CN104097097B

CN104097097B - Chain tool barrel

Info

Publication number: CN104097097B
Application number: CN201410079599.2A
Authority: CN
Inventors: 小山智之
Original assignee: Tsubakimoto Chain Co
Current assignee: Tsubakimoto Chain Co
Priority date: 2013-04-10
Filing date: 2014-03-05
Publication date: 2017-01-04
Anticipated expiration: 2034-03-05
Also published as: DE102014103663A1; JP2014205203A; TW201438831A; CN104097097A; TWI605891B; JP5828859B2

Abstract

A kind of chain tool barrel, need not dismantle hollow bearing pin from inner panel and outside plate, just can the instrument of corresponding different size, compared with the structure changing a whole set of tool barrel, it is possible to reduce parts count required during the instrument being replaced by different size.In chain tool barrel, instrument holding unit loads and unloads relative to hollow bearing pin freely, and there is multiple types of tools holding unit corresponding to the different size of instrument, the external diameter of instrument holding unit keeps unified between the instrument holding unit corresponding with the different size of instrument, and the position that hold assembly is in the axial direction of instrument holding unit according to the different every kind of specification of instrument and different, instrument holding unit side predetermined portion is made to be directed at hollow bearing pin side predetermined portion, thus the assigned position that instrument holding unit is installed in hollow bearing pin.

Description

Chain tool barrel

Technical field

The present invention relates to a kind of chain (chain) and use tool barrel (pot), it is used for machining center (machining Etc. center) automatic tool change device being equipped with in lathe.

Background technology

Previously, it is known to a kind of chain tool barrel, it possessed instrument holding unit (unit), and this instrument holding unit is Detachably keeping instrument in the inside of cylindric hollow bearing pin (hollow pin), the hollow bearing pin of described cylindrical shape is handed over For linking a pair inner panel (plate) and a pair outside plate (referring for example to patent documentation 1).

As this kind of existing chain tool barrel, such as just like the chain tool barrel shown in Fig. 6 (A) to Fig. 6 (C) 700A～700C.

Herein, Fig. 6 (A) is the chain tool barrel 700A of the prior art representing the instrument TA freely keeping MAS specification Section plan, Fig. 6 (B) is the chain tool barrel 700B of prior art representing the instrument TB freely keeping CAT specification Section plan, Fig. 6 (C) is the chain tool barrel 700C of prior art representing the instrument TC freely keeping DIN specification Section plan.

It addition, in this specification, the last of composed component if necessary in the device of MAS specification marks " A ", on CAT rule The last mark " B " of the composed component of the device of lattice, carry out the last mark " C " of the composed component of the device of DIN specification Explanation.

Existing chain tool barrel 700A～700C possesses instrument holding unit 720A～720C, this instrument holding unit 720A～720C is detachably to keep instrument TA～TC, described circle in the inside of Yuan Tongzhuan hollow bearing pin 710A～710C Hollow bearing pin 710A～710C of tubular alternately links a pair inner panel C1 and a pair outside plate C2.

Inner panel C1 and outside plate C2 is installed in the periphery of hollow bearing pin 710A～710C, and utilizes retainer ring (ring) 750 Fixed in order to avoid coming off.

Herein, the instrument TC of instrument TB, DIN specification of instrument TA, CAT specification of MAS specification is shown in Fig. 5 (A) to Fig. 5 (C) for reference.

The instrument TC of instrument TB, DIN specification of instrument TA, CAT specification of MAS specification comprises blind rivet (pull respectively Stud) portion PA～PC and handle (shank) portion SA～SC.

Further, instrument TA～TC is different according to size, the shape of every kind of specification.

Chain tool barrel 700A～700C is different hollow bearing pin 710A's～710C of the size according to every kind of specification Inside, possesses instrument holding unit 720A～720C that size and shape is different according to every kind of specification, each instrument holding unit 720A～720C has steel ball 722 and disc spring (coil spring) 723 in through hole 721.

Steel ball 722 by the biasing force (power of energizing) of disc spring 723 by the diameter towards hollow bearing pin 710A～710C Central side bias (energizing), thus steel ball 722 clamping device TA～TC.

Further, from the end of hollow bearing pin 710A～710C distance PA to the center of steel ball 722～PC according to every Kind of specification and different.

But, above-mentioned existing chain tool barrel 700A～700C use instrument holding unit 720A～720C with Hollow bearing pin 710A～710C utilizes the relatively-stationary structure of spring catch (spring pin) 760, therefore there is following maintenance (maintenance) problem on: instrument holding unit 720A～720C to be changed, hollow bearing pin 710A to be changed～ 710C also disassembles chain, instrument TA～TC of the corresponding different size of ability；It is replaced by during the instrument TA～TC of different size required Parts count many；Or, when instrument holding unit 720A～720C occurs damaged, it is necessary to change a whole set of tool barrel.

Prior art literature

Patent documentation

Patent documentation 1: Japanese Patent Laid-Open 2008-36780 publication

Summary of the invention

(inventing problem to be solved)

The present invention solves foregoing problem of the prior art, i.e. it is an object of the invention to provide a kind of chain and uses Tool barrel, need not from the inner panel of chain and outside plate dismantle hollow bearing pin and disassemble chain just can the instrument of corresponding different size, with The structure changing a whole set of tool barrel is compared, and can reduce parts count required during the instrument being replaced by different size, it is thus possible to Maintenance during maintenance etc. is carried out with necessary bottom line.

(solving the means of problem)

The invention of the technical program 1 solves aforementioned problems by following structure, i.e. a kind of chain tool barrel, possesses Instrument holding unit, described instrument holding unit is detachably to keep instrument, institute in the inside of Yuan Tongzhuan hollow bearing pin The hollow bearing pin stating cylindrical shape alternately links a pair inner panel and a pair outside plate, and wherein, described instrument holding unit is relative to described Hollow bearing pin and load and unload freely, and possess the hold assembly clamping described instrument diametrically, and, corresponding to described instrument Different size and there is multiple described instrument holding unit, the external diameter of described instrument holding unit is on the different rule from described instrument Keep unified between the instrument holding unit that lattice are corresponding, and the position that hold assembly is in the axial direction of described instrument holding unit according to Every kind of specification that described instrument is different and different, make the instrument holding unit side predetermined portion of described instrument holding unit periphery with The hollow bearing pin side predetermined portion alignment of described hollow bearing pin inner circumferential, thus described instrument holding unit is installed on described hollow Assigned position in bearing pin.

The invention of the technical program 2 is in addition to the structure of the chain tool barrel described in technical scheme 1, the most logical Cross following structure to solve aforementioned problems, i.e. make described instrument holding unit side predetermined portion and hollow bearing pin side specified part Under the state of bit alignment, utilize the screw inserted from the outer circumferential side of this hollow bearing pin to the described instrument holding unit that locks with hollow Bearing pin.

The invention of the technical program 3 is in addition to the structure of the chain tool barrel described in technical scheme 2, the most logical Cross following structure to solve aforementioned problems, i.e. described screw is countersunk head screw, the screw inserting hole on described hollow bearing pin straight Footpath becomes big along with the outer circumferential side towards described hollow bearing pin.

The invention of the technical program 4 is except the chain tool barrel according to any one of technical scheme 1 to technical scheme 3 Beyond structure, solve aforementioned problems by following structure the most further, i.e. described instrument holding unit possesses lock-out state and cuts Changing bar, described lock-out state changer lever can switch and locks the hold mode of described hold assembly freely and release lock Fixed, from the overhang of the protuberance of the prominent lock-out state changer lever of described instrument holding unit according to different every of described instrument Kind of specification and different, and the overhang that highlights from hollow bearing pin of the protuberance of described lock-out state changer lever with described instrument Instrument holding unit corresponding to different size between keep unified.

(invention effect)

The chain tool barrel of the present invention possesses instrument holding unit, and described instrument holding unit is cylindric hollow The inside of bearing pin detachably keeps instrument, and the hollow bearing pin of described cylindrical shape alternately links a pair inner panel and a pair outside plate, Thus, in the automatic tool change device being equipped with in the lathe such as the work in-process heart, work can not only be changed by chain drive The position of tool holding unit is to provide the instrument of required form, but also can play peculiar effect as described below.

The chain tool barrel of the invention according to the technical program 1, instrument holding unit loads and unloads relative to hollow bearing pin Freely, and possess the hold assembly of clamping device diametrically, and, there is multiple types of tools corresponding to the different size of instrument Holding unit, the external diameter of instrument holding unit keeps unified between the instrument holding unit corresponding with the different size of instrument, and Hold assembly position in the axial direction of instrument holding unit is different according to the different every kind of specification of instrument, makes instrument keep single The instrument holding unit side predetermined portion of unit periphery is directed at the hollow bearing pin side predetermined portion of hollow bearing pin inner circumferential, thus by work The assigned position that tool holding unit is installed in hollow bearing pin, thus, when using the instrument with different size before changing, as long as From the inner side of hollow bearing pin dismounting instrument holding unit before changing, and will keep with the corresponding instrument of other specifications after change Unit is installed to the inner side of hollow bearing pin, a whole set of tool barrel that need not change also including hollow bearing pin, therefore without Must from the inner panel of chain and outside plate dismantle hollow bearing pin and disassemble chain just can the instrument of corresponding different size.

That is, between the instrument holding unit corresponding with the different size of instrument, there is interchangeability, therefore, it is possible to corresponding different The instrument of specification.

And then, only change instrument holding unit owing to being changed without hollow bearing pin, therefore with a whole set of tool barrel of replacing Structure is compared, it is possible to reduce parts count required during the instrument being replaced by different size.

During further it is assumed that instrument holding unit there occurs breakage, as long as a whole set of tool barrel need not be changed and only changes work Tool holding unit, therefore, it is possible to carry out maintenance during maintenance etc. with the bottom line of necessity.

That is, do not result in the waste of material resources, be therefore also beneficial to earth environment.

And then, owing to not changing the outside dimension of tool barrel and parts count does not increases, therefore, it is possible to prevent automated tool The maximization of more changing device.

The chain tool barrel of the invention according to the technical program 2, the effect risen except the invention of technical scheme 1 with Outward, when making instrument holding unit side predetermined portion be directed at hollow bearing pin side predetermined portion, utilize from this hollow pins The screw that the outer circumferential side of axle is inserted comes locking tool holding unit and hollow bearing pin, and thus, as long as pulling down screw, instrument keeps single Unit just can move freely relative to hollow bearing pin, therefore, it is possible to the most only change instrument holding unit.

The chain tool barrel of the invention according to the technical program 3, the effect risen except the invention of technical scheme 2 with Outward, screw is countersunk head screw, and the diameter of the screw inserting hole on hollow bearing pin becomes along with the outer circumferential side towards this hollow bearing pin Greatly, thus, the entrance of screw inserting hole becomes cone (taper) the shape shape processed through so-called counterbore, countersunk head screw Head will not highlight from the outer peripheral face of hollow bearing pin and flush with the outer peripheral face of hollow bearing pin, therefore, it is possible to prevent the head of countersunk head screw Hook other objects.

The chain tool barrel of the invention according to the technical program 4, any one of technical scheme 1 to technical scheme 3 The effect that risen of invention beyond, instrument holding unit possesses lock-out state changer lever, this lock-out state changer lever can switch from As the hold mode of hold assembly is locked and unlocks, from the lock-out state changer lever that instrument holding unit is prominent Protuberance overhang according to the different every kind of specification of instrument and different, and the protuberance of lock-out state changer lever is from hollow The overhang that bearing pin highlights keeps unified, thus, no matter by which between the instrument holding unit corresponding with the different size of instrument The instrument holding unit planting specification is installed in hollow bearing pin, and lock-out state changer lever is homogeneous from the overhang that hollow bearing pin is prominent With, the most no matter the instrument holding unit of which kind of specification is installed in hollow bearing pin, can similarly carry out hold assembly The locking of hold mode and the switching of latch-release.

Accompanying drawing explanation

Fig. 1 is the embodiments of the invention i.e. approximate three-dimensional map of chain tool barrel.

Fig. 2 is the embodiments of the invention i.e. sectional plan view of chain tool barrel.

Fig. 3 (A) is the side view observed from the symbol 3A shown in Fig. 2, and Fig. 3 (B) is to observe from the symbol 3B shown in Fig. 2 Side view.

Sectional plain-view drawing when Fig. 4 (A) is to be provided with the instrument holding unit corresponding with the instrument of MAS specification, Fig. 4 (B) Sectional plain-view drawing when being to be provided with the instrument holding unit corresponding with the instrument of CAT specification, Fig. 4 (C) is to be provided with to advise with DIN Sectional plain-view drawing during instrument holding unit corresponding to the instrument of lattice.

Fig. 5 (A) is the sectional plan view of the instrument representing MAS specification, and Fig. 5 (B) is the instrument representing CAT specification Sectional plan view, Fig. 5 (C) is the sectional plan view of the instrument representing DIN specification.

Fig. 6 (A) is the plan cross-section of the chain tool barrel of the prior art representing the instrument freely keeping MAS specification Figure, Fig. 6 (B) is the section plan of the chain tool barrel of the prior art representing the instrument freely keeping CAT specification, Fig. 6 (C) it is the section plan representing the chain tool barrel of the prior art of the instrument of holding DIN specification freely.

Reference:

100,700,700A, 700B, 700C: chain tool barrel

110,710,710A, 710B, 710C: hollow bearing pin

111: screw inserting hole

112: inner circumferential order difference part

113: periphery order difference part

114: retainer ring groove portion

120,120A, 120B, 120C, 720,720A, 720B, 720C: instrument holding unit

121,721: through hole

122,722: steel ball (hold assembly)

123,723:(the 1st) disc spring (hold assembly)

124: hole portion

125: lock-out state changer lever

125a: bar protuberance

125b: large-diameter portion

125c: minor diameter part

126: the 2 disc springs

127: sleeve-shaped cover

128:(instrument holding unit) end

130: countersunk head screw

140: conical sleeve

150,750: retainer ring

760: spring catch

C: chain

C1: inner panel

C1a: insert hole

C2: outside plate

C2a: insert hole

L, LA～LC:(instrument holding unit) external diameter

M, MA～MC:(instrument holding unit) internal diameter

N:(screw inserting hole) diameter

P, PA～PC: the distance till the center from hollow bearing pin end to steel ball/blind rivet portion

S, SA～SC: shank

T, TA～TC: instrument

Detailed description of the invention

The present invention is a kind of chain tool barrel, possesses instrument holding unit, and described instrument holding unit is in cylindrical shape The inside of hollow bearing pin detachably keep instrument, the hollow bearing pin of described cylindrical shape alternately links a pair inner panel and a pair Outside plate, wherein, instrument holding unit loads and unloads freely relative to hollow bearing pin, and possesses the clamping part of clamping device diametrically Part, and, there is multiple types of tools holding unit corresponding to the different size of instrument, the external diameter of instrument holding unit with instrument Instrument holding unit corresponding to different size between keep unified, and the position that hold assembly is in the axial direction of instrument holding unit The every kind specification different according to instrument and different, make the instrument holding unit side predetermined portion of instrument holding unit periphery with hollow The hollow bearing pin side predetermined portion alignment of bearing pin inner circumferential, thus the predetermined bits that instrument holding unit is installed in hollow bearing pin Put, thus, need not from the inner panel of chain and outside plate dismantle hollow bearing pin and disassemble chain just can the instrument of corresponding different size, enter And, compared with the structure changing a whole set of tool barrel, parts count required during the instrument being replaced by different size can be reduced, from And maintenance during maintenance etc. can be carried out with necessary bottom line, as long as the present invention is device as above, then it is concrete In any case embodiment all may be used.

Such as, hold assembly both can be make ball (ball) press, abut to instrument shank with keep instrument parts, And can also be that the periphery in the blind rivet portion making gripping claw or ball press, abut the shank forward end to instrument is to keep the portion of instrument Part.

And then, as long as being provided with locking mechanism, then for appoint whichever all can, described locking mechanism guarantor to hold assembly freely The state of holding locks and unlocks.

Embodiment

Hereinafter, referring to figs. 1 through Fig. 5 (C), Fig. 5 (B), Fig. 5 (C), embodiments of the invention i.e. chain tool barrel is described 100。

Embodiments of the invention i.e. chain with tool barrel 100, possesses instrument and keeps as shown in Fig. 1 to Fig. 3 (A), Fig. 3 (B) Unit 120, this instrument holding unit 120 is detachably to keep instrument T, institute in the inside of Yuan Tongzhuan hollow bearing pin 110 The hollow bearing pin 110 stating cylindrical shape alternately links a pair inner panel C1 and a pair outside plate C2.

Specifically, chain C has: a pair inner panel C1, along separating relative to the left and right width in chain length direction Configuration；A pair outside plate C2, is arranged in outside the left and right of this pair inner panel C1；And hollow bearing pin 110.

The both sides of hollow bearing pin 110 are inserted through the insertion hole C2a of the insertion hole C1a and outside plate C2 of inner panel C1, and fixing Ring groove portion 114 is provided with retainer ring 150.

Inner panel C1 and outside plate C2 is positioned in the periphery order difference part 113 of hollow bearing pin 110 with solid on the width of left and right Determine between ring 150, and at least one is rotatably installed relative to hollow bearing pin 110.

And then, instrument holding unit 120 possesses the hold assembly of clamping device T diametrically.

As an example, hold assembly comprises steel ball the 122 and the 1st disc spring 123.

Steel ball the 122 and the 1st disc spring 123 is disposed in the inside of the through hole 121 of instrument holding unit 120, and steel ball 122 passes through 1st disc spring 123 is biased (energizing) by the central side of the radial direction towards instrument holding unit 120.

Herein, the diameter of through hole 121 is set to be less than steel at the center side end portion of the radial direction of instrument holding unit 120 The diameter of ball 122.

And, at the outer circumferential side of instrument holding unit 120, it is equipped with sleeve (sleeve) the shape cover of drum (cover) 127, by covering through hole 121, thus avoid the 1st disc spring 123 to fly out from through hole 121.

When instrument T enters chain with tool barrel 100, the large diameter portion of the front in blind rivet portion P (PA～PC) of instrument T The biasing force (power of energizing) of the 1st disc spring 123 is overcome to make steel ball 122 move.

Further, when blind rivet portion P (PA～PC) large diameter portion by and minor diameter part split-phase to time, by the 1st disc spring 123 Biasing force (power of energizing), steel ball 122 moves towards the central side of the radial direction of instrument holding unit 120, with clamp blind rivet portion P (PA～ PC) path part.

On the other hand, when taking out instrument T from chain tool barrel 100, the front end in blind rivet portion P (PA～PC) of instrument T The large diameter portion of side overcomes the biasing force (power of energizing) of the 1st disc spring 123 to make steel ball 122 move.

Further, when the large diameter portion of the front in blind rivet portion P (PA～PC) is passed through, instrument holding unit 120 clamps work The clamp position of tool T is released.

It addition, in the present embodiment, be equipped with 4 steel balls 122, as long as but steel ball 122 is more than 3.

And then, it is being contrary side with the side being equipped with instrument holding unit 120 within hollow bearing pin 110, is joining It is provided with the conical sleeve (taper sleeve) 140 that the shank S (SA～SC) with instrument T contacts.

And, instrument holding unit 120 loads and unloads freely relative to hollow bearing pin 110.

And then, as shown in Fig. 4 (A) to Fig. 4 (C), instrument holding unit 120A～120C is corresponding to instrument TA～TC not Same specification and exist multiple.

Such as, as reference, there is the instrument of CAT (ANSI) specification of instrument TA, Fig. 5 (B) of the MAS specification of Fig. 5 (A) The instrument TC these three of the DIN specification of TB, Fig. 5 (C).

It addition, in the present embodiment, the last of composed component if necessary in the device of MAS specification marks " A ", at CAT (ANSI) composed component of the device of specification last mark " B ", at the last mark of composed component of device of DIN specification " C " illustrates.

In the present embodiment, corresponding instrument TA～TC these three specification, there is the instrument corresponding with MAS specification of Fig. 4 (A) to keep Instrument holding unit 120B and Fig. 4 (C) corresponding with CAT (ANSI) specification of unit 120A, Fig. 4 (B) with DIN specification pair The instrument holding unit 120C these three answered.

Further, external diameter LA～LC of instrument holding unit 120A～120C is corresponding with the different size of instrument TA～TC Keep unified between instrument holding unit 120A～120C.

On the other hand, as an example, internal diameter MA～MC of instrument holding unit 120A～120C is with instrument TA's～TC Difference between instrument holding unit 120A～120C that different size is corresponding.

And then, the hold assembly i.e. steel ball 122 position in the axial direction of instrument holding unit 120A～120C, according to instrument Every kind of different for TA～TC specifications and different.

And, make the instrument holding unit side predetermined portion of instrument holding unit 120A～120C periphery i.e. end 128 with The hollow bearing pin side predetermined portion i.e. inner circumferential order difference part 112 of hollow bearing pin 110 inner circumferential is directed at, thus by instrument holding unit 120A ～120C is installed on the assigned position in hollow bearing pin 110.

Thus, as shown in Fig. 4 (A) to Fig. 4 (C), from the end of hollow bearing pin 110A～110C to the center of steel ball 122 it is Distance PA only～PC are as existing structure, different according to every kind of specification.

As premise, when using the such as instrument TB with different size before changing, as long as in hollow bearing pin 110 Side dismounting such as instrument holding unit 120A before changing, and will keep single with the corresponding such as instrument of other specifications after change Unit 120B is installed to the inner side of hollow bearing pin 110, need not change a whole set of instrument also including hollow bearing pin 110 Cylinder.

That is, between instrument holding unit 120A～120C corresponding with the different size of instrument TA～TC, there is interchangeability.

And then, it is changed without hollow bearing pin 110 and only changes instrument holding unit 120A～120C.

During further it is assumed that instrument holding unit 120A～120C there occurs breakage, a whole set of tool barrel need not be changed and only Only to change instrument holding unit 120A～120C.

That is, the waste of material resources is not resulted in.

And then, do not change the outside dimension of chain tool barrel 100 and parts count does not increases.

And then, in the present embodiment, make instrument holding unit side predetermined portion i.e. end 128 and hollow bearing pin side specified part Under the state of position i.e. inner circumferential order difference part 112 alignment, utilization is the most heavy from an example of the screw that the outer circumferential side of this hollow bearing pin 110 is inserted Head screw 130, comes locking tool holding unit 120A～120C and hollow bearing pin 110.

Thus, as long as pulling down countersunk head screw 130, instrument holding unit 120A～120C just can be relative to hollow bearing pin 110 And move freely.

And, the diameter N of the screw inserting hole 111 on hollow bearing pin 110 is along with the outer circumferential side towards this hollow bearing pin 110 And become big.

Thus, the entrance of screw inserting hole 111 becomes the tapered shape processed through so-called counterbore, countersunk head screw The head of 130 will not highlight from the outer peripheral face of hollow bearing pin 110 and flush with the outer peripheral face of hollow bearing pin 110.

And then, in the present embodiment, it is provided with locking mechanism, this locking mechanism switching hold mode to hold assembly freely Lock and unlock.

Specifically, in the hole portion 124 of instrument holding unit 120A～120C, it is equipped with lock-out state changer lever 125 And the 2nd disc spring 126.

Further, a part for lock-out state changer lever 125 i.e. bar protuberance 125a is from instrument holding unit 120A～120C Hole portion 124 highlight, and by the biasing force (power of energizing) of the 2nd disc spring 126, lock-out state changer lever 125 is by towards prominent Direction bias (energizing).

When being connected to bar protuberance 125a without any object, the large-diameter portion 125b of lock-out state changer lever 125 Contacting with 1 steel ball 122, this steel ball 122 is motionless.

That is, it is locked under the state kept by hold assembly.

On the other hand, the biasing force overcoming the 2nd disc spring 126 when not shown component is connected to bar protuberance 125a (is composed Ability) when being pressed into lock-out state changer lever 125, the large-diameter portion 125b of lock-out state changer lever 125 passes through through hole 121, lock Determine state cut for bar 125 minor diameter part 125c and through hole 121 in opposite directions.

Then, 1 steel ball 122 moves freely towards the outer circumferential side of instrument holding unit 120A～120C in through hole 121.

That is, locking is released from.

And, highlight from the protuberance i.e. bar of lock-out state changer lever 125 prominent for instrument holding unit 120A～120C The overhang of portion 125a is different according to every kind of different for instrument TA～TC specifications.

And then, the bar protuberance 125a of lock-out state changer lever 125 from the prominent overhang of hollow bearing pin 110, with work Keep unified between instrument holding unit 120A～120C corresponding to different size of tool TA～TC.

Thus, no matter instrument holding unit 120A～120C of which kind of specification is installed in hollow bearing pin 110, locks shape State changer lever 125 is the most identical from the overhang that hollow bearing pin 110 is prominent.

In the embodiments of the invention obtained in this way i.e. chain tool barrel 100, instrument holding unit 120A～ 120C loads and unloads freely relative to hollow bearing pin 110, and possess clamping device TA～TC diametrically as hold assembly Steel ball the 122 and the 1st disc spring 123, and, there is multiple types of tools holding unit corresponding to the different size of instrument TA～TC, work External diameter LA～LC of tool holding unit 120A～120C is at the instrument holding unit corresponding with the different size of instrument TA～TC Keep unified between 120A～120C, and steel ball the 122 and the 1st disc spring 123 is in the axial direction of instrument holding unit 120A～120C Position is different according to every kind of different for instrument TA～TC specifications, makes the instrument of instrument holding unit 120A～120C periphery keep Cell side predetermined portion i.e. end 128 is right with the hollow bearing pin side predetermined portion i.e. inner circumferential order difference part 112 of hollow bearing pin 110 inner circumferential Standard, thus instrument holding unit 120A～120C is installed on the assigned position in hollow bearing pin 110, thus, need not be from chain C Inner panel C1 and outside plate C2 dismounting hollow bearing pin 110 and disassemble chain C just can instrument TA～TC of corresponding different size, and more The structure changing a whole set of tool barrel is compared, it is possible to reduce parts count required during the instrument TA～TC being replaced by different size, Maintenance during maintenance etc. can be carried out, it is possible to prevent the maximization of automatic tool change device with necessary bottom line.

And then, make instrument holding unit side predetermined portion i.e. end 128 and hollow bearing pin side predetermined portion i.e. inner circumferential rank Under the state of difference portion 112 alignment, the screw i.e. countersunk head screw 130 utilizing the outer circumferential side from this hollow bearing pin 110 to insert, lock Instrument holding unit 120A～120C and hollow bearing pin 110, thereby, it is possible to the most only change instrument holding unit 120A～ 120C。

And, screw is countersunk head screw 130, and the diameter N of the screw inserting hole 111 on hollow bearing pin 110 is along with towards this The outer circumferential side of hollow bearing pin 110 and become big, thereby, it is possible to prevent the head of countersunk head screw 130 to be hooked to other objects.

And then, instrument holding unit 120A～120C possesses lock-out state changer lever 125, this lock-out state changer lever 125 The hold mode of hold assembly is locked and unlocks by switching freely, highlights from instrument holding unit 120A～120C The protuberance i.e. overhang of bar protuberance 125a of lock-out state changer lever 125 according to every kind of different for instrument TA～TC specifications And different, and, the bar protuberance 125a of lock-out state changer lever 125 from the prominent overhang of hollow bearing pin 110, with instrument Keeping unified between instrument holding unit 120A～120C that the different size of TA～TC is corresponding, thus, its effect is very big, such as without Instrument holding unit 120A～120C of which kind of specification is installed in hollow bearing pin 110 by opinion, can similarly carry out steel ball 122 And the 1st disc spring 123 to the locking of hold mode and the switching etc. that unlocks.

Claims

1. a chain tool barrel, possesses instrument holding unit, and described instrument holding unit is at cylindric hollow bearing pin Inside detachably keep instrument, the hollow bearing pin of described cylindrical shape alternately links a pair inner panel and a pair outside plate, described Chain tool barrel is characterised by,

Described instrument holding unit loads and unloads freely relative to described hollow bearing pin, and possesses and clamp described instrument diametrically Hold assembly, and, there is multiple described instrument holding unit corresponding to the different size of described instrument,

The external diameter of described instrument holding unit keeps unified between the instrument holding unit corresponding with the different size of described instrument, And the position that described hold assembly is in the axial direction of described instrument holding unit is according to the different every kind of specification of described instrument and not With,

Make the instrument holding unit side predetermined portion of described instrument holding unit periphery and the hollow of the inner circumferential of described hollow bearing pin Bearing pin side predetermined portion alignment, thus described instrument holding unit is installed on the assigned position in described hollow bearing pin,

Described instrument holding unit possesses lock-out state changer lever, and described lock-out state changer lever can switch freely to described folder The hold mode holding parts locks and unlocks, from the described lock-out state changer lever that described instrument holding unit is prominent Protuberance overhang according to the different every kind of specification of described instrument and different, and described lock-out state changer lever is prominent Portion keeps unified from the overhang that hollow bearing pin is prominent between the instrument holding unit corresponding with the different size of described instrument.

Chain tool barrel the most according to claim 1, it is characterised in that

When making described instrument holding unit side predetermined portion be directed at described hollow bearing pin side predetermined portion, utilize from The screw that the outer circumferential side of described hollow bearing pin is inserted is to described instrument holding unit and the described hollow bearing pin of locking.

Chain tool barrel the most according to claim 2, it is characterised in that

Described screw is countersunk head screw, and the diameter of the screw inserting hole on described hollow bearing pin is along with towards described hollow bearing pin Outer circumferential side and become big.