WO2017022118A1 - チャック装置 - Google Patents
チャック装置 Download PDFInfo
- Publication number
- WO2017022118A1 WO2017022118A1 PCT/JP2015/072339 JP2015072339W WO2017022118A1 WO 2017022118 A1 WO2017022118 A1 WO 2017022118A1 JP 2015072339 W JP2015072339 W JP 2015072339W WO 2017022118 A1 WO2017022118 A1 WO 2017022118A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- axial
- chuck body
- chuck
- replacement member
- angle
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/113—Retention by bayonet connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
- B23B31/201—Characterized by features relating primarily to remote control of the gripping means
- B23B31/207—Characterized by features relating primarily to remote control of the gripping means using mechanical transmission through the spindle
- B23B31/2072—Axially moving cam, fixed jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/04—Adapters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
- B23B31/4006—Gripping the work or tool by a split sleeve
- B23B31/4033—Gripping the work or tool by a split sleeve using mechanical transmission through the spindle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/10—Expanding
- Y10T279/1004—Collet type
- Y10T279/1008—Fixed jaws and moving cam
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17888—Tang offset within socket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/32—Means to prevent jaw loosening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
- Y10T279/3406—Adapter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T409/00—Gear cutting, milling, or planing
- Y10T409/30—Milling
- Y10T409/309352—Cutter spindle or spindle support
- Y10T409/309408—Cutter spindle or spindle support with cutter holder
- Y10T409/309464—Cutter spindle or spindle support with cutter holder and draw bar
Definitions
- the present invention relates to a chuck device used when gripping a workpiece on a lathe or the like.
- Patent Document 1 discloses a chuck device including a fitting body (chuck portion) that can be replaced according to the type of workpiece.
- the fitting body is detachably disposed on the chuck base.
- a first cylinder device and a second cylinder device are used to separate the fitting body from the chuck base.
- an anti-shrinkage disc spring is used to bring the fitting body close to the chuck base.
- the urging force (elastic restoring force) of the anti-contraction disc spring is accumulated in the anti-contraction disc spring by driving the first cylinder device when the fitting body is removed from the chuck base.
- An object of the present invention is to provide a chuck device that has a simple structure and can easily replace an exchange member.
- a chuck device includes a chuck body, an exchange member that is replaceably disposed on the chuck body, and a recess formed in one of the chuck body and the exchange member, and is arranged in a circumferential direction.
- An axial direction regulating mechanism that regulates axial shakiness of the exchange member relative to the chuck body by inserting the radial convex portion into the circumferential groove, and the chuck body and the exchange member
- An axial recess that is disposed on one side and is recessed in the axial direction, and an axial projection that is disposed on the other of the chuck body and the replacement member and can project in the axial direction.
- the exchange member is rotated by a predetermined angle in the circumferential direction in a state where the axial rattling of the exchange member with respect to the chuck body is restricted by the axial restriction mechanism, and the radial protrusion is formed in the circumferential groove.
- a circumferential direction regulating mechanism that regulates the backlash of the exchange member in the circumferential direction with respect to the chuck body by inserting the axial convex portion into the axial concave portion.
- the radial projection is inserted into the circumferential groove by bringing the replacement member into contact with the chuck body from the axial direction.
- the insertion restricts the shakiness of the exchange member relative to the chuck body in the axial direction.
- the replacement member is rotated by a predetermined angle in the circumferential direction. That is, the radial protrusion is slid in the circumferential groove.
- the axial convex portion is inserted into the axial concave portion. The insertion restricts the rattling of the replacement member with respect to the chuck body in the circumferential direction.
- the structure of the chuck device is simplified.
- the replacement member can be easily replaced with respect to the chuck body.
- FIG. 1 is a perspective view of a chuck device according to an embodiment of the chuck device of the present invention.
- FIG. 2 is an exploded perspective view of the chuck device.
- FIG. 3 is an axial sectional view of the chuck device.
- FIG. 4 is an enlarged view in the frame IV of FIG.
- FIG. 5A is a cross-sectional view in the Va-Va direction of FIG.
- FIG. 5B is a cross-sectional view in the Vb-Vb direction of FIG.
- FIG. 5C is a cross-sectional view in the Vc-Vc direction of FIG.
- FIG. 7B is a cross-sectional view in the Vb-Vb direction of FIG. 3 in the same case.
- FIG. 7C is a cross-sectional view in the Vc-Vc direction of FIG. 3 in the same case.
- FIG. 8 is an enlarged view inside the frame VIII of FIG.
- FIG. 1 is a perspective view of the chuck device of this embodiment.
- FIG. 2 is an exploded perspective view of the chuck device.
- FIG. 3 shows an axial sectional view of the chuck device.
- FIG. 4 shows an enlarged view in the frame IV of FIG.
- FIG. 5A shows a cross-sectional view in the Va-Va direction of FIG.
- FIG. 5B shows a cross-sectional view in the Vb-Vb direction of FIG.
- FIG. 5C shows a cross-sectional view in the Vc-Vc direction of FIG.
- FIG. 6 shows an enlarged view in the frame VI of FIG.
- the peripheral wall member 32 is omitted.
- the angle of the workpiece holding member 3 with respect to the chuck body 2 shown in FIGS. 1 to 3, 5 (a) to 5 (c), and 6 is a lock angle C. Further, the angle of the workpiece holding member 3 with respect to the chuck body 2 shown in FIG.
- the configuration of the chuck device 1 when the workpiece holding member 3 is attached to the chuck body 2 and the workpiece holding member 3 is at the lock angle C will be described.
- the chuck device 1 of this embodiment is a so-called inner diameter collet chuck device.
- the chuck device 1 includes a chuck body 2, a work holding member 3, an axial direction restriction mechanism 4, a circumferential direction restriction mechanism 5, and two bolts 6.
- the work holding member 3 is included in the concept of “exchange member” of the present invention.
- the chuck body 2 is attached to the right end (tip) of the main shaft (not shown) of the lathe. As shown in FIG. 3, the chuck body 2 can rotate around the axis A of the main shaft extending in the left-right direction.
- the chuck body 2 includes a base body 20, a draw bar 21, and three bolts 22.
- the base body 20 has a stepped disk shape.
- the base body 20 includes a through-hole 20a, a first member 200, and a second member 201.
- the through hole 20a penetrates the center of the base body 20 in the left-right direction.
- the second member 201 is disposed on the right surface of the first member 200 (the surface on the workpiece holding member 3 side).
- the second member 201 has a smaller diameter than the first member 200.
- a tapered surface 201c that is sharp from the right side to the left side is disposed on the inner peripheral surface of the second member 201.
- the draw bar 21 has a round bar shape extending in the left-right direction.
- the draw bar 21 is inserted through the through hole 20a.
- the draw bar 21 is movable in the left-right direction with respect to the base body 20.
- the draw bar 21 includes a recess 210 and a plurality of tooth portions 211.
- the recess 210 is disposed at the right end of the draw bar 21.
- the recess 210 has a bottomed cylindrical shape that opens to the right.
- the plurality of tooth portions 211 are disposed on the inner peripheral surface of the mouth edge of the recess 210.
- the plurality of tooth portions 211 are arranged in the circumferential direction.
- the three bolts 22 are respectively screwed to the right surface 201b of the second member 201 in a closed state.
- the right surface 201b is included in the concept of the “axial end surface” of the present invention.
- the three bolts 22 have central angles (specifically, central angles about the axis A when the chuck device 1 is viewed from the axial direction (right side or left side). .) They are spaced 120 ° apart.
- the bolt 22 includes a body portion 221 and a head portion 220.
- the head 220 has a larger diameter than the body 221.
- the work holding member 3 is attached to the right end (tip) of the chuck body 2.
- the workpiece holding member 3 can be exchanged for the chuck body 2 in accordance with the type of the workpiece W shown in FIG.
- the work holding member 3 includes an abutment 30, a collet member 31, a peripheral wall member 32, a guide member 33, and a shaft 34.
- the collet member 31 includes a collet part 310 and a bottom wall part 311.
- the bottom wall portion 311 has a disk shape.
- a left surface (surface on the chuck body 2 side) 311 a of the bottom wall portion 311 is in contact with a right surface 201 b of the second member 201.
- the left surface 311a is included in the concept of “bottom surface” of the present invention.
- the bottom wall portion 311 includes three head long holes 311b, three body long holes 311c, a first through hole 311d, and three second through holes 311e. And a boss portion 311f.
- the boss portion 311 f protrudes to the left from the radial center of the bottom wall portion 311.
- the outer peripheral surface of the boss portion 311f is a tapered surface that sharpens from the right side toward the left side.
- the first through hole 311d penetrates the center in the radial direction of the bottom wall portion 311 in the left-right direction.
- the three second through holes 311 e are arranged with a central angle of 120 ° apart.
- the 2nd through-hole 311e has penetrated the bottom wall part 311 in the left-right direction.
- the trunk long hole 311c is recessed in the left surface 311a.
- the trunk long hole 311c has a partial arc shape.
- the trunk hole 311c extends in the circumferential direction over a central angle of 30 ° between the release angle B and the lock angle C.
- the central angle of 30 ° is included in the concept of “predetermined angle” of the present invention.
- the radial width of the trunk long hole 311c is set so that the trunk 221 of the bolt 22 can pass and the head 220 cannot pass.
- the direction from the release angle B toward the lock angle C is defined as the lock direction Y1, and the opposite direction is defined as the release direction Y2.
- a head insertion portion 311ca through which the head 220 can pass is formed at the lock direction end of the trunk hole 311c.
- the head long hole 311 b is recessed in the right surface of the bottom wall portion 311.
- the head long hole 311b is connected to the right side of the trunk long hole 311c.
- the head long hole 311b has a partial arc shape.
- the head long hole 311b extends in the circumferential direction over a central angle of 30 ° between the release angle B and the lock angle C, similarly to the trunk long hole 311c.
- the radial width of the head long hole 311b is set so that the head 220 of the bolt 22 can pass through.
- the collet part 310 has a cylindrical shape extending in the left-right direction.
- the collet portion 310 protrudes on the right side from the edge of the first through hole 311d on the right surface of the bottom wall portion 311.
- a tapered surface 310a that is pointed from the right side toward the left side is disposed.
- three slits S are formed in the collet portion 310 so as to be separated from each other by a central angle of 120 °.
- the slit S extends in the left-right direction. For this reason, the collet part 310 can be expanded in diameter.
- the peripheral wall member 32 has a cylindrical shape.
- the right end of the peripheral wall member 32 is mounted on the bottom wall portion 311.
- the inner peripheral surface 320 of the peripheral wall member 32 is in contact with the outer peripheral surface 201 a of the second member 201.
- the peripheral wall member 32 includes three plunger fixing holes 321.
- the three plunger fixing holes 321 are arranged with a central angle of 120 ° apart from each other.
- the plunger fixing hole 321 penetrates the peripheral wall member 32 in the radial direction.
- the money 30 has a cylindrical shape extending in the left-right direction.
- the workpiece W comes into contact with the right end surface of the gold 30.
- a flange portion 30 a is formed at the left end of the metal 30.
- Three bolt confirmation holes 300 are formed in the flange portion 30a.
- the three bolt confirmation holes 300 are spaced apart from each other by a central angle of 120 °.
- the bolt confirmation hole 300 is connected to the right side of the end portion in the release direction of the head long hole 311 b.
- three hole sets (hole sets including a trunk long hole 311c, a head long hole 311b, and a bolt confirmation hole 300 communicating with each other) are arranged with a central angle of 120 ° apart from each other.
- bolt 22 is arrange
- the head portion 220 of the bolt 22 and the step portion between the trunk long hole 311 c and the head long hole 311 b are engaged in the left-right direction.
- the guide member 33 has a cylindrical shape.
- the guide member 33 is disposed on the radially inner side of the first through hole 311d of the bottom wall portion 311.
- the shaft 34 has a round bar shape extending in the left-right direction.
- the shaft 34 is inserted through the guide member 33 in the radial direction and the collet portion 310 in the radial direction.
- the shaft 34 is movable in the left-right direction with respect to the guide member 33 and the collet portion 310.
- the shaft 34 includes a flange portion 340 and a plurality of tooth portions 341.
- the flange portion 340 is disposed between the recess 210 of the draw bar 21 and the guide member 33.
- the plurality of tooth portions 341 are disposed on the left side of the flange portion 340.
- the plurality of tooth portions 341 are accommodated in the recess 210.
- the plurality of tooth portions 341 are arranged in the circumferential direction.
- the plurality of teeth 211 of the draw bar 21 and the plurality of teeth 341 of the shaft 34 are engaged from the left and right directions.
- a tapered surface 342 that sharpens from the right side to the left side is disposed on the outer peripheral surface of the right end of the shaft 34.
- the tapered surface 310a of the collet portion 310 and the tapered surface 342 of the shaft 34 are in contact with each other.
- the draw bar 21 When the workpiece W is gripped by the chuck device 1, the draw bar 21 is pulled to the left side. The tensile force from the draw bar 21 is transmitted to the shaft 34 via the engaging portion between the tooth portion 211 and the tooth portion 341. For this reason, the taper surface 342 moves to the left with respect to the taper surface 310a. Therefore, the collet portion 310 is deformed by expanding its diameter. The collet part 310, that is, the chuck device 1 grips the workpiece W from the radially inner side by the diameter expansion deformation.
- the axial restriction mechanism 4 includes a circumferential groove 40, three ball plungers 41, and three axial grooves 42.
- the ball plunger 41 is included in the “plunger” concept of the present invention.
- the circumferential groove 40 is recessed in the outer peripheral surface 201 a of the second member 201.
- the circumferential groove 40 has an endless ring shape extending in the circumferential direction.
- the circumferential groove 40 has a V-shaped cross section.
- the three axial grooves 42 are each recessed in the outer peripheral surface 201 a of the second member 201.
- the three axial grooves 42 are spaced apart by a central angle of 120 °.
- the axial direction groove part 42 is exhibiting the linear form extended in an axial direction.
- the groove bottom surface of the axial groove portion 42 has a planar shape.
- the axial groove 42 connects the circumferential groove 40 and the right surface 201b of the second member 201.
- the three ball plungers 41 are respectively disposed in the plunger fixing holes 321 of the peripheral wall member 32.
- the three ball plungers 41 are spaced apart by a central angle of 120 °.
- the ball plunger 41 includes a base 410 and a ball 411.
- the ball 411 is included in the concept of the “projection” of the present invention.
- the base 410 has a screw shape extending in the radial direction (the radial direction of the peripheral wall member 32).
- the base 410 is screwed into the plunger fixing hole 321.
- the ball 411 is disposed at the radially inner end of the base portion 410 (the radially inner end of the peripheral wall member 32) so as to be able to enter and exit.
- the ball 411 is urged radially inward (direction protruding from the base 410) by a spring (not shown). As shown in FIG. 6, the ball 411 is accommodated in the circumferential groove 40. As described above, when the ball 411 is accommodated in the circumferential groove portion 40, rattling of the work holding member 3 with respect to the chuck body 2 in the left-right direction (axial direction) is restricted.
- the circumferential direction regulating mechanism 5 includes three axial recesses 50 and an index plunger 51.
- the index plunger 51 is included in the “plunger” concept of the present invention.
- the three axial recesses 50 are respectively provided in the right surface 201 b of the second member 201.
- the three axial recesses 50 are spaced apart by a central angle of 120 °.
- the axial recess 50 has a straight hole shape extending in the left-right direction.
- the index plunger 51 is disposed in one second through hole 311e among the three second through holes 311e of the bottom wall portion 311. Among the three second through holes 311e, bolts 6 are screwed into the remaining two second through holes 311e, respectively.
- the index plunger 51 and the two bolts 6 are spaced apart by a central angle of 120 °.
- the index plunger 51 includes a base portion 510 and a protruding portion 511.
- the base 510 has a cylindrical shape extending in the left-right direction.
- the base 510 is connected to the right end opening of the second through hole 311 e of the bottom wall 311.
- the protruding portion 511 is inserted through the inside of the base 510 in the radial direction and the inside of the second through hole 311e in the radial direction.
- the protruding portion 511 is biased to the left side (direction protruding from the base portion 510) by a spring (not shown).
- the left end (tip) of the protrusion 511 is accommodated in the axial recess 50.
- the rattling of the protrusion 511 in the circumferential direction is restricted by the axial recess 50.
- the protrusion 511 is accommodated in the axial recess 50, so that the rattling of the workpiece holding member 3 with respect to the chuck body 2 is restricted.
- the circumferential position of the workpiece holding member 3 with respect to the chuck body 2 is determined.
- the attachment method is executed, for example, at the time of setup change. That is, it is executed when the work holding member 3 is replaced according to the type of the work W.
- the attachment method has an insertion process and a rotation process.
- the mounting method is manually performed by the operator.
- FIG. 7A shows a cross-sectional view in the Va-Va direction of FIG. 3 when the angle of the workpiece holding member with respect to the chuck body is a release angle.
- FIG. 7B shows a cross-sectional view in the Vb-Vb direction of FIG. 3 in the same case.
- FIG. 7C shows a cross-sectional view in the Vc-Vc direction of FIG. 3 in the same case.
- FIG. 8 shows an enlarged view in the frame VIII of FIG. FIG. 8 corresponds to FIG.
- the angle of the workpiece holding member 3 with respect to the chuck body 2 is set to a release angle B (see FIGS. 7A to 7C).
- the workpiece holding member 3 is arranged coaxially (on the axis A) with respect to the chuck body 2 in a state where the workpiece holding member 3 is separated to the right side with respect to the chuck body 2.
- the workpiece holding member 3 is set to an angle (release angle B) that is rotated in the release direction Y2 by a center angle of 30 ° with respect to the lock angle C.
- the bolt 22 and the head portion insertion portion 311ca of the trunk hole 311c face each other in the left-right direction.
- the axial direction groove part 42 and the ball plunger 41 oppose in the left-right direction.
- the tooth part 211 and the tooth part 341 are arranged so as to be shifted in the circumferential direction (so as not to face in the left-right direction).
- the second member 201 is relatively moved between the bottom wall portion 311 and the peripheral wall member 32 by moving the workpiece holding member 3 closer to the chuck body 2 from the right side while maintaining the release angle B.
- a recess bottomed cylindrical recess opened on the left side.
- the protruding portion 511 of the index plunger 51 is held in a state of protruding to the right from the base 510, as indicated by the one-dot chain line in FIG.
- the left surface 311a of the bottom wall portion 311 comes into contact with the right surface 201b of the second member 201.
- the inner peripheral surface 320 of the peripheral wall member 32 abuts on the outer peripheral surface 201 a of the second member 201.
- the shaft 34 is accommodated in the recess 210.
- the arbitrary tooth portion 341 passes through the gap between any pair of tooth portions 211 adjacent in the circumferential direction from the right side to the left side.
- the head 220 of the bolt 22 passes through the head insertion part 311ca of the trunk long hole 311c and is accommodated in the head long hole 311b.
- the body 221 of the bolt 22 is accommodated in the body long hole 311c.
- the ball 411 of the ball plunger 41 passes through the axial groove portion 42 and is accommodated in the circumferential groove portion 40.
- the left surface 311 a of the bottom wall portion 311 contacts the right surface 201 b of the second member 201, so that the workpiece holding member 3 is positioned in the left-right direction (axial position) with respect to the chuck body 2. ) Is determined.
- the taper surface 201 c of the second member 201 and the taper surface of the boss 311 f of the bottom wall portion 311 are in sliding contact with each other, so that the workpiece holding member 3 in the radial direction with respect to the chuck body 2 Shaking is regulated.
- the ball 411 is in elastic contact with the V-shaped right side surface (tapered surface sharpening from the right side toward the left side) of the circumferential groove 40. For this reason, the ball 411, that is, the workpiece holding member 3 is urged to the left side (direction in which the ball 411 is pressed against the chuck body 2). Accordingly, rattling of the work holding member 3 with respect to the chuck body 2 in the left-right direction is restricted.
- the inner peripheral surface 320 of the peripheral wall member 32 is in contact with the outer peripheral surface 201a of the second member 201 while the left surface 311a of the bottom wall portion 311 remains in contact with the right surface 201b of the second member 201.
- the head long hole 311b moves in the lock direction Y1 while the head 220 is housed. For this reason, the head 220 relatively moves in the head long hole 311b from the lock direction end to the release direction end.
- the head 220 and the stepped portion between the trunk long hole 311c and the head long hole 311b engage in the left-right direction.
- the operator can confirm the head 220 of the bolt 22 through the bolt confirmation hole 300.
- the trunk portion long hole 311c moves in the lock direction Y1 while the trunk portion 221 remains accommodated. For this reason, the trunk
- the ball 411 moves in the circumferential groove 40 in the lock direction Y ⁇ b> 1.
- the tooth portion 341 and the tooth portion 211 face each other in the left-right direction.
- the protruding portion 511 of the index plunger 51 slides on the right surface 201b of the second member 201 in the lock direction Y1.
- the axial recess 50 is arranged at the lock angle C on the right surface 201b of the second member 201.
- the protrusion 511 is fitted into the axial recess 50 by its own elastic restoring force.
- the protrusion 511 is accommodated in the axial recess 50, whereby the circumferential position of the workpiece holding member 3 with respect to the chuck body 2 is determined.
- the method of attaching the work holding member 3 to the chuck body 2 is executed.
- the method of removing the workpiece holding member 3 from the chuck body 2 is executed by a procedure reverse to the above attachment method.
- the removal method is performed manually by the operator in the same manner as the attachment method.
- the used work holding member 3 is removed from the chuck body 2 using the above-described removal method.
- the unused work holding member 3 is attached to the chuck body 2 using the above attachment method.
- the effect of the chuck device of this embodiment will be described.
- the work holding member 3 can be attached to and detached from the chuck body 2 manually. For this reason, it is not necessary to arrange
- FIG. Therefore, the structure of the chuck device 1 is simplified.
- the workpiece holding member 3 can be easily replaced with respect to the chuck body 2. That is, in the above mounting method, the operator first presses the work holding member 3 against the chuck body 2 (insertion process), and then twists the work holding member 3 (rotation process), so that the chuck body 2 can be easily attached. The workpiece holding member 3 can be attached. Further, in the above removal method, the operator can easily remove the workpiece holding member 3 from the chuck body 2 by first twisting the workpiece holding member 3 and then pulling the workpiece holding member 3 away from the chuck body 2. .
- the ball 411 of the axial direction regulating mechanism 4 is accommodated in the circumferential groove portion 40, so that the rattling of the workpiece holding member 3 with respect to the chuck body 2 in the left-right direction can be regulated.
- the protrusion 511 of the circumferential restriction mechanism 5 is accommodated in the axial recess 50, so that the rattling of the workpiece holding member 3 with respect to the chuck body 2 can be restricted.
- the bolt 22 shown in FIG. 2 is screwed to the second member 201 in a closed state. For this reason, it is not necessary to retighten or loosen the bolts 22 in the above attachment method and removal method. Therefore, it is not necessary to use a tool in the above attachment method and removal method.
- the workpiece holding member 3 can be positioned in stages with respect to the chuck body 2. Specifically, in the inserting step, the position in the left-right direction of the work holding member 3 with respect to the chuck body 2 can be determined. In addition, the circumferential position of the workpiece holding member 3 with respect to the chuck body 2 can be determined in the rotation process. For this reason, compared with the case where both positioning is performed simultaneously, work is simple.
- the ball plunger 41 is guided to the circumferential groove 40 in the rotation process. That is, the rattling of the ball plunger 41, that is, the workpiece holding member 3, in the left-right direction remains restricted. For this reason, the circumferential position of the workpiece holding member 3 can be easily determined without considering the shift in the horizontal position of the workpiece holding member 3. Further, according to the chuck device 1 of the present embodiment, the workpiece holding member 3 is used as the replacement member of the present invention. For this reason, the setup change operation can be performed easily and quickly.
- the ball plunger 41 is guided to the axial groove portion 42 in the insertion step. For this reason, the ball plunger 41 can be easily inserted into the circumferential groove 40.
- a commercially available ball plunger 41 is used as the radial convex portion of the present invention.
- the commercially available index plunger 51 is used as an axial direction convex part of this invention. For this reason, the installation cost of a radial direction convex part and an axial direction convex part can be reduced.
- the left surface 311a of the bottom wall portion 311 contacts the right surface 201b of the second member 201.
- the inner peripheral surface 320 of the peripheral wall member 32 abuts on the outer peripheral surface 201 a of the second member 201. For this reason, it is possible to restrict the workpiece holding member 3 from rattling in the left-right direction and the radial direction with respect to the chuck body 2 in the rotation process.
- the work holding member 3 includes a gold 30 and a collet member 31. For this reason, by exchanging the workpiece holding member 3, the workpiece W can be properly positioned and gripped in the left-right direction according to the type of the workpiece W.
- the ball plunger 41 is accommodated in the circumferential groove 40 both in the clamped state where the workpiece W is gripped and in the unclamped state where the workpiece W is not gripped.
- the index plunger 51 is accommodated in the axial recess 50.
- the protrusion 511 of the index plunger 51 is fitted into the axial recess 50 at the lock angle C in the rotation process. For this reason, it is easy for an operator to recognize that the rotation process is completed.
- two bolts 6 are disposed at positions spaced apart from the index plunger 51 in the clockwise direction and the counterclockwise direction by a central angle of 120 °. For this reason, the rotation balance of the chuck device 1 is good.
- the size relationship between the groove depth of the axial groove portion 42 and the groove depth of the circumferential groove portion 40 shown in FIGS. 6 and 8 is not particularly limited. What is necessary is just to be able to attach and detach in a state where the ball plunger 41 is fully extended.
- the groove depth of the axial groove portion 42 may be shallower than the groove depth of the circumferential groove portion 40. In this way, when the ball 411 enters the circumferential groove 40 from the axial groove 42 in the insertion step, the ball 411 protrudes from the base 410 according to the groove depth difference. For this reason, it is easy for an operator to recognize the approach.
- the extension distance (the entire circumference in the above embodiment) of the circumferential groove 40 shown in FIGS. 6 and 8 is not particularly limited. It is only necessary to extend at least between the release angle B and the lock angle C.
- the engagement mechanism (the tooth part 211 and the tooth part 341 in the above embodiment) between the draw bar 21 and the shaft 34 shown in FIG. 2 is not particularly limited. It is sufficient that the tensile force from the draw bar 21 can be transmitted to the shaft 34.
- the axial groove portion 42, the ball plunger 41, the axial concave portion 50, the bolt 22, and the hole set shown in FIG. 2 (a hole set including a trunk long hole 311c, a head long hole 311b, and a bolt confirmation hole 300).
- the center angle may be two 180 ° apart
- the center angle 90 ° may be four
- the center angle 60 ° may be six
- the like may be six.
- the number of the index plungers 51 one in the above embodiment
- the angle between the release angle B and the lock angle C in the above embodiment, the central angle is 30 °
- the axial direction groove part 42 does not need to be arrange
- the circumferential groove 40 is disposed on the outer circumferential surface 201 a of the second member 201, and the ball plunger 41 is disposed on the circumferential wall member 32.
- the arrangement relationship between the circumferential groove 40 and the ball plunger 41 is not particularly limited.
- the circumferential groove 40 may be disposed on the inner peripheral surface 320 of the peripheral wall member 32, and the ball plunger 41 may be disposed on the outer peripheral surface 201 a of the second member 201.
- the axial recess 50 is disposed on the right surface 201 b of the second member 201, and the index plunger 51 is disposed on the bottom wall portion 311.
- the arrangement relationship between the axial recess 50 and the index plunger 51 is not particularly limited.
- the axial recess 50 may be disposed on the left surface 311 a of the bottom wall portion 311, and the index plunger 51 may be disposed on the right surface 201 b of the second member 201.
- the extending direction of the main shaft A (the left-right direction in this embodiment) is not particularly limited. It may be a front-rear direction, a vertical direction, or the like.
- the kind of machine tool (lathe in this embodiment) provided with the chuck device 1 is not particularly limited. For example, a horizontal lathe, a front lathe, a vertical lathe, a single-axis lathe, a twin-axis lathe, a milling machine, a drilling machine, a milling cell, a turning center, a machining center, and the like may be used.
- chuck device 2 chuck body 20: base body 20a: through hole 200: first member 201: second member 201a: outer peripheral surface 201b: right surface (axial end surface) 201c: taper surface 21: draw bar 210: recess 211: teeth
- Bolt 220 Head portion 221: Body portion 3: Workpiece holding member (exchange member) 30: Gold 30a: Flange portion 300: Bolt confirmation hole 31: Collet member 310: Collet portion 310a: Tapered surface 311: Bottom wall Portion 311a: Left surface (bottom surface) 311b: Long hole for head portion 311c: Long hole for trunk portion 311ca: Head insertion portion 311d: First through hole 311e: Second through hole 311f: Boss portion 32: Peripheral wall member 320: Inside Peripheral surface 321: Plunger fixing hole 33: Guide member 34: Shaft 40: flange portion 341: tooth portion 342: tapered surface 4: axial restriction mechanism 40: circumferential groove portion
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Abstract
Description
まず、本実施形態のチャック装置の構成について説明する。図1に、本実施形態のチャック装置の斜視図を示す。図2に、同チャック装置の分解斜視図を示す。図3に、同チャック装置の軸方向断面図を示す。図4に、図3の枠IV内の拡大図を示す。図5(a)に、図3のVa-Va方向断面図を示す。図5(b)に、図3のVb-Vb方向断面図を示す。図5(c)に、図3のVc-Vc方向断面図を示す。図6に、図5(b)の枠VI内の拡大図を示す。なお、図5(b)においては、周壁部材32を省略する。
チャック本体2は、旋盤の主軸(図略)の右端(先端)に、取り付けられている。図3に示すように、チャック本体2は、左右方向に延在する主軸の軸A周りに、回転可能である。チャック本体2は、基体20と、ドローバー21と、三つのボルト22と、を備えている。
ワーク保持部材3は、チャック本体2の右端(先端)に、取り付けられている。ワーク保持部材3は、図3に示すワークWの種類に応じて、チャック本体2に対して交換可能である。ワーク保持部材3は、当金30と、コレット部材31と、周壁部材32と、ガイド部材33と、シャフト34と、を備えている。
軸方向規制機構4は、周方向溝部40と、三つのボールプランジャ41と、三つの軸方向溝部42と、を備えている。ボールプランジャ41は、本発明の「プランジャ」の概念に含まれる。
周方向規制機構5は、三つの軸方向凹部50と、インデックスプランジャ51と、を備えている。インデックスプランジャ51は、本発明の「プランジャ」の概念に含まれる。
次に、チャック本体に対するワーク保持部材の取付方法について説明する。取付方法は、例えば、段取り替えの際などに実行される。すなわち、ワークWの種類に応じて、ワーク保持部材3を交換する際に実行される。取付方法は、挿入工程と、回転工程と、を有している。取付方法は、作業者が手動で行う。
本工程においては、まず、図2に示すように、チャック本体2に対するワーク保持部材3の角度を、リリース角度B(図7(a)~図7(c)参照)に設定する。具体的には、チャック本体2に対してワーク保持部材3を右側に離間させた状態で、チャック本体2に対してワーク保持部材3を同軸上(軸A上)に配置する。また、ロック角度Cに対して、中心角30°だけリリース方向Y2に回転させた角度(リリース角度B)に、ワーク保持部材3を設定する。
本工程においては、チャック本体2に対するワーク保持部材3の角度を、リリース角度B(図7(a)~図7(c)参照)からロック角度C(図5(a)~図5(c)参照)に、切り替える。具体的には、ワーク保持部材3を、中心角30°だけロック方向Y1に回転させる。
次に、本実施形態のチャック装置の作用効果について説明する。本実施形態のチャック装置1によると、手動により、チャック本体2に対してワーク保持部材3を着脱することができる。このため、チャック装置1に、シリンダ装置や、当該シリンダ装置の動力源を配置する必要がない。したがって、チャック装置1の構造が簡単になる。
以上、本発明のチャック装置の実施の形態について説明した。しかしながら、実施の形態は上記形態に特に限定されるものではない。当業者が行いうる種々の変形的形態、改良的形態で実施することも可能である。
Claims (4)
- チャック本体と、
前記チャック本体に交換可能に配置される交換部材と、
前記チャック本体および前記交換部材のうち一方に凹設され、周方向に延在する周方向溝部と、前記チャック本体および前記交換部材のうち他方に配置され、径方向に突出可能な径方向凸部と、を有し、前記チャック本体に前記交換部材を軸方向から当接させ、前記周方向溝部に前記径方向凸部を挿入することにより、前記チャック本体に対する前記交換部材の軸方向のがたつきを規制する軸方向規制機構と、
前記チャック本体および前記交換部材のうち一方に配置され、軸方向に凹設される軸方向凹部と、前記チャック本体および前記交換部材のうち他方に配置され、軸方向に突出可能な軸方向凸部と、を有し、前記軸方向規制機構により前記チャック本体に対する前記交換部材の軸方向のがたつきが規制された状態で、前記交換部材を周方向に所定角度だけ回転させ、前記周方向溝部に前記径方向凸部を摺動させ、前記軸方向凹部に前記軸方向凸部を挿入することにより、前記チャック本体に対する前記交換部材の周方向のがたつきを規制する周方向規制機構と、
を備えるチャック装置。 - 前記チャック本体は、軸方向端面と、外周面と、を有し、
前記交換部材は、前記軸方向端面に対向する底面と、前記外周面に対向する内周面と、を有し、前記チャック本体に向かって開口する有底筒状であって、
前記軸方向規制機構は、前記チャック本体の前記外周面に凹設される前記周方向溝部と、前記交換部材の前記内周面から径方向内側に突出可能な前記径方向凸部と、を有し、
前記周方向規制機構は、前記チャック本体の前記軸方向端面に凹設される前記軸方向凹部と、前記交換部材の前記底面から軸方向に突出可能な前記軸方向凸部と、を有する請求項1に記載のチャック装置。 - 軸方向から見て、前記チャック本体に対して周方向に前記所定角度だけ回転させる前の前記交換部材の角度をリリース角度、前記チャック本体に対して周方向に前記所定角度だけ回転させた後の前記交換部材の角度をロック角度として、
前記軸方向規制機構は、前記チャック本体の前記外周面に凹設され、前記チャック本体の前記軸方向端面と前記周方向溝部とを軸方向に連結する軸方向溝部を有し、
前記リリース角度において、前記軸方向溝部に前記径方向凸部を摺動させることにより、前記周方向溝部に前記径方向凸部を挿入する請求項2に記載のチャック装置。 - 前記径方向凸部および前記軸方向凸部のうち、少なくとも一方は、基部と、前記基部から突出可能な突出部と、を有するプランジャである請求項1ないし請求項3のいずれかに記載のチャック装置。
Priority Applications (4)
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JP2017532334A JP6580140B2 (ja) | 2015-08-06 | 2015-08-06 | チャック装置 |
PCT/JP2015/072339 WO2017022118A1 (ja) | 2015-08-06 | 2015-08-06 | チャック装置 |
US15/750,411 US10518334B2 (en) | 2015-08-06 | 2015-08-06 | Chuck device |
CN201580081974.XA CN107848042B (zh) | 2015-08-06 | 2015-08-06 | 卡盘装置 |
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PCT/JP2015/072339 WO2017022118A1 (ja) | 2015-08-06 | 2015-08-06 | チャック装置 |
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JP (1) | JP6580140B2 (ja) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019195854A (ja) * | 2018-05-07 | 2019-11-14 | 株式会社Fuji | ワーク保持用ブラケット |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019124418A1 (de) * | 2019-09-11 | 2021-03-11 | Franz Haimer Maschinenbau Kg | Wuchtadapter für eine Wuchtvorrichtung |
US11858051B2 (en) * | 2020-03-05 | 2024-01-02 | Ojjo, Inc. | Passive locking chuck for rotary driver |
CN112091252B (zh) * | 2020-09-08 | 2022-08-05 | 中国航发贵州黎阳航空动力有限公司 | 一种利用零件内腔台阶进行装夹的压紧工装及其装夹方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4812091A (en) * | 1986-03-06 | 1989-03-14 | Sandvik Tobler S.A. | Exchange system on an irremovable machining center |
EP0418041A2 (en) * | 1989-09-12 | 1991-03-20 | Stanislav Fiala | Tool unit, in particular for finishing operations of cutting machining |
JPH03121706A (ja) * | 1989-10-03 | 1991-05-23 | Fuji Technica Inc | 替えチャックの連結装置 |
US5971682A (en) * | 1997-06-05 | 1999-10-26 | Polytool Ag | Toolholder |
JP2007152451A (ja) * | 2005-12-01 | 2007-06-21 | Alps Tool Co Ltd | 旋盤用チャック装置 |
WO2014027466A1 (ja) * | 2012-08-17 | 2014-02-20 | 長野オートメーション株式会社 | コレットチャックを備えた加工装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2526998A (en) * | 1945-01-08 | 1950-10-24 | James R Davis | Self-centering detachable coupling for machine tools |
US2801860A (en) * | 1956-10-30 | 1957-08-06 | Metal Cutting Tools Inc | Double-acting spring for pin drive and clutch drive counterbores |
CH347406A (fr) * | 1959-06-30 | 1960-06-30 | Posalux Frautschi & Monney | Dispositif permettant la mise en place et l'enlèvement rapides d'un outil sur une broche |
FR1265892A (fr) * | 1960-05-23 | 1961-07-07 | Franco Anglaise De Materiel Et | Perfectionnements apportés au montage d'outils ou de porte-outils sur des broches de machine |
US3512793A (en) * | 1967-07-11 | 1970-05-19 | Donald W Botimer | Quick change tool holder |
US3521896A (en) * | 1968-05-28 | 1970-07-28 | Masakazu Matsumoto | Chuck |
US3663028A (en) * | 1970-09-21 | 1972-05-16 | Houdaille Industries Inc | Tool holder with spring operated nut |
US5018266A (en) * | 1987-12-07 | 1991-05-28 | Megamation Incorporated | Novel means for mounting a tool to a robot arm |
US5061129A (en) * | 1990-08-01 | 1991-10-29 | The Cross Company | Clamping arrangement for a cutting tool |
JPH0570810U (ja) * | 1992-02-28 | 1993-09-24 | 理研精機株式会社 | チャック装置 |
US5667228A (en) * | 1995-06-20 | 1997-09-16 | Fabris; Mario | Quick change mandrel for an engine lathe etc |
JP4217825B2 (ja) * | 2003-03-14 | 2009-02-04 | 日立造船株式会社 | 回転工具保持装置 |
DE102010041055B4 (de) * | 2010-04-01 | 2016-12-15 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | Befestigungseinrichtung zur Befestigung eines Spannfutters an einer Drehspindel |
-
2015
- 2015-08-06 WO PCT/JP2015/072339 patent/WO2017022118A1/ja active Application Filing
- 2015-08-06 CN CN201580081974.XA patent/CN107848042B/zh active Active
- 2015-08-06 US US15/750,411 patent/US10518334B2/en active Active
- 2015-08-06 JP JP2017532334A patent/JP6580140B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4812091A (en) * | 1986-03-06 | 1989-03-14 | Sandvik Tobler S.A. | Exchange system on an irremovable machining center |
EP0418041A2 (en) * | 1989-09-12 | 1991-03-20 | Stanislav Fiala | Tool unit, in particular for finishing operations of cutting machining |
JPH03121706A (ja) * | 1989-10-03 | 1991-05-23 | Fuji Technica Inc | 替えチャックの連結装置 |
US5971682A (en) * | 1997-06-05 | 1999-10-26 | Polytool Ag | Toolholder |
JP2007152451A (ja) * | 2005-12-01 | 2007-06-21 | Alps Tool Co Ltd | 旋盤用チャック装置 |
WO2014027466A1 (ja) * | 2012-08-17 | 2014-02-20 | 長野オートメーション株式会社 | コレットチャックを備えた加工装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019195854A (ja) * | 2018-05-07 | 2019-11-14 | 株式会社Fuji | ワーク保持用ブラケット |
JP7173754B2 (ja) | 2018-05-07 | 2022-11-16 | 株式会社Fuji | ワーク保持用ブラケット |
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JP6580140B2 (ja) | 2019-09-25 |
US20180229310A1 (en) | 2018-08-16 |
CN107848042A (zh) | 2018-03-27 |
US10518334B2 (en) | 2019-12-31 |
JPWO2017022118A1 (ja) | 2018-05-24 |
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