Clamping tool for correcting bearing in numerical control machining
By using CNC-machined clamping fixtures to fix the outer and inner rings of the bearing respectively, the problem of quality damage during bearing straightening by traditional fixtures is solved, and efficient bearing straightening is achieved.
Patent Information
- Application Number
- CN202423101665.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Traditional clamps may leave indentations on the bearing surface during bearing straightening due to limited contact area, affecting quality and resulting in low straightening efficiency.
The clamping fixture, which is manufactured using CNC machining, includes a fixed base plate, a first driving component, a clamping assembly, a movable push rod, and a support component. The clamping assembly is set according to the bearing model to fix the outer and inner rings of the bearing respectively. Multiple sets of support components and movable push rods are used for stable clamping, and the bearing is corrected by CNC machining.
This reduces quality damage during bearing straightening and improves straightening efficiency and quality.
Smart Images
Figure CN223506709U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of bearing straightening, and in particular to a clamping fixture for bearing straightening using CNC machining. Background Technology
[0002] Bearings, as an indispensable core component of modern mechanical equipment, play a crucial role in supporting rotating parts, reducing frictional loss, and ensuring rotational accuracy. They are designed to withstand the various forces generated during mechanical operation while maintaining efficient and stable operation.
[0003] However, when bearings are subjected to loads exceeding their design limits, especially under static overload or sudden impact, plastic deformation may occur. This deformation not only originates from the heavy pressure during installation but can also be caused by abnormal loads or external impacts during operation. Furthermore, if impurities such as metal shavings or burrs are introduced into the bearing, they can cause indentations and wear on the bearing surface during rolling. Over time, this damage can accumulate and lead to changes in the bearing's shape.
[0004] To address bearing deformation, existing techniques include using precision testing equipment to determine the bearing's tilt and specific location, followed by securing the bearing firmly with specialized clamps and performing necessary correction operations. However, when it comes to fine milling the inner and outer surfaces of the bearing to restore its shape, traditional jaw clamps or point clamps may leave indentations on the bearing surface during correction due to their limited contact area, thus affecting the final quality. Utility Model Content
[0005] This utility model aims to at least partially solve one of the technical problems in the related art.
[0006] Therefore, the purpose of this utility model is to propose a clamping fixture for CNC machining of bearings. The fixture uses a clamping component set according to the model and size of the bearing to be corrected to support the bearing surface. The outer ring and inner ring of the bearing are fixed according to the end face of the bearing to be corrected, thereby reducing the quality damage during bearing correction and improving the overall correction efficiency of the bearing.
[0007] To achieve the above objectives, this utility model proposes a clamping fixture for bearing straightening using CNC machining, comprising a fixed base plate, a first driving component, a clamping assembly, a movable push rod, a second driving component, and a support component. The first driving component is disposed on the fixed base plate; the clamping assembly is disposed at the output end of the first driving component; multiple sets of support components are disposed on the same horizontal end face; the second driving component is correspondingly disposed on the support component; the movable push rod is disposed at the output end of the second driving component; and the support component is disposed on both the movable push rod and the bottom wall of the fixed base plate.
[0008] The present invention relates to a CNC machining clamping fixture for bearing straightening. It employs a clamping assembly designed according to the model and size of the bearing to be straightened, which supports the bearing surface and fixes the outer and inner rings of the bearing according to the end face to be straightened, thereby reducing quality damage during bearing straightening and improving the overall straightening efficiency of the bearing.
[0009] In addition, the clamping fixture for bearing straightening using CNC machining as proposed above may also have the following additional technical features:
[0010] Specifically, the clamping assembly includes a fixed shaft, an annular baffle, an adjusting mechanism, and an outer ring positioning mechanism, wherein the fixed shaft is disposed at the output end of the first driving component; the annular baffle is formed on the fixed shaft; the adjusting mechanism is movably disposed on the fixed shaft; and the outer ring positioning mechanism is disposed on the adjusting mechanism.
[0011] Specifically, the adjusting mechanism includes an outer ring, an outer ring fastening component, an inner ring, and a limiting block, wherein the limiting block is movably disposed on the fixed shaft; the inner ring is disposed on the limiting block; the outer ring is rotatably disposed on the inner ring; and the outer ring fastening component is disposed on the outer ring.
[0012] Specifically, the outer ring positioning mechanism includes a fixed plate, a connecting rod, a fastening nut, and an outer ring abutting component. The fixed plate is disposed on the outer ring; the connecting rod is movably disposed on the fixed plate; the fastening nut is threaded onto the connecting rod; and the outer ring abutting component is disposed on the bottom wall of the connecting rod and is sleeved on the movable top rod.
[0013] Specifically, the inner wall of the outer ring fastening component is provided with a conical inner fastening block, and the inner diameter of the conical inner fastening block is smaller than the outer diameter of the inner ring. The conical inner fastening block and the inner ring are spaced apart.
[0014] Specifically, the fixed plate is provided with an opening groove, and the outer diameter of the fastening nut is larger than the diameter of the opening groove.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the clamping assembly structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the adjustment mechanism of this utility model.
[0020] As shown in the figure: 10, fixed base plate; 20, first driving component; 30, clamping assembly; 301, fixed shaft; 302, annular baffle; 303, adjusting mechanism; 3031, outer ring; 3032, outer ring fastening component; 3033, inner ring; 3034, limiting block; 304, outer ring positioning mechanism; 3041, fixed plate; 3042, connecting rod; 3043, fastening nut; 3044, outer ring abutment component; 40, movable top rod; 50, second driving component; 60, supporting component. Detailed Implementation
[0021] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.
[0022] The following description, in conjunction with the accompanying drawings, describes a CNC machining clamping fixture for bearing straightening according to an embodiment of the present invention.
[0023] like Figure 1-3 As shown, the CNC machining clamping fixture for bearing straightening according to this utility model embodiment includes a fixed base plate 10, a first driving component 20, a clamping assembly 30, a movable push rod 40, a second driving component 50, and a support component 60.
[0024] The first driving component 20 is disposed on the fixed base plate 10, the clamping assembly 30 is disposed at the output end of the first driving component 20, and multiple sets of support components 60 are disposed on the same horizontal end face. The second driving component 50 is disposed on the support components 60, the movable push rod 40 is disposed at the output end of the second driving component 50, and the movable push rod 40 and the bottom wall of the fixed base plate 10 are respectively provided with support components 60.
[0025] It should be noted that the first drive component 20 is a stepper motor, which is connected to a power source via a control switch. When the first drive component 20 is running, it drives the clamping assembly 30 to rotate. The bearing to be corrected is mounted on the clamping assembly 30. The second drive component 50 is a hydraulic push rod. When the second drive component 50 is running, it pushes the movable push rod 40 against the bearing to be corrected, clamping the bearing. During the clamping process, the bearing is fixed by adjusting the fastening assembly 30.
[0026] In one embodiment of this utility model, such as Figure 2 As shown, the clamping assembly 30 includes a fixed shaft 301, an annular baffle 302, an adjusting mechanism 303, and an outer ring positioning mechanism 304.
[0027] The fixed shaft 301 is located at the output end of the first drive component 20, the annular baffle 302 is located on the fixed shaft 301, the adjusting mechanism 303 is movably located on the fixed shaft 301, and the outer ring positioning mechanism 304 is located on the adjusting mechanism 303.
[0028] It should be noted that the outer diameter of the annular baffle 302 is smaller than the outer diameter of the fixed shaft 301, and the fixed shaft 301 is a hollow shaft. The annular baffle 302, together with the fixed shaft 301, abuts against the bearing to be corrected. Subsequently, the outer ring positioning mechanism 304 fixes the outer ring of the bearing when correcting the inner ring of the bearing.
[0029] In one embodiment of this utility model, such as Figure 2 As shown, the adjustment mechanism 303 includes an outer ring 3031, an outer ring fastening component 3032, an inner ring 3033, and a limiting block 3034.
[0030] The limiting block 3034 is movably mounted on the fixed shaft 301, the inner ring 3033 is mounted on the limiting block 3034, the outer ring 3031 is rotatably mounted on the inner ring 3033, and the outer ring fastening component 3032 is mounted on the outer ring 3031.
[0031] It should be noted that the limiting block 3034 is a trapezoidal block with a limiting groove on the surface of the fixed shaft 301. The limiting block 3034 slides within the limiting groove, thereby allowing the inner ring 3033 to slide on the fixed shaft 301. The outer ring fastening component 3032 rotates on the inner ring 3033 via rollers, and then moves on the fixed shaft 301 to abut against the outer surface of the bearing to be straightened, working in conjunction with the outer ring positioning mechanism 304 to abut against the bearing to be straightened.
[0032] In one embodiment of this utility model, such as Figure 2 As shown, the outer ring positioning mechanism 304 includes a fixed plate 3041, a connecting rod 3042, a fastening nut 3043, and an outer ring abutment component 3044.
[0033] The fixed plate 3041 is mounted on the outer ring 3031, and the connecting rod 3042 is movably mounted on the fixed plate 3041. The fastening nut 3043 is threaded onto the connecting rod 3042, and the outer ring abutment component 3044 is mounted on the bottom wall of the connecting rod 3042 and is sleeved on the movable top rod 40.
[0034] It should be noted that the fixed plate 3041 described in this embodiment is an alloy steel plate, and the connecting rod 3042 moves at the upper limit of the fixed plate 3041. During the movement, the outer ring abutting component 3044 abuts against the bearing to be corrected.
[0035] In one embodiment of this utility model, such as Figure 3 As shown, the inner wall of the outer ring fastening component 3032 is provided with a conical inner fastening block, and the inner diameter of the conical inner fastening block is smaller than the outer diameter of the inner ring 3033. The conical inner fastening block and the inner ring 3033 are spaced apart.
[0036] It should be noted that the conical inner retaining block provided on the inner wall of the outer ring fastening component 3032 abuts against the surface of the bearing to be straightened when the adjusting mechanism 303 moves on the fixed shaft 301, and cooperates with the outer ring fastening component 3032 to abut against the other end face of the outer surface of the bearing to be straightened. The bearing to be straightened is fixed, and then the inner surface of the bearing to be straightened is machined.
[0037] In one embodiment of this utility model, such as Figure 2 As shown, the fixed plate 3041 has an opening slot, and the outer diameter of the fastening nut 3043 is larger than the diameter of the opening slot.
[0038] It should be noted that when the connecting rod 3042 is adjusted on the fixed plate 3041 and moves to abut against the bearing to be corrected, the fastening nut 3043 is adjusted by thread adjustment so that the fastening nut 3043 abuts against the fixed plate 3041, thereby fixing the connecting rod 3042.
[0039] Furthermore, in order to ensure that the connecting rod 3042 is fixed and stable after adjustment, a fixing nut is provided on the connecting rod 3042. The fixing nut is located below the fixing plate 3041 and is pressed and fixed when the thread of the fastening nut 3043 is adjusted.
[0040] Specifically, the processing steps for the bearing to be corrected are as follows: First, select a fixed shaft 301 of appropriate size according to the size of the bearing to be corrected. Then, mill an annular baffle 302 on the fixed shaft 301 according to the inner and outer diameters of the bearing, so that the annular baffle 302 abuts against the outer and inner rings of the bearing to be corrected, and abuts against the bearing through the fixed shaft 301. Next, operate the second drive component 50 to push the movable push rod 40 against the inner ring of the bearing to be corrected, thereby fixing the bearing to be corrected. Then, operate the first drive component 20. When the first drive component 20 operates, it drives the fixed shaft 301 to rotate, thereby driving the fixed bearing to rotate. The outer surface of the bearing is milled by turning and milling, thereby completing the correction of the outer surface of the bearing.
[0041] When machining the inner ring of the bearing to be straightened, the clamping assembly 30 is moved on the fixed shaft 301, and the inner ring 3033 is limited by the limiting block 3034, so that the outer ring fastening component 3032 tightly abuts against the outer surface of the bearing to be straightened. At the same time, the connecting rod 3042 is moved on the fixed plate 3041. The movement of the connecting rod 3042 drives the outer ring abutting component 3044 to abut against the other side of the outer ring of the bearing to be straightened, thereby moving the movable push rod 40 and the second driving component 50 apart, and then the inner ring of the bearing to be straightened is milled and straightened by turning and milling.
[0042] In summary, the CNC machining clamping fixture of this invention for bearing straightening uses clamping components set according to the model and size of the bearing to be straightened to support the bearing surface, and fixes the outer ring and inner ring of the bearing according to the end face to be straightened, thereby reducing quality damage during bearing straightening and improving the overall straightening efficiency of the bearing.
[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A clamping fixture for bearing straightening using CNC machining, characterized in that, It includes a fixed base plate (10), a first driving component (20), a clamping assembly (30), a movable push rod (40), a second driving component (50), and a support component (60), wherein, The first driving component (20) is disposed on the fixed base plate (10); The clamping assembly (30) is disposed at the output end of the first driving component (20); The support component (60) is in multiple sets, and the multiple sets of support components (60) are respectively arranged on the same horizontal end face; The second driving component (50) is correspondingly disposed on the support component (60); The movable push rod (40) is located at the output end of the second drive component (50); The movable top rod (40) and the bottom wall of the fixed base plate (10) are respectively provided with the support component (60).
2. The clamping fixture for bearing straightening using CNC machining according to claim 1, characterized in that, The clamping assembly (30) includes a fixed shaft (301), an annular baffle (302), an adjusting mechanism (303), and an outer ring positioning mechanism (304), wherein, The fixed shaft (301) is disposed at the output end of the first drive component (20); The annular baffle (302) is formed on the fixed shaft (301); The adjustment mechanism (303) is movably mounted on the fixed shaft (301); The outer ring positioning mechanism (304) is mounted on the adjustment mechanism (303).
3. The clamping fixture for bearing straightening using CNC machining according to claim 2, characterized in that, The adjusting mechanism (303) includes an outer ring (3031), an outer ring fastening component (3032), an inner ring (3033), and a limiting block (3034), wherein, The limiting block (3034) is movably mounted on the fixed shaft (301); The inner collar (3033) is disposed on the limiting block (3034); The outer ring (3031) is rotatably disposed on the inner ring (3033); The outer ring fastening component (3032) is disposed on the outer ring (3031).
4. The clamping fixture for bearing straightening using CNC machining according to claim 3, characterized in that, The outer ring positioning mechanism (304) includes a fixed plate (3041), a connecting rod (3042), a fastening nut (3043), and an outer ring abutment component (3044), wherein, The fixing plate (3041) is disposed on the outer ring (3031); The connecting rod (3042) is movably mounted on the fixed plate (3041); The fastening nut (3043) is threaded onto the connecting rod (3042); The outer ring abutting component (3044) is disposed on the bottom wall of the connecting rod (3042), and the outer ring abutting component (3044) is sleeved on the movable top rod (40).
5. The clamping fixture for bearing straightening using CNC machining according to claim 3, characterized in that, The inner wall of the outer ring fastening component (3032) is provided with a conical inner fastening block, and the inner diameter of the conical inner fastening block is smaller than the outer diameter of the inner ring (3033). The conical inner fastening block and the inner ring (3033) are spaced apart.
6. The clamping fixture for bearing straightening using CNC machining according to claim 4, characterized in that, The fixed plate (3041) is provided with an opening groove, and the outer diameter of the fastening nut (3043) is larger than the diameter of the opening groove.