Lubricant spraying device for open bushing

Abstract

The present invention belongs to the technical field of lubricant spraying equipment, and provides a lubricant spraying equipment for an open bushing. The angular positioning component can perform preliminary radial positioning and angular positioning on the open bushing. The positioning rotation component and the clamping positioning component can perform axial positioning on the open bushing and can drive the fixed open bushing to rotate. The measuring component can measure the positions of the lower end face and the upper end face of the open bushing outer tube and the actual diameter of the open bushing outer tube. The nozzle position adjustment component can adjust the nozzle to slide in the vertical and horizontal directions, so as to accurately adjust the spraying amount of the open bushing within the appearance range of the open bushing, and accurately control the spraying amount based on accurate positioning, thereby avoiding waste of lubricant and saving cost. At the same time, the amount of lubricant of the open bushing is sprayed evenly, avoiding quality problems of the open bushing during press-fitting, and improving the quality of assembly.

Description

Technical Field

[0001] The present application relates to the technical field of lubricant spraying equipment, and in particular to a lubricant spraying equipment for an open bushing. Background Art

[0002] In order to reduce vibration and noise during driving, a rubber bushing needs to be pressed into the machined hole of the aluminum alloy steering knuckle using an interference fit method. The outer tube of some rubber bushings is made of aluminum alloy. During the press-fitting production process, aluminum chips are often squeezed out of the orifice of the press-fitting hole. The general solution is to spray lubricant on the outer tube of the bushing before press-fitting. The amount of lubricant sprayed directly affects the pressing force during press-fitting, and the pressing force is an important process parameter that directly characterizes the press-fitting quality. The existing production line spraying equipment cannot accurately position the open bushing, and the continuous spraying of lubricant causes a waste of lubricant. The amount of lubricant sprayed on the open bushing cannot be accurately controlled, which can easily cause uneven spraying and high production costs. Summary of the invention

[0003] The embodiment of the present application provides a lubricant spraying device for an open bushing, which can solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] In a first aspect, a lubricant spraying device for an open bushing is provided, comprising an angular positioning assembly, a positioning rotation assembly, a clamping positioning assembly, a measuring assembly, and a nozzle position adjustment assembly, wherein the angular positioning assembly comprises a left arm, a right arm, and a spring plunger, wherein the left arm and the right arm both have arc-shaped clamping surfaces, and the distance between the left arm and the right arm can be adjusted; a spring plunger is installed at the center of the arc-shaped clamping surface of one of the left arm and the right arm; the clamping positioning assembly comprises a first locating pin, wherein the lower end of the first locating pin is conical and the upper end is cylindrical; the positioning rotation assembly comprises a second locating pin, wherein the top end of the second locating pin is conical and the lower end is cylindrical; the first locating pin and the second locating pin can cooperate with the inner tube of the open bushing to clamp and position the open bushing; the measuring assembly comprises a measuring probe, a first wire encoder, and a second wire encoder, wherein the first wire encoder measures the The vertical position of the measuring needle, and the second wire encoder measures the horizontal position of the measuring needle; the nozzle position adjustment assembly includes a first slide plate, a first guide rail, a first servo electric cylinder, a first vertical plate, a second slide plate, a second guide rail, and a second servo electric cylinder. The first slide plate is installed on the first guide rail, and the output end of the first servo electric cylinder is fixed on the first slide plate. The first slide plate can slide along the first guide rail driven by the first servo electric cylinder; the first vertical plate is fixed on the top surface of the first slide plate, and the second slide plate is installed on the side of the first vertical plate facing the opening bushing through the second guide rail. The nozzle is fixed on the second slide plate, and the second servo electric cylinder is fixed on the first vertical plate. The output end of the second servo electric cylinder is connected to the bottom of the second slide plate, and the second slide plate can slide along the second guide rail driven by the second servo electric cylinder.

[0006] In some embodiments, the measuring assembly also includes a floating head, a sixth guide rail, a third vertical plate, a fifth servo electric cylinder, a sixth slide plate, a seventh guide rail, and a sixth servo electric cylinder. The measuring needle is installed at one end of the floating head, and the other end of the floating head is installed on the sixth guide rail. The sixth guide rail, the fifth servo electric cylinder and the first wire encoder are all fixedly installed on the side of the third vertical plate facing the opening bushing. The output end of the fifth servo electric cylinder is connected to the floating head, and the floating head can slide along the sixth guide rail driven by the fifth servo electric cylinder; the output end of the first wire encoder is connected to the floating head; the third vertical plate is fixed on the top surface of the sixth slide plate, and the sixth slide plate is installed on the seventh guide rail. The output end of the sixth servo electric cylinder and the second wire encoder are both connected to the sixth slide plate, and the sixth slide plate can slide along the seventh guide rail driven by the sixth servo electric cylinder.

[0007] In some embodiments, the angular positioning assembly further includes a third slide, a fourth slide, a third guide rail, a top plate, a rack, a first servo motor, a gear, a support plate, a bottom plate, a fourth guide rail, a second vertical plate, a third servo electric cylinder, a fifth slide, a fifth guide rail, and a fourth servo electric cylinder. The left arm is fixed on the third slide, and the right arm is fixed on the fourth slide. The third slide and the fourth slide are mounted on the side of the top plate facing the opening bushing through the third guide rail. Racks are respectively fixed at the lower ends of the third slide and the fourth slide. The first servo motor is fixed on the top plate. A gear is fixed at the output end of the first servo motor. and meshing with the gear; the top plate is fixed to one side of the bottom plate through the support plate, and the bottom plate is installed on one side of the second vertical plate through the fourth guide rail; the third servo electric cylinder is fixed to one side of the second vertical plate, and its output end is connected to the support plate, and the top plate, the support plate and the bottom plate can slide vertically along the fourth guide rail driven by the third servo electric cylinder; the second vertical plate is fixed to the top surface of the fifth slide plate, and the fifth slide plate is installed on the fifth guide rail, and the output end of the fourth servo electric cylinder is connected to the fifth slide plate, and the fifth slide plate can slide horizontally along the fifth guide rail driven by the fourth servo electric cylinder.

[0008] In some embodiments, the positioning and rotating assembly also includes a second servo motor, a second rotating shaft, a third set screw, and a second spring. The output end of the second servo motor fixes the second rotating shaft. The upper end surface of the second rotating shaft is serrated, and a first circular hole is provided on the upper end surface of the second rotating shaft. A first slide groove is provided on the side wall of the second positioning pin. The cylindrical part at the lower end of the second positioning pin cooperates with the first circular hole. The third set screw is fixed on the upper side wall of the second rotating shaft. One end of the third set screw extends into the first circular hole and cooperates with the first slide groove. The second spring is installed in the first circular hole and is placed below the second positioning pin.

[0009] In some embodiments, the clamping and positioning assembly further includes a fixing sleeve, a sliding sleeve, a second set screw, a first rotating shaft, a connecting head, a cylinder, a first set screw, and a first spring, wherein the outer circle of the sliding sleeve is in clearance with the inner hole of the fixing sleeve, a second slide groove is provided on the outer side wall of the sliding sleeve, the second set screw is fixed to the side wall of the fixing sleeve, one end of the second set screw extends into the inner hole of the fixing sleeve and cooperates with the second slide groove; the first rotating shaft is mounted inside the sliding sleeve through a bearing, the lower end surface of the first rotating shaft is serrated, and a second circular hole is provided on the lower end surface of the first rotating shaft; the connecting head is fixed to the top end of the sliding sleeve, and the output end of the cylinder is connected to the top of the connecting head; the cylindrical part of the upper end of the first positioning pin cooperates with the second circular hole; the first set screw is fixed to the lower end side wall of the first rotating shaft, and one end thereof extends into the second circular hole and cooperates with the third slide groove provided on the side wall of the first positioning pin; the first spring is mounted in the second circular hole and is placed on the top surface of the first positioning pin.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The present invention provides a lubricant spraying device for an open bushing. The angular positioning component can perform preliminary radial positioning and angular positioning on the open bushing. The positioning rotation component and the pressing positioning component can perform axial positioning on the open bushing and can drive the fixed open bushing to rotate, ensuring that the inner tube axis of the open bushing A is coaxial with the axes of the first positioning pin and the second positioning pin. The position of the open bushing can be accurately positioned through the above positioning, laying a foundation for the next step of accurate spraying. The measuring component can measure the position of the lower end face and the upper end face of the outer tube of the open bushing and the actual diameter of the outer tube of the open bushing. The nozzle position adjustment component can adjust the nozzle to slide in the vertical and horizontal directions, so as to accurately adjust the spraying amount of the open bushing within the appearance range. The lubricant spraying device for the open bushing in the present invention can avoid the waste of lubricant and save costs by accurately positioning the open bushing and accurately controlling the spraying amount based on the accurate positioning. At the same time, the amount of lubricant of the open bushing is sprayed evenly, avoiding quality problems of the open bushing during press-fitting, thereby improving the assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1The structure diagram of a lubricant spraying device for an open bushing of the present invention is shown in FIG. Figure 1 .

[0014] Figure 2 The structure diagram of a lubricant spraying device for an open bushing of the present invention is shown in FIG. Figure 2 .

[0015] Figure 3 The present invention is a schematic structural diagram of a clamping and positioning assembly of a lubricant spraying device for an open bushing.

[0016] Figure 4 The present invention is a schematic structural diagram of an angular positioning assembly of a lubricant spraying device for an open bushing.

[0017] Figure 5 The present invention is a schematic structural diagram of a positioning and rotating assembly of a lubricant spraying device for an open bushing.

[0018] Figure 6 It is a structural schematic diagram of a second rotating shaft of a lubricant spraying device for an open bushing according to the present invention.

[0019] Among them: 1-frame, 2-fixed plate, 3-first guide rail, 4-first slide plate, 5-first vertical plate, 6-first servo electric cylinder, 7-second servo electric cylinder, 8-second guide rail, 9-second slide plate, 10-nozzle, 11-first positioning pin, 12-first rotating shaft, 13-first set screw, 14-first spring, 15-sliding sleeve, 16-second set screw, 17-fixed sleeve, 18-connector, 19-cylinder, 20-third slide plate, 21-spring plunger, 22-left arm, 23-right arm, 24-fourth slide plate, 25-third guide rail, 26-top plate, 27-support plate, 28-bottom plate, 29-fourth guide Rail, 30 - rack, 31 - gear, 32 - first servo motor, 33 - second vertical plate, 34 - third servo electric cylinder, 35 - fifth slide plate, 36 - fourth servo electric cylinder, 37 - fifth guide rail, 38 - second servo motor, 39 - bearing seat, 40 - second rotating shaft, 41 - second spring, 42 - third set screw, 43 - second positioning pin, 44 - measuring needle, 45 - floating head, 46 - sixth guide rail, 47 - third vertical plate, 48 - fifth servo electric cylinder, 49 - first pull-wire encoder, 50 - second pull-wire encoder, 51 - sixth servo electric cylinder, 52 - sixth slide plate, 53 - seventh guide rail, A - open bushing. DETAILED DESCRIPTION

[0020] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. 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 includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] Embodiment 1:

[0024] In conjunction with the instruction manual Figure 1-6As shown, in Example 1 of the present application, a lubricant spraying device for an open bushing is provided, including an angular positioning component, a positioning rotation component, a clamping positioning component, a measuring component, and a nozzle position adjustment component. Specifically, the components of a lubricant spraying device for an open bushing include: a frame 1, a fixed plate 2, a first guide rail 3, a first slide plate 4, a first vertical plate 5, a first servo electric cylinder 6, a second servo electric cylinder 7, a second guide rail 8, a second slide plate 9, a nozzle 10, a first positioning pin 11, a first rotating shaft 12, a first set screw 13, a first spring 14, a sliding sleeve 15, a second set screw 16, a fixing sleeve 17, a connector 18, a cylinder 19, a third slide plate 20, a spring plunger 21, a left arm 22, a right arm 23, a fourth slide plate 24, a third guide rail 25, a top plate 26, a support plate 2 7. Base plate 28, fourth guide rail 29, rack 30, gear 31, first servo motor 32, second vertical plate 33, third servo electric cylinder 34, fifth slide plate 35, fourth servo electric cylinder 36, fifth guide rail 37, second servo motor 38, bearing seat 39, second rotating shaft 40, second spring 41, third set screw 42, second locating pin 43, measuring needle 44, floating head 45, sixth guide rail 46, third vertical plate 47, fifth servo electric cylinder 48, first pull-wire encoder 49, second pull-wire encoder 50, sixth servo electric cylinder 51, sixth slide plate 52 and seventh guide rail 53.

[0025] like Figure 1 and 4As shown in the figure, the angular positioning assembly includes a left arm 22, a right arm 23, a spring plunger 21, a third slide 20, a fourth slide 24, a third guide rail 25, a top plate 26, a support plate 27, a bottom plate 28, a fourth guide rail 29, a second vertical plate 33, a rack 30, a gear 31, a first servo motor 32, a third servo electric cylinder 34, a fifth slide 35, a fifth guide rail 37, and a fourth servo electric cylinder 36. The left arm 22 and the right arm 23 both have arc-shaped clamping surfaces, and the distance between the left arm and the right arm can be adjusted. The spring plunger 21 is installed on the left arm 22, and the spring plunger 21 is installed in the center of the arc-shaped clamping surface of the left arm 22. The left arm 22 is fixed on the third slide 20, and the right arm 23 is fixed on the fourth slide 24. The third slide plate 20 and the fourth slide plate 24 are mounted on one side of the top plate 26 through the third guide rail 25, that is, the third slide plate 20 and the fourth slide plate 24 are mounted on the third guide rail 25, and the third guide rail 25 is fixedly mounted on the side of the top plate 26 facing the opening bushing. Racks 30 are fixed to the lower ends of the third slide plate 20 and the fourth slide plate 24, respectively. A first servo motor 32 is fixed to one side of the top plate 26, and a gear 31 is fixed to its output end, and the rack 30 and the gear 31 are meshed. The first servo motor 32 can drive the gear 31 to rotate, and the gear 31 drives the third slide plate 20 and the fourth slide plate 24 to move closer or farther along the third guide rail 25 through the rack 30, and the left arm 22 on the third slide plate 20 and the right arm 23 on the fourth slide plate 24 clamp the opening bushing or release the opening bushing. The top plate 26 is fixed to one side of the bottom plate 28 through the support plate 27, that is, the top plate 26 is fixed to one end of the support plate 27, and the other end of the support plate 27 is fixed to one side of the bottom plate 28. The bottom plate 28 is installed on one side of the second vertical plate 33 through the fourth guide rail 29, that is, the bottom plate 28 is installed on the fourth guide rail 29, and the fourth guide rail 29 is fixedly installed on one side of the second vertical plate 33. The third servo electric cylinder 34 is fixed to one side of the second vertical plate 33, and its output end is connected to the support plate 27. The support plate 27, the top plate 26, and the bottom plate 28 are fixed as a whole, and the bottom plate 28 can slide up and down along the fourth guide rail 29 driven by the third servo electric cylinder 34. The second vertical plate 33 is fixed to the top surface of the fifth slide plate 35, and the fifth slide plate 35 is installed on the top surface of the fixed plate 2 through the fifth guide rail 37, that is, the fifth slide plate 35 is installed on the fifth guide rail 37, and the fifth guide rail 37 is fixedly installed on the top surface of the fixed plate 2. The fourth servo electric cylinder 36 is fixed on the top surface of the fixed plate 2 , and its output end is connected to the fifth slide plate 35 . The fifth slide plate 35 can slide horizontally left and right along the fifth guide rail 37 driven by the fourth servo electric cylinder 36 .

[0026] like Figure 1 and Figure 5As shown in , the positioning and rotating assembly includes a bearing seat 39, a second rotating shaft 40, a second servo motor 38, a second positioning pin 43, a third set screw 42, and a second spring 41. The bearing seat 39 is fixed at the middle position above the fixed plate 2, the second rotating shaft 40 is installed inside the bearing seat 39 through a bearing, and the second servo motor 38 is fixed below the fixed plate 2, and its output end is connected to the bottom of the second rotating shaft 40. Figure 6 As shown in , the upper end surface of the second rotating shaft 40 is serrated, and a first circular hole is provided on the upper end surface of the second rotating shaft 40 to prevent the bushing from sliding when rotating. The top end of the second locating pin 43 is conical, the lower end is cylindrical, and a first slide groove is provided on the side wall of the second locating pin 43. The conical surface at the top end of the second locating pin 43 can cooperate with the inner tube of the open bushing to position the open bushing A. The cylindrical part at the lower end of the second locating pin 43 cooperates with the first circular hole above the second rotating shaft 40, and the third set screw 42 is fixed on the upper side wall of the second rotating shaft 40, one end of which extends into the first circular hole and cooperates with the first slide groove on the side wall of the second locating pin 43. The second spring 41 is installed in the first circular hole above the second rotating shaft 40 and is placed below the second locating pin 43.

[0027] like Figure 1 and 3 As shown in , the clamping and positioning assembly includes a fixed sleeve 17, a sliding sleeve 15, a second set screw 16, a first rotating shaft 12, a connector 18, a cylinder 19, a first positioning pin 11, a first set screw 13, and a first spring 14. The fixed sleeve 17 is fixed below the top of the frame 1. The outer circle of the sliding sleeve 15 is in clearance with the inner hole of the fixed sleeve 17. A second slide groove is provided on the outer side wall of the sliding sleeve 15. The second set screw 16 is fixed on the side wall of the fixed sleeve 17. One end of the second set screw 16 extends into the inner hole of the fixed sleeve 17 and is in contact with the second slide groove on the sliding sleeve 15. The first rotating shaft 12 is installed inside the sliding sleeve 15 through a bearing. The lower end surface of the first rotating shaft 12 is serrated to prevent sliding when the bushing rotates. The connector 18 is fixed on the top of the sliding sleeve 15. The cylinder 19 is fixed on the top of the frame 1, and its output end is connected to the top of the connector 18. The lower end of the first positioning pin 11 is conical, and the upper end is cylindrical. The cylindrical part of the upper end of the first positioning pin 11 cooperates with the second circular hole opened on the lower end surface of the first rotating shaft 12. The conical surface of the lower end of the first positioning pin 11 can cooperate with the inner tube of the open bushing to press and position the open bushing A. The first set screw 13 is fixed on the lower end side wall of the first rotating shaft 12, and one end thereof extends into the second circular hole and cooperates with the third slide groove opened on the side wall of the first positioning pin 11; the first spring 14 is installed in the second circular hole below the first rotating shaft 12 and is placed on the top end surface of the first positioning pin 11.

[0028] like Figure 2As shown in , the measuring assembly includes a measuring needle 44, a floating head 45, a sixth guide rail 46, a third vertical plate 47, a fifth servo electric cylinder 48, a first wire encoder 49, a sixth slide plate 52, a seventh guide rail 53, a second wire encoder 50, and a sixth servo electric cylinder 51. The measuring needle 44 is mounted on one end of the floating head 45, and the other end of the floating head 45 is mounted on the sixth guide rail 46. The sixth guide rail 46 is fixedly mounted on one side of the third vertical plate 47. The fifth servo electric cylinder 48 is fixed on one side of the third vertical plate 47. The output end of the fifth servo electric cylinder 48 is connected to the floating head 45, and the floating head 45 can slide along the sixth guide rail 46 driven by the fifth servo electric cylinder 48. The first wire encoder 49 is fixed on one side of the third vertical plate 47, and the output end of the first wire encoder 49 is connected to the floating head 45. The third vertical plate 47 is fixed on the top surface of the sixth slide plate 52, and the sixth slide plate 52 is mounted above the fixed plate 2 through the seventh guide rail 53. The second wire encoder 50 and the sixth servo electric cylinder 51 are fixed on one side of the top surface of the fixed plate 2, and the second wire encoder 50 is placed above the sixth servo electric cylinder 51. The output ends of the second wire encoder 50 and the sixth servo electric cylinder 51 are connected to the sixth slide 52, and the sixth slide 52 can slide along the seventh guide rail 53 driven by the sixth servo electric cylinder 51. The measuring needle 44 moves in the vertical and horizontal directions with the extension and retraction of the fifth servo electric cylinder 48 and the sixth servo electric cylinder 51. The first wire encoder 49 measures the vertical position of the measuring needle 44, and the second wire encoder 50 measures the horizontal position of the measuring needle 44.

[0029] like Figure 1 As shown in , the nozzle position adjustment assembly includes a first slide plate 4, a first guide rail 3, a first servo electric cylinder 6, a first vertical plate 5, a second servo electric cylinder 7, a second slide plate 9, a second guide rail 8, and a nozzle 10. The fixed plate 2 is fixed to the bottom of the frame 1, the first slide plate 4 is installed on the side above the fixed plate 2 through the first guide rail 3, the first servo electric cylinder 6 is fixed above the fixed plate 2, and its output end is connected to the first slide plate 4, and the first slide plate 4 can slide along the first guide rail 3 driven by the first servo electric cylinder 6. The first vertical plate 5 is fixed on the top surface of the first slide plate 4, the second slide plate 9 is installed on the side of the first vertical plate 5 facing the opening bushing through the second guide rail 8, the nozzle 10 is fixed on the second slide plate 9, the second servo electric cylinder 7 is fixed on the side of the first vertical plate 5 facing the opening bushing, and its output end is connected to the bottom of the second slide plate 9, and the second slide plate 9 can slide along the second guide rail 8 driven by the second servo electric cylinder 7.

[0030] During operation, the first servo motor 32 causes the left arm 22 and the right arm 23 to move synchronously toward each other through the gear 31, the rack 30 and the third guide rail 25. The size of the circular inner hole formed by the left arm 22 and the right arm 23 can be adjusted according to the outer diameter size of the open bushing A; the open bushing A is placed in the circular inner hole formed by the left arm 22 and the right arm 23 to achieve preliminary radial positioning of the open bushing A; the opening of the open bushing A cooperates with the spring plunger 21 to achieve angular positioning of the open bushing A; the fourth servo electric cylinder 36 realizes horizontal movement of the open bushing A through the fifth guide rail 37; the third servo electric cylinder 34 realizes vertical movement of the open bushing A through the fourth guide rail 29. By adjusting the open bushing A in both horizontal and vertical directions, the open bushing A can be placed above the second positioning pin 43, and the inner tube axis of the open bushing A is coaxial with the axis of the second positioning pin 43; The hole at the lower end of the inner tube of the open bushing A cooperates with the conical surface at the upper end of the second locating pin 43; the cylinder 19 moves the first locating pin 11 downward through the sliding sleeve 15 and the fixed sleeve 17; the conical surface at the lower end of the first locating pin 11 cooperates with the hole at the upper end of the inner tube of the open bushing to achieve precise radial positioning of the open bushing A; the first locating pin 11 continues to move downward, so that the upper end surface of the inner tube of the open bushing fits with the lower end of the first rotating shaft 12, and the lower end surface of the inner tube of the open bushing fits with the top end of the second rotating shaft 40, and the two end surfaces of the inner tube of the open bushing are pressed tightly to achieve precise axial positioning of the open bushing A; after positioning is completed, the first servo motor 32 causes the left arm 22 and the right arm 23 to move synchronously in opposite directions through the gear 31, the rack 30 and the third guide rail 25, and the left arm 22 and the right arm 23 are opened, and the fourth servo electric cylinder 36 returns the left arm 22 and the right arm 23 to their initial positions through the fifth guide rail 37.

[0031] The sixth servo electric cylinder 51 moves the measuring needle 44 horizontally through the seventh guide rail 53, and the fifth servo electric cylinder 48 moves the measuring needle 44 vertically through the sixth guide rail 46; the position of the lower end surface of the outer tube of the open bushing can be measured by the first pull-wire encoder 49; the actual diameter of the outer tube of the open bushing can be measured by the second pull-wire encoder 50; the measured actual diameter value of the outer tube of the open bushing is fed back to the first servo electric cylinder 6, and the first servo electric cylinder 6 adjusts the horizontal position of the nozzle 10 through the first guide rail 3; the measured position value of the lower end surface of the outer tube of the open bushing is fed back to the second servo electric cylinder 7, and the second servo electric cylinder 7 adjusts the vertical position of the nozzle 10 through the second guide rail 8; the second servo motor 38 can rotate the open bushing A through the second rotating shaft 40, and the nozzle 10 can evenly spray lubricant on the outer tube of the open bushing, and the amount of spraying can be adjusted by adjusting the rotation speed of the second servo motor 38.

[0032] In this embodiment 1, a lubricant spraying device for an open bushing is provided. The angular positioning component can perform preliminary radial positioning and angular positioning on the open bushing. The positioning rotation component and the clamping positioning component can perform axial positioning on the open bushing and can drive the fixed open bushing to rotate, ensuring that the inner tube axis of the open bushing A is coaxial with the axes of the first positioning pin and the second positioning pin. The position of the open bushing can be accurately positioned through the above positioning, laying the foundation for the next step of accurate spraying. The measuring component can measure the position of the lower end face and the upper end face of the outer tube of the open bushing and the actual diameter of the outer tube of the open bushing. The nozzle position adjustment component can adjust the nozzle to slide in the vertical and horizontal directions, so as to accurately adjust the spraying amount of the open bushing within the appearance range. A lubricant spraying device for an open bushing in the present invention can avoid waste of lubricant and save costs by accurately positioning the open bushing and accurately controlling the spraying amount based on the accurate positioning. At the same time, the amount of lubricant of the open bushing is sprayed evenly, avoiding quality problems of the open bushing during press-fitting, thereby improving the quality of assembly.

[0033] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A lubricant spraying device for an open bushing, characterized in that: It includes an angular positioning assembly, a positioning rotation assembly, a clamping positioning assembly, a measuring assembly, and a nozzle position adjustment assembly. The angular positioning assembly includes a left arm, a right arm, and a spring plunger. Both the left arm and the right arm have arc-shaped clamping surfaces, and the distance between the left arm and the right arm can be adjusted. A spring plunger is installed at the center of the arc-shaped clamping surface of one of the left arm and the right arm. The compression and positioning assembly includes a first positioning pin, the lower end of which is conical and the upper end is cylindrical; the positioning and rotating assembly includes a second positioning pin, the top end of which is conical and the lower end is cylindrical; the first positioning pin and the second positioning pin can cooperate with the inner tube of the open bushing to compress and position the open bushing; The measuring assembly comprises a measuring needle, a first wire-drawing encoder and a second wire-drawing encoder, wherein the first wire-drawing encoder measures the vertical position of the measuring needle, and the second wire-drawing encoder measures the horizontal position of the measuring needle; The nozzle position adjustment assembly includes a first slide plate, a first guide rail, a first servo electric cylinder, a first vertical plate, a second slide plate, a second guide rail, and a second servo electric cylinder. The first slide plate is mounted on the first guide rail, and the output end of the first servo electric cylinder is fixed on the first slide plate. The first slide plate can slide along the first guide rail driven by the first servo electric cylinder; the first vertical plate is fixed on the top surface of the first slide plate, and the second slide plate is mounted on the side of the first vertical plate facing the opening bushing through the second guide rail. The nozzle is fixed on the second slide plate, and the second servo electric cylinder is fixed on the first vertical plate. The output end of the second servo electric cylinder is connected to the bottom of the second slide plate, and the second slide plate can slide along the second guide rail driven by the second servo electric cylinder.

2. A lubricant spraying device for an open bushing according to claim 1, characterized in that: The measuring assembly also includes a floating head, a sixth guide rail, a third vertical plate, a fifth servo electric cylinder, a sixth slide plate, a seventh guide rail, and a sixth servo electric cylinder. The measuring needle is installed at one end of the floating head, and the other end of the floating head is installed on the sixth guide rail. The sixth guide rail, the fifth servo electric cylinder and the first wire encoder are all fixedly installed on the side of the third vertical plate facing the opening bushing. The output end of the fifth servo electric cylinder is connected to the floating head, and the floating head can slide along the sixth guide rail driven by the fifth servo electric cylinder; the output end of the first wire encoder is connected to the floating head; the third vertical plate is fixed on the top surface of the sixth slide plate, and the sixth slide plate is installed on the seventh guide rail. The output end of the sixth servo electric cylinder and the second wire encoder are both connected to the sixth slide plate, and the sixth slide plate can slide along the seventh guide rail driven by the sixth servo electric cylinder.

3. A lubricant spraying device for an open bushing according to claim 1, characterized in that: The angular positioning assembly also includes a third slide, a fourth slide, a third guide rail, a top plate, a rack, a first servo motor, a gear, a support plate, a bottom plate, a fourth guide rail, a second vertical plate, a third servo electric cylinder, a fifth slide, a fifth guide rail, and a fourth servo electric cylinder. The left arm is fixed on the third slide, and the right arm is fixed on the fourth slide. The third slide and the fourth slide are installed on the side of the top plate facing the opening bushing through the third guide rail. Racks are fixed to the lower ends of the third slide and the fourth slide, respectively. The first servo motor is fixed to the top plate. A gear is fixed to the output end of the first servo motor. The rack and the gear The wheels are engaged; the top plate is fixed to one side of the bottom plate through the support plate, and the bottom plate is installed on one side of the second vertical plate through the fourth guide rail; the third servo electric cylinder is fixed to one side of the second vertical plate, and its output end is connected to the support plate, and the top plate, the support plate and the bottom plate can slide vertically along the fourth guide rail driven by the third servo electric cylinder; the second vertical plate is fixed to the top surface of the fifth slide plate, and the fifth slide plate is installed on the fifth guide rail, and the output end of the fourth servo electric cylinder is connected to the fifth slide plate, and the fifth slide plate can slide horizontally along the fifth guide rail driven by the fourth servo electric cylinder.

4. A lubricant spraying device for an open bushing according to claim 1, characterized in that: The positioning and rotating assembly also includes a second servo motor, a second rotating shaft, a third set screw, and a second spring. The output end of the second servo motor fixes the second rotating shaft. The upper end surface of the second rotating shaft is serrated, and a first circular hole is provided on the upper end surface of the second rotating shaft. A first sliding groove is provided on the side wall of the second positioning pin. The cylindrical part at the lower end of the second positioning pin cooperates with the first circular hole. The third set screw is fixed on the upper side wall of the second rotating shaft. One end of the third set screw extends into the first circular hole and cooperates with the first sliding groove. The second spring is installed in the first circular hole and is placed below the second positioning pin.

5. A lubricant spraying device for an open bushing according to claim 1, characterized in that: The clamping and positioning assembly also includes a fixing sleeve, a sliding sleeve, a second set screw, a first rotating shaft, a connecting head, a cylinder, a first set screw, and a first spring, wherein the outer circle of the sliding sleeve is matched with the inner hole of the fixing sleeve, a second slide groove is provided on the outer side wall of the sliding sleeve, the second set screw is fixed to the side wall of the fixing sleeve, one end of the second set screw extends into the inner hole of the fixing sleeve and cooperates with the second slide groove; the first rotating shaft is installed inside the sliding sleeve through a bearing, the lower end surface of the first rotating shaft is serrated, and a second circular hole is provided on the lower end surface of the first rotating shaft; the connecting head is fixed to the top end of the sliding sleeve, and the output end of the cylinder is connected to the top of the connecting head; the cylindrical part of the upper end of the first positioning pin cooperates with the second circular hole; the first set screw is fixed to the lower end side wall of the first rotating shaft, and one end thereof extends into the second circular hole and cooperates with the third slide groove provided on the side wall of the first positioning pin; the first spring is installed in the second circular hole and is placed on the top surface of the first positioning pin.

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