CN103212740A - Shaft base of self-clinching drill chuck - Google Patents
Shaft base of self-clinching drill chuck Download PDFInfo
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- CN103212740A CN103212740A CN2013101362490A CN201310136249A CN103212740A CN 103212740 A CN103212740 A CN 103212740A CN 2013101362490 A CN2013101362490 A CN 2013101362490A CN 201310136249 A CN201310136249 A CN 201310136249A CN 103212740 A CN103212740 A CN 103212740A
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- drill chuck
- axle bed
- pedestal
- self
- shaft base
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Abstract
The invention belongs to the machinery technical field, and relates to a self-clinching drill chuck, in particular to a shaft base of the self-clinching drill chuck. The shaft base solves the problem that design is not reasonable in the prior art. The shaft base is composed of a base body and an inner hole, wherein the inner hole is an axial through hole and the base body is cylindrical. The shaft base is characterized in that the outer side of the base body is provided with a shaft base thread section, a locating part is arranged above the shaft base thread shaft, and the outer diameter of the locating part is larger than that of the shaft base thread section. The shaft base of the self-clinching drill chuck has the advantages of being reasonable in design and simple and compact in structure, being an important multifunctional bearing part, ensuring that the self-clinching drill chuck is easy to disassemble and assemble and high in connecting strength after assembly due to the fact that thread connection and tight match and locating of the locating part are combined, effectively optimizing the structure of the self-clinching drill chuck, and improving structure strength, work stability and work precision of the self-clinching drill chuck.
Description
Technical field
The invention belongs to field of mechanical technique, relate to keyless drill chuck, especially relate to a kind of keyless drill chuck axle bed.
Background technology
Along with development of social productivity, the use of drill chuck is very extensive, employed bench drill, 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 in industries such as machine-building, electronic apparatus, construction and installation, house decoration.Existing drill chuck has two types usually: a kind of is the Wrench-type drill chuck, the clamping force of this drill chuck depends on the moment that spanner applies, and clamping and pine needs aid when unloading drill bit, the use aid tightens or unclamps drill chuck and come installation or removal drill bit or cutter, operate cumbersomely, waste time and energy; Another kind is a self-tightening drill chuck.Self-tightening drill chuck utilizes the rotation after drill bit is installed by the principle of self-tightening, tightens drill bit or cutter by screw thread automatically, is easy to when 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 the 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.
Obviously, the prior art design is reasonable inadequately, be difficult to form the main spindle box that main body is carried out stable support, and complex structure, after finishing, assembling is easy to occur becoming flexible, have a strong impact on the keyless drill chuck operate as normal.
Summary of the invention
The objective of the invention is at the problems referred to above, provide a kind of reasonable in design, simple and compact for structure, have location structure and possess multi-purpose keyless drill chuck axle bed.
For achieving the above object, the present invention has adopted following technical proposal: this keyless drill chuck axle bed, be arranged between main body and the integral type guidance seat, comprise pedestal and endoporus, endoporus and pedestal that this axle bed has axial perforation are cylindric, it is characterized in that, the described pedestal outside is provided with the axle bed thread segment, be provided with the location division above the axle bed thread segment, the external diameter of described location division is greater than the external diameter of axle bed thread segment.
Keyless drill chuck of the present invention is different with conventional keyless drill chuck, comprises parts such as main body, lock-screw, integral type guidance seat, axle bed, jaw, plurality of balls, end shield, elastic cover.It is cylindric that main body is, in the main body lower end by the lock-screw that has been threaded, be equipped with in the lock-screw lower end with respect to lock-screw axially, circumferentially location and three jaws movably radially.Main body is located in the tubular integral type guidance seat, and the top of this integral type guidance seat is that cylindrical circular monoblock type is held the portion of leading, and the bottom is the jaw rail portion that is taper barrel.Be that integral type guidance seat can be divided into two parts according to function, the one, jaw rail portion, i.e. integral type guidance seat bottom; The one, monoblock type is held the portion of leading, i.e. integral type guidance seat top; And jaw rail portion and monoblock type are held the portion of leading and are connected as a single entity.Have some guide grooves in the jaw rail portion, jaw is arranged in the guide groove with corresponding one by one setting of guide groove and jaw.Be provided with the connecting thread section in monoblock type is held the portion of leading, this connecting thread section is threaded with the axle bed thread segment.Be provided with positioning step above the connecting thread section, this positioning step and location division tight fit are promptly on the forced positioning step that is positioned at integral type guidance seat in location division.The rigidity location of axle bed in keyless drill chuck realized in the location division.Guarantee that with tight fit axle bed becomes as a whole with integral type guidance seat by being threaded.
In above-mentioned keyless drill chuck axle bed, the lower surface of described pedestal has the ring-type arcuate groove.The ring-type arcuate groove is mainly used in the motion guide to the keyless drill chuck ball.
In above-mentioned keyless drill chuck axle bed, described pedestal lower axial end forms the seat ring of thrust bearing.That is, pedestal lower axial end and ball and the annular shaft shoulder form thrust bearing.
In above-mentioned keyless drill chuck axle bed, described pedestal radially inner side forms the bearing shell of radial plain bearing.More particularly, the trunnion of main body top periphery contacts with the pedestal radially inner side.The pedestal radially inner side constitutes radial plain bearing.
In above-mentioned keyless drill chuck axle bed, the upper surface of described pedestal is provided with at least two fabrication holes, and described fabrication hole distributes symmetrically and evenly at circumferencial direction.After pedestal was installed in keyless drill chuck, the pedestal upper surface flushed with the upper surface of monoblock type guidance portion substantially.
Compared with prior art, described axle bed is the strength member that this keyless drill chuck increases newly, the advantage of this keyless drill chuck axle bed is: reasonable in design, simple and compact for structure, be one and have multi-purpose important bearing parts concurrently, adding is threaded combines with location division tight fit location, guarantee that this keyless drill chuck is easy to dismounting and assembling back bonding strength height, can effectively optimize the structure of keyless drill chuck, improve structural strength, job stability and the operating accuracy of keyless drill chuck.
Description of drawings
Fig. 1 is that axle bed provided by the invention partly cuts open structural representation when being installed in keyless drill chuck.
Fig. 2 is that axle bed provided by the invention partly cuts open structural representation.
Fig. 3 is an axle bed plan structure schematic diagram provided by the invention.
Fig. 4 is that axle bed provided by the invention is looked up structural representation.
Among the figure, main body 1, the annular shaft shoulder 11, trunnion 12, integral type guidance seat 2, monoblock type guidance portion 21, connecting thread section 21a, positioning step 21b, jaw rail portion 22, ring-shaped step 23, pedestal 3, axle bed thread segment 31, location division 32, ring-type arcuate groove 33, fabrication hole 34, endoporus 35, lock-screw 4, jaw 5, ball 6, end shield 7, elastic cover 8.
The specific embodiment
Shown in Fig. 1-4, this keyless drill chuck axle bed is arranged between main body 1 and the integral type guidance seat 2, comprises pedestal 3, and endoporus 35 and pedestal 3 that this pedestal 3 has axial perforation are cylindric.Pedestal 3 outsides are provided with axle bed thread segment 31, are provided with location division 32 above axle bed thread segment 31, and the external diameter of described location division 32 is greater than the external diameter of axle bed thread segment 31.Keyless drill chuck of the present invention is different with conventional keyless drill chuck, comprises parts such as main body 1, lock-screw 4, integral type guidance seat 2, axle bed, jaw 5, plurality of balls 6, end shield 7, elastic cover 8.Main body 1 is cylindric, in main body 1 lower end by the lock-screw 4 that has been threaded, be equipped with in lock-screw 4 lower ends with respect to lock-screw 4 axially, circumferentially location and three jaws 5 movably radially.Main body 1 is located in the tubular integral type guidance seat 2, and the top of this integral type guidance seat 2 is that cylindrical circular monoblock type is held the portion of leading 21, and the bottom is the jaw rail portion 22 that is taper barrel.Be that integral type guidance seat 2 can be divided into two parts according to function, the one, jaw rail portion 22, i.e. integral type guidance seat bottom; The one, monoblock type is held the portion of leading 21, i.e. integral type guidance seat top; And jaw rail portion 22 and monoblock type are held the portion of leading 21 and are connected as a single entity.Have some guide grooves in jaw rail portion 22, jaw 5 is arranged in the guide groove with corresponding one by one setting of guide groove and jaw 5.Be provided with connecting thread section 21a in monoblock type is held the portion of leading 21, this connecting thread section 21a is threaded with axle bed thread segment 31.Be provided with positioning step 21b above connecting thread section 21a, this positioning step 21b and location division 32 tight fits are promptly on the forced positioning step 21b that is positioned at integral type guidance seat 2 in location division 32.The rigidity location of axle bed in keyless drill chuck realized in location division 32.Guarantee that with tight fit axle bed is as a whole with 2 one-tenth of integral type guidance seats by being threaded.
Main body 1 periphery is provided with the annular shaft shoulder 11, is provided with ring-shaped step 23 in the integral type guidance seat 2, and the annular shaft shoulder 11 is arranged on the ring-shaped step 23.The lower surface of pedestal 3 has ring-type arcuate groove 33, is provided with plurality of balls 6 between the ring-type arcuate groove 33 and the annular shaft shoulder 11.That is, pedestal 3 lower axial end and ball 6 and the annular shaft shoulder 11 form the seat ring of thrust bearing.
The upper surface of pedestal 3 is provided with at least two fabrication holes 34, and fabrication hole 34 distributes symmetrically and evenly at circumferencial direction.After pedestal 3 was installed in keyless drill chuck, pedestal 3 upper surfaces flushed with the upper surface of monoblock type guidance portion 21 substantially.
Specific embodiment described herein only is that the present invention's spirit is illustrated.The technical staff of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as main body 1, the annular shaft shoulder 11, trunnion 12, integral type guidance seat 2, monoblock type guidance portion 21, connecting thread section 21a, positioning step 21b, jaw rail portion 22, ring-shaped step 23, pedestal 3, axle bed thread segment 31, location division 32, ring-type arcuate groove 33, fabrication hole 34, endoporus 35, lock-screw 4, jaw 5, ball 6, end shield 7, elastic cover 8 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (4)
1. keyless drill chuck axle bed, be arranged between main body (1) and the integral type guidance seat (2), comprise pedestal (3), endoporus (35) and pedestal (3) that this pedestal (3) has axial perforation are cylindric, it is characterized in that, described pedestal (3) outside is provided with axle bed thread segment (31), is provided with location division (32) in the top of axle bed thread segment (31), and the external diameter of described location division (32) is greater than the external diameter of axle bed thread segment (31).
2. keyless drill chuck axle bed according to claim 1 is characterized in that, described pedestal (3) lower axial end forms the seat ring of thrust bearing; The lower surface of described pedestal (3) has ring-type arcuate groove (33).
3. keyless drill chuck axle bed according to claim 1 is characterized in that, described pedestal (3) radially inner side forms the bearing shell of radial plain bearing.
4. according to claim 1 or 2 or 3 described keyless drill chuck axle beds, it is characterized in that the upper surface of described pedestal (3) is provided with at least two fabrication holes (34), described fabrication hole (34) distributes symmetrically and evenly at circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136249.0A CN103212740B (en) | 2013-04-18 | 2013-04-18 | Keyless drill chuck axle bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310136249.0A CN103212740B (en) | 2013-04-18 | 2013-04-18 | Keyless drill chuck axle bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103212740A true CN103212740A (en) | 2013-07-24 |
| CN103212740B CN103212740B (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310136249.0A Active CN103212740B (en) | 2013-04-18 | 2013-04-18 | Keyless drill chuck axle bed |
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| Country | Link |
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| CN (1) | CN103212740B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169854A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Composite bearing for self-tightening drill chuck |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195990Y (en) * | 1994-01-28 | 1995-05-03 | 游友民 | Gripping device for drilling machine |
| CN2683288Y (en) * | 2004-03-19 | 2005-03-09 | 游友民 | Self fastened drill chuck with improved structure |
| CN2832375Y (en) * | 2005-09-27 | 2006-11-01 | 浙江三鸥机械股份有限公司 | Locking self-screwed drill chuck |
| EP1779948A1 (en) * | 2004-08-04 | 2007-05-02 | Shandong Weida Machinery Co., Ltd. | A manual self-locking drill chuck |
| WO2008009170A1 (en) * | 2006-07-11 | 2008-01-24 | Zhenqian Hu | Hand fastening drill chuck and bearing collar self-locking mechanism for the same |
| CN201067810Y (en) * | 2007-06-29 | 2008-06-04 | 游友民 | Elastic cover for drill chuck |
| CN203265721U (en) * | 2013-04-18 | 2013-11-06 | 玉环胜友工具有限公司 | Self-tight drill chuck shaft seat |
-
2013
- 2013-04-18 CN CN201310136249.0A patent/CN103212740B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195990Y (en) * | 1994-01-28 | 1995-05-03 | 游友民 | Gripping device for drilling machine |
| CN2683288Y (en) * | 2004-03-19 | 2005-03-09 | 游友民 | Self fastened drill chuck with improved structure |
| EP1779948A1 (en) * | 2004-08-04 | 2007-05-02 | Shandong Weida Machinery Co., Ltd. | A manual self-locking drill chuck |
| CN2832375Y (en) * | 2005-09-27 | 2006-11-01 | 浙江三鸥机械股份有限公司 | Locking self-screwed drill chuck |
| WO2008009170A1 (en) * | 2006-07-11 | 2008-01-24 | Zhenqian Hu | Hand fastening drill chuck and bearing collar self-locking mechanism for the same |
| CN201067810Y (en) * | 2007-06-29 | 2008-06-04 | 游友民 | Elastic cover for drill chuck |
| CN203265721U (en) * | 2013-04-18 | 2013-11-06 | 玉环胜友工具有限公司 | Self-tight drill chuck shaft seat |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014169854A1 (en) * | 2013-04-18 | 2014-10-23 | You Yihua | Composite bearing for self-tightening drill chuck |
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| Publication number | Publication date |
|---|---|
| CN103212740B (en) | 2016-08-31 |
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