CN112296912A - Rapid pin shaft assembling tool and assembling method thereof - Google Patents
Rapid pin shaft assembling tool and assembling method thereof Download PDFInfo
- Publication number
- CN112296912A CN112296912A CN202011101591.3A CN202011101591A CN112296912A CN 112296912 A CN112296912 A CN 112296912A CN 202011101591 A CN202011101591 A CN 202011101591A CN 112296912 A CN112296912 A CN 112296912A
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- CN
- China
- Prior art keywords
- pin
- permanent magnet
- pin shaft
- guider
- tail end
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- Pending
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
Abstract
The invention provides a rapid pin shaft assembling tool and an assembling method thereof, and the rapid pin shaft assembling tool comprises a guider, a permanent magnet and an elastic pin, wherein the peripheral surface of the guider has taper, the diameter of the front end face of the guider is smaller than that of the tail end face, the permanent magnet is fixed on the tail end face of the guider, the pin shaft is magnetically adsorbed by the permanent magnet and is connected to the tail end face of the permanent magnet, the permanent magnet is also provided with a separating mechanism for separating the pin shaft from the permanent magnet, the elastic pin is coaxially connected to the tail end face of the guider, and the tail end of the elastic pin is matched and. The invention can realize the functions of quick centering and quick guiding of the pin shaft and the shaft hole of the connecting piece, ensures higher coaxiality between the assembling tool and the pin shaft, can be quickly separated from the pin shaft after the pin shaft is assembled in place, completes the assembly of the pin shaft, and reduces the damage to the sealing piece and the shaft hole of the connecting piece in the assembling process of the pin shaft.
Description
Technical Field
The invention relates to the technical field of mechanical part assembly, in particular to a rapid pin shaft assembly tool and an assembly method thereof.
Background
The pin shaft assembly usually adopts clearance fit or transition fit. When a plurality of connecting pieces are penetrated, visual judgment is generally adopted to judge whether the shaft holes of the connecting pieces are aligned or not and whether the assembling conditions of the pin shafts are met or not. However, there is a problem that the normal visual observation is largely deviated. When the shaft holes of the connecting pieces are not aligned, the connecting pieces are forcibly assembled by the pin shafts, so that the sealing pieces, the shaft holes and other matching surfaces are easily damaged greatly. And when carrying out the assembly of a plurality of connecting pieces, the shaft hole of a plurality of connecting pieces is difficult for centering, need constantly finely tune the position of each connecting piece in the assembling process, and assembly efficiency is low, influences production line efficiency.
Taking fig. 1 as an example, the figure includes a connecting rod, two rocker arms and a cylinder, and the figure shows an ideal position state of the four connecting pieces. The rocker arms are respectively arranged at two ends of the connecting rod, the oil cylinder is assembled in the middle of the connecting rod through a pin shaft, in this case, the pin shaft needs to penetrate through the oil cylinder, the connecting rod and the rocker arms at two ends of the connecting rod, and the four connecting pieces are required to be aligned to ensure good coaxiality during installation so as to sequentially penetrate through the four connecting pieces.
In actual assembly, all the parts are adjusted to an ideal coaxial position state only by visual and continuous trial assembly, and the efficiency is low. Sometimes, a hand needs to be extended into the shaft hole to judge the offset direction of the connecting piece, so that great potential safety hazards exist. In the process of ceaseless trial assembly, the pin shaft is easy to damage a sealing element and the like during knocking. As shown in FIG. 2, the two ends of the cylinder are respectively provided with a sealing element, when the connecting rod and the shaft hole of the cylinder cannot be centered, the pin shaft easily impacts the sealing element in the trial assembly process, and the sealing element is damaged.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the invention provides the rapid pin shaft assembling tool and the assembling method thereof, which can realize the functions of rapid centering and rapid guiding of the pin shaft and the shaft hole of the connecting piece, and reduce the damage to the sealing piece and the shaft hole of the connecting piece in the pin shaft assembling process.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a round pin axle rapid Assembly frock for the round pin axle assembly, round pin axle terminal surface center has the fabrication hole coaxial with the round pin axle, including director, permanent magnet and elastic pin, the director outer peripheral face taper has, director front end terminal surface diameter is less than tail end terminal surface diameter, the permanent magnet fix on director tail end terminal surface, the round pin axle adsorb, connect on permanent magnet tail end terminal surface by permanent magnet magnetism, the permanent magnet on still be equipped with the separating mechanism who breaks away from round pin axle and permanent magnet, elastic pin coaxial coupling on the tail end terminal surface of director, and the elastic pin tail end pegs graft with round pin axle fabrication hole elastic fit.
In the scheme, the outer peripheral surface of the guider is designed to have taper skillfully, the guiding effect is achieved through the taper, and when the guider sequentially passes through the shaft holes of the connecting pieces, the effects of adjusting and guiding and automatically centering can be effectively achieved. Meanwhile, the guider and the pin shaft are connected through magnetic adsorption of the permanent magnet, and centering between the guider and the pin shaft is realized through matching of the elastic pin and the technical hole, so that automatic guiding and automatic centering are facilitated during assembly, and the pin shaft is conveniently driven to smoothly pass through a plurality of connecting pieces to complete assembly operation.
Preferably, the guider tail end face is inwards recessed to form an annular caulking groove, the permanent magnet corresponds to the annular caulking groove and is of an annular structure, and the permanent magnet is embedded and fixed on the guider tail end face in a matched mode. The permanent magnet is designed into an annular structure, can provide annular uniform magnetic adsorption force for the pin shaft, and meanwhile, the central position is reserved for the elastic pin to be connected and installed.
Preferably, the separating mechanism comprises a separating bolt, threaded holes are formed in the guide and the permanent magnet in a penetrating mode, the separating bolt sequentially penetrates through the threaded holes of the guide and the permanent magnet, and the end face of the separating bolt is spirally ejected out of the end face of the permanent magnet. Due to the design of the separation bolt, the separation bolt can be rotated to extend and retract relative to the end face of the tail end of the permanent magnet. Before and during assembly, the end face of the separation bolt retracts, and normal adsorption of the end face of the tail end of the permanent magnet and the pin shaft is not affected. After the pin shaft is inserted, the separation bolt is rotated to enable the end face of the separation bolt to extend out of the end face of the tail end of the permanent magnet, the separation bolt jacks the permanent magnet and the end face connected with the pin shaft, separation of the assembly tool and the pin shaft is achieved, and the assembly tool is convenient to draw out by overcoming the adsorption force of the permanent magnet.
Preferably, the elastic pin comprises a positioning pin and a positioning pin compression spring, the central position of the end face of the tail end of the guider is provided with a positioning hole, one end of the positioning pin compression spring is fixedly connected with the positioning hole, the other end of the positioning pin compression spring is elastically connected with the positioning pin, and the other end of the positioning pin is matched with the positioning hole to be positioned and inserted in the technical hole of the pin shaft.
The quick assembling tool for the pin shaft comprises the following assembling method:
A. roughly centering and adjusting the position of a connecting piece to be assembled;
B. the technical hole at one end of the pin shaft is inserted and connected with the elastic pin at the end face of the tail end of the guider in a centering way, and the pin shaft extrudes the elastic pin and is connected with the end face of the tail end of the guider in an adsorption way under the magnetic adsorption action of the permanent magnet;
C. the front end of the guider is inserted into the shaft hole of the connecting piece aligned with the rough centering adjustment position to drive the pin shaft connected with the end surface of the rear end of the guider to be assembled with the connecting piece;
D. after the pin shaft is assembled in place, the permanent magnet is separated from the end face of the pin shaft through the separating mechanism, and the assembling tool is pulled out.
The tool and the method for quickly assembling the pin shaft have the advantages that the functions of quickly centering and guiding the pin shaft and the shaft hole of the connecting piece can be realized, high coaxiality between the assembling tool and the pin shaft is ensured, the pin shaft can be quickly separated from the pin shaft after being assembled in place, pin shaft assembly is completed, and damage to the sealing piece and the shaft hole of the connecting piece in the pin shaft assembling process is reduced.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a state diagram of an ideal position of an exemplary linkage.
Fig. 2 is a diagram illustrating an example connector assembly initial position state.
FIG. 3 is a state diagram of an example coarse adjustment position of a link.
Fig. 4 is a structural view of the assembly of the preferred embodiment of the present invention with a pin.
Fig. 5 is a block diagram of the preferred embodiment of the present invention.
Fig. 6 is an exploded view of the preferred embodiment of the present invention.
Fig. 7 is a perspective view of another preferred embodiment of the present invention.
In the figure, the device comprises a connecting piece 1, a connecting piece 2, a rocker arm 3, an oil cylinder 4, a pin shaft 5, a positioning hole 6, a separation bolt 7, a guider 8, a permanent magnet 9, a positioning pin compression spring 10, a positioning pin 11 and a sealing piece.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The quick pin shaft assembling tool shown in fig. 4 to 6 is the most preferred embodiment of the present invention, and is used for assembling a pin shaft, and the center of the end surface of the pin shaft 4 is provided with a fabrication hole coaxial with the pin shaft 4. The assembly tool comprises a guide 7, a permanent magnet 8 and an elastic pin.
The peripheral surface of the guider 7 has conicity, and the diameter of the end surface of the front end of the guider 7 is smaller than that of the end surface of the tail end. The permanent magnet 8 is fixed on the end face of the tail end of the guider 7, and the pin shaft 4 is magnetically adsorbed and connected on the end face of the tail end of the permanent magnet 8 by the permanent magnet 8. In the structure, the peripheral surface of the guider 7 is skillfully designed to have taper, the guiding effect is achieved through the taper, and when the guider 7 sequentially passes through the shaft holes of the connecting pieces, the shaft hole position of the connecting pieces can be effectively adjusted, and the guiding and automatic centering effects are achieved. Meanwhile, the guider 7 is connected with the pin shaft 4 through magnetic adsorption of the permanent magnet 8.
The elastic pin comprises a positioning pin 10 and a positioning pin compression spring 9, a positioning hole 5 is formed in the center of the end face of the tail end of the guider 7, one end of the positioning pin compression spring 9 is fixedly connected with the positioning hole 5, the other end of the positioning pin compression spring is elastically connected with the positioning pin 10, and the other end of the positioning pin 10 is matched, positioned and inserted into the technical hole of the pin shaft 4. The centering between the guider 7 and the pin shaft 4 is realized through the matching of the positioning pin 10 and the technical hole, so that the assembled automatic guiding and automatic centering are facilitated, and the coaxial movable pin shaft 4 with the guider 7 can conveniently pass through a plurality of connecting pieces smoothly.
In practical design, in order to provide a circumferential uniform magnetic adsorption force for the pin shaft 4, a central position is simultaneously reserved for connecting and installing the positioning pin 10 and the positioning pin compression spring 9. The end face of the tail end of the guider 7 is inwards concave and provided with an annular caulking groove, the permanent magnet 8 is of an annular structure corresponding to the annular caulking groove, and the permanent magnet 8 is embedded and fixed on the end face of the tail end of the guider 7 in a matching manner.
In order to facilitate the assembly and disassembly of the pin shaft 4 and the assembly tool, the permanent magnet 8 is further provided with a separating mechanism for separating the pin shaft 4 from the permanent magnet 8. The separating mechanism comprises a separating bolt 6, threaded holes are formed in the guider 7 and the permanent magnet 8 in a penetrating mode, the separating bolt 6 sequentially penetrates through the threaded holes of the guider 7 and the permanent magnet 8, and the end face of the separating bolt is spirally ejected out of the end face of the permanent magnet 8. The design of the separation bolt 6 can realize the extension and retraction of the separation bolt 6 relative to the end face of the tail end of the permanent magnet 8 by rotating the separation bolt 6. Before and during assembly, the end face of the separation bolt 6 retracts, and normal adsorption of the end face of the tail end of the permanent magnet 8 and the pin shaft 4 is not affected. After the pin shaft 4 is inserted, the separation bolt 6 is rotated to enable the end face of the separation bolt 6 to extend out of the end face of the tail end of the permanent magnet 8, the separation bolt 6 jacks the connection end face of the permanent magnet 8 and the pin shaft 4, the assembly tool is separated from the pin shaft 4, and the assembly tool is convenient to overcome the adsorption force of the permanent magnet 8 and is pulled out.
The quick assembling tool for the pin shaft is used for assembling four connecting pieces shown in figure 1, and the assembling method comprises the following steps:
A. as shown in fig. 3, the four connecting pieces to be assembled are roughly centered and adjusted in position as long as the assembly guide 7 can enter;
B. as shown in fig. 4, the fabrication hole at one end of the pin 4 is inserted into the positioning pin 10 at the end face of the tail end of the guider 7, so as to coaxially position the pin 4 and the guider 7, and the pin 4 compresses the positioning pin compression spring 9 and is connected with the end face of the tail end of the guider 7 in an adsorption manner under the magnetic adsorption action of the permanent magnet 8;
C. the front end of the guider 7 is inserted into a shaft hole of the connecting piece at the rough centering adjustment position in an aligning way, and the pin shaft 4 connected with the end surface of the rear end of the guider 7 is driven to be assembled with the connecting piece; when the guider passes through each connecting piece, the guider can play a good role in guiding through the taper, so that each connecting piece can be automatically guided and centered;
D. after the pin shaft 4 is assembled in place, the separation bolt 6 is rotated, the tail end face of the permanent magnet 8 is ejected out of the tail end face of the separation bolt 6, the strong magnetic attraction between the permanent magnet 8 and the pin shaft 4 is overcome, the permanent magnet 8 is separated from the end face of the pin shaft 4, and then the assembly tool can be pulled out to complete the assembly of the pin shaft 4 and the connecting piece.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The utility model provides a round pin axle rapid Assembly frock for round pin axle assembly, round pin axle (4) terminal surface center has the fabrication hole coaxial with round pin axle (4), its characterized in that: including director (7), permanent magnet (8) and elastic pin, director (7) outer peripheral face taper has, director (7) front end terminal surface diameter is less than tail end terminal surface diameter, permanent magnet (8) fix on director (7) tail end terminal surface, round pin axle (4) by permanent magnet (8) magnetic adsorption, connect on permanent magnet (8) tail end terminal surface, permanent magnet (8) on still be equipped with the separating mechanism who breaks away from round pin axle (4) and permanent magnet (8), elastic pin coaxial coupling on the tail end terminal surface of director (7), and the elastic pin tail end is pegged graft with round pin axle (4) fabrication hole elastic fit.
2. The quick pin shaft assembling tool of claim 1, characterized in that: guider (7) tail end terminal surface indent have the annular caulking groove, permanent magnet (8) correspond the annular caulking groove and be annular structure, permanent magnet (8) cooperation embedding fix on guider (7) tail end terminal surface.
3. The quick pin shaft assembling tool of claim 1, characterized in that: the separating mechanism comprises a separating bolt (6), threaded holes are formed in the guider (7) and the permanent magnet (8) in a penetrating mode, and the separating bolt (6) penetrates through the threaded holes of the guider (7) and the permanent magnet (8) in sequence and the end face of the separating bolt is ejected out of the end face of the permanent magnet (8) in a spiral mode.
4. The quick pin shaft assembling tool of claim 1, characterized in that: the elastic pin comprises a positioning pin (10) and a positioning pin compression spring (9), a positioning hole (5) is formed in the center of the end face of the tail end of the guider (7), one end of the positioning pin compression spring (9) is fixedly connected with the positioning hole (5), the other end of the positioning pin compression spring is elastically connected with the positioning pin (10), and the other end of the positioning pin (10) is matched, positioned and inserted into a technical hole of the pin shaft (4).
5. The quick pin shaft assembling tool of claim 1, characterized in that: the method comprises the following steps:
A. roughly centering and adjusting the position of a connecting piece to be assembled;
B. a process hole at one end of a pin shaft (4) is inserted in a centering way with an elastic pin at the tail end face of a guider (7), and the pin shaft (4) extrudes the elastic pin and is connected with the tail end face of the guider (7) in an adsorption way under the magnetic adsorption action of a permanent magnet (8);
C. the front end of the guider (7) is aligned with the shaft hole of the connecting piece of the rough centering adjustment position and inserted, and the pin shaft (4) connected with the end surface of the rear end of the guider (7) is driven to be assembled with the connecting piece;
D. after the pin shaft (4) is assembled in place, the permanent magnet (8) is separated from the end face of the pin shaft (4) through the separating mechanism, and the assembling tool is pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101591.3A CN112296912A (en) | 2020-10-15 | 2020-10-15 | Rapid pin shaft assembling tool and assembling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011101591.3A CN112296912A (en) | 2020-10-15 | 2020-10-15 | Rapid pin shaft assembling tool and assembling method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112296912A true CN112296912A (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011101591.3A Pending CN112296912A (en) | 2020-10-15 | 2020-10-15 | Rapid pin shaft assembling tool and assembling method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112296912A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458777A (en) * | 2021-06-01 | 2021-10-01 | 安徽青松工具有限公司 | Centering assembly method for side wall hole of groove-shaped part for realizing automatic automobile part assembly |
-
2020
- 2020-10-15 CN CN202011101591.3A patent/CN112296912A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113458777A (en) * | 2021-06-01 | 2021-10-01 | 安徽青松工具有限公司 | Centering assembly method for side wall hole of groove-shaped part for realizing automatic automobile part assembly |
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