WO2023112865A1 - 把持具の製造方法 - Google Patents
把持具の製造方法 Download PDFInfo
- Publication number
- WO2023112865A1 WO2023112865A1 PCT/JP2022/045541 JP2022045541W WO2023112865A1 WO 2023112865 A1 WO2023112865 A1 WO 2023112865A1 JP 2022045541 W JP2022045541 W JP 2022045541W WO 2023112865 A1 WO2023112865 A1 WO 2023112865A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- master
- jaw
- jaws
- central axis
- sliding direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
-
- 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
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/16045—Jaws movement actuated by screws and nuts or oblique racks
- B23B31/1605—Details of the jaws
- B23B31/16054—Form of the jaws
-
- 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
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/16233—Jaws movement actuated by oblique surfaces of a coaxial control rod
- B23B31/16237—Details of the jaws
- B23B31/16241—Form of the jaws
-
- 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
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/1627—Details of the jaws
- B23B31/16275—Form of the jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/009—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding profiled workpieces using a profiled grinding tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B1/00—Vices
- B25B1/06—Arrangements for positively actuating jaws
- B25B1/10—Arrangements for positively actuating jaws using screws
- B25B1/103—Arrangements for positively actuating jaws using screws with one screw perpendicular to the jaw faces, e.g. a differential or telescopic screw
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B1/00—Vices
- B25B1/24—Details, e.g. jaws of special shape, slideways
- B25B1/2405—Construction of the jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
- B25B5/00—Clamps
- B25B5/16—Details, e.g. jaws, jaw attachments
- B25B5/163—Jaws or jaw attachments
-
- 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
- B23B2231/34—Jaws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/072—Grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2260/00—Details of constructional elements
- B23B2260/132—Serrations
-
- 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
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/28—Finishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/30—Milling straight grooves, e.g. keyways
Definitions
- the present invention relates to a method of manufacturing a gripper that grips a workpiece with a top jaw attached to each master jaw by sliding a plurality of master jaws toward the central axis.
- a device (gripping tool) that grips a workpiece when performing machining while rotating the workpiece on a lathe or the like includes, for example, a chuck.
- the chuck is provided on the front surface of the chuck body and consists of a master jaw that slides in the radial direction, and a top jaw that is attached to each master jaw and grips the workpiece.
- serrations continuously unevenness with a sawtooth cross section
- these serrations mesh with each other and are brought into close contact, thereby fixing the top jaw to the master jaw in a state of being positioned with high accuracy in the radial direction.
- the gripping surface of the top jaw is formed (on-machine forming) while the top jaw is attached to the master jaw, even if the top jaw is removed and reattached to the master jaw, the workpiece gripping accuracy will drop slightly. In many cases, it is within the allowable range.
- each master jaw, and the parts that slide the master jaws in the radial direction are manufactured as individual parts, even if they are the same parts, there are variations in the part dimensions. Therefore, when these parts are assembled, the positions of the serrations and the positions of the positioning portions in the extending direction of the serrations are different for each master jaw due to accumulated errors in the dimensions of each part.
- each top jaw is designed to compensate for the dimensional deviation of each different master jaw. Molded in different dimensions. Therefore, if the top jaw is attached to the master jaw of a chuck different from the one that is molded on the machine, the gripping accuracy will greatly deteriorate beyond the allowable range in most cases. Moreover, even if the chuck is mounted on the master jaw of the same chuck as that for on-machine molding, if the master jaw is mounted on a different position, the gripping accuracy is greatly deteriorated.
- top jaws with on-machine formed gripping surfaces are not interchangeable. Even if the same workpiece is machined, a set of top jaws is required for each chuck. It is necessary to manage whether it is for Master Joe.
- the present invention has been made in view of this point, and its main purpose is to provide a method of manufacturing a gripper that can ensure compatibility of top jaws.
- a plurality of master jaws mounted on the front surface of a gripper main body are slid toward the central axis, respectively, so that the center of the work is aligned with the central axis.
- FIG. 1 is a cross-sectional view schematically showing the configuration of a chuck according to a first embodiment of the invention.
- FIG. 2 is a perspective view showing part of the chuck.
- FIG. 3 is a perspective view showing the configuration of the T-nut.
- FIG. 4 is a perspective view showing the structure of the top jaw.
- FIG. 5 is a cross-sectional view for explaining the method of manufacturing the chuck.
- FIG. 6 is a perspective view explaining the method of manufacturing the chuck.
- FIG. 7 is a perspective view explaining a serration processing step.
- FIG. 8 is a perspective view explaining the method of manufacturing the chuck.
- FIG. 9 is a perspective view explaining a key groove machining process.
- FIG. 1 is a cross-sectional view schematically showing the configuration of a chuck according to a first embodiment of the invention.
- FIG. 2 is a perspective view showing part of the chuck.
- FIG. 3 is a perspective view showing the configuration of the T-nut.
- FIG. 10 is a cross-sectional view schematically showing the configuration of a centering vise according to the second embodiment of the invention.
- FIG. 11 is a perspective view schematically showing the configuration of the centering vise.
- FIG. 12 is a sectional view showing part of the centering vise.
- FIG. 13 is a perspective view explaining a method of manufacturing the centering vise.
- FIG. 14 is a perspective view explaining a serration processing step.
- FIG. 15 is a perspective view showing a part of the configuration of the chuck in the modified example of the first embodiment.
- FIG. 16 is a perspective view showing the structure of the top jaw.
- FIG. 1 is a cross-sectional view schematically showing the configuration of a chuck (gripping tool) according to a first embodiment of the present invention.
- a chuck body (an example of a gripper body) 10 has a plurality of (three in this embodiment) master jaws 20 radially arranged at regular intervals.
- a top jaw 30 is detachably attached to the master jaw 20 with a bolt 60 via a T nut (connecting member) 40 shown in FIG.
- a plunger 50 that slides in the direction of the central axis J is incorporated in the chuck body 10 .
- each master jaw 20 slides toward the central axis J in the slide direction (direction A in the figure).
- the workpiece is gripped by the gripping surface 33 of the top jaw 30 attached to the master jaw 20 .
- serrations 21 are formed on the surface of the master jaw 20 so as to extend in the direction perpendicular to the sliding direction (direction B in the figure).
- the serrations 21 are composed of a group of linear protrusions and linear recesses each of which has a continuous cross-sectional shape and substantially triangular protrusions and recesses.
- the master jaw 20 is formed with a groove portion 22 which has a substantially T-shaped cross section and extends in the sliding direction (direction A in the figure).
- the serrations 21 formed on the surface of the master jaw 20 serve as a "first positioning portion” that determines the distance from the central axis J of the top jaw 30 when the top jaw 30 is attached to the master jaw 20. Equivalent to. Further, the groove portion 22 formed in the master jaw 20 corresponds to a "second positioning portion” that determines the vertical position of the top jaw 30 with respect to the sliding direction when the top jaw 30 is attached to the master jaw 20. .
- the T nut 40 is made of a prismatic member having a substantially T-shaped cross section, and has a wide portion 41 and a narrow portion 42 .
- the narrowed portion 42 of the T-nut 40 is inserted along the groove portion 22 of the master jaw 20 .
- the top jaw 30 has serrations 31 on the surface that contacts the master jaw 20 so as to extend in the direction (B direction in the drawing) perpendicular to the sliding direction (direction A in the drawing). formed.
- the serrations 31 are formed in accordance with the serrations 21 formed on the master jaw 20, and are positioned in the sliding direction of the top jaw 30 and in the direction of the central axis J by closely meshing with each other. This determines the distance from the central axis J of the gripping surface 33 .
- top jaw 30 is formed with a key groove 32 extending in the sliding direction. Positioning is done perpendicular to the direction. This determines the position of the gripping surface 33 in the direction perpendicular to the sliding direction.
- the manufacturing method of the chuck (gripping tool) according to the present embodiment includes finishing the above-described first positioning portion (serration 21) and second positioning portion (groove portion 22) on the master jaw 20. Characterized by
- a plurality of master jaws 20 are attached to the chuck body 10 so as to be slidable toward the central axis J.
- plungers 50 that are connected to the master jaws 20 and slide in the direction of the central axis J are incorporated in the chuck body 10, and each master jaw 20 moves along the central axis J in conjunction with the sliding of the plungers 50. can be slid towards
- the chuck body 10 with the plurality of master jaws 20 mounted thereon is attached to the forming jig 72 using the bolts 62 .
- the plurality of master jaws 20 are slid toward the central axis J by turning the molded plug gripping bolt 63 attached to the plunger 50 with a wrench to move the plunger 50 in the direction of the central axis J. to grip the molded plug 70 with the plurality of master jaws 20 .
- the operation with the wrench is performed through the wrench insertion hole 70a provided in the center of the molded plug 70.
- the dustproof cover 71 is attached to the wrench insertion hole 70a.
- the molding jig 72 to which the chuck body 10 is attached is attached to a 5-axis processing machine (rotary axis, tilt axis, X axis, Y axis, Z axis) 73 with bolts 61. Install.
- the center axis J of the chuck main body 10 and the rotation axis J1 of the five-axis machine 73 are precisely aligned (matched).
- a combination of a 3-axis machining center (X-axis, Y-axis, Z-axis) and a 2-axis NC rotary table (rotating axis, tilting axis) may be used.
- the axis of rotation of the forming tool is parallel to the Z-axis.
- the five-axis machine 73 is operated so that the central axis J of the chuck body 10 is parallel to the Y-axis, and the tilt axis J2 is determined.
- the center axis J of the chuck body 10 and the rotation axis of the forming tool are perpendicular to each other.
- the rotation axis J1 is indexed so that the sliding direction of the master jaw 20 is parallel to the Z axis.
- the indexing of the rotation axis J1 and the indexing of the tilting axis J2 may be performed at the same time, or the rotation axis J1 may be indexed first.
- the surface of the master jaw 20 is pressed in a direction parallel to the X-axis direction (perpendicular to the sliding direction of the master jaw 20) while rotating the forming tool 80. As shown in FIG. direction) to finish the serrations 21 (on-machine forming).
- the serrations 21 may be finished for each master jaw 20 while indexing the rotation axis J1 of the five-axis machine 73 by 120°.
- the tilt axis J2 is determined so that the central axis J of the chuck body 10 is parallel to the Z axis.
- the master jaw 20 is operated in the sliding direction while rotating the forming tool 81 to finish the groove 22 (on-machine forming). At this time, finish processing is performed so that the center of the groove portion 22 faces the central axis J.
- the groove portion 22 may be finished for each master jaw 20 while indexing the rotation axis J1 of the five-axis machine 73 by 120°.
- Machine tools such as a 5-axis machine have a slight deviation in the machining position due to lost motion (positioning error due to a difference in the direction of movement).
- positioning error due to a difference in the direction of movement.
- each groove 22 may be finished by controlling the X-axis and the Y-axis if the necessary finishing accuracy can be obtained without indexing the rotation axis J1 .
- serrations (first positioning portions) 21 extending in the direction perpendicular to the sliding direction of the master jaws are finished on the surfaces of the plurality of master jaws 20 while holding the molded plug 70 .
- the relative positions of the serrations 21 of all the master jaws 20 with respect to the central axis J that is, the distance from the central axis J (radial position) and the positions in the central axis J direction can be aligned.
- the plurality of master jaws 20 are finished with grooves (second positioning portions) 22 extending in the sliding direction. It is possible to align the relative positions with respect to the central axis J in the direction perpendicular to the sliding direction.
- the top jaw 30 having the gripping surface 33 formed on the machine by another chuck is attached to the master jaw 20 of another chuck, the work gripping accuracy can be maintained satisfactorily, and the top jaw 30 can be interchanged. can ensure the integrity of the In addition, since the top jaws 30 are interchangeable, the top jaws 30 formed on the machine can be interchanged between a plurality of master jaws 20 in one chuck.
- the processing of the serrations 21 and the grooves 22 itself is not limited to a 5-axis processing machine, and a known indexing device (rotary table, NC rotary table, index table, etc.), surface grinder, machining center, or milling machine, etc.
- the machining positions of the serrations 21 and the grooves 22 may be indexed.
- the finishing of the serrations 21 and the grooves 22 may be performed by separate machine tools.
- the machine tool for finishing the serrations 21 and the grooves 22 must be a machine tool capable of linearly processing. It is necessary.
- the order of machining the serrations 21 and the grooves 22 is not particularly limited, and the serrations 21 may be finished after finishing the grooves 22 . Also, the finishing of the serrations 21 and the grooves 22 may be repeated for each master jaw 20 .
- the forming tool 80 and the forming tool 81 wear out due to machining and dressing (in the case of a grindstone). It is preferable not to finish by indexing, but to divide it into multiple times and finish it. At this time, it is preferable to sequentially finish the serrations 21 of the master jaws 20 little by little and repeat the process.
- the finishing of the grooves 22 does not need to be formed on the machine, and the individual parts can be finished.
- the chuck body 10 with the plurality of master jaws 20 mounted thereon is attached to the forming jig 72 and then attached to the 5-axis processing machine 73. After attaching to 73 , the chuck body 10 with a plurality of master jaws 20 attached thereto may be attached to the forming jig 72 .
- a cylinder or an actuator may be used instead of using the molded plug gripping bolts 63 to move the plunger 50 for gripping the molded plug 70 with the plurality of master jaws 20, a cylinder or an actuator may be used. This allows the shaped plug 70 to be gripped automatically.
- the second embodiment is a centering vise, whereas the gripper of the first embodiment is a chuck.
- FIG. 10 is a cross-sectional view schematically showing the configuration of a centering vise (gripping tool) according to the second embodiment of the present invention
- FIG. 11 is a perspective view of the centering vise.
- a pair of master jaws 20 are fitted in guide grooves of a vise body 10 (an example of a gripper body).
- Top jaws 30 are detachably attached to the pair of master jaws 20 via connecting members 45, respectively, as shown in FIG.
- a spindle 90 having a threaded surface that engages with a right-handed screw 91 and a left-handed screw 92 formed on the pair of master jaws 20 is arranged.
- the pair of master jaws 20 slide toward the central axis J, respectively.
- the pair of top jaws 30 attached to the pair of master jaws moves toward the central axis J, and the gripping surfaces 33 of the top jaws 30 can grip the workpiece.
- a serration 21 is formed on the surface of the master jaw 20 so as to extend in a direction (direction B in the drawing) perpendicular to the sliding direction (direction A in the drawing). Further, as shown in FIG. 12, the master jaw 20 is formed with a groove portion 22 extending in the sliding direction.
- the serrations 21 formed on the surface of the master jaw 20 serve as a "first positioning portion” that determines the distance from the central axis J of the top jaw 30 when the top jaw 30 is attached to the master jaw 20. Equivalent to. Further, the groove portion 22 formed in the master jaw corresponds to a "second positioning portion” that determines the vertical position of the top jaw 30 with respect to the sliding direction when the top jaw 30 is attached to the master jaw 20 .
- the top jaw 30 is formed with serrations 31 extending in a direction perpendicular to the sliding direction on the surface that contacts the master jaw 20 .
- the serrations 31 are formed in accordance with the serrations 21 formed on the master jaw 20, and are positioned in the sliding direction of the top jaw 30 and in the direction of the central axis J by closely meshing with each other. This determines the distance from the central axis J of the gripping surface 33 .
- top jaw 30 is formed with a key groove 32 extending in the sliding direction. A direction is positioned.
- a plurality of master jaws 20 are attached to the vise body 10 so as to be slidable toward the central axis J.
- a spindle 90 having a threaded surface that engages with a right-handed screw 91 and a left-handed screw 92 formed on the master jaw 20 is incorporated in the guide groove of the vise body 10, and the spindle 90 is rotated.
- each master jaw 20 can be slid toward the central axis J.
- the molding jig 72 is attached to a 5-axis processing machine (not shown).
- the vise body 10 with the pair of master jaws 20 mounted thereon is attached to the molding jig 72 .
- the center axis J of the vise main body 10 and the rotation axis of the five-axis machine are precisely aligned (matched).
- the spindle 90 is rotated to slide the pair of master jaws 20 toward the central axis J to grip the molded plug 70 with the pair of master jaws 20 .
- the tilt axis of the 5-axis machine is indexed so that the serrations 21 are in a machining-enabled posture.
- a forming tool 80 is used on the surface of each master jaw 20 in the sliding direction. Serrations 21 extending in the vertical direction are finished.
- a molding tool (not shown) is applied to the master jaw 20 while the molding plug 70 is held. , the groove portion 22 extending in the sliding direction is finished. At this time, finish processing is performed so that the center of the groove portion 22 faces the central axis J.
- serrations (first positioning portions) 21 extending in the direction perpendicular to the sliding direction are finished on the surfaces of the pair of master jaws 20 while holding the molded plug 70 .
- the relative positions of the serrations 21 of the pair of master jaws 20 with respect to the central axis J that is, the distance (radial position) from the central axis J and the position in the central axis J direction can be aligned.
- the pair of master jaws 20 are finished with grooves (second positioning portions) 22 extending in the sliding direction.
- the relative position to the central axis J (the position in the direction perpendicular to the sliding direction) can be aligned.
- top jaw 30 formed on-machine by another centering vise is attached to the master jaw 20 of another centering vise, it is possible to maintain good gripping accuracy of the workpiece, and the interchangeability of the top jaw 30 is ensured. can be secured.
- the top jaws 30 are interchangeable, the top jaws 30 formed on the machine can be interchanged between a pair of master jaws 20 in one centering vise.
- Machining of the serrations 21 and grooves 22 is not limited to a 5-axis machine, and various machine tools may be equipped with known indexing devices (rotary table, NC rotary table, index table, etc.). , serrations 21 and grooves 22 are indexed.
- the two grooves 22 are on a straight line, so the two may be continuously finished without indexing in the middle.
- each master jaw 20 is provided with serrations 21 extending in a direction perpendicular to the sliding direction as a first positioning portion that determines the distance from the central axis J of the top jaw 30. formed.
- each master jaw 20 is formed with a groove portion 22 extending in the sliding direction.
- a sliding A groove portion 24 extending in a direction perpendicular to the direction (direction B in the figure) is formed.
- a projection 25 extending in the sliding direction is formed at the center of each master jaw 20 as a second positioning portion that determines the vertical position of the top jaw 30 in the sliding direction.
- each top jaw 30 has a protrusion extending in a direction perpendicular to the sliding direction (direction A in the figure) at the center of the top jaw 30 in the sliding direction (direction A in the figure).
- a key portion 34 is formed.
- a key groove 35 extending in the sliding direction is formed in the central portion of each top jaw 30 .
- the mounting surface 36 of the top jaw 30 is brought into close contact with the mounting surface 26 of the master jaw 20, the side surface 34a of the key portion 34 of the top jaw 30 is brought into close contact with the side surface 24a of the groove portion 24 of the master jaw 20, and the master jaw 20 is mounted.
- the top jaw 30 is positioned in the sliding direction and the central axis J direction. This determines the distance from the central axis J of the gripping surface 33 .
- the top jaw 30 slides in the sliding direction. It is positioned vertically with respect to This determines the position of the gripping surface 33 relative to the central axis J in the direction perpendicular to the sliding direction.
- each master jaw 20 in this modified example is performed on the side surface 24a of the groove 24, the mounting surface 26, and the side surface 25a of the protrusion 25.
- these finishing operations are performed by mounting a known indexing device (rotary table, NC rotary table, index table, etc.) on the machine tool to determine the machining positions of the grooves 24 and the projections 25. It can be done while dividing.
- the plurality of master jaws 20 are attached to the chuck body 10 so as to be slidable toward the central axis J, the plurality of master jaws 20 are slid toward the central axis J to form a plurality of master jaws.
- the jaws grip the molded plug 70 .
- the grooves 24 extending in the direction perpendicular to the sliding direction and the projections 25 extending in the sliding direction may be finished on the surfaces of the plurality of master jaws 20, respectively.
- grooves (first positioning portions) 24 extending in the direction perpendicular to the sliding direction are finished on the surfaces of the plurality of master jaws 20 while holding the molded plug 70 .
- the distances (radial positions) from the central axis J of the grooves 24 in all the master jaws 20 can be made uniform.
- top jaw 30 formed on-machine by another chuck is attached to the master jaw 20 of another chuck, it is possible to maintain good gripping accuracy of the workpiece and ensure compatibility of the top jaw 30. be able to.
- the top jaws 30 are interchangeable, the top jaws 30 formed on the machine can be interchanged between a plurality of master jaws 20 in one chuck.
- a chuck and a centering vise were exemplified as a gripping tool for gripping a work, but the present invention is not limited to this. Any gripping tool having a centering function that grips a workpiece with the top jaws 30 mounted in .
- chuck body vise body (gripping tool body) 20 Master Joe 21 serration (first positioning part) 22 groove (second positioning part) 24 groove (first positioning part) 24a side surface of groove 25 protrusion (second positioning portion) 25a side of protrusion 26 Mounting surface 30 Top jaw 31 Serration 32 Keyway 33 gripping surface 34 keys 34a Side of key portion 35 Keyway 35a side surface of key groove 36 mounting surface 40 T nut (connecting member) 41 Wide part 42 Narrow part 45 connecting member 50 plunger 60-62 volts 63 molded plug gripping bolt 70 molded plug 71 dust cover 72 molding jig 73 5-axis machine 80, 81 Molding tools 90 spindle
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Gripping On Spindles (AREA)
- Clamps And Clips (AREA)
- Manipulator (AREA)
Abstract
Description
図1は、本発明の第1の実施形態におけるチャック(把持具)の構成を模式的に示した断面図である。
第2の実施形態は、第1の実施形態の把持具がチャックであるのに対して、センタリングバイスである。
第1の実施形態におけるチャック(把持具)では、トップジョー30の中心軸Jからの距離を決める第1の位置決め部として、各マスタージョー20に、スライド方向に対して垂直方向に延びるセレーション21を形成した。また、トップジョー30のスライド方向に対して垂直方向の位置を決める第2の位置決め部として、各マスタージョー20に、スライド方向に延びる溝部22を形成した。
20 マスタージョー
21 セレーション(第1の位置決め部)
22 溝部(第2の位置決め部)
24 溝部(第1の位置決め部)
24a 溝部の側面
25 突起部 (第2の位置決め部)
25a 突起部の側面
26 取付面
30 トップジョー
31 セレーション
32 キー溝
33 把持面
34 キー部
34a キー部の側面
35 キー溝
35a キー溝の側面
36 取付面
40 Tナット(連結部材)
41 幅広部
42 幅狭部
45 連結部材
50 プランジャー
60~62 ボルト
63 成形プラグ把持用ボルト
70 成形プラグ
71 防塵用カバー
72 成形用治具
73 5軸加工機
80、81 成形用工具
90 スピンドル
Claims (4)
- 把持具本体の前面に装着された複数のマスタージョーが、それぞれ中心軸に向かってスライドすることにより、ワークの中心が前記中心軸と一致するように、前記複数のマスタージョーにそれぞれ装着された複数のトップジョーで、前記ワークを把持する把持具の製造方法であって、
前記マスタージョーの表面には、前記トップジョーを前記マスタージョーに装着したとき、前記トップジョーの前記中心軸からの距離を決める第1の位置決め部が、前記スライド方向に対して垂直方向に形成されており、
前記把持具本体に、前記複数のマスタージョーを、それぞれ中心軸に向かってスライド可能に装着する工程と、
前記複数のマスタージョーを、それぞれ、中心軸に向かってスライドさせて、前記複数のマスタージョーで成形プラグを把持する工程と、
前記成形プラグを把持した状態で、前記複数のマスタージョーの表面に、それぞれ、前記マスタージョーのスライド方向に対して垂直方向に延びる前記第1の位置決め部を仕上げ加工する工程と
を有する、把持具の製造方法。 - 前記第1の位置決め部は、前記スライド方向に対して垂直方向に形成されたセレーション、または、溝部からなる、請求項1に記載の把持具の製造方法。
- 前記マスタージョーには、前記トップジョーを前記マスタージョーに装着したとき、前記トップジョーの前記スライド方向に対して垂直方向の位置を決める第2の位置決め部が、前記スライド方向に形成されており、
前記成形プラグを把持した状態で、前記複数のマスタージョーに、それぞれ、前記スライド方向に延びる前記第2の位置決め部を仕上げ加工する工程をさらに有する、請求項1または2に記載の把持具の製造方法。 - 前記第2の位置決め部は、前記スライド方向に沿って形成された溝部または突起部からなる、請求項3に記載の把持具の製造方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/719,121 US12350817B2 (en) | 2021-12-13 | 2022-12-09 | Method for manufacturing gripping tool |
| KR1020247020598A KR20240105484A (ko) | 2021-12-13 | 2022-12-09 | 파지구의 제조 방법 |
| EP22907392.9A EP4434660A4 (en) | 2021-12-13 | 2022-12-09 | METHOD FOR MANUFACTURING A GRIPPING TOOL |
| CN202280082448.5A CN118510620A (zh) | 2021-12-13 | 2022-12-09 | 夹持具的制造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021201880A JP7317094B2 (ja) | 2021-12-13 | 2021-12-13 | 把持具の製造方法 |
| JP2021-201880 | 2021-12-13 |
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| WO2023112865A1 true WO2023112865A1 (ja) | 2023-06-22 |
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| Country | Link |
|---|---|
| US (1) | US12350817B2 (ja) |
| EP (1) | EP4434660A4 (ja) |
| JP (1) | JP7317094B2 (ja) |
| KR (1) | KR20240105484A (ja) |
| CN (1) | CN118510620A (ja) |
| TW (1) | TWI893338B (ja) |
| WO (1) | WO2023112865A1 (ja) |
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| KR102939114B1 (ko) | 2025-01-24 | 2026-03-13 | 박주희 | 유압척용 보조장치 및 이를 구비하는 공작기계 |
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|---|---|---|---|---|
| JPH05192807A (ja) * | 1992-01-21 | 1993-08-03 | Olympus Optical Co Ltd | チャック爪 |
| JP3103906U (ja) * | 2004-03-10 | 2004-08-26 | 株式会社迫平製作所 | 生爪加工用位置決め具 |
| JP2010110884A (ja) | 2008-11-10 | 2010-05-20 | Kunihiko Inora | 生爪成形冶具 |
| WO2010084584A1 (ja) * | 2009-01-21 | 2010-07-29 | 有限会社 シンセテック | チャック機構、爪材、及び旋盤 |
| JP2014155992A (ja) * | 2013-02-15 | 2014-08-28 | Kosumo Kikai Kk | 工作機械用チャック機構、爪材及び旋盤 |
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| US5842705A (en) * | 1997-11-24 | 1998-12-01 | The Goss & Deleeuw Machine Company | Quick-change jaw assembly |
| US5944331A (en) * | 1998-07-27 | 1999-08-31 | Kim; Johnny | Chuck adapter |
| JP3690987B2 (ja) * | 2000-05-16 | 2005-08-31 | 有限会社志田製作所 | ワークチャッキング装置 |
| SE527521C2 (sv) * | 2004-03-04 | 2006-03-28 | Seco Tools Ab | Yta samt förfarande för tillverkning av en yta ingående i en verktygskoppling |
| EP3300821A4 (en) * | 2016-05-16 | 2019-03-13 | Synthe Tech Inc. | CHUCK, DEGRADED CHEEK AND TOOL MACHINE |
| WO2019021513A1 (ja) * | 2017-07-24 | 2019-01-31 | 株式会社北川鉄工所 | チャック |
| JP6411619B1 (ja) * | 2017-12-01 | 2018-10-24 | 株式会社北川鉄工所 | チャック及びその製造方法 |
-
2021
- 2021-12-13 JP JP2021201880A patent/JP7317094B2/ja active Active
-
2022
- 2022-12-09 CN CN202280082448.5A patent/CN118510620A/zh active Pending
- 2022-12-09 KR KR1020247020598A patent/KR20240105484A/ko active Pending
- 2022-12-09 US US18/719,121 patent/US12350817B2/en active Active
- 2022-12-09 EP EP22907392.9A patent/EP4434660A4/en active Pending
- 2022-12-09 WO PCT/JP2022/045541 patent/WO2023112865A1/ja not_active Ceased
- 2022-12-12 TW TW111147545A patent/TWI893338B/zh active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05192807A (ja) * | 1992-01-21 | 1993-08-03 | Olympus Optical Co Ltd | チャック爪 |
| JP3103906U (ja) * | 2004-03-10 | 2004-08-26 | 株式会社迫平製作所 | 生爪加工用位置決め具 |
| JP2010110884A (ja) | 2008-11-10 | 2010-05-20 | Kunihiko Inora | 生爪成形冶具 |
| WO2010084584A1 (ja) * | 2009-01-21 | 2010-07-29 | 有限会社 シンセテック | チャック機構、爪材、及び旋盤 |
| JP2014155992A (ja) * | 2013-02-15 | 2014-08-28 | Kosumo Kikai Kk | 工作機械用チャック機構、爪材及び旋盤 |
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| Title |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2023087476A (ja) | 2023-06-23 |
| US20250050510A1 (en) | 2025-02-13 |
| US12350817B2 (en) | 2025-07-08 |
| EP4434660A4 (en) | 2025-04-23 |
| TW202335763A (zh) | 2023-09-16 |
| JP7317094B2 (ja) | 2023-07-28 |
| CN118510620A (zh) | 2024-08-16 |
| KR20240105484A (ko) | 2024-07-05 |
| EP4434660A1 (en) | 2024-09-25 |
| TWI893338B (zh) | 2025-08-11 |
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