CN102225471A - Telescopic type spring centring device - Google Patents
Telescopic type spring centring device Download PDFInfo
- Publication number
- CN102225471A CN102225471A CN 201110138116 CN201110138116A CN102225471A CN 102225471 A CN102225471 A CN 102225471A CN 201110138116 CN201110138116 CN 201110138116 CN 201110138116 A CN201110138116 A CN 201110138116A CN 102225471 A CN102225471 A CN 102225471A
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- China
- Prior art keywords
- neck bush
- table top
- bearing
- overcoat
- inner core
- 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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Abstract
The invention discloses a telescopic type spring centring device which comprises a jacket, an inner lining, an inner centre and a strong spring, wherein the strong spring is in a compressed state, and the inner centre has a certain telescopic amount under pressure action. In the invention, the centre can be used for overcoming the problem that the centre is blocked or even damaged due to expansion caused by heat and contraction caused by cold when surfacing is carried out on a workpiece.
Description
Technical field
The present invention relates to a kind of clamping device, particularly a kind of telescopic spring center device.
Background technology
Axle class welding part is added man-hour, the axial workpiece clamping is on similar engine lathe, one end is clipped on the head of a bed chuck, and the other end withstands with the tailstock tool tail centre, and workpiece is in rotary course, heat with liquefied gas below the workpiece, between guaranteeing that workpiece temperature keeps 380 ℃-400 ℃, surface of the work just can carry out built-up welding, after workpiece is heated, will inevitably expand with heat and contract with cold, usually the workpiece heating is 100 ℃, and the workpiece thermal expansion amount is 0.1 millimeter, when being heated to 400 ℃, swell increment is 0.4 millimeter, since workpiece one end chuck card jail, jail, the top top of the other end, and swell increment is extended to two ends, often cause tail centre stuck or fracture, cause and to process.
Summary of the invention
Because of the effect of workpiece heat expansion causes the top stuck or problem that fractures easily, provide a kind of a kind of telescopic spring center device that can solve foregoing problems during the welding that the objective of the invention is to exist at the existing Finial device described in the background technology.
The technical scheme that can realize goal of the invention of the present invention is as follows:
A kind of telescopic spring center device, it comprises overcoat, neck bush and inner core are top, put outward and be formed with first table top, put first table top left side outward and be the overcoat head, the first table top right side is outer sleeved rod portion, neck bush is arranged in the overcoat, first table top left side is formed with second table top on neck bush, second table top left side is the neck bush head, the second table top right side is the liner sleeved rod portion, described inner core is top to comprise top bar portion, top head and conical top tip, head is cylindrical, its outer surface is provided with convex surface, clutch shaft bearing is set on the convex surface, between the convex surface right side and second table top plain thrust bearing is set, the convex surface left side is provided with the external screw thread nut, the external screw thread nut and the screw-internal thread fit neck bush left end, neck bush left end outer surface is provided with spacing convex surface, between spacing convex surface and described first table top, brute spring is set, the overcoat left side is provided with the neck bush locating part, the top bar portion right-hand member of inner core is provided with second bearing, and the second bearing right side is provided with the bearing stop nut.
For the neck bush right-hand member is formed sealing; the bar portion top to inner core forms protection, and the top bar portion right side of described inner core is provided with interior swivel nut, the bar portion right side matched in clearance that interior swivel nut and inner core are top; interior swivel nut is arranged in the neck bush, and interior swivel nut and neck bush pass through threaded engagement.
For neck bush is played position-limiting action, the elastic force effect because of brute spring of preventing makes neck bush and inner core is top spins off from the overcoat left end, described liner sleeved rod portion right-hand member arranged outside has external thread sleeve, external thread sleeve is arranged at the neck bush outside, pass through threaded engagement with liner sleeved rod portion right-hand member, the diameter of external thread sleeve is greater than the internal diameter of overcoat right-hand member.
Further, described neck bush locating part comprises key piece and nut, and the key piece is fixed on the left side of overcoat by nut.
Inner core is top can to rotate along with the workpiece of processing in order to make, and described clutch shaft bearing is a Biserial cylindrical roller bearing.
Further, described second bearing is for placing side by side cylinder roller bearing.
For the active force that makes brute spring can be good at being delivered to inner core top on, the top head of described inner core is provided with a plurality of plain thrust bearings, separates with spacer between the plain thrust bearing.
Telescopic spring center device of the present invention is mainly by overcoat, neck bush and inner core are top, brute spring and clutch shaft bearing, second bearing and plain thrust bearing are formed, behind the clamping workpiece, when cause is heated to 380 ℃-400 ℃, the workpiece swell increment is to the top extension of spring center inner core, the compression brute spring, the size of decrement, according to workpiece weight size, brute spring intensity decides, general workpiece is when 10 tons of left and right sides, we adopt Φ 12 brute springs, before the dress workpiece, earlier the spring precommpression, make spring that certain elastic force be arranged by the neck bush locating part, then when clamping workpiece, telescopic spring center device is installed on the tailstock tool, workpiece one end is clipped on the head of a bed chuck, the other end withstands with top, by top workpiece is held out against, spring can have certain decrement, when the workpiece heating is extended, contract behind the spring and still have certain surplus, when the workpiece shrinkage, spring elongation toply still can be withstood workpiece, therefore, this telescopic spring center device has solved the built-up welding operation well and has caused the top stuck or difficult problem that fractures because workpiece expands with heat and contract with cold.
Description of drawings
Fig. 1 is a schematic diagram of the present invention;
Among the figure, 1 is overcoat, and 2 is neck bush, 3 is that inner core is top, and 4 is the overcoat head, and 5 is overcoat 1 bar portion, 6 is the neck bush head, and 7 is the liner sleeved rod portion, and 8 is top bar portion, 9 is top head, and 10 is top tip, and 11 is first table top, 12 is second table top, and 13 is convex surface, and 14 is Biserial cylindrical roller bearing, 15 is plain thrust bearing, and 16 is the external screw thread nut, and 17 is spacing convex surface, 18 is brute spring, 19 for placing side by side cylinder roller bearing, and 20 is the bearing stop nut, and 21 is interior swivel nut, 22 is external thread sleeve, 23 is the key piece, and 24 is nut, and 25 is spacer.
The specific embodiment
With reference to a kind of telescopic spring center device shown in Figure 1, it comprises overcoat 1, neck bush 2 and inner core top 3, be formed with first table top 11 on the overcoat 1, first table top, 11 left sides are overcoat head 4 on the overcoat 1, first table top, 11 right sides are overcoat 1 bar portion 5, neck bush 2 is arranged in the overcoat 1, first table top, 11 left sides are formed with second table top 12 on neck bush 2, second table top, 12 left sides are neck bush head 6, second table top, 12 right sides are liner sleeved rod portion 7, described inner core top 3 comprises top bar portion 8, top head 9 and conical top tip 10, head is cylindrical, its outer surface is provided with convex surface 13, on the convex surface 13 clutch shaft bearing is set, between convex surface 13 right sides and second table top 12 plain thrust bearing 15 is set, convex surface 13 left sides are provided with flat external screw thread nut 16, flat external screw thread nut 16 and screw-internal thread fit neck bush 2 left ends, neck bush 2 left end outer surfaces are provided with spacing convex surface 17, between spacing convex surface 17 and described first table top 11, brute spring 18 is set, overcoat 1 left side is provided with neck bush 2 locating parts, the bar portion right-hand member of inner core top 3 is provided with second bearing, and the second bearing right side is provided with bearing stop nut 20.
As a further improvement on the present invention; for neck bush 2 right-hand members are formed sealing; bar portion to inner core top 3 forms protection; the bar portion right side of described inner core top 3 is provided with interior swivel nut 21; the bar portion right side matched in clearance of interior swivel nut 21 and inner core top 3; interior swivel nut 21 is arranged in the neck bush 2, and interior swivel nut 21 passes through threaded engagement with neck bush 2.For neck bush 2 is played position-limiting action, prevent from neck bush 2 and inner core top 3 to be spun off from overcoat 1 left end because of the elastic force effect of brute spring 18, described liner sleeved rod portion 7 right-hand member arranged outside have external thread sleeve 22, external thread sleeve 22 is arranged at neck bush 2 outsides, pass through threaded engagement with liner sleeved rod portion 7 right-hand members, the diameter of external thread sleeve 22 is greater than the internal diameter of overcoat 1 right-hand member; Further, described neck bush 2 locating parts comprise key piece 23 and nut 24, and key piece 23 is fixed on the left side of overcoat 1 by nut 24.For inner core top 3 can be rotated along with the workpiece of processing, described clutch shaft bearing is a Biserial cylindrical roller bearing 14; Further, described second bearing is for placing side by side cylinder roller bearing 19.For the active force that makes brute spring 18 can be good at being delivered on the inner core top 3, the head of described inner core top 3 is provided with a plurality of plain thrust bearings 15, separates with spacer 25 between the plain thrust bearing 15.
Claims (7)
1. telescopic spring center device, it is characterized in that: it comprises overcoat, neck bush and inner core are top, put outward and be formed with first table top, put first table top left side outward and be the overcoat head, the first table top right side is outer sleeved rod portion, neck bush is arranged in the overcoat, first table top left side is formed with second table top on neck bush, second table top left side is the neck bush head, the second table top right side is the liner sleeved rod portion, described inner core is top to comprise top bar portion, top head and conical top tip, head is cylindrical, its outer surface is provided with convex surface, clutch shaft bearing is set on the convex surface, between the convex surface right side and second table top plain thrust bearing is set, the convex surface left side is provided with the external screw thread nut, the external screw thread nut and the screw-internal thread fit neck bush left end, neck bush left end outer surface is provided with spacing convex surface, between spacing convex surface and described first table top, brute spring is set, the overcoat left side is provided with the neck bush locating part, the top bar portion right-hand member of inner core is provided with second bearing, and the second bearing right side is provided with the bearing stop nut.
2. telescopic spring center device according to claim 1, it is characterized in that: the top bar portion right side of described inner core is provided with interior swivel nut, the bar portion right side matched in clearance that interior swivel nut and inner core are top, interior swivel nut is arranged in the neck bush, and interior swivel nut and neck bush pass through threaded engagement.
3. telescopic spring center device according to claim 1, it is characterized in that: described liner sleeved rod portion right-hand member arranged outside has external thread sleeve, external thread sleeve is arranged at the neck bush outside, passes through threaded engagement with liner sleeved rod portion right-hand member, and the diameter of external thread sleeve is greater than the internal diameter of overcoat right-hand member.
4. telescopic spring center device according to claim 1 is characterized in that: described neck bush locating part comprises key piece and nut, and the key piece is fixed on the left side of overcoat by nut.
5. telescopic spring center device according to claim 1 is characterized in that: described clutch shaft bearing is a Biserial cylindrical roller bearing.
6. telescopic spring center device according to claim 1 is characterized in that: described second bearing is for placing side by side cylinder roller bearing.
7. telescopic spring center device according to claim 1 is characterized in that: the top head of described inner core is provided with a plurality of plain thrust bearings, separates with spacer between the plain thrust bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110138116 CN102225471B (en) | 2011-05-26 | 2011-05-26 | Telescopic type spring centring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110138116 CN102225471B (en) | 2011-05-26 | 2011-05-26 | Telescopic type spring centring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102225471A true CN102225471A (en) | 2011-10-26 |
| CN102225471B CN102225471B (en) | 2012-12-05 |
Family
ID=44806488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110138116 Active CN102225471B (en) | 2011-05-26 | 2011-05-26 | Telescopic type spring centring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102225471B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604649A (en) * | 2018-12-25 | 2019-04-12 | 安徽大昌科技股份有限公司 | A kind of multiduty Finial device of Vehicle Processing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204785U (en) * | 1987-11-20 | 1988-10-19 | 铁道部株洲电力机车工厂 | Telescopic lubricating center |
| CN2064693U (en) * | 1990-04-03 | 1990-10-31 | 王曙 | Hard alloy fixed and movable dual-purpose centre |
| RU2087265C1 (en) * | 1995-03-06 | 1997-08-20 | Российский Университет Дружбы Народов | Lathe center (versions) |
| CN2934261Y (en) * | 2006-06-29 | 2007-08-15 | 上海恒精机电设备有限公司 | Telescopic rotating centre device |
| CN201223951Y (en) * | 2008-06-04 | 2009-04-22 | 浙江三鸥机械股份有限公司 | Multifunctional center |
| CN201543837U (en) * | 2009-12-14 | 2010-08-11 | 天津市臣涛精密机械设备有限公司 | Spring retractable cross-section positioning dedicated rotating center |
| CN101837468A (en) * | 2009-03-18 | 2010-09-22 | 张艳 | Centre with powerful clamping and temperature compensating functions |
| CN101898255A (en) * | 2009-05-25 | 2010-12-01 | 南京农业大学 | Replaceable ceramic rotating centre |
| CN202137388U (en) * | 2011-05-26 | 2012-02-08 | 常州宝隆冶金设备制造有限公司 | Telescopic spring centre device |
-
2011
- 2011-05-26 CN CN 201110138116 patent/CN102225471B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87204785U (en) * | 1987-11-20 | 1988-10-19 | 铁道部株洲电力机车工厂 | Telescopic lubricating center |
| CN2064693U (en) * | 1990-04-03 | 1990-10-31 | 王曙 | Hard alloy fixed and movable dual-purpose centre |
| RU2087265C1 (en) * | 1995-03-06 | 1997-08-20 | Российский Университет Дружбы Народов | Lathe center (versions) |
| CN2934261Y (en) * | 2006-06-29 | 2007-08-15 | 上海恒精机电设备有限公司 | Telescopic rotating centre device |
| CN201223951Y (en) * | 2008-06-04 | 2009-04-22 | 浙江三鸥机械股份有限公司 | Multifunctional center |
| CN101837468A (en) * | 2009-03-18 | 2010-09-22 | 张艳 | Centre with powerful clamping and temperature compensating functions |
| CN101898255A (en) * | 2009-05-25 | 2010-12-01 | 南京农业大学 | Replaceable ceramic rotating centre |
| CN201543837U (en) * | 2009-12-14 | 2010-08-11 | 天津市臣涛精密机械设备有限公司 | Spring retractable cross-section positioning dedicated rotating center |
| CN202137388U (en) * | 2011-05-26 | 2012-02-08 | 常州宝隆冶金设备制造有限公司 | Telescopic spring centre device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604649A (en) * | 2018-12-25 | 2019-04-12 | 安徽大昌科技股份有限公司 | A kind of multiduty Finial device of Vehicle Processing |
| CN109604649B (en) * | 2018-12-25 | 2020-11-03 | 安徽大昌科技股份有限公司 | Center device of car processing multipurpose |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102225471B (en) | 2012-12-05 |
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