A pre-treatment device for wear-resistant processing inside a bearing chamber

Abstract

The application relates to the technical field of bearing chamber processing, in particular to a pretreatment device for wear-resistant processing of the inside of a bearing chamber, which comprises a rack assembly comprising a chassis sliding seat and a stand supporting frame fixed to one side of the chassis sliding seat; a height and angle adjusting mechanism comprising a sliding groove support arranged in a sliding groove on the upper end of the stand supporting frame in a vertical sliding mode; vertical adjustment realized by a sliding groove frame adjusting piece, swing angle adjustment realized by an adjusting cylinder and a vertical guide plate, large-stroke horizontal adjustment realized by a horizontal adjusting piece, and fine lateral adjustment realized by a lateral driving piece, so that the rotating axis of the polishing wheel can be quickly and accurately positioned to a spatial position coinciding with the theoretical axis of any eccentric hole or inclined hole; the polishing wheel can enter the irregular inner cavity in a centered posture, and the geometric precision and surface consistency of the inner cavity after pretreatment are ensured.

Description

Technical Field

[0001] This application relates to the field of bearing housing processing technology, specifically a pretreatment device for wear-resistant processing of bearing housing interiors. Background Technology

[0002] As a core basic component in mechanical equipment that supports and fixes rotating shafts and bearings, the geometric accuracy and quality of the inner bore surface of the bearing housing are crucial. In conventional applications, bearing housings are mostly standard cylindrical inner bores. However, with the increasing complexity and functional integration of equipment design, a large number of bearing housing structures with special geometric characteristics have emerged. For example, there are eccentric bearing housings designed to meet specific transmission relationships, where the center of the inner bore has a fixed offset from the workpiece mounting reference center; and there are bearing housings with an inclination angle (non-perpendicular) designed to adapt to compact spatial layouts or specific force directions, where the axis of the inner bore forms a certain angle with the end face of the workpiece.

[0003] These unconventional bearing housings (eccentric, inclined holes) are widely used in engineering machinery, aerospace, high-performance gearboxes, and other fields. Similar to conventional round holes, in order to improve their wear resistance and service life, they often need to undergo advanced remanufacturing and strengthening processes such as wear-resistant alloy spraying and laser cladding on their inner wall surface. The successful application of these processes invariably depends on high-quality surface pretreatment.

[0004] Currently, the pretreatment of bearing chambers with this special structure faces more severe technical challenges than that for conventional circular holes:

[0005] For eccentric or oblique holes, operators not only find it difficult to maintain stable grinding pressure by hand, but also cannot accurately ensure that the grinding trajectory coincides with the theoretical axis of the eccentric or oblique hole. This easily leads to the destruction of the geometric accuracy of the hole wall after pretreatment (such as unexpected taper, ellipticity, or axial offset), and extremely uneven surface roughness distribution. This inconsistent pretreatment quality will directly lead to uneven thickness of the subsequent wear-resistant coating, failure in weak areas, and even further amplification of the original shape error due to the inherent conformal effect of the coating, causing difficulties in bearing assembly or abnormal operation. Summary of the Invention

[0006] The technical problem to be solved by this application is to overcome the existing defects and provide a pretreatment device for wear-resistant machining inside bearing housings, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, this application provides the following technical solution: a pretreatment device for wear-resistant machining inside a bearing housing, comprising:

[0008] The frame assembly includes a base slide and a column support frame fixed to one side of the base slide;

[0009] The height and angle adjustment mechanism includes a slide bracket that can be vertically slidably disposed in a slide groove at the upper end of the column support frame, a slide bracket adjustment component for driving the slide bracket to move along the column support frame, and an adjustment cylinder hinged to the slide bracket.

[0010] The grinding feed mechanism includes a vertical guide plate hinged to the end of the slide bracket via an intermediate hinge seat. The vertical guide plate is connected to the telescopic end of the adjusting cylinder so as to swing around the intermediate hinge seat under the drive of the adjusting cylinder. A vertical drive member is provided on the vertical guide plate, and the moving end of the vertical drive member is connected to an intermediate connecting plate.

[0011] The grinding actuator includes a grinding mounting bracket, a drive assembly, and a grinding assembly mounted on the intermediate connecting plate by fasteners; the drive assembly includes a motor mounting bracket disposed at the upper end of the grinding mounting bracket, a grinding motor mounted on the motor mounting bracket, and an adapter wheel, wherein the grinding motor is sleeved with the adapter wheel via a transmission belt; the grinding assembly includes a grinding wheel that is driven by a rotating shaft inside the adapter wheel and extends downward.

[0012] As a preferred technical solution of this application, the slide rail adjustment component is a lead screw mechanism, which is threadedly connected to the threaded hole of the slide rail bracket, and one end of the slide rail adjustment component is rotatably disposed in the rotating sleeve of the column support frame.

[0013] As a preferred technical solution of this application, a handwheel is provided at the other end of the slide rail adjustment component.

[0014] As a preferred technical solution of this application, the adjusting cylinder is hinged to the slide rail bracket via a frame, and its telescopic end is connected to the vertical guide plate via a lateral mounting plate.

[0015] As a preferred technical solution of this application, it further includes a workpiece placement mechanism, wherein the workpiece placement mechanism includes:

[0016] The lateral adjustment assembly includes a left support and a right support mounted on the left and right sides of the base slide, and a lateral adjustment component disposed through the left support and the right support;

[0017] The workpiece bracket is connected to the movable end of the lateral adjustment member and can move laterally as the lateral adjustment member is driven.

[0018] As a preferred technical solution of this application, the workpiece bracket includes:

[0019] A lateral drive component is fixed to the movable end of the lateral adjustment component;

[0020] A sliding plate is connected to the movable end of the lateral drive component and is provided with a sliding groove;

[0021] The workpiece placement seat is slidably disposed within the groove of the sliding plate for adjustment under the drive of the lateral drive member.

[0022] As a preferred technical solution of this application, the workpiece placement seat includes:

[0023] The base plate of the support is slidably disposed within the groove of the sliding plate;

[0024] A vertical placement frame, fixed to the upper end of the base plate of the support, is used to support the workpiece in the bearing chamber;

[0025] An adjusting top shaft is set on the base plate of the support and located on one side of the vertical placement frame. It is used to press and fix the workpiece placed on the vertical placement frame from the side.

[0026] As a preferred technical solution of this application, the adjusting top shaft is a manually screw-type structure.

[0027] As a preferred technical solution of this application, the base slide further includes a main support plate, a left support and a right support, wherein the left support and the right support are respectively fixed to the left and right ends of the main support plate.

[0028] Compared with the prior art, the beneficial effects of this application are as follows: This application achieves vertical adjustment through the slide rail adjustment component, swing angle adjustment through the adjusting cylinder and the driving vertical guide plate, large-stroke lateral adjustment through the lateral adjustment component, and precise lateral adjustment through the lateral drive component. These features enable the grinding wheel's rotation axis to be quickly and accurately positioned to coincide with the theoretical axis of any eccentric or oblique hole. This allows the grinding wheel to enter the unconventional inner cavity in a centered posture, ensuring the geometric accuracy and surface consistency of the inner cavity after pretreatment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this application;

[0030] Figure 2 This is the main view of this application;

[0031] Figure 3 This is the right view of this application;

[0032] Figure 4 This is a partial structural diagram of this application.

[0033] In the diagram: 1. Adapter wheel, 2. Lateral adjustment component, 3. Lateral drive component, 4. Slide bracket, 5. Column support frame, 6. Slide bracket adjustment component, 7. Intermediate hinge seat, 8. Main support plate, 9. Lateral mounting plate, 10. Motor mounting frame, 11. Grinding motor, 12. Adjusting cylinder, 13. Side frame seat, 14. Vertical guide plate, 15. Vertical placement frame, 16. Support base plate, 17. Adjusting top shaft, 18. Grinding wheel, 19. Intermediate connecting plate, 20. Vertical drive component. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application (for ease of description and understanding, hereinafter referred to as...), Figure 2 (The above is described above). All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0035] Please see Figures 1-4 This application provides a technical solution: a pretreatment device for wear-resistant processing of bearing housing, including a frame assembly, which is composed of a base slide and a column support frame 5.

[0036] The base slide further includes a horizontally laid main support plate 8, which provides an installation plane. A left support and a right support are rigidly fixed at the left and right ends of the main support plate 8, respectively, together forming the transverse installation foundation of the workpiece placement mechanism. The column support frame 5 is vertically fixed to the upper surface of the right support of the main support plate 8.

[0037] The height and angle adjustment mechanism is the central link connecting the frame assembly and the grinding actuator. The slide bracket 4 is embedded in and slidably connected to the vertical slide groove of the column support frame 5, realizing the movement of the slide bracket 4. This movement is driven by the slide bracket adjustment component 6.

[0038] In this embodiment, the slide rail adjustment component 6 is specifically a lead screw mechanism. The lead screw passes through and is threaded into a threaded hole in the middle of the slide rail bracket 4, and is rotatably supported on the column support frame 5 via a bearing seat. A handwheel extends and is fixed to the top of the lead screw. By rotating the handwheel, the operator can easily and precisely adjust the position of the slide rail bracket 4 and its supporting components to accommodate macroscopic adjustments of workpieces with different diameter bearing chambers. Furthermore, the cylinder body of the adjusting cylinder 12 is hinged to the upper surface of the slide rail bracket 4 via a side frame seat 13, allowing it to swing around the hinge point. The telescopic end of this cylinder is connected to the subsequent grinding feed mechanism.

[0039] The vertical guide plate 14 in the grinding feed mechanism is hinged to the end of the slide rail bracket 4 via the intermediate hinge seat 7 at its lower back, allowing the vertical guide plate 14 to swing back and forth within a certain angle range around the hinge point. The upper end of the vertical guide plate 14 is hinged to the telescopic end of the aforementioned adjusting cylinder 12 via the lateral mounting plate 9.

[0040] When the adjusting cylinder 12 is activated, its pushing and pulling action is converted into the precise angular oscillation of the vertical guide plate 14 around the intermediate hinge seat 7, thereby setting the cutting angle of the grinding wheel 18, which is convenient for handling bearing chambers with tapered surfaces or for pre-treatment at specific angles. On the front of the vertical guide plate 14, a slide table serving as a vertical drive component 20 is mounted, with its moving end pointing vertically downward and connected to the intermediate connecting plate 19. This vertical drive component 20 is responsible for providing a stable and controllable linear feed motion when the grinding wheel 18 enters the inner wall of the workpiece.

[0041] The grinding mounting bracket in the grinding actuator is a transitional structure, mounted on the intermediate connecting plate 19 with fasteners and moving accordingly. At the upper end of the grinding mounting bracket, a motor mounting bracket 10 is fixed, on which a grinding motor 11 is mounted. An adapter wheel 1 is arranged parallel to the motor output shaft, and the two are connected by a transmission belt, forming a power transmission system. The grinding motor 11 serves as the power source, and its power is smoothly transmitted to the adapter wheel 1 via the transmission belt. The rotating shaft passes downwards from the center of the adapter wheel 1 through the grinding mounting bracket, and a replaceable grinding wheel 18 is mounted at its end. This ensures efficient and stable power transmission, as well as precise control of the grinding wheel 18's posture.

[0042] The workpiece placement mechanism is responsible for positioning and clamping the workpiece, and adjusting its position in the horizontal plane.

[0043] The horizontal adjustment component 2 is horizontally mounted between the left support and the right support, and the workpiece bracket is installed on its movable end. By driving the horizontal adjustment component 2, the entire workpiece bracket can be moved along a direction parallel to the length of the main support plate 8, realizing macroscopic and large-stroke adjustment of the relative position between the workpiece and the grinding wheel 18.

[0044] The lateral drive component 3 in the workpiece bracket is fixed to the movable end base of the transverse adjustment component 2. Its movable end is connected to a sliding plate with a guide groove. The bottom of the workpiece placement seat, i.e., the base plate 16, is embedded in this guide groove and can move laterally under the drive of the lateral drive component 3 for precise centering. The upper part of the workpiece placement seat is a vertical placement frame 15, typically in the shape of an arc-shaped support, used to support the outer circle of the workpiece in the bearing chamber. An adjusting top shaft 17 is provided nearby.

[0045] In this embodiment, the adjusting top shaft 17 is a manually screwed screw. By rotating the top shaft, the workpiece can be tightly pressed against the vertical placement frame 15 from the side, thus achieving fast and reliable clamping.

[0046] In use: Place it horizontally on the vertical mounting bracket 15 of the workpiece placement mechanism. Then, rotate the top shaft 17 clockwise until its end presses against the side wall of the workpiece, firmly fixing the workpiece on the bracket. Next, according to the approximate size of the workpiece, turn the handwheel to drive the slide rail bracket adjustment component 6, adjusting the slide rail bracket 4 to a suitable height range. Then, activate the horizontal adjustment component 2 to drive the entire workpiece bracket to move laterally, so that the inner hole of the workpiece is roughly aligned with the grinding wheel 18 above.

[0047] Activate the lateral drive unit 3 to move the sliding plate and the workpiece on it slightly laterally. Ensure, by observation or using a centering instrument, that the central axis of the workpiece is coplanar with the rotation axis of the grinding wheel 18. Then, according to process requirements (e.g., whether the workpiece's inner wall is a straight or tapered hole), control the movement of the adjusting cylinder 12. The extension and retraction of the cylinder piston rod, via the lateral mounting plate 9, pushes the vertical guide plate 14 to precisely rotate around the intermediate hinge seat 7 to a predetermined angle, which is then locked. This angle is the trajectory angle of the grinding wheel 18 as it enters the workpiece and begins its feed.

[0048] After all positioning is completed, the grinding motor 11 is started. The motor power drives the adapter wheel 1 via the transmission belt, which in turn drives the grinding wheel 18 to rotate at high speed. Then, the moving end of the vertical drive component 20 drives the intermediate connecting plate 19, the grinding mounting bracket, and the entire rotating grinding actuator to smoothly cut downwards into the inner hole of the workpiece along the angular trajectory set by the vertical guide plate 14. The grinding wheel 18 performs a full-coverage and consistent grinding treatment on the inner wall of the bearing chamber under constant speed feed. After reaching the predetermined depth or completing the entire stroke, the vertical drive component 20 moves in the reverse direction, driving the grinding wheel 18 to exit the workpiece.

[0049] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pretreatment device for wear-resistant machining inside a bearing housing, characterized in that, include: The frame assembly includes a base slide and a column support frame (5) fixed to one side of the base slide. The height and angle adjustment mechanism includes a slide bracket (4) that can be vertically slidably disposed in a slide groove at the upper end of the column support frame (5), a slide bracket adjustment member (6) for driving the slide bracket (4) to move along the column support frame (5), and an adjustment cylinder (12) hinged to the slide bracket (4). The grinding feed mechanism includes a vertical guide plate (14) hinged to the end of the slide bracket (4) via an intermediate hinge seat (7). The vertical guide plate (14) is connected to the telescopic end of the adjusting cylinder (12) so as to swing around the intermediate hinge seat (7) under the drive of the adjusting cylinder (12). A vertical drive member (20) is provided on the vertical guide plate (14), and the moving end of the vertical drive member (20) is connected to an intermediate connecting plate (19). The grinding actuator includes a grinding mounting bracket, a drive assembly, and a grinding assembly mounted on the intermediate connecting plate (19) by fasteners; the drive assembly includes a motor mounting bracket (10) disposed on the upper end of the grinding mounting bracket, a grinding motor (11) mounted on the motor mounting bracket (10), and an adapter wheel (1), the grinding motor (11) being sleeved with the adapter wheel (1) via a transmission belt; the grinding assembly includes a grinding wheel (18) driven by a rotating shaft inside the adapter wheel (1) and extending downward.

2. The pretreatment device for wear-resistant machining inside a bearing chamber according to claim 1, characterized in that: The slide rail adjustment component (6) is a lead screw mechanism, which is threadedly connected to the threaded hole of the slide rail bracket (4), and one end of the slide rail adjustment component (6) is rotatably disposed in the rotating sleeve of the column support frame (5).

3. The pretreatment device for wear-resistant machining inside a bearing chamber according to claim 2, characterized in that: A handwheel is provided at the other end of the slide rail adjustment component (6).

4. The pretreatment device for wear-resistant machining of bearing housings according to claim 1, characterized in that: The regulating cylinder (12) is hinged to the slide bracket (4) via the side frame seat (13), and its telescopic end is connected to the vertical guide plate (14) via the lateral mounting plate (9).

5. The pretreatment device for wear-resistant machining inside a bearing housing according to claim 1, characterized in that: It also includes a workpiece placement mechanism, which comprises: The lateral adjustment assembly includes a left support and a right support mounted on the left and right sides of the base slide, and a lateral adjustment component (2) passing through the left support and the right support. The workpiece bracket is connected to the movable end of the lateral adjustment member (2) and can move laterally as the lateral adjustment member (2) is driven.

6. The pretreatment device for wear-resistant machining inside a bearing chamber according to claim 5, characterized in that: The workpiece bracket includes: The lateral drive component (3) is fixed to the movable end of the lateral adjustment component (2); A sliding plate is connected to the movable end of the lateral drive member (3) and is provided with a sliding groove; The workpiece placement seat is slidably disposed in the groove of the sliding plate to be adjusted under the drive of the lateral drive member (3).

7. The pretreatment device for wear-resistant machining of a bearing housing according to claim 6, characterized in that: The workpiece placement seat includes: The base plate (16) is slidably disposed in the groove of the sliding plate; A vertical placement frame (15) is fixed to the upper end of the base plate (16) of the support and is used to support the bearing chamber workpiece; Adjustable top shaft (17) is set on the base plate (16) of the support and located on one side of the vertical placement frame (15) for laterally pressing and fixing the workpiece placed on the vertical placement frame (15).

8. The pretreatment device for wear-resistant machining of bearing housing according to claim 7, characterized in that: The adjusting top shaft (17) is a manually screw-type structure.

9. The pretreatment device for wear-resistant machining inside a bearing chamber according to claim 1, characterized in that: The base frame slide also includes a main support plate (8), a left support and a right support, the left support and the right support are respectively fixed to the left and right ends of the main support plate (8).

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