CN109079167A - It is self-centering top - Google Patents
It is self-centering top Download PDFInfo
- Publication number
- CN109079167A CN109079167A CN201811017431.3A CN201811017431A CN109079167A CN 109079167 A CN109079167 A CN 109079167A CN 201811017431 A CN201811017431 A CN 201811017431A CN 109079167 A CN109079167 A CN 109079167A
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- CN
- China
- Prior art keywords
- bearing
- movable sleeve
- rack gear
- push rod
- gear
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
- B23B23/02—Dead centres
- B23B23/025—Dead centres the centres being adjustable
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The present invention relates to self-centering top, it includes mandril axis, push rod head is provided on the left of mandril axis, the outer surface of push rod head is evenly arranged with the second rack gear and second sliding slot, movable sleeve is provided on the outside of push rod head, movable sleeve is internally provided with gear, the first straight pin and the second straight pin are fixedly installed on movable sleeve, positioning sleeve is provided on the outside of movable sleeve, the first rack gear and first sliding groove are evenly arranged on the inside of positioning sleeve, axial workpiece is provided on the left of positioning sleeve, inclined-plane is provided on the left of positioning sleeve, the middle part setting of push rod head is fluted, compressed spring is provided in groove, one end of compressed spring connects movable sleeve, the bottom of the other end connecting groove of compressed spring, cylinder is provided on the right side of mandril axis, cone is provided on the right side of cylinder, the inside of cylinder has been set gradually from left to right first bearing, spacer, Second bearing, 3rd bearing；The present invention has the advantages that structurally reasonable, easy to use, clamping centering speed is fast, work efficiency is high.
Description
Technical field
The invention belongs to machinery tools technical fields, and in particular to self-centering top.
Background technique
In lathe turning operation, axial workpiece be it is very common, in working shaft-like part, generally first by axis class zero
One end of part is fixed on machine chuck, after the top carry out centering for then recycling lathe tail portion, withstands the another of axial workpiece
One end, it is more that this process often expends the time, so that Machining of Shaft-type Parts is inefficient；Therefore it provides a kind of structurally reasonable, just
In use, clamping centering speed is fast, work efficiency is high self-centering top is necessary.
Summary of the invention
The purpose of the invention is to overcome the deficiencies in the prior art, and provide a kind of structurally reasonable, easy to use, clamping
It is self-centering top that centering speed is fast, work efficiency is high.
The object of the present invention is achieved like this: self-centering top, it includes mandril axis, is set on the left of the mandril axis
Be equipped with push rod head, the outer surface of the push rod head is evenly arranged with the second rack gear and second sliding slot, the push rod head it is outer
Side is provided with movable sleeve, and the movable sleeve is internally provided with gear, the first cylinder is fixedly installed on the movable sleeve
Pin and the second straight pin are provided with positioning sleeve on the outside of the movable sleeve, and the is evenly arranged on the inside of the positioning sleeve
One rack gear and first sliding groove are provided with axial workpiece on the left of the positioning sleeve, are provided on the left of the positioning sleeve tiltedly
The middle part setting in face, the push rod head is fluted, is provided with compressed spring in the groove, and the one of the compressed spring
End connection movable sleeve, the bottom of the other end connecting groove of the compressed spring is provided with column on the right side of the mandril axis
Body, is provided with cone on the right side of the cylinder, the inside of the cylinder be set gradually from left to right first bearing, every
Set, second bearing, 3rd bearing are provided with end cap on the left of the cylinder, are provided with round hole in the middle part of the cone.
First straight pin is embedded into first sliding groove, can move horizontally relative to first sliding groove；Described
Two straight pins are embedded into second sliding slot, can move horizontally relative to second sliding slot, and the quantity of first straight pin is
Three, the quantity of second straight pin is three, and the quantity of the first sliding groove is three, the second sliding slot
Quantity is three.
First rack gear and the second rack gear is spur rack, the gear be straight-tooth gear, described first
Rack gear, the second rack gear, gear quantity be three.
The inclined-plane and horizontal angle are 45 °.
The first bearing, second bearing, 3rd bearing are deep groove ball bearing.
The spacer is torus spacer.
Beneficial effects of the present invention: the present invention is in use, and the present invention is mounted on tailstock tool, will then process
Axial workpiece be mounted on machine chuck, then push tailstock tool forward so that positioning sleeve in face of axial workpiece centering, and
Pushing rod head and mandril axis continue to promote, and the relative motion of gear, the first rack gear, the second rack gear drives positioning sleeve and movable sleeve fortune
Dynamic, positioning sleeve moves backward relative to movable sleeve, and after pivot bush unit contacts axial workpiece, mandril axis continues to promote until holding out against work
Dynamic set, to hold out against axial workpiece；In process, movable sleeve, positioning sleeve, mandril axis, push rod head are revolved together with part
Turn；The present invention has the advantages that structurally reasonable, easy to use, clamping centering speed is fast, work efficiency is high.
Detailed description of the invention
Fig. 1 is the front view under the self-centering top relaxation state of the present invention.
Fig. 2 is the self-centering top front view held out against under state of the present invention.
Fig. 3 is the self-centering top left view of the present invention.
In figure: 1, axial workpiece 2, positioning sleeve 3, the first rack gear 4, gear 5, the second rack gear 6, movable sleeve
7, compressed spring 8, groove 9, push rod head 10, mandril axis 11, end cap 12, first bearing 13, second bearing
14,3rd bearing 15, cone 16, spacer 17, cylinder 18, round hole 19, first sliding groove 20, the first straight pin
21, the second straight pin 22, second sliding slot 23, inclined-plane.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Embodiment 1
As shown in Figure 1-3, self-centering top, it includes mandril axis 10, and the left side of the mandril axis 10 is provided with push rod head 9,
The outer surface of the push rod head 9 is evenly arranged with the second rack gear 5 and second sliding slot 22, the outside setting of the push rod head 9
There is movable sleeve 6, the movable sleeve 6 is internally provided with gear 4, is fixedly installed the first straight pin on the movable sleeve 6
20 and second straight pin 21, the outside of the movable sleeve 6 be provided with positioning sleeve 2, the inside of the positioning sleeve 2 is uniformly arranged
There are the first rack gear 3 and first sliding groove 19, the left side of the positioning sleeve 6 is provided with axial workpiece 1, a left side for the positioning sleeve 2
Side is provided with inclined-plane 23, and the middle part of the push rod head 9 is arranged fluted 8, is provided with compressed spring 7, institute in the groove 8
The one end for the compressed spring 7 stated connects movable sleeve 6, and the bottom of the other end connecting groove 8 of the compressed spring 7 is described
The right side of mandril axis 10 is provided with cylinder 17, and the right side of the cylinder 17 is provided with cone 15, the inside of the cylinder 17
It has been set gradually from left to right first bearing 12, spacer 16, second bearing 13,3rd bearing 14, the left side of the cylinder 17
It is provided with end cap 11, the middle part of the cone 15 is provided with round hole 18.
The present invention is in use, and the present invention is mounted on tailstock tool, and the axial workpiece 1 that will then process is mounted on
On machine chuck, then push tailstock tool forward so that positioning sleeve 2 in face of axial workpiece 1 feel relieved, then push rod head 9 and push up
Bar axis 10 continues to promote, and the relative motion of gear 4, the first rack gear 3, the second rack gear 5 drives positioning sleeve 2 and movable sleeve 6 to move, fixed
Position set 2 moves backward relative to movable sleeve 6, and after movable sleeve 6 touches axial workpiece 1, mandril axis 10 continues to promote until holding out against
Movable sleeve 6, to hold out against axial workpiece 1；In process, movable sleeve 6, positioning sleeve 2, mandril axis 10, push rod head 9 are with zero
Part rotates together；The present invention has the advantages that structurally reasonable, easy to use, clamping centering speed is fast, work efficiency is high.
Embodiment 2
As shown in Figure 1-3, self-centering top, it includes mandril axis 10, and the left side of the mandril axis 10 is provided with push rod head 9,
The outer surface of the push rod head 9 is evenly arranged with the second rack gear 5 and second sliding slot 22, the outside setting of the push rod head 9
There is movable sleeve 6, the movable sleeve 6 is internally provided with gear 4, is fixedly installed the first straight pin on the movable sleeve 6
20 and second straight pin 21, the outside of the movable sleeve 6 be provided with positioning sleeve 2, the inside of the positioning sleeve 2 is uniformly arranged
There are the first rack gear 3 and first sliding groove 19, the left side of the positioning sleeve 6 is provided with axial workpiece 1, a left side for the positioning sleeve 2
Side is provided with inclined-plane 23, and the middle part of the push rod head 9 is arranged fluted 8, is provided with compressed spring 7, institute in the groove 8
The one end for the compressed spring 7 stated connects movable sleeve 6, and the bottom of the other end connecting groove 8 of the compressed spring 7 is described
The right side of mandril axis 10 is provided with cylinder 17, and the right side of the cylinder 17 is provided with cone 15, the inside of the cylinder 17
It has been set gradually from left to right first bearing 12, spacer 16, second bearing 13,3rd bearing 14, the left side of the cylinder 17
It is provided with end cap 11, the middle part of the cone 15 is provided with round hole 18.
For better effect, first straight pin 20 is embedded into first sliding groove 19, relative to first sliding groove 19
It can move horizontally；Second straight pin 21 is embedded into second sliding slot 22, horizontal can move relative to second sliding slot 22
Dynamic, the quantity of first straight pin 20 is three, and the quantity of second straight pin 21 is three, and described first is sliding
The quantity of slot 19 is three, and the quantity of the second sliding slot 22 is three.
For better effect, first rack gear 3 and the second rack gear 5 are spur rack, and the gear 4 is straight
Gear, first rack gear 3, the second rack gear 5, gear 4 quantity be three, in practical set, the middle part of gear 4
It is fixed on inside movable sleeve 6 by shaft, can be relatively rotated relative to movable sleeve 6.
For better effect, the inclined-plane 23 and horizontal angle are 45 °, and the inclined-plane 23 is in positioning sleeve 2
Interior formation tapered surface, so that the centering of axial workpiece is facilitated to position.
For better effect, the first bearing 12, second bearing 13,3rd bearing 14 are deep groove ball bearing.
For better effect, the spacer 16 is torus spacer.
The present invention is in use, and the present invention is mounted on tailstock tool, and the axial workpiece 1 that will then process is mounted on
On machine chuck, then push tailstock tool forward so that positioning sleeve 2 in face of axial workpiece 1 feel relieved, then push rod head 9 and push up
Bar axis 10 continues to promote, and the relative motion of gear 4, the first rack gear 3, the second rack gear 5 drives positioning sleeve 2 and movable sleeve 6 to move, fixed
Position set 2 moves backward relative to movable sleeve 6, and after movable sleeve 6 touches axial workpiece 1, mandril axis 10 continues to promote until holding out against
Movable sleeve 6, to hold out against axial workpiece 1；In process, movable sleeve 6, positioning sleeve 2, mandril axis 10, push rod head 9 are with zero
Part rotates together；The present invention uses compressed spring 7 so that 1 clamping effect of axial workpiece is more preferable, the present invention in use,
Distinguish coating lubricating oil, on the first rack gear, the second rack gear, gear, the first straight pin, the second straight pin convenient for above-mentioned part
Movement, is arranged round hole, in cone convenient for being fixed on tailstock tool；The present invention has structurally reasonable, easy to use, clamping
The advantages of centering speed is fast, work efficiency is high.
Claims (6)
1. self-centering top, it includes mandril axis, it is characterised in that: it is provided with push rod head on the left of the mandril axis, it is described
The outer surface of push rod head be evenly arranged with the second rack gear and second sliding slot, be provided with movable sleeve on the outside of the push rod head,
The movable sleeve is internally provided with gear, and the first straight pin and the second straight pin are fixedly installed on the movable sleeve,
It is provided with positioning sleeve on the outside of the movable sleeve, the first rack gear and first is evenly arranged on the inside of the positioning sleeve and is slided
Slot is provided with axial workpiece on the left of the positioning sleeve, inclined-plane, the push rod head is provided on the left of the positioning sleeve
Middle part setting it is fluted, be provided with compressed spring in the groove, one end of the compressed spring connects movable sleeve, institute
The bottom of the other end connecting groove for the compressed spring stated is provided with cylinder on the right side of the mandril axis, the cylinder
Right side is provided with cone, and the inside of the cylinder has been set gradually from left to right first bearing, spacer, second bearing, third
Bearing is provided with end cap on the left of the cylinder, is provided with round hole in the middle part of the cone.
2. as described in claim 1 self-centering top, it is characterised in that: first straight pin is embedded into first sliding groove
It is interior, it can be moved horizontally relative to first sliding groove；Second straight pin is embedded into second sliding slot, relative to second sliding slot
It can move horizontally, the quantity of first straight pin is three, and the quantity of second straight pin is three, described
The quantity of first sliding groove is three, and the quantity of the second sliding slot is three.
3. as described in claim 1 self-centering top, it is characterised in that: first rack gear and the second rack gear is straight-tooth
Rack gear, the gear be straight-tooth gear, first rack gear, the second rack gear, gear quantity be three.
4. as described in claim 1 self-centering top, it is characterised in that: the inclined-plane and horizontal angle are 45 °.
5. as described in claim 1 self-centering top, it is characterised in that: the first bearing, second bearing, 3rd bearing
It is deep groove ball bearing.
6. as described in claim 1 self-centering top, it is characterised in that: the spacer is torus spacer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017431.3A CN109079167B (en) | 2018-09-03 | 2018-09-03 | Self-centering centre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811017431.3A CN109079167B (en) | 2018-09-03 | 2018-09-03 | Self-centering centre |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109079167A true CN109079167A (en) | 2018-12-25 |
| CN109079167B CN109079167B (en) | 2020-02-21 |
Family
ID=64840467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811017431.3A Active CN109079167B (en) | 2018-09-03 | 2018-09-03 | Self-centering centre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109079167B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370907A (en) * | 1980-11-05 | 1983-02-01 | Felice Leo C | Positive stop center |
| WO2001076793A1 (en) * | 2000-04-10 | 2001-10-18 | Bissett Kevin J | Facedriver with fully-adaptable workpiece engagement and enhanced centerpoint force |
| CN2834747Y (en) * | 2005-12-03 | 2006-11-08 | 天水星火机床有限责任公司 | A hydraulic clamping device |
| CN201287586Y (en) * | 2008-10-23 | 2009-08-12 | 喻国锋 | Thimble apparatus |
| CN204366068U (en) * | 2014-12-12 | 2015-06-03 | 四川工程职业技术学院 | Floating type end-driver center |
| CN205129484U (en) * | 2015-11-27 | 2016-04-06 | 陕西北方动力有限责任公司 | Axial positioning centring means that floats |
| CN205393689U (en) * | 2016-02-27 | 2016-07-27 | 西安贝吉姆机床股份有限公司 | From centering spring clamping device |
| CN107538089A (en) * | 2017-08-28 | 2018-01-05 | 华星传动科技无锡有限公司 | Axle tooth processing self-locking clamp |
-
2018
- 2018-09-03 CN CN201811017431.3A patent/CN109079167B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4370907A (en) * | 1980-11-05 | 1983-02-01 | Felice Leo C | Positive stop center |
| WO2001076793A1 (en) * | 2000-04-10 | 2001-10-18 | Bissett Kevin J | Facedriver with fully-adaptable workpiece engagement and enhanced centerpoint force |
| CN2834747Y (en) * | 2005-12-03 | 2006-11-08 | 天水星火机床有限责任公司 | A hydraulic clamping device |
| CN201287586Y (en) * | 2008-10-23 | 2009-08-12 | 喻国锋 | Thimble apparatus |
| CN204366068U (en) * | 2014-12-12 | 2015-06-03 | 四川工程职业技术学院 | Floating type end-driver center |
| CN205129484U (en) * | 2015-11-27 | 2016-04-06 | 陕西北方动力有限责任公司 | Axial positioning centring means that floats |
| CN205393689U (en) * | 2016-02-27 | 2016-07-27 | 西安贝吉姆机床股份有限公司 | From centering spring clamping device |
| CN107538089A (en) * | 2017-08-28 | 2018-01-05 | 华星传动科技无锡有限公司 | Axle tooth processing self-locking clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109079167B (en) | 2020-02-21 |
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