Accurate grinding treatment equipment for inner surface of bearing seat

Abstract

The invention provides bearing seat inner surface accurate grinding treatment equipment, and relates to the technical field of bearing machining, the bearing seat inner surface accurate grinding treatment equipment comprises a stabilizing plate, a stabilizing base is arranged above the stabilizing plate, a stabilizing top seat is mounted above the stabilizing base by matching with a bolt, and two symmetrically distributed positioning rods are mounted above the stabilizing plate; a set of bearing seats is installed between the two positioning rods, a set of driving mechanisms is installed between the stable base and the stable top seat, and a friction disc is installed on one side of each driving mechanism. The driving mechanism is arranged to be matched with the accurate grinding assembly to achieve the effect of accurate grinding of the inner wall of the bearing seat, in addition, friction protrusions are arranged on the basis that the driving mechanism is matched with the accurate grinding assembly, and a friction disc is matched with hemispherical friction protrusions of an extrusion disc, so that grinding strips are overlapped with axial reciprocating vibration during rotary grinding to form crossed grinding lines, and compared with traditional one-way grinding, the grinding efficiency is greatly improved. And the surface roughness of the bearing seat is reduced, and the inner surface machining requirement of the high-precision bearing seat is met.

Description

Technical Field

[0001] This invention relates to the field of bearing processing technology, and in particular to a precision grinding equipment for the inner surface of a bearing housing. Background Technology

[0002] As a key component in mechanical transmission systems, the surface quality of the inner wall of the bearing housing directly affects the bearing's installation accuracy, operational stability, and service life. Currently, the inner surface of bearing housings is typically machined using traditional grinding equipment. However, traditional grinding equipment has several problems, including: Traditional bearing housing internal surface processing equipment uses fixed grinding wheels for unidirectional rotary grinding. The abrasive grain trajectory is singular, which easily forms parallel scratches on the workpiece surface, resulting in high surface roughness. In addition, during unidirectional grinding, the contact area between the grinding wheel and the workpiece is large, and the grinding force is concentrated, which can easily cause local overheating and deformation of the workpiece. This has a significant impact on the processing accuracy of thin-walled bearing housings. Some equipment has attempted to introduce axial vibration grinding, but it uses cam mechanisms or hydraulic drives, which are complex in structure and the vibration frequency is not adjustable, making it difficult to match the needs of different materials and processing stages. During the grinding process of the bearing housing inner hole, grinding debris tends to accumulate between the grinding wheel and the workpiece, resulting in severe secondary cutting of the grinding debris. This not only exacerbates the wear of the grinding wheel but may also scratch the machined surface. At the same time, the grinding heat cannot be dissipated in time, causing local temperature rise, which softens or burns the workpiece material, affecting surface hardness and wear resistance. Summary of the Invention

[0003] This invention relates to a bearing housing inner surface fine grinding equipment. An electric motor is started, driving a gear to rotate. This gear, in turn, drives a rotating shaft and a friction disc to rotate synchronously. The extrusion disc rotates with the drive shaft, and its hemispherical friction protrusions make interlaced contact with the protrusions of the friction disc, periodically pushing the friction disc to reciprocate axially along the rotating shaft. This causes the positioning frame and grinding strip to generate axial vibration grinding. During grinding, the chip removal groove uses centrifugal force to discharge grinding chips along the surface of the grinding strip. Simultaneously, an external coolant system can be connected to cool and lubricate the grinding area. The equipment control system sets the electric motor running time or grinding feed rate. When the preset parameters are reached, the machine automatically stops, and the finished bearing housing is removed.

[0004] This invention provides a bearing housing inner surface fine grinding treatment device, specifically comprising: a stabilizing plate, a stabilizing base at the top of the stabilizing plate, a stabilizing top seat at the top of the stabilizing base with bolts, two symmetrically distributed positioning rods at the top of the stabilizing plate, a set of bearing housings between the two positioning rods, a driving mechanism between the stabilizing base and the stabilizing top seat, a friction disc at one side of the driving mechanism, a set of connecting plates arranged in a circular array at one side of the friction disc, and a positioning frame at one side of the connecting plates. The friction disc, connecting plates, and positioning frame are an integral structure.

[0005] Furthermore, a set of evenly distributed connecting grooves are opened at the upper position of the stabilizing plate. The connecting grooves are cylindrical structures, and the bottom of the positioning rod is installed on the inner side of the connecting groove.

[0006] Furthermore, a positioning groove is provided at the top position of the stable base and the bottom position of the stable top seat. The positioning groove is a rectangular structure. An electric motor is installed between the two positioning grooves. A drive gear and a pressing plate are installed on the outer side of the drive shaft of the electric motor.

[0007] Furthermore, a rotating groove is provided at the top of the stable base and at the bottom of the stable top seat. The rotating groove has a stepped arc structure. A rotating shaft is installed between the two rotating grooves. A driven gear is installed on the outer side of the rotating shaft. The driven gear meshes with the driving gear. The electric motor, driving gear, extrusion disc, rotating shaft, and driven gear cooperate to form a driving mechanism. A blocking ring is provided on each side of the driven gear.

[0008] Furthermore, an elongated sliding groove is formed on the outer side of the rotating shaft. The sliding groove has a U-shaped structure. A sliding hole corresponding to the rotating shaft is formed at the center of the friction disk. One side of the rotating shaft passes through the interior of the sliding hole. A set of friction protrusions is provided on one side of the extrusion disk and the friction disk. The friction protrusions have a hemispherical structure. The friction protrusions of the extrusion disk and the friction disk are staggered. A support spring is installed between the driven gear and the friction disk.

[0009] Furthermore, a set of positioning housings arranged in a circular array are installed on one side of the positioning frame, and a set of sliding holes arranged in a circular array are opened on the basis of the positioning frame. The sliding holes are oval holes. A set of positioning bolts are installed on one side of the positioning housings, and the positioning bolts pass through the interior of the sliding holes.

[0010] Furthermore, a transverse threaded rod is provided at the center of the positioning frame, and a positioning sleeve is installed on the outer side of the threaded rod. The threaded rod and the positioning sleeve are connected by a sliding connection structure, and a set of hinged swing plates are installed between the positioning sleeve and the positioning housing.

[0011] Furthermore, a grinding strip is installed on the inner side of the positioning housing, and a stabilizing rod is provided at the bottom of the grinding strip to further stabilize the installation position of the grinding strip. A set of chip removal grooves is opened at the top of the grinding strip, and the chip removal grooves are inclined.

[0012] Furthermore, an adjusting nut is installed on the outer side of the threaded rod, a support spring is installed between the positioning sleeve and the positioning frame, and a locking bolt is installed on one side of the adjusting nut. The friction disc, connecting plate, positioning frame, threaded rod, positioning sleeve, positioning housing, grinding strip, and adjusting nut cooperate with each other to form a fine grinding assembly.

[0013] This invention provides a precision grinding device for the inner surface of a bearing housing, which has the following beneficial effects: In this invention, a drive mechanism is set up in conjunction with a precision grinding component to achieve the effect of precision grinding of the inner wall of the bearing housing. In addition, friction protrusions are set on the basis of the drive mechanism and the precision grinding component. The hemispherical friction protrusions of the friction disk and the extrusion disk cooperate to make the grinding strip superimpose axial reciprocating vibration during rotary grinding, forming cross grinding patterns. Compared with traditional unidirectional grinding, the surface roughness of the bearing housing is reduced, which meets the requirements of high-precision bearing housing inner surface processing.

[0014] In addition, a support spring is set to elastically support the positioning sleeve to one side. By rotating the adjusting nut in conjunction with the elastic support, the lateral movement of the positioning sleeve is controlled. When the positioning sleeve moves, it forms a linkage mechanism, which enables rapid adjustment of the grinding position of the grinding strip. When the grinding strip contacts the inner wall of the bearing seat, the electric motor is controlled to drive the grinding strip to rotate. At the same time, the grinding strip is subjected to force and moves back and forth to quickly and finely grind the inner wall of the bearing seat. A chip removal groove is set on the grinding strip. With the reciprocating movement of the grinding strip, the grinding waste can be pushed outward. The inclined chip removal groove of the grinding strip, combined with the centrifugal force, increases the chip removal speed to 1.5 times that of the traditional straight groove structure, avoiding grinding wheel blockage and workpiece scratches caused by chip accumulation, while reducing grinding heat accumulation and extending the grinding strip life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the shaft side structure of the fine grinding equipment of the present invention after assembly is shown; Figure 2 The present invention is shown Figure 1 A schematic diagram of a partial axial side structure; Figure 3 A top view of the fine grinding equipment of the present invention is shown; Figure 4 A partial axial side structure diagram of the fine grinding equipment of the present invention is shown; Figure 5 A schematic diagram of the axial side structure of the drive mechanism and the fine grinding component of the present invention is shown. Figure 6 The present invention is shown Figure 5 Front view structural diagram; Figure 7A partial axial side view of the drive mechanism and fine grinding assembly of the present invention is shown; Figure 8 The present invention is shown Figure 7 A schematic diagram of the axonal structure from the rear view; Figure 9 A schematic diagram of the axial structure of the fine grinding assembly of the present invention is shown; Figure 10 The present invention is shown Figure 4 A magnified structural diagram at point A.

[0018] List of reference numerals 1. Stabilizing plate; 101. Stabilizing base; 102. Positioning rod; 2. Secure the top seat; 3. Bearing housing; 4. Drive mechanism; 401. Electric motor; 402. Drive gear; 403. Extrusion disc; 404. Rotating shaft; 405. Driven gear; 5. Precision grinding components; 501. Friction disc; 502. Connecting plate; 503. Positioning frame; 504. Threaded rod; 505. Positioning sleeve; 506. Positioning housing; 507. Grinding strip; 508. Adjusting nut. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figures 1 to 10 : This invention proposes a bearing housing inner surface fine grinding treatment device, comprising: a stabilizing plate 1, a stabilizing base 101 provided above the stabilizing plate 1, a stabilizing top seat 2 installed above the stabilizing base 101 with bolts, two symmetrically distributed positioning rods 102 installed above the stabilizing plate 1, and a set of evenly distributed connecting grooves formed above the stabilizing plate 1. The connecting grooves are cylindrical structures, and the bottom of the positioning rods 102 are installed inside the connecting grooves. The connecting grooves position the positioning rods 102. In addition, the setting of the connecting grooves facilitates the replacement of the positioning rods 102 according to actual needs. In this embodiment, a set of bearing seats 3 is installed between the two positioning rods 102, and a set of drive mechanisms 4 is installed between the stable base 101 and the stable top seat 2. A positioning groove is formed at the top of the stable base 101 and the bottom of the stable top seat 2, and the positioning grooves are rectangular. An electric motor 401 is installed between the two positioning grooves. When the stable base 101 and the stable top seat 2 are assembled, the positioning grooves help to stabilize the electric motor 401. A drive gear 402 and a pressing disc 403 are installed on the outer side of the drive shaft of the electric motor 401 to control the stable rotation of the drive gear 402 and the pressing disc 403. A rotation groove is formed at the top of the stable base 101 and the bottom of the stable top seat 2. The moving slot has a stepped arc structure. A rotating shaft 404 is installed between the two rotating slots. The stepped arc structure of the rotating slot laterally positions the rotating shaft 404, enabling the rotating shaft 404 to rotate stably in place. A driven gear 405 is installed on the outer side of the rotating shaft 404. The driven gear 405 meshes with the driving gear 402. The electric motor 401, driving gear 402, extrusion disc 403, rotating shaft 404, and driven gear 405 cooperate to form the driving mechanism 4. Therefore, when the driving gear 402 rotates, it can drive the rotating shaft 404 to rotate. A blocking ring is provided on each side of the driven gear 405. The two blocking rings clamp the driving gear 402, so the transmission between the driven gear 405 and the driving gear 402 is more stable. In this embodiment, a friction disk 501 is installed on one side of the drive mechanism 4. A set of connecting plates 502 arranged in a circular array are provided on one side of the friction disk 501. A positioning frame 503 is provided on one side of the connecting plates 502. The friction disk 501, connecting plates 502, and positioning frame 503 are an integral structure. A long, narrow sliding groove is opened on the outer surface of the rotating shaft 404. The sliding groove has a U-shaped structure. A sliding hole corresponding to the rotating shaft 404 is opened at the center of the friction disk 501. One side of the rotating shaft 404 passes through the interior of the sliding hole. With the cooperation of the sliding groove, the circumferential positioning effect between the rotating shaft 404 and the friction disk 501 is achieved. When the rotating shaft 404 rotates, it can drive the friction disk 501 to rotate synchronously. A set of friction protrusions is provided on one side of the extrusion disk 403 and the friction disk 501. The friction protrusions have a hemispherical structure. The friction protrusions of the extrusion disk 403 and the friction disk 501 are staggered. Therefore, when the extrusion disk 403 rotates, it cooperates with the friction protrusions... The device can intermittently press the friction disc 501 to one side, at which time the friction disc 501 slides under force. A support spring is installed between the driven gear 405 and the friction disc 501. The support spring pushes the friction disc 501 to reset. Combined with the friction protrusion, the friction disc 501 reciprocates. A transverse threaded rod 504 is provided at the center of the positioning frame 503. Therefore, the friction disc 501, connecting plate 502, positioning frame 503, and threaded rod 504 rotate synchronously. A positioning sleeve 505 is installed on the outer side of the threaded rod 504. The threaded rod 504 and the positioning sleeve 505 are slidably connected. A set of hinged swing plates is installed between the positioning sleeve 505 and the positioning housing 506. The swing plates realize the effect of movable connection between the positioning sleeve 505 and the positioning housing 506. When the positioning sleeve 505 moves, it can drive the positioning housing 506 to move up and down in conjunction with the swing plates, thereby realizing the effect of convenient unfolding and storage of a set of positioning housings 506. In this embodiment, a set of positioning housings 506 arranged in a circular array are installed on one side of the positioning frame 503. A set of sliding holes arranged in a circular array are opened on the basis of the positioning frame 503. The sliding holes are oval holes. A set of positioning bolts are installed on one side of the positioning housing 506. The positioning bolts pass through the interior of the sliding holes. The sliding holes cooperate with the positioning bolts to achieve the effect of circumferential and lateral positioning of the positioning housing 506. When the positioning frame 503 rotates, it drives the positioning housing 506 to rotate. A grinding strip 507 is installed on the inner side of the positioning housing 506. The positioning housing 506 positions the installation position of the grinding strip 507. In addition, the positioning housing 506 facilitates the quick installation and removal of the grinding strip 507. A stabilizing rod is provided at the bottom of the grinding strip 507. The stabilizing rod further stabilizes the installation position of the grinding strip 507. A set of chip removal grooves is opened at the top of the grinding strip 507. The chip removal grooves are inclined structures. In this embodiment, an adjusting nut 508 is installed on the outer side of the threaded rod 504. The pitch of the adjusting nut 508 and the threaded rod 504 is machined according to actual needs. A support spring is installed between the positioning sleeve 505 and the positioning frame 503. The support spring elastically supports the positioning sleeve 505 to one side. By rotating the adjusting nut 508 in conjunction with the elastic support, the positioning sleeve 505 is controlled to move laterally. When the positioning sleeve 505 moves, a linkage mechanism is formed, which realizes the effect of rapid adjustment of the grinding position of the grinding strip 507. When the grinding strip 507 contacts the inner wall of the bearing seat 3, the electric motor is controlled. The grinding wheel 507 is driven to rotate by the 401. At the same time, the grinding wheel 507 moves back and forth under force to quickly and finely grind the inner wall of the bearing seat 3. As the grinding wheel 507 moves back and forth, it can push the grinding waste outward. A locking bolt is installed on one side of the adjusting nut 508. The locking bolt locks the rotation position of the adjusting nut 508 to prevent the adjusting nut 508 from reversing after adjustment. The friction disc 501, connecting plate 502, positioning frame 503, threaded rod 504, positioning sleeve 505, positioning housing 506, grinding wheel 507, and adjusting nut 508 cooperate with each other to form the fine grinding assembly 5.

[0021] Example 2, based on Example 1, such as Figures 1-10 As shown, a quick clamp can be set on the basis of the bearing housing 3, and a conveying mechanism can be set on the basis of the quick clamp to enable the bearing housing 3 to be automatically positioned and transported.

[0022] The working principle of this embodiment: Fix the stabilizing plate 1 to the horizontal workbench with anchor bolts. Select a suitable position to install the positioning rod 102 through the positioning groove. Adjust the distance between the two positioning rods 102 to match the outer diameter of the bearing seat 3. Embed the electric motor 401 into the rectangular positioning groove of the stabilizing base 101 and the stabilizing top seat 2. After fixing with bolts, adjust the lateral position of the positioning sleeve 505 by rotating the adjusting nut 508 according to the inner diameter of the bearing seat 3. Rotate the adjusting nut 508 clockwise, and the positioning sleeve 505 moves towards the middle of the threaded rod 504. The oscillating plate drives the positioning housing 506 to retract, reducing the outer diameter of the grinding strip 507. Rotate counterclockwise, and the positioning housing 506 unfolds, increasing the outer diameter of the grinding strip 507. After adjustment, fix the adjusting nut 508 with locking bolts to ensure that the grinding strip 507 and the inner wall of the bearing seat 3 have an initial gap. Place the bearing seat 3 between the two positioning rods 102. Axial positioning is achieved by the limiting action of the positioning rods 102. Clamp the bearing seat 3 manually or with external clamps. Start the electric motor 401, drive the gear 402 to rotate, and drive the rotating shaft 404 and friction disk 501 to rotate synchronously through the driven gear 405. The extrusion disk 403 rotates with the drive shaft, and its hemispherical friction protrusions contact the protrusions of the friction disk 501 alternately, periodically pushing the friction disk 501 to move back and forth along the axial direction of the rotating shaft 404, driving the positioning frame 503 and the grinding strip 507 to generate axial vibration grinding. During the grinding process, the chip removal groove uses centrifugal force to discharge the grinding chips along the surface of the grinding strip 507. At the same time, an external coolant system can be connected to cool and lubricate the grinding area. The running time or grinding feed of the electric motor 401 can be set through the equipment control system. When the preset parameters are reached, the machine will stop automatically and the processed bearing seat 3 can be taken out. If the grinding strip 507 needs to be replaced, the grinding strip 507 can be quickly removed from the positioning housing 506, and then the worn grinding strip 507 can be replaced.

Claims

1. A precision grinding device for the inner surface of a bearing housing, comprising: The device comprises a stabilizing plate (1), a driving mechanism (4), and a friction disc (501). A stabilizing base (101) is provided above the stabilizing plate (1). A stabilizing top seat (2) is installed above the stabilizing base (101) with bolts. Two symmetrically distributed positioning rods (102) are installed above the stabilizing plate (1). A set of bearing seats (3) is installed between the two positioning rods (102). The device is characterized in that a driving mechanism (4) is installed between the stabilizing base (101) and the stabilizing top seat (2). A friction disc (501) is installed on one side of the driving mechanism (4). A set of connecting plates (502) arranged in a ring array is provided on one side of the friction disc (501). A positioning frame (503) is provided on one side of the connecting plate (502). The friction disc (501), the connecting plate (502), and the positioning frame (503) are an integral structure.

2. The bearing housing inner surface fine grinding equipment according to claim 1, characterized in that, A set of evenly distributed connecting grooves are opened at the upper position of the stabilizing plate (1), and the bottom of the positioning rod (102) is installed on the inner side of the connecting groove.

3. The bearing housing inner surface fine grinding equipment according to claim 1, characterized in that, A positioning groove is provided at the top of the stable base (101) and at the bottom of the stable top seat (2). An electric motor (401) is installed between the two positioning grooves. A drive gear (402) and a pressing plate (403) are installed on the outer side of the drive shaft of the electric motor (401).

4. The bearing housing inner surface fine grinding equipment according to claim 1, characterized in that, A rotating groove is provided at the top of the stable base (101) and at the bottom of the stable top seat (2). The rotating groove is a circular arc stepped structure. A rotating shaft (404) is installed between the two rotating grooves. A driven gear (405) is installed on the outer side of the rotating shaft (404). The driven gear (405) meshes with the drive gear (402). The electric motor (401), drive gear (402), extrusion plate (403), rotating shaft (404), and driven gear (405) cooperate with each other to form a drive mechanism (4). A blocking ring is provided on each side of the driven gear (405).

5. The bearing housing inner surface fine grinding equipment according to claim 4, characterized in that, A long, narrow sliding groove is provided on the outer side of the rotating shaft (404). A sliding hole corresponding to the rotating shaft (404) is provided at the center of the friction disk (501). One side of the rotating shaft (404) passes through the interior of the sliding hole. A set of friction protrusions is provided on one side of the extrusion disk (403) and the friction disk (501). The friction protrusions are hemispherical in shape. The friction protrusions of the extrusion disk (403) and the friction disk (501) are staggered. A support spring is installed between the driven gear (405) and the friction disk (501).

6. The bearing housing inner surface fine grinding equipment according to claim 1, characterized in that, A set of positioning housings (506) arranged in a ring array are installed on one side of the positioning frame (503). A set of sliding holes arranged in a ring array are opened on the basis of the positioning frame (503). A set of positioning bolts are installed on one side of the positioning housings (506), and the positioning bolts pass through the interior of the sliding holes.

7. The bearing housing inner surface fine grinding equipment according to claim 6, characterized in that, The positioning frame (503) has a transverse threaded rod (504) at its center, and a positioning sleeve (505) is installed on the outer side of the threaded rod (504). A set of hinged swing plates are installed between the positioning sleeve (505) and the positioning housing (506).

8. The bearing housing inner surface fine grinding equipment according to claim 7, characterized in that, A grinding strip (507) is installed on the inner side of the positioning housing (506). A stabilizing rod is provided at the bottom of the grinding strip (507), and a set of chip removal grooves is opened at the top of the grinding strip (507).

9. The bearing housing inner surface fine grinding equipment according to claim 7, characterized in that, An adjusting nut (508) is installed on the outer side of the threaded rod (504), a support spring is installed between the positioning sleeve (505) and the positioning frame (503), and a locking bolt is installed on one side of the adjusting nut (508). The friction disc (501), connecting plate (502), positioning frame (503), threaded rod (504), positioning sleeve (505), positioning housing (506), grinding strip (507), and adjusting nut (508) cooperate with each other to form the fine grinding assembly (5).

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