Tool for crimping pin bush of controller of alternating-current generator of certain type

Abstract

The utility model discloses a tool for crimping a pin bush of a certain type of alternating-current generator controller, and belongs to the field of tools for crimping pin bushes. Comprising a supporting module, a positioning module, a centering module and a force applying module which are sequentially arranged in the axial direction, and a to-be-pressed workpiece and a pin bush are located between the positioning module and the centering module; the supporting module and a workbench of the press machine are detachably connected, the supporting module and the positioning module are detachably connected, and a workpiece to be pressed is arranged on the supporting module through the positioning module. The centering module is coaxial with a mounting hole of a workpiece and a pin sleeve, the force application module is used for providing axial pressure, and the centering module is used for transmitting the axial pressure to the pin sleeve. The positioning and crimping tool is convenient to operate, ensures the technical requirements of pin bush crimping under the condition of reducing the stress of a case structure, is convenient for operators to use, and effectively improves the crimping efficiency of products.

Description

Technical Field

[0001] The utility model belongs to the field of tooling for crimping pin sleeves, and in particular relates to a tooling for crimping pin sleeves of a certain type of AC generator controller. Background Art

[0002] Previously, the tooling used for positioning the pin sleeve was primarily based on punch riveting. The tooling consists of two functional components: positioning and punch riveting. The tooling utilizes three screws as locating pins to position and limit the pin sleeve and the mounting holes on the chassis. A cylindrical punch at the top receives the punching force and transmits it back to the top of the pin sleeve. During operation, a hammer is used to strike the cylindrical punch, completing the punch riveting operation.

[0003] Punch riveting requires rigorous operator control. The chassis structure bears all the force during punch riveting, and excessive riveting force can cause deformation. Each joint must be located across the entire surface of the cylinder. Failure to do so can result in uneven riveting of the pin sleeve, leading to scrapping of the sleeve and, more importantly, severe deformation of the mounting hole, resulting in the chassis being scrapped. Riveting requires controlled force and repeated punching until the pin sleeve is completely flush with the chassis surface, which reduces work efficiency. Furthermore, the metal-on-metal noise produced during punch riveting can be detrimental to the operator. Summary of the Invention

[0004] Technical issues to be solved:

[0005] To overcome the shortcomings of the prior art, the present invention provides a tool for crimping the pin sleeves of a certain type of AC generator controller. A lower gasket is used to position the workpiece, a guide rod and an adjustable upper pressure head are used to align the pin sleeve with the mounting hole on the workpiece, and the upper pressure rod applies force to the adjustable upper pressure head to complete the assembly of the pin sleeve on the workpiece. This positioning and crimping tool is easy to operate, meets the technical requirements of pin sleeve crimping while reducing the stress on the chassis structure, is convenient for the operator, and effectively improves product crimping efficiency.

[0006] The technical solution of the present utility model is: a tool for crimping the pin sleeve of a certain type of AC generator controller, one end of the pin sleeve is a flange structure, and a plurality of through holes are opened circumferentially on the disk surface, and the other end is an equal-diameter sleeve structure; a pin sleeve mounting hole is provided on the mounting surface of the workpiece to be pressed, and a plurality of positioning holes are provided on the circumference coaxial with the mounting surface and the pin sleeve mounting hole, and the positioning holes correspond one-to-one to the through holes on the disk surface; the tool comprises a supporting module, a positioning module, a centering module and a force module arranged in sequence along the axial direction, and the workpiece to be pressed and the pin sleeve are located between the positioning module and the centering module; the supporting module and the worktable of the press and the supporting module and the positioning module are all detachably connected, and the workpiece to be pressed is placed on the supporting module through the positioning module; the centering module is coaxial with the mounting hole and the pin sleeve of the workpiece, the force module is used to provide axial pressure, and the centering module is used to transmit the axial pressure to the pin sleeve.

[0007] A further technical solution of the present utility model is: the support module consists of a base and a lower support rod, and a threaded hole and a through hole are provided on the end surface of the base, the upper threaded hole is used to install the lower support rod, and the upper through hole is used to install screws, and the base is installed on the workbench of the press through the screws; the lower support rod is a stepped shaft, and an external thread is provided on the outer peripheral surface of the bottom end, which is installed in conjunction with the threaded hole of the base, and a boss is provided on the top end surface for positioning and installing the positioning module.

[0008] A further technical solution of the present utility model is: the positioning module is a lower pad, and a groove is provided on the bottom surface of the lower pad. The groove and the boss on the upper end surface of the lower support rod are complementary structures, serving as a mounting groove for the boss; a positioning groove is provided on its upper end surface, and the positioning groove is complementary to the rib structure on the bottom surface of the workpiece to be pressed, serving as a mounting groove for the rib on the bottom surface of the workpiece to be pressed.

[0009] A further technical solution of the present invention is: the bottom groove of the lower gasket is a circular blind hole, the boss on the upper end face of the lower support rod is cylindrical, the inner diameter of the cylindrical blind hole is consistent with the outer diameter of the cylindrical boss, and they are installed through tolerance fitting.

[0010] A further technical solution of the present invention is: the centering module includes a guide rod and an adjusting upper pressure head, and multiple guide rods correspond one-to-one to the positioning holes on the workpiece, and their bottom ends are coaxially installed in the positioning holes, and the top ends pass through the positioning holes of the pin sleeve flange, which are used to coaxially position the pin sleeve placed above the workpiece; the force-bearing surface of the adjusting upper pressure head is docked with the force module, and the force surface is in relative contact with the pin sleeve flange; a plurality of guide holes are opened on the end face of the force surface along the circumferential direction, which correspond one-to-one to the guide rods passing through the positioning holes, and the inner diameter of the guide hole is larger than the diameter of the guide rod.

[0011] A further technical solution of the present invention is that the regulating upper pressure head is a columnar structure, the top surface of which serves as a force-bearing surface to connect with the force-applying module, and the bottom surface of which serves as a force-applying surface to contact with the pin sleeve flange.

[0012] A further technical solution of the present invention is that the force-applying module is an upper pressing rod, which is installed on a press machine as a crimping punch.

[0013] A further technical solution of the present invention is: the tooling further includes a gasket, which is arranged between the force-applying module and the adjusting upper pressure head and is used to adjust the punching depth.

[0014] A further technical solution of the present invention is that the end surface area of ​​the gasket is larger than the contact surface area of ​​the force-applying module and the upper pressure regulating head, so as to facilitate addition or replacement.

[0015] A further technical solution of the present invention is that the gaskets are designed as a series of gaskets with different thicknesses.

[0016] Beneficial effects

[0017] The beneficial effects of the utility model are that when the tooling is used to crimp the pin sleeve, the positioning of components is simple and accurate, the crimping is convenient and effective, the reliance on high technical requirements of workers during riveting is reduced, and the product processing efficiency is improved.

[0018] The controller produced using this tooling has been used in a certain type of aircraft. The tooling is easy to operate and ensures that the pin sleeve is crimped flat and accurately positioned without applying improper stress to the chassis structure. This improves the qualified rate and consistency of product crimping and solves the problem of the risk of chassis structure deformation when the riveting force is too large. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance of the chassis pin sleeve crimping in the embodiment of the utility model;

[0020] Figure 2 This is a diagram of the tooling structure in an embodiment of the present utility model.

[0021] Figure 3 This is a structural diagram of adjusting the upper pressure head in an embodiment of the present utility model.

[0022] Explanation of the accompanying reference numerals: 1. Base, 2. Lower support rod, 3. Lower pad, 4. Guide rod, 5. Adjusting upper pressure head, 6. Upper pressure rod, 7. Gasket; 8. Chassis structure, 9. Pin sleeve, 10. Screw. DETAILED DESCRIPTION

[0023] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] When the existing stamping equipment is used for riveting, the chassis structure bears all the impact force, and the chassis structure may be deformed when the riveting force is too large; it is required that each bearing point must be on the entire surface of the cylinder, otherwise the pin sleeve may not be riveted flat, resulting in the scrapping of the pin sleeve, and it is more likely that the chassis will be scrapped due to serious deformation of the mounting hole; when riveting, it is necessary to control the force and rivet multiple times until the pin sleeve is completely flush with the chassis surface, which is inefficient; at the same time, the metal impact noise during riveting has an adverse effect on the operator and other problems. In response to the problems of chassis pin sleeve crimping, the utility model proposes a tool for crimping the pin sleeve of a certain type of AC generator controller, the tool includes a support module, a positioning module, a centering module and a force module arranged in sequence along the axial direction, the workpiece to be pressed and the pin sleeve are located between the positioning module and the centering module; the support module and the workbench of the press, and the support module and the positioning module are all detachably connected, and the workpiece to be pressed is placed on the support module through the positioning module; the centering module is coaxial with the mounting hole and the pin sleeve of the workpiece, the force module is used to provide axial pressure, and the centering module is used to transmit the axial pressure to the pin sleeve.

[0026] One end of the pin sleeve is a flange structure with multiple through holes opened circumferentially on the disk surface, and the other end is an equal-diameter sleeve structure; a pin sleeve mounting hole is provided on the mounting surface of the workpiece to be pressed, and multiple positioning holes are provided on the circumference coaxial with the mounting surface and the pin sleeve mounting hole, and the positioning holes correspond one-to-one to the through holes on the disk surface.

[0027] Specifically, the support module consists of a base and a lower support rod, and a threaded hole and a through hole are provided on the end surface of the base. The upper threaded hole is used to install the lower support rod, and the upper through hole is used to install screws, and the base is installed on the workbench of the press through the screws; the lower support rod is a stepped shaft, and an external thread is provided on the outer peripheral surface of the bottom end, which is installed in conjunction with the threaded hole of the base, and a boss is provided on the top end surface for positioning and installing the positioning module.

[0028] Specifically, the positioning module is a lower pad, and a groove is provided on the bottom surface of the lower pad. The groove and the boss on the upper end surface of the lower support rod are complementary structures, serving as the mounting groove of the boss; a positioning groove is provided on its upper end surface, and the positioning groove is complementary to the rib structure on the bottom surface of the workpiece to be pressed, serving as the mounting groove for the rib on the bottom surface of the workpiece to be pressed.

[0029] Specifically, the bottom groove of the lower gasket is a circular blind hole, the boss on the upper end face of the lower support rod is cylindrical, the inner diameter of the cylindrical blind hole is consistent with the outer diameter of the cylindrical boss, and they are installed through tolerance fitting.

[0030] Specifically, the centering module includes a guide rod and an adjusting upper pressure head. Multiple guide rods correspond one-to-one to the positioning holes on the workpiece, and their bottom ends are coaxially installed in the positioning holes, and the top ends pass through the positioning holes of the pin sleeve flange, which are used to coaxially position the pin sleeve placed above the workpiece; the force-bearing surface of the adjusting upper pressure head is docked with the force module, and the force surface is in relative contact with the pin sleeve flange; a plurality of guide holes are opened on the end face of the force surface along the circumferential direction, which correspond one-to-one to the guide rods passing through the positioning holes, and the inner diameter of the guide hole is larger than the diameter of the guide rod.

[0031] Specifically, the regulating upper pressure head is a columnar structure, the top surface of which serves as a force-bearing surface to connect with the force-applying module, and the bottom surface of which serves as a force-applying surface to contact with the pin sleeve flange.

[0032] Specifically, the force-applying module is an upper pressing rod, which is installed on a press machine as a crimping punch.

[0033] Specifically, the tooling further includes a gasket, which is disposed between the force-applying module and the adjusting upper pressure head and is used to adjust the punching depth.

[0034] Specifically, the end surface area of ​​the gasket is larger than the contact surface area of ​​the force-applying module and the upper pressure regulating head, so as to facilitate addition or replacement.

[0035] Specifically, the gaskets are designed as a series of gaskets with different thicknesses.

[0036] The above technical solution is further described below with reference to the accompanying drawings:

[0037] Reference Figure 1 As shown, in this embodiment, all workpieces are chassis structures, and the pin sleeves are Figure 1 Right side structure.

[0038] Reference Figure 2 As shown, the base 1 is mounted on the press via hexagonal screws, the lower support rod 2 is assembled on the base 1, and the lower gasket 3 is mounted on the cylindrical support head of the lower support rod 2 via a circular positioning hole. The upper press rod 6 replaces the original press crimping punch.

[0039] Working process:

[0040] When crimping the pin sleeve, install the three guide rods 4 into the three mounting holes on the mounting surface of the chassis structure, then pass the pin sleeve through the guide rods so that the pin sleeve is placed directly above the mounting hole of the chassis structure, and then align the positioning hole on the bottom surface of the adjustable upper pressure head 5 with the guide rods and place it directly above the pin sleeve. The ribs on the inner side of the chassis structure are clamped in the groove of the lower pad 3, and the position and angle of the chassis structure are adjusted so that the lower support rod 2, the adjustable upper pressure head 5 and the upper pressure rod 6 are on the same axis, and the press is operated to start crimping. During crimping, due to the limited step size of the press, in order to improve the crimping efficiency and ease of operation, gaskets 7 are gradually added to the upper surface of the upper pressure head 5 to advance the crimping depth of the pin sleeve until the lower bottom surface of the pin sleeve is in full contact with the chassis structure and the crimping is completed.

[0041] The controller processed and produced using the utility model has been used in a certain type of aircraft. The tooling is easy to operate and ensures the technical requirements of flat pin sleeve crimping and accurate positioning while avoiding improper stress on the chassis structure. It improves the qualified rate and consistency of product crimping and solves the problem of the risk of chassis structure deformation when the riveting force is too large.

[0042] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A tool for crimping a pin sleeve of a certain type of AC generator controller, wherein one end of the pin sleeve is a flange structure with multiple through holes circumferentially formed on the disc surface, and the other end is a sleeve structure of equal diameter; a pin sleeve mounting hole is provided on the mounting surface of the workpiece to be press-fitted, and multiple positioning holes are provided on a circumference coaxial with the mounting surface and the pin sleeve mounting hole, with the positioning holes corresponding one-to-one with the through holes on the disc surface; and characterized by: The tooling includes a supporting module, a positioning module, a centering module and a force-applying module arranged in sequence along the axial direction. The workpiece to be pressed and the pin sleeve are located between the positioning module and the centering module. The supporting module and the workbench of the press, as well as the supporting module and the positioning module, are all detachably connected. The workpiece to be pressed is placed on the supporting module through the positioning module. The centering module is coaxial with the mounting hole and the pin sleeve of the workpiece. The force-applying module is used to provide axial pressure, and the centering module is used to transmit the axial pressure to the pin sleeve.

2. A tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 1, characterized in that: The support module consists of a base and a lower support rod. A threaded hole and a through hole are provided on the end surface of the base. The upper threaded hole is used to install the lower support rod, and the upper through hole is used to install screws. The base is installed on the workbench of the press through the screws; the lower support rod is a stepped shaft, and an external thread is provided on the outer peripheral surface of the bottom end, which is installed in conjunction with the threaded hole of the base, and a boss is provided on the top end surface for positioning and installing the positioning module.

3. A tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 2, characterized in that: The positioning module is a lower pad, and a groove is provided on the bottom surface of the lower pad. The groove and the boss on the upper end surface of the lower support rod are complementary structures, serving as a mounting groove for the boss; a positioning groove is provided on its upper end surface, and the positioning groove is complementary to the rib structure on the bottom surface of the workpiece to be pressed, serving as a mounting groove for the rib on the bottom surface of the workpiece to be pressed.

4. A tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 3, characterized in that: The bottom groove of the lower liner is a circular blind hole, the boss on the upper end face of the lower support rod is cylindrical, the inner diameter of the cylindrical blind hole is consistent with the outer diameter of the cylindrical boss, and they are installed through tolerance matching.

5. The tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 4, characterized in that: The centering module includes a guide rod and an adjustable upper pressure head. Multiple guide rods correspond one-to-one to the positioning holes on the workpiece. The bottom ends of the guide rods are coaxially installed in the positioning holes, and the top ends pass through the positioning holes of the pin sleeve flange, which are used to coaxially position the pin sleeve placed above the workpiece; the force-bearing surface of the adjustable upper pressure head is docked with the force module, and the force surface is in relative contact with the pin sleeve flange; a plurality of guide holes are opened on the end face of the force surface along the circumferential direction, which correspond one-to-one to the guide rods passing through the positioning holes, and the inner diameter of the guide hole is larger than the diameter of the guide rod.

6. A tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 5, characterized in that: The regulating upper pressure head is a columnar structure, the top surface of which serves as a force-bearing surface to connect with the force-applying module, and the bottom surface of which serves as a force-applying surface to contact with the pin sleeve flange.

7. A tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 6, characterized in that: The force-applying module is an upper pressing rod, which is installed on the press as a crimping punch.

8. The tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 7, characterized in that: The tooling also includes a gasket, which is arranged between the force application module and the upper pressure head for adjusting the punching depth.

9. The tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 8, characterized in that: The end surface area of ​​the gasket is larger than the contact surface area of ​​the force application module and the upper pressure regulating head, so as to facilitate addition or replacement.

10. The tool for crimping a pin sleeve of a certain type of AC generator controller according to claim 9, characterized in that: The gaskets are designed as a series of gaskets with different thicknesses.

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