CN203077117U

CN203077117U - Tool and automatic tool changing device

Info

Publication number: CN203077117U
Application number: CN2013200261445U
Authority: CN
Inventors: 上河原敦; 富泽卓弥
Original assignee: Nakamura Tome Precision Industry Co Ltd
Current assignee: Nakamura Tome Precision Industry Co Ltd
Priority date: 2011-06-24
Filing date: 2012-06-21
Publication date: 2013-07-24
Anticipated expiration: 2022-06-21
Also published as: KR200482697Y1; JP5808164B2; JP2013006246A; TWM444888U; CN202862020U; KR20130000102U

Abstract

The utility model provides a tool and an automatic tool changing device. Tools which are changed automatically can be assembled and disassembled relative to a tool shaft by simple actions. The tool and the automatic tool changing device are characterized in that a cylindrical face or a conical face is arranged between an edge part (a grinding wheel or a tool head) and a handle part which is combined with the tool shaft or on one side, opposite to the handle part, of the edge part, wherein the cylindrical face or the conical face is embedded with a cylindrical concave face arranged on a tool rest of a tool changer or a conical concave face arranged on a tool rest of a tool changer. According to the tool and the automatic tool changing device, the tool is arranged on the tool shaft of a lathe with three sides of the edge part facing downwards in a vertical posture, and in the state that the cylindrical face or the conical face is embedded with the cylindrical concave face or the conical concave face arranged on the tool rest of the tool changer, the tool is maintained on the tool rest of the tool changer with the edge part facing downwards in the vertical gesture.

Description

Cutter and automatic tool be changing device more

The application is to be on June 21st, 2012, denomination of invention to be the dividing an application of utility application of 201220301438.X for " cutter and automatic tool be changing device more ", application number the applying date.

Technical field

The utility model relates to and possesses the automatic tool more employed cutter of lathe, and the ATC of this lathe of changing device (below, be called " ATC ").

Background technology

Known following lathe: it possesses mounting cutter and rotary cutter axle that is rotated and the ATC that is installed in the cutter of this cutter shaft.The employed cutter of this lathe (below, only be called " lathe ") possesses: the shank of being controlled by cutter shaft; With the blade that is used for processing work (comprising abrasive particle and emery wheel).In addition, ATC possesses: the tool magazine of taking in a plurality of cutters; And between this tool magazine and cutter shaft the handing-over cutter more changing device.

With regard to the combination of cutter shaft and cutter, be generally structure that the chuck that utilize to open and close controls the shank of cutter and the chimeric structure that forms by taper shank and taper hole.In the former structure, shank is a staight shank cylindraceous, and in the latter's the structure, shank is the thick cone shape taper shank of point of a knife side.Fig. 8 is the figure that the cutter changing action in the past of the cutter 2 that possesses taper shank 21b schematically is shown, and label 41 is tool rests (pot) of tool magazine, and label 7 is the more changing devices that carry out the handing-over of cutter 2 between cutter shaft 1 and tool rest 41.Tool rest 41 possesses the circular cone concave surface 42 chimeric with the taper shank 21b of cutter, and cutter 2 remains in tool rest 41 so that taper shank 21b is embedded in the state of this circular cone concave surface 42.

More changing device 7 among the figure carries out the structure that 180 degree revolutions reach the end of the gyroaxis 71 that moves back and forth vertically for the revoliving arm 73 that two ends is possessed finger 72 is installed in.More the flange 28 of the cutter that is kept by tool rest 41 is controlled and the flange 28 of the cutter that kept by cutter shaft and moving down in the finger 72 at changing device 7 usefulness two ends, thus,

cutter

2,2 is extracted from cutter shaft 1 and tool rest 41.Next, gyroaxis 71 carries out 180 degree revolutions and moves up, and thus, the taper shank 21b of

cutter

2,2 is inserted into cutter shaft 1 and tool rest 41, thereby carries out the exchange of

cutter

2,2 between tool rest 41 and cutter shaft 1.

The tool magazine of ATC in the past is to remain on the part (referring to formula) of the flange that the root of handle is provided with by the finger that the tool rest that is used in the tool magazine setting keeps the part (tool rest formula) of the shank of being controlled by cutter shaft or is used in the tool magazine setting, thereby takes in a large amount of cutters that are replaced.

Yet tool rest formula ATC need join the more changing device of cutter between cutter shaft and tool magazine.On the other hand, refer to that formula ATC need be provided with the finger being located on a large amount of knife rests of tool magazine, the complex structure of tool magazine, and, when changing cutter, need carry out the switching of finger.Therefore, tool rest formula and refer to that formula all exists the complex structure of ATC and the complicated such problem of cutter changing action.

The utility model content

Problem of the present utility model is, cutter that the cutter that acquisition can will be changed automatically with simpler action loads and unloads with respect to cutter shaft and the ATC that is used for changing automatically this cutter.

The cutter of first aspect of the present utility model possesses the shank of being controlled by the rotary cutter axle, it is characterized in that, this cutter possesses the big taper seat of shank side diameter between shank and blade, this taper seat possesses and chimeric form accuracy and the surface accuracy of circular cone concave surface that is provided with at the knife rest of tool magazine.

In addition, the cutter of second aspect of the present utility model possesses the shank of being controlled by the rotary cutter axle, it is characterized in that, this cutter possesses between shank and blade: the taper seat that shank side diameter is big; With the blade side adjacency of this taper seat, than the 2nd little and reverse taper seat of this taper seat diameter; And at the blade side of the 2nd taper seat mode the 3rd taper seat that be provided with, that blade side diameter is little with the bigger diameter end adjacency of bigger diameter end and the 2nd taper seat.

In addition, the cutter of the third aspect of the present utility model possesses the shank of being controlled by the rotary cutter axle, it is characterized in that, this cutter possesses barrel surface between shank and blade, this barrel surface is chimeric with the cylinder concave surface that is provided with at the knife rest of tool magazine, and this cutter remains in this knife rest.

In addition, the cutter of fourth aspect of the present utility model possesses the shank of being controlled by the rotary cutter axle, it is characterized in that, this cutter possesses between shank and blade: barrel surface; With the blade side adjacency of this barrel surface, than this taper seat that barrel surface diameter is little and blade side diameter is big; And at the blade side of this taper seat mode the 2nd taper seat that be provided with, that blade side diameter is little with the bigger diameter end adjacency of bigger diameter end and this taper seat.

In addition, the cutter of the 5th aspect of the present utility model possesses the shank of being controlled by the rotary cutter axle, it is characterized in that, side opposite with shank at blade possesses the big taper seat of shank side diameter, and this taper seat possesses and chimeric form accuracy and the surface accuracy of circular cone concave surface that is provided with at the knife rest of tool magazine.

In addition, the automatic tool of the 6th aspect of the present utility model more changing device is characterised in that this automatic tool more changing device possesses a plurality of knife rests at tool magazine, and each knife rest possesses: the circular cone concave surface chimeric with the taper seat of the described cutter of second aspect; Be positioned at the path side of this circular cone concave surface and the opening that can pass through by the part of blade side than described the 2nd taper seat; And the 2nd taper seat butt of terminal and the cutter that kept and to the crimp of this cutter towards its blade side application of force, under the consistent state that is positioned on the same axis in axle center of 1 knife rest in the axle center of the cutter shaft that makes lathe and a plurality of knife rests, utilize the advance and retreat action of cutter shaft, between tool magazine and lathe, carry out the handing-over of cutter towards described 1 knife rest.

In addition, the automatic tool of the 7th aspect of the present utility model more changing device is characterised in that this automatic tool more changing device possesses a plurality of knife rests at tool magazine, and each knife rest possesses: the cylinder concave surface chimeric with the barrel surface of the described cutter of fourth aspect; Be positioned at the depth side of this cylinder concave surface and the opening that can pass through by the part of blade side than described the 1st taper seat; And the 1st taper seat butt of terminal and the cutter that kept and to the crimp of this cutter towards its blade side application of force, under the consistent state that is positioned on the same axis in axle center of 1 knife rest in the axle center of the cutter shaft that makes lathe and a plurality of knife rests, utilize the advance and retreat action of cutter shaft, between tool magazine and lathe, carry out the handing-over of cutter towards described 1 knife rest.

In addition, the automatic tool of eight aspect of the present utility model more changing device is characterised in that, this automatic tool more changing device possesses a plurality of knife rests at tool magazine, and each knife rest possesses: with the barrel surface or the chimeric cylinder concave surface or the circular cone concave surface of taper seat of the described cutter of either side in first to the 5th aspect; And to the cutter that kept crimping unit towards its blade side application of force, the axle center of 1 knife rest in the axle center of the cutter shaft that makes lathe and a plurality of knife rests is consistent to be positioned under the state on the same axis of vertical direction, utilize the advance and retreat action of cutter shaft, between tool magazine and lathe, carry out the handing-over of cutter towards described 1 knife rest.

Cutter of the present utility model is to possess blade 3(emery wheel 3a or cutter head 3b) and the shank 21(staight shank 21a or the taper shank 21b that combine with cutter shaft), the cutter 2(2a of the automatic replacing usefulness of lathe～2d).Cutter 2 of the present utility model is characterised in that, between shank 21 and blade 3, perhaps in the side opposite of blade 3 with shank 21, possess the barrel surface chimeric with the cylinder concave surface 48 that is provided with at the knife rest 4 of tool magazine or circular cone concave surface 42 (below, be called " maintenance barrel surface ") 38 or shank 21 side diameters are big and taper seat that blade 3 side diameters are little (below, be called " maintenance taper seat ") 22.

The shank 21 of cutter 2 of the present utility model is controlled by the chuck (situation of staight shank) of cutter shaft or is chimeric with the taper hole (situation of taper shank) of cutter shaft, thus with cutter 2 so that blade 3 sides vertical posture down is installed on the cutter shaft 1 of lathe.In addition, cutter 2 of the present utility model, keep barrel surface 38 keep cylinder concave surface 48 that taper seat 22 and knife rest 4 at tool magazine 5 be provided with or state that circular cone concave surface 42 is chimeric under, cutter 2 is so that blade 3 vertical posture down is held in the knife rest 4 of tool magazine.In the time will keeping barrel surface 38 or keep taper seat 22 to be located between shank 21 and the blade 3, knife rest 4 keep barrel surface 38 below or the path side of circular cone concave surface 42, the opening 45 that possesses blade 3 and keep the part of the main body 25 of this blade to pass through.

When knife rest 4 is difficult to be provided with opening 45 as described above, promptly, because the blade of cutter is big thereby the diameter of cylinder concave surface, circular cone concave surface when becoming the big footpath of impracticable degree, side opposite with shank at blade 3 is provided with the maintenance taper seat, keep the circular cone concave surface of taper seat and knife rest side chimeric by this, cutter is remained in knife rest.But this structure only in short-term can be practical at the axial length of cutter 2.

Because knife rest 4 is so that the axis of cutter 2 keeps along the mode of vertical direction, therefore, and chimeric with the cylinder concave surface 48 or the circular cone concave surface 42 of knife rest 4, the position of cutter 2 in knife rest 4 is maintained by deadweight for cutter 2.For safety, preferably be provided with the maintenance barrel surface 38 of cutter or keep taper seat 22) towards the cylinder concave surface 48 of knife rest or crimp 6(6a, the 6b of circular cone concave surface 42 application of forces at knife rest 4.When the positional precision in the axle center of wanting to improve the cutter that is kept by knife rest, tilt accuracy, preferably by keeping the chimeric cutter that keeps of taper seat 22 and circular cone concave surface 42.

ATC of the present utility model is characterised in that, under the opposed state of big footpath side opening end of the openend of the cutter installation end 11 that makes cutter shaft 1 and the cylinder concave surface 48 of knife rest 4 or circular cone concave surface 42, by means of the on-off action of cutter grasping devices such as the chuck of the cutter shaft side at the axial advance and retreat action of cutter shaft 1 and its in-out end place or pull bar, direct (not via changing device) loading and unloading cutter 2 of the present utility model between the knife rest 4 of cutter shaft 1 and tool magazine.

ATC of the present utility model be particularly suited for cutter shaft 1 make its cutter installation end 11 towards below vertical posture carry out the lathe of cutter changing.In this lathe, cutter 2 keeps barrel surface 38 or keeps the cylinder concave surface 48 of taper seat 22 and knife rest or the knife rest 4 that circular cone concave surface 42 chimeric states remain in tool magazine to make it by deadweight, therefore, even the cutter shaft that keeps barrel surface 38 or keep taper seat 22 and cylinder concave surface 48 or circular cone concave surface 42 to chimeric length shorter, also cutter 2 can be handover to knife rest 4 with vertical posture accurately from cutter shaft 1.Therefore, because cutter 2 is retained to knife rest 4 with posture accurately, therefore, when next this cutter being mounted to cutter shaft 1, this cutter is installed on cutter shaft 1 exactly.

The cutter changing set positions of ATC of the present utility model is: the axle center of the knife rest of the cutter that the axle center of this cutter shaft and maintenance are replaced in the moving area of cutter shaft 1 is consistent location exactly.This cutter changing position can be set in the interior a plurality of positions of moving area of cutter shaft.When tool magazine is provided with a large amount of knife rest 4, the same with in the past ATC, reciprocating moving device, slewing equipment that knife rest is kept out of the way from the cutter changing position are set get final product.Cutter shaft is carried out downwards in the lathe of cutter changing along vertical direction, and the posture ground that preferably keeps the vertical direction of knife rest to make progress moves back and forth or turns round mobile structure.

Because ATC of the present utility model directly joins cutter between the cutter shaft 1 of the knife rest 4 of tool magazine and lathe, therefore, can avoid because complicated, and the generation of the shaft core position error that takes place with changing device handing-over more time of the caused equipment of changing device more are set, therefore, has effect as follows: the structure of ATC and the replacing action of cutter are oversimplified, the cutter of being changed automatically can be installed on exactly the cutter shaft of lathe again.

Cutter of the present utility model is by in the maintenance barrel surface 38 of cutter setting or keep taper seat 22 and cylinder concave surface 48 or circular cone concave surface 42 chimeric being maintained in the tool magazine in the knife rest setting of tool magazine.Between shank 21 and blade 3, be provided with and keep barrel surface 38 or keep the cutter of taper seat 22 to use position to keep than shank 21 more close blades 3, therefore, with taper shank is chimeric with the tool rest of tool magazine and keep the structure in the past of cutter to compare, near the degree of blade 3 position of blade 3 being under the state of more accurate location, cutter is remained in tool magazine with fitting portion.And this cutter is not directly mounted to cutter shaft via changing device, therefore, can cutter be installed on cutter shaft with higher precision.

When the circular cone concave surface 42 of the maintenance taper seat 22 of cutter and knife rest is chimeric, cutter 2 can be remained in the knife rest 4 of tool magazine with the posture of the deviation in no axle center and inclination, and, can between cutter shaft 1 and knife rest 4, directly not join cutter via changing device.Therefore, can between cutter shaft 1 and knife rest 4, join cutter 2 accurately, therefore, have the deviation in the axle center that can make the cutter 2 that is installed on cutter shaft 1 and the effect that tilts and install for minimal, high-precision cutter.This effect has the cutter of staight shank of high aligning effect to the joint portion that is difficult to cutter shaft 1 and cutter 2 are combined especially effective.

Description of drawings

Fig. 1 is the side view of the 1st embodiment of cutter of the present utility model.

Fig. 2 is the sectional view of the knife rest that keeps of the cutter to Fig. 1.

Fig. 3 is the partial side view of the 1st embodiment of ATC of the present utility model.

Fig. 4 is the side view of the 2nd embodiment of cutter of the present utility model.

Fig. 5 is the sectional view of the knife rest that keeps of the cutter to Fig. 4.

Fig. 6 is the sectional view of the 3rd embodiment of the knife rest of cutter of the present utility model and ATC.

Fig. 7 is the sectional view of the 4th embodiment of the knife rest of cutter of the present utility model and ATC.

Fig. 8 be illustrate in the past cutter and the side view of the example of ATC.

Label declaration

1 cutter shaft

The cutter of 2(a～d)

3 blades

3a emery wheel (whetslate)

3b cutter head (chip)

4 knife rests

5 tool magazines

6 crimps

The 6a bulb stopper

The 6b briquetting

11 cutter installation ends

21 shanks

The 21a staight shank

The 21b taper shank

22 taper seats (maintenance taper seat)

23 application of force taper seats

25 main bodys (body)

28 flanges

30 stage portion

38 barrel surface (maintenance barrel surface)

42 circular cone concave surfaces

45 openings

48 cylinder concave surfaces

61 springs

62 balls

65 helical springs

66 fulcrums

67 pressure connection terminals

The specific embodiment

Below, with reference to accompanying drawing, cutter of the present utility model and ATC are further described.Fig. 1 is the figure that an example of cutter of the present utility model is shown, and is the figure of example of emery wheel that glass plate is carried out the processing of perforate and inner peripheral is shown.

For emery wheel 3a shown in Figure 1, basic configuration is thin cylindrical shape, its terminal surface 31 forms glass plate to the grinding face of grinding wheel spindle to incision, be provided with diametric groove 32 at this terminal surface, this groove 32 is used to prevent that the central part of not bringing into play ablation from contacting with glass plate, and is used to make the working fluid circulation.The terminal part peripheral shape of emery wheel 3a becomes the little taper seat of end side diameter 33, and possesses barrel surface 34 and the cydariform portion 35 continuous with this taper seat 33.The

taper seat

36,37 of cydariform portion 35 both sides forms, with the table back of the body edge tilt of the side face in the hole that drilled through cut the grinding face that falls, be used to carry out so-called chamfering.

Be integrally formed with grinding wheel spindle 26 on the emery wheel 3a, the end side of grinding wheel spindle 26 forms staight shank 21a.At the shank 21a of grinding wheel spindle 26 with become between the emery wheel 3a of blade, being formed with the shank side is the maintenance taper seat 22 of path for big footpath emery wheel side.And, with the miner diameter end of this maintenance taper seat 22 form in abutting connection with ground reverse, be that shank 21a side is path and the emery wheel 3a side application of force taper seat 23 for big footpath.Application of force taper seat 23 is littler than maintenance taper seat 22 diameters, and the connecting portion between the miner diameter end of miner diameter end that keeps taper seat 22 and application of force taper seat 23 is formed with maintenance taper seat side and differs from 27 for big ladder directly.In addition, be formed with the guiding taper seat that emery wheel 3a side is a path (said the 3rd taper seat in the utility model right claim) 24 with the bigger diameter end of application of force taper seat 23 with being connected.

Fig. 2 is the sectional view that keeps the knife rest 4 of this cutter 2a.Knife rest 4 possesses the circular cone concave surface 42 chimeric with the maintenance taper seat 22 of cutter 2a in its axle center, utilize bolt 52 with the knife rest 4 of predetermined number so that the vertical posture of this circular cone concave surface 42 towards the top is installed on the workbench 51 of tool magazine.Knife rest 4 possesses the opening 45 that the miner diameter end with circular cone concave surface 42 connects continuously, and this opening is the size that emery wheel 3a, guiding taper seat 24 and the application of force taper seat 23 of cutter 2a can pass through.In addition, knife rest 4 possesses bulb stopper 6a, and this bulb stopper 6a possesses ball 62, is keeping taper seat 22 to be embedded under the state of circular cone concave surface 42, and in the position corresponding with the application of force taper seat 23 of the cutter that is kept by knife rest 4, this ball 62 is crimped on application of force taper seat 23 by spring 61.This bulb stopper 6a is provided with 3 around the axis of knife rest 4 with 120 angles of spending.

The rotary cutter axle 1 of lathe at least when changing cutter towards vertical direction, and its cutter installation end 11 is down.In cutter shaft 1, be built-in with split chuck and opening and closing device thereof that the shank 21 of cutter is controlled.

Towards the mode of the knife rest 4 of the sky that is positioned in the cutter changing position cutter shaft 1 is entered with the cutter 2a that is installed on cutter shaft 1 vertically, keep taper seat 22 be about to 42 collisions of circular cone concave surface before turnover (Jin go out) the end place stops, and open split chuck, thus cutter 2a is handover to knife rest 4.

At this moment, the emery wheel 3a of cutter is by opening 45, and bulb stopper 6a is opposed at the position and the application of force taper seat 23 that are directed to that taper seat 24 is pressed into and its bigger diameter end has passed through.The cutter 2a that discharges from cutter shaft 1 pushes application of force taper seat 23 and under the effect that is fixed to that produces at bulb stopper 6a, remains in knife rest 4 to keep taper seat 22 and circular cone concave surface 42 chimeric states.Under this hold mode, by means of each other chimeric of circular cone that keeps between taper seat 22 and the circular cone concave surface 42, the axle center of knife rest 4 and the axle center that remains in the cutter 2a of knife rest 4 are maintained at the state of zero deflection and inclination.

Next, the knife rest that maintains the cutter that will change is positioned at the cutter changing position, cutter shaft 1 is entered vertically, run through under the state that is inserted in cutter shaft at the shank 21a of cutter and to close split chuck, cutter shaft 1 is risen, thus, cutter 2a is handover to cutter shaft 1.At this moment, by behind its bigger diameter end, bulb stopper 6a is directed to taper seat 24 guiding and resets to the turnover position bulb stopper 6a being pressed into by application of force taper seat 23.The emery wheel 3a of cutter is by opening 45 and rising.

Fig. 4 and Fig. 5 are the figure that the variation of above-mentioned the 1st embodiment is shown, and Fig. 4 is the figure that cutter 2c is shown, and Fig. 5 is the figure that the knife rest 4 that the cutter to Fig. 4 keeps is shown.Among the 2nd embodiment, replace the maintenance taper seat 22 of the 1st embodiment and be provided with and keep barrel surface 38, and replace circular cone concave surface 42 and be provided with the cylinder concave surface 48 chimeric with keeping barrel surface 38.Cylinder concave surface 48 possesses with the ladder of cutter side and differs from 27 root edges that engage 49, by means of the crimp force of bulb stopper 6a, with the maintenance barrel surface 38 of cutter 2c ladder differ from 27 and the state of root edge 49 butts under chimeric and remain in the cylinder concave surface 48 of knife rest 4.

The chuck of controlling the cutter shaft of shank 21a possesses the function that the axle deviation of a little of the shank that is inserted is revised and controlled usually, process maintenance barrel surface 38 and cylinder concave surface 48 well by precision, make in the scope of the poor axle deviation in its permission in the footpath that keeps barrel surface 38 and cylinder concave surface 48, thus, can utilize maintenance barrel surface 38 and the chimeric of cylinder concave surface 48 that cutter 2c is remained on the knife rest 4 with enough practical precision.

Fig. 6 is the figure of the 3rd embodiment that the knife rest of cutter of the present utility model and ATC is shown, and is the example that the utility model is applied to cutter 2b, and this cutter 2b possesses: taper shank 21b; The flange 28 that pawl is controlled cutter of controlling with the more changing device that is used to utilize structure in the past.The cutter 2b of the 3rd embodiment possesses: the taper shank 21b chimeric with the taper hole of cutter shaft; With the hook portion (Off Star Network) 29 of fastening pull bar, this pull bar is used to mention the cutter that will install and makes the taper hole of taper shank 21b and cutter shaft chimeric securely.In addition, cutter 2b possesses the flange 28 by the finger maintenance of the more changing device of handing-over cutter between cutter shaft and tool magazine, so that also can utilize the ATC of structure in the past.Label 3b is the cutter head as blade, and label 25 is the fixing main body of cutter head 3b.The maintenance taper seat 22 that shank 21b side is a path for big directly cutter head 3b side is located between flange 28 and the main body 25.

The knife rest of installing on the rotary table 51 of tool magazine 4 possesses the circular cone concave surface 42 chimeric with the maintenance taper seat 22 of cutter, in the path side of circular cone concave surface 42, connects and is formed with the opening 45 that cutter head 3b and main body 25 can be passed through.Knife rest 4 is provided with briquetting 6b, and this briquetting 6b is by 66 supportings of fulcrum that intersect with the axle center of circular cone concave surface 42, and by 65 pairs of pressure connection terminals 67 of helical spring towards the circular cone concave surface 42 side application of forces.This briquetting 6b possesses the bar 68 that extends towards a side opposite with pressure connection terminal from fulcrum 66, in the cutter changing position, when passing through not shown actuator (cylinder etc.) pressure rod 68, pressure connection terminal 67 rotates towards the top, has avoided flange 28 and briquetting 6b interference with respect to the cutter of knife rest 4 plugs.

When between cutter shaft 1 and knife rest 4, joining cutter 2b, be the pressure connection terminal 67 of briquetting 6b towards above carry out under the state that rotated, after changing release, described actuator is kept out of the way, the pressure connection terminal 67 of briquetting 6b is by the active force of helical spring 65, the upper surface 30 of the flange 28 of the cutter that will be kept by knife rest 4 is pressed to 42 thrusters of circular cone concave surface, prevents that cutter 2b from coming off from knife rest 4.Under the state that knife rest 4 is kept out of the way from the cutter changing position, briquetting 6b is by the active force of helical spring 65, all the time so that the maintenance taper seat 22 of the cutter that kept is kept cutter towards the state of circular cone concave surface 42 application of forces of knife rest.Thus, the deviation and the inclination in the axle center of cutter 2b and knife rest 4 can be prevented, and the deviation and the inclination in the axle center of cutter shaft 1 in the time will being installed on cutter shaft 1 once more and cutter 2b can be prevented by the cutter that knife rest 4 keeps.

Fig. 7 is the figure that the 4th embodiment of the present utility model is shown, and is to illustrate because the diameter of blade (emery wheel) 3a of cutter 2d is big thereby the figure of the example of cylinder concave surface that emery wheel 3a can pass through or circular cone concave surface can't be set on knife rest 4.In this example, the structure of knife rest 4 is the structure as illustrated in fig. 2, and maintenance taper seat 22 that circular cone concave surface cutter 2d and this knife rest 4 42 is chimeric and application of force taper seat 23 and guiding taper seat 24 are arranged on the side opposite with shank 21a of emery wheel 3a.Keep the shape and effect as the 1st embodiment explanation of taper seat 22, application of force taper seat 23 and guiding taper seat 24, cutter 2d is remained in retainer 4 by bulb stopper 6a towards the state of circular cone concave surface 42 application of forces of knife rest with maintenance taper seat 22.

Claims

1. cutter, it possesses the shank of being controlled by the rotary cutter axle, it is characterized in that,

This cutter possesses barrel surface between shank and blade, this barrel surface is chimeric with the cylinder concave surface that is provided with at the knife rest of tool magazine, and this cutter remains in this knife rest.

2. cutter, it possesses the shank of being controlled by the rotary cutter axle, it is characterized in that,

This cutter possesses between shank and blade: barrel surface; With the blade side adjacency of this barrel surface, than this taper seat that barrel surface diameter is little and blade side diameter is big; And at the blade side of this taper seat mode the 2nd taper seat that be provided with, that blade side diameter is little with the bigger diameter end adjacency of bigger diameter end and this taper seat.

3. automatic tool changing device more is characterized in that,

This automatic tool more changing device possesses a plurality of knife rests at tool magazine, and each knife rest possesses: the cylinder concave surface chimeric with the barrel surface of the described cutter of claim 2; Be positioned at the depth side of this cylinder concave surface and the opening that can pass through by the part of blade side than described the 1st taper seat; And the 1st taper seat butt of terminal and the cutter that kept and to the crimp of this cutter towards its blade side application of force,

Under the consistent state that is positioned on the same axis in axle center of 1 knife rest in the axle center of the cutter shaft that makes lathe and a plurality of knife rests, utilize the advance and retreat action of cutter shaft, between tool magazine and lathe, carry out the handing-over of cutter towards described 1 knife rest.

4. automatic tool changing device more is characterized in that,

This automatic tool more changing device possesses a plurality of knife rests at tool magazine, and each knife rest possesses: the cylinder concave surface chimeric with the barrel surface of each described cutter in the claim 1～2; And to the cutter that the kept crimping unit towards its blade side application of force,

The axle center of 1 knife rest in the axle center of the cutter shaft that makes lathe and a plurality of knife rests is consistent to be positioned under the state on the same axis of vertical direction, utilizes the advance and retreat action of cutter shaft towards described 1 knife rest, carries out the handing-over of cutter between tool magazine and lathe.