ends abutting against the pin and the mounting bolt, respectively.

[0015] In one embodiment: the end of the locking pin is a right-angled triangle, and the shape of the locking teeth is adapted to the locking pin.

[0016] In one embodiment: the cup-shaped flexure tooling of the harmonic reducer further includes an upper protective cover fitted onto the open end of the flexure.

[0017] In summary, this application has the following beneficial effects:

[0018] 1. The low-elasticity material on both sides is designed to form a clamp, which has the advantages of stably fixing the flexible wheel and not damaging the surface of the flexible wheel;

[0019] 2. The lower protective cover and support base can also be designed in the required dimensions to cover and protect the areas on the inner and outer end faces of the bottom of the flexible wheel that do not require shot peening.

[0020] 3. The design of the upper protective cover can cover and protect the area on the inner wall of the flexible wheel opening that does not require shot peening. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of Embodiment 1;

[0022] Figure 2 This is a cross-sectional view of Embodiment 1;

[0023] Figure 3 This is a schematic diagram of the exploded structure of Example 1;

[0024] Figure 4 This is a structural schematic diagram of Embodiment 2;

[0025] Figure 5 This is a cross-sectional view of Embodiment 2;

[0026] Figure 6 yes Figure 5 Enlarged view of part A.

[0027] In the diagram, 10 is the flexible wheel; 100 is the common tooling base; 200 is the support column; 210 is the positioning groove; 300 is the support seat; 310 is the insertion part; 400 is the lower protective cover; 410 is the covering part; 420 is the positioning part; 500 is the connecting rod; 510 is the locking tooth; 600 is the upper protective cover; 700 is the elastic locking pin; 710 is the locking pin; 720 is the mounting bolt; 730 is the elastic element; and 800 is the operating part. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Example 1: A cup-shaped flexible wheel fixture for a harmonic reducer, which is installed on a common fixture base 100 of a shot peening equipment, such as... Figure 1 and Figure 2 As shown, it includes a support column 200 mounted on a common tooling base 100, a support seat 300 placed on top of the support column 200 for placing the flexible wheel 10, a lower protective cover 400 for cooperating with the support seat 300 to clamp the flexible wheel 10, a connecting rod 500 for fixing the lower protective cover 400 and the support seat 300 together to the support column 200, and an upper protective cover 600 sleeved on the open end of the flexible wheel 10.

[0031] Both the lower protective cover 400 and the support base 300 are provided with through holes. The connecting rod 500 passes through the lower protective cover 400 and the support base 300 in sequence and is then threadedly connected to the support.

[0032] Reference Figure 3 The support column 200 is provided with a positioning groove 210, and the support base 300 is provided with a plug-in part 310 that cooperates with the positioning groove 210.

[0033] Both the support base 300 and the lower protective cover 400 are made of a low-elasticity material with a hardness lower than that of the flexible wheel 10. In this embodiment, the support base 300 and the lower protective cover are made of nylon. This material has moderate hardness, strong impact resistance, and can extend service life. It is respectively fitted onto the upper and lower ends of the flange of the flexible wheel 10, which can effectively protect the unprocessed area. Furthermore, the adjustable elastic clamping method can firmly clamp the flexible wheel 10 while avoiding damage to the surface of the flexible wheel 10.

[0034] like Figure 2 and Figure 3 As shown, the lower protective cover 400 includes a covering portion 410 for clamping the flexible wheel 10 in cooperation with the support base 300, and a positioning portion 420 for radially positioning the flexible wheel 10. The thickness of the positioning portion 420 along the axial direction is less than or equal to the thickness of the bottom of the flexible wheel 10. In this embodiment, it is equal to the thickness of the bottom of the flexible wheel 10.

[0035] In this embodiment, the connecting rod 500 adopts a bolt structure.

[0036] Example 2: As Figure 4 and Figure 5 As shown, the difference from Embodiment 1 is that the connecting rod 500 and the support column 200 are engaged.

[0037] The support column 200 is provided with an elastic locking pin 700 and an operating element 800 for controlling the unlocking of the elastic locking pin 700. The connecting rod 500 is provided with a plurality of locking teeth 510 distributed along the axial direction, and the locking teeth 510 are preferably distributed at equal intervals.

[0038] See attached document Figure 6 The elastic locking pin 700 includes a locking pin 710 that is radially slidably installed along the support column 200, a mounting bolt 720 that is threadedly connected to the support column 200, and an elastic element 730 whose two ends abut against the locking pin 710 and the mounting bolt 720 respectively. In this embodiment, the elastic element 730 is selected as a spring.

[0039] In addition, to facilitate the positioning of the spring, a groove is preferably provided on the locking pin 710 for one end of the spring to be inserted.

[0040] The end of the locking pin 710 is a right-angled triangle with the inclined surface of the right-angled triangle facing upwards. Thus, when the connecting rod 500 is inserted, the locking pin 710 is pushed to compress the elastic element 730. The shape of the locking tooth 510 is adapted to the locking pin 710.

[0041] The operating component 800 is connected to the locking pin 710 after passing through the mounting bolt 720. For easy installation, one end of the operating component 800 is threaded to the locking pin 710, and the other end is provided with a handle for easy pulling.

[0042] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cup-shaped flexible wheel fixture for a harmonic reducer, which is mounted on a common fixture base (100) of a shot peening equipment, characterized in that: It includes a support column (200) mounted on a common tooling base (100), a support seat (300) placed on top of the support column (200) for placing the flexible wheel (10), a lower protective cover (400) for cooperating with the support seat (300) to clamp the flexible wheel (10), and a connecting rod (500) for fixing the lower protective cover (400) and the support seat (300) together on the support column (200); the support seat (300) and the lower protective cover (400) are both made of a low-elasticity material with a hardness lower than that of the flexible wheel (10).

2. The cup-shaped flexible wheel fixture for harmonic reducers according to claim 1, characterized in that: The lower protective cover (400) includes a covering part (410) for clamping the flexible wheel (10) in cooperation with the support base (300) and a positioning part (420) for radially positioning the flexible wheel (10), wherein the thickness of the positioning part (420) along the axial direction is less than or equal to the thickness of the bottom of the flexible wheel (10).

3. The cup-shaped flexible wheel fixture for harmonic reducers according to claim 1, characterized in that: The support column (200) is provided with a positioning groove (210), and the support base (300) is provided with a plug-in part (310) that cooperates with the positioning groove (210).

4. The cup-shaped flexible wheel fixture for harmonic reducers according to claim 1, characterized in that: The connecting rod (500) is threadedly connected to the support column (200).

5. The cup-shaped flexible wheel fixture for harmonic reducers according to claim 1, characterized in that: The connecting rod (500) is engaged with the support column (200).

6. The cup-shaped flexure tooling for the harmonic reducer according to claim 5, characterized in that: The support column (200) is provided with an elastic locking pin (700) and an operating component (800) for controlling the unlocking of the elastic locking pin (700). The connecting rod (500) is provided with a plurality of locking teeth (510) distributed along the axial direction.

7. The cup-shaped flexure tooling for the harmonic reducer according to claim 6, characterized in that: The elastic locking pin (700) includes a locking pin (710) that is radially slidably installed along the support column (200), a mounting bolt (720) threaded onto the support column (200), and an elastic element (730) with its two ends respectively abutting against the locking pin (710) and the mounting bolt (720).

8. The cup-shaped flexure tooling for the harmonic reducer according to claim 7, characterized in that: The end of the locking pin (710) is a right-angled triangle, and the shape of the locking tooth (510) is adapted to the locking pin (710).

9. The cup-shaped flexible wheel fixture for a harmonic reducer according to claim 1, characterized in that: The cup-shaped flexure tooling of the harmonic reducer also includes an upper protective cover (600) fitted onto the open end of the flexure (10).

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