Bearing assembling tool, bearing gluing device and bearing mounting device

Abstract

The utility model relates to a bearing assembling tool which comprises a tool head, a pressing rod and a locating face, the pressing rod is arranged on the end face of the tool head, the pressing rod and the tool head are coaxially arranged, the locating face is arranged on the end face of the tool head, the locating face and the pressing rod are located on the same side of the tool head, and the locating face is used for providing a locating contact plane for a bearing on the pressing rod. According to the bearing assembling tool, the pressing rod is arranged on the tool head, the bearing is installed on the pressing rod, the tool head is fixed to the gluing device, the outer wall of the bearing can be evenly glued, the glued bearing is pre-installed on the bearing installation device through the pressing rod, the bearing is pulled up through the pressing rod, the bearing is not prone to falling off, and the bearing is prevented from being damaged; and a plurality of bearings can be glued at the same time, glue liquid is prevented from entering the bearings, especially gaps between the bearings, then pressure is applied to the bearings through the positioning surface, the bearings are pressed into parts, the bearings are stressed uniformly, and the bearing installation consistency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing assembly technical field, in particular to a bearing assembly tool, bearing glue coating device and bearing mounting device. BACKGROUND

[0002] In recent years, due to the promotion of infrared technology and superconducting electronics, the development of stirling cryocooler becomes popular, and it is one of the highest efficiency small refrigerators at present. Due to the compact structure and high efficiency of the overall rotary stirling cryocooler, it has been widely used in military and aviation fields and has attracted widespread attention of various countries. Since the development, through decades of development, the overall rotary stirling cryocooler gradually matures after solving the problems of bearing life, pollution, sealing and material, and the service life increases from the initial several hundred hours to the current ten thousand hours.

[0003] The overall rotary stirling cryocooler is driven by a rotating motor to drive the compression piston and the expander reciprocating motion. In this process, the bearing constitutes a rotating attachment, connects the eccentric shaft and the compression piston and the expander components, and affects the service life of the stirling cryocooler.

[0004] Current statistics show that one of the reasons for the failure of the cryocooler is the failure of the bearing. Bearing failure is generally divided into stop failure and loss of precision failure. The stop failure refers to the termination of rotation caused by bearing jamming, fracture, etc. The loss of precision failure refers to the change of bearing size gap caused by corrosion, wear, etc. Non-normal rotation of the bearing.

[0005] At present, the bearing glue coating and installation process often causes the bearing to fall to the ground or the bearing surface to be scratched due to improper operation, and the bearing is accelerated to damage after running for a period of time, resulting in failure of the cryocooler. INVENTION CONTENTS

[0006] The utility model provides a bearing assembly tool, bearing glue coating device and bearing mounting device for solving at least one of the above technical problems.

[0007] The utility model provides a bearing assembly tool, which comprises:

[0008] Tool head;

[0009] Pressing rod, the pressing rod is arranged on the end face of the tool head, and the pressing rod is coaxially arranged with the tool head;

[0010] Positioning surface, the positioning surface is arranged on the end face of the tool head, and the positioning surface is located on the same side of the tool head with the pressing rod, and is used for providing a positioning contact plane for the bearing on the pressing rod.

[0011] In one embodiment, a snap spring is operatively arranged on the pressing rod.

[0012] In one embodiment, the side of the tool head is provided with a window, the window is located at the same end of the tool head as the positioning surface, and the window is at least two distributed in the circumferential direction of the tool head;

[0013] In the axial direction of the tool head, the bottom surface of the window is below the positioning surface.

[0014] In one embodiment, the end surface of the tool head is integrally formed with a shaft shoulder, the size of the shaft shoulder is greater than the size of the pressing rod, the pressing rod is integrally formed on the shaft shoulder, and the top surface of the shaft shoulder is below the positioning surface.

[0015] In one embodiment, the outer circle of the shaft shoulder is located between the outer circle and the inner circle of the bearing.

[0016] The utility model also provides a bearing gluing device, which comprises:

[0017] A base;

[0018] A motor is fixedly arranged on the base, and the rotating shaft of the motor is parallel to the top surface of the base.

[0019] A rotating drum is coaxially arranged on the rotating shaft of the motor.

[0020] A glue tank is fixedly arranged on the base, the rotating drum is located directly above the glue tank, and the side surface of the rotating drum is partially immersed in the glue.

[0021] A support is fixedly arranged on the base.

[0022] A chuck is fixedly arranged on the support, the chuck is used for clamping the tool head in any one of the above technical solutions, the chuck is operable to clamp the tool head, the pressing rod is parallel to the rotating shaft of the motor, the bearing is mounted on the pressing rod, and the outer side surface of the bearing is pressed against the outer side surface of the rotating drum.

[0023] In one embodiment, the support comprises a linear guide rail and a rotary platform, the rotary platform is fixedly arranged on the base, the linear guide rail is fixedly arranged on the table top of the rotary platform, and the chuck is fixedly arranged on the sliding block of the linear guide rail.

[0024] The utility model also provides a bearing mounting device, which comprises:

[0025] A mounting seat;

[0026] The mounting hole is used for positioning the tooling of any one of the above technical solutions, and the pressing rod is operatively inserted into the mounting hole.

[0027] The boss is arranged on the top surface of the mounting seat, the boss is coaxially arranged with the mounting hole, the mounting hole passes through the boss, and the boss is used for fixing a part.

[0028] In one embodiment, the outer ring of the positioning surface is provided with a retainer ring, the retainer ring is coaxially arranged with the pressing rod, and the inner diameter of the retainer ring is greater than the outer diameter of the bearing.

[0029] In one embodiment, when the retainer ring is in contact with the part, the bearing has a gap with the top surface of the boss.

[0030] Compared with the prior art, the utility model has the advantages that:

[0031] The bearing assembly tool provided by the utility model is provided with a pressing rod on a tool head, a bearing is mounted on the pressing rod, the tool head is fixed on a glue coating device, the outer wall of the bearing can be uniformly coated with glue, the bearing coated with glue is preassembled on a bearing mounting device through the pressing rod, the bearing is not easy to fall off through the pressing rod, bearing damage is avoided, a plurality of bearings can be simultaneously coated with glue, glue liquid is prevented from entering the inside of the bearing, especially the gap between the bearings, then the bearing is pressed into a part through a positioning surface, the bearing bears force uniformly, and bearing installation consistency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0032] In the following, the utility model will be described in more detail based on the embodiments and with reference to the drawings.

[0033] Figure 1 It is a schematic view of the overall structure of the bearing assembly tool in the utility model;

[0034] Figure 2 It is a sectional view of the bearing assembly tool in the utility model;

[0035] Figure 3 It is a schematic view of the overall structure of the bearing glue coating device in the utility model;

[0036] Figure 4 It is a schematic view of the overall structure of the bearing mounting device in the utility model;

[0037] Figure 5 It is a schematic view of the cooperation state of the tooling and the part on the bearing mounting device in the utility model;

[0038] Figure 6 It is a sectional view of the cooperation state of the tooling and the part on the bearing mounting device in the utility model.

[0039] Reference signs:

[0040] 10 - tool; 11 - tool head; 12 - pressing rod; 13 - locating surface; 14 - circlip; 15 - retainer; 16 - window; 17 - shaft shoulder; 18 - first gap; 19 - second gap;

[0041] 21 - base; 22 - motor; 23 - rotating drum; 24 - glue tank; 25 - support; 251 - linear guide rail; 252 - rotating platform; 26 - chuck;

[0042] 31 - mounting seat; 32 - mounting hole; 33 - boss; 34 - third gap;

[0043] 40 - bearing;

[0044] 50 - part. DETAILED DESCRIPTION

[0045] The utility model will be further described in connection with the drawings.

[0046] As Figure 1 , Figure 2 shown, the utility model provides a bearing assembly tool, tool 10 includes: tool head 11, pressing rod 12 and locating surface 13, pressing rod 12 sets up on the end face of tool head 11, and pressing rod 12 is coaxial with tool head 11, and locating surface 13 sets up on the end face of tool head 11, and locating surface 13 is located the same side with pressing rod 12 in tool head 11, and is used to provide the contact plane of locating for bearing 40 on pressing rod 12.

[0047] Pressing rod is made of 304 stainless steel material, and the cylindricity requirement of pressing rod is 0.003mm, and the hardness after heat treatment reaches HRC55-60, which guarantees the position degree and strength in use.

[0048] Pressing rod 12 is arranged on tool head 11, bearing 40 is installed on pressing rod 12, tool head 11 is fixed on glue coating device, and the outer wall of bearing 40 can be evenly coated with glue, and bearing 40 after coating with glue is preassembled on bearing 40 mounting device through pressing rod 12, bearing 40 is put up by pressing rod 12 and is not easy to fall off, which avoids damaging bearing 40, and a plurality of bearings 40 can be coated with glue at the same time, avoids that glue enters the inside of bearing 40, especially the gap between bearings 40, then bearing 40 is pressed into part 50 through locating surface 13, bearing 40 is uniformly stressed, and the consistency of bearing 40 installation is improved.

[0049] Before the glue is applied, first pass through a clamp spring 14 on the pressure rod 12, the bearing 40 is worn on the pressure rod 12, in this embodiment, the pressure rod 12 is provided with two bearings 40, after the two bearings 40 contact the clamp spring 14, pass through a clamp spring 14 on the pressure rod 12 again, the two bearings 40 are limited between the two clamp springs 14, which plays a role in tightening the bearing 40, to ensure that the two bearings 40 are closely attached and fixed on the pressure rod 12, preventing the bearing 40 from sliding on the pressure rod 12, making the bearing 40 more stable when gluing.

[0050] Preferably, a retainer 15 is provided on the outer ring of the positioning surface 13, so that the positioning surface 13 and the retainer 15 form a step, the size of the retainer 15 is larger than that of the positioning surface 13, the retainer 15 is coaxially arranged with the pressure rod 12, the inner diameter of the retainer 15 is larger than the outer diameter of the bearing 40, when the bearing 40 is installed, the bearing 40 contacts the positioning surface 13, so that there is a first gap 18 between the outer side of the bearing 40 and the inner side of the retainer 15, preventing the glue on the outer side of the bearing 40 from being wiped off by the retainer 15, ensuring that the applied glue does not overflow, and the retainer 15 contacts the part 50, so that the installation depth of the bearing 40 is uniform, ensuring the consistency of the installation of the bearing 40.

[0051] Preferably, a window 16 is provided on the side of the tool head 11, the window 16 and the positioning surface 13 are located at the same end of the tool head 11, i.e. the end provided with the pressure rod 12, the number of windows 16 can be multiple, in this embodiment, the number of windows 16 is two, it can also be three, four or five, the windows 16 are evenly distributed in the circumferential direction of the tool head 11, so that when the bearing 40 is installed, the probe can provide a downward pressure on the bearing 40, making the downward pressure on the bearing 40 more uniform, preventing the pressure rod 12 from being pulled out and affecting the coaxiality of the circumferential bearing 40 and the part 50;

[0052] In the axial direction of the tool head 11, the bottom surface of the window 16 is located below the positioning surface 13, i.e. a distance is provided between the bottom surface of the window 16 and the positioning surface 13, the window 16 is used to provide operating space for pressing the bearing 40.

[0053] Preferably, a shaft shoulder 17 is provided on the end surface of the tool head 11, in this embodiment, the pressure rod 12, the shaft shoulder 17 and the tool head 11 are integrally formed, the pressure rod 12 is arranged on the shaft shoulder 17, and the size of the shaft shoulder 17 is larger than that of the pressure rod 12, the provision of the shaft shoulder 17 reduces the size span between the pressure rod 12 and the tool head 11, making the pressure rod 12 and the tool head 11 transition smoothly, reducing stress concentration, improving the rigidity between the pressure rod 12 and the tool head 11, and preventing the pressure rod 12 from deforming; the top surface of the shaft shoulder 17 is located below the positioning surface 13, when the bearing 40 is installed, the bearing 40 contacts the positioning surface 13, so that the bearing 40 and the shaft shoulder 17 have a second gap 19, the inner ring of the bearing 40 is not subjected to the pressure of the shaft shoulder 17, and only the outer ring of the bearing 40 is subjected to the pressure.

[0054] Further, the outer ring of the shaft shoulder 17 is located between the outer ring and the inner ring of the bearing 40, when the bearing 40 is installed, only the outer ring of the bearing 40 is pressed by the positioning surface 13, so that the inner ring of the bearing 40 is not forced when the bearing 40 is installed, and the inner track of the bearing 40 is not deformed.

[0055] As shown in Figures 1-3 The utility model discloses a bearing gluing device, including base 21, motor 22, rotary drum 23, glue liquid pool 24, support 25 and chuck 26, and motor 22 adopts stepping motor 22 in the utility model, and base 21 can be arranged as L type, installs motor 22 on the vertical board of L type base 21, or installs motor 22 on base 21 through the frame, makes the rotary shaft of motor 22 and base 21 have certain interval, installs rotary drum 23 on the rotary shaft of motor 22, and glue liquid pool 24 is fixedly arranged on base 21, fills with glue liquid in glue liquid pool 24, makes rotary drum 23 be located the just above of glue liquid pool 24, because the rotary shaft of motor 22 and base 21 have certain interval, the bottom surface of rotary drum 23 and glue liquid pool 24 can pass through design a size, make the bottom surface of rotary drum 23 and glue liquid pool 24 have certain interval, always guarantee that a part of the side of rotary drum 23 is immersed in glue liquid in the process of rotary drum 23 rotation;

[0056] The bearing assembly tool 10 is fixed through the chuck 26, the chuck 26 in the embodiment adopts three-jaw chuck, and the three-jaw chuck is a prior art product, and its specific structure and working principle are maturely used by those skilled in the art, and will not be repeated here, the tool 10 is clamped by the three-jaw chuck, specifically, the tool head 11 is clamped through the clamping jaw of the three-jaw chuck, the pressure rod 12 with the bearing 40 installed is parallel to the rotary shaft of the motor 22, the bearing 40 is pressed on the outer side surface of the rotary drum 23, and the glue is applied on the outer side surface of the bearing 40 by driving the rotary disc to rotate by the motor 22.

[0057] Further, the support 25 includes a linear guide rail 251 and a rotary platform 252, and the linear guide rail 251 and the rotary platform 252 are prior art products, and their specific structure and working principle are maturely used by those skilled in the art, and will not be repeated here, the rotary platform 252 is fixedly arranged on the base 21, the linear guide rail 251 is vertically fixedly arranged on the table top of the rotary platform 252, and then the chuck 26 is installed on the sliding block of the linear guide rail 251, the horizontal position of the tool is adjusted through the rotary platform 252, and the numerical position of the tool is adjusted through the linear guide rail 251, so that the bearing 40 is pressed on the outer side surface of the rotary drum 23, the adjustment is more convenient, and the adaptation range is wide.

[0058] In the process of coating, first, a circlip 14 is inserted into the pressure rod 12, then two micro bearings 40 are inserted into the pressure rod 12, and then another circlip 14 is inserted into the pressure rod 12, and the two circlips 14 are tightened to tightly constrain the two micro bearings 40, so that the two bearings can be coated at the same time, and the glue liquid is prevented from entering between the two bearings and the inside of the bearings during the installation process; the tool head 11 is clamped on the three-jaw chuck 26, the position of the bearing 40 is adjusted through the linear guide rail 251 and the rotary platform 252, so that the outer surface of the bearing 40 is tightly attached to the rotating drum 23, a part below the rotating drum 23 is soaked in the anaerobic glue liquid, the rotating drum 23 is driven to rotate by the stepping motor 22, so that the rotating drum 23 absorbs the glue liquid in the glue liquid pool 24, and the glue liquid is applied to the outer surface of the bearing 40 through the relative rotation of the rotating drum 23 and the bearing 40. The amount of glue liquid on the surface of the bearing 40 is controlled by the contact force between the bearing 40 and the rotating drum 23. When the contact force between the bearing 40 and the rotating drum 23 is large, the contact between them is tight, and the amount of glue liquid on the surface of the bearing 40 will be less. The amount of glue liquid on the surface of the bearing can be controlled. After the bearing 40 is coated, the bearing 40 is separated from the rotating drum 23 through the linear guide rail 251 and the rotary platform 252, and then the tool is removed for subsequent operation.

[0059] As shown in Figure 1 、 Figure 2 、 Figures 3-6 The utility model also provides a bearing installation device, including the mounting seat 31, the mounting hole 32 is set up perpendicular to the end surface of the mounting seat 31 on the top surface of mounting seat 31, the number of mounting hole 32 can be set to multiple, the mounting hole 32 is set up perpendicular to the end surface of the mounting seat 31, when installing bearing 40, the pressure rod 12 can be inserted into the mounting hole 32, the mounting hole 32 position of the mounting seat 31 top surface is provided with boss 33, boss 33 is provided with the coaxial setting of mounting hole 32, mounting hole 32 passes through boss 33, boss 33 is used to fix parts 50, the coaxial degree of boss and mounting hole is 0.003mm.

[0060] Further, in the tool, the outer circle of the positioning surface 13 is provided with a guard ring 15, so that the positioning surface 13 and the guard ring 15 form a step, the size of the guard ring 15 is larger than that of the positioning surface 13, the guard ring 15 is coaxial with the pressure rod 12, the inner diameter of the guard ring 15 is larger than the outer diameter of the bearing 40, when the bearing 40 is installed, the bearing 40 is in contact with the positioning surface 13, so that there is a first gap 18 between the outer side surface of the bearing 40 and the inner side surface of the guard ring 15, which prevents the glue liquid on the outer side surface of the bearing 40 from being wiped off by the guard ring 15, ensures that the applied glue liquid does not overflow, and the guard ring 15 is in contact with the parts 50, so that the installation depth of the bearing 40 is uniform, ensuring the consistency of the installation of the bearing 40.

[0061] Further, when the retainer 15 contacts the part 50, the bearing 40 has a third gap 34 with the top surface of the boss 33, during the pressing process of the bearing 40, the excess glue on the side surface of the bearing 40 flows into the third gap 34, preventing the glue from entering the inside of the bearing 40.

[0062] During the installation of the bearing 40, first, the tool 10 is removed from the chuck 26, then the clamp spring 14 on the pressing rod 12 is removed, the part 50 is fixed on the mounting seat 31, the part 50 is positioned by the boss 33, the pressing rod 12 penetrates into the mounting hole 32, the boss 33 and the mounting hole 32 ensure high coaxiality during processing, thereby ensuring the coaxiality of the part 50 and the bearing 40 during installation, the tool head 11 is pressed downward, the positioning surface 13 provides pressure for the outer ring of the bearing 40, the positioning surface 13 provides positioning for the bearing, so that the position degree of the bearing during installation is high, the bearing 40 is pressed into the part 50, when the retainer 15 contacts the part 50, the bearing 40 has a third gap 34 with the top surface of the boss 33, which is used to accommodate the excess glue on the side surface of the bearing 40 during the pressing process, avoiding the glue entering the inside of the bearing 40 at the bottom, causing the bearing 40 to be scrapped, then the probe presses the bearing 40 through the window 16, the tool 10 is pulled up, avoiding the position of the bearing 40 moving in the part 50, after the pressing rod 12 is removed, the part 50 with the bearing 40 is removed, at this time the bearing 40 is not installed in place, the glue on the part 50 is removed, the dust-free paper and the flat pad are placed on both sides of the bearing 40 and the part 50, the hand plate press is used to press the bearing 40 into place, the dust-free paper can absorb the excess glue, ensuring that it does not enter the inside of the bearing 40, avoiding the bearing being clamped by other devices, avoiding the surface of the bearing being scratched, and realizing the lossless installation of the bearing 40.

[0063] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A bearing assembly tool characterized by, The utility model provides a kind of tool head, including: Tool head; Pressing rod, the pressing rod is arranged on the end surface of the tool head, and the pressing rod is coaxially arranged with the tool head; Positioning surface, the positioning surface is arranged on the end surface of the tool head, and the positioning surface is located on the same side of the tool head with the pressing rod, for providing the positioning contact plane of bearing on the pressing rod.

2. The bearing assembly tool of claim 1, wherein, A snap spring is operatively arranged on the pressing rod.

3. The bearing assembly tool of claim 1, wherein, A window is opened on the side surface of the tool head, and the window is located on the same end of the tool head with the positioning surface, and the window is at least two distributed in the circumferential direction of the tool head; In the axial direction of the tool head, the bottom surface of the window is below the positioning surface.

4. The bearing assembly tool of claim 1, wherein, An integral shoulder is formed on the end surface of the tool head, the size of the shoulder is larger than the size of the pressing rod, the pressing rod is integrally formed on the shoulder, and the top surface of the shoulder is below the positioning surface.

5. The bearing assembly tool of claim 4, wherein, The outer ring of the shoulder is located between the outer ring and the inner ring of the bearing.

6. A bearing gumming apparatus characterized by, The utility model provides a kind of tool head, including: Base; Motor, the motor is fixedly arranged on the base, and the rotating shaft of the motor is parallel to the top surface of the base; Rotary drum, the rotary drum is coaxially arranged on the rotating shaft of the motor; Glue pool, the glue pool is fixedly arranged on the base, and the rotary drum is located directly above the glue pool, and the side surface of the rotary drum is partially immersed in glue; Support, the support is fixedly arranged on the base; Chuck, the chuck is fixedly arranged on the support, and the chuck is used to clamp the tool of any one of claims 1-5, the chuck can operatively clamp the tool head, the pressing rod is parallel to the rotating shaft of the motor, the bearing is installed on the pressing rod, and the outer side surface of the bearing is pressed on the outer side surface of the rotary drum.

7. The bearing gluing apparatus of claim 6, wherein The support includes a linear guide rail and a rotary platform, the rotary platform is fixedly arranged on the base, the linear guide rail is vertically fixedly arranged on the table top of the rotary platform, and the chuck is fixedly arranged on the sliding block of the linear guide rail.

8. A bearing mounting arrangement characterised in that, The utility model provides a kind of tool head, including: Mounting seat; Mounting hole, the mounting hole is opened vertically to the top surface of the mounting seat, and the mounting hole is used to position the tool of any one of claims 1-5, and the pressing rod can be operatively inserted into the mounting hole; Boss, the boss is arranged on the top surface of the mounting seat, and the boss is coaxially arranged with the mounting hole, the mounting hole passes through the boss, and the boss is used to fix parts.

9. The bearing mounting arrangement of claim 8, wherein, The outer ring of the positioning surface is provided with a retainer, the retainer is coaxially arranged with the pressing rod, and the inner diameter of the retainer is larger than the outer diameter of the bearing.

10. The bearing mounting arrangement of claim 9, wherein, When the retainer contacts the part, the bearing has a gap with the top surface of the boss.

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