CN203265675U - Expansive type central spindle for machining sleeve with long and thin wall - Google Patents
Expansive type central spindle for machining sleeve with long and thin wall Download PDFInfo
- Publication number
- CN203265675U CN203265675U CN 201320233115 CN201320233115U CN203265675U CN 203265675 U CN203265675 U CN 203265675U CN 201320233115 CN201320233115 CN 201320233115 CN 201320233115 U CN201320233115 U CN 201320233115U CN 203265675 U CN203265675 U CN 203265675U
- Authority
- CN
- China
- Prior art keywords
- central spindle
- machining
- mandrel body
- thin
- wedge
- 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 - Lifetime
Links
Images
Abstract
The utility model discloses an expansive type central spindle for machining a sleeve with a long and thin wall. The expansive type central spindle comprises a central spindle body. A plurality of sets of webs are fixedly and coaxially installed in the middle section of the central spindle body. A front-and-back through slant groove is longitudinally formed in the outer circle of each web along the central spindle body. A slant wedge is arranged in each through slant groove. A stop disc is installed at the large end of each slant wedge. A backing ring is arranged on the outer end face of each stop disc. The stop discs and the backing rings are both installed on the outer circles of the two ends of the central spindle body in a sleeved mode. A circular nut is arranged on the outer end face of each backing ring. Each circular nut is connected to the threaded section of the outer circle of the central spindle body in a sleeved mode through threads. A circle of axial bolt holes are formed in each circular nut. Each circular nut inwards abuts against and is in contact with each backing ring through a circle of abutting-against bolts. The expansive type central spindle for machining the sleeve with the long and thin wall is simple in structure, solves the problem that sleeve-class parts with long and thin walls are prone to deforming and high in rejection rate in turning and grinding machining, reduces the machining difficulty and improves the machining quality.
Description
Technical field
The utility model belongs to mechanical equipment technical field, relates to a kind of tyre expansion mandrel be used to adding section chief's thin-wall sleeve.
Background technology
In the manufacture process of plant equipment; often can run into the thin-wall sleeve parts that certain required precision is arranged of some linings and so on; its size of these thin-wall sleeve parts and workpiece material are various; its internal diameter and external diameter have stricter dimensional requirement; and internal diameter and external diameter have the axiality requirement, usually will by turning on lathe and on grinding machine grinding just can reach size and fineness requirement.
At present, for shorter thin-wall sleeve parts by staying the processing of the method clamping such as chuck, but for the long thin-wall sleeve parts of length because the workpiece rigidity is very poor, also be easy to distortion even stay chuck to press from both sides the top workpiece in process, cause percent defective very high, therefore for the car mill processing of this long thin-wall sleeve parts, become plant equipment and make the technological difficulties that one, field urgent need solves.
The utility model content
The purpose of this utility model is to provide a kind of tyre expansion mandrel be used to adding section chief's thin-wall sleeve, solved in prior art yielding in process for long thin-wall sleeve parts, the problem that percent defective is high.
The technical scheme that the utility model adopts is, a kind of tyre expansion mandrel be used to adding section chief's thin-wall sleeve, comprise the mandrel body, coaxial being installed with in mandrel body stage casing organized webs more, and the skewed slot that each web cylindrical connects before and after vertically having along the mandrel body is provided with a wedge in the skewed slot of each perforation, the stub end of all wedges is equipped with a block plate, the block plate outer face is provided with gasket ring, and block plate and gasket ring all are sleeved on the cylindrical of mandrel body, and the gasket ring outer face is provided with round nut.
The beneficial effects of the utility model are, have solved long thin-wall sleeve parts yielding in the processing of car mill, and the problem that percent defective is high has reduced difficulty of processing, has improved crudy.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of the utility model device;
Fig. 2 is the A-A cross section structure schematic diagram in Fig. 1;
Fig. 3 is the structural representation of the mandrel body 6 in the utility model device;
Fig. 4 is the left side view of Fig. 3;
Fig. 5 is the structural representation of the wedge 7 in the utility model device;
Fig. 6 is that the P of Fig. 5 is to view;
Fig. 7 is the mounting structure schematic diagram of the external cylindrical surface of processing wedge 7;
Fig. 8 is the B-B schematic cross-section in Fig. 7.
In figure, 1. insert stifled, 2. puller bolt, 3. round nut, 4. gasket ring, 5. block plate, 6. mandrel body, 7. wedge, 8. workpiece, 9. web, 10. clip, 11. hold out against screw.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
as Fig. 1 and Fig. 2, the structure of the utility model device is, comprise mandrel body 6, coaxial being installed with in mandrel body 6 stage casings organized webs 9 more, the skewed slot that each web 9 cylindricals connect before and after vertically having along mandrel body 6, be provided with a wedge 7 in the skewed slot of each perforation, the stub end of all wedges 7 (or little head end) is equipped with a block plate 5, block plate 5 outer faces are provided with gasket ring 4, block plate 5 and gasket ring 4 all are sleeved on the cylindrical of mandrel body 6 one ends (or two ends), gasket ring 4 outer faces are provided with round nut 3, round nut 3 is connected on mandrel body 6 cylindrical thread segments by thread bush, round nut 3 is provided with an axial bolt hole of circle, round nut 3 inwardly holds out against with gasket ring 4 by a circle puller bolt 2 and contacts, the two ends center hole of mandrel body 6 all is equipped with one and inserts stifled 1.
The operation principle of the utility model device is, (embodiment in institute's drawings attached is 10 to be evenly equipped with several skewed slots on mandrel body 6, also can be the numbers such as 4,6,8,12, determine as required), a wedge 7(embodiment is housed on each skewed slot is furnished with 10 wedges 7), wedge 7 is under the impetus of round nut 3, gasket ring 4 and block plate 5 that left end is installed, slide in the skewed slot of mandrel body 6, make the whole cylindrical swell of wedge 7, the endoporus of the workpiece 8 that stretching need to be processed, realization clamps the purpose of workpiece to be machined 8.Gasket ring 4 and block plate 5 are the matched in clearance of H7/g6 with mandrel body 6, its effect is that the screwing force with round nut 3 is delivered on each wedge 7 uniformly, make all wedge 7 synchronizing movings realize swell top tight workpiece 8, the effect of puller bolt 2 is to tighten after completing round nut 3 is fastening again, plays effect locking and that reinforce.The interference fits of H7/k6 is adopted at two ends through the insertion stifled 1 of quenching and mandrel body 6, the intensity of center hole when its effect improves car mill makes it can Fast Wearing and reduce the machining accuracy of workpiece.
As Fig. 3 and Fig. 4, the circumferential surface of round steel (being mandrel) vertically uniform welding a plurality of webs 9 are arranged, be integrally formed the mandrel body 6 of structure, can save the round steel material like this, reduce costs, radially uniformly on each web 9 be processed with the skewed slot that a plurality of width are B, every row's skewed slot vertically tilts to connect successively, the perforation gradient of skewed slot is 2 °-5 °, and the tolerance of the width B of skewed slot is chosen H8.
As Fig. 5 and Fig. 6, the structure of wedge 7 is, the gradient of the skewed slot that connects on the gradient of wedge 7 lower inclined planes and mandrel body 6 is identical, on the width b of wedge 7 and mandrel body 6 the width B nominal size of skewed slot just as, tolerance is chosen f7, the outer arc radius R(diameter ￠ of wedge 7) should be consistent with the endoporus of workpiece to be machined 8, its length L should be greater than the length L 1 of workpiece to be machined 8.
H1 is the height of wedge 7 little head ends, and h2 is that wedge 7 microcephalies hold the bottom cusp to the distance of the mandrel centre of gyration, h1+h2=R=￠/2.
As Fig. 7 and Fig. 8, for processing wedge 7 external cylindrical surface the time the installment state schematic diagram, in order to improve the machining accuracy of wedge 7 external cylindrical surfaces, after its lap of wedge 7 machines, wedge 7 is arranged on the external cylindrical surface processing of completing at last again wedge 7 in skewed slot on mandrel body 6.Add man-hour, need to increase again on the right side of mandrel body 6 (being the little head end of wedge 7) a cover puller bolt 2, round nut 3, gasket ring 4, block plate 5, be used for the axial location of wedge 7.during installation, first with the round nut 3 on right side shown in Figure 7, gasket ring 4, block plate 5 is adjusted to correct position, then in each wedge 7 being respectively charged into corresponding skewed slot on mandrel body 6 from left side shown in Figure 7, utilize the round nut 3 in left side, gasket ring 4, block plate 5 axial grip wedges 7, in order to eliminate the gap between wedge 7 and mandrel body 6 inclined-planes, periphery correspondence position at each web 9 is provided with clip 10, utilize a circle to hold out against the inwardly even all wedges 7 of banding of screw 11, carry out in car mill process, by the axial installation site of vibration clip 10 successively, realize the fine finishining of all wedges 7 whole outer round surface, the face of cylinder precision that processes like this significantly improves, when being used for contacting workpiece 8, well guaranteed mutual installation accuracy.
The utility model apparatus structure is simple, has solved long thin-wall sleeve parts yielding in the processing of car mill, and the problem that percent defective is high has reduced difficulty of processing, has improved crudy.
Claims (4)
1. tyre expansion mandrel that is used for adding section chief's thin-wall sleeve, its characteristics are: comprise mandrel body (6), coaxial being installed with in mandrel body (6) stage casing organized webs (9) more, the skewed slot that each web (9) cylindrical connects before and after vertically having along mandrel body (6), be provided with a wedge (7) in the skewed slot of each perforation, the stub end of all wedges (7) is equipped with a block plate (5), block plate (5) outer face is provided with gasket ring (4), block plate (5) and gasket ring (4) all are sleeved on the cylindrical at mandrel body (6) two ends, gasket ring (4) outer face is provided with round nut (3).
2. the tyre expansion mandrel be used to adding section chief's thin-wall sleeve according to claim 1, its characteristics are: the perforation gradient of described skewed slot is 2 °-5 °.
3. the tyre expansion mandrel be used to adding section chief's thin-wall sleeve according to claim 1, its characteristics are: the two ends center hole of described mandrel body (6) all is equipped with one and inserts stifled (1).
4. the tyre expansion mandrel be used to adding section chief's thin-wall sleeve according to claim 1, its characteristics are: described round nut (3) is connected on mandrel body (6) cylindrical thread segment by thread bush, round nut (3) is provided with an axial bolt hole of circle, and round nut (3) inwardly holds out against with gasket ring (4) by a circle puller bolt (2) and contacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320233115 CN203265675U (en) | 2013-05-02 | 2013-05-02 | Expansive type central spindle for machining sleeve with long and thin wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320233115 CN203265675U (en) | 2013-05-02 | 2013-05-02 | Expansive type central spindle for machining sleeve with long and thin wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203265675U true CN203265675U (en) | 2013-11-06 |
Family
ID=49496168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320233115 Expired - Lifetime CN203265675U (en) | 2013-05-02 | 2013-05-02 | Expansive type central spindle for machining sleeve with long and thin wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203265675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286323A (en) * | 2013-05-02 | 2013-09-11 | 中冶陕压重工设备有限公司 | Method for processing long thin-walled sleeve parts by utilizing tyre-expansion type mandrel |
| CN109719317A (en) * | 2018-12-31 | 2019-05-07 | 保定向阳航空精密机械有限公司 | A kind of self-centering disk mandrel of fluid pressure type |
-
2013
- 2013-05-02 CN CN 201320233115 patent/CN203265675U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103286323A (en) * | 2013-05-02 | 2013-09-11 | 中冶陕压重工设备有限公司 | Method for processing long thin-walled sleeve parts by utilizing tyre-expansion type mandrel |
| CN103286323B (en) * | 2013-05-02 | 2015-06-24 | 中冶陕压重工设备有限公司 | Method for processing long thin-walled sleeve parts by utilizing tyre-expansion type mandrel |
| CN109719317A (en) * | 2018-12-31 | 2019-05-07 | 保定向阳航空精密机械有限公司 | A kind of self-centering disk mandrel of fluid pressure type |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103286323B (en) | Method for processing long thin-walled sleeve parts by utilizing tyre-expansion type mandrel | |
| CN204603354U (en) | Thin-walled fixture for processing excircle of barrel-shaped parts | |
| CN101708562B (en) | Equipment and process for manufacturing burglarproof bolt L-shaped groove | |
| CN103419051A (en) | Thin-wall sleeve inner hole finish machining clamp and inner hole machining method | |
| CN201988972U (en) | Turning fixture of thin-wall sleeve | |
| CN102049695A (en) | Processing method and technological equipment for cylindrical thin and long thin-walled workpiece | |
| CN104439362A (en) | Expansion fixture suitable for blank surfaces | |
| CN105515299A (en) | Overlying tool for large motor stator iron core | |
| CN102921983A (en) | Internal expanding type clamp device | |
| CN203390328U (en) | Gear shaving clamp allowing rapid replacement | |
| CN201645173U (en) | Elastic chuck composite tooling for turning machine | |
| CN101367130A (en) | Overlength straight pipeline member cutting method | |
| CN203265675U (en) | Expansive type central spindle for machining sleeve with long and thin wall | |
| CN203804344U (en) | Non-backlash centering auto-compensation positioning device | |
| CN106346286A (en) | Sphere type part turning installing and clamping tooling | |
| CN202462132U (en) | Tooling for coping and clamping outer ring of back-up roll bearing | |
| CN202655942U (en) | Machining tool of thin-wall thread bushing | |
| CN202088012U (en) | Mechanical clamping spring collet for holes | |
| CN111496485A (en) | Machining deformation control process for 4J32 material thin-wall ring part | |
| CN208146951U (en) | A kind of symmetrical bikini expanding arbor fixture | |
| CN106826558A (en) | One kind folder peripheral milling inner hole device and its application method | |
| CN206009896U (en) | A kind of fixture of processing thin-wall part | |
| CN203738587U (en) | Guide roller machining clamp | |
| CN202894387U (en) | Inner-expansion clamping device | |
| CN208358351U (en) | A kind of Novel special-shaped key arc surface workpiece machining clamp |
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: 20131106 |