A subframe pressing device

Abstract

The present invention relates to a subframe press-fitting device, which includes a frame, a lifting plate and a support plate are arranged inside the frame, and the positions of the subframe and the press-fitting device can be adjusted; a positioning component positions and supports the subframe, and a bushing press-fitting component presses the bushing; the measuring component includes a probe to detect the axis coordinate position of the press-fitting hole; a steel sleeve support component supports the steel sleeve to be press-fitted into the hole; a steel sleeve press-fitting component presses the steel sleeve into the press-fitting hole, wherein the bushing press-fitting component is installed on the lifting plate, and the positioning component, the measuring component, the steel sleeve support component and the steel sleeve press-fitting component are all installed on the support plate and can slide horizontally relative to the support plate; in the use of the present invention, through the primary clamping and positioning of the workpiece, not only can two bushings be pressed into the same hole from the upper and lower directions respectively, but also the press-fitting of two steel sleeves at different positions can be realized; at the same time, it has the characteristics of high automation, powerful functions, advanced technology, strong versatility, and safe and stable performance.

Description

Technical Field

[0001] The present invention relates to a press-fitting device, specifically a press-fitting device for a subframe. Background Art

[0002] During the use of an aluminum alloy subframe, it needs to be connected to an automotive chassis. In order to reduce vibration and noise, two different bushings need to be pressed into certain holes from the upper and lower directions respectively; at the same time, in order to facilitate screwing with other components, a steel sleeve with an internal thread needs to be press-fitted into certain holes. The subframe is a relatively large thin-walled part, and deformation is certain to occur during its production process. The bushings cannot be completely concentric with the holes to be press-fitted on the workpiece during the press-fitting process, which will cause phenomena such as the bushings being pressed off, damaged, and unqualified press-fitting dimensions. The traditional press-fitting method is as follows: after positioning the workpiece, the upper bushing is first pressed in, then the workpiece is flipped, and after secondary positioning, the lower bushing is pressed in; after the lower bushing is press-fitted, the workpiece is positioned again for the press-fitting of the steel sleeve. Multiple devices and multiple sets of tooling are required to meet the production needs, and the production efficiency is very low, and the labor intensity of the operating workers is very high; the device of the present invention can not only automatically press two bushings into the same hole from the upper and lower directions respectively through one-time clamping and positioning of the workpiece, but also realize the press-fitting of two steel sleeves at two different positions. Summary of the Invention

[0003] The purpose of the present invention is to provide a press-fitting device for a subframe, which can not only realize the pressing of two bushings into the same hole from the upper and lower directions respectively through one-time clamping and positioning of the workpiece during use, but also realize the press-fitting of two steel sleeves at two different positions.

[0004] In order to achieve the above purpose, the technical solution of the present invention is:

[0005] A press-fitting device for a subframe includes a frame, a positioning assembly, a bushing press-fitting assembly, a measuring assembly, a steel sleeve support assembly, and a steel sleeve press-fitting assembly

[0006] A lifting plate and a support plate are arranged inside the frame, and the lifting plate and the support plate adjust the positions of the subframe and the press-fitting device during positioning and press-fitting;

[0007] The positioning assembly includes a third support block, an expanding block, and a second positioning pin. The third support block is used to support the subframe, the expanding block is used to expand and tighten the main reference hole of the subframe, and the second positioning pin is inserted into the second reference hole of the subframe;

[0008] The bushing press-fitting assembly includes a floating mandrel and a pressure sleeve. The floating mandrel is installed on the support plate, and the lower bushing is connected to the top end. The pressure sleeve is installed on the lifting plate, and the upper bushing is installed in the inner hole of the pressure sleeve;

[0009] The measuring assembly includes a probe, and the probe is used to detect the axial coordinate position of the press-fitting hole;

[0010] The steel sleeve support assembly includes a first slider and a positioning pin. A vertical hole is opened at the top of the first slider, and a first positioning pin is installed in the hole to support the steel sleeve in the press-fitting hole;

[0011] The steel sleeve press-fitting assembly includes a second punch and a third punch. The second punch is used to press the first steel sleeve into the press-fitting hole, and the third punch is used to press the second steel sleeve into the press-fitting hole;

[0012] The bushing press-fitting assembly is installed on the lifting plate and can slide horizontally relative to the lifting plate. The positioning assembly, the measuring assembly, the steel sleeve support assembly, and the steel sleeve press-fitting assembly are all installed on the support plate and can slide horizontally relative to the support plate.

[0013] In some embodiments, the support plate includes a first bottom plate, a first top plate, and a first vertical plate; the lower fixing plate is fixed below the frame; the first sliding plate is fixed above the lower fixing plate through a first guide rail, the first bottom plate is fixed above the first sliding plate through a second guide rail, the first vertical plates are fixed on both sides above the first bottom plate, and the first top plate is fixed at the top of the first vertical plates; the positioning assembly, the measuring assembly, the steel sleeve support assembly, and the steel sleeve press-fitting assembly are all installed on the first top plate and can slide horizontally relative to the support plate.

[0014] In some embodiments, a fourth servo motor is fixed above the first bottom plate, and a first gear is fixed to the output end thereof; a first rack is fixed above the first sliding plate; the first gear meshes with the first rack; a tenth servo electric cylinder is fixed on one side above the lower fixing plate, and its output end is connected to the first sliding plate.

[0015] In some embodiments, a sixth servo electric cylinder is installed at the middle position at the top of the frame. The output end of the sixth servo electric cylinder is connected to a pressure sensor, and the pressure sensor is fixed above the lifting plate; a second guide sleeve is also fixed at the top of the frame. A second guide post passes through the second guide sleeve and is fixed above the lifting plate. There are four second guide sleeves, which are evenly distributed around the sixth servo electric cylinder. A second wire rope encoder is also fixed on one side of the sixth servo electric cylinder, and the output end of the second wire rope encoder is connected to the lifting plate.

[0016] In some embodiments, the steel sleeve press-fitting assembly further includes an eleventh guide rail. The fourth slide plate is installed below the lifting plate through the eleventh guide rail. The ninth servo electric cylinder is fixed on one side below the lifting plate, and its output end is connected to the fourth slide plate. One side below the fourth slide plate installs the third slide plate through the tenth guide rail, and the other side installs the fifth slide plate through the twelfth guide rail. The lower end of the third slide plate is fixed with a second pressing head, the lower end of the second pressing head is fixed with a first positioning column, a first magnet is sleeved outside the first positioning column, the lower end of the fifth slide plate is fixed with a third pressing head, the lower end of the third pressing head is fixed with a second positioning column, and a second magnet is sleeved outside the second positioning column.

[0017] In some embodiments, the steel sleeve press-fitting assembly further includes a seventh servo electric cylinder and an eighth servo electric cylinder. The seventh servo electric cylinder is fixed on one side below the lifting plate, and its output end is connected to the third slide plate. The eighth servo electric cylinder is fixed on the other side below the lifting plate, and its output end is connected to the fifth slide plate.

[0018] In some embodiments, the bushing press-fitting assembly further includes a fifth guide rail installed on the first top plate. The third bottom plate is installed on the fifth guide rail. Third vertical plates are provided on both sides of the third bottom plate. The third top plate is fixed at the top of the third vertical plates. The third bottom plate, the third vertical plates, and the third top plate are connected to form a cavity. The second servo motor is arranged in the cavity and fixed below the third top plate, and its output end is fixed with a third gear. The second moving plate is installed on the third top plate through the seventh guide rail. A third rack meshing with the third gear is fixed below the second moving plate. The top end of the second moving plate is fixedly connected to the second fixing seat. The second fixing seat has an opening, and a second end cap, a first sliding sleeve, and a second ball head are installed in the opening from the outside to the inside in sequence. The upper part of the first sliding sleeve has an opening, and the outer side of the floating core shaft is matched with the inner hole of the first sliding sleeve. The second set screw is fixed at the upper end of the first sliding sleeve, and its output end is connected to the floating core shaft. The fourth servo electric cylinder is fixed above the first top plate, and its output end is connected to the third vertical plate to drive the bushing press-fitting assembly to slide relative to the support plate.

[0019] In some embodiments, the upper end of the second ball head is spherical, and the lower end is flat. The lower end of the first sliding sleeve is spherical, and the upper end is flat. The lower spherical surface of the first sliding sleeve is matched with the upper spherical surface of the second ball head. The second end cap is annular, and the middle opening has a clearance fit with the outer circle of the first sliding sleeve. The outer side of the floating core shaft is cylindrical and has a chute on one side, and a counterbore is opened at the top, which is matched with the outer diameter of the inner tube of the lower bushing. The outer cylinder of the floating core shaft is matched with the inner hole at the upper end of the first sliding sleeve. The second set screw is fixed at the upper end of the first sliding sleeve, and its output end is connected to the chute of the floating core shaft. The third spring is installed in the hole of the first sliding sleeve and is placed below the floating core shaft.

[0020] In some embodiments, the bushing press-fitting assembly further includes a ninth guide rail installed below the lifting plate. A fourth bottom plate is installed on the ninth guide rail. Fourth vertical plates are provided on both sides of the fourth bottom plate, and a fourth top plate is fixed to the top ends of the fourth vertical plates. The fourth bottom plate, the fourth vertical plates, and the fourth top plate are connected to each other to form a cavity. A third servo motor is disposed in the cavity and fixed above the fourth top plate, and its output end is fixed with a fourth gear. A third fixed seat is installed on the fourth top plate through an eighth guide rail. The third fixed seat is fixed with a fourth rack meshing with the fourth gear. The third fixed seat is provided with a counterbore, and a third end cover, a first pressing head, and a third ball head are installed in the hole from outside to inside in sequence. A pressing sleeve is sleeved outside the first pressing head. A plurality of spring plungers are evenly installed on the outer circumference of the pressing sleeve in the circumferential direction. A third set screw is installed on the pressing sleeve, and its top end contacts the first pressing head. A fifth servo electric cylinder is fixed below the lifting plate, and its output end is connected to the fourth bottom plate to drive the bushing press-fitting assembly to slide relative to the lifting plate.

[0021] In some embodiments, the upper end of the third ball head is a plane, and the lower end is a spherical surface. The outer side of the first pressing head is cylindrical and has a chute on one side. The upper end is a spherical surface, and the lower end is a plane and is provided with a counterbore. The inner diameter of the counterbore is the same as the outer diameter of the inner tube of the upper bushing. The lower end surface of the first pressing head fits with the upper end surface of the outer tube of the upper bushing, and the upper end surface contacts the spherical surface at the lower end of the third ball head. The third end cover is annular, and the middle hole has a clearance fit with the outer circle of the first pressing head. The top ends of the spring plungers protrude from the cylindrical surface of the inner hole of the pressing sleeve and contact the outer circle of the upper bushing. The third set screw is installed on the pressing sleeve, and its top end cooperates with the chute of the first pressing head. A fourth spring is sleeved outside the first pressing head and is placed below the third end cover.

[0022] In some embodiments, the measuring assembly further includes a second bottom plate. The second bottom plate is installed above the first top plate through a fifth guide rail. Second vertical plates are provided on both sides of the second bottom plate, and a second top plate is fixed to the top ends of the second vertical plates. The second bottom plate, the second vertical plates, and the second top plate are connected to each other to form a cavity. A first servo motor is disposed in the cavity and fixed below the second top plate, and its output end is fixed with a second gear. A first moving plate is installed on the second top plate through a sixth guide rail. A third wire encoder is fixed to one side of the second top plate, and its output end is connected to the first moving plate. A second rack meshing with the second gear is fixed to the lower end of the first moving plate. A floating head is fixed on the first moving plate, and a measuring needle is installed above the floating head. A third servo electric cylinder is fixed above the first top plate, and its output end is connected to the second bottom plate to drive the measuring assembly to slide relative to the support plate. A first wire encoder is placed at the lower end of the third servo electric cylinder, and its output end is connected to the second bottom plate.

[0023] In some embodiments, the steel sleeve support assembly further includes a second sliding plate, which is installed above the first top plate through a third guide rail; an upper end of a first slider is provided with a hole and is fixed above the second sliding plate; a first inclined block is installed in a transverse hole of the first slider; the first inclined block is cylindrical, with one side being a conical surface and the other side being a flat surface; a second servo electric cylinder is fixed above the first slider, and an output end thereof is connected to the flat surface side of the first inclined block; a first positioning pin is installed in a longitudinal hole of the first slider, with a lower end being a conical surface and an upper end being a cylindrical surface, and a conical surface of the first positioning pin is matched with a conical surface of the first inclined block; a first spring is installed outside the cylindrical surface of the first positioning pin and is placed in a vertically oriented hole on the first slider; a setscrew is installed below a hole of the first slider, and a first servo electric cylinder is fixed on one side above the first top plate, and an output end thereof is connected to the first slider to drive the steel sleeve support assembly to slide relative to the support plate.

[0024] In some embodiments, the steel sleeve support assemblies are two sets of assemblies that are symmetric left and right.

[0025] In some embodiments, the positioning assembly further includes a first guide sleeve fixed on the first top plate and a first guide post that cooperates with it. The first guide post is connected to a first lower lifting plate. A first air cylinder is fixed below the first top plate, and an output end thereof is connected to the first lower lifting plate; a first fixed seat is installed above the first lower lifting plate through a fourth guide rail; an upper end of a first ball head is a spherical surface and a lower end is a flat surface, and it is installed in a hole above the first fixed seat; a lower end of a first support block is a spherical surface and an upper end is a flat surface; a lower end of the first support block contacts an upper end of the first ball head; a first end cover is fixed on an upper end of the first fixed seat, and a second positioning pin is matched with an inner hole above the first support block; a first set screw is fixed above the first support block, and a top end thereof extends into a chute on the second positioning pin; a second spring is installed in a hole of the first support block and is placed below the second positioning pin.

[0026] In some embodiments, the positioning assembly further includes a third guide sleeve fixed on the first top plate and a third guide post that cooperates with it. The third guide post is connected to a fourth fixed seat. A second air cylinder is fixed below the first top plate, and an output end thereof is connected to the fourth fixed seat; a fourth ball head is installed in a counterbore of the fourth fixed seat, with an upper end being a spherical surface and a lower end being a flat surface; an upper end of a second support block is a flat surface and a lower end is a spherical surface; a lower end of the second support block contacts an upper end of the fourth ball head; a fourth end cover is installed on a top end of the fourth fixed seat, and a chuck is fixed on a top end of the second support block; a plurality of uniformly distributed T-shaped grooves are formed in a circumferential direction of the chuck; a swaging block is installed in the T-shaped groove, an upper part of the swaging block is an arc surface, a lower part is a T-shaped structure, and an inner side is a conical surface; a fifth spring is installed on one side of the swaging block; the other side of the fifth spring contacts a top block; the top block is fixed on the chuck, and a cross plate is fixed in an inner hole of the second support block; a third air cylinder is fixed below the cross plate, and an output end thereof is connected to a tapered head; an upper part of the tapered head contacts the swaging block; it is used to push the swaging blocks to expand and tighten synchronously towards the outside.

[0027] In some embodiments, the positioning assembly further includes a fourth guide sleeve fixed on the first top plate and a fourth guide post cooperating therewith. The fourth guide post is connected to the second lower lifting plate. The fourth air cylinder is fixed below the first top plate, and its output end is connected to the second lower lifting plate. A counterbore is formed in the upper part of the fifth fixing seat, and it is installed above the second lower lifting plate through a thirteenth guide rail. A fifth ball head is installed in the counterbore of the fifth fixing seat, with a spherical upper end and a flat lower end. The lower end of the third support block is spherical and the upper end is flat. The lower end of the third support block contacts the upper end of the fifth ball head. The fifth end cover is fixed on the upper end of the fifth fixing seat.

[0028] In some embodiments, the positioning assembly is two sets of symmetrically arranged components on the left and right.

[0029] Compared with the prior art, the advantages of the present invention are as follows: In use, through the primary clamping and positioning of the workpiece, the present invention can not only press two bushings into the same hole from the upper and lower directions respectively, but also realize the press-fitting of two steel sleeves at different positions. At the same time, it has the characteristics of high automation, powerful functions, advanced technology, strong versatility, and safe and stable performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the front view of a subframe press-fitting device of the present invention.

[0031] Figure 2 is the right view of a subframe press-fitting device of the present invention.

[0032] Figure 3 is the left view of a subframe press-fitting device of the present invention.

[0033] Figure 4 is the front view of the steel sleeve support assembly of a subframe press-fitting device of the present invention.

[0034] Figure 5 is the front view of a partial positioning assembly of a subframe press-fitting device of the present invention.

[0035] Figure 6 is the front view of the measurement assembly of a subframe press-fitting device of the present invention.

[0036] Figure 7 is the front view of the lower half of the bushing press-fitting assembly of a subframe press-fitting device of the present invention.

[0037] Figure 8 is the front view of the upper half of the bushing press-fitting assembly of a subframe press-fitting device of the present invention.

[0038] Figure 9 is the front view of the steel sleeve press-fitting assembly of a subframe press-fitting device of the present invention.

[0039] Figure 10It is the front view of a partial positioning component of a subframe pressing device according to the present invention.

[0040] Figure 11 It is the front view of a partial positioning component of a subframe pressing device according to the present invention.

[0041] In the figure, 1 - frame, 2 - first gear, 3 - first rack, 4 - first slide plate, 5 - first guide rail, 6 - second guide rail, 7 - first bottom plate, 8 - first top plate, 9 - first vertical plate, 10 - second slide plate, 11 - first servo electric cylinder, 12 - first slider, 13 - second servo electric cylinder, 14 - first inclined block, 15 - first positioning pin, 16 - first spring, 17 - setscrew, 18 - third guide rail, 19 - first cylinder, 20 - first guide post, 21 - first guide bushing, 22 - first lower lifting plate, 23 - fourth guide rail, 24 - first fixed seat, 25 - first ball head, 26 - first support block, 27 - first end cover, 28 - second spring, 29 - first set screw, 30 - second positioning pin, 31 - fifth guide rail, 32 - second bottom plate, 33 - first wire rope encoder, 34 - third servo electric cylinder, 35 - second vertical plate, 36 - first servo motor, 37 - second top plate, 38 - sixth guide rail, 39 - second rack, 40 - second gear, 41 - first moving plate, 42 - probe, 43 - floating head, 44 - third bottom plate, 45 - second servo motor, 46 - third vertical plate, 47 - third top plate, 48 - seventh guide rail, 49 - second moving plate, 50 - second fixed seat, 51 - second ball head, 52 - first sliding sleeve, 53 - second end cover, 54 - third spring, 55 - second set screw, 56 - floating mandrel, 57 - third gear, 58 - third rack, 59 - fourth servo electric cylinder, 60 - spring plunger, 61 - third set screw, 62 - bushing, 63 - first pressure head, 64 - fourth spring, 65 - third end cover, 66 - third ball head, 67 - third fixed seat, 68 - fourth rack, 69 - fourth gear, 70 - eighth guide rail, 71 - fourth top plate, 72 - third servo motor, 73 - fifth servo electric cylinder, 74 - fourth vertical plate, 75 - fourth bottom plate, 76 - ninth guide rail, 77 - lifting plate, 78 - second guide post, 79 - second guide bushing, 80 - second wire rope encoder, 81 - sixth servo electric cylinder, 82 - pressure sensor, 83 - first positioning post, 84 - first magnet, 85 - second pressure head, 86 - third slide plate, 87 - tenth guide rail, 88 - seventh servo electric cylinder, 89 - fourth slide plate, 90 - eleventh guide rail, 91 - eighth servo electric cylinder, 92 - twelfth guide rail, 93 - fifth slide plate, 94 - third pressure head, 95 - second magnet, 96 - second positioning post, 97 - ninth servo electric cylinder, 98 - second cylinder, 99 - third guide post, 100 - third guide bushing, 101 - fourth fixed seat, 102 - fourth ball head, 103 - second support block, 104 - fourth end cover, 105 - third cylinder, 106 - cross plate, 107 - taper head, 108 - chuck, 109 - top block, 110 - fifth spring, 111 - expanding block, 112 - fourth servo motor, 113 - fourth cylinder, 114 - fourth guide post, 115 - fourth guide bushing, 116 - second lower lifting plate, 117 - thirteenth guide rail118 - Fifth fixed seat, 119 - Fifth ball head, 120 - Fifth end cap, 121 - Third support block, 122 - Tenth servo electric cylinder, 123 - Lower fixed plate, 124 - Third wire encoder, A - Upper bushing, B - Lower bushing, C - First steel sleeve, D - Second steel sleeve. Detailed implementation manners

[0042] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0043] Next, the technical solutions of the present invention will be clearly and completely described with reference to the accompanying drawings and in combination with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0044] Next, refer to the attached Figures 1-11 And describe the subframe pressing equipment of the embodiment of the present invention in combination with the embodiments.

[0045] A subframe pressing equipment includes a frame 1, a positioning component, a bushing pressing component, a measuring component, a steel sleeve supporting component, and a steel sleeve pressing component

[0046] A lifting plate and a supporting plate are arranged in the frame 1, and the lifting plate and the supporting plate adjust the positions of the subframe and the pressing device during positioning and pressing;

[0047] The positioning component includes a third support block 121, a expanding block 111, and a second positioning pin 30. The third support block 121 is used to support the subframe, the expanding block 111 is used to expand and tighten the main reference hole of the subframe, and the second positioning pin 30 is inserted into the second reference hole of the subframe;

[0048] The bushing pressing component includes a floating mandrel 56 and a pressing sleeve 62. The floating mandrel 56 is installed on the supporting plate, and the top end is connected to the lower bushing. The pressing sleeve 62 is installed on the lifting plate, and the upper bushing is installed in the inner hole of the pressing sleeve 62;

[0049] The measuring component includes a probe 42, and the probe 42 is used to detect the axis coordinate position of the pressing hole;

[0050] The steel sleeve supporting component includes a first slider 12 and a positioning pin. The top end of the first slider 12 is vertically opened with a hole, and the first positioning pin 15 is installed in the hole, which is used to support the hole where the steel sleeve is to be pressed;

[0051] The steel sleeve pressing component includes a second pressing head 85 and a third pressing head 94. The second pressing head 85 is used to press the first steel sleeve into the pressing hole, and the third pressing head 94 is used to press the second steel sleeve into the pressing hole;

[0052] The bushing press-fitting assembly is installed on the lifting plate and can slide horizontally relative to the lifting plate. The positioning assembly, the measuring assembly, the steel sleeve support assembly, and the steel sleeve press-fitting assembly are all installed on the support plate and can slide horizontally relative to the support plate.

[0053] As Figure 1 shown, four second guide sleeves 79 are fixed to the top of the frame 1; four second guide posts 78 cooperating with the four second guide sleeves 79 are fixed above the lifting plate 77; the sixth servo electric cylinder 81 is fixed at the middle position of the top of the frame 1, and its output end is connected to the upper end of the pressure sensor 82; the lower end of the pressure sensor 82 is fixed at the middle position above the lifting plate 77; the second wire encoder 80 is fixed to the top of the frame 1, placed on one side of the sixth servo electric cylinder 81, and its output end is connected to the upper part of the lifting plate 77.

[0054] From Figure 1-2 shown, the lower fixing plate 123 is fixed to the lower part of the frame 1; the first sliding plate 4 is fixed above the lower fixing plate 123 through the first guide rail 5; the first bottom plate 7 is fixed above the first sliding plate 4 through the second guide rail 6; the first vertical plates 9 are fixed on both sides above the first bottom plate 7; the first top plate 8 is fixed to the top of the first vertical plates 9; the fourth servo motor 112 is fixed above the first bottom plate 7, and its output end is fixed with a first gear 2; the first rack 3 is fixed above the first sliding plate 4; the first gear 2 meshes with the first rack 3; the tenth servo electric cylinder 122 is fixed on one side above the lower fixing plate 123, and its output end is connected to the first sliding plate 4.

[0055] As Figure 9 shown, the steel sleeve press-fitting assembly includes: a first positioning post 83 is fixed to the lower end of the second punch 85; the inner hole of the first magnet 84 is fitted with the outer circle of the first positioning post 83 and is placed at the lower end of the second punch 85; the second punch 85 is fixed to the lower end of the third sliding plate 86; the third sliding plate 86 is installed on one side below the fourth sliding plate 89 through the tenth guide rail 87; the fourth sliding plate 89 is installed below the lifting plate 77 through the eleventh guide rail 90; the seventh servo electric cylinder 88 is fixed on one side below the lifting plate 77, and its output end is connected to the third sliding plate 86; the fifth sliding plate 93 is installed on the other side below the fourth sliding plate 89 through the twelfth guide rail 92; the eighth servo electric cylinder 91 is fixed on the other side below the lifting plate 77, and its output end is connected to the fifth sliding plate 93; the third punch 94 is fixed below the fifth sliding plate 93; the second positioning post 96 is fixed below the third punch 94; the second magnet 95 is fixed to the lower end of the third punch 94, and its inner hole is fitted with the outer circle of the second positioning post 96; the ninth servo electric cylinder 97 is fixed on one side below the lifting plate 77, and its output end is connected to the fourth sliding plate 89.

[0056] As Figure 7As shown, the bushing press-fitting assembly includes: The third bottom plate 44 is installed above the first top plate 8 through the fifth guide rail 31; The third vertical plate 46 is fixed above the third bottom plate 44; The third top plate 47 is fixed at the top of the third vertical plate 46; The second servo motor 45 is fixed below the third top plate 47, and a third gear 57 is fixed to its output end; The second moving plate 49 is installed above the third top plate 47 through the seventh guide rail 48; The third rack 58 is fixed below the second moving plate 49; The third gear 57 meshes with the third rack 58; The second fixed seat 50 is fixed at the top of the second moving plate 49; The upper end of the second ball head 51 is spherical and the lower end is flat, and it is installed in the hole above the second fixed seat 50; The lower end of the first sliding sleeve 52 is spherical and the upper end is flat; The spherical surface at the lower end of the first sliding sleeve 52 cooperates with the spherical surface at the upper end of the second ball head 51; The second end cover 53 is fixed at the upper end of the second fixed seat 50, and the hole in the middle has a clearance fit with the outer circle of the first sliding sleeve 52 to adapt to the deformation of the workpiece and ensure that the upper end surface of the first sliding sleeve 52 can be completely attached to the lower end surface of the press-fitting hole of the workpiece; The outer side of the floating mandrel 56 is cylindrical, and there is a counterbore at the top, which is matched with the outer diameter of the inner tube of the lower bushing to realize the radial positioning of the lower bushing; The top of the floating mandrel 56 is attached to the lower end surface of the outer tube of the lower bushing to realize the axial positioning of the lower bushing; The cylindrical part on the outer side of the floating mandrel 56 is matched with the inner hole at the upper end of the first sliding sleeve 52; The second set screw 55 is fixed at the upper end of the first sliding sleeve 52, and its output end cooperates with the chute on the floating mandrel 56; The third spring 54 is installed in the hole above the first sliding sleeve 52 and is placed below the floating mandrel 56; The fourth servo electric cylinder 59 is fixed above the first top plate 8, and its output end is connected to one side of the third vertical plate 46.

[0057] As Figure 8As shown in the figure, the bushing press-fitting assembly further includes: a plurality of spring plungers 60 are evenly installed in the circumferential direction below the pressing sleeve 62, and the floating heads at their tops protrude from the inner hole cylindrical surface of the pressing sleeve 62. The diameter of the circle formed by the floating heads at the tops of the plurality of spring plungers 60 is smaller than the inner hole diameter of the pressing sleeve 62; the floating heads at the tops of the plurality of spring plungers 60 clamp the outer circle of the upper bushing to achieve its radial positioning; the inner hole of the pressing sleeve 62 is matched with the outer circle of the first pressing head 63; the third set screw 61 is installed on the pressing sleeve 62, and its top is matched with the chute on the first pressing head 63; the upper end of the first pressing head 63 is spherical, the lower end is flat, and has a counterbore. The inner diameter of the counterbore is matched with the outer circle of the inner tube of the upper bushing; the lower end surface of the first pressing head 63 is attached to the upper end surface of the outer tube of the upper bushing to achieve the axial positioning of the upper bushing; the third ball head 66 is installed in the counterbore below the third fixed seat 67, its upper end is flat, and the lower end is spherical; the spherical surface at the lower end of the third ball head 66 contacts the spherical surface at the upper end of the first pressing head 63; the third end cover 65 is fixed to the lower end of the third fixed seat 67; the inner hole in the middle of the third end cover 65 has a clearance fit with the outer circle of the first pressing head 63 to adapt to the deformation of the workpiece and ensure that the lower end surface of the pressing sleeve 62 can be completely attached to the upper end surface of the workpiece pressing hole during press-fitting; the fourth spring 64 is installed outside the first pressing head 63 and is placed below the third end cover 65; the third fixed seat 67 is installed below the fourth top plate 71 through the eighth guide rail 70; the fourth rack 68 is fixed above the third fixed seat 67; the third servo motor 72 is fixed above the fourth top plate 71, and its output end is fixed with a fourth gear 69; the fourth gear 69 meshes with the fourth rack 68; the fourth vertical plate 74 is fixed between the fourth top plate 71 and the fourth bottom plate 75; the fourth bottom plate 75 is installed below the lifting plate 77 through the ninth guide rail 76; the fifth servo electric cylinder 73 is fixed on one side below the lifting plate 77, and its output end is connected to the fourth bottom plate 75.

[0058] As Figure 6As shown in the figure, the measuring component includes: The second bottom plate 32 is installed above the first top plate 8 through the fifth guide rail 31; The second vertical plate 35 is fixed above the second bottom plate 32; The second top plate 37 is fixed above the second vertical plate 35; The third servo electric cylinder 34 is fixed above the first top plate 8, and its output end is connected to one side of the second bottom plate 32; The first wire-wound encoder 33 is fixed above the first top plate 8, placed at the lower end of the third servo electric cylinder 34, and its output end is connected to the second bottom plate 32; The first servo motor 36 is fixed below the second top plate 37; The second gear 40 is fixed to the output end of the first servo motor 36; The first moving plate 41 is installed above the second top plate 37 through the sixth guide rail 38; The second rack 39 is fixed to the lower end of the first moving plate 41; The second rack 39 meshes with the second gear 40; The third wire-wound encoder 124 is fixed to one side of the second top plate 37, and its output end is connected to the first moving plate 41; The floating head 43 is fixed above the first moving plate 41; The probe 42 is installed above the floating head 43.

[0059] As Figure 4 As shown in the figure, the steel sleeve support and positioning component includes: The second slide plate 10 is installed on one side above the first top plate 8 through the third guide rail 18; The upper end of the first slider is provided with a hole 12 and is fixed above the second slide plate 10; The first servo electric cylinder 11 is fixed on one side above the first top plate 8, and its output end is connected to the first slider 12; The first inclined block 14 is installed in the horizontal hole above the first slider 12; The outer shape of the first inclined block 14 is cylindrical, with a conical surface on one side and a flat surface on the other side; The second servo electric cylinder 13 is fixed on one side above the first slider 12, and its output end is connected to the flat surface side of the first inclined block 14; The lower end of the first positioning pin 15 is a conical surface, and the upper end is a cylindrical surface. Its cylindrical surface is matched with the vertical hole on the first slider 12, and its conical surface is matched with the conical surface of the first inclined block 14; The first spring 16 is installed outside the cylindrical surface of the first positioning pin 15 and is placed in the vertical hole on the first slider 12; The setscrew 17 is installed below the vertical hole on the first slider 12; This equipment includes two sets of symmetrical steel sleeve support and positioning components on the left and right.

[0060] As Figure 5As shown in the figure, the positioning component includes: four first guide sleeves 21 are fixed on the first top plate 8; four first guide posts 20 that cooperate with the four first guide sleeves 21 are fixed below the first lower lifting plate 22; the first cylinder 19 is fixed below the first top plate 8, and its output end is connected to the lower part of the first lower lifting plate 22; the first fixing seat 24 is installed above the first lower lifting plate 22 through the fourth guide rail 23; the upper end of the first ball head 25 is spherical and the lower end is flat, and it is installed in the hole above the first fixing seat 24; the lower end of the first support block 26 is spherical and the upper end is flat; the spherical surface at the lower end of the first support block 26 cooperates with the spherical surface at the upper end of the first ball head 25; the first end cover 27 is fixed to the upper end of the first fixing seat 24, and the hole in the middle thereof has a clearance fit with the outer circle of the first support block 26 to adapt to the overall deformation of the workpiece and ensure that the upper end surface of the first support block 26 can be completely fitted with the corresponding positioning surface of the workpiece; the outer circle of the second positioning pin 30 cooperates with the inner hole above the first support block 26; the first set screw 29 is fixed above the first support block 26, and its top end cooperates with the chute on the second positioning pin 30; the second spring 28 is installed in the hole above the first support block 26 and is placed below the second positioning pin 30.

[0061] As Figure 10 shown in the figure, the positioning component further includes: four third guide sleeves 100 are fixed on the first top plate 8; four third guide posts 99 that cooperate with the four third guide sleeves 100 are fixed below the fourth fixing seat 101; the second cylinder 98 is fixed below the first top plate 8, and its output end is connected to the lower part of the fourth fixing seat 101; the fourth ball head 102 is installed in the counterbore at the upper end of the fourth fixing seat 101; the upper end of the fourth ball head 102 is spherical and the lower end is flat; the upper end of the second support block 103 is flat and the lower end is spherical; the spherical surface at the lower end of the second support block 103 contacts the spherical surface at the upper end of the fourth ball head 102; the fourth end cover 104 is installed at the top of the fourth fixing seat 101, and the hole in the middle thereof has a clearance fit with the outer circle of the second support block 103; the chuck 108 is fixed to the top of the second support block 103; a number of uniformly distributed T-shaped grooves are formed in the circumferential direction of the chuck 108; the outer side above the expansion block 111 is an arc surface, the lower part is a T-shaped structure, and the inner side of the lower part is a conical surface; a number of expansion blocks 111 are installed in the T-shaped grooves on the chuck 108; the fifth springs 110 corresponding to the number of T-shaped grooves of the chuck 108 are installed in the T-shaped grooves on the chuck 108 and are placed on one side of the expansion block 111; the top block 109 is fixed on the chuck 108 and is placed on one side of the fifth spring 110; the cross plate 106 is fixed in the inner hole of the second support block 103; the third cylinder 105 is fixed below the cross plate 106, and its output end is fixed with a tapered head 107; the conical surface above the tapered head 107 cooperates with the conical surfaces on the inner sides of the lower parts of the respective expansion blocks 111; when the tapered head 107 moves upward, the respective expansion blocks 111 move synchronously outward to realize the cooperation between the expansion blocks 111 and the positioning holes of the workpiece.

[0062] AsFigure 11 As shown, the positioning component further includes: four fourth guide sleeves 115 are fixed on the first top plate 8; four fourth guide posts 114 cooperating with the four fourth guide sleeves 115 are fixed below the second lower lifting plate 116; a fourth cylinder 113 is fixed below the first top plate 8, and its output end is connected to the lower part of the second lower lifting plate 116; a fifth fixing seat 118 is installed above the second lower lifting plate 116 through a thirteenth guide rail 117; a fifth ball head 119 is installed in a counterbore above the fifth fixing seat 118; the upper end of the fifth ball head 119 is spherical and the lower end is flat; the lower end of the third support block 121 is spherical and the upper end is flat; the spherical surface at the lower end of the third support block 121 cooperates with the spherical surface at the upper end of the fifth ball head 119; a fifth end cover 120 is fixed at the upper end of the fifth fixing seat 118, and the hole in the middle thereof has a clearance fit with the outer circle of the third support block 121 to adapt to the overall deformation of the workpiece and ensure that the upper end surface of the third support block 121 can be completely fitted with the corresponding positioning surface of the workpiece; this equipment includes two sets of workpiece third positioning components.

[0063] During the working process, the first cylinder 19 raises the first support block 26 through the first guide post 20 and the first guide sleeve 21; the second cylinder 98 raises the chuck 108 through the third guide post 99 and the third guide sleeve 100; the fourth cylinder 113 raises the two third support blocks 121 through the fourth guide post 114 and the fourth guide sleeve 115; the four positioning reference planes on the subframe workpiece are respectively and correspondingly fitted with the top of the first support block 26, the top of the chuck 108, and the tops of the two third support blocks 121 to achieve the axial positioning of the workpiece; at this time, the expanding blocks 111 are inserted into the main reference holes on the workpiece, and the third cylinder 105 moves the tapered head 107 upward. Through the cooperation between the tapered head 107 and the inclined surface at the lower inner side of the expanding blocks 111, each expanding block 111 moves outward synchronously to tighten the main reference holes of the workpiece and achieve the radial positioning of the workpiece; at the same time, the second positioning pin 30 is inserted into the second reference hole of the workpiece to achieve the circumferential positioning of the workpiece; in order to avoid the center distance deviation of the two reference holes caused by the deformation of the workpiece, the second positioning pin 30 can be translated and adjusted through the fourth guide rail 23.

[0064] After the workpiece positioning is completed, due to the deformation of the workpiece, it is necessary to detect the actual position of the axis of the press-fitting hole before press-fitting; the third servo electric cylinder 34 moves the probe 42 in the X direction through the fifth guide rail 31; the first wire-wound encoder 33 can measure the actual displacement value in the X direction; the first servo motor 36 moves the probe 42 in the Y direction through the second gear 40, the second rack 39, and the sixth guide rail 38; the third wire-wound encoder 124 can measure the actual displacement value in the Y direction; during actual measurement, the probe 42 needs to evenly collect no less than 3 points within the circumferential direction of the inner wall of the hole to be press-fitted. Through the actual X and Y values of each measured point, the actual coordinate position of the axis of the hole to be press-fitted can be calculated.

[0065] Place the lower bushing B on the top of the floating mandrel 56. The fourth servo electric cylinder 59 can adjust the position of the lower bushing B in the X direction through the fifth guide rail 31 to make it consistent with the X coordinate value of the actual axis position of the hole to be press-fitted on the workpiece. The second servo motor 45 can adjust the position of the lower bushing B in the Y direction through the third gear 57, the third rack 58 and the seventh guide rail 48 to make it consistent with the Y coordinate value of the actual axis position of the hole to be press-fitted on the workpiece.

[0066] At the same time, the fifth servo electric cylinder 73 can adjust the position of the pressing sleeve 62 in the X direction through the ninth guide rail 76 to make it consistent with the X coordinate value of the actual axis position of the hole to be press-fitted on the workpiece. The third servo motor 72 can adjust the position of the pressing sleeve 62 in the Y direction through the fourth gear 69, the fourth rack 68 and the eighth guide rail 70 to make it consistent with the Y coordinate value of the actual axis position of the hole to be press-fitted on the workpiece.

[0067] After the positions of the pressing sleeve 62 and the lower bushing B are adjusted, the sixth servo electric cylinder 81 makes the pressing sleeve 62 move downward through the second guide post 78 and the second guide sleeve 79. The lower end face of the pressing sleeve 62 first contacts the upper end face of the hole to be press-fitted on the workpiece. Through the cooperation between the spherical surface at the top of the first punch 63 and the third ball head 66, the yaw angle of the pressing sleeve 62 in the vertical direction can be adjusted within a certain range to adapt to the situation that the upper end face of the hole to be press-fitted is not completely horizontal due to workpiece deformation. After the pressing sleeve 62 contacts the upper end face of the hole to be press-fitted on the workpiece, the pressing sleeve 62 continues to move downward. After its top is in full contact with the lower end of the third end cover 65, the pressing sleeve 62 presses the workpiece downward. At the same time, the first air cylinder 19, the second air cylinder 98 and the two fourth air cylinders 113 no longer apply force, so that the lower bushing B is pressed into the hole to be press-fitted on the workpiece. When the lower end face of the hole to be press-fitted on the workpiece is in full contact with the top of the first sliding sleeve 52, the pressing of the lower bushing B is completed. The actual pressing force value can be obtained through the pressure sensor 82, and the actual displacement of the workpiece moving downward can be obtained through the second wire-pulling encoder 80.

[0068] The sixth servo electric cylinder 81 makes the pressing sleeve 62 move upward through the second guide post 78 and the second guide sleeve 79, and installs the upper bushing A into the inner hole of the pressing sleeve 62. The sixth servo electric cylinder 81 makes the pressing sleeve 62 move downward again through the second guide post 78 and the second guide sleeve 79, and presses the upper bushing A into the hole to be press-fitted on the workpiece. When the lower end face of the pressing sleeve 62 is in full contact with the upper end face of the hole to be press-fitted on the workpiece, the pressing of the upper bushing A is completed. The actual pressing force value can be obtained through the pressure sensor 82, and the actual displacement of the workpiece moving downward can be obtained through the second wire-pulling encoder 80.

[0069] After the upper and lower bushings are press-fitted, the first cylinder 19, the second cylinder 98, and the two fourth cylinders 113 lift the workpiece to the initial position again. The third cylinder 105 moves the taper head 107 downward, and each expanding block 111 no longer tightens the main reference hole of the workpiece. At this time, the first servo electric cylinder 11 moves the first positioning pin 15 to the lower part of the hole where the steel sleeve is press-fitted through the third guide rail 18. The second servo electric cylinder 13 moves the first inclined block 14 to the right. Through the cooperation between the first inclined block 14 and the lower inclined surface of the first positioning pin 15, the first positioning pin 15 can move upward and be inserted into the hole where the steel sleeve is press-fitted to achieve radial positioning of the workpiece. The first cylinder 19, the second cylinder 98, and the two fourth cylinders 113 move downward to make the upper end surface of the first slider 12 fit with the lower end surface of the hole where the steel sleeve is press-fitted to achieve axial positioning of the workpiece. The tenth servo electric cylinder 122 moves the hole where the steel sleeve is press-fitted back and forth through the first guide rail 5. The fourth servo motor 112 moves the hole where the steel sleeve is press-fitted horizontally through the second guide rail 6, the first gear 2, and the first rack 3. First, the hole where the first steel sleeve is press-fitted is positioned below the sixth servo electric cylinder 81 through back-and-forth and horizontal movement. Then, the first steel sleeve C is installed below the first magnet 84, and the second steel sleeve D is installed below the second magnet 95. The ninth servo electric cylinder 97 adjusts the horizontal position of the second press head 85 through the eleventh guide rail 90. The seventh servo electric cylinder 88 adjusts the back-and-forth position of the second press head 85 through the tenth guide rail 87. Through the adjustment of the horizontal and back-and-forth positions, the second press head 85 is positioned below the sixth servo electric cylinder 81. The sixth servo electric cylinder 81 moves the second press head 85 downward through the second guide post 78 and the second guide sleeve 79 to press the first steel sleeve C into the hole where the first steel sleeve is press-fitted. After adjusting the position of the hole where the second steel sleeve is press-fitted and the third press head 94, the second steel sleeve D can be pressed into the hole where the second steel sleeve is press-fitted. The actual press-in force value can be obtained through the pressure sensor 82, and the actual displacement of the steel sleeve moving downward can be obtained through the second wire-wound encoder 80.

[0070] Compared with the prior art, the advantages of the present invention are as follows: In use, through the primary clamping and positioning of the workpiece, the present invention can not only press two bushings into the same hole from the upper and lower directions respectively, but also press two steel sleeves at different positions. At the same time, it has the characteristics of high automation, powerful functions, advanced technology, strong versatility, and safe and stable performance.

[0071] It should be noted that the terms "first", "second", "third", "fourth", etc. in the description, claims and drawings of this application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0072] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in connection with the embodiments can be included in at least one embodiment of the application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive of other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

Claims

1. A subframe pressing device, characterized in that: It includes a frame (1), a positioning component, a bushing pressing component, a measuring component, a steel sleeve supporting component, and a steel sleeve pressing component A lifting plate and a supporting plate are arranged inside the frame (1), and the lifting plate and the supporting plate adjust the positions of the subframe and the pressing device during positioning and pressing The positioning component includes a third support block (121), an expanding block (111), and a second positioning pin (30). The third support block (121) is used to support the subframe, the expanding block (111) is used to tighten the main reference hole of the subframe, and the second positioning pin (30) is inserted into the second reference hole of the subframe The bushing pressing component includes a floating mandrel (56) and a pressing sleeve (62). The floating mandrel (56) is installed on the supporting plate, and its top is connected to the lower bushing. The pressing sleeve (62) is installed on the lifting plate, and the upper bushing is installed in the inner hole of the pressing sleeve (62) The measuring component includes a probe (42), and the probe (42) is used to detect the axis coordinate position of the pressing hole The steel sleeve supporting component includes a first slider (12) and a positioning pin. A vertical hole is opened at the top of the first slider (12), and a first positioning pin (15) is installed in the hole to support the hole where the steel sleeve is to be pressed The steel sleeve pressing component includes a second punch (85) and a third punch (94). The second punch (85) is used to press the first steel sleeve into the pressing hole, and the third punch (94) is used to press the second steel sleeve into the pressing hole The bushing pressing component is installed on the lifting plate and can slide horizontally relative to the lifting plate. The positioning component, the measuring component, the steel sleeve supporting component, and the steel sleeve pressing component are all installed on the supporting plate and can slide horizontally relative to the supporting plate The supporting plate includes a first bottom plate (7), a first top plate (8), and a first vertical plate (9); a lower fixing plate (123) is fixed below the frame (1); a first sliding plate (4) is fixed above the lower fixing plate (123) through a first guide rail (5). The first bottom plate (7) is fixed above the first sliding plate (4) through a second guide rail (6). The first vertical plate (9) is fixed on both sides above the first bottom plate (7), and the first top plate (8) is fixed at the top of the first vertical plate (9). The positioning component, the measuring component, the steel sleeve supporting component, and the steel sleeve pressing component are all installed on the first top plate (8) and can slide horizontally relative to the supporting plate The steel sleeve press-fitting assembly further includes an eleventh guide rail (90). The fourth slide plate (89) is installed below the lifting plate through the eleventh guide rail (90). The ninth servo electric cylinder (97) is fixed on one side below the lifting plate, and its output end is connected to the fourth slide plate (89). One side below the fourth slide plate (89) installs the third slide plate (86) through the tenth guide rail (87), and the other side installs the fifth slide plate (93) through the twelfth guide rail (92). The lower end of the third slide plate (86) is fixed with a second pressing head (85), the lower end of the second pressing head (85) is fixed with a first positioning column (83), a first magnet (84) is sleeved outside the first positioning column (83), the lower end of the fifth slide plate (93) is fixed with a third pressing head (94), the lower end of the third pressing head (94) is fixed with a second positioning column (96), and a second magnet (95) is sleeved outside the second positioning column (96). The steel sleeve support assembly further includes a second slide plate (10). The second slide plate (10) is installed above the first top plate (8) through the third guide rail (18). The upper end of the first slider (12) has a hole and is fixed above the second slide plate (10). The first inclined block (14) is installed in the lateral hole of the first slider (12). The first inclined block (14) is cylindrical, with a conical surface on one side and a flat surface on the other side. The second servo electric cylinder (13) is fixed above the first slider (12), and its output end is connected to the flat surface side of the first inclined block (14). The first positioning pin (15) is installed in the longitudinal hole of the first slider (12), with a conical surface at the lower end and a cylindrical surface at the upper end. The conical surface of the first positioning pin (15) cooperates with the conical surface of the first inclined block (14). The first spring (16) is installed outside the cylindrical surface of the first positioning pin (15) and is placed in the vertical hole on the first slider (12). The setscrew (17) is installed below the hole of the first slider (12). The first servo electric cylinder (11) is fixed on one side above the first top plate (8), and its output end is connected to the first slider (12) to drive the steel sleeve support assembly to slide relative to the support plate. The steel sleeve support assemblies are two sets of left-right symmetric assemblies. The positioning component further includes a first guide sleeve (21) fixed on the first top plate (8) and a first guide post (20) cooperating with it. The first guide post (20) is connected to the first lower lifting plate (22). The first air cylinder (19) is fixed below the first top plate (8), and its output end is connected to the first lower lifting plate (22). The first fixing seat (24) is installed above the first lower lifting plate (22) through the fourth guide rail (23). The upper end of the first ball head (25) is spherical and the lower end is flat, and it is installed in the upper hole of the first fixing seat (24). The lower end of the first support block (26) is spherical and the upper end is flat. The lower end of the first support block (26) contacts the upper end of the first ball head (25). The first end cover (27) is fixed to the upper end of the first fixing seat (24). The second positioning pin (30) cooperates with the inner hole above the first support block (26). The first set screw (29) is fixed above the first support block (26), and its top end extends into the chute on the second positioning pin (30). The second spring (28) is installed in the hole of the first support block (26) and is placed below the second positioning pin (30). The positioning component further includes a third guide sleeve (100) fixed on the first top plate (8) and a third guide post (99) cooperating with it. The third guide post (99) is connected to the fourth fixing seat (101). The second air cylinder (98) is fixed below the first top plate (8), and its output end is connected to the fourth fixing seat (101). The fourth ball head (102) is installed in the counterbore of the fourth fixing seat (101), with the upper end being spherical and the lower end being flat. The upper end of the second support block (103) is flat and the lower end is spherical. The lower end of the second support block (103) contacts the upper end of the fourth ball head (102). The fourth end cover (104) is installed at the top of the fourth fixing seat (101), and the chuck (108) is fixed to the top of the second support block (103). A number of uniformly distributed T-shaped grooves are formed in the circumferential direction of the chuck (108). A swage block (111) is installed in the T-shaped groove. The upper part of the swage block (111) is an arc surface, the lower part is a T-shaped structure, and the inner side is a conical surface. A fifth spring (110) is installed on one side of the swage block (111). The other side of the fifth spring (110) contacts the top block (109). The top block (109) is fixed to the chuck (108), and the cross plate (106) is fixed in the inner hole of the second support block (103). The third air cylinder (105) is fixed below the cross plate (106), and its output end is connected to the tapered head (107). The upper part of the tapered head (107) contacts the swage block (111) to push the swage block (111) to expand and tighten synchronously towards the outside. The positioning component further includes a fourth guide sleeve (115) fixed on the first top plate (8) and a fourth guide post (114) cooperating with it. The fourth guide post (114) is connected to the second lower lifting plate (116). The fourth cylinder (113) is fixed below the first top plate (8), and its output end is connected to the second lower lifting plate (116). A counterbore is formed in the upper part of the fifth fixing seat (118), and it is installed above the second lower lifting plate (116) through the thirteenth guide rail (117). A fifth ball head (119) is installed in the counterbore of the fifth fixing seat (118), with a spherical upper end and a flat lower end. The lower end of the third support block (121) is spherical and the upper end is flat. The lower end of the third support block (121) contacts the upper end of the fifth ball head (119). The fifth end cover (120) is fixed on the upper end of the fifth fixing seat (118). The positioning component is two sets of components that are symmetric left and right.

2. The subframe pressing device according to claim 1, wherein: A fourth servo motor (112) is fixed above the first bottom plate (7), and a first gear (2) is fixed to its output end. A first rack (3) is fixed above the first sliding plate (4). The first gear (2) meshes with the first rack (3). A tenth servo electric cylinder (122) is fixed on one side above the lower fixing plate (123), and its output end is connected to the first sliding plate (4).

3. The subframe pressing device according to claim 1, characterized in that: A sixth servo electric cylinder (81) is installed at the middle position at the top end of the frame (1). The output end of the sixth servo electric cylinder (81) is connected to a pressure sensor (82), and the pressure sensor (82) is fixed above the lifting plate. A second guide sleeve (79) is also fixed at the top end of the frame (1). A second guide post (78) passes through the second guide sleeve (79) and is fixed above the lifting plate. There are four second guide sleeves (79), which are evenly distributed around the sixth servo electric cylinder (81). A second wire rope encoder (80) is also fixed on one side of the sixth servo electric cylinder (81), and the output end of the second wire rope encoder (80) is connected to the lifting plate.

4. A subframe pressing device according to claim 1, characterized in that: The steel sleeve pressing component further includes a seventh servo electric cylinder (88) and an eighth servo electric cylinder (91). The seventh servo electric cylinder (88) is fixed on one side below the lifting plate, and its output end is connected to the third sliding plate (86). The eighth servo electric cylinder (91) is fixed on the other side below the lifting plate, and its output end is connected to the fifth sliding plate (93).

5. The subframe pressing device according to claim 1, characterized in that: The bushing press-fitting assembly further includes a fifth guide rail (31) installed on the first top plate (8). A third bottom plate (44) is installed on the fifth guide rail (31). Third vertical plates (46) are arranged on both sides of the third bottom plate (44). A third top plate (47) is fixed to the top ends of the third vertical plates (46). The third bottom plate (44), the third vertical plates (46), and the third top plate (47) are connected to form a cavity. A second servo motor (45) is arranged in the cavity and fixed below the third top plate (47), and the output end is fixed with a third gear (57). A second moving plate (49) is installed on the third top plate (47) through a seventh guide rail (48). A third rack (58) meshing with the third gear (57) is fixed below the second moving plate (49). The top end of the second moving plate (49) is fixedly connected with a second fixed seat (50). The second fixed seat (50) has an opening, and a second end cover (53), a first sliding sleeve (52), and a second ball head (51) are installed in the opening from the outside to the inside in sequence. The upper part of the first sliding sleeve (52) has an opening, and the outer side of the floating core shaft (56) is matched with the inner hole of the first sliding sleeve (52). A second set screw (55) is fixed to the upper end of the first sliding sleeve (52), and the output end is connected to the floating core shaft (56). A fourth servo electric cylinder (59) is fixed above the first top plate (8), and the output end is connected to the third vertical plate (46) to drive the bushing press-fitting assembly to slide relative to the support plate.

6. The subframe pressing device according to claim 5, characterized in that: The upper end of the second ball head (51) is spherical, and the lower end is flat. The lower end of the first sliding sleeve (52) is spherical, and the upper end is flat. The spherical surface at the lower end of the first sliding sleeve (52) is matched with the spherical surface at the upper end of the second ball head (51). The second end cover (53) is annular, and the middle opening has a clearance fit with the outer circle of the first sliding sleeve (52). The outer side of the floating core shaft (56) is cylindrical and has a chute on one side, and a counterbore is opened at the top end, which is matched with the outer diameter of the inner tube of the lower bushing. The cylindrical part on the outer side of the floating core shaft (56) is matched with the inner hole at the upper end of the first sliding sleeve (52). The second set screw (55) is fixed to the upper end of the first sliding sleeve (52), and the output end is connected to the chute of the floating core shaft (56). A third spring (54) is installed in the hole of the first sliding sleeve (52) and is placed below the floating core shaft (56).

7. A subframe pressing device according to claim 1, characterized in that: The bushing pressing assembly further includes a ninth guide rail (76) installed below the lifting plate. A fourth bottom plate (75) is installed on the ninth guide rail (76). Fourth vertical plates (74) are arranged on both sides of the fourth bottom plate (75). A fourth top plate (71) is fixed to the top ends of the fourth vertical plates (74). The fourth bottom plate (75), the fourth vertical plates (74), and the fourth top plate (71) are interconnected to form a cavity. A third servo motor (72) is arranged in the cavity and fixed above the fourth top plate (71), and the output end is fixed with a fourth gear (69). A third fixing seat (67) is installed on the fourth top plate (71) through an eighth guide rail (70). The third fixing seat (67) is fixed with a fourth rack (68) meshing with the fourth gear (69). The third fixing seat is provided with a counterbore, and a third end cover (65), a first pressing head (63), and a third ball head (66) are installed in the hole from the outside to the inside in sequence. A pressing sleeve (62) is sleeved outside the first pressing head (63). A plurality of spring plungers (60) are evenly installed on the outer circumference of the pressing sleeve (62) in the circumferential direction. A third set screw (61) is installed on the pressing sleeve (62), and the top end is in contact with the first pressing head (63). A fifth servo electric cylinder (73) is fixed below the lifting plate, and the output end is connected to the fourth bottom plate (75) to drive the bushing pressing assembly to slide relative to the lifting plate.

8. A subframe pressing device according to claim 7, characterized in that: The upper end of the third ball head (66) is a plane, and the lower end is a spherical surface. The outer side of the first pressing head (63) is cylindrical and has a chute on one side. The upper end is a spherical surface, and the lower end is a plane and has a counterbore. The inner diameter of the counterbore is the same as the outer circle of the inner tube of the upper bushing. The lower end surface of the first pressing head (63) is attached to the upper end surface of the outer tube of the upper bushing, and the upper end surface is in contact with the lower spherical surface of the third ball head (66). The third end cover (65) is annular, and the middle hole has a clearance fit with the outer circle of the first pressing head (63). The top ends of the spring plungers (60) protrude from the inner hole cylindrical surface of the pressing sleeve (62) and are in contact with the outer circle of the upper bushing. The third set screw (61) is installed on the pressing sleeve (62), and the top end is matched with the chute of the first pressing head (63). A fourth spring (64) is sleeved outside the first pressing head (63) and is placed below the third end cover (65).

9. The subframe pressing device according to claim 1, characterized in that: The measurement component further includes a second bottom plate (32), which is installed above the first top plate (8) through a fifth guide rail (31). Second vertical plates (35) are provided on both sides of the second bottom plate (32), and a second top plate (37) is fixed to the top ends of the second vertical plates (35); the second bottom plate (32), the second vertical plates (35), and the second top plate (37) are connected to each other to form a cavity. A first servo motor (36) is arranged in the cavity and fixed below the second top plate (37), and a second gear (40) is fixed to the output end; a first moving plate (41) is installed on the second top plate (37) through a sixth guide rail (38). A third wire-wound encoder (124) is fixed to one side of the second top plate (37), and the output end is connected to the first moving plate (41). A second rack (39) that meshes with the second gear (40) is fixed to the lower end of the first moving plate (41), and a floating head (43) is fixed to the first moving plate (41); a probe (42) is installed above the floating head (43); a third servo electric cylinder (34) is fixed above the first top plate (8), and the output end is connected to the second bottom plate (32) to drive the measurement component to slide relative to the support plate. A first wire-wound encoder (33) is placed at the lower end of the third servo electric cylinder (34), and the output end is connected to the second bottom plate (32).

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