Nut riveting tool with rotating function

Abstract

The utility model relates to the technical field of automobiles, household appliances and metal plates, and discloses a nut riveting tool with a rotating function, which comprises a metal plate shell, a machine core front seat, a machine core rear seat and a base are arranged at the bottom of the inner side of the metal plate shell, and lead screw nuts are arranged at the tops of the machine core front seat and the machine core rear seat. The top of the machine core front seat is connected with a thrust bearing and a needle bearing b, the top of the thrust bearing and the top of the needle bearing b are provided with a lead screw, the upper left corner of the lead screw is provided with a lining a, the lower right corner of the lead screw is provided with a lining b, and the upper side and the lower side of the left end of the lead screw are provided with a needle bearing a and a needle bearing c respectively. According to the rivet nut tool with the rotating function, the pull rod and the gun head are designed to rotate together, so that the rivet nut, the pull rod and the gun head rotate together when entering a rivet nut hole, the rotation range is limited within a limited angle range, the rivet nut can smoothly enter the hole position, and auxiliary rotation of an external shaft is not needed.

Description

Technical Field

[0001] The utility model relates to the technical fields of automobiles, household appliances and sheet metal, and in particular is a rivet nut tool with a rotating function. Background Art

[0002] General riveting tools do not have a rotation function. They all rely on external shaft rotation and industrial camera auxiliary positioning to allow the hexagonal nut to smoothly enter the hole to perform the riveting action. This has the following problems:

[0003] 1. The external positioning device must have a rotating axis. When setting the riveting action, each hole position must be rotated.

[0004] 2. The general servo riveting tools on the market read the torque value of the servo motor to convert the tension value. Because the servo torque feedback is affected by the servo's own PID adjustment system and external interference, the read data fluctuates greatly and has low accuracy.

[0005] 3. When replacing the pull rod (consumables) of the general servo rivet nut tools on the market, it is necessary to use tools to replace it, which is very inconvenient.

[0006] In view of the above problems, a rivet nut tool with a rotating function is proposed. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In view of the deficiencies in the prior art, the utility model provides a rivet nut tool with a rotation function, which has the advantages of automatic and stable riveting and easy rotation of the rivet nut, and solves the problem of cumbersome rotation and low precision.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose of automatic stable riveting and convenient rotation of rivet nuts, the utility model provides the following technical solutions: a rivet nut tool with a rotating function, comprising a sheet metal shell, the inner bottom of the sheet metal shell is provided with a movement front seat, a movement rear seat and a base, the top of the movement front seat and the movement rear seat are provided with a lead screw nut, the top of the movement front seat is connected with a thrust bearing and a needle bearing b, the top of the thrust bearing and the needle bearing b is provided with a lead screw, the upper left corner of the lead screw is provided with an a bushing, the lower right corner of the lead screw is provided with a bushing b, the upper and lower sides of the left end of the lead screw are respectively provided with a needle bearing a and a needle bearing c, a force sensor is provided on the top of the base, the lead screw is located directly above the force sensor, the right side of the lead screw is connected with a gun head connector, and the right side of the gun head connector is connected with a pull rod.

[0011] As a preferred technical solution of the utility model, a mounting base is provided at the bottom left side of the sheet metal shell, a gear shaft is provided at the top of the mounting base, a gear shaft nylon washer is provided on the outside of the gear shaft, a force sensor rear pressure plate is provided on the top of the gear shaft, the force sensor rear pressure plate is fitted with the force sensor, and a force sensor partition is provided at the bottom of the force sensor.

[0012] As a preferred technical solution of the utility model, a position sensing seat is arranged on the top of the rear pressure plate of the force sensor, a deep groove ball bearing is arranged on the side of the position sensing seat, an internal expansion shaft gear is arranged on the top of the position sensing seat, and a clamping sleeve is arranged on the top of the internal expansion shaft gear.

[0013] As an optimal technical solution of the utility model, a cylindrical ring is opened on the right side of the front seat of the movement, the base is fixedly installed on the inner side of the cylindrical ring, a pull rod base is fixedly installed on the top of the base, a screw rod connecting piece is arranged on the left side of the pull rod base, the screw rod connecting piece is fixedly installed with the lead screw, a pull rod rotating shaft is connected to the right side of the screw rod connecting piece, a thrust bearing a is arranged on the left side of the pull rod rotating shaft, and a thrust bearing b is arranged on the right side of the pull rod rotating shaft.

[0014] As a preferred technical solution of the utility model, a gun head base is fixedly installed at the lower right side of the pull rod shaft, flat keys are respectively provided on the upper and lower sides of the gun head base, bearings a and b are respectively provided on the left and right sides of the top of the two gun head bases, a synchronous pulley a is provided on the right side of the gun head base, and equal height bolts are provided on the top of the gun head base.

[0015] As a preferred technical solution of the utility model, a pull rod transmission pin and a cylindrical pin are arranged on the right side of the gun head connecting piece, a gun head connecting piece jacket is arranged on the outer surface of the gun head connecting piece, a pull rod jacket is arranged on the right side of the gun head connecting piece jacket, a gun head adapter head is arranged on the right side of the pull rod jacket, a gun head locking shaft is arranged on the inner side of the gun head adapter head, and a pull rod is arranged on the outer side of the gun head adapter head.

[0016] As a preferred technical solution of the utility model, a pull rod transmission base is provided on the top of the pull rod outer sleeve, a servo motor is provided on the inner side of the pull rod transmission base, the output end of the servo motor is connected to a b synchronous pulley, the b synchronous pulley cooperates with the a synchronous pulley, a synchronous belt connecting the b synchronous pulley and the a synchronous pulley is provided at the bottom of the gun head base, and a handle is provided on the right end of the outer side of the sheet metal shell.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a rivet nut tool with a rotating function, which has the following beneficial effects:

[0019] The rivet nut tool with a rotating function is designed to rotate the pull rod and the gun head together, so that the rivet nut, the pull rod and the gun head rotate together when entering the rivet nut hole, and the rotation range is limited to a limited angle range, so that the rivet nut can smoothly enter the hole position without the auxiliary rotation of an external shaft, wherein the rotation angle can be set.

[0020] The rivet nut tool with a rotating function collects and transmits the force signal during riveting to the control system by connecting a force sensor in series between the relatively force-bearing parts of the pull rod and the gun head, thereby reducing large data fluctuations caused by external reasons.

[0021] The rivet nut tool with a rotating function saves downtime and is convenient for operators to operate by designing the pull rod to be a tool-free quick-change method, thereby reducing the trouble of carrying tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the structure of the utility model when viewed from above.

[0024] In the figure: 1, movement front seat; 2, lead screw nut; 3, a needle bearing; 4, thrust bearing; 5, b needle bearing; 6, c needle bearing; 7, force sensor partition; 8, movement rear seat; 9, gear shaft nylon washer; 10, gear shaft; 11, a bushing; 12, deep groove ball bearing; 13, position sensing seat; 14, force sensor rear pressure plate; 15, b bushing; 16, mounting base; 17, servo motor; 18, internal expansion shaft gear; 19, expansion sleeve; 20, cylinder ring; 21, base; 22, screw rod connector; 23, pull rod base; 24, a Thrust bearing; 25, pull rod shaft; 26, gun head base; 27, a bearing; 28, flat key; 29, a synchronous pulley; 30, gun head connector; 31, pull rod transmission pin; 32, cylindrical pin; 33, gun head connector jacket; 34, pull rod jacket; 35, gun head adapter; 36, pull rod transmission base; 37, b synchronous pulley; 38, gun head locking shaft; 39, b bearing; 40, b thrust bearing; 41, sheet metal housing; 42, handle; 43, force sensor; 44, lead screw; 45, equal height bolts; 46, synchronous belt; 47, pull rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and 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 direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-2 A rivet nut tool with a rotating function comprises a sheet metal shell 41, a movement front seat 1, a movement rear seat 8 and a base 21 are arranged at the inner bottom of the sheet metal shell 41, a lead screw nut 2 is arranged on the top of the movement front seat 1 and the movement rear seat 8, a thrust bearing 4 and a needle roller bearing 5 are connected to the top of the movement front seat 1, a lead screw 44 is arranged on the top of the thrust bearing 4 and the needle roller bearing 5, an a bushing 11 is arranged at the upper left corner of the lead screw 44, a b bushing 15 is arranged at the lower right corner of the lead screw 44, a needle roller bearing 3 and a needle roller bearing 6 are arranged on the upper and lower sides of the left end of the lead screw 44 respectively, a force sensor 43 is arranged on the top of the base 21, the lead screw 44 is located directly above the force sensor 43, a gun head connector 30 is connected to the right side of the lead screw 44, and a pull rod 47 is connected to the right side of the gun head connector 30.

[0029] It should be noted that the front seat 1 of the movement is used to install the screw bearing and the force sensor 43, the screw nut 2 and the screw 44 convert the rotational motion into linear motion, the a needle bearing 3 and the b needle bearing 5 are used to support the radial motion of the ball screw, and the thrust bearing 4 is used to support the axial force of the screw.

[0030] In this embodiment, a mounting base 16 is provided at the bottom left side of the sheet metal shell 41, a gear shaft 10 is provided at the top of the mounting base 16, a gear shaft nylon washer 9 is provided on the outer side of the gear shaft 10, the gear shaft nylon washer 9 is used to limit the position of the gear shaft 10, a force sensor rear pressure plate 14 is provided on the top of the gear shaft 10, the force sensor rear pressure plate 14 is in contact with the force sensor 43, and a force sensor partition 7 is provided at the bottom of the force sensor 43.

[0031] It should be noted that the c needle bearing 6 is used to support the radial movement of the gear shaft 10, and the force sensor partition 7 and the force sensor rear pressure plate 14 are both used to support the force sensor 43 and support the forward and backward movement of the screw 44.

[0032] In this embodiment, a position sensing seat 13 is arranged on the top of the force sensor rear pressure plate 14, a deep groove ball bearing 12 is arranged on the side of the position sensing seat 13, an internal expansion shaft gear 18 is arranged on the top of the position sensing seat 13, and a tightening sleeve 19 is arranged on the top of the internal expansion shaft gear 18.

[0033] It should be noted that the movement rear seat 8 and the b needle bearing 5 support the lead screw 44 together, and limit the linear motion path of the lead screw 44 together with the position sensing seat 13.

[0034] In this embodiment, a cylindrical ring 20 is opened on the right side of the front seat 1 of the movement, and a base 21 is fixedly installed on the inner side of the cylindrical ring 20. A pull rod base 23 is fixedly installed on the top of the base 21. A screw connector 22 is arranged on the left side of the pull rod base 23. The screw connector 22 is fixedly installed with a screw 44. A pull rod rotating shaft 25 is connected to the right side of the screw connector 22. A thrust bearing a 24 is arranged on the left side of the pull rod rotating shaft 25, and a thrust bearing b 40 is arranged on the right side of the pull rod rotating shaft 25.

[0035] It should be noted that the cylindrical ring 20 is used for riveting force transmission and position restriction, and the base 21 is used as the basis for pull rod rotation and quick-change installation.

[0036] In this embodiment, a gun head base 26 is fixedly installed at the lower right side of the pull rod shaft 25, and flat keys 28 are respectively provided on the upper and lower sides of the gun head base 26. A bearing 27 and b bearing 39 are respectively provided on the left and right sides of the top of the two gun head bases 26. A synchronous pulley 29 is provided on the right side of the gun head base 26, and an equal height bolt 45 is provided on the top of the gun head base 26.

[0037] It should be noted that the gun head base 26, a bearing 27, flat key 28, and a synchronous pulley 29 complete the gun head rotation transmission, support and tension support of the quick-change gun head.

[0038] In this embodiment, a pull rod transmission pin 31 and a cylindrical pin 32 are provided on the right side of the gun head connecting part 30, a gun head connecting part sleeve 33 is provided on the outer surface of the gun head connecting part 30, a pull rod sleeve 34 is provided on the right side of the gun head connecting part sleeve 33, a gun head adapter head 35 is provided on the right side of the pull rod sleeve 34, a gun head locking shaft 38 is provided on the inner side of the gun head adapter head 35, and a pull rod 47 is provided on the outer side of the gun head adapter head 35.

[0039] It should be noted that the gun head connector 30, the pull rod transmission pin 31, the cylindrical pin 32, the gun head connector sleeve 33, and the pull rod sleeve 34 form a pull rod quick change assembly, and bear the tension transmission with the b thrust bearing 40 and the base 21.

[0040] The gun head adapter 35 is mainly used to replace the pull rod and the adapter of the length of the matching specifications according to the needs.

[0041] In this embodiment, a pull rod transmission base 36 is provided on the top of the pull rod sleeve 34, and a servo motor 17 is provided on the inner side of the pull rod transmission base 36. The output end of the servo motor 17 is connected to a b synchronous pulley 37, and the b synchronous pulley 37 cooperates with the a synchronous pulley 29. A synchronous belt 46 connecting the b synchronous pulley 37 and the a synchronous pulley 29 is provided at the bottom of the gun head base 26, and a handle 42 is provided at the right end of the outer side of the sheet metal shell 41.

[0042] It should be noted that the pull rod transmission base 36, the servo motor 17, the synchronous pulley 37, and the synchronous belt 46 can drive the pull rod to rotate.

[0043] The beneficial effects of the above embodiment are:

[0044] By designing the pull rod and the gun head to rotate together, the rivet nut, the pull rod and the gun head rotate together when entering the rivet nut hole, and the rotation range is limited to a limited angle range, so that the rivet nut can smoothly enter the hole position without the auxiliary rotation of an external shaft, wherein the rotation angle can be set.

[0045] By connecting a force sensor in series between the relatively force-bearing parts of the pull rod and the gun head, the force signal during riveting is collected and transmitted to the control system, reducing large data fluctuations caused by external factors.

[0046] By designing the pull rod to be a tool-free quick-change method, downtime is saved, it is also convenient for operators to operate and reduces the trouble of needing to carry tools.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rivet nut tool with a rotating function, comprising a sheet metal housing (41), characterized in that: The inner bottom of the sheet metal housing (41) is provided with a movement front seat (1), a movement rear seat (8) and a base (21); the tops of the movement front seat (1) and the movement rear seat (8) are provided with a lead screw nut (2); the top of the movement front seat (1) is connected with a thrust bearing (4) and a needle roller bearing (5); the tops of the thrust bearing (4) and the needle roller bearing (5) are provided with a lead screw (44); the upper left corner of the lead screw (44) is provided with an a bushing (11 ), a bushing b (15) is arranged at the lower right corner of the lead screw (44), a needle bearing a (3) and a needle bearing c (6) are arranged on the upper and lower sides of the left end of the lead screw (44), a force sensor (43) is arranged on the top of the base (21), the lead screw (44) is located directly above the force sensor (43), the right side of the lead screw (44) is connected to a gun head connector (30), and the right side of the gun head connector (30) is connected to a pull rod (47).

2. A rivet nut tool with a rotating function according to claim 1, characterized in that: A mounting base (16) is provided at the bottom left side of the sheet metal shell (41), a gear shaft (10) is provided at the top of the mounting base (16), a gear shaft nylon washer (9) is provided on the outer side of the gear shaft (10), a force sensor rear pressure plate (14) is provided at the top of the gear shaft (10), the force sensor rear pressure plate (14) is fitted with the force sensor (43), and a force sensor partition (7) is provided at the bottom of the force sensor (43).

3. A rivet nut tool with a rotating function according to claim 2, characterized in that: A position sensing seat (13) is arranged on the top of the rear pressure plate (14) of the force sensor, a deep groove ball bearing (12) is arranged on the side of the position sensing seat (13), an internal expansion shaft gear (18) is arranged on the top of the position sensing seat (13), and a clamping sleeve (19) is arranged on the top of the internal expansion shaft gear (18).

4. The rivet nut tool with a rotating function according to claim 1, characterized in that: A cylindrical ring (20) is provided on the right side of the movement front seat (1), the base (21) is fixedly installed on the inner side of the cylindrical ring (20), a pull rod base (23) is fixedly installed on the top of the base (21), a screw rod connecting piece (22) is provided on the left side of the pull rod base (23), the screw rod connecting piece (22) is fixedly installed with a screw (44), a pull rod rotating shaft (25) is connected to the right side of the screw rod connecting piece (22), a thrust bearing a (24) is provided on the left side of the pull rod rotating shaft (25), and a thrust bearing b (40) is provided on the right side of the pull rod rotating shaft (25).

5. The rivet nut tool with a rotating function according to claim 4, characterized in that: A gun head base (26) is fixedly installed at the lower right side of the pull rod shaft (25), and flat keys (28) are respectively provided on the upper and lower sides of the gun head base (26). A bearing (27) and a bearing (39) are respectively provided on the left and right sides of the top of the two gun head bases (26). A synchronous pulley (29) is provided on the right side of the gun head base (26), and an equal height bolt (45) is provided on the top of the gun head base (26).

6. The rivet nut tool with a rotating function according to claim 5, characterized in that: A pull rod transmission pin (31) and a cylindrical pin (32) are arranged on the right side of the gun tip connector (30); a gun tip connector sleeve (33) is arranged on the outer surface of the gun tip connector (30); a pull rod sleeve (34) is arranged on the right side of the gun tip connector sleeve (33); a gun tip adapter head (35) is arranged on the right side of the pull rod sleeve (34); a gun tip locking shaft (38) is arranged on the inner side of the gun tip adapter head (35); and a pull rod (47) is arranged on the outer side of the gun tip adapter head (35).

7. The rivet nut tool with a rotating function according to claim 6, characterized in that: A pull rod transmission base (36) is arranged on the top of the pull rod sleeve (34), a servo motor (17) is arranged on the inner side of the pull rod transmission base (36), the output end of the servo motor (17) is connected to a b synchronous pulley (37), the b synchronous pulley (37) cooperates with a a synchronous pulley (29), a synchronous belt (46) connecting the b synchronous pulley (37) and the a synchronous pulley (29) is arranged at the bottom of the gun head base (26), and a handle (42) is arranged on the right end of the outer side of the sheet metal shell (41).

Images