A special machine for assembling constant velocity drive shafts

Abstract

The present invention relates to a special machine for assembling a constant-speed transmission shaft, comprising a body, an operating port on the front side of the body, an operating table fixedly connected to the middle part of the body, a transmission shaft placement port on the front side of the operating table, a transmission shaft clamping mechanism for fixing the transmission shaft in the transmission shaft placement port on the operating table, a press-fitting seat and a press-fitting mechanism for controlling the press-fitting seat to move up and down on the upper side of the operating table, a clamp transfer seat sliding left and right on the lower side of the press-fitting seat, a ball cage press-fitting head, a visual inspection device, a retaining spring press-fitting mechanism, an oiling head and a dust cover press-fitting head fixedly connected to the clamp transfer seat, a retaining spring conveying mechanism located at the rear side of the retaining spring conveying seat is provided on the operating table, the retaining spring conveying mechanism of the present invention is used to automatically convey the retaining spring to the transmission shaft, and then transfer the retaining spring through the retaining spring press-fitting mechanism, thereby improving the degree of automation, improving precision, and reducing the labor intensity and operation risks of workers.

Description

Technical Field

[0001] The invention relates to the field of transmission shaft assembly, in particular to a special machine for assembling a constant-speed transmission shaft. Background Art

[0002] The drive shaft is a key component in a vehicle's constant velocity transmission system. Its assembly process involves multiple steps: first, inserting the iron washer, then installing the ball cage, ensuring that the cage's inner core wheel aligns with the spline teeth on the drive shaft. The cage is then pressed into place using a press-fit system on a dedicated assembly machine. Next, the circlip is installed in the circlip groove on the upper side of the cage, where the spline is located. Lubrication is then applied, and finally, the rubber gasket and dust cover are placed to complete the assembly process.

[0003] However, most traditional driveshaft assembly machines lack automated conveying and installation capabilities for circlips, requiring frequent manual intervention during the assembly process, increasing labor intensity and error rates. While some machines now offer automated press-fit circlips, manual insertion is still required, preventing the creation of a fully automated circlip assembly line.

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a special machine for assembling a constant velocity transmission shaft, which can automatically convey the retaining ring and automatically and accurately install it into the retaining ring groove of the spline, thereby improving the installation accuracy and significantly reducing the labor intensity and operation risks of workers. Summary of the Invention

[0005] The present invention provides a special machine for assembling a constant velocity transmission shaft that can automatically convey a retaining ring and automatically and accurately install it into a retaining ring groove of a spline, thereby solving the above-mentioned problems existing in the use process of the prior art.

[0006] The technical solution of the present invention is achieved as follows: a special machine for assembling a constant-speed transmission shaft comprises a body, the front side of the body having an operating port, the middle part of the body being fixedly connected to an operating table, the front side of the operating table being provided with a transmission shaft placement port, the operating table being provided with a transmission shaft clamping mechanism for fixing the transmission shaft in the transmission shaft placement port, the upper side of the operating table being provided with a press-fitting seat and a press-fitting mechanism for controlling the press-fitting seat to move up and down, the lower side of the press-fitting seat being provided with a fixture transfer seat for sliding left and right, the fixture transfer seat being fixedly connected with a ball cage press-fitting head, a visual inspection device, a retaining spring press-fitting mechanism, an oiling head and a dust cover press-fitting head, and the operating table being provided with a retaining spring conveying mechanism located at the rear side of the fixture transfer seat.

[0007] By adopting the above technical solution, the drive shaft can be placed in the drive shaft placement port and clamped by the drive shaft clamping mechanism during assembly. The ball cage is then pressed into place by the ball cage pressing head, the retaining spring is transferred by the retaining spring pressing mechanism, oil is injected by the oiling head, and finally the dust cover is pressed onto the dust cover pressing head. The retaining spring conveying mechanism is used to automatically convey the retaining spring to the drive shaft, and then the retaining spring is transferred by the retaining spring pressing mechanism, which improves the degree of automation, improves accuracy, and reduces the labor intensity and operation risks of workers.

[0008] The present invention is further configured as follows: the operating table is provided with a spring material field mechanism inclined toward the spring conveying mechanism, the spring material field mechanism includes a material field seat, a rodless cylinder, a spring stacking frame, a frame base and a feeding push plate, the material field seat is fixed to the operating table, the frame base is fixed on the material field seat, the spring stacking frame is fixed on the frame base, the rodless cylinder is located at the lower side of the frame base and is connected to the feeding push plate, the frame base side is provided with a push plate sliding opening penetrating the push plate sliding opening, the frame base is provided with a spring discharge opening penetrating the push plate sliding opening at the lower side of the spring stacking frame, the feeding push plate movably cooperates with the push plate sliding opening, the feeding push plate is provided with a spring receiving groove on one end of the feeding push plate near the spring conveying mechanism, the spring receiving groove only has a depth just for accommodating one spring, the feeding push plate is provided with magnetic suction ports on both sides of the spring receiving groove, a magnet is placed in the magnetic suction port, and the spring conveying mechanism is used to convey the spring located in the spring receiving groove to the bottom of the spring pressing mechanism

[0009] By adopting the above technical solution, the retaining spring material yard mechanism realizes the automatic supply of retaining springs and ensures that only one retaining spring is pushed at a time, thus avoiding the problem of retaining spring accumulation or misalignment and improving the accuracy and reliability of retaining spring installation.

[0010] The present invention is further configured as follows: the front side of the retaining spring accommodating groove penetrates through one end of the feeding push plate close to the retaining spring conveying mechanism, and the feeding push plate is provided with a through-hole on the lower side of the retaining spring accommodating groove; the retaining spring conveying mechanism includes an assembly auxiliary column, a finger cylinder, an XY axis linear module and a module seat; the module seat is fixed on the operating table; the XY axis linear module is installed on the module seat and is used to control the finger cylinder to move up and down and forward and backward; an auxiliary column splint for clamping the assembly auxiliary column is connected to the finger cylinder; the assembly auxiliary column has a small upper and large lower structure; the upper end of the assembly auxiliary column is used to pass through the through-hole and the retaining spring.

[0011] By adopting the above technical solution and the design of the assembly auxiliary column, the retaining spring can be smoothly guided into the spline retaining spring groove of the transmission shaft, thereby improving the stability and accuracy of the retaining spring installation.

[0012] The present invention is further configured as follows: a positioning cone is integrally formed at the lower end of the assembly auxiliary column, a cone positioning opening is opened at the upper end of the assembly auxiliary column, the retaining spring pressing mechanism includes a retaining spring pressing sleeve, a positioning cone head column and a spring, the positioning cone head column is movably fitted in the retaining spring pressing sleeve, the spring is used to press downward on the positioning cone head column, the cone positioning opening is used for inserting the positioning cone head column, and the retaining spring pressing sleeve is used for allowing the assembly auxiliary column to enter.

[0013] By adopting the above technical solution and the design of the positioning cone and the positioning cone head column, the precise alignment between the assembly auxiliary column and the circlip press sleeve is ensured, thereby improving the accuracy and stability of the circlip installation.

[0014] The present invention is further configured as follows: a guide valve seat is integrally formed in the retaining spring press-fitting sleeve, an oil passage port is provided on the guide valve seat, an oil chamber is provided on the upper side of the guide valve seat, the upper end of the positioning cone head column passes through the guide valve seat and movably fits in the oil chamber, the positioning cone head column includes a sealing surface for cooperating with the guide valve seat to form a seal with the oil passage port, the spring is located in the oil chamber and is pressed on the upper end of the positioning cone head column, a plurality of oil passage holes are provided on the edge of the upper end of the positioning cone head column, and an oil inlet port connected to the oil chamber is provided on the side wall of the retaining spring press-fitting sleeve.

[0015] By adopting the above technical solution and the design of the guide valve seat and the oil port, the automatic supply of lubricating oil is achieved, the surface of the assembly auxiliary column is lubricated, the friction resistance during the installation of the retaining ring is reduced, and the assembly efficiency and quality are improved.

[0016] The present invention is further configured as follows: a plurality of lubricating oil grooves extending along the length direction are provided on the side surface of the assembly auxiliary column, a plurality of inclined oil grooves connected to the lubricating oil grooves are also provided on the side surface of the assembly auxiliary column, a plurality of oil guide grooves leading to the lubricating oil grooves are provided on the outer periphery of the bottom of the conical positioning port near the side surface of the assembly auxiliary column, a plurality of oil inlet grooves are provided on the side wall of the conical positioning port of the assembly auxiliary column, and a spherical segment protrusion is integrally formed on the center of the bottom of the conical positioning port of the assembly auxiliary column.

[0017] By adopting the above technical solution, the opening of the lubricating oil groove, inclined oil groove, oil guide groove and oil inlet groove ensures that the lubricating oil can be evenly distributed on the surface of the assembly auxiliary column, further reducing the friction during the installation of the retaining spring and improving the smoothness of assembly.

[0018] The present invention is further configured as follows: a transmission shaft support platform is provided on the lower side of the operating table, a number of guide rods are fixedly connected between the operating table and the bottom of the machine body, the transmission shaft support platform is movably fitted on the guide rods, and screw rods are threaded on both sides of the transmission shaft support platform, the upper end of the screw rod is rotatably connected to the operating table, the lower end of the screw rod is connected to a worm gear transmission, the worm gear transmission is connected to a power transmission, a double-head distributor and a motor connected to the double-head distributor are provided at the bottom of the machine body, and the double-head distributor is connected to the power transmission.

[0019] By adopting the above technical solution, the transmission shaft support platform can be adjusted up and down according to transmission shafts of different lengths, ensuring the stability of the transmission shaft during the assembly process and strong adaptability.

[0020] The present invention is further configured as follows: the transmission shaft clamping mechanism includes a clamp base body, a clamp locking rod, a lock base, a lock tongue and a locking cylinder; the clamp base body is fixed on the upper side of the transmission shaft placement opening of the operating table; the clamp base body has a transmission shaft clamping opening opening facing forward; the clamp locking rod is located in front of the transmission shaft clamping opening and the left end is hinged to the clamp base body; the lock base is fixed on the operating table on the right side of the clamp base body; the lock tongue is movably fitted on the lock base; the locking cylinder is fixed on the lock base and is used to control the lock tongue to move left and right; the lock tongue is used to press the right end of the clamp locking rod on the clamp base body.

[0021] By adopting the above technical solution, the transmission shaft clamping mechanism ensures that the transmission shaft is firmly clamped during the assembly process, prevents displacement due to vibration or other reasons, and improves assembly accuracy.

[0022] The present invention is further configured as follows: a plurality of guide pillars are fixedly connected to the upper side of the operating table, a mounting plate is fixedly connected to the upper end of the guide pillars, the press-fitting mechanism includes an electric cylinder fixed on the mounting plate, a pressure sensor is connected to the output shaft of the electric cylinder, the lower end of the pressure sensor is hinged to the press-fitting seat, and the press-fitting seat slides up and down on the guide pillars.

[0023] By adopting the above technical solution and the design of the electric cylinder and pressure sensor, precise pressure control is achieved, making it easy to understand whether each component is pressed into place, ensuring the accurate press-fitting of the ball cage and other components, and improving the assembly quality and consistency.

[0024] The present invention is further configured as follows: a slide is fixedly connected to the lower end surface of the press-fitting seat, a slide bar that slides on the slide is provided on the upper side of the clamp transferring seat, a pressure transmission plate is also fixedly connected to the upper end surface of the clamp transferring seat, the pressure transmission plate is attached to the lower end surface of the press-fitting seat, a wavy lubricating oil groove is provided on the pressure transmission plate, and a clamp switching drive mechanism is provided on the press-fitting seat for the clamp transferring seat to move left and right.

[0025] By adopting the above technical solution, the smooth movement of the fixture transfer seat is achieved through the design of the slide and the slide bar. At the same time, the pressure transfer plate is used to transfer the force between the fixture transfer seat and the press-fitting seat to avoid the force acting on the slide and the slide bar. The wavy lubricating oil groove helps to reduce friction and improve the stability and durability of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the structure in which the transmission shaft is placed on the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of the present invention observed from the rear side;

[0029] Figure 3 This is a schematic diagram of the structure of the present invention after removing part of the upper structure of the body;

[0030] Figure 4 This is a schematic diagram of the structure of the present invention observed from the rear side after removing the upper part of the body structure;

[0031] Figure 5 This is a schematic diagram of the structure of the present invention after removing the machine body and the transmission shaft support platform;

[0032] Figure 6 for Figure 5 Schematic diagram of the structure observed from the rear;

[0033] Figure 7 Schematic diagram of the structure of the circlip conveying mechanism and the circlip material yard mechanism in the present invention;

[0034] Figure 8 Schematic diagram of the structure of the clip spring conveying mechanism of the present invention;

[0035] Figure 9 Schematic diagram of the structure of the spring material field mechanism in the present invention;

[0036] Figure 10 This is a schematic structural diagram of the auxiliary column assembly in the present invention;

[0037] Figure 11 This is a schematic structural diagram of the auxiliary column assembly in the present invention;

[0038] Figure 12Schematic diagram of the cross-sectional structure of the assembly auxiliary column in the present invention;

[0039] Figure 13 It is a structural schematic diagram of the clamp transfer seat and the clamp spring press-fitting mechanism in the present invention;

[0040] Figure 14 for Figure 13 Schematic diagram of the local cross-section structure;

[0041] Figure 15 This is a schematic diagram of the transmission shaft structure to be assembled in the present invention;

[0042] Figure 16 for Figure 15 Schematic diagram of the explosion structure.

[0043] In the figure: 10, machine body; 11, operation port; 12, operation table; 121, drive shaft placement port; 13, box door; 14, warning light; 15, display screen; 20, press-fitting seat; 21, slide seat; 30, fixture transfer seat; 31, slide bar; 32, pressure transmission plate; 321, lubricating oil tank; 33, ball cage press-fitting head; 34, visual inspection device; 35, retaining spring press-fitting mechanism; 36, oiling head; 37, dust cover press-fitting head; 40, material yard seat; 41, rodless cylinder; 42. Circlip stacking frame; 43. Frame base; 431. Push plate sliding opening; 432. Circlip discharge opening; 44. Feed push plate; 441. Circlip receiving groove; 442. Through-hole; 443. Magnetic suction opening; 45. Magnet; 50. Assembly auxiliary column; 501. Positioning cone; 502. Cone positioning opening; 503. Lubricating oil groove; 504. Inclined oil groove; 505. Oil guide groove; 506. Oil inlet groove; 507. Spherical segment protrusion; 51. Finger cylinder; 52. Auxiliary Column clamp; 53, XY axis linear module; 54, module seat; 351, retaining spring press sleeve; 352, guide valve seat; 353, oil port; 354, oil chamber; 355, oil inlet; 356, positioning cone head column; 357, sealing surface; 358, oil hole; 359, spring; 61, transmission shaft support platform; 62, guide rod; 63, screw; 64, worm gear transmission; 65, power transmission; 66, double-head distributor; 67, motor; 71, fixture Base body; 711, transmission shaft clamping mouth; 72, fixture locking rod; 73, lock seat; 74, lock tongue; 75, locking cylinder; 76, second finger cylinder; 77, clamping claw; 81, guide column; 82, mounting plate; 83, electric cylinder; 84, pressure sensor; 85, switching drive motor; 87, rack; 90, transmission shaft; 91, iron washer; 92, ball cage; 93, spline; 94, retaining ring groove; 95, positioning cone groove; 96, retaining ring; 97, rubber pad; 98, dust cover. DETAILED DESCRIPTION

[0044] The following is a combination of the embodiments of the present invention Figure 1-16 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] Example:

[0046] like Figures 1 to 14 As shown, the present invention discloses a constant velocity transmission shaft assembly machine, which is used for Figure 15 and Figure 16 The drive shaft 90 shown is transferred. When transferring, the drive shaft 90 needs to first put in the iron washer 91, and then install the ball cage 92, ensuring that the inner core wheel of the ball cage 92 is aligned with the teeth of the spline 93 on the drive shaft and pressed in. Then install the retaining ring 96 to the retaining ring groove 94 on the upper side of the spline 93 on the ball cage 92, and then oil it. Finally, place the rubber washer 97 and press on the dust cover 98, where the upper side of the spline 93 has a positioning cone groove 95.

[0047] In a special machine for assembling a constant-speed transmission shaft of the present invention, it includes a body 10, an operating port 11 on the front side of the body 10, an openable box door 13 on the rear side of the body 10, an operating table 12 fixedly connected to the middle of the body 10, a transmission shaft placement port 121 is opened on the front side of the operating table 12, and a transmission shaft clamping mechanism for fixing the transmission shaft in the transmission shaft placement port 121 is provided on the operating table 12. The transmission shaft clamping mechanism is used to keep the transmission shaft stable during the assembly process. In addition, a press-fitting seat 20 and a press-fitting mechanism for controlling the press-fitting seat 20 to move up and down are provided on the upper side of the operating table 12, and a clamp transfer seat 30 is provided on the lower side of the press-fitting seat 20 for sliding left and right, and a ball cage is fixedly connected to the clamp transfer seat 30 The press-fitting head 33, the visual inspection device 34, the retaining spring press-fitting mechanism 35, the oiling head 36 and the dust cover press-fitting head 37, the fixture transfer seat 30 can be moved left and right according to different operating requirements, so that one of the ball cage press-fitting head 33, the visual inspection device 34, the retaining spring press-fitting mechanism 35, the oiling head 36 and the dust cover press-fitting head 37 can be aligned with the drive shaft as needed. It should be noted that the above ball cage press-fitting head 33, the visual inspection device 34, the oiling head 36 and the dust cover press-fitting head 37 are all existing technologies and have been widely used in existing drive shaft transfer equipment. The functions to be realized by these components are well known to people in this technical field. The present invention simply brings these components together on the fixture transfer seat 30.

[0048] In the present invention, a retaining spring conveying mechanism is provided on the operating table 12 and is located at the rear side of the clamp transfer seat 30 . The retaining spring conveying mechanism is used to convey the retaining spring to the upper side of the transmission shaft.

[0049] Furthermore, a spring material field mechanism is provided on the operating table 12, which is inclined toward the spring conveying mechanism. The spring material field mechanism specifically includes a field seat 40, a rodless cylinder 41, a spring stacking frame 42, a frame base 43 and a feeding push plate 44. The field seat 40 is fixed on the operating table 12, and the frame base 43 is fixed on the field seat 40. The spring stacking frame 42 is fixed on the frame base 43. The spring stacking frame 42 can be used to stack springs in stacks. In addition, the rodless cylinder 41 is specifically a magnetically coupled rodless cylinder 41. The rodless cylinder 41 is located at the lower side of the frame base 43 and is connected to the feeding push plate 44. A push plate sliding port 431 is opened through the side of the frame base 43, and the frame base 43 is opened through the push plate sliding port 43 on the lower side of the spring stacking frame 42. 1, the retaining spring outlet 432 is used for allowing the retaining spring to pass through, wherein the feeding push plate 44 is movably fitted on the push plate sliding port 431, and a retaining spring receiving groove 441 is provided on one end of the feeding push plate 44 close to the retaining spring conveying mechanism. The retaining spring receiving groove 441 has a depth just enough to accommodate one retaining spring, so when the retaining spring receiving groove 441 is correspondingly located below the retaining spring outlet 432, a retaining spring will fall into the retaining spring receiving groove 441, and when the rodless cylinder 41 controls the feeding push plate 44 to move toward the retaining spring conveying mechanism, the retaining spring in the retaining spring receiving groove 441 is pushed out, and because the feeding push plate 44 has sufficient length, when the retaining spring receiving groove 441 is pushed toward the retaining spring conveying mechanism, there is sufficient length behind it to block the bottom of the retaining spring outlet 432. In addition, the feed push plate 44 of the present invention has magnetic suction ports 443 on both sides of the retaining spring receiving groove 441, and magnets 45 are placed in the magnetic suction ports 443. The magnets 45 can be used to magnetically attract the retaining spring, thereby preventing the retaining spring from being thrown out due to the high-speed movement of the feed push plate 44. In addition, the magnetic attraction also prevents interference with subsequent retaining springs when they are carried out by the retaining spring conveying mechanism. In addition, the retaining spring conveying mechanism is used to convey the retaining spring located in the retaining spring receiving groove 441 to the bottom of the retaining spring pressing mechanism 35.

[0050] What needs to be further explained about the retaining spring receiving groove 441 is that the front side of the retaining spring receiving groove 441 penetrates the feeding push plate 44 near one end of the retaining spring conveying mechanism, and the feeding push plate 44 is provided with a through-hole 442 on the lower side of the retaining spring receiving groove 441. The retaining spring conveying mechanism specifically includes an assembly auxiliary column 50, a finger cylinder 51, an XY axis linear module 53 and a module seat 54. The module seat 54 is fixed on the operating table 12. The XY axis linear module 53 is installed on the module seat 54 and is used to control the finger cylinder 51 to move up and down and forward and backward. The XY axis linear module 53 is a prior art and is widely used in various types of automation equipment. Therefore, its structure will not be described in detail here. It is just that the XY axis linear module 53 of this application superimposes two X-axis linear modules. In the direction of the module, it can move forward a farther distance. In addition, the finger cylinder 51 of the retaining spring conveying mechanism is connected with an auxiliary column clamp 52 for clamping the assembly auxiliary column 50, and the assembly auxiliary column 50 is a small upper and large lower structure. The upper end of the assembly auxiliary column 50 is used to pass through the through-opening 442 and the retaining spring. It should also be noted that the initial state of the retaining spring can enter the upper end of the assembly auxiliary column 50, but the retaining spring can only move to the middle of the assembly auxiliary column 50 and cannot go down again when it is not expanded by external force.

[0051] Among them, a positioning cone 501 is integrally formed at the lower end of the assembly auxiliary column 50, and the positioning cone 501 is used to insert into the positioning cone groove 95 on the upper side of the spline 93. In addition, a cone positioning opening 502 is opened at the upper end of the assembly auxiliary column 50, and the cone positioning opening 502 is used to cooperate with the clamping spring press-fitting mechanism 35, wherein the clamping spring press-fitting mechanism 35 is as shown in FIG. Figures 5 to 14 As shown, it specifically includes a retaining spring press-fitting sleeve 351, a positioning cone head column 356 and a spring 359. The positioning cone head column 356 is movably fitted in the retaining spring press-fitting sleeve 351, and the spring 359 is used to press down on the positioning cone head column 356, and the pointed cone positioning port 502 at the upper end of the assembly auxiliary column 50 is used for the insertion of the positioning cone head column 356. In addition, the retaining spring press-fitting sleeve 351 is used for the entry of the assembly auxiliary column 50. When the assembly auxiliary column 50 enters the retaining spring press-fitting sleeve 351, the retaining spring press-fitting sleeve 351 can push the retaining spring to move downward.

[0052] The specific working principle of the present invention is as follows:

[0053] 1. Place the transmission shaft 90 on the transmission shaft placement opening 121 and clamp it with the transmission shaft clamping mechanism;

[0054] 2. The worker then places the iron washer 91 into the transmission shaft. The visual inspection device 34 moves with the fixture transfer seat 30 to the top of the transmission shaft for photo inspection to ensure that the iron washer 91 is correctly placed and all holes are aligned.

[0055] 3. The worker then installs the ball cage 92, ensuring that the inner core wheel of the ball cage 92 is aligned with the spline 93 on the drive shaft. Then the ball cage pressing head 33 on the fixture transfer seat 30 is moved directly above the drive shaft and driven by the pressing mechanism to press the ball cage 92 downward;

[0056] 4. Next, the circlip is automatically installed. First, the feed push plate 44 of the circlip material field mechanism is positioned so that its circlip receiving slot 441 is below the circlip discharge port 432, causing a circlip to fall into the circlip receiving slot 441. The rodless cylinder 41 then controls the feed push plate 44 to push it toward the circlip conveyor mechanism. Since the circlip receiving slot 441 is only deep enough to accommodate one circlip, only one circlip is ejected. The finger cylinder 51, holding the assembly auxiliary column 50, is driven by the XY-axis linear module 53 to the underside of the circlip. The assembly auxiliary column 50 is then driven upward by the XY-axis linear module 53, passing through the opening 442 on the underside of the circlip receiving slot 441 and into the circlip. The rodless cylinder 41 then controls the feed push plate 44 to retract, returning it to its initial position, at which point the circlip falls onto the assembly auxiliary column 50. The XY axis linear module 53 drives it to the top of the transmission shaft, and aligns the positioning cone 501 at the lower end of the assembly auxiliary column 50 with the positioning cone groove 95 on the upper side of the spline 93. At this time, the retaining spring press-fitting mechanism 35 moves to the top of the assembly auxiliary column 50 as the retaining spring press-fitting mechanism 35 moves, and then moves downward as the press-fitting mechanism is driven. The positioning cone head column 356 is inserted into the pointed cone positioning port 502 of the assembly auxiliary column 50, and after the assembly auxiliary column 50 enters a certain distance into the retaining spring press-fitting sleeve 351, the finger cylinder 51 releases the assembly auxiliary column 50 and retreats, and then the retaining spring press-fitting sleeve 351 continues to move downward, thereby pushing the retaining spring on the assembly auxiliary column 50 downward over the gradually enlarging retaining spring. After the auxiliary column 50 is completely inserted into the circlip press sleeve 351, the circlip is pushed downward out of the auxiliary column 50 and enters the circlip groove 94 located on the upper side of the ball cage 92 at the upper end of the spline 93. The circlip press sleeve 351 then moves upward. After moving upward a certain distance, the finger cylinder 51 returns to clamp the auxiliary column 50. The circlip press sleeve 351 and the positioning cone head column 356 then completely move upward out of the auxiliary column 50. The XY-axis linear module 53 drives the auxiliary column 50 back to its initial state.

[0057] 5. The oiling head 36 moves to the top of the transmission shaft to fill the oil. Then, the rubber pad 97 is placed. The visual inspection device 34 comes over to check whether the retaining spring is locked and the rubber pad 97 is placed properly. If there is an abnormality, the alarm light 14 will sound and the display screen 15 will display the specific abnormality information.

[0058] 6. Finally, place the dust cover press head 37 and press the dust cover 98 onto the drive shaft through the dust cover press head 37 to complete the entire assembly process.

[0059] Since the circlip needs to pass over the assembly auxiliary column 50 when it is installed, and in order to facilitate the circlip to pass over the gradually larger assembly auxiliary column 50 more smoothly, the present invention further optimizes the structure of the circlip pressing mechanism 35 and the assembly auxiliary column 50, wherein, Figure 13 and Figure 14 As shown, a guide valve seat 352 is integrally formed in the retaining spring press sleeve 351 of the retaining spring press mechanism 35, and an oil passage port 353 is provided on the retaining spring press sleeve 351. An oil chamber 354 is provided on the upper side of the retaining spring press sleeve 351. The upper end of the positioning cone head column 356 passes through the guide valve seat 352 and is movably fitted in the oil chamber 354. The positioning cone head column 356 includes a sealing member for cooperating with the guide valve seat 352 to form a seal with the oil passage port 353. The spring 359 is located in the oil chamber 354 and is pressed against the upper end of the positioning cone head column 356. A plurality of oil holes 358 are provided on the edge of the upper end of the positioning cone head column 356 to facilitate the passage of lubricating oil. The side wall of the retaining spring press sleeve 351 is provided with an oil inlet 355 connected to the oil chamber 354. The oil inlet 355 can be connected to the oil supply equipment through a hose, and the oil inlet amount is controlled by the solenoid valve. It should also be noted that the lubricating oil entering the oil chamber 354 The lubricating oil and the lubricating oil to be injected by the oiling head 36 are of the same type. Because the structure allows lubricating oil to enter the power shaft when lubricating the assembly auxiliary column 50, the subsequent oiling time of the oiling head 36 can also be reduced. In addition, another embodiment is proposed here: the work of the oiling head 36 can be cancelled, and the pressing of the retaining spring and the injection of lubricating oil can be completed at one time directly through the retaining spring pressing mechanism 35. It is only necessary to let the solenoid valve control the required oil of the drive shaft to enter the oil chamber 354 according to the setting, and then set the time required for all the lubricating oil in the oil chamber 354 to flow out and reach the drive shaft. Then, the lubricating oil can be injected at the same time as the retaining spring pressing sleeve 351 is pressed into the retaining spring. The lubricating oil passes through the oil hole 358, goes downward along the positioning cone head column 356, and then passes through the side of the assembly auxiliary column 50 to the upper side of the spline 93, and then enters the upper side of the drive shaft. After the lubricating oil has completely flowed in, the retaining spring is also installed, and the retaining spring pressing sleeve 351 moves upward again.

[0060] In order to facilitate the oil to better lubricate the side of the assembly auxiliary column 50, as shown in FIG. Figures 10 to 12As shown, the side of the assembly auxiliary column 50 is provided with a plurality of lubricating oil grooves 503 extending along its length direction, and the side of the assembly auxiliary column 50 is also provided with a plurality of inclined oil grooves 504 connected to the lubricating oil grooves 503. When the oil is large, the oil will overflow the inclined oil grooves 504 to lubricate the side of the entire assembly auxiliary column 50, wherein the assembly auxiliary column 50 is provided with a plurality of oil guide grooves 505 leading to the lubricating oil grooves 503 on the outer periphery near the side of the bottom of the conical positioning port 502, and the assembly auxiliary column 50 is provided with a plurality of oil inlet grooves 506 on the side wall of the conical positioning port 502, and the assembly auxiliary column 50 is integrally formed with a spherical portion protrusion 507 at the center of the bottom of the conical positioning port 502.

[0061] After the positioning cone head column 356 is inserted into the pointed cone positioning port 502 of the assembly auxiliary column 50, as the retaining spring press-fitting sleeve 351 continues to move downward, the positioning cone head column 356 compresses the spring 359 and moves upward relative to the retaining spring press-fitting sleeve 351. Therefore, the sealing surface 357 on the positioning cone head column 356 leaves the guide valve seat 352, and the lubricating oil in the oil chamber 354 flows downward through the oil port 353. The oil hole 358 facilitates the outflow of the lubricating oil, and the outflowing lubricating oil flows along with the positioning cone head column 356. It reaches the assembly auxiliary column 50, passes through the oil inlet groove 506 of the assembly auxiliary column 50, enters the conical positioning port 502, and then reaches the lubricating oil groove 503 and the inclined oil groove 504 from the oil guide groove 505 at the bottom of the conical positioning port 502, so as to lubricate the side of the assembly auxiliary column 50, making it easier for the retaining spring to move downward over the gradually larger assembly auxiliary column 50. The spherical protrusion 507 makes it easier for the lubricating oil to gather on the outer periphery of the bottom of the conical positioning port 502 so that it can better enter the oil guide groove 505.

[0062] like Figure 3 and Figure 4As shown, a transmission shaft support platform 61 is provided on the lower side of the operating table 12, and a plurality of guide rods 62 are fixedly connected between the operating table 12 and the bottom of the body 10. The transmission shaft support platform 61 is movably fitted on the guide rods 62. In addition, screw rods 63 are threaded on both sides of the transmission shaft support platform 61. The upper end of the screw rod 63 is rotatably connected to the operating table 12, and a worm gear transmission 64 is connected to the lower end of the screw rod 63. A power transmission device 65 is also connected to the worm gear transmission 64. A double-head distributor 66 and a motor 67 connected to the double-head distributor 66 are provided at the bottom of the body 10. The double-head distributor 66 is connected to the power transmission 65, and the double-head distributor is driven by the motor 67. 66, thereby driving the power transmission devices 65 on both sides thereof, and then driving the worm gear transmission device 64, thereby driving the screw 63 to rotate, thereby enabling the transmission shaft support platform 61 to realize the movement and adjustment of the up and down positions, wherein the double-head distributor 66, the power transmission device 65 and the worm gear transmission device 64 are all existing technologies, which are used to transmit the power of the motor 67 to drive the screw 63 to rotate. Therefore, the internal gears or worm wheels and worm structures of the double-head distributor 66, the power transmission device 65 and the worm gear transmission device 64 will not be described here. The bottom of the transmission shaft is supported by the transmission shaft support platform 61, and the transmission shaft support platform 61 can be moved up and down according to the length of different transmission shafts.

[0063] like Figure 5 As shown, the drive shaft clamping mechanism includes a clamp base 71, a clamp locking rod 72, a lock base 73, a lock tongue 74 and a locking cylinder 75. The clamp base 71 is fixed to the upper side of the drive shaft placement opening 121 of the operating table 12, and a drive shaft clamping opening 711 with an opening facing forward is provided on the clamp base 71. The clamp locking rod 72 is located in front of the drive shaft clamping opening 711 and its left end is hinged to the clamp base 71, while the lock base 73 is fixed to the operating table 1 on the right side of the clamp base 71. 2, a locking tongue 74 is movably engaged with the lock base 73, and a locking cylinder 75 is fixed to the lock base 73 and is used to control the left and right movement of the locking tongue 74. The locking tongue 74 is used to press the right end of the clamp locking rod 72 against the clamp base 71. When the upper end of the transmission shaft is placed into the transmission shaft clamping opening 711 of the clamp base 71, the clamp locking rod 72 is closed, and then the locking cylinder 75 pushes the locking tongue 74 to press the right end of the clamp locking rod 72 against the clamp base 71, thereby completing the locking. In addition, in this embodiment, the operating table 12 is further provided with a second finger cylinder 76 on the lower side of the transmission shaft placement opening 121. The second finger cylinder 76 has a clamping claw 77 for clamping the transmission shaft. When the transmission shaft is placed, the second finger cylinder 76 can clamp the transmission shaft before the transmission shaft clamping mechanism.

[0064] In the present invention, a plurality of guide posts 81 are fixedly connected to the upper side of the operating table 12. A mounting plate 82 is fixedly connected to the upper end of each guide post 81. The press-fitting mechanism includes an electric cylinder 83 fixed to the mounting plate 82. A pressure sensor 84 is connected to the output shaft of the electric cylinder 83. The lower end of the pressure sensor 84 is hingedly connected to the press-fitting seat 20, which slides up and down on the guide posts 81. The electric cylinder 83 drives the press-fitting seat 20 to move up and down, thereby moving the fixture transfer seat 30 up and down. The pressure sensor 84 achieves precise pressure control, making it easier to determine whether each component is press-fitted into place. Because the force increases when the press-fitting position is in place and can no longer be pushed downward, the pressure sensor 84 ensures accurate press-fitting of the ball cage 92 and other components, improving assembly quality and consistency.

[0065] In addition, a slide 21 is fixedly connected to the lower end surface of the press-fitting seat 20, and a slide bar 31 is provided on the upper side of the fixture transfer seat 30 to slide with the slide 21. A pressure transmission plate 32 is also fixedly connected to the upper end surface of the fixture transfer seat 30. The pressure transmission plate 32 is fitted to the lower end surface of the press-fitting seat 20. A wavy lubricating oil groove 503 is provided on the pressure transmission plate 32. Through the design of the slide 21 and the slide bar 31, the smooth movement of the fixture transfer seat 30 is achieved. At the same time, the pressure transmission plate 32 is used to transmit the force between the fixture transfer seat 30 and the press-fitting seat 20 to avoid the force acting on the slide 21 and the slide bar 31. The wavy lubricating oil groove 503 The oil groove 503 helps to reduce friction and improve the stability and durability of the equipment operation. A clamp switching drive mechanism is provided on the press-fitting seat 20 for the clamp transfer seat 30 to move left and right. The clamp switching drive mechanism specifically includes a switching drive motor 85, a gear and a rack 87. The switching drive motor 85 is fixed on the press-fitting seat 20, and the gear (not shown in the figure) is fixedly mounted on the output shaft of the motor 67, and the rack 87 is fixedly connected to the clamp transfer seat 30 and meshes with the gear. The gear is driven to rotate by the motor 67 to drive the rack 87 to move, thereby realizing the automatic control of the clamp transfer seat 30.

[0066] It should also be pointed out that the terms used in the present invention, such as "front", "rear", "vertical", "horizontal", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A machine for assembling a constant velocity transmission shaft, comprising a body having an operating port on the front side and an operating table fixedly connected to the middle of the body, characterized in that: A transmission shaft placement port is provided on the front side of the operating table, and a transmission shaft clamping mechanism for fixing the transmission shaft in the transmission shaft placement port is provided on the operating table. A press-fitting seat and a press-fitting mechanism for controlling the press-fitting seat to move up and down are provided on the upper side of the operating table. A clamp transfer seat is provided on the lower side of the press-fitting seat for sliding left and right. A ball cage press-fitting head, a visual inspection device, a retaining spring press-fitting mechanism, an oiling head and a dust cover press-fitting head are fixedly connected to the clamp transfer seat. A retaining spring conveying mechanism is provided on the operating table at the rear side of the retaining spring conveying mechanism. A retaining spring material field mechanism is provided on the operating table, which is inclined toward the retaining spring conveying mechanism. The retaining spring material field mechanism includes a material field seat, a rodless cylinder, a retaining spring stacking frame, a frame base and a feeding push plate. The material field seat is fixed The lifting mechanism is a bottom end of the lifting mechanism, and the lifting mechanism is a bottom end of the lifting mechanism, and the lifting mechanism is a bottom end of the lifting mechanism. The front side of the retaining spring receiving groove penetrates one end of the feeding push plate close to the retaining spring conveying mechanism, and the feeding push plate is provided with a through-hole on the lower side of the retaining spring receiving groove, and the retaining spring conveying mechanism includes an assembly auxiliary column, a finger cylinder, an XY axis linear module and a module seat, and the module seat is fixed on the operating table, and the XY axis linear module is installed on the module seat and is used to control the finger cylinder to move up and down and forward and backward, and the finger cylinder is connected to an auxiliary column splint for clamping the assembly auxiliary column, and the assembly auxiliary column is a small upper and large lower structure, and the upper end of the assembly auxiliary column is used to pass through the through-hole and the retaining spring, and the lower end of the assembly auxiliary column is integrally formed with a positioning cone, and the upper end of the assembly auxiliary column is provided with a cone positioning hole, and the retaining spring pressing mechanism The cam is provided with a plurality of springs, each of which is provided with a plurality of springs, and the plurality of springs are provided with a plurality of springs, each of which is provided with a plurality of springs.An oil inlet connected to the oil cavity is provided on the side wall of the clamping spring press sleeve.

2. The constant velocity transmission shaft assembly machine according to claim 1, characterized in that: The side surface of the assembly auxiliary column is provided with a plurality of lubricating oil grooves extending along its length direction, and the side surface of the assembly auxiliary column is also provided with a plurality of inclined oil grooves connected to the lubricating oil grooves. The assembly auxiliary column is provided with a plurality of oil guide grooves leading to the lubricating oil grooves on the outer periphery near the side surface of the bottom of the conical positioning port, and the assembly auxiliary column is provided with a plurality of oil inlet grooves on the side wall of the conical positioning port. The assembly auxiliary column is integrally formed with a spherical segment protrusion at the center of the bottom of the conical positioning port.

3. The constant velocity transmission shaft assembly machine according to claim 1, characterized in that: A transmission shaft support platform is provided on the lower side of the operating table, and a number of guide rods are fixedly connected between the operating table and the bottom of the machine body. The transmission shaft support platform is movably fitted on the guide rods, and screw rods are threaded on the left and right sides of the transmission shaft support platform. The upper end of the screw rod is rotatably connected to the operating table, and the lower end of the screw rod is connected to a worm gear transmission, and the worm gear transmission is connected to a power transmission. A double-head distributor and a motor connected to the double-head distributor are provided at the bottom of the machine body, and the double-head distributor is connected to the power transmission.

4. The constant velocity transmission shaft assembly machine according to claim 1, characterized in that: The transmission shaft clamping mechanism includes a clamp base body, a clamp locking rod, a lock base, a lock tongue and a locking cylinder. The clamp base body is fixed on the upper side of the transmission shaft placement port of the operating table. The clamp base body has a transmission shaft clamping port opening facing forward. The clamp locking rod is located in front of the transmission shaft clamping port and its left end is hinged to the clamp base body. The lock base is fixed on the operating table on the right side of the clamp base body. The lock tongue is movably fitted on the lock base. The locking cylinder is fixed on the lock base and is used to control the lock tongue to move left and right. The lock tongue is used to press the right end of the clamp locking rod on the clamp base body.

5. The constant velocity transmission shaft assembly machine according to claim 1, characterized in that: A plurality of guide pillars are fixedly connected to the upper side of the operating table, and a mounting plate is fixedly connected to the upper end of the guide pillars. The press-fitting mechanism includes an electric cylinder fixed on the mounting plate, and a pressure sensor is connected to the output shaft of the electric cylinder. The lower end of the pressure sensor is hinged to the press-fitting seat, and the press-fitting seat slides up and down on the guide pillars.

6. The constant velocity transmission shaft assembly machine according to claim 5, characterized in that: A slide is fixedly connected to the lower end surface of the press-fitting seat, and a slide bar that slides on the slide is provided on the upper side of the clamp transferring seat. A pressure transmission plate is also fixedly connected to the upper end surface of the clamp transferring seat, and the pressure transmission plate is attached to the lower end surface of the press-fitting seat. A wavy lubricating oil groove is provided on the pressure transmission plate, and a clamp switching drive mechanism for the clamp transferring seat to move left and right is provided on the press-fitting seat.

Images