Servo electric radial riveting machine

Abstract

The utility model discloses a servo electric radial riveting machine which comprises a base, a table body is fixed on the base, a machine head capable of moving up and down and a height-adjustable working table are arranged on the table body, an upper die is installed on the machine head, a lower die matched with the upper die is fixed on the working table, and a motor and a lower end cover are respectively installed at the upper end and the lower end of the machine head. An output shaft of the motor is connected with an eccentric shaft, an eccentric gear shaft of an eccentric gear is movably mounted in an eccentric cavity of the eccentric shaft, the eccentric gear is meshed with an inner gear, the lower end of the eccentric gear shaft is rotatably connected with a spherical rotating seat, the spherical rotating seat is in surface contact with the spherical seat, and the eccentric shaft is rotatably arranged in an inner cavity of the lower end cover. The inner gear and the spherical seat are both installed in an inner cavity of a lower end cover, the lower end cover is connected with a rotary head cover, and an upper die penetrating through the rotary head cover is installed on the spherical rotary seat. According to the device, a riveted material can move in the radial direction to complete riveting with small axial force, the axial impact force is greatly reduced, and the stability and riveting quality of equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the partial improvement design technical field of riveting equipment especially relates to a kind of servo electric radial riveting machine. BACKGROUND

[0002] Riveting machine (also called riveting machine, riveting machine, riveting machine, riveting machine, etc.) is a new type of riveting equipment developed according to cold rolling principle, that is, mechanical equipment that can rivet with rivets, the equipment is compact in structure, stable in performance, riveting machine is mainly completed by rotation and pressure, mainly applied to riveting occasions requiring rivets (hollow rivets, hollow rivets, solid rivets, etc.). The traditional radial riveting machine relies on axial impact force to deform rivet for riveting, but this radial riveting machine does not control the downward pressing force, the axial impact force is too large, so that the up and down action cannot be stable, resulting in unstable riveting quality, and under high-strength use, the equipment will accelerate wear, greatly reducing the service life.

[0003] In the prior art, the patent with publication number CN218109249U discloses a continuous processing type riveting machine, comprising a workbench, a mechanical box is fixed on the upper surface of the workbench, a riveting machine body is arranged on one side of the upper surface of the mechanical box, a rotating plate is arranged on the upper surface of the mechanical box, two positioning seats are arranged at the two ends of the upper surface of the rotating plate, a rotating drive structure is arranged in the mechanical box, and a hydraulic rod is fixed at each corner of the lower surface of the workbench. In the utility model, the workbench, the mechanical box, the riveting machine body and the rotating plate are arranged, two positioning seats are arranged on the rotating plate, when the riveting machine is used to rivet parts, the rotating drive structure in the mechanical box can drive the rotating plate to rotate 180 degrees, so that the two positioning seats are alternately rotated to the lower side of the riveting machine body for riveting operation, so that continuous processing is realized, the processing efficiency is improved, and manual holding of the processed parts during processing is not required, the danger in the riveting process is reduced.

[0004] The patent with the publication number CN217551062U discloses a numerical control automatic rivet placing machine, which comprises a workpiece placing frame, a vibration type along-rail material arranging mechanism, a sensing material blocking mechanism, a multi-section type clamping anti-falling mechanism and a material conveying frame.

[0005] The present application provides a servo electric radial riveting machine to solve one of the above problems. Practical new type content

[0006] The servo electric radial riveting machine can make the riveted material move along the radial direction to complete riveting with small axial force, greatly reduces the axial impact force, and improves the stability and riveting quality of the equipment.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme: a servo electric radial riveting machine, comprising a base, a table body is fixed on the base, a machine head capable of lifting movement and a workbench capable of adjusting height are arranged on the table body, an upper die is installed on the machine head, a lower die matched with the upper die is fixed on the workbench, a motor and a lower end cover are respectively installed on the upper and lower ends of the machine head, an output shaft of the motor is connected with an eccentric shaft, an eccentric gear shaft of an eccentric gear is movably installed in an eccentric cavity of the eccentric shaft, the eccentric gear meshes with an internal gear, a lower end of the eccentric gear shaft is rotatably connected with a spherical rotary seat, the spherical rotary seat is in contact with a spherical seat surface, the eccentric shaft is rotatably arranged in an inner cavity of the lower end cover, the internal gear and the spherical seat are both installed in the inner cavity of the lower end cover, the lower end cover is connected with a rotating head cover, and the upper die penetrating the rotating head cover is installed on the spherical rotary seat.

[0008] Further, the output shaft of the motor is connected with the eccentric shaft through a shaft coupling.

[0009] Further, the output shaft of the motor and the shaft coupling are further provided with a connecting shaft sleeve and a connecting sleeve, the two ends of the connecting shaft sleeve are respectively connected with the output shaft of the motor and the connecting sleeve, and the connecting sleeve is connected with the shaft coupling.

[0010] Further, the upper end of the eccentric gear shaft is rotatably installed on the stepped position in the eccentric cavity of the eccentric shaft.

[0011] Further, the upper end of the eccentric gear shaft is connected with the first gasket, the third thrust bearing, the second thrust bearing and the wave washer in sequence through the locknut.

[0012] Further, the eccentric shaft is installed on the inner cavity step of the lower end cover through the first thrust bearing.

[0013] Further, the first needle bearing and the third needle bearing are arranged between the eccentric cavity of the eccentric shaft and the eccentric gear shaft, and the second needle bearing and the fourth needle bearing are arranged between the inner cavity of the eccentric shaft and the lower end cover.

[0014] Further, the thrust washer is arranged between the end face of the eccentric shaft and the eccentric gear shaft, and the spherical bearing is arranged on the upper end of the spherical rotary seat and is fixed through the C-shaped buckle, and the inner circle of the spherical bearing is connected with the lower end of the eccentric gear shaft.

[0015] Further, the head is driven by the electric cylinder, and the head is slidably installed on the table, and the electric cylinder is fixed on the table.

[0016] Further, the head is fixed on the support frame, the support frame is connected with the output shaft of the electric cylinder, the support frame is further fixed on the sliding block, the sliding block is slidably arranged on the linear guide rail, and the linear guide rail is fixed on the table, and the workbench and the base are connected through the manual screw rod assembly.

[0017] Compared with the prior art, the device has the beneficial effects that: the head is controlled to move up and down on the two linear guide rails through the electric cylinder, so that the impact force of the head downward riveting is accurately controlled, the stability of the head lifting is improved, the noise of the machine is greatly reduced, and the service life is prolonged. At the same time, the output shaft of the motor drives the coupling to rotate the eccentric shaft, promotes the eccentric gear shaft in the eccentric shaft to rotate eccentrically in the internal gear, further drives the spherical rotary seat to rotate and rotate around the spherical center point, can make the riveting in the small contact area between the upper die and the deformed part of the rivet reach the yield point, make the riveted material move along the radial direction to complete the riveting, greatly reduce the axial impact force, improve the stability and riveting quality of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the utility model;

[0019] Figure 2 It is a lifting motion schematic view of the utility model;

[0020] Figure 3 It is a head sectional view of the utility model;

[0021] Figure 4 is Figure 3 a local enlarged view of;

[0022] Figure 5 is a radial rotation schematic view of the spherical rotation seat of the utility model.

[0023] In the figure: 10. Electric cylinder; 11. Linear guide rail; 12. Slide block; 13. Support frame; 20. Motor; 21. Machine head; 210. Connecting shaft sleeve; 211. Connecting sleeve; 212. Coupling; 213. Anti-loosening screw; 214. Third thrust bearing; 215. Second thrust bearing; 216. Wave washer; 217. First needle bearing; 218. Second needle bearing; 219. First gasket; 220. First thrust bearing; 221. Eccentric shaft; 222. Third needle bearing; 223. Fourth needle bearing; 224. Thrust washer; 225. Eccentric gear shaft; 226. Internal gear; 227. Spherical seat; 228. C-shaped clasp; 229. Spherical bearing; 230. Spherical rotation seat; 22. Lower end cover; 23. Turn head cover; 24. Upper die; 30. Lower die; 31. Workbench; 32. Manual screw rod assembly; 4. Table body; 5. Base. DETAILED DESCRIPTION

[0024] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "fixed", "mounted", "connected", "provided" and the like should be understood broadly, for example, when an element is referred to as "fixed to" another element, it can be directly on another element or there can be a middle element. When an element is considered "mounted on" another element, it can be directly mounted on another element or there can be a middle element. When an element is considered "connected" to another element, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements.

[0026] For ordinary skilled persons in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Embodiment one

[0029] Referring to Figures 1-5 The utility model discloses a servo electric radial riveting machine, including base 5, the base 5 is fixed with the table body 4, the table body 4 is equipped with the liftable motion's machine head 21 and the height -adjustable workbench 31, the machine head 21 is installed with the upper die 24, the workbench 31 is fixed with the lower die 30 that cooperates with the upper die 24, wherein, the machine head 21 is driven through electric cylinder 10, specifically servo electric cylinder 10, the machine head 21 sliding installation is in the table body 4, and the electric cylinder 10 is fixed in the table body 4, specifically, as Figure 1 And Figure 2 It is known that the machine head 21 is fixed on the support frame 13, the support frame 13 is connected with the output shaft of the electric cylinder 10, the support frame 13 is also fixed on the sliding block 12, the sliding block 12 is slidingly arranged on the linear guide rail 11, the linear guide rail 11 is fixed on the table body 4, the linear guide rail 11 is provided with two sliding blocks 12 side by side, and two sliding blocks 12 are arranged on each linear guide rail 11;The workbench 31 and the base 5 are connected through the manual screw rod assembly 32, which plays the role of supporting and height adjustment, the electric cylinder 10 selects servo electric cylinder 10, and the manual screw rod assembly 32 is a conventional component, which will not be described here.

[0030] As Figures 3-4As shown, the upper and lower ends of the head 21 are respectively provided with a motor 20 and a lower end cover 22, the output shaft of the motor 20 is connected with an eccentric shaft 221, the eccentric cavity of the eccentric shaft 221 is movably provided with an eccentric gear shaft 225 of an eccentric gear, the eccentric gear is engaged with an inner gear 226, the lower end of the eccentric gear shaft 225 is rotatably connected with a spherical rotary seat 230, the spherical rotary seat 230 is in surface contact with a spherical seat 227, the spherical seat 227 is located between the inner gear 226 and the spherical rotary seat 230, the spherical seat 227 is provided with a movable hole, the lower end of the eccentric gear shaft 225 penetrates through the movable hole of the spherical seat 227 and is rotatably connected with the spherical rotary seat 230, the eccentric shaft 221 is rotatably arranged in the inner cavity of the lower end cover 22, the inner gear 226 and the spherical seat 227 are arranged in the inner cavity of the lower end cover 22, the lower end cover 22 is connected with a rotary head cover 23, the spherical rotary seat 230 is provided with an upper die 24 penetrating through the rotary head cover 23, that is, the lower part of the rotary head cover 23 is provided with an opening and the upper die 24 can freely move in the opening. The output shaft of the motor 20 drives the eccentric shaft 221 to rotate, the upper end of the eccentric gear shaft 225 is arranged in the eccentric hole of the eccentric shaft 221, the eccentric gear is engaged with the inner gear 226 to rotate, and the lower end of the eccentric gear shaft 225 drives the spherical rotary seat 230 to rotate around the spherical center point of the spherical seat 227 in a plum blossom trajectory, as shown in Figure 5 As shown in the drawings.

[0031] Example two

[0032] As shown in the drawings. Figures 1-5 As shown in the drawings, based on the technical scheme of example one, a servo electric radial riveting machine, for the specific structure design of the head 21, as shown in Figures 3-4 As shown, the output shaft of the motor 20 is connected with the eccentric shaft 221 through a shaft coupling 212, the motor 20 is generally a servo motor 20, further, the output shaft of the motor 20 and the shaft coupling 212 are further provided with a shaft sleeve 210 and a connecting sleeve 211, the two ends of the shaft sleeve 210 are respectively connected with the output shaft of the motor 20 and the connecting sleeve 211, the connecting sleeve 211 is connected with the shaft coupling 212, and one end of the shaft coupling 212 is fixed on the end face of the eccentric shaft 221.

[0033] Further, the upper end of the eccentric gear shaft 225 is rotatably installed on the stepped position in the eccentric cavity of the eccentric shaft 221, the stepped position in the eccentric cavity can support the upper end of the eccentric gear shaft 225 and enable the eccentric gear shaft 225 to rotate in the eccentric cavity. Specifically, the upper end of the eccentric gear shaft 225 is connected with the first gasket 219, the third thrust bearing 214, the second thrust bearing 215 and the wave washer 216 in sequence through the locknut 213, the wave washer 216 is located at the lowermost position and is placed on the stepped position in the eccentric cavity. The wave washer, also known as the wave elastic washer, has a curved and sharp wave shape, so that the washer can provide greater bearing capacity, generate pressure and reduce vibration and noise through the preloaded bearing. In addition, the eccentric shaft 221 is installed on the stepped position in the inner cavity of the lower end cover 22 through the first thrust bearing 220, the stepped position in the inner cavity of the lower end cover 22 can support the upper end of the eccentric shaft 221 and enable the eccentric shaft 221 to rotate in the inner cavity of the lower end cover 22, in order to ensure the smooth rotation of the eccentric gear shaft 225, the first needle bearing 217 and the third needle bearing 222 are arranged between the eccentric cavities of the eccentric gear shaft 225 and the eccentric shaft 221, and the eccentric gear shaft 225 is sleeved in the first needle bearing 217 and the third needle bearing 222; in order to ensure the smooth rotation of the eccentric shaft 221, the second needle bearing 218 and the fourth needle bearing 223 are arranged between the eccentric shaft 221 and the inner cavity of the lower end cover 22, and the eccentric shaft 221 is sleeved in the second needle bearing 218 and the fourth needle bearing 223.

[0034] Embodiment three

[0035] Referring to Figures 1-5 Based on the technical solutions of the above embodiments, a servo electric radial riveting machine is provided, as shown in the accompanying drawings. Figure 4 The end faces of the eccentric shaft 221 and the eccentric gear shaft 225 are provided with thrust washers 224, which can separate the end faces of the two from each other; the upper end of the spherical rotary seat 230 is provided with a spherical bearing 229 and is fixed through a C-shaped buckle 228, the inner circle of the spherical bearing 229 is connected with the lower end of the eccentric gear shaft 225, that is, the lower end of the eccentric gear shaft 225 penetrates through the movable hole of the spherical seat 227 and is connected with the inner circle of the spherical bearing 229, the spherical rotary seat 230 transmits the power of the eccentric gear shaft 225 through the spherical bearing 229, and is limited in position by the spherical seat 227, so that the upper die 24 installed in the spherical rotary seat 230 can make radial rotary motion.

[0036] Working principle: through the electric cylinder 10 control head 21 in two straight line guide 11 make lifting movement, thereby accurate control head 21 downward riveting impact force, improve the stability of head 21 lifting, the noise of machine is greatly reduced, prolong the service life, simultaneously, through the output shaft rotation of control motor 20, make coupling 212 drive eccentric shaft 221 rotation, promote the rotation of eccentric gear shaft 225 in the inner gear 226 in eccentric shaft 221, further make eccentric gear shaft 225 drive spherical rotation seat 230 rotation, refer to Figure 5 It can be known that the spherical rotation seat 230 rotates around the spherical center point of the spherical seat 227 in a plum blossom trajectory, can make the riveting in the small contact area between the upper die 24 and the deformation part of the rivet reach the yield point with small axial force, make the riveted material move along the radial direction to complete the riveting, greatly reduce the axial impact force, improve the stability and riveting quality of the equipment.

[0037] The device of the utility model utilizes the closed-loop control characteristics of servo electric cylinder 10 and servo motor 20, can conveniently realize accurate control of thrust, speed and position, reduce the riveting impact force, reduce noise and prolong service life, and the servo electric cylinder 10 and servo motor 20 are energized only during riveting, can reduce energy consumption, realize energy saving and carbon reduction.

[0038] In the device of the utility model, the assembly and cooperation relationship of each component, each bearing, gasket, wave washer 216, electric cylinder 10 and motor 20 and its control software are prior art or materials, and the skilled person in the art can directly purchase or order according to the required product model and specification.

[0039] The electrical components in the text are connected with the main controller and 220V mains or industrial power supply, and the main controller can be a conventional known device such as a computer that can control.

[0040] The above is only the preferred embodiment of the utility model, and the specific structure and characteristics of the known scheme are not described in detail. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and any skilled person in the art can make equivalent replacement or change according to the technical scheme and utility model concept of the utility model within the technical scope disclosed by the utility model. It should be covered within the protection scope of the utility model.

Claims

1. A servo-electric radial riveting machine, comprising a base (5), a platform (4) fixed on the base (5), a liftable machine head (21) and an adjustable worktable (31) on the platform (4), an upper die (24) mounted on the machine head (21), and a lower die (30) cooperating with the upper die (24) fixed on the worktable (31), characterized in that, The upper and lower ends of the machine head (21) are respectively provided with a motor (20) and a lower end cover (22), the output shaft of the motor (20) is connected with an eccentric shaft (221), the eccentric cavity of the eccentric shaft (221) is movably provided with an eccentric gear shaft (225) of an eccentric gear, the eccentric gear is engaged with an internal gear (226), the lower end of the eccentric gear shaft (225) is rotatably connected with a spherical rotary seat (230), the spherical rotary seat (230) is in surface contact with a spherical seat (227), the eccentric shaft (221) is rotatably arranged in the inner cavity of the lower end cover (22), the internal gear (226) and the spherical seat (227) are arranged in the inner cavity of the lower end cover (22), the lower end cover (22) is connected with a rotating head cover (23), the spherical rotary seat (230) is provided with an upper die (24) penetrating through the rotating head cover (23).

2. A servo motor powered radial riveter according to claim 1 wherein, The output shaft of the motor (20) is connected with the eccentric shaft (221) through a shaft coupling (212).

3. A servo motor powered radial riveter according to claim 2 wherein, The output shaft of the motor (20) and the shaft coupling (212) are further provided with a shaft sleeve (210) and a connecting sleeve (211), the two ends of the shaft sleeve (210) are respectively connected with the output shaft of the motor (20) and the connecting sleeve (211), and the connecting sleeve (211) is connected with the shaft coupling (212).

4. A servo motor powered radial riveter according to claim 1 or 2 wherein, The upper end of the eccentric gear shaft (225) is rotatably arranged on the stepped position in the eccentric cavity of the eccentric shaft (221).

5. A servo motor powered radial riveter according to claim 4 wherein, The upper end of the eccentric gear shaft (225) is sequentially connected with a first gasket (219), a third thrust bearing (214), a second thrust bearing (215) and a wave washer (216) through a locking screw (213).

6. A servo motor powered radial riveter according to claim 5 wherein, The eccentric shaft (221) is arranged on the stepped position in the inner cavity of the lower end cover (22) through a first thrust bearing (220).

7. A servo motor powered radial riveter according to claim 6 wherein, First and third needle bearings (217) and (222) are arranged between the eccentric gear shaft (225) and the eccentric cavity of the eccentric shaft (221), and second and fourth needle bearings (218) and (223) are arranged between the eccentric shaft (221) and the inner cavity of the lower end cover (22).

8. A servo motor powered radial riveter according to claim 1 wherein, A thrust gasket (224) is arranged between the end faces of the eccentric shaft (221) and the eccentric gear shaft (225), a spherical bearing (229) is arranged on the upper end of the spherical rotary seat (230) and is fixed through a C-shaped buckle (228), and the inner circle of the spherical bearing (229) is connected with the lower end of the eccentric gear shaft (225).

9. A servo motor powered radial riveter according to claim 1 wherein, The machine head (21) is driven by an electric cylinder (10), the machine head (21) is slidably arranged on a table body (4), and the electric cylinder (10) is fixed on the table body (4).

10. A servo motor powered radial riveter according to claim 9 wherein, The machine head (21) is fixed on a support frame (13), the support frame (13) is connected with the output shaft of the electric cylinder (10), the support frame (13) is further fixed on a sliding block (12), the sliding block (12) is slidably arranged on a linear guide rail (11), and the linear guide rail (11) is fixed on the table body (4); the workbench (31) and the base (5) are connected through a manual screw rod assembly (32).

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