CN202448058U - Positioning mechanism for automatic centering center - Google Patents
Positioning mechanism for automatic centering center Download PDFInfo
- Publication number
- CN202448058U CN202448058U CN2011205373645U CN201120537364U CN202448058U CN 202448058 U CN202448058 U CN 202448058U CN 2011205373645 U CN2011205373645 U CN 2011205373645U CN 201120537364 U CN201120537364 U CN 201120537364U CN 202448058 U CN202448058 U CN 202448058U
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- Prior art keywords
- skewed slot
- axle
- supporting seat
- nut
- center
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Abstract
The utility model discloses an automatic positioning mechanism at alignment center. The mandrel comprises a small-diameter section, a large-diameter section and a thread section which are sequentially connected, the bottom plate is provided with a bottom plate hole in sliding fit with the small-diameter section, a clamping groove is formed in the outer part of the small-diameter section, extending out of the bottom plate hole, and an elastic check ring is sleeved on the clamping groove; the chute nut is coaxially arranged outside the mandrel, the upper section of an inner hole of the chute nut is a threaded hole, the lower section of the inner hole of the chute nut is a cylindrical hole, and a plurality of chutes are arranged along the circumference; the sliding block is embedded in the chute, the supporting seat is fixed on the bottom plate, a plurality of kidney-shaped grooves are formed in the supporting seat along the circumference, and the end cover is fixed on the supporting seat; the compression spring is sleeved on the mandrel, the upper end of the compression spring is abutted against the bottom surface of the chute nut, and the lower end of the compression spring is abutted against the top surface of the bottom plate. The utility model has the characteristics of automatic alignment detects work piece center, eliminates and detects work piece hole and location position clearance, detection precision height, adjustment range are big.
Description
Technical field
The utility model belongs to the endoporus centring means of machining parts, refers to the detent mechanism at a kind of automatic capturing center particularly.
Background technology
The general modes such as cylindrical mandrel, tapering axle, elastic expansion-sleeve that adopt when workpiece to be detected is felt relieved with endoporus.When adopting cylindrical mandrel centering, there are the gap in axle and workpiece.When adopting the centering of tapering axle, the tapering axle is that line contacts with workpiece.Adjusting range is limited when adopting elastic expansion-sleeve centering.
Summary of the invention
The purpose of the utility model will overcome the existing in prior technology deficiency exactly, and the detent mechanism at a kind of automatic capturing center is provided.
For realizing above-mentioned purpose, the detent mechanism at the automatic capturing center that the utility model designed comprises:
One axle, said axle comprise successively reduced diameter section, the enlarged diameter section that connects and be provided with externally threaded thread segment,
One base plate offers the bottom plate hole that the reduced diameter section cylindrical with axle is slidingly matched on the said base plate, the reduced diameter section of said axle stretches out the outer part of bottom plate hole and is provided with draw-in groove,
One circlip, said circlip are enclosed within on the draw-in groove of axle,
One skewed slot nut; Coaxial being arranged on outside the said axle of endoporus that said skewed slot nut is provided with through its center; The epimere of said skewed slot nut inner hole is the screwed hole with the thread segment matched in clearance of axle; The cylindrical hole that the hypomere of said skewed slot nut inner hole is slidingly matched for the enlarged diameter section cylindrical with axle, said skewed slot nut is uniformly distributed with a plurality of skewed slots along the circumference
A plurality of slide blocks, said slide block are embedded in the said skewed slot, with the endoporus of said skewed slot nut tensioner workpiece to be detected,
One supporting seat, said supporting seat is fixed on the base plate, and coaxial being arranged on outside the said skewed slot nut, is uniformly distributed with the kidney slot that a plurality of restriction slide blocks move up and down on the sidewall of said supporting seat along the circumference,
One end cap, said end cap is with the coaxial setting of said axle and be fixed on the supporting seat, and said end cap is positioned on the skewed slot nut,
One compression spring, said compression spring housing is on said axle, and the bottom surface of the upper end of said compression spring and skewed slot nut offsets, and the lower end of said compression spring and the end face of base plate offset.
Preferably, the upper end of the thread segment of said axle is provided with handwheel.
Preferably, the dovetail groove of the skewed slot of said skewed slot nut for matching with slide block, the inclined-plane of the skewed slot of said skewed slot nut becomes the α angle with its center line.
Preferably; Said slide block is provided with the dovetail that cooperates with the swallow-tail form gap of bevel; Be provided with the waist shape platform identical with the dovetail opposite end on the slide block with the kidney slot shape of supporting seat; The surface of said waist shape platform becomes the β angle with the dovetail bottom surface, and said waist shape platform lateral vertical is provided with the contacted arc surface of kidney slot inwall with supporting seat.
Preferably, said skewed slot nut is uniformly distributed with three skewed slots along the circumference, and three slide blocks are embedded in respectively in the said skewed slot, is uniformly distributed with the kidney slot that three restriction slide blocks move up and down on the sidewall of said supporting seat along the circumference.
Preferably, formed angle=β=7～10 °.
The beneficial effect of the utility model is: the detent mechanism of the utility model utilizes screw thread pair driving sliding block tensioner workpiece endoporus to be detected; Reach automatic capturing workpiece centre to be detected, eliminate the purpose in workpiece endoporus to be detected and position point gap, improved accuracy of detection; And slide block is that face contacts with the workpiece endoporus, and adjusting range is big.
Description of drawings
Fig. 1 is the structural representation of the detent mechanism at the utility model automatic capturing center.
Fig. 2 is the structural representation of A-A among Fig. 1.
Fig. 3 is the structural representation of Fig. 1 central shaft.
Fig. 4 is the structural representation of supporting seat among Fig. 1.
Fig. 5 is the perspective view of skewed slot nut among Fig. 1.
Fig. 6 is the cross-sectional view of skewed slot nut among Fig. 1.
Fig. 7 is the perspective view of slide block among Fig. 1.
Fig. 8 is the structural representation of facing of slide block among Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to describe in detail.
The detent mechanism at automatic capturing center shown in Fig. 1～3; Comprise axle 8, base plate 2, circlip 1, skewed slot nut 6, a plurality of slide block 5, supporting seat 3, end cap 7 and compression spring 4; Axle 8 comprises reduced diameter section 8.1, the enlarged diameter section 8.2 that connects successively and is provided with externally threaded thread segment 8.3 that the upper end of the thread segment 8.3 of axle 8 is provided with handwheel 9.Offer the bottom plate hole 2.1 that reduced diameter section 8.1 cylindricals with axle 8 are slidingly matched on the base plate 2.The reduced diameter section 8.1 of axle 8 stretches out bottom plate hole 2.1 outer parts and is provided with draw-in groove 8.1.1, and circlip 1 is enclosed within on the draw-in groove 8.1.1 of axle 8.
In conjunction with Fig. 1, Fig. 5 and Fig. 6; Coaxial being arranged on outside the axle 8 of endoporus that skewed slot nut 6 is provided with through its center; The epimere of skewed slot nut 6 endoporus is the screwed hole 6.1 with thread segment 8.3 matched in clearance of axle 8, the cylindrical hole 6.2 that the hypomere of skewed slot nut 6 endoporus is slidingly matched for enlarged diameter section 8.2 cylindricals with axle 8.Skewed slot nut 6 is uniformly distributed with three skewed slots 6.3 along the circumference.The dovetail groove of skewed slot 6.3 for matching with slide block 5 of skewed slot nut 6, the inclined-plane of the skewed slot 6.3 of said skewed slot nut 6 becomes the α angle with its center line.
Combine Fig. 7 and Fig. 8 again, three slide blocks 5 are embedded in respectively in the skewed slot 6.3, with the endoporus of skewed slot nut 6 tensioners workpiece 10 to be detected.Slide block 5 is provided with the dovetail 5.1 with swallow-tail form skewed slot 6.3 matched in clearance; Be provided with the waist shape platform 5.2 identical with dovetail 5.1 opposite ends on the slide block 5 with kidney slot 3.1 shapes of supporting seat 3; The surface of waist shape platform 5.2 becomes the β angle with dovetail 5.1 bottom surfaces, and said waist shape platform 5.2 lateral vertical are provided with the contacted arc surface 5.3 of kidney slot 3.1 inwalls with supporting seat 3.
The inclined-plane of skewed slot 6.3 equates with formed β angle, dovetail 5.1 bottom surfaces with the surface of waist shape platform 5.2 with the formed α of its center line angle, α=β=7～10 °.
In conjunction with Fig. 1 and Fig. 4, supporting seat 3 is fixed on the base plate 2, and coaxial being arranged on outside the skewed slot nut 6, is uniformly distributed with the kidney slot 3.1 that a plurality of restriction slide blocks 5 move up and down on the sidewall of supporting seat 3 along the circumference.
The course of work of the utility model is following:
The reduced diameter section 8.1 of axle 8 is slidingly matched with the bottom plate hole 2.1 no gaps of base plate 2, guarantees that workpiece to be detected 10 centers are coaxial with bottom plate hole 2.1.Cylindrical hole 6.2 in the skewed slot nut 6 does not have the gap with enlarged diameter section 8.2 cylindricals of axle 8 and is slidingly matched, and plays the centering effect; The big matched in clearance of thread segment 8.3 external screw threads of its screwed hole 6.1 and axle 8, transferring power; The skewed slot 6.3 of three swallow-tail forms that become the α angle with axially bored line in it and be uniformly distributed along the circumference, lift such as when guaranteeing motion.The dovetail 5.1 on the slide block 5 and skewed slot 6.3 matched in clearance of the swallow-tail form of skewed slot nut 6 play transferring power, converting motion direction; Slide block 5 bottom surfaces also become the α angle with its cylindrical bus, lift such as when guaranteeing motion.Three kidney slots, the 3.1 restriction slide blocks 5 that are uniformly distributed along the circumference in the supporting seat 3 move up and down.
After pressing the structure installation of Fig. 1, manually screw handwheel 9 and let slide block 5 be in radially minimum state; The cylindrical of workpiece 10 to be detected along handwheel 9 is placed on the base plate 2; Oppositely screw handwheel 9 again, drive axle 8 rotations, because apotting spindle 8 is located up and down by circlip 1; So the screw thread pair driving skewed slot nut 6 that is formed by axle 8 and skewed slot nut 6 moves up; By skewed slot 6.3 driving sliding block 5 of the swallow-tail form of skewed slot nut 6 constant speed movement radially, the endoporus of tensioner workpiece 10 to be detected reaches that no gap cooperates and the purpose of automatic capturing workpiece centre.
Adopting the detent mechanism adjusting range of the utility model is ∮ D 1～∮ D2, and computing formula is D2-D1=2 * (H1+H2) * tan α
Wherein, D1: the minimum diameter of workpiece to be detected; D2: the maximum inner diameter of workpiece to be detected; H1: this detent mechanism swelling workpiece rear end cap bottom surface is to the distance of skewed slot nut end face; H2: the screwed hole bottom surface of skewed slot nut is to the distance of the enlarged diameter section end face of axle behind this detent mechanism swelling workpiece; α: the inclination angle of inclined plane of the skewed slot of skewed slot nut.
Claims (6)
1. the detent mechanism at an automatic capturing center is characterized in that: comprise
One axle (8), said axle (8) comprise successively reduced diameter section (8.1), the enlarged diameter section (8.2) that connects and be provided with externally threaded thread segment (8.3),
One base plate (2); Offer the bottom plate hole (2.1) that reduced diameter section (8.1) cylindrical with axle (8) is slidingly matched on the said base plate (2); The reduced diameter section (8.1) of said axle (8) stretches out the outer part of bottom plate hole (2.1) and is provided with draw-in groove (8.1.1)
One circlip (1), said circlip (1) are enclosed within on the draw-in groove (8.1.1) of axle (8),
One skewed slot nut (6); Coaxial being arranged on outside the said axle (8) of endoporus that said skewed slot nut (6) is provided with through its center; The epimere of said skewed slot nut (6) endoporus is the screwed hole (6.1) with thread segment (8.3) matched in clearance of axle (8); The cylindrical hole (6.2) that the hypomere of said skewed slot nut (6) endoporus is slidingly matched for enlarged diameter section (8.2) cylindrical with axle (8), said skewed slot nut (6) is uniformly distributed with a plurality of skewed slots (6.3) along the circumference
A plurality of slide blocks (5), said slide block (5) are embedded in the said skewed slot (6.3), with the endoporus of said skewed slot nut (6) tensioner workpiece to be detected (10),
One supporting seat (3), said supporting seat (3) is fixed on the base plate (2), and coaxial being arranged on outside the said skewed slot nut (6), is uniformly distributed with the kidney slot (3.1) that a plurality of restriction slide blocks (5) move up and down on the sidewall of said supporting seat (3) along the circumference,
One end cap (7), said end cap (7) is with the coaxial setting of said axle (8) and be fixed on the supporting seat (3), and said end cap (7) is positioned on the skewed slot nut (6),
One compression spring (4), said compression spring (4) is enclosed within on the said axle (8), and the bottom surface of the upper end of said compression spring (4) and skewed slot nut (6) offsets, and the end face of the lower end of said compression spring (4) and base plate (2) offsets.
2. the detent mechanism at automatic capturing according to claim 1 center is characterized in that: the upper end of the thread segment (8.3) of said axle (8) is provided with handwheel (9).
3. the detent mechanism at automatic capturing according to claim 1 center; It is characterized in that: the dovetail groove of the skewed slot (6.3) of said skewed slot nut (6) for matching with slide block (5), the inclined-plane of the skewed slot (6.3) of said skewed slot nut (6) becomes the α angle with its center line.
4. the detent mechanism at automatic capturing according to claim 3 center; It is characterized in that: said slide block (5) is provided with the dovetail (5.1) with swallow-tail form skewed slot (6.3) matched in clearance; Slide block (5) is gone up and to be provided with dovetail (5.1) opposite end and the identical waist shape platform (5.2) of kidney slot (3.1) shape of supporting seat (3); The surface of said waist shape platform (5.2) becomes the β angle with dovetail (5.1) bottom surface, and said waist shape platform (5.2) lateral vertical is provided with the contacted arc surface of kidney slot (3.1) inwall (5.3) with supporting seat (3).
5. the detent mechanism at automatic capturing according to claim 1 center; It is characterized in that: said skewed slot nut (6) is uniformly distributed with three skewed slots (6.3) along the circumference; Three slide blocks (5) are embedded in respectively in the said skewed slot (6.3), and said supporting seat (3) is uniformly distributed with the kidney slot (3.1) that three restriction slide blocks (5) move up and down along the circumference.
6. the detent mechanism at automatic capturing according to claim 4 center is characterized in that: formed angle=β=7 ~ 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205373645U CN202448058U (en) | 2011-12-20 | 2011-12-20 | Positioning mechanism for automatic centering center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205373645U CN202448058U (en) | 2011-12-20 | 2011-12-20 | Positioning mechanism for automatic centering center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202448058U true CN202448058U (en) | 2012-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205373645U Expired - Lifetime CN202448058U (en) | 2011-12-20 | 2011-12-20 | Positioning mechanism for automatic centering center |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202448058U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273446A (en) * | 2013-06-19 | 2013-09-04 | 冯文杰 | Screw nut combined positioning device |
| CN107363596A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | A kind of manual secondary support means |
| CN110434627A (en) * | 2019-08-26 | 2019-11-12 | 东莞市晋诚机械有限公司 | A kind of anti-scratch centering machine |
| CN110449931A (en) * | 2019-04-11 | 2019-11-15 | 齐齐哈尔雷昂重工机械制造有限责任公司 | A kind of inner hole of workpiece automatic positioning clamp system |
| CN112320571A (en) * | 2020-10-26 | 2021-02-05 | 南通职业大学 | Special tool for internal expansion type hoisting of motor stator core and working method thereof |
| CN113070698A (en) * | 2021-03-31 | 2021-07-06 | 保隆(安徽)汽车配件有限公司 | Self-centering multi-shaft linkage type internal expansion clamping mechanism and clamping method |
| CN114872239A (en) * | 2022-05-24 | 2022-08-09 | 江西迪亚特自动化设备有限公司 | Tire mould laser cleaning equipment |
-
2011
- 2011-12-20 CN CN2011205373645U patent/CN202448058U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273446A (en) * | 2013-06-19 | 2013-09-04 | 冯文杰 | Screw nut combined positioning device |
| CN107363596A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | A kind of manual secondary support means |
| CN110449931A (en) * | 2019-04-11 | 2019-11-15 | 齐齐哈尔雷昂重工机械制造有限责任公司 | A kind of inner hole of workpiece automatic positioning clamp system |
| CN110449931B (en) * | 2019-04-11 | 2024-05-24 | 齐齐哈尔雷昂重工机械制造有限责任公司 | Automatic positioning and clamping mechanism for inner hole of workpiece |
| CN110434627A (en) * | 2019-08-26 | 2019-11-12 | 东莞市晋诚机械有限公司 | A kind of anti-scratch centering machine |
| CN112320571A (en) * | 2020-10-26 | 2021-02-05 | 南通职业大学 | Special tool for internal expansion type hoisting of motor stator core and working method thereof |
| CN112320571B (en) * | 2020-10-26 | 2023-04-28 | 南通职业大学 | Motor stator core internal expansion type lifting special tool and working method thereof |
| CN113070698A (en) * | 2021-03-31 | 2021-07-06 | 保隆(安徽)汽车配件有限公司 | Self-centering multi-shaft linkage type internal expansion clamping mechanism and clamping method |
| CN113070698B (en) * | 2021-03-31 | 2022-06-03 | 保隆(安徽)汽车配件有限公司 | Self-centering multi-shaft linkage type internal expansion clamping mechanism and clamping method |
| CN114872239A (en) * | 2022-05-24 | 2022-08-09 | 江西迪亚特自动化设备有限公司 | Tire mould laser cleaning equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120926 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211224 Address after: 442002 No. 138, Checheng West Road, Zhangwan District, Shiyan City, Hubei Province Patentee after: Dongfeng auto parts (Group) Co.,Ltd. blade measuring tool branch Patentee after: DONGFENG MOTER Co.,Ltd. Address before: No.10, Dongfeng Avenue, economic and Technological Development Zone, Wuhan, Hubei Province, 430056 Patentee before: DONGFENG MOTER Co.,Ltd. |