Riveting device

Abstract

The utility model relates to a riveting device, belongs to the technical field of motors, and solves the problems that in the prior art, a positioning and clamping mechanism in a riveting device used for riveting balance columns and balance rings cannot effectively clamp multiple kinds of balance columns, and the stability and the riveting precision during riveting of the balance columns and the balance rings are affected. The riveting device comprises a supporting unit, a riveting unit and a clamp unit. The supporting unit comprises a platform, and a clamp groove is formed in the upper portion of the platform. The clamp unit comprises a replaceable clamp; the replaceable clamp is arranged in the clamp groove; the replaceable clamp is provided with a central round hole; the number of the replaceable clamps is multiple, and the diameters of center round holes of the replaceable clamps are different so that the replaceable clamps can adapt to balance columns of different diameters. And / or the clamp unit further comprises a V-shaped clamp assembly, and the V-shaped clamp assembly comprises a V-shaped clamp and a cylindrical clamp located in the center of the V-shaped clamp. According to the utility model, the motor balance columns with various diameters can be clamped and positioned, the clamping is stable, and the positioning precision is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially relates to a riveting device. BACKGROUND

[0002] The balance column and the balance ring assembly of the motor rotor are important components of dynamic balance, the balance ring and the balance column are riveted connection, the positioning accuracy of the balance column and the balance ring in riveting is very important. The positioning and clamping mechanism in the existing riveting device for riveting the balance column and the balance ring cannot effectively clamp multiple kinds of balance columns, which affects the stability and riveting accuracy during riveting of the balance column and the balance ring. SUMMARY

[0003] In view of the above analysis, the utility model embodiment aims at providing a riveting device to solve the problem that the positioning and clamping mechanism in the existing riveting device for riveting the balance column and the balance ring cannot effectively clamp multiple kinds of balance columns, which affects the stability and riveting accuracy during riveting of the balance column and the balance ring.

[0004] The utility model discloses a riveting device for riveting the balance column and the balance ring of the motor.

[0005] A riveting device for riveting the balance column and the balance ring of the motor, comprising a support unit, a riveting unit and a clamp unit.

[0006] The support unit comprises a platform, and a clamp groove is arranged on the upper part of the platform.

[0007] The clamp unit comprises a replaceable clamp, and the replaceable clamp is arranged in the clamp groove.

[0008] The clamp unit further comprises a V-shaped clamp assembly, and the V-shaped clamp assembly comprises a V-shaped clamp and a cylindrical clamp located at the center of the V-shaped clamp.

[0009] Further, the V-shaped clamp assembly further comprises a vertical plate and a spring one, and the vertical plate is fixed to one side of the V-shaped edge of the V-shaped clamp.

[0010] Further, the spring one is arranged between the vertical plate and the V-shaped edge, and the length direction of the spring one is perpendicular to the V-shaped edge.

[0011] Further, the angle between the two V-shaped edges of the V-shaped clamp is 120 degrees.

[0012] Further, the cylindrical clamp has a circular groove in the middle for inserting the balance column.

[0013] Further, the upper part of the cylindrical clamp is provided with a positioning pin hole around the axis in the circumferential direction.

[0014] Further, the platform has a tapered groove, and the V-shaped clamp is arranged on both sides of the tapered groove.

[0015] Further, the bottom of the cylindrical clamp has a tapered surface which can be inserted into the tapered groove for positioning the cylindrical clamp and the balancing column.

[0016] Further, the support unit further comprises a support and a stand; the support is arranged above the platform, and the support is used for supporting the riveting unit; and the stand is arranged between the support and the platform.

[0017] Further, the replaceable clamp has a central circular hole; the number of the replaceable clamps is multiple, and the central circular holes of the multiple replaceable clamps have different diameters, so as to adapt to balancing columns with different diameters.

[0018] Further, the cylindrical clamp further comprises a push block and a spring two; the push block and the spring two are used for clamping the balancing column; the push block has an arc-shaped structure which is coaxial with the cylindrical clamp; and the spring two is arranged between the push block and the inner wall of the cylindrical clamp, and the length direction of the spring two is the same as the radial extension line of the arc-shaped structure.

[0019] Further, a sliding groove is arranged below the push block, and the lower part of the push block has a protruding block which can extend into the sliding groove and move along the sliding groove.

[0020] Further, the cylindrical clamp has an upper part and a lower part, the upper part is internally provided with the push block and the spring two, and a screw rod and a nut are arranged between the upper part and the lower part; the nut is fixed to the lower end face of the upper part, and the nut can move on the screw rod, so as to adapt to balancing columns with different heights.

[0021] Further, the screw rod and the nut are arranged circumferentially along the axis of the cylindrical clamp.

[0022] Further, the cylindrical clamp has a double-layer structure of an inner layer and an outer layer, and the side walls of the inner layer and the outer layer are both provided with multiple groups of the positioning pin holes; each group of the positioning pin holes is uniformly distributed circumferentially along the cylindrical clamp; and the inner layer can be lifted to adapt to balancing columns with different heights.

[0023] Compared with the prior art, the utility model can realize at least one of the following beneficial effects:

[0024] (1) Compared with the prior art, the utility model discloses motor balance column, utilize the recess of platform and fixture together realize positioning and clamping function, through the fixture of replacement with different diameter center hole, make the fixture suitable for different diameter balance column. Compared with the prior art, the utility model sets up V-shaped fixture, guarantee the positioning accuracy of balance column, and V-shaped fixture can hold the balance column of different diameter, and the versatility is strong, and clamping is convenient. For the balance column that V-shaped fixture can not effectively hold of smaller diameter, set up cylindrical fixture guarantee the clamping of balance column.

[0025] (2) The utility model discloses V-shaped fixture outside sets up spring no. 1, and the elastic force direction of spring no. 1 is perpendicular to the side of V-shaped fixture, makes the balance column or cylindrical fixture in the center of V-shaped fixture not deviate.

[0026] (3) The utility model discloses setting up cylindrical fixture in V-shaped fixture, and balance column is placed in the center of cylindrical fixture, and the balance column is centered and clamped through the positioning pin, and the cylindrical fixture is clamped outside with V-shaped fixture, improves the stability of small diameter balance column. The bottom of cylindrical fixture of the utility model is provided with a tapered surface, which is matched with the tapered fixture recess of the platform, thereby improving the positioning accuracy of the cylindrical fixture and the balance column.

[0027] (4) Compared with the prior art, the utility model sets up cylindrical fixture in V-shaped fixture, and the cylindrical fixture is provided with a push block spring structure inside, and the cylindrical fixture has an upper part and a lower part, and a screw rod and a nut are arranged between the upper part and the lower part, the nut is fixed to the upper part, and the nut can drive the upper part of the cylindrical fixture to move up and down along the screw rod, thereby improving the adaptability of the fixture to balance columns of different diameters and avoiding shaking or breaking of the upper part of the balance column due to the influence of riveting force during riveting.

[0028] (5) Compared with the prior art, the cylindrical mold in the utility model is provided with an inner-outer double-layer structure, and the side walls of the inner layer and the outer layer are provided with a plurality of positioning pin holes for positioning balance columns of different heights. Moreover, the balance column is fixed by inserting a plurality of positioning pins along the axis of the balance column, thereby ensuring stable and reliable clamping of the balance column and improving the height adaptability to the balance column.

[0029] In the utility model, the above technical solutions can be combined with each other to realize more preferred combination solutions. Other features and advantages of the utility model will be described in the following content, and some advantages can become apparent from the description or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the content specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] The drawings are only used for the purpose of showing specific embodiments and are not considered as limiting the utility model, and the same reference signs represent the same parts throughout the drawings.

[0031] Figure 1 Structure diagram of riveting device of specific embodiment 1;

[0032] Figure 2 Structure diagram of platform of specific embodiment 1;

[0033] Figure 3 Structure diagram of square clamp of specific embodiment 1;

[0034] Figure 4 Structure diagram of platform taper slot of specific embodiment 2;

[0035] Figure 5 Structure diagram of V-shaped clamp unit of specific embodiment 2;

[0036] Figure 6 Structure diagram of cylindrical clamp of specific embodiment 2;

[0037] Figure 7 Structure diagram of clamp of specific embodiment 3;

[0038] Figure 8 Structure diagram of clamp of specific embodiment 4;

[0039] Figure 9 Structure diagram of clamp of specific embodiment 5.

[0040] Reference signs:

[0041] 1-support unit, 101-platform, 1011-column positioning slot, 1012-clamp groove, 102-column, 103-bracket, 2-riveting unit, 201-pneumatic rivet gun, 202-gas path, 3-clamp unit, 301-replaceable clamp, 302-V-shaped clamp assembly, 3021-vertical plate, 3022-spring one, 3023-V-shaped clamp, 3024-cylindrical clamp, 30241-positioning pin hole, 30242-push block, 30243-slotted guide, 30244-spring two, 30245-nut, 30246-screw, 4-balance column. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present application will be described in detail below with reference to the drawings, wherein the drawings constitute a part of the present application and serve to explain the principles of the present application together with the embodiments of the present application, but are not intended to limit the scope of the present application.

[0043] Embodiment 1

[0044] One specific embodiment of the present application is, for example, Figure 1As shown, a riveting device is disclosed, which is suitable for riveting work between balance column 4 and balance ring of small-batch motor rotor, including support unit 1, clamp unit 3 and riveting unit 2.

[0045] Support unit 1 includes platform 101, column 102 and bracket 103. Platform 101 is arranged at the lower part of the device, which is used to support workpieces and clamp unit. As shown in Figure 2 The one end of platform 101 is clamp groove 1012 with circular blind hole inside, which is used to place clamp unit 3, and the circular blind hole is used for positioning balance column 4; the other end has elliptical stepped groove, which is column positioning groove 101, used to place column 102, and column 102 can move in the groove.

[0046] Column 102 is arranged on one side of the upper part of platform 101, which is used to support bracket 103. Bracket 103 is arranged above column 102, which is used to support riveting unit 2. Bracket 103 has three stepped through holes, one of which at one end is used to embed riveting unit 2, and the other two at the other end are used to fix column 102.

[0047] Riveting unit 2 includes pneumatic rivet gun 201 and air path 202. Pneumatic rivet gun 201 and air path 202 are connected, which is used to rivet rivets into workpieces. The stepped part of pneumatic rivet gun 201 can be embedded in the circular stepped hole, and the gun barrel part used for riveting can be extended out of bracket 103 to rivet the workpiece located on platform 101.

[0048] Clamp unit 3 includes replaceable clamp 301. As shown in Figure 3 In this embodiment, replaceable clamp 301 is a rectangular block structure, and correspondingly, clamp groove 1012 of platform 101 is a rectangular recess, and replaceable clamp 301 can be embedded in clamp groove 1012 of platform 101 for positioning. Replaceable clamp 301 has a center circular hole in the middle corresponding to the circular blind hole in clamp groove 1012, which is used to position balance column 4. Threaded holes are arranged around the circular hole, which are used to insert bolts to fix workpieces.

[0049] Further, replaceable clamp 301 has multiple specifications, and the center circular holes of multiple replaceable clamps 301 have different diameters, which are used to position balance columns 4 with different diameters.

[0050] In use, first, the column 102 is connected to the platform 101, the bracket 103 is sleeved on the column 102, the pneumatic rivet gun 201 is fixed in the bracket 103, and the air path 202 is connected with the pneumatic rivet gun 201. On the platform 101, the replaceable clamp 301 is fixed in the square groove 1012 of the platform 101. The balance column 4 to be riveted is placed in the center hole of the clamp, the balance ring is sleeved on the balance column 4, the muzzle of the pneumatic rivet gun 201 is aligned with the riveting position through the bracket 103, and riveting is performed.

[0051] Compared with the prior art, the embodiment is aimed at the balance column 4 of the motor, and the positioning and clamping functions are realized by the clamp groove 1012 of the platform 101 and the replaceable clamp 301. The replaceable clamp 301 is suitable for balance columns 4 with different diameters by replacing the replaceable clamp 301 with different center holes.

[0052] Embodiment 2

[0053] The improvement of the embodiment over the embodiment 1 is that, in order to make the clamp more suitable for the balance column 4 and not to replace the clamp frequently, the clamp in the embodiment adopts a V-shaped clamp assembly 302. In order to make the centering of the clamp better, as shown in Figure 4 , the rectangular structure of the clamp groove 1012 of the platform 101 is changed into a conical structure.

[0054] As shown in Figure 5 , the V-shaped clamp assembly 302 includes a vertical plate 3021, a spring 3022 and a V-shaped clamp 3023.

[0055] The V-shaped clamp 3023 is at an angle of 120° and is arranged on both sides of the conical groove 1013. One side of the V-shaped clamp 3023 is provided with the vertical plate 3021, and the spring 3022 is arranged between the vertical plate 3021 and the V-shaped clamp 3023. The V-shaped clamp 3023 includes a V-shaped edge. The vertical plate 3021 and the spring 3022 are fixed on one side of each V-shaped edge. It should be noted that, in order to prevent the balance column 4 in the V-shaped clamp 3023 from deviating and ensure the relative stability of the position of the balance column 4 in the clamp, the length direction of the spring 3022 is perpendicular to the corresponding V-shaped edge, so that the elastic force direction of the spring 3022 is perpendicular to the V-shaped edge.

[0056] Further, considering that the V-shaped clamp 3023 may not be able to effectively clamp and position the balance column 4 with a smaller diameter, a cylindrical clamp 3024 is arranged in the middle of the V-shaped clamp 3023 in the embodiment. As shown in Figure 6As shown, the bottom of the cylindrical fixture 3024 is provided with a tapered surface 30242, which matches the fixture groove 1012 of the tapered groove of the platform 101. The cylindrical fixture 3024 can extend into the fixture groove 1012, and the cylindrical fixture 3024 has a high degree of centering by utilizing the conical centering property.

[0057] Furthermore, the cylindrical fixture 3024 has a circular groove in its center for inserting a smaller diameter balancing column 4. Positioning pin holes 30241 are provided circumferentially around the upper portion of the cylindrical fixture 3024 for inserting positioning pins. The positioning pins abut against the balancing column 4 to position the smaller diameter balancing column 4.

[0058] The V-shaped clamp 3023 is located outside the cylindrical clamp 3024 and further clamps the cylindrical clamp 3024 so that the cylindrical clamp 3024 and the workpiece will not deviate under the action of a large riveting force.

[0059] Compared to the prior art, this embodiment provides a V-shaped clamp 3023 to ensure the positioning accuracy of the balance column 4. Furthermore, the V-shaped clamp 3023 can clamp balance columns 4 of varying diameters, offering strong versatility and convenient installation. A spring 1 3022 is provided on the exterior of the V-shaped clamp 3023. The direction of the spring force of the spring 1 3022 is perpendicular to the edge of the V-shaped clamp 3023, preventing the balance column 4 or the cylindrical clamp 3024 at the center of the V-shaped clamp 3023 from shifting. For balance columns 4 with smaller diameters that cannot be effectively clamped by the V-shaped clamp 3023, a cylindrical clamp 3024 is provided. The cylindrical clamp 3024 mates with the tapered groove of the platform 101 via a tapered surface 30241. Positioning pins are used around the periphery to center and clamp the balance column 4. The cylindrical clamp 3024 is clamped externally by the V-shaped clamp 3023, improving the stability of the small-diameter balance column 4.

[0060] Example 3

[0061] When the positioning pin is clamped on the balance column 44 in Example 2, the positioning pin must have a certain height. The balance column 44 that is lower than the positioning pin height cannot use the positioning pin. Figure 7 As shown, the upper interior of the cylindrical fixture 3024 in this embodiment is a hollow cylindrical structure, housing a push block 30242 spring structure. This push block 30242 spring structure includes multiple push blocks 30242. In this embodiment, four push blocks 30242 are provided, evenly distributed around the circumference. The main body of each push block 30242 is a curved plate coaxial with the cylindrical fixture. The inner wall of the curved plate is configured to contact the balancing column 4. The portion of the curved plate facing away from the balancing column 4 has an extension, with the end of the extension being flat.

[0062] Further, the push block 30242 is provided below with a chute 30243, which is cross-shaped. The lower part of the arc-shaped plate of the push block 30242 is provided with a protrusion, which can extend into the chute 30243 and move along the chute 30243, so that the spring 30244 can stably clamp the balance column 4.

[0063] Further, the planar end of the extension part and the inner wall surface of the circular clamp are provided with the spring 30244, which is used to push the push block 30242 towards the balance column 4 to clamp the balance column 4. It should be noted that the length direction of the spring 30244 is arranged in the radial direction of the arc-shaped plate, and the elastic force direction is the same as the radial direction of the balance column 4 clamped by the arc-shaped plate, so that the balance column 4 can be stably clamped without deviation.

[0064] Compared with the prior art, the embodiment considers the height of the balance column 4, and provides the push block 30242, the spring 30244 and the chute 30243 in the cylindrical clamp 3024, so that the cylindrical clamp 3024 can adapt to the small-diameter balance column 4, further improve the stability of the small-diameter balance column 4, and also ensure the adaptability of the cylindrical clamp 3024 to balance columns 4 of different heights.

[0065] Embodiment 4

[0066] As shown in Figure 8 , the difference between the embodiment and embodiment 3 is that, in order to adapt to the different heights of the balance column 4 with a smaller diameter, the cylindrical clamp 3024 in the embodiment is provided as an adjustable structure. The cylindrical clamp 3024 has a through hole inside, and the balance column 4 is placed in the through hole. The cylindrical clamp 3024 is divided into an upper part and a lower part, the lower part includes a conical surface part, and the upper surface of the conical surface part is a plane; the upper part includes a cylindrical main body with a push block 30242 spring structure; the upper part and the lower part are provided with a screw rod 30246 and a nut 30245, and the nut 30245 is fixedly connected to the lower part of the cylindrical main body. The screw rod 30246 and the nut 30245 are provided in multiple numbers and are arranged circumferentially around the axis of the cylindrical clamp 3024; the nut 30245 can move up and down along the axial direction of the screw rod 30246.

[0067] When the height of the clamped balance column 4 is large, in order to avoid the upper part from shaking or breaking due to bearing a large riveting force during riveting, the nut 30245 is moved upwards along the axis of the screw rod 30246, the nut 30245 drives the cylindrical main body and the push block 30242 spring to move upwards, so that the push block 30242 spring always clamps the upper part of the balance column 4, and the balance column 4 will not shake, and a stable support can be formed during riveting.

[0068] Compared with the prior art, the cylindrical clamp 3024 is divided into two parts, and a screw rod 30246 and a nut 30245 are arranged between the two parts, the nut 30245 is fixed to the upper part, and the nut 30245 can move up and down along the screw rod 30246 to drive the upper part to move up and down, so that the upper part of the balance column 4 of different heights is clamped, so that the clamp is adapted to balance columns 4 of different diameters, and the adaptability to balance columns 4 of different heights is improved.

[0069] Embodiment 5

[0070] The embodiment is improved on the basis of embodiment 2, in order to adapt to balance columns of various heights, as shown in the figure, the cylindrical mold 3024 in the embodiment is provided with a double-layer structure of an inner layer and an outer layer, and a plurality of positioning pin holes 30241 are arranged on the side walls of the inner layer and the outer layer. Figure 9

[0071] When the balance column 4 is high, the inner layer and the outer layer cannot be stacked to clamp the upper part of the balance column 4 stably, the inner layer is lifted to a suitable height, the positioning pin can clamp the upper part of the balance column 4 after being inserted into the positioning pin hole 30241, and at least one set of the positioning pin holes 30241 of the inner layer and the outer layer coincide to fix the inner layer of the cylindrical clamp 3024. A plurality of positioning pins are inserted from top to bottom along the axis direction of the balance column 4 to fix the balance column 4, so that the balance column 4 is clamped stably and reliably, and will not shake under the action of a large riveting force.

[0072] Compared with the prior art, the cylindrical mold 3024 in the embodiment is provided with a double-layer structure of an inner layer and an outer layer, and a plurality of positioning pin holes 30241 are arranged on the side walls of the inner layer and the outer layer, so as to position the balance column 4 of different heights. And because a plurality of positioning pins are inserted along the axis of the balance column 4 to fix the balance column 4, the balance column 4 is clamped stably and reliably, and the adaptability to the height of the balance column 4 is improved.

[0073] 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 skilled person 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.​

Claims

1. A riveting device for riveting a balance post (4) of an electric machine to a balance ring, characterized in that, It comprises a support unit (1), a riveting unit (2) and a clamp unit (3); The support unit (1) comprises a platform (101), and a clamp groove (1012) is arranged on the upper portion of the platform (101); The clamp unit (3) comprises a replaceable clamp (301); the replaceable clamp (301) is arranged in the clamp groove (1012); The clamp unit (3) further comprises a V-shaped clamp assembly (302), and the V-shaped clamp assembly (302) comprises a V-shaped clamp (3023) and a cylindrical clamp (3024) located at the center of the V-shaped clamp (3023).

2. The riveting device of claim 1, wherein The V-shaped clamp assembly (302) further comprises a vertical plate (3021) and a spring (3022); the V-shaped clamp (3023) comprises a V-shaped edge, and the vertical plate (3021) is fixed to one side of the V-shaped edge of the V-shaped clamp (3023).

3. The riveting device of claim 2, wherein The spring (3022) is arranged between the vertical plate (3021) and the V-shaped edge, and the length direction of the spring (3022) is perpendicular to the V-shaped edge.

4. The riveting device of claim 2, wherein The two V-shaped edges of the V-shaped clamp (3023) form an included angle of 120°.

5. The riveting device of claim 1, wherein The cylindrical clamp (3024) has a circular groove in the middle for inserting a balance column (4).

6. The riveting device of claim 1, wherein The upper portion of the cylindrical clamp (3024) is provided with a positioning pin hole (30241) around the axis in the circumferential direction.

7. The riveting device of claim 1, wherein The clamp groove (1012) is a tapered groove, and the V-shaped clamp (3023) is arranged on both sides of the tapered groove.

8. The riveting device of claim 7, wherein The bottom of the cylindrical clamp (3024) has a tapered surface (30242), which can be inserted into the tapered groove for positioning of the cylindrical clamp (3024) and the balance column (4).

9. The riveting device of claim 1, wherein, The support unit (1) further comprises a support (103) and a vertical column (102); the support (103) is arranged above the platform (101) and is used for supporting the riveting unit (2); and the vertical column (102) is arranged between the support (103) and the platform (101).

10. The riveting device of claim 1, wherein, The replaceable clamp (301) has a central circular hole; and a plurality of replaceable clamps (301) are provided, and the central circular holes of the plurality of replaceable clamps (301) have different diameters, so as to adapt to balance columns (4) with different diameters.

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