CN109676347B - Press mounting device and press mounting method for automobile bushing - Google Patents
Press mounting device and press mounting method for automobile bushing Download PDFInfo
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- CN109676347B CN109676347B CN201910008936.1A CN201910008936A CN109676347B CN 109676347 B CN109676347 B CN 109676347B CN 201910008936 A CN201910008936 A CN 201910008936A CN 109676347 B CN109676347 B CN 109676347B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 230000009471 action Effects 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 239000000725 suspension Substances 0.000 description 1
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Classifications
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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
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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
- B23P19/027—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 hydraulic or pneumatic means
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Abstract
The invention discloses a press-fitting device and a press-fitting method of an automobile bushing, wherein the press-fitting device comprises a clamp, a first clamping seat, a second clamping seat and a driving piece for driving a first clamping block and the second clamping seat to move in opposite directions or in opposite directions; the first positioning seat is positioned below the clamp and comprises a first positioning boss, and a yielding port is formed in the first positioning boss; the pushing piece is connected to the first positioning seat and can penetrate through the yielding port to move to the side far away from/close to the clamp, and the driving mechanism is used for enabling the abutting part of the bushing to be turned inwards before press fitting and contained in the limiting port, and press fitting is carried out by using the driving mechanism, so that the abutting part is effectively prevented from being cut and damaged in the press fitting process.
Description
Technical Field
The invention relates to the technical field of press-fitting devices, in particular to a press-fitting device and a press-fitting method for an automobile bushing.
Background
The automobile bush mainly has the effects of noise reduction and vibration reduction and is commonly used in various swing arms in a suspension system. As shown in fig. 7, in the conventional press-mounting manner for the automobile bush, the swing arm body 4 is first fixed in a corresponding fixture during press-mounting, the automobile bush is limited above the swing arm body 4 and aligned with the mounting opening 4a, and the automobile bush is forced to the automobile bush by a press or other driving devices and is press-mounted into the mounting opening 4a of the swing arm body 4. In order to meet the vibration reduction performance of different vehicle types, the structure of the automobile bushing is correspondingly different, for example, fig. 8 shows the structure of another middle bushing, and the automobile bushing comprises an inner pipe 2, an outer pipe 1 and a rubber sleeve 3 formed by vulcanizing the inner pipe and the outer pipe, wherein two ends of the rubber sleeve are provided with abutting parts 3a, the two abutting parts 3a extend from the inner pipe 1 and abut against the end surface of the outer pipe 1, the outer pipe and the mounting port are in interference fit, if the bushing is pressed with the swing arm body in the conventional pressing mode, the abutting part on one side of the rubber sleeve is extruded with the inner side wall of the mounting port to cause the abutting part to be folded towards the outer wall side of the outer pipe, and the outer pipe is made of metal generally, so that the elastic deformation quantity is small, the abutting part is easy to receive excessive shearing force to break, and the whole bushing is scrapped.
Disclosure of Invention
The first object of the invention is to provide a press-fitting device for an automobile bushing, which can conveniently realize press-fitting of the bushing and reduce the rejection rate.
The above object of the present invention is achieved by the following technical solutions:
a press-fitting apparatus of an automotive bush, comprising:
the clamp comprises a first clamping seat, a second clamping seat and a driving piece for driving the first clamping block and the second clamping seat to move in opposite directions or in opposite directions, wherein the first clamping seat is provided with a first limit notch, the second clamping seat is provided with a second limit notch, and when the first clamping seat and the second clamping seat are combined with each other, the first limit notch and the second limit notch are mutually communicated to form a limit opening;
the first positioning seat is positioned below the clamp and comprises a first positioning boss, and the first positioning boss is provided with a yielding port;
the pushing piece is connected with the first positioning seat and can move to one side far away from/close to the clamp through the abdication opening;
the driving mechanism comprises a punch, and the punch is positioned above the clamp and can move away from/close to one side of the clamp.
Through adopting above-mentioned technical scheme, the product of waiting pressure equipment is installed earlier and is fixed a position on first positioning seat, the installation mouth of product can block and establish and realize spacingly on first positioning boss, the bush of waiting pressure equipment is held tightly spacingly in the spacing mouth after first clamping seat and the merger formation of second clamping seat, first clamping seat and second clamping seat clamp on the outer tube of bush, the bush is moved earlier to keeping away from first positioning seat one side displacement by the ejector sleeve earlier before the pressure equipment for in the spacing mouth is acceptd earlier to the butt portion on the bush, later utilize actuating mechanism to promote the bush and remove towards product one side, and accomplish the pressure equipment with the product at last, effectively avoided this kind of bush to cut out butt portion at the pressure equipment in-process, the pressure equipment yield has been improved.
The invention is further provided with: the driving piece is a duplex cylinder, and comprises a cylinder body, a first piston rod and a second piston rod, wherein the first piston rod and the second piston rod are connected to the cylinder body and can move in opposite directions, one end of the first piston rod is connected with a first mounting plate, the first end of the second piston rod is connected with a second mounting plate, the first clamping seat is arranged on the first mounting plate, and the second clamping seat is arranged on the second mounting plate.
Through adopting above-mentioned technical scheme, duplex cylinder can realize the synchronous opposite movement of first piston rod and second piston rod, improves the clamping accuracy to the bush, ensures that the spacing mouth is in the propelling piece under.
The invention is further provided with: the press mounting device further comprises a limiting seat, the limiting seat comprises two limiting baffles, a spacing area is formed between the two limiting baffles, and the limiting area is located above the formed limiting opening.
Through adopting above-mentioned technical scheme, the bush is pressing from both sides tightly spacing when carrying out, and two limiting plates can reduce the lodging before the bush presss from both sides tightly, improves spacing precision.
The invention is further provided with: the press-fit device further comprises a base, the base comprises a bottom plate and a side plate, the first positioning seat is arranged on the base, an adjusting plate is arranged on the side plate, and the clamp is arranged on the adjusting plate.
Through adopting above-mentioned technical scheme, the regulating plate can carry out altitude mixture control on the curb plate, ensures the interval control between the up end of product mounting mouth and the lower terminal surface of first, second clamping seat for the bush when carrying out the pressure equipment, the butt portion of one side can not turn over and roll over, just links up with the product, applicable pressure equipment of different products.
The invention is further provided with: the pushing piece comprises a pushing cylinder, the pushing cylinder is provided with a third piston rod, the third piston rod can be arranged in the yielding port in a penetrating mode, and the end portion of the third piston rod is provided with a first ejector rod and a second ejector rod arranged in the first ejector rod.
Through adopting above-mentioned technical scheme, when the impeller is moving the bush in the top, the second ejector pin can penetrate the through-hole of bush inner tube through the control of diameter and regard as the location, and the surface of first ejector pin is contradicted with the lower terminal surface of bush and is promoted the bush and move up, and the surface area of first ejector pin is the same with the bottom area of bush outer tube, realizes with the biggest butt laminating of bush bottom surface area, disperses the effort on acting on the bush, reduces the stress concentration when moving the bush top.
The invention is further provided with: the driving mechanism is a hydraulic cylinder/air cylinder/hydraulic machine.
By adopting the technical scheme, the selection of the driving mechanism considers the replaceability and the control of the pressure, and the hydraulic cylinder/air cylinder/hydraulic machine has the control of the size of the driving force and the stroke.
The invention is further provided with: the press-fitting device further comprises a second positioning seat, and at least one second positioning boss is arranged on the second positioning seat.
Through adopting above-mentioned technical scheme, the other end that the second location boss can spacing product combines to realize two-point and even three-point spacing with first positioning seat, improves the stability after to the product location, simultaneously because the setting position and the quantity of second location boss on the second positioning seat are indefinite, can set up the overall arrangement according to the characteristics of product, has improved whole pressure equipment device's application range.
The second purpose of the invention is to provide a press-fitting method of the automobile bushing, which can conveniently realize press-fitting of the bushing and reduce the rejection rate.
The above object of the present invention is achieved by the following technical solutions:
a press-fitting method comprises the following steps:
step 1, positioning a swing arm body, namely placing one end of the swing arm body on a first positioning seat, clamping a first positioning boss into a mounting port, placing the other end of the swing arm body on a second positioning seat, and clamping a second positioning boss into the mounting port;
step 2, adjusting the position of the clamp, and moving the vertical height of the adjusting plate on the side plate to enable the lower end faces of the first clamping seat and the second clamping seat to be abutted against the upper end face of the mounting port;
step 3, positioning the bushing, enabling the second ejector rod to extend out through the mounting opening by the action of the pushing piece, aligning the inner hole of the inner tube of the bushing with the second ejector rod, enabling the second ejector rod to be clamped into the inner tube, and enabling the lower end face of the bushing to be abutted against the upper end face of the first ejector rod;
step 4, clamping the bushing, wherein the first clamping seat and the second clamping seat move towards the outer tube of the bushing in opposite directions by the action of the clamp until the outer tube of the bushing is attached to the inner walls of the first limit opening and the second limit opening;
step 5, preparing the bushing before press fitting, enabling the third piston rod to drive the first ejector rod and the second ejector rod to synchronously move by the action of the pushing piece, enabling the bushing to move upwards under the action force of the first ejector rod, enabling the abutting part on the lower side of the bushing to be extruded by the inner walls of the first limiting opening and the second limiting opening to be folded inwards, and resetting the pushing piece;
and 6, pressing the bushing, wherein the driving mechanism acts to apply force on the upper end surface of the bushing by using the punch, so that the bushing moves towards one side of the mounting opening until the whole pressing of the bushing enters the mounting opening to finish the pressing.
By adopting the technical scheme, the bushing is clamped and fixed by the first clamping seat and the second clamping seat, and moves upwards under the action of the pushing piece before press fitting, so that the abutting part is extruded by the inner walls of the first limiting opening and the second limiting opening to be folded inwards and completely enter the first limiting opening and the second limiting opening, and then the driving mechanism is used for pressing the bushing, so that the bushing is pressed into one side of the mounting opening of the swing arm body to finish press fitting; because the position of the clamp needs to be adjusted after the swing arm body is limited and fixed, the lower end faces of the first clamping seat and the second clamping seat are attached to the upper end face of the mounting port of the swing arm body, so that the folded abutting part is always attached to the inner wall of the mounting port when being pressed into the mounting port, and further the situation that the abutting part is broken when being extruded with the upper edge of the mounting port to receive shearing force is effectively avoided; meanwhile, the swing arm body is limited on the first positioning seat, the bushing is initially positioned through the second ejector rod, the second ejector rod is arranged on the first positioning boss in a penetrating mode, so that the mounting precision between the bushing and the swing arm body can be controlled only by controlling the coaxiality of the second ejector rod and the first positioning boss, and the problem that the bushing cannot be pressed due to deviation of a mounting opening during press mounting is solved, or the bushing is damaged due to the fact that a certain deviation exists in press mounting of the second ejector rod and the first positioning boss to generate additional acting force on the bushing.
The invention is further provided with: in the step 3, the length of the second ejector rod entering the inner hole of the inner tube is 0.5-0.7 of the whole height of the inner hole of the inner tube.
Through adopting above-mentioned technical scheme, the second ejector pin mainly plays the preliminary positioning action to the bush, utilize the second ejector pin joint to enter into the hole of bush inner tube in realize, for the length that rocks the second ejector pin after the reduction bush preliminary positioning enters into the inner hole of inner tube can not be less than 0.5 of the whole height of inner tube hole, and the ejector pin card is gone into length and is exceeded when hole 0.7 for example, the time to the produced pulling force distance of inner tube when the second ejector pin is pulled out from the hole is just longer, the friction and wear to the inner tube easily causes simultaneously the bush can have the trend of moving down under the pulling action of second ejector pin, the length that the pulling action time is longer more easily leads to the bush to take place the drunkenness in first spacing mouth and the spacing mouth of second, and then control second ejector pin enters into the length in the inner hole can guarantee to avoid the bush to be by the drunkenness after the centre gripping under the prerequisite of the better location of bush, time when can shorten the second ejector pin to withdraw from, press-fitting efficiency is improved simultaneously.
In summary, the beneficial technical effects of the invention are as follows:
1. the bushing is limited by the arrangement of the clamp and is held tightly on the outer tube of the bushing, the bushing is enabled to move upwards by utilizing the action of the pushing piece before press fitting, the abutting part of the bushing is extruded to be folded inwards when sliding upwards and finally contained in the limiting opening, and finally press fitting is carried out by utilizing the driving mechanism, so that the abutting part is effectively prevented from being cut and damaged in the press fitting process, and the yield of press fitting is improved;
2. the first clamping seat and the second clamping seat in the clamp are driven by the duplex air cylinder to realize synchronous opposite movement of the two clamping seats, so that the clamping precision of the bushing is improved, meanwhile, the second positioning seat is also arranged to position a second point of a product by utilizing the second positioning boss on the second positioning seat, the stability of the product after positioning is improved, and the quality of the product after press-fitting precision and the quality of the product after press-fitting are improved by combining the control of the clamping positioning precision of the bushing with the stability of the product after positioning.
Drawings
FIG. 1 is a schematic diagram of a press-fitting apparatus according to a first embodiment;
FIG. 2 is a schematic diagram showing the structure between the fixture and the first positioning seat and the second positioning seat in the first embodiment;
fig. 3 is an enlarged view of a portion a of fig. 2;
FIG. 4 is a schematic diagram of a clamping state of a clamp according to the first embodiment;
FIG. 5 is a schematic structural diagram of a limiting seat according to the first embodiment;
fig. 6 is a schematic structural diagram in the second embodiment;
FIG. 7 is a schematic view of a bushing structure in a state of being press-fitted with a swing arm body;
FIG. 8 is a schematic view of the structure of the bushing to be press-fitted;
FIG. 9 is a schematic view of a bushing in the third embodiment after being positioned and clamped;
FIG. 10 is a schematic view of the structure of the bushing in the third embodiment when the bushing moves up under the action of the pushing member;
fig. 11 is a schematic diagram illustrating a state when the bushing and the swing arm body are press-fitted in the third embodiment;
fig. 12 is a schematic structural view of the bushing after press-fitting into the swing arm body.
In the figure, 1, an outer tube; 2. an inner tube; 2a, inner holes; 3. a rubber sleeve; 3a, an abutting part; 4. a swing arm body; 4a, an installation port; 10. a hydraulic press; 11. a punch; 12. a bottom plate; 13. a side plate; 14. an adjusting plate; 20. a clamp; 21. a duplex cylinder; 22. a first piston rod; 23. a second piston rod; 24. a first mounting plate; 25. a second mounting plate; 26. a first clamping seat; 261. the first limiting notch; 27. a second clamping seat; 271. the second limiting notch; 28. a limit opening; 30. a first positioning seat; 31. a first positioning boss; 40. a pushing member; 41. a pushing cylinder; 411. a third piston rod; 42. a first ejector rod; 43. a second ejector rod; 50. a limit seat; 51. a limit baffle; 52. a limit area; 60. a second positioning seat; 61. a second positioning boss; 70. and a hydraulic cylinder.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
Referring to fig. 1, a press-fitting device for an automotive bushing comprises a hydraulic press 10, wherein a clamp 20 is arranged on a station of the hydraulic press 10, and the clamp 20 is used for clamping the bushing shown in fig. 8; a first positioning seat 30 is arranged below the clamp 20, the first positioning seat 30 is used for positioning the swing arm body 4 shown in fig. 7, and a pushing piece 40 is further connected to the first positioning seat 30. The hydraulic machine 10 comprises a punch 11, the punch 11 being above the clamp 20 and facing the pusher 40.
Referring to fig. 2 and 3, a base is disposed on a station of the hydraulic press 10, the base includes a bottom plate 12 and a side plate 13 perpendicular to the bottom plate 12, an adjusting plate 14 is connected to the side plate 13 through a fastener, and the adjusting plate 14 can be installed and connected at any vertical height of the side plate 13. The whole clamp 20 is arranged on the adjusting plate 14, the structure of the clamp 20 comprises a duplex air cylinder 21 fixed on the adjusting plate 14, the duplex air cylinder 21 is provided with a first piston rod 22 and a second piston rod 23 which can synchronously move in opposite directions, and the first piston rod 22 and the second piston rod 23 are respectively connected with the two ends of the duplex air cylinder 21 in a telescopic manner. One end of the first piston rod 22 is fixedly connected with a first mounting plate 24, one end of the second piston rod 23 is fixedly connected with a second mounting plate 25, a first clamping seat 26 is arranged on one side surface of the first mounting plate 24, a second clamping seat 27 is arranged on one side surface of the second mounting plate 25 opposite to the first mounting plate 24, and the first clamping seat 26 and the second clamping seat 27 can synchronously move in opposite directions and in opposite directions under the action of the duplex cylinder 21.
A first limiting notch 261 is formed in one side surface of the first clamping seat 26, a second limiting notch 271 is formed in one side surface, opposite to the first clamping seat 26, of the second clamping seat 27, and the inner wall shapes of the first limiting notch 261 and the second limiting notch 271 are matched with the shape of the bushing outer tube 1 to be clamped.
The first positioning seat 30 is located right below the clamp 20 and includes a first positioning boss 31 extending vertically from the end surface, and the first positioning boss 31 can be clamped into the mounting opening 4a of the swing arm body. The pushing member 40 comprises a pushing cylinder 41, the pushing cylinder 41 comprises a third piston rod 411, a first ejector rod 42 is arranged at the end part of the third piston rod 411, a second ejector rod 43 is arranged at the end part of the first ejector rod 42, and the diameter of the first ejector rod 42 is smaller than that of the second ejector rod 43, so that the first ejector rod and the second ejector rod are arranged in a step shape. The middle part of the first positioning boss 31 is provided with a yielding port, and the third piston rod 411 can pass through the yielding port and move towards one side of the clamp 20.
The press-fitting device further comprises a second positioning seat 60, wherein the second positioning seat 60 is adjacent to the first positioning seat 30, and at least one second positioning boss 61 is arranged on the second positioning seat 60, two second positioning bosses 61 are arranged in the embodiment, and the second positioning bosses 61 can be used for positioning the other mounting opening 4a of the swing arm body 4, so that the swing arm body 4 can realize two-point or even multi-point positioning fixation.
Referring to fig. 2 and 4, when the first clamping seat 26 and the second clamping seat 27 are combined, the first limiting notch 261 and the second limiting notch 271 are mutually communicated to form a closed limiting opening 28, the limiting opening 28 can be tightly held on the outer tube 1 to be clamped with the bushing, and the third piston rod 411 can pass through the limiting opening 28 to apply force to the bushing when being displaced.
Referring to fig. 2 and 5, the adjusting plate 14 is further provided with a limiting seat 50, where the limiting seat 50 is located above the fixture 20, and includes two spaced limiting baffles 51, and a limiting area 52 is formed between the two limiting baffles 51, and the limiting area 52 is located above the limiting opening 28 formed as shown in fig. 4.
When the bushing shown in fig. 8 is pressed, one end of the swing arm body 4 is firstly limited and fixed on the first positioning seat 30, so that the first positioning boss 31 is clamped and arranged in the mounting port 4a, and the other end of the swing arm body 4 is clamped with the second positioning boss 61 on the second positioning seat 60 to complete positioning of the swing arm body 4. Then, the bushing to be pressed is placed above the mounting opening 4a of the swing arm body 4, and the second ejector rod 43 on the third piston rod 411 penetrates through the through hole of the bushing inner tube 2 to realize the preliminary positioning of the bushing; starting the duplex air cylinder 21 to synchronously move the first clamping seat 26 and the second clamping seat 27 in opposite directions until the bushing is clamped, and tightly holding the outer tube 1 of the bushing; the third piston rod 411 is driven to move upwards by starting the pushing cylinder 41, the first ejector rod 42 applies force to the lower end surface of the bushing, so that the bushing moves upwards, at the moment, the abutting part 3a is pressed inwards to be folded and finally contained in the formed limit, the driving mechanism acts, the punch 11 applies force to the upper end surface of the bushing to press the bushing downwards, and finally the bushing is pressed into the mounting opening 4a of the swing arm body 4 to finish press mounting.
Example two
Referring to fig. 6, a device for press-fitting an automotive bushing is different from the first embodiment in that a hydraulic cylinder 70 is used as a driving mechanism, and the hydraulic cylinder 70 drives a punch 11 to perform press-fitting operation. The driving mechanism can also be a cylinder under the working condition that the press-fitting force is not required to be too large.
Example III
A press-fitting method of an automobile bushing is realized by adopting the press-fitting device in the first embodiment or the second embodiment. Fig. 8 shows a bushing structure of the press-fitting device according to the first embodiment or the second embodiment, which comprises an inner tube 2, an outer tube 1 and a rubber sleeve 3 filled between the inner tube 1 and the outer tube 1, wherein two ends of the rubber sleeve 3 are respectively provided with an abutting part 3a, and the two abutting parts 3a extend outwards to cover the upper end and the lower end of the outer tube 1.
The specific press-fitting method comprises the following steps:
step 1, positioning a swing arm body
One end of the swing arm body 4 is placed on the first positioning seat 30, the first positioning boss 31 is clamped and arranged in the mounting opening 4a, the other end of the swing arm body 4 is placed on the second positioning seat 60, the second positioning boss 61 is clamped and arranged in the mounting opening 4a, and two-point positioning of the swing arm body 4 is achieved.
Step 2, adjusting the position of the clamp
Moving the vertical height of the adjusting plate 14 on the side plate 13 so that the lower end surfaces of the first clamping seat 26 and the second clamping seat 27 abut against the upper end surface of the mounting port 4 a;
step 3, bushing positioning
Referring to fig. 9, the pushing member 40 acts to drive the third piston rod 411 to move towards one side of the bushing, so that the second ejector rod 43 extends out through the mounting opening 4a, the inner hole 2a of the inner tube 2 is aligned with the second ejector rod 43, the second ejector rod 43 is clamped into the inner tube 2, and the lower end face of the bushing abuts against the upper end face of the first ejector rod 42; the length of the second ejector rod 43 clamped into the inner hole 2a is defined as L, the depth of the whole inner hole 2a is defined as H, and the range value of L/H is controlled to be 0.5-0.7, preferably 0.6.
Step 4, bushing clamping
Referring also to fig. 9, after the bushing is positioned by the second ejector rod 43 and the first ejector rod 42, the clamp 20 acts to enable the first clamping seat 26 and the second clamping seat 27 to move towards each other towards the outer tube 1 of the bushing until the outer tube 1 of the bushing is clamped by the first clamping seat 26 and the second clamping seat 27, so that the outer tube 1 is attached to the inner walls of the first limiting opening 28 and the second limiting opening 28.
Step 5, preparation before bushing press fitting
The third piston rod 411 drives the first ejector rod 42 and the second ejector rod 43 to synchronously move by the action of the pushing piece 40, the bush moves upwards under the action of the first ejector rod 42, the abutting part 3a on the lower side of the bush is extruded by the inner walls of the first limiting opening 28 and the second limiting opening 28 to be folded inwards, then the pushing piece 40 is reset, and the first ejector rod 42 is pulled out of the inner hole 2 a;
step 6, press fitting the bushing
Referring to fig. 11 and 12, the driving mechanism acts to apply force to the upper end surface of the bushing by using the punch 11, so that the bushing moves towards the mounting opening 4a, and since the lower end surfaces of the first clamping seat 26 and the second clamping seat 27 are attached to the upper end surface of the mounting opening 4a of the swing arm body 4, the abutting portion 3a directly enters the mounting opening 4a and is attached to the inner wall of the mounting opening 4a after coming out of the limiting opening 28 in the press mounting process until the bushing is completely press-mounted in the mounting opening 4 a.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (7)
1. A press-fitting device of an automotive bushing, comprising:
the clamp (20) comprises a first clamping seat (26), a second clamping seat (27) and a driving piece for driving the first clamping block and the second clamping seat (27) to move in opposite directions or in opposite directions, wherein a first limit notch (261) is formed in the first clamping seat (26), a second limit notch (271) is formed in the second clamping seat (27), and when the first clamping seat (26) and the second clamping seat (27) are combined with each other, the first limit notch (261) and the second limit notch (271) are communicated with each other to form a limit opening (28);
the first positioning seat (30) is positioned below the clamp (20) and comprises a first positioning boss (31), and the first positioning boss (31) is provided with a yielding port;
the pushing piece (40) is connected with the first positioning seat (30) and can move to the side far away from/close to the clamp (20) through the yielding port;
the driving mechanism comprises a punch (11), wherein the punch (11) is positioned above the clamp (20) and can move away from/close to one side of the clamp (20);
the press-fit device further comprises a limiting seat (50), the limiting seat (50) comprises two limiting baffles (51), a spacing area (52) is formed between the two limiting baffles (51), and the limiting area (52) is located above the formed limiting opening (28);
the press-fit device further comprises a base, the base comprises a bottom plate (12) and a side plate (13), the first positioning seat (30) is arranged on the base, an adjusting plate (14) is arranged on the side plate (13), and the clamp (20) is arranged on the adjusting plate (14).
2. The press-fitting device of an automobile bushing according to claim 1, wherein the driving member is a duplex cylinder (21), comprising a cylinder body, a first piston rod (22) and a second piston rod (23) which are connected to the cylinder body and can move in opposite directions, wherein one end of the first piston rod (22) is connected with a first mounting plate (24), the first end of the second piston rod (23) is connected with a second mounting plate (25), the first clamping seat (26) is arranged on the first mounting plate (24), and the second clamping seat (27) is arranged on the second mounting plate (25).
3. The press-fitting device of an automobile bushing according to claim 2, characterized in that the pushing member (40) comprises a pushing cylinder (41), the pushing cylinder (41) is provided with a third piston rod (411), the third piston rod (411) can be arranged in the yielding port in a penetrating way, and the end part of the third piston rod (411) is provided with a first ejector rod (42) and a second ejector rod (43) arranged in the first ejector rod (42).
4. A press-fitting device of an automotive bushing according to claim 3, characterized in that the driving mechanism is a hydraulic cylinder (70)/air cylinder/hydraulic machine (10).
5. The press-fitting device of an automotive bushing according to claim 4, further comprising a second positioning seat (60), wherein at least one second positioning boss (61) is provided on the second positioning seat (60).
6. A press-fitting method using the press-fitting device of an automobile bush according to claim 5, characterized by comprising the steps of:
step 1, positioning a swing arm body, namely placing one end of the swing arm body (4) on a first positioning seat (30), clamping a first positioning boss (31) into a mounting port (4 a), placing the other end of the swing arm body (4) on a second positioning seat (60), and clamping a second positioning boss (61) into the mounting port (4 a);
step 2, adjusting the position of the clamp, and moving the vertical height of the adjusting plate (14) on the side plate (13) to enable the lower end faces of the first clamping seat (26) and the second clamping seat (27) to be abutted against the upper end face of the mounting port (4 a);
step 3, positioning the bushing, enabling the second ejector rod (43) to extend out through the mounting opening (4 a) by the action of the pushing piece (40), aligning the inner hole (2 a) of the inner tube (2) of the bushing with the second ejector rod (43) and enabling the second ejector rod (43) to be clamped into the inner tube (2), and enabling the lower end face of the bushing to be abutted against the upper end face of the first ejector rod (42);
step 4, clamping the bushing, wherein the clamp (20) acts to enable the first clamping seat (26) and the second clamping seat (27) to move towards the outer tube (1) of the bushing in opposite directions until the outer tube (1) of the bushing is attached to the inner walls of the first limit notch and the second limit notch;
step 5, preparing before the bushing is pressed and assembled, enabling the pushing piece (40) to act so that the third piston rod (411) drives the first ejector rod (42) and the second ejector rod (43) to synchronously move, enabling the bushing to move upwards under the acting force of the first ejector rod (42), enabling the abutting part (3 a) on the lower side of the bushing to be extruded and folded inwards under the condition that the first limiting notch and the inner wall of the second limiting notch are pressed, and then enabling the pushing piece (40) to reset;
and 6, pressing the bushing, wherein the driving mechanism acts to apply force to the upper end surface of the bushing by using the punch (11) so that the bushing moves towards one side of the mounting opening (4 a) until the whole bushing is pressed into the mounting opening (4 a) to finish the pressing.
7. The press-fitting method according to claim 6, wherein the length of the second ejector rod (43) entering the inner hole (2 a) of the inner tube (2) in the step 3 is 0.5-0.7 of the entire height of the inner hole (2 a) of the inner tube (2).
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110340638A (en) * | 2019-07-18 | 2019-10-18 | 佛山科学技术学院 | A kind of self-action rubber bushing press-mounting machine |
| TW202130451A (en) * | 2020-02-07 | 2021-08-16 | 世祥汽材製造廠股份有限公司 | Control arm assembly machine and control arm assembly method including a processing table with a longitudinal pressing device on the upper side |
| CN115139069B (en) * | 2021-03-31 | 2023-12-22 | 中国航发商用航空发动机有限责任公司 | Muffler assembly apparatus and method |
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