Deep groove ball bearing inner ring raceway superfinishing machine

Abstract

The utility model provides deep -groove ball bearing inner race channel super -finishing machine relates to bearing processing technical field to solve in the super -finishing process, bearing inner race produces bigger reverse action to oil stone, this reaction can accelerate the wear and tear of oil stone's problem, including: displacement frame, the L shape frame inboard fixed junction of displacement frame bottom has super -finishing piece, the inside rotation of installation hole is connected with the built -in disc, the top of built -in disc is equipped with the inner adjusting groove, the center position of inner adjusting groove is equipped with the expansion hole, the inside sliding connection of inner adjusting groove has the clamping frame. Through the rotation adjusting screw rod, makes displacement frame stable adjustment position, and then drives bottom L shape frame inboard fixed junction's super -finishing piece accurate adjustment relative position, ensures in the super -finishing process, super -finishing piece always keeps the best contact state with the channel, and through the super -finishing piece and bearing surface keep contact simultaneously, prevent super -finishing piece and bearing axis keep perpendicular, to pass through the super -finishing treatment of two -way rotation mode.

Description

Technical Field

[0001] This utility model belongs to the field of bearing processing technology, and more specifically, it relates to an ultra-precision machine for the inner ring channel of a deep groove ball bearing. Background Technology

[0002] Deep groove ball bearings are crucial components in modern machinery. Their primary function is to support rotating mechanical parts, reduce the coefficient of friction during motion, and ensure rotational accuracy. In the bearing manufacturing field, ultra-precision machining plays an irreplaceable role in improving the quality of the inner ring raceway of deep groove ball bearings. Through ultra-precision machining, not only can the surface roughness of the raceway be significantly improved, waviness reduced, and roundness enhanced, but the surface alteration layer formed during grinding can also be removed, increasing the surface bearing area and lubrication effect. Therefore, an ultra-precision machining machine for the raceway is needed to facilitate the machining of the bearing inner ring raceway.

[0003] In the existing ultra-precision machining process of bearing inner ring grooves, the main method used is to use an oscillating oilstone for ultra-precision treatment. However, in the design of traditional ultra-precision machines, the working surface of the oilstone is always perpendicular to the bearing axis during ultra-precision operation. This vertical arrangement causes the normal load in the contact area between the oilstone and the bearing inner ring groove to be concentrated. During the ultra-precision treatment process, the bearing inner ring generates a large reverse force on the oilstone. This reverse force not only accelerates the wear of the oilstone, but also transmits it to the oil head component through the oilstone. Under long-term action, it is easy to cause fatigue damage or even structural failure of the oil head. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model relates to an ultra-precision machine for the inner ring of a deep groove ball bearing. The machine addresses the issue that during ultra-precision processing, the working surface of the honing stone remains perpendicular to the bearing axis, resulting in a significant reverse force exerted by the bearing inner ring on the honing stone. This reverse force not only accelerates the wear of the honing stone but also transmits it through the honing stone to the oil head component, potentially leading to fatigue damage or even structural failure of the oil head over time.

[0005] This utility model provides an ultra-precision machining process for the inner ring raceway of a deep groove ball bearing, achieved through the following specific technical means: A deep groove ball bearing inner ring raceway ultra-precision machine includes: a mounting frame; a mounting hole at the bottom of the mounting frame; a reversing block rotatably connected inside the mounting frame; an inner groove inside the reversing block; an adjusting screw rotatably connected inside the inner groove; a displacement frame slidably connected inside the inner groove; an ultra-precision block fixed to the inner side of the L-shaped frame at the bottom of the displacement frame; an inner plate rotatably connected inside the mounting hole; an inner adjusting groove at the top of the inner plate; a telescopic hole at the center of the inner adjusting groove; a clamping frame slidably connected inside the inner adjusting groove; an upper pressure plate fixed to the top of the inner plate; four sets of bottom fixing rods fixed to the bottom of the mounting frame; telescopic cylinders fixed to the bottom of the four sets of bottom fixing rods; and an inner top frame fixed to the telescopic rods of the telescopic cylinders.

[0006] Preferably, the mounting bracket is configured as a U-shaped structure, with an outer plate fixedly attached to the outer wall of the mounting bracket; a torsion motor is fixedly attached to the top of the mounting bracket; a drive motor is fixedly attached to the outer plate of the mounting bracket; a drive gear is connected to the motor shaft of the drive motor; and an annular groove is connected to the inner wall of the mounting hole.

[0007] Preferably, the reversing block is connected to the torsion motor; the inner groove is a rectangular groove with a circular through hole connected to it, and the inner groove is connected to two sets of rectangular through holes; the end of the adjusting screw is rotatably connected to the circular through hole of the inner groove.

[0008] Preferably, the displacement frame is configured as a rectangular frame structure with threaded through holes. The displacement frame is connected to the adjusting screw through the threaded through holes. The bottom of the displacement frame is provided with an L-shaped frame, and the displacement frame is slidably connected in the rectangular through hole of the inner groove.

[0009] Preferably, the inner tray is configured as a disc-shaped structure; the inner adjusting groove is connected to a rectangular groove; the clamping frame is configured as an arrow-shaped structure, and the top of the clamping frame is provided with an external support protrusion.

[0010] Preferably, the clamping frame is provided with an internal retraction spring; a circular through hole is opened at the center of the upper pressure plate; a synchronous gear is fixedly connected to the bottom of the inner plate; the synchronous gear and the driving gear are connected by a snap-fit.

[0011] Preferably, the inner top frame is configured as a cylindrical structure, and a conical rod is fixedly connected to the top of the inner top frame; the conical rod of the inner top frame is inserted into the interior of the telescopic hole.

[0012] The ultra-precision machining tool for the inner ring of deep groove ball bearings proposed in this utility model has the following beneficial effects: 1. By setting an internal groove inside the reversing block, and rotating and connecting the adjusting screw and sliding displacement frame within it, the operator can easily rotate the adjusting screw according to the bearing inner ring grooves of different specifications and sizes, so that the displacement frame can be smoothly adjusted in position. This, in turn, drives the ultra-precision block fixed to the inner side of the bottom L-shaped frame to accurately adjust its relative position, greatly improving the adaptability of the ultra-precision block to different bearing inner ring grooves. This ensures that the ultra-precision block always maintains the best contact state with the groove during the ultra-precision process. At the same time, by keeping the ultra-precision block in contact with the bearing surface, it prevents the ultra-precision block from being perpendicular to the bearing axis, so that ultra-precision processing can be carried out by bidirectional rotation. 2. By utilizing the internal adjustment groove on the top of the inner plate, combined with the telescopic hole and the inner top frame, a unique and efficient control of the clamping frame is achieved. When it is necessary to fix the inner ring of the bearing, the telescopic cylinder is activated, and its telescopic rod pushes the inner top frame upward. The conical rod of the inner top frame inserts into the telescopic hole, thereby pushing the clamping frame outward from the internal adjustment groove. This allows the outer support protrusion on the clamping frame to fit tightly against the inner ring of the bearing. The outward expansion method achieves a stable clamping of the inner ring of the bearing. This clamping method can evenly distribute the clamping force, effectively avoiding the local stress concentration phenomenon that may occur in traditional clamping methods. This ensures the stability of the inner ring of the bearing during the ultra-precision processing and reduces the adverse effects on machining accuracy caused by inner ring shaking or displacement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional assembly structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the three-dimensional assembly structure of this utility model from a bottom view.

[0015] Figure 3 This is an exploded structural diagram of the present invention.

[0016] Figure 4 This is an exploded bottom view structural diagram of this utility model.

[0017] Figure 5 This is a partial cross-sectional structural diagram of the present invention.

[0018] Figure 6 This utility model is composed of Figure 5 A schematic diagram of the enlarged structure of part A.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Mounting bracket; 101. Torsion motor; 102. Drive motor; 103. Drive gear; 104. Mounting hole; 2. Reversing block; 201. Internal slot; 202. Adjusting screw; 203. Displacement frame; 204. Ultra-precision block; 3. Internal mounting plate; 301. Internal adjustment groove; 302. Telescopic hole; 303. Clamping frame; 304. Internal retraction spring; 305. Upper pressure plate; 306. Synchronous gear; 4. Bottom fixing rod; 401. Telescopic cylinder; 402. Inner top frame. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0021] Example 1: As shown in the attached document Figure 1 To be continued Figure 6As shown: This utility model provides a superfinishing machine for the inner ring raceway of a deep groove ball bearing, comprising: a mounting frame 1; a mounting hole 104 is provided at the bottom of the mounting frame 1; a reversing block 2 is rotatably connected inside the mounting frame 1; the reversing block 2 is used to rotate under the drive of a torsion motor 101, so as to facilitate the superfinishing block 204 to perform superfinishing on the inner ring raceway of the bearing; an inner groove 201 is provided inside the reversing block 2; the inner groove 201 is used to assist in the installation of an adjusting screw 202 and a displacement frame 203, so as to facilitate the adjustment of both; an adjusting screw 202 is rotatably connected inside the inner groove 201; the adjusting screw 202 is used to control the displacement frame 203 under the action of the thread, so as to facilitate the adjustment of the displacement frame 203. The positioning facilitates adjustment of the relative position of the ultra-precision block 204; a displacement frame 203 is slidably connected inside the inner groove 201; the displacement frame 203 is used for position adjustment under the drive of the adjusting screw 202 to facilitate adjustment of the relative position of the ultra-precision block 204; the ultra-precision block 204 is fixedly connected to the inner side of the L-shaped frame at the bottom of the displacement frame 203; the ultra-precision block 204 is used for rotation adjustment under the drive of the reversing block 2 to facilitate ultra-precision treatment of the bearing inner ring groove; an inner mounting plate 3 is rotatably connected inside the mounting hole 104; the inner mounting plate 3 is used to cooperate with the inner adjustment groove 301 to install the clamping frame 303 to facilitate its adjustment; an inner adjustment groove 301 is opened on the top of the inner mounting plate 3; the inner adjustment groove 301 is used for... The inner adjusting groove 301 has a telescopic hole 302 at its center. The telescopic hole 302 assists in the installation of the inner top frame 402, facilitating its telescopic adjustment and control of the clamping frame 303. The clamping frame 303 is slidably connected inside the inner adjusting groove 301. The clamping frame 303 expands outward under the push of the inner top frame 402, facilitating clamping of the bearing inner ring and maintaining stability during the ultra-precision process. An upper pressure plate 305 is fixedly connected to the top of the inner mounting plate 3. The upper pressure plate 305 constrains the top of the inner mounting plate 3 to facilitate... The inner adjusting groove 301 is used to constrain the clamping frame 303, facilitating its adjustment. Four sets of bottom fixing rods 4 are fixed to the bottom of the mounting frame 1. These bottom fixing rods 4 are used to fix the telescopic cylinder 401, ensuring its stability. The telescopic cylinder 401 is fixed to the bottom of the four sets of bottom fixing rods 4. The telescopic cylinder 401 controls the telescopic adjustment of the inner top frame 402, thereby controlling the outward expansion of the clamping frame 303 and facilitating the fixing of the bearing inner ring. The telescopic rod of the telescopic cylinder 401 is fixed to the inner top frame 402. The inner top frame 402 is used to telescopically adjust under the drive of the telescopic cylinder 401, pushing the clamping frame 303 to facilitate the fixing of the bearing inner ring and the ultra-precision machining of the bearing raceway.

[0022] Example 2: Based on Example 1, as shown in the appendix Figure 1 To be continued Figure 6As shown, the mounting frame 1 is configured with a U-shaped structure, and an outer plate is fixedly attached to the outer wall of the mounting frame 1. The mounting frame 1 is used to assist in the installation and fixation of other structures of the device to facilitate the overall stability of the device. A torsion motor 101 is fixedly attached to the top of the mounting frame 1. The torsion motor 101 is used to control the rotation adjustment of the reverse block 2 to facilitate the ultra-precision treatment of the inner groove by the ultra-precision block 204. A drive motor 102 is fixedly attached to the outer plate of the mounting frame 1. The drive motor 102 is used to control the rotation of the drive gear 103 to facilitate the synchronous drive. Gear 306 is used for rotation adjustment to facilitate the reverse rotation adjustment of the inner plate 3 and the reversing block 2; the motor shaft of the drive motor 102 is connected to a drive gear 103; the drive gear 103 is used to rotate under the drive of the drive motor 102 to facilitate the rotation adjustment of the synchronous gear 306, so as to facilitate the reverse rotation adjustment of the inner plate 3 and the reversing block 2; a circular groove is connected to the inner wall of the mounting hole 104; the mounting hole 104 is used to assist in the installation of the inner plate 3 to facilitate its rotation adjustment.

[0023] The reversing block 2 is connected to the torsion motor 101; the inner groove 201 is set as a rectangular groove, the inner groove 201 is connected to a circular through hole, and the inner groove 201 is connected to two sets of rectangular through holes; the end position of the adjusting screw 202 is rotatably connected in the circular through hole of the inner groove 201.

[0024] The displacement frame 203 is configured as a rectangular frame structure. The displacement frame 203 has a threaded through hole. The displacement frame 203 is connected to the adjusting screw 202 through the threaded through hole. The bottom of the displacement frame 203 is provided with an L-shaped frame. The displacement frame 203 is slidably connected in the rectangular through hole of the inner groove 201.

[0025] The inner plate 3 is designed as a disc; the inner adjustment groove 301 is connected to a rectangular groove; the clamping frame 303 is designed as an arrow-shaped structure, and the top of the clamping frame 303 is provided with an external support protrusion.

[0026] The clamping frame 303 is provided with an inner retraction spring 304; the inner retraction spring 304 is used to assist in the reset of the clamping frame 303, so as to facilitate the clamping frame 303 to help maintain the stability of the inner ring of the bearing; a circular through hole is opened at the center of the upper pressure plate 305; a synchronous gear 306 is fixedly connected to the bottom of the inner plate 3; the synchronous gear 306 is connected to the drive gear 103 through a snap-fit.

[0027] The inner top frame 402 is configured as a cylindrical structure, and a conical rod is fixed to the top of the inner top frame 402; the conical rod of the inner top frame 402 is inserted into the interior of the telescopic hole 302.

[0028] The specific usage and function of this embodiment are as follows: In this utility model, during use, the telescopic cylinder 401 is activated, and the telescopic rod of the telescopic cylinder 401 begins to extend upward, thereby driving the inner top frame 402 fixed to it to move upward. The conical rod at the top of the inner top frame 402 is precisely inserted into the telescopic hole 302 at the center of the inner adjustment groove 301 at the top of the inner plate 3. As the inner top frame 402 continues to rise, it will push the clamping frame 303, which is slidably connected inside the inner adjustment groove 301, to expand outward. The clamping frame 303 has an arrow-shaped structure, and its outer support protrusion at the top gradually comes into close contact with the inner wall of the bearing inner ring until the bearing inner ring is firmly clamped. Observe the specific dimensions and processing requirements of the bearing inner ring groove to be processed, and rotate the adjusting screw 202 manually or with the aid of tools. The adjusting screw 202 rotates in the circular through hole of the inner groove 201, so that when the adjusting screw 202 rotates, the displacement frame 203 will adjust its position along the rectangular through hole of the inner groove 201. The movement of the displacement frame 203 drives the bottom L The ultra-precision block 204, fixed to the inner side of the frame, moves synchronously, thereby precisely adjusting the position of the ultra-precision block 204 relative to the bearing inner ring groove. This allows the ultra-precision block 204 to accurately act on the target position of the groove during subsequent processing. The torsion motor 101 is turned on, and the output shaft of the torsion motor 101 drives the reverse block 2 to rotate inside the mounting frame 1. The rotation of the reverse block 2, in turn, drives the ultra-precision block 204 connected to it to make a circular motion around the bearing inner ring groove. The ultra-precision block 204 begins to perform ultra-precision treatment on the bearing inner ring groove. At the same time, the drive motor 102 is turned on, and the motor shaft of the drive motor 102 drives the drive gear 103 to rotate. The drive gear 103 engages with the synchronous gear 306 fixed to the bottom of the inner plate 3, driving the synchronous gear 306 to rotate. This achieves the reverse rotation adjustment between the inner plate 3 and the reverse block 2. The bearing inner ring rotates with the ultra-precision block 204, and during the rotation, the ultra-precision block 204 performs ultra-precision treatment on the bearing inner ring groove, further improving the uniformity and surface quality of the ultra-precision treatment.

[0029] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0030] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0031] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. Ultra-precision machining of the inner ring raceway of deep groove ball bearings, including: Mounting bracket (1); characterized in that: a mounting hole (104) is provided at the bottom of the mounting bracket (1); a reversing block (2) is rotatably connected inside the mounting bracket (1); an inner groove (201) is provided inside the reversing block (2); an adjusting screw (202) is rotatably connected inside the inner groove (201); a displacement frame (203) is slidably connected inside the inner groove (201); an ultra-precision block (204) is fixedly connected to the inner side of the L-shaped frame at the bottom of the displacement frame (203); the mounting hole (104) is rotatably connected inside the inner groove (104). The mounting bracket (1) is equipped with an inner tray (3); an inner adjustment groove (301) is provided on the top of the inner tray (3); a telescopic hole (302) is provided at the center of the inner adjustment groove (301); a clamping frame (303) is slidably connected inside the inner adjustment groove (301); an upper pressure plate (305) is fixedly connected to the top of the inner tray (3); four sets of bottom fixing rods (4) are fixedly connected to the bottom of the mounting bracket (1); a telescopic cylinder (401) is fixedly connected to the bottom of the four sets of bottom fixing rods (4); and an inner top frame (402) is fixedly connected to the telescopic rod of the telescopic cylinder (401).

2. The ultra-precision machining center for the inner ring raceway of a deep groove ball bearing according to claim 1, characterized in that: The mounting bracket (1) is configured as a U-shaped structure, and an outer plate is fixedly connected to the outer wall of the mounting bracket (1); a torsion motor (101) is fixedly connected to the top of the mounting bracket (1); a drive motor (102) is fixedly connected to the outer plate of the mounting bracket (1); a drive gear (103) is connected to the motor shaft of the drive motor (102); and an annular groove is connected to the inner wall of the mounting hole (104).

3. The ultra-precision machining center for the inner ring raceway of a deep groove ball bearing according to claim 2, characterized in that: The reversing block (2) is connected to the torsion motor (101); the inner groove (201) is set as a rectangular groove, the inner groove (201) is connected to a circular through hole, and the inner groove (201) is connected to two sets of rectangular through holes; the end position of the adjusting screw (202) is rotatably connected in the circular through hole of the inner groove (201).

4. The ultra-precision machining center for the inner ring raceway of a deep groove ball bearing according to claim 1, characterized in that: The displacement frame (203) is configured as a rectangular frame structure. The displacement frame (203) has a threaded through hole. The displacement frame (203) is connected to the adjusting screw (202) through the threaded through hole. The bottom of the displacement frame (203) is provided with an L-shaped frame. The displacement frame (203) is slidably connected in the rectangular through hole of the inner groove (201).

5. The ultra-precision machining center for the inner ring raceway of a deep groove ball bearing according to claim 1, characterized in that: The inner plate (3) is configured as a disc-shaped structure; the inner adjustment groove (301) is connected to a rectangular groove; the clamping frame (303) is configured as an arrow-shaped structure, and the top of the clamping frame (303) is provided with an outer support protrusion.

6. The ultra-precision machine for the inner ring raceway of a deep groove ball bearing according to claim 2, characterized in that: The clamping frame (303) is provided with an internal retraction spring (304); a circular through hole is opened at the center of the upper pressure plate (305); a synchronous gear (306) is fixedly connected to the bottom of the inner plate (3); the synchronous gear (306) and the driving gear (103) are connected by a snap-fit.

7. The ultra-precision machining center for the inner ring raceway of a deep groove ball bearing according to claim 1, characterized in that: The inner top frame (402) is configured as a cylindrical structure, and a conical rod is fixed to the top of the inner top frame (402); the conical rod of the inner top frame (402) is inserted into the interior of the telescopic hole (302).

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