Radial expansion mechanism tool capable of adjusting curing pressure and using method

Abstract

The invention provides a radial expansion mechanism tool capable of adjusting curing pressure and a using method. The using method comprises the following steps that S1, a conical section of a mandrel is sleeved with an isolation sleeve, a plurality of taper hole sliding blocks are installed between the mandrel and the isolation sleeve, and an isolation layer, a baffle and a fastening nut are sequentially installed on a threaded shaft of the mandrel; the fastening nut is adjusted to enable the taper hole sliding block to radially tension the isolation sleeve, and the outer diameter of the isolation sleeve is turned; s2, sleeving the outer ring of the knuckle bearing bonded with the gasket on an isolation sleeve; s3, a fastening nut is adjusted to enable the taper hole sliding block to expand the spacer sleeve in the radial direction, and the spacer sleeve expands the gasket to enable the gasket to be pressed on the inner side of the outer ring of the knuckle bearing; and S4, curing the outer ring of the joint bearing bonded with the liner. According to the device, the pressure can be effectively controlled when the joint bearing liner is cured, sufficient attachment and sufficient loading force are effectively guaranteed when the liner is cured, the bonding quality of the cured liner is improved, and the dimensional precision of a joint bearing part is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of joint bearings, and in particular to a radial expansion mechanism tool capable of adjusting curing pressure and a use method thereof. Background Art

[0002] The self-lubricating liner curing process is one of the key technologies in the manufacture of fabric spherical plain bearings, which directly determines the final quality and friction and wear performance of the bearings.

[0003] The existing Chinese patent with publication number CN104121294A discloses a curing process method for a self-lubricating liner on a spherical surface of a spherical joint bearing. The curing process method is: only the inner ring is heated, and the temperature of the inner ring is controlled to reach the curing temperature of the structural adhesive of the self-lubricating liner and the temperature is maintained for a period of time, so that the temperature transfer route is transmitted from the inner ring to the self-lubricating liner, the outer ring and the curing ring in sequence, the temperature of the inner ring is higher than the temperature of the outer ring, the temperature of the outer ring is higher than the temperature of the curing ring, the expansion of the curing ring is smaller than the expansion of the outer ring, and the expansion of the outer ring is smaller than the expansion of the inner ring, so that the outer spherical surface of the inner ring and the inner spherical surface of the outer ring generate continuous curing pressure on the self-lubricating liner during the curing process.

[0004] The traditional spherical bearing liner curing tool is a polytetrafluoroethylene mandrel, which uses the thermal expansion properties of the polytetrafluoroethylene material to provide curing pressure for the liner. However, the polytetrafluoroethylene material may undergo microstructural changes during repeated heating and cooling, which will affect its thermal expansion coefficient, causing changes in the curing pressure and low reuse rate; at the same time, since the polytetrafluoroethylene mandrel is relatively soft, the machining accuracy is low, and there is a certain tolerance in its own size and the inner hole size after the liner is bonded, this will make the gap between the polytetrafluoroethylene mandrel and the inner hole of the liner more dispersed, resulting in poor consistency in the curing pressure of the liner of different parts, and the curing pressure cannot be effectively controlled. This will affect the curing effect of the liner, and seriously affect the bonding perfection of the liner.

[0005] Therefore, it is necessary to provide a radial expansion mechanism tooling with adjustable curing pressure and a method of use to effectively control the curing pressure of the liner, so as to avoid the problems of low machining accuracy, large dimensional tolerance with the bearing outer ring, poor dimensional stability under heat and pressure, uncontrollable thermal expansion performance, low reusability and high cost when using a PTFE core rod curing tooling. Summary of the invention

[0006] In view of the defects in the prior art, the object of the present invention is to provide a radial expansion mechanism tooling with adjustable curing pressure and a method of use.

[0007] A method for using a radial expansion mechanism tool capable of adjusting curing pressure provided by the present invention comprises the following steps:

[0008] Step S1, sleeve the isolation sleeve on the tapered section of the mandrel, install a plurality of tapered hole sliders between the mandrel and the isolation sleeve, install an isolation layer, a baffle and a fastening nut on the threaded shaft of the mandrel in sequence, the isolation layer and the isolation sleeve are fitted together, the fastening nut is adjusted to make the tapered hole slider radially tighten the isolation sleeve, and the outer diameter of the isolation sleeve is machined;

[0009] Step S2, putting the outer ring of the spherical plain bearing with the liner bonded thereto on the isolation sleeve, with a gap between the liner and the isolation sleeve;

[0010] Step S3, clamping the mandrel on a bench vise, adjusting the fastening nut to radially expand the tapered hole slider and tighten the spacer sleeve, and the spacer sleeve and the liner are expanded so that the liner is pressed against the inner side of the outer ring of the spherical bearing;

[0011] Step S4, curing the outer ring of the spherical plain bearing bonded with the liner, and after the curing is completed, adjusting the fastening nut to shrink the isolation sleeve and separate it from the liner.

[0012] Preferably, in step S1, the mandrel is a metal mandrel, the right end of the mandrel is a threaded shaft, the fastening nut is connected to the threaded shaft by threaded cooperation, the middle part of the mandrel is a conical section, and the left end of the mandrel is provided with two clamping planes for clamping in a bench vise.

[0013] Preferably, in step S1, the material of the tapered hole slider includes stainless steel or polyimide, the tapered hole slider is formed by evenly cutting a cylinder with a tapered hole along the center axis, and the tapered hole slider is matched with the tapered section of the core shaft.

[0014] Preferably, in step S1, the tapered hole slider is slidably matched with the outer surface of the tapered section of the core shaft, and when the tapered hole slider moves to the minimum outer diameter of the tapered section of the core shaft, two adjacent tapered hole sliders are arranged in close contact.

[0015] Preferably, in step S1, the material of the isolation sleeve includes polytetrafluoroethylene or polyimide with demoulding and expansion properties, and the outer surface of the isolation sleeve is smooth and can withstand high temperatures above 150°C.

[0016] Preferably, in step S1, the thickness of the isolation sleeve is 1-3 mm.

[0017] Preferably, in step S1, the material of the isolation layer includes polytetrafluoroethylene or polyimide, the isolation layer is annular, the inner hole size of the isolation layer is larger than the minimum outer diameter of the conical section of the core shaft and smaller than the outer diameter size of the fastening nut, and the outer diameter of the isolation layer is larger than the inner hole diameter of the outer ring of the spherical bearing.

[0018] Preferably, in step S1, the material of the baffle includes stainless steel or polyimide, and the shape and size of the baffle match those of the isolation layer.

[0019] Preferably, in step S1, the material of the fastening nut includes polyimide or metal.

[0020] According to the present invention, a radial expansion mechanism tool with adjustable curing pressure includes a core shaft, a tapered hole slider, an isolation sleeve, an isolation layer, a baffle and a fastening nut. The radial expansion mechanism tool with adjustable curing pressure adopts the above-mentioned method of using the radial expansion mechanism tool with adjustable curing pressure to perform the curing operation of the outer ring bonding gasket of the joint bearing.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention adjusts the fastening nut to radially expand the isolation sleeve of the tapered hole slider, and the isolation sleeve expands the gasket so that the gasket is pressed against the inner side of the outer ring of the joint bearing, thereby performing the joint bearing outer ring bonding gasket curing operation, and can achieve effective control of the pressure during the curing of the joint bearing gasket, and can meet the loading force and demoulding requirements of different forms of fabric gasket type joint bearings during curing, and can effectively ensure that the gasket is fully fitted during curing and has sufficient loading force, so that the bonding quality of the gasket after curing is effectively improved, thereby improving the dimensional accuracy control of the joint bearing parts, and can be reused an unlimited number of times, thereby greatly reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a radial expansion mechanism tooling capable of adjusting the curing pressure, which is mainly embodied in the present invention;

[0025] Figure 2 The left side view of the radial expansion mechanism tooling capable of adjusting the curing pressure mainly embodies the present invention.

[0026] As shown in the figure:

[0027] Mandrel 1 Cone hole slider 2 Spacer sleeve 3

[0028] Isolation layer 4 Baffle 5 Fastening nut 6

[0029] Spherical plain bearing outer ring 7 DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0031] Example 1

[0032] like Figure 1 and 2 As shown, a method for using a radial expansion mechanism tooling capable of adjusting curing pressure provided by the present invention comprises the following steps:

[0033] Step S1, sleeve the isolation sleeve 3 on the tapered section of the core shaft 1, install multiple tapered hole sliders 2 between the core shaft 1 and the isolation sleeve 3, install the isolation layer 4, the baffle 5 and the fastening nut 6 on the threaded shaft of the core shaft 1 in sequence, the isolation layer 4 and the isolation sleeve 3 are arranged in close contact, adjust the fastening nut 6 to make the tapered hole slider 2 radially tension the isolation sleeve 3, and machine the outer diameter of the isolation sleeve 3;

[0034] Step S2, sleeve the outer ring 7 of the spherical plain bearing bonded with the liner on the isolation sleeve 3, with a gap between the liner and the isolation sleeve 3;

[0035] Step S3, clamp the mandrel 1 on a bench vise, adjust the fastening nut 6 to radially expand the tapered hole slider 2 to tighten the spacer sleeve 3, and the spacer sleeve 3 to expand the liner so that the liner is pressed against the inner side of the outer ring 7 of the spherical bearing;

[0036] Step S4, curing the outer ring 7 of the spherical plain bearing bonded with the liner, after the curing is completed, adjusting the fastening nut 6 to shrink the isolation sleeve 3 and separate it from the liner.

[0037] The curing tooling of the present application is used for the pre-curing work of the self-lubricating liner of the inner hole of the outer ring of the fabric-lined spherical bearing with adjustable and controllable pressure. Since the inner hole size of the outer ring 7 of the spherical bearing after the liner is bonded is relatively large, before assembly, it is necessary to appropriately trim the outer diameter size of the isolation sleeve 3 according to the inner hole size of the outer ring 7 of the production batch of spherical bearings after the liner is bonded. Adjust the fastening nut 06 to make the tapered hole slider 2 radially tension the isolation sleeve 3, and machine the outer diameter of the isolation sleeve 3, install the outer ring 7 of the spherical bearing on the isolation sleeve 3, and make the clearance between it and the inner diameter of the product bonding liner as small as possible.

[0038] The mandrel 1 is a metal mandrel, generally made of stainless steel or other high-strength metal materials. The right end of the mandrel 1 is a threaded shaft, and the fastening nut 6 is connected to the threaded shaft through threaded cooperation. The middle part of the mandrel 1 is a tapered section, and the left end of the mandrel 1 is provided with two clamping planes for clamping with a bench vise.

[0039] The material of the tapered hole slider 2 is stainless steel, polyimide or other high-strength metal or non-metal material. The tapered hole slider 2 is formed by evenly cutting a cylinder with a tapered hole along the central axis direction. The tapered hole slider 2 is matched with the taper of the tapered section of the mandrel 1. The tapered hole slider 2 is slidably matched with the outer surface of the tapered section of the mandrel 1. When the tapered hole slider 2 moves to the minimum outer diameter of the tapered section of the mandrel 1, two adjacent tapered hole sliders 2 are fitted together. The cylinder with a tapered hole is cut into four to eight equal parts or in the form of injection molding to obtain a plurality of identical tapered hole sliders 2, which are installed on the tapered surface of the mandrel 1 and then move outward in the process of being pushed by the baffle 5, thereby tightening the external isolation sleeve 3 to provide curing pressure for the self-lubricating liner.

[0040] The material of the isolation sleeve 3 includes non-metallic plastic materials such as polytetrafluoroethylene or polyimide with certain demoulding and expansion properties. The outer surface of the isolation sleeve 3 is smooth and can withstand high temperatures above 150°C for a long time. The thickness of the isolation sleeve 3 is 1-3mm. Since the core shaft 1 and the tapered hole slider 2 are tapered, the tapered hole slider 2 will expand the isolation sleeve 3. Since the isolation sleeve 3 is a non-metallic plastic material with good expansion properties, its outer diameter will increase during the expansion process, thereby expanding the self-lubricating liner at the inner diameter of the outer ring 7 of the joint bearing and providing curing pressure for it. In the process of being expanded by the tapered hole slider 2, the outer diameter increases, thereby directly contacting the self-lubricating liner at the inner hole of the outer ring 7 of the joint bearing, providing curing pressure for it, and avoiding the liner pressure-free curing ribs caused by the circumferential gap of the slider; at the same time, it plays a role in protecting the liner to prevent the edges of the tapered hole slider from scratching the surface of the self-lubricating liner; and since the self-lubricating liner will overflow with glue after curing, the isolation sleeve 3 will also play a role in demoulding, which is conducive to disassembly after curing.

[0041] The material of the isolation layer 4 is polytetrafluoroethylene, polyimide or other demoulding materials, and it mainly prevents the overflowed glue from being cured from adhering to the baffle 5. The isolation layer 4 is annular, and the inner hole size of the isolation layer 4 is larger than the minimum outer diameter of the tapered section of the mandrel 1, and smaller than the outer diameter of the fastening nut 6. The outer diameter of the isolation layer 4 is larger than the inner hole diameter of the outer ring 7 of the spherical bearing.

[0042] The baffle 5 is made of stainless steel, polyimide or other high-strength metal or non-metal material. The baffle 5 is annular. The inner hole size of the baffle 5 is larger than the minimum outer diameter of the tapered section of the mandrel 1 and smaller than the outer diameter size of the fastening nut 6. The outer diameter of the baffle 5 is larger than the inner hole diameter of the spherical bearing outer ring 7. During the tightening process of the fastening nut 6, the tapered hole slider 2 and the isolation sleeve 3 are pushed to the left to move, thereby expanding the isolation sleeve 3; its outer diameter is larger than the inner hole diameter of the spherical bearing outer ring 7, and plays a role of limiting during the installation of the spherical bearing outer ring 7.

[0043] The fastening nut 6 is generally a standard part made of polyimide or metal material. It is installed on the threaded shaft and presses the baffle 5. The tightening force provided by the torque wrench to the fastening nut 6 can indirectly adjust the expansion force of the isolation sleeve 3 on the self-lubricating liner of the outer ring 7 of the spherical bearing, that is, the curing pressure.

[0044] By adopting the spherical bearing curing tooling and its use method of the present application, the dimensional accuracy consistency of the inner hole of the cured outer ring is better; through the liner peeling test, it is found that the tooling curing process of the present application has uniform distribution of adhesive in various places, and the bonding strength in various places is relatively consistent, with a peel strength value of about 1.3-1.5N / mm. The overall peel strength has higher quality consistency and better stability within and between batches than the traditional curing process.

[0045] The present application avoids the problems of low machining accuracy, large tolerance between the size and the outer ring of the bearing, poor stability of the size under heat and pressure, uncontrollable thermal expansion performance, low reusability, and high cost in the original technology using the PTFE core rod curing tool. By adopting the spherical bearing curing tool of the present application and its use method, it is possible to achieve effective control of the pressure during curing of the spherical bearing pad, and to meet the loading force and demoulding requirements during curing of different forms of fabric pad type spherical bearings. By adjusting the fastening nut 6, it can be effectively ensured that the pad is fully fitted during curing and has sufficient loading force, so that the bonding quality of the pad after curing is effectively improved, and the dimensional accuracy control of the spherical bearing parts is improved. The process meets the requirements of current industrial-scale production. At the same time, the tool can be reused an unlimited number of times, greatly reducing production costs.

[0046] Example 2

[0047] According to the present invention, a radial expansion mechanism tool with adjustable curing pressure includes a core shaft 1, a tapered hole slider 2, an isolation sleeve 3, an isolation layer 4, a baffle 5 and a fastening nut 6. The radial expansion mechanism tool with adjustable curing pressure adopts the method of using the radial expansion mechanism tool with adjustable curing pressure in Example 1 to perform the curing operation of the bonding liner of the outer ring 7 of the joint bearing.

[0048] Before assembly, the initial wall thickness of the polytetrafluoroethylene spacer sleeve 3 is appropriately trimmed to 2mm outer diameter according to the inner hole size of the production batch bearing outer ring after bonding the liner. Adjust the metal material fastening nut 6 to make the tapered hole slider 2 radially tighten the spacer sleeve 3, and machine the outer diameter of the spacer sleeve 3, and install the outer ring 7 of the spherical bearing on the spacer sleeve 3 to minimize the clearance between it and the inner diameter of the product bonding liner. During assembly, the two flat surfaces on the left end of the stainless steel G95Cr18 mandrel 1 are clamped on a bench vise. By tightening the metal fastening nut 6, the stainless steel G95Cr18 baffle 5 and the polytetrafluoroethylene isolation layer 4 push the four identical tapered hole sliders 2 and isolation sleeves 3 made of stainless steel G95Cr18 to move to the left. Since the mandrel 1 and the tapered hole slider 2 are tapered, the tapered hole slider will expand the isolation sleeve 3. Since the isolation sleeve 3 is made of polytetrafluoroethylene and has good elasticity, its outer diameter will increase during the expansion process, thereby expanding the self-lubricating gasket at the inner diameter of the outer ring of the spherical bearing and providing curing pressure for it. The tightening force is provided to the fastening nut 6 by a torque wrench, thereby achieving the effect of indirectly controlling the curing pressure of the self-lubricating gasket. Among them, the polytetrafluoroethylene isolation layer 4 mainly prevents the glue overflowed by the curing from adhering to the baffle 5.

[0049] Example 3

[0050] According to the present invention, a radial expansion mechanism tool with adjustable curing pressure includes a core shaft 1, a tapered hole slider 2, an isolation sleeve 3, an isolation layer 4, a baffle 5 and a fastening nut 6. The radial expansion mechanism tool with adjustable curing pressure adopts the method of using the radial expansion mechanism tool with adjustable curing pressure in Example 1 to perform the curing operation of the bonding liner of the outer ring 7 of the joint bearing.

[0051] Before assembly, the initial wall thickness of the polyimide spacer sleeve 3 is appropriately trimmed to 2.5mm outer diameter according to the inner hole size of the production batch bearing outer ring after bonding the liner. Adjust the metal material fastening nut 6 to make the tapered hole slider 2 radially tension the spacer sleeve 3, and turn the outer diameter of the spacer sleeve 3, install the outer ring of the joint bearing on the spacer sleeve 3, and make the clearance between it and the inner diameter of the product bonding liner as small as possible. During assembly, clamp the two planes on the left end of the mandrel 1 made of aluminum alloy 7075 on the bench vise, and move the six identical tapered hole sliders 2 and spacer sleeves 3 to the left by tightening the fastening nut 6. Since the mandrel 1 and the tapered hole slider 2 are tapered, the tapered hole slider will expand the spacer sleeve 3. Since the spacer sleeve 3 is made of polyimide and has good elasticity, its outer diameter will increase during the expansion process, thereby expanding the self-lubricating liner at the inner diameter of the outer ring of the joint bearing and providing curing pressure for it. The torque wrench is used to provide tightening force for the fastening nut 6, thereby achieving the effect of indirectly controlling the curing pressure of the self-lubricating liner. The polyimide isolation layer 4 mainly prevents the overflowed glue from being cured from adhering to the baffle 5 .

[0052] Example 4

[0053] According to the present invention, a radial expansion mechanism tool with adjustable curing pressure includes a core shaft 1, a tapered hole slider 2, an isolation sleeve 3, an isolation layer 4, a baffle 5 and a fastening nut 6. The radial expansion mechanism tool with adjustable curing pressure adopts the method of using the radial expansion mechanism tool with adjustable curing pressure in Example 1 to perform the curing operation of the bonding liner of the outer ring 7 of the joint bearing.

[0054] Before assembly, the initial wall thickness of the polytetrafluoroethylene spacer sleeve 3 is appropriately trimmed to 1.5mm outer diameter according to the inner hole size of the production batch bearing outer ring after bonding the liner. Adjust the polyimide material fastening nut 6 to make the tapered hole slider 2 radially tension the spacer sleeve 3, and turn the outer diameter of the spacer sleeve 3, install the outer ring of the joint bearing on the spacer sleeve 3, and make the clearance between it and the inner diameter of the product bonding liner as small as possible. During assembly, clamp the two planes on the left end of the polyimide mandrel 1 on the bench vise, and by tightening the fastening nut 6, the polyimide baffle 5 and the polyimide isolation layer 4 push the eight identical tapered hole sliders 2 and the spacer sleeve 3 of polyimide to move to the left. Since the mandrel 1 and the tapered hole slider 2 are tapered, the tapered hole slider will expand the spacer sleeve 3. Since the spacer sleeve 3 is made of polytetrafluoroethylene and has good telescopic performance, its outer diameter will increase during the expansion process, thereby expanding the self-lubricating liner at the inner diameter of the outer ring of the joint bearing, providing curing pressure for it. The tightening force is provided to the fastening nut 6 by a torque wrench, thereby indirectly controlling the curing pressure of the self-lubricating gasket. The polytetrafluoroethylene isolation layer 4 mainly prevents the overflowed glue from being bonded to the baffle 5 during curing.

[0055] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0056] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A method for using a radial expansion mechanism tooling capable of adjusting curing pressure, characterized in that: The following steps are involved: Step S1, sleeve the isolation sleeve (3) onto the conical section of the core shaft (1), install a plurality of tapered hole sliders (2) between the core shaft (1) and the isolation sleeve (3), install an isolation layer (4), a baffle (5) and a fastening nut (6) on the threaded shaft of the core shaft (1) in sequence, the isolation layer (4) and the isolation sleeve (3) are fitted together, adjust the fastening nut (6) so that the tapered hole slider (2) radially tightens the isolation sleeve (3), and machine the outer diameter of the isolation sleeve (3); Step S2, putting the outer ring (7) of the spherical plain bearing bonded with the liner on the isolation sleeve (3), with a gap between the liner and the isolation sleeve (3); Step S3, clamping the mandrel (1) on a bench vise, adjusting the fastening nut (6) so that the tapered hole slider (2) radially expands the spacer sleeve (3), and the spacer sleeve (3) expands the liner so that the liner is pressed against the inner side of the outer ring (7) of the spherical bearing; Step S4, curing the outer ring (7) of the spherical plain bearing bonded with the liner, and after the curing is completed, adjusting the fastening nut (6) to shrink the isolation sleeve (3) and separate it from the liner.

2. The method for using the radial expansion mechanism tooling with adjustable curing pressure as claimed in claim 1, characterized in that: In step S1, the mandrel (1) is a metal mandrel, the right end of the mandrel (1) is a threaded shaft, the fastening nut (6) is connected to the threaded shaft by threaded cooperation, the middle part of the mandrel (1) is a conical section, and the left end of the mandrel (1) is provided with two clamping planes for clamping with a bench vise.

3. The method for using the radial expansion mechanism tooling with adjustable curing pressure as claimed in claim 1, characterized in that: In step S1, the material of the tapered hole slider (2) includes stainless steel or polyimide, and the tapered hole slider (2) is formed by evenly cutting a cylinder with a tapered hole along the center axis direction, and the tapered hole slider (2) is matched with the tapered section of the core shaft (1).

4. The method for using the radial expansion mechanism tooling capable of adjusting curing pressure as claimed in claim 1, characterized in that: In step S1, the tapered hole slider (2) is slidably matched with the outer surface of the tapered section of the core shaft (1). When the tapered hole slider (2) moves to the minimum outer diameter of the tapered section of the core shaft (1), two adjacent tapered hole sliders (2) are arranged in close contact.

5. The method for using the radial expansion mechanism tooling capable of adjusting curing pressure as claimed in claim 1, characterized in that: In the step S1, the material of the isolation sleeve (3) includes polytetrafluoroethylene or polyimide with demoulding and expansion properties, and the outer surface of the isolation sleeve (3) is smooth and can withstand high temperatures above 150°C.

6. The method for using the radial expansion mechanism tooling capable of adjusting curing pressure as claimed in claim 1, characterized in that: In the step S1, the thickness of the isolation sleeve (3) is 1-3 mm.

7. The method for using the radial expansion mechanism tooling capable of adjusting curing pressure as claimed in claim 1, characterized in that: In step S1, the material of the isolation layer (4) includes polytetrafluoroethylene or polyimide, the isolation layer (4) is annular, the inner hole size of the isolation layer (4) is larger than the minimum outer diameter of the conical section of the core shaft (1) and smaller than the outer diameter size of the fastening nut (6), and the outer diameter of the isolation layer (4) is larger than the inner hole diameter of the outer ring (7) of the spherical bearing.

8. The method for using the radial expansion mechanism tooling capable of adjusting curing pressure as claimed in claim 7, characterized in that: In the step S1, the material of the baffle (5) includes stainless steel or polyimide, and the shape and size of the baffle (5) match those of the isolation layer (4).

9. The method for using the radial expansion mechanism tooling capable of adjusting curing pressure as claimed in claim 1, characterized in that: In the step S1, the material of the fastening nut (6) includes polyimide or metal.

10. A radial expansion mechanism tooling with adjustable curing pressure, characterized in that: It comprises a core shaft (1), a tapered hole slider (2), an isolation sleeve (3), an isolation layer (4), a baffle (5) and a fastening nut (6). The radial expansion mechanism tooling with adjustable curing pressure adopts the method of using the radial expansion mechanism tooling with adjustable curing pressure as described in claim 1 to perform the curing operation of the bonding gasket of the outer ring (7) of the spherical bearing.

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