CN113477872B - Spin riveting machine - Google Patents
Spin riveting machine Download PDFInfo
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- CN113477872B CN113477872B CN202110923004.7A CN202110923004A CN113477872B CN 113477872 B CN113477872 B CN 113477872B CN 202110923004 A CN202110923004 A CN 202110923004A CN 113477872 B CN113477872 B CN 113477872B
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- rod
- sleeve
- spin
- spinning
- fixed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/12—Riveting machines with tools or tool parts having a movement additional to the feed movement, e.g. spin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/16—Drives for riveting machines; Transmission means therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The application discloses a spin riveting machine which comprises a second mounting frame and a spin riveting machine body; the spin riveting machine body comprises a sleeve, a top cover, a spinning rod, a limiting sliding rod and a driving assembly; the sleeve is a cylindrical structure with openings at the upper end and the lower end, and a positioning chute and a spiral chute are arranged on the inner annular surface of the sleeve; the spinning rod is coaxially arranged inside the sleeve, and the lower end of the spinning rod extends to the lower part of the sleeve; the limiting slide rod is arranged along the radial direction of the sleeve, one end of the limiting slide rod is arranged on the rotary pressure rod, and the other end of the limiting slide rod is connected in the positioning chute and the spiral chute in a sliding manner; the top cover is arranged at the upper end of the sleeve and arranged on the second mounting frame; the driving assembly is arranged on the top cover and is used for driving the spinning rod to move up and down; when the limiting sliding rod slides in the spiral sliding groove, the spinning rod is forced to rotate. The lower pressing and the rotation of the spinning rod can be realized simultaneously only by one driving assembly, so that the structural layout of the spin riveting machine is more compact and ingenious, and the control difficulty is reduced.
Description
Technical Field
The application relates to the technical field of production lines, in particular to a gearbox suspension assembling production line.
Background
Existing gearbox suspensions generally include a base, main springs, a cantilever arm, and an arcuate member between which the main springs and the cantilever arm are disposed. In the assembling process, the rivet is assembled in a corresponding hole position on the tool clamp manually, the base, the spring, the cantilever and the bow-shaped piece are stacked on the tool clamp, and then the tool clamp is conveyed to a spin riveting station to be subjected to spin riveting operation through a spin riveting machine, so that the bow-shaped piece and the base are riveted.
However, the assembly of the existing gearbox suspension mainly has the following defects: 1. the automation degree is low, the demand on labor force is high, and the efficiency of manual operation is low; 2. the assembly error is large easily during manual assembly, and the rejection rate is high; 3. when manual operation is improper or equipment fails, safety accidents are easily caused, and potential safety hazards exist; 4. during the spin riveting operation, because the spinning head will realize both the pushing process and the rotating process, therefore, the existing spin riveting machine needs to be equipped with two sets of power systems so as to realize the pushing and the rotation of the spinning rod at the same time, thereby causing the structure of the spin riveting machine to be not compact enough, the control difficulty to be large, and the operation to be inconvenient.
Disclosure of Invention
An aim at of this application provides a compact structure, and the overall arrangement is ingenious, only needs the driving system that one set of control spin riveting head pushed down to realize simultaneously spinning rod's pushing down and rotation, and the control degree of difficulty is low, and easy and simple to handle spin riveting machine.
In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a spin riveting machine comprises a second mounting frame and a spin riveting machine body; the spin riveting machine body comprises a sleeve, a top cover, a spinning rod, a limiting sliding rod and a driving assembly; the sleeve is of a cylindrical structure with openings at the upper end and the lower end, a positioning chute and a spiral chute are arranged on the inner annular surface of the sleeve, and the central line of the spiral chute is superposed with the axis of the sleeve; the positioning sliding groove is arranged along the axial direction of the sleeve, the lower end of the positioning sliding groove is connected with the upper end of the spiral sliding groove, and the upper end of the positioning sliding groove penetrates through the upper end of the sleeve; the spinning rod is coaxially arranged inside the sleeve, and the lower end of the spinning rod extends to the lower part of the sleeve; the limiting sliding rod is arranged along the radial direction of the sleeve, one end of the limiting sliding rod is arranged on the spiral pressing rod, and the other end of the limiting sliding rod is connected in the positioning sliding groove and the spiral sliding groove in a sliding mode; the top cover is arranged at the upper end of the sleeve, and the top cover is arranged on the second mounting frame; the driving assembly is arranged on the top cover and is used for driving the spinning rod to move up and down; when the limiting sliding rod slides in the spiral sliding groove, the spinning rod is forced to rotate.
Preferably, the spin riveting machine body further comprises an upper retainer, a lower retainer, a fixed shaft and a planetary gear transmission mechanism, wherein the planetary gear transmission mechanism comprises an inner gear ring, a sun gear, a planet carrier and at least three planetary gears; the sun gear is coaxially fixed at the upper end of the rotary compression rod, and the inner gear ring is coaxially sleeved on the periphery of the sun gear; the planet gears are rotatably arranged at the lower end of the planet carrier, the planet gears are arranged between the inner gear ring and the sun gear at equal intervals along the circumferential direction of the sun gear, and the planet gears are respectively meshed with the inner gear ring and the sun gear; the fixed shaft and the spinning rod are coaxially arranged, the lower end of the fixed shaft is fixed at the upper end of the planet carrier, and the upper end of the fixed shaft is connected with the driving assembly; the upper retainer is rotatably arranged on the fixed shaft, and the lower end of the upper retainer is fixed at the upper end of the inner gear ring; the lower retainer is rotatably arranged on the rotary pressing rod, and the upper end of the lower retainer is fixed at the lower end of the inner gear ring; one end of the limiting sliding rod, which is close to the rotary pressing rod, is fixed on the outer annular surface of the inner gear ring; when the limiting slide rod slides in the spiral chute, the limiting slide rod can drive the sun wheel to rotate at an accelerated speed sequentially through the inner gear ring and the planet wheel.
Preferably, the outer annular surface of the inner gear ring is connected with the inner annular surface of the sleeve in a sliding manner; and a first oil storage groove is formed in the outer annular surface of the inner gear ring.
Preferably, the planetary gear transmission mechanism further comprises a first thrust bearing, the first thrust bearing and the spinning rod are coaxially arranged, and the first thrust bearing is fixedly arranged between the planet carrier and the spinning rod.
Preferably, the planet wheel transmission mechanism further comprises a second thrust bearing and a third thrust bearing, the second thrust bearing is coaxially sleeved on the periphery of the fixed shaft, and the second thrust bearing is fixedly arranged between the planet carrier and the upper retainer; the radial protrusion has solid fixed ring on the spinning pole, the coaxial cover of third thrust bearing is located the periphery of spinning pole, just the third thrust bearing is fixed set up in gu fixed ring and go up between the holder.
Preferably, the upper retainer is a hollow shell-shaped structure with an open lower end, a first shaft hole penetrates through the upper retainer along the axial direction of the inner gear ring, and the first shaft hole is rotatably connected to the fixed shaft; the lower retainer is a hollow shell-shaped structure with an open upper end, a second shaft hole penetrates through the lower retainer along the axial direction of the inner gear ring, and the second shaft hole is rotatably connected to the spinning rod; and a closed oil storage chamber is formed among the fixed shaft, the upper retainer, the inner gear ring, the lower retainer and the spinning rod.
Preferably, a second oil storage groove is formed in the inner ring surface of the first shaft hole and/or the second shaft hole.
Preferably, the spin riveting machine body further comprises a protective sleeve with an open structure at the upper end, the protective sleeve is covered on the sleeve, a third shaft hole is formed in the lower end of the protective sleeve in a penetrating mode, and the third shaft hole is rotatably connected to the spin pressing rod.
Preferably, a third oil storage groove is formed in the inner ring surface of the third shaft hole.
Preferably, the spin riveting machine further comprises a second longitudinal guide rail and a second transverse guide rail, the second longitudinal guide rail is arranged along the front-back direction, and the second longitudinal guide rail is arranged on the second mounting frame in a lifting manner; the second transverse guide rail is arranged on the second longitudinal guide rail in a front-back sliding manner; the top cover is arranged on the second transverse guide rail in a left-right sliding mode.
Compared with the prior art, the beneficial effect of this application lies in:
(1) when the driving assembly drives the spinning rod to move from top to bottom, the limiting slide rod is driven to synchronously move downwards; when the limiting slide rod slides in the positioning sliding groove, the sliding direction of the limiting slide rod is consistent with the moving direction of the spinning rod, so that a part of energy can be prevented from being consumed due to the rotation of the spinning rod; when the limiting sliding rod slides into the spiral sliding groove, the limiting sliding rod can force the spinning rod to rotate, so that the spinning rod can be pressed down and rotated simultaneously; therefore, the height of the spin riveting station can be reasonably designed, so that the lower end of the spin pressing rod is in contact with the rivet while the limiting sliding rod slides to the spiral sliding groove from the positioning sliding groove, and the spin riveting operation of the rivet can be realized. The whole process is simple to operate and convenient to use, only one driving assembly is needed, the pressing and the rotation of the spinning rod can be achieved simultaneously, the structural layout of the spin riveting machine is more compact and ingenious, and the difficulty of control is reduced.
(2) Meanwhile, under the action of the planetary gear transmission mechanism, the rotation angle and the rotation speed of the spinning rod in the spinning operation can be effectively improved, so that the spinning effect of the rivet can be improved.
Drawings
Fig. 1 is a perspective view of a gearbox suspension assembly production line provided by the present application.
Fig. 2 is an enlarged view of the tooling fixture of fig. 1.
Fig. 3 is an enlarged view of a portion of fig. 2, showing the positioning plate, the positioning slider, and the clamping member.
Fig. 4 is an exploded view of the rivet loading mechanism of fig. 1.
Fig. 5 is an enlarged view of a portion of fig. 4 at I, showing the stop.
Fig. 6 is an exploded view of the structures of fig. 5.
Fig. 7 is an enlarged view of the loading assembly of fig. 4.
Fig. 8 is an exploded view of the loading assembly of fig. 7.
Fig. 9 is a cross-sectional view of the feeding assembly of fig. 7, illustrating the movement principle of the pushing block.
Fig. 10 is a cross-sectional view of the loading assembly of fig. 7 taken along a-a (of fig. 9).
Fig. 11 is a top view of the loading assembly of fig. 7 moved to the left end of the horizontal moving rail.
Fig. 12 is an exploded view of the riveter of fig. 1.
Fig. 13 is an exploded view of the spin riveter body of fig. 12.
Fig. 14 is an exploded view of a portion of the structure of fig. 13, showing the interior of the upper cage and the lower cage.
Fig. 15 is an exploded view of the planetary gear set of fig. 14.
Fig. 16 is a cross-sectional view of the spin riveter body of fig. 12.
Fig. 17 to 19 are enlarged views of the portions II, III and IV in fig. 16, respectively.
Figure 20 is a cross-sectional view of the riveter body of figure 12 taken along line B-B (of figure 16).
In the figure: 100. a tooling fixture; 101. a support frame; 102. positioning a plate; 1021. a through hole; 103. a clamping member; 1031. positioning pins; 1032. a pressure lever; 1033. rotating the clamping cylinder; 104. a third transverse guide rail; 105. positioning the sliding block; 106. a lifting assembly; 200. a rivet feeding mechanism; 1. a first mounting bracket; 2. a first longitudinal rail; 3. a first transverse guide rail; 4. a feeding assembly; 41. a carriage; 42. a housing shelf; 421. an opening; 422. a first mounting hole; 423. a slide hole; 43. a top rod; 44. a clamping block; 441. positioning holes; 442. a first bevel structure; 443. a conical surface structure; 444. an accommodation hole; 45. a limiting frame; 46. a spring; 47. a pushing block; 471. a second bevel structure; 48. a push rod; 481. a third bevel structure; 49. a first cylinder; 5. a feeding assembly; 51. a vibrating pan; 52. a spiral rising track; 531. a second mounting hole; 54. a stopper; 541. a stop block; 5411. a limiting groove; 542. a second cylinder; 300. a spin riveting machine; 6. a second mounting bracket; 61. a strip hole; 7. a second longitudinal rail; 71. a fixing hole; 8. a second transverse guide rail; 9. a spin riveting machine body; 90. a sleeve; 901. positioning the chute; 902. a spiral chute; 91. a top cover; 92. a spinning rod; 921. a fixing ring; 93. a limiting slide bar; 94. a drive assembly; 95. an upper retainer; 950. a second oil sump; 951. a first shaft hole; 96. a lower retainer; 960. sealing gaskets; 961. a second shaft hole; 97. a fixed shaft; 98. a planetary gear transmission mechanism; 981. an inner gear ring; 9811. a first oil sump; 982. a sun gear; 983. a planet carrier; 984. a planet wheel; 985. a first thrust bearing; 986. a second thrust bearing; 987. a third thrust bearing; 99. a protective sleeve; 991. a third shaft hole; 992. a third oil sump; 400. riveting; 401. a rod portion; 402. a big head end; 500. a limiting slide block; 501. a threaded bore.
Detailed Description
The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, an embodiment of the present application provides a gearbox suspension assembly line, which includes a robot (the robot is not shown in the drawing), a tooling fixture 100, a rivet feeding mechanism 200, and a spin riveting machine 300.
With reference to fig. 2-3, the tooling fixture 100 includes a support frame 101, a positioning plate 102 and a clamping member 103, wherein the positioning plate 102 is disposed on the support frame 101, and a through hole 1021 is formed through the positioning plate 102; the manipulator is used for clamping and positioning the workpiece to the upper end of the positioning plate 102, the clamping piece 103 is used for clamping and fixing the workpiece on the positioning plate 102, and the through holes 1021 correspond to riveting hole positions (riveting hole positions refer to hole positions for inserting rivets 400 on the workpiece) on the workpiece one by one. The work piece in this application is base, main spring, cantilever and bow, during the equipment, through the manipulator with base, main spring, cantilever and bow centre gripping to locating plate 102 on in proper order to it is fixed to press from both sides tight through clamping piece 103, takes place the displacement with restriction base, main spring, cantilever and bow on locating plate 102. The manipulator itself and the control method thereof are all the prior art, and are not described in detail herein.
Referring to fig. 4, the rivet feeding mechanism 200 includes a first mounting frame 1, a first longitudinal rail 2, a first transverse rail 3, a feeding assembly 4, and a feeding assembly 5; the first longitudinal guide rail 2 is arranged on the first mounting frame 1 along the front-back direction, and the first transverse guide rail 3 is arranged on the first longitudinal guide rail 2 in a front-back sliding manner; the feeding assembly 4 is slidably arranged on the first transverse guide rail 3 from left to right, and the feeding assembly 4 is located below the positioning plate 102; when the feeding assembly 4 moves to be aligned with the feeding assembly 5, the feeding assembly 5 can deliver one rivet 400 to the feeding assembly 4; when the feeding assembly 4 moves to a position right below the through hole 1021, the feeding assembly 4 pushes the rivet 400 upward to a position above the through hole 1021. When the rivet 400 is fed, a workpiece is clamped and fixed on the positioning plate 102 through the clamping piece 103; and then the feeding assembly 4 is controlled to slide left and right on the first transverse guide rail 3, and the first transverse guide rail 3 is controlled to slide back and forth on the first longitudinal guide rail 2, so that the position of the feeding assembly 4 can be changed, a rivet 400 on the feeding assembly 5 can be conveyed to the position right below any through hole 1021, so that the rivet 400 can be pushed to the position above any through hole 1021 (namely, in any riveting hole position on a workpiece), and meanwhile, the feeding assembly 4 can support the rivet 400, so that the spin riveting operation can be carried out through the spin riveting machine 300. It should be noted that, both the slidable mounting manner between the first transverse rail 3 and the first longitudinal rail 2 and the slidable mounting manner between the feeding assembly 4 and the first transverse rail 3 are the prior art, for example, the lower ends of the feeding assembly 4 and the first transverse rail 3 may be provided with a limit slider 500 with a threaded hole 501, the limit slider 500 at the lower end of the feeding assembly 4 is slidably connected in the first transverse rail 3, and the limit slider 500 at the lower end of the first transverse rail 3 is slidably connected in the first longitudinal rail 2; and through install the lead screw through the bearing in first longitudinal rail 2 and first transverse guide 3, through the screw-thread fit between lead screw and the screw hole 501, can drive the lead screw through the motor in order to drive spacing slider 500 self-sliding to can realize the horizontal slip of material loading subassembly 4 and the front and back slip of first transverse guide 3.
Referring to fig. 12, the spin riveting machine 300 includes a second mounting frame 6, a second longitudinal rail 7, a second transverse rail 8, and a spin riveting machine body 9, wherein the second longitudinal rail 7 is disposed on the second mounting frame 6 along the front-back direction, and the second transverse rail 8 is slidably disposed on the second longitudinal rail 7 in the front-back direction; the spin riveting machine body 9 is arranged on the second transverse guide rail 8 in a left-right sliding manner, and the spin riveting machine body 9 is positioned right above the workpiece; when the spin riveter body 9 moves right above the through hole 1021, the spin riveter body 9 spins the rivet 400. During the spin riveting operation, through controlling spin riveting machine body 9 and sliding from side to side on second transverse guide rail 8, and through controlling second transverse guide rail 8 and sliding from front to back on second longitudinal rail 7, with the position of change spin riveting machine body 9, make spin riveting machine body 9 can move to arbitrary through-hole 1021 directly over (be the arbitrary hole site of riveting on the work piece directly over), and under the supporting role of material loading subassembly 4, thereby carry out the spinning operation to rivet 400 in the arbitrary hole site of riveting, in order to realize the spin riveting operation. It should be noted that, both the slidable mounting manner between the spin riveting machine body 9 and the second transverse guide rail 8 and the slidable mounting manner between the second transverse guide rail 8 and the second longitudinal guide rail 7 are the prior art, and similarly, the slidable mounting manner can be realized by adopting a screw driving manner.
Referring to fig. 4, in the present embodiment, the feeding assembly 5 includes a vibration plate 51, a spiral ascending rail 52, a horizontal moving rail 53, and a stopper 54; the lower end of the spiral rising track 52 is connected with the inner bottom of the vibration disc 51, the upper end of the spiral rising track 52 is connected with the right end of the horizontal moving track 53, and the rivet 400 positioned in the vibration disc 51 can move to the horizontal moving track 53 along the spiral rising track 52; when the feeding assembly 4 moves to be aligned with the left end of the horizontal moving rail 53, the stopper 54 automatically conveys one rivet 400 located at the leftmost end of the horizontal moving rail 53 to the feeding assembly 4; when the feeding assembly 4 deviates from the left end of the horizontal moving track 53, the stopper 54 can limit the rivet 400 in the horizontal moving track 53 from sliding off. After the vibrating disk 51 is started, the rivets 400 in the vibrating disk 51 gradually move along the spiral ascending track 52 into the horizontal moving track 53, and the rivets 400 are conveyed to the feeding assembly 4 one at a time under the action of the stop member 54. It should be noted that the vibration plate 51 and the spiral ascending rail 52 are prior art, and their working principle is not described in detail herein.
With reference to fig. 5 to 6, in the present embodiment, the stopping element 54 includes two stopping blocks 541, second mounting holes 531 are respectively formed through the front and rear sides of the horizontal moving rail 53, and the two stopping blocks 541 are respectively slidably disposed in the two second mounting holes 531 in the front and rear directions; the width of the two stopper pieces 541 in the left-right direction is smaller than or equal to the interval between the rod portions 401 on the adjacent two rivets 400. When the feeding assembly 4 moves to be aligned with the left end of the horizontal moving track 53, the two stop blocks 541 are controlled to move back, and one rivet 400 at the leftmost end in the horizontal moving track 53 is extruded onto the feeding assembly 4; at this time, the two stop blocks 541 are controlled to move towards each other, so that the two stop blocks 541 abut against the left end of the horizontal moving rail 53 again to prevent the rivet 400 in the horizontal moving rail 53 from moving leftwards continuously. In addition, when the width of the two stop blocks 541 in the left-right direction is less than or equal to the interval between the rod parts 401 of the two adjacent rivets 400, the two stop blocks 541 can move towards each other to a mutually closed position while the leftmost rivet 400 in the horizontal moving track 53 is separated from the horizontal moving track 53; otherwise, the rivet 400 in the horizontal movement rail 53 easily restricts the two stopper 541 from approaching each other.
With reference to fig. 5-6, in the present embodiment, two adjacent ends of the two stop blocks 541 are vertically provided with 1/4 circular limiting grooves 5411, and when the two stop blocks 541 move towards each other, the two limiting grooves 5411 are abutted against the rod portion 401 of the rivet 400 (as shown in fig. 5), so as to limit the rivet 400 in the horizontal moving track 53 from sliding down. On one hand, the limit groove 5411 can increase the contact surface between the stop block 541 and the rod 401 of the rivet 400, so that the blocking effect of the stop block 541 on the rivet 400 is improved; on the other hand, when one of the rivets 400 at the leftmost end of the horizontal moving rail 53 leaves, the limiting groove 5411 can reduce the width of the stopper 541 in the left-right direction, thereby preventing the two stopper 541 from being interfered by the subsequent rivet 400 in the process of approaching each other.
With reference to fig. 5 to 6, in the present embodiment, the stopping element 54 further includes two second air cylinders 542, the two second air cylinders 542 are respectively disposed at front and rear sides of the horizontal moving rail 53, and the two second air cylinders 542 are respectively used for driving the two stopping blocks 541 to slide back and forth. By controlling the extension and retraction of the two second cylinders 542, the two stop blocks 541 can be driven to approach or separate from each other.
Referring to fig. 7-11, in the present embodiment, the feeding assembly 4 includes a sliding frame 41, a containing frame 42, a top rod 43 and two clamping blocks 44; the sliding frame 41 is slidably disposed on the first transverse rail 3 from left to right (i.e. the lower end of the sliding frame 41 is connected to the limit slider 500); the containing frame 42 is arranged on the sliding frame 41, the upper end of the containing frame 42 is of an open structure, the right end of the containing frame 42 is provided with an opening 421, and the front end and the rear end of the containing frame 42 are both provided with a first mounting hole 422 in a penetrating manner; the top rod 43 is slidably disposed in the containing frame 42 up and down, and when the top rod 43 moves to the bottom dead center, the upper end of the top rod 43 is flush with the lower end of the opening 421; the two clamping blocks 44 are respectively slidably disposed in the two first mounting holes 422, and the ends of the two clamping blocks 44 close to each other are vertically penetrated by semicircular positioning holes 441. When the opening 421 moves along with the sliding frame 41 to align with the left end of the horizontal moving track 53, the two clamping blocks 44 move back to back, so that the rivet 400 in the moving track enters the inside of the containing frame 42 through the opening 421; when the opening 421 deviates from the left end of the horizontal moving track 53, the two clamping blocks 44 move towards each other, and the two positioning holes 441 are clamped on the rod 401 of the rivet 400, so that the rivet 400 is limited from falling; when the rod 43 moves with the carriage 41 to a position right below the through hole 1021, the two clamping blocks 44 move back to back, and the rod 43 can eject the rivet 400 upward above the through hole 1021.
With reference to fig. 7-11, in this embodiment, the feeding assembly 4 further includes two limiting frames 45 and at least two springs 46, the two limiting frames 45 are respectively disposed at the front and rear ends of the accommodating frame 42, and each limiting frame 45 is connected to the clamping block 44 through at least one spring 46, so as to force the two clamping blocks 44 to close together (as shown in fig. 10); the two clamping blocks 44 are provided with first inclined surface structures 442 (as shown in fig. 8) at positions corresponding to the openings 421, and a conical surface structure 443 (as shown in fig. 8) is provided between the inner annular surface of the positioning hole 441 and the lower surface of the clamping block 44. As shown in fig. 11, when the rivet 400 enters the interior of the housing shelf 42 through the opening 421, the shank 401 of the rivet 400 acts on the first ramp structure 442, thereby forcing the two holding blocks 44 to move back to back; as shown in FIG. 10, as the rivet 400 moves up with the mandrel 43, the large head end 402 of the rivet 400 acts on the conical surface structure 443, thereby forcing the two holding blocks 44 away from each other; in the whole process, the clamping block 44 moves automatically without human intervention.
Referring to fig. 8, in the present embodiment, the mandrel 43 has a cylindrical structure, and the diameter of the mandrel 43 is greater than or equal to the diameter of the shaft 401 of the rivet 400, so that the rivet 400 can be effectively supported by the mandrel 43. The diameter of the mandrel 43 is less than or equal to the diameter of the larger end 402 of the rivet 400 so that the mandrel 43 can enter the through hole 1021 with the rivet 400. The clamping block 44 is provided with a receiving hole 444 corresponding to the spring 46, on one hand, the receiving hole 444 can position the spring 46 without separately installing and fixing the spring 46; on the other hand, the receiving hole 444 may receive the spring 46, which is advantageous for reducing the size of the retainer 45 in the axial direction of the spring 46.
With reference to fig. 7-9, in the present embodiment, the accommodating frame 42 is provided with a sliding hole 423 extending in the left-right direction, and the sliding hole 423 is located below the opening 421; the feeding assembly 4 further comprises a pushing block 47 and a push rod 48, the pushing block 47 is connected to the inside of the containing frame 42 in a vertical sliding manner, the upper end of the pushing block 47 is arranged at the lower end of the ejector rod 43, and the lower end of the pushing block 47 is provided with a second slope structure 471; the push rod 48 is slidably disposed in the slide hole 423 in the left-right direction, and a third slope structure 481 is disposed at a left end (or a right end) of the push rod 48. As shown in fig. 9, when the third ramp 481 slides with the pushrod 48 to interact with the second ramp 471 (i.e. the pushrod 48 moves to the left), the pusher block 47 can be forced to slide upward; similarly, when the third ramp 481 gradually separates from the second ramp 471 (i.e. the push rod 48 moves to the right), the push block 47 automatically slides downwards under the action of gravity. When the pushing block 47 is driven to slide upwards to the top dead center in this way, the push rod 48 is effectively supported at the lower end of the pushing block 47, so as to prevent the pushing block 47 (i.e., the mandril 43) from sliding downwards during the riveting operation. As shown in fig. 9, the feeding assembly 4 further includes a first cylinder 49, the first cylinder 49 is disposed on the sliding frame 41, and the push rod 48 can be driven to slide left and right by controlling the expansion and contraction of the first cylinder 49.
With reference to fig. 12-20, in the present embodiment, the spin riveting machine body 9 includes a sleeve 90, a top cover 91, a spinning rod 92, a limiting sliding rod 93, and a driving assembly 94; the sleeve 90 is a cylindrical structure with openings at the upper end and the lower end, a positioning chute 901 and a spiral chute 902 are arranged on the inner annular surface of the sleeve 90, and the central line of the spiral chute 902 is superposed with the axis of the sleeve 90; the positioning chute 901 is arranged along the axial direction of the sleeve 90, the lower end of the positioning chute 901 is connected with the upper end of the spiral chute 902, and the upper end of the positioning chute 901 penetrates through the upper end of the sleeve 90; the spinning rod 92 is coaxially arranged inside the sleeve 90, and the lower end of the spinning rod 92 extends to the lower part of the sleeve 90; the limiting sliding rod 93 is arranged along the radial direction of the sleeve 90, one end of the limiting sliding rod 93 is arranged on the rotary pressing rod 92, and the other end of the limiting sliding rod 93 is connected in the positioning sliding groove 901 and the spiral sliding groove 902 in a sliding mode; the top cover 91 is arranged at the upper end of the sleeve 90, and the top cover 91 can be arranged on the second transverse guide rail 8 in a left-right sliding manner (namely, the upper end of the top cover 91 is connected with the limiting slide block 500); the driving assembly 94 is disposed on the top cover 91 and is used for driving the spinning rod 92 to move up and down. When the driving assembly 94 drives the spinning rod 92 to move from top to bottom, the limiting sliding rod 93 firstly slides in the positioning sliding groove 901, at this time, the spinning rod 92 moves along the axial direction (i.e. moves downwards), until the lower end of the spinning rod 92 contacts with the rod part 401 of the rivet 400, the limiting sliding rod 93 slides from the positioning sliding groove 901 to the spiral sliding groove 902, and the limiting sliding rod 93 forces the spinning rod 92 to rotate, so that the spinning rod 92 can be pressed down and rotated at the same time, and the spinning operation of the rivet 400 can be realized.
With reference to fig. 13-16, in this embodiment, the spin riveting machine body 9 further includes an upper holder 95, a lower holder 96, a fixed shaft 97, and a planetary gear 984 transmission mechanism, where the planetary gear 984 transmission mechanism includes an annular gear 981, a sun gear 982, a planet carrier 983, and at least three planetary gears 984; the sun wheel 982 is coaxially fixed at the upper end of the spinning rod 92, and the inner gear ring 981 is coaxially sleeved on the periphery of the sun wheel 982; at least three planet wheels 984 are rotatably arranged at the lower end of the planet carrier 983, the at least three planet wheels 984 are arranged between the annular gear 981 and the sun wheel 982 at equal intervals along the circumferential direction of the sun wheel 982, and the planet wheels 984 are respectively meshed with the annular gear 981 and the sun wheel 982; the fixed shaft 97 is coaxially arranged with the spinning rod 92, the lower end of the fixed shaft 97 is fixed at the upper end of the planet carrier 983, and the upper end of the fixed shaft 97 is connected with the driving assembly 94; the upper retainer 95 is rotatably arranged on the fixed shaft 97, and the lower end of the upper retainer 95 is fixed at the upper end of the ring gear 981; the lower retainer 96 is rotatably arranged on the spinning rod 92, and the upper end of the lower retainer 96 is fixed at the lower end of the inner gear ring 981; one end of the limiting slide rod 93 close to the rotary pressing rod 92 is fixed on the outer annular surface of the inner gear ring 981; when the limit slide rod 93 slides in the spiral chute 902, the sun wheel 982 is driven to rotate at an accelerated speed by the annular gear 981 and the planet wheel 984 in sequence. Under the action of the upper retainer 95 and the lower retainer 96, when the driving assembly 94 drives the fixed shaft 97 to slide from top to bottom, the whole body consisting of the fixed shaft 97, the planetary gear transmission mechanism 98, the limiting slide rod 93 and the spinning rod 92 can slide downwards integrally; when the limiting slide rod 93 slides in the positioning chute 901, the annular gear 981 does not rotate, namely the spinning rod 92 moves downwards; when the limit sliding rod 93 slides in the spiral chute 902, the limit sliding rod 93 forces the inner gear ring 981 to rotate, the inner gear ring 981 drives the sun gear 982 to rotate through the planet gear 984 (as shown in fig. 20), and at the moment, the spinning rod 92 rotates while moving downwards, so that the spinning rod 92 can be pressed and rotated under the action of the single driving component 94; therefore, the heights of all parts can be reasonably designed, so that the lower end of the spinning rod 92 is contacted with the rod part 401 of the rivet 400 while the limiting sliding rod 93 slides downwards to the spiral sliding chute 902, and the spinning rod 92 can spin-rivet the rivet 400; moreover, under the action of the planetary gear transmission mechanism 98, the rotation acceleration of the spinning rod 92 can be realized, so that the spinning rod 92 can rotate by a larger angle in the pressing process, and the spinning effect of the rivet 400 is improved.
Referring to fig. 14-16, in this embodiment, the outer annular surface of the inner ring gear 981 is slidably connected to the inner annular surface of the sleeve 90; a first oil reservoir 9811 is provided on the outer circumferential surface of the ring gear 981. The precision of the up-and-down movement and rotation of the inner gear ring 981 (namely the spinning rod 92) can be improved through the sliding fit between the outer annular surface of the inner gear ring 981 and the inner annular surface of the sleeve 90; meanwhile, under the action of the first oil reservoir 9811, an appropriate amount of lubricating oil can be stored so that the sliding resistance between the outer annular surface of the ring gear 981 and the inner annular surface of the sleeve 90 can be reduced and the heat dissipation therebetween can be improved. The first oil reservoir 9811 is preferably of a wave-like configuration (as shown in fig. 15) to store more lubricant while increasing the lubrication area between the outer annular surface of the ring gear 981 and the inner annular surface of the sleeve 90.
With reference to fig. 15-17, in the present embodiment, the planetary gear 984 transmission mechanism further includes a first thrust bearing 985, the first thrust bearing 985 is coaxially disposed with the spinning rod 92, and the first thrust bearing 985 is fixedly disposed between the planetary carrier 983 and the spinning rod 92. As shown in fig. 17, the first thrust bearing 985 may support between the planet carrier 983 and the spinning rod 92, so as to transmit the pressure of the planet carrier 983 to the spinning rod 92 without affecting the rotation of the spinning rod 92.
With reference to fig. 15-18, in this embodiment, the planetary gear 984 transmission mechanism further includes a second thrust bearing 986 and a third thrust bearing 987, the second thrust bearing 986 is coaxially sleeved on the outer periphery of the fixed shaft 97, and the second thrust bearing 986 is fixedly disposed between the planet carrier 983 and the upper retainer 95 (as shown in fig. 17); the transmission of the pulling force of the fixed shaft 97 to the upper holder 95 (i.e., the ring gear 981) is achieved by the second thrust bearing 986. A fixing ring 921 radially protrudes from the rotation rod 92, a third thrust bearing 987 is coaxially sleeved on the periphery of the rotation rod 92, and the third thrust bearing 987 is fixedly arranged between the fixing ring 921 and the upper retainer 95 (as shown in fig. 18); the pressure transmission between the rotation rod 92 and the lower holder 96 (i.e., the ring gear 981) is achieved by the third thrust bearing 987.
With reference to fig. 13 to 14, in the present embodiment, the upper holder 95 is a hollow shell-shaped structure with an open lower end, the upper holder 95 has a first shaft hole 951 penetrating along the axial direction of the inner gear ring 981, and the first shaft hole 951 is rotatably connected to the fixed shaft 97; the lower retainer 96 is a hollow shell-shaped structure with an open upper end, a second shaft hole 961 penetrates through the lower retainer 96 along the axial direction of the annular gear 981, and the second shaft hole 961 is rotatably connected to the spinning rod 92; a sealed oil storage chamber is formed among the fixed shaft 97, the upper retainer 95, the ring gear 981, the lower retainer 96 and the spinning rod 92. Proper amount of lubricating oil is stored in the oil storage cavity, so that the lubricating and heat dissipating effects are achieved. As shown in fig. 14, sealing gaskets 960 may be additionally disposed between the upper holder 95 and the ring gear 981 and between the lower holder 96 and the ring gear 981 to improve the sealing performance therebetween.
Referring to fig. 17 to 18, in the present embodiment, a second oil reservoir 950 is disposed on an inner circumferential surface of the first shaft hole 951 and/or the second shaft hole 961. Under the action of the second oil storage groove 950, lubricity and heat dissipation between the fixed shaft 97 and the first shaft hole 951 and between the spinning rod 92 and the second shaft hole 961 can be improved; on the other hand, oil sealing between the fixed shaft 97 and the first shaft hole 951 and between the rotation pressing rod 92 and the second shaft hole 961 can be realized, so that the sealing performance of the oil storage chamber is improved. The second oil storage groove 950 is preferably a spiral structure, and the lower end of the second oil storage groove 950 having a spiral structure in the first shaft hole 951 and the upper end of the second oil storage groove 950 having a spiral structure in the second shaft hole 961 are both communicated with the oil storage chamber, so that the lubricating oil in the oil storage chamber can be shaken during the spin riveting operation, and the lubricating oil in the oil storage chamber can enter the second oil storage groove 950, so as to supplement the lubricating oil to the second oil storage groove 950 in time.
Referring to fig. 13, 16 and 19, in this embodiment, the spin riveting machine body 9 further includes a protective sleeve 99 with an open upper end, the protective sleeve 99 is covered on the sleeve 90, a third shaft hole 991 is formed at the lower end of the protective sleeve 99, and the third shaft hole 991 is rotatably connected to the spin pressing rod 92. The components inside the sleeve 90 are protected by the top cover 91 and the protective sleeve 99 to prevent foreign matter from entering, thereby affecting the spin-riveting operation. Meanwhile, under the action of the third shaft hole 991, interference caused by vertical sliding and autorotation of the rotation lever 92 can be avoided. As shown in fig. 19, a third oil reservoir 992 is provided on an inner circumferential surface of the third shaft hole 991, and lubricating oil is stored in the third oil reservoir 992 to improve lubricity and heat dissipation between the spinning lever 92 and the third shaft hole 991. The third oil sump 992 is preferably of a spiral structure in order to improve a lubricating effect.
With reference to fig. 2-3, in this embodiment, the tooling fixture 100 further includes a third transverse rail 104, a positioning slider 105, and a lifting assembly 106, a lower end of the lifting assembly 106 is disposed on the supporting frame 101, and an upper end of the lifting assembly 106 is disposed on the third transverse rail 104; the positioning slide 105 is arranged on the third transverse guide rail 104 in a left-right sliding manner, and the positioning plate 102 is detachably arranged on the positioning slide 105; the clamping member 103 includes a positioning pin 1031, a pressing lever 1032, and a rotation clamping cylinder 1033; positioning pins 1031 are disposed on the upper surface of the positioning plate 102, and the positioning pins 1031 are used for positioning the workpiece on the upper surface of the positioning plate 102; the rotary clamping cylinder 1033 is disposed on the positioning slider 105, and the rotary clamping cylinder 1033 is used for controlling the pressing rod 1032 to press the workpiece against the upper surface of the positioning plate 102. When the workpiece is clamped and positioned, the positioning slider 105 can be controlled to drive the positioning plate 102 to slide to the outer side of the spin riveting machine 300 along the third transverse guide rail 104, so as to avoid interference of the feeding operation of the manipulator on the spin riveting machine 300 and the rivet feeding mechanism 200; when the manipulator places a workpiece on the positioning plate 102, the workpiece can be preliminarily positioned by the positioning pin 1031, the press rod 1032 is controlled to rotate to the position right above the workpiece by the rotary clamping cylinder 1033, and then the workpiece is pressed tightly on the workpiece, so that clamping and fixing between the workpiece and the positioning plate 102 are realized, and the workpiece on the positioning plate 102 is prevented from falling off or displacing when the positioning plate 102 moves and is in spin riveting operation; meanwhile, the height of the third transverse guide rail 104 can be adjusted through the lifting assembly 106, that is, the height of the positioning plate 102 and the workpiece thereon can be changed, so that the positioning plates 102 of different models can be used in cooperation with the spin riveting machine 300 and the rivet feeding mechanism 200. As shown in fig. 3, the positioning plate 102 is detachably disposed on the positioning slider 105, so that different types of positioning plates 102 can be replaced. In the present application, the detachable manner between the positioning plate 102 and the positioning slider 105 is not limited, and for example, a detachable connection manner such as a screw connection or a snap connection may be adopted. In addition, the slidable mounting manner between the positioning slider 105 and the third transverse rail 104 is the prior art, for example, a lead screw is mounted in the third transverse rail 104 through a bearing, an internal threaded hole for screwing the lead screw is provided on the positioning slider 105, and the lead screw is driven to rotate by a motor, so that the positioning slider 105 can slide left and right on the third transverse rail 104.
Referring to fig. 12, in this embodiment, the first longitudinal rail 2 is disposed on the first mounting frame 1 in a liftable manner, so that the height of the feeding assembly 4 can be adjusted by adjusting the height of the first longitudinal rail 2, so as to adapt to different feeding conditions of the rivet 400. Similarly, second longitudinal rail 7 sets up on second mounting bracket 6 with liftable, can realize the altitude mixture control to spin riveter body 9 through the height of adjusting second longitudinal rail 7 to adapt to the different spin riveting operating mode. It should be noted that, the lifting installation mode between the first longitudinal rail 2 and the first mounting bracket 1 and the lifting installation mode between the second longitudinal rail 7 and the second mounting bracket 6 are both the prior art, for example, the lifting operation of the first longitudinal rail 2 can be automatically realized by a hydraulic cylinder or an air cylinder; for example, the second mounting bracket 6 may be provided with the elongated hole 61, the second longitudinal rail 7 may be provided with the fixing hole 71, and the fixing hole 71 may be fixed to the elongated hole 61 at different positions by bolts, so that the height of the second longitudinal rail 7 may be manually adjusted.
It should be noted that the lifting assembly 106 and the driving assembly 94 are prior art in nature, and may be, for example, a pneumatic or hydraulic cylinder or other mechanism that can effect the up-and-down motion.
The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.
Claims (10)
1. A spin riveting machine is characterized by comprising a second mounting frame and a spin riveting machine body; the spin riveting machine body comprises a sleeve, a top cover, a spinning rod, a limiting sliding rod and a driving assembly; the sleeve is of a cylindrical structure with openings at the upper end and the lower end, a positioning chute and a spiral chute are arranged on the inner annular surface of the sleeve, and the central line of the spiral chute is superposed with the axis of the sleeve; the positioning sliding groove is arranged along the axial direction of the sleeve, the lower end of the positioning sliding groove is connected with the upper end of the spiral sliding groove, and the upper end of the positioning sliding groove penetrates through the upper end of the sleeve; the spinning rod is coaxially arranged inside the sleeve, and the lower end of the spinning rod extends to the lower part of the sleeve; the limiting sliding rod is arranged along the radial direction of the sleeve, one end of the limiting sliding rod is arranged on the spiral pressing rod, and the other end of the limiting sliding rod is connected in the positioning sliding groove and the spiral sliding groove in a sliding mode; the top cover is arranged at the upper end of the sleeve, and the top cover is arranged on the second mounting frame; the driving assembly is arranged on the top cover and is used for driving the spinning rod to move up and down; when the limiting sliding rod slides in the spiral sliding groove, the spinning rod is forced to rotate.
2. The spin riveter of claim 1, wherein the spin riveter body further comprises an upper cage, a lower cage, a stationary shaft, and a planetary gear drive comprising an annulus gear, a sun gear, a planet carrier, and at least three planet gears; the sun gear is coaxially fixed at the upper end of the rotary compression rod, and the inner gear ring is coaxially sleeved on the periphery of the sun gear; the planet gears are rotatably arranged at the lower end of the planet carrier, the planet gears are arranged between the inner gear ring and the sun gear at equal intervals along the circumferential direction of the sun gear, and the planet gears are respectively meshed with the inner gear ring and the sun gear; the fixed shaft and the spinning rod are coaxially arranged, the lower end of the fixed shaft is fixed at the upper end of the planet carrier, and the upper end of the fixed shaft is connected with the driving assembly; the upper retainer is rotatably arranged on the fixed shaft, and the lower end of the upper retainer is fixed at the upper end of the inner gear ring; the lower retainer is rotatably arranged on the rotary pressing rod, and the upper end of the lower retainer is fixed at the lower end of the inner gear ring; one end of the limiting sliding rod, which is close to the rotary pressing rod, is fixed on the outer annular surface of the inner gear ring; when the limiting slide rod slides in the spiral chute, the limiting slide rod can drive the sun wheel to rotate at an accelerated speed sequentially through the inner gear ring and the planet wheel.
3. The spin rivet machine of claim 2, wherein the outer annular surface of the inner annular ring is slidably connected to the inner annular surface of the sleeve; and a first oil storage groove is formed in the outer annular surface of the inner gear ring.
4. The spin riveter of claim 2, wherein the planetary drive mechanism further comprises a first thrust bearing, the first thrust bearing being coaxially arranged with the spin beam and being fixedly disposed between the planet carrier and the spin beam.
5. The spin riveting machine according to claim 2, wherein the planetary gear transmission mechanism further comprises a second thrust bearing and a third thrust bearing, the second thrust bearing is coaxially sleeved on the periphery of the fixed shaft, and the second thrust bearing is fixedly arranged between the planet carrier and the upper retainer; the radial direction protrusion has solid fixed ring on the spinning pole, the coaxial cover of third thrust bearing is located the periphery of spinning pole, just third thrust bearing is fixed set up in gu fixed ring and between the top retainer.
6. The spin riveting machine according to claim 5, wherein the upper holder is a hollow shell-shaped structure with an open lower end, a first shaft hole penetrates through the upper holder along the axial direction of the inner gear ring, and the first shaft hole is rotatably connected to the fixed shaft; the lower retainer is a hollow shell-shaped structure with an open upper end, a second shaft hole penetrates through the lower retainer along the axial direction of the inner gear ring, and the second shaft hole is rotatably connected to the spinning rod; and a closed oil storage chamber is formed among the fixed shaft, the upper retainer, the inner gear ring, the lower retainer and the spinning rod.
7. The spin rivet machine of claim 6, wherein a second oil reservoir is provided on the inner annular surface of the first shaft hole and/or the second shaft hole.
8. The spin riveter of claim 2, wherein the spin riveter body further comprises a protective sleeve having an open top, the protective sleeve is covered on the sleeve, a third shaft hole is formed through the lower end of the protective sleeve, and the third shaft hole is rotatably connected to the spin rod.
9. The spin rivet machine of claim 8, wherein a third oil sump is provided on the inner annular surface of the third shaft hole.
10. The spin riveter of any one of claims 1-9, wherein the spin riveter further comprises a second longitudinal rail and a second transverse rail; the second longitudinal guide rail is arranged along the front-back direction and is arranged on the second mounting rack in a lifting manner; the second transverse guide rail is arranged on the second longitudinal guide rail in a front-back sliding manner; the top cover is arranged on the second transverse guide rail in a left-right sliding mode.
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CN116197339B (en) * | 2023-02-27 | 2023-07-25 | 宣城东海汽车转向部件有限公司 | Sealing cover pressing and riveting device for automobile steering transmission shaft oil seal |
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