CN112171247A - Interference fit part assembling and disassembling device applying ultrasonic vibration and using method - Google Patents
Interference fit part assembling and disassembling device applying ultrasonic vibration and using method Download PDFInfo
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- CN112171247A CN112171247A CN202011030827.9A CN202011030827A CN112171247A CN 112171247 A CN112171247 A CN 112171247A CN 202011030827 A CN202011030827 A CN 202011030827A CN 112171247 A CN112171247 A CN 112171247A
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- interference fit
- cross beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/033—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using vibration
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Abstract
The invention belongs to the field of ultrasonic vibration and mechanical engineering, and discloses an interference fit part assembling and disassembling device applying ultrasonic vibration and a using method. Comprises a press machine, an ultrasonic generating device, a sleeve mechanism and a vibrating mechanism; the ultrasonic vibration pressing machine is characterized in that the pressing machine is a mechanical pressing machine with lifting threads, the ultrasonic generating device is connected with the sleeve mechanism through the flange plate through bolts, the vibration mechanism is connected with the flange plate through the lower end cover and the sleeve mechanism through the bolts, a bottom cross beam is arranged at the bottom of the ultrasonic vibration pressing machine, and a fastening seat is arranged on the bottom cross beam. The invention provides an assembling and disassembling device for an interference fit part by applying ultrasonic vibration and a using method thereof, so that the press fitting force during assembling and the pressure value required during disassembling are effectively reduced, the damage to the contact surface of the part is reduced, the working efficiency and the operation safety are improved, and the labor intensity is reduced.
Description
Technical Field
The invention belongs to the field of ultrasonic vibration and mechanical engineering, and relates to an interference fit part assembling and disassembling device applying ultrasonic vibration and a using method.
Background
The interference fit is widely applied to shaft components of mechanical structures due to high positioning precision, strong bearing capacity and simple and reliable structure. The interference fit parts are generally assembled by adopting a temperature difference method and a press-in method, wherein the temperature difference method adopts a principle of expansion with heat and contraction with cold, and is suitable for assembly with large magnitude of interference; the press-in method is to directly press the shaft parts into the hole parts, and the press-in method is suitable for assembly with small interference. The fitting surface of the part can be scratched in the assembling process of the traditional press-in method, and the assembling quality is affected. The disassembly of the interference fit parts is relatively difficult, and a mechanical disassembly method and a temperature difference disassembly method are commonly adopted at present, but both the two operation methods are time-consuming and labor-consuming, and have certain dangerousness. Therefore, it is necessary to find an assembling and disassembling device for interference fit parts, which reduces the press-fitting force during assembly and the pressure value during disassembly, and improves the assembling and disassembling quality.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the device for assembling and disassembling the interference fit part by applying ultrasonic vibration and the using method thereof, so that the press-fitting force during assembling and the pressure value required during disassembling are effectively reduced, the damage to the contact surface of the part is reduced, the working efficiency and the operation safety are improved, and the labor intensity is reduced.
The above purpose of the invention is realized by the following technical scheme:
an interference fit part assembling and disassembling device applying ultrasonic vibration; comprises a press machine, an ultrasonic generating device, a sleeve mechanism and a vibrating mechanism; the press machine is a mechanical press machine with lifting threads, and comprises a shaft, and the shaft of the press machine is a threaded shaft; the threaded shaft penetrates through threaded holes in the centers of the top cross beam and the middle cross beam; the threaded shaft is connected with a threaded hole formed in the middle cross beam through the top cross beam; the middle cross beam is arranged below the top cross beam; the ultrasonic wave generating device is arranged below the middle cross beam, the ultrasonic wave generating device is connected with the sleeve mechanism through a flange plate by using bolts, and the sleeve mechanism consists of a sleeve, a lower end cover and connecting bolts; the sleeve is a cylinder with an upper flange plate at the upper end and a lower flange plate at the lower end, and 4 lower flange bolt through holes are uniformly distributed on the lower flange along the circumference; the vibration mechanism is connected with the flange plate through a lower end cover by a bolt and a sleeve mechanism, and consists of an energy conversion amplitude-changing component, a fastening bolt and an exchangeable vibration cylinder; the bottom of the device is provided with a bottom cross beam, and the bottom cross beam is provided with a fastening seat.
The threaded shaft is matched with threaded holes in the centers of the top cross beam and the middle cross beam to realize the lifting function.
The use method of the interference fit part assembling and disassembling device applying ultrasonic vibration comprises the following steps: the method specifically comprises the following steps:
firstly, the lifting function of the device is completed by the position of the interference fit part size adjusting device which is assembled or disassembled according to needs through the operating handle on the hand-operated screw press, and the purpose of adjusting the height of the device is achieved.
Secondly, when the device is highly suitable, different vibration barrels are installed according to the size of the interference fit part to be assembled or disassembled. When the interference fit parts are assembled, the outer diameter of the vibration cylinder is smaller than that of the shaft parts; when the interference fit part is disassembled, the inner diameter of the aperture of the vibration cylinder is larger than the outer diameter of the disassembled shaft part, the outer diameter of the vibration cylinder is smaller than the outer diameter of the hole part, and the depth of the vibration cylinder is larger than the axial distance between the on-shaft interference fit part and the end face of the disassembled shaft.
Then, installing different fastening seats, wherein when the interference fit part assembly is completed, the fastening seats are of solid cylindrical structures with the diameters larger than the diameters of the hole parts; when the interference fit parts are disassembled, the fastening seat is a sleeve mechanism with the inner diameter larger than the radius of the shaft parts and the outer diameter larger than the outer diameter of the hole parts.
And finally, lowering the vibration cylinder to the surface of the interference fit part to be assembled or disassembled, starting the ultrasonic generating device, driving the vibration cylinder to vibrate, transmitting the ultrasonic wave sent by the ultrasonic generating device to the surface of the workpiece by the amplitude variation component to generate high-frequency axial vibration, operating the press machine, enabling the lifting screw thread of the press machine to move downwards along the axial direction, and assembling the interference fit shaft part and the hole part or rapidly disassembling the hole part from the shaft part under the combined action of downward acting force and the high-frequency axial vibration by the vibration cylinder.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an assembling and disassembling device for interference fit parts by applying ultrasonic vibration, which effectively reduces the press-fitting force during assembling and the pressure value required during disassembling, and reduces the damage to the contact surface of the parts; the working efficiency and the operation safety are improved, and the labor intensity is reduced. The method can be widely applied to the assembly and disassembly of interference fit parts in various fields.
Drawings
FIG. 1 is a schematic structural diagram of an assembling and disassembling device for interference fit parts by applying ultrasonic vibration.
Fig. 2 is a schematic view of the connection structure of the sleeve of the present invention.
FIG. 3 is a schematic structural diagram of a shaft component according to the present invention.
FIG. 4 is a schematic structural diagram of a hole-like component according to the present invention.
In the figure: 1. the device comprises a press machine, 2 parts of a top beam, 3 parts of self-locking bolts, 4 parts of a middle beam, 5 parts of an ultrasonic generating device, 6 parts of a sleeve mechanism, 7 parts of a vibrating mechanism, 8 parts of shafts, 9 parts of holes, 10 parts of a fastening seat, 11 parts of a bottom beam, 12 parts of a limiting bolt, 6a sleeves, 6b parts of a lower end cover, 7a parts of an amplitude variation part, 7b parts of a fastening bolt and 7c parts of a vibrating cylinder.
Detailed Description
The invention is described in more detail below with reference to specific examples, without limiting the scope of the invention. Unless otherwise specified, the experimental methods adopted by the invention are all conventional methods, and experimental equipment, materials, reagents and the like used in the experimental method can be obtained from commercial sources.
Example 1
An interference fit part assembling and disassembling device applying ultrasonic vibration; as shown in fig. 1-4; comprises a press machine 1, an ultrasonic generating device 5, a sleeve mechanism 6 and a vibrating mechanism 7; the press machine 1 is a mechanical press machine 1 with lifting threads, the press machine 1 comprises a shaft, and the shaft of the press machine 1 is a threaded shaft; the threaded shaft penetrates through threaded holes in the centers of the top cross beam 2 and the middle cross beam 4; the threaded shaft is connected with the threaded holes formed in the top cross beam 2 and the middle cross beam 4; the middle cross beam 4 is arranged below the top cross beam 2; the ultrasonic wave generating device 5 is arranged below the middle cross beam 4, the ultrasonic wave generating device 5 is connected with the sleeve mechanism 6 through a flange plate by using bolts, and the sleeve mechanism 6 consists of a sleeve 6a, a lower end cover 6b and connecting bolts; the sleeve 6a is a cylinder with an upper flange at the upper end and a lower flange at the lower end, and 4 lower flange bolt through holes are uniformly distributed on the lower flange along the circumference; the vibration mechanism 7 is connected with the flange plate through a lower end cover 6b and a sleeve mechanism 6 by bolts, and the vibration mechanism 7 consists of an energy-converting amplitude-changing component 7a, a fastening bolt 7b and an exchangeable vibration cylinder 7 c; the bottom of the device is provided with a bottom cross beam 11, and the bottom cross beam 11 is provided with a fastening seat 10; and two ends of the top cross beam 2 are provided with limiting bolts 12, and the joint of the threaded shaft and the middle cross beam 4 is provided with a self-locking bolt 3.
The threaded shaft is matched with threaded holes in the centers of the top cross beam 2 and the middle cross beam 4 to realize the lifting function.
The use method of the interference fit part assembling and disassembling device applying ultrasonic vibration comprises the following steps: the method specifically comprises the following steps:
firstly, the interference fit part size adjusting device position that the staff assembled as required or dismantled through the operating handle on hand screw press 1, accomplishes the lift function of device, reaches the purpose of adjusting device height.
Secondly, when the device height is suitable, according to the interference fit part size of needs assembly or dismantlement, install different vibration section of thick bamboo 7c. When the interference fit parts are assembled, the outer diameter of the vibrating cylinder 7c is smaller than that of the shaft part 8; when the interference fit part is disassembled, the inner diameter of the aperture of the vibration cylinder 7c is larger than the outer diameter of the disassembled shaft part 8, the outer diameter of the vibration cylinder is smaller than the outer diameter of the hole part 9, and the depth of the vibration cylinder 7c is larger than the axial distance between the on-shaft interference fit part and the disassembled shaft end face.
Then, installing different fastening seats 10, wherein when the interference fit part assembly is completed, the fastening seats 10 are of solid cylindrical structures with the diameter larger than that of the hole parts 9; when the disassembly of the interference fit parts is completed, the fastening seat 10 is a sleeve mechanism 6 with the inner diameter larger than the radius of the shaft part 2 and the outer diameter larger than the outer diameter of the hole part 9.
Finally, the vibration cylinder 7c is lowered to the surface of the interference fit part to be assembled or disassembled, the ultrasonic generating device 5 is started to drive the vibration cylinder 7c to vibrate, the amplitude variation component 7a transmits ultrasonic waves emitted by the ultrasonic generating device 5 to the surface of a workpiece to generate high-frequency axial vibration, the press machine 1 is operated, lifting threads of the press machine 1 move downwards along the axial direction, and the vibration cylinder 7c is enabled to assemble the interference fit shaft part 8 and the hole part 9 or rapidly disassemble the hole part 9 from the shaft part 8 under the combined action of downward acting force and the high-frequency axial vibration.
The embodiments described above are merely preferred embodiments of the invention, rather than all possible embodiments of the invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (2)
1. An interference fit part assembling and disassembling device applying ultrasonic vibration is characterized by comprising a press machine (1), an ultrasonic generating device (5), a sleeve mechanism (6) and a vibrating mechanism (7); the press machine (1) is a mechanical press machine (1) with lifting threads, the press machine (1) comprises a shaft, and the shaft of the press machine (1) is a threaded shaft; the threaded shaft penetrates through threaded holes in the centers of the top cross beam (2) and the middle cross beam (4); the threaded shaft is connected with a threaded hole formed in the middle cross beam (4) through the top cross beam (2); the middle cross beam (4) is arranged below the top cross beam (2); the ultrasonic generator (5) is arranged below the middle cross beam (4), the ultrasonic generator (5) is connected with the sleeve mechanism (6) through a flange plate by using bolts, and the sleeve mechanism (6) consists of a sleeve (6a), a lower end cover (6b) and connecting bolts; the sleeve (6a) is a cylinder with an upper flange at the upper end and a lower flange at the lower end, and 4 lower flange bolt through holes are uniformly distributed on the lower flange along the circumference; the vibration mechanism (7) is connected with the flange plate through a lower end cover (6b) and a sleeve mechanism (6) by bolts, and the vibration mechanism (7) consists of an energy-converting amplitude-changing component (7a), a fastening bolt (7b) and an adjustable vibration cylinder (7 c); the bottom of the device is provided with a bottom cross beam (11), and the bottom cross beam (11) is provided with a fastening seat (10); and limiting bolts (12) are arranged at two ends of the top cross beam (2), and self-locking bolts (3) are arranged at the joints of the threaded shafts and the middle cross beam (4).
2. The use method of the device for assembling and disassembling the interference fit part by applying the ultrasonic vibration as claimed in claim 1 is characterized by comprising the following steps:
the lifting function of the device is completed through an operating handle on a hand-operated screw press (1) according to the position of the interference fit part size adjusting device to be assembled or disassembled, so that the purpose of adjusting the height of the device is achieved;
when the device is appropriate in height, different vibrating cylinders (7c) are installed according to the sizes of interference fit parts to be assembled or disassembled; when the interference fit parts are assembled, the outer diameter of the vibrating cylinder (7c) is smaller than that of the shaft part (8); when the disassembly of the interference fit parts is finished, the bore diameter of the vibration cylinder (7c) is larger than the outer diameter of the disassembled shaft part (8), the outer diameter of the vibration cylinder is smaller than the outer diameter of the hole part (9), and the depth of the vibration cylinder (7c) is larger than the axial distance between the on-shaft interference fit parts and the end face of the disassembled shaft;
installing different fastening seats (10), wherein when the interference fit part assembly is completed, the fastening seats (10) are of a solid cylindrical structure with the diameter larger than that of the hole type part (9); when the disassembly of the interference fit parts is finished, the fastening seat (10) is a sleeve mechanism (6) with the inner diameter larger than the radius of the shaft part (2) and the outer diameter larger than the outer diameter of the hole part (9);
the method comprises the steps of reducing a vibration cylinder (7c) to the surface of an interference fit part needing to be assembled or disassembled, starting an ultrasonic generating device (5), driving the vibration cylinder (7c) to vibrate, transmitting ultrasonic waves emitted by the ultrasonic generating device (5) to the surface of a workpiece by an amplitude variation component (7a) to generate high-frequency axial vibration, operating a press machine (1), enabling lifting threads of the press machine (1) to move downwards along the axial direction, and enabling the vibration cylinder (7c) to be under the combined action of downward acting force and high-frequency axial vibration, assembling the interference fit shaft part (8) and a hole part (9) or rapidly disassembling the hole part (9) from the shaft part (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030827.9A CN112171247A (en) | 2020-09-27 | 2020-09-27 | Interference fit part assembling and disassembling device applying ultrasonic vibration and using method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011030827.9A CN112171247A (en) | 2020-09-27 | 2020-09-27 | Interference fit part assembling and disassembling device applying ultrasonic vibration and using method |
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| CN112171247A true CN112171247A (en) | 2021-01-05 |
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| CN202011030827.9A Pending CN112171247A (en) | 2020-09-27 | 2020-09-27 | Interference fit part assembling and disassembling device applying ultrasonic vibration and using method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559232A (en) * | 2022-03-16 | 2022-05-31 | 西北工业大学 | Knurling assembled camshaft multidimensional ultrasonic vibration auxiliary assembly island |
| CN114856589A (en) * | 2022-05-17 | 2022-08-05 | 中国地质大学（武汉） | Wedge-shaped cutting tooth, preparation method thereof and reinforcing method of shield tunneling machine cutter head |
| CN115351745A (en) * | 2022-08-21 | 2022-11-18 | 北京邮电大学 | Intelligent ultrasonic auxiliary fastening device |
-
2020
- 2020-09-27 CN CN202011030827.9A patent/CN112171247A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114559232A (en) * | 2022-03-16 | 2022-05-31 | 西北工业大学 | Knurling assembled camshaft multidimensional ultrasonic vibration auxiliary assembly island |
| CN114559232B (en) * | 2022-03-16 | 2022-12-23 | 西北工业大学 | Knurling assembled camshaft multidimensional ultrasonic vibration auxiliary assembly island |
| CN114856589A (en) * | 2022-05-17 | 2022-08-05 | 中国地质大学（武汉） | Wedge-shaped cutting tooth, preparation method thereof and reinforcing method of shield tunneling machine cutter head |
| CN114856589B (en) * | 2022-05-17 | 2023-03-10 | 中国地质大学（武汉） | Wedge-shaped cutting tooth, preparation method thereof and reinforcing method of shield tunneling machine cutter head |
| CN115351745A (en) * | 2022-08-21 | 2022-11-18 | 北京邮电大学 | Intelligent ultrasonic auxiliary fastening device |
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