CN207058222U - Clamping device, interior grinding motor and ceramic insertion core process equipment - Google Patents

Abstract

The utility model provides a kind of clamping device, interior grinding motor and ceramic insertion core process equipment, belongs to ceramic insertion core and manufactures field.Clamping device is used to clamp the part to be held for including outer circumference surface, including inner cylinder, outer barrel and take-up device, and on inner cylinder, both axially opposed can move outer sleeve.Inner retaining part is provided with inner cylinder, for clamping part to be held；Outer retaining part is provided with outer barrel, outer retaining part is sheathed on inner retaining part.Take-up device is connected with inner cylinder, and its pulling force make it that inner retaining part is close relative to outer retaining part, and in the presence of contact stress, the diameter of bore of inner retaining part diminishes, so as to clamp part to be held.Interior grinding motor employs above-mentioned clamping device, and ceramic insertion core process equipment is ground when ceramic insertion core rotates, while with grinding silk to its endoporus.Above-mentioned ceramic insertion core process equipment not only causes ceramic insertion core to be processed with reliable fixed, can also improve the machining accuracy of endoporus.

Description

Clamping device, interior grinding motor and ceramic insertion core process equipment

Technical field

It the utility model is related to ceramic insertion core and manufacture field, in particular to a kind of clamping device, interior grinding electricity Machine and ceramic insertion core process equipment.

Background technology

Ceramic insertion core, also known as ceramic ferrule, are the cylinders of precise centering in optical fiber connector plug, and center has one micro- Hole, as fixed optical fiber.It is a kind of special through sequence of recipe, the high accuracy being process by nano zircite (ZrO2) material Kind ceramic component.Size of ceramic insertion core itself is smaller, generally cylindric, and diameter of bore is 0.125mm or so, length is 12~15mm ceramic body；Its required precision is very high.Grinding for ceramic core internal hole is, it is necessary to first by ceramics to be ground Lock pin grips.Further, since ceramic core internal hole is very small, therefore the mode of traditional processing endoporus can not add to it Work, for ceramic core internal hole, usually penetrated into using grinding silk in endoporus to be ground, utilize the reciprocating motion of grinding silk To be ground to it.When being processed to ceramic insertion core, it is also necessary to there is clamping that is reliable and being convenient to mount and dismount to fill Put.

Therefore it provides a kind of clamping device, interior grinding motor and ceramic insertion core process equipment, this is for ceramic insertion core industry Development there is important realistic meaning.

Utility model content

The purpose of this utility model is the provision of a kind of clamping device, when the endoporus for treating holder is processed, The clamping device can highly reliably fix part to be held, and part to be held easily can be carried out into clamping or torn open Unload.

Another object of the present utility model is to provide grinding motor in one kind, and it can enter treating processing ceramic lock pin While row clamping, moment of torsion is provided to ceramic insertion core, so as to drive ceramic insertion core to rotate at a high speed, is easy to the grinding to endoporus.

Another object of the present utility model is to provide a kind of ceramic insertion core milling apparatus, and it can be easily to pottery The endoporus of porcelain lock pin is ground, and grinding accuracy is higher.

What the utility model was realized in：

A kind of clamping device, for clamping part to be held, the part to be held includes outer circumference surface, the clamping device bag Include inner cylinder, outer barrel and take-up device；

The end of the inner cylinder includes inner retaining part, and the inner retaining part includes multiple flutings, described to slot along described interior The axis direction extension of cylinder；The excircle of the inner retaining part is taper；The endoporus of the inner retaining part is used to install institute's ceramics Lock pin；

For the outer sleeve on the inner cylinder, the end of the outer barrel includes outer retaining part, the outer retaining part it is interior Circular hole is bellmouth；

The take-up device is connected with the inner cylinder so that the inner cylinder can be axially moved relative to the outer barrel, institute When stating outer retaining part with the inner retaining part clamping engagement, the inner retaining part produces elastic deformation.

Further,

The take-up device includes the first elastic component, and first elastic component is connected with the inner cylinder and the outer barrel；

The elastic force of first elastic component causes the relatively described outer barrel motion of the inner cylinder, and causes the outer retaining part folder The tight clamping part.

Further,

The clamping device also includes pushing meanss, and the pushing meanss include cylinder body and first piston；Described first lives Fill in and be slidably matched with the endoporus of the cylinder body；

The cylinder body is sheathed on the outer barrel, and the inner retaining part and the outer retaining part are placed in the outer of the cylinder body Portion；The cylinder body is connected with the outer barrel；

Connection through hole is provided with the cylinder body, the fluid entered from the connection through hole can promote the first piston Motion, and then promote the inner cylinder motion.

Further,

Impeller-hub and the second elastic component are additionally provided with the middle part of the first piston, the impeller-hub is vertically connected at described The end face of first piston, the impeller-hub and the inner cylinder are coaxial；

The first piston is connected by second elastic component with the cylinder body, and the elastic force of second elastic component causes The first piston does remote motion relative to the inner cylinder.

Further,

The impeller-hub is provided with central through hole, and the impeller-hub also includes one-way valve structures；Fluid can be along in described Heart through hole and one-way valve structures flowing；

The inner cylinder includes the first blind hole, the second blind hole and dividing plate, and first blind hole and second blind hole are along institute The axially extending of inner cylinder is stated, first blind hole and second blind hole are separated by the dividing plate；The impeller-hub with it is described When inner cylinder abuts, the outlet of the one-way valve structures connects with second blind hole；

The inner cylinder includes first and coordinates section and second to coordinate section, and the outer barrel includes the 3rd and coordinates section and the 4th to coordinate Section；The 3rd cooperation section is sheathed on described first and coordinates section, and gap setting forms the first space of annular, and described first is empty Between lead to the inner retaining part；The second cooperation section is sheathed on the described 4th and coordinates section, is slidably matched between the two, and pass through Seal seals；

The first intercommunicating pore is additionally provided with the inner cylinder, first intercommunicating pore is empty with described first by second blind hole Between connect.

Further,

Second piston is additionally provided with the impeller-hub, the second piston is arranged at intervals and formed with the first piston Second space；The second piston is slidably matched with the impeller-hub；

The second intercommunicating pore is additionally provided with the impeller-hub, second intercommunicating pore is empty with described second by the centre bore Between connect.

Further,

The 3rd piston, the end of the one-way valve structures and the end interval of the inner cylinder are additionally provided with the impeller-hub Set；

3rd piston is arranged on the end of the impeller-hub；The fluid entered from the connection through hole of the cylinder body can The 3rd piston movement is promoted, and then promotes the impeller-hub motion.

Further,

The interior grinding motor includes rotor, stator and described clamping device；The rotor can after relative to described Stator rotation, the rotor are connected with the outer barrel.

Further,

The inner cylinder includes the first blind hole, the second blind hole and dividing plate, and first blind hole and second blind hole are along institute The axially extending of inner cylinder is stated, first blind hole and second blind hole are separated by the dividing plate；

Ceramic insertion core is provided with the inner cylinder, the size of institute's ceramic insertion core is standard size, and institute's ceramic insertion core is arranged on First blind hole is close to the position of the inner retaining part.

A kind of ceramic insertion core process equipment, the process equipment include grinding silk, drive device and described interior grinding electricity Machine；The grinding silk is arranged in the first blind hole of the inner cylinder, and the grinding silk is connected with the drive device, and can be done Move back and forth.

The beneficial effects of the utility model are：Clamping device that the utility model is obtained by above-mentioned design, interior grinding electricity Machine and ceramic insertion core process equipment.When specifically used, part to be held is arranged in the endoporus of inner retaining part.Take-up device with it is interior Cylinder connection, its pulling force make it that inner retaining part is close relative to outer retaining part, in the presence of contact stress, the endoporus of inner retaining part Diameter diminishes, so as to clamp part to be held.When needing to dismantle part to be held, take-up device is loosened, inner cylinder axial force is given, makes Inner retaining part moves towards the direction away from outer retaining part, now can be to pull down so that the recovery of shape of inner retaining part The part to be held processed.Interior grinding motor employs above-mentioned clamping device, and drives inner cylinder, outer barrel by rotor And ceramic insertion core rotation, ceramic insertion core process equipment are ground when ceramic insertion core rotates, while with grinding silk to its endoporus. Above-mentioned ceramic insertion core process equipment not only causes ceramic insertion core to be processed with reliable fixed, can also improve endoporus Machining accuracy.

Brief description of the drawings

, below will be to required in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment The accompanying drawing used is briefly described, it will be appreciated that and the following drawings illustrate only some embodiments of the present utility model, therefore not The restriction to scope is should be considered as, for those of ordinary skill in the art, on the premise of not paying creative work, Other related accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the full sectional view for the interior grinding motor that the utility model embodiment provides；

Fig. 2 is the outline drawing for the interior grinding motor that the utility model embodiment provides；

Fig. 3 is the inner cylinder and the partial view of outer barrel assembling that the utility model embodiment provides；

Fig. 4 is the inner tube structure schematic diagram that the utility model embodiment provides.

Icon：- clamping device；110- inner cylinders；111- first coordinates section；112- second coordinates section；113- inner retaining parts； The blind holes of 114- first；The blind holes of 115- second；116- dividing plates；The intercommunicating pores of 117- first；120- outer barrels；122- outer retaining parts；130- Take-up device；The elastic components of 132- first；140- pushing meanss；141- first pistons；142- second pistons；The pistons of 143- the 3rd； 144- cylinder bodies；145- impeller-hubs；1451- central through holes；1452- one-way valve structures；The elastic components of 146- second；Grinding electricity in 200- Machine；210- rotors；220- stators.

Embodiment

To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with this practicality Accompanying drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, shown So, described embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on this practicality Embodiment in new, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of the utility model protection.

Therefore, below the detailed description of the embodiment of the present utility model to providing in the accompanying drawings be not intended to limit will The scope of the utility model of protection is sought, but is merely representative of selected embodiment of the present utility model.Based on the utility model In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Mode, belong to the scope of the utility model protection.

In description of the present utility model, it is to be understood that the term of indicating position or position relationship is based on accompanying drawing Shown orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply institute The equipment or element of finger must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this reality With new limitation.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two The connection of element internal or the interaction relationship of two elements.For the ordinary skill in the art, can basis Concrete condition understands concrete meaning of the above-mentioned term in the utility model.

, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship be based on orientation shown in the drawings or position relationship, or The utility model product using when the orientation usually put or position relationship, be for only for ease of description the utility model and letter Change description, rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and Operation, therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for area Divide description, and it is not intended that instruction or hint relative importance.

In addition, the term such as term " level ", " vertical ", " pendency " is not offered as requiring part abswolute level or pendency, and It is to be slightly tilted.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", is not to represent the structure Must be fully horizontal, but can be slightly tilted.

In the utility model, unless otherwise clearly defined and limited, fisrt feature is on or below second feature Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features Between other characterisation contact.Moreover, fisrt feature is on second feature, top and above include fisrt feature the Directly over two features and oblique upper, or be merely representative of fisrt feature level height and be higher than second feature.Fisrt feature is special second Under sign, lower section and fisrt feature included below are immediately below second feature and obliquely downward, or are merely representative of fisrt feature level Highly it is less than second feature.

Embodiment 1：

Such as Fig. 1, a kind of clamping device 100 is present embodiments provided, being mainly used in clamping includes the to be held of outer circumference surface Part, it is processed in order to treat holder.This clamping device 100 mainly includes inner cylinder 110, outer barrel 120, take-up device 130 and pushing meanss 140, outer barrel 120 be sheathed on inner cylinder 110, both axially opposed can move.Take-up device 130 with Inner cylinder 110 connects, and its pulling force make it that inner cylinder 110 is close relative to outer barrel 120, and the thrust of pushing meanss 140 causes the phase of inner cylinder 110 It is remote for outer barrel 120.

Such as Fig. 1 and Fig. 2, inner cylinder 110 is an elongated tubular structure, and the end of inner cylinder 110 includes inner retaining part 113, interior The excircle diameter of clamping part 113 is inwardly gradually reduced by end so that the profile of inner retaining part 113 is in coniform, inner retaining part Multiple flutings are additionally provided with 113 side wall, slots and the end of inner retaining part 113 is extended to along the axis direction of inner retaining part 113 Portion.The endoporus of inner retaining part 113 is used to install part to be held, when being acted on by external force, the elastic deformation of inner retaining part 113, The width of rebate of fluting diminishes, so that the endoporus of inner retaining part 113 directly diminishes, so as to clamp part to be held.Inner cylinder 110 The other end be provided with circular baffle plate, the diameter of baffle plate is more than the diameter of inner cylinder 110.

In addition, inner cylinder 110 includes the first blind hole 114, the second blind hole 115 and dividing plate 116.First blind hole 114, the second blind hole 115 extend along the length direction of inner cylinder 110, and dividing plate 116 separates the first blind hole 114 and the second blind hole 115.Inner cylinder 110 is whole The first cooperation section 111 and second can be divided on body and coordinate section 112, the first blind hole 114 extends along the first cooperation section 111, and second is blind Hole 115 extends along the second cooperation section 112.The first intercommunicating pore 117, the edge of the first intercommunicating pore 117 are additionally provided with second cooperation section 112 The diametric(al) extension of inner cylinder 110, the second blind hole 115 is in communication with the outside.And the cross section of the first intercommunicating pore 117 is bar Shape, the first intercommunicating pore 117 are larger in the axis direction size of inner cylinder 110.

The end of outer barrel 120 includes being clamping part, and the endoporus of outer retaining part 122 is used for the outer surface with inner retaining part 113 Coordinate, the diameter of the endoporus is inwardly gradually reduced by end, i.e., the endoporus of outer retaining part 122 is conical bore.

Overall the 3rd cooperation section and the 4th that can be divided into of outer barrel 120 coordinates section, and the 3rd cooperation section is sheathed on the first of inner cylinder 110 Coordinate in section 111, be provided with gap between the two, form the first space of annular.4th cooperation section is matched somebody with somebody with the second of inner cylinder 110 Close section 112 to be slidably matched, and sealed between the 4th cooperation section and the second cooperation section 112.

Take-up device 130 includes the first elastic component 132, and the first elastic component 132 is connected with inner cylinder 110 and outer barrel 120, its bullet Power causes inner cylinder 110 to be moved with respect to outer barrel 120, that is, make it that inner retaining part 113 is close relative to outer retaining part 122.Therefore, outer clip Hold and contact stress is produced between the internal conical surface in portion 122 and the outer conical surface of inner retaining part 113, inner retaining part 113 deforms, in it Bore dia diminishes.In the present embodiment, the first elastic component 132 employs disk spring, after outer barrel 120 is sheathed on inner cylinder 110, outside The end of cylinder 120 is set with the baffle interval of the end of inner cylinder 110, and disk spring is set on inner cylinder 110, and is located at above-mentioned baffle plate Between the end of outer barrel 120.

In other embodiments, the first elastic component 132 can use other parts, for example, can be compression spring or Rubber-like etc. can provide the structure of elastic force.In addition, take-up device 130 is also not necessarily limited to the structure in the present embodiment, in other realities Apply in example, other structures can also be used, as long as 110 1 axial forces of inner cylinder can be given so that inner retaining part 113 is relative to outer Clamping part 122 is close.

Clamping device 100 also includes pushing meanss 140, and pushing meanss 140 can give the axial force of inner cylinder 110, the axial force The axial force provided with take-up device 130 is in opposite direction.Pushing meanss 140 promote inner cylinder 110 so that inner retaining part 113 is relative It is remote in outer retaining part 122, so that the deformation of inner retaining part 113 is restored, part to be held easy to disassemble.

Pushing meanss 140 include cylinder body 144 and first piston 141, and cylinder body 144 is sheathed on outer barrel 120, and and outer barrel 120 connections.After the completion of outer barrel 120, inner cylinder 110 assemble with cylinder body 144, outer retaining part 122, inner retaining part 113 are located at cylinder body 144 outside.Connection through hole is additionally provided with cylinder body 144, for being connected with external fluid conveying device, fluid is logical by connecting After hole is entered in cylinder body 144, fluid forces first piston 141 moves towards close to the direction of inner cylinder 110, and then promotes inner cylinder 110 motions.

Further, pushing meanss 140 also include the elastic component 146 of impeller-hub 145 and second, and impeller-hub 145 is vertically connected at The end face of first piston 141, and be coaxially disposed with inner cylinder 110.One end of second elastic component 146 is connected with first piston 141, The other end is connected with cylinder body 144, and its elastic force causes first piston 141 to do remote motion relative to inner cylinder 110.Set due to above-mentioned Meter, when clamping device 100 needs to clamp part to be held, the end of impeller-hub 145 and inner cylinder 110 keeps gap, so as to not produce Raw active force so that clamp more reliable.

Further, impeller-hub 145 is additionally provided with central through hole 1451, and enters including one-way valve structures 1452, fluid One-way valve structures 1452 can be opened after central through hole 1451.Detailed process is, after fluid is entered in cylinder body 144, promotes First piston 141 moves, and first piston 141 drives impeller-hub 145 to move, the one-way valve structures 1452 and inner cylinder of impeller-hub 145 110 abut, and promote inner cylinder 110 to move.When the first elastic component of motion compresses 132 of inner cylinder 110 to a certain extent after, inner cylinder 110 No longer move, the pressure of fluid gradually increases, final to open one-way valve structures 1452, and fluid is entered by one-way valve structures 1452 Into the second blind hole 115 of inner cylinder 110, and then entered by the first intercommunicating pore 117 between inner cylinder 110 and outer barrel 120 In one space, and eventually arrive between inner retaining part 113 and outer retaining part 122.Due to chip can be produced when processing part to be held Or powder, therefore it can be cleared up by flushing of the fluid to inner cylinder 110 and outer barrel 120.

Further, the piston 143 of second piston 142 and the 3rd is additionally provided with impeller-hub 145, second piston 142 is with promoting Axle 145 is slidably matched；Second piston 142 is arranged at intervals with first piston 141 and forms second space.On impeller-hub 145 also The second intercommunicating pore is provided with, the second intercommunicating pore connects centre bore with second space.3rd piston 143 is arranged on impeller-hub 145 End；The fluid entered from the connection through hole of cylinder body 144 can promote the 3rd piston 143 to move, and then promote the promotion Axle 145 moves.

Detailed process is, after fluid is entered in cylinder body 144, promotes point piston driving impeller-hub 145 to move first so that The one-way valve structures 1452 of impeller-hub 145 and the end abutment of inner cylinder 110, and fluid enter simultaneously first piston 141 with Between second piston 142, with the increase of pressure, fluid overcame the elastic force of the second elastic component 146 before this, promoted impeller-hub 145 Inner cylinder 110 is compressed, and then the second elastic component 146 is deformed, inner retaining part 113 is remote relative to outer retaining part 122, and release is treated Holder.With increasing for fluid, pressure further increases, and fluid opens one-way valve structures 1452, and fluid is from one-way valve structures 1452 enter in the second blind hole 115 of inner cylinder 110, and are arrived eventually through to the first space between inner cylinder 110 and outer barrel 120 Up between inner retaining part 113 and outer retaining part 122.

It should be noted that in other embodiments, first piston 141 and second piston 142 can also be only set, omitted 3rd piston 143；Fluid in the present embodiment employs compressed air, can use other fluids in other embodiments；Or Person in other embodiments, can also be not provided with pushing meanss 140, and operator gives inner cylinder 110 1 axial forces.

Embodiment 2：

Present embodiments provide a kind of ceramic insertion core process equipment (not shown), including interior grinding motor 200, grinding silk (not shown) and drive device (not shown).Interior grinding motor 200 includes rotor 210, stator 220 and embodiment 1 or its deformation In clamping device 100.Rotor 210 can be rotated relative to stator 220, and rotor 210 is connected with outer barrel 120.Rotor 210 Structure of the prior art can be directly used with the structure of stator 220.It is in addition, close in the first blind hole 114 of inner cylinder 110 The position of clamping part is provided with standard-sized ceramic insertion core.

When outer barrel 120 and inner cylinder 110 are by 122 clamping engagement of inner retaining part 113 and outer retaining part, rotating shaft drives outer barrel 120 rotate, and outer barrel 120 drives inner cylinder 110 to rotate by frictional force, and then drive ceramic insertion core to be processed to rotate.

Grinding silk is arranged in the first blind hole 114 of inner cylinder 110, and is connected with drive device, and drive device drives grinding Silk is moved reciprocatingly, while ceramic insertion core to be processed rotates at a high speed, and grinding silk is ground to endoporus.

Because there is provided the ceramic insertion core of scale size, for grinding silk when processing ceramic insertion core to be ground, its precision can To be guaranteed.Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, it is right For those skilled in the art, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and Within principle, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

1. a kind of clamping device, for clamping part to be held, the part to be held includes outer circumference surface, it is characterised in that

The clamping device includes inner cylinder, outer barrel and take-up device；

The end of the inner cylinder includes inner retaining part, and the inner retaining part includes multiple flutings, described to slot along the inner cylinder Axis direction extends；The excircle of the inner retaining part is taper；The endoporus of the inner retaining part is used to install institute's ceramic insertion core；

For the outer sleeve on the inner cylinder, the end of the outer barrel includes outer retaining part, the interior circular hole of the outer retaining part For bellmouth；

The take-up device is connected with the inner cylinder so that the inner cylinder can be axially moved relative to the outer barrel, described outer When clamping part is with the inner retaining part clamping engagement, the inner retaining part produces elastic deformation.

2. clamping device according to claim 1, it is characterised in that the take-up device includes the first elastic component, described First elastic component is connected with the inner cylinder and the outer barrel；

The elastic force of first elastic component causes the relatively described outer barrel motion of the inner cylinder, and causes the outer retaining part to clamp institute State clamping part.

3. clamping device according to claim 2, it is characterised in that the clamping device also includes pushing meanss, described Pushing meanss include cylinder body and first piston；The endoporus of the first piston and the cylinder body is slidably matched；

The cylinder body is sheathed on the outer barrel, and the inner retaining part and the outer retaining part are placed in the outside of the cylinder body；Institute Cylinder body is stated to be connected with the outer barrel；

Connection through hole is provided with the cylinder body, the fluid entered from the connection through hole can promote the first piston to transport It is dynamic, and then promote the inner cylinder motion.

4. clamping device according to claim 3, it is characterised in that be additionally provided with impeller-hub in the middle part of the first piston With the second elastic component, the impeller-hub is vertically connected at the end face of the first piston, and the impeller-hub and the inner cylinder are coaxial；

The first piston is connected by second elastic component with the cylinder body, and the elastic force of second elastic component causes described First piston does remote motion relative to the inner cylinder.

5. clamping device according to claim 4, it is characterised in that the impeller-hub is provided with central through hole, described to push away Moving axis also includes one-way valve structures；Fluid can flow along the central through hole and the one-way valve structures；

The inner cylinder includes the first blind hole, the second blind hole and dividing plate, and first blind hole and second blind hole are along described interior Cylinder it is axially extending, first blind hole and second blind hole are separated by the dividing plate；The impeller-hub and the inner cylinder During abutting, the outlet of the one-way valve structures connects with second blind hole；

The inner cylinder includes first and coordinates section and second to coordinate section, and the outer barrel includes the 3rd and coordinates section and the 4th to coordinate section；Institute State the 3rd cooperation section and be sheathed on the first cooperation section, and gap setting forms the first space of annular, first space leads to To the inner retaining part；The second cooperation section is sheathed on the described 4th and coordinates section, is slidably matched between the two, and pass through sealing Part seals；

The first intercommunicating pore is additionally provided with the inner cylinder, first intercommunicating pore connects second blind hole and first space It is logical.

6. clamping device according to claim 5, it is characterised in that second piston, institute are additionally provided with the impeller-hub Second piston is stated to be arranged at intervals with the first piston and form second space；The second piston is slided with the impeller-hub matches somebody with somebody Close；

The second intercommunicating pore is additionally provided with the impeller-hub, second intercommunicating pore connects the centre bore and the second space It is logical.

7. clamping device according to claim 6, it is characterised in that the 3rd piston, institute are additionally provided with the impeller-hub The end of one-way valve structures is stated to be arranged at intervals with the end of the inner cylinder；

3rd piston is arranged on the end of the impeller-hub；The fluid entered from the connection through hole of the cylinder body can promote 3rd piston movement, and then promote the impeller-hub motion.

8. grinding motor, the endoporus for milled ceramic lock pin in a kind of, it is characterised in that the interior grinding motor includes turning Clamping device described in son, stator and any one of claim 1 to 7；The rotor can after relative to the stator rotation, institute Rotor is stated to be connected with the outer barrel.

9. interior grinding motor according to claim 8, it is characterised in that

The inner cylinder includes the first blind hole, the second blind hole and dividing plate, and first blind hole and second blind hole are along described interior Cylinder it is axially extending,

Ceramic insertion core is provided with the inner cylinder, the size of institute's ceramic insertion core is standard size, and institute's ceramic insertion core is arranged on described First blind hole is close to the position of the inner retaining part.

10. a kind of ceramic insertion core process equipment, it is characterised in that the process equipment includes grinding silk, drive device and right It is required that the interior grinding motor described in 8 or 9；The grinding silk is arranged in the first blind hole of the inner cylinder, the grinding silk and institute Drive device connection is stated, and can be moved reciprocatingly.