CN212977911U - Positioning mandrel adjusting device for track traffic bearing ring superfinishing - Google Patents
Positioning mandrel adjusting device for track traffic bearing ring superfinishing Download PDFInfo
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- CN212977911U CN212977911U CN202021323156.0U CN202021323156U CN212977911U CN 212977911 U CN212977911 U CN 212977911U CN 202021323156 U CN202021323156 U CN 202021323156U CN 212977911 U CN212977911 U CN 212977911U
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- superfinishing
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- 210000004907 gland Anatomy 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 241000251468 Actinopterygii Species 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 20
- 238000000227 grinding Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
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Abstract
A positioning mandrel adjusting device for track traffic bearing ring superfinishing comprises a positioning mandrel, a superfinishing mandrel, a bearing, a gland, a check ring and a special bolt; the centers of the upper end surface and the lower end surface of the positioning mandrel are provided with annular bosses for mounting bearings, and the center of the positioning mandrel is provided with a through hole concentric with the annular bosses; the super-precision core shaft is a step shaft with a through hole in the axis, and the large end of the step shaft is provided with two sections of circular shafts which are matched and connected with the bearing; the bearing is arranged in the annular boss and is in interference fit with the annular boss; the gland is arranged on the upper end face of the positioning mandrel. This adjusting device simple structure lightly easily changes, improves original location dabber structure, makes it and becomes the rolling cooperation with the sliding fit between the super smart dabber, has avoided producing friction, fish tail between the two, has also guaranteed the positioning accuracy of bearing ring simultaneously, has reduced the wear between bearing ring and the location dabber, has prolonged the life of location dabber, has reduced the cost of enterprises.
Description
Technical Field
The utility model belongs to the technical field of the bearing processing is made, concretely relates to railway vehicle axle box bearing ring super finishing positioning core axle adjusting device.
Background
The precision of a railway bearing is necessary to guarantee the driving safety, the appearance and the dimensional precision of a bearing ring need to be finished through ultra-precision grinding, at present, an original ultra-precision mandrel and a positioning mandrel are matched when a bearing ring of a railway vehicle axle box is subjected to the ultra-precision grinding, the original ultra-precision mandrel and the positioning mandrel are connected into a whole and positioned in the bearing ring, a disc driving device drives the bearing ring to rotate when the ultra-precision grinding is carried out, the inner diameter of the bearing ring rubs against the positioning excircle of the positioning mandrel during the rotation process so as to cause the positioning mandrel to rotate together, the ultra-precision mandrel is fixed on a positioning frame of the ultra-precision machining device so as to generate friction between the positioning mandrel and the ultra-precision mandrel, when the abrasion is serious, the scratch or the collision injury is generated between the positioning mandrel and the ultra-precision mandrel, the concentricity of the positioning mandrel and the bearing ring is reduced, the positioning mandrel needs to be replaced in time, the ultra-precision mandrel needs to be replaced along with replacement of the positioning mandrel, so that the service life of the ultra-precision mandrel is shortened, the machining efficiency is reduced accordingly, and the production cost of enterprises is increased.
Disclosure of Invention
The utility model aims at providing a positioning core axle adjusting device during track traffic bearing ring superfinishing, the device sets up the bearing constant head tank at original positioning core axle both ends, make positioning core axle and super smart dabber roll fit through installing two bearings, the friction has been avoided producing between the two, the position of adjusting super smart dabber simultaneously guarantees that positioning core axle and bearing ring are concentric, reduce fish tail and the wearing and tearing to the positioning core axle locating surface man-hour, the quality stability of bearing ring superfinishing has been improved, the life of positioning core axle has been increased.
The purpose of the utility model can be realized by adopting the following technical scheme: a positioning mandrel adjusting device for track traffic bearing ring superfinishing comprises a positioning mandrel, a superfinishing mandrel, a bearing, a gland, a check ring and a special bolt; the positioning core shaft is of a disc-shaped structure, the centers of the upper end surface and the lower end surface of the positioning core shaft are provided with annular bosses, the center of the positioning core shaft is provided with a through hole concentric with the annular bosses, the upper end surface and the lower end surface of the positioning core shaft are symmetrically provided with annular grooves, and oil film through holes are uniformly distributed in the annular grooves; the super-precision core shaft is a step shaft with a through hole in the axis, four open slots are uniformly distributed in the periphery of a circular table at the end part of the step shaft, two sections of circular shafts in matched connection with bearings are arranged below the circular table, the end is sleeved in a center hole of the positioning core shaft, and a section of threaded hole matched with a special bolt is arranged at the bottom of the through hole of the step shaft; the bearing is arranged in the annular bosses at the upper end and the lower end of the positioning mandrel and is connected with the annular bosses in an interference fit manner; the gland is arranged on the upper end surface of the positioning mandrel and is connected with the positioning mandrel through a bolt; the retainer ring is arranged on the end surface of the bearing inner ring at the bottom of the positioning mandrel; the special bolt penetrates through the retainer ring to connect the positioning mandrel and the superfinishing mandrel together.
The positioning core shaft is characterized in that oil film through holes penetrating through the circular groove and oil through holes directly communicated to a central through hole of the positioning core shaft are uniformly distributed on the excircle of the positioning core shaft, the inner diameter of annular bosses at the upper end and the lower end of the positioning core shaft are matched with the outer diameter of a bearing outer ring, and countersunk bolt holes connected with a gland are formed in the upper end face of the positioning core shaft.
The outer diameter of two sections of circular shafts of the superfinishing mandrel is matched with the inner diameter of the bearing inner ring, the distance between the two sections of circular shafts corresponds to the distance between the annular bosses of the bearings arranged at the two ends of the positioning mandrel, the outer diameters of the shafts between the two sections of circular shafts are symmetrically provided with milling planes, the symmetrical planes are provided with communicated oil penetration holes, and a kidney-shaped groove connected with a superfinishing mandrel positioning frame of the superfinishing equipment is arranged between the upper end of the superfinishing mandrel and the step shaft.
The oil through hole on the positioning mandrel corresponds to the oil seepage hole on the superfinishing mandrel.
The bearing is a 68062 type deep groove ball bearing, the inner diameter is 30mm, the outer diameter is 42mm, and the thickness is 7 mm.
The gland is of a disc-shaped ring structure, the inner diameter of the ring is matched with the outer diameter of the annular boss at the upper end of the positioning mandrel, the outer diameter of the gland is consistent with that of the positioning mandrel, and the gland is provided with an opening through hole connected with the positioning mandrel.
The retainer ring is of a stepped structure, the outer diameter of the stepped small end is matched with the inner diameter of the bearing inner ring, and the outer diameter of the stepped large end is smaller than that of the bearing inner ring.
The thread size of the special bolt is matched with the size of a threaded hole at the bottom of the through hole of the super-precision mandrel.
When the utility model is used, the super-precision mandrel is matched and connected with the super-precision mandrel positioning frame through a waist-shaped key, the super-precision mandrel is fixed on the super-precision mandrel positioning frame through a bolt, one end of a step shaft of the super-precision mandrel extends into a through hole of the positioning mandrel and is matched and connected with bearings at the upper end and the lower end of the positioning mandrel, a check ring is arranged at the bottom of the positioning mandrel and is screwed through the bolt, super-precision equipment is started, the super-precision mandrel positioning frame is lifted to drive the super-precision mandrel to enable the positioning mandrel to fall into a bearing ring on a driving disc, the position of the super-precision mandrel on the super-precision mandrel positioning frame is adjusted to enable the bearing ring to be tightly attached on the positioning mandrel, the bearing ring and the positioning mandrel are ensured to be concentric, the bearing ring is driven to rotate when the driving disc rotates, the positioning mandrel rotates along with the positioning mandrel, a layer of oil film is formed on the matching, the inner diameter of the bearing ring is not scratched, and the inner diameter of the positioning mandrel and the outer diameter of the super-precision mandrel are protected by the improvement of the positioning mandrel structure.
The utility model has the advantages that: this adjusting device simple structure is light easily to be changed, improve original location dabber structure, make sliding fit between location dabber and the super smart dabber become the rolling fit because of having increased 68062 type bearing, the fitting surface contactless of location dabber and super smart dabber, the friction has been avoided producing between the two, the fish tail, there is good guard action to the location dabber internal diameter, bearing ring's positioning accuracy has also been guaranteed simultaneously, the friction between bearing ring and the location dabber has been reduced, bearing ring precision and quality's stability have been improved, then the life of location dabber has been prolonged, the cost of enterprise has been reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the positioning mandrel of the present invention;
fig. 3 is a top view of the positioning mandrel of the present invention;
fig. 4 is a schematic view of the superfinishing mandrel of the present invention;
fig. 5 is a cross-sectional view of the super-precision mandrel of the present invention;
FIG. 6 is a top view of FIG. 4;
fig. 7 is a schematic view of the gland of the present invention;
fig. 8 is a sectional view of the retainer ring of the present invention;
the labels in the figure are: 1. the positioning device comprises a positioning mandrel, 2, an ultra-precision mandrel, 3, a bearing, 4, a gland, 5, a retainer ring, 6, a special bolt, 7, an ultra-precision mandrel positioning frame, 8, a driving disc, 9, a bearing ring, 10, a circular groove, 11, an oil film through hole, 12, an oil through hole, 13, a countersunk bolt hole, 14, an oil seepage hole, 15, an opening through hole, 16 and an opening groove.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, and fig. 8, a positioning mandrel adjusting device for track traffic bearing ring superfinishing comprises a positioning mandrel 1, a superfinishing mandrel 2, a bearing 3, a gland 4, a retainer ring 5, and a special bolt 6, wherein the positioning mandrel 1 is a disc-shaped structure with annular bosses arranged at the centers of the upper and lower end surfaces, a through hole concentric with the annular bosses is arranged at the center of the positioning mandrel 1, the inner diameter of the annular bosses is matched with the outer diameter of the outer ring of the bearing 3, annular grooves 10 are symmetrically arranged at the upper and lower end surfaces of the positioning mandrel 1, oil film through holes 11 are uniformly distributed in the annular grooves 10, oil through holes 12 penetrating through the oil film through holes 11 and directly reaching the through hole at the center of the positioning mandrel 1 are uniformly distributed on the outer ring of the positioning mandrel 1, the oil holes 12 are arranged to, the friction is reduced, and the upper end face of the positioning core shaft 1 is provided with a countersunk bolt hole 13 connected with the gland 4. The superfinishing mandrel 2 is a step shaft with a through hole in the axis, four open grooves 16 are uniformly distributed on the periphery of a circular table at the end part of the step shaft, the circular table at the end part is used for positioning the position where the superfinishing mandrel 2 is sleeved on the positioning mandrel 1, and the four open grooves 16 are convenient for the loading and unloading of the superfinishing mandrel 2; two sections of circular shafts which are matched and connected with the bearing 3 are arranged below the circular truncated cone, the outer diameter of each circular shaft is matched with the inner diameter of the inner ring of the bearing 3, the distance between the two sections of circular shafts corresponds to the distance between the annular bosses which are arranged at the two ends of the positioning mandrel 1 and are provided with the bearing 3, the ends of the circular shafts are sleeved in the center hole of the positioning mandrel 1, planes are symmetrically arranged on the outer diameter of the shaft between the two sections of circular shafts, communicated oil seepage holes 14 are drilled on the symmetrical planes, the oil seepage holes 14 correspond to the oil through holes 12 on the positioning mandrel 1, so that lubricating oil can conveniently flow, a better lubricating effect is achieved, a section of threaded hole which is matched with the special bolt 6 is arranged at the bottom of the through hole of the stepped shaft, and a kidney-shaped groove which is connected with the super-finishing mandrel positioning frame 7 of. Bearing 3 set up in the annular boss at the upper and lower both ends of positioning core axle 1, bearing 3 and annular boss interference fit, bearing 3 is the deep groove ball bearing of 68062 type, the internal diameter is 30mm, the external diameter is 42mm, thickness is 7mm, this bearing has better hardness, the wearability is stronger, has higher dimensional stability, the protection positioning core axle is not by the fish tail. Gland 4 be the disk ring structure, the external diameter size phase-match of ring internal diameter size and the annular boss of positioning core axle 1 upper end, the external diameter size of gland 4 is unanimous with the external diameter size of positioning core axle 1, gland 4 suit is in the up end of positioning core axle 1, is provided with the open-ended through-hole 15 of being connected with positioning core axle 1 on it, gland 4 passes through the bolt and is connected with positioning core axle 1, gland 4 is used for sheltering from the splash of lubricating oil when positioning core axle 1 rotates. Retaining ring 5 be the stairstepping structure, the internal diameter size phase-match of the tip external diameter size of stairstepping and 3 inner rings of bearing, the major-end external diameter size of stairstepping is less than the external diameter size of 3 inner rings of bearing, retaining ring 5 sets up on the inner ring terminal surface of 3 bearings of positioning core axle 1 bottom, special bolt 6 passes retaining ring 5 and links together positioning core axle 1 and super fine dabber 2.
The specific use process of the adjusting device is as follows: when the bearing ring 9 is superfinished, firstly, the superfinishing mandrel 2 is connected with a superfinishing mandrel positioning frame 7 in a matching way through a kidney-shaped key, and is fixed on the superfinishing mandrel positioning frame 7 through a bolt, one end of a step shaft of the superfinishing mandrel 2 extends into a through hole of the positioning mandrel 1 to be connected with bearings 3 at the upper end and the lower end of the positioning mandrel 1 in a matching way, a check ring 5 is arranged at the bottom of the positioning mandrel 1 and is fixedly screwed through a special bolt 6, an oil penetration hole 14 of the superfinishing mandrel 2 corresponds to an oil penetration hole 12 on the positioning mandrel 1, the superfinishing equipment is started, the superfinishing mandrel positioning frame is lifted 7 to drive the superfinishing mandrel 2 to enable the positioning mandrel 1 to fall into the bearing ring 9 on a driving disc 8, the position of the superfinishing mandrel 2 on the superfinishing mandrel positioning frame 7 is adjusted, so that the bearing ring 9 is tightly attached to the, the drive disc 8 drives the bearing ring 9 to rotate when rotating, the positioning mandrel 1 rotates along with the rotation, simultaneously, a layer of oil film is formed on the matching surface of the positioning mandrel 1 and the bearing ring 9, the friction between the matching surfaces of the bearing ring 9 and the positioning mandrel 1 is reduced, the inner diameter of the bearing ring 9 is guaranteed not to be scratched, meanwhile, lubricating oil enters between the matching surfaces of the positioning mandrel 1 and the super-precision mandrel 2, the matching surfaces are not in direct contact, the friction between the matching surfaces is avoided, the loss of the positioning mandrel 1 is reduced, the service life of the positioning mandrel 1 is prolonged, the improvement of the structure of the positioning mandrel 1 protects the inner diameter of the positioning mandrel 1 and the outer diameter of the super-precision mandrel 2, only the positioning mandrel 1 is replaced when the abrasion is replaced, and the service life of the super-precision mandrel 2.
The utility model discloses the part of not detailing is prior art, and this utility model has used at this enterprise, and is respond well, and the suggestion is promoted.
Claims (8)
1. The utility model provides a positioning mandrel adjusting device during track traffic bearing ring superfinishing, includes positioning mandrel (1), super smart dabber (2), bearing (3), gland (4), retaining ring (5) and special bolt (6), characterized by: the positioning core shaft (1) is of a disc-shaped structure with annular bosses arranged at the centers of the upper end surface and the lower end surface, a through hole concentric with the annular bosses is arranged at the center of the positioning core shaft (1), annular grooves (10) are symmetrically arranged on the upper end surface and the lower end surface of the positioning core shaft (1), and oil film through holes (11) are uniformly distributed in the annular grooves (10); the superfinishing mandrel (2) is a step shaft with a through hole in the axis, four open grooves (16) are uniformly distributed in the periphery of a circular truncated cone at the end part of the step shaft, two sections of circular shafts matched and connected with the bearing (3) are arranged below the circular truncated cone, the circular shaft is sleeved in a central hole of the positioning mandrel (1), and a section of threaded hole matched with the special bolt (6) is formed in the bottom of the through hole of the step shaft; the bearing (3) is arranged in the annular bosses at the upper end and the lower end of the positioning mandrel (1), and the bearing (3) is connected with the annular bosses in an interference fit manner; the gland (4) is arranged on the upper end surface of the positioning mandrel (1) and is connected with the positioning mandrel (1) through a bolt; the retainer ring (5) is arranged on the end surface of the inner ring of the bearing (3) at the bottom of the positioning mandrel (1); the special bolt (6) penetrates through the retainer ring (5) to connect the positioning mandrel (1) and the superfinishing mandrel (2) together.
2. The adjusting device for the positioning mandrel during the superfinishing of the bearing ring of the rail transit bearing according to claim 1, wherein: the positioning core shaft is characterized in that oil film through holes (11) penetrating through the annular groove (10) and oil through holes (12) directly penetrating to a central through hole of the positioning core shaft (1) are uniformly distributed on the outer circle of the positioning core shaft (1), the inner diameter sizes of annular bosses at the upper end and the lower end of the positioning core shaft (1) are matched with the outer diameter size of the outer ring of the bearing (3), and countersunk bolt holes (13) connected with the gland (4) are formed in the upper end face of the positioning core shaft (1).
3. The adjusting device for the positioning mandrel during the superfinishing of the bearing ring of the rail transit bearing according to claim 1, wherein: the outer diameter of two sections of circular shafts of the superfinishing mandrel (2) is matched with the inner diameter of an inner ring of the bearing (3), the distance between the two sections of circular shafts corresponds to the distance between annular bosses of the bearings (3) arranged at two ends of the positioning mandrel (1), planes are symmetrically arranged on the outer diameter of the shaft between the two sections of circular shafts, communicated oil seepage holes (14) are formed in the symmetrical planes, and a kidney-shaped groove connected with a superfinishing mandrel positioning frame (7) of the superfinishing equipment is arranged between the upper end of the superfinishing mandrel (2) and a step shaft.
4. The adjusting device for the positioning mandrel during the superfinishing of the bearing ring of the rail transit bearing according to claim 1, wherein: the oil through hole (12) on the positioning mandrel (1) corresponds to the oil seepage hole (14) on the superfinishing mandrel (2).
5. The adjusting device for the positioning mandrel during the superfinishing of the bearing ring of the rail transit bearing according to claim 1, wherein: the bearing (3) is a 68062 type deep groove ball bearing, the inner diameter is 30mm, the outer diameter is 42mm, and the thickness is 7 mm.
6. The adjusting device for the positioning mandrel during the superfinishing of the bearing ring of the rail transit bearing according to claim 1, wherein: gland (4) be disk ring structure, the external diameter size phase-match of ring internal diameter size and the annular boss of positioning core axle (1) upper end, the external diameter size of gland (4) is unanimous with the external diameter size of positioning core axle (1), be provided with opening through-hole (15) of being connected with positioning core axle (1) on gland (4).
7. The adjusting device for the positioning mandrel during the superfinishing of the bearing ring of the rail transit bearing according to claim 1, wherein: the retainer ring (5) is of a stepped structure, the outer diameter of the stepped small end is matched with the inner diameter of the inner ring of the bearing (3), and the outer diameter of the stepped large end is smaller than the outer diameter of the inner ring of the bearing (3).
8. The adjusting device for the positioning mandrel during the superfinishing of the bearing ring of the rail transit bearing according to claim 1, wherein: the thread size of the special bolt (6) is matched with the thread hole size at the bottom of the through hole of the super-precision mandrel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323156.0U CN212977911U (en) | 2020-07-08 | 2020-07-08 | Positioning mandrel adjusting device for track traffic bearing ring superfinishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021323156.0U CN212977911U (en) | 2020-07-08 | 2020-07-08 | Positioning mandrel adjusting device for track traffic bearing ring superfinishing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212977911U true CN212977911U (en) | 2021-04-16 |
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ID=75427325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021323156.0U Active CN212977911U (en) | 2020-07-08 | 2020-07-08 | Positioning mandrel adjusting device for track traffic bearing ring superfinishing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212977911U (en) |
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2020
- 2020-07-08 CN CN202021323156.0U patent/CN212977911U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Patentee after: Luoyang Bearing Group Railway Bearing Co.,Ltd. Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China Patentee before: Luoyang Bearing Group Railway Bearing Co.,Ltd. |
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| CP03 | Change of name, title or address |