CN-121670350-B - Assembling device for worm assembly

Abstract

The invention provides an assembly device of a worm assembly, which comprises a riveting module, a cleaning oiling module, a press-fitting module, a snap ring feeding module and a conveying module, wherein the riveting module is used for riveting auxiliary parts on a fixed worm of a curled ring, the cleaning oiling module is arranged between the riveting module and the press-fitting module and is used for cleaning the worm assembly and oiling the worm, the press-fitting module is used for press-fitting the worm and the snap ring and comprises a gear shifting mechanism, the gear shifting mechanism can shift the rotation of the worm in the worm press-fitting process, the snap ring feeding module is arranged on one side of the press-fitting module and is used for feeding the snap ring to the press-fitting module, and the conveying module is used for conveying materials among the modules. According to the invention, the automatic assembly of the worm assembly is realized through procedures such as riveting, cleaning oiling, press fitting and the like, the automation degree is high, the situations such as staggered teeth, top teeth and the like can be automatically corrected in the process of press fitting the worm, the collision damage of the worm and the worm gear tooth part in the press fitting is avoided, and the assembly efficiency and the assembly quality are improved.

Inventors

• BIAN QINGLAN
• WANG JIE
• ZHANG GUIHAI

Assignees

• 吴江市金澜机械制造有限公司

Dates

Publication Date

20260505

Application Date

20260210

Claims (15)

1. 1. The assembly device of the worm assembly is characterized by comprising a workbench, a riveting module, a cleaning oiling module, a press-mounting module and a clamp ring feeding module, wherein the riveting module is arranged on the workbench, the riveting module is used for riveting auxiliary parts on a fixed worm of a crimping ring, the cleaning oiling module is arranged between the riveting module and the press-mounting module and is used for cleaning the worm assembly and oiling the worm, the press-mounting module is used for press-mounting the worm and the clamp ring and comprises a positioning mechanism, an upward pressing mechanism and a tooth shifting mechanism, the positioning mechanism is used for positioning and fixing a workpiece, the upward pressing mechanism is arranged above the positioning mechanism and is used for connecting the worm to a worm wheel in a workpiece shell in a press-mounting manner, the tooth shifting mechanism is arranged below the positioning mechanism and can shift the rotation of the worm wheel in the press-mounting process of the worm, and the clamp ring feeding module is arranged on one side of the press-mounting module and is used for feeding the clamp ring to the press-mounting module; The conveying module is used for conveying materials among the riveting module, the cleaning oiling module and the press mounting module; The riveting module comprises a press mounting seat, a press mounting mechanism, a lifting mechanism, a guide mechanism, a riveting tool and a lifting mechanism, wherein the press mounting mechanism is arranged at the upper end of the press mounting seat, the riveting tool is arranged at the bottom of the press mounting seat, the press mounting mechanism and the riveting tool are matched for press mounting of a riveting crimping ring, the lifting mechanism is arranged between the press mounting mechanism and the riveting tool and is used for lifting and fixing a worm assembly and limiting the position of the crimping ring on the worm, the lifting mechanism is arranged on the press mounting seat, the output end of the lifting mechanism is connected with the lifting mechanism and the guide mechanism, the lifting mechanism and the guide mechanism can be driven to synchronously move to guide and convey the worm assembly to the riveting tool, and the guide mechanism is arranged below the riveting tool and is propped against the bottom of the worm assembly for guide press mounting during press mounting; The press mounting module further comprises a lower jacking mechanism, the lower jacking mechanism is arranged below the positioning mechanism, the lower jacking mechanism can jack and is arranged at the bottom of the worm to be matched and press-mounted when the worm is press-mounted by the upper pressing mechanism, the lower jacking mechanism comprises a lower jacking support, a lower ejector rod and a driving assembly for driving the lower ejector rod to axially move along a worm shaft hole, the driving assembly is arranged on the lower jacking support and comprises a screw rod, a lower jacking motor and a lower jacking movable seat, the lower jacking motor is arranged at the bottom of the lower jacking support, the output end of the lower jacking motor is connected with the screw rod, the screw rod is arranged on the lower jacking support and is rotationally connected with the lower jacking support, the lower jacking movable seat is connected with a screw rod nut on the screw rod through a lower jacking connecting plate, one side of the lower jacking support is provided with a sliding rail which is in sliding connection with the lower jacking movable seat, and the top of the lower jacking support is provided with a shaft sleeve.
2. 2. The assembly device of the worm assembly as claimed in claim 1, wherein the conveying module comprises a robot and/or at least one lifting and rotating mechanism, and the lifting and rotating mechanism comprises a material taking clamping jaw and a lifting and rotating assembly for driving the material taking clamping jaw to lift and rotate.
3. 3. The assembly device of the worm assembly according to claim 1, wherein the press-fitting mechanism comprises a press-fitting drive, a press-fitting rod and a press-fitting guide seat, the press-fitting drive is arranged at the top of the press-fitting seat, the press-fitting guide seat is arranged at the output end of the press-fitting drive, the press-fitting rod is arranged below the press-fitting guide seat, the front side of the press-fitting seat is provided with sliding rails which are oppositely arranged at two sides of the press-fitting rod, and the press-fitting guide seat is in sliding connection with the sliding rails; The lifting mechanism comprises a lifting connecting seat and a clamping jaw air cylinder, the lifting connecting seat is connected with the output end of the lifting mechanism, the clamping jaw air cylinder is arranged on the front side of the lifting connecting seat, two lifting clamping jaws are arranged at the output end of the clamping jaw air cylinder, a clamping part and a lifting part are arranged at the clamping end of the lifting clamping jaw, the clamping part is arc-shaped and is used for clamping a worm assembly, and the lifting part is arranged at the lower end of the clamping part and extends towards the center of the arc-shaped clamping part and is used for lifting a curling ring.
4. 4. The assembly device of the worm assembly according to claim 1 or 3, wherein the guide mechanism comprises a guide rod, a guide sliding seat and a guide connecting rod, the guide rod is coaxially arranged with the press-fit rod, the lower end of the guide rod is elastically connected with the guide sliding seat, the upper end of the guide rod can extend into the press-fit hole of the riveting tool, one end of the guide sliding seat is provided with the guide connecting rod extending towards the lifting mechanism, the guide connecting rod is connected with the output end of the lifting mechanism, and the guide mechanism further comprises a guide assembly for guiding the movement of the guide rod.
5. 5. The assembly device of the worm assembly according to claim 1, wherein the cleaning oiling module comprises a cleaning mechanism and an oiling mechanism, the cleaning mechanism is used for cleaning the worm assembly, the oiling mechanism comprises a pressure cylinder, a pressure oil cavity is arranged in the pressure cylinder, multiple rows of oiling holes are formed in the inner side wall of the pressure oil cavity and axially arranged along the pressure cylinder, each row of oiling holes comprises a plurality of oiling holes which are circumferentially arranged, and each row of oiling holes is arranged close to tooth grooves of each tooth of the worm.
6. 6. The assembly device of the worm assembly according to claim 5, wherein the oiling mechanism further comprises an oiling cylinder, the lower end of the oiling cylinder is fixed on the workbench, a placing hole for placing the worm assembly is formed in the upper end of the oiling cylinder, the pressure cylinder is arranged in the oiling cylinder, a cavity communicated with the placing hole is formed in the pressure cylinder, at least a tooth-shaped portion of the worm to be oiled is contained in the cavity and is in clearance fit with the tooth-shaped portion, at least one oil inlet communicated with the pressure oil cavity is formed in the oiling cylinder, an oil inlet connector is arranged on the oil inlet, and an oil receiving tank is arranged below the oiling cylinder.
7. 7. The assembly device of the worm assembly of claim 1, wherein the positioning mechanism comprises a positioning tool, a righting assembly and a pressing assembly, the positioning tool is arranged on a positioning bottom plate and used for positioning the position of the workpiece shell, and a transverse moving assembly for driving the positioning bottom plate to move along the front-back direction is arranged below the positioning bottom plate; The lower pressing assembly is used for fixing a workpiece and comprises a lower pressing plate and a lower pressing drive, the lower pressing drive is arranged on an upper pressing support, a lower pressing moving plate is arranged at the output end of the lower pressing drive, the lower pressing plate is arranged on the front side of the lower pressing moving plate and can be pressed down on the top of the workpiece under the action of the lower pressing drive, the righting assembly is arranged right above a positioning tool and used for receiving materials and righting a worm, the righting assembly comprises a righting cylinder, a U-shaped through hole is formed in the middle of the lower pressing plate, the righting cylinder is arranged in the U-shaped through hole, two righting clamping jaws are arranged at the output end of the righting cylinder, a righting hole which is coaxially arranged with a worm shaft hole is formed between the two righting clamping jaws when the righting clamping jaws are closed, and the righting hole is in clearance fit with the maximum outer diameter part on the worm.
8. 8. The assembly device of the worm assembly of claim 1, wherein the upper pressing mechanism is arranged on the upper pressing support and comprises an upper pressing cylinder, an upper pressing connecting seat and an upper pressing rod, the upper pressing cylinder is arranged at the upper end of the upper pressing support, a connector connected with the upper pressing connecting seat is arranged at the output end of the upper pressing cylinder, a spring I is arranged at the top of the upper pressing rod, a spring pressing cover is arranged above the spring I, the upper pressing rod is elastically connected with the upper pressing connecting seat through the spring I, and a pressure sensor for detecting the worm pressing pressure is arranged between a top plate of the upper pressing connecting seat and the spring pressing cover.
9. 9. The assembly device of the worm assembly according to claim 1, wherein the gear shifting mechanism is arranged on the lower ejector mechanism and comprises a gear shifting cylinder, a gear shifting rod and a shifting block, the driving assembly can drive the gear shifting mechanism to synchronously move with the lower ejector rod, the gear shifting rod is arranged at the output end of the gear shifting cylinder, the gear shifting rod is inserted into the lower ejector rod, the top of the gear shifting rod is provided with the shifting block, the first end of the shifting block is hinged with the lower ejector rod, the second end of the gear shifting rod is provided with a shifting part matched with the outer teeth of the worm wheel, the middle part of the shifting block is also provided with a hinge hole hinged with the gear shifting rod, and under the action of the gear shifting cylinder, the shifting block rotates around a hinge point of the first end so as to extend out of the lower ejector rod to shift the worm wheel or retract the lower ejector rod.
10. 10. The assembly device of a worm assembly according to claim 1 or 8, wherein the press-fitting module further comprises a snap ring press-fitting mechanism, the snap ring press-fitting mechanism comprises an upper press cylinder, a guide seat and a guide sleeve, the upper press cylinder is arranged below the upper press connecting seat and is elastically connected with the upper press connecting seat of the upper press mechanism through a plurality of springs II, the upper press cylinder is sleeved outside the upper press rod and is in sliding connection with the upper press rod, the guide cylinder is arranged on one side of the upper press support, the output end of the guide cylinder is provided with the guide seat positioned on the front side of the upper press support, the middle part of the guide seat is provided with the guide sleeve, the guide sleeve and the upper press cylinder are concentrically arranged, and the upper press cylinder can be inserted into the guide sleeve under the action of the upper press mechanism and is in sliding connection with the guide sleeve.
11. 11. The assembly device of the worm assembly according to claim 1 or 8, wherein the clamping ring feeding module comprises a feeding support, a feeding assembly I, a detection mechanism and a feeding assembly II, wherein the feeding barrel, the feeding assembly I, the detection mechanism and the feeding assembly II are arranged on the feeding support, a plurality of clamping rings which are stacked are arranged in the feeding barrel, the feeding assembly I is arranged below the feeding barrel and is used for feeding the clamping rings in the feeding barrel to a detection station, the detection mechanism is arranged on the detection station and comprises a detection seat and a pushing assembly, the detection seat can bear the clamping rings, a detection sensor used for detecting the placement direction of the clamping rings is arranged on the detection seat, the pushing assembly II is used for pushing the clamping rings with wrong placement direction away from the detection seat, and the feeding assembly II is connected with the detection seat and is used for feeding the clamping rings borne on the detection seat to the press-fit module.
12. 12. The assembly device of the worm assembly of claim 11, wherein the feed cylinder comprises a feed cylinder side seat, a feed cylinder base, vertical rods, sliding bars and a counterweight sleeve, the feed cylinder side seat is arranged on the upper feed support, one side of the lower end of the feed cylinder side seat is provided with the feed cylinder base, the vertical rods are provided with a plurality of vertical rods, the vertical rods are annularly arranged above the feed cylinder base, the tops of the vertical rods are provided with a top cover connected with a plurality of ejector rods, the sliding bars are arranged on one side, facing the vertical rods, of the middle part of the feed cylinder side seat, the opening ends of the clamping rings are clamped outside the sliding bars, grooves matched with the sliding bars are formed in the feed cylinder base and the top cover, the counterweight sleeve is sleeved outside the vertical rods, and the clamping rings in the booster feed cylinder fall.
13. 13. The assembly device of the worm assembly of claim 11, wherein the first feeding assembly comprises a first feeding cylinder, a first feeding plate and a first guide rail, the first feeding plate is arranged at the output end of the first feeding cylinder, the first feeding plate is arranged below the charging barrel and is provided with a receiving hole corresponding to the charging barrel, the first guide rail is arranged below the feeding plate and is in sliding connection with a guide rail sliding block arranged on the feeding support, the first feeding plate is further provided with a feeding guide plate above the first feeding plate, the feeding guide plate is arranged along the feeding direction of the first feeding plate, and a guide channel is arranged between the feeding guide plate and the first feeding plate.
14. 14. The assembly device of the worm assembly according to claim 11, wherein the bottom of the detection seat is provided with a groove, a plurality of magnets are arranged on the periphery of the groove, at least part of the magnets are positioned in the groove and used for magnetically attracting the clamping ring, the detection seat is also provided with a clamping cylinder, the output end of the clamping cylinder is provided with two clamping jaws, and the clamping jaws are provided with clamping parts which can extend into the groove; The pushing assembly comprises a pushing support, a pushing cylinder and a pushing cylinder, the pushing support is arranged on the feeding support, the pushing cylinder is arranged on the pushing support, the output end of the pushing cylinder is provided with the pushing cylinder, the pushing cylinder is arranged right above the detection seat, the detection seat and the feeding support are provided with a penetrating blanking hole, a blanking pipe for guiding blanking is arranged below the blanking hole of the feeding support, and a collecting box is arranged below the blanking pipe.
15. 15. The assembly device of the worm assembly of claim 11, wherein the second feeding assembly comprises a second feeding cylinder, a second feeding plate, a second guide rail and a receiving plate, the second feeding cylinder is arranged on the feeding support, the second feeding plate is arranged at the output end of the second feeding cylinder and is connected with the detection seat, the second guide rail is arranged below the second feeding plate and is in sliding connection with a guide rail sliding block arranged on the feeding support, one end of the receiving plate is in lap joint with the detection seat positioned at the detection station, the other end of the receiving plate is connected with a clamping ring pressing mechanism of the pressing module, the top surface of the receiving plate is in sliding connection with the bottom surface of the detection seat, and the clamping ring positioned in the groove is received in the feeding process.

Description

Assembling device for worm assembly Technical Field The invention relates to the technical field of steering system assembly, in particular to an assembly device of a worm assembly. Background Steering gears are the most important components in automotive steering systems. The steering gear is internally provided with a transmission structure, the transmission structure is mostly driven by a motor, and when the steering gear is assembled, the transmission structure is arranged in the shell to form a transmission integrated piece, and then the motor is assembled. The transmission structure of the steering gear comprises a worm and gear transmission structure, in the assembly process of the worm and gear transmission structure, the auxiliary part on the worm is generally assembled on the worm of the main part, and then the worm component is assembled with the worm wheel in a matching way, but the matching assembly of the worm component and the worm wheel is very difficult. At present, most of the worm and gear transmission structure is assembled manually, the assembly efficiency is low, in the assembly process, the phenomenon of staggered teeth and collision damage easily occurs in the gear matching of the worm wheel and the worm, so that the worm wheel and the worm are in excessively tight engagement or excessively loose engagement, the rotation abrasion is large, the noise is large, the transmission efficiency is low, particularly, when the hardness of the teeth of the worm and the worm wheel is different, the damage condition is more serious, even the transmission fails, the reject ratio is improved, and the assembly efficiency and the assembly quality are seriously influenced. Disclosure of Invention The invention aims to provide an assembling device of a worm assembly, which overcomes the defects in the prior art. In order to solve the technical problems, the assembly device of the worm assembly comprises a workbench, a riveting module, a clean oiling module, a press-fitting module and a clamp ring feeding module which are arranged on the workbench, wherein the riveting module is used for riveting auxiliary parts on a curled ring fixed worm, the clean oiling module is arranged between the riveting module and the press-fitting module and is used for cleaning the worm assembly and oiling the worm, the press-fitting module is used for press-fitting the worm and the clamp ring and comprises a positioning mechanism, an upper pressing mechanism and a tooth shifting mechanism, the positioning mechanism is used for positioning and fixing a workpiece, the upper pressing mechanism is arranged above the positioning mechanism and is used for connecting the worm to a worm wheel in a workpiece shell by press-fitting the worm to the shell, and the tooth shifting mechanism is arranged below the positioning mechanism and can shift the worm wheel to rotate in the press-fitting process of the worm, and the clamp ring feeding module is arranged on one side of the press-fitting module and is used for feeding the clamp ring to the press-fitting module; The device also comprises a conveying module, wherein the conveying module is used for conveying materials among the riveting module, the clean oiling module and the press mounting module. Further, in the assembly device of the worm assembly, the conveying module comprises a robot and/or at least one lifting and rotating mechanism, and the lifting and rotating mechanism comprises a material taking clamping jaw and a lifting and rotating assembly for driving the material taking clamping jaw to lift and rotate. Further, the assembly device of the worm assembly comprises a press mounting seat, a press mounting mechanism, a lifting mechanism, a guide mechanism, a riveting tool and a lifting mechanism, wherein the press mounting mechanism is arranged at the upper end of the press mounting seat, the riveting tool is arranged at the bottom of the press mounting seat, the press mounting mechanism is matched with the riveting tool to press mount the riveting crimping ring, the lifting mechanism is arranged between the press mounting mechanism and the riveting tool and used for lifting the position of the fixed worm assembly and limiting the crimping ring on the worm, the lifting mechanism is arranged on the press mounting seat, the output end of the lifting mechanism is connected with the lifting mechanism and the guide mechanism, the lifting mechanism and the guide mechanism can be driven to synchronously move to guide and convey the worm assembly to the riveting tool, and the guide mechanism is arranged below the riveting tool and is propped against the bottom of the worm assembly to guide and press the bottom of the worm assembly when the riveting tool is pressed. Preferably, the riveting tool comprises a tool bottom plate and a tool base, the tool bottom plate is fixed on the press-fit seat, a working base is arranged above the tool bottom plate, the tool base is detachably connecte