CN204686067U - A kind of circular arc hypervelocity fixture - Google Patents
A kind of circular arc hypervelocity fixture Download PDFInfo
- Publication number
- CN204686067U CN204686067U CN201520325388.2U CN201520325388U CN204686067U CN 204686067 U CN204686067 U CN 204686067U CN 201520325388 U CN201520325388 U CN 201520325388U CN 204686067 U CN204686067 U CN 204686067U
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- CN
- China
- Prior art keywords
- chute
- cylindrical body
- steel ball
- ring portion
- hypervelocity
- Prior art date
- 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.)
- Expired - Fee Related
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- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
The utility model discloses a kind of circular arc hypervelocity fixture, comprise cylindrical body, protrude ring portion, annular dead slot and chute, wherein, the bottom of above-mentioned cylindrical body is provided with bulge loop; Above-mentioned protrusion ring portion is arranged on the upper end of cylindrical body, protrudes between ring portion and bulge loop and forms annular dead slot; Above-mentioned chute comprises at least two, and chute is arranged along the week circle uniform intervals protruding ring portion, the head and the tail two ends of the through protrusion ring portion of chute, and is communicated with above-mentioned annular dead slot; Chute Inner holds dual-side to be provided with arc sections, is provided with steel ball in chute, and steel ball is by the clamper main body axial location of peripheral hardware, and clamper main body drives steel ball to rotate, and makes steel ball be adjacent to arc sections, to drive cylindrical body to rotate.The utility model adopt spheroid contact as power transmission face with arc surface, promote by screw tap torque axis is changed to axial force cylindrical body carry out axially-movable make steel ball power transmission inefficacy and play overload protective function.
Description
Technical field
The utility model relates to threading drill bit field, refers in particular to a kind of circular arc hypervelocity fixture.
Background technology
Boring and tapping is commonly used in mechanical processing process; boring refers to processes the operation of portalling with drill bit on solid material; tapping to be screwed in by screw tap in the bottom outlet that will bore with certain moment of torsion to process internal thread; boring and tapping need to drive drill bit and screw tap High Rotation Speed respectively; the torque axis of rotating shaft to be changed to the driving force of boring and tapping downwards; drill bit and screw tap are separately fixed on chuck; its High Rotation Speed is driven by chuck; drill bit and the screw tap of High Rotation Speed need overload protection arrangement, fracture to prevent overload excessive or moment of torsion excessive and twist into two parts.
Tapping overload protection bores to attack the problem always studied in field, as the Authorization Notice No. Chinese utility model patent " a kind of device shielded when tapping is transshipped " that is CN 202185652U discloses a kind of upper conjoint disk of being engaged by ring-type stepped tooth and lower conjoint disk, upper conjoint disk is fixedly connected with knife bar, lower conjoint disk drives knife bar motion by upper conjoint disk, when the moment of torsion that knife bar bears is excessive, upper conjoint disk and lower conjoint disk depart from, make transmission failure, thus play overload protective function, this kind of overcurrent protection structure only can carry out radial overload protective function, axial force is larger, upper conjoint disk is combined tightr with lower conjoint disk, therefore easily there is the situation that screw tap fractures because axial force is excessive, in addition, its required breakaway force that comes off of the mode that stepped tooth combines is very large, the situation of screw tap with regard to having fractureed when frequent appearance does not reach conjoint disk and lower conjoint disk breakaway force.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art; there is provided a kind of spheroid that adopts contact as power transmission face with arc surface, promote by screw tap torque axis is changed to axial force that cylindrical body carries out that axially-movable makes steel ball power transmission inefficacy and the circular arc that plays overload protective function exceeds the speed limit fixture.
The technical scheme that the utility model is taked is as follows: a kind of circular arc hypervelocity fixture, and comprise cylindrical body, protrude ring portion, annular dead slot and chute, wherein, the bottom of above-mentioned cylindrical body is provided with bulge loop; Above-mentioned protrusion ring portion is arranged on the upper end of cylindrical body, protrudes between ring portion and bulge loop and forms annular dead slot; Above-mentioned chute comprises at least two, and chute is arranged along the week circle uniform intervals protruding ring portion, the head and the tail two ends of the through protrusion ring portion of chute, and is communicated with above-mentioned annular dead slot; Chute Inner holds dual-side to be provided with arc sections, is provided with steel ball in chute, and steel ball is by the clamper main body axial location of peripheral hardware, and clamper main body drives steel ball to rotate, and makes steel ball be adjacent to arc sections, to drive cylindrical body to rotate.
Preferably, the inside of described cylindrical body is from top to bottom provided with installing hole and square hole according to this, and the width of square hole is less than the diameter of installing hole, and extends downward the bottom of cylindrical body along the bottom of installing hole.
Preferably, be mounted with screw tap in described square hole, cylindrical body drives screw tap motion by square hole.
Preferably, described chute comprises four, four spaced apart peripheries being located at above-mentioned protrusion ring portion of chute; The width of above-mentioned chute is greater than the diameter of steel ball, so that steel ball relative sliding in chute, the diameter of arc sections is greater than the diameter of steel ball.
Preferably, the surrounding annulus of described square hole is provided with Compress Spring, Compress Spring extends upwardly to the outside of cylindrical body through installing hole.
Preferably, the top of described Compress Spring is connected on adjusting nut, and adjusting nut is threaded with the Gripper body of peripheral hardware, by adjusting the axial location of adjusting nut, provides actual loading to cylindrical body to make Compress Spring.
Preferably, described clamper main body drives screw tap to do axial feed motion and radial rotary motion by steel ball and cylindrical body, to complete tapping, tapping material is to screw tap axial force, to screw tap radial load, when the axial decomposing force sum of axial force and radial load is greater than real load, cylindrical body upward sliding makes steel ball skid off outside chute, transmission failure.
The beneficial effects of the utility model are:
The utility model has carried out Creative Design for prior art problem, by arranging the clamp structure that a kind of structure is tubular, the two ends of the cylindrical body of this clamp structure are respectively equipped with bulge loop and protrude ring portion, annular dead slot structure is formed between bulge loop and protrusion ring portion, protrude in ring portion and offer four chutes, chute is arranged along the ambient separation protruding ring portion, steel ball is provided with in chute, steel ball is force transferring part, the Gripper body of steel ball outside drives cylindrical body to rotate and axial feed by steel ball, cylindrical body then drives screw tap to rotate and axial feed by the square hole arranged in it, steel ball is that axial limiting is fixed, cylindrical body then can carry out axially-movable, cylindrical body one actual loading Fs is in advance provided by Compress Spring, the creative part of the utility model is the dual-side of chute to be set to arc sections, the diameter of this arc sections is greater than steel ball size, steel ball directly contacts with arc sections, screw tap by the reactive torque effect of bearing during motion on cylindrical body, cylindrical body then by this torsional interaction on steel ball, this moment of torsion active force is in axial direction F1, the axial force that steel ball bears is F3, when F1+F3 is greater than Fs, by cylindrical body upwardly, steel ball slips in annular dead slot steel ball, and grinding ball transmission lost efficacy, thus completing overload protective function, screw tap skids, in addition, due to Compress Spring cushioning effect, after screw tap skids, if lathe drives screw tap to proceed axial feed, the situation that fractureing appears because axial force is excessive in screw tap can be prevented.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the top view of Fig. 1.
Fig. 4 is the utility model force analysis figure.
Fig. 5 is the force analysis figure of line channel.
Fig. 6 is application structure schematic diagram of the present utility model.
Fig. 7 is data analysis table of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figures 1 to 7, the technical scheme that the utility model is taked is as follows: a kind of circular arc hypervelocity fixture, and comprise cylindrical body 2, protrude ring portion 1, annular dead slot 3 and chute 4, wherein, the bottom of above-mentioned cylindrical body 2 is provided with bulge loop; Above-mentioned protrusion ring portion 1 is arranged on the upper end of cylindrical body 2, protrudes between ring portion 1 and bulge loop and forms annular dead slot 3; Above-mentioned chute 4 comprises at least two, and chute 4 is arranged along the week circle uniform intervals protruding ring portion 1, the head and the tail two ends of the through protrusion ring portion 1 of chute 4, and is communicated with above-mentioned annular dead slot 3; Chute 4 Inner holds dual-side to be provided with arc sections R, is provided with steel ball 5 in chute 4, and steel ball 5 is by the clamper main body axial location of peripheral hardware, and clamper main body drives steel ball 5 to rotate, and makes steel ball 5 be adjacent to arc sections R, to drive cylindrical body 2 to rotate.
The inside of cylindrical body 1 is from top to bottom provided with installing hole 6 and square hole 7 according to this, and the width of square hole 7 is less than the diameter of installing hole 6, and extends downward the bottom of cylindrical body 2 along the bottom of installing hole 6.
Be mounted with screw tap in square hole 7, cylindrical body 2 drives screw tap to move by square hole 7.
Chute 4 comprises four, four spaced apart peripheries being located at above-mentioned protrusion ring portion 1 of chute 4; The width of above-mentioned chute 4 is greater than the diameter of steel ball 5, so that steel ball 5 relative sliding in chute 4, the diameter of arc sections R is greater than the diameter of steel ball 5.
The surrounding annulus of square hole 7 is provided with Compress Spring 8, Compress Spring 8 extends upwardly to the outside of cylindrical body 2 through installing hole 6.
The top of Compress Spring 8 is connected on adjusting nut 9, and adjusting nut 9 is threaded with the Gripper body of peripheral hardware, by adjusting the axial location of adjusting nut 9, provides actual loading Fs to cylindrical body 2 to make Compress Spring 8.
Clamper main body drives screw tap to do axial feed motion and radial rotary motion by steel ball 5 and cylindrical body 2, to complete tapping, tapping material is to screw tap axial force F 3, to screw tap radial load F, when axial force F 3 is greater than real load Fs with the axial decomposing force F1 sum of radial load F, cylindrical body 2 upward sliding makes steel ball 5 skid off outside chute 4, transmission failure.
Further, the utility model is by arranging the clamp structure that a kind of structure is tubular, the two ends of the cylindrical body of this clamp structure are respectively equipped with bulge loop and protrude ring portion, annular dead slot structure is formed between bulge loop and protrusion ring portion, protrude in ring portion and offer four chutes, chute is arranged along the ambient separation protruding ring portion, steel ball is provided with in chute, steel ball is force transferring part, the Gripper body of steel ball outside drives cylindrical body to rotate and axial feed by steel ball, cylindrical body then drives screw tap to rotate and axial feed by the square hole arranged in it, steel ball is that axial limiting is fixed, cylindrical body then can carry out axially-movable, cylindrical body one actual loading Fs is in advance provided by Compress Spring, the creative part of the utility model is the dual-side of chute to be set to arc sections, the diameter of this arc sections is greater than steel ball size, steel ball directly contacts with arc sections, screw tap by the reactive torque effect of bearing during motion on cylindrical body, cylindrical body then by this torsional interaction on steel ball, this moment of torsion active force is in axial direction F1, the axial force that steel ball bears is F3, when F1+F3 is greater than Fs, by cylindrical body upwardly, steel ball slips in annular dead slot steel ball, and grinding ball transmission lost efficacy, thus completing overload protective function, screw tap skids, in addition, due to Compress Spring cushioning effect, after screw tap skids, if lathe drives screw tap to proceed axial feed, the situation that fractureing appears because axial force is excessive in screw tap can be prevented.
Further, experiment load of the present utility model:
F
sunit N
τ
s=(1.1 ~ 1.3) τ
In formula: material shearing stress:
F: be live load;
D: in spring through mm;
D: be material diameter mm;
K: be curvature correction factor;
C: curl up ratio.
By above-mentioned two formula for the real load of the determined Compress Spring of pass of different model as shown in Fig. 7 form.
Embodiment of the present utility model just introduces its detailed description of the invention, does not lie in and limits its protection domain.The technical staff of the industry can make some amendment under the inspiration of the present embodiment, therefore all equivalences done according to the utility model the scope of the claims change or modify, and all belong within the scope of the utility model Patent right requirement.
Claims (7)
1. a circular arc hypervelocity fixture, it is characterized in that: comprise cylindrical body (2), protrude ring portion (1), annular dead slot (3) and chute (4), wherein, the bottom of above-mentioned cylindrical body (2) is provided with bulge loop; Above-mentioned protrusion ring portion (1) is arranged on the upper end of cylindrical body (2), protrudes between ring portion (1) and bulge loop and forms annular dead slot (3); Above-mentioned chute (4) comprises at least two, chute (4) is arranged along the week circle uniform intervals protruding ring portion (1), the head and the tail two ends of the through protrusion ring portion (1) of chute (4), and be communicated with above-mentioned annular dead slot (3); Chute (4) Inner holds dual-side to be provided with arc sections (R), steel ball (5) is provided with in chute (4), steel ball (5) is by the clamper main body axial location of peripheral hardware, clamper main body drives steel ball (5) to rotate, steel ball (5) is made to be adjacent to arc sections (R), to drive cylindrical body (2) to rotate.
2. a kind of circular arc hypervelocity fixture according to claim 1, it is characterized in that: the inside of described cylindrical body (1) is from top to bottom provided with installing hole (6) and square hole (7) according to this, the width of square hole (7) is less than the diameter of installing hole (6), and extends downward the bottom of cylindrical body (2) along the bottom of installing hole (6).
3. a kind of circular arc hypervelocity fixture according to claim 2, it is characterized in that: be mounted with screw tap in described square hole (7), cylindrical body (2) drives screw tap motion by square hole (7).
4. a kind of circular arc hypervelocity fixture according to claim 3, is characterized in that: described chute (4) comprises four, four spaced apart peripheries being located at above-mentioned protrusion ring portion (1) of chute (4); The width of above-mentioned chute (4) is greater than the diameter of steel ball (5), so that steel ball (5) relative sliding in chute (4), the diameter of arc sections (R) is greater than the diameter of steel ball (5).
5. a kind of circular arc hypervelocity fixture according to claim 4, it is characterized in that: the surrounding annulus of described square hole (7) is provided with Compress Spring (8), and Compress Spring (8) extends upwardly to the outside of cylindrical body (2) through installing hole (6).
6. a kind of circular arc hypervelocity fixture according to claim 5, it is characterized in that: the top of described Compress Spring (8) is connected on adjusting nut (9), adjusting nut (9) is threaded with the Gripper body of peripheral hardware, by the axial location of adjustment adjusting nut (9), provide actual loading (Fs) to cylindrical body (2) to make Compress Spring (8).
7. a kind of circular arc hypervelocity fixture according to claim 6, it is characterized in that: described clamper main body drives screw tap to do axial feed motion and radial rotary motion by steel ball (5) and cylindrical body (2), to complete tapping, tapping material is to screw tap axial force (F3), to screw tap radial load (F), when axial force (F3) is greater than real load (Fs) with axial decomposing force (F1) sum of radial load (F), cylindrical body (2) upward sliding makes steel ball (5) skid off chute (4) outward, transmission failure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520325388.2U CN204686067U (en) | 2015-05-19 | 2015-05-19 | A kind of circular arc hypervelocity fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520325388.2U CN204686067U (en) | 2015-05-19 | 2015-05-19 | A kind of circular arc hypervelocity fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204686067U true CN204686067U (en) | 2015-10-07 |
Family
ID=54226410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520325388.2U Expired - Fee Related CN204686067U (en) | 2015-05-19 | 2015-05-19 | A kind of circular arc hypervelocity fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204686067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801790A (en) * | 2015-05-19 | 2015-07-29 | 深圳比特力机械有限公司 | Circular arc overspeed fixture |
-
2015
- 2015-05-19 CN CN201520325388.2U patent/CN204686067U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801790A (en) * | 2015-05-19 | 2015-07-29 | 深圳比特力机械有限公司 | Circular arc overspeed fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20180519 |