CN108081205B - Hand-held pneumatic lining press-fitting gun - Google Patents
Hand-held pneumatic lining press-fitting gun Download PDFInfo
- Publication number
- CN108081205B CN108081205B CN201810013668.8A CN201810013668A CN108081205B CN 108081205 B CN108081205 B CN 108081205B CN 201810013668 A CN201810013668 A CN 201810013668A CN 108081205 B CN108081205 B CN 108081205B
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- China
- Prior art keywords
- piston
- bushing
- air flow
- impact rod
- impact
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- 238000003825 pressing Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 238000010009 beating Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- B25B27/06—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 inserting or withdrawing sleeves or bearing races
- B25B27/064—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 inserting or withdrawing sleeves or bearing races fluid driven
Abstract
The invention discloses a handheld pneumatic bushing press-fitting gun, and aims to provide a pneumatic bushing press-fitting device which is simple, convenient and quick to operate, high in safety and large in concentrated impact force. The invention is realized by the following technical scheme: the high-pressure air flow is divided into two paths, one path passes through the inclined holes of the circular array at the tail part of the end cover (3) to gather energy, the end cover is driven to do rotary motion, the Laval rotary air flow is fed into the barrel dynamic pressure cavity, the impact piston (5) impacts the piston impact rod (10) along the barrel sliding tube channel through the piston bearing (6), the other path passes through the inclined holes of the conical circular array bus of the conical air cylinder (4), the Laval high-pressure concentrated air flow entering the piston bearing end to the circular array hole to form the Laval high-pressure concentrated air flow of the impact piston impact rod spring seat, the high-pressure energy gathering air flow of the impact piston impact rod along the barrel sliding tube channel to accelerate motion is formed again, the piston impact rod end is pushed at a high speed to link the bushing punch (11), the end extends forwards into the bushing to the front end cylinder of the impact bushing punch, and the bushing workpiece is vertically pressed into the inner hole of the bushing workpiece.
Description
Technical Field
The invention relates to a crimping tool for the machine manufacturing industry, in particular to an interference fit device for press fitting various bushings, drill bushings, bearings and shaft sleeves by interference fit press fitting. The quick pneumatic sleeve pressing device with high concentration impact force can accurately, efficiently and quickly press the bushing and the drill sleeve into the hole so as to meet the technical requirements for processing parts.
Background
The press-fitting technology is widely applied in the mechanical manufacturing industry, and belongs to the interference connection category. The bush is a press-fit workpiece with high consumption in the machine industry, the inside of the aperture of the bush is a metal cylinder, and sometimes the outside of the aperture of the bush is wrapped with a rubber layer. The bushing typically has a pilot port that is typically press fit flush with the top surface to more tightly mount the bushing head sleeve together. The tolerance zone of the outer circle or the aperture of the bushing is usually below the tolerance zone of the shaft hole or the shaft, the simplest expression is that the shaft is large in hole size or small in hole size, and the shaft is extruded into a mechanical press-fitting method by using relatively large external force during assembly. The prior art realizes that the bushing is pressed into the workpiece vertically, and the bushing is pressed into the hole body at the end of the workpiece cylinder body in a mechanical mode by adopting a punch. In the process of pressing the rigid bush, parts needing to be pressed are usually hung to a press, bush pressing work is carried out on the parts, and the pressing of the bush is completed under the cooperation of a special tool. The guiding and positioning of the bushing during the press fitting process is achieved by the cooperation of the guide cylinder 4 with the hole of the part 5. The traditional method is adopted to finish the process of turning over the part 1 time and pressing the part 2 times on a press. The bushing press-fitting process generally has the problems of more auxiliary equipment (hoisting equipment and press-fitting equipment), complex process, low efficiency, more potential safety hazards and the like. In addition, the bushing press fitting of large parts is difficult to complete due to the limitations of the working capacity of the press and the like. Therefore, in order to solve the problem of the conventional part bushing press-fitting, it is highly desirable to design a set of convenient press-fitting equipment to improve the production efficiency, reduce the labor intensity and enhance the universality of the press-fitting equipment. Currently press fitting of bushings is still a manually operated device. Compared with the original press-fit method, the bushing or drill sleeve is pressed into the hole mainly by a manual beating mode of workers, and the defect of the mode is that the manual control is difficult, uneven force is applied, the press bias, the bias voltage and even the press skew are easy to cause, and the axial perpendicularity is difficult to ensure. The extrusion that produces in the bush pressure equipment easily causes aperture deformation, and aperture reduces or bloies, if frock hole number is too much, and axial straightness skew easily causes whole set of frock to warp, can lead to whole set of frock quality to become poor, leads to the pressure equipment work piece to be out of order even. Secondly, the surface of the part is easily damaged by manual beating, the inner wall of the aperture is uneven, even the phenomena of fracture, cracking and the like of the bushing or the drill bushing are caused, and the mechanical property of the part is seriously affected; and the manual sleeve knocking and pressing mode is high in labor intensity, time-consuming, labor-consuming and low in efficiency. Even if the mode of pressing the bushing jig and manually controlling the pressing machine to advance and retreat is adopted, the corresponding tool is matched for pressing the bushing press assembly hole, manual operation is adopted, and even the traditional pressing bushing mode of manually beating is not needed, the field production requirement is difficult to meet. Thus, in the prior art, a bushing press-fitting machine fixed on a workbench of a machine frame is provided, a workpiece placement table is fixed on the workbench of the bushing press-fitting machine, a guide shaft is fixed on the workbench, the upper end of the guide shaft is fixed on a top plate, a linear shaft is inserted on the guide shaft, the linear shaft is fixed on a middle plate, a punching head is fixed on the lower end surface of the middle plate, a piston rod of a hydraulic cylinder is fixed on the upper end surface of the middle plate, and the hydraulic cylinder is fixed on the top plate; and a discharging mechanism is arranged below the workbench and is positioned right below the punching head. The bush press-fitting machine realizes bush pressing-in, and the safety hidden trouble existing in manual material taking can be avoided by taking materials in a mechanical mode. The bushing press with the four-column guide and the C-shaped single-arm structure has the defects of complex structure, high manufacturing cost, large and heavy body, fixed installation on the ground, immobility, easy restriction by the environment field, only pressing in the shaft sleeve, need of a discharge mechanism and inconvenient use. The manually operated press mounting equipment has the defects that manual feeding, oiling and other auxiliary adjustment work are needed during each press mounting, so that the work efficiency is low and the labor intensity is high; secondly, the consistency of the bushing press-fitting quality and the safety of the press-fitting process are also to be improved; in addition, when the bush pressure equipment goes wrong, need other equipment to carry out back pressure and take out preceding bush, waste time and energy.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides the pneumatic sleeve pressing device which is low in manufacturing cost, simple, convenient and quick to operate, high in precision, good in efficiency, high in safety and large in concentrated impact force.
The technical scheme includes that the handheld pneumatic bushing press-fitting gun comprises a gun body with an air inlet channel, an air inlet channel 1 with a gun barrel handle 2, a gun barrel end cover air chamber, a high-pressure air flow, a sleeve punch 11, a sleeve workpiece 12 and a sleeve workpiece inner hole, wherein the high-pressure air flow is divided into two paths, one path is energy-gathered through a circular array inclined hole at the tail part of the end cover 3 and drives the end cover 3 to do rotary motion, laval rotary air flow is sent into a gun barrel dynamic pressure cavity, the impact piston 5 impacts the piston impact rod 10 along a gun barrel 9 sliding tube channel through a piston bearing 6, the other path enters the circular array hole through a conical cylinder 4 and forms Laval high-pressure concentrated air flow for impacting a piston impact rod spring seat, the high-pressure energy-gathering air flow for accelerating the piston impact rod 10 along the gun barrel sliding tube channel is formed again, the end of the sleeve punch 11 is pushed at a high speed, the front end of the sleeve punch 11 penetrates into the sleeve in a cylinder body, and the sleeve workpiece 12 is vertically pressed into the sleeve workpiece inner hole.
Compared with the prior art, the invention has the following beneficial effects.
Low manufacturing cost and simple operation. The gun body with the air inlet passage and the air inlet passage 1 with the gun barrel handle 2 are communicated with the gun barrel end cover air chamber, so that the gun is compact in structure, small in size, light in weight, convenient to carry, low in manufacturing cost, light in weight by a plurality of times, small in control difficulty, simple to operate, convenient and quick compared with an expensive bushing press-fitting machine in the prior art.
The safety is high. The piston impact rod of the invention impacts the piston through high air flow air pressure, the air pressure impacts the pressure sleeve, the bushing workpiece 12 is vertically pressed into the inner hole of the bushing workpiece, the bushing and the drill sleeve can be accurately, efficiently and rapidly pressed into the bushing hole, the press mounting process is safe, and meanwhile, the safety of the pressure sleeve is greatly improved due to the most convenient handheld operation space; particularly, the piston impact rod 10 is driven by air pressure, so that the bushing punch is uniformly stressed, the deformation of parts is avoided, and the press sleeve quality of the whole tool is improved; and the punch is tightly attached to the bushing and the drill bushing, so that the surface of the part is not easy to be damaged, the phenomena of breakage, cracking and the like of the bushing and the drill bushing are avoided, the labor intensity of workers is reduced, and the working efficiency is improved. The bushing punch can be used for replacing the multipurpose pneumatic quick sleeve pressing gun with the punch specification according to the inner diameter sizes of the bushing and the drill sleeve, and the bushing punch has a large application range and is not limited by the environment. The punch specification can be changed according to the inner diameter sizes of the bushing and the drill bushing, and the inner diameter size of the bushing can reach 3 mm-60 mm.
The precision is high, and the efficiency is good. The invention adopts the high-speed pushing piston impact rod 10 to end-connect with the bushing punch 11, and the bushing punch 11 is impacted towards the end, so that the bushing workpiece 12 is vertically pressed into the inner hole of the bushing workpiece, the positive pressure of the piston impact rod impacts the bushing, and the consistency of the bushing press-fitting quality is good. The positive pressure of the front bushing can be realized with high efficiency and high quality, and the quick press fitting of the bushing can be conveniently realized. The bushing is pressed into the assembly hole by matching with corresponding tools without adopting a mode of manually controlling the press-fitting machine to advance and retreat. The bushing is pressed and assembled with high quality, so that the labor intensity is effectively reduced, and the production efficiency is improved. The working efficiency is improved by 80% compared with the traditional manual sleeve knocking and pressing mode; the mode of manually controlling the forward and backward movement of the press-fitting machine is avoided, and corresponding tools are matched, so that the operation difficulty of pressing the assembly holes of the bushings is avoided; the defects that manual operation is adopted, the bushing is pressed on the control arm guide post, manual feeding, oiling and other auxiliary adjustment work are needed for each press fitting are overcome, the working efficiency is low, time and labor are wasted, and the labor intensity is high are overcome.
The invention divides high-pressure air flow into two paths, one path gathers energy through the circular array inclined hole at the tail part of the end cover 3 to drive the end cover 3 to rotate, the Laval rotary air flow is sent into the barrel dynamic pressure cavity, the impact piston 5 impacts the piston impact rod 10 along the barrel 9 sliding tube channel through the piston bearing 6, the other path enters the circular array inclined hole at the end of the piston bearing 6 through the conical cylinder 4 conical circular array bus inclined hole to form Laval high-pressure concentrated air flow of the impact rod spring seat, and the Laval high-pressure energy gathering air flow of the impact piston impact rod 10 for accelerating movement along the barrel sliding tube channel is formed again, the energy is gathered by secondary feeding impact force, the piston impact rod 10 end-connected bushing punch 11 is pushed at high speed, the high-concentration impact force is realized, and the bushing is rapidly and accurately pressed.
The invention has the advantages of convenient movement, simple operation, labor efficiency reduction and product quality improvement. The tool bushing has the advantages of wide application range, is particularly suitable for tool bushings with excessive hole numbers, can exert the advantages of the tool bushing, can effectively control the deformation of thin plate bushing parts, and is very suitable for large frames in which some workers are difficult to knock and press the bushing.
Drawings
Fig. 1 is a three-dimensional view of a hand-held pneumatic liner press-fit gun of the present invention.
Fig. 2 is a front cross-sectional view of fig. 1.
FIG. 3 is a cross-sectional view of the tapered cartridge of FIG. 2.
Fig. 4 is a front view of the end cap 3 of fig. 2.
Fig. 5 is a schematic view of the usage state of fig. 1.
In the figure: the device comprises a gas inlet channel 1, a gun barrel handle 2, a 3 end cover, a 4 conical inflator, a 5 piston, a 6 piston bearing, a 7 booster spring, an 8 return spring, a 9 gun barrel, a 10 piston impact rod, an 11 bushing punch, a 12 bushing workpiece, a 13 piston impact rod spring cavity, a 14 piston impact rod spring seat, a 15 gun barrel dynamic pressure cavity and a 16 gun barrel end cover gas chamber.
Detailed Description
See fig. 1-4. In the embodiment described below, a hand-held pneumatic bushing press-fitting gun is provided with a gun body with an air inlet channel, and an air inlet channel 1 with a gun barrel handle 2 is communicated with a gun barrel end cover air chamber, high-pressure air flow is divided into two paths, one path of air flow is collected through a circular array inclined hole at the tail part of the end cover 3 and drives the end cover 3 to do rotary motion, laval rotary air flow is sent into a gun barrel dynamic pressure cavity, an impact piston 5 impacts a piston impact rod 10 along a gun barrel 9 slide channel through a piston bearing 6, the other path of air flow enters into a circular array hole through a conical air cylinder 4 and forms Laval high-pressure concentrated air flow for impacting a piston impact rod spring seat, the high-pressure energy collection air flow for accelerating the movement of the impact piston impact rod 10 along the gun barrel slide channel is formed again, the end of the piston impact rod 10 is pushed at a high speed to be connected with a bushing punch 11, the end of the bushing punch 11 stretches forwards to penetrate into a bushing to the front end of the cylinder of the bushing punch 11, and the bushing workpiece 12 is vertically pressed into a bushing workpiece inner hole. The bushing punch 11 is screwed into the shaft end threaded hole of the piston impact rod 10.
The piston bearing 6 with steps is packaged in a piston impact rod spring cavity, a return spring 8 and a booster spring 7 are respectively arranged at the front and the rear of a piston impact rod spring seat, the return spring 8 and the booster spring 7 drive the piston impact rod to reciprocate through the piston impact rod spring seat, the booster spring 7 pushes the piston impact rod 10 to move downwards at a high speed, the return spring 8 generates upward buffer pressure, and the piston impact rod 10 is pushed to reciprocate up and down in this way.
What has been described above is merely a preferred embodiment of the present invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the principles of the present invention, and such modifications and changes should be considered as falling within the scope of the present invention.
Claims (2)
1. The utility model provides a handheld pneumatic bush pressure equipment rifle, has a rifle body that is made the passageway that admits air to and the passageway that admits air (1) intercommunication barrel end cover air chamber that is made the barrel handle (2), its characterized in that: the high-pressure air flow is divided into two paths, one path of air flow passes through the inclined holes of the circular array at the tail part of the end cover (3) to gather energy, the end cover (3) is driven to do rotary motion, laval rotary air flow is sent into the barrel dynamic pressure cavity, the impact piston (5) impacts the piston impact rod (10) along the barrel (9) sliding tube channel through the piston bearing (6), the other path of air flow passes through the inclined holes of the circular array bus of the conical air cylinder (4) to enter the end of the piston bearing (6) to the circular array hole, laval high-pressure concentrated air flow of the impact piston impact rod spring seat is formed, the high-pressure energy gathering air flow of the impact piston impact rod (10) which moves along the barrel sliding tube channel in an accelerating way is formed again, the end of the piston impact rod (10) is pushed at a high speed to be connected with the bushing punch (11), the front end of the cylinder of the impact bushing punch (11) extends forwards to penetrate into the bushing, and the bushing workpiece (12) is vertically pressed into the inner hole of the bushing workpiece; the lining punch (11) is in threaded connection with the shaft end threaded hole of the piston impact rod (10); the piston bearing (6) with the steps is packaged in the piston impact rod spring cavity, and the front and rear parts of the piston impact rod spring seat are respectively provided with a return spring (8) and a booster spring (7).
2. The hand-held, pneumatic liner press-fit gun of claim 1, wherein: the return spring (8) and the booster spring (7) drive the piston impact rod to reciprocate through the piston impact rod spring seat, the booster spring (7) pushes the piston impact rod (10) to move downwards at a high speed, the return spring (8) generates upward buffer pressure, and the piston impact rod (10) is pushed to reciprocate up and down in this way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013668.8A CN108081205B (en) | 2018-01-08 | 2018-01-08 | Hand-held pneumatic lining press-fitting gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013668.8A CN108081205B (en) | 2018-01-08 | 2018-01-08 | Hand-held pneumatic lining press-fitting gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108081205A CN108081205A (en) | 2018-05-29 |
| CN108081205B true CN108081205B (en) | 2024-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810013668.8A Active CN108081205B (en) | 2018-01-08 | 2018-01-08 | Hand-held pneumatic lining press-fitting gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108081205B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112476327B (en) * | 2020-12-06 | 2022-07-12 | 青岛海通车桥有限公司 | ABS bushing assembling tool and assembling process method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204774A (en) * | 2006-12-20 | 2008-06-25 | 中国科学院沈阳自动化研究所 | Axis used flexibility rib special compact agency |
| CN101444908A (en) * | 2007-08-09 | 2009-06-03 | 成都飞机工业（集团）有限责任公司 | Pneuncatic chopping polishing gun |
| CN102275013A (en) * | 2011-08-15 | 2011-12-14 | 成都飞机工业（集团）有限责任公司 | Pneumatic reciprocating saw |
| CN104723268A (en) * | 2015-03-16 | 2015-06-24 | 江门气派摩托车有限公司 | Press-fitting tool for motorcycle engine pneumatic oil seal |
| CN207736227U (en) * | 2018-01-08 | 2018-08-17 | 成都飞机工业（集团）有限责任公司 | Pneumatic press-fit bushing device |
-
2018
- 2018-01-08 CN CN201810013668.8A patent/CN108081205B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101204774A (en) * | 2006-12-20 | 2008-06-25 | 中国科学院沈阳自动化研究所 | Axis used flexibility rib special compact agency |
| CN101444908A (en) * | 2007-08-09 | 2009-06-03 | 成都飞机工业（集团）有限责任公司 | Pneuncatic chopping polishing gun |
| CN102275013A (en) * | 2011-08-15 | 2011-12-14 | 成都飞机工业（集团）有限责任公司 | Pneumatic reciprocating saw |
| CN104723268A (en) * | 2015-03-16 | 2015-06-24 | 江门气派摩托车有限公司 | Press-fitting tool for motorcycle engine pneumatic oil seal |
| CN207736227U (en) * | 2018-01-08 | 2018-08-17 | 成都飞机工业（集团）有限责任公司 | Pneumatic press-fit bushing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108081205A (en) | 2018-05-29 |
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