CN203751733U - Fixture for turning external cambered surfaces of long shaft type cylindrical workpieces - Google Patents
Fixture for turning external cambered surfaces of long shaft type cylindrical workpieces Download PDFInfo
- Publication number
- CN203751733U CN203751733U CN201420135611.2U CN201420135611U CN203751733U CN 203751733 U CN203751733 U CN 203751733U CN 201420135611 U CN201420135611 U CN 201420135611U CN 203751733 U CN203751733 U CN 203751733U
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- support column
- major axis
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Abstract
The utility model discloses a fixture for turning external cambered surfaces of long shaft type cylindrical workpieces. The fixture comprises a taper shank, a disc, a central column and at least two groups of supporting columns; the taper shank, the disc and the central column are fixed orderly and coaxially; the central column is a cylinder; the supporting columns are fixedly connected to the central column and extend towards the periphery in the radial direction of the central column. The fixture has the advantages that the supporting columns are used for performing multi-point supporting and positioning on a workpiece to be processed in the turning process so that the stress on the workpiece is even, and therefore, the generation of an eccentric distance during processing can be reduced and the processing precision can be improved, and moreover, the stress between the fixture and the workpiece is even and disperse, so that the damage caused by clamping force to the workpiece can be effectively avoided; the fixture is convenient for loading and unloading the workpieces. The fixture is capable of well meeting the application requirements of accurately processing the external cambered surfaces of 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 extrados.
Background technology
For the turning processing of the extrados 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.
In the time of the extrados of processing major axis class cylindrical workpiece, also have workpiece is sleeved on and on a cylinder, carries out machining, the cylinder of a specification can only be used for processing the workpiece with same internal diameter size, process the workpiece of different size and just need to make different cylinders, can cause the very large wasting of resources, make tool making cost too high, and owing to needing tight fit between cylinder and workpiece, if described cylinder is oversize, the operation that workpiece is put and taken off will be very difficult, if described cylinder is too short, same existence produces eccentric throw, affect the problem of machining accuracy.
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 extrados.
The purpose of this utility model realizes by following technical proposals:
A kind of fixture for turning major axis class cylindrical workpiece extrados, comprise taper shank, disk, newel and at least two group support columns, described taper shank, disk and newel are coaxially fixing successively, described newel is cylinder, described support column is fixedly connected on described newel, and described support column, along the radially outward Zhou Yanshen of described newel, is respectively organized support column being axially uniformly distributed along described newel.When use, workpiece to be processed is sleeved on described fixture, make its one end be close to disk, and make the each support column in fixture withstand workpiece intrados, thereby workpiece to be processed is supported and located, make described taper shank, disk, newel and workpiece to be processed keep concentric co-axial, then described taper shank is inserted in lathe spindle internal taper hole and clamped, start lathe and can carry out turning processing to workpiece extrados.This fixture carries out multi-point support location by support column to workpiece to be processed, and workpiece is stressed evenly, can reduce the generation that adds eccentric throw in man-hour, improves machining accuracy, and suit and to take off workpiece all very convenient.Described newel can be solid also can be for hollow.
As optional mode, in above-mentioned fixture, it is adjustable that described support column stretches out the length of described newel.As optional, described support column and described newel are threaded connection, the length that can adjust it and stretch out described newel by rotating described support column.Can also on described support column, scale be set to accurately control the length that described support column is adjusted it and stretched out described newel.
As optional mode, in above-mentioned fixture, respectively organize support column along being all uniformly distributed on the axial and circumferential of described newel, the quantity of same group of support column is at least two, and is distributed in same plane.Described support column is all uniformly distributed along the multiple directions of described newel, can makes workpiece and fixture stressed more even, also can further reduce the generation of eccentric throw.
As optional mode, in above-mentioned fixture, the outside end face of described support column is provided with anti-skidding striped.Increase the friction between fixture and workpiece, prevent relative sliding, described anti-skidding striped can also be arranged to rhombus striped, realize multi-direction anti-skidding.
As optional mode, in above-mentioned fixture, the outside end face of described support column is cambered surface.Make support column milder with contacting of workpiece, contact area is larger, and stressed more dispersion, avoids producing impression or cut at workpiece intrados.
As optional mode, in above-mentioned fixture, described support column is fixed on described newel removably.Support column is arranged to removably, facilitate moving and depositing of fixture, also be convenient to maintenance and replacing to support column, can also be equipped with a series of support columns with different end faces, in the time of the workpiece of processing different size, select suitable support column, support column and surface of the work shape are more adapted to, and contact area is larger.
As optional mode, in above-mentioned fixture, the outside end face of support column 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, described support column is made up of cylinder and cap, and described cap is fixedly connected on described cylinder one end away from described newel removably, and the end face of described cap is cambered surface.Be equipped with a series of caps with different size and or different end face radians, by change cap described fixture be applicable to the workpiece to be processed of different size specification.
As optional mode, in above-mentioned fixture, the elongated slot or the round that on described disk, are also provided with locating pin and 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.Described disk can prevent that workpiece from sliding axially along fixture to a certain extent, and described locating pin can further prevent that workpiece from circumferentially sliding along fixture.
As optional mode, in above-mentioned fixture, the length of described newel is slightly longer than workpiece to be processed, in described fixture, also comprise end cap and locating pin, described end cap is annular, described annular end cap inner circle size and described newel matched in clearance, on described annular end cap and described newel, be respectively arranged with the position-limit mechanism cooperatively interacting, described position-limit mechanism cooperatively interacts, can prevent that end cap from rotating with respect to described newel, 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.If locating pin is all set on described disk and end cap, positioning action is stronger and can reduce the moment of torsion that workpiece bears in turning process.
As optional mode, in above-mentioned fixture, described position-limit mechanism is be arranged on described newel away from the elongated projections near the cylinder end face of a side of taper shank and be arranged on the groove on the inner ring of described annular end cap, and described projection and groove can be realized matched in clearance; Or described position-limit mechanism is to be arranged on described newel away from the strip groove near the cylinder end face of a side of taper shank and to be arranged on projection and groove described in the projection on the inner ring of described annular end cap to realize matched in clearance.
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 to workpiece to be processed is carried out to multi-point support location by support column in turning process, workpiece is stressed evenly, can reduce the generation that adds eccentric throw in man-hour, improve machining accuracy, in addition, between fixture and workpiece stressed evenly, disperse, can effectively avoid chucking power to cause damage to workpiece, and suit and to take off workpiece all very convenient.Can meet well and adopt powder metallurgy mode to prepare the application requirements that the extrados of workpiece is accurately added man-hour in hard alloy process before sintering.
Brief description of the drawings
Fig. 1 is the front view of a kind of fixture described in the utility model;
Fig. 2 is the front perspective view that a kind of fixture described in the utility model and workpiece to be processed cooperatively interact;
Fig. 3 is the right view that a kind of fixture described in the utility model and workpiece to be processed cooperatively interact;
Fig. 4 is the main pseudosection that a kind of fixture described in the utility model and workpiece to be processed cooperatively interact.
Fig. 5 is the schematic diagram of the end cap in fixture described in the utility model;
Reference numeral: 1 is taper shank, 2 is disk, post centered by 3,4 is support column, and 5 is workpiece to be processed, and 6 is locating pin, and 7 is elongated slot or round, and 8 is end cap, and 9 is position-limit mechanism.
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 extrados, as shown in Figure 1, comprise taper shank 1, disk 2, newel 3 and at least two group support columns 4, described taper shank 1, disk 2 are coaxially fixed successively with newel 3, and described newel is cylinder, and described support column 4 is fixedly connected on described newel 3, described support column 4, along the radially outward Zhou Yanshen of described newel, is respectively organized support column being axially uniformly distributed along described newel.As shown in Figure 2,3, 4, when use, workpiece to be processed 5 is sleeved on described fixture, make its one end be close to disk 2, and make the each support column in fixture withstand workpiece intrados, thus workpiece to be processed 5 is supported and located, make described taper shank 1, disk 2, newel 3 keep concentric co-axial with workpiece to be processed 5, then described taper shank is inserted in lathe spindle internal taper hole and clamped, start lathe and can carry out turning processing to workpiece extrados.This fixture carries out multi-point support location by support column to workpiece to be processed, and workpiece is stressed evenly, can reduce the generation that adds eccentric throw in man-hour, improves machining accuracy, and suit and to take off workpiece all very convenient.Described newel can be solid also can be for hollow.
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, the length that described support column 4 stretches out described newel 3 is adjustable.As optional, described support column 4 is threaded connection with described newel 3, the length that can adjust it and stretch out described newel by rotating described support column.Can also on described support column, scale be set to accurately control the length that described support column is adjusted it and stretched out described newel.The length of stretching out described newel 3 by adjusting described support column 4 can make described fixture be applicable to the workpiece of different inner diameters.
As optional mode, in above-mentioned fixture, respectively organize support column 4 along being all uniformly distributed on the axial and circumferential of described newel 3, the quantity of same group of support column is at least two, and is distributed in same plane.Described support column is all uniformly distributed along the multiple directions of described newel, can makes workpiece and fixture stressed more even, also can further reduce the generation of eccentric throw.
As optional mode, described support column 4 has two groups, lays respectively at described newel 3 two ends.In order to make workpiece stressed more dispersion the support column of more groups can also be set, as shown in Figure 2.
As optional mode, the quantity of same group of support column 4 is two, and is distributed in same plane (axis coincidings of two support columns), and the axle center of respectively organizing support column 4 can be orientated unanimously (as shown in Figure 1), also can be along different directions (as shown in Figure 2).
As optional mode, in above-mentioned fixture, the outside end face of described support column 4 (away from the end face of newel one side) is provided with anti-skidding striped.Increase the friction between fixture and workpiece, prevent relative sliding, described anti-skidding striped can also be arranged to rhombus striped, realize multi-direction anti-skidding.
As optional mode, in above-mentioned fixture, the outside end face of described support column 4 is outwardly cambered surface.Make support column milder with contacting of workpiece, contact area is larger, and stressed more dispersion, avoids producing impression or cut at workpiece intrados.
As optional mode, in above-mentioned fixture, described support column 4 is fixed on described newel 3 removably.Support column is arranged to removably, facilitate moving and depositing of fixture, also be convenient to maintenance and replacing to support column, can also be equipped with a series of support columns with different end face radians, in the time of the workpiece of processing different size, select suitable support column, support column and surface of the work shape are more adapted to, and contact area is larger.
As optional mode, in above-mentioned fixture, the outside end face of support column 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, described support column 4 is made up of cylinder and cap, and described cap is fixedly connected on described cylinder one end away from described newel removably, and the end face of described cap is cambered outwards cambered surface.Be equipped with a series of caps with different size and or different end face radians, by change cap described fixture be applicable to the workpiece to be processed of different size specification.
As optional mode, in above-mentioned fixture, the elongated slot or the round 7 that on described disk 2, are also provided with locating pin 6 and radially extend, the diameter of described locating pin 6 is slightly less than the width of elongated slot or the diameter of round, can position workpiece through elongated slot or round.Described disk can prevent that workpiece from sliding axially along fixture to a certain extent, and described locating pin can further prevent that workpiece from circumferentially sliding along fixture.
embodiment 2
As shown in Figure 4 and Figure 5, in the fixture described in embodiment 1, the length of described newel 3 is slightly longer than workpiece to be processed 5, in described fixture, also comprise end cap 8 and locating pin 6, described end cap 8 is annular, described annular end cap 8 inner circle sizes and described newel 3 matched in clearance, on described annular end cap and described newel, be respectively arranged with the position-limit mechanism 9 cooperatively interacting, described position-limit mechanism cooperatively interacts, can prevent that end cap from rotating with respect to described newel, on described end cap 8, be also provided with the elongated slot or the round 6 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.If locating pin is all set on described disk and end cap, positioning action is stronger and can reduce the moment of torsion that workpiece bears in turning process.
As optional mode, in above-mentioned fixture, described position-limit mechanism is be arranged on described newel away from the elongated projections near the cylinder end face of a side of taper shank and be arranged on the groove on the inner ring of described annular end cap, and described projection and groove can be realized matched in clearance; Or described position-limit mechanism is to be arranged on described newel away from the strip groove near the cylinder end face of a side of taper shank and to be arranged on projection and groove described in the projection on the inner ring of described annular end cap to realize matched in clearance.
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 extrados, it is characterized in that, comprise taper shank, disk, newel and at least two group support columns, described taper shank, disk and newel are coaxially fixing successively, described newel is cylinder, and described support column is fixedly connected on described newel, and described support column is along the radially outward Zhou Yanshen of described newel.
2. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, is characterized in that, it is adjustable that described support column stretches out the length of described newel.
3. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, is characterized in that, respectively organizes support column along being axially uniformly distributed of described newel, and the quantity of same group of support column is at least two, and is distributed in same plane.
4. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, is characterized in that, the outside end face of described support column is provided with anti-skidding striped.
5. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, is characterized in that, the outside end face of described support column is cambered surface.
6. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, is characterized in that, described support column is fixed on described newel removably.
7. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, is characterized in that, the outside end face of support column is soft metal or wear-resistant macromolecule material.
8. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, it is characterized in that, described support column is made up of cylinder and cap, and described cap is connected to described cylinder one end away from described newel removably, and the end face of described cap is cambered surface.
9. the fixture for turning major axis class cylindrical workpiece extrados according to claim 1, it is characterized in that, the length of described newel is slightly longer than workpiece to be processed, in described fixture, also comprise end cap and locating pin, described end cap is annular, described annular end cap inner circle size and described newel matched in clearance, on described annular end cap and described newel, be respectively arranged with the position-limit mechanism cooperatively interacting, described position-limit mechanism cooperatively interacts, can prevent that end cap from rotating with respect to described newel, 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 extrados according to claim 9, it is characterized in that, described position-limit mechanism is be arranged on described newel away from the elongated projections near the cylinder end face of a side of taper shank and be arranged on the groove on the inner ring of described annular end cap, and described projection and groove can be realized matched in clearance; Or described position-limit mechanism is to be arranged on described newel away from the strip groove near the cylinder end face of a side of taper shank and to be arranged on projection and groove described in the projection on the inner ring of described annular end cap to realize matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135611.2U CN203751733U (en) | 2014-03-25 | 2014-03-25 | Fixture for turning external cambered surfaces of long shaft type cylindrical workpieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135611.2U CN203751733U (en) | 2014-03-25 | 2014-03-25 | Fixture for turning external cambered surfaces of long shaft type cylindrical workpieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203751733U true CN203751733U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135611.2U Expired - Fee Related CN203751733U (en) | 2014-03-25 | 2014-03-25 | Fixture for turning external cambered surfaces of long shaft type cylindrical workpieces |
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| CN (1) | CN203751733U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443260A (en) * | 2017-08-10 | 2017-12-08 | 遵义市欣茂汇机电有限公司 | A kind of sand blasting room for reel |
| CN109128891A (en) * | 2018-09-26 | 2019-01-04 | 桂林福达股份有限公司 | Tooling for annulus plate part rat holing |
| CN109262325A (en) * | 2018-11-28 | 2019-01-25 | 黄仕平 | A kind of Numerical control machine tool fixture |
| CN109502778A (en) * | 2019-01-04 | 2019-03-22 | 李紫薇 | A kind of aeration plate and the aerator including it |
| CN110695729A (en) * | 2019-10-22 | 2020-01-17 | 北京星航机电装备有限公司 | Profile supports frock in dysmorphism |
| CN110814799A (en) * | 2019-11-06 | 2020-02-21 | 博信矿山科技（徐州）股份有限公司 | Positioning fixture for sawing cylindrical workpieces |
-
2014
- 2014-03-25 CN CN201420135611.2U patent/CN203751733U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107443260A (en) * | 2017-08-10 | 2017-12-08 | 遵义市欣茂汇机电有限公司 | A kind of sand blasting room for reel |
| CN109128891A (en) * | 2018-09-26 | 2019-01-04 | 桂林福达股份有限公司 | Tooling for annulus plate part rat holing |
| CN109262325A (en) * | 2018-11-28 | 2019-01-25 | 黄仕平 | A kind of Numerical control machine tool fixture |
| CN109502778A (en) * | 2019-01-04 | 2019-03-22 | 李紫薇 | A kind of aeration plate and the aerator including it |
| CN110695729A (en) * | 2019-10-22 | 2020-01-17 | 北京星航机电装备有限公司 | Profile supports frock in dysmorphism |
| CN110814799A (en) * | 2019-11-06 | 2020-02-21 | 博信矿山科技（徐州）股份有限公司 | Positioning fixture for sawing cylindrical workpieces |
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| Date | Code | Title | Description |
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| 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 |