WO2023240996A1 - Outil de rivetage pour rivet à rainure annulaire à haute résistance - Google Patents

Outil de rivetage pour rivet à rainure annulaire à haute résistance Download PDF

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Publication number
WO2023240996A1
WO2023240996A1 PCT/CN2022/142118 CN2022142118W WO2023240996A1 WO 2023240996 A1 WO2023240996 A1 WO 2023240996A1 CN 2022142118 W CN2022142118 W CN 2022142118W WO 2023240996 A1 WO2023240996 A1 WO 2023240996A1
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WO
WIPO (PCT)
Prior art keywords
planetary
riveting
riveting tool
roller
transmission mechanism
Prior art date
Application number
PCT/CN2022/142118
Other languages
English (en)
Chinese (zh)
Inventor
张帅
贾云龙
李伟
罗明洋
毛俊
李传奇
郭龙
廖雪辉
杨林
郭少卿
张小连
Original Assignee
眉山中车紧固件科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 眉山中车紧固件科技有限公司 filed Critical 眉山中车紧固件科技有限公司
Priority to EP22921015.8A priority Critical patent/EP4316687A1/fr
Priority to BR212023014505U priority patent/BR212023014505U2/pt
Priority to CA3215213A priority patent/CA3215213A1/fr
Priority to AU2022423921A priority patent/AU2022423921A1/en
Publication of WO2023240996A1 publication Critical patent/WO2023240996A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/26—Drives for riveting machines; Transmission means therefor operated by rotary drive, e.g. by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/28—Control devices specially adapted to riveting machines not restricted to one of the preceding subgroups

Definitions

  • the invention belongs to the technical field of riveting and fastening, especially to the technical field of design and production of hand-held cordless power tools, and in particular to a riveting tool for high-strength ring-groove rivets.
  • Ring-groove rivets are widely used in fields such as new energy, bridges, and steel structures. If hydraulic tools or pneumatic tools are used, they are subject to on-site operating conditions, such as high altitude, high-voltage power supply, etc. These tools are often difficult to meet the conditions of use. If cordless rechargeable electric riveting tools can be used for installation, these problems can be better solved. At present, the output pulling force of electric riveting tools at home and abroad is below 30kN, which cannot meet the needs of large-diameter rings. Installation requirements for slotted rivets.
  • the present invention discloses a riveting tool for high-strength ring-groove rivets based on the shortcomings of the prior art.
  • the invention provides a riveting tool that can overcome the defects of existing riveting tools when completing riveting of high-strength ring-groove rivets. It adopts a movable electric drive, the maximum riveting pulling force can reach 70kN, and can control different riveting methods.
  • a riveting tool for high-strength ring-groove rivets characterized by: including a gun head assembly, a driving mechanism, a transmission mechanism, a power source and a control module arranged in a riveting tool housing;
  • the gun head assembly includes jaws and anvil for extrusion riveting of ring groove rivets
  • the power source is a removable rechargeable battery
  • the driving mechanism includes a DC motor, a motor-driven reduction gearbox and a drive shaft;
  • the transmission mechanism is a planetary roller screw transmission mechanism.
  • the planetary roller screw shaft of the planetary roller screw transmission mechanism is coaxially driven with the claw of the gun head assembly.
  • the planetary roller screw shaft and the drive shaft of the driving mechanism pass through Individually mounted gear drive connections.
  • the transmission mechanism also includes a roller planetary screw nut that is driven and matched with the planetary roller screw shaft.
  • the roller planetary screw nut is surrounded by a large gear; the diameter of the small gear set by the drive shaft of the driving mechanism is smaller than that of the large gear. diameter, the small gear of the drive shaft set is drivingly connected to the large gear of the planetary screw nut set.
  • the front end face of the roller planetary screw nut is provided with a plane thrust roller bearing
  • the rear end face is provided with a thrust needle roller bearing
  • a set of front and rear needle roller bearings are provided on the outer periphery.
  • a set of needle roller bearings are provided at the front and rear of the drive shaft.
  • the control module of the invention includes: STM32 main controller circuit, current sampling circuit, brushless DC motor drive circuit, Hall stroke protection circuit, overcurrent protection circuit, Hall limit circuit, and blocking protection circuit.
  • the output tension of the riveting tool of the present invention can reach 70kN, and can effectively complete the riveting installation of ring-groove rivets including 12mm diameter specifications; the tool of the present invention has a human-computer interaction interface, and can select riveting installation modes for rivets of different specifications and models; it can By adjusting the input current of the motor, the torque of the motor is controlled, and the output tension of the tool is finally adjusted.
  • the drive and transmission structure of the present invention uses a planetary roller screw as a component that converts rotational motion into linear motion.
  • the planetary roller screw is applied to the design of a handheld lithium-ion riveting tool, and a current control scheme is used to realize the adjustment of the riveting force.
  • the planetary roller screw shaft and the screw nut are in line contact, while the ball screw shaft and the screw nut are in point contact. Line contact has better force bearing than point contact.
  • two types of screws with the same diameter specifications the planetary roller screw can theoretically achieve three times the load capacity and six times the service life of ordinary ball screws. Therefore, in the design of high-tension electric riveting tools, the use of smaller diameter planetary roller screws can meet the design requirements and effectively reduce the weight of the entire machine.
  • Figure 1 is a schematic cross-sectional structural view of the riveting tool of the present invention
  • Figure 2 is a partially enlarged schematic diagram of Figure 1;
  • Figures 3 to 6 are schematic diagrams of the riveting process of short-tailed ring-groove rivets
  • Figures 7 to 10 are schematic diagrams of the riveting process of pull-off ring groove rivets.
  • the riveting tool for high-strength ring-groove rivets of the present invention is driven by its own battery and includes a gun head assembly, a driving mechanism, a transmission mechanism, a power source and the like.
  • the gun head assembly includes a claw 1 and an anvil 2.
  • the anvil 2 is fixedly arranged on the outer sleeve 3 of the gun body.
  • the claw 1 is connected to the transmission mechanism through threads.
  • the power source is provided by a rechargeable lithium battery 20 .
  • the driving mechanism is a reduction motor 18 driven by a rechargeable lithium battery 20 .
  • the transmission mechanism is a planetary roller screw transmission mechanism.
  • the reduction motor 18 drives the planetary roller screw nut 27 to rotate through gear transmission, thereby causing the planetary roller screw shaft 29 to perform axial linear motion to generate pulling force or thrust.
  • the present invention uses a planetary roller screw as a component that converts rotational motion into linear motion.
  • the planetary roller screw is applied to the design of a handheld lithium-ion riveting tool, and a current control scheme is used to adjust the riveting force.
  • the ball screw and the screw nut are in point contact structure; in the riveting tool structure of the present invention, the planetary roller screw shaft 29 and the screw nut 27 are in line contact, and the line contact is better than the point contact.
  • the planetary roller screw can theoretically achieve three times the load capacity and six times the service life of ordinary ball screws.
  • the present invention can meet the design requirements by using planetary roller screws with smaller diameters and effectively reduce the weight of the whole machine.
  • the tool has a human-computer interaction interface through which riveting parameters can be set, such as current size, riveting stroke, etc.
  • the control module of the invention includes an STM32 main controller circuit, a current sampling circuit, a brushless DC motor drive circuit, a Hall stroke protection circuit, an overcurrent protection circuit, a Hall limit circuit, and a blocking protection circuit.
  • the invention can realize riveting control according to the riveting principles and riveting characteristics of different rivets.
  • the riveting tool of the present invention is used to carry out short-tailed ring groove rivets.
  • the ring groove rivet riveting control set a current value Ia and time t. For example, for 12mm rivet riveting, set the current value Ia to 27A and time t to 0.8s; the current sampling circuit will transmit the collected current value Ib to the MCU main controller.
  • Ia>Ib the motor is controlled to continue running with constant power for t time. After the time is reached, the motor starts to brake and reverse, thereby achieving a precise riveting control.
  • the riveting tool of the present invention The advantage is that it can be judged based on the riveting effect whether the anvil is too worn or whether the rivet quality is up to standard.
  • pull-off ring-groove rivets As shown in Figures 7 to 10, for pull-off ring-groove rivets, due to their different riveting compositions and characteristics, pull-off ring-groove rivets present different current change curves.
  • the current is a discrete variation.
  • the pull-off ring groove rivet When the pull-off ring groove rivet is broken, , the current value decreases instantly, so it can be judged whether the rivet is broken based on the change in current value, so as to quickly control the motor to brake and reverse, and achieve the purpose of automatic reversal after the rivet is broken.
  • the working process of the riveting tool of the present invention is: press the start switch 21, the motor 18 is powered and starts to run, and is decelerated by the reduction box 22 to increase the torque.
  • the planetary roller screw nut 27 is installed with a large gear 9, which is connected to the reduction box 22
  • the pinion gear 24 on the shaft engages and drives, further decelerating and increasing the torque of the screw nut 27.
  • the rotation of the pinion gear 24 drives the rotation of the large gear 9 to drive the planetary roller screw nut 27 to rotate.
  • the rotational motion is converted into The linear motion of the planetary roller screw shaft 29 causes the claw 1 to generate a pulling force, which acts on the ring groove rivet, and the forces are mutual, so that the anvil 2 on the gun head generates thrust and squeezes the collar to deform.
  • the control module gives a signal and starts timing until the preset conditions in the program are reached. The motor 18 brakes and reverses to the initial state, thus completing a riveting cycle.
  • the anvil 2 resists the outer edge of the collar, causing the anvil 2 to move in the opposite direction relative to the claw 1 and squeeze the collar. surface.
  • the force used by the anvil 2 to squeeze the collar and achieve a certain deformation requirement is the riveting force, which is equal to the pulling force generated by the roller planetary screw shaft 29 .
  • the size of the riveting force changes in real time and gradually increases.
  • the current of the motor 18 during the riveting process is detected through the current detection sensor on the motor drive circuit board 13, and then the detected current value is fed back to the PLC program for data judgment: when When the detected current value I or time t meets the set riveting mode, the motor immediately brakes and reverses, and the roller planetary screw shaft 29 moves downward to make the claw 1 push the rivet away from the claw head 1, and at the same time the anvil 2 It is also separated from the collar. At this point, the rivet installation is completed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Insertion Pins And Rivets (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

Outil de rivetage pour un rivet à rainure annulaire à haute résistance comprenant un ensemble tête, un mécanisme d'entraînement, un mécanisme de transmission, une source de puissance et un module de commande qui sont agencés dans un boîtier d'outil de rivetage. Le mécanisme de transmission est un mécanisme de transmission à vis à rouleaux satellites ; un arbre de vis à rouleaux satellites (29) du mécanisme de transmission à vis à rouleaux satellites est relié par entraînement coaxial à un encliquetage (1) de l'ensemble tête ; et l'arbre de vis à rouleaux satellites (29) est relié par entraînement à un arbre d'entraînement du mécanisme d'entraînement au moyen d'engrenages montés respectifs.
PCT/CN2022/142118 2022-06-15 2022-12-26 Outil de rivetage pour rivet à rainure annulaire à haute résistance WO2023240996A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP22921015.8A EP4316687A1 (fr) 2022-06-15 2022-12-26 Outil de rivetage pour rivet à rainure annulaire à haute résistance
BR212023014505U BR212023014505U2 (pt) 2022-06-15 2022-12-26 Ferramenta de rebitagem para um rebite de ranhura de anel de alta resistibilidade
CA3215213A CA3215213A1 (fr) 2022-06-15 2022-12-26 Outil a de rivetage de rivets a gorge reduite tres resistants
AU2022423921A AU2022423921A1 (en) 2022-06-15 2022-12-26 Riveting Tool for High-strength Ring Groove Rivet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202221494563.7U CN217570726U (zh) 2022-06-15 2022-06-15 一种用于高强度环槽铆钉的铆接工具
CN202221494563.7 2022-06-15

Publications (1)

Publication Number Publication Date
WO2023240996A1 true WO2023240996A1 (fr) 2023-12-21

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PCT/CN2022/142118 WO2023240996A1 (fr) 2022-06-15 2022-12-26 Outil de rivetage pour rivet à rainure annulaire à haute résistance

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WO (1) WO2023240996A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN217570726U (zh) * 2022-06-15 2022-10-14 眉山中车紧固件科技有限公司 一种用于高强度环槽铆钉的铆接工具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014108398A1 (de) * 2014-06-13 2015-12-17 Techway Industrial Co., Ltd. Elektrisches Nietmutterwerkzeug und ein Steuergerät dafür
CN205798316U (zh) * 2016-05-25 2016-12-14 江苏东成机电工具有限公司 电动拉铆枪
CN111136209A (zh) * 2019-10-29 2020-05-12 宁波蓝圣智能科技有限公司 一种伺服电动自动铆接机
CN111151697A (zh) * 2020-01-20 2020-05-15 眉山中车紧固件科技有限公司 一种电动铆接工具
CN213436970U (zh) * 2020-09-17 2021-06-15 上海威若顿机械制造有限公司 充电式电动铆钉铆接工具
CN217570726U (zh) * 2022-06-15 2022-10-14 眉山中车紧固件科技有限公司 一种用于高强度环槽铆钉的铆接工具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014108398A1 (de) * 2014-06-13 2015-12-17 Techway Industrial Co., Ltd. Elektrisches Nietmutterwerkzeug und ein Steuergerät dafür
CN205798316U (zh) * 2016-05-25 2016-12-14 江苏东成机电工具有限公司 电动拉铆枪
CN111136209A (zh) * 2019-10-29 2020-05-12 宁波蓝圣智能科技有限公司 一种伺服电动自动铆接机
CN111151697A (zh) * 2020-01-20 2020-05-15 眉山中车紧固件科技有限公司 一种电动铆接工具
CN213436970U (zh) * 2020-09-17 2021-06-15 上海威若顿机械制造有限公司 充电式电动铆钉铆接工具
CN217570726U (zh) * 2022-06-15 2022-10-14 眉山中车紧固件科技有限公司 一种用于高强度环槽铆钉的铆接工具

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