CN103143755A - Sliding friction self-locking drill chuck - Google Patents
Sliding friction self-locking drill chuck Download PDFInfo
- Publication number
- CN103143755A CN103143755A CN2013100845126A CN201310084512A CN103143755A CN 103143755 A CN103143755 A CN 103143755A CN 2013100845126 A CN2013100845126 A CN 2013100845126A CN 201310084512 A CN201310084512 A CN 201310084512A CN 103143755 A CN103143755 A CN 103143755A
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- CN
- China
- Prior art keywords
- sliding friction
- self
- volution
- locking
- steel balls
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a sliding friction self-locking drill chuck and belongs to the technical field of tool machinery clamping. The sliding friction self-locking drill chuck cannot be loose, and is simple in technology and convenient to use. The sliding friction self-locking drill chuck adopts the technical scheme that a self-locking device is mounted between a threaded ring and a body; the self-locking device comprises a ball frame, a bearing ring, a plurality of large steel balls and a plurality of small steel balls; the ball frame is located between the bearing ring and the threaded ring; the large steel balls and the small steel balls are mounted on the ball frame; the large steel balls are uniformly distributed on the ball frame; the sliding friction self-locking drill chuck is used for clamping a tool; the large-diameter steel balls uniformly distributed on the ball frame overcome a yield limit of a contact part of the threaded ring at the moment a clamping force tends to be maximum; plastic deformation marks are formed at corresponding positions of the threaded ring; the large-diameter steel balls are prevented from keeping on rolling; and the drill chuck is in a sliding friction self-locking clamping state.
Description
Technical field
Sliding friction self-locking clamping chuck of drill bit of the present invention belongs to tool mechanical tensioning technique field.
Background technology
Existing drill chuck rotates in use front cap and drives volution, makes intrinsic three jaw opening and closing by thread connection, reaches the purpose of clamping or loosening cutter.The defective of described drill chuck is: in use cutter is easily loosening.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved is to provide a kind of sliding friction self-locking clamping chuck of drill bit that can not become flexible, and technique is simple, and is easy to use.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: the sliding friction self-locking clamping chuck of drill bit, comprise jaw, door, front cap, volution, body and rear cap, three jaws are arranged on respectively in three decile inclined holes of body, being set with successively volution, front cap and door and volution, front cap, door and body in the respective grooves of body bottom is that interference fit is installed, screw thread on volution and jaw forms the screw thread transmission, the top of body is equipped with rear cap, between described volution and body, self-locking device is installed;
The structure of described self-locking device is: comprise pearl frame, bearer ring, large steel ball and little steel ball, the pearl chord position is equipped with a plurality of large steel balls and a plurality of little steel ball on the pearl frame between bearer ring and volution.
Described large steel ball is distributed on the pearl frame.
The present invention compares with prior art the beneficial effect that has: be distributed on the major diameter steel ball on the pearl frame, be tending towards peaked moment in clamping force, overcome the yield limit of volution contact site, the volution relevant position forms the plastic deformation vestige and stops the continuation of major diameter steel ball to be rolled, and this moment, drill chuck was in sliding friction self-locking clamped condition.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of self-locking device in the present invention.
In figure: 1 is jaw, and 2 is door, and 3 is front cap, and 4 is volution, and 5 is body, and 6 is rear cap, and 7 is the pearl frame, and 8 is bearer ring.
The specific embodiment
As shown in Figure 1 and Figure 2, sliding friction self-locking clamping chuck of drill bit of the present invention, comprise jaw 1, door 2, front cap 3, volution 4, body 5 and rear cap 6, three jaws 1 are arranged on respectively in three decile inclined holes of body 5, being set with successively volution 4, front cap 3 and door 2 and volution 4, front cap 3, door 2 and body 5 in the respective grooves of body 5 bottoms installs for interference fit, screw thread on volution 4 and jaw 1 forms the screw thread transmission, the top of body 5 is equipped with rear cap 6, between described volution 4 and body 5, self-locking device is installed;
The structure of described self-locking device is: comprise pearl frame 7, bearer ring 8, large steel ball and little steel ball, pearl frame 7 is equipped with a plurality of large steel balls and a plurality of little steel ball on pearl frame 7 between bearer ring 8 and volution 4.
Described large steel ball is distributed on pearl frame 7.
Axis carrier ring 8 of the present invention is different from the making material of volution 4, and after heat treatment, the relative hardness value of volution 4 is low.
Volution 4 surface extrudes the edge flow harden of vestiges, and relative intensity improves, then the possibility that extrudes vestige reduces.Repeatedly the cutter of different-diameter clamps, on volution 4 corresponding sports tracks self-assembling formation be beneficial to self-locking, several disjunct plastic deformation vestiges.
Its operation principle is: drive volution 4 before rotation when cap 3, make three jaw 1 opening and closing in body 5 by thread connection, reach and clamp or the purpose of loosening cutter.
During clamping because volution 4 relative hardness values are low, make the large steel ball that is distributed on pearl frame 7 be tending towards peaked moment in clamping force, overcome the yield limit of large steel ball and volution 4 contacts site, volution 4 relevant positions form the plastic deformation vestige and stop the continuation of large steel ball to be rolled, become relative sliding by rolling between bearer ring 8 and large steel ball this moment, make little steel ball stressed gradually, until the clamping force maximum, this moment, drill chuck was in sliding friction self-locking clamped condition.
Unclamp the force of sliding friction that initial instant must first overcome large steel ball and bearer ring 8, the size of Input Forces when being equivalent to clamp could be removed self-locking state, continues the front cap 3 of reverse rotation and gets final product loosening cutter.
Claims (2)
1. sliding friction self-locking clamping chuck of drill bit, comprise jaw (1), door (2), front cap (3), volution (4), body (5) and rear cap (6), three jaws (1) are arranged on respectively in three decile inclined holes of body (5), be set with successively volution (4) in the respective grooves of body (5) bottom, front cap (3) and door (2) and volution (4), front cap (3), door (2) and body (5) are installed for interference fit, screw thread on volution (4) and jaw (1) forms the screw thread transmission, the top of body (5) is equipped with rear cap (6), it is characterized in that: between described volution (4) and body (5), self-locking device is installed,
The structure of described self-locking device is: comprise pearl frame (7), bearer ring (8), large steel ball and little steel ball, pearl frame (7) is positioned between bearer ring (8) and volution (4), and a plurality of large steel balls and a plurality of little steel ball are installed on pearl frame (7).
2. sliding friction self-locking clamping chuck of drill bit according to claim 1, it is characterized in that: described large steel ball is distributed on pearl frame (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100845126A CN103143755A (en) | 2013-03-18 | 2013-03-18 | Sliding friction self-locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100845126A CN103143755A (en) | 2013-03-18 | 2013-03-18 | Sliding friction self-locking drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103143755A true CN103143755A (en) | 2013-06-12 |
Family
ID=48542225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100845126A Pending CN103143755A (en) | 2013-03-18 | 2013-03-18 | Sliding friction self-locking drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103143755A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148712A (en) * | 2014-08-19 | 2014-11-19 | 山东威达机械股份有限公司 | Impact-resistant locking type spanner drill chuck |
| CN104942323A (en) * | 2015-07-15 | 2015-09-30 | 山东威达机械股份有限公司 | Noiseless self-locking drill chuck |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373202A (en) * | 2001-02-10 | 2002-09-18 | Roehm Gmbh | Drill chuck |
| CN2516299Y (en) * | 2002-01-30 | 2002-10-16 | 周文华 | Clamping head of closefisted drill |
| CN2680390Y (en) * | 2004-02-05 | 2005-02-23 | 山西惠丰机械有限公司 | Hand tightened self-locking drill chuck |
| CN2701558Y (en) * | 2004-04-29 | 2005-05-25 | 三鸥集团有限公司 | Improved hand tighten drill chuck |
| US20050121861A1 (en) * | 2003-12-04 | 2005-06-09 | David Harris | Chuck |
| CN2726771Y (en) * | 2004-06-15 | 2005-09-21 | 山西惠丰机械有限公司 | Fixation fastening chuck |
| WO2008009170A1 (en) * | 2006-07-11 | 2008-01-24 | Zhenqian Hu | Hand fastening drill chuck and bearing collar self-locking mechanism for the same |
| CN203184721U (en) * | 2013-03-18 | 2013-09-11 | 山西惠丰机械工业有限公司 | Sliding friction self-locking drill chuck |
-
2013
- 2013-03-18 CN CN2013100845126A patent/CN103143755A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2373202A (en) * | 2001-02-10 | 2002-09-18 | Roehm Gmbh | Drill chuck |
| CN2516299Y (en) * | 2002-01-30 | 2002-10-16 | 周文华 | Clamping head of closefisted drill |
| US20050121861A1 (en) * | 2003-12-04 | 2005-06-09 | David Harris | Chuck |
| CN2680390Y (en) * | 2004-02-05 | 2005-02-23 | 山西惠丰机械有限公司 | Hand tightened self-locking drill chuck |
| CN2701558Y (en) * | 2004-04-29 | 2005-05-25 | 三鸥集团有限公司 | Improved hand tighten drill chuck |
| CN2726771Y (en) * | 2004-06-15 | 2005-09-21 | 山西惠丰机械有限公司 | Fixation fastening chuck |
| WO2008009170A1 (en) * | 2006-07-11 | 2008-01-24 | Zhenqian Hu | Hand fastening drill chuck and bearing collar self-locking mechanism for the same |
| CN203184721U (en) * | 2013-03-18 | 2013-09-11 | 山西惠丰机械工业有限公司 | Sliding friction self-locking drill chuck |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104148712A (en) * | 2014-08-19 | 2014-11-19 | 山东威达机械股份有限公司 | Impact-resistant locking type spanner drill chuck |
| CN104942323A (en) * | 2015-07-15 | 2015-09-30 | 山东威达机械股份有限公司 | Noiseless self-locking drill chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20160914 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |