Deep groove ball bearing inner ring key groove slotting device
By using a three-jaw chuck and clamp on a vertical slotting machine to fix the inner ring of a deep groove ball bearing, the problem of machining keyways on the assembled bearing inner ring in the prior art is solved, thus achieving the effect of shortening the delivery cycle and expanding the scope of application.
Patent Information
- Application Number
- CN202422923234.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing technologies make it difficult to directly machine keyways on the inner ring of pre-assembled deep groove ball bearings, resulting in long delivery cycles for small-batch customized bearings, and the existing equipment has limited applicability.
A deep groove ball bearing inner ring keyway grooving device is adopted, which combines a vertical slotting machine with a three-jaw chuck and a clamping device. The bearing is fixed by the clamping device of the three-jaw chuck to ensure that the inner ring does not rotate, and the keyway is directly machined on the bearing product using the slotting machine.
It shortens the delivery cycle for small-batch customized bearings and is applicable to bearing inner rings of different specifications, thus expanding the applicability of the device.
Smart Images
Figure CN223518667U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to deep groove ball bearing processing equipment field especially, it relates to a deep groove ball bearing inner race key groove slotting device. BACKGROUND
[0002] The structure of deep groove ball bearing (abbreviation bearing) includes outer ring, inner race, retainer and multiple steel balls, the steel ball is arranged between the inner and outer rings, and the retainer makes multiple steel balls keep uniform distance.
[0003] In many application scenarios, key groove needs to be set up on the inner wall of the inner race to establish the connection between the inner race and the shaft, especially for the one-way rotating bearing, the key groove needs to be set up on the inner race.
[0004] At present, the key groove is mainly set up on the inner race by the key groove machine with high automation, and the setting process of the key groove is arranged before the assembly process of the bearing. A series of debugging is needed to set up the key groove on the inner race by the key groove machine, and a lot of debugging time is consumed. In many cases, the customer has special needs, and the width and depth of the key groove on the inner race are customized on the basis of the standard bearing, but the quantity requirement is only several to dozens. For this special customized bearing, the inner race is not suitable for processing on the key groove machine. Even if the key groove of the required size is first processed on the inner race by the key groove machine, and then the inner race is assembled with the corresponding bearing, the inner race flows into the production line, and then experiences the complete manufacturing and assembling process, a relatively long delivery cycle will be generated, which may not meet the needs of the customer for timely delivery. If the key groove can be directly set up on the finished product of the standard bearing that has been processed, the manufacturing cycle of the bearing will undoubtedly be greatly shortened, but there is no device to realize this function at present. For example, when the key groove is processed on the inner race of the assembled bearing by the key groove machine, the outer ring of the bearing is clamped and fixed, but the inner race is still free to rotate, so it is difficult to process the key groove. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a deep groove ball bearing inner race key groove slotting device. The utility model has the advantages of shortening the delivery cycle of small-batch customized inner race key groove bearing, and wide application range.
[0006] The technical scheme of the utility model: a deep groove ball bearing inner race key groove slotting device, including vertical slotter, the worktable surface of vertical slotter is equipped with three jaw chuck, the top surface of three jaw chuck's three clamping claws is equipped with clamping device respectively;
[0007] The clamping device includes the fixed positioning plate of clamping jaw, the inner side end of positioning plate is equipped with positioning groove, the side wall of positioning groove is equipped with positioning convex, the upper portion of positioning plate is equipped with the pressure plate that can move radially, and the pressure plate is equipped with the pressure bolt that connects positioning plate.
[0008] The long hole of the pressing plate is perpendicular to the axis of the three-jaw chuck, and the pressing bolt is connected to the positioning plate through the long hole.
[0009] The lower side of the outer end of the pressing plate is provided with an adjusting bolt connected to the positioning plate.
[0010] The bottom surface of the pressing plate is provided with a pressing protrusion.
[0011] The pressing protrusion is located at the inner end of the pressing plate.
[0012] The bottom surface of the positioning plate is provided with a through groove, and the through groove is provided with a supporting plate.
[0013] The supporting protrusion is located at the inner end of the supporting plate.
[0014] The top surface of the outer end of the supporting plate is provided with an anti-loosening bolt.
[0015] Compared with the prior art, the utility model discloses a vertical slotting machine for processing the keyway on the bearing inner ring, a three-jaw chuck is arranged on the workbench of the vertical slotting machine, a clamping device is arranged on the claw of the three-jaw chuck, the bearing is accurately positioned on the workbench of the vertical slotting machine, the inner ring of the bearing is fixed, and the bearing does not move during the machining process, so that the keyway can be directly machined on the finished product of the bearing, and the delivery cycle is shortened. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the overhead view schematic diagram of three-jaw chuck.
[0017] Figure 2 It is Figure 1 It is the section view at A-A.
[0018] Figure 3 It is the front view schematic diagram of positioning plate.
[0019] Figure 4 It is the overhead view schematic diagram of positioning plate.
[0020] The marks in the drawings are: 1-three jaw chuck, 2-claw, 3-positioning plate, 4-positioning groove, 5-positioning protrusion, 6-pressing plate, 7-pressing bolt, 8-long hole, 9-adjusting bolt, 10-pressing protrusion, 11-through slot, 12-supporting plate, 13-supporting protrusion, 14-anti-loose bolt. DETAILED DESCRIPTION
[0021] The utility model will be further explained in connection with the drawings and examples, but not as the basis for limiting the utility model.
[0022] Example. A deep groove ball bearing inner ring key groove slotting device, as shown in Figure, including vertical slotting machine, the worktable surface of vertical slotting machine is equipped with three jaw chuck 1, the top surface of three clamps 2 of three jaw chuck 1 is equipped with holder. Figure 1
[0023] The holder includes the positioning plate 3 fixed with the claw 2, the positioning plate 3 is screw connected with the claw 2, the inner side end of the positioning plate 3 is equipped with the positioning groove 4, the positioning groove 4 is vertically through the top surface of the positioning plate 3, the vertical side wall of the positioning groove 4 is equipped with the positioning protrusion 5, the top of the positioning plate 3 is equipped with the pressing plate 6, and the pressing plate 6 is equipped with the pressing bolt 7 connected with the positioning plate 3.
[0024] The pressing plate 6 is equipped with the long hole 8, and the long hole 8 is vertically through the axis of the three jaw chuck 1, and the pressing bolt 7 is connected with the positioning plate 3 after penetrating through the long hole 8.
[0025] The outer side end of the pressing plate 6 is equipped with the adjusting bolt 9 connected with the positioning plate 3.
[0026] The bottom surface of the pressing plate 6 is equipped with the pressing protrusion 10, and the pressing protrusion 10 is located at the inner side end of the pressing plate 6. The pressing protrusion 10 is arranged to avoid pressing the outer ring of the bearing on the pressing plate 6, so that the inner ring of the bearing can be pressed tightly.
[0027] The bottom surface of the positioning plate 3 is equipped with the through slot 11, the through slot 11 is equipped with the supporting plate 12, the cross-sectional shape of the supporting plate 12 is matched with the cross-sectional shape of the through slot 11, the two ends of the supporting plate 12 are located at the outer side of the two ends of the positioning plate 3 respectively, the top surface of the supporting plate 12 is equipped with the supporting protrusion 13 located below the pressing protrusion 10, the supporting protrusion 13 is located at the inner side end of the supporting plate 12, and the outer side end of the supporting plate 12 is equipped with the anti-loose bolt 14 on the top surface. The supporting protrusion 13 is arranged to ensure that the supporting plate 12 can support the inner ring of the bearing.
[0028] Method for use: the standard specification bearing is divided into two kinds, one is the bearing that has set up standard key groove, the other is the bearing that has not set up key groove, the bearing that has not set up key groove is taken in the embodiment and is processed. Including the following steps,
[0029] 1), adjust the claw 2 on the three claw chuck 1, make the bearing can be clamped to the three claw chuck 1.
[0030] 2), the bearing is placed between the three positioning plates 3, adjust the three claw chuck 1, make the claw 2 move inward, the positioning protrusion 5 is close to the outer ring of the bearing but not clamped.
[0031] 3), move the support plate 12, make the inner ring of the bearing be supported by the support protrusion 13, at this time, the outer ring of the bearing is in contact with the bottom surface of the positioning groove 4 or leaves a small gap, the outer ring of the bearing is not forced between the positioning plate 3, the positioning plate 3 is mainly used to determine the position of the bearing in the horizontal plane, and the position of the bearing in the height direction is determined by the support protrusion 13.
[0032] 4), adjust the three claw chuck 1, make the claw 2 move inward, and the positioning protrusion 5 clamps the bearing, at this time, the position of the bearing in the horizontal plane is positioned.
[0033] 5), move the pressing plate 6, make the lower pressing protrusion 10 be located at the top of the inner ring of the bearing, rotate the adjusting bolt 9, make the pressing plate 6 be substantially horizontal, tighten the pressing bolt 7, the pressing plate 6 clamps the inner ring of the bearing through the lower pressing protrusion 10, the inner ring of the bearing is clamped between the lower pressing protrusion 10 and the support protrusion 13, and the inner ring of the bearing cannot rotate.
[0034] 6), start the vertical slotting machine, and process the required size key groove on the inner ring of the bearing, and the processing position of the key groove should avoid the pressing plate.
[0035] Since the inner hole of the bearing is not shielded during the machining process, the slotting cutter of the slotting machine can enter, therefore, the utility model is also applicable to the bearing with a small shaft hole diameter, and the shaft hole diameter of the bearing can be minimum to 6mm.
[0036] Since the claw 2 can move radially, the three claw chuck can position the bearings with different outer diameters, since the pressing plate and the support plate can move radially, the clamping device on the three claw chuck can clamp the bearings with different diameters, and since the height of the pressing plate is adjustable, the clamping device can clamp the bearings with different thicknesses, therefore, the utility model has the advantages of wide application range.
Claims
1. A device for slotting a keyway in an inner ring of a deep groove ball bearing, characterized in that: The utility model relates to a vertical slotting machine, the worktable of the vertical slotting machine is equipped with three-jaw chuck (1), the top surface of three clamping claws (2) of three-jaw chuck (1) is equipped with clamping device respectively; The clamping device comprises a positioning plate (3) fixed with the clamping claw (2), the inner side end of the positioning plate (3) is equipped with a positioning groove (4), the side wall of the positioning groove (4) is equipped with a positioning convex (5), the upper side of the positioning plate (3) is equipped with a press plate (6) that can move radially, the press plate (6) is equipped with a pressing bolt (7) connected with the positioning plate (3).
2. The device according to claim 1, wherein: The press plate (6) is equipped with a long hole (8), the long direction of the long hole (8) is perpendicular to the axis of the three-jaw chuck (1), and the pressing bolt (7) is connected with the positioning plate (3) after penetrating through the long hole (8).
3. The device according to claim 2, wherein: The outer side end of the press plate (6) is equipped with an adjusting bolt (9) connected with the positioning plate (3).
4. The deep groove ball bearing inner ring keyway grooving apparatus of claim 1, wherein: The bottom surface of the press plate (6) is equipped with a lower pressing convex (10).
5. The deep groove ball bearing inner ring keyway grooving apparatus of claim 4, wherein: The lower pressing convex (10) is located at the inner side end of the press plate (6).
6. The device according to claim 4 or 5, wherein: The bottom surface of the positioning plate (3) is equipped with a through groove (11), the through groove is equipped with a support plate (12), the two ends of the support plate (12) are respectively located at the outer side of the two ends of the positioning plate (3), and the top surface of the support plate (12) is equipped with a support convex (13) located below the lower pressing convex (10).
7. The deep groove ball bearing inner ring keyway grooving apparatus of claim 6, wherein: The support convex (13) is located at the inner side end of the support plate (12).
8. The deep groove ball bearing inner ring keyway grooving apparatus of claim 6, wherein: The top surface of the outer side end of the support plate (12) is equipped with an anti-loosening bolt (14).