Inner ring polishing device for production and processing of needle roller bearing

Abstract

The utility model relates to the production technical field of needle roller bearing, and disclose a kind of inner ring polishing device for needle roller bearing production and processing, including base, the clamping mechanism is provided in the base top. By the rotation of bidirectional screw rod driven by first servo motor, two moving blocks can be synchronously moved towards each other, and then drive the clamping block to accurately clamp and loosen the inner ring of needle roller bearing, the hole matched on the movable block and the groove matched on the moving frame and fixed plate are matched with each other, not only effectively limit the moving direction of moving block and clamping block, prevent deviation, also ensure the stability and accuracy of clamping process, ensure that inner ring does not occur in polishing process Shaking, lay the foundation for high-quality polishing, the limiting strip equidistantly arranged in the inner side of clamping block can separate the inner part of clamping block into multiple independent clamping areas, multiple needle roller bearing inner rings can be clamped at a time, greatly improve the number of single processing, further improve the overall processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of needle roller bearing production technology, specifically to an inner ring grinding device for needle roller bearing production and processing. Background Technology

[0002] Grinding the inner ring of a needle roller bearing refers to the process of grinding the inner ring of the bearing. This process aims to improve the precision, smoothness, and surface quality of the bearing's inner ring, thereby ensuring the bearing's performance and service life.

[0003] According to announcement number CN 222589054 U, an inner ring grinding device for needle roller bearing production and processing includes an operating table. A power motor is installed on one side of the top of the operating table. One end of the power motor is connected to a grinding wheel. Supports are provided on both sides of the top of the operating table. A screw is provided on one side of the support. One end of the screw is threaded through the side wall of the adjacent support and rotatably connected to an arc-shaped clamping plate. The two supports are fixedly connected by a brush plate. The bottom of the outer ring of the arc-shaped clamping plate is slidably connected to the top of the adjacent support. An installation groove is opened on one side of the operating table. A lead screw is horizontally arranged in the inner cavity of the installation groove. A threaded sleeve is fitted on the outer ring of the lead screw. One side of the threaded sleeve is fixedly connected to one side of the adjacent support.

[0004] This device, through its structural design, allows personnel to simultaneously grind the inner ring of the bearing and scrape away any remaining debris from previous machining operations on the worktable. This reduces subsequent maintenance steps, improves the overall cleanliness of the device, protects the production environment, and provides convenience for users. However, the clamping structure in this device typically can only clamp a single inner ring at a time, which cannot meet the needs of mass production. Utility Model Content

[0005] The purpose of this invention is to provide an inner ring grinding device for the production and processing of needle roller bearings, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an inner ring grinding device for needle roller bearing production and processing, comprising a base, supporting legs symmetrically fixedly connected to the bottom of the base in the front, back, left and right directions, a clamping mechanism provided on the top of the base, and a grinding mechanism provided on the top of the base;

[0007] The clamping mechanism includes fixed columns, which are symmetrically fixedly connected to the top of the base. Fixed seats are fixedly connected to the tops of the four fixed columns. A first fixed plate is fixedly connected to the bottom left side of each fixed seat, and a second fixed plate is fixedly connected to the bottom right side of each fixed seat. A bidirectional lead screw is rotatably connected to the right side of the first fixed plate, and a first servo motor is fixedly connected to the right side of the second fixed plate. Moving blocks are connected to the surface of the bidirectional lead screw with staggered threads. Limiting rods are symmetrically fixedly connected to the front and rear sides of the right side of the first fixed plate. A moving frame is symmetrically fixedly connected to one side of each moving block, and a clamping block is fixedly connected to the other end of the moving frame. Limiting strips are equidistantly fixedly connected to the inner side of each clamping block.

[0008] Preferably, the output end of the first servo motor is fixedly connected to the right end of the bidirectional lead screw, and the right end of the limiting rod is fixedly connected to the left side of the second fixing plate.

[0009] Preferably, the movable block has a hole on its left side that matches the limiting rod, and the movable block is slidably connected to the surface of the limiting rod through the hole. The limiting rod limits the two bidirectional lead screws, so that the two movable blocks move towards each other as the bidirectional lead screws rotate.

[0010] Preferably, the first fixing plate and the second fixing plate have a groove on the other side that matches the movable frame, and the surface of the movable frame is penetrated and slidably connected to the groove. The two clamping blocks are located above the fixing seat, and the limiting strip can separate the inner sides of the two clamping blocks, which can clamp multiple needle roller bearing inner rings.

[0011] Preferably, the grinding mechanism includes a first fixed frame, which is fixedly connected to the top of the base. A hydraulic cylinder is fixedly connected to the top of the first fixed frame, and a moving plate is fixedly connected to the output end of the hydraulic cylinder. A second fixed frame is fixedly connected to the bottom of the moving plate. A second servo motor is fixedly connected to the bottom of the inner wall of the second fixed frame. A rotating plate is fixedly connected to the output end of the second servo motor. A rotating shaft is provided near the left side of the top of the rotating plate. A grinding roller is fixedly connected to the bottom end of the rotating shaft. A fixed cylinder is fixedly connected to the bottom of the second fixed frame. An external gear ring is fixedly connected to the outer wall of the fixed cylinder. A gear is fixedly connected to the surface of the rotating shaft.

[0012] Preferably, the top of the rotating plate has a hole near the left side that matches the rotating shaft, and the rotating shaft surface passes through and is rotatably connected to the hole.

[0013] Preferably, the inner diameter of the fixed cylinder is larger than the diameter of the output shaft of the second servo motor to prevent friction between the output shaft of the second servo motor and the inner wall of the fixed cylinder, and the gear meshes with the external gear ring.

[0014] Compared with the prior art, this utility model provides an inner ring grinding device for the production and processing of needle roller bearings, which has the following beneficial effects:

[0015] 1. This inner ring grinding device for needle roller bearing production and processing uses a first servo motor to drive a bidirectional lead screw to rotate. Utilizing the staggered threads on the screw, two moving blocks can move synchronously towards or away from each other, thereby causing the clamping block to precisely and quickly clamp and release the inner ring of the needle roller bearing. The matching holes on the limiting rod and the moving block, as well as the matching grooves on the moving frame and the fixed plate, work together to effectively limit the movement direction of the moving block and the clamping block, preventing deviation, and ensuring the stability and accuracy of the clamping process. This ensures that the inner ring will not wobble during grinding, laying the foundation for high-quality grinding. The equidistant limiting strips on the inner side of the clamping block can divide the inside of the clamping block into multiple independent clamping areas, enabling the clamping of multiple needle roller bearing inner rings at once. This greatly increases the number of rings processed in a single operation, further improving overall processing efficiency and reducing processing time and costs.

[0016] 2. This inner ring grinding device for needle roller bearing production and processing includes a grinding mechanism where a hydraulic cylinder drives a moving plate and a second fixed frame to move up and down, flexibly adjusting the distance between the grinding roller and the inner ring to meet the grinding requirements of inner rings of different specifications. A second servo motor drives a rotating plate to rotate, causing the rotating shaft and grinding roller to revolve around the center of the rotating plate. Simultaneously, due to the meshing of the gear and the external gear ring, the rotating shaft also rotates during the revolution of the grinding roller, achieving a composite motion of both revolution and rotation of the grinding roller. This unique motion mode can grind the inner ring of the needle roller bearing from all directions and multiple angles. Compared with a single motion mode, it improves the uniformity and quality of grinding, ensuring a better grinding effect on the inner ring surface. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of the clamping mechanism of this utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the structural clamping block and limiting strip of this utility model;

[0021] Figure 4 This is a three-dimensional schematic diagram of the first fixed frame and the movable plate of this utility model.

[0022] Figure 5This is a three-dimensional schematic diagram of the grinding mechanism of this utility model.

[0023] In the diagram: 1. Base; 2. Support leg; 3. Clamping mechanism; 31. Fixed column; 32. Fixed seat; 33. First fixed plate; 34. Second fixed plate; 35. Bidirectional lead screw; 36. First servo motor; 37. Moving block; 38. Limiting rod; 39. Moving frame; 311. Clamping block; 312. Limiting strip; 4. Grinding mechanism; 41. First fixed frame; 42. Hydraulic cylinder; 43. Moving plate; 44. Second fixed frame; 45. Second servo motor; 46. Rotating plate; 47. Rotating shaft; 48. Grinding roller; 49. Fixed cylinder; 411. External gear ring; 412. Gear. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] This utility model provides the following technical solution:

[0027] Example 1

[0028] Please see Figure 1-3 This utility model provides a technical solution: an inner ring grinding device for needle roller bearing production and processing, including a base 1, with support legs 2 symmetrically fixedly connected to the bottom of the base 1 in the front, back, left and right directions, a clamping mechanism 3 provided on the top of the base 1, and a grinding mechanism 4 provided on the top of the base 1.

[0029] The clamping mechanism 3 includes fixed columns 31, which are symmetrically fixed to the top of the base 1. Fixed seats 32 are fixedly connected to the top of the four fixed columns 31. A first fixed plate 33 is fixedly connected to the bottom left side of the fixed seat 32, and a second fixed plate 34 is fixedly connected to the bottom right side of the fixed seat 32. A bidirectional lead screw 35 is rotatably connected to the right side of the first fixed plate 33, and a first servo motor 36 is fixedly connected to the right side of the second fixed plate 34. A moving block 37 is connected to the surface of the bidirectional lead screw 35 with staggered threads on the left and right sides. Limiting rods 38 are symmetrically fixed to the front and back sides of the right side of the first fixed plate 33. A moving frame 39 is symmetrically fixed to one side of the moving block 37. A clamping block 311 is fixedly connected to the other end of the moving frame 39. Limiting strips 312 are equidistantly fixed to the inner side of the clamping block 311.

[0030] The output end of the first servo motor 36 is fixedly connected to the right end of the bidirectional lead screw 35, and the right end of the limit rod 38 is fixedly connected to the left side of the second fixed plate 34.

[0031] The movable block 37 has a hole on its left side that matches the limiting rod 38. The movable block 37 is slidably connected to the surface of the limiting rod 38 through the hole. The limiting rod 38 limits the two bidirectional lead screws 35, so that the two movable blocks 37 move towards each other as the bidirectional lead screws 35 rotate.

[0032] The first fixing plate 33 and the second fixing plate 34 have grooves on their other sides that match the movable frame 39. The movable frame 39 is connected to the grooves by passing through the surface and sliding left and right. The two clamping blocks 311 are located above the fixing seat 32. The limiting strip 312 can separate the inner sides of the two clamping blocks 311 and can clamp multiple needle roller bearing inner rings.

[0033] Example 2

[0034] Please see Figure 4-5 Furthermore, based on Example 1, a polishing mechanism 4 was obtained.

[0035] The grinding mechanism 4 includes a first fixed frame 41, which is fixedly connected to the top of the base 1. A hydraulic cylinder 42 is fixedly connected to the top of the first fixed frame 41. A moving plate 43 is fixedly connected to the output end of the hydraulic cylinder 42. A second fixed frame 44 is fixedly connected to the bottom of the moving plate 43. A second servo motor 45 is fixedly connected to the bottom of the inner wall of the second fixed frame 44. A rotating plate 46 is fixedly connected to the output end of the second servo motor 45. A rotating shaft 47 is arranged near the left side of the top of the rotating plate 46. A grinding roller 48 is fixedly connected to the bottom of the rotating shaft 47. A fixed cylinder 49 is fixedly connected to the bottom of the second fixed frame 44. An external gear ring 411 is fixedly connected to the outer wall of the fixed cylinder 49. A gear 412 is fixedly connected to the surface of the rotating shaft 47.

[0036] The top of the rotating plate 46 is provided with a hole near the left side that matches the rotating shaft 47, and the rotating shaft 47 is rotatably connected to the hole through the surface of the rotating plate 46.

[0037] The inner diameter of the fixed cylinder 49 is larger than the diameter of the output shaft of the second servo motor 45 to prevent the output shaft of the second servo motor 45 from rubbing against the inner wall of the fixed cylinder 49, and the gear 412 meshes with the external gear ring 411.

[0038] In actual operation, when this device is used, the first servo motor 36 is started, and its output end drives the bidirectional lead screw 35 to rotate. Since the surface of the bidirectional lead screw 35 is provided with staggered left and right threads, the two moving blocks 37 connected to the lead screw threads will move synchronously towards each other along the limiting rod 38 under the action of thread transmission. The moving blocks 37 drive the clamping blocks 311 closer via the moving frame 39, placing the inner ring of the needle roller bearing inside the clamping blocks 311. The limiting strip 312 inside the clamping blocks 311 can separate, position, and clamp multiple inner rings. During this process, the matching holes on the limiting rod 38 and the moving blocks 37, and the matching grooves on the moving frame 39 and the fixed plate work together to ensure that the clamping blocks 311 move smoothly and accurately and fix the inner rings, completing the clamping and fixing work of the inner rings.

[0039] According to the specifications of the inner ring to be ground, the hydraulic cylinder 42 is controlled to extend and retract, driving the moving plate 43, the second fixed frame 44, and other components to move up and down, thereby adjusting the distance between the grinding roller 48 and the inner ring to a suitable position. The second servo motor 45 is started, and its output end drives the rotating plate 46 to rotate. The rotating plate 46 then drives the rotating shaft 47 and the grinding roller 48 to revolve around the center of the rotating plate 46. During the revolution, the gear 412 fixed on the surface of the rotating shaft 47 meshes with the outer toothed ring 411 on the outer wall of the fixed cylinder 49. As the gear 412 revolves with the rotating shaft 47, it will rotate on its own axis under the meshing action, thereby driving the grinding roller 48 to rotate on its own axis. This combined revolution and rotation motion of the grinding roller 48 can grind the surface of the needle roller bearing inner ring from all directions and multiple angles until the required machining accuracy and surface quality requirements are achieved.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A grinding device for the inner ring of a needle roller bearing, comprising a base (1), characterized in that: The base (1) has symmetrically fixed support legs (2) at the bottom, front, back, left and right. The base (1) has a clamping mechanism (3) at the top and a grinding mechanism (4) at the top. The clamping mechanism (3) includes fixed columns (31), which are symmetrically fixed to the top of the base (1) in the front, back and left and right. Fixed seats (32) are fixedly connected to the top of the four fixed columns (31). A first fixed plate (33) is fixedly connected to the bottom left of the fixed seat (32). A second fixed plate (34) is fixedly connected to the bottom right of the fixed seat (32). A bidirectional lead screw (35) is rotatably connected to the right side of the first fixed plate (33). A first servo motor (36) is fixedly connected to the right side of the second fixed plate (34). A moving block (37) is connected to the surface of the bidirectional lead screw (35) with staggered threads in the left and right. Limiting rods (38) are symmetrically fixed to the front and back sides of the right side of the first fixed plate (33). A moving frame (39) is symmetrically fixed to one side of the moving block (37). A clamping block (311) is fixedly connected to the other end of the moving frame (39). Limiting strips (312) are fixedly fixed to the inner side of the clamping block (311) at equal intervals.

2. The inner ring grinding device for needle roller bearing production and processing according to claim 1, characterized in that: The output end of the first servo motor (36) is fixedly connected to the right end of the bidirectional lead screw (35), and the right end of the limiting rod (38) is fixedly connected to the left side of the second fixing plate (34).

3. The inner ring grinding device for needle roller bearing production and processing according to claim 1, characterized in that: The moving block (37) has a hole on its left side that matches the limiting rod (38), and the moving block (37) slides left and right through the hole to be connected to the surface of the limiting rod (38).

4. The inner ring grinding device for needle roller bearing production and processing according to claim 1, characterized in that: The first fixing plate (33) and the second fixing plate (34) have a groove on the other side that matches the movable frame (39), and the surface of the movable frame (39) is connected to the groove by sliding left and right. The two clamping blocks (311) are located above the fixing seat (32), and the limiting strip (312) can separate the inner sides of the two clamping blocks (311).

5. The inner ring grinding device for needle roller bearing production and processing according to claim 1, characterized in that: The grinding mechanism (4) includes a first fixed frame (41), which is fixedly connected to the top of the base (1). A hydraulic cylinder (42) is fixedly connected to the top of the first fixed frame (41). A moving plate (43) is fixedly connected to the output end of the hydraulic cylinder (42). A second fixed frame (44) is fixedly connected to the bottom of the moving plate (43). A second servo motor (45) is fixedly connected to the bottom of the inner wall of the second fixed frame (44). A rotating plate (46) is fixedly connected to the output end of the second servo motor (45). A rotating shaft (47) is provided near the left side of the top of the rotating plate (46). A grinding roller (48) is fixedly connected to the bottom of the rotating shaft (47). A fixed cylinder (49) is fixedly connected to the bottom of the second fixed frame (44). An external gear ring (411) is fixedly connected to the outer wall of the fixed cylinder (49). A gear (412) is fixedly connected to the surface of the rotating shaft (47).

6. The inner ring grinding device for needle roller bearing production and processing according to claim 5, characterized in that: The top of the rotating plate (46) near the left side has a hole that matches the rotating shaft (47), and the surface of the rotating shaft (47) is rotatably connected to the hole.

7. The inner ring grinding device for needle roller bearing production and processing according to claim 5, characterized in that: The inner diameter of the fixed cylinder (49) is larger than the diameter of the output shaft of the second servo motor (45), and the gear (412) meshes with the external gear ring (411).

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