CN101269470B - Tool replacing apparatus - Google Patents
Tool replacing apparatus Download PDFInfo
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- CN101269470B CN101269470B CN200810085820XA CN200810085820A CN101269470B CN 101269470 B CN101269470 B CN 101269470B CN 200810085820X A CN200810085820X A CN 200810085820XA CN 200810085820 A CN200810085820 A CN 200810085820A CN 101269470 B CN101269470 B CN 101269470B
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- stuck
- clamp arm
- holding section
- steel ball
- abutting part
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/155—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling
- B23Q3/1552—Arrangements for automatic insertion or removal of tools, e.g. combined with manual handling parts of devices for automatically inserting or removing tools
- B23Q3/15526—Storage devices; Drive mechanisms therefor
- B23Q3/15534—Magazines mounted on the spindle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Tool Replacement In Machine Tools (AREA)
Abstract
A tool replacement device is disclosed, comprising within a clamping arm (60): a steel ball (85), a cylindrical part (81), and a compression helical spring (83). The cylindrical part (81) supports the steel ball (85) to advance and retract the steel ball (85). The compression helical spring (83) applies force to the steel ball (85). The clamping arm (60): covers a support shaft (67). Surface of the support shaft (67) includes a first concave part (91) and a second concave part (92). If the steel ball (85) is in clamping match with the first concave part (91) and the second concave part (92), the clamping arm (60) holds the gesture. As the clamping arm (60) covers a gesture holding mechanism (80), chips will not enter into the gesture holding mechanism (80), as a result of that, damage of the clamping arm (60) caused by the chips can be prevented.
Description
Technical field
The present invention relates to a kind of clamp arm that utilizes at the main shaft of lathe and keep the tool replacing apparatus of the instrument of changing between the storehouse body of instrument.
Background technology
There was a kind of available single assembly workpiece to be carried out the lathe of multiple processing such as " chasing ", " perforate " in the past.Lathe has tool replacing apparatus.Tool replacing apparatus in advance with many holding tools such as screw tap and drill bits the taking on the position of regulation, and automatically the instrument that finished of processing and the following required instrument of processing are changed.
Openly put down in the tool replacing apparatus that 2 years No. 15936 communiques put down in writing in Japan special permission, make main tapping vertically (Z-direction) move, and utilize cam mechanism at main tapping and be fixed between the tool storage room on the framework and carry out tool changing.
In tool replacing apparatus in the past 200 shown in Figure 8, back shaft 201 rotatably supports storehouse seat 202 in the center of storehouse seat 202.In the periphery of storehouse seat 202, a plurality of fulcrum platforms 251 are along the circumferentially central angle fixed interval to stipulate that with back shaft 201 is the center.Each fulcrum platform 251 supports clamp arm 250 rotationally by back shaft 252.Front (is distolateral) at clamp arm 250 has the handle part 255 of controlling tool retainer.Clamp arm 250 rotatably supports cam follower 253 towards main tapping (not shown) side near back shaft 252.Cam follower 253 can with the inclined plane butt of the cam body that on the main tapping front surface, has (not shown).If main tapping moves up and down, then the cam follower 253 of clamp arm 250 slides on the inclined plane of the cam body of main tapping.Can between near the close position of main shaft and the retreating position that leaves from main shaft, move back and forth at the distolateral handle part 255 of clamp arm 250 1.
Another distolateral bottom outlet 256 that has been provided with at clamp arm 250.There is bottom outlet 256 taking in compression helical spring 257 and steel ball 258.The part of steel ball 258 is outstanding from the opening that bottom outlet 256 is arranged.Be inserted with the clamping support collar 210 that iron is made outside on the protuberance 202a of storehouse seat 202.Have the cross section in the periphery that clamps the support collar 210 and be circular-arc guide surface 211.Seat 202 sides have groove 212 in the storehouse of guide surface 211.If clamp arm 250 moves back and forth, then there is the steel ball 258 in the bottom outlet 256 clamping slip on the guide surface 211 that supports the collar 210.If clamp arm 250 rotates and makes handle part 255 near main shaft, then steel ball 258 can slide on guide surface 211 and be embedded in the groove 212.As mentioned above, clamp arm 250 can keep attitude under the state that makes handle part 255 near main shaft.
In tool replacing apparatus 200 in the past, workpiece adds the smear metal that produces man-hour and enters sometimes near the clamping support collar 210.The smear metal meeting is attached on guide surface 211 or the steel ball 258, thereby existence can cause problems such as losing of the bad or clamp arm 250 of the slip of steel ball 258.
Summary of the invention
The object of the present invention is to provide a kind of prevent the clamp arm that causes by smear metal lose and move the tool replacing apparatus of bad generation.
To achieve these goals, the tool replacing apparatus of the invention of technical scheme 1 comprises: the main tapping that the main shaft of lathe is rotatably supported, the pillar that described main tapping can be supported up or down, can be that the center is fixed on the storehouse body on the described pillar with being rotated calibration with an axis, one end has the handle part of the instrument of controlling and is a plurality of clamp arms that are positioned at described storehouse body periphery radially, and support described clamp arm and be positioned at the fulcrum platform of described storehouse body periphery, is that rotate at the center by the described clamp arm behind the rotation calibration with described fulcrum platform, described handle part moves back and forth between near the close position of described main shaft and the retreating position that leaves from described main shaft, described tool replacing apparatus also comprises: holding section, this holding section are positioned on the described clamp arm and with described fulcrum decometer closes; First is stuck portion, and this first portion of being stuck is positioned on the described fulcrum platform, and moves to first attitude that keeps described clamp arm under the state of described retreating position at described handle part by engaging with described holding section; And second be stuck portion, this second portion of being stuck is positioned on the described fulcrum platform, and moving to describedly near second attitude that keeps described clamp arm under the state of position at described handle part by engaging with described holding section, described holding section, described first is stuck portion for described clamp arm or described fulcrum platform and described second portion of being stuck covers.
Therefore, workpiece adds the smear metal that produces man-hour and can not enter into clamped position.Consequently, losing of clamp arm can be prevented, and the action of clamp arm can be carried out swimmingly.
The tool replacing apparatus of the invention of technical scheme 2 comprises: the main tapping that the main shaft of lathe is rotatably supported, the pillar that described main tapping can be supported up or down, can be that the center is fixed on the storehouse body on the described pillar with being rotated calibration with an axis, one end has the handle part of the instrument of controlling and is a plurality of clamp arms that are positioned at described storehouse body periphery radially, and support described clamp arm and be positioned at the fulcrum platform of described storehouse body periphery, is that rotate at the center by the described clamp arm behind the rotation calibration with described fulcrum platform, described handle part moves back and forth between near the close position of described main shaft and the retreating position that leaves from described main shaft, described tool replacing apparatus also comprises: holding section, this holding section are positioned on the described fulcrum platform and with described clamp arm and engage; First is stuck portion, and this first portion of being stuck is positioned on the described clamp arm, and moves to first attitude that keeps described clamp arm under the state of described retreating position at described handle part by engaging with described holding section; And second be stuck portion, this second portion of being stuck is positioned on the described clamp arm, and moving to describedly near second attitude that keeps described clamp arm under the state of position at described handle part by engaging with described holding section, described holding section, described first is stuck portion for described clamp arm or described fulcrum platform and described second portion of being stuck covers.
Therefore, workpiece adds the smear metal that produces man-hour and can not enter into clamped position.Consequently, losing of clamp arm can be prevented, and the action of clamp arm can be carried out swimmingly.
In the tool replacing apparatus of the invention of technical scheme 3 and technical scheme 4, described holding section comprises: with described first be stuck abutting part that portion and second is stuck portion's butt, support described abutting part and be stuck the force application mechanism of portion the described abutting part application of force so that this abutting part can be stuck the supporting mechanism that portion and described second portion of being stuck advance, retreat and be positioned on the described supporting mechanism and be stuck portion and described second towards described first towards described first.
Therefore, holding section and first, second are stuck produce frictional force between the portion, thus the attitude of maintenance clamp arm.
In the tool replacing apparatus of the invention of technical scheme 5, the back shaft that supports described clamp arm is arranged on the described fulcrum platform, described first is stuck portion and described second portion of being stuck is arranged on the outer peripheral face of described back shaft, described holding section is configured in the inside of described clamp arm, described holding section comprises: with described first be stuck the abutting part that portion and second is stuck portion's butt, this abutting part supports described abutting part so that can be stuck portion and described second portion of being stuck advances towards described first, the supporting mechanism that retreats, and be positioned on the described supporting mechanism and be stuck portion and described second towards described first and be stuck the force application mechanism of portion to the described abutting part application of force, the application of force direction of described force application mechanism is the direction with the axis normal of described back shaft.
Therefore, holding section and first, second are stuck produce frictional force between the portion, thus the attitude of maintenance clamp arm.Can cooperate the rotational action of clamp arm to keep the attitude of clamp arm.
In the tool replacing apparatus of the invention of technical scheme 6, technical scheme 7, the back shaft that is used to support described clamp arm is arranged on described fulcrum platform, and the application of force direction of described force application mechanism is the direction along the axis of described back shaft.
Therefore, can cooperate the rotational action of clamp arm to keep the attitude of clamp arm.
In the tool replacing apparatus of the invention of technical scheme 8, described abutting part is a spheroid, and described first is stuck portion and described second portion of being stuck is the concavity sphere.
Therefore, can make abutting part, first be stuck portion and second portion of being stuck is not easy to produce abrasion deformation.
Description of drawings
Fig. 1 is the longitudinal section of the major part of expression lathe 1 and tool replacing apparatus 2.
Fig. 2 is the stereogram of expression clamp arm 60, cam 28 and stationary cam 29 position relation each other.
Fig. 3 is the clamp arm 60 under the state that handle part 63 leaves from main shaft 30 seen from right flank and the cutaway view of cam 28.
Fig. 4 is the exploded perspective view of the major part of expression attitude maintaining body 80.
Fig. 5 is the exploded perspective view of major part of the attitude maintaining body 280 that tool replacing apparatus had of expression second example.
Fig. 6 is the exploded perspective view of major part of attitude maintaining body 380 of the tool replacing apparatus of expression variation 1.
Fig. 7 is the exploded perspective view of major part of attitude maintaining body 480 of the tool replacing apparatus of expression variation 2.
Fig. 8 is the cutaway view of support structure of representing the clamp arm 250 of tool replacing apparatus 200 in the past.
The specific embodiment
With reference to Fig. 1～Fig. 4 the tool replacing apparatus 2 of the present invention's first example is described.The left side of Fig. 1 is made as the front side of lathe 1, the right side is made as the rear side of lathe 1, side in front of the paper is made as the right side of lathe 1, the paper inboard is made as the left side of lathe 1.
The tool replacing apparatus 2 of first example is that the rotation by clamp arm 60 automatically will be installed in the device that instrument 5 on the main shaft 30 of lathe 1 is replaced by other instrument.Tool replacing apparatus 2 is characterised in that the attitude maintaining body 80 of maintenance clamp arm 60 attitudes is arranged on the inside of clamp arm 60, and smear metal can not enter in the attitude maintaining body 80.
The structure of lathe 1 is done the explanation of summary.As shown in Figure 1, lathe 1 comprises: pillar 10, main tapping 24, main shaft 30 and tool replacing apparatus 2.The pillar 10 of column is positioned at the rear, top of the base (not shown) that constitutes pedestal.Main tapping 24 can move up and down along the front surface of pillar 10.Main tapping 24 rotatably is supported on main shaft 30 inboard of forward lower part.On main shaft 30, can install and remove the tool retainer 7 of maintenance instrument 5.Tool replacing apparatus 2 is positioned at the front side of main tapping 24.The tool retainer 7 that tool replacing apparatus 2 will be installed on the main shaft 30 automatically is replaced by the tool retainer that keeps other instrument.
On the face of the left and right sides of pillar 10, has framework 18 (only having represented a framework 18 among Fig. 1) respectively.Framework 18 forwards extends main tapping 24 is clamped in inboard form.Storehouse brace table 37 is fixed on the leading section of pair of frames 18.Storehouse brace table 37 is supporting the storehouse seat 41 of tool replacing apparatus 2.Be fixed with the cross section on the top of storehouse brace table 37 and be the roughly storehouse lid 19 of L font.Storehouse lid 19 tilts towards the place ahead upside of lathe 1.Storehouse lid 19 covers storehouse seat 41.
Has the servo motor 22 that makes main shaft 30 rotations on the top of main tapping 24.Base has workbench (not shown).Main tapping 24 moves up and down with respect to the workpiece (machined object) that is fixed on the workbench, and main shaft 30 rotation at a high speed, thus the machining of expecting.
Reciprocating mechanism to main tapping 24 describes.As shown in Figure 1, side bearing portion 14 and following side bearing portion 15 on having on the front surface of pillar 10.Last side bearing portion 14 and following side bearing portion 15 rotatably support the ball-screw 12 of above-below direction extension.On the back side of main tapping 24, has nut 13.Nut 13 and ball-screw 12 threaded engagement.The driving shaft of the upper end of ball-screw 12 and servo motor (not shown) links by shaft coupling (not shown).Servo motor is fixed on the top of side bearing portion 14.Ball-screw 12 rotates towards just contrary both direction under the driving of servo motor.If ball-screw 12 is moving towards positive counter rotation, then nut 13 moves up and down.If nut 13 moves up and down, the main tapping 24 that then is attached on the nut 13 moves up and down.
Internal structure to main tapping 24 describes.As shown in Figure 1, main shaft 30 links by shaft coupling 23 with the driving shaft of servo motor 22.Main shaft 30 rotation under the rotation of servo motor 22 drives.The peristome 31 that has taper on the leading section (bottom) of main shaft 30, this peristome 31 are used for the taper installation portion 7a of erecting tools keeper 7.Tool retainer 7 has from the outstanding upward quilt of taper installation portion 7a controls parts 7b.Have keeper in the inside of main shaft 30 and control parts 32, this keeper is controlled the quilt that parts 32 are used to control tool retainer 7 and is controlled parts 7b.Have in the inside of main shaft 30 keeper is controlled the pull bar 34 that parts 32 are operated.Pull bar 34 has the compression helical spring 38 of towards the top keeper being controlled parts 32 application of forces all the time.Main shaft 30 is controlled parts 32 by keeper and is moved upward and controls tool retainer 7.
Installed in the peristome 31 of main shaft 30 under the state of taper installation portion 7a of tool retainer 7, if main tapping 24 moves up, the plane cam body 36 that then is arranged on the handle 20 slides along cam follower 17.At this moment, in the occasion of seeing from right flank, handle 20 is that rotate widdershins at the center with back shaft 21.Under the rotation of handle 20, horizontal shank 20a will sell 35 pushings downwards.If horizontal shank 20a will sell 35 pushings downwards, the pull bar 34 that then has pin 35 makes keeper control parts 32 and moves downwards.Control parts 32 by keeper and move downwards, keeper is controlled parts 32 and is removed being controlled controlling of parts 7b.As mentioned above, the tool retainer 7 of maintenance instrument 5 can be installed and removed with respect to main shaft 30.
Structure to tool replacing apparatus 2 of the present invention describes.As shown in Figure 1, tool replacing apparatus 2 comprises storehouse seat 41 and a plurality of clamp arm 60 (only having represented two clamp arms 60 up and down among Fig. 1).It is cylindric that storehouse seat 41 is band eaves portion.Clamp arm 60 disposes at certain intervals along the periphery at eaves portion 42 back sides of storehouse seat 41, and can rotate.Framework 18 is supporting storehouse brace table 37.Storehouse brace table 37 rotatably supports back shaft 45 by bearing 46.Back shaft 45 tilts towards the place ahead downside of lathe 1.Storehouse seat 41 is fixed on the back shaft 45.Storehouse seat 41 can be with back shaft 45 rotations.
Has housing 51 on the top of storehouse brace table 37.Has servo motor 50 on the top of housing 51.Servo motor 50 carries out the rotation calibration of storehouse seat 41.In the inboard of housing 51, the rotating shaft of servo motor 50 and the part of indexing mechanism link.Indexing mechanism comprises a plurality of gears (not shown) and cam (not shown) as known.A plurality of cam followers that plectane 47 is had are chimeric successively with the cam path (not shown) that forms on the cam of indexing mechanism.Plectane 47 carries out calibration rotation intermittently, makes a calibration in a plurality of clamp arms 60 and is positioned at storehouse seat 41 bottom.Calibration is meant storehouse seat 41 is positioned on the assigned position.Though not shown, servo motor 50 has encoder, encoder links to each other with the control device (not shown) of lathe 1.
Handle part 63 has double-fork part 69 and a pair of supporting pin 76.Double-fork part 69 is used for the slot part (not shown) of the outer diameter part of clamping tool retainer shown in Figure 17, is non-open and close type.Supporting pin 76 is positioned at the inner end of double-fork part 69.Having respectively with the center of supporting pin 76 in the outside of each end that separates towards both sides of double-fork part 69 is the cam follower 75 of pivot.Cam follower 75 slides along the cam surface 29a of the stationary cam 29 of main tapping 24 leading sections (bottom).Cam follower 75 and stationary cam 29 guide to handle part 63 in the slot part of the tool retainer 7 that is installed on the main shaft 30 exactly.If double-fork part 69 is positioned at the slot part of tool retainer 7, then a pair of supporting pin 76 slides along the slot part of tool retainer 7.As mentioned above, handle part 63 is controlled tool retainer 7.
With reference to Fig. 3 and Fig. 4 attitude maintaining body 80 is described.As shown in Figure 4, attitude maintaining body 80 comprises: tube portion 81, compression helical spring 83, steel ball 85, first recess 91 and second recess 92.
Be the inside that has the tube of round-ended cylinder shape portion 81 to be positioned at clamp arm 60.The peristome of tube portion 81 is in the face of back shaft 67.Peristome side in tube portion 81 has steel ball 85.Between the bottom surface 82 of tube portion 81 and steel ball 85, dispose compression helical spring 83.Compression helical spring 83 is towards 67 pairs of steel ball 85 application of forces of back shaft.Steel ball 85 can flexibly advance along the axis direction of tube portion 81, retreat.
On the outer peripheral face of the columned back shaft 67 that is fixed in fulcrum platform 62, have first recess 91 and second recess 92.First recess 91 and second recess 92 are the concavity sphere, and be corresponding with the shape of steel ball 85.First recess 91 and second recess 92 engage with the steel ball 85 that is compressed helical spring 83 application of forces.Engage with steel ball 85 by first recess 91, clamp arm 60 keeps first attitude.Engage with steel ball 85 by second recess 92, clamp arm 60 keeps second attitude.
With reference to Fig. 2 and Fig. 3 the rotational action of clamp arm 60 and the maintenance of attitude are described.As shown in Figure 3, under the state that handle part 63 leaves from main shaft 30, steel ball 85 engages with first recess 91.Owing between the steel ball 85 and first recess 91, produce frictional force, so clamp arm 60 keeps first attitude.Under this state, in a plurality of clamp arms 60 one is rotated calibration and is positioned at storehouse seat 41 bottom.Compare with the clamp arm 60 that is not in rotation calibration state, the clamp arm 60 that is in rotation calibration state is near main shaft 30.If main tapping 24 (with reference to Fig. 1) is moved upward, then rotate the cam follower 66 of the clamp arm 60 behind the calibration and cam surface 28a (with reference to Fig. 2) butt of cam 28, cam surface 29a (with reference to Fig. 2) butt of cam follower 75 and stationary cam 29.If cam follower 66 and cam follower 75 slide along each cam surface 28a, 29a respectively, then clamp arm 60 is that center rotate near the direction of main shaft 30 with back shaft 67 towards making handle part 63.As shown in Figure 3, the steel ball 85 that engages with first recess 91 is thrown off from first recess 91, and slides towards second recess 92 on the surface of back shaft 67.Steel ball 85 is compressing compression helical spring 83 when first recess 91 is thrown off, and moves slightly to handle part 63 sides of clamp arm 60.As mentioned above, back shaft 67 is fixed on the fulcrum platform 62.If handle part 63 arrives close position near main shaft 30 (position that the tool retainer 7 that is installed on the main shaft 30 is controlled), the steel ball 85 and second recess 92 that then are compressed helical spring 83 application of forces are chimeric.Produce frictional force between the steel ball 85 and second recess 92, clamp arm 60 keeps second attitude.If main tapping 24 (with reference to Fig. 1) moves downwards, cam surface 29a (with reference to Fig. 2) butt of the cam follower 75 of clamp arm 60 and stationary cam 29 then, clamp arm 60 is towards handle part 63 is rotated away from the direction of main shaft 30.Consequently, steel ball 85 engages with first recess 91.By steel ball 85 is engaged with first recess 91 and second recess 92, clamp arm 60 keeps first attitude and second attitude.
In the tool replacing apparatus 2 of first example, comprise steel ball 85, compression helical spring 83 and tube portion 81 in the inside of clamp arm 60, the back shaft 67 of fulcrum platform 62 has first recess 91 and second recess 92.Because clamp arm 60 will keep the attitude maintaining body 80 of clamp arm 60 attitudes to cover, so the smear metal that workpiece adds the generation in man-hour can not enter in the attitude maintaining body 80.Consequently, steel ball 85 can not block when sliding on back shaft 67, and the surface of steel ball 85 and back shaft 67 can be not impaired yet.Losing of clamp arm 60 can be prevented, and the rotational action of clamp arm 60 can be carried out swimmingly.The steel ball 85 that constitutes attitude maintaining body 80 is a spheroid, and first recess 91 and second recess 92 be shaped as the concavity sphere.Consequently, compare, can reduce the abrasion deformation of steel ball 85, first recess 91 and second recess 92 with the occasion that erect in the bight of any parts in steel ball 85, first recess 91 and second recess 92.The occasion that is arranged on clamp arm 60 outsides with the mechanism that will keep attitude is compared, and can improve the free degree of the shape of tool replacing apparatus 2.
The steel ball 85 of first example is equivalent to " abutting part " of the present invention, and tube portion 81 is equivalent to " supporting mechanism ", and compression helical spring 83 is equivalent to " force application mechanism ".Steel ball 85, tube portion 81 and compression helical spring 83 are equivalent to " holding section " of the present invention.First recess 91 is equivalent to " first is stuck portion ", and second recess 92 is equivalent to " second is stuck portion ".Storehouse seat 41 is equivalent to " storehouse body ".
With reference to Fig. 5 the tool replacing apparatus of the present invention's second example is described.The difference of the tool replacing apparatus 2 of the tool replacing apparatus of second example and first example only is to keep the structure of the attitude maintaining body 280 of clamp arm 60 attitudes.In the tool replacing apparatus of second example, the back shaft 267 that is fixed on the fulcrum platform 62 comprises attitude maintaining body 280 integratedly.In attitude maintaining body 280, the axis direction of back shaft 267 is consistent with the application of force direction of compression helical spring 283.Because the structure beyond the attitude maintaining body 280 is identical with first example, so the identical symbol of mark and omit explanation.
Structure to attitude maintaining body 280 describes.As shown in Figure 5, in second example, attitude maintaining body 280 forms as one with back shaft 267.Clamp arm 60 is covered with attitude maintaining body 280.Attitude maintaining body 280 comprises: two steel ball 285a, 285b; Steel ball support portion 281; Compression helical spring 283; And the first recess 291a, 291b and the second recess 292a, 292b.The first recess 291a, 291b and the second recess 292a, 292b are positioned on the side of rotation section 290 described later.
Bottom outlet 287a being arranged and bottom outlet 287b is arranged in columned steel ball support portion 281 roughly in the face of having on the side 282 of rotation section 290.There is bottom outlet 287a to support steel ball 285a, has bottom outlet 287b to support steel ball 285b.The part of steel ball 285a, 285b 282 is given prominence to from the side.Having at the center of the side 286 relative with back shaft 267 of steel ball support portion 281 has bottom outlet 288.Taken in compression helical spring 283 in the inside that bottom outlet 288 is arranged.Be configured in back shaft 267 and have compression helical spring 283 between the bottom surface of bottom outlet 288 towards the rotation section 290 sides to steel ball support portion 281 application of forces.End in back shaft 267 sides of steel ball support portion 281 has notch part 289.On the side of the steel ball support portion of the back shaft 267 that is fixed in fulcrum platform 62 281 sides, has rotation restrictor 268.Rotation restrictor 268 is outstanding from the side of steel ball support portion 281 sides of back shaft 267, is and notch part 289 corresponding shape.Rotation restrictor 268 engages with notch part 289, thus the rotation of restriction steel ball support portion 281.Consequently, steel ball support portion 281 only can move back and forth on the axis direction of back shaft 267.
It is roughly cylindric that rotation section 290 is.Clamp arm fixed part 293 with screwed hole from the rotation section 290 side face outstanding.On the position corresponding of clamp arm 60, has fixing hole (not shown) with clamp arm fixed part 293.In the fixing hole of clamp arm 60, insert clamp arm fixed part 293 and use bolting, thereby clamp arm 60 and rotation section 290 are fixed into one.Fulcrum platform 62 supports clamp arm 60 rotationally, and clamp arm 60 covers attitude maintaining body 280.On the side 294 of the steel ball support portion of rotation section 290 281 sides, have the first recess 291a, 291b and the second recess 292a, 292b.The shape of each recess 291a, 291b, 292a, 292b is corresponding with the sphere of steel ball 285a, 285b.Engage with the first recess 291a and steel ball 285b engages with the first recess 291b by steel ball 285a, clamp arm 60 keeps first attitude that handle part 63 is left from main shaft 30.Engage with the second recess 292a and steel ball 285b engages with the second recess 292b by steel ball 285a, clamp arm 60 keeps making second attitude of handle part 63 near main shafts 30.
The rotational action of clamp arm 60 and the maintenance of attitude are described.Under the state that handle part 63 leaves from main shaft 30, steel ball 285a engages with the first recess 291a, and steel ball 285b engages with the first recess 291b.Owing to producing frictional force between the steel ball 285a and the first recess 291a and between the steel ball 285b and the first recess 291b, so clamp arm 60 keeps first attitude.If clamp arm 60 from then on state begins towards handle part 63 is rotated near the direction of main shaft 30, then be fixed on the right side of rotation section 290 from Fig. 5 on the clamp arm 60 and see and clockwise rotate.If rotate rotation section 290, then steel ball 285a, 285b slide on the side 294 in rotation section 290 when back shaft 267 sides push steel ball support portion 281.If the position that handle part 63 arrives near main shaft 30, then the steel ball 285a and the second recess 292a are chimeric, and the steel ball 285b and the second recess 292b are chimeric.Owing to producing frictional force between the steel ball 285a and the second recess 292a and between the steel ball 285b and the second recess 292b, so clamp arm 60 keeps second attitude.The attitude of clamp arm 60 from second attitude when first attitude changes too, steel ball 285a, the 285b that engages with the second recess 292a, 292b slides on the side 294 of rotation section 290, and chimeric with the first recess 291a, 291b.Attitude maintaining body 280 plays a role with the central shaft of back shaft 267 as the rotational action of clamp arm 60, and keeps first attitude and second attitude of clamp arm 60.
In the tool replacing apparatus of second example, fulcrum platform 62 comprises: steel ball 285a, 285b; Steel ball support portion 281; And compression helical spring 283.Rotation section 290 has the first recess 291a, 291b and the second recess 292a, 292b.Rotation section 290 and clamp arm 60 are fixed into one.Because clamp arm 60 will keep the attitude maintaining body 280 of clamp arm 60 attitudes to cover, so smear metal can not enter in the attitude maintaining body 280.Consequently, losing of clamp arm 60 can be prevented, and the rotational action of clamp arm 60 can be carried out swimmingly.The occasion that is positioned at clamp arm 60 outsides with the mechanism that keeps attitude is compared, and can improve the free degree of the shape of tool replacing apparatus.
The present invention is not limited to above-mentioned each example, can implement with various forms.With reference to Fig. 6 and Fig. 7 the variation of above-mentioned example is described.The variation 1 shown in Figure 6 and the difference of second example are, constitute the attitude maintaining body under the situation of not using steel ball.The variation 2 shown in Figure 7 and the difference of first example are the part number and the equipping position of attitude maintaining body 480.For the structure position identical with first and second example, the symbol that mark is identical with first and second example omits or simplifies its explanation.
The attitude maintaining body 380 that tool replacing apparatus had to variation 1 describes.As shown in Figure 6, attitude maintaining body 380 comprises: move back and forth portion 381, compression helical spring 283, first slot part 391 and second slot part 392.First slot part 391 and second slot part 392 are positioned on the rotation section 390.Roughly columned move back and forth portion 381 in the face of having on the side 386 of back shaft 267 bottom outlet 388 is arranged.In being arranged, taken in bottom outlet 388 compression helical spring 283.On the end in the face of a side of back shaft 267 of the portion of moving back and forth 381, has notch part 389.Engage the rotation that limits the portion of moving back and forth 381 by notch part 389 with the rotation restrictor 268 of back shaft 267.Attitude maintaining body 380 does not comprise steel ball, and comprises claw 387.Claw 387 is outstanding from the side in the face of rotation section 390 of the portion of moving back and forth 381.Corresponding with the position of claw 387, have first slot part 391 and second slot part 392 facing on the side 394 that moves back and forth portion 381 of rotation section 390.Clamp arm 60 (with reference to Fig. 2) and rotation section 390 are fixed into one by clamp arm fixed part 393.Consequently, rotation section 390 cooperates the rotational action of clamp arm 60 and rotates.Engage with first slot part 391 by claw 387, clamp arm 60 keeps first attitude, engages with second slot part 392 by claw 387, and clamp arm 60 keeps second attitude.
Distortion of image example 1 like this, the shape of attitude maintaining body can be done suitable change, also can keep the attitude of clamp arm 60 under the situation of not using steel ball.In variation shown in Figure 61, claw 387 is the shape that erect in the bight, but also can make the shape that does not erect in semicircle shape or bight such as hemispherical.The cross section that is shaped as of first slot part 391 and second slot part 392 is trapezoidal, but also surface smoothing ground can be formed.A plurality of claws 387 and first slot part 391 and second slot part 392 corresponding with claw 387 also can be set.The claw 387 of variation 1 is equivalent to " abutting part " of the present invention, moves back and forth portion 381 and back shaft 267 is equivalent to " supporting mechanism ", and compression helical spring 283 is equivalent to " force application mechanism ".Claw 387, move back and forth portion 381, back shaft 267 and compression helical spring 283 and be equivalent to " holding section " of the present invention.First slot part 391 is equivalent to " first is stuck portion ", and second slot part 392 is equivalent to " second is stuck portion ".Clamp arm 60 and rotation section 390 are equivalent to " clamp arm ".
The attitude maintaining body 480 that tool replacing apparatus had to variation 2 describes.As shown in Figure 7, in attitude maintaining body 480, two support portion 62b are supported the two ends of back shaft 467.Comprise compression helical spring 83 in the inside of support portion 62b.Compression helical spring 83 towards with the direction of the axis normal of back shaft 467 to steel ball 85 application of forces.Columned back shaft 467 is fixed into one by clamp arm fixed part 493 and clamp arm 60.On the side face of back shaft 467 self, have first recess 491 and second recess 492.Back shaft 467 cooperates the rotational action of clamp arm 60 and rotates.If back shaft 467 rotates and steel ball 85 is engaged with first recess 491, then clamp arm 60 keeps first attitude.If back shaft 467 rotates and steel ball 85 is engaged with second recess 492, then clamp arm 60 keeps second attitude.In the attitude maintaining body 480 of variation 2, two support portion 62b comprise respectively: steel ball 85, compression helical spring 83, first recess 491 and second recess 492.
Distortion of image example 2 like this, the number that constitutes steel ball 85, compression helical spring 83, first recess 491 and second recess 492 etc. of attitude maintaining body is not limited to one.Suitable change also can be done in the position that sets the attitude maintaining body, the attitude maintaining body can be provided on the position in addition, the position shown in above-mentioned example and the variation.As other example, also can be out of shape attitude maintaining body 280 shown in Figure 5 and make following structure: constitute part and the compression helical spring that the rotation section 290 of rotating integratedly comprises steel ball, supports steel ball with clamp arm 60, back shaft 267 has first recess and second recess.
Claims (8)
1. tool replacing apparatus comprises:
The main tapping that the main shaft of lathe is rotatably supported,
The pillar that described main tapping can be supported up or down,
Can with an axis be the center be fixed on with being rotated calibration storehouse body on the described pillar,
One end have the handle part of the instrument of controlling and be a plurality of clamp arms of being positioned at described storehouse body periphery radially and
Support described clamp arm and be positioned at the fulcrum platform of described storehouse body periphery,
Is that rotate at the center by the described clamp arm of rotation behind the calibration with described fulcrum platform, and described handle part moves back and forth between near the close position of described main shaft and the retreating position that leaves from described main shaft,
It is characterized in that, also comprise:
Holding section, this holding section are positioned on the described clamp arm and with described fulcrum decometer closes;
First is stuck portion, and this first portion of being stuck is positioned on the described fulcrum platform, and moves to first attitude that keeps described clamp arm under the state of described retreating position at described handle part by engaging with described holding section; And
Second is stuck portion, and this second portion of being stuck is positioned on the described fulcrum platform, and moves to described second attitude near the described clamp arm of maintenance under the state of position by engaging with described holding section at described handle part,
Described holding section, described first is stuck portion for described clamp arm or described fulcrum platform and described second portion of being stuck covers.
2. tool replacing apparatus comprises:
The main tapping that the main shaft of lathe is rotatably supported,
The pillar that described main tapping can be supported up or down,
Can with an axis be the center be fixed on with being rotated calibration storehouse body on the described pillar,
One end have the handle part of the instrument of controlling and be a plurality of clamp arms of being positioned at described storehouse body periphery radially and
Support described clamp arm and be positioned at the fulcrum platform of described storehouse body periphery,
Is that rotate at the center by the described clamp arm of rotation behind the calibration with described fulcrum platform, and described handle part moves back and forth between near the close position of described main shaft and the retreating position that leaves from described main shaft,
It is characterized in that, also comprise:
Holding section, this holding section are positioned on the described fulcrum platform and with described clamp arm and engage;
First is stuck portion, and this first portion of being stuck is positioned on the described clamp arm, and moves to first attitude that keeps described clamp arm under the state of described retreating position at described handle part by engaging with described holding section; And
Second is stuck portion, and this second portion of being stuck is positioned on the described clamp arm, and moves to described second attitude near the described clamp arm of maintenance under the state of position by engaging with described holding section at described handle part,
Described holding section, described first is stuck portion for described clamp arm or described fulcrum platform and described second portion of being stuck covers.
3. tool replacing apparatus as claimed in claim 1 is characterized in that,
Described holding section comprises:
With described first be stuck abutting part that portion and second is stuck portion's butt,
Support described abutting part so that this abutting part can towards described first be stuck supporting mechanism that portion and described second portion of being stuck advance, retreat and
Be positioned on the described supporting mechanism and be stuck portion and described second and be stuck the force application mechanism of portion the described abutting part application of force towards described first.
4. tool replacing apparatus as claimed in claim 2 is characterized in that,
Described holding section comprises:
With described first be stuck abutting part that portion and second is stuck portion's butt,
Support described abutting part so that this abutting part can towards described first be stuck supporting mechanism that portion and described second portion of being stuck advance, retreat and
Be positioned on the described supporting mechanism and be stuck portion and described second and be stuck the force application mechanism of portion the described abutting part application of force towards described first.
5. tool replacing apparatus as claimed in claim 1 is characterized in that,
The back shaft that supports described clamp arm is arranged on the described fulcrum platform,
Described first is stuck portion and described second portion of being stuck is arranged on the outer peripheral face of described back shaft,
Described holding section is configured in the inside of described clamp arm,
Described holding section comprises:
With described first be stuck abutting part that portion and second is stuck portion's butt,
Support described abutting part so that this abutting part can towards described first be stuck supporting mechanism that portion and described second portion of being stuck advance, retreat and
Be positioned on the described supporting mechanism and be stuck portion and described second and be stuck the force application mechanism of portion the described abutting part application of force towards described first,
The application of force direction of described force application mechanism is the direction with the axis normal of described back shaft.
6. tool replacing apparatus as claimed in claim 3 is characterized in that,
The back shaft that is used to support described clamp arm is arranged on described fulcrum platform,
The application of force direction of described force application mechanism is the direction along the axis of described back shaft.
7. tool replacing apparatus as claimed in claim 4 is characterized in that,
The back shaft that is used to support described clamp arm is arranged on described fulcrum platform,
The application of force direction of described force application mechanism is the direction along the axis of described back shaft.
8. as each described tool replacing apparatus in the claim 3 to 7, it is characterized in that,
Described abutting part is a spheroid,
Described first is stuck portion and described second portion of being stuck is the concavity sphere.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-072120 | 2007-03-20 | ||
| JP2007072120A JP4962069B2 (en) | 2007-03-20 | 2007-03-20 | Tool changer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101269470A CN101269470A (en) | 2008-09-24 |
| CN101269470B true CN101269470B (en) | 2010-08-18 |
Family
ID=39903173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810085820XA Active CN101269470B (en) | 2007-03-20 | 2008-03-14 | Tool replacing apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4962069B2 (en) |
| CN (1) | CN101269470B (en) |
| TW (1) | TW200920542A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101017845B1 (en) | 2008-11-12 | 2011-03-04 | (주)유지인트 | automatic tool changer |
| JP5429221B2 (en) * | 2011-03-31 | 2014-02-26 | ブラザー工業株式会社 | Tool changer and machine tool provided with tool changer |
| JP6136119B2 (en) * | 2012-01-30 | 2017-05-31 | ブラザー工業株式会社 | Machine Tools |
| CN102922350B (en) * | 2012-11-09 | 2015-04-08 | 安徽池州家用机床股份有限公司 | Automatic cutter replacing device |
| JP2015104766A (en) * | 2013-11-29 | 2015-06-08 | ブラザー工業株式会社 | Tool changer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290615A1 (en) * | 1986-10-30 | 1988-11-17 | Fanuc Ltd. | Tool enchanger for machine tool |
| US6773382B2 (en) * | 2001-12-06 | 2004-08-10 | Sankyo Manufacturing Co., Ltd. | Automatic tool-exchanging apparatus |
| CN1810444A (en) * | 2005-01-28 | 2006-08-02 | 兄弟工业株式会社 | Instrument exchanging decice |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0780109B2 (en) * | 1988-06-30 | 1995-08-30 | ブラザー工業株式会社 | Automatic tool changer for machine tools |
| JP2006272473A (en) * | 2005-03-28 | 2006-10-12 | Brother Ind Ltd | Tool replacement device, control method and program |
-
2007
- 2007-03-20 JP JP2007072120A patent/JP4962069B2/en not_active Expired - Fee Related
-
2008
- 2008-03-14 CN CN200810085820XA patent/CN101269470B/en active Active
- 2008-03-18 TW TW097109537A patent/TW200920542A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0290615A1 (en) * | 1986-10-30 | 1988-11-17 | Fanuc Ltd. | Tool enchanger for machine tool |
| US6773382B2 (en) * | 2001-12-06 | 2004-08-10 | Sankyo Manufacturing Co., Ltd. | Automatic tool-exchanging apparatus |
| CN1810444A (en) * | 2005-01-28 | 2006-08-02 | 兄弟工业株式会社 | Instrument exchanging decice |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4962069B2 (en) | 2012-06-27 |
| TW200920542A (en) | 2009-05-16 |
| JP2008229768A (en) | 2008-10-02 |
| TWI346024B (en) | 2011-08-01 |
| CN101269470A (en) | 2008-09-24 |
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