CN202656034U - Grinding ball mandrel - Google Patents
Grinding ball mandrel Download PDFInfo
- Publication number
- CN202656034U CN202656034U CN 201120577929 CN201120577929U CN202656034U CN 202656034 U CN202656034 U CN 202656034U CN 201120577929 CN201120577929 CN 201120577929 CN 201120577929 U CN201120577929 U CN 201120577929U CN 202656034 U CN202656034 U CN 202656034U
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- mold
- molds
- slide blocks
- fixed
- regulating
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- Expired - Fee Related
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- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The utility model relates to a grinding ball mandrel. A shaft penetrates through a mold, a separation sleeve and another mold, the shaft, the mold, the separation sleeve and the other mold are fixed by a flat key, the shaft and the two molds are fixed by spot welding, center holes are drilled in two ends of the shaft, four grooves are arranged at the peripheries of the molds, regulating slide blocks and slope slide blocks are arranged in the grooves and tightly pressed by screws and springs, pressing flanges are fixed at the outer sides of the molds by inside hexagonal bolts, regulating bolts are arranged in screw holes of the pressing flanges, the end parts of the regulating bolts are inserted into T-shaped troughs of the regulating slide blocks, a retaining plate is fixed at the inner sides of the molds by hexagon bolts to prevent the slope slide blocks from moving to the inner side, and a left mold and a right mold are configured into same structures and symmetrically distributed. In the correction process, the center holes in the two ends of the shaft are propped, a ball body is sleeved on the outer circles of the molds, if the ball body eccentrically shifts towards one side, the regulation bolt at the eccentric position is firstly regulated, the regulating slide blocks move to the outer side, the slope slide blocks move in the circle center directions of the molds under the action of the spring force, the regulating bolt in the opposite side is then regulated, the slope slide blocks move in the direction away from the circle center directions of the molds, and by parity of reasoning, the ball body can be corrected.
Description
Affiliated technical field
The utility model relates to a kind of special fixture, is used for the abrading-ball mandrel of grinding ball spherical outside surface.
Background technology
Spheroid is the opening and closing element of ball valve, because it is the major part that affects the ball valve sealing performance, require high to its machining accuracy and roughness, traditional processing method is to utilize tensioning sleeve to clamp, first turning on spherical turning lathe, then sprayed wc, go grinding again to spheric grinding machine, every procedure all is furnished with tensioning sleeve and clamps, like this, clamping through three process, malalignment produces accumulated error, and can't correct it, thereby it is many to form grinding on one side, grind fewly on one side, make the sprayed wc coating layer thickness of spherome surface inhomogeneous, perhaps because axiality does not reach the grinding time lengthening, original only needs can grind in about 2 hours, sometimes can not grind, and have a strong impact on product quality and production efficiency in 6-8 hour.
Summary of the invention
Do mandrel in order to overcome existing tensioning sleeve, spheroid produces the disalignment phenomenon easily, spherical grinding is uneven, have a strong impact on product quality and efficient, the utility model provides a kind of mandrel, can not produce spheroid off-centre, make sphere obtain Even Grinding, precision and roughness all reach designing requirement, and the tungsten carbide coating even thickness is consistent, guarantee the good sealing property of ball valve.
Technical solutions of the utility model are: this mandrel is by axle, pressure flange, adjusting bolt, flat key, screw, spring, valve rod, inclined plane slide block, adjusting slider, spacer, retaining plate, hex bolts, mold, the compositions such as hexagon socket head cap screw, axle is from mold, spacer, pass successively in the mold, flat key is with axle, mold, spacer, mold is fixed, again axle and two molds are fixed with spot welding, four grooves are arranged around the mold, adjusting slider, inclined plane slide block is placed in one, screw, spring is with inclined plane slide block, adjusting slider compresses, hexagon socket head cap screw is fixed in pressure flange in the outside of mold, adjusting bolt places in the screw of pressure flange, the end is inserted in the "T"-shaped groove of adjusting slider, hex bolts is fixed in retaining plate the inboard of mold, prevent that inclined plane slide block from sliding to the inside, left, right mold adopts same structure and configuration, and be arranged symmetrically with, center hole is bored at the axle two ends.Spheroid that will grinding is enclosed within on the cylindrical of abrading-ball mandrel mold, with the top center hole that withstands the mandrel two ends, the spheroid cylindrical is proofreaied and correct, eccentric to one side such as spheroid, regulate first the adjusting bolt at this place, make adjusting slider mobile laterally, inclined plane slide block is under the effect of spring force, then move to mold center of circle direction, regulate again the adjusting bolt of rightabout one side, allow adjusting slider slide to the inside, promoting inclined plane slide block moves to leaving center of circle direction, by that analogy, repeatedly several times, spheroid can be proofreaied and correct.
The beneficial effects of the utility model are that owing to adopted abrading-ball mandrel, the outer circles of spheroid to be easy to be adjusted in the scope of permission, grinding tungsten carbide coating uniformity out reaches the desired machining accuracy of design and roughness.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is structure chart of the present utility model.
Fig. 2 is the structure chart of mold
The structure chart of Fig. 3 adjusting slider.
Fig. 4 is the adjustment screw structure chart.
Fig. 5 is spring and screw partial enlarged drawing.
1. axles among the figure, 2. pressure flange, 3. adjusting bolt, 4. flat key, 5. screw, 6. spring, 7. inclined plane slide block, 8. adjusting slider, 9. spacer, 10. retaining plate, 11. hex bolts, 12. molds, 13. hexagon socket head cap screws.
The specific embodiment
As shown in the figure, axle 1 is from mold 12, spacer 9, pass in the mold 12, flat key 4 is with axle 1, mold 12, spacer 9, mold 12 is fixing, again axle 1 and two mold 12 usefulness spot welding are fixed, four grooves are arranged around the mold 12, adjusting slider 8, inclined plane slide block 7 is placed in one, screw 5, spring 6 is with inclined plane slide block 7, adjusting slider 8 compresses, hexagon socket head cap screw 13 is fixed in mold 12 outsides with pressure flange 2, and adjusting bolt 3 places in pressure flange 2 screws, and the end is inserted in the "T"-shaped groove of adjusting slider 8, hex bolts 11 is fixed in retaining plate 10 inboard of mold 12, left, right mold adopts same structure and configuration, and is arranged symmetrically with, and center hole is bored at axle 1 two ends.
Claims (1)
1. abrading-ball mandrel, by axle (1), pressure flange (2), adjusting bolt (3), flat key (4), screw (5), spring (6), inclined plane slide block (7), adjusting slider (8), spacer (9), retaining plate (10), hex bolts (11), mold (12), hexagon socket head cap screw (13) forms, it is characterized in that: axle (1) is from mold (12), spacer (9), mold passes in (12), with flat key (4) with axle (1), mold (12), spacer (9), mold (12) is fixing, again axle (1) and two molds (12) are fixed with spot welding, mold (12) has four grooves all around, adjusting slider (8), inclined plane slide block (7) is placed in one, screw (5), spring (6) is with inclined plane slide block (7), adjusting slider (8) compresses, hexagon socket head cap screw (13) is fixed in pressure flange (2) in the outside of mold (12), adjusting bolt (3) places in the screw of pressure flange (2), the end is inserted in the "T"-shaped groove of adjusting slider (8), hex bolts (11) is fixed in retaining plate (10) inboard of mold (12), left, right mold adopts same structure and configuration, and be arranged symmetrically with, center hole is bored at axle (1) two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120577929 CN202656034U (en) | 2011-12-23 | 2011-12-23 | Grinding ball mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120577929 CN202656034U (en) | 2011-12-23 | 2011-12-23 | Grinding ball mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202656034U true CN202656034U (en) | 2013-01-09 |
Family
ID=47450967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120577929 Expired - Fee Related CN202656034U (en) | 2011-12-23 | 2011-12-23 | Grinding ball mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202656034U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059490A (en) * | 2021-03-09 | 2021-07-02 | 广东今科机床有限公司 | Adjustable shaft core grinding clamp |
-
2011
- 2011-12-23 CN CN 201120577929 patent/CN202656034U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113059490A (en) * | 2021-03-09 | 2021-07-02 | 广东今科机床有限公司 | Adjustable shaft core grinding clamp |
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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: 20130109 Termination date: 20141223 |
|
| EXPY | Termination of patent right or utility model |