CN204353505U - Polyurethane expansion sleeve fixture is used in thin-wall part processing - Google Patents
Polyurethane expansion sleeve fixture is used in thin-wall part processing Download PDFInfo
- Publication number
- CN204353505U CN204353505U CN201420798834.7U CN201420798834U CN204353505U CN 204353505 U CN204353505 U CN 204353505U CN 201420798834 U CN201420798834 U CN 201420798834U CN 204353505 U CN204353505 U CN 204353505U
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- thin
- polyurethane
- wall part
- ringfeder
- guiding collar
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Abstract
The utility model discloses a kind of thin-wall part processing polyurethane expansion sleeve fixture, comprise the polyurethane ringfeder of the ring-type of going here and there successively on pull bar, guiding collar and band shoulder nut, the cylindrical of polyurethane ringfeder and thin-wall part endoporus are matched in clearance, guiding collar is against on polyurethane ringfeder outer face, the endoporus of polyurethane ringfeder and pull bar are interference fit, guiding collar cylindrical and thin-wall part endoporus are matched in clearance, and band shoulder nut thread is connected to pull bar outer end, and its shoulder is against on guiding collar.The utility model structure is simple, convenient and practical.
Description
Technical field
The utility model relates to turning attachment, is specifically related to a kind of thin-wall part processing polyurethane expansion sleeve fixture.
Background technology
Thin-wall part is because have lightweight, feature such as saving material, compact conformation etc., and thin-wall part is applied in each industrial department increasingly extensively.But the processing of thin-wall part is more thorny, reason is that thin-wall part poor rigidity, intensity are weak, and the as easy as rolling off a log distortion of work in-process, not easily ensures the crudy of part.
Current machining industry is processing thin-walled time, normally first rough turn endoporus, and then the ringfeder using spring steel to make fixes thin-wall part endoporus, and then the cylindrical of processing thin-walled, require that roundness of external circle ensures within 0.01mm, but after machining; when thin-wall part does not take off from spring steel ringfeder; detect thin-wall part roundness of external circle and meet processing request; but after thin-wall part is taken off from spring steel ringfeder; thin-wall part deforms, and now detects thin-wall part roundness of external circle at 0.07mm-0.15mm, nonconforming.Use spring steel ringfeder cannot ensure thin-wall part Excircle machining precision, trace it to its cause, during spring steel ringfeder clamping thin-wall part, spring steel ringfeder is only clamped one section of thin-wall part inwall, is the local of the thin-wall part of clamping, thin-wall part unbalance stress is caused to produce stress during processing excircles, when thin-wall part is taken off from spring steel ringfeder, the constraint that thin-wall part is subject to disappears, the Stress Release of thin-wall part, deform, cause thin-wall part roundness of external circle nonconforming.
Utility model content
The utility model is intended to provide a kind of thin-wall part processing polyurethane expansion sleeve fixture, to ensure thin-wall part Excircle machining precision.
Patent formula: polyurethane expansion sleeve fixture is used in the thin-wall part processing in this programme, comprise the polyurethane ringfeder of the ring-type of going here and there successively on pull bar, guiding collar and band shoulder nut, the cylindrical of polyurethane ringfeder and thin-wall part endoporus are matched in clearance, guiding collar is against on polyurethane ringfeder outer face, guiding collar cylindrical and thin-wall part endoporus are matched in clearance, band shoulder nut thread is connected to pull bar outer end, and its shoulder is against on guiding collar.
Compared with prior art, the utility model has the advantage of: the polyurethane ringfeder comprising the ring-type of going here and there successively on pull bar, guiding collar and band shoulder nut, the cylindrical of polyurethane ringfeder and thin-wall part endoporus are matched in clearance, guiding collar is against on polyurethane ringfeder outer face, guiding collar cylindrical and thin-wall part endoporus are matched in clearance, band shoulder nut thread is connected to pull bar outer end, its shoulder is against on guiding collar, thin-wall part is enclosed within polyurethane ringfeder, polyurethane ringfeder inner face is against on axle outer face, the outer face of polyurethane ringfeder is fixed by band shoulder nut extruding guiding collar, and interference fit between the endoporus of polyurethane ringfeder and pull bar, when screwing band shoulder nut, polyurethane ringfeder is filled in thin-wall part endoporus equably, make thin-wall part uniform stressed in process, improve thin-wall part machining accuracy, and although spring steel ringfeder machining accuracy is high, but because thin-wall part endoporus is that thin-wall part quenching is rear out rough turn, inner hole wall is very coarse, when this just causes spring steel ringfeder even inflation, thin-wall part deforms under its effect, secondly, the elastic performance of polyurethane ringfeder self makes fixture with adaptive ability, can to the heart while playing cushioning effect, reduces because of clamping, turning and the thin-wall part distortion that brings, again, functional (effect of elastomer to alternate stress shows obvious hysteresis to the absorbing of polyurethane ringfeder.The part energy of External Force Acting is consumed in the interior friction of elastomeric molecule in this course, be transformed into heat energy, this characteristic is called the absorbing performance of material, also referred to as energy absorption or damping capacity), the vibration produced under can absorbing the effect of Tool in Cutting power (particularly radial cutting force), reduce the thin-wall part distortion brought because of vibration, improve the machining accuracy of thin-wall part; In addition, compared with spring steel ringfeder, the structure of polyurethane ringfeder is simple, and handling ease, cost is low.
Further, the endoporus of polyurethane ringfeder and the magnitude of interference of pull bar interference fit are 0.1mm-0.2mm, under guarantee polyurethane ringfeder is squeezed adequately expanded situation, facilitate polyurethane ringfeder to be contained on pull bar.
Further, the cylindrical of polyurethane ringfeder and the gap of thin-wall part endoporus are 0.15mm-0.2mm; thin-wall part is easy to just be contained on polyurethane ringfeder, give polyurethane ringfeder with expansion space simultaneously, make the full thin-wall part endoporus of polyurethane ringfeder uniform filling in expansion process.
Further, guiding collar and pull bar are matched in clearance, and guiding collar machining accuracy is H7, facilitate guiding collar to be contained on pull bar.
Further, guiding collar lateral surface is the conical surface, and the angle of the described conical surface and guiding collar axis is 3 degree, plays guide effect, and the installation being convenient to thin-wall part is fixed.
Further, edges and corners, guiding collar outer end chamfered transition, facilitates thin-wall part to pass guiding collar and is enclosed within polyurethane ringfeder.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model embodiment;
Fig. 2 is hexagonal belt shoulder nut structure schematic diagram;
Fig. 3 is polyurethane ringfeder structural representation;
Fig. 4 is guiding collar structural representation.
Detailed description of the invention
Below by detailed description of the invention, the utility model is described in further detail:
Reference numeral in Figure of description comprises: hexagonal belt shoulder nut 1, heavy stand 11, guiding collar 2, guiding collar side 21, polyurethane ringfeder 3, axle 4, threaded adjusting bore 41, pull bar 5.
Embodiment is substantially as shown in Figures 1 to 4: polyurethane expansion sleeve fixture is used in thin-wall part processing, comprise the polyurethane ringfeder 3 of the ring-type of going here and there successively on pull bar 5, guiding collar 2 and hexagonal belt shoulder nut 1, cylindrical and thin-wall part 6 endoporus of polyurethane ringfeder 3 are matched in clearance, guiding collar 2 is against on polyurethane ringfeder 3 outer face, guiding collar 2 cylindrical and thin-wall part 6 endoporus are matched in clearance, hexagonal belt shoulder nut 1 is threaded in pull bar 5 outer end, its shoulder is against on guiding collar 2, thin-wall part 6 is enclosed within polyurethane ringfeder 3, polyurethane ringfeder 3 inner face is against on axle 4 outer face, the outer face of polyurethane ringfeder 3 extrudes guiding collar 2 by hexagonal belt shoulder nut 1 and is fixed, and interference fit between the endoporus of polyurethane ringfeder 3 and pull bar 5, axle 4 is also provided with threaded adjusting bore 41, is connected with screw in threaded adjusting bore 41, on pull bar 5, correspondence position is provided with groove 51.
When screwing hexagonal belt shoulder nut 1, polyurethane ringfeder 3 is filled in thin-wall part 6 endoporus equably, makes thin-wall part 6 uniform stressed in process, improves thin-wall part 6 machining accuracy; Polyurethane ringfeder 3 absorbing is functional, and (effect of elastomer to alternate stress shows obvious hysteresis.The part energy of External Force Acting is consumed in the interior friction of elastomeric molecule in this course, be transformed into heat energy, this characteristic is called the absorbing performance of material, also referred to as energy absorption or damping capacity), the vibration produced under can absorbing the effect of Tool in Cutting power (particularly radial cutting force), the thin-wall part 6 reducing to bring because of vibration is out of shape, and improves the machining accuracy of thin-wall part 6; Compared with spring steel ringfeder, the structure of polyurethane ringfeder 3 is simple, handling ease, and cost is low; There is heavy stand 11 nut 11 left side to hexagonal belt shoulder, both can reduce working (finishing) area, can prevent again hexagonal belt from takeing on nut 11 and offsets with axle 4 outer face and cannot be moved to the left fastening polyurethane ringfeder 3;
Thin-wall part is of a size of endoporus 82mm, cylindrical 90mm, and cylindrical requires that circularity is within 0.01mm, and polyurethane ringfeder 3 endoporus is 48mm, upper deviation 0.02mm, and without lower deviation, cylindrical is 79.8mm, the endoporus of polyurethane ringfeder 3 and the magnitude of interference of pull bar 5 interference fit are 0.1mm, the cylindrical of polyurethane ringfeder 3 and the gap of thin-wall part 6 endoporus are 0.15mm, guiding collar 2 and pull bar 5 are matched in clearance, the machining accuracy of guiding collar is H7, guiding collar 2 side 21 is outward-dipping, the angle of inclination, one end that size is little is 3 degree, play guide effect, the installation being convenient to thin-wall part 6 is fixed, edges and corners, guiding collar 2 outer end chamfered transition, thin-wall part 6 is facilitated to be enclosed within polyurethane ringfeder 3 through guiding collar 2, aligning screw can be connected in threaded adjusting bore 41, convenient to pull bar 5 pairs of hearts, also prevent pull bar 5 and axle 4 from relatively rotating simultaneously.
Embodiment two:
With embodiment one unlike, the endoporus of polyurethane ringfeder 3 and the magnitude of interference of pull bar 5 interference fit are 0.2mm, and the cylindrical of polyurethane ringfeder 3 and the gap of thin-wall part 6 endoporus are 0.2mm.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.
Claims (6)
1. polyurethane expansion sleeve fixture is used in thin-wall part processing, it is characterized in that, comprise the polyurethane ringfeder of the ring-type of going here and there successively on pull bar, guiding collar and band shoulder nut, the cylindrical of polyurethane ringfeder and thin-wall part endoporus are matched in clearance, guiding collar is against on polyurethane ringfeder outer face, and the endoporus of polyurethane ringfeder and pull bar are interference fit, and guiding collar cylindrical and thin-wall part endoporus are matched in clearance, band shoulder nut thread is connected to pull bar outer end, and its shoulder is against on guiding collar.
2. thin-wall part processing polyurethane expansion sleeve fixture according to claim 1, is characterized in that, the endoporus of polyurethane ringfeder and the magnitude of interference of pull bar interference fit are 0.1mm-0.2mm.
3. thin-wall part processing polyurethane expansion sleeve fixture according to claim 1 and 2, is characterized in that, the cylindrical of polyurethane ringfeder and the gap of thin-wall part endoporus are 0.15mm-0.2mm.
4. thin-wall part processing polyurethane expansion sleeve fixture according to claim 3, it is characterized in that, guiding collar and pull bar are matched in clearance, and the machining accuracy of guiding collar is H7.
5. thin-wall part processing polyurethane expansion sleeve fixture according to claim 4, it is characterized in that, guiding collar lateral surface is the conical surface, and the angle of the described conical surface and guiding collar axis is 3 degree.
6. thin-wall part processing polyurethane expansion sleeve fixture according to claim 5, is characterized in that, edges and corners, guiding collar outer end chamfered transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420798834.7U CN204353505U (en) | 2014-12-17 | 2014-12-17 | Polyurethane expansion sleeve fixture is used in thin-wall part processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420798834.7U CN204353505U (en) | 2014-12-17 | 2014-12-17 | Polyurethane expansion sleeve fixture is used in thin-wall part processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204353505U true CN204353505U (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420798834.7U Expired - Fee Related CN204353505U (en) | 2014-12-17 | 2014-12-17 | Polyurethane expansion sleeve fixture is used in thin-wall part processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204353505U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959638A (en) * | 2015-06-17 | 2015-10-07 | 苏州华冲精密机械有限公司 | Novel clamp for machining thin-wall cylinder part |
| CN105798345A (en) * | 2016-06-01 | 2016-07-27 | 苏州工业职业技术学院 | Automatic fixture for lightly cutting thin-wall ring workpiece |
| CN110539248A (en) * | 2019-09-29 | 2019-12-06 | 苏州微创关节医疗科技有限公司 | polishing head and grinding tool |
-
2014
- 2014-12-17 CN CN201420798834.7U patent/CN204353505U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959638A (en) * | 2015-06-17 | 2015-10-07 | 苏州华冲精密机械有限公司 | Novel clamp for machining thin-wall cylinder part |
| CN105798345A (en) * | 2016-06-01 | 2016-07-27 | 苏州工业职业技术学院 | Automatic fixture for lightly cutting thin-wall ring workpiece |
| CN110539248A (en) * | 2019-09-29 | 2019-12-06 | 苏州微创关节医疗科技有限公司 | polishing head and grinding tool |
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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 |
Granted publication date: 20150527 Termination date: 20151217 |
|
| EXPY | Termination of patent right or utility model |