CN203418346U - Double-taper automatic centering device - Google Patents
Double-taper automatic centering device Download PDFInfo
- Publication number
- CN203418346U CN203418346U CN201320546411.1U CN201320546411U CN203418346U CN 203418346 U CN203418346 U CN 203418346U CN 201320546411 U CN201320546411 U CN 201320546411U CN 203418346 U CN203418346 U CN 203418346U
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- China
- Prior art keywords
- positioning sleeve
- mandrel
- round platform
- blind hole
- columnar portion
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Abstract
The utility model discloses a double-taper automatic centering device which comprises a mandrel. A convex ring is arranged at one end of the mandrel, the diameter of the convex ring is larger than that of the mandrel, a positioning sleeve is mounted at the other end of the mandrel, a first spring in a compressed state is sleeved on the mandrel and is positioned between the positioning sleeve and the convex ring, the positioning sleeve is axially divided into a cylinder and a circular truncated cone, the surface of the circular truncated cone is tapered surface, a large-diameter end of the circular truncated cone is connected with the mandrel by the cylinder, a tail end of the cylinder is used as an end surface of the mandrel, a coaxial blind hole is formed in a small-diameter end of the circular truncated cone, and a second centering device with a tapered surface is mounted in the blind hole. The double-taper automatic centering device has the advantages that directions in which clamping force can be exerted on a workpiece can be increased owing to a centering mode implemented by the aid of the two tapered surfaces, and acting force exerted by one tapered surface is inevitably increased when acting force exerted by the other tapered surface is decreased, so that the clamping force exerted on the workpiece cannot be changed and keeps being stably exerted on the workpiece, and problems of eccentricity and shaking can be solved.
Description
Technical field
The utility model relates to a kind of orientation tool in machining industry, specifically refers to double tapered self-centering apparatus.
Background technology
Turning attachment is divided into by workpiece locate mode difference: centring type (axle formula), chuck type, chuck mode, angle bar formula and faceplate type etc.Centring type turning attachment: on centring type turning attachment, workpiece Chang Yikong or excircle orientation, fixture adopts centering and clamping mechanism.Angle bar formula turning attachment: while processing the revolution end face of the parts such as housing, bearing, lever, joint on lathe, because part shape is more complicated, be difficult to clamping on universal chuck, thereby must design specialized fixture.The clamp body of this fixture is angle bar shape, therefore be called angle bar formula turning attachment.Faceplate type turning attachment: the clamp body of this class fixture claims floral disc, have several T-slots above, the auxiliary elements such as setting element, clamping element and indexing component are installed, cylindrical and endoporus that can machining shape complex part, this class fixture is asymmetric, note balance.
In current machined, have the die casting that uses blank hole location, it is affected with circularity by pattern draft affects, and conventionally uses single cone hole location, and it exists the comparatively significantly coarse problem of centering.
Utility model content
The purpose of this utility model is to provide double tapered self-centering apparatus, solves the low problem of setting accuracy that current centring type turning attachment exists, and reaches the object that improves centering precision.
The purpose of this utility model is achieved through the following technical solutions:
Double tapered self-centering apparatus, comprise mandrel, one end of mandrel is provided with the bulge loop that diameter is greater than axle diameter, the other end at mandrel is provided with positioning sleeve, on the mandrel between positioning sleeve and bulge loop, be set with the first spring in compressive state, described positioning sleeve is divided into columnar portion, round platform portion at its axis direction, the surface of round platform portion is the conical surface, the larger diameter end of round platform portion is that end face mandrel is connected by columnar portion and its end, in the smaller diameter end of round platform portion, be provided with the blind hole of coaxial line, the second conical surface centring means is installed in blind hole.The utility model is the improvement that existing conical surface centralizer is made, comprise mandrel, it is cylindric that mandrel is, its one end is provided with the bulge loop that diameter is larger, and the other end is provided with positioning sleeve, and positioning sleeve can move freely at the axis direction of mandrel, on the mandrel between positioning sleeve and bulge loop, be set with the first spring in compressive state, the first spring, in compressive state, can keep the pressure to positioning sleeve, makes it keep the pressure to centering workpiece, positioning sleeve is divided into columnar portion at its axis direction, round platform portion, the surface of round platform portion is the conical surface, its effect is identical with traditional conical surface centering, the bellmouth of the conical surface and workpiece is taper fit, realize centering, the larger diameter end of round platform portion is connected with mandrel by columnar portion, the utility model is by being provided with the blind hole of coaxial line in the smaller diameter end in round platform portion, the second conical surface centring means is installed in blind hole, so, two coaxial conical surface centering, its tapering can be different, in fact increased the pressure between centring means and workpiece, and the distribution area of pressure, because its tapering of two conical surfaces is different, and vertical its contact-making surface of the pressure that workpiece is subject to, therefore the extruding force direction that workpiece is subject to is different, for traditional single conical surface centering, the mode of two conical surfaces centering of the present utility model can be so that the chucking power direction that workpiece is subject to increases, when the active force between a conical surface reduces, active force between another conical surface must increase, the chucking power that workpiece is subject to can not changed, and traditional method of clamping, when the chucking power between a conical surface changes, the chucking power that workpiece is subject to must change, thereby easily shake, eccentric problem, the utility model can holding workpiece stability under loading, solve eccentric, the problem of shake.
The second described conical surface centring means comprises the second positioning sleeve, and the second positioning sleeve comprises the cylindrical section that the blind hole with positioning sleeve matches and be connected to the round platform section on cylindrical section, and the surface of round platform section is the conical surface; The second positioning sleeve inner hollow is tubular, has a dividing plate in it, and screw is fixed on the axis of positioning sleeve through the through hole on dividing plate, is set with the second spring in compression shape body on the screw in blind hole.Specifically, on the minor diameter end face of positioning sleeve, offer blind hole, this blind hole is positioned on the axis of positioning sleeve, the second positioning sleeve integral body is cylindric, there is one section of dividing plate that diameter is less its inside, the effect of dividing plate is that the cavity in the second positioning sleeve is divided into two ends, its middle part is porose simultaneously, for screw, pass, screw passes the through hole on dividing plate and is fixed on the axis of positioning sleeve, screw is limited to the second positioning sleeve in blind hole, the second positioning sleeve can be movable along screw, be limited between the end and blind hole bottom of screw, the second spring of compressive state is installed on screw, when being squeezed, the second positioning sleeve gives the chucking power that workpiece is larger, the second positioning sleeve also has two parts: cylindrical section, round platform section, the effect of its middle cylindrical section is to match with blind hole, play the effect of guiding, the effect of round platform section is to provide the conical surface that the taper hole with workpiece matches, when the top diameter of round platform section is zero, become cone, applicable too.
Also comprise that columnar portion with described positioning sleeve matches and the collar movably, in columnar portion, be provided with the stop screw of the collar.Specifically, for the ease of the installation of the first spring and spacing, can adopt in the columnar portion of positioning sleeve the collar is installed, utilize the collar to coordinate to realize the chucking power increase of positioning sleeve with the first spring, the collar utilizes stop screw to be limited in motion in limited scope, thereby realizes the object of Reusability.
Described stop screw is through columnar portion, and its two ends all protrude from columnar portion surface; Or on the same disc of columnar portion, two or more stop screws are set.According to the size of diameter of work, can adopt the positioner of different model, when diameter is less, can to a point of the collar spacing, just can complete whole spacing by a stop screw, when diameter increases, the spacing collar discontinuity equalization that may cause of single-point increases, now, can be by two or more stop screws being set on the same annulus in columnar portion, keep collar stress equalization, preferably symmetrical or uniform, also can adopt longer stop screw through columnar portion, its two ends are all as limit point.
Also comprise the grip shank being connected with mandrel by hold-down screw, in grip shank, be provided with locating piece.
The utility model compared with prior art, has following advantage and beneficial effect:
1 the utility model double tapered self-centering apparatus, in the smaller diameter end of round platform portion, be provided with the blind hole of coaxial line, the second conical surface centring means is installed in blind hole, so, two coaxial conical surface centering, its tapering can be different, in fact increased the pressure between centring means and workpiece, and the distribution area of pressure, because its tapering of two conical surfaces is different, and vertical its contact-making surface of the pressure that workpiece is subject to, therefore the extruding force direction that workpiece is subject to is different, for traditional single conical surface centering, the mode of two conical surfaces centering of the present utility model can be so that the chucking power direction that workpiece is subject to increases, when the active force between a conical surface reduces, active force between another conical surface must increase, the chucking power that workpiece is subject to can not changed, and traditional method of clamping, when the chucking power between a conical surface changes, the chucking power that workpiece is subject to must change, thereby easily shake, eccentric problem, the utility model can holding workpiece stability under loading, solve eccentric, the problem of shake,
2 the utility model double tapered self-centering apparatus, the second positioning sleeve integral body is cylindric, there is one section of dividing plate that diameter is less its inside, the effect of dividing plate is that the cavity in the second positioning sleeve is divided into two ends, its middle part is porose simultaneously, for screw, pass, screw passes the through hole on dividing plate and is fixed on the axis of positioning sleeve, screw is limited to the second positioning sleeve in blind hole, the second positioning sleeve can be movable along screw, be limited between the end and blind hole bottom of screw, the spring of compressive state is installed on screw, when being squeezed, the second positioning sleeve gives the chucking power that workpiece is larger, the second positioning sleeve also has two parts: cylindrical section, round platform section, the effect of its middle cylindrical section is to match with blind hole, play the effect of guiding, the effect of round platform section is to provide the conical surface that the taper hole with workpiece matches, when the top diameter of round platform section is zero, become cone, applicable too,
3 the utility model double tapered self-centering apparatus, according to the size of diameter of work, can adopt the positioner of different model, when diameter is less, can to a point of the collar spacing, just can complete whole spacing by a stop screw, when diameter increases, the spacing collar discontinuity equalization that may cause of single-point increases, now, can be by two or more limit points being set on the same annulus in columnar portion, keep collar stress equalization, preferably symmetrical or uniform, also can adopt longer screw through columnar portion, its two ends are all as limit point, various ways, can select arbitrarily.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the utility model embodiment, forms the application's a part, does not form the restriction to the utility model embodiment.In the accompanying drawings:
Fig. 1 is the utility model embodiment mono-structural representation;
Fig. 2 is the utility model embodiment bis-structural representations.
Mark and corresponding parts title in accompanying drawing:
1-mandrel, 2-bulge loop, 3-positioning sleeve, 31-columnar portion, 32-round platform portion, 4-blind hole, 5-the second positioning sleeve, 51-cylindrical section, 52-round platform section, 6-dividing plate, 7-screw, 8-the second spring, the 9-collar, 10-stop screw, 11-hold-down screw, 12-grip shank, 13-locating piece, 14-the first spring.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, exemplary embodiment of the present utility model and explanation thereof are only for explaining the utility model, and conduct is not to restriction of the present utility model.
Embodiment mono-
As shown in Figure 1, the utility model double tapered self-centering apparatus, comprise grip shank 12, grip shank 12 is for being arranged on lathe, in grip shank, there is a larger-diameter ring, locating piece 13 is installed thereon, on the axis of grip shank 12, by hold-down screw 11, be connected with mandrel 1, mandrel 1 is cylindric, its one end is provided with the bulge loop 2 that diameter is larger, the other end is provided with positioning sleeve 3, positioning sleeve 3 can move freely at the axis direction of mandrel 1, in the columnar portion 31 of positioning sleeve 3, be set with the collar 9, in the columnar portion 31 of positioning sleeve 3, stop screw 10 is installed, on the mandrel 1 between positioning sleeve 3 and the collar 9, be set with the first spring 14 in compressive state, the first spring 14 is in compressive state, can keep the pressure to positioning sleeve 3, when positioning sleeve 3 diameters are less time, that by a stop screw 10, gives 9 one points of the collar spacingly just can complete the spacing of integral body, when positioning sleeve 3 diameters increase, can be by two or more stop screws 10 be set on the same annulus in columnar portion, keep the collar 9 stress equalizations, preferably symmetrical or uniform, positioning sleeve 3 is divided into columnar portion 31 at its axis direction, round platform portion 32, the surface of round platform portion 32 is the conical surface, its effect is identical with traditional conical surface centering, the bellmouth of the conical surface and workpiece is taper fit, realize centering, the larger diameter end of round platform portion 32 is connected with mandrel 1 by columnar portion 31, in the smaller diameter end of round platform portion 32, be provided with the blind hole 4 of coaxial line, the second positioning sleeve 5 is installed in blind hole 4, the second positioning sleeve 5 integral body are cylindric, there is one section of dividing plate 6 that diameter is less its inside, the effect of dividing plate 6 is that the cavity in the second positioning sleeve 5 is divided into two ends, its middle part is porose simultaneously, for screw 7, pass, screw 7 passes the through hole on dividing plate and is fixed on the axis of positioning sleeve 3, screw 7 is limited to the second positioning sleeve 5 in blind hole 4, the second positioning sleeve 5 can be movable along screw 7, be limited between the end and blind hole 4 bottoms of screw 7, the second spring 8 of compressive state is installed on screw 7, when being squeezed, the second positioning sleeve 5 gives the chucking power that workpiece is larger, the second positioning sleeve 5 also has two parts: cylindrical section 51, round platform section 52, the effect of its middle cylindrical section 51 is to match with blind hole 4, play the effect of guiding, the effect of round platform section 52 is to provide the conical surface that the taper hole with workpiece matches, when the top diameter of round platform section 52 is zero, become cone 51, applicable too.
Embodiment bis-
As shown in Figure 2, the difference of the present embodiment and embodiment mono-is only: round platform portion 32 taperings of positioning sleeve 3 are larger, comparatively obvious, tapering in embodiment mono-is less, not obvious, and round platform section 52 taperings of the second positioning sleeve 5 are larger, comparatively obvious, a kind of tapering of embodiment is less, not obvious; According to actual Workpiece structure, can adopt round platform portion 32 and the round platform section 52 of different taperings, and in same positioner, the tapering of round platform portion 32 and round platform section 52 also can be different, difference can be larger; The diameter of positioning sleeve 3 is less, and stop screw 10 length are long and through columnar portion 31, its two ends all protrude from the columnar portion 31 of positioning sleeve 3 as limit point.
The above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. double tapered self-centering apparatus, comprise mandrel (1), one end of mandrel (1) is provided with the bulge loop (2) that diameter is greater than mandrel (1) diameter, the other end at mandrel (1) is provided with positioning sleeve (3), on the mandrel (1) between positioning sleeve (3) and bulge loop (2), be set with the first spring (14) in compressive state, it is characterized in that: described positioning sleeve (3) is divided into columnar portion (31) at its axis direction, round platform portion (32), the surface of round platform portion (32) is the conical surface, the larger diameter end of round platform portion (32) is connected with mandrel (1) by columnar portion (31), in the smaller diameter end of round platform portion (32), be provided with the blind hole (4) of coaxial line, the second conical surface centring means is installed in blind hole (4).
2. double tapered self-centering apparatus according to claim 1, it is characterized in that: the second described conical surface centring means comprises the second positioning sleeve (5), the second positioning sleeve (5) comprises the cylindrical section (51) that the blind hole (4) with positioning sleeve (3) matches and is connected to the round platform section (52) on cylindrical section (51), and the surface of round platform section (52) is the conical surface; The second positioning sleeve (5) inner hollow is tubular, in it, there is a dividing plate (6), screw (7) is fixed on the axis of positioning sleeve (3) through the through hole on dividing plate (6), is set with the second spring (8) in compression shape body on the screw (7) in blind hole (4).
3. double tapered self-centering apparatus according to claim 1 and 2, it is characterized in that: also comprise that columnar portion (31) with described positioning sleeve (3) matches and the collar (9) movably, in columnar portion (31), be provided with the stop screw (10) of the collar (9).
4. double tapered self-centering apparatus according to claim 3, is characterized in that: described stop screw (10) is through columnar portion (31), and its two ends all protrude from columnar portion (31) surface; Or two or more stop screws (10) are set on the same disc of columnar portion (31).
5. double tapered self-centering apparatus according to claim 1 and 2, is characterized in that: also comprise the grip shank (12) being connected with mandrel by hold-down screw (11), be provided with locating piece (13) in grip shank (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546411.1U CN203418346U (en) | 2013-09-04 | 2013-09-04 | Double-taper automatic centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320546411.1U CN203418346U (en) | 2013-09-04 | 2013-09-04 | Double-taper automatic centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203418346U true CN203418346U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320546411.1U Expired - Fee Related CN203418346U (en) | 2013-09-04 | 2013-09-04 | Double-taper automatic centering device |
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| Country | Link |
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| CN (1) | CN203418346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433787A (en) * | 2013-09-04 | 2013-12-11 | 成都华川电装有限责任公司 | Dual taper automatic centring device |
-
2013
- 2013-09-04 CN CN201320546411.1U patent/CN203418346U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433787A (en) * | 2013-09-04 | 2013-12-11 | 成都华川电装有限责任公司 | Dual taper automatic centring device |
| CN103433787B (en) * | 2013-09-04 | 2015-10-28 | 成都华川电装有限责任公司 | Double tapered self-centering apparatus |
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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: 20140205 Termination date: 20150904 |
|
| EXPY | Termination of patent right or utility model |