CN101439482B - Clamping sleeve and clamping device of indexing mechanism - Google Patents
Clamping sleeve and clamping device of indexing mechanism Download PDFInfo
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- CN101439482B CN101439482B CN2008101823161A CN200810182316A CN101439482B CN 101439482 B CN101439482 B CN 101439482B CN 2008101823161 A CN2008101823161 A CN 2008101823161A CN 200810182316 A CN200810182316 A CN 200810182316A CN 101439482 B CN101439482 B CN 101439482B
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- rotary body
- thinner wall
- closing sleeve
- section
- wall section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/006—Supporting devices for clamps
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Abstract
The invention relates to a clamping sleeve and clamping device. The clamping sleeve is provided with: a cylinder part disposed in the annular space between a rotator and a rack, a clamping surface installed at the circumferential part of the cylinder part, an endless groove installed at one side of the circumferential part opposite to the clamping surface along circumferential direction, a thin wall part defined by the clamping surface and the bottom surface of the annular groove, and the fixed part of the rack installed at one end of the cylinder part; a strain force action part supporting the force in compression direction is arranged at the other end of the cylinder part; the track of the intermediate point in the wall thickness of the thin wall part, i.e., the intermediate line of the whole area in axial direction, is of the shape meeting the following conditions: the intermediate line is divided into five equal parts along the axial direction, the five areas are defined as central, middle and end areas from the center to the end, an average track averaging the intermediate line of each area in radial direction is formed, and the distance between the average track of each area and the clamped surface of the rotator is increased according to the sequence of the central, middle and end areas.
Description
Technical field
The clamping device that the present invention relates to the employed indexing means of lathe reaches the closing sleeve as the part of this clamping device.
Background technology
As existing indexing means; Disclosed have comprise base (frame) with center through hole; Rotary body rotatably is supported on the workbench of the inboard of base, and between the outside rotating shaft and the clamping device between the base (with reference to patent documentation 1-TOHKEMY 2002-103181 communique) of work.
This clamping device is by clamping part (closing sleeve) and the hydraulic circuit (deformation force produces mechanism) of clamping part distortion is constituted.Clamping part has the clamping section of thinner wall section, and its section is made the コ font, the hydraulic pressure chamber of ring-type is formed on the outside of clamping section.Clamping part since its clamping section be tubular and its inner surface made rubbing surface, thereby, when clamping, hydraulic pressure chamber is applied hydraulic pressure and makes the crooked and clamping outside rotating shaft in clamping section.
Yet the clamping section utilize this friction to carry out clamping, thereby in use the clamping section of thin-walled can produce be full of cracks sometimes because of chronic fatigue owing to make its inner surface and the friction of outside rotating shaft.So, because the clamping section is to apply hydraulic pressure through the hydraulic pressure chamber to its outside to clamp, thereby, frictional force is descended thereupon sharp, can not obtain enough clamping forces.
Summary of the invention
The present invention considers above-mentioned actual conditions and develops, and provides a kind of clamping section to produce closing sleeve and clamping device that be full of cracks also can keep clamping force constantly even its objective is.
First scheme to the, six schemes of the present invention are prerequisite with the closing sleeve that has like lower component: be configured in the cylindrical portion in the annulus between rotary body and the frame; In the inner circumference portion of cylindrical portion or outer circumference portion, be arranged on the clamping area of the circumferential section relative with rotary body; The endless groove that is provided with continuously along circumferencial direction at circumferential section with the opposite side of circumferential section of the cylindrical portion that clamping area is set; Fixed thinner wall section is drawn in bottom surface by clamping area and endless groove, is arranged at the fixed part to frame of an end of cylindrical portion.
The characteristic of first scheme of the present invention is, is provided with the deformation force service portion of the power of bearing the compression direction that is applied on the axis direction or draw direction in the other end of cylindrical portion; Supposition clamped of rotary body is that the shape of thinner wall section forms under the situation with the face of parallel axes, the track of the intermediate point of the wall thickness in the cross section of above-mentioned axis direction, and promptly the medium line in the whole zone of axis direction is the shape that satisfies first condition; First condition is: above-mentioned medium line is divided into 5 zones of on axis direction, carrying out 5 five equilibriums; 5 zones are decided to be middle section, zone line, end regions from the mediad end; Be formed on the rotary body radial direction medium line in each zone has been carried out average mean trajectory, clamped distance of mean trajectory that each is regional and rotary body increases according to the order of middle section, zone line, end regions.
So-called " in clamped the occasion parallel with axis direction of supposition rotary body " is meant the occasion of clamped the shape that supposition is general.
Though thinner wall section can be that the variable quantity of rotary body radial direction of medium line in 5 zones is to form the medium line in the whole zone of axis direction in modes such as whole zone are formed uniformly; But, preferably undertaken by the invention of alternative plan for thinner wall section is out of shape at an easy rate.Promptly; the medium line that the shape of thinner wall section forms the whole zone of axis direction satisfies the shape of second condition, and second condition is: the variable quantity of the rotary body radial direction of the medium line in 5 zones increases according to the order of middle section, zone line, end regions.
Though the medium line in the whole zone of the axis direction of thinner wall section can be the form with bight, the stress during distortion then focuses on the bight easily.Therefore, concentrate and the raising durability, preferably undertaken by the invention of third party's case for fear of stress.That is, the bottom surface of endless groove or clamping area are arranged to make the medium line in whole zone of the axis direction of thinner wall section to be whole continuous curve shape.
Though the bottom surface of endless groove can be the plane, be out of shape at an easy rate in order to make thinner wall section, the bottom surface of preferably being arranged to make endless groove by the invention of cubic case along with from the two ends of thinner wall section towards the center and near clamped of rotary body.
Though clamping area can be the plane, be out of shape at an easy rate in order to make thinner wall section, the bottom surface of preferably being arranged to endless groove by the invention of the 5th scheme along with from the two ends of thinner wall section towards the center and near clamped of rotary body.
Though thinner wall section can be the form of whole circumference that connects the circumferencial direction of cylinder, in order to be out of shape easily, preferably by the invention of the 6th scheme, on thinner wall section at circumferencial direction across being interval with a plurality of slits.
The clamping device of the indexing means of the 7th scheme of the present invention and all directions case; With by the closing sleeve in the annulus that is contained between rotary body and the frame with the deformation force of closing sleeve active force is produced mechanism constitute; Closing sleeve has: be configured in the cylindrical portion in the annulus; In the inner circumference portion of cylindrical portion or outer circumference portion, be arranged on the clamping area of the circumferential section relative with rotary body; The endless groove that is provided with continuously along circumferencial direction at circumferential section with the opposite side of circumferential section of the cylindrical portion that clamping area is set; Fixed thinner wall section is drawn in bottom surface by clamping area and endless groove, and the fixed part to frame that is arranged at an end of cylindrical portion is a prerequisite.
The characteristic of the 7th scheme of the present invention is that closing sleeve is provided with the deformation force service portion that bears the power that is applied to the draw direction on the axis direction in the other end of cylindrical portion; Supposition clamped of rotary body is that the shape of thinner wall section forms under the situation with the face of parallel axes, the track of the intermediate point of the wall thickness in the cross section of above-mentioned axis direction, and promptly the medium line in the whole zone of axis direction is the shape that satisfies first condition; First condition is: above-mentioned medium line is divided into 5 zones of on axis direction, carrying out 5 five equilibriums; 5 zones are decided to be middle section, zone line, end regions from the mediad end; Be formed on the rotary body radial direction medium line in each zone has been carried out average mean trajectory, clamped distance of mean trajectory that each is regional and rotary body increases according to the order of middle section, zone line, end regions; Under the state of closing sleeve in being contained in annulus; Produce mechanism when draw direction applies the power of ormal weight to the deformation force service portion by means of deformation force, the direction that the clamping area of thinner wall section leaves towards the clamped face from rotary body is retreated and is made rotary body be in releasing orientation; When discharging when producing mechanism to deformation force service portion applied force from deformation force, then the clamping area of thinner wall section is because restoring force and advance and make rotary body be in clamped condition towards clamped direction of extruding rotary body.
All directions case of the present invention and the 7th scheme effect clamp on the contrary, unclamp; Promptly; It is characterized in that; Under the state of closing sleeve in being contained in annulus, produce mechanism when compression direction applies the power of ormal weight to the deformation force service portion by means of deformation force, the clamping area of thinner wall section is before near clamped direction of rotary body and then make rotary body be in clamped condition; When discharging when producing mechanism to deformation force service portion applied force from deformation force, then the clamping area of thinner wall section is because restoring force and retreat and make rotary body be in releasing orientation towards the direction that the clamped face from rotary body leaves.
Effect of the present invention is following.
Invention according to first scheme; Because the shape of the thinner wall section of cylindrical portion is made and is satisfied first condition; Thereby if the deformation force service portion that is equivalent to cylindrical portion the other end is applied the power of compression direction or stretching scheme on axis direction, then thinner wall section all stably is out of shape with the mode that the middle curvature of a curve of thinner wall section changes; the diameter of the clamping area of thinner wall section stably expands or shrinks; if adopt this closing sleeve, even the endless groove of cylindrical portion is not applied hydraulic pressure, also can make the rotary body clamping, unclamp.Therefore, in use,, also can continue to keep clamping force to a certain degree, can use the long time even thinner wall section produces be full of cracks.
According to the invention of alternative plan, satisfy second condition owing to make the shape of thinner wall section, thereby thinner wall section is easily deformable, even it is very little to be applied to the power of deformation force service portion, also can makes its clamping, unclamp.
Invention according to third party's case; Form all continuous curve shapes owing to make the medium line in the whole zone of axis direction of thinner wall section by the bottom surface of endless groove or clamping area; Thereby, compare with sleeve with bight, when clamping or when unclamping thinner wall section is all applied deformation force; Its result can improve durability.
According to the invention of cubic case and since with the bottom surface of endless groove be arranged to along with from the two ends of thinner wall section towards the center and near clamped of rotary body, thereby, with the situation of the bottom surface of annular groove being made the plane relatively, make the thinner wall section distortion easily.
According to the invention of the 5th scheme and since with clamping area be arranged to along with from the two ends of thinner wall section towards the center and near clamped of rotary body, thereby, with the situation of clamping area being made the plane relatively, make the thinner wall section distortion easily.
According to the invention of the 6th scheme, owing to use at circumferencial direction across the thinner wall section that is provided with a plurality of slits at interval, thereby, compare with the sleeve that does not have slit, make the thinner wall section distortion easily.
Invention according to the 7th scheme; Owing to use in the closing sleeve of first scheme; The sleeve that has the deformation force service portion of the power of bearing the draw direction that is applied to axis direction in the other end of cylindrical portion; Thereby; In the effect of possessing the present invention's first scheme, can also when the deformation force service portion being applied the power of draw direction, make rotary body be in releasing orientation, when the stable state of the power that discharges the draw direction that the deformation force service portion is applied, then become the state that clamps rotary body.
According to the invention of case from all directions; Opposite with the invention of the 7th scheme; Owing to use in the closing sleeve of first scheme; The sleeve that has the deformation force service portion of the power of bearing the compression direction that is applied to axis direction in the other end of cylindrical portion, thereby, in the effect of possessing the present invention's first scheme; Can also when the deformation force service portion being applied the power of compression direction, make rotary body be in clamped condition, when the stable state of the power that discharges the compression direction that the deformation force service portion is applied, then become the state that folder unclamps rotary body.
Description of drawings
Fig. 1 is the cutaway view of first example of expression clamping device of the present invention.
Fig. 2 is the key diagram of the closing sleeve of Fig. 1.
Fig. 3 is the cutaway view of second example of expression clamping device of the present invention.
Fig. 4 is the cutaway view of the 3rd example of expression clamping device of the present invention.
Fig. 5 is the cutaway view of the 4th example of expression clamping device of the present invention.
Fig. 6 (a)-Fig. 6 (f) is the one-sided cutaway view of pith of other example of expression closing sleeve.
Fig. 7 is the one-sided cutaway view of pith of the variation of expression closing sleeve.
Among the figure: 1-indexing means, 2-frame, 2a-accommodating chamber, 2b-stage portion, 21a, 21b, 21c, 21d-space segment (annulus), 22-plate, 23-seal member, 3-rotary body; The 3a-rotating shaft, the 3b-circular table, the 3c-axle is used through hole, and the 3d-workbench is used through hole, clamped of 3e-, 3f-end face, 3g-barrel portion, 3h-outer circumference surface; 3j-first outer circumference surface, 3m-second outer circumference surface, the export-oriented groove of 3k-, 4-bearing, 4a-inner ring, 4b-outer ring, 4c-pressing plate, 5-clamping device; The 6-rotating driving device, 6a-worm gear, 6b-worm screw, 6c-clearance part, 7-closing sleeve, 7a-first parts, 7b-the secondth parts; 7c-the 3rd parts, 7d-the 4th parts, 7e-the 5th parts, the last maintenance of 7f-space, 7g-keeps the space down, 71-cylindrical portion, 71b-ring; Lateral body in the 71c-, the outer lateral body of 71d-, 72-fixed part, 72a-first groove, 72b-second groove, 72c-ring, 73-endless groove; The 74-clamping area, the 75-thinner wall section, the 75a-medium line, 75b-dodges face, 75c-sulculus, 75d-slit, 76-deformation force service portion; The 8-deformation force produces mechanism, the 8a-runner, and 8a1-hydraulic cylinder chamber, 8b-piston, 8b1-recess, 8c-unclamp uses passage, 9-O shape circle.
The specific embodiment
Indexing means 1 can be enumerated index table device shown in Figure 1 as an example.Indexing means 1 has frame 2 and rotatably is supported on the rotary body 3 on the frame 2.In addition, in the indexing means 1, bearing 4, clamping device 5 and rotating driving device 6 are between frame 2 and rotary body 3.
The circular table 3b that rotary body 3 is fixed on by rotating shaft 3a with bolt etc. on the end (upper end) of rotating shaft 3a constitutes.
Rotating shaft 3a is cylindric, and its profile is the outstanding respectively step shape in bead shape ground.In addition, rotating shaft 3a with its inner peripheral surface serve as the axle use through hole 3c, and concentric circles be configured in the accommodating chamber 2a of frame 2.
Circular table 3b is the workbench that on lathe, is used to place processing work, and it is shaped as the outstanding bead shape shape from rotating shaft 3a, is provided with this workbench that is communicated with through hole 3c at the central part of radial direction and uses through hole 3d.
Among the figure, accommodate the plate 22 of the ring-type on the inner circumferential portion that is fixed on frame 2 with bolt etc. at the space segment 21a of lower side and be embedded in the plate 22 of ring-type and the seal member 23 of the ring-type between the rotating shaft 3a.
Accommodate rotating driving device 6 from following second several space segment 21b.Rotating driving device 6 has used worm mechanism, and it is made up of worm gear 6a, worm screw 6b and not shown servomotor, and the outside with worm gear 6a is fixed on rotating shaft 3a makes the outside engagement of worm screw 6b and worm gear 6a.In addition, between the axis direction of rotating shaft 3a and worm gear 6a, accompany the clearance component 6c of adjustment engagement usefulness, through the clearance component 6c of employing suitable thickness, thereby the position of the axis direction of adjustment worm gear 6a makes it be in the state of suitable engagement.In addition, on worm screw 6b, be connected with not shown servomotor output shaft, the sub-degree angle of rotating shaft 3a (circular table 3b) is controlled through the drive amount of servomotor.
Accommodate bearing 4 from following several the 3rd space segment 21c.What bearing 4 was concrete is horizontal roller bearing, the bearing of roller that has been not shown configuration between inner ring 4a and outer ring 4b, and symbol 4c is the pressing plate that is used for fixing outer ring 4b.
The space segment 21d of remaining the top accommodates first example of clamping device 5 at last.First example of clamping device 5 is by being fixed on the closing sleeve 7 on the frame 2 with an end (among the figure for upper end), and makes the deformation force of its distortion produce mechanism's 8 formations to the other end (be the bottom among the figure) power of applying of closing sleeve 7 vertically.The spatial accommodation that the space segment 21d of the top is a closing sleeve 7 with its upside space, and be the spatial accommodation that deformation force produces mechanism 8 with its lower side space.
The piston 8b that deformation force produces the hydraulic cylinder chamber 8a1 of runner 8a that mechanism 8 uses by the fluid that frame 2 in, forms and the secondary side end that is configured in runner 8a constitutes.Piston 8b is that the one-sided cross section of axis direction is I-shaped ring, and the recess 8b1 that on its bottom surface, will become hydraulic pressure chamber makes concentric circles, and O shape circle is mounted in the groove of inner circumference portion and outer circumference portion.The place that O shape circle 9 also is used for except that piston 8b is in case leak-stopping is oily.In addition, hydraulic cylinder chamber 8a1 is equivalent to the lower side space of the space segment 21d of the top.
Closing sleeve 7 is made up of following each several part: be contained in to concentric circles the cylindrical portion 71 in the upside space (annulus) of space segment 21d of the top; From an end of cylindrical portion 71 fixed part 72 of outstanding bead shape laterally; The endless groove 73 that on the outer circumference surface of cylindrical portion 71, along the circumferential direction forms continuously; Be positioned at and the clamping areas 74 of the opposite one side of endless groove 73 the deformable thinner wall section 75 that between clamping area 74 and endless groove 73, is had and at the deformation force service portion 76 of the heavy wall that the other end had of cylindrical portion 71.
On the other hand, have in the bottom of circular table 3b from the lower end of outer circumference surface 3h to the inboard circular end face 3f that extends of radial direction and with respect to outer circumference surface 3h with the step-like barrel portion 3g that extends to axial downside; Barrel portion 3g is formed with and is arranged to diameter first outer circumference surface 3j and diameter than the external diameter of this first outer circumference surface 3j smaller second outer circumference surface 3m to axial downside extension littler than the external diameter of outer circumference surface 3h; The part of the second outer circumference surface 3m constitutes clamped 3e of closing sleeve 7 clampings of stating behind the quilt.
On the other hand, closing sleeve 7 is assembled in the upper end of frame 2, and it is arranged to can the barrel portion 3g of circular table 3b to be inserted in the inboard of cylindrical portion 71 of closing sleeve 7.In addition, the second outer circumference surface 3m of circular table 3b, an in other words clamped 3e after under the stable state stated, the smaller what is called of diameter of the clamping area 74 of constituent ratio closing sleeve 7 is dodged face, thus make its with clamping area 74 between do not contact.
The cylindrical portion 71 of closing sleeve 7 is made heavy section with its both ends (upper end and bottom), and the zone between both ends is provided with from the recessed endless groove 73 of outer circumferential side, thereby forms through drawing fixed thinner wall section 75 with the inner peripheral surface of cylindrical portion 71.The inner peripheral surface of the heavy section of cylindrical portion 71 is arranged to, axial part zone and the outer circumference surface of circular table 3b between have small gap.On the first outer circumference surface 3j of the barrel portion 3g of circular table 3b; Near the central authorities of axial, relatively be processed with the export-oriented groove 3k that along the circumferential direction extends with cylindrical portion 71; Order according to O shape circle 9, ring 71b is embedded into them among the export-oriented groove 3k respectively, and the inner peripheral surface that the outer circumference surface that will encircle 71b is arranged to the heavy section of cylindrical portion 71 is very slight contacting.Because the inner peripheral surface of cylindrical portion 71 is very slight with contacting of the outer circumference portion of encircling 71b, thereby do not hinder the rotation of rotating shaft 3a.In addition, the cylindrical portion 71 of closing sleeve 7 and the border of fixed part 72 are clearly divided, so long as an end of cylindrical portion 71 is the degree of the part of formation endless groove 73, it is also no problem that the part of more leaning on upside is by comparison held as fixed part 72.
In order not hinder the rotation of circular table 3b, the bottom of cylindrical portion 71 and the second outer circumference surface 3m of circular table 3b between, be preferably in and the inner peripheral surface of frame 2 between also very close to each other.
Fixed part 72 is when observing its cross sectional shape, and its radial direction Outboard Sections is made more outstanding than circular table 3b, and that its radial direction inside part is made is relative with the first outer circumference surface 3j of circular table 3b.The radial direction Outboard Sections of fixed part 72 is by means of being fixed on the frame 2 across a plurality of bolts that are provided with at interval etc. at circumferencial direction.In addition, the upper surface of fixed part 72 and the end face 3f of circular table 3b between be provided with the minim gap that does not hinder the rotation degree.In order to prevent that foreign matters such as powdery smear metal from getting into from this gap; On the end face 3f of the upper surface of fixed part 72 and circular table 3b, be concentric shape ground relative to one another and form the first groove 72a, the second groove 72b respectively; Process the other ring 72c that extends across the first groove 72a and the second groove 72b with materials such as for example synthetic resin, and when being embedded among the second groove 72b and the slight state of contact in bottom of the opposing party's the first groove 72a holding this ring 72c.In addition, on the upper surface of frame 2, form stage portion 2b, and O shape circle 9 is configured between the lower surface of stage portion 2b and fixed part 72, thereby prevent that foreign matter such as powdery smear metal from getting into wherein or leakage of oil from this gap.
Clamping area 74 forms the inner circumference portion of thinner wall section 75, and all the other and endless groove 73 are not same shape except having R.Say in the upper and lower end parts strictness in the clamping area 74 and be not the part that clamps but dodge face 75b.
First condition is: above-mentioned medium line 75a is divided into 5 regional A-E along axis direction 5 five equilibriums; With 5 zones from one end to the other side as end regions A, zone line B, middle section C, zone line D and end regions E; Be formed on the rotary body radial direction medium line 75a in each zone is carried out 3 average mean trajectorys; The distance L A-LE of mean trajectory that each is regional and clamped 3e of rotary body 3 is according to distance L B, the LD of distance L C, zone line B and the middle section D of middle section C, and the distance L A of end regions A and end regions E, the order of LE increase.Like this, if 75 effects make its power in the compression direction distortion to the thinner wall section of closing sleeve 7, then thinner wall section 75 produces distortion, makes the curvature of medium line 75a in whole zone change once more.
Second condition is: the variation delta A-Δ E of the rotary body radial direction of the medium line 75a in 5 zones is according to the variation delta C of middle section C; The variation delta B of zone line B and zone line D, Δ D, the variation delta A of end regions A and end regions E, the order of Δ E increase.Have again,, thinner wall section 75 is out of shape more reliably in whole zone through such setting.
In addition, the thinner wall section 75 of Fig. 1 also we can say the bottom surface of endless groove 73 and clamping area 74 is provided with, thereby makes the medium line 75a in the whole zone of its axis direction be all continuous arciform curve shapes.
Deformation force service portion 76 is the parts that are equivalent to the other end of cylindrical portion 71, is provided with its inner circumference portion and outer circumference portion from circular table 3b and frame 2 across the gap.The deformation force service portion is configured in the piston 8b compression of its lower surface, but since inside and outside all gapped, then move up and down easily.In addition; Use steel alloy that the frame for movement that for example contains nickel and chromium etc. uses through making such as cut as the metal material of closing sleeve 7 and piston 8b, use machinery knot for example to make through cut with the steel or the cast iron of carbon steel etc. as the metal material of circular table 3b and frame 2.
First example of above-mentioned clamping device 5, if the pressure with regulation is oily from the lateral runner 8a supply pressure of frame 2 when clamping, then piston 8b rises; The deformation force service portion 76 of compression closing sleeve 7; Thinner wall section 75 effects to closing sleeve 7 make its power along the compression direction distortion, for the medium line 75a that makes thinner wall section 75 satisfies above-mentioned first condition, owing to be provided with the bottom surface and the clamping area 74 of endless groove 73; Thereby if be compressed the power of direction; Then thinner wall section 75 distortion makes the curvature of medium line 75a in whole zone further diminish, under this deformation state; the clamping area 74 of thinner wall section 75 advance and retreat reliably near the direction of clamped 3e of rotary body 3, final because its distortion and clamp clamped 3e from periphery.The oil pressure of supplying with to runner 8a is set at thinner wall section 75 not because of the degree of deformation force buckling or bending.
On the other hand; When unclamping if discharge the pressure of the hydraulic oil of supplying with to runner 8a; The compression that has then reduced to act on thinner wall section 75 through piston 8b to active force, piston 8b is owing to the recuperability of closing sleeve 7 (thinner wall section 75) descends, thinner wall section 75 distortion; Make the curvature of medium line 75a in whole zone return to original big state, the clamping area 74 of thinner wall section 75 is retreated and is made rotating shaft 3a be in rotatable state from clamped 3e of rotary body 3.Fig. 1 representes the stable state of clamping device 5, expression be that clamping area 74 is in each other with clamped 3e and leaves under the state that piston 8b descends, the perhaps releasing orientation of contact very slightly.
Clamping device 5 second for example shown in Figure 3, closing sleeve 7 is made the split part with fixed part 72 and cylindrical portion 71.It is the L font to the one-sided cross section that cylindrical portion 71 has been given prominence to that fixed part 72 is made the radial direction inside part, and it is the interior lateral body 71c and the inside and outside face-to-face one-sided cross section tubbiness of being of outer lateral body 71d that makes the left-right symmetric shape that cylindrical portion 71 is designed to one-sided cross section.The shape of interior lateral body 71c is equivalent to the shape of the cylindrical portion 71 of first example.
Second example of above-mentioned clamping device 5 when clamping with the pressure of regulation to runner 8a supply pressure oil, lateral body 71c was out of shape to compression direction with outer lateral body 71d in the rising through piston 8b made.This deformation state is to expand with the outside respectively to the inside in the tubbiness cross section of interior lateral body 71c and outer lateral body 71d, and clamped the 3e of interior lateral body 71c clamping rotating shaft 3a, and outer lateral body 71d side and frame 2 driving fits are with lateral body 71c in the axial two end supports.Fig. 3 representes usual state, expression be along with the decline state that is released in piston 8b of oil pressure is in releasing orientation down.
Clamping device 5 the 3rd for example shown in Figure 4; Closing sleeve 7 is made single piece with piston 8b; And utilize the restoring force of thinner wall section 75 in the occasion of usual state; Make circular table 3b always be in clamped condition, and the other end (the opposite side of cylindrical portion) that is aided with from piston 8b is oily to runner 8a supply pressure.In a word, closing sleeve 7 is in circular table 3b is carried out the so-called state that cooperates clamping, and then can obtain suitable clamping force through suitable supply pressure oil as required.In addition, in the occasion of unclamping circular table 3b with thinner wall section 75, then to runner 8a release pressure oil, and oily from unclamping of communicating with the end (cylindrical portion 71 1 sides) of piston 8b with passage 8c supply pressure.Unclamp with passage 8c and runner 8a and be formed at separatedly in the frame 2.What in addition, Fig. 4 represented is the state that unclamps.
Clamping device 5 the 4th for example shown in Figure 5, itself and the 3rd routine dissimilarity are: the shape of the thin-walled 75 of closing sleeve 7 is made the one-sided cross section wave-like that wall thickness everywhere changes to some extent, the many places clamping point is arranged on axis direction.
The thinner wall section 75 here be designed on the circumferential part and outer circumference portion within it all with the cross section be the sulculus 75c of C font make concentric circles and along axis direction across zigzag at interval (different each other).Be that the inner circumference portion of thinner wall section 75 across sulculus 75c is set at interval symmetrically, will more lean on end one side to form lambdoid prominent place, one-sided cross section in the axis direction both sides than sulculus 75c if be described in detail then.It is arc that the outer circumference portion of thinner wall section 75 forms one-sided cross section, and be provided with sulculus 75c in axis direction central authorities.
Closing sleeve 7 is as shown in Figure 6, and several variation are arranged.And, except Fig. 6 (c), hatching is omitted for clearly representing medium line 75a.The closing sleeve 7 of Fig. 6 (a) is provided with towards the inclination angle that opening one side enlarges different with the closing sleeve 7 of first example for the lateral circle surface of endless groove 73.The thinner wall section 75 of closing sleeve 7 forms circular or oval-shaped arcuation.
The closing sleeve 7 of Fig. 6 (b) the only inner circumference portion in thinner wall section 75 different with the closing sleeve 7 of Fig. 6 (a) across being provided with a plurality of sulculus 75c at interval along axis direction with being concentric circles.Though sulculus 75c cross section in the drawings is the C font, also can be other shapes such as dihedral, wedge shape.
The closing sleeve 7 of Fig. 6 (c) is on thinner wall section, and is different with the closing sleeve 7 of Fig. 6 (a) uniformly-spaced to be provided with the slit 75d that extends along axis direction at the circumferencial direction of cylindrical portion 71.This through be provided with a plurality of slit 75d that extend vertically at circumferencial direction; Perhaps as Fig. 6 (b), Fig. 6 (c) or after establish groove at circumferencial direction Fig. 6 (d) of stating, clamping area 74 is carried out to the distortion near the direction of clamped 3e of rotary body 3.
The closing sleeve 7 of Fig. 6 (d) not only also is provided with a plurality of sulculus 75c on the inner peripheral surface of thin-walled 75 but also on outer circumference surface different with the closing sleeve 7 of Fig. 6 (b).
The closing sleeve 7 of Fig. 6 (e) is made the waveform that does not have wall thickness difference with thinner wall section 75, with roughly uniformly wall thickness form different with the 4th routine employed closing sleeve 7 of clamping device 5.
The closing sleeve 7 of Fig. 6 (f) is made the clamping area parallel with axis direction 74 with the inner circumference portion of thinner wall section 75, and be provided with the groove width of endless groove 73 equably at depth direction different with the closing sleeve 7 of Fig. 6 (a).
The closing sleeve 7 of Fig. 7 assembles a plurality of parts of ring-type as a whole up and down abreast, except bolt, has used 5 part 7a-7e.First part 7a right in the middle is a cylindric thin plate ring originally, is fixed on through the upper and lower end parts with its axis direction to constitute the mid portion that makes axis direction on other part and fall in the thinner wall section 75 that becomes one-sided cross section arcuation towards axis direction.The second bigger part 7b of the top, its major part is a fixed part 72, remainder is the pedestal that holds the inner peripheral surface of an end of cutting the thin plate ring.It from last the 3rd several second part 7c the fixture of outer circumference surface of an end of control thin plate ring.The second part 7b and the 3rd part 7c are through being held in an end clips of thin plate ring between two part 7b, the 7c with bolt; Be not only fixed part 72; An and end of formation cylindrical portion 71; On an end that forms the thin plate ring between two part 7b, the 7c, keep space 7f, and make the shape of an end of the shape that keeps space 7f and thin plate ring identical.The 4th part 7d of below is the pedestal of inner peripheral surface that carries the other end (illustrated bottom) of thin plate ring.In addition, from following the 5th several second part 7e be the fixture of outer circumference surface of the other end of control thin plate ring.Quaternary part 7d and the 5th part 7e are through constituting deformation force service portion 76 with bolt; In addition; Between the 4th part 7d and the 5th part 7e, form the following maintenance space 7g of the laminal other end, and make down the shape of the other end of the shape that keeps space 7g and thin plate ring identical.
The present invention is not limited to above-mentioned embodiment.For example; Clamping is positioned at inboard rotating shaft 3a from the outside though the foregoing description is designed to utilize closing sleeve 7; But also go for their internal and external relation is made opposite indexing means 1, soon the rotating shaft 3a of this rotary body 3 is designed to cylindric and utilizes the indexing means 1 of closing sleeve 7 from this rotating shaft of inboard clamping 3a.In addition, though the driving of rotary body 3 uses worm mechanism to drive indirectly, also can use direct driving mechanism, promptly what is called is assembled in the DD motor in the space between rotating shaft 3a and the frame 2.
In addition, separator 1 takes place to have a power failure when it uses and occasion that hydraulic pressure is reduced, in order to make stopping of rotating shaft 3a rotational automaticly, also can use the clamping device 5 that adopts with the same so-called chimeric fastening structure of above-mentioned the 3rd example, the 4th example.
In addition, indexing means 1 is not limited to index table, also goes for the so-called U type main spindle box (main spindle box that instrument is installed is carried out the machining spindle case that calibration drives) of five axis processing machine beds.
Claims (8)
1. closing sleeve has: the endless groove (73) that be configured in cylindrical portion (71) in the annulus (21d) between rotary body (3) and the frame (2), in the inner circumference portion of cylindrical portion or outer circumference portion, be arranged on the clamping area (74) of the circumferential section relative with rotary body, is provided with at the circumferential section with the opposite side of circumferential section of the cylindrical portion that clamping area is set along circumferencial direction continuously, drawn fixed thinner wall section (75), be arranged at the fixed part to frame (72) of an end of cylindrical portion by the bottom surface of clamping area and endless groove; It is characterized in that,
Be provided with the deformation force service portion (76) of the power of bearing the compression direction that is applied on the axis direction or draw direction in the other end of cylindrical portion;
At clamped (3e) of supposition rotary body be under the situation with the face of parallel axes; the shape of thinner wall section forms; the track of the intermediate point of the wall thickness in the cross section of above-mentioned axis direction, and promptly the medium line in the whole zone of axis direction (75a) is the shape that satisfies first condition;
First condition is: above-mentioned medium line is divided into 5 zones of on axis direction, carrying out 5 five equilibriums; 5 zones are decided to be middle section, zone line, end regions from the mediad end; Be formed on the rotary body radial direction medium line in each zone has been carried out average mean trajectory, clamped distance of mean trajectory that each is regional and rotary body increases according to the order of middle section, zone line, end regions.
2. closing sleeve according to claim 1 is characterized in that:
The medium line that the shape of thinner wall section forms the whole zone of axis direction satisfies the shape of second condition,
Second condition is: the variable quantity of the rotary body radial direction of the medium line in 5 zones increases according to the order of middle section, zone line, end regions.
3. closing sleeve according to claim 2 is characterized in that:
The bottom surface of endless groove or clamping area are arranged to make the medium line in whole zone of the axis direction of thinner wall section to be whole continuous curve shape.
4. according to any one described closing sleeve among the claim 1-3, it is characterized in that:
The bottom surface of endless groove be arranged to along with from the two ends of thinner wall section towards the center and near clamped of rotary body.
5. closing sleeve according to claim 4 is characterized in that:
Clamping area be arranged to along with from the two ends of thinner wall section towards the center and near clamped of rotary body.
6. according to any one described closing sleeve among the claim 1-3, it is characterized in that:
On thinner wall section at circumferencial direction across being interval with a plurality of slits (75d).
7. the clamping device of an indexing means, by the closing sleeve (7) in the annulus (21d) that is contained between rotary body (3) and the frame (2) with the deformation force of closing sleeve active force is produced mechanism (8) constitute,
Closing sleeve has: the endless groove (73) that be configured in cylindrical portion (71) in the annulus, in the inner circumference portion of cylindrical portion or outer circumference portion, be arranged on the clamping area (74) of the circumferential section relative with rotary body, is provided with at the circumferential section with the opposite side of circumferential section of the cylindrical portion that clamping area is set along circumferencial direction continuously, drawn fixed thinner wall section (75), be arranged at the fixed part to frame (72) of an end of cylindrical portion by the bottom surface of clamping area and endless groove; It is characterized in that,
Closing sleeve is provided with the deformation force service portion (76) that bears the power that is applied to the draw direction on the axis direction in the other end of cylindrical portion;
At clamped (3e) of supposition rotary body be under the situation with the face of parallel axes; the shape of thinner wall section forms; the track of the intermediate point of the wall thickness in the cross section of above-mentioned axis direction, and promptly the medium line in the whole zone of axis direction (75a) is the shape that satisfies first condition;
First condition is: above-mentioned medium line is divided into 5 zones of on axis direction, carrying out 5 five equilibriums; 5 zones are decided to be middle section, zone line, end regions from the mediad end; Be formed on the rotary body radial direction medium line in each zone has been carried out average mean trajectory, clamped distance of mean trajectory that each is regional and rotary body increases according to the order of middle section, zone line, end regions;
Under the state of closing sleeve in being contained in annulus; Produce mechanism when draw direction applies the power of ormal weight to the deformation force service portion by means of deformation force, the direction that the clamping area of thinner wall section leaves towards the clamped face from rotary body is retreated and is made rotary body be in releasing orientation;
When discharging when producing mechanism to deformation force service portion applied force from deformation force, then the clamping area of thinner wall section is because restoring force and advance and make rotary body be in clamped condition towards clamped direction of extruding rotary body.
8. the clamping device of an indexing means; By the closing sleeve (7) in the annulus (21d) that is contained between rotary body (3) and the frame (2) with the deformation force of closing sleeve active force is produced mechanism (8) constitute; Closing sleeve has: be configured in the cylindrical portion (71) in the annulus; In the inner circumference portion of cylindrical portion or outer circumference portion, be arranged on the clamping area (74) of the circumferential section relative with rotary body, with folder is set
The endless groove (73) that the circumferential section of the opposite side of circumferential section of the cylindrical portion of tight face is provided with along circumferencial direction is continuously drawn fixed thinner wall section (75) by the bottom surface of clamping area and endless groove, is arranged at the fixed part to frame (72) of an end of cylindrical portion; It is characterized in that,
Closing sleeve is provided with the deformation force service portion (76) that bears the power that is applied to the compression direction on the axis direction in the other end of cylindrical portion;
At clamped (3e) of supposition rotary body be under the situation with the face of parallel axes; the shape of thinner wall section forms; the track of the intermediate point of the wall thickness in the cross section of above-mentioned axis direction, and promptly the medium line in the whole zone of axis direction (75a) is the shape that satisfies first condition;
First condition is: above-mentioned medium line is divided into 5 zones of on axis direction, carrying out 5 five equilibriums; 5 zones are decided to be middle section, zone line, end regions from the mediad end; Be formed on the rotary body radial direction medium line in each zone has been carried out average mean trajectory, clamped distance of mean trajectory that each is regional and rotary body increases according to the order of middle section, zone line, end regions;
Under the state of closing sleeve in being contained in annulus; Produce mechanism when compression direction applies the power of ormal weight to the deformation force service portion by means of deformation force, the clamping area of thinner wall section is before near clamped direction of rotary body and then make rotary body be in clamped condition;
When discharging when producing mechanism to deformation force service portion applied force from deformation force, then the clamping area of thinner wall section is because restoring force and retreat and make rotary body be in releasing orientation towards the direction that the clamped face from rotary body leaves.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-303152 | 2007-11-22 | ||
| JP2007303152 | 2007-11-22 | ||
| JP2007303152A JP5113499B2 (en) | 2007-11-22 | 2007-11-22 | Clamp sleeve and indexing device clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101439482A CN101439482A (en) | 2009-05-27 |
| CN101439482B true CN101439482B (en) | 2012-07-25 |
Family
ID=40724163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101823161A Expired - Fee Related CN101439482B (en) | 2007-11-22 | 2008-11-21 | Clamping sleeve and clamping device of indexing mechanism |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5113499B2 (en) |
| KR (1) | KR20090053678A (en) |
| CN (1) | CN101439482B (en) |
| TW (1) | TWI430866B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102672285A (en) * | 2011-03-16 | 2012-09-19 | 大连瑞谷科技有限公司 | Clamping device for numerical control gear shaping machine to machine sector gear shaft |
| JP5341969B2 (en) * | 2011-10-28 | 2013-11-13 | 株式会社日研工作所 | Brake structure of rotary table device |
| JP6095435B2 (en) * | 2013-03-27 | 2017-03-15 | 株式会社北川鉄工所 | Indexing table |
| KR101630972B1 (en) * | 2014-12-03 | 2016-06-15 | 김재우 | A indexing table apparatus |
| CN106378636B (en) * | 2016-09-30 | 2018-06-01 | 西安长峰机电研究所 | Slip revolving platform embraces folder automatic open device |
| KR102299149B1 (en) * | 2020-10-30 | 2021-09-07 | 덕흥 주식회사 | Machine tools of multi point clamping type |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3663027A (en) * | 1970-09-14 | 1972-05-16 | Ingersoll Milling Machine Co | Fluid actuated clamp |
| US5855446A (en) * | 1995-02-01 | 1999-01-05 | Etp Transmission Ab | Hydraulic clamp bushing having sigma shaped bushing ends |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08294835A (en) * | 1995-04-26 | 1996-11-12 | Enshu Ltd | Clamp device of index table |
| JP4632072B2 (en) * | 2000-10-02 | 2011-02-16 | 豊和工業株式会社 | Index table |
| JP4538292B2 (en) * | 2003-10-17 | 2010-09-08 | 株式会社三共製作所 | Tilting rotary table device |
| JP2006035391A (en) * | 2004-07-28 | 2006-02-09 | Nippei Toyama Corp | Table device and clamp sleeve used for table device |
| JP4585386B2 (en) * | 2005-06-16 | 2010-11-24 | キタムラ機械株式会社 | Rotary table device |
| JP4215768B2 (en) * | 2005-11-29 | 2009-01-28 | 株式会社日研工作所 | Brake mechanism of rotary table |
-
2007
- 2007-11-22 JP JP2007303152A patent/JP5113499B2/en active Active
-
2008
- 2008-09-15 TW TW097135358A patent/TWI430866B/en not_active IP Right Cessation
- 2008-09-19 KR KR1020080092294A patent/KR20090053678A/en active IP Right Grant
- 2008-11-21 CN CN2008101823161A patent/CN101439482B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3663027A (en) * | 1970-09-14 | 1972-05-16 | Ingersoll Milling Machine Co | Fluid actuated clamp |
| US5855446A (en) * | 1995-02-01 | 1999-01-05 | Etp Transmission Ab | Hydraulic clamp bushing having sigma shaped bushing ends |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20090053678A (en) | 2009-05-27 |
| CN101439482A (en) | 2009-05-27 |
| JP5113499B2 (en) | 2013-01-09 |
| TWI430866B (en) | 2014-03-21 |
| TW200924901A (en) | 2009-06-16 |
| JP2009125858A (en) | 2009-06-11 |
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