CN215317045U - Wear-resistant hand-tightened drill chuck - Google Patents
Wear-resistant hand-tightened drill chuck Download PDFInfo
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- CN215317045U CN215317045U CN202121307261.XU CN202121307261U CN215317045U CN 215317045 U CN215317045 U CN 215317045U CN 202121307261 U CN202121307261 U CN 202121307261U CN 215317045 U CN215317045 U CN 215317045U
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Abstract
The utility model discloses a wear-resistant hand-tightened drill chuck, which comprises a drill body and a clamping jaw, wherein the clamping jaw is arranged in an inclined hole in the drill body and can move and guide along the axial direction of the inclined hole; the hand tightening nut is provided with a hand tightening sleeve, and the hand tightening nut is driven to synchronously rotate by rotating the hand tightening sleeve, so that the clamping jaw axially moves along the inclined hole; the hand tight sleeve and the drill body are connected in a positioning mode through a clamping groove structure. The lubricating sheet made of the polyformaldehyde material is high in lubrication degree, so that the degree of easy abrasion is greatly reduced, and in addition, the structure of the lubricating sheet is more stable, so that the hand-tightened nut is more stable in work; the hand tight sleeve is directly clamped in the annular clamping groove through the clamping protrusion, so that connection with the drill body is completed, the structure is optimized and simple, and assembly is convenient.
Description
Technical Field
The utility model relates to a wear-resistant hand-tightened drill chuck.
Background
The hand-tightened drill chuck generally comprises a drill body and a clamping jaw which is arranged in an inclined hole in the drill body and can move and guide along the axial direction of the inclined hole, wherein a hand-tightened nut sleeve is arranged on the drill body and is in threaded connection with threads of the clamping jaw, the relative positioning between the hand-tightened nut and the drill body is realized through the hand-tightened sleeve, the positioning between the hand-tightened sleeve and the drill body is realized through a decorative sleeve, a rolling bearing is arranged on the drill body, the lower end of the hand-tightened nut is attached and pressed on the rolling bearing, so that the hand-tightened nut is more smooth when the drill body rotates around an axis relatively, and meanwhile, the hand-tightened nut has a rotary support to achieve the purpose of stability. The above-mentioned kind of structure's tight drill chuck of hand has following defect: 1. the hand tightening sleeve is connected with the drill body through the decorative sleeve, the structure is complex, the installation is inconvenient, the manufacturing cost is relatively high, and the decorative sleeve is in interference fit during installation and is easy to crack; 2. antifriction bearing's structure is the support and sets up a plurality of balls on the support, when using, probably has the condition that ball and support take place to block the shell, perhaps is the long-time back of using, the dry back of lubricating oil in the antifriction bearing, its ball rolls unsmoothly to make the tight nut of hand more labouring when rotatory, use experience is poor, in addition, when the ball of antifriction bearing takes place to block the shell, the frictional force increase between tight nut of hand and the ball, this wearing and tearing aggravation that leads to the tight nut of hand.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a wear-resistant hand-tightened drill chuck, which simplifies the structure, ensures that the whole structure is more stable and the cost is lower, and simultaneously, the hand-tightened nut is smoother when rotating.
In order to solve the technical problems, the technical scheme of the wear-resistant hand-tightened drill chuck provided by the utility model is as follows:
the utility model discloses a wear-resistant hand-tightened drill chuck, which comprises a drill body and a clamping jaw arranged in an inclined hole in the drill body and capable of moving and guiding along the axial direction of the inclined hole, and is characterized in that: the drill body is provided with a supporting platform, the supporting platform is provided with a lubricating sheet, the hand-tightening nut is abutted against the lubricating sheet, and the internal thread of the hand-tightening nut is in threaded connection with the external thread on the clamping jaw; be equipped with the hand tight sleeve on hand tight nut, through rotatory hand tight sleeve to drive hand tight nut synchronous revolution, make the clamping jaw follow inclined hole axial displacement then.
The lubricating sheet is an annular sheet made of polyformaldehyde materials, and the outer peripheral wall of the annular sheet is matched with the inner wall of the hand tightening sleeve, so that the radial clearance of the annular sheet is controlled.
The lubricating sheet is an annular sheet made of polyformaldehyde materials, and the annular sheet is sleeved on the outer peripheral surface of the supporting platform, so that the radial gap of the annular sheet is controlled.
The bottom surface of the annular sheet is circumferentially and uniformly provided with a plurality of raised claws, and the raised claws are sleeved on the outer peripheral surface of the supporting platform in a matching manner.
The hand tightening nut is of a polygonal structure, and a polygonal groove correspondingly matched with the hand tightening nut is formed in the inner wall of the hand tightening sleeve.
The utility model discloses a drill bit, including the hand tight sleeve, the hand tight sleeve is equipped with the draw-in groove structure between the body with boring to realize that the axial between the hand tight sleeve and the body with boring is spacing, the draw-in groove structure is protruding including setting up the ring groove who bores the external wall of body and setting up the card that corresponds the joint with ring groove at the hand tight sleeve inner wall, be equipped with a plurality of breachs on the card arch, a plurality of breachs make the card protruding to be cut apart into a plurality of lugs, the lower edge of lug is the fillet, goes up along being the right angle.
The height of the clamping protrusion is smaller than that of the annular clamping groove.
The clamping protrusion is a metal insert and is integrally injection-molded with the hand tightening sleeve.
When the clamping jaw is in a clamping state, the external thread of the clamping jaw and the internal thread of the hand nut are mutually tightly pressed, the hand nut tightly presses the lubricating sheet on the supporting platform, and the lubricating sheet generates elastic deformation.
The utility model has the beneficial effects that:
compared with the prior art, the wear-resistant hand-tightened drill chuck adopts the lubricating sheet to replace the existing rolling bearing, so that the existence of a clamping shell is avoided, and the condition that a hand-tightened nut is excessively worn is further avoided;
compared with the prior art, the wear-resistant hand-tightened drill chuck is high in lubrication degree by adopting the lubricating sheet made of polyformaldehyde material, so that the degree of easy wear is greatly reduced, and in addition, the structure of the lubricating sheet is more stable, so that the hand-tightened nut is more stable in working;
compared with the prior art, the wear-resistant hand-tightened drill chuck has the advantages that the hand-tightened sleeve is directly clamped in the annular clamping groove through the clamping protrusion, so that the connection with a drill body is completed, the structure is optimized and simple, and the assembly is more convenient;
compared with the prior art, the wear-resistant hand-tightened drill chuck provided by the utility model has the advantages that in order to enable the clamping protrusion to be clamped into the annular clamping groove more easily, the clamping protrusion is particularly divided into a plurality of sections, and then the lower edges of the round corners of the convex blocks are combined, so that the convex blocks are rapidly clamped into the annular clamping groove, and meanwhile, the convex blocks are prevented from being separated from the annular clamping groove through the right-angled upper edges of the convex blocks, so that the hand-tightened nut can be combined with a drill body more stably;
compared with the prior art, the wear-resistant hand-tightened drill chuck has the advantages that the height of the clamping protrusion is smaller than that of the annular clamping groove, so that the hand-tightened sleeve has a moving space relative to a drill body along the axial direction, the hand-tightened sleeve and the hand-tightened nut can be connected and fixed in place under the condition that the machining precision of the hand-tightened nut is not high, the lubricating sheet is worn under the extreme condition, the end face of the hand-tightened nut can be well abutted against the lubricating sheet through the axial movement of the hand-tightened sleeve, and the hand-tightened nut is enabled to have a supporting surface during rotation and rotate more stably.
Drawings
FIG. 1 is a cross-sectional view of the construction of one embodiment of the wear resistant hand-held drill chuck of the present invention;
FIG. 2 is a cross-sectional view of another embodiment of the wear resistant hand-held drill chuck of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an exploded perspective view of the wear resistant hand-held drill chuck of the present invention;
FIG. 5 is a perspective view of one perspective of the gripping sleeve of the wear-resistant closeable drill chuck of the present invention;
FIG. 6 is a perspective view of another perspective of the hand gripping sleeve of the wear-resistant hand-gripped drill chuck of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 to 6, the utility model provides a wear-resistant hand-tightened drill chuck, which comprises a drill body 1 and a clamping jaw 2 arranged in an inclined hole 15 in the drill body 1 and capable of moving and guiding along the axial direction of the inclined hole, wherein a supporting platform 3 is arranged on the drill body 1, a lubricating sheet 4 is arranged on the supporting platform 3, a hand-tightened nut 5 abuts against the lubricating sheet 4, and an internal thread of the hand-tightened nut 5 is in threaded connection with an external thread 16 on the clamping jaw 2; the hand tightening nut 5 is provided with a hand tightening sleeve 6, and the hand tightening nut 5 is driven to synchronously rotate by rotating the hand tightening sleeve 6, so that the clamping jaw 2 axially moves along the inclined hole; the hand tight sleeve 6 is connected with the drill body 1 in a positioning mode through a clamping groove structure 7.
As shown in figure 1, the lubrication sheet 4 is an annular sheet made of polyformaldehyde material, and the outer peripheral wall of the annular sheet is matched and attached to the inner wall of the hand tightening sleeve 6, so that the lubrication sheet is positioned and limited in the radial direction.
As shown in fig. 2, the lubricant sheet 4 is an annular sheet made of polyoxymethylene, and the annular sheet is fixedly sleeved on the outer peripheral surface of the supporting platform 3 through a plurality of protruding claws 8, so that the lubricant sheet is positioned in the radial direction.
In the actual production process, lubricating sheet 4 is integrated into one piece structure, and in order to further improve lubricated degree, we can set up a plurality of bumps on lubricating sheet 4's surface, in addition, when tight nut 5 of hand was rotatory, the contact friction took place between tight nut 5 of hand and lubricating sheet 4, perhaps tight nut 5 of hand and lubricating sheet 4 synchronous revolution, lubricating sheet 4 at this moment took place contact friction with supporting platform 3.
The hand nut is of a polygonal structure, usually hexagonal.
Draw-in groove structure 7 is including setting up at the ring groove 9 of the 1 outer wall of the brill body and setting up at the protruding 10 of card that corresponds the joint with ring groove 9 of tight cover 6 inner wall of hand, be equipped with a plurality of breachs 11 on the protruding 10 of card, a plurality of breachs 11 make the protruding 10 of card cut apart into a plurality of lugs 12, the lower edge of lug 12 is fillet 13, goes up along being right angle 14.
The height of the clamping projection 10 is smaller than that of the annular clamping groove 9.
The clamping protrusion 10 is a metal insert and is integrally injection-molded with the hand tightening sleeve 6, or the clamping protrusion 10 and the hand tightening sleeve 6 are integrally injection-molded.
The utility model relates to a wear-resistant hand-tightened drill chuck, wherein a hand-tightened sleeve 6 is connected with a drill body 1 as follows: the tight cover 6 cover of hand is established on boring body 1 for the protruding 10 of card supports and leans on the tip of boring body 1, and moves tight cover 6 of hand along the axial towards ring groove 9 direction with strength, because the protruding 10 of card is cut apart into a plurality of lugs 12, thereby reduces the frictional resistance between the protruding 10 of card and the boring body 1, and makes tight cover 6 of hand change shape, thereby makes protruding 10 card of card establish into ring groove 9. In addition, the lower edge of the lug 12 in the moving direction is provided with a round angle 13, so that the lug 12 can more conveniently cross the outer wall of the drill body 1 and be clamped into the ring-shaped clamping groove 9, and in order to avoid the later separation of the lug 12 from the ring-shaped clamping groove 9, the upper edge of the lug 12 is particularly made to be a right angle 14, so that the situation that the clamping protrusion 10 is separated from the ring-shaped clamping groove 9 is prevented.
When the clamping jaw 2 is in a clamping state, the external thread 16 of the clamping jaw 2 and the internal thread of the hand nut 5 are mutually pressed tightly, the hand nut 5 tightly presses the lubricating sheet 4 on the supporting platform, the lubricating sheet 4 generates elastic deformation, therefore, when the clamping jaw 2 clamps the drill bit and is in a clamping state, the upper surface of the lubricating sheet 4 is pressed by the hand nut 5, the lower surface of the lubricating sheet 4 is pressed by the supporting platform 3, the lubricating sheet 4 clamped between the lubricating sheet and the supporting platform is deformed and generates elasticity, and the elasticity can form continuous pretightening force on the hand nut 5, so that the clamping jaw 2 maintains a stable clamping effect, while if the drill bit is subjected to impact loads during operation, moist gleitbretter 4 also can form the buffering and reset fast through self elastic deformation, avoids the condition of rigidity collision and reduces the probability that tight nut 5 of hand and clamping jaw 2 received the impact pine and take off, strengthens the centre gripping effect.
The above detailed description of the wear-resistant closefisted drill chuck according to the embodiment of the present invention is provided, and the principle and the embodiment of the present invention are explained by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution disclosed by the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. The utility model provides a stand wear and tear tight drill chuck of hand, can follow the clamping jaw of inclined hole axial displacement direction in boring the body and establishing the inclined hole in boring, its characterized in that: the drill body is provided with a supporting platform, the supporting platform is provided with a lubricating sheet, the hand-tightening nut is abutted against the lubricating sheet, and the internal thread of the hand-tightening nut is in threaded connection with the external thread on the clamping jaw; be equipped with the hand tight sleeve on hand tight nut, through rotatory hand tight sleeve to drive hand tight nut synchronous revolution, make the clamping jaw follow inclined hole axial displacement then.
2. A wear-resistant closefisted drill chuck according to claim 1, wherein: the lubricating sheet is an annular sheet made of polyformaldehyde materials, and the outer peripheral wall of the annular sheet is matched with the inner wall of the hand tightening sleeve, so that the radial clearance of the annular sheet is controlled.
3. A wear-resistant closefisted drill chuck according to claim 1, wherein: the lubricating sheet is an annular sheet made of polyformaldehyde materials, and the annular sheet is sleeved on the outer peripheral surface of the supporting platform, so that the radial gap of the annular sheet is controlled.
4. A wear-resistant closefisted drill chuck according to claim 3, wherein: the bottom surface of the annular sheet is circumferentially and uniformly provided with a plurality of raised claws, and the raised claws are sleeved on the outer peripheral surface of the supporting platform in a matching manner.
5. A wear-resistant closefisted drill chuck according to claim 1, wherein: the hand tightening nut is of a polygonal structure, and a polygonal groove correspondingly matched with the hand tightening nut is formed in the inner wall of the hand tightening sleeve.
6. A wear-resistant closefisted drill chuck according to claim 1, wherein: the utility model discloses a drill bit, including the hand tight sleeve, the hand tight sleeve is equipped with the draw-in groove structure between the body with boring to realize that the axial between the hand tight sleeve and the body with boring is spacing, the draw-in groove structure is protruding including setting up the ring groove who bores the external wall of body and setting up the card that corresponds the joint with ring groove at the hand tight sleeve inner wall, be equipped with a plurality of breachs on the card arch, a plurality of breachs make the card protruding to be cut apart into a plurality of lugs, the lower edge of lug is the fillet, goes up along being the right angle.
7. A wear-resistant closefisted drill chuck according to claim 6, wherein: the height of the clamping protrusion is smaller than that of the annular clamping groove.
8. A wear-resistant closefisted drill chuck according to claim 6, wherein: the clamping protrusion is a metal insert and is integrally injection-molded with the hand tightening sleeve.
9. A wear-resistant closefisted drill chuck according to claim 1, wherein: when the clamping jaw is in a clamping state, the external thread of the clamping jaw and the internal thread of the hand nut are mutually tightly pressed, the hand nut tightly presses the lubricating sheet on the supporting platform, and the lubricating sheet generates elastic deformation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020227728884 | 2020-11-26 | ||
| CN202022772888 | 2020-11-26 |
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| Publication Number | Publication Date |
|---|---|
| CN215317045U true CN215317045U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121307261.XU Active CN215317045U (en) | 2020-11-26 | 2021-06-11 | Wear-resistant hand-tightened drill chuck |
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| CN (1) | CN215317045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734281A (en) * | 2022-04-15 | 2022-07-12 | 广州市翔翎金属制品有限公司 | Multistation cnc buffering anchor clamps |
-
2021
- 2021-06-11 CN CN202121307261.XU patent/CN215317045U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734281A (en) * | 2022-04-15 | 2022-07-12 | 广州市翔翎金属制品有限公司 | Multistation cnc buffering anchor clamps |
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