CN202922219U - Machine tool center frame idler wheel - Google Patents
Machine tool center frame idler wheel Download PDFInfo
- Publication number
- CN202922219U CN202922219U CN 201220621084 CN201220621084U CN202922219U CN 202922219 U CN202922219 U CN 202922219U CN 201220621084 CN201220621084 CN 201220621084 CN 201220621084 U CN201220621084 U CN 201220621084U CN 202922219 U CN202922219 U CN 202922219U
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- ball bearing
- bearing
- machine tool
- mounting hole
- steady
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Abstract
The utility model discloses a machine tool center frame idler wheel comprising a bracket, a rotary shaft hinged on the bracket and an idler wheel, wherein the idler wheel is mounted on the rotary shaft through a ball bearing; the idler wheel comprises a rotary shaft hole and a bearing mounting hole communicated with the rotary shaft hole; the ball bearing is located in the bearing mounting hole; and an outer ring of the ball bearing is contacted with the inner surface of the bearing mounting hole. The machine tool center frame idler wheel disclosed by the utility model has the advantages of simple structure, easiness for machining and maintaining a steel plate, low cost, long service life and high working reliability.
Description
Technical field
The utility model relates to the machine tool technology field, relates in particular a kind of central frame roller of using in the time of the machine tooling bar.
Background technology
(length is no more than 3 meters to the stainless steel bar long for length, diameter 180mm-325mm) carry out drilling deep hole at deep hole drilling machine and add man-hour, the one end is withstood, the other end is clamped bar one end by machine tool three-jaw chuck, then rotation under machine tool chief axis drives, and rotating speed is 200-1000 rev/min, because bar is longer, stability when guaranteeing to process, general, centre frame is set in the middle of bar.
Granted publication number is that the Chinese utility model patent of on 08 31st, 2011 just disclose a kind of high-precision precise central frame roller for CN 201950474U, the day for announcing, and it is comprised of following element: roller shaft, roller outer shroud, the interior ring of roller, bearing roller, sealing device and support; Roller shaft is multidiameter, its left end has the roller bearing locating ring, the right side has shaft block ring to locate, in roller outer shroud, roller, ring, bearing roller thickness and diameter all increase, both sides at roller shaft are provided with sealing device, have two the contour semi-circular through hole identical with the roller shaft diameter on support, roller shaft two ends are fixed in through hole, and the lifting stake is arranged on support.The central frame roller of this utility model directly adopts special bearing roller as the supporting rollern of centre frame, has namely had the rigidity of bearing and the precision of bearing after accurate roller combination, has greatly improved the supporting precision of precision machine tool central frame roller.After this assembly combination, precision all in 0.01mm, meets the processing request of contemporary part large-scale precision part fully, and still, it also has weak point, the accuracy requirement when although it has satisfied processing,, its life-span is short, damage frequency is very fast, needs often to change, and is difficult in maintenance.
The utility model content
The purpose of this utility model is for the deficiencies in the prior art part, and a kind of steady for machine tool roller is provided, and it is simple in structure, cheap, long service life, functional reliability are high, easy to maintenance.
In order to solve the problems of the technologies described above, the technical solution of the utility model is as follows: the steady for machine tool roller, and comprise support, be hinged on rotating shaft and roller on described support, described roller is arranged in described rotating shaft by ball bearing; Described roller comprises shaft hole and the bearing mounting hole that communicates with described shaft hole, and described ball bearing is positioned at described bearing mounting hole, and the outer ring of described ball bearing and described bearing mounting hole inner surface contact.
Find after the applicant's process repetition test, research, the reason that causes central frame roller to damage is that bar has certain flexibility, be generally≤2mm/m, in addition, the circularity of bar is bad, and outer surface is smooth not, so just caused the roller damage frequency of centre frame very high, and we are by above-mentioned setting, make roller have certain centripetal adjusting and axial adjustment effect, have solved this difficult problem, its long service life, reliable operation, easy to maintenance.
As preferably, described ball bearing is the double-row self-aligning ball bearing.
Above-mentioned setting, by the centripetal regulating action of double-row self-aligning ball bearing, better to the long bar adaptability with flexibility, service life is longer.
As preferably, described rotating shaft comprises left rotary shaft, right spindle and jackshaft, described ball bearing inner race is arranged on described jackshaft, and described ball bearing inner race side and described right spindle end face contact, and described left rotary shaft end face and described ball bearing inner race side contact.
Above-mentioned setting makes the ball bearing inner race master that is fixed, and guarantees the normal operation of roller, is convenient to roller and is undertaken axially and adjustment radially by ball bearing, and to adapt to processed bar, simultaneously, it is simple in structure, be convenient to dismounting,
As preferably, the side, outer ring of described ball bearing and described bearing mounting hole bottom surface contact, and are provided with the hole back-up ring that stops described ball bearing to be deviate from the described bearing mounting hole in described bearing mounting hole.
Above-mentioned setting has guaranteed the efficient operation of whole central frame roller.
As preferably, described hole is with being provided with bearing gland between back-up ring and described ball bearing, and described bearing gland is sleeved on described left rotary shaft.
Above-mentioned setting, simple in structure, guaranteed the efficient operation of whole central frame roller.
As preferably, described bearing gland and described ball bearing contacted side are provided with an annular groove, and the diameter of described annular groove is less than the internal diameter of described ball bearing outer ring, but greater than the external diameter of described ball bearing inner race.
Above-mentioned setting, make bearing gland to the pressure-acting of ball bearing on the outer ring, rather than act on inner ring, be convenient to roller and realize axially adjusting by ball bearing.
As preferably, described bearing mounting hole bottom surface is provided with annular recess, and the diameter of described annular recess is less than the internal diameter of described ball bearing outer ring, but greater than the external diameter of described ball bearing inner race.
Above-mentioned setting, make the bearing mounting hole bottom surface to the pressure-acting of ball bearing on the outer ring, rather than act on inner ring, be convenient to roller and realize axially adjusting by ball bearing.
As preferably, described left rotary shaft is fixedly connected with by axial bolt with described right spindle.
Above-mentioned setting, installation, convenient disassembly.
As preferably, described left rotary shaft and described jackshaft are provided with axial location hole and the axial location post that cooperatively interacts.
Above-mentioned setting namely makes left rotary shaft and jackshaft be convenient to link into an integrated entity, and is more firm after also making both link into an integrated entity.
The utility model beneficial effect is:
Steady for machine tool roller of the present utility model, it is simple in structure, and handling ease, maintenance steel plate are cheap, long service life, functional reliability is high.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of the utility model one embodiment.
In figure:
The 1-support;
The 2-rotating shaft, 201-left rotary shaft, 202-right spindle, 203-jackshaft;
The 3-roller, 301-shaft hole, 302-bearing mounting hole, 303-annular recess;
The 4-ball bearing;
5-hole back-up ring;
The 6-bearing gland, the 601-annular groove;
The 7-axial bolt.
The specific embodiment
The following stated is only preferred embodiment of the present utility model, is not that scope of the present utility model is limited.
embodiment sees accompanying drawing 1, and the steady for machine tool roller comprises support 1, is hinged on rotating shaft 2 and roller 3 on described support 1, and described roller 3 is arranged in described rotating shaft 2 by ball bearing 4, general, described ball bearing 4 is the double-row self-aligning ball bearing, ball bearing 4 comprises inner ring, outer ring and steel ball etc., roller 3 is used for and processed bar contacts, positioning supports is provided, described roller 3 comprises shaft hole 301 and the bearing mounting hole 302 that communicates with described shaft hole 301, one side of shaft hole 301 and roller 3 communicates, the another side of bearing mounting hole 302 and roller 3 communicates, described ball bearing 4 is positioned at described bearing mounting hole 302, and the outer ring of described ball bearing 4 and described bearing mounting hole 302 inner surfaces contact, roller 3 is realized around rotating shaft 2 rotations by ball bearing 4, rotating shaft 2 can be adopted an integral shaft, also can adopt the axle of segmented.
in the present embodiment, described rotating shaft 2 comprises left rotary shaft 201, right spindle 202 and jackshaft 203, jackshaft 203 is between left rotary shaft 201 and right spindle 203, jackshaft 203 is arranged on right spindle 202 ends, both are one-body molded, left rotary shaft 201 is identical with right spindle 202 external diameters, jackshaft 203 external diameters are less than left rotary shaft 201, simultaneously, left rotary shaft 201 is spirally connected fixing by axial bolt 7 and jackshaft 203, for the ease of the installation of left rotary shaft 201 and jackshaft 203 and be connected firmly, described left rotary shaft 201 and described jackshaft 203 are provided with axial location hole and the axial location post that cooperatively interacts, and described ball bearing 4 inner rings are arranged on described jackshaft 203, be fixed into one with jackshaft 203, and described ball bearing 4 inner ring sides and described right spindle 202 end faces contact, carry out against, described left rotary shaft 201 end faces and described ball bearing 4 inner ring sides contact, carry out against.
the side, outer ring of described ball bearing 4 and described bearing mounting hole 302 bottom surfaces contact, be provided with hole back-up ring 5 in described bearing mounting hole 302, in use deviate from bearing mounting hole 302 to prevent ball bearing 4, be provided with bearing gland 6 between the hole is with back-up ring 5 and ball bearing 4, described bearing gland 6 is sleeved on described left rotary shaft 201, and the 1-2mm gap arranged between left rotary shaft 201, described bearing gland 6 and described ball bearing 4 contacted side are provided with an annular groove 601, the diameter of described annular groove 601 is less than the internal diameter of described ball bearing 4 outer rings, but the external diameter greater than described ball bearing 4 inner rings, like this, the side that just makes bearing gland 6 just and ball bearing 4 sides, outer ring contact, push.Simultaneously, described bearing mounting hole 302 bottom surfaces are provided with annular recess 303, and the diameter of described annular recess 303 is less than the internal diameter of described ball bearing 4 outer rings, but greater than the external diameter of described ball bearing 4 inner rings, just make bearing mounting hole 302 bottom surfaces just and ball bearing 4 sides, outer ring contact, push.
Above explanation is only to explanation of the present utility model, make the complete enforcement this programme of those of ordinary skills' energy, but be not to restriction of the present utility model, those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this specification, these are all not creative modifications.But as long as all be subject to the protection of Patent Law in claim scope of the present utility model.
Claims (9)
1. steady for machine tool roller, it is characterized in that: comprise support (1), be hinged on rotating shaft (2) and roller (3) on described support (1), described roller (3) is arranged in described rotating shaft (2) by ball bearing (4); Described roller (3) comprises shaft hole (301) and the bearing mounting hole (302) that communicates with described shaft hole (301), described ball bearing (4) is positioned at described bearing mounting hole (302), and the outer ring of described ball bearing (4) and described bearing mounting hole (302) inner surface contact.
2. steady for machine tool roller according to claim 1, it is characterized in that: described ball bearing (4) is the double-row self-aligning ball bearing.
3. steady for machine tool roller according to claim 1 and 2, it is characterized in that: described rotating shaft (2) comprises left rotary shaft (201), right spindle (202) and jackshaft (203), described ball bearing (4) inner ring is arranged on described jackshaft (203), and described ball bearing (4) inner ring side and described right spindle (202) end face contact, and described left rotary shaft (201) end face and described ball bearing (4) inner ring side contact.
4. steady for machine tool roller according to claim 3, it is characterized in that: the side, outer ring of described ball bearing (4) and described bearing mounting hole (302) bottom surface contact, and are provided with in described bearing mounting hole (302) to stop hole that described ball bearing (4) deviates from the described bearing mounting hole (302) with back-up ring (5).
5. steady for machine tool roller according to claim 4, it is characterized in that: described hole is with being provided with bearing gland (6) between back-up ring (5) and described ball bearing (4), and described bearing gland (6) is sleeved on described left rotary shaft (201).
6. steady for machine tool roller according to claim 5, it is characterized in that: described bearing gland (6) and described ball bearing (4) contacted side are provided with an annular groove (601), the diameter of described annular groove (601) is less than the internal diameter of described ball bearing (4) outer ring, but greater than the external diameter of described ball bearing (4) inner ring.
7. steady for machine tool roller according to claim 4, it is characterized in that: described bearing mounting hole (302) bottom surface is provided with annular recess (303), the diameter of described annular recess (303) is less than the internal diameter of described ball bearing (4) outer ring, but greater than the external diameter of described ball bearing (4) inner ring.
8. steady for machine tool roller according to claim 4, it is characterized in that: described left rotary shaft (201) is fixedly connected with by axial bolt (7) with described jackshaft (203).
9. steady for machine tool roller according to claim 4, it is characterized in that: described left rotary shaft (201) and described jackshaft (203) are provided with axial location hole and the axial location post that cooperatively interacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621084 CN202922219U (en) | 2012-11-22 | 2012-11-22 | Machine tool center frame idler wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621084 CN202922219U (en) | 2012-11-22 | 2012-11-22 | Machine tool center frame idler wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202922219U true CN202922219U (en) | 2013-05-08 |
Family
ID=48212212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220621084 Expired - Lifetime CN202922219U (en) | 2012-11-22 | 2012-11-22 | Machine tool center frame idler wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202922219U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461413A (en) * | 2017-09-26 | 2017-12-12 | 江苏万达特种轴承有限公司 | Totally enclosed type roller bearing component |
-
2012
- 2012-11-22 CN CN 201220621084 patent/CN202922219U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461413A (en) * | 2017-09-26 | 2017-12-12 | 江苏万达特种轴承有限公司 | Totally enclosed type roller bearing component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
|
| CX01 | Expiry of patent term |