Expanded cover and riveting integrated tooling

Abstract

The utility model discloses an integrated tooling for expanding an outer cover and press riveting, which includes a lower assembly and an upper assembly; the lower assembly includes a lower base plate, a lower rivet seat, a circumferential positioning pin, a support ring, a center positioning shaft, a compression spring and a spring limit pin, the lower rivet seat is arranged on the lower base plate, the lower half of the lower rivet seat is a correction section for expanding and correcting the outer cover, and the correction section is a truncated cone with a small upper portion and a large lower portion; the upper assembly includes an upper base plate, an upper cover plate, a pad arranged between the upper base plate and the upper cover plate, and a press riveting column arranged on the upper cover plate, the upper base plate, the pad and the upper cover plate are connected as a whole by screws, and the press riveting column corresponds to the rivets in the outer cover assembly one by one. The utility model is an integrated tooling for expanding an outer cover and press riveting, which can complete the riveting of the rivets in the outer cover assembly at one time, and has high riveting efficiency; and the outer cover can also be expanded and corrected while riveting, thereby solving the problem of the outer cover fork tine adduction deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical tooling, in particular to a tooling for a clutch outer cover assembly. Background Art

[0002] like Figure 1 As shown, the outer cover assembly of the motorcycle clutch includes an outer cover 1, a gear 2, a buffer spring 3, a cover plate 4 and a rivet 5. The outer cover assembly forms a whole under the riveting of the rivet 5. There are a number of rivets 5 evenly distributed in the circumferential direction. When the sample is trial-produced, the rivets can be riveted one by one on a riveting machine, but in mass production, it is necessary to design tooling to rivet the outer cover assembly.

[0003] In addition, the outer cover is an aluminum alloy die-casting, and the transmission fork teeth 101 of the outer cover may be deformed inward due to thermal expansion and contraction, collision, etc. after die-casting demolding. The inward deformation may make it difficult to flexibly install the clutch center sleeve assembly into the outer cover assembly. Therefore, the fork teeth part of the outer cover also needs to be expanded and corrected. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an integrated tooling for expanding the outer cover and riveting, so as to solve the technical problems of riveting and expansion correction of the outer cover combination.

[0005] The utility model of the integrated expansion cover and riveting tool comprises a lower assembly and an upper assembly;

[0006] The lower assembly comprises a lower base plate, a lower rivet seat, a circumferential positioning pin, a support ring, a center positioning shaft, a compression spring and a spring limit pin, the lower rivet seat is arranged on the lower base plate, the lower half of the lower rivet seat is a correction section for expanding and correcting the outer cover, the correction section is a truncated cone with a small upper portion and a large lower portion; a vertical through hole is arranged in the middle of the lower rivet seat, the support ring, the center positioning shaft, the compression spring and the spring limit pin are located in the vertical through hole, the center positioning shaft comprises a lower shaft section connected to the lower base plate, a middle shaft section slidingly matched with the support ring up and down, and an upper shaft section for positioning the outer cover, the upper end of the compression spring is pressed against the lower end surface of the support ring, the lower end of the compression spring is pressed against the lower base plate, the spring limit pin is fixed on the lower rivet seat, and the spring limit pin is passed through the lower end of the compression spring; the circumferential positioning pin is horizontally arranged on the upper half of the lower rivet seat;

[0007] The upper assembly includes an upper base plate, an upper cover plate, a pad arranged between the upper base plate and the upper cover plate, and a riveting column arranged on the upper cover plate. The upper base plate, the pad plate and the upper cover plate are connected into one body by screws, and the riveting columns correspond one-to-one to the rivets in the outer cover assembly.

[0008] Furthermore, a nut for fixing the center positioning shaft is provided on the lower shaft section.

[0009] Beneficial effects of the utility model:

[0010] 1. The utility model has an integrated tooling for expanding the outer cover and pressing and riveting, which can complete the riveting of the rivets in the outer cover assembly at one time, and the riveting efficiency is high.

[0011] 2. The utility model has an integrated tooling for expanding the outer cover and pressing and riveting, which can expand and correct the outer cover while riveting, thereby solving the problem of inward deformation of the outer cover fork teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the outer cover.

[0013] Figure 2 It is a cross-sectional structural diagram of the expansion cover and the integrated riveting tooling. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] As shown in the figure, the expansion cover and riveting integrated tooling of this embodiment includes a lower assembly and an upper assembly.

[0016] The lower assembly includes a lower base plate 1, a lower rivet seat 2, a circumferential positioning pin 3, a support ring 4, a center positioning shaft 5, a compression spring 6 and a spring limit pin 7. The lower rivet seat is arranged on the lower base plate. The lower half 21 of the lower rivet seat is a correction section for expanding and correcting the outer cover. The correction section is a truncated cone with a small upper part and a large lower part. A vertical through hole is arranged in the middle of the lower rivet seat. The support ring, the center positioning shaft, the compression spring and the spring limit pin are located in the vertical through hole. The center positioning shaft 5 includes a lower shaft section 51 connected to the lower base plate, a middle shaft section 52 which slides up and down with the support ring, and an upper shaft section 53 for positioning the outer cover. The upper end of the compression spring is pressed against the lower end surface of the support ring, and the lower end of the compression spring is pressed against the lower base plate. The spring limit pin is fixed on the lower rivet seat, and the spring limit pin is passed through the lower end of the compression spring. The circumferential positioning pin is horizontally arranged on the upper half 22 of the lower rivet seat.

[0017] The upper assembly includes an upper base plate 8, an upper cover plate 9, a pad 10 arranged between the upper base plate and the upper cover plate, and a riveting column 11 arranged on the upper cover plate. The upper base plate, the pad and the upper cover plate are connected into one body by screws 12, and the riveting columns correspond one-to-one to the rivets in the outer cover assembly.

[0018] In the specific implementation, the lower assembly is arranged on the working table of the press riveting machine, the upper assembly is arranged on the lifting part of the press riveting machine, and the outer cover assembly is arranged as follows. Figure 2As shown, it is placed on the lower assembly, and the center of the outer cover assembly is positioned by cooperating with the central positioning shaft 5 and the inner hole of the outer cover, and the circumferential positioning pin 3 enters the tooth groove between the adjacent fork teeth on the outer cover, so as to realize the positioning of the outer cover assembly circumferential position, so as to ensure that the pressure riveting column 11 and the rivets on the outer cover assembly are aligned one by one. In the initial state, the outer cover assembly is supported by the compression spring 6 and the support ring 4 so that there is a certain gap between the lower end of the rivet and the top surface of the lower rivet seat 2, and then the upper assembly moves downward under the drive of the pressure riveting machine, and the pressure riveting column 11 presses on the upper end of the rivet to push the outer cover assembly downward as a whole. During the downward movement, the lower end of the rivet is pressed on the lower rivet seat 2 and gradually deforms and increases, thereby riveting the outer cover assembly into a whole. At the same time, the fork teeth of the outer cover assembly are expanded outward during the downward sliding process along the lower half 21 of the lower rivet seat 2, thereby realizing the expansion correction of the outer cover.

[0019] As an improvement to the above embodiment, a nut 13 for fixing the center positioning shaft is provided on the lower shaft section 51. The lower shaft section 51 is fixed with a nut, which is convenient for assembly and the center positioning shaft 5 can be reliably fixed.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. The expansion cover and riveting integrated tooling is characterized by: It includes a lower assembly and an upper assembly; The lower assembly comprises a lower base plate, a lower rivet seat, a circumferential positioning pin, a support ring, a center positioning shaft, a compression spring and a spring limit pin, the lower rivet seat is arranged on the lower base plate, the lower half of the lower rivet seat is a correction section for expanding and correcting the outer cover, the correction section is a truncated cone with a small upper portion and a large lower portion; a vertical through hole is arranged in the middle of the lower rivet seat, the support ring, the center positioning shaft, the compression spring and the spring limit pin are located in the vertical through hole, the center positioning shaft comprises a lower shaft section connected to the lower base plate, a middle shaft section slidingly matched with the support ring up and down, and an upper shaft section for positioning the outer cover, the upper end of the compression spring is pressed against the lower end surface of the support ring, the lower end of the compression spring is pressed against the lower base plate, the spring limit pin is fixed on the lower rivet seat, and the spring limit pin is passed through the lower end of the compression spring; the circumferential positioning pin is horizontally arranged on the upper half of the lower rivet seat; The upper assembly includes an upper base plate, an upper cover plate, a pad arranged between the upper base plate and the upper cover plate, and a riveting column arranged on the upper cover plate. The upper base plate, the pad plate and the upper cover plate are connected into one body by screws, and the riveting columns correspond one-to-one to the rivets in the outer cover assembly.

2. The expansion cover and riveting integrated tooling according to claim 1 is characterized in that: The lower shaft section is provided with a nut for fixing the center positioning shaft.

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