CN109500266B - Spin riveting machine - Google Patents
Spin riveting machine Download PDFInfo
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- CN109500266B CN109500266B CN201811612935.XA CN201811612935A CN109500266B CN 109500266 B CN109500266 B CN 109500266B CN 201811612935 A CN201811612935 A CN 201811612935A CN 109500266 B CN109500266 B CN 109500266B
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- 238000003825 pressing Methods 0.000 claims abstract description 24
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 8
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 description 58
- 238000009434 installation Methods 0.000 description 10
- 239000010705 motor oil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000007787 solid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention provides a spin riveting machine, and belongs to the technical field of machinery. It has solved the not firm enough problem of connection between current oil slinger and the bent axle. The device comprises a frame, mounting blocks and a main shaft box, wherein the mounting blocks and the main shaft box are arranged on the frame, the mounting blocks are provided with mounting holes in a penetrating manner along the vertical direction, a main shaft capable of moving up and down is arranged in the main shaft box, the lower end of the main shaft extends out of the main shaft box, the lower end of the main shaft is connected with a rotary head capable of rotating, the lower end of the rotary head is provided with two positioning blocks, the inner sides of the two positioning blocks are respectively connected with a rotatable pressing wheel, annular convex parts are arranged on the outer peripheral surfaces of the two pressing wheels, the movement tracks of the two annular convex parts coincide when the rotary head rotates, and the inner sides of the two annular convex parts are respectively provided with an extrusion surface inclined towards the outer side direction of the positioning blocks. The riveting device has the advantages of high riveting precision, simplicity in operation, good connection firmness between the crankshaft and the oil thrower after riveting, and the like.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a spin riveting machine.
Background
The crankshaft is the most important component of the engine, and it receives the forces transmitted by the connecting rod and converts them into torque that is output through the crankshaft and drives other accessories on the engine. At present, a crankshaft is formed by two cranks and a crank pin connected between the two cranks, a connecting rod is sleeved on the crank pin, and a connecting rod bearing is arranged between the connecting rod and the crank pin, wherein the two cranks further comprise shaft parts and connecting blocks fixedly connected with the shaft parts, and in order to successfully lubricate the connecting rod, an oil passage is generally formed on one of the shaft parts to facilitate the introduction of engine oil from a crankcase into the crankshaft through the oil passage, the engine oil is introduced into the crank pin through the oil passage, and finally, the engine oil flows out from the outer side of the crank pin to lubricate the connecting rod bearing.
Because some engine oil impurities can be mixed into engine oil in the crankcase after contacting with other parts and lubricating, in order to enable the engine oil to flow into the crankpin cleanly, an oil thrower disc is sleeved on a shaft part of an oil duct of the crankshaft, the oil thrower disc is communicated with the crankpin and the oil duct, when the engine operates, the oil disc continuously rotates along with the crankshaft, the engine oil in the oil duct enters the oil disc, and the engine oil containing the impurities is thrown to the edge of the oil disc through centrifugal force, and meanwhile, the cleaner engine oil can enter the crankpin, for example, the crankshaft oil disc disclosed by application number 201320471927.4. In order to realize the positioning of the oil thrower on the crankshaft, a concave cavity is arranged on the end face of a connecting block connected with a shaft part provided with an oil duct, the oil thrower is pressed into the concave cavity, and then a riveting point is manually processed between the port of the positioning cavity and the oil thrower by a worker so that the crankshaft and the oil thrower are fixed. Because the manual riveting mode is laborious, in order to improve production efficiency, the staff generally only can process 3-5 riveting points, but because the riveting mode is very small in contact area after all, the condition that the oil thrower disc is separated from the crankshaft easily occurs in the subsequent use process, namely the connection between the oil thrower disc and the crankshaft is not firm enough is found.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a spin riveting machine, which aims to solve the technical problem of improving the connection firmness between a crankshaft and an oil thrower.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a spin riveting machine, includes the frame and all sets up installation piece and headstock in the frame, runs through along vertical direction on the installation piece and is provided with the mounting hole, is equipped with the main shaft that can reciprocate in the headstock, its characterized in that, main shaft lower extreme stretch to the headstock outside, and be connected with the rotating head that can rotate at the main shaft lower extreme, the lower extreme of rotating head is equipped with two locating pieces, the inboard of two locating pieces is connected with rotatable pinch roller respectively, all be equipped with annular convex part on the outer peripheral face of two pinch rollers and when the rotating head rotates the motion track of two annular convex parts coincide mutually, the inboard of two annular convex parts all is equipped with the extrusion face to locating piece outside direction slope.
After the oil thrower is sleeved on a shaft part of the crankshaft provided with an oil duct and pressed into a concave positioning cavity on the end face of a connecting block connected with the shaft part, the riveting machine is utilized for riveting so as to fix the oil thrower. Before spin riveting, the crankshaft needs to be machined firstly, an annular groove is machined on the end face of a connecting block connected with a shaft part provided with an oil duct and close to a positioning cavity, a solid structure with a relatively thin wall thickness is formed between the groove wall of one side of the annular groove close to the positioning cavity and the inner wall of the positioning cavity through the arrangement of the annular groove, and the crankshaft is fixed on a mounting block after the machine frame is finished. The shaft part of the crankshaft, which is not provided with an oil duct, is inserted into the mounting hole on the mounting block to position the crankshaft, the end face of the connecting block, which is connected with the shaft part, which is not provided with the oil duct, on the crankshaft is abutted against the upper end face of the mounting block, and then the control main shaft moves downwards to the outer sides of the two pressing wheels along with the rotating head, and the annular convex part is positioned in the annular groove. Then, the rotating head is controlled to rotate, and the rotating head drives the two positioning blocks to rotate, so that the annular convex parts on the outer sides of the two pressing wheels respectively do circular motion along the annular grooves. Because the inner sides of the two annular convex parts are respectively provided with an extrusion surface inclined towards the outer side direction of the positioning block, the extrusion surfaces are propped against the groove wall of one side of the annular groove close to the positioning cavity and apply inward extrusion force to the two annular convex parts to perform spin riveting operation in the process of circular motion of the two annular convex parts, and along with the downward movement of one side of the main shaft and the continuous circular motion of the two annular convex parts, the extrusion force can enable the upper end of a solid structure formed between the groove wall of one side of the annular groove close to the positioning cavity and the inner wall of the positioning cavity to inwards form an annular flanging so as to fix the oil thrower disc and the crankshaft together.
The rotary riveting machine extrudes corresponding structures on the crankshafts through the annular convex parts outside the two pressing wheels respectively in circular motion to automatically form annular flanges, and compared with the prior art that the oil thrower is fixed in a riveting point mode, the rotary riveting machine has the advantages that the contact area between the annular flanges formed by rotary riveting and the oil thrower is larger, so that the connection firmness between the oil thrower and the crankshafts is improved well.
In the spin riveting machine, the lower end of the main shaft is externally fixed with the connecting sleeve, the rotating head comprises a head part and a rod part fixedly connected to the upper end of the head part and having an outer diameter smaller than that of the head part, the upper end of the rod part extends into the connecting sleeve, the upper end of the rod part is axially limited with the connecting sleeve, the upper end of the rod part is sleeved with a bearing, and the outer side surface of the bearing is propped against the inner wall of the connecting sleeve.
The lower end of the main shaft is externally fixed with a coupling sleeve, the upper end of a rod part of the rotating head stretches into the coupling sleeve, and the upper end of the rod part is limited with the axial direction of the coupling sleeve, so that the rotating head can be driven to synchronously move downwards through the coupling sleeve when the main shaft moves downwards; meanwhile, as the upper end of the rod part is sleeved with the bearing, the outer side surface of the bearing abuts against the inner wall of the connecting sleeve, which means that after the main shaft drives the rotating head to move downwards to a proper position, the rotating head can rotate independently relative to the main shaft to rivet in a rotary mode so as to form an annular flanging, and therefore the connection firmness between the oil thrower and the crankshaft is improved.
In the riveting machine, a connecting plate is fixed at the lower end of the connecting sleeve, a rotating motor is fixed on the connecting plate, a driving belt pulley is fixed on an output shaft of the rotating motor, a driven belt pulley is fixed on a rod part of the rotating head, and power is transmitted between the driving belt pulley and the driven belt pulley through a synchronous belt.
The connecting plate is fixed at the lower end of the connecting sleeve, the rotating motor is fixed on the connecting plate, the rotating motor can be driven to synchronously move downwards through the connecting plate when the main shaft drives the rotating head to move downwards, so that the position between the rotating motor and the rotating head can be kept unchanged, then the rotating motor can be controlled to start after the rotating head moves in place, an output shaft of the rotating motor drives the driving belt pulley to rotate and drives the driven belt pulley and the rotating head to rotate through the synchronous belt, and automatic riveting is realized in the rotating process of the rotating head so as to form an annular flanging to improve the connection firmness between the oil thrower and the crankshaft.
In the above riveting machine, two symmetrically distributed sliding grooves are arranged on the lower end face of the head, the two sliding grooves are all arranged on the outer side face of the head, and sliding blocks which are clamped in the sliding grooves inwards from the outer side of the head are arranged at the upper ends of the two positioning blocks.
The two symmetrically distributed sliding grooves are formed in the outer side of the head, the two positioning blocks are connected in the two sliding grooves on the lower end face of the head through the sliding blocks clamped into the sliding grooves from the outer side of the head inwards, so that when the sizes of crankshafts to be riveted soon are different, workers can adjust the positions of the two pressing wheels through the movement of the positioning blocks along the sliding grooves, the two pressing wheels can accurately rivet the corresponding positions on the crankshafts when the rotating head rotates, the connection firmness between the oil thrower disc and the crankshafts is improved, meanwhile, the rivet rotating precision is guaranteed, and the applicability is wider.
In the spin riveting machine, the number of the bearings is two, the rod part is further sleeved with the spacer, the spacer is positioned between the two bearings, the outer thread of the upper end part of the rod part is connected with the anti-drop nut, the outer side of the upper end of the rod part is provided with the annular limiting surface facing the lower end surface of the anti-drop nut, the upper end surface of the bearing positioned above abuts against the lower end surface of the anti-drop nut, and the lower end surface of the bearing positioned below abuts against the annular limiting surface.
The outer threaded connection anticreep nut of pole portion upper end, pole portion upper end outside is equipped with the annular spacing face towards anticreep nut lower terminal surface, and the bearing up end that is located the top leans on with anticreep nut lower terminal surface, and the bearing lower terminal surface that is located the below leans on with annular spacing face, that is to say utilizes anticreep nut and annular spacing face to cooperate and has carried out axial spacing to two bearings on the pole portion to guarantee that the rotating head can rotate smoothly in order to form annular turn-ups to improve the connection fastness between oil slinger and the bent axle.
In the spin riveting machine, a gap is formed between the upper end face of the rod part and the lower end face of the main shaft, an annular blocking shoulder is arranged on the inner side of the lower end of the connecting sleeve, and the lower end face of the bearing positioned below abuts against the annular blocking shoulder.
An annular blocking shoulder is arranged on the inner side of the lower end of the connecting sleeve, and the lower end face of the bearing positioned below abuts against the annular blocking shoulder, so that the rotary head can be prevented from being separated from the connecting sleeve; meanwhile, a gap is reserved between the upper end face of the rod part and the lower end face of the main shaft, when the main shaft moves downwards to contact the connecting blocks of the two pressing wheels and the crankshaft, the rotating head can be floated upwards in a short distance through the gap, so that a certain buffer effect can be formed, the situation that the crankshaft is impacted greatly in contact with the moment is avoided, and the reliability of machining is ensured while the connection firmness of the oil thrower and the crankshaft is improved.
In the spin riveting machine, the spin riveting machine further comprises a press-fitting sleeve with a closed upper end and an open lower end, an annular flange is arranged on the edge of the lower end face of the press-fitting sleeve, the outer diameter of the press-fitting sleeve is smaller than the distance between two opposite sides of the two pressing wheels, a jacking shaft capable of moving up and down is arranged in the main shaft in a penetrating mode, a yielding channel is arranged on the rotating head in a penetrating mode along the vertical direction, and the lower end of the jacking shaft extends out of the lower end of the rotating head from the yielding channel.
After the crankshaft is placed on the mounting block, the press-fit sleeve is sleeved on the shaft part of the crankshaft, which is provided with an oil duct, the annular flange arranged on the edge of the lower end face of the press-fit sleeve is embedded into the corresponding concave cavity on the oil thrower, then the lower end of the top shaft is controlled to move downwards, the lower end of the top shaft is propped against the upper end of the press-fit sleeve to continuously apply downward acting force on the oil thrower, and then the main shaft is controlled to move downwards and the rotating head is controlled to rotate to finish spin riveting. The top shaft is utilized to continuously apply downward acting force to enable the oil thrower to be kept fixed in the spin riveting process, the spin riveting precision is further improved while the production efficiency is improved, the connection firmness between the oil thrower and a crankshaft is guaranteed, and the press-fit sleeve is smaller than the distance between the opposite sides of the two pressing wheels due to the fact that the outer diameter of the press-fit sleeve is smaller than the distance between the opposite sides of the two pressing wheels, and spin riveting work of the two pressing wheels cannot be affected by the press-fit sleeve.
In the spin riveting machine, the frame is further provided with two support plates and tension springs, the support plates are located on two sides of the mounting block, a clamping plate is arranged between the two support plates, one end of the clamping plate is hinged to the upper end face of one support plate, when the clamping plate swings around a hinge point, the clamping plate can approach or be far away from the mounting hole on the mounting block, and the clamping plate always has a trend of swinging towards the direction approaching the mounting hole under the action of the elasticity of the tension springs.
Before placing the bent axle, dial the cardboard to keeping away from the mounting hole direction earlier, then place the bent axle and loosen the cardboard again after the installation piece, the cardboard just swings to the direction that is close to the mounting hole and blocks between two connecting blocks on the bent axle under the elasticity effect of extension spring, alright so can utilize the cardboard to support the bent axle in riveting process soon, avoid carrying out automatic riveting and causing the influence to the structure of bent axle itself to the bent axle because of utilizing this riveting machine soon.
In the spin riveting machine, a slide rail is arranged on the frame, a slide plate capable of sliding along the slide rail towards a direction close to or far away from the rotating head is arranged on the slide rail, the mounting block and the two support plates are fixed on the slide plate, a yielding hole opposite to the mounting hole is formed in the slide plate in a penetrating mode, a limiting block is fixed on the frame, the upper end face of the limiting block is lower than the lower end face of the slide plate, a limiting groove is formed in the outer side of the limiting block, and when the slide plate slides towards the direction close to the rotating head, the shaft part of the crankshaft can be clamped into the limiting groove.
Because the bent axle has certain length, if the below at the rotating head is fixed with the installation piece to the directness, then the condition that the bent axle probably appears when placing the bent axle on the installation piece, consequently set up the slide rail in the frame and set up on the slide rail and can be along the slide rail to be close to or keep away from the gliding slide of rotating head direction, the installation piece is fixed on the slide, just so when needing to place the bent axle can be earlier through the slide along the slide slip in order to make the installation piece keep away from the rotating head, thereby avoid the bent axle to appear interfering with the rotating head when placing on the installation piece, after the bent axle is placed again with the slide to be close to the rotating head direction and slide so that the bent axle is located the below of rotating head and main shaft.
In addition, fixed stopper in the frame sets up the spacing inslot in the stopper outside, set up on the slide simultaneously and just to the hole of stepping down mutually with the mounting hole on the installation piece, after the bent axle was placed on the installation piece like this, the bent axle was not provided with the shaft part lower extreme of oil duct and stretches to outside the slide lower terminal surface through mounting hole and the hole of stepping down, then the bent axle is not provided with the shaft part lower extreme of oil duct and just can block into the spacing inslot when the slide moves to being close to the swivel head direction in order to avoid the slide to slide not put in place to guaranteed that two pinch rollers are just right with the corresponding position on the bent axle in order to guarantee the spin precision.
Compared with the prior art, the rotary riveting machine extrudes corresponding structures on the crankshaft through the annular convex parts outside the two pressing wheels respectively in circular motion to automatically form annular flanging, and the contact area between the annular flanging formed by rotary riveting and the oil thrower is larger, so that the connection firmness between the oil thrower and the crankshaft is well improved. In addition, through locating piece and rotating head sliding connection, the setting of slide and the setting of stopper, guaranteed soon and riveted the precision.
Drawings
Fig. 1 is a schematic diagram of a front view of the spin riveting machine.
Fig. 2 is an enlarged view at a in fig. 1.
Fig. 3 is an enlarged view of the mounting block of fig. 1.
Fig. 4 is a schematic side view of the present riveter at the mounting block.
Fig. 5 is a schematic top view of the present riveter at the mounting block.
FIG. 6 is a schematic view of the press wheel as it is being spin-riveted.
FIG. 7 is a schematic view of the puck after the spin riveting is completed.
In the figure, 1, a rack; 1a, a strip-shaped abdication groove; 2. a spindle box; 3. a mounting block; 3a, mounting holes; 4. a main shaft; 5. a rotating head; 5a, head; 5b, a rod part; 6. a positioning block; 7. a pinch roller; 7a, annular convex part; 7a1, an extrusion surface; 8. a coupling sleeve; 8a, annular shoulder; 9. a bearing; 10. a connecting plate; 11. a rotating electric machine; 12. a driving pulley; 13. a driven pulley; 14. a synchronous belt; 15. a spacer bush; 16. a drop-proof nut; 17. pressing the sleeve; 17a, an annular flange; 18. a top shaft; 19. a support plate; 20. a tension spring; 21. a clamping plate; 22. a slide rail; 23. a slide plate; 24. a limiting block; 24a, limit grooves; 25. a hydraulic cylinder; 26. a cylinder; 27. a set screw; 28. a wheel axle; 29. a crankshaft; 29a, annular groove; 29b, annular flanging; 30. an oil slinger.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, a spin riveting machine comprises a frame 1, a spindle box 2 is arranged on the frame 1, a spindle 4 capable of moving up and down is arranged in the spindle box 2, a hydraulic cylinder 25 is fixed at the upper end of the spindle box 2, an output shaft of the hydraulic cylinder 25 is fixed with the spindle 4, the lower end of the spindle 4 extends out of the spindle box 2, and a rotary head 5 capable of rotating is connected at the lower end of the spindle 4.
As shown in fig. 1 and 2, specifically, the lower end of the main shaft 4 is externally connected with a coupling sleeve 8 through external threads, the rotating head 5 comprises a head 5a and a rod part 5b fixedly connected to the upper end of the head 5a and having an outer diameter smaller than that of the head 5a, the upper end of the rod part 5b stretches into the coupling sleeve 8, the upper end of the rod part 5b is axially limited with the coupling sleeve 8, the upper end of the rod part 5b is sleeved with a bearing 9, and the outer side surface of the bearing 9 abuts against the inner wall of the coupling sleeve 8. The number of the bearings 9 is two, the upper end of the rod part 5b is further sleeved with a spacer 15, the spacer 15 is positioned between the two bearings 9, the outer thread of the upper end part of the rod part 5b is connected with a drop-proof nut 16, the outer side of the upper end of the rod part 5b is provided with an annular limiting surface facing the lower end surface of the drop-proof nut 16, the upper end surface of the bearing 9 positioned above abuts against the lower end surface of the drop-proof nut 16, and the lower end surface of the bearing 9 positioned below abuts against the annular limiting surface. A gap is formed between the upper end face of the rod part 5b and the lower end face of the main shaft 4, an annular blocking shoulder 8a is arranged on the inner side of the lower end of the coupling sleeve 8, and the lower end face of the bearing 9 positioned below abuts against the annular blocking shoulder 8 a.
As shown in fig. 2, the lower end surface of the head 5a is connected with two positioning blocks 6, the two positioning blocks 6 are symmetrically arranged, the inner sides of the two positioning blocks 6 are respectively connected with a rotating pinch roller 7 through a wheel axle 28, annular convex parts 7a are arranged on the outer peripheral surfaces of the two pinch rollers 7, the movement tracks of the two annular convex parts 7a are overlapped when the rotating head 5 rotates, and the inner sides of the two annular convex parts 7a are respectively provided with a pressing surface 7a1 inclining towards the outer side direction of the positioning blocks 6. In this embodiment, two symmetrically distributed sliding grooves are arranged on the lower end surface of the head 5a, the two sliding grooves are all arranged on the outer side surface of the head 5a, and sliding blocks which are clamped into the sliding grooves from the outer side of the head 5a inwards are arranged at the upper ends of the two positioning blocks 6.
As shown in fig. 1 and 2, a connecting plate 10 is fixed to the lower end of the coupling sleeve 8, a rotating electric machine 11 is fixed to the upper end surface of the connecting plate 10, an output shaft of the rotating electric machine 11 extends out of the lower end surface of the connecting plate 10, a driving pulley 12 is fixed to an output shaft of the rotating electric machine 11, a driven pulley 13 is fixed to a rod portion 5b of the rotating head 5, and power is transmitted between the driving pulley 12 and the driven pulley 13 through a timing belt 14.
As shown in fig. 1, 3 and 4, the frame 1 is further provided with a sliding rail 22, the sliding rail 22 is located below the spindle box 2, a sliding plate 23 capable of sliding along the sliding rail 22 towards a direction close to or far away from the rotating head 5 is arranged on the sliding rail 22, a mounting block 3 is fixed on the sliding plate 23, and a mounting hole 3a is formed in the mounting block 3 in a penetrating manner along the vertical direction. A limiting block 24 is fixed on the frame 1, the upper end face of the limiting block 24 is lower than the lower end face of the sliding plate 23, a limiting groove 24a is formed in the outer side of the limiting block 24, a yielding hole opposite to the mounting hole 3a is formed in the sliding plate 23 in a penetrating mode, and a strip yielding groove 1a arranged along the moving direction of the sliding plate 23 is formed in the frame 1 where the sliding rail 22 is located in a penetrating mode.
As shown in fig. 3, 4 and 5, two parallel support plates 19 are fixed on the slide plate 23, the two support plates 19 are located at two sides of the mounting block 3, a clamping plate 21 is arranged between the two support plates 19, one end of the clamping plate 21 is hinged to the upper end surface of one support plate 19, and when the clamping plate 21 swings around the hinge point, the clamping plate can approach or separate from the mounting hole 3a on the mounting block 3. The slide plate 23 is fixedly provided with a positioning screw 27, a tension spring 20 is connected between the other end of the clamping plate 21 and the positioning screw 27, and the clamping plate 21 always has a tendency of swinging towards the direction approaching the mounting hole 3a under the elastic force of the tension spring 20.
As shown in fig. 1, 3 and 4, the spin riveting machine further comprises a press-fitting sleeve 17 with a closed upper end and an open lower end, an annular flange 17a is arranged at the edge of the lower end face of the press-fitting sleeve 17, the outer diameter of the press-fitting sleeve 17 is smaller than the distance between two opposite sides of the two pressing wheels 7, a top shaft 18 capable of moving up and down is arranged in the main shaft 4 in a penetrating manner, an air cylinder 26 is fixed at the upper end of the air cylinder 25, a piston rod of the air cylinder 26 penetrates through the piston rod of the air cylinder 25 and is fixed with the top shaft 18, a yielding channel is arranged on the rotary head 5 in a penetrating manner along the vertical direction, and the lower end of the top shaft 18 extends out of the lower end of the rotary head 5 from the yielding channel.
As shown in fig. 6 and 7, after the oil slinger 30 is fitted over a shaft portion of the crankshaft 29 having an oil passage formed therein and pressed into a positioning chamber recessed in an end face of a connecting block connected to the shaft portion, the oil slinger 30 is fixed by spin riveting using the present spin riveting machine. Before spin riveting, the crankshaft 29 needs to be machined first, the purpose of machining is mainly to machine an annular groove 29a on the end face of a connecting block connected with a shaft part provided with an oil duct and close to a positioning cavity, a solid structure with a relatively thin wall thickness is formed between the groove wall of one side of the annular groove 29a close to the positioning cavity and the inner wall of the positioning cavity through the arrangement of the annular groove 29a, and the crankshaft 29 is fixed on the mounting block 3 after the frame 1 is finished.
When the crankshaft 29 is fixed, the sliding plate 23 is pulled out in a direction away from the rotating head 5, the clamping plate 21 is pulled out in a direction away from the mounting hole 3a, then the shaft part of the crankshaft 29, which is not provided with an oil duct, is placed in the mounting hole 3a to position the crankshaft 29, the end face of a connecting block on the crankshaft 29, which is connected with the shaft part, which is not provided with the oil duct, is abutted against the upper end face of the mounting block 3, then the clamping plate 21 is loosened, and the clamping plate 21 swings in a direction close to the mounting hole 3a under the action of the elasticity of the tension spring 20 and is clamped between the two connecting blocks on the crankshaft 29, so that the crankshaft 29 is positioned, and meanwhile, the clamping plate 21 is used for supporting the crankshaft 29.
As shown in fig. 3 and 4, after the crankshaft 29 is mounted, the slide plate 23 is pushed in a direction approaching the rotary head 5 until the shaft portion of the crankshaft 29, which is not provided with an oil passage, is engaged with the stopper groove 24a on the side of the stopper 24. Then, the worker sleeves the press-fit sleeve 17 on the shaft portion of the crankshaft 29 provided with the oil passage, the annular flange 17a arranged on the edge of the lower end face of the press-fit sleeve 17 is embedded into the corresponding concave cavity on the oil thrower disc 30, and then the worker controls the cylinder 26 to start to drive the top shaft 18 to move downwards, the lower end of the top shaft 18 abuts against the upper end of the press-fit sleeve 17 to continuously apply downward force on the oil thrower disc 30, so that the oil thrower disc 30 can be kept stationary.
As shown in fig. 6, after the top shaft 18 fixes the oil thrower 30 against the press-fit sleeve 17, the worker controls the hydraulic cylinder 25 to be activated to drive the main shaft 4 to move downward, and the rotating head 5 is connected to the lower end of the main shaft 4, so that the rotating head 5 moves downward together with the main shaft 4. When the spindle 4 moves down to the outside of the two pressing wheels 7 and the annular convex parts 7a are positioned in the annular grooves 29a machined on the crankshaft 29, the operator controls the rotary motor 11 to start. The output shaft of the rotary motor 11 drives the driving pulley 12 to synchronously rotate, and power is transmitted to the driven pulley 13 through the synchronous belt 14, so that the driven pulley 13 drives the rotary head 5 to rotate.
As shown in fig. 7, the rotating head 5 drives the two positioning blocks 6 to rotate, so that the annular protrusions 7a outside the two pressing wheels 7 respectively perform circular motion along the annular grooves 29 a. Since the inner sides of the two annular protruding portions 7a are respectively provided with the pressing surface 7a1 inclined towards the outer side of the positioning block 6, the pressing surface 7a1 abuts against the groove wall of the side, close to the positioning cavity, of the annular groove 29a in the process of circular movement of the two annular protruding portions 7a, and inward pressing force is applied to the pressing surface to perform spin riveting, and the pressing force enables the upper end of a relatively thin solid structure formed between the groove wall of the side, close to the positioning cavity, of the annular groove 29a and the inner wall of the positioning cavity to inwards form an annular flange 29b, so that the oil thrower disc 30 and the crankshaft 29 are fixed together.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The spin riveting machine comprises a frame (1) and mounting blocks (3) and a spindle box (2) which are arranged on the frame (1), wherein mounting holes (3 a) are formed in the mounting blocks (3) in a penetrating manner in the vertical direction, and a spindle (4) capable of moving up and down is arranged in the spindle box (2), and the spin riveting machine is characterized in that the lower end of the spindle (4) extends out of the spindle box (2), the lower end of the spindle (4) is connected with a rotatable rotating head (5), two positioning blocks (6) are arranged at the lower end of the rotating head (5), rotatable pinch rollers (7) are respectively connected to the inner sides of the two positioning blocks (6), annular convex portions (7 a) are arranged on the outer peripheral surfaces of the two pinch rollers (7), movement tracks of the two annular convex portions (7 a) are overlapped when the rotating head (5) rotates, and an extrusion surface (7 a 1) inclined towards the outer side direction of the positioning blocks (6) is arranged on the inner sides of the two annular convex portions (7 a); the spin riveting machine further comprises a press fitting sleeve (17) with a closed upper end and an open lower end, an annular flange (17 a) is arranged on the edge of the lower end face of the press fitting sleeve (17), the outer diameter of the press fitting sleeve (17) is smaller than the distance between the opposite side faces of the two pressing wheels (7), a top shaft (18) capable of moving up and down is arranged in the main shaft (4) in a penetrating manner, a yielding channel is arranged on the rotating head (5) in a penetrating manner along the vertical direction, the lower end of the top shaft (18) extends out of the lower end of the rotating head (5) from the yielding channel, two support plates (19) and tension springs (20) are further arranged on the frame (1), the support plates (19) are positioned on two sides of the mounting block (3), a clamping plate (21) is arranged between the two support plates (19), one end of the clamping plate (21) is hinged to the upper end face of one support plate (19), when the clamping plate (21) swings around a hinging point, the clamping plate (21) can be close to or far away from a mounting hole (3 a) on the mounting block (3), the clamping plate (21) always has a trend towards the direction close to the mounting hole (3 a), the direction of swing under the elasticity of the tension springs (20), the lower end of the supporting plate (18) extends to the lower end of the yielding channel to the lower end of the rotating shaft, two support plates (19) and is provided with two support plates (22) and the sliding rail (22) and can be far away from the sliding rail (23) along the sliding direction (23) on the sliding plate (3), the slide plate (23) is penetrated and provided with a yielding hole which is opposite to the mounting hole (3 a), the frame (1) is fixedly provided with a limiting block (24), the upper end surface of the limiting block (24) is lower than the lower end surface of the slide plate (23), the outer side of the limiting block (24) is provided with a limiting groove (24 a), and when the slide plate (23) slides towards the direction close to the rotating head (5), the shaft part of the crankshaft (29) can be clamped into the limiting groove (24 a).
2. The spin riveting machine according to claim 1, wherein the lower end of the spindle (4) is externally fixed with a coupling sleeve (8), the rotating head (5) comprises a head (5 a) and a rod (5 b) fixedly connected to the upper end of the head (5 a) and having an outer diameter smaller than that of the head (5 a), the upper end of the rod (5 b) extends into the coupling sleeve (8) and is axially limited with the coupling sleeve (8), a bearing (9) is sleeved at the upper end of the rod (5 b), and the outer side surface of the bearing (9) abuts against the inner wall of the coupling sleeve (8).
3. The spin riveting machine according to claim 2, wherein the connecting plate (10) is fixed at the lower end of the connecting sleeve (8), the rotating motor (11) is fixed on the connecting plate (10), the driving pulley (12) is fixed on the output shaft of the rotating motor (11), the driven pulley (13) is fixed on the rod portion (5 b) of the rotating head (5), and power is transmitted between the driving pulley (12) and the driven pulley (13) through the synchronous belt (14).
4. The spin riveting machine according to claim 2, wherein the lower end face of the head (5 a) is provided with two symmetrically distributed sliding grooves, the two sliding grooves are formed on the outer side face of the head (5 a), and the upper ends of the two positioning blocks (6) are provided with sliding blocks which are clamped into the sliding grooves from the outer side of the head (5 a) inwards.
5. The spin riveting machine according to claim 2, 3 or 4, wherein the number of the bearings (9) is two, a spacer (15) is sleeved on the rod portion (5 b), the spacer (15) is located between the two bearings (9), the outer thread at the upper end of the rod portion (5 b) is connected with a drop-proof nut (16), an annular limiting surface facing the lower end surface of the drop-proof nut (16) is arranged at the outer side of the upper end of the rod portion (5 b), the upper end surface of the bearing (9) located above abuts against the lower end surface of the drop-proof nut (16), and the lower end surface of the bearing (9) located below abuts against the annular limiting surface.
6. The spin riveting machine according to claim 5, wherein a gap is formed between the upper end surface of the rod portion (5 b) and the lower end surface of the main shaft (4), an annular blocking shoulder (8 a) is arranged on the inner side of the lower end of the connecting sleeve (8), and the lower end surface of the bearing (9) positioned below abuts against the annular blocking shoulder (8 a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612935.XA CN109500266B (en) | 2018-12-27 | 2018-12-27 | Spin riveting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612935.XA CN109500266B (en) | 2018-12-27 | 2018-12-27 | Spin riveting machine |
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| Publication Number | Publication Date |
|---|---|
| CN109500266A CN109500266A (en) | 2019-03-22 |
| CN109500266B true CN109500266B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811612935.XA Active CN109500266B (en) | 2018-12-27 | 2018-12-27 | Spin riveting machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893659B (en) * | 2021-01-13 | 2022-11-15 | 宁波汽车软轴软管有限公司 | Riveting machine for joint assembly of guide pipe joint of inhaul cable |
| CN114247819A (en) * | 2021-12-22 | 2022-03-29 | 重庆歇马机械曲轴有限公司 | Crank oil thrower disc press-fitting and edge riveting tool |
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| KR20050110437A (en) * | 2004-05-19 | 2005-11-23 | (주)디에스엠 | Riveting machine |
| CN201950125U (en) * | 2010-12-16 | 2011-08-31 | 何金魁 | Hydraulic revolving-riveting machine |
| CN201950127U (en) * | 2010-12-21 | 2011-08-31 | 何金魁 | Spin riveting head for hydraulic pressure spin riveting machine |
| CN202270920U (en) * | 2011-10-11 | 2012-06-13 | 隆昌山川精密焊管有限责任公司 | Hydraulic riveter |
| CN202963355U (en) * | 2012-11-02 | 2013-06-05 | 何樱 | Multifunctional hydraulic spin riveting head |
| CN209393865U (en) * | 2018-12-27 | 2019-09-17 | 台州宏鑫曲轴有限公司 | A kind of riveter |
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|---|---|---|---|---|
| KR20050110437A (en) * | 2004-05-19 | 2005-11-23 | (주)디에스엠 | Riveting machine |
| CN201950125U (en) * | 2010-12-16 | 2011-08-31 | 何金魁 | Hydraulic revolving-riveting machine |
| CN201950127U (en) * | 2010-12-21 | 2011-08-31 | 何金魁 | Spin riveting head for hydraulic pressure spin riveting machine |
| CN202270920U (en) * | 2011-10-11 | 2012-06-13 | 隆昌山川精密焊管有限责任公司 | Hydraulic riveter |
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| CN109500266A (en) | 2019-03-22 |
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