CN203751795U - Fixture for turning internal and external circular-arc-shaped surfaces of long shaft type cylindrical workpieces - Google Patents
Fixture for turning internal and external circular-arc-shaped surfaces of long shaft type cylindrical workpieces Download PDFInfo
- Publication number
- CN203751795U CN203751795U CN201420135914.4U CN201420135914U CN203751795U CN 203751795 U CN203751795 U CN 203751795U CN 201420135914 U CN201420135914 U CN 201420135914U CN 203751795 U CN203751795 U CN 203751795U
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- fixture
- claw
- cambered surface
- protuberance
- major axis
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Abstract
The utility model discloses a fixture for turning internal and external circular-arc-shaped surfaces of long shaft type cylindrical workpieces. The fixture comprises a taper shank, a disc and at least three claws; the taper shank is coaxially fixed with one end of the disc; the claws are evenly distributed at the other end of the disc; each claw is capable of moving synchronously in the radial direction; a strip-like projection extending in the axial direction is further arranged on each claw. The fixture is advantageous for avoiding the generation of a relatively large eccentric distance during processing and improving the turning precision, and also advantageous for avoiding the damage caused by clamping force to the workpieces; the fixture is applicable to the workpieces different in diameter. Besides, the fixture is applicable to turning both of the external cambered surface and the internal cambered surface of a workpiece. The fixture is capable of well meeting the application requirements of accurately processing the workpieces before sintering in a process of preparing a hard alloy by use of a powder metallurgy method.
Description
Technical field
The utility model belongs to cylindrical workpiece manufacture field, is specifically related to a kind of fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface.
Background technology
For the turning processing of the inside and outside circle of major axis class cylindrical workpiece, at present the main fixture adopting is all holding workpiece end only, the ratio that retained part accounts for whole workpiece length is very little, this method of clamping has obvious defect: on the one hand because the draw ratio of long-axle workpieces is large, easily produce eccentricity in processing during away from the position of clamping part, thereby affect the machining accuracy of workpiece; On the other hand, because most active forces all concentrate on the position that workpiece is held, easily produce stress and concentrate, thereby workpiece is damaged.This class defect is adopting powder metallurgy mode to show particularly outstandingly in preparing hard alloy process, because Cemented Carbide Hardness is high, burn till finished product after difficulty of processing high, therefore need to before sintering, accurately process workpiece, and requirement on machining accuracy is high; And the workpiece strength before sintering is poor fragile, therefore, in the time preparing the cylindric carbide alloy workpiece of major axis class, existing turning clamp is not well positioned to meet application requirements.
Utility model content
The utility model, for the problems referred to above, provides a kind of new fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface.
The purpose of this utility model realizes by following technical proposals:
A kind of fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface, comprise taper shank, chuck and at least three claws, one end of described taper shank and chuck is coaxially fixing, described claw is distributed on the other end of described chuck, radially synchronizing moving of each claw, is also provided with the protuberance of the strip of extension vertically on described claw.Described fixture is long to the long axis direction clamp distance of workpiece by the protuberance of strip is set, even can carry out integral retaining to workpiece along long axis direction, be conducive to avoid adding produce larger eccentric throw man-hour, improve turning machining accuracy, and workpiece and fixture contact area are larger, stressed more even, more be conducive to avoid chucking power to cause damage to workpiece, by chuck jaws is set, make described fixture can be applicable to the workpiece of different-diameter.Described fixture is all applicable in the time of turner extrados and intrados.
As optional mode, in above-mentioned fixture, on the side end face that described chuck contacts with claw, be evenly equipped with the draw-in groove identical with claw quantity, described claw lays respectively in described draw-in groove and with the claw driving mechanism in chuck and is meshed by gear, described claw driving mechanism comprises with spiral fluted bevel gear wheel with the bevel pinion of spanner jack, described claw engages with helicla flute, bevel gear wheel and bevel pinion are intermeshing, can drive claw at radially synchronizing moving of chuck end face by rotation bevel pinion.
As optional mode, in above-mentioned fixture, described protuberance surface is provided with anti-skidding striped.Increase the friction of protuberance and workpiece, prevent from adding man-hour workpiece and rotate with respect to fixture.
As optional mode, in above-mentioned fixture, described protuberance is provided with trip bolt away from one end of chuck.Increase the chucking power of fixture far-end to workpiece by trip bolt, make clamping more firm, be more conducive to less eccentric throw, improve machining accuracy.
As optional mode, in above-mentioned fixture, side and abaxial side near axle in described protuberance are cambered surface.Be arranged to cambered surface and make the fixture surface of the work of can better fitting, clamp more firmly, workpiece and fixture contact area are larger, and workpiece is stressed more even, avoids stress to concentrate the damage to workpiece.
As optional mode, in above-mentioned fixture, described protuberance is fixed on described claw removably.Protuberance is arranged to removably, facilitate moving and depositing of fixture, also be convenient to maintenance and replacing to protuberance, can also be equipped with a series of protuberances with different interior lateral surface radians, in the time of the workpiece of processing different size, select suitable protuberance, protuberance and surface of the work shape are more adapted to, and contact area is larger.
As optional mode, in above-mentioned fixture, the inside and outside side of described protuberance is soft metal or wear-resistant macromolecule material.Described soft metal is the good materials of the lower ductility of hardness such as aluminium, copper, and described soft metal or wear-resistant macromolecule material make to produce faint distortion in clamping, can make fixture and workpiece laminating tightr, clamps more firm.
As optional mode, in above-mentioned fixture, the length of described protuberance is suitable with the length of workpiece to be processed.Make fixture to can be along workpiece spindle to substantially realizing integral retaining, avoid again that protuberance is long and impact adds the feed operation in man-hour.
As optional mode, in above-mentioned fixture, the length of described protuberance is slightly longer than workpiece to be processed, in described fixture, also comprise end cap and locating pin, described end cap is circular, on it, be evenly equipped with the stopper slot consistent with described claw quantity, described stopper slot and described protuberance matched in clearance, described protuberance can radially be moved in described stopper slot, on described end cap, be also provided with the elongated slot or the round that radially extend, the diameter of described locating pin is slightly less than the width of elongated slot or the diameter of round, can position workpiece through elongated slot or round.End cap and locating pin are set and can further prevent that workpiece from rotating with respect to fixture.
As optional mode, in above-mentioned fixture, on described end cap, the group number of elongated slot number or round is identical with described stopper slot quantity, described elongated slot or round and described stopper slot interlaced arrangement.
Disclosed all features in this description, or step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way
The beneficial effects of the utility model:
Adopt fixture described in the utility model long to the long axis direction clamp distance of workpiece, even can carry out integral retaining to workpiece along long axis direction, be conducive to avoid adding produce larger eccentric throw man-hour, improve turning machining accuracy, and workpiece and fixture contact area are larger, stressed more even, more be conducive to avoid chucking power to cause damage to workpiece, described fixture can be applicable to the workpiece of different-diameter.And described fixture is all applicable in the time of turner extrados and intrados.Can meet well and adopt powder metallurgy mode to prepare the application requirements that workpiece is accurately added man-hour in hard alloy process before sintering.
Brief description of the drawings
Fig. 1 is the front view of fixture described in the utility model;
Fig. 2 is the right view of fixture described in the utility model;
Fig. 3 is the sectional view of protuberance described in a kind of optional mode of fixture described in the utility model;
Fig. 4 is the schematic diagram of end cap in fixture described in the utility model.
Fig. 5 is the schematic diagram that adopts clamp vehicle turning work piece extrados described in the utility model;
Fig. 6 is the schematic diagram that adopts clamp vehicle turning work piece intrados described in the utility model.
Reference numeral: 1 is taper shank, 2 is chuck, and 3 is claw, and 4 is protuberance, and 5 is draw-in groove, 6 is spanner jack, and 7 is trip bolt, and 8 is protuberance medial surface, and 9 is protuberance lateral surface, and 10 is workpiece to be processed, 11 is end cap, and 12 is locating pin, and 13 is stopper slot, and 14 is elongated slot or round.
Detailed description of the invention
By the following examples the utility model is specifically described; be necessary to be pointed out that at this present embodiment is only for being further described the utility model; but can not be interpreted as the restriction to the utility model protection domain, the person skilled in the art in this field can make according to above-mentioned content of the present utility model improvement and the adjustment of some non-intrinsically safes to the utility model.
embodiment 1
A kind of fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface, as depicted in figs. 1 and 2, comprise taper shank 1, chuck 2 and at least three claws 3, described taper shank 1 is coaxially fixing with one end of chuck 2, described claw 3 is distributed on the other end of described chuck 2, and radially synchronizing moving of each claw 3 is also provided with the protuberance 4 of the strip of extension vertically on described claw 3.Described fixture is long to the long axis direction clamp distance of workpiece by the protuberance of strip is set, even can carry out integral retaining to workpiece along long axis direction, be conducive to avoid adding produce larger eccentric throw man-hour, improve turning machining accuracy, and workpiece and fixture contact area are larger, stressed more even, more be conducive to avoid chucking power to cause damage to workpiece, by chuck jaws is set, make described fixture can be applicable to the workpiece of different-diameter.Described fixture is all applicable in the time of turner extrados and intrados.
As optional mode, in above-mentioned fixture, taper shank 1 is the Morse taper shank coordinating with lathe spindle internal taper hole.
As optional mode, in above-mentioned fixture, on the side end face that described chuck 2 contacts with claw 3, be evenly equipped with the draw-in groove 5 identical with claw 3 quantity, described claw 3 lays respectively in described draw-in groove 5 and with the claw driving mechanism in chuck and is meshed by gear, described claw driving mechanism comprises with spiral fluted bevel gear wheel with the bevel pinion of spanner jack 6, described claw engages with helicla flute, bevel gear wheel and bevel pinion are intermeshing, can drive claw at radially synchronizing moving of chuck end face by rotation bevel pinion.
As optional mode, in above-mentioned fixture, described protuberance 4 surfaces are provided with anti-skidding striped.Increase the friction of protuberance and workpiece, prevent from adding man-hour workpiece and rotate with respect to fixture.
As optional mode, in above-mentioned fixture, in described protuberance 4, medial surface 8(is near the side of fixture axis) with lateral surface 9(away from the side of fixture axis) be cambered surface, as shown in Figure 3.Be arranged to cambered surface and make the fixture surface of the work of can better fitting, clamp more firmly, workpiece and fixture contact area are larger, and workpiece is stressed more even, avoids stress to concentrate the damage to workpiece.
As optional mode, in above-mentioned fixture, the inside and outside side of described protuberance 4 is soft metal or wear-resistant macromolecule material.Described soft metal is the good materials of the lower ductility of hardness such as aluminium, copper, and described soft metal or wear-resistant macromolecule material make to produce faint distortion in clamping, can make fixture and workpiece laminating tightr, clamps more firm.
As optional mode, in above-mentioned fixture, the length of the length of described protuberance 4 and workpiece to be processed 10 is suitable.Make fixture to can be along workpiece spindle to substantially realizing integral retaining, avoid again that protuberance is long and impact adds the feed operation in man-hour.
embodiment 2
In the fixture described in embodiment 1, described protuberance 4 is provided with trip bolt 7 away from one end of chuck 2.Increase the chucking power of fixture far-end to workpiece by trip bolt 7, make clamping more firm, be more conducive to less eccentric throw, improve machining accuracy.
embodiment 3
In the fixture described in the various embodiments described above, described protuberance 4 is fixed on described claw 3 removably.Protuberance is arranged to removably, facilitate moving and depositing of fixture, also be convenient to maintenance and replacing to protuberance, can also be equipped with a series of protuberances with different interior lateral surface radians, in the time of the workpiece of processing different size, select suitable protuberance, protuberance and surface of the work shape are more adapted to, and contact area is larger.
embodiment 4
In the fixture described in the various embodiments described above, the length of described protuberance 4 is slightly longer than workpiece to be processed 10, as shown in Figure 4, in described fixture, also comprise end cap 11 and locating pin 12, described end cap 11 (is arranged to annular for annular, in the time of turner intrados, be convenient to carry out feed operation through the endoporus of described annulus), on it, be evenly equipped with the stopper slot 13 consistent with described claw quantity, described stopper slot 13 can be realized matched in clearance with described protuberance 4, described protuberance 4 can radially be moved in described stopper slot 13, on described end cap 11, be also provided with the elongated slot or the round 14 that radially extend, the diameter of described locating pin 12 is slightly less than the width of elongated slot or the diameter of round, can position workpiece through elongated slot or round.End cap and locating pin are set and can further prevent that workpiece from rotating with respect to fixture.
As optional mode, in above-mentioned fixture, on described end cap, the group number of elongated slot number or round is identical with described stopper slot quantity, described elongated slot or round and described stopper slot interlaced arrangement.
While adopting fixture turning major axis class cylindrical workpiece extrados of the present invention, described taper shank 1 is inserted in lathe spindle internal taper hole and clamped, adjust the position of each claw 3, it is gathered mutually, workpiece to be processed 10 is enclosed within on all claws, again adjust each claw 3 and make its radially outside synchronizing moving, until push against the intrados of workpiece to be processed 10, make lathe inner main axis, taper shank 1, chuck 2, workpiece to be processed 10 coaxial, starting lathe can carry out turning processing to workpiece extrados, as shown in Figure 5.
While adopting fixture turning major axis class cylindrical workpiece intrados of the present invention, described taper shank 1 is inserted in lathe spindle internal taper hole and clamped, adjust the position of each claw 3, make its mutually away from, workpiece to be processed 10 is placed in the cavity that all claw medial surfaces surround, again adjusting each claw 3 radially draws it in to inter-sync, until the extrados of clamping workpiece to be processed 10, make lathe inner main axis, taper shank 1, chuck 2, workpiece to be processed 10 is coaxial, start lathe, from one end feed away from chuck 2, can carry out turning processing to workpiece intrados, as shown in Figure 6.
In optional mode described in the utility model, can also before turning processing, described trip bolt 7 be tightened, to increase the chucking power of fixture far-end to workpiece; In optional mode described in the utility model, can also before turning processing, described end cap 11 be enclosed within to workpiece to be processed one end away from chuck 2, and each claw 3 is stuck in stopper slot 13, adjust the position of locating pin 12 in elongated slot or round 14 and tighten, make it pass end cap, prop up the end of workpiece to be processed 10, further prevent the effect of skidding to arrive.
The foregoing is only preferred embodiment of the present utility model, is only illustrative for the utility model, and nonrestrictive; Those of ordinary skill in the art understand, and in the spirit and scope that limit, can carry out many changes to it at the utility model, amendment, and even equivalence is changed, but all will fall into protection domain of the present utility model.
Claims (10)
1. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface, it is characterized in that, comprise taper shank, chuck and at least three claws, one end of described taper shank and chuck is coaxially fixing, described claw is distributed on the other end of described chuck, and radially synchronizing moving of each claw is also provided with the protuberance of the strip of extension vertically on described claw.
2. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, it is characterized in that, on the side end face contacting with claw at described chuck, be evenly equipped with the draw-in groove identical with claw quantity, described claw lays respectively in described draw-in groove and with the claw driving mechanism in chuck and is meshed by gear, described claw driving mechanism comprises with spiral fluted bevel gear wheel with the bevel pinion of spanner jack, described claw engages with helicla flute, bevel gear wheel and bevel pinion are intermeshing, can drive claw at radially synchronizing moving of chuck end face by rotation bevel pinion.
3. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, is characterized in that, described protuberance surface is provided with anti-skidding striped.
4. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, is characterized in that, described protuberance is provided with trip bolt away from one end of chuck.
5. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, is characterized in that, side and abaxial side near axle in described protuberance are cambered surface.
6. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, is characterized in that, described protuberance is fixed on described claw removably.
7. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, is characterized in that, the inside and outside side of described protuberance is soft metal or wear-resistant macromolecule material.
8. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, is characterized in that, the length of described protuberance is suitable with the length of workpiece to be processed.
9. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 1, it is characterized in that, the length of described protuberance is slightly longer than workpiece to be processed, in described fixture, also comprise end cap and locating pin, described end cap is circular, on it, be evenly equipped with the stopper slot consistent with described claw quantity, described stopper slot and described protuberance matched in clearance, described protuberance can radially be moved in described stopper slot, on described end cap, be also provided with the elongated slot or the round that radially extend, the diameter of described locating pin is slightly less than the width of elongated slot or the diameter of round, can position workpiece through elongated slot or round.
10. the fixture for turning major axis class cylindrical workpiece inside and outside circle cambered surface according to claim 9, is characterized in that, the group number of described elongated slot number or round is identical with described stopper slot quantity, described elongated slot or round and described stopper slot interlaced arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135914.4U CN203751795U (en) | 2014-03-25 | 2014-03-25 | Fixture for turning internal and external circular-arc-shaped surfaces of long shaft type cylindrical workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135914.4U CN203751795U (en) | 2014-03-25 | 2014-03-25 | Fixture for turning internal and external circular-arc-shaped surfaces of long shaft type cylindrical workpieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203751795U true CN203751795U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135914.4U Expired - Fee Related CN203751795U (en) | 2014-03-25 | 2014-03-25 | Fixture for turning internal and external circular-arc-shaped surfaces of long shaft type cylindrical workpieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203751795U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105917022A (en) * | 2014-08-22 | 2016-08-31 | 三井金属矿业株式会社 | Method for manufacturing target material for sputtering target and claw member |
| CN108202237A (en) * | 2018-03-29 | 2018-06-26 | 重庆青山工业有限责任公司 | Turning is equipped with the fixture of the axially extending bore of the long axis of annular radial protrusion on lathe |
| CN109732290A (en) * | 2019-02-27 | 2019-05-10 | 衢州飞瑞特种陶瓷有限公司 | Axial workpiece pre-stressed machining method and device |
| CN110625546A (en) * | 2019-10-21 | 2019-12-31 | 江苏华海钢结构有限公司 | Positioning device for machining of cylindrical mechanical parts |
-
2014
- 2014-03-25 CN CN201420135914.4U patent/CN203751795U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105917022A (en) * | 2014-08-22 | 2016-08-31 | 三井金属矿业株式会社 | Method for manufacturing target material for sputtering target and claw member |
| CN108202237A (en) * | 2018-03-29 | 2018-06-26 | 重庆青山工业有限责任公司 | Turning is equipped with the fixture of the axially extending bore of the long axis of annular radial protrusion on lathe |
| CN108202237B (en) * | 2018-03-29 | 2024-05-07 | 重庆青山工业有限责任公司 | Clamp for turning axial through hole provided with long shaft of radial annular bulge on lathe |
| CN109732290A (en) * | 2019-02-27 | 2019-05-10 | 衢州飞瑞特种陶瓷有限公司 | Axial workpiece pre-stressed machining method and device |
| CN110625546A (en) * | 2019-10-21 | 2019-12-31 | 江苏华海钢结构有限公司 | Positioning device for machining of cylindrical mechanical parts |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20160325 |