CN103680548A - Manufacturing methods of disc driving device and spindle motor - Google Patents
Manufacturing methods of disc driving device and spindle motor Download PDFInfo
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- CN103680548A CN103680548A CN201310294126.XA CN201310294126A CN103680548A CN 103680548 A CN103680548 A CN 103680548A CN 201310294126 A CN201310294126 A CN 201310294126A CN 103680548 A CN103680548 A CN 103680548A
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- information flag
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Abstract
The invention provides manufacturing methods of a disc driving device and a spindle motor. The disc driving device comprises a rotor hub which is provided with a hub thread groove and a hub information mark indicating an initial position of the hub thread groove on the outer surface. The manufacturing method of disc driving device comprises a step of preparing the spindle motor with the rotor hub, a step of preparing a clamping device comprising a clamping device thread groove and a step of embedding a recording disc to the spindle motor. The manufacturing method comprises a step of detecting the position of the hub information mark and a step of locating the clamping device and the spindle motor in the circumferential direction according to the detected position of the hub information mark and screwing the clamping device to the spindle motor.
Description
Technical field
The present invention relates to a kind of manufacture method of disc drive appts and the manufacture method of Spindle Motor.
Background technology
In disc drive appts, be equipped with the Spindle Motor that makes disc rotation.About Spindle Motor and disc drive appts in the past, for example, in day disclosure 2001-35129 communique, record to some extent.The disc drive appts of this communique has been implemented on the pad of screw thread processing by disc being sticked on to inner radius, and pad is screwed on the wheel hub external diameter through screw thread processing, thereby disc is fixed on to (0014 section) on wheel hub.
As shown in day disclosure 2001-35129 communique, if wheel hub and pad are rotated relatively to wheel hub and the intermeshing position of pad, have the rotation in contact due to wheel hub and pad and produce the problem at broken end.And, exist the broken end producing to be to some extent attached on disc and pollute the problem of disc.
Summary of the invention
Exemplary the first invention of the application relates to a kind of disc drive appts with the Spindle Motor rotating around central axis.Spindle Motor comprises rotor hub.The outside surface of rotor hub comprises wheel hub thread groove and represents the wheel hub information flag of the starting position of described wheel hub thread groove.
The manufacture method of disc drive appts comprises operation, the operation of preparing clamp device of preparing Spindle Motor, indicator is embedded into the operation of Spindle Motor, detect wheel hub information flag position operation and according to the position of detected wheel hub information flag at circumferential positioning clamping device and Spindle Motor and clamp device is screwed into the operation of Spindle Motor.Clamp device comprises clamp device thread groove in the interior perimembranous of clamp device.
According to exemplary the first invention of the application, by the position of wheel hub information flag being detected to the starting position of learning wheel hub thread groove.Thus, can carry out efficiently clamp device with respect to the screw threads for fastening of rotor hub.And, can suppress to produce broken end owing to finding out the position of wheel hub and clamp device engagement before screw threads for fastening.
Exemplary the second invention of the application relates to a kind of disc drive appts with the Spindle Motor rotating around central axis.Spindle Motor comprises rotor hub.The outside surface of rotor hub comprises wheel hub thread groove and represents the wheel hub information flag of the starting position of described wheel hub thread groove.
The manufacture method of disc drive appts comprises the operation of preparing Spindle Motor, the operation of preparing clamp device, by indicator be embedded into Spindle Motor operation, with reference to the starting position of wheel hub thread groove and the operation of the position relationship between wheel hub information flag and according to the information of institute's reference circumferential to clamp device and Spindle Motor positions and clamp device is screwed into the operation of described Spindle Motor.Clamp device comprises clamp device thread groove in the interior perimembranous of clamp device.
According to exemplary the second invention of the application, by the position of wheel hub information flag being detected to the starting position of learning wheel hub thread groove.Thus, can carry out efficiently clamp device with respect to the screw threads for fastening of rotor hub.And, can suppress to produce broken end owing to finding out the position of wheel hub and clamp device engagement before screw threads for fastening.Especially in the situation that the position relationship between the starting position of wheel hub thread groove and wheel hub information flag change, also can be at any time with reference to the starting position of wheel hub thread groove and the position relationship between wheel hub information flag.
The application's exemplary the 3rd invention is the manufacture method that comprises the Spindle Motor of the rotor hub carrying for indicator.This manufacture method comprises cutting at one time operation, at the outside surface of intermediate member, forms the operation of wheel hub information flag, thread groove formation operation and the assembling rotating part carrying out and the operation of stationary part that is forming the secondary cutting operation of carrying out after the operation of wheel hub information flag, carrying out after the operation that forming wheel hub information flag after secondary cutting operation.In cutting at one time operation, make the primitive part that becomes processing object centered by central axis, rotate and form intermediate member.In secondary cutting operation, cutting intermediate member and form rotor hub.At thread groove, form in operation, in the outside surface of rotor hub with wheel hub information flag in the outside surface of radially overlapping position or rotor hub with respect to wheel hub information flag along circumferentially departing from the position of predetermined angular, by cutting, form wheel hub thread groove.In assembling procedure, concrete assembling comprises the rotating part of rotor hub and the stationary part static with respect to rotating part.
According to the application's exemplary the 3rd invention, can manufacture the Spindle Motor that according to wheel hub information flag obtains the starting position of cicada wheel hub thread groove.
The application's exemplary the 4th invention is the manufacture method that comprises the Spindle Motor of the rotor hub carrying for indicator.This manufacture method comprises the operation of the formation wheel hub information flag that forms the assembling procedure of the operation of rotor hub, the thread groove formation operation of carrying out, the assembling rotating part carrying out and stationary part and carry out after assembling procedure after forming the operation of rotor hub after thread groove forms operation.In forming the operation of rotor hub, the primitive part that makes to become processing object rotates and forms rotor hub centered by central axis.In thread groove forms operation, at the outside surface of rotor hub, by cutting, form wheel hub thread groove.In assembling procedure, concrete assembling comprises the rotating part of rotor hub and the stationary part static with respect to rotating part.In forming the operation of wheel hub information flag, the starting position of the wheel hub thread groove in the outside surface of rotor hub or form wheel hub information flag along the position of circumferentially departing from predetermined angular with respect to starting position.
According to the application's exemplary the 4th invention, can manufacture the Spindle Motor that according to wheel hub information flag obtains the starting position of cicada wheel hub thread groove.
For aforementioned and other key elements, feature, means, effect and characteristic of the present invention, by reference to accompanying drawing and following detailed description preferred embodiment, make it clearer and more definite.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the related disc drive appts of the first embodiment.
Fig. 2 is the partial, longitudinal cross-sectional of the related disc drive appts of the first embodiment.
Fig. 3 is the stereographic map of the related rotor hub of the first embodiment.
Fig. 4 is the vertical view of the related rotor hub of the first embodiment.
Fig. 5 is the process flow diagram of the flow process of the assembling procedure of the related rotor hub of expression the first embodiment and clamp device.
Fig. 6 is the process flow diagram of flow process of the concrete operation of the step S103 in presentation graphs 5.
Fig. 7 is the stereographic map of the situation of the assembling procedure of the related Spindle Motor of expression the first embodiment and clamp device.
Fig. 8 forms the process flow diagram of the flow process of operation for representing the information flag of the rotor hub that a variation is related.
Fig. 9 is the vertical view of the related rotor hub of a variation.
Figure 10 is the vertical view of the related rotor hub of a variation.
Figure 11 is the vertical view of the related rotor hub of a variation.
Figure 12 forms the process flow diagram of the flow process of operation for representing the information flag of the rotor hub that a variation is related.
Embodiment
Below, with reference to accompanying drawing, exemplary embodiment of the present invention is described.In addition, in this application, respectively the parallel direction of the central axis with Spindle Motor is called to " axially ", the direction of the central axis quadrature with Spindle Motor is called to " radially ", the direction of the circular arc along centered by the central axis of Spindle Motor is called to " circumferentially ".And in this application, take is axially above-below direction, and take indicator side as upper with respect to the basal part of Spindle Motor, and the shape of each several part and position relationship are described.But the definition of this above-below direction does not limit Spindle Motor involved in the present invention and disc drive appts direction in use.
And " parallel direction " in the application also comprises the direction of almost parallel.And " direction of quadrature " in the application also comprises the roughly direction of quadrature.
Fig. 1 is the longitudinal section of the related disc drive appts 1 of the first embodiment of the present invention.Fig. 2 is the partial, longitudinal cross-sectional of disc drive appts 1.Disc drive appts 1 is for making indicator 14(be designated hereinafter simply as " disc 14 ") rotation disc 14 is carried out to the device that reads and write of information.As shown in Figure 1, disc drive appts 1 comprises Spindle Motor 11, apparatus housing 12, outer cover 13, disc 14, clamp device 15 and access portion 16.
Spindle Motor 11, in supports disc 14, rotates disc 14 centered by central axis 9.As shown in Figure 2, Spindle Motor 11 comprises stationary part 2 and rotating part 3, and described stationary part 2 comprises basal part 21.Basal part 21 is a part for apparatus housing 12, by the parts that are connected with other positions of apparatus housing 12, is formed.
The opening on the top of outer cover 13 cladding system casings 12.
In the inside of the housing being formed by outer cover 13 and the apparatus housing 12 that comprises basal part 21, accommodate rotating part 3, disc 14 and the access portion 16 of Spindle Motor 11.
Access portion 16 makes head 161 move along the record surface of disc 14, thereby disc 14 is carried out to reading and writing of information.In addition, access portion 16 also can carry out any one in reading and writing of information to 14 of discs.
And disc drive appts 1 also can comprise two above discs 14.
Next the structure of above-mentioned Spindle Motor 11 is described.
As shown in Figure 2, Spindle Motor 11 comprises: the stationary part 2 relatively static with respect to the apparatus housing 12 of disc drive appts 1; With the rotating part 3 rotating centered by central axis 9 in supports disc 14.
Basal part 21 is radially expansion below stator 25.As previously mentioned, basal part 21 is that the apparatus housing 12(of disc drive appts 1 is with reference to figure 1) a part, and formed by the parts that are connected with other positions of apparatus housing 12.But, basal part 21 and the apparatus housing 12 split parts of also can respectively doing for oneself.Basal part 21 comprises: the base plate 211 of radially expanding; Maintaining part 212 with inner edge from the base plate 211 general cylindrical shape shape outstanding towards top.Basal part 21 is such as being formed by metals such as aluminium alloys.
Rotating part 3 comprises rotor hub 31 and rotor magnet 32.
As shown in Figure 2, at least a portion of the outer peripheral face of wheel hub cylindrical portion 313 becomes the surface of contact contacting with the interior perimembranous of disc 14.And the upper surface of disc mounting portion 314 becomes the mounting surface of mounting disc 14.Disc 14 is positioned in the upper surface of disc mounting portion 314.Upside at disc 14 disposes clamp device 15.Thus, can suppress axially departing from of disc 14.The interior perimembranous of disc 14 contacts with the outer peripheral face of wheel hub cylindrical portion 313.Thus, determined the radial position of disc 14.Thus, wheel hub cylindrical portion 313 and disc mounting portion 314 and clamp device 15 become the support of supports disc 14.
In addition, also can replace circular rotor magnet 32 with a plurality of magnet.When using a plurality of magnet, in the mode of the N utmost point and S utmost point alternative arrangement along a plurality of magnet of circumferential array.
Rotating part 3 is supported as rotating by stationary part 2 via Bearning mechanism 110.In the present embodiment, the fluid bearing mechanism that Bearning mechanism 110 forms for sleeve part 311 and the lubricating fluid between these parts by axle 22, lower annulus 23 and upper annulus 24 and rotor hub 31.But, also can replace with the bearing of other modes such as ball bearing or sliding bearing fluid bearing mechanism.
In this Spindle Motor 11, if provide drive current to coil 252, at a plurality of teeth 42, produce magnetic flux.And, by the flux interaction between tooth 42 and rotor magnet 32, between stationary part 2 and rotating part 3, produce circumferential torque.Consequently, rotating part 3 rotates centered by central axis 9 with respect to stationary part 2.Be supported in disc 14 and together rotation centered by central axis 9 of rotating part 3 on rotor hub 31.
Next the assembling procedure of rotor hub 31 and clamp device 15 is described.Fig. 3 is the stereographic map of rotor hub 31.Fig. 4 is the vertical view of rotor hub 31.
First, the more detailed structure of rotor hub 31 is described.
As shown in Figure 3, the outer peripheral face in wheel hub cylindrical portion 313 is provided with wheel hub threaded portion 51.In wheel hub threaded portion 51, be provided with spiral helicine wheel hub thread groove 511.In the upper end of wheel hub threaded portion 51, be provided with thread groove starting position 512.Thread groove starting position 512 is the starting position of the upper end side of wheel hub thread groove 511.In the present embodiment, wheel hub threaded portion 51 is two screw threads, so wheel hub threaded portion 51 comprises two thread groove starting positions 512.In addition, wheel hub threaded portion 51 also can be a screw thread or three many above screw threads.When wheel hub threaded portion 51 is a screw thread, wheel hub threaded portion 51 comprises single thread groove starting position 512.And when wheel hub threaded portion 51 is many more than three screw threads, wheel hub threaded portion 51 comprises the thread groove starting position 512 with the number equal number of wheel hub threaded portion 51.
And as shown in Figures 3 and 4, wheel hub plectane portion 312 comprises instrument receiver hole 52 and wheel hub information flag 53.
Wheel hub information flag 53 represents that the starting position of wheel hub thread groove 511 is the positional information of thread groove starting position 512.Wheel hub information flag 53 is arranged on the upper surface of wheel hub plectane portion 312.Particularly, wheel hub information flag 53 is positioned at the position by radial outside than the radial outer end portion of instrument receiver hole 52.Wheel hub information flag 53 is configured in one of them the radially overlapping position with thread groove starting position 512.That is, wheel hub information flag 53 is radially overlapping with respect to central axis 9 at the outside surface of rotor hub 31 with thread groove starting position 512.
Next, to assembling clamp device 15 in the manufacture process at disc drive appts 1 and comprising that the order of the Spindle Motor 11 of rotor hub 31 describes.Fig. 5 is the process flow diagram of the flow process of the assembling procedure of expression Spindle Motor 11 and clamp device 15.Fig. 6 is the process flow diagram of flow process of the concrete operation of the step S103 in presentation graphs 5.Fig. 7 is the stereographic map of the situation of the assembling procedure of expression Spindle Motor 11 and clamp device 15.In Fig. 7, part and disc 14 ground beyond the rotor hub 31 of omission Spindle Motor 11 illustrate.
In the example of Fig. 5, first, thread groove starting position 512 is pre-stored in recording medium (step S100) with the position relationship of wheel hub information flag 53.Particularly, storage thread groove starting position 512 has circumferentially been departed from how many degree with respect to wheel hub information flag 53 edges.In the present embodiment, thread groove starting position 512 and wheel hub information flag 53 are radially overlapping.Therefore, storage thread groove starting position 512 is spent along circumferentially having departed from 0 with respect to wheel hub information flag 53.
Next, prepare Spindle Motor 11 and clamp device 15, described Spindle Motor 11 comprises the rotor hub 31 with wheel hub information flag 53, and described clamp device 15 comprises clamp device thread groove (step S101) in interior perimembranous.
Then, the rotor hub 31(step S102 that disc 14 is embedded into Spindle Motor 11).Thus, disc 14 loads the disc mounting portion 314 in rotor hub 31.
Afterwards, with reference to the position relationship (step S103) of 53 of thread groove starting position 512 and wheel hub information flags.Particularly, as shown in Figure 6, first utilize image to process to detect the position of wheel hub information flag 53 (step S1031).Then, with reference to the position relationship (step S1032) of 53 of pre-stored thread groove starting position 512 in step S100 and wheel hub information flags.By reference position relation, by the known thread groove starting position, position 512 of wheel hub information flag 53.Particularly, in the present embodiment, the known position circumferentially depart from 0 degree with respect to wheel hub information flag 53 edges is having thread groove starting position 512 with wheel hub information flag 53 in radially overlapping position.
As shown in Figure 7, in step S1031, adopt image processing apparatus 6.Image processing apparatus 6 obtains the image of the predetermined image processing region 61 in the outside surface of rotor hub 31, and the image obtaining is resolved.By the setting tool (not shown) being inserted in instrument receiver hole 52, control rotating in a circumferential direction of rotor hub 31.If the precalculated position that rotor hub 31 rotations and wheel hub information flag 53 arrive in image processing region 61, image processing apparatus 6 sends stop signal, is stopped the rotation of rotor hub 31 by setting tool.Thus, detect the position of wheel hub information flag 53.
As previously mentioned, in the present embodiment, wheel hub information flag 53 is positioned at the position by radial outside than instrument receiver hole 52.Thus, even insert setting tool in instrument receiver hole 52, image processing apparatus 6 also easily detects wheel hub information flag 53.
In addition, in the present embodiment, the static and rotor hub of image processing apparatus 6 31 rotations in step S1031, but the invention is not restricted to this.Also can make the static and image processing apparatus of rotor hub 31 6 along circumferentially mobile.
Finally, according to the information of the position of detected wheel hub information flag 53 in step S1031 and reference in step S1032, clamp device 15 and rotor hub 31 are circumferentially located.Particularly, with thread groove starting position 512 and the starting position of the lower end side of clamp device thread groove, in the mode of axial overlap, clamp device 15 and rotor hub 31 are circumferentially located.Then, clamp device 15 is screwed on the rotor hub 31 of Spindle Motor 11 (step S104).
As previously discussed, in the present embodiment, by detecting the known thread groove starting position, position 512 of wheel hub information flag 53.Thus, can carry out efficiently clamp device 15 with respect to the screw threads for fastening of rotor hub 31.And, without the position that made wheel hub thread groove contact with clamp device thread groove to find out wheel hub thread groove and the engagement of clamp device thread groove before screw threads for fastening.Therefore, can suppress the generation at broken end.
In addition, when the position relationship of 53 of thread groove starting position 512 and wheel hub information flags, also can omit the step S1032 of step S100 and step S103.
Next, the manufacturing process of Spindle Motor is described.Fig. 8 forms the process flow diagram of the flow process of operation for representing the information flag of the rotor hub that a variation is related.
In the example of Fig. 8, first, the primitive part that makes to become the rotor hub 31 of processing object rotates and forms intermediate member (step S201) centered by central axis 9.At this, with the precision lower than aftermentioned step S203, primitive part is carried out to cutting at one time.
Next, the outside surface at this intermediate member forms wheel hub information flag 53(step S202).In the present embodiment, as mentioned above, wheel hub information flag 53 is formed on the upper surface of the wheel hub plectane portion 312 of rotor hub 31.
In the present embodiment, wheel hub information flag 53 forms by the outside surface irradiating laser to this intermediate member.
Then, cut this intermediate member and form rotor hub 31(step S203).At this, with the precision higher than above-mentioned steps S201, intermediate member is carried out to secondary cutting.Mainly to requiring, with respect to the part of the precision of central axis 9, carry out secondary cutting.More specifically, in secondary cutting, the upper surface portion that becomes wheel hub plectane portion 312 to intermediate member is cut.That is, by secondary cutting, the upper surface portion that is formed with wheel hub information flag 53 of intermediate member is cut.Yet the cutting output of the upper surface portion of intermediate member is less than the thickness of the wheel hub information flag 53 forming by irradiating laser.Therefore, the upper surface of the wheel hub plectane portion 312 of the rotor hub after secondary cutting 31 remains wheel hub information flag 53.In addition, the also whole outside surface of machinable intermediate member in secondary cutting.And, in secondary cutting, also can not cut and in intermediate member, be formed with the upper surface portion of wheel hub information flag 53 but cut other parts.
Afterwards, the wheel hub cylindrical portion 313 at rotor hub 31 forms wheel hub thread groove 511(step S204).In the present embodiment, wheel hub thread groove 511 forms by cutting.And in the outside surface of rotor hub 31, the thread groove starting position 512 of wheel hub thread groove 511 is formed on wheel hub information flag 53 in radially overlapping position.
Then, assembling comprises the rotating part 3 of rotor hub 31 and the stationary part 2(step S205 static with respect to rotating part 3).Consequently, obtained Spindle Motor 11.
Fig. 9 is the vertical view of the related rotor hub 31A of a variation.In the example of Fig. 9, rotor hub 31A comprises two wheel hub information flag 53A.The wheel hub threaded portion of this rotor hub 31A is two screw threads.That is, rotor hub 31A comprises two thread groove starting positions.
Figure 10 is the vertical view of the related rotor hub 31B of other variation.In the example of Figure 10, rotor hub 31B comprises three wheel hub information flag 53B.The wheel hub threaded portion of this rotor hub 31B is three start screw.That is, rotor hub 31B comprises three thread groove starting positions.
In the example of Fig. 9 and Figure 10, wheel hub information flag is a plurality of.And the wheel hub threaded portion of rotor hub is many screw threads, the quantity of wheel hub information flag that is formed on rotor hub is identical with the number of wheel hub threaded portion.That is, the quantity of wheel hub information flag is identical with the quantity of thread groove starting position.Thus, can further increase the quantity of wheel hub information flag.Consequently, when detecting wheel hub information flag, can suppress the amount of movement of rotor hub or image processing apparatus.
Figure 11 is the vertical view of the related rotor hub 31C of other variation.In the example of Figure 11, rotor hub 31C comprises three thread groove starting position 512C and a wheel hub information flag 53C.And wheel hub information flag 53C and any one thread groove starting position 512C be not radially overlapping.In the example of Figure 11, wheel hub information flag 53C is present in respect to thread groove starting position 512C along circumferentially departing from the position of predetermined angular in the outside surface of rotor hub 31C.Particularly, thread groove starting position 512C is present in from wheel hub information flag 53C along the positions of circumferentially departing from 60 degree, 180 degree and 300 degree when overlooking observation.
At thread groove starting position 512C and wheel hub information flag 53C, so along circumferentially depart from predetermined angular in the situation that, in above-mentioned steps S100, store thread groove starting position 512C and circumferentially departed from predetermined angular with wheel hub information flag 53C edge.In the example of Figure 11, for example, store thread groove starting position 512C and departed from 60 degree from wheel hub information flag.And, in the step S1032 of above-mentioned steps S103, with reference to circumferentially departing from of thread groove starting position 512C pre-stored in step S100 and wheel hub information flag 53C.
And in the above-described embodiment, wheel hub information flag is formed near the radial outside end of upper surface of wheel hub plectane portion, but the invention is not restricted to this.Wheel hub information flag also can be positioned at the position by radially inner side than above-mentioned embodiment.And wheel hub information flag also can a part of be positioned at the radial outside end of the upper surface of wheel hub plectane portion.Thus, wheel hub information flag is positioned at the position of leaning on radial outside most.By making wheel hub information flag be positioned at the position of more leaning on radial outside, can infer more exactly the starting position that wheel hub thread groove.
And in the above-described embodiment, wheel hub information flag is formed on the upper surface of the wheel hub plectane portion of rotor hub, but the invention is not restricted to this.So long as the outside surface of rotor hub, wheel hub information flag also can be formed on other positions such as outside surface such as wheel hub thread groove.
And in the above-described embodiment, wheel hub information flag forms by the outside surface irradiating laser to rotor hub, but is not limited to this.For example, wheel hub information flag also can form by the outside surface that makes mark be attached to rotor hub.Now, profit writes with a pen to form wheel hub information flag, but also can adhere to mark by seal, ink-jet and additive method.And, when the outside surface at rotor hub adheres to mark, preferably in secondary cutting and the upper surface portion that becomes wheel hub plectane portion that misaligns a parts cut.Therefore, in secondary cutting, do not cut the upper surface portion that is formed with wheel hub information flag.
And, in the above-described embodiment, after the cutting at one time operation of rotor hub and the formation operation of carrying out wheel hub information flag before secondary cutting operation, but the invention is not restricted to this.The formation operation of wheel hub information flag also can be carried out after the cutting at one time operation of rotor hub and secondary cutting operation.
And, in the above-described embodiment, in the manufacturing process of Spindle Motor, after the formation operation of wheel hub information flag, carry out the formation operation of wheel hub thread groove and the assembling procedure of stationary part and rotating part, but the invention is not restricted to this.
Figure 12 forms the process flow diagram of the flow process of operation for representing the information flag of the rotor hub that a variation is related.
In the example of Figure 12, first, when the primitive part that makes to become processing object rotates centered by central axis, cut, thereby form rotor hub (step S211).Next, by cutting the outside surface at rotor hub to form wheel hub thread groove (step S212).That is, step S212 is that thread groove forms operation.Afterwards, assembling comprises the rotating part of rotor hub and the stationary part static with respect to rotating part (step S213).Then, the wheel hub thread groove starting position in the outside surface of rotor hub or form wheel hub information flag (step S214) along the position of circumferentially departing from predetermined angular with respect to this starting position.
As shown in the example of Figure 12, both can after the formation operation of wheel hub thread groove, carry out the formation operation of wheel hub information flag, the formation operation that can carry out again wheel hub information flag after the assembling procedure of stationary part and rotating part.
And the Spindle Motor of above-mentioned embodiment is the so-called fixed shaft type motor that axle belongs to stationary part.But Spindle Motor of the present invention also can be the rotary-type motor of so-called axle that axle belongs to rotating part.
And the Spindle Motor of above-mentioned embodiment is that magnet is at the so-called outer-rotor type motor of the radial outside rotation of stator.But Spindle Motor of the present invention also can be magnet at the so-called inner-rotor type motor of the radially inner side rotation of stator.
And, also can be different from the shape shown in each figure of the application about the shape of the detailed part of each parts.And, also each key element occurring in above-mentioned embodiment or variation can be carried out to suitable combination in the scope not conflicting.
The present invention can be used in the manufacture method of disc drive appts and the manufacture method of Spindle Motor.
The feature of aforesaid preferred implementation and variation thereof only otherwise conflict and just can suitably combine.
For the preferred embodiment of the present invention, above, narrate, but do not depart from the scope of the present invention and the prerequisite of aim under can be out of shape and change, this point is to be understood that as those skilled in the art.Therefore, scope of the present invention is only determined according to claims.
Claims (28)
1. a manufacture method for disc drive appts, the manufacture method of this disc drive appts comprises following operation:
Prepare the operation of Spindle Motor, described Spindle Motor rotates and comprises rotor hub around central axis, and described rotor hub comprises wheel hub thread groove and represents the wheel hub information flag of the starting position of described wheel hub thread groove at outside surface;
The operation of preparing clamp device, described clamp device comprises clamp device thread groove in interior perimembranous;
The operation that indicator is embedded into described Spindle Motor;
The operation that the position of described wheel hub information flag is detected; And
According to the position of detected described wheel hub information flag, circumferentially described clamp device and described Spindle Motor are being positioned, and described clamp device is being screwed into the operation of described Spindle Motor.
2. the manufacture method of disc drive appts according to claim 1,
The starting position of described wheel hub information flag and described wheel hub thread groove at the outside surface of described rotor hub with respect to described central axis radially overlapping.
3. the manufacture method of disc drive appts according to claim 1,
Described wheel hub information flag is present in respect to the edge, starting position of described wheel hub thread groove and circumferentially departs from the position of predetermined angular in the outside surface of described rotor hub.
4. according to the manufacture method of the disc drive appts described in any one in claims 1 to 3,
Described wheel hub information flag forms by cutting the outside surface of described rotor hub.
5. the manufacture method of disc drive appts according to claim 4,
Described wheel hub information flag forms by comprising the method for the either party in laser and cutting.
6. according to the manufacture method of the disc drive appts described in any one in claims 1 to 3,
Described wheel hub information flag is adhered to mark by the outside surface at described rotor hub and is formed.
7. the manufacture method of disc drive appts according to claim 6,
Described wheel hub information flag forms by comprising seal, ink-jet and the pen either party's in writing method.
8. according to the manufacture method of the disc drive appts described in any one in claims 1 to 3,
Described rotor hub comprises:
Wheel hub plectane portion, it is radially expanded with respect to described central axis;
Wheel hub cylindrical portion, its peripheral part from described wheel hub plectane portion extends towards axial downside; And
Disc mounting portion, it is expanded towards radial outside from described wheel hub cylindrical portion,
Described wheel hub information flag is formed on the upper surface of described wheel hub plectane portion.
9. the manufacture method of disc drive appts according to claim 8,
At least a portion of described wheel hub information flag is positioned at the radial outside end of the upper surface of described wheel hub plectane portion.
10. the manufacture method of disc drive appts according to claim 8,
Described wheel hub plectane portion possesses the instrument receiver hole of the depression from upper surface towards below,
Described wheel hub information flag is positioned at the position by radial outside than described instrument receiver hole.
11. according to the manufacture method of the disc drive appts described in any one in claims 1 to 3,
Utilize image to process to carry out the operation that the position of described wheel hub information flag is detected.
12. according to the manufacture method of the disc drive appts described in any one in claims 1 to 3,
The described wheel hub information flag that is formed at described rotor hub is one or more.
13. according to the manufacture method of the disc drive appts described in any one in claims 1 to 3,
The included wheel hub threaded portion of described rotor hub is many screw threads,
The quantity of described wheel hub information flag that is formed at described rotor hub is identical with the number of described wheel hub threaded portion.
The manufacture method of 14. 1 kinds of disc drive appts, the manufacture method of this disc drive appts comprises following operation:
Prepare the operation of Spindle Motor, described Spindle Motor rotates and comprises rotor hub around central axis, and described rotor hub comprises wheel hub thread groove and represents the wheel hub information flag of the starting position of described wheel hub thread groove at outside surface;
The operation of preparing clamp device, described clamp device comprises clamp device thread groove in interior perimembranous;
The operation that record disc is embedded into described Spindle Motor;
With reference to the starting position of described wheel hub thread groove and the operation of the position relationship between described wheel hub information flag; And
According to the information of institute's reference, circumferentially locating described clamp device and described Spindle Motor, and described clamp device is being screwed into the operation of described Spindle Motor.
The manufacture method of 15. disc drive appts according to claim 14,
The starting position of described wheel hub information flag and described wheel hub thread groove at the outside surface of described rotor hub with respect to described central axis radially overlapping.
The manufacture method of 16. disc drive appts according to claim 14,
Described wheel hub information flag is present in respect to the edge, starting position of described wheel hub thread groove and circumferentially departs from the position of predetermined angular in the outside surface of described rotor hub.
17. manufacture methods according to claim 14 to the disc drive appts described in any one in 16,
Described wheel hub information flag forms by cutting the outside surface of described rotor hub.
The manufacture method of 18. disc drive appts according to claim 17,
Described wheel hub information flag forms by comprising the method for the either party in laser and cutting.
19. manufacture methods according to claim 14 to the disc drive appts described in any one in 16,
Described wheel hub information flag is adhered to mark by the outside surface at described rotor hub and is formed.
The manufacture method of 20. disc drive appts according to claim 19,
Described wheel hub information flag forms by comprising seal, ink-jet and the pen either party's in writing method.
21. manufacture methods according to claim 14 to the disc drive appts described in any one in 16,
Described rotor hub comprises:
Wheel hub plectane portion, it is radially expanded with respect to described central axis;
Wheel hub cylindrical portion, its peripheral part from described wheel hub plectane portion extends towards axial downside; And
Disc mounting portion, it is expanded towards radial outside from described wheel hub cylindrical portion,
Described wheel hub information flag is formed on the upper surface of described wheel hub plectane portion.
The manufacture method of 22. disc drive appts according to claim 21,
At least a portion of described wheel hub information flag is positioned at the radial outside end of the upper surface of described wheel hub plectane portion.
The manufacture method of 23. disc drive appts according to claim 21,
Described wheel hub plectane portion possesses the instrument receiver hole of the depression from upper surface towards below,
Described wheel hub information flag is positioned at the position by radial outside than described instrument receiver hole.
24. manufacture methods according to claim 14 to the disc drive appts described in any one in 16,
Before with reference to the starting position of described wheel hub thread groove and the operation of the position relationship between described wheel hub information flag,
Also comprise the position relationship between the starting position of described wheel hub thread groove and described wheel hub information flag be pre-stored within to the operation in storage medium,
With reference to the starting position of described wheel hub thread groove and the operation of the position relationship between described wheel hub information flag, comprise:
Utilize image to process the operation that the position of described wheel hub information flag is detected; And
Operation with reference to pre-stored described position relationship.
25. manufacture methods according to claim 14 to the disc drive appts described in any one in 16,
The described wheel hub information flag that is formed at described rotor hub is one or more.
26. manufacture methods according to claim 14 to the disc drive appts described in any one in 16,
The included wheel hub threaded portion of described rotor hub is many screw threads,
The quantity of described wheel hub information flag that is formed at described rotor hub is identical with the number of described wheel hub threaded portion.
The manufacture method of 27. 1 kinds of Spindle Motors, described Spindle Motor comprises the rotor hub carrying for indicator, the manufacture method of this Spindle Motor comprises following operation:
Cutting at one time operation, in described cutting at one time operation, makes the primitive part that becomes processing object centered by central axis, rotate and form intermediate member;
At the outside surface of described intermediate member, form the operation of wheel hub information flag;
Secondary cutting operation, in described secondary cutting operation, after the operation of described formation wheel hub information flag, cuts and forms described rotor hub described intermediate member;
Thread groove forms operation, at described thread groove, form in operation, after the operation of described formation wheel hub information flag, in described outside surface with described wheel hub information flag in radially overlapping position or with respect to described wheel hub information flag along circumferentially departing from the position of predetermined angular, by cutting, form wheel hub thread groove; And
The assembling procedure of assembling rotating part and the stationary part static with respect to described rotating part after described secondary cutting operation, wherein said rotating part comprises described rotor hub.
The manufacture method of 28. 1 kinds of Spindle Motors, described Spindle Motor comprises the rotor hub carrying for indicator, the manufacture method of this Spindle Motor comprises following operation:
The primitive part that makes to become processing object rotates and forms the operation of described rotor hub centered by central axis;
Thread groove forms operation, forms in operation, at described thread groove after the operation of described formation rotor hub, by cutting the outside surface at described rotor hub to form wheel hub thread groove;
The assembling procedure of assembling rotating part and the stationary part static with respect to described rotating part after described thread groove forms operation, wherein said rotating part comprises described rotor hub; And
After described assembling procedure, the starting position of the described wheel hub thread groove in the outside surface of described rotor hub or form the operation of wheel hub information flag with respect to described starting position along the position of circumferentially departing from predetermined angular.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261703840P | 2012-09-21 | 2012-09-21 | |
| US61/703,840 | 2012-09-21 | ||
| US13/804,792 US9083224B2 (en) | 2012-09-21 | 2013-03-14 | Method of manufacturing disk drive apparatus |
| US13/804,792 | 2013-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103680548A true CN103680548A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310294126.XA Pending CN103680548A (en) | 2012-09-21 | 2013-07-12 | Manufacturing methods of disc driving device and spindle motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103680548A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367923A (en) * | 1999-04-21 | 2002-09-04 | 西加特技术有限责任公司 | Single disc clamp nut for disc clamping in disc drive |
| US20050162776A1 (en) * | 2004-01-28 | 2005-07-28 | Samsung Electronics Co. Ltd. | Disk clamping apparatus and method for hard disk drive and hard disk drive with the same |
| JP2008016070A (en) * | 2006-06-30 | 2008-01-24 | Toshiba Corp | Disk drive and its assembling method |
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2013
- 2013-07-12 CN CN201310294126.XA patent/CN103680548A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367923A (en) * | 1999-04-21 | 2002-09-04 | 西加特技术有限责任公司 | Single disc clamp nut for disc clamping in disc drive |
| US20050162776A1 (en) * | 2004-01-28 | 2005-07-28 | Samsung Electronics Co. Ltd. | Disk clamping apparatus and method for hard disk drive and hard disk drive with the same |
| JP2008016070A (en) * | 2006-06-30 | 2008-01-24 | Toshiba Corp | Disk drive and its assembling method |
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Application publication date: 20140326 |