CN101829963B - Polishing head for inner surface of elongated bend pipe - Google Patents
Polishing head for inner surface of elongated bend pipe Download PDFInfo
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- CN101829963B CN101829963B CN2010101760973A CN201010176097A CN101829963B CN 101829963 B CN101829963 B CN 101829963B CN 2010101760973 A CN2010101760973 A CN 2010101760973A CN 201010176097 A CN201010176097 A CN 201010176097A CN 101829963 B CN101829963 B CN 101829963B
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- ball
- impeller
- rotating shaft
- ball cage
- envelope
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Abstract
The invention discloses a polishing head for the inner surface of an elongated bend pipe, which belongs to the technical field of ultra-precision machining. Uniform polishing is difficultly implemented in the prior art; and the prior art is only suitable for short pipes with a small length-diameter ratio. The polishing head has a traction part and a steering part, wherein the traction part has a minor spherical crown while the steering part has a major spherical crown, the two are jointed to form a ball cage, and the inner part of the ball cage is a ball head chamber; a front rotary pull ring is arranged on the top of the spherical crown of the traction part; a bending hole is reserved on the top of the spherical crown of the steering part; the ball head is a sphere positioned in the ball head chamber and connected with one end of a rotating shaft; the other end of the rotating shaft extends outside the bending hole and is connected with a rear rotary pull ring; the inner surface of an envelope ball is a minor spherical surface, and the curvature radius of the inner surface is equal to that of the spherical surface of the outer surface of the ball cage; a plurality of involute drainage channels are distributed in a radial manner in an impeller, one end port of each drainage channel is positioned on an axial small end of the impeller, while the other end port is positioned on a radial edge of the impeller; the envelope ball is connected with the impeller, axial holes sharing the same axis line and having the same aperture are reserved in the centers of the envelope ball and the impeller, and the axial holes are matched with the rotating shaft; and the inner surface of the envelope ball is in clearance fit with the outer surface of the ball cage.
Description
Technical field
The present invention relates to a kind of polishing head for inner surface of elongated bend pipe, be used polishing fluid,, belong to ultraprecise Machining Technology field polishing processing such as inner surface of elongated bend pipe such as the exhaust pipes of engine.
Background technology
If exhaust pipe of engine rough inner surface, can block because of adhering to greasy dirt, strong vibration appears in air-flow, with very big pressure oscillation and noise, and then initiation engine roughness, power descends, and it is insufficient to burn, black smoke from exhaust, discharge amount of exhaust gas increases, oil consumption increases, and contaminated environment wastes energy on the other hand on the one hand.If cable penetration pipe rough inner surface, the cable sheath that can cause penetrating scratches, and causes electric leakage, short circuit.No matter be the exhaust pipe of engine or cable penetration pipe, all belong to the bigger elongated bend pipe of draw ratio at vpg connection.The existing technology that improves bend pipe inner surface fineness has high-pressure water jet polishing, abrasive water-jet polishing, abrasive Flow polishing etc.But there is the processing blind spot in the difficult uniform polish of realizing of high-pressure water jet polishing and abrasive water-jet polishing; The abrasive Flow polishing is limit because of the machine tooling scope, only is suitable for short and the less pipe fitting of draw ratio, the bend pipe inner surface polishing that inapplicable length and draw ratio are bigger.
Summary of the invention
Bend pipe especially the polishing processing of inner surface of elongated bend pipe be in the ultraprecise Machining Technology field one technical problem to be solved is arranged, in order to realize bend pipe inner surface polishing processing long and that draw ratio is bigger, we have invented a kind of polishing head for inner surface of elongated bend pipe.
Its architectural feature of the present invention's rubbing head is seen shown in Figure 1, and tractive unit 1 is one, and turning part 2 is one, and the two butt joint constitutes a ball cage greater than 1/2nd spherical crown less than 1/2nd spherical crown, and ball cage inside is bulb chamber 3; Preceding rotation draw ring 4 is installed in tractive unit 1 spherical crown top; A bending hole 5 is arranged at 2 spherical crown tops, turning part; Bulb 6 is a spheroid, is arranged in bulb chamber 3, is connected with rotating shaft 7 one ends; Rotating shaft 7 other ends stretch out from bending hole 5, and back rotation draw ring 8 is connected with this end; Envelope ball 9 inner surfaces are the sphere less than 1/2nd, and its radius of curvature equates with ball cage outer surface sphere curvature radius; Impeller 10 inside radially distribute, and several gradually open shape drain passage 11, and other sees Fig. 2, shown in Figure 3, and a port of each drain passage 11 is positioned at the axial small end of impeller 10, and another port is positioned at the radial edges of impeller 10; Envelope ball 9 is connected with impeller 10, and the two center has the axis hole that axis is same, the aperture is identical, and this axis hole cooperates with rotating shaft 7; Envelope ball 9 inner surfaces and ball cage outer surface matched in clearance.
Its technique effect of the present invention is, with rope such as steel wire flexible wires on the rotation draw ring 4 before tying up to rubbing head is drawn in the elongated bend pipe to be processed, and tension simultaneously ties up to the steel wire flexible wires on the back rotation draw ring 8, realizes reach and the location of rubbing head in bend pipe.Polishing fluid is injected in the bend pipe at a high speed, directive impeller 10 axial small ends, enter each drain passage 11, impact impeller 10 rotation at a high speed, simultaneously, the flow direction of polishing fluid is also from axially transferring to radially, be positioned at the port injection of impeller 10 radial edges from drain passage 11, impact, wash away the bend pipe inner surface, polish processing, evenly there is not blind spot in polishing.Move in bend pipe by described steel wire flexible wires control rubbing head simultaneously, run into the turning, under the pulling of the steel wire flexible wires before tying up on the rotation draw ring 4, the ball cage rotates an angle, an angle is rotated in rotating shaft in other words 7 in bending hole 5, continuation pulling envelope ball 9, impeller 10 move ahead, and realize the polishing processing of bend pipe inner surface.The another kind of duty of the present invention's rubbing head is, polishing fluid is full of bend pipe, by the steel wire flexible wires that ties up on the back rotation draw ring 8 rubbing head is drawn in the elongated bend pipe to be processed from bend pipe one end, and at a high speed rubbing head is pulled to the bend pipe other end, polishing fluid reverse impact impeller 10 axial small ends are positioned at the port injection of impeller 10 radial edges through each drain passage 11 from drain passage 11, impact, wash away the bend pipe inner surface, impeller rotates at a high speed simultaneously, realizes polishing processing.By the steel wire flexible wires on the rotation draw ring 4 before tying up to rubbing head is retracted afterwards, repeat said process.
No matter which kind of state, the present invention can both realize the Ultraprecise polished processing of the polishing of inner surface of elongated bend pipe, if bend pipe is longer, the rope lengths of rotation draw ring 4 and back rotation draw ring 8 gets final product before the lengthening tractive.And this rubbing head is simple in structure, cost is low.
Description of drawings
Fig. 1 is the installation diagram of the present invention's polishing head for inner surface of elongated bend pipe, and this figure double as is a Figure of abstract.Fig. 2 is the impeller front view in the present invention's the polishing head for inner surface of elongated bend pipe.Fig. 3 is the impeller left view in the present invention's the polishing head for inner surface of elongated bend pipe.Fig. 4 is preceding rotation draw ring or the back rotation draw ring front view in the present invention's the polishing head for inner surface of elongated bend pipe.Fig. 5 is preceding rotation draw ring or the back rotation draw ring left view in the present invention's the polishing head for inner surface of elongated bend pipe.
The specific embodiment
Specify the present invention's polishing head for inner surface of elongated bend pipe architectural feature below, see shown in Figure 1, tractive unit 1 be one less than 1/2nd spherical crown, turning part 2 be one greater than 1/2nd spherical crown, the two butt joint constitutes a ball cage, with screw 12 tractive unit 1 and turning part 2 is linked together.Ball cage inside is bulb chamber 3, and bulb chamber 3 is shaped as spheroid or polyhedron, and the latter processes easily.Preceding rotation draw ring 4 is installed in tractive unit 1 spherical crown top, realizes this installation by preceding blind nut 13.A bending hole 5 is arranged at 2 spherical crown tops, turning part.Bulb 6 is a spheroid, is arranged in bulb chamber 3, is connected with rotating shaft 7 one ends; Rotating shaft 7 other ends stretch out from bending hole 5, and back rotation draw ring 8 is connected with this end, realizes this installation by back blind nut 14.Preceding rotation draw ring 4 is two identical parts with back rotation draw ring 8, sees Fig. 4, shown in Figure 5.Envelope ball 9 inner surfaces are the sphere less than 1/2nd, and its radius of curvature equates with ball cage outer surface sphere curvature radius.Impeller 10 inside radially distribute, and several gradually open shape drain passage 11, and other sees Fig. 2, shown in Figure 3; A port of each drain passage 11 is positioned at the axial small end of impeller 10, and another port is positioned at the radial edges of impeller 10.Envelope ball 9 is threaded with impeller 10, and the two center has the axis hole that axis is same, the aperture is identical, and this axis hole cooperates with rotating shaft 7.Adopt axial location mechanism that envelope ball 9 and impeller 10 are positioned in the rotating shaft 7, for example adopt packing ring 15 and setscrew nut 16, adapt therewith, rotating shaft 7 connects an end diameter of back rotation draw ring 8 less than rotating shaft 7 axis bodies, and be processed with external screw thread, packing ring 15 overlaps thereon and falls to impeller 10 axis hole end faces, and setscrew nut 16 revolves thereon.Envelope ball 9 inner surfaces and ball cage outer surface matched in clearance.The radial contour of envelope ball 9 is of a size of the radial contour size of rubbing head.This size should be less than elongated bend pipe internal diameter to be processed, in the gap of leaving of rubbing head and bend pipe inner surface, so that rubbing head can smooth and easy mobile and turning in bend pipe.Be s for example for the bend pipe internal diameter
40mm, length are the above elongated bend pipe of 5m, and the radial contour size of rubbing head should be designed to
35～38mm, the distance that promptly preceding rotation draw ring 4 of corresponding rubbing head axial profile size and back, back rotation draw ring 8 encircle between the top is that 58～60m impeller, 10 external diameters are
30mm.
Claims (5)
1. a polishing head for inner surface of elongated bend pipe is characterized in that, tractive unit (1) is a spherical crown less than ball cage 1/2nd, and turning part (2) are spherical crowns greater than ball cage 1/2nd, and the two butt joint constitutes a ball cage, and ball cage inside is bulb chamber (3); Preceding rotation draw ring (4) is installed in tractive unit (1) spherical crown top; A bending hole (5) is arranged at spherical crown top, turning part (2); Bulb (6) is a spheroid, is arranged in bulb chamber (3), is connected with rotating shaft (7) one ends; Rotating shaft (7) other end stretches out from bending hole (5), and back rotation draw ring (8) is connected with this end; Envelope ball (9) inner surface is the sphere less than inner surface sphere area 1/2nd, and its radius of curvature equates with ball cage outer surface sphere curvature radius; Impeller (10) inside radially distributes, and several gradually open shape drain passage (11), and a port of each drain passage (11) is positioned at the axial small end of impeller (10), and another port is positioned at the radial edges of impeller (10); Envelope ball (9) is connected with impeller (10), and the two center has the axis hole that axis is same, the aperture is identical, and this axis hole cooperates with rotating shaft (7); Envelope ball (9) inner surface and ball cage outer surface matched in clearance.
2. rubbing head according to claim 1 is characterized in that, bulb chamber (3) are shaped as spheroid or polyhedron.
3. rubbing head according to claim 1 is characterized in that, preceding rotation draw ring (4) is two identical parts with back rotation draw ring (8).
4. rubbing head according to claim 1 is characterized in that, adopts axial location mechanism that envelope ball (9) and impeller (10) are positioned in the rotating shaft (7).
5. rubbing head according to claim 4, it is characterized in that, described detent mechanism is, rotating shaft (7) connects an end diameter of back rotation draw ring (8) less than rotating shaft (7) axis body, and be processed with external screw thread, packing ring (15) overlaps thereon and falls to impeller (10) axis hole end face, and setscrew nut (16) is threaded onto on the axis body external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101760973A CN101829963B (en) | 2010-05-19 | 2010-05-19 | Polishing head for inner surface of elongated bend pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101760973A CN101829963B (en) | 2010-05-19 | 2010-05-19 | Polishing head for inner surface of elongated bend pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101829963A CN101829963A (en) | 2010-09-15 |
| CN101829963B true CN101829963B (en) | 2011-12-07 |
Family
ID=42714255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101760973A Expired - Fee Related CN101829963B (en) | 2010-05-19 | 2010-05-19 | Polishing head for inner surface of elongated bend pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101829963B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672589B (en) * | 2011-03-14 | 2014-07-16 | 辽阳石化机械设计制造有限公司 | Elbow polishing machine |
| CN102240945B (en) * | 2011-07-06 | 2013-07-03 | 中国兵器工业第二0五研究所 | Pneumatic polishing reshaping device for spherical surface |
| CN103820844B (en) * | 2014-03-03 | 2016-01-06 | 大连理工大学 | A kind of inner surface of elongated bend pipe electropolishing tool-electrode |
| CN107088797A (en) * | 2017-05-15 | 2017-08-25 | 成都亨通兆业精密机械有限公司 | A kind of polishing structure for elbow member inner surface |
| CN107457679A (en) * | 2017-08-28 | 2017-12-12 | 无锡厚发自动化设备有限公司 | A kind of spheroid polishing method |
| CN110877260B (en) * | 2019-11-25 | 2020-12-08 | 徐州聚西廷新型材料科技有限公司 | Plastic product polishing device |
| CN116276605B (en) * | 2023-04-04 | 2023-08-25 | 泰州市金鹰精密铸造有限公司 | Irregular shape return bend surface grinding device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2905321Y (en) * | 2006-05-11 | 2007-05-30 | 襄樊市新兴联机械有限公司 | Ball cage universal junction box grinding head |
| CN201264207Y (en) * | 2008-09-23 | 2009-07-01 | 沈阳理工大学 | High-speed polishing device for solid-state rare-earth metal of diamond film |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09109034A (en) * | 1995-10-12 | 1997-04-28 | Olympus Optical Co Ltd | Inner surface machining tool |
-
2010
- 2010-05-19 CN CN2010101760973A patent/CN101829963B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2905321Y (en) * | 2006-05-11 | 2007-05-30 | 襄樊市新兴联机械有限公司 | Ball cage universal junction box grinding head |
| CN201264207Y (en) * | 2008-09-23 | 2009-07-01 | 沈阳理工大学 | High-speed polishing device for solid-state rare-earth metal of diamond film |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-109034A 1997.04.28 |
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| Publication number | Publication date |
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| CN101829963A (en) | 2010-09-15 |
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Granted publication date: 20111207 Termination date: 20120519 |