A raceway face superfinishing device

Abstract

The utility model discloses a race face superfinishing device, including mounting panel and race face superfinishing piece, is installed with servo motor and the relative mounting panel sliding setting's mobile frame on the mounting panel, is installed with the eccentric shaft of intercalation in the mobile frame at the output of servo motor, and the eccentric shaft is rotatably installed on the mounting panel, and the outside of eccentric shaft is equipped with eccentric sleeve, the compression sleeve for limiting eccentric sleeve relative eccentric shaft rotation and the locking piece for circumferential restriction compression sleeve position, the outside of eccentric sleeve is equipped with the rolling element, and the rolling element is installed in the mobile frame, and race face superfinishing piece is installed on the mobile frame. Through eccentric sleeve and eccentric shaft to realize the stroke adjustment of race face superfinishing piece, and the steel ring processing of different width specifications is adapted.

Description

Technical Field

[0001] This utility model relates to the grinding of bearing raceway surfaces, specifically a raceway surface ultra-precision device. Background Technology

[0002] The traditional method for ultra-precision machining in the bearing industry involves using a product fixture to center and clamp the workpiece, which rotates under the drive of a drive disc. During the ultra-precision machining process, an ultra-precision oilstone is inserted into the raceway to perform rough and ultra-precision machining. When machining the bearing rings, the oilstone needs to oscillate back and forth in a direction perpendicular to the workpiece surface, coordinating with the workpiece's rotational speed and pressure on the workpiece surface for ultra-precision machining. The following problems exist for machining the raceway surfaces of single / double row ball roller and tapered roller bearings:

[0003] 1. For ultra-precision machining of raceway surfaces of different widths, the stroke of the oilstone assembly along the raceway surface needs to be adjustable.

[0004] 2. Because the oilstone assembly has high-frequency reciprocating motion, especially at the commutation pole position, there will be a problem of large inertia. Utility Model Content

[0005] The technical problem to be solved by this utility model is:

[0006] How to solve the ultra-precision machining operation of bearing raceway surfaces with different width specifications.

[0007] To solve the above-mentioned technical problems, the inventors, through practice and summarization, derived the technical solution of this utility model, which adopts the following technical solution:

[0008] A raceway surface ultra-precision device, comprising:

[0009] Mounting plate, on which a movable frame is slidably mounted relative to the mounting plate and a drive structure for driving the movable frame to reciprocate.

[0010] The raceway surface is ultra-precision machined, and the raceway surface ultra-precision machined part is installed on the moving frame.

[0011] In a more preferred technical solution, the drive structure includes an eccentric shaft mounted on the mounting plate, the output end of the servo motor being installed and inserted into the moving frame. The eccentric shaft is rotatably mounted on the mounting plate, and an eccentricity adjustment structure is installed on the outside of the eccentric shaft. A rolling element is fitted on the outside of the eccentricity adjustment structure and is installed in the moving frame.

[0012] In a more preferred technical solution, the eccentricity adjustment structure includes an eccentric sleeve fitted on the outside of the eccentric shaft, a clamping sleeve for limiting the rotation of the eccentric sleeve relative to the eccentric shaft, and a locking member for axially limiting the position of the clamping sleeve.

[0013] In a better technical solution, both the eccentric sleeve and the clamping sleeve have annular toothed surfaces on their opposite sides.

[0014] A circumferential limiting body is installed on the eccentric shaft, and the circumferential limiting body slides into the inner side of the clamping sleeve.

[0015] In a better technical solution, a guide is installed on the mounting plate, one end of which passes through a spring and slides onto the moving frame, while the end of the spring is attached to the moving frame.

[0016] In a better technical solution, a ruler is installed on the mounting plate, and a scale pointer is installed on the moving frame.

[0017] In a more optimized technical solution, the ultra-precision device also includes an ultra-precision base, on which a reference base is mounted. On the reference base, a side support and a worm gear seat are mounted. On the side support, a vertical adjustment shaft and a worm shaft are mounted. The vertical adjustment shaft and the worm shaft form a transmission engagement through gear transmission. The worm shaft and the worm gear seat form a transmission engagement. A drive motor is mounted on the top of the worm gear seat. The output end of the drive motor is connected to a vertical slide plate through a lead screw. The vertical slide plate is used to fix the mounting plate.

[0018] In a better technical solution, the ultra-precision device also includes an electric drive spindle assembly and a steel ring clamping mechanism. The steel ring clamping mechanism clamps the steel ring onto the electric drive spindle assembly, which is used to drive the steel ring to rotate.

[0019] The electric drive spindle assembly also has a separate positioning component on the rear side.

[0020] In a more preferred technical solution, the steel ring clamping mechanism includes a mounting base, a cylinder mounted on the mounting base, a vertical slide connected to the cylinder piston rod, the vertical slide sliding relative to the mounting base and a connecting frame mounted thereon, and a clamping component mounted on the connecting frame.

[0021] The clamping component is a self-aligning bearing.

[0022] In a more favorable technical solution, the positioning component includes an arc-shaped seat, on which two radially distributed limiting claw seats are slidably fitted, and positioning rollers are mounted on the limiting claw seats.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. This utility model adjusts the angle of the eccentric sleeve relative to the eccentric shaft by the clamping sleeve under the action of the locking member, thereby adjusting the stroke of the rolling member driving the moving frame. The eccentric sleeve and the clamping sleeve are restricted by the annular toothed surface after the angle adjustment. Furthermore, the clamping sleeve can only be adjusted axially by the action of the circumferential limiting body.

[0025] 2. This utility model uses a spring between the mounting plate and the moving frame to achieve buffering of the moving frame at the commutation pole position, reducing the inertia at the commutation pole position and effectively ensuring machining accuracy.

[0026] 3. This utility model also includes an electric drive spindle assembly and a steel ring clamping mechanism to achieve the clamping action of the steel ring. The electric drive spindle assembly drives the steel ring to rotate at high speed, which, together with the ultra-precision machined part (ultra-precision oilstone) on the raceway surface, completes the ultra-precision operation of the raceway surface. At the same time, the clamping part uses a self-aligning bearing to achieve the end face floating clamping operation.

[0027] 4. This utility model also features an ultra-precision base, which allows for lateral position adjustment to enable the operation of bearing steel rings of different sizes. The angle between the worm gear seat and the bearing steel ring is adjusted by rotating the vertical adjustment shaft, thereby achieving angle adjustment. Furthermore, a drive motor is used to adjust the vertical position of the vertical slide plate and mounting plate to achieve ultra-precision operation of steel rings of different widths.

[0028] 5. This utility model has an arc-shaped seat independently set on the outside of the electric drive spindle assembly, and two radially adjustable positioning rollers are installed on the arc-shaped seat to complete centerless ultra-precision machining. Attached Figure Description

[0029] Figure 1 This is a structural diagram of the ultra-precision base of this utility model;

[0030] Figure 2 This is a schematic diagram of the mounting plate and its structure according to the present invention;

[0031] Figure 3 This is a top view of the mounting plate and its structure according to the present invention;

[0032] Figure 4 for Figure 3 Cross-sectional view at point AA;

[0033] Figure 5 This is a schematic diagram of the overall structure of the ultra-precision device of this utility model;

[0034] Figure 6 for Figure 5 Overall structural diagram of the steel ring clamping mechanism;

[0035] Figure 7 for Figure 5 Structural diagram of the center positioning component.

[0036] In the picture:

[0037] 100. Electric drive spindle assembly; 110. Steel ring clamping mechanism; 111. Mounting base; 112. Vertical slide; 113. Cylinder; 114. Connecting frame; 115. Clamping component; 120. Positioning component; 121. Arc-shaped seat; 122. Limiting claw seat; 123. Positioning roller;

[0038] 212. Servo motor; 213. Ultra-precision machined raceway surface parts; 214. Eccentric shaft; 215. Eccentric sleeve; 216. Clamping sleeve; 217. Locking component; 218. Rolling component; 219. Moving frame; 2110. Spring component; 2111. Guide component; 2112. Circumferential restraint body;

[0039] 200, reference base; 220, vertical adjustment shaft; 221, side support; 222, worm shaft; 223, worm gear seat; 224, drive motor; 225, mounting plate; 227, vertical slide plate. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0041] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Example 1

[0043] like Figures 1 to 4 As shown, a raceway surface ultra-precision device includes:

[0044] Mounting plate 225, on which a movable frame 219 is slidably disposed relative to the mounting plate 225 and a drive structure for driving the movable frame 219 to perform reciprocating motion;

[0045] The raceway surface ultra-precision machined part 213 is mounted on the movable frame 219.

[0046] In practice, the moving frame 219 is driven to reciprocate through the drive structure, so as to realize the machining operation of the bearing raceway surface by the ultra-precision machined part 213.

[0047] Example 2

[0048] In the ultra-precision device, such as Figures 1 to 5 As shown, the drive structure includes a servo motor 212 mounted on a mounting plate 225. An eccentric shaft 214 is installed at the output end of the servo motor 212 and inserted into the moving frame 219. The eccentric shaft 214 is rotatably mounted on the mounting plate 225. An eccentricity adjustment structure is installed on the outside of the eccentric shaft 214. A rolling element 218 is fitted on the outside of the eccentricity adjustment structure and is installed in the moving frame 219.

[0049] The eccentricity adjustment structure includes an eccentric sleeve 215 fitted on the outside of the eccentric shaft 214, a clamping sleeve 216 for limiting the rotation of the eccentric sleeve 215 relative to the eccentric shaft 214, and a locking member 217 for axially limiting the position of the clamping sleeve 216.

[0050] In practical use, the servo motor 212 drives the eccentric shaft 214 to rotate, which in turn rotates the rolling element 218 to achieve the high-frequency reciprocating motion of the moving frame 219. The eccentricity of the rolling element 218 is adjusted by using the eccentric sleeve 215 relative to the eccentric shaft 214, thereby adjusting the single-stroke stroke. The movement of the moving frame 219 drives the high-frequency motion of the raceway surface ultra-precision machined part 213, thereby realizing the machining operation of the raceway surface.

[0051] Both the eccentric sleeve 215 and the clamping sleeve 216 have annular toothed surfaces on opposite sides; the position angle is adjusted by the annular toothed surfaces, thereby adjusting the eccentricity of the rolling element relative to the eccentric shaft 214.

[0052] A circumferential limiting body 2112 is mounted on the eccentric shaft 214, and the circumferential limiting body 2112 is slidably fitted inside the clamping sleeve 216. The circumferential limiting body 2112 enables the clamping sleeve 216 to move only in the axial direction, and the annular toothed surface between the clamping sleeve 214 and the eccentric sleeve 215 is used to fix the eccentric sleeve 215.

[0053] Example 3

[0054] In the aforementioned raceway surface ultra-precision device, to address the problem of large inertia at the commutation pole position, such as... Figure 2 and Figure 3 As shown, a guide member 2111 is mounted on the mounting plate 225. One end of the guide member 2111 passes through the spring member 2110 and is slidably fitted onto the moving frame 219. The end of the spring member 2110 is attached to the moving frame 219. The spring member 2110 provides cushioning for the moving frame 219 to reduce the problem of large inertia at extreme positions. At the same time, it ensures that the moving frame 219 and the outer peripheral surface of the rolling member 218 are always in close contact, avoiding the occurrence of vibration.

[0055] Example 4

[0056] In the raceway surface ultra-precision device, such as Figure 1As shown, in order to clearly and intuitively observe the travel of the moving frame 219, a scale is installed on the mounting plate 225 and a scale pointer is installed on the moving frame 219.

[0057] Example 5

[0058] In the raceway surface ultra-precision device, such as Figure 1 As shown, the ultra-precision device also includes an ultra-precision base, which can move laterally relative to the base of the machine tool (it can be a linear slide) to accommodate the machining of steel rings of different diameters. A reference base 200 is installed on the ultra-precision base, and a side support 221 and a worm gear seat 223 are installed on the reference base 200. A vertical adjustment shaft 220 and a worm shaft 222 are installed on the side support 221. The vertical adjustment shaft 220 and the worm shaft 222 form a transmission engagement through gear transmission. The worm shaft 222 and the worm gear seat 223 form a transmission engagement. A drive motor 224 is installed on the top of the worm gear seat 223. The output end of the drive motor 224 is connected to a vertical slide plate 227 through a lead screw. The vertical slide plate 227 is used to fix the mounting plate 225. By operating the vertical adjustment shaft 220, the worm gear seat 223 is rotated by a certain angle via the worm shaft 222. The worm gear seat 223 is equipped with a scale, which allows for clear observation and adjustment of the angle. This allows for adjustment of the tilt angle of the ultra-precision machined raceway surface to accommodate bearing steel rings of different specifications.

[0059] Example 6

[0060] In the raceway surface ultra-precision device, such as Figures 5 to 7 As shown, the ultra-precision device also includes an electric drive spindle assembly 100 and a steel ring clamping mechanism 110. The steel ring clamping mechanism 110 clamps the steel ring onto the electric drive spindle assembly 100, and the electric drive spindle assembly 100 is used to drive the steel ring to rotate.

[0061] The electric drive spindle assembly 100 also has a positioning component 120 independently installed on the rear side.

[0062] like Figure 6 As shown, the steel ring clamping mechanism 110 includes a mounting base 111, a cylinder 113 is mounted on the mounting base 111, the piston rod of the cylinder 113 is connected to a vertical slide block 112, the vertical slide block 112 slides relative to the mounting base 111 and a connecting frame 114 is mounted on it, and a clamping member 115 is mounted on the connecting frame 114.

[0063] The clamping component 115 uses a self-aligning bearing to achieve floating clamping operation.

[0064] like Figure 7 As shown, the positioning component 120 includes an arc-shaped seat 121, on which two radially distributed limiting claw seats 122 are slidably fitted, and positioning rollers 123 are mounted on the limiting claw seats 122.

[0065] In use, the steel ring clamping mechanism 110 drives the clamping part 115 downward to achieve the clamping operation on the top of the steel ring, pressing the steel ring onto the drive disk of the electric drive spindle assembly 100. The high-speed rotation of the electric drive spindle assembly 100 causes the ring to rotate. During the rotation, it cooperates with the raceway surface ultra-precision machining part 213 to achieve ultra-precision machining of the raceway surface.

[0066] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A raceway surface ultra-precision device, characterized in that, include: Mounting plate (225), on which a movable frame (219) is slidably mounted relative to the mounting plate (225) and a drive structure for driving the movable frame (219) to reciprocate; The raceway surface ultra-precision machined part (213) is mounted on the movable frame (219).

2. The raceway surface ultra-precision device according to claim 1, characterized in that, The drive structure includes a servo motor (212) mounted on a mounting plate (225). An eccentric shaft (214) inserted into a moving frame (219) is mounted on the output end of the servo motor (212). The eccentric shaft (214) is rotatably mounted on the mounting plate (225). An eccentricity adjustment structure is mounted on the outside of the eccentric shaft (214). A rolling element (218) is fitted on the outside of the eccentricity adjustment structure. The rolling element (218) is installed in the moving frame (219).

3. The raceway surface ultra-precision device according to claim 2, characterized in that, The eccentricity adjustment structure includes an eccentric sleeve (215) fitted on the outside of the eccentric shaft (214), a clamping sleeve (216) for limiting the rotation of the eccentric sleeve (215) relative to the eccentric shaft (214), and a locking member (217) for axially limiting the position of the clamping sleeve (216).

4. The raceway surface ultra-precision device according to claim 3, characterized in that, Both the eccentric sleeve (215) and the clamping sleeve (216) have annular toothed surfaces on opposite sides; A circumferential restraint (2112) is mounted on the eccentric shaft (214), and the circumferential restraint (2112) is slidably fitted inside the clamping sleeve (216).

5. The raceway surface ultra-precision device according to claim 1, characterized in that, The mounting plate (225) is equipped with a guide (2111), one end of which passes through the spring (2110) and is slidably fitted onto the movable frame (219), and the end of the spring (2110) is attached to the movable frame (219).

6. The raceway surface ultra-precision device according to claim 1, characterized in that, A ruler is mounted on the mounting plate (225), and a scale pointer is mounted on the moving frame (219).

7. The raceway surface ultra-precision device according to claim 1, characterized in that, The ultra-precision device also includes an ultra-precision base, on which a reference base (200) is installed. A side support (221) and a worm gear seat (223) are installed on the reference base (200). A vertical adjustment shaft (220) and a worm shaft (222) are installed on the side support (221). The vertical adjustment shaft (220) and the worm shaft (222) form a transmission engagement through gear transmission. The worm shaft (222) and the worm gear seat (223) form a transmission engagement. A drive motor (224) is installed on the top of the worm gear seat (223). The output end of the drive motor (224) is connected to a vertical slide plate (227) through a lead screw. The vertical slide plate (227) is used to fix the mounting plate (225).

8. The raceway surface ultra-precision device according to claim 1, characterized in that, The ultra-precision device also includes an electric drive spindle assembly (100) and a steel ring clamping mechanism (110). The steel ring clamping mechanism (110) clamps the steel ring onto the electric drive spindle assembly (100), which is used to drive the steel ring to rotate. The electric drive spindle assembly (100) also has a positioning component (120) independently provided on the rear side.

9. The raceway surface ultra-precision device according to claim 8, characterized in that, The steel ring clamping mechanism (110) includes a mounting base (111), a cylinder (113) is mounted on the mounting base (111), the piston rod of the cylinder (113) is connected to a vertical slide (112), the vertical slide (112) slides relative to the mounting base (111) and a connecting frame (114) is mounted on it, and a clamping component (115) is mounted on the connecting frame (114); The clamping component (115) is a self-aligning bearing.

10. The raceway surface ultra-precision device according to claim 9, characterized in that, The positioning component (120) includes an arc-shaped seat (121), on which two radially distributed limiting claw seats (122) are slidably fitted, and a positioning roller (123) is mounted on the limiting claw seats (122).

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