CN203265722U - Composite bearing for self-tightening drill chuck - Google Patents
Composite bearing for self-tightening drill chuck Download PDFInfo
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- CN203265722U CN203265722U CN 201320199790 CN201320199790U CN203265722U CN 203265722 U CN203265722 U CN 203265722U CN 201320199790 CN201320199790 CN 201320199790 CN 201320199790 U CN201320199790 U CN 201320199790U CN 203265722 U CN203265722 U CN 203265722U
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- axle bed
- drill chuck
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Abstract
The utility model belongs to the technical field of machines, relates to a self-tightening drill chuck, and particularly relates to a composite bearing for the self-tightening drill chuck. The technical problem that the design in the prior art is not reasonable is solved. The composite bearing comprises a cylindrical bearing seat which is fixed between the radial direction of a body and an integral type bearing guiding part, a centripetal sliding bearing is arranged on the inner side of the radial direction of the composite bearing, and a thrust rolling bearing is arranged at the lower end of the composite bearing. Compared with the prior art, the composite bearing for the self-tightening drill chuck has the advantages that the design is reasonable, the structure is simple and compact, a bearing seat is a bearing bush of the centripetal sliding bearing and also is a seat ring of the thrust rolling bearing, the composite bearing which is good in integration and strong in rigidity is formed through the threaded matching and positioning connection of the bearing seat and the integral type bearing guiding part, the body can be supported stably, connecting strength is high, loosening can not happen, and the connection among all parts is stable and reliable.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to keyless drill chuck, especially relates to a kind of composite bearing for keyless drill chuck.
Background technology
Development along with social productive forces, the use of drill chuck is very extensive, the bench drill that uses in the industries such as machine-building, electronic apparatus, construction and installation, house decoration, electric hand drill or lathe etc. mechanically all can need to carry out work with instruments such as drill chuck clamping drilling bit or cutters.Existing drill chuck has two types usually: a kind of is spanner-type drill chuck, the clamping force of this drill chuck depends on the moment that spanner applies, and need aid when clamping and loose unloading drill bit, tighten or unclamp drill chuck and come installation or removal drill bit or cutter with aid, operate cumbersomely, waste time and energy; Another kind is self-tightening drill chuck.Self-tightening drill chuck utilizes the rotation after drill bit is installed by the principle of self-tightening, automatically tightens drill bit or cutter by screw thread, is easy to when the instruments such as clamping drill bit or cutter.
Conventional keyless drill chuck generally includes main body, lock-screw, jaw, ball, end shield, jaw seat, end cap and ball lid.The ball cover cavity has a ring-shaped step, main body is a cylinder, an annular shaft shoulder is arranged on periphery, a circle ball is distributing between the ring-shaped step of the annular shaft shoulder of main body and ball lid, main body is loaded in the pilot sleeve that is stitched together by ball lid and jaw seat, and this pilot sleeve is to be stitched together by the thread connection that end shield and ball cover.Being connected axle head with external equipment in main body has an end cap, mainly plays and rotates main body and prevent that the ball lid breaks away from subjective role.
Obviously, there is obvious defective in the globality aspect of existing drill chuck, and all parts all depend on end shield and the thread connection situation that ball covers, and lose end shield, and drill chuck just falls apart into single-piece one by one.
Summary of the invention
The purpose of this utility model is for the problems referred to above, provides a kind of reasonable in design, simple and compact for structure, good integrity and can support the composite bearing that is used for keyless drill chuck of keyless drill chuck main body.
for achieving the above object, the utility model has adopted following technical proposal: this is used for the composite bearing of keyless drill chuck, keyless drill chuck comprises cylindrical main body, main body is located in tubular integrated guide bearing, the top of this integrated guide bearing is that cylindrical circular monoblock type is held the section of leading, the bottom is the jaw rail portion that is taper barrel, it is characterized in that, this composite bearing comprises cylindrical circular axle bed, this axle bed is fixed on main body radially and monoblock type is held between the section of leading, the composite bearing radially inner side is a radial plain bearing, the lower end of composite bearing is a thrust bearing.
At the above-mentioned composite bearing that is used for keyless drill chuck, described radial plain bearing comprises that described axle bed and monoblock type hold the section of leading, and described axle bed is fixed on monoblock type and holds in the section of leading; The annular shaft shoulder and described monoblock type that described thrust bearing comprises described axle bed, some balls, be arranged on main body are held the section of leading, and described ball is arranged between axle bed lower end and the annular shaft shoulder.In the utility model, monoblock type is held the significant components that the section of leading is two bearings, is again the key contact member of two bearings, and furtherly, described monoblock type is held the section of leading with the synthetic overall structure of two bearing group.
at the above-mentioned composite bearing that is used for keyless drill chuck, described monoblock type is held and is provided with ring-shaped step in the section of leading, the described annular shaft shoulder is positioned on the periphery of main body, the described annular shaft shoulder is arranged on ring-shaped step, being provided with described some balls and ball between described axle bed bottom and annular shaft shoulder top contacts with annular shaft shoulder top with the axle bed bottom respectively, described axle bed is inboard for being arranged on the trunnion of main body periphery and the bearing shell that monoblock type is held the radial plain bearing between the section of leading, described axle bed lower end is the seat ring of thrust bearing, described annular shaft shoulder top is the blowout patche of thrust bearing.
At the above-mentioned composite bearing that is used for keyless drill chuck, the upper surface of described axle bed flushes substantially with the upper surface that monoblock type is held the section of leading.
At the above-mentioned composite bearing that is used for keyless drill chuck, described monoblock type is held the section upper inner of leading and is provided with the connecting thread section, be provided with positioning step above the connecting thread section, the described axle bed outside is provided with the axle bed thread segment, be provided with the location division of radially protruding above the axle bed thread segment, described connecting thread section is threaded with the axle bed thread segment, and described location division is embedded in positioning step.
In the above-mentioned composite bearing, described positioning step and the location division tight fit that are used for keyless drill chuck.
At the above-mentioned composite bearing that is used for keyless drill chuck, described axle bed lower end has the ring-type arcuate groove, described annular shaft shoulder top has upper planar annular, described some balls are arranged between ring-type arcuate groove and upper planar annular, and some balls contact with the ring-type arcuate groove with upper planar annular respectively.
At the above-mentioned composite bearing that is used for keyless drill chuck, the upper surface of described axle bed is provided with at least two fabrication holes, and described fabrication hole is symmetrical at circumferencial direction.
The composite bearing that is used for keyless drill chuck above-mentioned is provided with annular oil storage tank between described upper planar annular and trunnion.
Compared with prior art, this advantage that is used for the composite bearing of keyless drill chuck is: reasonable in design, simple and compact for structure, axle bed is the bearing shell of radial plain bearing, is again the seat ring of thrust bearing, the screw thread tight fit that process axle bed and monoblock type are held the section of leading is located by connecting, consist of a good integrity, composite bearing that rigidity is strong, can stably support main body, and bonding strength is high, can not cause looseningly, the stable connection between each parts is reliable.
Description of drawings
Fig. 1 is that the keyless drill chuck that the utility model provides partly cuts open structural representation.
Fig. 2 be the utility model provide partly cut open structural representation.
In figure, main body 1, lock-screw 2, jaw 3, monoblock type are held the section of leading 4, jaw rail portion 5, guide groove 6, end shield 7, ring-shaped step 8, the annular shaft shoulder 9, axle bed 10, ball 11, trunnion 12, radial plain bearing 13, thrust bearing 14, connecting thread section 16, positioning step 17, axle bed thread segment 18, location division 19, ring-type arcuate groove 20, upper planar annular 21, fabrication hole 22, elastic cover 23, integrated guide bearing 24, annular oil storage tank 25.
The specific embodiment
As illustrated in fig. 1 and 2, keyless drill chuck comprises the parts such as main body 1, lock-screw 2, jaw 3, end shield 7, axle bed 10, ball 11, elastic cover 23, integrated guide bearing 24.More particularly, keyless drill chuck comprises cylindrical main body 1, and main body 1 is located in tubular integrated guide bearing 24, and the top of this integrated guide bearing 24 is that cylindrical circular monoblock type is held the section of leading 4, and the bottom is the jaw rail portion 5 that is taper barrel.That is, integrated guide bearing 24 is divided into monoblock type and holds the section of leading 4 and 5 two functions of jaw rail portion, and monoblock type holds the section of leading 4 and jaw rail portion 5 is the integral type structure.This composite bearing that is used for keyless drill chuck is the keyless drill chuck part, comprise cylindrical circular axle bed 10, this axle bed 10 is fixed on main body 1 radially and monoblock type is held between the section of leading 4, the composite bearing radially inner side is a radial plain bearing 13, and the lower end of composite bearing is a thrust bearing 14.
Radial plain bearing 13 comprises that described axle bed 10 and monoblock type hold the section of leading 4, and axle bed 10 is fixed on monoblock type and holds in the section of leading 4.The annular shaft shoulder 9 and described monoblock type that thrust bearing 14 comprises described axle bed 10, some balls 11, be arranged on main body 1 are held the section of leading 4, and ball 11 is arranged between axle bed 10 lower ends and the annular shaft shoulder 9.Particularly, monoblock type is held and is provided with ring-shaped step 8 in the section of leading 4, and the annular shaft shoulder 9 is positioned on the periphery of main body 1, and the annular shaft shoulder 9 is arranged on ring-shaped step 8.Being provided with above-mentioned some balls 11 and ball 11 between axle bed 10 bottoms and the annular shaft shoulder 9 tops contacts with the annular shaft shoulder 9 tops with axle bed 10 bottoms respectively, described axle bed 10 is inboard for being arranged on the trunnion 12 of main body 1 periphery and the bearing shell that monoblock type is held the radial plain bearing 13 between the section of leading 4, described axle bed 10 lower ends are the seat ring of thrust bearing 14, and the described annular shaft shoulder 9 tops are the blowout patche of thrust bearing 14.The upper surface of axle bed 10 flushes substantially with the upper surface that monoblock type is held the section of leading 4.Axle bed 10 lower ends have ring-type arcuate groove 20, the annular shaft shoulder 9 tops have upper planar annular 21, some balls 11 are arranged between ring-type arcuate groove 20 and upper planar annular 21, and some balls 11 contact with ring-type arcuate groove 20 with upper planar annular 21 respectively.
Monoblock type is held the section's of leading 4 upper inner and is provided with connecting thread section 16, be provided with positioning step 17 above connecting thread section 16, described axle bed 10 outsides are provided with axle bed thread segment 18, be provided with the location division 19 of radially protruding above axle bed thread segment 18, described connecting thread section 16 is threaded with axle bed thread segment 18, and described location division 19 is embedded in positioning step 17.Positioning step 17 and location division 19 tight fits.
Form, lubricate, be convenient to store dirt simultaneously for the ease of the carrying oil film, the utility model is provided with annular oil storage tank 25 between upper planar annular 21 and trunnion 12.The carrying oil film here refers to be formed on the carrying oil film of radial plain bearing 13 and thrust bearing 14.The upper surface of axle bed 10 is provided with at least two fabrication holes 22, and described fabrication hole 22 is symmetrical at circumferencial direction.Fabrication hole 22 is convenient to the installation of elastic cover 23, thereby easily keyless drill chuck is operated.
In the utility model, axle bed 10 is the bearing shell of radial plain bearing 13, it is again the seat ring of thrust bearing 14, the tight fit of holding the section of leading 4 through axle bed 10 and monoblock type is located by connecting, consist of a good integrity, composite bearing that rigidity is strong, can stably support main body 1, and bonding strength is high, can not cause looseningly, the stable connection between each parts is reliable.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used main body 1, lock-screw 2, jaw 3, monoblock type to hold the terms such as the section of leading 4, jaw rail portion 5, guide groove 6, end shield 7, ring-shaped step 8, the annular shaft shoulder 9, axle bed 10, ball 11, trunnion 12, radial plain bearing 13, thrust bearing 14, connecting thread section 16, positioning step 17, axle bed thread segment 18, location division 19, ring-type arcuate groove 20, upper planar annular 21, fabrication hole 22, elastic cover 23, integrated guide bearing 24, annular oil storage tank 25, do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (9)
1. composite bearing that is used for keyless drill chuck, keyless drill chuck comprises cylindrical main body (1), main body (1) is located in tubular integrated guide bearing (24), the top of this integrated guide bearing (24) is that cylindrical circular monoblock type is held the section of leading (4), the bottom is the jaw rail portion (5) that is taper barrel, it is characterized in that, this composite bearing comprises cylindrical circular axle bed (10), this axle bed (10) is fixed on main body (1) radially and monoblock type is held between the section of leading (4), the composite bearing radially inner side is a radial plain bearing (13), the lower end of composite bearing is a thrust bearing (14).
2. the composite bearing for keyless drill chuck according to claim 1, it is characterized in that, described radial plain bearing (13) comprises that described axle bed (10) and monoblock type hold the section of leading (4), and described axle bed (10) is fixed on monoblock type and holds in the section of leading (4); The annular shaft shoulder (9) and described monoblock type that described thrust bearing (14) comprises described axle bed (10), some balls (11), be arranged on main body (1) are held the section of leading (4), and described ball (11) is arranged between axle bed (10) lower end and the annular shaft shoulder (9).
3. the composite bearing for keyless drill chuck according to claim 2, it is characterized in that, described monoblock type is held and is provided with ring-shaped step (8) in the section of leading (4), the described annular shaft shoulder (9) is positioned on the periphery of main body (1), the described annular shaft shoulder (9) is arranged on ring-shaped step (8), being provided with above-mentioned some balls (11) and ball (11) between described axle bed (10) bottom and the annular shaft shoulder (9) top contacts with the annular shaft shoulder (9) top with axle bed (10) bottom respectively, described axle bed (10) is inboard for being arranged on the trunnion (12) of main body (1) periphery and the bearing shell that monoblock type is held the radial plain bearing (13) between the section of leading (4), described axle bed (10) lower end is the seat ring of thrust bearing (14), the described annular shaft shoulder (9) top is the blowout patche of thrust bearing (14).
4. according to claim 1 and 2 or 3 described composite bearings for keyless drill chuck, is characterized in that, the upper surface of described axle bed (10) flushes substantially with the upper surface that monoblock type is held the section of leading (4).
5. according to claim 1 and 2 or 3 described composite bearings for keyless drill chuck, it is characterized in that, described monoblock type is held the section of leading (4) upper inner and is provided with connecting thread section (16), be provided with positioning step (17) in the top of connecting thread section (16), described axle bed (10) outside is provided with axle bed thread segment (18), be provided with the location division (19) of radially protruding in the top of axle bed thread segment (18), described connecting thread section (16) is threaded with axle bed thread segment (18), and described location division (19) are embedded in positioning step (17).
6. the composite bearing for keyless drill chuck according to claim 5, is characterized in that, described positioning step (17) and location division (19) tight fit.
7. the composite bearing for keyless drill chuck according to claim 3, it is characterized in that, described axle bed (10) lower end has ring-type arcuate groove (20), the described annular shaft shoulder (9) top has upper planar annular (21), described some balls (11) are arranged between ring-type arcuate groove (20) and upper planar annular (21), and some balls (11) contact with ring-type arcuate groove (20) with upper planar annular (21) respectively.
8. the composite bearing for keyless drill chuck according to claim 7, is characterized in that, is provided with annular oil storage tank (25) between described upper planar annular (21) and trunnion (12).
9. according to claim 1 and 2 or 3 described composite bearings for keyless drill chuck, is characterized in that, the upper surface of described axle bed (10) is provided with at least two fabrication holes (22), and described fabrication hole (22) is symmetrical at circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199790 CN203265722U (en) | 2013-04-18 | 2013-04-18 | Composite bearing for self-tightening drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199790 CN203265722U (en) | 2013-04-18 | 2013-04-18 | Composite bearing for self-tightening drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203265722U true CN203265722U (en) | 2013-11-06 |
Family
ID=49496215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320199790 Withdrawn - After Issue CN203265722U (en) | 2013-04-18 | 2013-04-18 | Composite bearing for self-tightening drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203265722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212736A (en) * | 2013-04-18 | 2013-07-24 | 玉环胜友工具有限公司 | Composite bearing for self-tightening drill chuck |
| WO2014169853A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Double-main supporting type self-tightening drill chuck |
-
2013
- 2013-04-18 CN CN 201320199790 patent/CN203265722U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212736A (en) * | 2013-04-18 | 2013-07-24 | 玉环胜友工具有限公司 | Composite bearing for self-tightening drill chuck |
| WO2014169853A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Double-main supporting type self-tightening drill chuck |
| WO2014169854A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Composite bearing for self-tightening drill chuck |
| CN103212736B (en) * | 2013-04-18 | 2016-07-13 | 玉环胜友工具有限公司 | Composite bearing for keyless drill chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131106 Effective date of abandoning: 20160713 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |