CN1883877A - Work piece centering device and method of broaching - Google Patents
Work piece centering device and method of broaching Download PDFInfo
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- CN1883877A CN1883877A CN 200610094054 CN200610094054A CN1883877A CN 1883877 A CN1883877 A CN 1883877A CN 200610094054 CN200610094054 CN 200610094054 CN 200610094054 A CN200610094054 A CN 200610094054A CN 1883877 A CN1883877 A CN 1883877A
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Abstract
A device for centering a work piece with respect to a centerline of a tool includes a radially-stationary component rigidly secured with respect to the tool such that the radially-stationary component and the tool are concentric. A biasing mechanism is biased away from the radially-stationary component to apply substantially equally-distributed radial force at a periphery of the work piece to thereby center the work piece with respect to the tool. A method of broaching a work piece having an inner and an outer diameter includes machining the outer diameter and then applying circumferentially-distributed radial force to the inner diameter or the outer diameter to thereby center the work piece with respect to a broach tool. After the applying step, the method includes broaching the inner diameter of the work piece using the broach tool.
Description
The mutual reference of related application
The application requires to enjoy the U.S. Provisional Application No.60/692 that 2005.06.22 submits to, 936 priority, and this application is quoted by the whole reference of this paper.
Technical field
The present invention relates to the centring means of workpiece, specifically, make the device of workpiece exactly with respect to instrument such as broach tool centering.The invention still further relates to a kind of broaching method.
Background of the present invention
The quality of made parts and performance are directly relevant with the specification requirement that whether meets part.Specification requirement meet and be subjected to dimensional tolerance or the accumulative total effect in " gap " or the influence of each that a plurality of manufacturing process that these parts go through and different technologies require.For example generally form the internal gear cutting or obtain preliminary interior diameter hole and overall diameter with additive method.The overall diameter of gear stands the broaching process then, and interior diameter stands the internal broaching process subsequently.Because these two processes all are guide's operations, wherein broach tool is vertically by parts, and the predetermined tolerance before broaching on the interior diameter is very little so that guarantee accumulation with the tight fit and the error reduced in size of instrument.In fact under the minimum acceptable interior diameter of workpiece, the diameter of broach tool guide portion generally has only the tolerance of 0.030mm-0.050mm.Can increase the expense of parts to the needs of very little dimensional tolerance.In addition, after the process of externally broaching and before inside broaching process, the interior diameter hole of parts is generally by the i.e. cutting again of turning, so that guaranteeing that endoporus and the outer dia of being broached recently have can received concentricity.This processing step that adds involves sizable capital cost.If can be with the concentricity of a small amount of processing step control interior diameter, overall diameter and broach tool, the service behaviour of finishing workpiece so can improve and the parts number scrapped can reduce.
Summary of the present invention
The centring means that is provided can be determined the center of part with respect to broach tool, thereby can improve concentricity and reduce the influence of accumulating site error on the completion parts.Specifically, centring means comprises one, and this member is fixed securely with respect to instrument at fixed component radially, makes this in the radially fixed component and the same center of circle of this instrument.This centring means also comprises an offsetting mechanism (this mechanism can be a spring or a piston hydraulic pressure or pneumatic), this mechanism is applied to equally distributed substantially radial load on the side face of this workpiece, thereby makes this workpiece with respect to this instrument centering before processing this workpiece with this toolroom machine.The side face of the workpiece that this centring means acted on can be on the interior diameter or on the overall diameter.This overall diameter for example can be the diameter of external gear teeth inner groovy.This centring means can utilize hydraulic pressure or air pressure on one's own initiative, or utilizes one or above spring passive ground to determine the center of workpiece.
This centring means makes us can be with improved method broaching workpiece.The overall diameter of workpiece can be at first by machined (as peripheral surface broach broaching, castellation scraping, hobbing or turning) so that form the profile of needs.Then this workpiece is delivered to broach tool, reduce this broach tool and make the guide portion of this instrument pass this workpiece.This centring means is determined the center of workpiece with respect to this instrument.Next just can make the working portion of this instrument move the interior perimeter surface of crossing this workpiece broaches to the interior diameter of this workpiece.The intermediate steps that behind this overall diameter of machined, just no longer needs turning or cut this workpiece interior diameter more like this.
Above-mentioned these and other some characteristics of the present invention and advantage read below in conjunction with accompanying drawing to the detailed description of implementing optimal mode of the present invention and doing after when understanding easily.
Brief description of drawings
Fig. 1 one has the general perspective of the internal gear of external splines;
Fig. 2 one is used for determining that workpiece cuts elevation view open with respect to the part of the centring means at the interior diameter center of broach tool;
Fig. 3 is the partial sectional view of centring means among Fig. 2;
Fig. 4 is the partial sectional view of second embodiment that is used for determining with respect to the interior diameter of broach tool the centring means of workpiece centre;
Fig. 5 one is used for determining that with respect to the overall diameter of broach tool the part of the 3rd embodiment of the centring means of workpiece centre severs elevation view;
Fig. 6 is the partial sectional view of centring means among Fig. 5;
Fig. 7-10 is respectively the partial sectional view of the 4th, the 5th, the 6th, the 7th embodiment that is used for determining with respect to the overall diameter of broach tool the centring means of workpiece centre.
The explanation of preferred embodiment
Consult accompanying drawing, wherein identical label refers to identical parts.The parts 10 of completion shown in Figure 1 are that an internal gear has spline 12 and have internal tooth 14 on inner peripheral surface through the processing back on the outer peripheral face.In order to control quality, importantly internal tooth 14 must be concentric with external splines 12.Other parts with similar concentric requirement still have and have the external gear that the castellation scraping goes out some internal gears of keyway or has internal spline on the terminations.The centring means that the following describes can be used on the workpiece of any one parts, when these parts have by mach overall diameter (for example overall diameter lives through any known machining process such as peripheral surface broach broaching, castellation scraping, hobbing or turning) and need the interior diameter of a broaching.
First embodiment of centring means
Consult Fig. 2, this illustrates an interior diameter (10) centring means 16 for feeling relieved as still uncompleted parts among Fig. 1 of workpiece, and the unfinished state of this workpiece will be marked by 10 here.This ID centring means just must make this workpiece 10 and its centering with respect to the center line 18 of broach tool 20 before this instrument 20 carries out broaching on the next interior diameter 22 at this workpiece 10 ' of axially-movable operation.This also can be used on the bore hole that takes place before the interior diameter broaching operation or turning operation and processes this interior diameter 22 and accomplish.Preferably the overall diameter 26 of this workpiece 10 ' has lived through a machining processes (as peripheral surface broach broaching, castellation scraping, hobbing, turning etc.) so that form a surface with machined of Fig. 1 China and foreign countries teeth groove 12.Perhaps, the manufacturing procedure of this overall diameter was once given the tooth of other surface characteristics such as outside or extended vertically on the overall diameter of this workpiece castellation key (spline), this is also within the scope of the invention.
This ID centring means 16 is an annular, and around the guide portion 19 of this instrument 20.Have a holding device 24 be fixed tightly in this instrument 20 around, and this ID centring means is fixed on way on this instrument 20 is that this device 16 is clamped on the axial location on these instrument 20 shoulders 27.Like this, this centring means 16 will move vertically with instrument when this instrument 20 descends by workpiece 10 ', and the surfaces that the operate portions 29 of this instrument 20 is processed on interior diameter 22.This holding device 24 can be the chuck of an amalgamation.A wedge-like lock dog, a nut (as shown in the figure) that has ground thread and keep screw, or any other known maintenance facility that 16 pairs of these instruments of this centring means 20 are accurately located.
Consult Fig. 3 now, this ID centring means 16 comprises a substrate 30 and the keeper with top 32A and bottom 32B, and two parts of keeper all use securing member 34 to be fixed on the substrate 30.Substrate 30, top 32A and bottom 32B are the radially fixed components that is fixed with respect to this instrument 20, and owing to they all grind by tight tolerance, all with these instrument 20 same centers of circle.If outside retention nut, adopt the holding device of other patterns, so also dimensional tolerance that can be tight and guarantee concentricity with for example reliable locking device.In the time of on being fixed to substrate 30, top 32A and bottom 32B form a groove 36 that has gradient in the axial direction between them apart from one another by opening.Between substrate 30 and maintaining part 32A, 32B, form a cavity 38 this moment.In this cavity 38, the wedge device 40 and 42 of top and bottom is respectively around substrate 30.The size of wedge device 40,42 is formulated so all can slide them vertically in this cavity 38.Should be known in that substrate 30, keeper 32A, 32B and wedge device 40,42 all are the ring-types around instrument 20.
Can adopt the contact element of centering ball 44 (shown in the figure one) to be perched between keeper 32A, 32B and wedge device 40,42, and on the circumference of this instrument 20 apart from one another by opening.There is a spring 46 (or a plurality of spring) to be seated between substrate 30 and the top wedge device 40.Can use annular waved spring or disk spring, or be used in a plurality of compression springs of opening along the circle spacing around this instrument 20 in the cavity 38.This spring 46 makes this top wedge device 40 to these bottom wedge device 42 skews.The wedge effect of this spring 46 oblique surface 48,50 of the wedge device 40,42 by contacting this ball 44 is respectively given this ball 44 with a radial load.This ball 44 is formulated like this with respect to the size of this groove 36 can give prominence to the part of this ball from this groove 36, outstanding degree can be crossed over the gap 52 (its size is the function of this workpiece 10 ' dimensional tolerance) that these interior diameter 22 (see figure 2)s are left this instrument 20 completely.Like this, this ball 44 just can contact it by 40,42 skews of spring 46 and wedge device and give workpiece 10 ' with a radially outside power at interior diameter 22 places.Owing to a plurality of balls 44 are arranged around this instrument 20, this radially outside power is distributed evenly at around workpiece 10 ' interior on 54, and acts on the axial plane P of workpiece 10 '.Like this, when each ball 44 was applied to radial load on the inner peripheral surface of workpiece 10 ', the effect of substrate 30 was just as a reaction member.Centering ball 44, wedge device 40,42 and spring 46 can be called as deflection mechanism.
Because this substrate 30 is concentric with this instrument 20, makes the interior diameter 22 of workpiece 10 ' concentric with instrument 20, can eliminate the tolerance build-up between instrument 20 and the interior diameter 22.In case workpiece 10 ' is concentric with instrument 20,, workpiece 10 ' is fixed on top chuck 56 and a part locator 58 as between the workbench just top chuck 56 can move down.Therefore, can carry out the broaching operation on interior diameter 22 subsequently and insert the turning operation of the concentricity be used for guaranteeing 22 pairs of instruments 20 of interior diameter in the middle of can not needing.Because instrument 20 is concentric with workpiece 10 ', will be concentric with interior diameter 22 by profile of tooth or details that instrument 20 is given.
Second embodiment of centring means
Fig. 4 illustrates interior diameter (ID) centring means 116 another embodiment, and this device is made an integral body with broach tool 120 in this example.This centring means 116 was determined the center of this workpiece 110 ' with respect to these instrument 120 center lines before workpiece 110 ' carries out the internal broaching operation.This workpiece 110 ' is through machining processes such as peripheral surface broach broaching, make spline on overall diameter 126.This ID centring means 116 comprises the keeper with top 132A and bottom 132B, and these two parts all are fixed on the instrument 120 with securing member 134.This two member relative concentricity is mutually guaranteed in the generation gap of instrument and centring means.Top 132A and bottom 132B are that they all are fixed with respect to instrument 120 and are concentric with instrument at fixed component radially.When on the instrument of being fixed on 120, top 132A and bottom 132B be in the axial direction apart from one another by opening, thereby ask at it and to form a groove 136 that has gradient.This instrument 120 is shaped on an oblique surface 148.Between instrument 120 and keeper 132A, 132B, form a cavity 138.One wedge device 142 is arranged around this instrument 120, its size is formulated like this, and it can be slided with respect to instrument 120 between near the shoulder 143 the skewed surface 148 of bottom 132B and instrument 120 in cavity 138 vertically.
Contact element is also referred to as centering ball 144 (illustrating) and perches at keeper 132A, 132B, falls between skewed surface 148 and the wedge device 142.There is a spring 146 (or a plurality of spring) to be seated between keeper bottom 132B and the wedge device 142.Can adopt annular waved spring or disk spring, or with around instruments 120 in this cavity 138 on circumference isolated a plurality of compression springs.This spring 146 makes this wedge device 142 fall skewed surface 148 skew to this.Wedge device 142 and the wedge effect of skewed surface 148 of falling are given ball 144 with a radial load.Centering ball 144, wedge device 142 and spring 146 can be called as offsetting mechanism.
This ball 144 is formulated like this with respect to the size of this groove 136, and a part of ball can be given prominence to from this groove 136, and outstanding degree can be crossed over the interior diameter 122 of workpiece 110 ' and the gap 152 that instrument 120 leaves completely.Like this, each ball 144 just can be given radially outer power interior diameter 122 places of workpiece 110 '.Owing to a plurality of balls 144 are arranged, just can be evenly distributed on the inner peripheral surface 154 of workpiece 110 ' from the radially outer power of these balls 144 around this instrument 120.These balls 144 are supported on the oblique surface 148 of instrument 120, so just can make the interior diameter 122 of this workpiece 110 ' concentric with this instrument 120.In case this workpiece 110 ' is concentric with this instrument 120,, this workpiece 110 ' is fixed between this top chuck 156 and part locator 158 as the workbench just top chuck 156 can move down.Therefore the broaching operation on interior diameter 122 just can be carried out subsequently, needn't guarantee the concentricity of 122 pairs of instruments 120 of interior diameter with the turning operation that insert the centre.Because this instrument 120 is concentric with this workpiece 110 ', will be concentric with this interior diameter 122 by profile of tooth or details that instrument 120 is given.
The 3rd embodiment of centring means
Consult Fig. 5, the 3rd embodiment and a broach tool 220 shown in it around the centring means 216 of workpiece 210 ' overall diameter (OD).This centring means 216 be rigidly fixed in one with the concentric top chuck 256 of this broach tool 220 on.Perhaps, but not shown, this centring means can be fixed on the part locator, and this locator can be a platform or another mechanical component.Such design can do with centring means 216 is fixed on the chuck 256 good equally because chuck 256 and part locator 258 all 220 concentric (instrument 220 can be regulated part 235 (below shown in Fig. 6 and explanation) with one with respect to the concentricity of centring means 216 and guarantee) with this instrument.
Consult Fig. 6, centring means 216 acts on the outer peripheral face 255 of workpiece 210 ' overall diameter 226 (overall diameter 226 is the interior diameters that form the teeth groove of workpiece 210 ' overall diameter) so that determine the center of this workpiece 210 ' with respect to center line 218 (see figure 5)s of this instrument 220.
OD centring means 216 comprises a substrate 230 and the keeper with top 232A and bottom 232B (these two parts all use securing member 234 to be fixed on the substrate 30) and cover plate 232C.Substrate 230, top 232A and bottom 232B are at fixed component radially, and it is fixing that they are conditioned part 235 with respect to chuck 256.This adjusting part 235 often is called as " rocking (stir-around) " and regulates part, can make the position of centring means 216 make manual radiai adjustment to guarantee this centring means 216 and these instrument 220 center lines 218 centering suitably with respect to chuck 256.This adjusting part can be a jackscrew (jack).Various alignment methods can be used to finish required aligning as can be used to guarantee the concentricity of centring means 216 and this instrument 220 with laser and regulate part 235.In the time of on being fixed on substrate 230, top 232A and bottom 232B form a groove 236 in the axial direction by apart from one another by opening between them.Between substrate 230 and keeper 232A, 232B, form a cavity 238.Top and bottom wedge device 240 and 242 are looped around keeper 232A, the 232B in the cavity 238 respectively.The size of wedge device 240,242 is formulated like this, and they can be slided in this cavity 238 vertically.Substrate 230, keeper 232A, 232B and wedge device 240,242 around instrument 220 (shown in Fig. 5) are annular.
Centering ball 244 (illustrating one) is perched between keeper 232A, 232B and wedge device 240,242.There is a spring 246 (or a plurality of spring) to be seated between substrate 230 and the top wedge device 240.Can adopt annular waved spring or disk spring, or in cavity 238, adopt around the instrument 220 a plurality of on circumference isolated compression spring.Spring 246 makes top wedge device 240 to 242 skews of bottom wedge device.The wedge effect that causes by spring 246 respectively by wedge device 240,242 contact with ball 244 one fall skewed surface 248,250 and give ball 244 radially inside power.There are a plurality of centering bolts 260 (illustrating) (being also referred to as contact element) to be placed on the radially inner place of each ball 244 in the cavity 238.The shoulder 262 of this bolt 260 is greater than this groove 236, so this bolt 260 can be kept by top and bottom 232A, 232B.The size of these bolt 260 heads 264 is formulated like this, makes when the radially inner masterpiece from this ball 244 is used on this bolt 260 this bolt can be outstanding in this groove 236.Between head 264 and top and bottom 232A, 232B, be provided with O-ring seal 265 and be used for preventing that rubbish from entering cavity 238 so that guarantee the accuracy of centring means.Head 264 is gone up the outer peripheral face 255 of contact workpiece 210 ' at overall diameter 226 (this diameter is the interior diameter of teeth groove on the outer peripheral face 255).Like this, this bolt 260 is just given this workpiece 210 ' with radially inner power on workpiece 210 ' overall diameter teeth groove 226.Owing to a plurality of balls 244 and bolt 260 are arranged around this workpiece 210 ', this radially inner power is distributed evenly on the outer peripheral face 255 of this workpiece 210 '.Like this, this substrate 230 just becomes by each ball 244 and each bolt 260 and gives the reaction bearing piece of the radial load of this workpiece 210 ' outer peripheral face 255.Centering ball 224, bolt 260, wedge device 240,242 and spring 246 can be called as offsetting mechanism.Because substrate 230 is concentric with instrument 220, the outer peripheral face 255 of workpiece 210 ' is made into instrument 220 concentric, so just eliminates the tolerance build-up between instrument 220 and overall diameter 226.Therefore workpiece 210 ' subsequently within it the broaching operation on the diameter 222 just can carry out, the turning operation in the middle of needn't inserting is guaranteed the concentricity of 222 pairs of overall diameters 226 of interior diameter because the outer peripheral face of workpiece 210 ' 255 with center line 218 centerings of workpiece.
The 4th embodiment of centring means
Consult Fig. 7, another embodiment of the OD centring means that wherein draws.As the embodiment among Fig. 6, the keeper with top 332A, bottom 332B and cover plate 332C is fixed on the chuck 356.Top 332A, bottom 332B and cover plate 332C are fixed components radially.Centring means 316 is regulated with respect to the position available adjustment part 335 of chuck 356 (chuck with broach tool (not shown) centering).There is a connector 366 that spring 346 is remained in the cavity 338 so that contact on the interior diameter of head 364 parts that make centering bolt 360 by a teeth groove of making at the groove 336 that forms between top and bottom keeper 332A and the 332B and with the outer peripheral face 355 of workpiece 310 ' thereon.As centering bolt 360, a plurality of springs 346 are spaced apart on workpiece 310 ' circumference on every side.Connector 366 can be an independent annular plug also can be a plurality of on circumference isolated connector.Seal 365 is used for preventing that rubbish from entering cavity 338 so that guarantee the accuracy of centring means.
The 5th embodiment of centring means
Consult Fig. 8, other embodiment of the centring means of OD shown in it 416.The function of centring means 416 is identical with centring means 216 among Fig. 6, is centering bolt of no use; But make the groove 436 that forms between top and bottom keeper 432A, the 432B have gradient, thereby make workpiece 410 ' centering so that make contact element or the overall diameter of centering ball 444 contact workpieces 410 '.There is a spring 446 on top and bottom wedge device, to apply tension force and this ball 444 is pressed on the workpiece 410 ' so that keep.Spring 446, centering ball 444 and wedge device 440,442 can be called as offsetting mechanism.The embodiment of Fig. 2-8 is " passive " centring means, and this is because the potential of storing in spring (being spring 46,146,246,346 or 446) can be finished the function of centering automatically.
The 6th embodiment of centring means
Consult Fig. 9, another embodiment of the centring means of OD shown in it.Substrate 530 and keeper 532 are regulated part 535 by one and are fixed on the chuck 556, and this chuck and broach tool (not shown) centering.Substrate 530 and keeper 532 all are fixed components radially.The position available adjustment part 535 of centring means 516 is regulated.The passage 570A, the 570B that are located in the substrate 530 can be applied on the piston 572 supply from the outside and controlled hydraulic pressure or air pressure, this piston 572 can be forced to vertically effect downwards (as will bigger pressure being applied in the passage 570A) and as same wedge device a contact element or collet chuck 574 be tightened up, or upwards effect (as will bigger pressure being applied in the passage 570B) will be on the overall diameter (actual is the interior diameter of made teeth groove it on) of workpiece 510 ' the contact workpiece 510 ' collet chuck 574 that is shaped on the outer peripheral face of tooth unclamp.This piston 572 and collet chuck 574 can be considered offsetting mechanism.Seal 565 is used to prevent that dust from contacting with the working part of rubbish with centring means 516.Different with the centring means 16,116,216,316 and 416 of former explanation, centring means 516 is " active " centring means.The meaning of " initiatively " centring means is that wherein applying of radial load is not (as using spring force) but must select to apply automatically.Because hydraulic pressure or air pressure are used to cause the radially inside power that acts on the piston,, can there be much bigger power that workpiece 510 ' is remained on the position of centering so compare with the design of using spring force.In addition, when carrying out the cutting stroke of broach tool, the size of the power of centering also can change or take away.
The 7th embodiment of centring means
Initiatively another embodiment of OD centring means 616 is shown in Figure 10.Substrate 630 and have top 632A and the keeper of bottom 632B is fixed on by on the chuck 656 of regulating part 635 and broach tool centering.Passage 670A in the substrate 630,670B the hydraulic pressure of outside supply or control or air pressure can be applied to force on piston or the wedge device 640 it vertically or downwards (if will bigger pressure be applied in the passage 670A) or upwards (if will bigger pressure be applied in the passage 670B) be applied to contact element with power or centering ball 644 (only illustrates one among the figure, but have a plurality of be distributed in workpiece 610 ' around) on, during the application of force by falling to fall on skewed surface 648 and the wedge device 642 effect of skewed surface 650, centering ball 644 is given prominence in the groove 636 that forms between top 632A and the bottom 632B, thereby on the interior diameter of the teeth groove of making on the workpiece 610 ', contacted with the outer peripheral face 654 of this workpiece 610 '.Adopt sealing ring 665 to prevent that dust from contacting with the working part of rubbish with this centring means 516.Substrate 630 and keeper 632A, 632B are radially fixing.Wedge device 640,642 and ball 644 can be called as travel mechanism.
Adopt any one centring means among Fig. 1 described above-10, the workpiece of having been broached on overall diameter can with the center line centering of broach tool.The function of the centering of centring means make this broach tool can be used to broach this workpiece interior diameter and can not need between machined overall diameter and broaching interior diameter this interior diameter of turning so that make it concentric with this overall diameter.
Method with workpiece of interior diameter and overall diameter of broaching is described now with regard to structure described above and embodiment, but this method also other embodiment outside available centring means top said finish.This method comprises the overall diameter of machine workpieces.For example the workpiece 10 among Fig. 2 and 3 has as the toothed overall diameter on the workpiece among Fig. 1 10.This overall diameter can be made with the several different methods machined, comprises that peripheral surface broach broaching, castellation are drawn together and cut, hobbing or turning.
This method also comprises circumferential radial load is applied on the interior diameter 22 of workpiece or on the overall diameter (as the overall diameter among Fig. 6 226), thereby make the center of this workpiece alignment broach tool, the instrument 220 among the instrument 20 among this broach tool such as Fig. 2 (when this workpiece is when feeling relieved with interior diameter) or Fig. 5 (when this instrument is when feeling relieved with overall diameter).After applying radial load, this method comprise use broach tool 20 (or 220, as Fig. 5 and 6 use among the embodiment of overall diameter centring means) broach with regard to the workpiece of broach tool centering.In this method, because workpiece is with regard to broach tool centering, therefore after overall diameter is by machined, and interior diameter can avoid adopting the turning operation to make interior diameter and overall diameter concentric as yet by before the broaching.
According to said method, centring means can be used to circumferential radial load is applied on the workpiece.In this case, method comprises and makes centring means and broach tool centering.Adjusting part 235 shown in that this point was said above for example available, Fig. 6 is finished.
If centring means is the passive embodiment of centring means as shown in Fig. 2-8, when this centring means and this workpiece alignment, the step that circumferential power is applied on the workpiece can be carried out automatically so.(workpiece 10 ' is around centring means 16 in as Fig. 3) this aligning all can take place when (centring means 216 is around workpiece 210 ' in as Fig. 6) or workpiece ring were around centring means when instrument (as 220) decline is caused this centring means around workpiece.Preferably this method clamps this centring means before being included in the step of broaching interior diameter in the axial direction.For example, in the embodiment show in figure 3, before the interior diameter with broach tool 20 broaching workpiece 10 ', chuck 56 is used the position with the workpiece 10 ' that keeps having been felt relieved.
Be described in detail though realize optimal mode of the present invention, those skilled in the art will recognize that and realize that in claims restricted portion the present invention can be used as various alternative designs and embodiment.
Claims (20)
1. decide the device of workpiece centre with respect to the tool focus line for one kind, comprising:
One rigidly fixes with respect to this instrument and to make the radially fixed component concentric with this instrument, and
Thereby one with this radially fixed component skew and equally distributed substantially radial load is applied to make the offsetting mechanism of itself and this instrument centering on the side face of this workpiece.
2. the device of claim 1 is characterized in that this offsetting mechanism contacts this workpiece on an axial plane.
3. the device of claim 1 is characterized in that also comprising: can operate for one to be fixed this chuck of the instrument of centering at this workpiece by this toolroom machine first being processed.
4. the device of claim 3, it is characterized in that this radially fixed component be rigidly fixed on this chuck; And wherein said side face is an outer peripheral face.
5. the device of claim 1 is characterized in that this gently upwards fixing member is rigidly fixed on this instrument so that therewith move axially.
6. the device of claim 5 is characterized in that this side face is an inner peripheral surface.
7. the device of claim 1 it is characterized in that this side face is in inner peripheral surface and the outer peripheral face, and wherein this instrument moves axially in this inner peripheral surface.
8. the device of claim 1 is characterized in that this offsetting mechanism comprises some contact elements that contacted this workpiece side face by skew.
9. the device of claim 8 is characterized in that this offsetting mechanism comprises that can be operated a spring that these contact elements is displaced to the side face of this workpiece.
10. the device of claim 8 is characterized in that this offsetting mechanism comprises that one is positioned and these contact elements is displaced to the wedge device of the side face of this workpiece.
11. the device of claim 10 is characterized in that this offsetting mechanism comprises that one is positioned and acts on this wedge device, thereby these contact elements is displaced to the spring of the side face of this workpiece.
12. the device of claim 10, it is characterized in that this offsetting mechanism be included in inside be formed up to few one with this wedge device become to flow structure of passage of connection; And
Wherein this wedge device is replied the interior fluid pressure of said at least one passage these contact elements is displaced to this side face.
13. method with workpiece of interior diameter and overall diameter of a broaching comprises:
This overall diameter of machined;
Circumferential radial load is applied on the interior diameter or overall diameter of this workpiece, thereby makes this workpiece and a broach tool centering; And
After application of force step, utilize the broach interior diameter of this workpiece of this broach tool.
14. the method for claim 13 is characterized in that being characterized as of this method, after machining steps and before the broaching step, not turning interior diameter makes the concentric step of itself and overall diameter.
15. the method for claim 13 is characterized in that this application of force step can be carried out automatically owing to centring means and the axially aligned result of this workpiece.
16. the method for claim 13 is characterized in that also comprising: make a centring means and this broach tool centering, wherein this radial load is applied by this centring means.
17. the method for claim 16 is characterized in that also comprising: before said application of force step, this centring means and this workpiece are axially aligned.
18. the method for claim 13 is characterized in that this machining steps is a kind of in peripheral surface broach broaching, castellation scraping, hobbing or the turning.
19. the method for claim 13 is characterized in that also comprising: at the workpiece that before the broaching step, clamps this centering after the application of force step.
20. the device with respect to tool focus line centering workpiece comprises:
One rigidly fixes the radially fixing member that makes it concentric with this instrument with respect to this instrument;
Thereby one with this radially fixed component skew and equally distributed substantially radial load is applied to make the offsetting mechanism of itself and this instrument centering on the side face of this workpiece, reach
Can operate at this workpiece by this toolroom machine first being processed chuck that the instrument of this centering is fixing for one;
Wherein this offsetting mechanism comprises some contact elements that contacted this workpiece side face by skew; Wherein this side face is in inner peripheral surface and the outer peripheral face one; And wherein this instrument moves in this inner peripheral surface vertically.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US69293605P | 2005-06-22 | 2005-06-22 | |
| US60/692936 | 2005-06-22 | ||
| US11/333153 | 2006-01-17 |
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| Publication Number | Publication Date |
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| CN1883877A true CN1883877A (en) | 2006-12-27 |
| CN100479984C CN100479984C (en) | 2009-04-22 |
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| CNB2006100940544A Expired - Fee Related CN100479984C (en) | 2005-06-22 | 2006-06-22 | Work piece centering device and method of broaching |
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| CN (1) | CN100479984C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102416568A (en) * | 2010-09-24 | 2012-04-18 | 格鲁博-工厂有限及两合公司 | Clamping device and clamping method |
| CN103170677A (en) * | 2013-04-24 | 2013-06-26 | 长沙插拉刨机电设备制造有限公司 | High-speed numerical control hard broaching machine |
| CN105817996A (en) * | 2016-05-12 | 2016-08-03 | 贵州师范大学 | Centering mechanism of button bit sharpening machine |
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2006
- 2006-06-22 CN CNB2006100940544A patent/CN100479984C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102416568A (en) * | 2010-09-24 | 2012-04-18 | 格鲁博-工厂有限及两合公司 | Clamping device and clamping method |
| CN103170677A (en) * | 2013-04-24 | 2013-06-26 | 长沙插拉刨机电设备制造有限公司 | High-speed numerical control hard broaching machine |
| CN105817996A (en) * | 2016-05-12 | 2016-08-03 | 贵州师范大学 | Centering mechanism of button bit sharpening machine |
| CN105817996B (en) * | 2016-05-12 | 2017-12-15 | 贵州师范大学 | The centering body of drill rod grinding machine |
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| CN100479984C (en) | 2009-04-22 |
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