TWI379721B - - Google Patents

Description

1379721 IX. Description of the Invention: [Technical Field] The present invention relates to a processing machine, and more particularly to a spindle device capable of gripping a tool and performing machining to improve dynamic balance. [Prior Art] As shown in Fig. 1, a prior art processing machine spindle device includes a spindle unit 1, a set of housing units 2 disposed outside the spindle unit, and a mounting on the spindle Ai and The motor 3 between the housings & 2 and for driving the spindle unit i to rotate, the spindle unit! The front and rear sections are a front and rear bearing unit 4, 5 rotatably supported by the housing unit 2. The mandrel unit i has a sleeve 1G1, a threaded rod 1 1 in the bushing (8), and a collet 1〇3, which is locked with the rod 1〇2 along the axis L, a first elastic member HM disposed between the sleeve ππ and the pull rod 102 and providing the collet ι3 value to be engaged inside the sleeve 1〇1 and a set of the set body 7C 2 and A second elastic member ι 〇 5 between the sleeves 101 has a locating disc member 106 that is adjacent to the front portion. The housing unit 2 has a main body 201 and a rear axle seat 2G2 disposed at a rear end of the main body 201 and providing a set position of the rear bearing assembly. The main body 2Gi has a front surface opposite to the positioning disc member (10). Positioning the shoulder surface 2〇3, the second elastic member 1〇5 is sleeved between the rear axle seat and the rear bearing unit 5, and the second elastic member ι〇5 is provided for the positioning disk member (10) Positioning the shoulder surface 2〇3 to maintain a rotation room ^ feeding the spindle device can achieve the desired purpose, but # ... early ^ 1 money motor 3 drive produces a high rotation, the „ single 5 兀 1 dynamic balance is very f If the dynamic balance is not good, it will not only affect the precision of the machining', but also affect the service life of the front and rear bearing units 4, 5. The spindle device has the following defects in practical applications. The 1G2 rod of the cymbal and the 1G3 of the tube are directly locked by the screw and the screw hole, which is easy to be pulled due to the error of the screw clearance, processing and assembly;} Dry 1G2 and the tube "1G3 $ concentric, when the spindle device is high speed During operation, the spindle unit 丨 is liable to sway and affect the dynamic balance. - The spindle unit 丨 is on the shaft The front section of the 1G1 is provided with a locating disc member 1. The main body 201 of the housing unit 2 must also be provided with a partitioning wall 2〇3' for forming the positioning shoulder surface 203, so that the quality of the spindle device is increased in the front section. In this way, not only will the structural precision of the front section be affected, but the heavier the mass of the front section will be more sensitive to the influence of the dynamic balance, and the loss of the front bearing unit 4 will also be higher. [Invention] Therefore, one of the present inventions The purpose is to provide a spindle device which can ensure the concentric locking of the components and avoid the mass deviation from the front segment and affect the dynamic balance. The other purpose of this month is to provide a means for ensuring concentric locking of the components and avoiding The main vehicle of the present invention, which is capable of improving the dynamic balance, is characterized in that the weight is too heavy and affects the dynamic balance. Thus, the spindle device of the present invention capable of improving the dynamic balance comprises a mandrel unit and a set of shells disposed outside the mandrel unit. a body unit, a motor mounted between the spindle unit and the housing unit, and a front and rear bearing unit respectively disposed on two sides of the motor. The spindle unit is along a shaft 13971221 The extension 'the sub-sleeve has a bushing, a pull rod disposed in the bushing along the axis, a collet that is coupled to the pull rod along the axis, and a set between the bushing and the pull rod Providing a first elastic member with the collet value entangled inside the sleeve, the sleeve having a front support section, a rear support section, a driven section between the front and rear support sections, and a through section An inner hole in the front and rear branch sections and a positioning disc corresponding to the rear branch section and protruding from the outer peripheral surface, the inner hole has a taper hole section corresponding to the front branch section and one is disposed in the taper hole The inner side hole of the inner side of the section has a pair of sleeve portions which should be the front support section, - an external thread portion provided on one side of the sleeve portion, and a straight rod portion opposite to the external thread portion The cartridge holder has a fitting portion that can be sleeved in the tapered bore portion to guide the concentric portion of the sleeve portion and a fitting portion disposed on the fitting portion side and screwed to the external thread portion Internal threaded part. The housing unit is in the shape of a cylinder and is sleeved outside the sleeve unit and has a first end corresponding to the front support section and a second end of the pair of rear support sections. The first: a central portion between the one end portions and corresponding to the driven portion, a positioning shoulder surface that is closer to the two end portions and axially positioned by the positioning disk member. The motor is mounted between the spindle unit and the housing unit and can drive the spindle to rotate 'and has a stator fixed to the intermediate section and is mounted inside the stator and fixed to the driven section The rotor. The front bearing unit is such that the front branch section of the mandrel is rotatably supported by the first end of the casing. The rear bearing unit is such that the rear branch section of the mandrel unit is Rotatablely supported by the second end of the housing. In this case, the sleeve portion and the drum portion are mutually nested to ensure better concentricity when the tube is locked and the rod is locked, and the positioning plate member is set to 1371921 in the rear branch section, which can effectively improve the movement. Balance to ensure the stability and accuracy of the mandrel unit during operation. Another aspect of the spindle apparatus of the present invention capable of improving dynamic balance comprises: a spindle unit, a housing unit sleeved outside the spindle unit, and a core unit and the housing unit A motor and a front and rear bearing unit respectively disposed on both sides of the pitch motor. The mandrel unit extends along the axis and has a sleeve ′—a pull rod that is threaded along the axis and retracted into the sleeve, a collet that is locked with the rod along the axis, and a set a first elastic member between the sleeve and the pull rod and providing the collet value to fit inside the sleeve. The sleeve has a front support section, a rear support section, and a front and a rear support section The driven section between the driven section and the inner hole extending through the inside of the front and rear branch sections has a slanting Rg ·········································· An inner hole portion on the inner side of the hole portion, the pull rod has a pair of sleeve portions that should be the front support portion, an external thread portion provided on one side of the sleeve portion, and a straight rod portion that is oppositely disposed on the outer thread portion of the disk The tube has a conical portion that can be sleeved in the conical hole section, and a conical portion: a fitting portion that is concentrically nested in the guiding sleeve portion and a side of the fitting portion and the outer portion The threaded portion is screwed into the internal thread portion, and the L-th elastic member is sleeved inside the 4-sleeve sleeve and sleeved outside the straight rod portion. The housing unit is in the form of a hollow cylinder and is sleeved outside the spindle unit, and has a first portion corresponding to the front support section, and a pair of second end portions of the rear support section. = intermediate section 1 between the first and second ends and corresponding to the driven section. The horse t is mounted between the spindle unit and the housing unit and is drivable. "Axis rotation" and having a stator fixed to the intermediate section and a rotor mounted inside the S-scorpion and fixed to the driven section. The front bearing single

The C S 8 1379721 element is such that the front support section of the spindle unit is rotatably supported by the first end of the housing. The rear bearing unit is such that the rear branch section of the spindle unit is rotatably supported by the second end of the housing. Thereby, the sleeve portion and the fitting portion are respectively engaged with each other to ensure better concentricity when the tube inflammation is locked with the pull rod, and the pull rod is shortened, and the first elastic member is disposed in the inner hole. Effectively improve the dynamic balance and ensure the stability and accuracy of the mandrel unit during operation. The above-mentioned and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. As shown in FIG. 2, a first preferred embodiment of the spindle device capable of improving dynamic balance according to the present invention comprises a spindle unit 1A, a set of housing units 20 disposed outside the spindle unit 1 , and a mounting portion a motor 30 between the spindle unit 1 and the housing unit 20, a front bearing unit 40 disposed on the front side of the motor 30, a rear bearing unit 5 disposed on the rear side of the motor 30, and a fixed The headstock unit 60 on the rear side of the bearing unit 50 after 5 ha. The spindle unit 1A extends along an axis L, and has a sleeve 丨i, a pull rod 12 that is disposed in the sleeve 11 along the axis L, and a lock along the axis L with the pull rod 12. a collet 13 , a set of first elastic members 14 disposed between the sleeve n and the pull rod j 2 and k for the inside of the sleeve 11 to be engaged with the sleeve 11 and disposed on the sleeve A second elastic member 15 between the housing units 20. The hoisting sleeve 11 has a front support section 111 disposed on the outer peripheral surface, a rear support section 112 disposed opposite the front support section 111 along the axis 9 1379721, and a front and rear support sections 111, 112. a driven segment 113' - a positioning disk member 114 between the rear support portion 112 and the driven portion 113 and projecting from the outer peripheral surface, and a ring shoulder portion 115 disposed on the rear support portion 112, and An inner bore 16 extending through the interior of the front and rear support sections 111, 112, the inner bore 116 having a pair of tapered bore sections 117 that should be the front branch section 111 and an inner bore section disposed inside the tapered bore section 117 118. ^ Referring to FIG. 3', the tie rod 12 has a pair of sleeve portions 121 which should be the front support portion η, and an external thread portion 12 which is supported on the side of the side ferrule portion 121, and the external thread portion 122 The oppositely disposed straight rod portion 123, a shoulder portion 24 between the straight rod portion 123 and the sleeve portion 121 and perpendicular to the axis L, and the outer portion of the support portion 丨丨2 are disposed behind the s-shaped sleeve 11 Disc 125. The sleeve portion 121 has a straight circular short column shape and is located inside the external thread portion 122. The outer diameter of the disk 125 is larger than the straight rod portion 123. Referring to FIG. 3 , the collet 13 has a conical portion 131 disposed on the outer peripheral surface and sleeved in the tapered hole portion 117 , a fitting portion 132 disposed therein, and a fitting portion 132 disposed on the fitting portion 132 . An internal thread portion 133 that is screwed to the external thread portion 122 and an end surface 134 that faces the shoulder portion 124. The fitting portion 132 is recessed by the end surface 134 and is between the end surface 134 and the internal thread portion (3) and has a straight circular hole shape, and the aperture thereof is substantially equal to the outer diameter of the sleeve portion ,2ι, and can be guided The fitting portion 121 is concentrically nested. The first elastic member 14 is composed of a plurality of disc springs, and is sleeved between the ring shoulder U5 and the disc 125, and elastically holds the disc 125 and can pull the engine Pull rod 12 and provide the conical portion of the collet (3)

C S 10 1379721 always maintains a tendency to fit into the tapered bore section 117. The second elastic member 15 is composed of a plurality of disc springs which are superposed on the rear bearing unit 50. The housing unit 20 is hollow cylindrical and sleeved outside the spindle unit 1 , and has a main body 21 , a set of front axle housings 22 disposed at the front end of the main body 21 , and a set of the main body 21 . Rear axle seat 23 at the rear end. The main body 21 has a first end portion 211 corresponding to the front support portion 111, a pair of first end portions 212 of the rear support towers 111 and a middle portion between the first and second end portions 211, 212 and corresponding to each other. The intermediate section 213 of the driven section n3 is fixed in the first end portion 211, and the rear axle seat 23 is fixed in the second end portion 212 and has an axial direction for the positioning disk member 114. a positioning positioning shoulder surface 231 and a retaining ring 232 spaced from the positioning shoulder surface 231 and located on the other side of the positioning disk member 114. The second elastic member 15 is biased against the retaining ring 232 and the rear bearing unit. Between 5 〇. The motor 30 is mounted between the sleeve of the spindle unit 丨 and the housing unit 20, and can drive the spindle unit 10 to rotate, and has a stator 31 fixed to the intermediate section 213 and A rotor 3 2 mounted inside the stator 31 and fixed to the driven section 113. The front bearing unit 40 is sleeved between the sleeve 11 and the front axle housing 22 such that the front support section 111 of the axle unit 1G is rotatably received by the first end of the housing unit 20 The building. The rear bearing unit 50 is sleeved between the sleeve 11 and the rear axle housing 23. ,. The rear support section 112 of the spindle unit 1G is rotatably cut by the second end portion 212 of the housing unit 2G, and the first spring member 15 is springed against 11 1379721. Between the hoist ring 232 and the rear bearing unit 5 ,, the locating disk member H4 can be provided with a rotation gap relative to the positioning shoulder surface 231, and the rear bearing member 〇 is opposite to the second elastic member 15 The nut U9 on one side of the mandrel is axially constrained. The head unit 60 has a body fixing seat 61 fixed to the side of the rear axle base 23 and a pressure cylinder 62 for pushing the lever U. The pressure cylinder 62 can take the 1® disk 125 The collet ί3 is removed from the conical portion 且1 and the purpose of the tool change is achieved. Further, as shown in FIG. 2, at the time of assembly, the pull rod □ of the spindle unit ι and the collet 13 are screwed to each other by the outer and inner thread portions 122 and 133, and are connected to each other and at the outer (four) groove portion 122. When the 133 is locked, the fitting portion ΐ2ι and the β fitting portion 132 generate a concentric nesting function 'to ensure that the tie rod and the collet 13 are accurately aligned. ~ When the spindle device is processed, and the power source passes through the stator 3, an exciting action is generated to rotate the rotor 32, the spindle single & 1 can be driven to generate high-speed rotation, and the collet 13 is lost. It can be processed with a tool. When the spindle unit 10 is rotated at a high speed, the positioning of the positioning plate member 趋 is approached to the rear support portion 112, so that the quality of the front portion of the spindle device can be reduced, so that the front portion can be precisely controlled. The structural precision and the dynamic balance of the spindle unit can be improved, and the loss of the front and rear bearing units 4() and 5q is also low. Therefore, the advantages of the present invention can be further summarized as follows: - When the pull rod 12 of the mandrel single it 1G is locked by the outer and inner thread portions 22, 133, the sleeve portion 121 is also utilized. The fitting part

(S12 132 produces the function of concentric nesting' to ensure that the tie rod 12 and the collet 13 are quasi-reciprocal, and when the device is operated at a high speed, the spindle single W is prevented from shaking and the dynamic balance is good. Λ Locating the disk member 114 It is arranged to approach the rear support section 112, so that the front section of the δHail spindle device is reduced from the 丄 丄 丄 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The dynamic balance is good, and the use of the front and rear bearing units 40 and 50 is relatively average. - Further, as the 4 households do not, the spindle of the second embodiment of the present invention is placed, and the shaft unit 10 and the set are also provided. In the spindle unit 10, an outer casing unit 20, a motor 30 mounted on the spindle unit 1A, and the casing unit buckle, and a motor 30 disposed on the front side of the motor a bearing unit, a rear bearing unit 5〇 disposed on the rear side of the 6-head motor 30', and a headstock unit 6〇 fixed to the rear side of the rear bearing unit 50', wherein the housing unit 2〇 , the motor 3', the front and rear bearing units 40', 50, and the header unit 60' are substantially the same as in the first embodiment' and the difference is: The spindle unit 1〇 has a sleeve u, a tie rod 12 that is bored along the axis L and 70 is fully retracted into the sleeve 11, and a collet 13' that is locked with the rod 12 a first elastic member M disposed between the sleeve 11' and the tie rod 12 and provided with the collet 13' for the sleeve n, and the inner elastic member M is disposed on the sleeve 11, a second elastic member 15 between the housing unit 20 and an end piece 丨6 opposite to the collet 13' and locked at the end of the pull rod 12'. The sleeve 11' is along the The axis L is divided into a first tube member 17' and a second tube member 18' that abuts the first tube member 17', and has a front support portion 11'', a rear support portion 112', and a front portion. Rear support section 11丨, 112,

A driven section 113' between 13 and an inner bore 116' extending through the front and rear support sections 111', 112, the inner bore 116' having a pair of tapered bore sections 117' that should be the front support section lu An inner hole segment 丨18 disposed on the inner side of the tapered hole portion 117', and the front support portion 111, the tapered hole portion 117' is disposed on the first pipe member 17, and the inner hole portion 118 has a setting a small diameter portion 171' inside the first tube member 17 adjacent to the tapered hole portion 117', and a large diameter portion 18 disposed inside the second tube member 18, and a small and large diameter portion 171 ', 丨 8 丨, between and just located in the first pipe member 17, the positioning surface 182% of the side end of the rear support section 112, the supported section 113, is disposed on the second pipe member 18, the rear support section 112 The second elastic member 15 and the rear bearing unit 50 are mounted and positioned, and the second tubular member 18 further has a positioning disc member 114 that is close to the first tubular member 17. The tie rod 12 also has a set of joints 121, which are disposed on the sleeve portion (2), the outer outer screw (four) 122', and the outer thread portion 122, opposite to the straight rod portion 123, 'one between the sleeves The end portion 121, and the shoulder portion 124' of the straight portion in, is locked at the end of the straight ridge 4 123', and the first elastic member 14' corresponds to the inner hole portion 118' and Set of wants. Further, outside the straight straight portion 123', and between the positioning surface 182 and the end piece μ, the pull rod 12 and the elastic clamp 13' elastic tension are provided. The clamp 13' also has a sleeve which is disposed on the side of the circle (8) in the fitting portion (3) of the (4), and is screwed to the external thread portion 122, and is disposed in the enemy portion. 132, -124, opposite end faces 134. The embedding. The threaded portion 133, and a nested concentric with the shoulder name. ° 132' can guide the fitting portion 12], and the front axle seat 22 of the front end portion of the main Zhao η, 14 1379721, and one

The set is also in the 3 Xuan main body 21, the rear axle seat 23' of the rear end portion. The rain shaft seat 22'1 is right one Xu Gu~, A » . ^白〇有, the 盘 position plate U4, relative and spaced a shoulder surface 221 is provided, the rear axle seat 23 has a retaining ring, and the second cow 15 (four) is between the material ring 232 and the rear bearing μ 5q, and the elastic member 15 provides the The position plate ιΐ4 maintains a rotational gap with respect to the shoulder surface (3).

Therefore, when the pull rod 12 of the spindle unit 1 is engaged with the outer folder and the fourth (4) portions m' and 133' are locked, the sleeve portion 12 is also used to generate the sleeve portion 132 with the fitting portion 132. Concentricity|(4) Function, can ensure the professional pole 〗 2, and the collimator 13' accurate centering 'When the spindle device runs at high speed, avoid the spindle unit... The swaying motion is good. In addition, the first elastic member 14 is disposed in the inner hole 116', the length of the pull rod 12' is shortened and completely retracted into the sleeve, and the overall quality is reduced, and the dynamic balance can be effectively improved, thereby ensuring the The stability and accuracy of the mandrel single 10' operation.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent change of the patent application scope and the description of the invention is Modifications are still within the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a combined sectional view of a conventional spindle device; FIG. 2 is a combined sectional view showing a preferred embodiment of a spindle device capable of improving dynamic balance according to the present invention; A plan exploded view of a preferred embodiment illustrating an exploded view of a tie rod and a collet; and (S) 15 1379721. FIG. 4 is a combined sectional view of a second preferred embodiment of the spindle device capable of improving dynamic balance according to the present invention. .

16 1379721 [Main component symbol description]

10..................G-axis unit 14...the first elastic member L.......the axis 15...the second elastic member 11......the sleeve 20......the housing Unit 111 ··· ... front support section 21 ... ... body 112 ... ... rear support section 211 ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Positioning plate 213 ···· ... intermediate section 115.·· %: shoulder 22... ...such as car seat 116... inner hole 23... rear axle seat 117.···... cone hole section 231 ··· ... positioning the shoulder surface 118... ---- inside the hole section 232 ···· ... the retaining ring 119... •...the nut 30...the motor 12•...·...·the pull rod 31...the stator 121·· ··...the fit part 32...the rotor 122...the outer threaded part 40...the front bearing unit 123····the straight rod part 50...the rear bearing unit 124...the shoulder 60... Headstock single 兀 125 ····disc 61...... ...body solid seat 13 ·······向夹 62.........pressure cylinder. 131 ·· •...conical part 10, ...mandrel single 7L 132... •...Fitting part 11,... ··· ... bushing 133... .... internal threaded part 111, ... front support section 134 ··· ...·end face 112,·. ...·rear support section 17 1379721

1135 ··· ... driven segment 16, ... end member 114, ... positioning disk member 17, ..... ... first pipe member 116, ... inner hole 17 Γ ... ... ... small diameter portion 117, ... · ... cone section 18, ... ... second tube 118, ... inner hole section 181, ... large diameter section _ 12, ... ... pull rod 182, ... positioning surface 12 Γ · ... ... ferrule 20,. ... housing unit 122, external thread portion 21, ... main body 123, ... straight rod portion 22, ... shaft seat 124, ... shoulder portion 221 ' ... positioning shoulder surface 13, ... collet 23, ..... rear axle seat 131, ... conical portion 232, ... retaining ring 132, ... ... fitting portion 30, ... ... ... motor 133, internal thread portion 40 , _··. ... front bearing unit 134, ... end face 50, ..... ... rear bearing unit 14, ... ... ... first elastic member 60, .... head unit 15, .... ... Two elastic members 18

Claims (1)

1379721 _, the scope of patent application: A spindle device that can improve the dynamic balance, including: , the mandrel unit is extending along the axis, and has a sleeve, a pull rod that is threaded into the sleeve, a collet that is connected to the rod along the axis, and is sleeved a first elastic member between the sleeve and the pull rod and providing the sleeve to fit inside the sleeve, the sleeve having a front support section, a rear support section, and between the front and rear support sections The inner hole of the front and rear branch sections and a pair of locating discs which should be <selected and protruded from the outer peripheral surface, the inner hole has a pair of cones of the front support a hole section and an inner hole section disposed inside the tapered hole section, the tie rod has a sleeve portion corresponding to the front branch section, an external thread portion provided on the side of the joint portion, and the external thread a straight portion of the opposite portion of the tube is provided with a conical portion that can be sleeved in the conical hole portion, a fitting portion that can guide the concentric portion of the sleeve portion, and a fitting portion disposed at the fitting portion a female threaded portion that is screwed to the external threaded portion; a - the housing unit is in the form of a hollow cylinder and is sleeved outside the spindle unit and has a pair of first support sections An end portion, a second end portion corresponding to the rear branch portion - between the first and second ends and corresponding to the intermediate portion of the driven portion, - approaching the second end portion and for Positioning the axially positioned positioning shoulder of the disk; '"' 'Women between the spindle unit and the housing unit and driving the spindle unit to rotate' and having a stator fixed to the intermediate section and a rotor mounted inside the stator and fixed to the driven section; the front bearing unit is such that the front support section of the spindle unit is rotatably 19-turned by the first end of the housing And a rear bearing unit, which is a rear support section of the extra-alloy α α 吏6 玄心 axis, which is rotatably supported by the second end of the casing. 2. According to the scope of the patent application, In the month b, the spindle device for improving the dynamic balance 'in which the shank of the mandrel unit is in the shape of a straight circular short column, and the fitting portion of the collet is in the shape of a straight circular hole, which is far and wide. The aperture of the portion is substantially equal to the outer diameter of the sleeve" ' 3. According to the improvement described in item 2 of the patent application scope A balanced spindle device, wherein the mandrel unit h 4 > the λ 〇 彳 彳 dry nesting portion is located inside the externally threaded portion, the tie rod is more JL right _ people fight +, ', " a shoulder portion between the straight rod portion and the fitting portion, the collet further has an end surface opposite to the shoulder portion, the fitting portion is recessed by the end surface and is between the end surface and the internal thread portion The spindle device capable of improving the dynamic balance according to the scope of the patent application, wherein the housing unit further has a rear axle seat fixed to the second end, wherein the rear bearing unit is sleeved The rear axle seat has the positioning shoulder surface between the sleeve and the axle seat. 5. According to the towel, the main #device capable of improving the dynamic balance according to the fourth item of the patent scope, wherein the lever of the spindle unit has - a disc protruding from the outer portion of the support portion after the sleeve, the sleeve further having a ring shoulder disposed on the rear support portion, the first elastic member being sleeved between the ring shoulder and the disc A resilient force is applied to the disk and the cone value of the cylinder is provided to fit the tapered hole segment. 6. The main device capable of improving dynamic balance according to the fifth aspect of the patent scope, wherein the rear axle seat of the S-small housing unit has a block spaced apart from the positioning shoulder surface (S) 20 1379721 The ring, the mandrel should be 肖 早 早 早 7° 具有 设 设 设 设 设 设 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二 第二gap. • According to the scope of the patent application section 6. The spindle device for improving the dynamic balance, wherein, the first ' _ ^ ^ U ^ ^ of the spindle unit is composed of a plurality of disc-shaped laminated sheets respectively . 8. A spindle device capable of improving dynamic balance, comprising: a _;.-mandrel unit, extending along an axis and having a bushing, a pull rod that is threaded through the axis and retracted into the bushing, a collet that is coupled to the lever along the axis and - (d) between the sleeve and the remaining rod and providing a first elastic member that is clamped to the inner sleeve, the sleeve has a month J support & a rear support section, a driven section between the front and rear branch sections, and an inner bore extending through the interior of the front and rear branch sections, the inner bore having a tapered bore section corresponding to the front support section and _ an inner hole section disposed inside the tapered hole section, the pull rod has a sleeve portion corresponding to the front W section, an external thread portion provided on one side of the sleeve portion, and a reversed portion of the threaded portion The straight rod portion tt^ has a conical portion capable of arranging the money cone hole segment, and a fitting portion concentrically nested with the fitting portion and a side portion of the fitting portion and the external thread portion a threaded internal thread portion, the first elastic member is sleeved inside the sleeve and sleeved outside the straight rod portion; - the housing unit 'is hollow and sleeved The mandrel unit is external and has - a corresponding end portion of the front branch section, a second end portion corresponding to the rear support section, and - between the first and second ends and corresponding to the driven section The middle section; 21 1379721 motor is mounted between the spindle unit and the housing unit and can drive the S-Xuan spindle unit to rotate, and has a stator fixed to the intermediate section and mounted on the stator a rotor that is internally and fixed to the driven section; a front bearing unit that rotatably supports the front support section of the spindle unit by the first end of the housing; and a rear bearing unit that enables The rear support section of the spindle unit is rotatably supported by the second end of the housing. ♦ 9. According to the _ patent scope, the main vehicle capable of improving the dynamic balance is provided by the device, wherein the pull-up portion of the spindle unit has a straight circular short column shape, and the crotch portion of the collet is The shape of the straight hole is such that the diameter of the fitting portion is substantially the outer diameter of the fitting portion. , 1 0 · According to the scope of the patent application, Q J (4), item 9, can improve the inner side of the rod of the 'the spindle unit', the rod has a person D ^ standing in the external thread portion - a shoulder portion of the straight rod portion and the door of the fitting portion, the tube center further has between _ ώ λ AP - an opposite end surface of the shoulder portion, a portion is recessed by the end surface and is located at #〇Λ ^ 5 ... between the face and the internal thread.丨1 _ According to the scope of the patent application 笫S τ5 晋 Jin Li towel j, the main vehicle capable of improving the dynamic balance is worn, wherein the sleeve of the spindle unit has a - pipe fitting and a clothing axis and the The first pipe fittings are butt joints, the mouth is one g piece, the 5 haidi one battalion 曰 + cone hole section, the inner hole section and the ancient S piece have the same "有—located in the first battalion of the cone hole section adjacent The interior of the small squatting piece is disposed inside the second pipe and between the small and large diameter cattle. The 疋 position of the large diameter I of P, the life, has an end piece locked to the end of the straight rod, the first end in the locating surface and the end piece. The translation unit is held at the top and provides the round folder of the collet. A person (conical portion of the dynasty 22) The conical hole section is fitted with β 12 · The spindle device H capable of improving the dynamic balance according to the patent application scope " The second pipe member of the cymbal mandrel unit further has a first elastic member that is adjacent to the cow and a first elastic member that is disposed on the rear bearing unit and the door of the collision ring, and the housing unit has a fixed At the first end of the & shaft seat 'the front bearing unit is sleeved between the sleeve and the front axle seat 'this other axle seat has a positioning shoulder surface opposite to the positioning disk member and spaced apart The second resilient member provides the locating disk member with a rotational clearance relative to the locating shoulder surface. A spindle device capable of improving dynamic balance according to claim 12, wherein the first and second elastic members of the spindle unit are respectively composed of a plurality of disc springs. twenty three