CN215145541U - Portable self-plugging rivet short arc cutting gun - Google Patents
Portable self-plugging rivet short arc cutting gun Download PDFInfo
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- CN215145541U CN215145541U CN202121106367.3U CN202121106367U CN215145541U CN 215145541 U CN215145541 U CN 215145541U CN 202121106367 U CN202121106367 U CN 202121106367U CN 215145541 U CN215145541 U CN 215145541U
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- medium liquid
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- liquid recovery
- recovery cover
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Abstract
The utility model discloses a portable blind rivet short arc cutting gun, which comprises a medium liquid recovery cover, a positioning cone and a shell, wherein the medium liquid recovery cover is a container with an opening at one end, the rear end of the medium liquid recovery cover is hermetically connected with the positioning cone, and the front end of the medium liquid recovery cover is embedded into an annular electrode slice with a round hole and is provided with a supporting spring; the positioning cone is of a solid and central opening structure, the rear end of the positioning cone is fixed on the end face of the shell, and the front end of the positioning cone is connected with the medium liquid recovery cover in a sealing manner; the main shaft is a straight pipe-shaped structure made of conductive metal, the front end of the main shaft is provided with a tool electrode and a medium liquid outlet, the rear end of the main shaft is communicated with a medium liquid inlet pipe and is supported by a high-speed rotating joint, and the middle part of the main shaft, which is positioned in the shell, is in driving connection with the stepping mechanism and the rotating mechanism. The utility model discloses a mode of rotating electrode breaks electric arc, changes easily, and medium liquid covers the cutting environment and helps to wash away metallic slag at any time, adopts the mode of high-speed rotary joint and water cover head installation electrode to give the cap head power connection, and the instrument more conveniently carries out the single face operation.
Description
Technical Field
The utility model belongs to the technical field of the riveting, especially, belong to the application of electric arc processing technique in the riveting technique, relate to the application of short electric arc processing technique in the riveting technique, concretely relates to portable self-plugging rivet short electric arc cutting gun.
Background
In recent years, with the increase of requirements on the connection performance of fasteners in the research and development fields of aviation, aerospace and the like, the rivet connection technology becomes the first choice of connection schemes in the industry due to the characteristics of reliable connection, light weight, low cost, simple and convenient process and the like. The fasteners used for the parts of the airplane which are not open mainly have two forms, namely a detachable part, such as a cover, a supporting plate nut/bolt and a quick-release fastener used for a cabin door part, and a large number of single-side blind rivets adopted for a permanent connection part. The large-base titanium alloy single-side thread loose core nail specially designed for composite material structure assembly has extremely high sealing performance and fatigue resistance.
Blind rivets are permanent-joint type fasteners which undergo irreversible deformation by plastic deformation to achieve a stable joint to the joint object. However, this has the problem that once the parts connected by the rivet need to be disassembled during the maintenance of the aerospace machinery, the smooth cutting of the rivet becomes a difficult problem. When small-size rivet cutting operation is involved, a milling 'tool-part' contact type physical cutting mode is generally adopted for rivet cutting, the operation requirement on an engineer is high in the cutting process, once an expensive composite material workpiece is extremely easy to damage due to improper operation, and the cutting efficiency is inevitably greatly reduced if the cutting precision is improved.
The short arc processing technology is a discharge state between an electric spark and an electric arc, the pulse width is in millisecond level, the pulse frequency is generally between 300Hz and 1600Hz, the peak current is large (100-. The short arc discharge is usually steady-state or nearly steady-state self-sustaining discharge generated under the conditions of large current and long pulse, a plasma arc column of the short arc discharge has higher ionization degree, electron temperature and ion temperature, the temperature of the generated plasma arc column can reach more than 10000K, the energy density is close to partial laser-induced plasma, but the electro-thermal energy conversion efficiency is far higher than that of laser. Compared with mechanical processing, the short electric arc cutting method has the advantages that the hardness, toughness and strength of materials do not need to be considered when the workpiece is cut by the short electric arc, the short electric arc cutting method is particularly suitable for rough processing of conductive precious metal materials which are difficult to process, no cutting force exists in the processing process, the workpiece does not generate residual stress, therefore, the cold hardening effect of the workpiece cannot occur to increase the cutting difficulty, and the short electric arc cutting method has remarkable advantages in processing of cavity type workpieces which need to remove a large amount of materials in the rough processing stage.
Disclosure of Invention
An object of the utility model is to provide an efficient, portable handheld, can be used to the cutting electrically conductive material self-plugging rivet, utilize the novel cutting means of short electric arc processing technique.
The utility model discloses a following technical scheme realizes:
portable self-plugging rivet short electric arc cutting gun, including the rifle body with support control system, support control system and provide electric energy, pump sending and retrieve medium liquid, its characterized in that: the gun body consists of a medium liquid recovery cover, a positioning cone and a shell, and a main shaft driven by a stepping mechanism and a rotating mechanism arranged in the shell penetrates through the positioning cone and is positioned in the medium liquid recovery cover;
the medium liquid recovery cover is a container with an opening at one end, the rear end of the medium liquid recovery cover is connected with the positioning cone in a sealing way, an annular electrode plate with a round hole is embedded into the opening at the front end of the medium liquid recovery cover, and a supporting spring is arranged on the rear end face of the electrode plate; the medium liquid recovery cover is communicated with the medium liquid outlet pipe;
the positioning cone is of a solid and central opening structure, the rear end of the positioning cone is fixed on the end face of the shell, and the front end of the positioning cone is connected with the medium liquid recovery cover in a sealing manner;
the main shaft is a straight pipe-shaped structure made of conductive metal, the front end of the main shaft is provided with a tool electrode and a medium liquid outlet, the rear end of the main shaft is communicated with a medium liquid inlet pipe and is supported by a high-speed rotating joint, and the middle part of the main shaft, which is positioned in the shell, is in driving connection with the stepping mechanism and the rotating mechanism.
The central opening of the positioning cone is matched with the spindle shaft in a sealing and rotating and moving way.
The front end of the main shaft is provided with an external thread, and the tool electrode is screwed with the external thread through a screw cap to realize replaceable fixation.
The tool electrode is a hollow ring electrode.
The front end opening of the medium liquid recovery cover is provided with a limiting groove of a through hole structure, the electrode plate is arranged at the front opening end of the limiting groove and is fixed in a limiting mode through an electrode plate cover plate, the rear end face of the electrode plate is fixed with a spring support arranged at the axial center of the medium liquid recovery cover, and a central circular hole of the electrode plate is provided with a hole diameter smaller than the diameter of a self-plugging rivet nut cap and larger than or equal to the diameter of a self-plugging rivet rod.
The stepping mechanism and the rotating mechanism provide axial displacement and rotary driving power for the main shaft; the stepping mechanism comprises a stepping motor, a screw rod, a screw nut, a sliding block and a rotating bearing, wherein the stepping motor is arranged on the outer shell and drives the screw nut to axially move through the screw rod; the rotating mechanism comprises a rotating motor and a gear transmission combined mechanism, wherein the rotating motor is arranged on the sliding block on the opposite side of the screw nut, and drives the main shaft to rotate through the gear transmission combined mechanism which comprises a gear coaxial with the main shaft.
The cylindrical sliding block is fixedly connected with the electric brush frame.
The high-speed rotating joint is connected with the main shaft through threads, the main shaft and the high-speed rotating joint are radially fixed and are not influenced by the rotating motion of the main shaft, the axial direction can perform feeding motion along with the main shaft, and the high-speed rotating joint is provided with a water inlet hole which is externally connected with a water inlet pipe. The high-speed rotary joint is a connecting sealing device and can input liquid into equipment which rotates or reciprocates from one side of a static pipeline. The medium entry can select side or rear end to get into according to the operating mode, and high-speed rotary joint is inside to be set up and to guarantee that the export can stabilize high-speed rotatory through setting up two precision bearing, and the sealing washer can realize wearing and tearing, corrosion-resistant, do not reveal.
Cutting torch utilizes short arc discharge principle, through the mode that machinery arc and fluid arc breakage combined together, stabilizes, high-efficient short arc discharge to the rivet, under the high temperature that produces in the twinkling of an eye discharges, loses out with the annular structure melting with rivet cap head. Because the positive and negative electrode splicing is arranged on the cutting gun, the water cover head is only needed to be buckled on the self-plugging rivet head to be cut after the cutting gun is assembled, the negative power supply is connected to the rivet head in advance through the electrode embedded on the water cover head, the positive tool electrode is used as a loss part to feed to the rivet head, short arc discharge can be generated after the positive tool electrode is close to the rivet head, internal medium liquid is discharged through a water return port arranged on the water cover head after the molten metal scraps are washed away, and the medium liquid is effectively prevented from being scattered on a workpiece. After the rivet head is cut off, the reverse rotation stepping motor retreats the tool electrode to prepare for next cutting work, only the core part of the cut rivet is left, and the punching work can be completed by punching out the punched rivet.
The portable self-plugging rivet short electric arc cutting gun provided by the utility model adopts a short electric arc processing mode to cut off the self-plugging rivet, thereby effectively protecting the non-conductor material plate from being damaged; the electric arc is broken by rotating the tool electrode, in addition, rivet workpieces can be cut uniformly, and the tool electrode is a consumable part and is easy to replace; the electric arc is broken by adopting an internal flushing mode, and the medium liquid covers the cutting environment and helps to flush the molten metal waste residues at any time; in order to ensure the sealing performance of the main shaft in axial and rotary motion, the cutting gun adopts a high-speed rotary joint, and adopts a mode of installing electrodes on a water cover head to connect a power supply to the cover head, so that the tool can more conveniently carry out single-side operation without additionally arranging a power supply wire outside a rivet; the center shaft alignment is kept consistent by using the linear roller bearing, and the stable rotation of the electrode is ensured.
Drawings
FIG. 1 is a schematic view of the cross-sectional structure of the gun body of the portable blind rivet short arc cutting gun of the present invention;
FIG. 2 is the utility model discloses portable self-plugging rivet short arc cutting rifle rivet cutting local schematic diagram.
In the figure, 1-blind rivet, 2-medium liquid recovery cover, 3-tool electrode, 4-main shaft, 5-positioning cone, 6-shell, 7-screw rod, 8-cylindrical slide block, 9-screw nut, 10-stepping motor, 11-electrode piece, 12-spring, 13-water outlet pipe, 14-rotating motor, 15-high-speed rotating joint, 16-switch, 17-water inlet pipe and 18-electric brush holder.
Detailed Description
The present invention will be further described with reference to the following embodiments, which are intended to illustrate the principles of the present invention without limiting the present invention in any way, and the present invention is not beyond the scope of the present invention.
With reference to the attached drawings.
As shown in the figure, the portable blind rivet short arc cutting gun comprises a gun body and a support control system, wherein the support control system provides electric energy, pumps and recovers medium liquid, the gun body is composed of a medium liquid recovery cover 2, a positioning cone 5 and a shell 6, and a main shaft 4 driven by a stepping mechanism and a rotating mechanism arranged in the shell 6 penetrates through the positioning cone 5 and is positioned in the medium liquid recovery cover 2;
the medium liquid recovery cover 2 is a container with an opening at one end, the rear end of the medium liquid recovery cover is hermetically connected with the positioning cone 5, an annular electrode plate 11 with a round hole is embedded into the opening at the front end, and a supporting spring 12 is arranged on the rear end face of the electrode plate 11; the medium liquid recovery cover 2 is communicated with a medium liquid outlet pipe 13;
the positioning cone 5 is of a solid and central opening structure, the rear end of the positioning cone is fixed on the end surface of the shell 6, and the front end of the positioning cone is connected with the medium liquid recovery cover 2 in a sealing way;
the main shaft 4 is a straight pipe-shaped structure made of conductive metal, the front end of the main shaft is provided with a tool electrode 3 and a medium liquid outlet, the rear end of the main shaft is communicated with a medium liquid inlet pipe 17 and is supported by a high-speed rotating joint 15, and the middle part of the main shaft 4 is positioned in the shell 6 and is in driving connection with the stepping mechanism and the rotating mechanism.
The central opening of the positioning cone 5 is matched with the shaft seal of the main shaft 4 in a rotating and moving way.
The front end of the main shaft 4 is provided with an external thread, and the tool electrode 3 is screwed with the external thread through a screw cap to realize replaceable fixation.
The tool electrode 3 is a hollow ring electrode.
The opening of the front end of the medium liquid recovery cover 2 is provided with a limiting groove of a through hole structure, the electrode plate 11 is arranged at the front opening end of the limiting groove and is limited and fixed through an electrode plate cover plate, the rear end face of the electrode plate 11 is supported and fixed with a spring 12 arranged at the axial center of the medium liquid recovery cover 2, and a central circular hole of the electrode plate 11 is provided with a hole diameter smaller than the diameter of a nut cap of the blind rivet 1 and larger than or equal to the diameter of a nut stem of the blind rivet 1.
The stepping mechanism and the rotating mechanism provide axial displacement and rotary driving power for the main shaft 4; the stepping mechanism comprises a stepping motor 10, a screw rod 7, a screw nut 9, a cylindrical sliding block 8 and a rotating bearing, wherein the stepping motor 10 is arranged on the shell 6 and drives the screw nut 9 to axially move through the screw rod 7, the screw nut 9 is fixed on the cylindrical sliding block 8, and the cylindrical sliding block 8 is rotationally connected with the wall of the main shaft 4 through the rotating bearing; the rotating mechanism comprises a rotating motor 14 and a gear transmission combined mechanism, wherein the rotating motor 14 is arranged on the cylindrical sliding block 8 on the opposite side of the screw nut 7, and drives the main shaft 4 to rotate through the gear transmission combined mechanism comprising gears coaxial with the main shaft 4.
The cylindrical sliding block 8 is fixedly connected with a brush holder 18.
The high-speed rotating joint 15 is connected with the main shaft 4 through threads, the main shaft 4 and the high-speed rotating joint 15 are radially fixed and are not influenced by the rotating motion of the main shaft 4, the axial direction can perform feeding motion along with the main shaft 4, and the high-speed rotating joint 15 is provided with a water inlet hole which is externally connected with a water inlet pipe 17. The high speed rotary joint 15 functions to feed liquid from one side of a stationary pipe to a rotating or reciprocating device and to discharge the liquid therefrom. The medium inlet can be selected to enter from the side or the back according to the working condition, two precise bearings are arranged in the high-speed rotating joint 15 to ensure that the outlet can rotate stably at high speed, and the sealing ring is made of special materials and is wear-resistant, corrosion-resistant and leak-free.
The utility model discloses portable self-plugging rivet short arc cutting rifle is to self-plugging rivet cutting design, because the cap head is little when self-plugging rivet cuts, the work piece junction is easily not hard up, and the cutting rifle utilizes annular electrode piece 11 card overhead at self-plugging rivet 1 cap, and the mode that cover 2 compressed tightly downwards is retrieved to medium liquid applys the negative pole power for rivet 1, and wherein electrode piece 11 department is equipped with spring 12 in order to guarantee annular electrode piece 11 more effectively laminating self-plugging rivet 1's round cap head. During the use, firstly, the medium liquid recovery cover 2 is buckled on the cap head of the rivet 1, the medium liquid is supplied through the water inlet pipe 17 after being completely attached, the medium liquid flows into the spindle 4 through the high-speed rotating joint 15 and flows out through the tool electrode 3, the power is switched on at the moment, the brush holder 18 supplies positive power to the spindle 4, the electrode plate 11 supplies negative power to the rivet 1, the stepping motor 10 and the rotating motor 14 start to work, the rotating motor drives the spindle 4 to rotate through the gear, the stepping motor converts the motor rotating motion into linear displacement through the screw rod 7 and the screw nut 9, and the spindle 4 is driven to perform stepping motion through the brush holder 18. Because the high-speed rotary joint 15 still has extremely strong leakproofness to the pipeline during rotary motion, consequently the inside security of cutting device promotes greatly, and the medium liquid is retrieved through outlet pipe 13 after getting into medium liquid recovery cover 2. Short arcing occurs when the tool electrode 3 moves forward close to the rivet 1 and the resulting metal debris is expelled with the dielectric fluid. And (3) moving the tool electrode 3 to the position near the workpiece plate to finish cutting, reversely returning the tool electrode 3 to the original point, then removing the cutting gun, cutting the cap head of the rivet 1 to leave an annular waste part, slightly knocking out the residual rivet 1 rod by using the punch after the rivet 1 is taken away, and finishing cutting the rivet 1. And correspondingly replacing the electrode plates 11 and the tool electrodes 3 with different apertures according to the type of the blind rivet 1 and the size of the head so as to realize the function of multi-disassembling by one machine.
Claims (8)
1. The utility model provides a portable self-plugging rivet short electric arc cutting rifle, includes the rifle body and supports control system, supports control system and provides electric energy, pump sending and retrieve medium liquid, its characterized in that: the gun body consists of a medium liquid recovery cover, a positioning cone and a shell, and a main shaft driven by a stepping mechanism and a rotating mechanism arranged in the shell penetrates through the positioning cone and is positioned in the medium liquid recovery cover;
the medium liquid recovery cover is a container with an opening at one end, the rear end of the medium liquid recovery cover is connected with the positioning cone in a sealing way, an annular electrode plate with a round hole is embedded into the opening at the front end of the medium liquid recovery cover, and a supporting spring is arranged on the rear end face of the electrode plate; the medium liquid recovery cover is communicated with the medium liquid outlet pipe;
the positioning cone is of a solid and central opening structure, the rear end of the positioning cone is fixed on the end face of the shell, and the front end of the positioning cone is connected with the medium liquid recovery cover in a sealing manner;
the main shaft is a straight pipe-shaped structure made of conductive metal, the front end of the main shaft is provided with a tool electrode and a medium liquid outlet, the rear end of the main shaft is communicated with a medium liquid inlet pipe and is supported by a high-speed rotating joint, and the middle part of the main shaft, which is positioned in the shell, is in driving connection with the stepping mechanism and the rotating mechanism.
2. The portable blind rivet short arc cutting gun according to claim 1, characterized in that: the central opening of the positioning cone is matched with the spindle shaft in a sealing and rotating and moving way.
3. The portable blind rivet short arc cutting gun according to claim 2, characterized in that: the front end of the main shaft is provided with an external thread, and the tool electrode is screwed with the external thread through a screw cap to realize replaceable fixation.
4. The portable blind rivet short arc cutting gun according to claim 3, characterized in that: the tool electrode is a hollow ring electrode.
5. The portable blind rivet short arc cutting gun according to claim 3, characterized in that: the front end opening of the medium liquid recovery cover is provided with a limiting groove of a through hole structure, the electrode plate is arranged at the front opening end of the limiting groove and is fixed in a limiting mode through an electrode plate cover plate, the rear end face of the electrode plate is fixed with a spring support arranged at the axial center of the medium liquid recovery cover, and a central circular hole of the electrode plate is provided with a hole diameter smaller than the diameter of a self-plugging rivet nut cap and larger than or equal to the diameter of a self-plugging rivet rod.
6. The portable blind rivet short arc cutting gun according to claim 3, characterized in that: the stepping mechanism and the rotating mechanism provide axial displacement and rotary driving power for the main shaft; the stepping mechanism comprises a stepping motor, a screw rod, a screw nut, a sliding block and a rotating bearing, wherein the stepping motor is arranged on the outer shell and drives the screw nut to axially move through the screw rod; the rotating mechanism comprises a rotating motor and a gear transmission combined mechanism, wherein the rotating motor is arranged on the sliding block on the opposite side of the screw nut, and drives the main shaft to rotate through the gear transmission combined mechanism which comprises a gear coaxial with the main shaft.
7. The portable blind rivet short arc cutting gun according to claim 6, characterized in that: the cylindrical sliding block is fixedly connected with the electric brush frame.
8. The portable blind rivet short arc cutting gun according to claim 3, characterized in that: the high-speed rotating joint is connected with the main shaft through threads, the main shaft and the high-speed rotating joint are radially fixed and are not influenced by the rotating motion of the main shaft, the main shaft can axially perform feeding motion along with the main shaft, and the high-speed rotating joint is provided with a water inlet hole and communicated with a water inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121106367.3U CN215145541U (en) | 2021-05-22 | 2021-05-22 | Portable self-plugging rivet short arc cutting gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121106367.3U CN215145541U (en) | 2021-05-22 | 2021-05-22 | Portable self-plugging rivet short arc cutting gun |
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| Publication Number | Publication Date |
|---|---|
| CN215145541U true CN215145541U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121106367.3U Active CN215145541U (en) | 2021-05-22 | 2021-05-22 | Portable self-plugging rivet short arc cutting gun |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290300A (en) * | 2021-05-22 | 2021-08-24 | 眉山中车紧固件科技有限公司 | Portable self-plugging rivet short arc cutting gun |
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2021
- 2021-05-22 CN CN202121106367.3U patent/CN215145541U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113290300A (en) * | 2021-05-22 | 2021-08-24 | 眉山中车紧固件科技有限公司 | Portable self-plugging rivet short arc cutting gun |
| CN113290300B (en) * | 2021-05-22 | 2024-07-12 | 眉山中车紧固件科技有限公司 | Portable self-plugging rivet short arc cutting gun |
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