CN203076923U - Self-centering centre frame - Google Patents
Self-centering centre frame Download PDFInfo
- Publication number
- CN203076923U CN203076923U CN 201220675009 CN201220675009U CN203076923U CN 203076923 U CN203076923 U CN 203076923U CN 201220675009 CN201220675009 CN 201220675009 CN 201220675009 U CN201220675009 U CN 201220675009U CN 203076923 U CN203076923 U CN 203076923U
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- CN
- China
- Prior art keywords
- curve
- push rod
- self
- centre frame
- cross push
- 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 - Fee Related
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- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The utility model provides a self-centering centre frame which is simple in structure and reliable in actions. The self-centering centre frame comprises a cross plunger, and two curve levers arranged at two sides of the cross plunger in a symmetrical mode. Idler wheels are arranged at two sides of the cross plunger, a lower clamp wheel is arranged on the top end of the cross plunger, and the lower end of the cross plunger is connected with a driving device which drives the cross plunger to move up and down. The middles of the curve levers are hinged on a support, curves contacted with the idler wheels are arranged on the lower portion of the curve levers, and side clamp wheels are arranged on the upper portion of the curve levers. When the driving device drives the cross plunger to move up and down, the idler wheels roll along the curves, and the lower clamp wheel and the two side clamp wheels are always arranged on the circle, wherein the center position of the circle is not changed.
Description
Technical field
Present technique relates to a kind of self-centering centre frame.
Background technology
For the workpiece to different cylindrical sizes clamps, require the center of workpiece constant when clamping simultaneously, generally to use the self-centering centre frame.
Existing self-centering centre frame, complex structure, parts are a lot, and the positioning accuracy to workpiece is lower simultaneously.
Summary of the invention
The purpose of present technique provides a kind of self-centering centre frame of simple in structure, reliable in action.
This self-centering centre frame comprises the cross push rod, and symmetry is positioned at two curve levers of cross push rod both sides; The both sides of cross push rod respectively are provided with roller, and the top is provided with down pinch wheels, and the lower end links to each other with the drive unit that drive cross push rod moves up and down; The middle part of curve lever is hinged on the bearing, and the bottom has and the contacted curve of roller, and top is provided with the side pinch wheels; When drive unit drive cross push rod moved up and down, roller rolled along curve, and following pinch wheels and two side pinch wheels are positioned on the constant circumference in center all the time.
Above-mentioned self-centering centre frame, it comprises that also symmetry is positioned at two reset curves plates of cross push rod both sides; The reset curves plate is hinged on the bearing; The bottom of reset curves plate and curve lever is hinged, and has slideway on the reset curves plate, and roller is arranged on the cross push rod by bearing pin, and bearing pin stretches in the slideway; When roller when curve rolls, bearing pin slides along slideway.
Above-mentioned self-centering centre frame, described drive unit are oil cylinder.Use oil cylinder, convenient control is moved more reliable.Here it is hydraulic self-centering centre frame.
The beneficial effect of present technique: during use, drive the cross push rod by drive unit and move up, last pinch wheels moves up along with moving of cross push rod; Roller contacts (moving along curve) all the time with curve, the curve lever is swung around pin joint, and the side pinch wheels on curve lever top is inwardly swung.Shape by curve can guarantee that pinch wheels and two side pinch wheels are positioned on the constant same circumference in center all the time, and this center is exactly the center of workpiece.When guaranteeing that the cross push rod moves down, roller contacts with curve all the time, is provided with the reset curves plate with slip, when roller contacts with curve and when curve rolled, bearing pin slided along slideway all the time.
Description of drawings
Fig. 1 is the schematic diagram of hydraulic self-centering centre frame when clamping small diameter workpiece.
Fig. 2 is the schematic diagram of hydraulic self-centering centre frame when clamping large-diameter workpiece.
The specific embodiment
Self-centering centre frame referring to shown in Figure 1 comprises cross push rod 1, and symmetry is positioned at two curve levers 2 and two reset curves plates 3 of cross push rod both sides; The both sides of cross push rod connect roller 4 by bearing pin 21, and the top is provided with down pinch wheels 7, and the lower end links to each other with the dibit hydraulic jack 5 that drive cross push rod moves up and down; The middle part of curve lever 2 is hinged on the bearing 6, and the bottom has and the contacted curve 23 of roller, and top is provided with side pinch wheels 8.The bottom-hinged of reset curves plate is on bearing 6.The bottom of curve lever is fixed with sliding pin 22, and sliding pin 22 stretches in the slide opening 32 on the reset curves plate, and for the ease of the rotation of sliding pin 22, slide opening is slightly larger than sliding pin.Have slideway 31 on the reset curves plate, bearing pin 21 stretches in the slideway 31.
When dibit hydraulic jack 5 drive cross push rods moved up and down, roller rolled along curve, and bearing pin slides along slideway.Following pinch wheels and two side pinch wheels are positioned on the constant circumference in center all the time, can clamp the workpiece 9 of different-diameter like this.
Claims (3)
1. self-centering centre frame, it is characterized in that: it comprises the cross push rod, symmetry is positioned at two curve levers of cross push rod both sides; The both sides of cross push rod respectively are provided with roller, and the top is provided with down pinch wheels, and the lower end links to each other with the drive unit that drive cross push rod moves up and down; The middle part of curve lever is hinged on the bearing, and the bottom has and the contacted curve of roller, and top is provided with the side pinch wheels; When drive unit drive cross push rod moved up and down, roller rolled along curve, and following pinch wheels and two side pinch wheels are positioned on the constant circumference in center all the time.
2. self-centering centre frame as claimed in claim 1 it is characterized in that: further comprising two reset curves plates that symmetry is positioned at cross push rod both sides; The bottom of reset curves plate and curve lever is hinged, and has slideway on the reset curves plate, and roller is arranged on the cross push rod by bearing pin, and bearing pin stretches in the slideway; When roller when curve rolls, bearing pin slides along slideway.
3. self-centering centre frame as claimed in claim 1 is characterized in that: described drive unit is an oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675009 CN203076923U (en) | 2012-12-10 | 2012-12-10 | Self-centering centre frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220675009 CN203076923U (en) | 2012-12-10 | 2012-12-10 | Self-centering centre frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203076923U true CN203076923U (en) | 2013-07-24 |
Family
ID=48822798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220675009 Expired - Fee Related CN203076923U (en) | 2012-12-10 | 2012-12-10 | Self-centering centre frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203076923U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551992A (en) * | 2015-01-09 | 2015-04-29 | 滁州微秒精密机械有限公司 | Grinding hydraulic pressure type automatic centering central frame |
| CN105149979A (en) * | 2015-06-19 | 2015-12-16 | 常盛杰 | Clamping fixture used for automatic centering of spherical workpiece |
| CN105834904A (en) * | 2016-05-30 | 2016-08-10 | 苏州速腾电子科技有限公司 | Clamp for workpiece polishing |
| CN107900939A (en) * | 2017-12-20 | 2018-04-13 | 优利康达（天津）科技有限公司 | A kind of separation type kuppe fixture |
-
2012
- 2012-12-10 CN CN 201220675009 patent/CN203076923U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104551992A (en) * | 2015-01-09 | 2015-04-29 | 滁州微秒精密机械有限公司 | Grinding hydraulic pressure type automatic centering central frame |
| CN105149979A (en) * | 2015-06-19 | 2015-12-16 | 常盛杰 | Clamping fixture used for automatic centering of spherical workpiece |
| CN105834904A (en) * | 2016-05-30 | 2016-08-10 | 苏州速腾电子科技有限公司 | Clamp for workpiece polishing |
| CN105834904B (en) * | 2016-05-30 | 2018-02-16 | 苏州速腾电子科技有限公司 | Grinding workpieces fixture |
| CN107900939A (en) * | 2017-12-20 | 2018-04-13 | 优利康达（天津）科技有限公司 | A kind of separation type kuppe fixture |
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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: 20130724 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |