CN117697380A - Method for assembling lead screw bearing in automobile tail door stay bar - Google Patents
Method for assembling lead screw bearing in automobile tail door stay bar Download PDFInfo
- Publication number
- CN117697380A CN117697380A CN202311775731.9A CN202311775731A CN117697380A CN 117697380 A CN117697380 A CN 117697380A CN 202311775731 A CN202311775731 A CN 202311775731A CN 117697380 A CN117697380 A CN 117697380A
- Authority
- CN
- China
- Prior art keywords
- bearing
- screw rod
- cylinder
- screw
- assembling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000007599 discharging Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses an assembly method of a screw rod bearing in a support rod of an automobile tail door, which comprises the following steps: step S1: the bearing enters a bearing positioning groove of the bearing seat along a feeding groove of a bearing feeding groove, and the bearing in the bearing positioning groove is coaxially aligned with a screw on the screw support frame; step S2: the second side of the bearing support seat is pushed towards the direction of the screw rod support frame by the assembling air cylinder so as to press-assemble the bearing on the bearing support seat onto the screw rod on the screw rod support frame. The bearing and the screw rod are coaxially positioned through the bearing positioning groove and the screw rod supporting frame, so that the bearing and the screw rod are coaxial during assembly, and the bearing is jacked and assembled on the screw rod by utilizing the assembly cylinder to complete assembly, so that the damage rate of the bearing and the screw rod is reduced.
Description
Technical Field
The invention belongs to the technical field of bearing assembly, and particularly relates to an assembly method of a screw rod bearing in an automobile tail door stay bar.
Background
More and more automobile tail doors are opened by adopting an electric stay bar, and in the use process of the stay bar, a motor drives a screw rod to extend and shorten the stay bar, and the screw rod needs an axle center in the rotation process, so that the screw rod needs to be fixed in a bearing. How to assemble the bearing and the screw rod into a semi-finished product becomes a difficult problem. Because the forces involved in assembling the bearings with the lead screw are very high, hundreds of kilograms or even thousands of kilograms are required. If the bearing is not concentric with the screw, the bearing is necessarily damaged, and the head of the screw is also possibly damaged.
Disclosure of Invention
In view of the above problems, the application provides a novel bearing assembly device and method, which take the coaxiality problem of a bearing and a screw rod and the inner diameter tolerance of the bearing and the outer diameter tolerance of a position where the bearing is arranged on the screw rod into consideration, so as to ensure that the bearing and the screw rod are assembled in place at one time.
The invention aims at solving the technical problem that in the prior art, in the assembly process of a bearing and a screw rod, the head of the bearing or the screw rod is damaged in the assembly process due to the fact that the bearing and the screw rod are not coaxial, and one of the purposes is to provide an assembly method of the screw rod bearing in a supporting rod of an automobile tail door.
The invention relates to an assembly method of a screw rod bearing in a support rod of an automobile tail door, which comprises the following steps:
step S1: the bearing enters a bearing positioning groove of the bearing seat along a feeding groove of a bearing feeding groove, and the bearing in the bearing positioning groove is coaxially aligned with a screw on the screw support frame;
step S2: the second side of the bearing support seat is pushed towards the direction of the screw rod support frame by the assembling air cylinder so as to press-assemble the bearing on the bearing support seat onto the screw rod on the screw rod support frame.
In a preferred example, the method is implemented with an automotive tail gate stay in-vivo lead screw bearing assembly apparatus comprising:
the bearing feeding groove is provided with a feeding groove channel capable of conveying a plurality of bearings in continuous arrangement;
a screw support for fixing the screw;
the bearing support seat is used for supporting the bearing and is positioned at one end side of the screw rod support frame, a first side wall of the bearing support seat is provided with a bearing positioning groove which is used for coaxially aligning the bearing with the screw rod on the screw rod support frame, and the bearing positioning groove is communicated with a feeding groove channel of the bearing feeding groove;
the assembly cylinder is arranged on the second side of the bearing support seat, and pushes the bearing support seat towards the direction of the screw rod support frame so as to press and assemble the bearing on the bearing support seat onto the screw rod on the screw rod support frame.
In a preferred example, the groove wall of the bearing positioning groove has:
a downhill wall into which the bearing slides down;
the arc wall is completely matched with the shape of the bearing, the arc wall is connected with the downhill wall, the lowest point of the arc wall is lower than the lowest point of the downhill wall, and the axis formed by the arc wall is coaxial with the screw rod on the screw rod supporting frame.
In a preferred example, the method further comprises:
step S2A, before step S2, the bearing socket is heated by a thermocouple inserted in the bearing socket, thereby heating the bearing on the bearing socket to expand the inner diameter of the bearing.
In a preferred example, step S2, the second side of the bearing socket is pushed by the cylinder rod of the assembly cylinder contacting the second side wall of the bearing socket towards the direction of the screw rod support frame so as to press-assemble the bearing on the bearing socket onto the screw rod on the screw rod support frame.
In a preferred example, the method further comprises:
step S2B, after the step S1 and before the step S2, detecting whether the bearing completely enters a bearing positioning groove of the bearing supporting seat or not by a detection sensor; if the detection sensor detects that no bearing is in the bearing positioning groove, the step S1 is continued, and if the detection sensor detects that the bearing is in the bearing positioning groove, the step S2 is continued.
In a preferred example, the automotive tail gate stay inner lead screw bearing assembly apparatus further has: the device comprises a bearing supporting seat, a bearing assembly cylinder, a reset spring and a limiting plate, wherein one end of the reset spring is connected with the bearing supporting seat, and the other end of the reset spring is connected with the assembly cylinder; the limiting plate is arranged on the second side of the bearing supporting seat;
the method further comprises the steps of: step S3, after the assembly in the step S2 is completed, the bearing supporting seat is pulled back by the reset spring until a bearing positioning groove on the bearing supporting seat is communicated with a vertical channel of the feeding channel and is limited by the limiting plate, so that the next bearing is ready to be installed in the bearing positioning groove; during this process, the cylinder rod of the fitting cylinder is retracted independently and at a distance from the second side wall of the bearing socket.
In a preferred example, the step S1 specifically includes:
step S11, pushing the bearing from the feeding initial end to the discharging end of the horizontal channel along the horizontal channel by a feeding cylinder;
step S12, the proximity sensor senses whether a bearing exists at the discharge end of the horizontal channel, and if the proximity sensor senses that the bearing does not exist at the discharge end, the step S11 is continued;
and S13, if the proximity sensor senses that the discharging end is provided with a bearing, the pushing cylinder pushes the bearing into a bearing positioning groove on the bearing support seat along the vertical channel from the discharging end of the horizontal channel.
In a preferred example, when the assembling cylinder is pushed, a cylinder rod of the assembling cylinder is in contact connection with the second side wall of the bearing support seat; when the assembly cylinder is not pushed, the cylinder rod of the assembly cylinder is spaced from the second side wall of the bearing support seat by a certain distance.
In a preferred example, in step S2A, the heating temperature of the bearing is 90-130 ℃, preferably 110 ℃;
and/or the output force of the cylinder rod of the assembled cylinder is 7363N at a gas pressure of 0.6 MPa.
The second aim of the invention is to provide the equipment for assembling the inner screw rod bearing of the automobile tail gate stay rod, which is matched with the method for assembling the inner screw rod bearing of the automobile tail gate stay rod.
The invention relates to an assembly device for a screw rod bearing in a support rod of an automobile tail door, which comprises the following components:
the bearing feeding groove is provided with a feeding groove channel capable of conveying a plurality of bearings in continuous arrangement;
a screw support for fixing the screw;
the bearing support seat is used for supporting the bearing and is positioned at one end side of the screw rod support frame, a first side wall of the bearing support seat is provided with a bearing positioning groove which is used for coaxially aligning the bearing with the screw rod on the screw rod support frame, and the bearing positioning groove is communicated with a feeding groove channel of the bearing feeding groove;
the assembly cylinder is arranged on the second side of the bearing support seat, and pushes the bearing support seat towards the direction of the screw rod support frame so as to press and assemble the bearing on the bearing support seat onto the screw rod on the screw rod support frame.
Preferably, the groove wall of the bearing positioning groove has:
a downhill wall into which the bearing slides down;
the arc wall is completely matched with the shape of the bearing, the arc wall is connected with the downhill wall, the lowest point of the arc wall is lower than the lowest point of the downhill wall, and the axis formed by the arc wall is coaxial with the screw rod on the screw rod supporting frame.
Preferably, the assembly device for the screw rod bearing in the automobile tail gate stay rod further comprises:
a thermocouple for heating the bearing socket, the thermocouple being inserted in the bearing socket to heat a bearing on the bearing socket to expand an inner diameter of the bearing;
when the assembly air cylinder pushes the bearing seat, an air cylinder rod of the assembly air cylinder is in contact connection with the second side wall of the bearing seat; when not pushing, the cylinder rod of the assembly cylinder is spaced from the second side wall of the bearing support seat by a certain distance.
Preferably, the feed channel of the bearing loading channel has:
the horizontal channel is arranged in parallel with the screw rod on the screw rod supporting frame and is provided with a discharging tail end;
and one end of the vertical channel is vertically communicated with the discharging tail end of the horizontal channel, and the other end of the vertical channel is communicated with the bearing positioning groove on the bearing supporting seat.
Preferably, the assembly device for the screw rod bearing in the automobile tail gate stay rod is further provided with a sliding rail assembly, and the sliding rail assembly is provided with:
the sliding rail is arranged in the same direction as the screw rod on the screw rod supporting frame;
the sliding block is arranged at the bottom of the bearing seat, and the bearing seat slides on the sliding rail by virtue of the sliding block.
Preferably, the device for assembling the lead screw bearing in the automobile tail gate stay further comprises:
the reset spring is connected with the bearing support seat at one end and the assembly cylinder at the other end, and when the assembly cylinder returns, the reset spring pulls back the bearing support seat;
and the limiting plate is arranged on the second side of the bearing support, and the limiting plate limits the bearing support to continue to pull back when the return spring pulls back the bearing support, so that the bearing positioning groove on the bearing support is communicated and connected with the vertical channel of the feeding channel.
Preferably, the bearing feeding groove further comprises:
the feeding cylinder can be arranged at the feeding start end of the horizontal channel in a telescopic way along the horizontal channel;
the proximity sensor is arranged at the discharge end of the horizontal channel and is used for sensing a bearing of the feeding cylinder pushed to the discharge end;
the pushing cylinder is vertically arranged at the discharging tail end of the horizontal channel and is used for pushing the bearing at the discharging tail end into the bearing positioning groove on the bearing supporting seat along the vertical channel.
Preferably, the screw support has: a front end fixing frame and a rear end supporting frame.
Preferably, the device for assembling the lead screw bearing in the automobile tail gate stay further comprises:
the bearing feeding groove, the screw rod supporting frame, the bearing supporting seat and the assembling cylinder are all arranged on the bottom plate;
and the detection sensor is also arranged on the bottom plate and used for detecting whether a bearing exists in the bearing positioning groove.
The assembly equipment for the screw rod bearing in the automobile tail gate stay rod is also provided with: and the temperature controller is connected with the bearing seat by a temperature control line.
The invention has the positive progress effects that:
1) According to the invention, the bearing positioning groove and the screw rod supporting frame are arranged, so that the bearing and the screw rod are coaxially positioned by the bearing positioning groove and the screw rod supporting frame, and the bearing and the screw rod are coaxially ensured during assembly, thereby reducing the damage rate of the bearing and the screw rod.
2) The bearing in the bearing positioning groove of the bearing seat is heated by the thermoelectric coupler, and the inner diameter of the bearing is enlarged after being heated, so that the bearing is easier to assemble on the screw rod.
3) The automatic feeding device is provided with the horizontal channel and the vertical channel, the feeding cylinder pushes the bearing in the horizontal channel to the vertical channel, and the pushing cylinder pushes out the bearing to slide to the bearing positioning groove, so that automatic feeding of the bearing is realized.
4) The reset spring and the limiting plate can enable the bearing positioning groove and the vertical channel to recover a communication state after one-time assembly is completed, the next feeding assembly is facilitated, the cylinder rod of the assembly cylinder is not contacted with the bearing seat, and therefore heat is prevented from being transferred to the assembly cylinder through the cylinder rod.
Drawings
FIGS. 1A to 1C are schematic perspective views of an assembly device for a screw rod bearing in a tail gate stay bar of an automobile according to the present invention;
FIG. 2A is a top view of the lead screw bearing assembly apparatus in the tail gate stay of the motor vehicle of the present invention;
FIG. 2B is a front view of the lead screw bearing assembly apparatus in the automotive tail gate stay of the present invention;
FIG. 2C is a right side view of the lead screw bearing assembly apparatus in the automotive tail gate stay of the present invention;
FIG. 2D is a left side view of the lead screw bearing assembly apparatus in the automotive tail gate stay of the present invention;
FIGS. 3A and 3B are cross-sectional views of a lead screw bearing assembly apparatus in an automotive tail gate stay of the present invention;
FIG. 4 is an enlarged schematic view of a bearing retainer groove according to the present invention;
FIG. 5A is a flow chart of a method of assembling a lead screw bearing in a tail gate stay of an automobile mated with an assembly apparatus;
fig. 5B is a detailed flowchart of step S1 of the method for assembling the lead screw bearing in the automotive tail gate stay associated with the assembly equipment.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
Fig. 1A to 1C show an assembly apparatus for a screw bearing in a tail gate stay of an automobile according to the present invention. In this example, the in-car tail gate stay lead screw bearing assembly apparatus includes a base plate 10, a bearing loading chute 20, a feed cylinder 30, a proximity sensor 40, a push cylinder 50, a lead screw support frame 60, a bearing socket 70, a detection sensor 80, and an assembly cylinder 90.
As shown in fig. 2A to 2D, the base plate 10 is a horizontally arranged platform plate, and the shape of the base plate is not limited, for example, a square platform plate can be used for bearing other components on a screw rod bearing assembly device in a tail gate stay of an automobile, and the bearing feeding groove 20, the pushing cylinder 50, the screw rod supporting frame 60, the bearing seat 70, the detection sensor 80 and the assembly cylinder 90 are all arranged on the base plate 10. The specific arrangement of these components will be described later.
The bearing loading chute 20, as the name implies, is a channel, e.g. a U-shaped chute, for loading the bearings. The bearing loading chute 20 has a feed chute 21, and a plurality of bearings arranged in parallel and in series are conveyed in the feed chute 21. The feed channel 21 has a horizontal channel 22 and a vertical channel 23. The horizontal channel 22 has a feed start 221 and a discharge end 222 and is arranged on the base plate 10 parallel to the screw on the screw support 60. One end of the vertical channel 23 is vertically communicated with the discharging end 222 of the horizontal channel 22, and the other end of the vertical channel 23 is communicated with the bearing positioning groove 73 on the bearing supporting seat 70. The feeding cylinder 30 is telescopically arranged along the horizontal channel 22 at the feeding start 221 of the horizontal channel 22. When feeding is required, the feeding cylinder 30 pushes all the bearings in the horizontal channel 22 to move towards the discharging end 222 together, and when the foremost bearing moves to the discharging end 222, the proximity sensor 40 arranged at the discharging end 222 of the horizontal channel 22 senses the bearing at the position of the discharging end 222, and the pushing cylinder 50 vertically arranged at the discharging end 222 of the horizontal channel 22 pushes the bearing at the discharging end 222 to move into the bearing positioning groove 73 on the bearing receiving seat 70 along the vertical channel 23.
The screw rod supporting frame 60 is used for fixing the screw rod in the automobile tail gate supporting rod as the name implies. The screw rod support frame 60 is provided with a front end fixing frame 61 and a rear end support frame 62, the front end fixing frame 61 is box-shaped, an openable box cover 611 and a box body 612 are arranged, the bottom of the box body 612 is fixedly arranged on the bottom plate 10, the box cover 611 is opened to place the front end of the screw rod into the box body 612, the rear end of the screw rod is supported on the rear end support frame 62, and the parts, which are contacted with the screw rod, of the box body 612 and the box cover 611 are made of oxford polyurethane, so that the screw rod can be flexibly contacted. The lead screw on the lead screw support frame 60 exposes a bearing positioning groove 73 of the lead screw head portion opposite to the bearing receiving seat 70.
The bearing receptacle 70 is provided on the base plate 10. As shown in fig. 1A and 1B, the bearing holder 70 has a first side wall 71 and a second side wall 72, the first side wall 71 being oriented to correspond to the first side, the second side wall 72 being oriented to correspond to the second side, and the first side and the second side being opposite directions. The lead screw support 60 is located on a first side of the bearing receptacle 70. The fitting cylinder 90 is provided on the second side of the bearing holder 70. The first side wall 71 of the bearing support 70 is provided with a bearing positioning groove 73, the bearing positioning groove 73 is used for coaxially aligning the bearing with the screw on the screw support frame 60, positioning is achieved, the bearing positioning groove 73 is communicated with the feeding channel 21 of the bearing feeding channel 20, and the bearing can be continuously conveyed to the bearing positioning groove 73 by the feeding channel 21 conveniently. Specifically, as shown in fig. 3A, 3B and 4, the groove wall of the bearing positioning groove 70 has a downhill wall 731 and an arc wall 732, the arc wall 732 is connected with the downhill wall 731, the lowest point of the arc wall 732 is lower than the lowest point of the downhill wall 731, the bearing pushed by the pushing cylinder 50 slides down the downhill wall 731 into the arc wall 732, the shape of the arc wall 732 is completely matched with the bearing, and thus the bearing is firmly fixed in the bearing positioning groove 73. And when the component is fixed to the base plate 10, the axis formed by the circular arc wall 732 of the bearing positioning groove 73 of the bearing holder 70 has been set coaxially with the screw on the screw support 60 in advance, that is, the bearing in the bearing positioning groove 73 is coaxial with the screw in the screw support 60. The detection sensor 80 is also disposed on the base plate 10, and when the detection sensor 80 detects that the bearing is present in the bearing positioning groove 73, the assembly cylinder 90 disposed on the second side of the bearing support 70 pushes the bearing support 70 toward the screw support 60, so that the bearing on the bearing support 70 is pressed and assembled onto the screw on the screw support 60, thereby completing the assembly.
In a further example, the present automotive tail gate stay inner lead screw bearing assembly apparatus further includes a thermocouple 11 and a temperature controller 12. The thermocouple 11 is used for heating the bearing socket 70, and the thermocouple 11 is inserted into the bearing socket 70, so as to heat the bearing socket 70, and further heat the bearing in the bearing positioning groove 73 of the bearing socket 70 to expand the inner diameter of the bearing. When the fitting cylinder 90 pushes the bearing holder 70 from the second side, the cylinder rod of the fitting cylinder 90 is in contact connection with the second side wall 72 of the bearing holder 70. The temperature controller 12 is connected with the bearing holder 70 by a temperature control line for controlling the heating temperature of the thermocouple 11.
In this example, the automotive tailgate stay inner lead screw bearing assembly device also has a slide rail assembly 13. The slide rail assembly 13 includes a slide rail 131 and a slider 132. The slide rail 131 is fixed on the base plate 10 and is located on the extension line of the screw on the screw support frame 60, the slider 132 is arranged at the bottom of the bearing holder 70, and the bearing holder 70 slides on the slide rail 131 by means of the slider 132.
When the assembly cylinder 90 does not push the bearing socket 70, the cylinder rod of the assembly cylinder 90 is spaced from the second sidewall 72 of the bearing socket 70 by a certain distance, thereby preventing heat from being transferred to the assembly cylinder 90 through the cylinder rod. However, in order to reset the position of the pushed-out bearing socket 70. The assembly equipment for the screw rod bearing in the automobile tail gate stay rod also comprises a return spring 14 and a limiting plate 15. One end of the return spring 14 is connected with the bearing socket 70, the other end is connected with the assembling cylinder 90, and when the cylinder rod of the assembling cylinder 90 returns, the elastic force of the return spring 14 pulls the bearing socket 70 to slide on the sliding rail 131 towards the direction of the assembling cylinder 90, namely, the return spring 14 pulls the bearing socket 70 back; the limiting plate 15 is arranged on the bottom plate 10 and is positioned on the second side of the bearing holder 70, when the reset spring 14 pulls back the bearing holder 70, the limiting plate 15 limits the bearing holder 70 to continue pulling back, firstly, the bearing holder 70 can be prevented from contacting the assembly cylinder 90, secondly, the bearing positioning groove 73 on the bearing holder 70 can be communicated and connected with the vertical channel 23 of the feeding channel 21, so that the feeding assembly can be continued.
As shown in fig. 5A to 5B, the assembling method matched with the screw rod bearing assembling equipment in the automobile tail gate stay rod comprises the following specific steps:
step S1: the bearings enter the bearing positioning slots 73 of the bearing mount 70 along the feed channel 21 of the bearing feed channel 20 and cause the bearings in the bearing positioning slots 73 to coaxially align with the lead screw on the lead screw support frame 60. Specifically, the method comprises the following steps:
step S11, pushing the bearing from the feeding initial end 221 to the discharging end 222 of the horizontal channel 22 along the horizontal channel 22 by the feeding cylinder 30;
step S12, the proximity sensor 40 senses whether the discharging end 222 of the horizontal channel 22 has a bearing or not, and if the proximity sensor 40 senses that the discharging end 222 has no bearing, the step S11 is continued;
step S13, if the proximity sensor 40 senses that the discharge end 222 is provided with a bearing, the pushing cylinder 50 pushes the bearing into the bearing positioning groove 73 on the bearing support 70 along the vertical channel 23 from the discharge end 222 of the horizontal channel 22;
step S2A, T is performed by thermocouple 11 inserted into bearing holder 70 S2A Is used for heating the bearing support seat 70 from the temperatureAnd the bearing on the bearing mount 70 is heated to expand the inner diameter of the bearing;
step S2B, detecting whether the bearing completely enters the bearing positioning groove 73 of the bearing supporting seat 70 by the detection sensor 80; if the detection sensor 80 detects that there is no bearing in the bearing positioning groove 73, the process proceeds to step S12, and if the detection sensor 80 detects that there is a bearing in the bearing positioning groove 73, the process proceeds to step S2;
in step S2, the second side wall 72 of the bearing holder 70 is pushed by the assembly cylinder 90 toward the screw support 60, so that the bearing on the bearing holder 70 is press-assembled onto the screw on the screw support 60.
Specifically, the second sidewall 72 of the bearing socket 70 is contacted by the cylinder rod of the assembly cylinder 90 in the direction of the lead screw support 60 by F S2 The second side of the bearing socket 70 is pushed by the interference fit press-in force to press-fit the bearing on the bearing socket 70 onto the screw on the screw support 60;
step S3, after the assembly of the step S2 is completed, the bearing support 70 is pulled back by the return spring 14 until the bearing positioning groove 73 on the bearing support 70 is communicated with the vertical groove 23 of the feeding groove 21 and is limited by the limiting plate 15, so that the next bearing is ready to be installed in the bearing positioning groove 73; during this process, the cylinder rod of the fitting cylinder 90 is retracted independently and maintained at a distance from the second side wall 72 of the bearing socket 70.
In the present invention, F S2 For an interference fit press-in force, i.e. the force with which the bearing of example 1 is fitted to the screw; the output force of the assembling cylinder is the maximum force which can be output by the assembling cylinder, the output force of the assembling cylinder under the air pressure of 0.6Mpa is 7363N, that is to say, under the air pressure of 0.6Mpa, the assembling cylinder can select proper interference fit pressing force in the range of 0-7363N for assembling different types of bearings.
TABLE 1
| Parameters (parameters) | Example 1 |
| T S2A | 110℃ |
| F S2 | 5129N |
| Diameter of combination | 8mm |
| Length of bond | 8mm |
| Maximum interference | 0.02mm |
| Modulus of elasticity of the container | 225000N/mm 2 |
| Modulus of elasticity of the contained member | 225000N/mm 2 |
| Outer diameter of container | 24mm |
| Inner diameter of the contained member | 0 |
| Poisson coefficient | 0.31 |
| Coefficient of friction | 0.1 |
| Coefficient C i | 0.69 |
| Coefficient C 2 | 1.56 |
| Maximum unit pressure of joint surface | 250N/mm 2 |
| Air pressure | 0.6Mpa |
Assembling results: example 1 successfully assembled, the bearings and lead screw were not damaged.
The temperature of the bearing heating is generally controlled between 0 DEG and 300 deg. The temperature is set to be most proper at the temperature of about 110 ℃, so that the bearing is easy to anneal and damage. Too low a temperature may not be installed and affect efficiency. According to the results of table 1, a heating temperature of 110 ° of the recommended setting is possible.
In summary, the bearing positioning groove 73 and the screw rod supporting frame 60 are adopted to realize the positioning of the bearing and the screw rod, so that the damage rate of the bearing and the screw rod is reduced, and the bearing on the bearing positioning groove 73 can be smoothly assembled on the screw rod supporting frame 60 by adopting the assembling method matched with the assembling equipment.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the embodiments are not to be interpreted as limiting the invention, which is defined by the appended claims.
Claims (10)
1. The method for assembling the lead screw bearing in the automobile tail gate stay bar is characterized by comprising the following steps of:
step S1: the bearing enters a bearing positioning groove of the bearing seat along a feeding groove of a bearing feeding groove, and the bearing in the bearing positioning groove is coaxially aligned with a screw on the screw support frame;
step S2: the second side of the bearing support seat is pushed towards the direction of the screw rod support frame by the assembling air cylinder so as to press-assemble the bearing on the bearing support seat onto the screw rod on the screw rod support frame.
2. The method for assembling the inner screw bearing of the automobile tail gate stay rod according to claim 1, wherein the method is realized by adopting an assembling device of the inner screw bearing of the automobile tail gate stay rod, and the assembling device of the inner screw bearing of the automobile tail gate stay rod comprises the following steps:
the bearing feeding groove is provided with a feeding groove channel capable of conveying a plurality of bearings in continuous arrangement;
a screw support for fixing the screw;
the bearing support seat is used for supporting the bearing and is positioned at one end side of the screw rod support frame, a first side wall of the bearing support seat is provided with a bearing positioning groove which is used for coaxially aligning the bearing with the screw rod on the screw rod support frame, and the bearing positioning groove is communicated with a feeding groove channel of the bearing feeding groove;
the assembly cylinder is arranged on the second side of the bearing support seat, the assembly cylinder pushes the bearing support seat towards the direction of the screw rod support frame, and then the bearing on the bearing support seat is assembled on the screw rod support frame in a jacking mode.
3. The method for assembling a lead screw bearing in a tail gate stay of an automobile according to claim 2, wherein the groove wall of the bearing positioning groove has:
a downhill wall into which the bearing slides down;
the arc wall is completely matched with the shape of the bearing, the arc wall is connected with the downhill wall, the lowest point of the arc wall is lower than the lowest point of the downhill wall, and the axis formed by the arc wall is coaxial with the screw rod on the screw rod supporting frame.
4. A method of assembling a lead screw bearing in a tail gate stay of an automobile as claimed in claim 3, said method further comprising:
step S2A, before step S2, the bearing socket is heated by a thermocouple inserted in the bearing socket, thereby heating the bearing on the bearing socket to expand the inner diameter of the bearing.
5. The method for assembling the lead screw bearing in the stay of the tail gate of an automobile as claimed in claim 4, wherein
And S2, pushing the second side of the bearing support seat towards the direction of the screw rod support frame by the cylinder rod of the assembly cylinder to contact the second side wall of the bearing support seat, and then jacking and assembling the bearing on the bearing support seat onto the screw rod on the screw rod support frame.
6. The method of assembling a lead screw bearing in a tail gate stay of an automobile of claim 4, further comprising:
step S2B, after the step S1 and before the step S2, detecting whether the bearing completely enters a bearing positioning groove of the bearing supporting seat or not by a detection sensor; if the detection sensor detects that no bearing is in the bearing positioning groove, the step S1 is continued, and if the detection sensor detects that the bearing is in the bearing positioning groove, the step S2 is continued.
7. The method for assembling the lead screw bearing in the automobile tail gate stay of claim 5, wherein
The assembly equipment for the screw rod bearing in the automobile tail gate stay rod is also provided with: the device comprises a bearing supporting seat, a bearing assembly cylinder, a reset spring and a limiting plate, wherein one end of the reset spring is connected with the bearing supporting seat, and the other end of the reset spring is connected with the assembly cylinder; the limiting plate is arranged on the second side of the bearing supporting seat;
the method further comprises the steps of: step S3, after the assembly in the step S2 is completed, the bearing supporting seat is pulled back by the reset spring until a bearing positioning groove on the bearing supporting seat is communicated with a vertical channel of the feeding channel and is limited by the limiting plate, so that the next bearing is ready to be installed in the bearing positioning groove; during this process, the cylinder rod of the fitting cylinder is retracted independently and at a distance from the second side wall of the bearing socket.
8. The method for assembling the lead screw bearing in the automobile tail gate stay according to claim 1, wherein the step S1 specifically comprises:
step S11, pushing the bearing from the feeding initial end to the discharging end of the horizontal channel along the horizontal channel by a feeding cylinder;
step S12, the proximity sensor senses whether a bearing exists at the discharge end of the horizontal channel, and if the proximity sensor senses that the bearing does not exist at the discharge end, the step S11 is continued;
and S13, if the proximity sensor senses that the discharging end is provided with a bearing, the pushing cylinder pushes the bearing into a bearing positioning groove on the bearing support seat along the vertical channel from the discharging end of the horizontal channel.
9. The method for assembling the lead screw bearing in the automobile tail gate stay rod according to claim 1, wherein when the assembling cylinder is pushed, a cylinder rod of the assembling cylinder is in contact connection with the second side wall of the bearing support seat; when the assembly cylinder is not pushed, the cylinder rod of the assembly cylinder is spaced from the second side wall of the bearing support seat by a certain distance.
10. The method for assembling the lead screw bearing in the stay of the tail gate of an automobile as claimed in claim 4, wherein
In the step S2A, the heating temperature of the bearing is 90-130 ℃, preferably 110 ℃;
and/or the output force of the assembled cylinder is 7363N at a gas pressure of 0.6 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311775731.9A CN117697380B (en) | 2023-12-21 | 2023-12-21 | Method for assembling lead screw bearing in automobile tail door stay bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311775731.9A CN117697380B (en) | 2023-12-21 | 2023-12-21 | Method for assembling lead screw bearing in automobile tail door stay bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117697380A true CN117697380A (en) | 2024-03-15 |
| CN117697380B CN117697380B (en) | 2024-07-12 |
Family
ID=90144162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311775731.9A Active CN117697380B (en) | 2023-12-21 | 2023-12-21 | Method for assembling lead screw bearing in automobile tail door stay bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117697380B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117697381A (en) * | 2023-12-21 | 2024-03-15 | 领科汇智科技有限公司 | Lead screw bearing assembly equipment in automobile tail gate stay bar |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010281219A (en) * | 2009-06-02 | 2010-12-16 | Mitsubishi Electric Corp | Mounting method of coaxial bearing for rotary compressor, the rotary compressor and device for coaxial bearing assembly for the rotary compressor |
| KR20130081815A (en) * | 2012-01-10 | 2013-07-18 | 주식회사 아트에프엠 | The bearing assembly method of the knuckle using the bearing heater |
| DE202015103174U1 (en) * | 2015-06-17 | 2015-06-29 | Wen-Hsiang Chou | Improved positioning of the screw rod of clamp holders |
| CN204843446U (en) * | 2015-06-15 | 2015-12-09 | 湖州师范学院 | Automatic assembly device of bearing of bassinet wheel |
| CN207681874U (en) * | 2017-12-11 | 2018-08-03 | 珠海市精实测控技术有限公司 | Four axis track bearing hot presses |
| KR20190038741A (en) * | 2017-09-30 | 2019-04-09 | 헝디엔 그룹 인누어보 일렉트릭 컴퍼니 리미티드 | Automatic presser for motor end cover and bearing |
| CN212183363U (en) * | 2020-04-28 | 2020-12-18 | 东莞市万江威利微电机有限公司 | Motor bearing assembly devices |
| CN212497524U (en) * | 2020-04-26 | 2021-02-09 | 领科汇智科技有限公司 | Car tail-gate vaulting pole lead screw and little aluminum pipe rigging equipment |
| CN115106750A (en) * | 2022-06-15 | 2022-09-27 | 浙江鼎通汽车科技有限公司 | Automatic assembly mechanism for screw rod bearing and bearing seat |
| CN218136162U (en) * | 2022-06-14 | 2022-12-27 | 浙江鼎通汽车科技有限公司 | Automatic assembly mechanism for screw rod bearing block |
| CN220029301U (en) * | 2023-06-05 | 2023-11-17 | 苏州希麦智能科技有限公司 | Full-automatic locating pin press-fitting structure |
| CN117697381A (en) * | 2023-12-21 | 2024-03-15 | 领科汇智科技有限公司 | Lead screw bearing assembly equipment in automobile tail gate stay bar |
-
2023
- 2023-12-21 CN CN202311775731.9A patent/CN117697380B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010281219A (en) * | 2009-06-02 | 2010-12-16 | Mitsubishi Electric Corp | Mounting method of coaxial bearing for rotary compressor, the rotary compressor and device for coaxial bearing assembly for the rotary compressor |
| KR20130081815A (en) * | 2012-01-10 | 2013-07-18 | 주식회사 아트에프엠 | The bearing assembly method of the knuckle using the bearing heater |
| CN204843446U (en) * | 2015-06-15 | 2015-12-09 | 湖州师范学院 | Automatic assembly device of bearing of bassinet wheel |
| DE202015103174U1 (en) * | 2015-06-17 | 2015-06-29 | Wen-Hsiang Chou | Improved positioning of the screw rod of clamp holders |
| KR20190038741A (en) * | 2017-09-30 | 2019-04-09 | 헝디엔 그룹 인누어보 일렉트릭 컴퍼니 리미티드 | Automatic presser for motor end cover and bearing |
| CN207681874U (en) * | 2017-12-11 | 2018-08-03 | 珠海市精实测控技术有限公司 | Four axis track bearing hot presses |
| CN212497524U (en) * | 2020-04-26 | 2021-02-09 | 领科汇智科技有限公司 | Car tail-gate vaulting pole lead screw and little aluminum pipe rigging equipment |
| CN212183363U (en) * | 2020-04-28 | 2020-12-18 | 东莞市万江威利微电机有限公司 | Motor bearing assembly devices |
| CN218136162U (en) * | 2022-06-14 | 2022-12-27 | 浙江鼎通汽车科技有限公司 | Automatic assembly mechanism for screw rod bearing block |
| CN115106750A (en) * | 2022-06-15 | 2022-09-27 | 浙江鼎通汽车科技有限公司 | Automatic assembly mechanism for screw rod bearing and bearing seat |
| CN220029301U (en) * | 2023-06-05 | 2023-11-17 | 苏州希麦智能科技有限公司 | Full-automatic locating pin press-fitting structure |
| CN117697381A (en) * | 2023-12-21 | 2024-03-15 | 领科汇智科技有限公司 | Lead screw bearing assembly equipment in automobile tail gate stay bar |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117697381A (en) * | 2023-12-21 | 2024-03-15 | 领科汇智科技有限公司 | Lead screw bearing assembly equipment in automobile tail gate stay bar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117697380B (en) | 2024-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117697380B (en) | Method for assembling lead screw bearing in automobile tail door stay bar | |
| CN117697381A (en) | Lead screw bearing assembly equipment in automobile tail gate stay bar | |
| CN110238654B (en) | Automatic assembling riveting machine for USB interface | |
| CN115722917A (en) | Pulling aid assembling equipment and method | |
| US6100706A (en) | Burn-in board support frame having inserter and ejector bars for racks of burn-in boards | |
| CN113290367B (en) | Motor assembling process, press-fitting device and assembling production line | |
| CN116475640B (en) | Automatic welding robot's of auto parts device of going up | |
| CN218908988U (en) | Automatic discharging device | |
| CN117748853A (en) | Core sleeve press-fitting equipment | |
| CN115732266A (en) | Relay movable spring assembling device and relay push rod assembly equipment | |
| JPH0714659A (en) | Cable terminal supply and crimper device | |
| CN111085847B (en) | Automobile air conditioner air outlet assembly line | |
| CN113579123A (en) | Assembly equipment of WIFI antenna | |
| CN108942167B (en) | Press-in machine with snap ring guide mechanism | |
| CN111702484A (en) | Automatic oiling assembly tool for middle handrail guide arm | |
| CN220050742U (en) | Core steel ball assembling mechanism in clamping cap and core automatic feeding and assembling device thereof | |
| CN220420839U (en) | Battery glue pulling nail equipment and lithium battery production system | |
| CN213932241U (en) | Ply-yarn drill assembly devices and electron detonator production facility | |
| CN113681281B (en) | Automatic assembling system with multiple matched molds | |
| CN109688786B (en) | High-precision component inserter | |
| CN114583527A (en) | Terminal pin inserting equipment | |
| CN104275588A (en) | Wear plate installing device | |
| CN117984098B (en) | Automatic assembling equipment and process for automobile air conditioner | |
| CN215786438U (en) | Assembly equipment of WIFI antenna | |
| CN115256787B (en) | Method and equipment for manufacturing air outlet blade |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |