CN2920487Y - Main shaftdevice, tool keeper clamping unit used in the same device - Google Patents
Main shaftdevice, tool keeper clamping unit used in the same device Download PDFInfo
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- CN2920487Y CN2920487Y CN 200520105394 CN200520105394U CN2920487Y CN 2920487 Y CN2920487 Y CN 2920487Y CN 200520105394 CN200520105394 CN 200520105394 CN 200520105394 U CN200520105394 U CN 200520105394U CN 2920487 Y CN2920487 Y CN 2920487Y
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- main shaft
- tool holder
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- clamp mechanism
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Abstract
To provide a main spindle device of a machine tool capable of easily detaching a tool holder clamp unit with a clamp mechanism and an energizing mechanism from a front of the main spindle. A clamp mechanism 25 clamping a pull stud part 212 formed at a taper shank part 211 of a tool holder 21 is accommodated inside a unit body 23. A drawing bar 36 connected with a slider 26 for opening and closing a clamp member 27 of the clamp mechanism 25 projects outward from a rear end of the unit body 23. On an outer periphery of the drawing bar 36, a plate spring 43 is mounted between a spring receiving member 31 and a spring receiving member 41, so that the drawing bar 36 is always energized in a rear clamp direction. The tool holder clamp unit 22 with the energizing mechanism 44 and the clamp mechanism 25 is mounted to a through hole 151 of a main spindle 15 in a manner to be detached from the front of the main spindle.
Description
Technical field
The present invention relates to process the main shaft device of lathe of various workpiece and the tool holder clamping unit that in this device, uses.
Background technology
Generally speaking, the main shaft device of lathe is equipped with in the inside of main tapping supports main shaft rotatably and in the clamp mechanism of the front end portion grips tool holder of this main shaft.In the through hole of main shaft, accommodate the clamping action of carrying out above-mentioned clamp mechanism or unclamp the pull bar of action, and along clamping direction above-mentioned pull bar is applied the disk spring of power, with the state of lamination between the spring base on the pars intermedia outer peripheral face that is integrally formed in above-mentioned pull bar be formed between the ladder difference on the inner peripheral surface of through hole of main shaft.And, by being arranged on the clamping cancel system of main tapping side, resist above-mentioned deep-draw bar, and, remove the clamped condition of the tool holder of clamp mechanism by the place ahead axially moving by the elastic force of disk spring.(with reference to patent documentation 1)
Patent documentation 1: the spy opens flat 1-135403 communique
But, the main shaft device of above-mentioned lathe in the past, because the front end face of above-mentioned disk spring is only blocked the end difference in the main shaft side, so, when the repairing of the Maintenance and Repair of the force application mechanism that carries out constituting or fault by clamp mechanism and disk spring etc., need dismantle from the main shaft rear portion, thereby cause operating the very problem of trouble.
Summary of the invention
The object of the present invention is to provide a kind of main shaft device of lathe, it has been eliminated at above-mentioned problems of the prior art point, and can easily possess the tool holder clamping unit of clamp mechanism and force application mechanism, thereby improve the operability of maintenance from the dismounting of main shaft the place ahead.
In addition, other purposes of the present invention are to provide a kind of tool holder clamping unit, and it is used for the main shaft device of the lathe that can easily dismantle from main shaft.
In order to address the above problem a little, the inventive concept of technical scheme 1 record is: main shaft device, has the tool holder clamping unit, this tool holder clamping unit, by: rotatably support main shaft and have the unit main body of the tool mounting hole that is used for the erecting tools retainer in the inside of main tapping with through hole, with the clamp mechanism that clamps described tool holder, with with clamped condition the force application mechanism of this clamp mechanism application of force is constituted, this main shaft device, tool holder clamping unit the place ahead from described main tapping can be removably mounted on the described through hole of main shaft, and be provided with the clamping cancel system of removing the clamped condition of described clamp mechanism by the described force application mechanism of operating described tool holder clamping unit one side in the first side of described main shaft.
The inventive concept of technical scheme 2 records is: in technical scheme 1, the said units main body of above-mentioned tool holder clamping unit is a tubular, and above-mentioned clamp mechanism is set in the inside of said units main body, in the rearward end of said units main body above-mentioned force application mechanism is set.
The inventive concept of technical scheme 3 records is: in technical scheme 2, above-mentioned clamp mechanism is made of sliding part and a plurality of clamping part, and above-mentioned sliding part is provided in the said units main body and can axially moves back and forth in the prescribed stroke scope; Above-mentioned a plurality of clamping part engages with the leading section of this sliding part; Above-mentioned force application mechanism is made of pull bar and force application part, and above-mentioned pull bar is connected the rearward end of above-mentioned sliding part; Above-mentioned force application part is positioned to spring base parts that the rearward end of this pull bar is provided with and between the spring base parts that the rearward end of said units main body is provided with, and is used under normal conditions the rearward clamped position of above-mentioned pull bar being applied power.
The inventive concept of technical scheme 4 record is: in any of technical scheme 1～3, at the integrally formed flange part of the leading section of said units main body, and at the front end face of above-mentioned main shaft this flange part is installed by screw.
The inventive concept of technical scheme 5 records is: in technical scheme 3, on the central part of above-mentioned clamp mechanism and pull bar, be formed with the coolant guiding channel that is used for supplying with to the central part of above-mentioned tool holder cooling medium.
The inventive concept of technical scheme 6 records is: in technical scheme 3, above-mentioned force application mechanism is disk spring or helical spring.
The inventive concept of technical scheme 7 records is: in any of technical scheme 1～6, form the through hole of above-mentioned main shaft in the mode that diminishes to the diameter dimension stage to the back-end from front end.
The inventive concept of technical scheme 8 records is: the tool holder clamping unit comprises: it is tubular that unit main body, this unit main body have the tool mounting hole and this unit main body that are used at leading section erecting tools retainer; Clamp mechanism, this clamp mechanism are set at the inside of this unit main body and clamp above-mentioned tool holder; Force application mechanism, this force application mechanism are set at the rearward end of said units main body and with clamped condition above-mentioned clamp mechanism are applied power; And above-mentioned tool holder clamping unit can be installed from main shaft the place ahead of lathe with dismantling.
(invention effect)
According to main shaft device of the present invention, has the tool holder clamping unit, this tool holder clamping unit, be equipped with: have the clamp mechanism of clamping tool retainer on the unit main body of the tool mounting hole that is used for the erecting tools retainer at leading section and this clamp mechanism is applied the force application mechanism of power with clamped condition; Above-mentioned main shaft device is that the through hole of relative main shaft is removably installed this tool holder clamping unit from main shaft the place ahead.Therefore, the through hole by relative main shaft can one take out clamp mechanism and force application mechanism from main shaft the place ahead handling instrument retainer clamping unit.In addition, when puller retainer clamping unit, just can judge the state of force application mechanism or its improper state etc. from visual observation.By these reasons, can easily carry out Maintenance and Repair or repairing.
In addition, the present invention is owing to install force application mechanism integral body in clamping unit one side, so, can be not in the way of the inner peripheral surface of the through hole of main shaft, be provided for the flange shape end difference that card ends the front end face of force application part yet, therefore, only carry out the processing of the through hole of main shaft, thereby can improve the efficient of process operation, and reduce cost from an axial side.
Description of drawings
Fig. 1 is the central portion longitudinal section of the main shaft device of expression lathe of the present invention.
Fig. 2 is the central portion longitudinal section of main shaft device that the state of tool holder clamping unit is taken off in expression.
Fig. 3 is the central portion longitudinal section of the clamped condition of representational tool retainer clamping unit.
Fig. 4 is the central portion longitudinal section of the releasing orientation of representational tool retainer clamping unit.
Fig. 5 is the central portion longitudinal section of clamped condition of the tool holder clamping unit of expression other embodiments of the present invention.
Fig. 6 is the central portion longitudinal section of releasing orientation of the tool holder clamping unit of presentation graphs 5 expression.
Fig. 7 is the central portion longitudinal section of clamped condition of the tool holder clamping unit of expression another embodiment of the invention.
Fig. 8 is the central portion longitudinal section of the releasing orientation of expression tool holder clamping unit shown in Figure 7.
Among the figure: the 11-main shaft device, the 12-main tapping, 15-main shaft, 21-tool holder, 22-tool holder clamping unit, the 23-unit main body, 24, the 37-screw, the 25-clamp mechanism, the 26-sliding part, 27,82-clamping part, 31,41,84-spring base parts, the 36-pull bar, the 39-helical spring, the 43-disk spring, the 44-force application mechanism, 50-clamps cancel system, the 151-through hole, 191,213,261,361,381,611,621,814, the 861-coolant guiding channel, 231-tool mounting hole, 232-flange part.
The specific embodiment
Below, the embodiment to the main shaft device that uses in the lathe that the present invention specialized is illustrated with reference to the accompanying drawings.
Fig. 1 is the longitudinal section of expression main shaft 11 integral body.As shown in Figure 1, the main tapping 12 of main shaft 11 is configured by urceolus 13 and inner core 14, and main shaft 15 is by a plurality of bearings 16 and can be supported on the inboard of this inner core 14 rotatably at assigned position.Rearward end at the urceolus 13 of above-mentioned main tapping 12 is installed with motor 18, on this rotating shaft 19, connects the rearward end of above-mentioned main shaft 15 by shaft joint 20, and the rotation by rotating shaft 19, makes main shaft 15 rotations by shaft joint 20.
Fig. 2 is the longitudinal section that expression enlarges above-mentioned main tapping 12 and main shaft 15.As shown in Figure 2, on the central part of main shaft 15, form through hole 151, this through hole 151 is used for embedding tool holder clamping unit 22 described later with dismantling, many places are formed with screwed hole 152 on the front end face of main shaft 15, and this screwed hole 152 is used for setting tool retainer clamping unit 22 on main shaft 15.Embed the diameter of through hole 151 of the above-mentioned tool holder clamping unit 22 of above-mentioned main shaft 15, as shown in Figure 2, be formed along with from front end (left end of Fig. 2) to the back-end (right side of Fig. 2) advance and stage ground diminishes.
Fig. 3 is the central portion longitudinal section that expression keeps tool holder clamping unit 22 integral body of tool holder 21.Tool holder 21 is so-called BT retainers as used herein.At the leading section (left end of Fig. 3) that becomes the unit main body 23 horizontal cylindraceous that constitutes this tool holder clamping unit 22, be formed with the tool mounting hole 231 of the taper shank portion 211 that is used to embed above-mentioned tool holder 21, integrally formed flange part 232 on the leading section periphery.On this flange part 232, form screw insertion hole 233 in many places, as shown in Figure 1,, unit main body 23 is fixed on the main shaft 15 by being threadedly engaged with screw 24 from screw insertion hole 233 in the above-mentioned screwed hole 152 on the front end face that is formed on main shaft 15.
Inside in said units main body 23, contain clamp mechanism 25, this clamp mechanism 25, backward directions are drawn with engaging to the outstanding tractive unit 212 that forms of the front end of this taper shank portion 211 by the above-mentioned tool holder 21 in the tool mounting hole 231 that will be inserted in unit main body 23, can clamp at assigned position.If this clamp mechanism 25 is illustrated, then have the sliding part 26 of coolant guiding channel 261 in the axle center, in the prescribed stroke scope, be inserted on the inner peripheral surface 234 of rearward end of said units main body 23 can carry out axial reciprocating mode.At the leading section of this sliding part 26, interconnect in the mode of back and forth lifting to the radial direction of unit main body 23 of can carrying out and engage the clamping part 27 that describes in detail later by connecting spring 28 in many places.
In the rearward end of said units main body 23, wait by welding to be connected with restriction to the position at the direction of principal axis rear of above-mentioned sliding part 26 and be used to support the spring base parts 31 of disk spring 43 described later.In the rearward end of above-mentioned sliding part 26, be formed with shaft sleeve part 262, be formed on its inner negative thread 263, be threadedly engaged with the pin thread 362 of the leading section that is formed on pull bar 36.On the outer peripheral face of above-mentioned sliding part 26, parallel formation gathering sill 264 with direction of principal axis, said units main body 23 interior all 234 on, at assigned position the stop 32 be embedded in the above-mentioned gathering sill 264 is installed by screw 33.At the leading section of above-mentioned gathering sill 264, stop 34 is installed by screw 35.Close stop 32 by above-mentioned gathering sill 264, make and allow moving in the inner peripheral surface 234 of said units main body 23, and stop unit main body 23 to close relatively rotating of sliding part 26 to the axial of sliding part 26.In addition, relatively rotating by screw 37 above-mentioned sliding parts 26 of restriction and pull bar 36.
On the outer peripheral face of the operation tube portion 265 of the minor diameter of the leading section that is integrally formed in above-mentioned sliding part 26,2 places are formed with ring-type teat 266 along its circumferencial direction and the interval of reserving regulation in front and back.On the other hand, in the leading section inboard of above-mentioned clamping part 27, integrally formed clamp jaw 271, at pars intermedia, the mode with corresponding with the ring-type teat 266 of above-mentioned sliding part 26 is formed with recess 272 at Liang Chu.And, on the inner peripheral surface 234 of said units main body 23, form end difference 235 in the mode corresponding, and be formed with end difference 236 in the mode corresponding with the locking protrusion 274 in the rearward end outside that is formed on above-mentioned clamping part 27 with the locking protrusion 273 in the outside that is formed on above-mentioned clamping part 27.
On the coolant guiding channel 261 of the central part that is formed on above-mentioned sliding part 26, can carry out the axial ground that moves back and forth and insert cooling medium supply nozzle 38 with coolant guiding channel 381, and, make that axially cooling medium supply nozzle 38 is extracted in the place ahead by end integrally formed large-diameter portion 382 on the outer peripheral face of the base end part of cooling medium supply nozzle 38 at card on the end difference 267 of the inner peripheral surface of the coolant guiding channel 261 that is formed on above-mentioned sliding part 26.Helical spring 39 is between the rear end face of above-mentioned cooling medium supply nozzle 38 and be formed between the rear end face of spring reception room 363 of leading section of above-mentioned pull bar 36, under normal conditions, cooling medium supply nozzle 38 is forwards applied power.Thus, the front end face of cooling medium supply nozzle 38 is pressed against on the open rearward end of the coolant guiding channel 213 that is formed at tool holder 21, and, can supply with cooling medium to the central part of tool holder 21 from the coolant guiding channel 361 of pull bar 36 by spring reception room 363 and coolant guiding channel 381 etc.
On the rearward end outer peripheral face of above-mentioned pull bar 36, form outer screw section 364, on this outer screw section 364, be threadedly engaged with spring base parts 41, and it can not be connected with relatively rotating by hold-down screw 42.Between above-mentioned spring base parts 31 and above-mentioned spring base parts 41, axially a plurality of disk springs 43 as force application part are installed with layer-by-layer state.Rearward end at pull bar 36 is formed with than the big connecting hole 365 of above-mentioned coolant guiding channel 361 diameters.
In this embodiment, by above-mentioned spring base parts 31, pull bar 36, spring base parts 41 and disk spring 43 etc., constituted force application mechanism 44, this force application mechanism 44 is used for clamped condition the clamping part 27 of clamp mechanism 25 being applied power.
Fig. 3 represents following state: by rearward moving above-mentioned sliding part 26 by disk spring 43, clamping part 27 rearward moves by operation tube portion 265 and ring-type teat 266, tool holder 21 is pulled rearward by clamping part 27 and by tractive unit 212, and clamped.Under this state, the ring-type teat 266 of above-mentioned sliding part 26 is extracted and rides on the teat from the recess 272 of above-mentioned clamping part 27, along the closing direction displacement, clamp jaw 271 is ended on the tractive unit 212 of tool holder 21 by card, locking protrusion 273 rides on the end difference 235 of unit main body 23, and, be and on end difference 236, block the state that ends above-mentioned locking protrusion 274.
Under this state, when the elastic force of above-mentioned pull bar 36 opposing disk springs 43 and when forwards mobile, the ring-type teat 266 of above-mentioned sliding part 26 is embedded in the recess 272 of clamping part 27, and pass through the front end face of the large-diameter portion of sliding part 26, push the rear end face of clamping part 27, as shown in Figure 4, opened by expansion when forwards moving, and be indexed to the position of the clamped condition of releasing appliance retainer 21 with clamping part 27.
Then, to being installed in above-mentioned main tapping 12 sides as shown in Figure 1 and forwards moving the pull bar 36 of above-mentioned tool holder clamping unit 22 and the clamping cancel system 50 of removing the clamped condition of clamp mechanism 25 is illustrated.
As shown in Figure 1, in the through hole 151 of above-mentioned main shaft 15, the mode that contacts with the rear end face with above-mentioned spring base parts 41 can contain operation parts 51 with axially moving back and forth, in the through hole 511 that forms at these operation parts 51 upper edge radial directions, connect and fixing operation pin 52.On above-mentioned main shaft 15, to the outstanding mode in outside and in operation pin 52 reciprocating mode in the prescribed stroke scope axially, form guide channel 154 at two places with the both ends of above-mentioned operation pin 52.In the modes corresponding with this operation pin 52, between the outer peripheral face of the rearward end inner peripheral surface 131 of above-mentioned urceolus 13 and above-mentioned main shaft 15, accommodating axially can pistons reciprocating 53 in the prescribed stroke scope.In the rearward end of above-mentioned urceolus 13, the position limit collar 54 of piston 53 is installed.
Then, the cooling medium feed path that is used for supplying with from the open rearward end of the coolant guiding channel 361 of above-mentioned rotating shaft 19 side direction pull bars 36 cooling medium is illustrated.
At the central part of above-mentioned operation parts 51 and operation pin 52, axially connect and support cooling medium supply pipe 61 with coolant guiding channel 611.The leading section of this cooling medium supply pipe 61 is embedded in the above-mentioned connecting hole 365 that is bonded on above-mentioned pull bar 36 by sealing gasket, and is formed with the pilot hole 612 bigger than coolant guiding channel 611 diameters in rearward end.At this pilot hole 612 be formed between the leading section of coolant guiding channel 191 of leading section of above-mentioned rotating shaft 19, be connected with cooling medium supply pipe 62 by sealing gasket with coolant guiding channel 621.
In this embodiment, by coolant guiding channel 611,621,361, spring reception room 363 and coolant guiding channel 381 etc., be configured for supplying with the cooling medium feed path 64 of cooling medium to the coolant guiding channel 213 of tool holder 21.
In addition, as shown in Figure 1, head cover 71 is installed at the front end face of above-mentioned main tapping 12.
Then, to main shaft device as constituted above, its action is illustrated.
Fig. 1 represents following state: insert shown in Figure 3ly by the tool holder clamping unit 22 after integrated in the through hole 151 of main shaft 15, and by screw 24 flange part 232 of unit main body 23 is threadedly engaged with and is fixed on the screwed hole 152 of front end face of main shaft 15.In addition, also represent following state: be installed in the tool holder 21 on this main shaft 15, clamped by the clamp mechanism 25 in the tool holder clamping unit 22, in the connecting hole 365 of the rearward end of pull bar 36, embed the leading section that engages cooling medium supply pipe 61, simultaneously, the rear end face of spring base parts 41 contacts with the front end face of the operation parts 51 that clamp cancel system 50.And above-mentioned clamp mechanism 25 is maintained at clamped condition, clamps cancel system 50 and is maintained at non-disarm state.
Under this state, when making main shaft 15 rotations by the rotating shaft 19 of motor 18 and by connector 20, tool holder clamping unit 22 and tool holder 21 rotate with instrument, and carry out the process operation at the workpiece of the workbench upper support of not shown lathe.
In this workpiece processing, supply with to the coolant guiding channel 213 of tool holder 21 by above-mentioned cooling medium feed path 64, thereby carry out the lubricated and cooling that adds the Ministry of worker of workpiece.
Finish workpiece processing and when removing the clamping of the tool holder 21 that is undertaken by the clamp mechanism 25 of tool holder clamping unit 22, clamp piston 53 forwards the moving in Fig. 1 of cancel system 50, and, forwards move operation parts 51 and operation pin 52 by piston 53 along equidirectional mobile piston 53.Moving forwards by these operation parts 51, the spring base parts 41 of tool holder clamping unit 22 sides forwards move, and pull bar 36 is resisted the spring force of disk springs 43 and is forwards moved, and as mentioned above, removes the clamped condition of the tool holder 21 that is undertaken by clamp mechanism 25.Under this state, by the automatic tool changer. atc of not shown lathe, tool holder 21 exchanges with other tool holder 21.
On the other hand, in the Maintenance and Repair of carrying out tool holder clamping unit 22 or when repairing, unload tool holder 21 from the tool mounting hole 231 of tool holder clamping unit 22.Under this state, become empty clamped condition by disk spring 43 clamp mechanism 25.Under this state, unload screw 24.Then, by from the through hole 151 of main shaft 15 to the place ahead of main shaft puller retainer clamping unit 22, take out the tool holder clamping unit 22 of state shown in Figure 3 to the outside of the through hole 151 of main shaft 15.
According to the main shaft of above-mentioned embodiment, can obtain following effect.
(1) in the above-described embodiment, as shown in Figure 3, at the chimeric fixing spring base member 41 of rearward end of the pull bar 36 of tool holder clamping unit 22, be used for above-mentioned clamp mechanism 25 is applied the disk spring 43 of power with clamped condition, between spring base parts 31 and spring base parts 41.And, carry out according to the mode that clamp mechanism 25 and force application mechanism 44 all are installed in tool holder clamping unit 22 sides.Therefore, can be from the front face side of main shaft 15, through hole 151 at this main shaft 15 is embedded in tool holder clamping unit 22 integral body, and can dismantle, also can take out clamp mechanism 25 and force application mechanism 44 together, maintenance, maintenance or the repairing of clamp mechanism 25 and force application mechanism 44 can be easily carried out, thereby the operability of maintenance can be improved.Promptly, even exchange for disk spring 43, can not produce yet from the rear side of main shaft device unload miscellaneous part and operate miscellaneous, the tool holder clamping unit 22 regardless of the state that takes out from the place ahead of main shaft 15 can unload or install disk spring 43 simply.
(2) state in the mode on the implementation, owing in tool holder clamping unit 22 sides clamp mechanism 25 being installed and force application mechanism 44 has carried out blocking, so also can be formed for the flange shape end difference that card ends disk spring 43 front ends of force application mechanism 44 at the inner peripheral surface of the through hole 151 of main shaft 15.Therefore, the aperture size of the through hole 151 of main shaft 15 can be constituted that stage ground diminishes along with advancing to the back-end from front end.So, can only process the process operation of the through hole 151 of main shaft 15, thereby can improve the processing efficiency of operation from axial the place ahead of main shaft 15.
Then, based on Fig. 5 and Fig. 6 other embodiment of the present invention is illustrated.
This embodiment, be corresponding to the structure of the multi-form tool holder 21 of the tool holder that uses in the above-described embodiment 21, therefore the mode of the tool mounting hole 231 of tool holder clamping unit 22 and clamp mechanism 25 is different with the formation of above-mentioned embodiment, other formation is identical with above-mentioned embodiment, so omit explanation.
The tool holder 21 that uses in this embodiment is so-called HSK retainers, shown in the double dot dash line of Fig. 5 and Fig. 6, its taper shank portion 211 is formed on the cavity of rear aperture, and be the rear end face of the retainer portion in the periphery conical surface of taper shank portion 211 and its place ahead restrained the parts of two sides restricted type of position.
Be formed on the outer screw section 268 of the leading section of above-mentioned sliding part 26, be threaded on the screwed hole 811, this screwed hole 811 is formed on to horizontal stroke is cylindraceous and operates on the inner peripheral surface of tube 81.The a plurality of clamping parts 82 of contact on the outer peripheral face of aforesaid operations tube 81, the front-end edge 821 of each clamping part 82 can ride on the end difference 812 on the outer peripheral face that is formed on aforesaid operations tube 81 and close configuration.The end edge 813 of aforesaid operations tube 81, the rearward end inboard that can ride over above-mentioned clamping part 82 is given prominence on the end difference 822 that forms and close the configuration.At the front end lateral border of above-mentioned clamping part 82, be formed with and only block in that card that form ends the clamp jaw 823 in the section portion to the inner peripheral surface of the taper shank portion 211 of above-mentioned tool holder 21 is outstanding.On the rear end face of above-mentioned clamping part 82, be formed with inclined plane 824.Accommodating in the inside of said units main body 23 in the mode corresponding and can carry out axial reciprocating guide cylinder 83, and contacting slidably with above-mentioned inclined plane 824 at the guiding surface 831 that the front end face of this guide cylinder 83 forms with this inclined plane.Spring 85 is between the spring base parts 84 and above-mentioned guide cylinder 83 that are ended by card at end difference 237, and this end difference 237 is formed on the inner peripheral surface 234 of unit main body 23.On the guiding surface 238 on the inner peripheral surface 234 that is formed on said units main body 23, contacting the guiding surface 825 in the outside that is formed on above-mentioned clamping part 82 slidably.
On above-mentioned tool holder 21, connecting cylinder 86 is installed, this connecting cylinder 86 has the coolant guiding channel 861 that is communicated with above-mentioned coolant guiding channel 213, when on main shaft 15, installing, its leading section by sealing gasket be embedded into engage be aforesaid operations tube 81 on the coolant guiding channel 814 that is formed centrally, thereby can supply with cooling medium.
Then, action being removed in the clamping of tool holder 21 is illustrated.
Fig. 5 represents such state: by disk spring 43, above-mentioned sliding part 26, pull bar 36 and operation tube 81 rearward (Fig. 5's is right-hand) move, the front-end edge 821 of clamping part 82 rides on the end difference 812 of operation tube 81, the end edge 813 of operation tube 81 rides on the end difference 822 of clamping part 82, the above-mentioned clamping part 82 of side shifting outside the radial direction of operation tube 81, clamp jaw 823 is ended in the section portion 214 and drafting tool retainer 21 by the card that card ends at tool holder 21, the rear end face of retainer portion is closely contacted on the front end face of unit main body 23, be the clamped condition of tool holder 21.Under this state, the guiding surface 831 of above-mentioned guide cylinder 83 becomes by the rearward mobile state that compresses spring 85 in the inclined plane 824 of clamping part 82.
Under this state, after unit main body 23 and spring base parts 31 forwards move pull bar 36 and spring base parts 41, the operation tube 81 that is connected the leading section of sliding part 26 forwards moves as shown in Figure 6, the end difference 812 of operation tube 81 moves along the direction that the front-end edge 821 from clamping part 82 forwards leaves, by spring 85, forwards the mobile guide tube 83, and the inclined plane 824 of pushing clamping part 82 by guiding surface 831, so, the mobile clamping part 82 in side in the radial direction of operation tube 81.Therefore, the end edge 813 of operation tube 81 moves along the direction of leaving from end difference 822, as shown in Figure 6, removes the clamped condition of the tool holder 21 that is undertaken by clamping part 82.
In addition, be used for the action of clamping tool retainer 21 according to the order opposite with clamping the releasing action.
Even in the above-described embodiment, also can obtain the effect identical with the effect of aforementioned embodiments.
Then, based on Fig. 7 and Fig. 8, this is invented another embodiment be illustrated.
Because this embodiment, be corresponding to the structure of the multi-form tool holder 21 of the tool holder that in aforesaid 2 embodiments, uses 21, so the tool mounting hole 231 of tool holder clamping unit 22 and the mode of clamp mechanism 25 are different with the formation of aforesaid embodiment, other formation is identical with above-mentioned embodiment, the Therefore, omited explanation.
The tool holder 21 of Shi Yonging is so-called KM retainer in this embodiment, shown in the double dot dash line of Fig. 7 and Fig. 8, its taper shank portion 211 is formed on the cavity of rear aperture, and be the rear end face of the retainer portion in the periphery conical surface of taper shank portion 211 and its place ahead restrained the parts of two sides restricted type of position, but on the inner peripheral surface of taper shank portion 211,2 place's stop holes 215 along the circumferential direction are formed to outer peripheral face and connect.
As shown in Figure 7, at the integrally formed operating portion 269 of the leading section of above-mentioned sliding part 26, on its outer peripheral face, be formed for engaging the engaging recessed part 87 of ball 92, simultaneously, near the place ahead of engaging recessed part 87 (left of Fig. 7), be formed with the guiding surface 88 that is connected with this engaging recessed part 87.On the inner peripheral surface of said units main body 23, be fixed with ball retainer (ball holder) 91 with through hole 911 in the assigned position embedding.Near the leading section of this ball retainer 91, be formed with at 2 places and can block the only stop hole 912 of ball 92 (ball).On the stop hole 215 of above-mentioned tool holder 21, embed above-mentioned ball 92.
Then, action being removed in the clamping of tool holder 21 is illustrated.
Fig. 7 represents such state: by rearward mobile pull bar 36 of disk spring 43 and spring base parts 41, and rearward mobile sliding part 26 and operating portion 269 thereof, guiding surface 88 by operating portion 269, radial direction along ball retainer 91 in stop hole 912 moves ball 92 to foreign side, and at stop hole 215 embedded goals 92, by ball 92 drafting tool retainers 21, the rear end face of retainer portion is close on the front end face of unit main body 23, make tool holder 21 be in clamped condition.Under this state, relative said units main body 23 and spring base parts 31, pull bar 36 and spring base parts 41 are resisted the elastic force of disk springs 43 and are forwards moved, at this moment, as shown in Figure 8, because forwards mobile sliding part 26 and operating portion 269 thereof, and the guiding surface 88 of move operation portion 269 forwards, so engaging recessed part 87 is corresponding with ball 92, ball 92 is directed to stop hole 912 from stop hole 215, and is stuck close on the engaging recessed part 87, therefore, as shown in Figure 8, the clamped condition of releasing appliance retainer 21.
In addition, carry out the action of clamping tool retainer 21 according to the order opposite with clamping the releasing action.
Even in the tool holder clamping unit 22 of above-mentioned embodiment, also can obtain the identical effect of effect with the tool holder clamping unit 22 of the embodiment of in Fig. 1, narrating.
But in main shaft device shown in Figure 1, when changing to according to the such clamping mode of Fig. 5 or Fig. 7, only exchange tool retainer 21 gets final product, can be general other parts.The main shaft device of this invention, when making the different lathe of clamping means, because the parts beyond can general utility tool retainer clamping unit 22, so can cut down the expense of making.
In addition, also can change above-mentioned embodiment in the following way.
Replace disk spring 43, also can use helical spring or other force application part.
Also can suitably change the formation of clamp mechanism 25.
Also can suitably change the formation of force application mechanism 44.
Also can omit above-mentioned cooling medium feed path 64.
Also can will specialize as the tool holder clamping unit that in main shaft device, adopts, that is, the following formation of this tool holder clamping unit is specialized: the unit main body of in main shaft device, using and can be installed in with dismantling the tubular the through hole of main shaft from main shaft the place ahead; Be set at the inside of this unit main body and be used for the clamp mechanism of clamping tool retainer; Be set at the rearward end of said units main body and be used for the force application mechanism of clamped condition to the above-mentioned clamp mechanism application of force.
Claims (8)
1. a main shaft device is characterized in that,
Has the tool holder clamping unit, this tool holder clamping unit, by: rotatably support main shaft and have the unit main body of the tool mounting hole that is used for the erecting tools retainer in the inside of described main tapping with through hole, with the clamp mechanism that clamps described tool holder, with with clamped condition the force application mechanism of this clamp mechanism application of force is constituted
This main shaft device, tool holder clamping unit the place ahead from described main tapping can be removably mounted on the described through hole of main shaft, and be provided with the clamping cancel system of removing the clamped condition of described clamp mechanism by the described force application mechanism of operating described tool holder clamping unit one side in the first side of described main shaft.
2. main shaft device according to claim 1, it is characterized in that, the described unit main body of described tool holder clamping unit is a tubular, and in the inside of described unit main body described clamp mechanism is set, and in the rearward end of described unit main body described force application mechanism is set.
3. main shaft device according to claim 2 is characterized in that, described clamp mechanism is made of sliding part and a plurality of clamping part, and described sliding part is provided in the described unit main body and can axially moves back and forth in the prescribed stroke scope; Described a plurality of clamping part engages with the leading section of this sliding part,
Described force application mechanism is made of pull bar and force application part, and described pull bar is connected the rearward end of described sliding part; Described force application part is positioned to spring base parts that the rearward end of this pull bar is provided with and between the spring base parts that the rearward end of described unit main body is provided with, and is used under normal conditions the rearward clamped position of described pull bar being applied power.
4. according to any described main shaft device in the claim 1～3, it is characterized in that,, and at the front end face of described main shaft this flange part is installed by screw at the integrally formed flange part of the leading section of described unit main body.
5. main shaft device according to claim 3 is characterized in that, on the central part of described clamp mechanism and pull bar, is formed with the coolant guiding channel that is used for supplying with to the central part of described tool holder cooling medium.
6. main shaft device according to claim 3 is characterized in that, described force application mechanism is disk spring or helical spring.
7. according to any described main shaft device in the claim 1～3, it is characterized in that, form the through hole of described main shaft in the mode that diminishes to the diameter dimension stage to the back-end from front end.
8. a tool holder clamping unit is characterized in that, by: have the unit main body of the tool mounting hole that is used for the erecting tools retainer and clamp the clamp mechanism of described tool holder and the force application mechanism of this clamp mechanism application of force is constituted with clamped condition,
And described tool holder clamping unit can be installed on main shaft from main shaft the place ahead of lathe with dismantling.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005044657A JP4730939B2 (en) | 2004-03-31 | 2005-02-21 | Spindle device |
| JP2005044657 | 2005-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2920487Y true CN2920487Y (en) | 2007-07-11 |
Family
ID=38252966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520105394 Expired - Lifetime CN2920487Y (en) | 2005-02-21 | 2005-10-19 | Main shaftdevice, tool keeper clamping unit used in the same device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2920487Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601431A (en) * | 2012-03-13 | 2012-07-25 | 上海瑞纽机械装备制造有限公司 | Auxiliary support device for cutter head |
| CN107081438A (en) * | 2016-02-16 | 2017-08-22 | 协鸿工业股份有限公司 | Main shaft device with cooling circuit |
| CN110053918A (en) * | 2018-01-18 | 2019-07-26 | 新兴重工湖北三六一一机械有限公司 | One kind mentioning fortune utensil |
-
2005
- 2005-10-19 CN CN 200520105394 patent/CN2920487Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601431A (en) * | 2012-03-13 | 2012-07-25 | 上海瑞纽机械装备制造有限公司 | Auxiliary support device for cutter head |
| CN107081438A (en) * | 2016-02-16 | 2017-08-22 | 协鸿工业股份有限公司 | Main shaft device with cooling circuit |
| CN110053918A (en) * | 2018-01-18 | 2019-07-26 | 新兴重工湖北三六一一机械有限公司 | One kind mentioning fortune utensil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Japan, Tokyo, zip code: Patentee after: Omatsu NTC Corp. Address before: Japan, Tokyo, zip code: Patentee before: Nihira Fuyama Co., Ltd. |
|
| C56 | Change in the name or address of the patentee |
Owner name: KOMATSU NTC CO., LTD. Free format text: FORMER NAME: CO., LTD. RIPING TOYAMA |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070711 |
|
| EXPY | Termination of patent right or utility model |